Square cell packing module

Abstract

The invention relates to the field of a battery pack group, and concretely relates to a square cell packing module. The square cell packing module comprises two fixed supports arranged at two ends, the end supports are respectively arranged in the fixed supports, several intermediate supports are arranged between two end supports; a square electrical core is respectively fixed between the intermediate support and the end support, a heat-conduction silica gel sheet is applied at one side of the square electrical core, a cover plate is arranged outside the square electrical core, the square cell packing module also comprises a heat radiation apparatus, the heat radiation apparatus comprises several uniformly arranged U-shaped heat pipes and the heat-storage aluminium plates; the U-shaped heat pipes are connected with the heat-storage aluminium plates; a hot end of the U-shaped heat pipe is inserted into the heat radiation through holes of the end support and the intermediate support bottom, and the heat-storage aluminium plates and the fixed support are connected. According to the invention, a heat pipe cooling technology is employed, the heat-conduction silica gel sheet is applied on one side of the electrical core, the combined-type heat radiation mode is employed, during the charge and discharge processes, high heat at an intermediate area is transmitted to peripheral edges, and the heat radiation uniformity of the cell pack temperature is increased.

Description

technical field [0001] The invention relates to the field of power battery packs, and more specifically, to a grouping module of a square battery. Background technique [0002] Due to the increasingly serious environmental pollution, new energy vehicles, as a kind of high-efficiency, clean and low-pollution characteristics, have achieved leap-forward development at home and abroad. As representatives of new energy vehicles, hybrid electric vehicles and electric vehicles have gradually developed and have been recognized by consumers and supported by the government. The power battery module is the main source of power for new energy vehicles, and it is also the main component and key technology of electric vehicles. [0003] When the vehicle is running under different driving conditions such as high speed, low speed, acceleration, deceleration, etc., the battery will be discharged at different rates, and a large amount of heat will be generated at different heat generation ra...

AI Technical Summary

Problems solved by technology

[0003] When the vehicle is running under different driving conditions such as high speed, low speed, acceleration, deceleration, etc., the battery will be discharged at different rates, and a large amount of heat will be generated at different heat generation rates. In addition to time accumulation and spatial influence, uneven heat accumulation will occur , resulting in complex and changeable operating environment temperature of the battery pack

Due to the dense arrangement of heating battery bodies, the central area will inevitably accumulate more heat, and the edge area will be smaller, which increases the temperature imbalance between the units of the battery pack, and aggravates the inconsistency of the internal resistance and capacity of each battery module and single cell.

If it accumulates for a long time, it will cause some batteries to be overcharged and overdischarged, which will affect the life and performance of the battery and cause hidden dangers.

If the electric vehicle battery pack does not get heat dissipation at high temperature, it will lead to excessive temperature or uneven temperature distribution of the battery pack system, which will eventually reduce the battery charge and discharge cycle efficiency, affect the power and energy of the battery, and in severe cases will lead to Thermal runaway affects battery safety and reliability

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