BATTERY SELF-HEATING CONTROL SYSTEM AND CONTROL METHOD, AND ELECTRIC TRANSPORTATION MEANS

WIPO Patent Application WO/2024/045655

A1

A battery self-heating control system and control method, and an electric transportation means. The control system comprises: a battery pack (10), a winding (20), a first switch assembly (30), a second switch assembly (40), a capacitor (50) and a controller, wherein the battery pack (10) comprises a first battery group (11) and a second battery group (12), which are connected in series, a connection line is led out between the first battery group (11) and the second battery group (12), and the connection line is connected to one end of the winding (20); the first switch assembly (30) and the second switch assembly (40) are connected in series, the first switch assembly (30) is electrically connected to a positive electrode of the first battery group (11) and a first end of the capacitor (50), and the second switch assembly (40) is electrically connected to a negative electrode of the second battery group (12) and a second end of the capacitor (50); the first end and the second end of the capacitor (50) are used for connecting to a load (100); a midpoint between the first switch assembly (30) and the second switch assembly (40) is connected to the other end of the winding (20); and the controller is electrically connected to the first switch assembly (30) and the second switch assembly (40), so that the battery pack (10) can generate heat.

YAN LEI (CN)
GAO WEN (CN)
ZHANG JUNWEI (CN)
SONG GAN (CN)

PCT/CN2023/090524

March 07, 2024

April 25, 2023

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BYD CO LTD (CN)

B60L58/27; H02J7/00

CN217074099U	2022-07-29
US6882061B1	2005-04-19
US5990661A	1999-11-23
JP2009142069A	2009-06-25
DE102010001422A1	2011-08-04

ZHIFAN & PARTNERS (CN)

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