Point contact type cell pressure short circuit testing device

Abstract

The invention relates to a point contact type cell pressure short circuit testing device, which comprises a lower fixed plate, an upper movable plate and a screw propulsion device. The movable plate is parallel to the fixed plate, the screw propulsion device is used for pushing the movable plate to move towards the fixed plate, a group of fixed elastic squeezing arms is disposed on the fixed plate, the movable plate is provided with a group of movable elastic squeezing arms, one end of each movable elastic squeezing arm is fixed onto the movable plate, an upper insulating force application cushion which is used for contacting with a cell is disposed at the other end of each movable elastic squeezing arm, one end of each fixed elastic squeezing arm is fixed onto the fixed plate, a lower insulating force application cushion which is used for contacting with the cell is arranged at the other end of each fixed elastic squeezing arm, the quantity of the fixed elastic squeezing arms is identical to that of the movable elastic squeezing arm, and the fixed elastic squeezing arms and the movable elastic squeezing arms are arranged in a one-to-one correspondence manner and are positioned on the same line. The point contact type cell pressure short circuit testing device is fine in testing effect, convenient in operation and speedy and efficient in testing, a testing structure is simple, and a large quantity of labor is not required.

Description

technical field [0001] The invention relates to the field of battery short-circuit testing, in particular to a point-contact pressure short-circuit testing device. Background technique [0002] The battery manufacturers test the short circuit of the battery cell, and generally use the surface contact method to measure the short circuit of the battery cell. For most batteries, especially the square lithium-ion power battery, the cause of the short circuit of the battery cell is generally a short circuit in a small area, which causes the entire The short circuit of the battery cell, the surface contact method is usually used to measure the short circuit of the battery cell, sometimes it is impossible to measure the short circuit of the small area, so the short circuited battery cells flow to the downstream manufacturers, affecting the quality and production efficiency of the downstream manufacturers' products. Contents of the invention [0003] The purpose of the present inv...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a cell point contact pressure short circuit test device to solve the problem that the surface contact method cannot measure small area short circuits

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