Large current plane contact conductive device

Abstract

The invention discloses a heavy current plane contact conductive device which comprises a probe main body, wherein the probe main body comprises a voltage probe and a probe rod; the probe rod is sleeved on the voltage probe; the probe rod and the voltage probe are in insulating connection with each other; the heavy current plane contact conductive device further comprises a contact head; a spherical groove and a first chamber are arranged on the contact head; a spherical joint is arranged at the front end of the probe rod; the spherical joint is limited in the spherical groove and is capable of rotating relative to the spherical groove along a three-dimensional direction; the front end of the voltage probe is penetrated through the first chamber and extends out of the contact head; the peripheral size of the first chamber is more than the peripheral size of the corresponding part of the voltage probe located in the first chamber; a connecting spring is arranged between the contact head and the spherical joint and is used for realizing the conductive connection between the contact head and the spherical joint; the moveable connection capable of rotating along the three-dimensional direction is formed between the probe main body and the contact head; the contact head is capable of automatically rotating and calibrating, is capable of aligning a test surface of a battery and increasing the test precision and is suitable for heavy current test.

Description

technical field [0001] The invention belongs to the field of battery testing equipment, and in particular relates to a large-current planar contact conductive device. Background technique [0002] With the outbreak of the new energy vehicle industry, power batteries are the core components of new energy vehicles, and their electrical performance and safety performance directly affect the application and promotion of electric vehicles. Among them, in the production and manufacturing process, the formation, capacity separation and subsequent electrical performance and safety performance testing of power batteries are inseparable from testing equipment. The conductive device used by the testing equipment to fix the battery to be tested affects whether the testing equipment can accurately read the test data of the power battery. In the power battery, the pole only has a small external contact area. How to use this limited contact area without affecting the accurate and stable r...

AI Technical Summary

Problems solved by technology

The test plane and the measured plane are not parallel, so the effective contact area will be much smaller than the theoretical coverage area, which increases the contact impedance and reduces the overcurrent capability, which affects the accuracy of the detection and the reading of the data by the detection equipment.

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