Cover member and power supply device equipped with this cover member

Abstract

In the power supply device, there is a problem that it is difficult to attach the cover member when the length of the bus bar module connecting the battery varies. The present invention aims to solve the above-mentioned problems by a method in which, as opposed to a battery assembly in which a plurality of batteries are stacked has a plurality of bus bars connecting adjacent batteries to each other, the bus bar is mounted and stacked on the battery. The main body part (8) on the assembly, the bus bar module (6) with a plurality of positioning protrusions (29) and a plurality of locking parts (30) arranged on the main body part, the above-mentioned cover part (1) has multiple The stacking direction (X) of each battery is arranged in a row, and covers a plurality of covering parts (10) of each bus bar, and an elastic deformation part (14) that displaceably connects the adjacent covering parts to each other, and the covering parts respectively have The positioning hole (11) through which the above-mentioned positioning protrusion is inserted, and the locking receiving part (12) which is locked by the above-mentioned locking part. A shape that can be inserted.

Description

technical field [0001] The present invention relates to a power supply device used in hybrid vehicles, electric vehicles, etc., and more particularly to a cover member mounted on a bus bar module for connecting a plurality of batteries in a row, and a power supply device including the cover member. Background technique [0002] A power supply device as a drive source of the electric motor is mounted on an electric vehicle running using an electric motor, a hybrid vehicle running using an engine and an electric motor, and the like. This power supply unit is composed of a battery assembly composed of a plurality of batteries provided with a positive electrode at one end and a negative electrode at the other end in a state where the positive electrode and the negative electrode are adjacent to each other. The battery assembly is composed of a bus bar module on a surface provided with positive and negative electrodes, and a cover member attached to the bus bar module. [0003] ...

AI Technical Summary

Problems solved by technology

[0010] However, since the number of batteries in the current battery assembly increases with the increase in voltage, the cumulative tolerance (tolerance caused by the accumulation of tolerances for each battery) is larger than that of conventional products. Therefore, when stacked on the battery assembly When the connection box of the bus bar module is provided with an elastic part for absorbing tolerances, the length of the connection box changes due to the elastic part, etc., and the interval between the plurality of protrusions also changes accordingly. Therefore, if When the cover member disclosed in the above-mentioned Patent Document 1 is mounted on the connection box, the cover main body of the cover member and the locking claws of the pair of opening and closing parts are displaced with respect to the protrusions of the connection box, making it difficult to lock them. There is a problem that workability at the time of installation is lowered because the claws are locked with each protrusion.

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