Title:
BATTERY PACK HEATING METHOD, MOTOR CONTROLLER, ELECTRIC VEHICLE, AND SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/284785
Kind Code:
A1
Abstract:
A battery pack heating method, a motor controller, an electric vehicle, and a system, capable of improving the heating efficiency of a battery pack (120). The motor controller (130) comprises a controller (132) and an inverter circuit (134), wherein the inverter circuit (134) is used for converting a direct current inputted by the battery pack (120) into an alternating current and transmitting the alternating current into a motor (110), and the motor (110) is a symmetric six-phase motor; and the controller (132) is used for controlling the inverter circuit (134) to input a current into the motor (110) when the motor (110) is stationary and the battery pack (120) needs to be heated, such that currents passing through each of the following three pairs of stator windings in the motor (110) are equal and in the same direction: an A1 phase winding and an A2 phase winding; a B1 phase winding and a B2 phase winding; and a C1 phase winding and a C2 phase winding.
Inventors:
WU CHAOQIANG (CN)
LIN MENGXUAN (CN)
SHI CHAOJIE (CN)
LIN MENGXUAN (CN)
SHI CHAOJIE (CN)
Application Number:
PCT/CN2022/105466
Publication Date:
January 19, 2023
Filing Date:
July 13, 2022
Export Citation:
Assignee:
HUAWEI DIGITAL POWER TECH CO LTD (CN)
International Classes:
H02P27/08; H01M10/615; H01M10/62; H01M10/625; H02P21/14; H02P21/20; H02P29/62; H02P29/64
Foreign References:
| CN112550077A | 2021-03-26 | |||
| CN113022326A | 2021-06-25 | |||
| CN112550022A | 2021-03-26 | |||
| CN112550079A | 2021-03-26 | |||
| CN112977094A | 2021-06-18 | |||
| CN113691193A | 2021-11-23 | |||
| JP2010272395A | 2010-12-02 | |||
| US20210061128A1 | 2021-03-04 |
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