A battery module with heating function

Abstract

The embodiment of the present invention discloses a battery module with a heating function, which relates to the technical field of batteries. The battery module includes a casing and a battery arranged inside the casing, the battery is provided with battery electrodes; the casing is provided with a heating chip, and the heating chip includes a base material and a battery located on the surface of the base material. A conductive layer, the conductive layer is provided with two conductive strips; the conductive layer is a metal oxide layer with a thickness of 5-900 nm, and the metal oxide layer contains ZnO x S (1‑x) , InO x S (1‑x) , Sn x In( 1‑x) O, Zn x Mg (1‑x) O, Zn x Al (1‑x) One or more of O, where 0<x<1; preferably, the metal oxide of the metal oxide layer is sputtered onto the surface of the substrate by a magnetron sputtering process; the shell is provided with an electrode plug holes, and the battery electrodes are inserted into the electrode jacks. The invention not only solves the disadvantages of low assembly efficiency, imprecise positioning of the battery cells, and low energy density of the battery module encountered in the installation process of the battery module, but also solves the problems of uneven heating of the battery module, slow heating speed and poor temperature control. Accuracy, large surface temperature difference and other shortcomings, effectively solve many technical problems in the industry.

Description

technical field [0001] The present invention relates to the technical field of batteries, in particular to a battery module with a heating function. Background technique [0002] The Chinese government vigorously encourages and supports the development of new energy vehicles. At present, my country's production and sales in the field of new energy vehicles rank first in the world, and have doubled year-on-year for several consecutive years, thus driving the development of my country's power lithium battery and battery module industry. develop. However, in winter in northern my country, the temperature is usually below 0 °C, the performance of lithium-ion power batteries will drop sharply in low temperature environments, and low temperatures directly affect the service life and safety of battery packs, especially the available capacity of the battery drops sharply, the so-called The phenomenon of "power failure" of new energy vehicles will greatly reduce the cruising range of ...

AI Technical Summary

Problems solved by technology

Patent CN111511051A discloses a structure for prolonging the service life of the flexible heating film. The uniformity of heating is improved by adding a heat-dissipating aluminum plate, but the aluminum plate is in direct contact with the battery without other protection measures, which may cause a short circuit of the battery

[0004] In summary, the existing battery module heating technology basically uses electric heating wire or PTC to heat, the heating speed is slow, the heating is uneven, and the energy consumption is large, which is easy to cause thermal runaway. Low, indirectly reduces the energy density of the module

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