Device for testing electrical performance of electrode material of lithium ion battery, and battery manufacturing method

An electrical performance testing, lithium-ion battery technology, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve the problems of complex testing process, waste of materials, waste of materials, etc. The effect of simplifying the structure

CN105676031AActive Publication Date: 2016-06-15株洲升华科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-06-15

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Abstract

The invention provides a device for testing the electrical performance of an electrode material of a lithium ion battery, and a battery manufacturing method. The device comprises a to-be-detected buckle-type battery, and the to-be-detected buckle-type battery comprises a battery negative electrode housing, a battery positive electrode housing, a conductive buffering layer, a negative electrode piece, a to-be-measured positive electrode piece, a negative electrode limiting piece, electrolyte and a partitioning film. The conductive buffering layer and the negative electrode limiting piece are located between the battery negative electrode housing and the battery positive electrode housing, and the conductive buffering layer is attached to the battery negative electrode housing. The negative electrode piece and the to-be-measured positive electrode piece are located between the negative electrode limiting piece and the battery positive electrode housing. The negative electrode limiting piece is provided with a first positioning groove, and the negative electrode piece is located in the first positioning piece. The battery positive electrode housing is provided with a second positioning groove, and the to-be-measured positive electrode piece is located in the second positioning groove. The partitioning film is located between the negative electrode piece and the to-be-measured positive electrode piece. The electrolyte is disposed between the negative electrode limiting piece and the partitioning film and between a positive electrode limiting piece and the partitioning film. The device simplifies the structure of the to-be-detected battery, and the method simplifies the manufacturing technology of a to-be-measured battery before total detection, and saves the cost.
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Description

technical field

[0001] The invention relates to the technical field of performance testing of lithium-ion battery electrode materials, in particular to a lithium-ion battery electrode material electrical performance testing device and a battery manufacturing method. Background technique

[0002] Lithium-ion battery testing mainly uses half-cell testing or full-battery testing. At present, the electrical performance evaluation of electrode materials for lithium-ion batteries at home and abroad generally uses button batteries (half-cells, that is, the counter electrode is metal Li), which is widely used because of its simple test method and low cost.

[0003] The inventor found in the research that there are at least the following disadvantages in the prior art when lithium-ion batteries are used for testing:

[0004] First, compared with the full battery test, the half battery test lacks the evaluation of cycle performance test, high and low temperature test and real capacit...

Examples

Embodiment Construction

[0032] Compared with the full battery test, the half battery test lacks the evaluation of cycle performance test, high and low temperature test and real capacity test. However, the full battery test has a complicated process and high cost. General battery material manufacturers seldom conduct full battery performance tests, and their customers often perform performance evaluations. This makes the evaluation cycle very long and the cost of one evaluation is high; conventional full batteries During the performance test, a large amount of raw materials are needed, including aluminum foil, copper foil, tabs, tapes, battery casings, etc.; at the same time, there are many and complicated equipment required, including tab welding machines, winding machines, laser welding, Slitting machine, etc.; the amount of corresponding raw and auxiliary materials is also very large; because of the complicated process, there is a lot of waste caused by defective products in the production process. ...