Wind cooling heat radiation structure of power battery pack

Abstract

The invention provides a wind cooling heat radiation structure of a power battery pack. The heat radiation structure comprises a box body, an air inlet flow passage and an air outlet flow passage, wherein the box body is used for accommodating a power battery pack; the air inlet flow passage and the air outlet flow passage are communicated with the box body and are respectively arranged on the twoopposite side surfaces of the box body; the bottom surface of the box body is a flow guide plate; the top surface of the box body is a current collecting plate; the flow guide plate and the bottom plate of the air inlet flow passage are positioned on the same plane; the current collecting plate and the top plate of the air outlet flow passage are positioned on the same plane; a flow division sheet is arranged at one side, near the box body, of the current collecting plate and/or the flow guide plate; the flow division sheet is inclined in the fluid flowing direction; the included angle between the flow division sheet and the current collecting plate and/or the flow guide plate is greater than 0 degrees but smaller than 90 degrees. The wind cooling heat radiation structure of the power battery pack is simple and reasonable; the heat radiation problem of the battery in the parallel ventilation mode can be improved at the stable state, so that the distribution of the air fluid inside thebox body provided with the power battery pack is uniform.

Description

technical field [0001] The invention relates to heat dissipation technology, in particular to an air-cooled heat dissipation structure of a power battery pack. Background technique [0002] With the continuous deepening of research on electric vehicles, the requirements for equipment equipped with electric vehicles are getting higher and higher, and the design of power batteries for electric vehicles is one of its key technologies. When the electric vehicle is working, the temperature of the power battery will gradually rise. If no timely thermal protection or heat dissipation design is adopted, the temperature of the battery will exceed its working range, which will reduce the performance of the vehicle. In severe cases, fire or explosion may occur. Therefore, it is very important to effectively control the temperature of the power battery pack. [0003] The heat dissipation methods currently used by power batteries mainly include: air cooling (air cooling or air cooling),...

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to propose an air-cooled heat dissipation structure of a power battery pack, which has a simple air-cooled heat dissipation structure, in view of the problem that the fluid distribution is uneven and the cooling effect needs to be improved in the existing parallel air-cooled heat dissipation method Reasonable, can improve the heat dissipation problem of the battery under the parallel ventilation mode in a relatively stable state, so that the air fluid distribution inside the box with the power battery pack is uniform, strengthen the heat dissipation of the power battery, reduce the temperature difference of the battery pack, and the temperature distribution is uniform to meet different types of battery pack structures

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