Prosecution Insights
Last updated: April 19, 2026
Application No. 18/034,332

ELECTRIC VEHICLE CHARGING CONTROL METHOD AND APPARATUS

Non-Final OA §103
Filed
Apr 27, 2023
Examiner
DIAO, M BAYE
Art Unit
2859
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Changchun Jetty Automotive Parts Corporation
OA Round
1 (Non-Final)
88%
Grant Probability
Favorable
1-2
OA Rounds
2y 7m
To Grant
91%
With Interview

Examiner Intelligence

Grants 88% — above average
88%
Career Allow Rate
1247 granted / 1424 resolved
+19.6% vs TC avg
Minimal +3% lift
Without
With
+3.4%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
40 currently pending
Career history
1464
Total Applications
across all art units

Statute-Specific Performance

§101
5.5%
-34.5% vs TC avg
§103
39.1%
-0.9% vs TC avg
§102
24.2%
-15.8% vs TC avg
§112
22.6%
-17.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1424 resolved cases

Office Action

§103
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 . Acknowledgement is made of application #18/034,332 filed on 04/27/2023 in which claims 1-27 have been presented for examination. Response to Preliminary Amendment Acknowledgement is made of preliminary amendment filed on 04/27/2023 in which claims 4,9,12,14,19,22 are currently amended while claims 5,10-11,15,23,26 and 27 have been canceled. By this amendment, claims 1-4,6-9,12-14,16-22,24 and 25 are pending in the application for prosecution in a first action on the merits. Priority Receipt is acknowledged of certified copies of papers required by 37 CFR 1.55. Information Disclosure Statement The information disclosure statements (IDS) submitted on 04/27/2023,09/13/2023, 12/22/2023, 06/14/2024,10/02/2024,12/19/2024,05/19/2025,08/19/2025 and 11/14/2025 are in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statements are being considered by the examiner and placed of record. Initialed copies are attached herewith. 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. Claim(s) 1-2,6-8,17,19-20,24-25 are rejected under 35 U.S.C. 103 as being unpatentable over CN 110673667 A to Li et al.,(Machine Translation)(also cited by applicants) in view of Huang et al., (Huang) US 2017/0334300 A1. Regarding claims 1 and 19: Li at least discloses and shows in Fig. 1: An electric vehicle charging control method(an intelligent temperature control method and device for a vehicle charging connection device)(as per claim 19), comprising: periodically obtaining a working temperature(see prongs 1) ,2) and 3) on page 1 ); maintaining a charging power output to an electric vehicle at a first charging power(note- a) If T1 <Ta <T2, the charging current value continues to be I; see prong a), page 3) and triggering a first prompt signal(construed as reducing the charging current if it is detected that the temperature of the charging connection device is greater than the upper limit of the working temperature range; see prong 1), page 1 ) when the working temperature is greater than or equal to a first temperature threshold and less than a second temperature threshold(note that the working temperature range comprises a lower limit temperature threshold and an upper limit temperature threshold. The optimal working temperature range is set to (T1~T2). If Ta continues to decrease and stabilize, T1 <Ta <T2, the charging current is maintained at (1-b%) * I see page 3 ). Li does not expressly teach the limitations of: and reducing the charging power output to the electric vehicle from the first charging power to a second charging power, when the working temperature is greater than or equal to the second temperature threshold and less than a third temperature threshold. However, Huang teaches and shows in Figs. 6 and 8, factual evidence of, reducing the charging power output to the electric vehicle from the first charging power(see step 1130 and 1150 of Fig. 6; first charging power being the charging current in Temperature range T≤142)) to a second charging power(see Fig. 8 and charging current for temperature 142<T<146), when the working temperature is greater than or equal to the second temperature threshold(146) and less than a third temperature threshold(148)(see Fig. 8)(see [0043]-[0046]). Li and Huang are electric vehicle charging systems analogous art. Therefore it would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention before the effective filing date of the claimed invention to modify the charging system of Li with the second current versus temperature profile of Huang as disclosed in Fig. 8, in reducing the charging power output to the electric vehicle from the first charging power to a second charging power, when the working temperature is greater than or equal to the second temperature threshold and less than a third temperature threshold, as recited, in order to ensure that the charging current is adjusted gradually in response to the temperature increase, in order to find a changing current level that may continue to charge vehicle while keeping the temperature below the hazardous level, as per the teachings of Huang ([0043]). Accordingly claims 1 and 19 would have been obvious. Regarding claims 2 and 20, Li in view of Huang discloses all the claimed invention as set forth and discussed above in claim 1 and 19 respectively. Li discloses, further comprising: stopping charging the electric vehicle when the working temperature is greater than or equal to the third temperature threshold(note- prong 3) continue to detect the temperature of the