Battery cell short circuit detection clamp, device and detection method

Abstract

In order to overcome the defects that metal impurities on the outer layer of a battery cell are difficult to detect by an existing Hi-pot test method and potential safety hazard exists, the inventionprovides a battery cell short circuit detection clamp that comprises a conductive piece and an electric connecting piece, wherein the electric connecting piece is respectively and electrically connected with the conductive piece and the positive electrode or the negative electrode of the battery cell, a clamping space matched with the battery cell in shape is defined by the conductive piece, and when the battery cell short circuit detection clamp clamps the battery cell in the clamping space, the inner wall of the conductive piece is attached to the outer wall of the battery cell. Meanwhile, the invention further discloses a detection device comprising the battery cell short circuit detection clamp and a detection method. According to the battery cell short circuit detection clamp, the short circuit risk of impurities on the outer layer of the battery cell can be found early, and the short circuit test accuracy is improved.

Description

technical field [0001] The invention belongs to the technical field of battery detection technology, and in particular relates to a jig, device and detection method for short-circuit detection of batteries. Background technique [0002] If there is any factor or possibility of internal short circuit inside the finished lithium-ion battery, it will lead to thermal runaway of the battery and then a fire and explosion, and more seriously, it will endanger the safety of people's lives and property. [0003] In the lithium-ion battery production process, after the pole pieces that constitute the power battery core are formed by winding or lamination processes, the next important step is the Hi-pot test, which needs to detect whether there are particles in the core forming or lamination process. , burrs, or any other possibility that may cause internal short circuits in subsequent batteries. Only in this way can it be ensured that the battery is safe during the post-production pr...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem that the existing Hi-pot test method is difficult to detect the metal impurities on the outer layer of the battery cell and there are potential safety hazards, the present invention provides a battery short circuit detection jig, device and detection method

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