Power battery pack

Abstract

The invention provides a power battery pack, which comprises a box body, a BMU and an installation plate, wherein L-shaped support plates are arranged at two sides of the BMU; an opening is formed in one side surface of the box body; the installation plate is arranged at the outer side of the box body and covers the opening; one end of the installation plate is hinged with the box body and the other end is detachably connected with the box body; a sliding seat is arranged at the inner side of the installation plate and is provided with a sliding chute; the BMU can slide inside through the L-shaped support plates from one end of the sliding chute; and the BMU can enter or penetrate through the opening along with rotation of the installation plate. Excessive bolts do not need to be fastened or removed by the BMU in the power battery pack in the installation and removal processes, so that the production efficiency can be greatly improved and the power battery pack is simple in structure and easy to operate.

Description

technical field [0001] The invention relates to the field of electric vehicles, in particular to a power battery pack. Background technique [0002] At present, the global automobile industry is facing the huge challenge of energy and environmental issues; pure electric vehicles with high energy utilization rate and no pollution to the environment are increasingly becoming the development direction of the future automobile industry. China is currently in the period of vehicle energy conversion, and new energy vehicles are increasing day by day. In major enterprises, the production efficiency of battery modules and power battery packs in new energy vehicles determines the level of production efficiency, and Most of the existing power battery packs have two or three layers, and each layer is equipped with a BMU (battery management unit) in the box. When it is necessary to install or repair the BMU, especially the middle and lower layers, due to It will be very troublesome to ...

AI Technical Summary

Problems solved by technology

China is currently in the period of vehicle energy conversion, and new energy vehicles are increasing day by day. In major enterprises, the production efficiency of battery modules and power battery packs in new energy vehicles determines the level of production efficiency, and Most of the existing power battery packs have two or three layers, and each layer is equipped with a BMU (battery management unit) in the box. When it is necessary to install or repair the BMU, especially the middle and lower layers, due to It will be very troublesome to disassemble the entire cabinet and then remove the BMU. The existing method is to provide a BMU entrance and exit at the front of each layer of the cabinet, and a mounting plate is installed at the entrance and exit to cover the entrance and exit masks. At the same time, the BMU It is installed on the inner side of the mounting plate, so that the BMU can be put in and taken out from the entrance with the removal of the mounting plate. However, the current method of fixing the BMU to the box is to fix the BMU to the mounting plate with four bolts, and then use Four bolts fix the mounting plate on the outside of the box. When the BMU needs to be overhauled, only 8 bolts need to be removed to take the BMU out. The same is true for installation, and 8 bolts need to be tightened. This method improves productivity Although it has been improved, it is still cumbersome due to the large number of bolts that need to be fastened, and the efficiency of installation and disassembly is not high, which still becomes a problem that affects productivity

In addition, in the traditional installation method, after removing the mounting plate, since the mounting plate leaves the box body, when installing again, it is necessary to align the position of the screw hole of the mounting plate with the position of the mounting hole on the box body, because the mounting plate is thin And the BMU has been installed on the inner side, so it has a certain weight, which makes it difficult for the operator to hold it and align the installation holes, which also causes low efficiency and affects production.

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