charging connection device, and repeat steps 1) and 2). If the ratio of the reduced charging current to the initial charging current is less than a set threshold, charging is stopped; see page 2, lines 36-37. Also because the steps are repeated, the working temperature can be as well set to the third temperature threshold). Regarding claims 6 and 24, Li in view of Huang discloses all the claimed invention as set forth and discussed above in claims 1 and 19 respectively. Li in view of Huang teaches, wherein maintaining the charging power output to an electric vehicle from the first charging power and triggering the first prompt signal, when the working temperature is greater than or equal to the first temperature threshold and less than the second temperature threshold. However, Li fails to expressly disclose the limitations of, further comprises: prompting a user of a state of the current working temperature through the first prompt signal by means of at least one selected from the group of sound, light, and vibration. Huang teaches factual evidence of, further comprises: prompting a user of a state of the current working temperature through the first prompt signal by means of at least one selected from the group of sound, light, and vibration(Huang; [0016]). It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to combine the teachings of Huang with Li to have, wherein maintaining the charging power output to an electric vehicle from the first charging power and triggering the first prompt signal, when the working temperature is greater than or equal to the first temperature threshold and less than the second temperature threshold further comprises: prompting a user of a state of the current working temperature through the first prompt signal by means of at least one selected from the group of sound, light, and vibration, as recited, so as to provide safety measure and protection to both the user and the vehicle battery system. Accordingly claim 6 would have been obvious Regarding claim 7, Li in view of Huang discloses all the claimed invention as set forth and discussed above in claim 1. Huang further teaches, wherein after reducing the charging power output to the electric vehicle from the first charging power(charging current at temperature 142 or less) to the second charging power(charging current between 142 and 146), when the working temperature is greater than or equal to the second temperature threshold(146) and less than the third temperature threshold(148), the method further comprises: further reducing the charging power output to the electric vehicle from the second charging power to a third charging power(charging current between 146 and 148) when the working temperature is in an ascending trend(note that temperatures are in an increasing order/trend from 142-> 146-> 148-> 144)(see Fig. 8)(see Huang [0043]-[0046]). Regarding claim 8, Li in view of Huang discloses all the claimed invention as set forth and discussed above in claim 1. Huang further teaches, wherein after reducing the charging power output to the electric vehicle from the first charging power to the second charging power, when the working temperature is greater than or equal to the second temperature threshold and less than the third temperature threshold, the method further comprises: stopping charging the electric vehicle when the working temperature is in an ascending trend(see Huang, [0043]). Furthermore, stopping the charging to the electric vehicle would ensure: if the temperature of plug adapter 110 exceeds second threshold temperature 144, processor 113 may turn the charging current off. The use of intermediate temperature thresholds ensures that the charging current is adjusted gradually in response to the temperature increase, in order to find a changing current level that may continue to charge vehicle 116 while keeping the temperature below the hazardous level, as per the teachings of Huang[0043]. Regarding claim 17, Li in view of Huang discloses all the claimed invention as set forth and discussed above in claim 1. Li further discloses, wherein maintaining the charging power output to the electric vehicle at the first charging power and triggering the first prompt signal, when the working temperature is greater than or equal to the first temperature threshold and less than the second temperature threshold(for T1<Ta<T2), is replaced by: reducing the charging power output(reduced by (1-b%)*I)(see Li; page 3, lines 34-38) to the electric vehicle from the first charging power(I) when the working temperature is greater than or equal to a first temperature threshold(T1) and less than a second temperature threshold(T2) (The optimal working temperature range is set to (T1~T2). If Ta continues to decrease and stabilize, T1 <Ta <T2, the charging current is maintained at (1-b%) * I, see page 3 ). Regarding claim 25, Li in view of Huang discloses all the claimed invention as set forth and discussed above in claim 19. Huang discloses, further comprising a communication unit(via infrared, Bluetooth®, wireless network, radio, or a near-field communication system; see [0025],[0035]-[0036]) configured to transmit first prompt information prompting a user that a current charging element temperature is high to an intelligent terminal of the user(to a portable device, user email account, or other user-associated electronic device)(see [0036]). Claims 3-4 and 21-22 are rejected under 35 U.S.C. 103 as being unpatentable