Prosecution Insights
Last updated: April 19, 2026
Application No. 18/139,358

CHARGING METHOD, CHARGING APPARATUS, AND CHARGING SYSTEM FOR TRACTION BATTERY

Non-Final OA §102§103§112§DP
Filed
Apr 26, 2023
Examiner
JEPPSON, PAMELA J
Art Unit
2859
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
OA Round
1 (Non-Final)
66%
Grant Probability
Favorable
1-2
OA Rounds
3y 4m
To Grant
88%
With Interview

Examiner Intelligence

Grants 66% — above average
66%
Career Allow Rate
65 granted / 98 resolved
-1.7% vs TC avg
Strong +21% interview lift
Without
With
+21.4%
Interview Lift
resolved cases with interview
Typical timeline
3y 4m
Avg Prosecution
60 currently pending
Career history
158
Total Applications
across all art units

Statute-Specific Performance

§101
3.3%
-36.7% vs TC avg
§103
55.8%
+15.8% vs TC avg
§102
15.8%
-24.2% vs TC avg
§112
21.4%
-18.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 98 resolved cases

Office Action

§102 §103 §112 §DP
DETAILED ACTION 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 . Status of the Claims In the communication dated April 26, 2023, claims 1-12 are pending. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 1-12 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Claim 1 recites the limitation "”the discharge stage" in line 9. There is insufficient antecedent basis for this limitation in the claim. Claim 2 recites the limitation “a current voltage” in line 3. It is uncertain as to whether this is the same “a current voltage” in claim 1, line 9. Claim 6 recites the limitation "”the discharge stage" in line 9. There is insufficient antecedent basis for this limitation in the claim. Claim 7 recites the limitation “a current voltage” in line 3. It is uncertain as to whether this is the same “a current voltage” in claim 1, line 9. Claim 11 recites the limitation “EMS” in line 1. It leave uncertainty as to what EMS stands for. Double Patenting The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A nonstatutory double patenting rejection is appropriate where the conflicting claims are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on nonstatutory double patenting provided the reference application or patent either is shown to be commonly owned with the examined application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. See MPEP § 717.02 for applications subject to examination under the first inventor to file provisions of the AIA as explained in MPEP § 2159. See MPEP § 2146 et seq. for applications not subject to examination under the first inventor to file provisions of the AIA . A terminal disclaimer must be signed in compliance with 37 CFR 1.321(b). The filing of a terminal disclaimer by itself is not a complete reply to a nonstatutory double patenting (NSDP) rejection. A complete reply requires that the terminal disclaimer be accompanied by a reply requesting reconsideration of the prior Office action. Even where the NSDP rejection is provisional the reply must be complete. See MPEP § 804, subsection I.B.1. For a reply to a non-final Office action, see 37 CFR 1.111(a). For a reply to final Office action, see 37 CFR 1.113(c). A request for reconsideration while not provided for in 37 CFR 1.113(c) may be filed after final for consideration. See MPEP §§ 706.07(e) and 714.13. The USPTO Internet website contains terminal disclaimer forms which may be used. Please visit www.uspto.gov/patent/patents-forms. The actual filing date of the application in which the form is filed determines what form (e.g., PTO/SB/25, PTO/SB/26, PTO/AIA /25, or PTO/AIA /26) should be used. A web-based eTerminal Disclaimer may be filled out completely online using web-screens. An eTerminal Disclaimer that meets all requirements is auto-processed and approved immediately upon submission. For more information about eTerminal Disclaimers, refer to www.uspto.gov/patents/apply/applying-online/eterminal-disclaimer. Claims 1-3, 6-8 and 11-12 are provisionally rejected on the ground of nonstatutory double patenting as being unpatentable over claim 1-4, 6-9 of copending Application No. 18/305,570 in view of Lee KR101969301B1. Present Application Reference Application 1. A charging method for traction battery, applied to a charging apparatus, characterized in that the charging apparatus comprises N energy storage units connected in series, each energy storage unit comprises an energy storage battery and a first DC/DC converter connected to the energy storage battery, and each charging period of the charging apparatus comprises a stage in which the traction battery is charged and a stage in which the traction battery discharges to the N energy storage units, N being a positive integer greater than 1; and the charging method comprises: in the discharge stage, obtaining