The invention relates to a battery self-heating device and a vehicle, the device comprises a battery self-heating circuit and a controller, the battery self-heating circuit comprises a first battery pack, a second battery pack, a bridge arm and a winding corresponding to the bridge arm; the negative electrode of the first battery pack is connected with the positive electrode of the second battery pack, the negative electrode of the first battery pack and the positive electrode of the second battery pack are connected with the output end of the winding, and the input end of the winding is connected with the midpoint of the bridge arm; the positive electrode of the first battery pack is connected with the first confluence end of the bridge arm, and the negative electrode of the second battery pack is connected with the second confluence end of the bridge arm; and the controller is configured to adjust the duty ratio of the bridge arm according to a target duty ratio range in response to detecting that the battery self-heating circuit is in a working state, so that the fundamental frequency of the heating current of the battery self-heating circuit is changed within a target fundamental frequency range.
本公开涉及一种电池自加热装置和车辆,所述装置包括:电池自加热电路和控制器,所述电池自加热电路包括第一电池组、第二电池组、桥臂以及与所述桥臂对应的绕组;所述第一电池组的负极和所述第二电池组的正极连接,且所述第一电池组的负极和所述第二电池组的正极与所述绕组的输出端连接,所述绕组的输入端连接所述桥臂的中点;所述第一电池组的正极连接所述桥臂的第一汇流端,所述第二电池组的负极连接所述桥臂的第二汇流端;所述控制器,被配置为响应于检测到所述电池自加热电路处于工作状态,根据目标占空比范围调整所述桥臂的占空比,以使所述电池自加热电路的加热电流的基波频率在目标基波频率范围内变化。
Battery self-heating device and vehicle
电池自加热装置和车辆
2024-04-05
Patent
Electronic Resource
Chinese
IPC: | H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |