Battery and module

Abstract

The invention belongs to the technical field of lithium ion batteries, and particularly relates to a battery which comprises an aluminum shell, a positive plate, a negative plate and an electrolyte. The positive plate and the negative plate are mounted in the aluminum shell, the electrolyte is mounted in the aluminum shell, the aluminum shell comprises an outer shell and an inner shell which is arranged in the outer shell, and a liquid medicine cavity is formed between the outer shell and the inner shell; and a heat pipe is arranged outside the aluminum shell and connected with the liquid medicine cavity, and at least the upper section of the heat pipe is higher than a top cover. The invention also provides a module for installing the battery, an isolation cover is arranged at the top of the module shell, the upper section of the heat pipe is positioned in the isolation cover, and a cooling module matched with the isolation cover is arranged. The battery can guide and dissipate generated heat in a centralized manner, dangerous cases can be quickly controlled during thermal runaway, heat dissipation pressure in the module can be effectively reduced, the problem of unsmooth heat dissipation in the module can be avoided, the heat pipe can be isolated by the arranged isolation cover, and under the action of a cooling module, the cooling efficiency can be further improved.

Description

technical field [0001] The invention belongs to the technical field of aluminum shell lithium ion batteries, in particular to a battery and a module. Background technique [0002] For the existing aluminum shell battery, during use, the surface of the aluminum shell dissipates heat. In a module made of this battery, since the batteries are arranged side by side, when the heat is transferred to the aluminum shell, if the internal heat dissipation of the module is not timely, it will This leads to heat build-up, which increases the chance of thermal runaway of individual batteries. The accumulation of heat in the battery pack makes it difficult to dissipate heat, which often leads to thermal runaway of the battery or even a fire. In addition, traditional modules (or battery packs) can only conduct heat transfer through the natural heat conduction of the shell or the small contact surface. The heat conduction effect of this method is not good, and the temperature difference be...

AI Technical Summary

Problems solved by technology

Heat insulation and heat dissipation are a pair of contradictions, and it is difficult to optimize the performance of both

The battery pack cannot meet the requirements of sealing and waterproofing

When the battery is thermally out of control, it is easy to catch fire and burn, and it takes a certain time after the fire burns before personnel can intervene in the fire extinguishing operation

Due to the blockage of the shell, it is difficult for the refrigerant liquid to reach the inside of the battery, and the fire extinguishing effect is poor

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