Lithium ion battery short-circuit detection device and method

Abstract

The invention relates to a lithium ion battery short-circuit detection device and method. The lithium ion battery short-circuit detection device comprises a detection circuit, a driving mechanism, a sliding mechanism, electrode lug detection probes used for detecting a positive electrode lug and a negative electrode lug of a battery, and membrane detection probes used for detecting an aluminum plastic membrane of the battery, wherein the sliding mechanism is connected with the driving mechanism, and slides through driving of the driving mechanism, the electrode lug detection probes and the membrane detection probes are connected to the sliding mechanism, and electrically connected to the detection circuit, and the membrane detection probes and the electrode lug detection probes carry out synchronous movement through driving of the sliding mechanism. Therefore, whether the position between the positive electrode lug and the negative electrode lug is short-circuited or not can be detected through the electrode lug detection probes, and meanwhile the membrane detection probes are used for detecting whether short-circuits happen in the aluminum plastic membrane and the battery. Two types of detection are synchronously carried out, detection results are synchronous and more accurate and fast to obtain, time and labor are saved, production efficiency is improved, battery quality is guaranteed, and the production requirement of lithium ion batteries at present is well met.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a lithium-ion battery short-circuit detection device and a method thereof. Background technique [0002] Since the commercialization of lithium-ion batteries, lithium-ion batteries have grown rapidly, especially in the fields of telecommunications and portable appliances, such as mobile phones, notebook computers, camcorders, etc., which are increasingly dominant. In the next few years, more enterprises in my country will invest in the production of lithium-ion batteries. In view of the outstanding advantages and broad market prospects of polymer lithium-ion batteries, the country has listed the industrialization of polymer lithium-ion batteries as the object of key support and policy guidance. However, during the manufacturing process of polymer lithium-ion batteries, It still has imperfections, such as: it cannot be easily made into batteries of various shapes, the specific ...

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Problems solved by technology

[0004] In addition, no matter what kind of short circuit, whether it is an external short circuit or an internal short circuit, the battery will generate a lot of heat due to the short circuit, and the temperature is very high. Before the circuit breaks, it is enough to melt the general metal, which may cause a fire or burn out. Electrical appliances, etc., which threaten the safety of property and life

[0005] At present, there are many devices on the market for lithium-ion battery short-circuit detection devices, such as battery short-circuit comprehensive testers, multimeters, remote control high-current short-circuit devices, etc., all testers only test a certain indicator of the battery cell, such as a multimeter, only It can test the short circuit of the battery cell, but not the short circuit of the aluminum plastic film. Similarly, the battery short circuit comprehensive tester only shows the short circuit of the battery, and cannot distinguish between the short circuit of the battery core and the short circuit of the aluminum plastic film.

Therefore, it is not suitable for testing the short circuit of polymer batteries. Therefore, to a certain extent, it affects the safety hazards of batteries, fundamentally restricts the quality of products, and greatly reduces customer satisfaction.

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