Electrode sheet charging and discharging pressure control device, control system and use method thereof

Abstract

The invention provides an electrode sheet charging and discharging pressure control device, a control system and a use method thereof. The device comprises a frame. A battery test chamber is arrangedat the lower part in the frame. A fixed actuator is arranged at the top of the frame. The output end of the actuator is connected with a pressure transmission disk through a connecting rod. A spring is arranged under the pressure transmitting disk. The lower end of the spring contacts the top of the battery test chamber. A pressure sensor is arranged under the battery test chamber. When the deviceis used, the pressure sensor is arranged under the battery test chamber to monitor pressure in real time and feed back pressure to a measurement feedback circuit. The measurement feedback circuit feeds back pressure to an external computer through a microprocessor to ensure that an electrode sheet works under the set pressure condition. The device provided by the invention has the advantages of convenient use and in-situ detection.

Description

technical field [0001] The invention relates to the technical field of electrode materials, in particular to an electrode sheet charging and discharging pressure control device, a control system and a use method thereof. Background technique [0002] With the development of the 3C field and electric vehicles, traditional batteries are gradually unable to meet people's needs, and a large number of scientific research institutions are increasingly researching and developing new electrode materials. However, a group of promising new electrode materials represented by silicon-based negative electrode materials generally have a phenomenon of huge volume changes during charging and discharging, and this phenomenon will lead to the collapse of the electrode structure, the decline in battery efficiency, and security issues, etc. Therefore, it is very urgent to study the volume change of electrode materials during the charge and discharge process. However, the existing methods that ...

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Problems solved by technology

[0002] With the development of 3C fields and electric vehicles, traditional batteries are gradually unable to meet people's needs, and a large number of scientific research institutions are increasingly researching and developing new electrode materials.

However, a group of promising new electrode materials represented by silicon-based negative electrode materials generally have a phenomenon of huge volume changes during charging and discharging, and this phenomenon will lead to the collapse of the electrode structure, the decline in battery efficiency, and security issues, etc.

Therefore, it is very urgent to study the volume change of electrode materials during the charge and discharge process. However, the existing methods that can characterize the volume change of electrode materials, such as scanning electron microscopy, are difficult to quantify and difficult to measure. The problem of in-situ monitoring will affect the exploration of the essential principle of the volume change of electrode materials and slow down the development process of new electrode materials

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