Notice of Pre-AIA or AIA Status
The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA .
Response to Arguments
Applicant's arguments filed 9/2/26 have been fully considered but they are not persuasive. Applicant has argued that because some data sheets have a maximum charging current on them, that all data sheets omitting the term “maximum” or rated charging current does not meet the claim language. Applicant has further argued that as a data sheet has 1.5C maximum charging current on the manufacturer’s data sheet, that the description of Dong does not anticipate. Applicant has finally argued that Dong’s submission of the charging current is actually the manufacturer’s maximum rated charging current. To all of these arguments, examiner respectfully disagrees.
Applicant is claiming a general claim on all battery packs. The claims are for exclusive rights to charge all battery packs above the manufacturer rated charging current of the battery. This claim means every battery type the claim requirements have to be met. The examiner only needs to show at least one example (species) that the general claim (genus) claim is not present for the applicant’s claim to be rejected. Examiner has done so. Two distinct battery types with different requirements from the examiner’s example are not convincing over the examiner’s example. Therefore, the presence of different rating/maximum current values in other battery types is not convincing to withdraw the rejection employing Dong.
Dong specifically lists a battery type (SANYO UR18650SA, ¶’s [62-65]). The data sheet for this battery type (mailed 2/3/26) specifically lists the maximum current as 0.7 C at a rated capacity of 1.25 A (i.e. a rated current of 1.25Ah*0.7C=0.875A=~880mA). To any person of ordinary skill in the art, that value (0.7C, 0.875A rated current) is the rated and maximum charging current recommended by the manufacturer for that particular battery type.
Dong was not owned by either Sanyo or Panasonic (two entities listed on the Datasheet; Panasonic has owned Sanyo since 2011), but rather Chevron. To one of ordinary skill in the art, Dong’s disclosure therefore is not something set by the manufacturer. Rather, Dong’s disclosure is of one of ordinary skill in the art excluding the manufacturer.
Thus when Dong says that the charging current applied to the specific battery is 4A, that meets the claimed requirements. That value represents (4A/1.25Ah=3.2C) a larger C value than the manufacturer’s 0.7C charging current requirements.
Turning to the applicant’s examples, for instance, they have one with a rated charge current of (6A/5Ah=1.2C; INR21700-50S, Samsung) 1.2C, another with a rated charge current of 0.5C (standard charge of 1C; LG INR18650-HJ2), and a third with a rated charge current of (6A/4Ah=1.5C; standard charge of 2A/4Ah=0.5C; Samsung INR21700-40T) 1.5C. Even if we were looking at the applicant’s findings to compare to that of Dong, Dong’s 3.2C is over 2x the magnitude of the highest example applicant could find for a C-rate.
The following references describe why it is not recommended to go over the manufacturer’s rated charging current. The obvious advantage for doing so would be increased speed of charging (as the SOC can be calculated by the current value in amps [amperes] multiplied by the time, so the higher current means faster SOC gain).
US 20090184687 A1 (¶[09])
US 20140375279 A1 (¶[10])
US 20150162758 A1 (¶’s [07, 50])
US 20190143820 A1 (¶’s [03, 14, 27-29])
Therefore, applicant’s arguments with respect to Dong have been respectfully refuted. Based upon the evidence provided by the applicant, it may be reasonable to assume that a battery charged at C-rates above 1.5C may be higher than a manufacturer’s rated charging current. Examiner provided an example of that on at least pages 4-6 of the non-final rejection mailed 9/17/25. However, in the interests of brevity, that rejection will not be employed. The 112[a] rejections have been withdrawn due to the amendments filed 9/2/26. For similar reasons, the claim, drawing, and specification objections are withdrawn.
Claim Rejections - 35 USC § 102
In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status.
The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action:
A person shall be entitled to a patent unless –
(a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention.
(a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention.
Claim 11 is rejected under 35 U.S.C. 102(a)(1) as being anticipated by Dong (USPGPN 20150162758), as evidenced by Panasonic (“Lithium Ion UR18650SA,” Panasonic Sanyo Energy USA Corporation, Version 13.02 R1, Published 2012, www.megacellmonitor.com/pdf/vendor_specs/SPEC_SANYO_UR18650SA.pdf ).