a current voltage of the energy storage battery in each energy storage unit; determining, based on the current voltage of the energy storage battery in each energy storage unit, a first voltage output by the first DC/DC converter in each energy storage unit, wherein the first voltage output by the first DC/DC converter in each energy storage unit is inversely proportional to the current voltage of the energy storage battery in each energy storage unit; and sending a first control signal to the first DC/DC converter in each energy storage unit, wherein the first control signal is used to control the first DC/DC converter to output the first voltage, so as to cause the energy storage battery in each energy storage unit to receive, at the first voltage via the first DC/DC converter in each energy storage unit, electrical energy released by the traction battery. 1. A charging method for a traction battery, performed by a charging apparatus, wherein the charging apparatus comprises N energy storage units connected in parallel, each energy storage unit comprises an energy storage battery and a first DC/DC converter connected to the energy storage battery, and each charging period of the charging apparatus comprises a stage in which the traction battery is charged and a stage in which the traction battery discharges to the N energy storage units, N being a positive integer greater than 1; wherein the charging method comprises: obtaining a first parameter of each energy storage unit in the discharge stage; determining, based on the first parameter, a first current output by the first DC/DC converter in each energy storage unit, wherein the first current output by the first DC/DC converter in each energy storage unit is inversely proportional to the first parameter of the energy storage unit; and sending a first control signal to the first DC/DC converter in each energy storage unit, wherein the first control signal is used to control the first DC/DC converter to output the first current, so as to cause the first DC/DC converter in each energy storage unit to receive, at the first current, electrical energy released by the traction battery. 3. The charging method according to claim 1, wherein the first parameter of each energy storage unit comprises at least one of the following parameters: current state of charge (SOC) of the energy storage battery in each energy storage unit; current voltage of the energy storage battery in each energy storage unit; and current voltage of each energy storage unit. 2. The charging method according to claim 1, characterized in that the method further comprises: in the charge stage, obtaining a current voltage of the energy storage battery in each energy storage unit; determining, based on the current voltage of the energy storage battery in each energy storage unit, a second voltage output by the first DC/DC converter in each energy storage unit, wherein the second voltage output by the first DC/DC converter in each energy storage unit is proportional to the current voltage in each energy storage unit; and sending a second control signal to the first DC/DC converter in each energy storage unit, wherein the second control signal is used to control the first DC/DC converter to output the second voltage, so as to cause the energy storage battery in each energy storage unit to charge the traction battery at the second voltage via the first DC/DC converter in each energy storage unit. 2. The charging method according to claim 1, wherein the method further comprises: obtaining the first parameter of each energy storage unit in the charge stage; determining, based on the first parameter, a second current output by the first DC/DC converter in each energy storage unit, wherein the second current output by the first DC/DC converter in each energy storage unit is proportional to the first parameter of the energy storage unit; and sending a second control signal to the first DC/DC converter in each energy storage unit, wherein the second control signal is used to control the first DC/DC converter to output the second current, so as to cause the first DC/DC converter in each energy storage unit to charge the traction battery at the second current. 3. The charging method according to claim 1, characterized in that the charging apparatus further comprises a separating unit, wherein the separating unit is connected between the N energy storage units and the traction battery, and the separating unit comprises M second DC/DC converters and a switch module connected between the M second DC/DC converters, M being a positive integer greater than or equal to 2; andthe charging method further comprises: controlling the switch module to make the M second DC/DC converters connected in series, so that voltage output by the separating unit to the traction battery is M times voltage output by the N energy storage units; or controlling the switch module to make the M second DC/DC converters connected in parallel, so that current output by the separating unit to the traction battery is M times current output by the N energy storage units. 