Contemporary Amperex Technology Co., Ltd.

Ruobo You

Xiaoteng Huang

Yanlong Gu

Qing Li

Zhijun Qiu

Qiquan Wu

Sha Zhou

The present disclosure provides a battery heat exchange system which comprises a liquid feeding mechanism, a heat exchange mechanism and a liquid draining mechanism. The liquid feeding mechanism provides a circulating liquid. The heat exchange mechanism is connected with the liquid feeding mechanism and comprises a plurality of heat exchange units and a plurality of connecting units; each heat exchange unit is used to heat or cool a corresponding battery module, and the plurality of connecting units are used to connect the heat exchange units together in series-parallel. The liquid draining mechanism is connected with the heat exchange mechanism, and the circulating liquid provided by the liquid feeding mechanism flows through the heat exchange mechanism and then is drained from the liquid draining mechanism.

Battery heat exchange system

The present application relates to a heating control method and a heating control device for a battery structure, and a battery system. The heating control method includes steps of: S, detecting a temperature value T of the battery structure; S, judging whether the temperature value T meets a first heating condition, if yes, going to step S; S, controlling a positive electrode terminal to be connected with a negative electrode terminal to form short circuit, so as to heat the battery structure using heat generated by a short circuit current. When the first condition is met, the positive and negative terminals are connected to form short circuit, the heat generated by the short circuit current rapidly dissipates in the battery structure, so that the battery structure can be heated rapidly, which decreases the difference between internal and external temperature of the battery structure when adopting conventional heat conduction method.

Heating control method and heating control device for battery structure, and battery system

The present disclosure provides a battery unit, a battery module and a battery pack. A battery pack comprises: at least one battery module; and a heating film sheet directly or indirectly heating the at least one battery module. The heating film sheet comprises a heating core and two insulating films. The heating core generates heat when the heating core is electrified, and has: a wire connection region for electrically connecting with external wires; and a heating region electrically connecting with the wire connection region, rated heating powers of different parts of the heating region are different so as to meet demand for heat of each battery module in each of different regions of the at least one battery module when the at least one battery module is heated. The two insulating films respectively cover two sides of the heating core. In the battery pack, each battery module is heated by the heating film sheet, and the rated heating powers of the different parts of the heating region of the heating core are different, so the heat provided for each battery module in the different region of the battery pack can be determined according to the demand for heat of each battery module in the different region of the battery pack, and in turn it ensures that each battery module of the battery pack is heated uniformly by the heating film sheet.

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Ningde, China

Ruobo You