A lithium battery pack with protection function and its home energy storage system

Abstract

The invention relates to the field of new energy technology, and discloses a lithium battery pack with a protective function and its home energy storage system, including an outer casing, and the fire extinguishing device includes a first partition, a gas storage block, a main pipe, and a branch pipe and the connection assembly, the inside of the outer casing is fixedly connected with a first partition, and the side of the first partition away from the center of the outer casing is provided with a gas storage block, and the interior of the gas storage block is filled with carbon dioxide gas, The upper and lower sides of the gas storage block are connected with a main pipe, and the main pipe is fixedly connected with evenly distributed branch pipes. After the lithium battery pack with protection function is melted and burnt by flame and high temperature through the rubber cover, carbon dioxide gas flows into the branch pipe through the main pipe under the action of pressure and is ejected from the spherical shell to the outside, thereby realizing the protection against fire. It can automatically and evenly extinguish the fire, so as to achieve the effect of reducing the damage of the equipment, and then solve the problems that the fire cannot be extinguished in time, the equipment is seriously damaged and the safety is not high.

Description

technical field [0001] The invention relates to the technical field of new energy, in particular to a protective lithium battery pack and a household energy storage system thereof. Background technique [0002] With the continuous development of science and technology, the pace of new energy development is accelerating. Lithium batteries are the top priority of new energy development. Nowadays, lithium battery packs are physically composed of battery packs, BMS, shell structural parts, and high-voltage modules. At the same time, it is composed of power indicator board, power connector, DC-DC power supply, fan, wiring harness and other auxiliary materials. [0003] The existing lithium battery packs mainly have the following technical defects: First, the traditional lithium battery packs are not equipped with fire extinguishing protection devices, which will lead to spontaneous combustion of lithium battery packs or flames caused by external factors, which need to be manually...

AI Technical Summary

Problems solved by technology

[0003] The existing lithium battery packs mainly have the following technical defects: First, the traditional lithium battery packs are not equipped with fire extinguishing protection devices, which will lead to spontaneous combustion of lithium battery packs or flames caused by external factors, which need to be manually extinguished by manual discovery, thereby Causes the problems of being unable to extinguish the fire in time, serious equipment damage and low safety; second, if the fire can be automatically detected and carbon dioxide gas is used for fire extinguishing operations, since the lithium battery pack is provided with ventilation holes for heat dissipation, but if the fire If the fire occurs, the fire will be fueled due to ventilation, which will cause the problem that the fire is difficult to extinguish

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