4. The charging method according to claim 1, wherein the charging apparatus further comprises a separating unit, the separating unit is connected between the N energy storage units and the traction battery, and the separating unit comprises M second DC/DC converters and a switch module connected between the M second DC/DC converters, M being a positive integer greater than or equal to 2; and wherein the charging method further comprises: controlling the switch module to make the M second DC/DC converters connected in series, so that voltage output by the separating unit to the traction battery is M times voltage output by the N energy storage units; or controlling the switch module to make the M second DC/DC converters connected in parallel, so that current output by the separating unit to the traction battery is M times current output by the N energy storage units. 11. An EMS, comprising a processor, wherein the processor is configured to perform the charging method according to claim 1. 11. An energy management system (EMS), comprising a processor, wherein the processor is configured to perform the charging method according to claim 1. 12. A charging system, characterized by comprising: a traction battery; and the charging apparatus according to claim 6, wherein the charging apparatus is configured to charge the traction battery, and each charging period comprises a stage in which the traction battery is charged and a stage in which the traction battery discharges. 12. A charging system, comprising: a traction battery; and the charging apparatus according to claim 6, wherein the charging apparatus is configured to charge the traction battery, and each charging period comprises a stage in which the traction battery is charged and a stage in which the traction battery discharges. Regarding claims 1 and 2, the reference claims do not explicitly teach that the energy storage units are connected in series. Lee teaches the charging apparatus comprises N energy storage units (221/231, 222/232, 22N/23N) connected in series (FIG. 2). It would be obvious to a person of ordinary skill in the art to provide a known arrangement of storage units in order to increase the voltage of the system. Claims 4-5 and 9-10 are provisionally rejected on the ground of nonstatutory double patenting as being unpatentable over claim 1-4, 6-9 of copending Application No. 18/305,570 in view of Lee KR101969301B1 and further in view of Gohla-Neudecker et al. US20200001730A1. 4. The charging method according to claim 1, characterized in that the charging apparatus further comprises an AC/DC converter, wherein the AC/DC converter is connected between the traction battery and an alternating current power supply; and the charging method further comprises: sending a third control signal to the AC/DC converter, wherein the third control signal is used to control voltage output by the AC/DC converter to be equal to charging voltage of the traction battery, so as to cause the alternating current power supply to charge the traction battery at the charging voltage via the AC/DC converter. 5. The charging method according to claim 1, wherein the charging apparatus further comprises an AC/DC converter, the AC/DC converter is connected between the traction battery and an alternating current power supply, so as to cause the alternating current power supply to charge the traction battery via the AC/DC converter. Regarding claim 4, the reference claims do not explicitly recite the charging method further comprises: sending a third control signal to the AC/DC converter, wherein the third control signal is used to control voltage output by the AC/DC converter to be equal to charging voltage of the traction battery. Gohla-Neudecker teaches sending a third control signal to the AC/DC converter (FIG. 3 - from charge control device 15), wherein the third control signal is used to control voltage output by the AC/DC converter to be equal to charging voltage of the traction battery, so as to cause the alternating current power supply to charge the traction battery at the charging voltage via the AC/DC converter (FIG. 3; ¶6 – charge control device 15 requests a required charging voltage to the AC-DC converter, voltage travels through the AC/DC converter thus being a supply of power to the traction battery; ¶14 – the DC bus is coupled to the supply grid exclusively via the AC-DC converter) . It would be