A square cell module

Abstract

The invention relates to the technical field of power batteries, and provides a square cell module, comprising a module frame and a plurality of cells arranged in the module frame, wherein the moduleframe is a hollow frame structure, and a cell fixing device and a cell monitoring heating device are arranged in the module frame; The battery cell fixing device comprises a battery cell supporting seat and a battery cell connecting seat. The battery cell supporting seat is provided with a plurality of supporting seat separators. The battery cell connecting seat is correspondingly provided with aplurality of connecting seat separators. The above of the battery cell connecting seat is press-fitted with a battery cell pressing part. The cell monitoring and heating device comprises a bottom heating film of the cell, a side heating film of the cell symmetrically arranged and a signal acquisition terminal, wherein the electrodes of each cell are electrically connected with each other through an electric connection plate, the signal acquisition terminal is fixed on the electric connection plate, and a module end cover is arranged on the upper surface of the electric connection plate and thecell connection seat. The square cell module has the advantages of simple structure, good heating and heat dissipation performance, low manufacturing cost and high energy density.

Description

technical field [0001] The invention belongs to the technical field of power batteries, and in particular relates to a square battery cell module. Background technique [0002] In the context of the energy crisis, the use of environmentally friendly energy is an inevitable choice for people's production and life. Lithium batteries have the characteristics of high safety, good cycle performance, no pollution, and relatively low cost of raw materials, and have been widely used in electric vehicles. Lithium batteries are widely used in today's power battery systems, and are widely used in passenger cars, commercial vehicles, logistics vehicles, etc. With the continuous improvement of the demand for lithium batteries in today's market and the continuous development of lithium battery technology, problems such as modularization of lithium batteries in groups, small size, high energy density, and use under low temperature conditions need to be solved urgently. [0003] The struc...

AI Technical Summary

Problems solved by technology

[0004] At present, in the heat dissipation of the existing battery modules, due to the filling between the cells and the cells with the gasket material, there is no gap between the cells and the cell bracket and the battery box for air circulation, or it is difficult to achieve The large heat dissipation surface in the upper and lower directions of the battery cell realizes heat dissipation, which will lead to poor heat dissipation of some cells, which will lead to uneven temperature of the battery cells. Further, the uneven temperature of the battery cells in the module will cause the pressure difference of the entire battery module to be too large, thereby reducing the overall temperature. Battery life

[0005] At present, for the low-temperature use of batteries, the current solutions have low efficiency, uneven heating, easy ignition, high energy consumption, and high cost.

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