Soft package battery side voltage detection device and side voltage detection method

Abstract

The invention provides a soft package battery side voltage detection device and a side voltage detection method. The detection device comprises a supporting unit, a battery pressing unit, a side voltage detection unit and a control unit, wherein the battery pressing unit comprises a lower pressing assembly and an upper pressing assembly, the lower pressing assembly comprises a lower pressing driving mechanism and an upper pressing plate, and the upper pressing assembly comprises a supporting base, a pressing driving mechanism and a lower pressing plate; the side voltage detection unit comprises a tab pressing conduction mechanism and a tab protection compatible moving mechanism, the tab pressing conduction mechanism comprises a tab pressing assembly and a tab conduction mechanism, and thetab protection compatible moving mechanism is arranged between the supporting base and the lower pressing plate; and the control unit comprises a controller and a plurality of pressure sensors. The side voltage detection method comprises the steps of adjusting the position according to the size of incoming materials; and clamping a soft package battery by the battery pressing unit after the soft package battery is fed in place, and measuring the soft package battery. The beneficial effects are that the soft package battery side voltage detection device can measure batteries of the same type and different sizes, and is wide in application range; and the whole process is detected automatically, and the work efficiency is high.

Description

technical field [0001] The invention relates to a side voltage detection device and a side voltage detection method of a soft pack battery, belonging to the technical field of side voltage detection of a soft pack lithium battery. Background technique [0002] At present, the application of lithium batteries has become more and more extensive. Compared with traditional batteries, it has the advantages of large capacity, high working voltage, fast charging speed, wide working temperature range, long cycle life, small size and light weight. Because soft-pack batteries have greater capacity advantages compared with cylindrical and square batteries, more and more soft-pack lithium batteries are used as energy storage devices and power devices. Since the middle aluminum layer of the aluminum-plastic film of the pouch battery is easily short-circuited with the negative tab when the battery is packaged, the middle aluminum layer of the aluminum-plastic film will be corroded. There...

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Problems solved by technology

[0003] In the utility model patent (patent number: CN207248935U), it relates to a side voltage test device for a soft-packed lithium battery, which is mainly used to test the side voltage of the soft-packed battery with tabs on the same side. The test probe and the soft-packed lithium battery pass through The conductive cotton realizes the electrical connection, and then realizes the detection of the side voltage. In this scheme, there is a secondary electrical connection between the test probe and the soft-packed lithium battery, which will lead to inaccurate test results. In addition, in this test, no The pouch battery is under pressure, so it is impossible to judge whether its insulation performance is good or bad

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