obvious to for one of ordinary skill in the art to have adapted Gohla-Neudecker’s AC-DC converter and power grid to traction battery charging method into the reference claims charging system. The advantage to this being the network stability in an electrical supply network is ensured even during charging/discharging of the electrically operable motor vehicle (Gohla-Neudecker; ¶12). Regarding claim 5, the references claims do not explicitly teach the charging method further comprises: sending a fourth control signal to the AC/DC converter, wherein the fourth control signal is used to control voltage output by the AC/DC converter to be equal to discharging voltage of the traction battery, so as to cause the traction battery to discharge to the alternating current power supply at the discharging voltage via the AC/DC converter. Gohla-Neudecker teaches sending a fourth control signal to the AC/DC converter, wherein the fourth control signal is used to control voltage output by the AC/DC converter to be equal to discharging voltage of the traction battery, so as to cause the traction battery to discharge to the alternating current power supply at the discharging voltage via the AC/DC converter (¶14 – bidirectionally operated AC-DC converter coupling the DC bus to the supply grid; ¶15 – discharging process from the motor vehicle through the DC-DC converter and the AC-DC converter). It would be obvious to for one of ordinary skill in the art to have adapted Gohla-Neudecker’s AC-DC converter and power grid to traction battery charging method into the reference claims charging system. The advantage to this being the network stability in an electrical supply network is ensured even during charging/discharging of the electrically operable motor vehicle (Gohla-Neudecker; ¶12). Claims 6-10 of the present application correspond to claims 6-10 of the reference claims in a manner similar to that of claims 1-5 of the present application. This is a provisional nonstatutory double patenting rejection. 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. Claims 1-2, 6-7 and 12 are rejected under 35 U.S.C. 102(a)(1)/(a)(2) as being anticipated by Lee KR101969301B1. Regarding claim 1. Lee teaches a charging method for traction battery (110), applied to a charging apparatus (FIG. 2), characterized in that the charging apparatus comprises N energy storage units (221/231, 222/232, 22N/23N) connected in series (FIG. 2), each energy storage unit (221/231, 222/232, 22N/23N) comprises an energy storage battery (231/232/23N) and a first DC/DC converter (221/222/22N) connected to the energy storage battery (FIG. 2), and each charging period of the charging apparatus comprises a stage in which the traction battery is charged (FIGS. 3a-3c) and a stage in which the traction battery discharges to the N energy storage units (FIG. 4a-4c), N being a positive integer greater than 1 (21N); and the charging method comprises: in the discharge stage, obtaining a current voltage of the energy storage battery in each energy storage unit (page 5, 3rd full paragraph - the charge / discharge control unit 240 receives SOC (State Of Charge) of each of the plurality of battery cells 211 to 21N); determining, based on the current voltage of the energy storage battery in each energy storage unit, a first voltage output by the first DC/DC converter in each energy storage unit, wherein the first voltage output by the first DC/DC converter in each energy storage unit is inversely proportional to the current voltage of the energy storage battery in each energy storage unit ( When the battery 210 is being charged from the converter 221, the battery voltage is less than that being received by the converter – page 5, last paragraph - “The lower switching device S2_B of the converter 222 connected in parallel to the overdischarged specific battery cell 212 can be turned on, as shown in FIGS. The current thus flows through the lower switching element S2_B of the converter 222 connected in parallel to the battery cell 212 as shown at 403 to overcharge the particular battery cell 212 ”); and sending a first control signal (240) to the first DC/DC converter (220) in each energy storage unit (230), wherein the first control signal is used to control the first DC/DC converter to output the first voltage (control unit 240 turns switches on/off to control either charging/discharging from the converter 220), so as to cause the energy storage battery in each energy storage unit to receive, at the first voltage via the first DC/DC converter in each energy storage unit, electrical energy released by the traction battery (page 5 – 4th paragraph - “the charging / discharging control unit 240 applies the lower switching signal (turn-off signal) to the lower switching