Large-sized non-parallel lithium-ion battery module assembled structure

Abstract

The invention provides a large-sized non-parallel lithium-ion battery module assembled structure. The large-sized non-parallel lithium-ion battery module assembled structure comprises a box body, a plurality of lithium-ion battery cells, heat-conducting media, battery cell fixing frames, current collector fixing frames, module current collectors, assembly current collectors and insulating media, wherein the lithium-ion battery cells are stacked in the battery cell fixing frames in the box body and are fixed as battery cell assemblies; positive pole tabs and negative pole tabs of battery cellsof adjacent layers in the battery cell assemblies are connected in series to form cascaded structures, and the lithium-ion battery cells of adjacent layers are isolated by the heat-conducting media, and cascaded parts of positive and negative pole tabs of all the battery cells are connected by the module current collectors and are fixed as a whole; total positive poles and total negative poles ofbattery modules are lead out from initial ends and tail ends of tab cascaded structures through the assembly current collectors; the module current collectors and the assembly current collectors are limited in the current collector fixing frames. The large-sized non-parallel lithium-ion battery module assembled structure is convenient to assemble, has relatively small overall volume and lighter weight, has relatively high energy density and excellent heat resistance and impact resistance and is applicable to a variety of fields such as traffic and aviation.

Description

technical field [0001] The invention relates to the technical field of battery power sources, in particular to a large-scale non-parallel lithium-ion battery module assembly structure. Background technique [0002] Energy is the biggest problem and dilemma faced in the 21st century, and the sustainable development of energy is one of the important guarantees for the sustainable development of society and economy. As a representative of modern high-performance batteries, lithium-ion batteries have the advantages of high working voltage, large specific energy, stable discharge voltage, wide application temperature range, light environmental pollution, long storage and working life, etc., and have become the mainstream power supply of many electronic products. Not only that, in the field of large power sources such as electric vehicles and UPS, lithium-ion batteries have also received widespread attention. [0003] At present, the lithium-ion battery module is mainly to connec...

AI Technical Summary

Problems solved by technology

But this kind of battery module has many disadvantages. The parallel battery module has high requirements on the consistency of the battery cells. The overall battery module is affected by the performance of a single battery cell, and the parallel battery module is not suitable for existing application batteries. management system

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