Battery compartment structure with dual functions of heat dissipation, heat preservation, energy absorption and vibration reduction

Abstract

The invention belongs to the field of new energy, and particularly relates to a heat dissipation, heat preservation, energy absorption and vibration reduction dual-function battery compartment structure. The structure comprises a bottom plate and a top plate; the left sides and the right sides of the bottom plate and the top plate are connected through side plates, the front sides and the rear sides are connected through a front plate and a rear plate respectively, and a cavity used for containing a lithium battery pack is jointly formed; the bottom plate and the top plate are each provided with an air channel penetrating front and back, and the front end and the rear end of each air channel are each provided with a sliding mechanism. Through-hole foamed aluminum is used as a filling material, closing and opening of the battery compartment sliding plate are achieved through the intelligent temperature control system so as to control the heat preservation and heat dissipation functions of the battery compartment, meanwhile, the foamed aluminum material and the shell steel plate structure form an interlayer structure, and vibration energy generated by different road conditions can be absorbed; therefore, the excessive dependence of the energy storage characteristic of the lithium battery on the temperature can be eliminated, the requirements of new energy automobiles on the structure of the battery compartment device in high-cold and high-heat areas with large temperature difference in four seasons are met, and safety threats caused by vibration of the lithium battery are avoided.

Description

technical field [0001] The invention belongs to the field of new energy, and in particular relates to a dual-function battery compartment structure of heat dissipation, heat preservation, energy absorption and vibration reduction. Background technique [0002] For new energy vehicles, because lithium-ion power batteries are widely used as their power systems, in order to obtain sufficient voltage and battery capacity to achieve sufficient driving power and cruising range, usually hundreds of batteries are connected in series and parallel. Integrate a large battery module. However, the power lithium-ion battery generates a lot of heat due to reaction heat, ohmic heat and polarization heat during charging and discharging, and its performance is greatly affected by temperature. In high temperature conditions and high rate charging and discharging, it is easy to cause battery overheating and The phenomenon of temperature inconsistency will cause the capacity and power attenuati...

AI Technical Summary

Problems solved by technology

At present, the ordinary battery compartment has the following characteristics: ①Simple structure, compact battery installation, which is not conducive to heat dissipation; ②Good heat dissipation at the bottom, but the strength protection of the battery is reduced; ③The side wall of the battery compartment is completely closed, which is not conducive to heat dissipation; ④Battery compartment The walls only have ribs and thin slabs, and the impact energy absorption is insufficient

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