Independent Claim 11, Dong discloses a method for charging a battery pack (10 in Fig. 4), the method (Figs. [1-3, 5-9], abstract, ¶’s [12, 32, 41-63, esp. 12, 32, 41, 43-45, 48, 49, 53, 55-63]) comprising:
connecting the battery pack to a battery pack charger (¶’s [33, 34, 44, 56, esp. 44, 56]);
providing a charging current to one or more lithium-ion battery cells of the battery pack using an over-voltage charging profile (Fig. 6, ¶[63] describes a voltage of 4.35V being the point where the battery is stopped from charging, where Panasonic provides evidence that the predetermined maximum charging voltage limit for the battery cell is 4.2V), the over-voltage charging profile including a first charging current level, the first charging current level being greater than a manufacturer rated charging current for the one or more lithium-ion battery cells (¶’s [19-23, 62], Figs. [5-9], where these ¶’s describes that this particular battery is charged with 4 A, while the data sheet from Panasonic’s evidence shows that the manufacturer rated charging current is only 0.88A, while the charge capacity is up to 1.25Ah, meaning 1C would be 1.25A, thus a charge for 4A would be above both 1C and the manufacturer rated charging current);
charging the one or more lithium-ion battery cells to a voltage exceeding a predetermined maximum charging voltage limit for the one or more lithium-ion battery cells (Fig. 6, ¶[63], 4.36V > 4.2V according to Panasonic for that particular cell[s], or 4.38 V); and
stopping the charging current after the voltage exceeds the predetermined maximum charging voltage limit (19 minutes is described to be the duration, and Fig. 6 shows that time occurs when 4.35V is reached, ¶[63]).
Applicant has argued that because some data sheets have a maximum charging current on them, that all data sheets omitting the term “maximum” or rated charging current does not meet the claim language. Applicant has further argued that as a data sheet has 1.5C maximum charging current on the manufacturer’s data sheet, that the description of Dong does not anticipate. Applicant has finally argued that Dong’s submission of the charging current is actually the manufacturer’s maximum rated charging current. To all of these arguments, examiner respectfully disagrees.
Applicant is claiming a general claim on all battery packs. The claims are for exclusive rights to charge all battery packs above the manufacturer rated charging current of the battery. This claim means every battery type the claim requirements have to be met. The examiner only needs to show at least one example (species) that the general claim (genus) claim is not present for the applicant’s claim to be rejected. Examiner has done so. Two distinct battery types with different requirements from the examiner’s example are not convincing over the examiner’s example. Therefore, the presence of different rating/maximum current values in other battery types is not convincing to withdraw the rejection employing Dong.
Dong specifically lists a battery type (SANYO UR18650SA, ¶’s [62-65]). The data sheet for this battery type (mailed 2/3/26) specifically lists the maximum current as 0.7 C at a rated capacity of 1.25 A (i.e. a rated current of 1.25Ah*0.7C=0.875A=~880mA). To any person of ordinary skill in the art, that value (0.7C, 0.875A rated current) is the rated and maximum charging current recommended by the manufacturer for that particular battery type.
Dong was not owned by either Sanyo or Panasonic (two entities listed on the Datasheet; Panasonic has owned Sanyo since 2011), but rather Chevron. To one of ordinary skill in the art, Dong’s disclosure therefore is not something set by the manufacturer. Rather, Dong’s disclosure is of one of ordinary skill in the art excluding the manufacturer.
Thus when Dong says that the charging current applied to the specific battery is 4A, that meets the claimed requirements. That value represents (4A/1.25Ah=3.2C) a larger C value than the manufacturer’s 0.7C charging current requirements.
