A fireproof and anti-collision automotive lithium battery with high heat dissipation

Abstract

The invention discloses a high-efficiency heat-dissipating fireproof and anti-collision automobile lithium battery, which comprises a plurality of battery modules connected in parallel. The battery module includes a battery box. The top of the battery box is fixed with a box cover, and a gas diffusion mechanism is arranged on the box cover. , a battery base is installed in the battery box, battery installation slots are arranged and distributed on the battery base, a cover plate is provided on the top of the lithium battery, and high temperature resistant heat insulation cotton is arranged between two adjacent battery installation slots in the same row. There is a snake-shaped flexible isolation plate between the high-temperature-resistant insulation cotton in the row, and a temperature-sensing optical fiber is fixed on the flexible isolation plate. There are liquid nitrogen, air channels and cooling liquid channels in the flexible isolation plate. The lithium battery is cooled by diffusion under the action of the gas diffusion mechanism, and a pressure relief valve is fixed on the side of the battery box. The present invention solves the problems in the prior art that liquid nitrogen is used for cooling but the utilization rate is not high, and when the liquid nitrogen cooling is not triggered, the lithium battery cannot well solve the problem of heat dissipation and collision between lithium batteries.

Description

technical field [0001] The invention relates to the technical field of automobile lithium batteries, in particular to a high-efficiency heat dissipation fireproof and anti-collision automobile lithium battery. Background technique [0002] The high-temperature fire and collision fire caused by the heat dissipation of automobile lithium batteries are common safety accidents and safety hazards of electric vehicles. At present, there are no good measures for fire prevention of automobile batteries. If a single battery catches fire, the time is short and the fire is large. A problem with a single battery may soon cause the lithium batteries in the entire battery module to catch fire, causing the entire vehicle to catch fire and causing a lot of losses. [0003] Conventional fire extinguishing methods, such as sand covering, dry powder fire extinguisher, water gun fire extinguishing and foam fire extinguishing, etc., cannot solve the problem of lithium battery fire, because the c...

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Problems solved by technology

[0002] The high-temperature fire and collision fire caused by the heat dissipation of automobile lithium batteries are common safety accidents and safety hazards of electric vehicles. At present, there are no good measures for fire prevention of automobile batteries. A single cell battery catches fire, the time is short, the fire is large, and a single cell problem may soon cause the lithium batteries in the entire battery module to catch fire, causing the entire vehicle to catch fire and causing a lot of losses

[0003] Conventional fire extinguishing methods, such as sand covering, dry powder fire extinguisher, water gun fire extinguishing and foam fire extinguishing, etc., cannot solve the problem of lithium battery fire, because the chemical reaction inside the battery will not stop, and the packaging of the battery is well sealed. Conventional fire extinguishing and arson methods It can only temporarily suppress the fire after the electric vehicle battery catches fire, but it cannot fundamentally avoid and solve the problem. Although there are liquid nitrogen cooling measures at present, they are all used after a fire occurs, and when used The utilization efficiency of liquid nitrogen is not high. When the liquid nitrogen is not triggered to cool down, the lithium battery cannot solve the problem of heat dissipation and collision between lithium batteries.

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