over CN 110673667 A to Li et al.,(Machine Translation)(also cited by applicants) in view of Huang et al., (Huang) US 2017/0334300 A1 and in further view of Nishikawa et al., (Nishikawa) USPAT 9,515,498. Regarding claim 3 and 21, Li in view of Huang discloses all the claimed invention as set forth and discussed above in claim 1 The combination of Li and Huang fails to expressly disclose the limitations of, wherein periodically obtaining the working temperature further comprises: obtaining a working temperature of a power connector according to specified time. Nishikawa discloses and shows in Figs. 1,6A-6B and 8A,8B factual evidences of, wherein periodically obtaining the working temperature further comprises: obtaining a working temperature of a power connector(10) according to specified time(TM1, TM2,…TMn)(period of electric conduction TMi, i=1 to n) the control unit 20a then divides the difference by the detection period of the detected temperature to determine a differential value for the detected temperature and stores the difference in a memory (not shown in the drawings)(see Nishikawa; col. 7, lines 4-26). Nishikawa further discloses, a temperature detection unit 14a and Li ,Huang and Nishikawa are electric vehicle charging systems analogous art. Therefore it would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention before to combine Nishikawa with the charging system of Li in view of Huang by having, wherein periodically obtaining the working temperature further comprises: obtaining a working temperature of a power connector according to specified time, as recited, in order to avoid the recovery of the electric conduction and thereby preventing damage to the power plug, as per the teachings of Nishikawa (col. 7, lines 41-44). Regarding claim 4 and 22, Li in view of Huang discloses all the claimed invention as set forth and discussed above in claims 1 and 19 respectively. The combination of Li and Huang fails to expressly disclose the limitations of: wherein periodically obtaining the working temperature further comprises: setting a time interval for obtaining the working temperature according to a change trend of the working temperature or to a climate condition; the temperature detection unit is configured to collect the working temperature according to the time interval for obtaining the working temperature set by the charging control unit. However, Nishikawa discloses factual evidence of, wherein periodically obtaining the working temperature further comprises: setting a time interval for obtaining the working temperature according to a change trend(temperature gradient dT, which is a change in temperature with respect to a change of time) of the working temperature or to a climate condition; the temperature detection unit is configured to collect the working temperature according to the time interval for obtaining the working temperature set by the charging control unit(20a)(Note- the control unit 20a calculates the temperature gradient during a period of electric conduction TM1. Each time the temperature detection unit 14a transmits a detected temperature to the control unit 20a during the period of electric conduction TM1, the control unit 20a determines the difference between the currently transmitted detected temperature and the lastly transmitted detected temperature. The control unit 20a then divides the difference by the detection period of the detected temperature to determine a differential value for the detected temperature and stores the difference in a memory (not shown in the drawings). When the period of electric conduction TM1 ends, the control unit 20a temporarily ends the process of calculating the differential value for the detected temperature, see col. 7, lines 4-33). Therefore it would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention before to combine Nishikawa with the charging system of Li in view of Huang by having, wherein, the charging control unit is configured to set a time interval for obtaining the working temperature according to a change trend of the working temperature or to a climate condition; the temperature detection unit is configured to collect the working temperature according to the time interval for obtaining the working temperature set by the charging control unit, as recited, in order to for the control unit to keep the switching circuit in the OFF state to avoid the recovery of the electric conduction to the battery, as per the teachings of Nishikawa(col. 7, lines 26-33). Accordingly claims 4 and 22 would have been obvious. Allowable Subject Matter Claims 9,12-14,16 and 18 are objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to M'BAYE DIAO whose telephone number is (571)272-6127. The examiner can normally be reached M-F; 10:00AM-6:30PM and OFF most of the time Friday when working IFP. 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, TAELOR KIM can be reached at 571-270-7166. 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. M'BAYE DIAO Primary Examiner Art Unit 2859 /M BAYE DIAO/Primary Examiner, Art Unit 2859 February 12, 2026
Read full office action

Prosecution Timeline

Apr 27, 2023
Application Filed
Feb 12, 2026
Non-Final Rejection — §103 (current)

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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
88%
Grant Probability
91%
With Interview (+3.4%)
2y 7m
Median Time to Grant
Low
PTA Risk
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