A battery box for an electric vehicle

Abstract

The invention discloses a battery box for an electric vehicle, which includes a box body and a main body of a cover plate, buckles are installed on the end of the main body of the cover plate through an elastic connector, and a slot matching the buckle is opened on the side wall of the box body , the battery pack is fixed in the box, a balance system is installed on the battery pack, a through hole is opened on the side wall of the box body on the same side as the card slot, and support plates are respectively installed on the two side walls of the through hole, A plurality of oscillating plates are arranged up and down side by side and rotated on two supporting plates, and a left wing plate and a right wing plate whose ends are equal to the two ends of the oscillating plate are fixed respectively. The left wing plate extends upward, the right wing plate extends downward, and the right wing plate extends downward. The length of the board is greater than the length of the left wing board. When the temperature in the box gradually decreases, the swing plate will return to the previous inclined state due to the gravity difference at both ends, so that the through hole will be closed again, and the external dust and other impurities will not easily enter the box, so as to ensure the normal operation of the battery pack. Work.

Description

technical field [0001] The invention relates to a battery pack of an electric vehicle, in particular to a battery box for an electric vehicle. Background technique [0002] In order to protect the environment, energy conservation and environmental protection and the promotion and application of green energy have emerged in response to the situation. One of the ways to protect the environment is to expand the use of electric vehicles and reduce the use of fuel-efficient vehicles, but now electric vehicles have been in a downturn , The main bottleneck restricting the development of electric vehicles is the life of power batteries. Generally speaking, the battery box of an electric car needs 75 lithium-ion batteries in series to supply power to reach 200AH / 300V. Each lithium-ion battery is connected in series to form a battery pack. Because the aging degree of each lithium-ion battery in the battery pack is very different , in the process of charging the battery pack, there is...

AI Technical Summary

Problems solved by technology

However, after the battery box is loaded with a battery pack, the space between the battery pack and the upper cover of the battery box is small, and the existing equalization system is generally large in size and cannot be placed inside the battery box. Therefore, the existing equalization system is generally placed in the battery box The exterior takes up a lot of space outside the car. Under the premise that the space of the car is so compact, the market is eager to place the equalization system inside the battery box without changing the size of the original battery box, so as to save the space of the car.

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