US 12,325,329 B2
Battery system with adjustable heating rate and control method thereof
Ningning Wu, Beijing (CN); Yongzhi Mao, Beijing (CN); and Changxin Guo, Beijing (CN)
Assigned to RISESUN MENGGULI NEW ENERGY SCIENCE & TECHNOLOGY CO., LTD, Beijing (CN)
Appl. No. 16/754,873
Filed by RISESUN MENGGULI NEW ENERGY SCIENCE & TECHNOLOGY CO., LTD, Beijing (CN)
PCT Filed Dec. 5, 2018, PCT No. PCT/CN2018/119302
§ 371(c)(1), (2) Date Jun. 9, 2021,
PCT Pub. No. WO2020/107507, PCT Pub. Date Jun. 4, 2020.
Claims priority of application No. 201811424616.6 (CN), filed on Nov. 27, 2018.
Prior Publication US 2021/0323442 A1, Oct. 21, 2021
Int. Cl. B60L 58/27 (2019.01); B60L 1/02 (2006.01); B60L 3/00 (2019.01); B60L 3/12 (2006.01)
CPC B60L 58/27 (2019.02) [B60L 1/02 (2013.01); B60L 3/0046 (2013.01); B60L 3/0084 (2013.01); B60L 3/12 (2013.01); B60L 2240/545 (2013.01); B60L 2240/547 (2013.01); B60L 2240/549 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A battery system with adjustable heating rate, characterized in that, the battery system comprises a battery pack, a heating plate, a power control module, and a battery management system;
wherein, the battery pack is electrically connected to the heating plate and the power control module, respectively; the power control module is electrically connected to the battery pack, the heating plate, and the battery management system, respectively;
when the temperature of the battery pack is lower than the preset self-heating switch-on temperature, the power control module is turned on, and the battery management system transmits the collected status information of the battery pack to the power control module, the power control module adjusting the current on-off time and switching frequency of the heating plate through a PWM signal to adjust the heating power and heating rate; when the temperature of the battery pack reaches the preset self-heating switch-off temperature, the power control module is turned off to stop heating;
wherein, the power control module further includes a current adjustment module, a current acquisition module, and a heating control module;
wherein the heating control module is electrically connected with the current acquisition module, the current adjustment module and the battery management system, and the heating control module performs information interaction with the battery management system, the heating control module sends a current adjustment command to the current adjustment module, and the heating control module reads the heating current collected by the current acquisition module to implement closed-loop control; and
wherein the current adjustment module comprises a switching electronic component, an isolated driving unit, and an isolated power source, and the current on-off time of heating is controlled by a PWM signal, the switching electronic component is any one of IGBT, MOSFET, thyristor or relay.