devices S1_B to SN_B so that the lower switching devices S1_B to SN_B (The upper switching elements S1_T to SN_T are still turned off). Accordingly, the energy stored in the inductor L_s can be transmitted to the battery unit 210.”). Regarding claim 6. Lee teaches a charging apparatus (FIG. 2)for traction battery (110), characterized in that the charging apparatus (FIG. 2) comprises N energy storage units (221/231, 222/232, 22N/23N) connected in series (FIG. 2) and a control unit (240), wherein each energy storage unit (221/231, 222/232, 22N/23N) comprises an energy storage battery (231/232/23N) and a first DC/DC converter (221/222/22N) connected to the energy storage battery (231/232/23N), and each charging period of the charging apparatus comprises a stage in which the traction battery is charged (FIGS. 3a-3c) and a stage in which the traction battery discharges to the N energy storage units (FIG. 4a-4c),, N being a positive integer greater than 1 (21N); and the control module (240) is configured to: in the discharge stage, obtain a current voltage of the energy storage battery in each energy storage unit (page 5, 3rd full paragraph - the charge / discharge control unit 240 receives SOC (State Of Charge) of each of the plurality of battery cells 211 to 21N); determine, based on the current voltage of the energy storage battery in each energy storage unit, a first voltage output by the first DC/DC converter in each energy storage unit, wherein the first voltage output by the first DC/DC converter in each energy storage unit is inversely proportional to the current voltage of the energy storage battery in each energy storage unit ( When the battery 210 is being charged from the converter 221, the battery voltage is less than that being received by the converter - page 5, last paragraph - “The lower switching device S2_B of the converter 222 connected in parallel to the overdischarged specific battery cell 212 can be turned on, as shown in FIGS. The current thus flows through the lower switching element S2_B of the converter 222 connected in parallel to the battery cell 212 as shown at 403 to overcharge the particular battery cell 212 ”); and send a first control signal (240) to the first DC/DC converter (220) in each energy storage unit (230), wherein the first control signal is used to control the first DC/DC converter to output the first voltage (control unit 240 turns switches on/off to control either charging/discharging from the converter 220), so as to cause the energy storage battery in each energy storage unit to receive, at the first voltage via the first DC/DC converter in each energy storage unit, electrical energy released by the traction battery (page 5 – 4th paragraph “the charging / discharging control unit 240 applies the lower switching signal (turn-off signal) to the lower switching devices S1_B to SN_B so that the lower switching devices S1_B to SN_B (The upper switching elements S1_T to SN_T are still turned off). Accordingly, the energy stored in the inductor L_s can be transmitted to the battery unit 210.”). Regarding claim 2 and claim 7. The charging method according to claim 1, characterized in that the method further comprises: in the charge stage, obtaining a current voltage of the energy storage battery in each energy storage unit (page 5, 3rd paragraph - “the charge / discharge control unit 240 receives SOC (State Of Charge) of each of the plurality of battery cells 211 to 21N); determining, based on the current voltage of the energy storage battery in each energy storage unit, a second voltage output by the first DC/DC converter in each energy storage unit, wherein the second voltage output by the first DC/DC converter in each energy storage unit is proportional to the current voltage of the energy storage battery in each energy storage unit ( When the battery is providing charge to the converter 221, the battery voltage is more than that of the traction battery 110 – page 4, last paragraph - “The energy based on the sum of the voltages of the plurality of battery cells 211 to 21N and the voltage of the DC power system (DC grid +, DC grid-) is discharged during the turn-on period of the upper switching elements S1_T to SN_T, (L_s).”); and sending a second control signal (from 240) to the first DC/DC converter (220) in each energy storage unit, wherein the second control signal is used to control the first DC/DC converter (220) to output the second voltage, so as to cause the energy storage battery in each energy storage unit to charge the traction battery at the second voltage via the first DC/DC converter in each energy storage unit (page 4, last paragraph - “Discharge control section 240 can turn on the upper switching elements S1_T to SN_T by applying the upper