Turning to the applicant’s examples, for instance, they have one with a rated charge current of (6A/5Ah=1.2C; INR21700-50S, Samsung) 1.2C, another with a rated charge current of 0.5C (standard charge of 1C; LG INR18650-HJ2), and a third with a rated charge current of (6A/4Ah=1.5C; standard charge of 2A/4Ah=0.5C; Samsung INR21700-40T) 1.5C. Even if we were looking at the applicant’s findings to compare to that of Dong, Dong’s 3.2C is over 2x the magnitude of the highest example applicant could find for a C-rate.
The following references describe why it is not recommended to go over the manufacturer’s rated charging current. The obvious advantage for doing so would be increased speed of charging (as the SOC can be calculated by the current value in amps [amperes] multiplied by the time, so the higher current means faster SOC gain).
US 20090184687 A1 (¶[09])
US 20140375279 A1 (¶[10])
US 20150162758 A1 (¶’s [07, 50])
US 20190143820 A1 (¶’s [03, 14, 27-29])
Claim Rejections - 35 USC § 103
In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status.
The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action:
A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made.
The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows:
1. Determining the scope and contents of the prior art.
2. Ascertaining the differences between the prior art and the claims at issue.
3. Resolving the level of ordinary skill in the pertinent art.
4. Considering objective evidence present in the application indicating obviousness or nonobviousness.
This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention.
Claims 1-6, 15-18 are rejected under 35 U.S.C. 103 as being unpatentable over Dong (USPGPN 20150162758) in view of Kanomata (USPGPN 20170352926; hereinafter Kano), as evidenced by Panasonic (“Lithium Ion UR18650SA,” Panasonic Sanyo Energy USA Corporation, Version 13.02 R1, Published 2012, www.megacellmonitor.com/pdf/vendor_specs/SPEC_SANYO_UR18650SA.pdf ), Suzuki et al (USPGPN 20130335034), Yang (USPGPN 20200366116), and Suzuki (USPGPN 20170047618; -hereinafter Suzuki2).
Independent Claim 1, Dong teaches a method for charging a battery pack (10 in Fig. 4), the method (Figs. [1-3, 5-9], abstract, ¶’s [12, 32, 41-63, esp. 12, 32, 41, 43-45, 48, 49, 53, 55-63]) comprising:
connecting the battery pack to a battery pack charger (¶’s [33, 34, 44, 56, esp. 44, 56]);
providing a charging current to one or more battery cells of the battery pack using a constant current charging profile, the constant current charging profile including a first charging current level, the first charging current level being greater than a manufacturer rated charging current for the one or more battery cells (¶’s [19-23, 62], Figs. [5-9], where these ¶’s describes that this particular battery is charged with 4 A, while the data sheet from Panasonic’s evidence shows that the manufacturer rated charging current is only 0.88A, while the charge capacity is up to 1.25Ah, meaning 1C would be 1.25A, thus a charge for 4A would be above both 1C and the manufacturer rated charging current);
making a change when a voltage of the one or more battery cells increases to a predetermined voltage value (¶’s [27, 62, 65]).
Dong is silent to using a stepped charging profile, the step charging profile including a first charging current level, the first charging current level being greater than a manufacturer rated charging current for the one or more battery cells; stepping down the charging current to a second charging current level when a voltage of the one or more battery cells increases to a predetermined voltage value.
Kano teaches providing a charging current to one or more battery cells of the battery pack using a stepped charging profile (Figs. 3 & 4, ST11-ST15), the step charging profile including a first charging current level (see ~5.27-5.4A starting current in Figs. 3 & 4),
the first charging current level being greater than a manufacturer rated charging current for the one or more battery cells (Suzuki ¶[56], Suzuki2 ¶[90], and Yang ¶’s [76-78, 82-89, 94, 95, 102, 113, 115, 116] provide evidence to define the rated charging current of the battery as the capacity of the battery divided by 1 hour [i.e. for a battery with 1Amp-Hour, the rated current would be 1 Amp];
the manufacturer of the battery is known to one of ordinary skill in the art to set the capacity of the battery, thus, the rated capacity of the battery can easily be found. In other words, a C-rate of 1-C [i.e. amount of current required to fully recharge the battery from empty to full in 1 hour] is known to one ordinary skill in the art as the rated charging current of the battery;
In light of the contextual information known to one of ordinary skill in the art above, ¶[34] demonstrates definition of the manufacturer’s rated capacity in line with the evidence of the knowledge of one of ordinary skill in the art, with ¶[38] demonstrating the manufacturer capacity is ~2.93 Amp-Hours, which means 1 C equals 2.93 Amps, and ¶[38] describes the first charging current can be 1.8 times that);
stepping down the charging current to a second charging current level when a voltage of the one or more battery cells increases to a predetermined voltage value (see Figs. 2-4).
