A jig, device, and detection method for battery short-circuit detection

Abstract

In order to overcome the problem that the existing Hi-pot test method is difficult to detect metal impurities in the outer layer of the battery cell and there are potential safety hazards, the present invention provides a short circuit detection fixture for the battery cell, including a conductive part and an electrical connector, and the electrical connector They are respectively electrically connected to the positive pole or the negative pole of the conductive member and the battery cell. The conductive member encloses and forms a clamping space suitable for the shape of the battery core. When the core is clamped in the clamping space, the inner wall of the conductive member is attached to the outer wall of the electric core. At the same time, the invention also discloses a detection device and a detection method including the above-mentioned battery short-circuit detection jig. The electric core short-circuit detection jig provided by the present invention detects the short-circuit risk of the impurities in the outer layer of the electric core early, and improves the accuracy of the short-circuit test.

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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