Novel power battery module and assembly process thereof

Abstract

The invention discloses a novel power battery module and an assembly process thereof. The novel power battery module comprises a module and a fixing bracket. The module comprises a plurality of battery core strings, and the battery core strings comprise a plurality of battery cores in interveined arrangement. The outer walls of adjacent battery cores of the core strings are connected to each other; the fixing bracket comprises insulating heat conducting plates at both ends of the module and fixing lugs on both sides of the width direction of the module, and the fixing lugs are respectively connected with the two insulating heat conducting plates. The sidewalls between two adjacent battery cores of the same battery core string are connected to increase the volumetric specific energy of themodule; heat at battery core lugs are transferred to the insulating heat conducting plates, the heat is taken away by an air cooling form, the temperature difference problem between the battery coresdue to the thermal aggregation effect between the battery cores can be reduced, and the consistency of the temperature of the battery cores can be improved. Compared with the prior art, the novel power battery module can improve volume specific energy and can solve the problem of the heat accumulation effect between the battery cores.

Description

technical field [0001] The invention relates to the field of battery technology, in particular to a novel power battery module and an assembly process thereof. Background technique [0002] The cells of the power battery module have different structures, such as cylindrical, rectangular, etc. Among them, cylindrical cells have the lowest group efficiency and the lowest space utilization. Cylindrical batteries are generally installed in the form of in-line or plug-in rows for module arrangement, and the heat dissipation methods of the modules include natural heat dissipation, forced air cooling, and liquid cooling. In the natural heat dissipation and forced air cooling methods, the distance between the cells is relatively large to facilitate heat dissipation; in the liquid cooling method, water cooling tubes need to be placed between the cells. [0003] For the group of cylindrical batteries in the form of straight rows, there is a heat dissipation space reserved between th...

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Problems solved by technology

[0006] (3) The gap between the cells is small, and a chain reaction will occur between the cells when the thermal runaway of a single cell occurs, which will lead to a decrease in the safety of the module;

[0007] (4) When using natural cooling or forced air cooling of the battery module, due to the large thermal resistance of the air, the temperature consistency between the batteries at different positions in the module is reduced, and the consistency of the module is reduced; liquid cooling is used When the battery module is installed, the liquid cooling pipeline increases the distance between the cells, which is not conducive to the improvement of the volume specific energy of the module, and at the same time increases the cost and increases the risk of liquid leakage

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