Kano teaches this method of using a stepped charging current process starting above 1C serves to improve the speed/rapidity of the charging while improving lifetime by preventing degradation by the rapid charging (¶’s [11-14, esp. 11, 14]). Both Kano and Dong analogously describe a method of charging with constant current and constant voltage where the constant current is above the 1 C rating for the battery.
It would have been obvious to one of ordinary skill in the art to modify Dong with Kano to provide improved lifetime and speed.
Kano further teaches a method for charging a battery pack (Fig. 1), the method (Figs. [2-6, esp. 2-4]) comprising:
connecting the battery pack to a battery pack charger (¶’s [30, 55] describes the battery being connected to a charger/charging-apparatus, ST1 in Fig. 2, start of charging in Figs. 3 & 4)
Applicant has argued that because some data sheets have a maximum charging current on them, that all data sheets omitting the term “maximum” or rated charging current does not meet the claim language. Applicant has further argued that as a data sheet has 1.5C maximum charging current on the manufacturer’s data sheet, that the description of Dong does not anticipate. Applicant has finally argued that Dong’s submission of the charging current is actually the manufacturer’s maximum rated charging current. To all of these arguments, examiner respectfully disagrees.
Applicant is claiming a general claim on all battery packs. The claims are for exclusive rights to charge all battery packs above the manufacturer rated charging current of the battery. This claim means every battery type the claim requirements have to be met. The examiner only needs to show at least one example (species) that the general claim (genus) claim is not present for the applicant’s claim to be rejected. Examiner has done so. Two distinct battery types with different requirements from the examiner’s example are not convincing over the examiner’s example. Therefore, the presence of different rating/maximum current values in other battery types is not convincing to withdraw the rejection employing Dong.
Dong specifically lists a battery type (SANYO UR18650SA, ¶’s [62-65]). The data sheet for this battery type (mailed 2/3/26) specifically lists the maximum current as 0.7 C at a rated capacity of 1.25 A (i.e. a rated current of 1.25Ah*0.7C=0.875A=~880mA). To any person of ordinary skill in the art, that value (0.7C, 0.875A rated current) is the rated and maximum charging current recommended by the manufacturer for that particular battery type.
Dong was not owned by either Sanyo or Panasonic (two entities listed on the Datasheet; Panasonic has owned Sanyo since 2011), but rather Chevron. To one of ordinary skill in the art, Dong’s disclosure therefore is not something set by the manufacturer. Rather, Dong’s disclosure is of one of ordinary skill in the art excluding the manufacturer.
Thus when Dong says that the charging current applied to the specific battery is 4A, that meets the claimed requirements. That value represents (4A/1.25Ah=3.2C) a larger C value than the manufacturer’s 0.7C charging current requirements.
Turning to the applicant’s examples, for instance, they have one with a rated charge current of (6A/5Ah=1.2C; INR21700-50S, Samsung) 1.2C, another with a rated charge current of 0.5C (standard charge of 1C; LG INR18650-HJ2), and a third with a rated charge current of (6A/4Ah=1.5C; standard charge of 2A/4Ah=0.5C; Samsung INR21700-40T) 1.5C. Even if we were looking at the applicant’s findings to compare to that of Dong, Dong’s 3.2C is over 2x the magnitude of the highest example applicant could find for a C-rate.
The following references describe why it is not recommended to go over the manufacturer’s rated charging current. The obvious advantage for doing so would be increased speed of charging (as the SOC can be calculated by the current value in amps [amperes] multiplied by the time, so the higher current means faster SOC gain).
