Battery module and heat dissipation device thereof

Abstract

The invention discloses a battery module and a heat dissipation device thereof. The battery module comprises a protective shell and a battery module, and the battery module is arranged in the protective shell. Fixing seats are symmetrically arranged at the front end and the rear end of the battery module, and a plurality of uniformly distributed cooling fins are arranged at the front ends of the fixing seats. The front end and the rear end of the protective shell are designed to be hollow, and the cooling fins penetrate through the protective shell. A plurality of uniformly distributed top heat dissipation openings are formed in the top end of the protective shell, the top heat dissipation openings comprise heat dissipation openings, and waterproof convex strips are arranged at the right ends of the heat dissipation openings. The fixing seats and the cooling fins are integrally formed by a copper-aluminum alloy material, the heat-conducting property of the copper-aluminum alloy material is excellent, the front end and the rear end with the most obvious heating of the battery module are directly fixed through the fixing seats, and heat-conducting silicone grease is arranged at the contact positions, so that the heat-conducting property of the device is greatly improved, the working temperature of the battery module is reduced, and the service life of the battery module is prolonged.

Description

technical field [0001] The invention relates to the technical field of battery equipment, in particular to a battery module and a heat dissipation device thereof. Background technique [0002] The battery will generate a certain amount of heat in the process of charging and discharging, especially in the process of charging and discharging with high current, a large amount of heat will be generated inside the battery, and a large amount of accumulated heat will generate a serious temperature gradient inside the battery, affecting the internal current of the battery The distribution of the battery leads to the inconsistency of the internal attenuation of the battery, which seriously affects the service life of the battery. Therefore, setting up a battery cooling device is of great significance to the long-term use of the battery. [0003] In order to prevent the temperature of the battery from being too high during charging and discharging, the battery is often used with a he...

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Problems solved by technology

[0002] The battery will generate a certain amount of heat in the process of charging and discharging, especially in the process of charging and discharging with high current, a large amount of heat will be generated inside the battery, and a large amount of accumulated heat will generate a serious temperature gradient inside the battery, affecting the internal current of the battery The distribution of the battery leads to the inconsistency of the internal attenuation of the battery, which seriously affects the service life of the battery. Therefore, setting up a battery cooling device is of great significance to the long-term use of the battery.

[0003] In order to prevent the temperature of the battery from being too high during charging and discharging, the battery is often used with a heat sink. The current common heat dissipation method is to install the heat sink on the protective shell of the battery module. However, in order to prevent rainwater and other sundries from directly contacting the battery, the protection The shell is often closed, which makes it difficult for the internal heat to pass through quickly. The heat transfer efficiency is low when it is close to the heat sink. Long-term use will still cause problems such as battery heating, and the actual heat dissipation effect is poor.

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