Soft package non-modular power battery system

Abstract

The invention discloses a soft package non-modular power battery system which comprises an upper cover and a lower box body assembly which are fixedly connected, and a battery management system, a pressing rod assembly, a low-voltage wiring harness, a soft package battery cell assembly, a high-voltage assembly, a cross beam assembly and a liquid cooling system are sequentially arranged between theupper cover and the lower box body assembly from top to bottom. According to the technical scheme, a modular structure is avoided, soft package battery cells are directly integrated into the batterybox, the process of integrating the battery cells into a module is omitted, the assembly error caused by intermediate integration of the module is omitted, the process is simplified, and the cost is reduced; the system is non-modular, materials such as a module shell, a module end plate and a heat conduction structural adhesive are omitted, the weight is obviously reduced, the cost is obviously reduced, a heat exchange path is changed into a battery cell, heat conduction structural adhesive and liquid cooling pipe, the heat transfer path is shortened, and the efficiency is improved.

Description

technical field [0001] The invention relates to the field of power batteries, in particular to a soft package and non-modularized power battery system. Background technique [0002] Soft-pack batteries refer to lithium batteries whose shells are made of soft packaging materials, usually aluminum-plastic composite films. They have obvious advantages such as large capacity, low internal resistance, flexible design, high safety, and light weight. The application in the field of power batteries is accelerating. According to some data, soft-pack batteries have won the favor of the majority of power battery manufacturers due to their good safety performance, light weight, and flexible design. Therefore, soft-pack batteries are used more and more in new energy vehicles and energy storage. The structure of the existing soft-pack power battery system is generally from the cell level to the module level, from the module level to the battery box structure, and the soft-pack power batt...

AI Technical Summary

Problems solved by technology

[0009] This invention mainly solves the technical problems of the original battery pack, which are heavy in weight, not compact enough in design and has potential safety hazards, and provides a soft pack without modular power battery system , no modular structure, the soft-packed battery cells are directly integrated into the battery box, saving the process of integrating the battery cells into a module, eliminating the assembly error caused by the intermediate integration of the module, simplifying the process and reducing the cost; no module It saves materials such as module shell, module end plate, thermal conductive structural adhesive, etc., which significantly reduces the weight and cost. The heat exchange path is changed to battery core-thermal conductive structural adhesive-liquid cooling tube, and the heat transfer path is shortened. Efficiency improve

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