US 20090184687 A1 (¶[09])
US 20140375279 A1 (¶[10])
US 20150162758 A1 (¶’s [07, 50])
US 20190143820 A1 (¶’s [03, 14, 27-29])
Independent Claim 15, Dong teaches a battery pack charger (20 in Fig. 4) for charging a battery pack (10), the battery pack charger (performing method described in Figs. [1-3, 5-9], abstract, ¶’s [12, 32, 41-63, esp. 12, 32, 41, 43-45, 48, 49, 53, 55-63]) comprising:
one or more battery pack receiving portions for receiving and interfacing with the battery pack (21), the battery pack including one or more battery cells (¶[27]);
a power control module configured to provide power to the one or more battery pack receiving portions (301, 307, ¶’s [32-35]); and
a controller connected to the power control module (308), the controller configured to:
provide a charging current to one or more battery cells of the battery pack using a constant current charging profile, the constant current charging profile including a first charging current level, the first charging current level being greater than a manufacturer rated charging current for the one or more battery cells (¶’s [19-23, 62], Figs. [5-9], where these ¶’s describes that this particular battery is charged with 4 A, while the data sheet from Panasonic’s evidence shows that the manufacturer rated charging current is only 0.88A, while the charge capacity is up to 1.25Ah, meaning 1C would be 1.25A, thus a charge for 4A would be above both 1C and the manufacturer rated charging current);
making a change when a voltage of the one or more battery cells increases to a predetermined voltage value (¶’s [27, 62, 65]).
Dong is silent to using a stepped charging profile, the step charging profile including a first charging current level, the first charging current level being greater than a manufacturer rated charging current for the one or more battery cells; stepping down the charging current to a second charging current level when a voltage of the one or more battery cells increases to a predetermined voltage value.
Kano teaches providing a charging current to one or more battery cells of the battery pack using a stepped charging profile (Figs. 3 & 4, ST11-ST15), the step charging profile including a first charging current level (see ~5.27-5.4A starting current in Figs. 3 & 4),
the first charging current level being greater than a manufacturer rated charging current for the one or more battery cells (Suzuki ¶[56], Suzuki2 ¶[90], and Yang ¶’s [76-78, 82-89, 94, 95, 102, 113, 115, 116] provide evidence to define the rated charging current of the battery as the capacity of the battery divided by 1 hour [i.e. for a battery with 1Amp-Hour, the rated current would be 1 Amp];
the manufacturer of the battery is known to one of ordinary skill in the art to set the capacity of the battery, thus, the rated capacity of the battery can easily be found. In other words, a C-rate of 1-C [i.e. amount of current required to fully recharge the battery from empty to full in 1 hour] is known to one ordinary skill in the art as the rated charging current of the battery;
In light of the contextual information known to one of ordinary skill in the art above, ¶[34] demonstrates definition of the manufacturer’s rated capacity in line with the evidence of the knowledge of one of ordinary skill in the art, with ¶[38] demonstrating the manufacturer capacity is ~2.93 Amp-Hours, which means 1 C equals 2.93 Amps, and ¶[38] describes the first charging current can be 1.8 times that);
stepping down the charging current to a second charging current level when a voltage of the one or more battery cells increases to a predetermined voltage value (see Figs. 2-4).
Kano teaches this method of using a stepped charging current process starting above 1C serves to improve the speed/rapidity of the charging while improving lifetime by preventing degradation by the rapid charging (¶’s [11-14, esp. 11, 14]). Both Kano and Dong analogously describe a method of charging with constant current and constant voltage where the constant current is above the 1 C rating for the battery.
It would have been obvious to one of ordinary skill in the art to modify Dong with Kano to provide improved lifetime and speed.
