HEV soft package battery cell and battery pack

Abstract

The invention provides an HEV soft package battery cell and a battery pack, the HEV soft package battery cell comprises a battery cell main body and a battery cell tab, the battery cell main body is provided with an aluminum-plastic film shell, and a pole group and an electrolyte which are sealed in the aluminum-plastic film shell, the battery cell tab is provided with a positive pole tab and a negative pole tab, one ends of the positive pole tab and the negative pole tab are positioned in the aluminum-plastic film shell and are connected with pole group, and other ends of the positive pole tab and the negative pole tab extend out of the aluminum-plastic film shell. The battery cell is characterized in that the battery cell main body is of a cuboid structure, the length L of the battery cell main body is smaller than or equal to 250 mm, the width W and the thickness H of the battery cell main body meet the conditions that 20%L <= W <= 60%, and 1%L <= H <= 5%L. According to the HEV softpackage battery cell, the high-rate charging and discharging capacity of the battery cell can be guaranteed, the power performance of the battery cell is guaranteed, the safety performance of the battery cell can also be improved, and the HEV soft package battery cell has good practicability.

Description

technical field [0001] The invention relates to the technical field of power batteries, in particular to an HEV soft-pack battery cell, and at the same time, the invention also relates to an HEV battery pack having the above-mentioned HEV soft-pack battery cell. Background technique [0002] HEV is the abbreviation of Hybrid Electric Vehicle, that is, a hybrid vehicle, which is a compromise between traditional fuel vehicles and pure electric vehicles. HEV uses the internal combustion engine of traditional vehicles and the motor (PMSM or asynchronous motor) of pure electric vehicles for hybrid drive. The motor is powered by HEV batteries. HEV can reduce the demand for fossil fuels, improve fuel economy, and achieve energy saving and emission reduction. and mitigation of the greenhouse effect. [0003] The performance, reliability, and safety requirements of HEV batteries are different from those of BEV (pure electric vehicles). BEV batteries generally have a higher charge, w...

AI Technical Summary

Problems solved by technology

[0005] However, the size of the existing soft-packed batteries is developed based on the standard dimensions of the VDA platform and the MEB platform, and the structural design uses tabs and multi-pole groups on the same side, which will not only affect the heat dissipation of the battery, but also affect safety. performance and reliability, and will also affect power performance. At the same time, it will also lead to low space utilization during battery pack assembly, resulting in increased costs

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