Title:
BATTERY SELF-HEATING CONTROL METHOD AND SYSTEM, AND ELECTRIC VEHICLE
Document Type and Number:
WIPO Patent Application WO/2023/207483
Kind Code:
A1
Abstract:
A battery self-heating control method and system, and an electric vehicle. The control method comprises: within a first preset time period in at least part of a control cycle in which drive control is performed on an electric motor, controlling a turned-on state of an upper bridge arm assembly and a lower bridge arm assembly to be a self-heating state, wherein in the self-heating state, there is an alternating current on a connecting line between the electric motor and a battery pack, such that a first battery group and/or a second battery group perform(s) charging and discharging alternately, thereby heating the battery pack.
Inventors:
LING HEPING (CN)
YAN LEI (CN)
GAO WEN (CN)
XIE JINYUE (CN)
ZHU KE (CN)
YAN LEI (CN)
GAO WEN (CN)
XIE JINYUE (CN)
ZHU KE (CN)
Application Number:
PCT/CN2023/084535
Publication Date:
November 02, 2023
Filing Date:
March 28, 2023
Export Citation:
Assignee:
BYD CO LTD (CN)
International Classes:
H01M10/615; B60K1/00; B60L58/27; H01M10/625; H01M10/637; H02J7/00
Foreign References:
| CN114566740A | 2022-05-31 | |||
| CN114889494A | 2022-08-12 | |||
| CN105762434A | 2016-07-13 | |||
| CN105932363A | 2016-09-07 | |||
| CN110116653A | 2019-08-13 |
Other References:
SHANG, YUNLONG ET AL.: "An Automotive Onboard AC Heater without External Power Supplies for Lithium-Ion Batteries at Low Temperatures", IEEE TRANSACTIONS ON POWER ELECTRONICS, vol. 33, no. 9, 1 November 2017 (2017-11-01), pages 7759 - 7769, XP011686196, ISSN: 0885-8993, DOI: 10.1109/TPEL.2017.2768661
Attorney, Agent or Firm:
INNOTRACK INTELLECTUAL PROPERTY LAW FIRM (CN)
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