Kano further teaches a method for charging a battery pack (Fig. 1), the method (Figs. [2-6, esp. 2-4]) comprising:
connecting the battery pack to a battery pack charger (¶’s [30, 55] describes the battery being connected to a charger/charging-apparatus, ST1 in Fig. 2, start of charging in Figs. 3 & 4)
Applicant has argued that because some data sheets have a maximum charging current on them, that all data sheets omitting the term “maximum” or rated charging current does not meet the claim language. Applicant has further argued that as a data sheet has 1.5C maximum charging current on the manufacturer’s data sheet, that the description of Dong does not anticipate. Applicant has finally argued that Dong’s submission of the charging current is actually the manufacturer’s maximum rated charging current. To all of these arguments, examiner respectfully disagrees.
Applicant is claiming a general claim on all battery packs. The claims are for exclusive rights to charge all battery packs above the manufacturer rated charging current of the battery. This claim means every battery type the claim requirements have to be met. The examiner only needs to show at least one example (species) that the general claim (genus) claim is not present for the applicant’s claim to be rejected. Examiner has done so. Two distinct battery types with different requirements from the examiner’s example are not convincing over the examiner’s example. Therefore, the presence of different rating/maximum current values in other battery types is not convincing to withdraw the rejection employing Dong.
Dong specifically lists a battery type (SANYO UR18650SA, ¶’s [62-65]). The data sheet for this battery type (mailed 2/3/26) specifically lists the maximum current as 0.7 C at a rated capacity of 1.25 A (i.e. a rated current of 1.25Ah*0.7C=0.875A=~880mA). To any person of ordinary skill in the art, that value (0.7C, 0.875A rated current) is the rated and maximum charging current recommended by the manufacturer for that particular battery type.
Dong was not owned by either Sanyo or Panasonic (two entities listed on the Datasheet; Panasonic has owned Sanyo since 2011), but rather Chevron. To one of ordinary skill in the art, Dong’s disclosure therefore is not something set by the manufacturer. Rather, Dong’s disclosure is of one of ordinary skill in the art excluding the manufacturer.
Thus when Dong says that the charging current applied to the specific battery is 4A, that meets the claimed requirements. That value represents (4A/1.25Ah=3.2C) a larger C value than the manufacturer’s 0.7C charging current requirements.
Turning to the applicant’s examples, for instance, they have one with a rated charge current of (6A/5Ah=1.2C; INR21700-50S, Samsung) 1.2C, another with a rated charge current of 0.5C (standard charge of 1C; LG INR18650-HJ2), and a third with a rated charge current of (6A/4Ah=1.5C; standard charge of 2A/4Ah=0.5C; Samsung INR21700-40T) 1.5C. Even if we were looking at the applicant’s findings to compare to that of Dong, Dong’s 3.2C is over 2x the magnitude of the highest example applicant could find for a C-rate.
The following references describe why it is not recommended to go over the manufacturer’s rated charging current. The obvious advantage for doing so would be increased speed of charging (as the SOC can be calculated by the current value in amps [amperes] multiplied by the time, so the higher current means faster SOC gain).
US 20090184687 A1 (¶[09])
US 20140375279 A1 (¶[10])
US 20150162758 A1 (¶’s [07, 50])
US 20190143820 A1 (¶’s [03, 14, 27-29])
Dependent Claims 2 and 16, the combination of Dong and Kano teaches the second charging current level is greater than the manufacturer rated charging current (Dong teaches the C rate for the stage is above 1C [approximately 4/1.25=3.2C], Kano also teaches the 1st stage is above 1C [1.8C], with the 2nd stage at 0.1C lower, or 1.7C, see ¶’s [34, 38, 39])
Dependent Claims 3 and 17, the combination of Dong and Kano teaches stepping down the charging current to a third charging current level, wherein the third charging current level is less than the manufacturer rated charging current (Kano: see around 30 minutes into the program is below the 1C rating of ~2.9A).
Dependent Claim 4, Dong is silent to a charging time of the one or more battery cells is less than 1500 seconds.
It is well known within the art that charging time is dependent on charging current. Therefore, it would have been obvious to try, an obvious design choice, and well known to one of ordinary skill in the art that adjusting the charging current will result in a different charging time enabling one to select a preferred charging time based on the charging current.
