Power battery pack installation assembly and working mode thereof

Abstract

The invention discloses a power battery pack installation assembly, which comprises an installation box, a battery pack, a pipeline and a battery pack fixing piece. The battery pack fixing piece is fixedly arranged in the installation box; the battery pack is fixed into the battery pack fixing piece and is communicated with the pipeline through the battery pack fixing piece. According to the powerbattery pack installation assembly provided by the invention, cooling liquid pipelines are uniformly paved in the device, and a phase-change material in a phase-change groove absorbs or releases heatso as to carry out heat conduction with a battery, and the phase-change material is used as an intermediate medium, so that a temperature variation range and a variation speed of the battery are reduced; meanwhile, the phase-change material wraps an outer layer of the battery, so that the battery absorbs and releases heat uniformly, and the problem that the service life of the battery is reduceddue to nonuniform heat dissipation of the battery and fast battery temperature variation speed is solved. According to the power battery pack installation assembly provided by the invention, through simultaneously using cooling liquid and heating liquid, the problem that the charging and discharging speed of the power battery is slow under a lower temperature environment is solved, and the servicelife of the power battery pack is prolonged.

Description

technical field [0001] The invention belongs to the technical field of new energy vehicles, and in particular relates to a power battery pack installation assembly and its working method. Background technique [0002] As the power source of electric vehicles or hybrid vehicles, it must have the characteristics of high output and large capacity. Therefore, it is necessary to connect multiple batteries together to form a battery pack. In order to reduce the volume of the battery pack and increase the energy density of the battery pack, install It is necessary to arrange the batteries compactly. [0003] The battery pack will generate a lot of heat when it is working, and the high temperature will have a great impact on the energy conversion efficiency of the battery. Therefore, it is necessary to discharge the heat generated by the battery pack in time. In cold weather and the battery pack is not working, The reduction of battery pack temperature will also reduce the energy c...

AI Technical Summary

Problems solved by technology

[0003] The battery pack will generate a lot of heat when it is working, and the high temperature will have a great impact on the energy conversion efficiency of the battery. Therefore, it is necessary to discharge the heat generated by the battery pack in time. In cold weather and the battery pack is not working, The reduction of battery pack temperature will also reduce the energy conversion efficiency. When the temperature drops to 0 degrees, the battery pack will even stop working. In order to solve these problems, the battery pack needs to be protected by cooling and heating. Since the cylindrical battery technology is more Mature, the consistency and symmetry of its products are more excellent, so the battery packs used in electric vehicles currently mainly use cylindrical batteries, but due to the structure of cylindrical batteries, when cooling them is often uneven, the part close to the cooling device The cooling speed is faster, and the cooling speed of the part away from the cooling is slower, which will reduce the service life of the battery pack. In order to solve this problem, the following technical solutions are now provided

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