Battery module with heating assembly

Abstract

The invention belongs to the technical field of batteries, and discloses a battery module with a heating assembly, which comprises a heating assembly and a plurality of battery monomers. Wherein the plurality of single batteries are sequentially arranged to form a battery pack, and the battery pack is provided with a first end face and a second end face in the length direction. The heating assembly comprises a main heating core body, an end face heating core body and a wire. The main heating core bodies are arranged on the two sides of the battery pack, the end face heating core body is arranged on the first end face, the wire is provided with a positive electrode end and a negative electrode end, and the wire, the main heating core bodies and the end face heating core body are connected to form a rectangular frame and connected in series to form a closed loop. Under the condition that the heating assembly meets the heating effect, the space size in the side face direction of the battery module is reduced, the overall structure of the battery module is more compact, and the volume energy density of the battery pack is improved.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a battery module with a heating assembly. Background technique [0002] With the vigorous development of new energy vehicles, users' requirements for the performance of battery packs are also increasing. The temperature of the environment in which the battery pack is used will affect the charge and discharge performance of the battery pack. In order to increase the mileage of the car in a low temperature environment, it is usually necessary to heat the battery pack to improve the charge and discharge capacity of the battery pack in a low temperature environment. [0003] In the prior art, in order to increase the charging and discharging capability of the battery pack in a low temperature environment, it is most common to use a heating film to heat the battery pack. The heating film is generally installed on both sides of the battery module or between adjacent battery cells. T...

AI Technical Summary

Problems solved by technology

Due to its own structural characteristics, the heating film usually needs to lead out wires on its body, and the thickness of the wire outlet is usually not less than 3.36mm, resulting in the battery module being installed on both sides of the heating film, resulting in its lateral direction. The space size is increased by at least 6.72mm. Although this method can heat the battery pack in a low-temperature environment, it reduces the volumetric energy density of the battery pack.

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