Dependent Claim 5, Dong is silent to the manufacturer rated charging current is at least 6 Amperes. However, Panasonic does demonstrate the rated charging current for the cell as being 0.88A, which means 8 or more of these cells in parallel in a single battery pack would demonstrate a manufacturer rated charging current for the pack of at least 6 amperes. While Dong is silent to the cell assembly having either parallel or serial connections, it is Dong has left it open for a battery pack with 2+ cells in ¶’s [27, 07]. It would be a design choice to have the pack have that high of a current rating, esp. for large loads requiring large currents, where these 8+ parallel cells would be able to provide larger currents than 1 cell. Official notice taken that battery packs with more than 8 cells in parallel are well known in the art for the purpose of being able to reliably power large loads requiring large amounts of current (esp. for being able to provide power to multiple loads).
Dependent Claims 6 and 18, the combination of Dong and Kano teaches the second charging current level is less than the manufacturer rated charging current (Kano: see around 30 minutes into the program is below the 1C rating of ~2.9A).
Claims 7-10, 19, and 20 are rejected under 35 U.S.C. 103 as being unpatentable over Dong in view of Kano, further in view of Nishino et al (USPGPN 20140375279), as evidenced by Panasonic, Suzuki, Yang, and Suzuki2
Dependent claim 7, the combination of Dong and Kano teaches the method of claim 1, including currents with respect to a manufacturer’s rated charging current.
Dong is silent to stepping up the charging current to a third charging current level, the third charging current level is greater than the first charging current.
Nishino teaches a charging method for batteries including at least three consecutive charging stages. Nishino teaches stepping up the charging current to a third charging current level (see ¶[31] “The constant current charging includes at least three consecutive charging stages. The at least three consecutive charging stages include consecutive first, second, and third charging stages. The second charging stage has a set current value which is set lower than set current values of the first and third charging stages.”). The second charging current level is lower than the first to decrease the amount of damage done to the battery, while the third charging current level is brought to higher level again to decrease the charging time required for the battery while mitigating loss of battery life (¶[22])
It would have been obvious to one of ordinary skill in the art to modify Dong in view of Kano with Nishino by charging the battery with a charging profile that will both decrease charging time while still mitigating damage done to the battery.
Dependent claim 8, the combination of Dong and Kano teaches the method of claim 1.
Dong fails to explicitly teach the stepping up the charging current to the third charging current level being based on a parameter of the battery pack.
Nishino teaches the stepping up the charging current to the third charging current level being based on a parameter of the battery pack (see ¶[44], teaches changing the current level based on the state of charge of the battery).
Dependent claim 9, the combination of Dong and Kano teaches the method of claim 1.
Dong fails to explicitly teach the parameter including at least one of a state-of-charge, a temperature, a cell age, a cell health, and a charge acceptance based differential voltage.
Nishino teaches the parameter including at least one of a state-of-charge, a temperature, a cell age, a cell health, and a charge acceptance based differential voltage (see ¶0044) citing specifically the state-of-charge as the parameter.
Dependent claim 10, the combination of Dong and Kano teaches the method of claim 1.
Dong fails to explicitly teach a charging time of the one or more battery cells less than 1700 seconds.
It is well known within the art that charging time is dependent on charging current. Therefore, it would have been obvious to try, an obvious design choice, and well known to one of ordinary skill in the art that adjusting the charging current will result in a different charging time enabling one to select a preferred charging time based on the charging current.
Dependent claim 19, Dong in view of Kano teaches the apparatus of claim 15, including currents with respect to a manufacturer’s rated charging current.
Dong fails to explicitly disclose stepping up the charging current to a third charging current level, the third charging current level is greater than the a second charging current.
Nishino teaches a charging method for batteries including at least three consecutive charging stages. Nishino teaches stepping up the charging current to a third charging current level (see ¶[31] “The constant current charging includes at least three consecutive charging stages. The at least three consecutive charging stages include consecutive first, second, and third charging stages. The second charging stage has a set current value which is set lower than set current values of the first and third charging stages.”). The second charging current level is lower than the first to decrease the amount of damage done to the battery, while the third charging current level is brought to higher level again to decrease the charging time required for the battery while mitigating loss of battery life (¶[22])
It would have been obvious to one of ordinary skill in the art to modify Dong in view of Kano with Nishino by charging the battery with a charging profile that will both decrease charging time while still mitigating damage done to the battery.
