Electric vehicle and battery module thereof

Abstract

The invention relates to the technical field of power batteries, and particularly provides an electric vehicle and a battery module thereof. The electric vehicle comprises a vehicle frame and a battery module arranged on the vehicle frame. The battery module comprises a liquid cooling plate and a battery cell arranged on the liquid cooling plate, and the battery cell and the liquid cooling plate are bonded and fixed. A structural adhesive for bonding the liquid cooling plate and the battery cell is arranged between the liquid cooling plate and the battery cell, and a heat conduction material in contact with the liquid cooling plate and the battery cell to conduct heat is arranged between the liquid cooling plate and the battery cell. The structural adhesive is arranged between the liquid cooling plate and the battery cell. The structural adhesive has high connection strength and stronger adhesion than a heat conduction adhesive, and can stably connect the battery cell to the liquid cooling plate. The heat conduction material is arranged between the liquid cooling plate and the battery cell. According to the invention, the structural adhesive is used, so that the connection strengthcan be ensured; the heat conduction function of the heat conduction adhesive can be realized by the heat conduction material; and the connection strength of the battery cells in the battery module isimproved.

Description

technical field [0001] The invention relates to the technical field of power batteries, in particular to an electric vehicle and a battery module thereof. Background technique [0002] With the continuous advancement of power battery technology, the application of power battery systems in the automotive field is becoming more and more extensive. At the same time, with the development of technology, electric vehicles have higher and higher performance requirements for power battery systems. During high-rate charging and driving of electric vehicles, the heating of the battery cell as a single battery will cause the temperature of the battery cell and the battery box to continue to rise, causing the charging alarm / current limiting of the power system, which will make the charging time longer , The output power is reduced, and the heating of the battery cell causes the temperature of the battery and battery module to be too high, which shortens the life of the power system. T...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a battery module, which can solve the problem of low connection strength of the battery module in the prior art; in addition, the purpose of the present invention is to provide an electric vehicle using the battery module, which can ensure that the battery The connection stability of the module ensures the driving stability of the electric vehicle

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