Flame-retardant battery box and flame-retardant power battery system

Abstract

The invention relates to a flame retardant battery box and a flame retardant power battery system. The flame retardant power battery system is divided into a plurality of independent battery modules, the independent battery modules are placed in the gas seal bodies of battery boxes, the battery boxes are serially connected through gas inlets and gas outlets arranged on the box bodies, a flame retardant gas is introduced into each of the battery boxes to reduce the content of oxygen in each of the battery boxes in order to realize the flame retardation and explosion prevention of the power battery system. The flame retardant battery box includes the gas seal battery box body, the box body is provided with one gas inlet and one gas outlet, and the gas inlet is used for introducing a combustion supporting gas; and the box body is also provided with a power interface and a control interface, and a detection unit is arranged in the box body to detect the oxygen concentration. The flame retardant battery box and the flame retardant power battery system can greatly improve the maneuverability of the power battery system, reduce lines and control components and reduce the cost.

Description

technical field [0001] The invention relates to the power battery part in the field of new energy vehicles, in particular to a power battery module for gas protection in a power battery system. Background technique [0002] With the gradual development of new energy vehicles, users have higher and higher requirements for the safety performance of new energy vehicles. Looking at the application and promotion of new energy vehicles at home and abroad, the safety performance of the power battery system has become a technical bottleneck affecting the safety performance of the vehicle. [0003] Due to its special physical and chemical characteristics, the power battery system may cause dangerous situations such as combustion and explosion of the power battery system under extreme conditions (such as collision, high temperature, low temperature, etc.). It has become a major technical research point in the industry to solve the combustion and explosion that may occur in the power ...

AI Technical Summary

Problems solved by technology

[0009] The invention provides a flame-retardant battery box and a flame-retardant power battery system, aiming at solving the potential thermal runaway problem of the power battery system in the field of new energy vehicles, and improving the power battery system with many control devices, complicated circuits, heavy weight, liquid Issues with leaks, corroded battery packs and higher costs

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