Dependent Claim 20, the combination of Dong and Kano teaches the method of claim 1.
Dong fails to explicitly teach the step up of the charging current to the third charging current level being based on a parameter of the battery pack; and the parameter including at least one of a state-of-charge, a temperature, a cell age, a cell health, and a charge acceptance based differential voltage.
Nishino teaches the step up of the charging current to the third charging current level is based on a parameter of the battery pack; and the parameter includes at least one of a state-of-charge, a temperature, a cell age, a cell health, and a charge acceptance based differential voltage (see ¶[44]) citing specifically the state-of-charge as the parameter.
Claims 12 is rejected under 35 U.S.C. 103 as being unpatentable over Dong (USPGPN 20150162758) in view of Weicker et al (USPGPN 20180131204) , as evidenced by Panasonic ( “Lithium Ion UR18650SA,” Panasonic Sanyo Energy USA Corporation, Version 13.02 R1, Published 2012, www.megacellmonitor.com/pdf/vendor_specs/SPEC_SANYO_UR18650SA.pdf ) and Weicker et al (USPGPN 20180131204).
Dependent Claim 12, Dong teaches the predetermined maximum charging voltage limit is 4.2 volts (Panasonic provides evidence that the limit is 4.2 V);
While Dong may be silent to the voltage exceeding the predetermined maximum charging voltage limit is at least 4.4 volts, Dong teaches a voltage of 4.36V or 4.38V, which is very close to 4.4V (and Fig. 6 shows it at approximately at 4.4V). Stopping the charging operation at or above 4.4 volts would be a design/operational choice by the user/designer of the method for the purposes of addressing a higher resistance measurement (¶[63]) or to satisfy a user (¶[21] of Weicker).
Or in the alternative, if the applicant argues the design choice is not obvious, Weicker teaches the voltage exceeding the predetermined maximum charging voltage limit is at least 4.4 volts (¶[21]), which is performed to meet a users desires (i.e. improving the convenience/ satisfaction for a user to be able to set their own level, see analogous steps sin Figs. 2-4).
It would have been obvious to one of ordinary skill in the art to modify Dong with Weicker to provide improved convenience and satisfaction.
Claims 13 and 14 are rejected under 35 U.S.C. 103 as being unpatentable over Dong (USPGPN 20150162758), as evidenced by Panasonic ( “Lithium Ion UR18650SA,” Panasonic Sanyo Energy USA Corporation, Version 13.02 R1, Published 2012, www.megacellmonitor.com/pdf/vendor_specs/SPEC_SANYO_UR18650SA.pdf ).
Dependent Claim 13, Dong is silent to the manufacturer rated charging current is at least 6 Amperes. However, Panasonic does demonstrate the rated charging current for the cell as being 0.88A, which means 8 or more of these cells in parallel in a single battery pack would demonstrate a manufacturer rated charging current for the pack of at least 6 amperes. While Dong is silent to the cell assembly having either parallel or serial connections, it is Dong has left it open for a battery pack with 2+ cells in ¶’s [27, 07]. It would be a design choice to have the pack have that high of a current rating, esp. for large loads requiring large currents, where these 8+ parallel cells would be able to provide larger currents than 1 cell. Official notice taken that battery packs with more than 8 cells in parallel are well known in the art for the purpose of being able to reliably power large loads requiring large amounts of current (esp. for being able to provide power to multiple loads).
Dependent claim 14, Dong teaches the method of claim 11. Dong fails to explicitly teach a charging time of the one or more battery cells less than 600 seconds.
It is well known within the art that charging time is dependent on charging current. Therefore, it would have been obvious to try, an obvious design choice, and well known to one of ordinary skill in the art that adjusting the charging current will result in a different charging time enabling one to select a preferred charging time based on the charging current.
Conclusion
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/JOHN T TRISCHLER/ Primary Examiner, Art Unit 2859
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