Lithium-ion battery shaping device and method

Abstract

The invention provides a lithium ion battery shaping device and method. The device includes a heat-insulated pressure vessel, a furnace cavity encapsulated in the heat-insulated pressure vessel, and a load chamber arranged in the furnace cavity. There is a storage space for placing lithium-ion batteries to be reshaped in the furnace cavity, and a temperature sensor is also set in the storage space. and the pressure sensor; the load chamber is electrically connected to the temperature sensor and the pressure sensor respectively, and communicates with the storage space through the pressure medium, and the load chamber is used to obtain the detected temperature and the detected pressure from the temperature sensor and the pressure sensor respectively, according to the detected temperature and the detected pressure, Use the pressure medium to pressurize and heat the storage space, so that the storage space reaches the isostatic pressure condition required for shaping the lithium-ion battery, and maintain the storage space to maintain the preset time length under the isostatic pressure condition, so as to realize the isostatic pressure condition Next, reshape the lithium-ion battery. The technical solution of the invention can make the force of the lithium ion more balanced during shaping, with less damage and less deformation.

Description

technical field [0001] The invention relates to the technical field of lithium ion battery production, in particular to a lithium ion battery shaping device and method. Background technique [0002] At present, with the rapid development of new energy vehicles, the application of lithium-ion batteries in new energy vehicles is becoming more and more extensive, and the production of lithium-ion batteries is receiving more and more attention. [0003] In the production process of lithium-ion batteries, in order to meet the requirements of the thickness, hardness, surface flatness and appearance of the battery, maintain the good interface of the pole pieces in the lithium-ion battery and prevent the rapid aging of the batteries inside the lithium-ion battery, the shaping process is particularly important. important. In practical applications, most of the existing lithium-ion battery production processes require a shaping process. Generally, for lithium-ion batteries with regu...

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Problems solved by technology

[0005] The present invention provides a lithium-ion battery shaping device and method to overcome the problem of unbalanced stress on the lithium-ion battery caused by the use of fixtures in the prior art for lithium-ion battery shaping and hot pressing or cold pressing. The problem of battery damage is relatively large, especially for irregular shaped lithium-ion batteries. The vest designed during the shaping process will also press out pits on the irregular-shaped positions on the surface of the lithium-ion battery, which is very easy to occur Analysis of lithium, making lithium-ion batteries have certain safety hazards

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