switching signal (turn-on signal) to the upper switching elements S1_T to SN_T And the lower switching elements S1_B to SN_B are turned off”).. Regarding claim 12. Lee teaches a charging system, characterized by comprising: a traction battery (battery of a vehicle 110); and the charging apparatus according to claim 6, wherein the charging apparatus is configured to charge the traction battery (page 3, first paragraph - “the energy charged in the battery unit 210 is discharged to the DC power system DC grid +”), and each charging period comprises a stage in which the traction battery is charged (page 3, 1st paragraph - “the energy charged in the battery unit 210 is discharged to the DC power system DC grid +”) and a stage in which the traction battery discharges (page 3, last paragraph - “The inductor L_s is connected in series to the upper switching elements S1_T to SN_T and is turned on and off in accordance with the applied lower switching signal to thereby charge the energy stored in the inductor L_s into the battery 210 “). Claim Rejections - 35 USC § 103 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. Claims 3 and 8 are rejected under 35 U.S.C. 103 as being unpatentable over Lee KR101969301B1 in view of Barker et al. US20160344286A1. Regarding claim 3 and claim 8. Lee does not explicitly a separating unit, wherein the separating unit is connected between the N energy storage units and the traction battery, and the separating unit comprises M second DC/DC converters and a switch module connected between the M second DC/DC converters, M being a positive integer greater than or equal to 2; and the charging method further comprises: controlling the switch module to make the M second DC/DC converters connected in series, so that voltage output by the separating unit to the traction battery is M times voltage output by the N energy storage units; or controlling the switch module to make the M second DC/DC converters connected in parallel, so that current output by the separating unit to the traction battery is M times current output by the N energy storage units. Barker teaches a separating unit (FIG. 3), the separating unit comprises M second DC/DC converters (302) and a switch module (304) connected between the M second DC/DC converters (FIG. 3), M being a positive integer greater than or equal to 2 (FIG. 3 illustrates 4); and the charging method further comprises: controlling the switch module to make the M second DC/DC converters connected in series, so that voltage output by the separating unit to the traction battery is M times voltage output by the N energy storage units (FIG. 5A; the switches are arranged in series so that the voltage outputted is M times greater); or controlling the switch module to make the M second DC/DC converters connected in parallel, so that current output by the separating unit to the traction battery is M times current output by the N energy storage units (FIG. 5B; the switches are arranged in parallel so that the current outputted is M times greater). Lee discloses the claimed invention except for the separating unit is connected between the N energy storage units and the traction battery. It would have been obvious for one of ordinary skill in the art to have adapted Barker’s converter and switching circuit into Lee’s charging apparatus between the power storage and the batteries in order to have an ability to convert the voltage and current during the charge and discharge process. The advantage to adapting such a converter and switching circuit being that design and manufacturing requirements are improved by utilizing a readily scalable design in which the clusters of the converter may be selected given the functional environment of the circuit (Barker; ¶18). Claims 4-5 and 9-10 are rejected under 35 U.S.C. 103 as being unpatentable over Lee KR101969301B1 in view of Gohla-Neudecker et al. US20200001730A1. Regarding claim 4 and claim 9. Lee does not explicitly disclose that the charging apparatus further comprises an AC/DC converter, wherein the AC/DC converter is connected between the traction battery and an alternating current power supply; and the charging method further comprises: sending a third control signal to the AC/DC converter, wherein the third control signal is used to control voltage output by the AC/DC converter to be equal to charging voltage of the traction battery, so as to cause the alternating current power supply to charge the traction battery at the charging voltage via the AC/DC converter. Gohla-Neudecker teaches that the charging apparatus further comprises an AC/DC converter (17) wherein the AC/DC converter (17) is connected between the traction battery (found in vehicle 13) and an alternating current power supply (10) (FIG. 