Extract from the Register of European Patents

EP About this file: EP4450316

EP4450316 - HIGH-VOLTAGE INPUT UNDER-VOLTAGE FAULT DETECTION METHOD AND APPARATUS FOR ELECTRIC VEHICLE, AND STORAGE MEDIUM [Right-click to bookmark this link]
StatusRequest for examination was made
Status updated on  19.09.2024
Database last updated on 01.04.2026
FormerThe international publication has been made
Status updated on  24.06.2023
Most recent event   Tooltip14.03.2026Change - representative 
Applicant(s)For all designated states
Guangzhou Automobile Group Co., Ltd.
23/F Chengyue Building
No. 448-458 Dongfeng Middle Road
Yuexiu District
Guangzhou, Guangdong 510030 / CN
[N/P]
Former [2025/33]For all designated states
Guangzhou Automobile Group Co., Ltd.
23/F Chengyue Building
No.448-458 Dongfeng Middle Road
Yuexiu District
Guangzhou, Guangdong 510030 / CN
Former [2024/43]For all designated states
Guangzhou Automobile Group Co. Ltd.
23/F Chengyue Building
No. 448-458 Dongfeng Middle Road
Yuexiu District
Guangzhou, Guangdong 510030 / CN
Inventor(s)01 / QIU, Lin
Guangzhou, Guangdong 511434 / CN
02 / YI, Chen
Guangzhou, Guangdong 511434 / CN
03 / LI, Ronghua
Guangzhou, Guangdong 511434 / CN
04 / JIANG, Hai
Guangzhou, Guangdong 511434 / CN
05 / XU, Hongda
Guangzhou, Guangdong 511434 / CN
 [2024/43]
Representative(s)Metida
Gyneju str. 16
01109 Vilnius / LT
[N/P]
Former [2024/43]Zaboliene, Reda
Metida
Business center Vertas
Gyneju str. 16
01109 Vilnius / LT
Application number, filing date22906004.130.09.2022
[2024/43]
WO2022CN123033
Priority number, dateCN20211151720713.12.2021         Original published format: CN202111517207
[2024/43]
Filing languageZH
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO2023109252
Date:22.06.2023
Language:ZH
[2023/25]
Type: A1 Application with search report 
No.:EP4450316
Date:23.10.2024
Language:EN
[2024/43]
Search report(s)International search report - published on:CN22.06.2023
(Supplementary) European search report - dispatched on:EP20.10.2025
ClassificationIPC:B60L3/00, G01R31/00, B60L3/04, B60L3/12, G01R19/165
[2025/47]
CPC:
B60L3/00 (EP); B60L3/0023 (EP,CN); B60L3/0046 (EP);
B60L3/04 (EP); B60L3/12 (EP); G01R31/006 (EP);
B60L2250/10 (EP); G01R19/16576 (EP); G01R31/007 (EP);
Y02T10/70 (EP) (-)
Former IPC [2024/43]B60L3/00
Designated contracting statesAL,   AT,   BE,   BG,   CH,   CY,   CZ,   DE,   DK,   EE,   ES,   FI,   FR,   GB,   GR,   HR,   HU,   IE,   IS,   IT,   LI,   LT,   LU,   LV,   MC,   MK,   MT,   NL,   NO,   PL,   PT,   RO,   RS,   SE,   SI,   SK,   SM,   TR [2024/43]
TitleGerman:VERFAHREN UND VORRICHTUNG ZUR ERKENNUNG VON UNTERSPANNUNGSFEHLERN MIT HOCHSPANNUNGSEINGANG FÜR ELEKTROFAHRZEUG UND SPEICHERMEDIUM[2024/43]
English:HIGH-VOLTAGE INPUT UNDER-VOLTAGE FAULT DETECTION METHOD AND APPARATUS FOR ELECTRIC VEHICLE, AND STORAGE MEDIUM[2024/43]
French:PROCÉDÉ ET APPAREIL DE DÉTECTION DE DÉFAUT DE SOUS-TENSION D'ENTRÉE À HAUTE TENSION POUR VÉHICULE ÉLECTRIQUE, ET SUPPORT DE STOCKAGE[2024/43]
Entry into regional phase18.10.2023Translation filed 
18.10.2023National basic fee paid 
18.10.2023Search fee paid 
18.10.2023Designation fee(s) paid 
18.10.2023Examination fee paid 
Examination procedure18.10.2023Amendment by applicant (claims and/or description)
18.10.2023Examination requested  [2024/43]
Fees paidRenewal fee
31.03.2024Renewal fee patent year 03
26.08.2025Renewal fee patent year 04
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Documents cited:Search[XI] CN113125842  (BEIQI FOTON MOTOR CO LTD et al.) [X] 1-2,5,8-10 * paragraphs [0041] - [0061] - [00 2] - [0019]; figure 1 *[I] 3-4,6-7
 [I] US2014252849  (RAO BALAKRISHNA et al.) [I] 1-10 * paragraphs [0004] - [0010] - [0 46] - [0054]; figure 5 *
 [A] CN108583286  (ANHUI HUALING AUTOMOBILE CO et al.) [A] 1-10 * paragraphs [0009] - [0032]; figure 1 *
 [A] CN211320956  (LUOYANG POWER STORAGE AND TRANSF SYSTEM CO LTD et al.) [A] 1-10 * paragraphs [0030] - [0058]; figures 1-2 *
 [A] CN106965701  (SHENZHEN HANLU NEW ENERGY AUTOMOBILE CO LTD et al.) [A] 1-10 * the whole document *
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