3; an AC/DC converter 17 connected between the traction battery 32 and the supply grid 10 so as to cause the supply grid 10 to charge the traction battery 32 via the AC/DC converter 17); and the charging method further comprises: sending a third control signal to the AC/DC converter (FIG. 3 - from charge control device 15), wherein the third control signal is used to control voltage output by the AC/DC converter to be equal to charging voltage of the traction battery, so as to cause the alternating current power supply to charge the traction battery at the charging voltage via the AC/DC converter (FIG. 3; ¶6 – charge control device 15 requests a required charging voltage to the AC-DC converter, voltage travels through the AC/DC converter thus being a supply of power to the traction battery; ¶14 – the DC bus is coupled to the supply grid exclusively via the AC-DC converter) . It would be obvious to for one of ordinary skill in the art to have adapted Gohla-Neudecker’s AC-DC converter and power grid to traction battery charging method into Lee’s charging system. The advantage to this being the network stability in an electrical supply network is ensured even during charging/discharging of the electrically operable motor vehicle (Gohla-Neudecker; ¶12) Regarding claim 5 and claim 10. Lee does not explicitly disclose sending a fourth control signal to the AC/DC converter, wherein the fourth control signal is used to control voltage output by the AC/DC converter to be equal to discharging voltage of the traction battery, so as to cause the traction battery to discharge to the alternating current power supply at the discharging voltage via the AC/DC converter. Gohla-Neudecker teaches sending a fourth control signal to the AC/DC converter, wherein the fourth control signal is used to control voltage output by the AC/DC converter to be equal to discharging voltage of the traction battery, so as to cause the traction battery to discharge to the alternating current power supply at the discharging voltage via the AC/DC converter (¶14 – bidirectionally operated AC-DC converter coupling the DC bus to the supply grid; ¶15 – discharging process from the motor vehicle through the DC-DC converter and the AC-DC converter). It would be obvious to for one of ordinary skill in the art to have adapted Gohla-Neudecker’s AC-DC converter and power grid to traction battery charging method into Lee’s charging system. The advantage to this being the network stability in an electrical supply network is ensured even during charging/discharging of the electrically operable motor vehicle (Gohla-Neudecker; ¶12) Claim 11 is rejected under 35 U.S.C. 103 as being unpatentable over Lee KR101969301B1. Regarding claim 11. Lee teaches an EMS (controller - 240) configured to perform the charging method according to claim 1. Although a processor is not explicitly taught, it is routine in the art to provide a processor to a controller to execute a process, thus, one of ordinary skill in the art would understand that the controller of Lee includes a processor to execute the charging instructions. Relevant Prior Art The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Kim et al. US20180093583A1 – discloses the structure of claim 1 except a parallel configuration. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to PAMELA JEPPSON whose telephone number is (571)272-4094. The examiner can normally be reached Monday-Friday 7:30 AM - 5:00 PM.. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Drew Dunn can be reached at 571-272-2312. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /PAMELA J JEPPSON/Examiner, Art Unit 2859 /DREW A DUNN/Supervisory Patent Examiner, Art Unit 2859
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Prosecution Timeline

Apr 26, 2023
Application Filed
Feb 20, 2026
Non-Final Rejection — §102, §103, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12549019
SYSTEM AND METHOD FOR TRACKING AND ARCHIVING BATTERY PERFORMANCE DATA
2y 5m to grant Granted Feb 10, 2026
Patent 12531431
CHARGING CONTROL METHOD, ELECTRONIC DEVICE AND STORAGE MEDIUM
2y 5m to grant Granted Jan 20, 2026
Patent 12519145
BATTERY CHARGER AND CHARGING CONTROL METHOD
2y 5m to grant Granted Jan 06, 2026
Patent 12496919
SUPPORT SERVER, DISASTER SUPPORT SYSTEM, AND STORAGE MEDIUM
2y 5m to grant Granted Dec 16, 2025
Patent 12483043
BI-DIRECTIONAL ACTIVE BATTERY CELL BALANCER AND METHOD FOR BI-DIRECTIONAL CELL BALANCING
2y 5m to grant Granted Nov 25, 2025
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
66%
Grant Probability
88%
With Interview (+21.4%)
3y 4m
Median Time to Grant
Low
PTA Risk
Based on 98 resolved cases by this examiner. Grant probability derived from career allow rate.

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