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Lithium battery dendritic crystal growth state monitoring device and method

A growth state and monitoring device technology, applied in measurement devices, instruments, scientific instruments, etc., can solve the problems of high price and inconvenience to integrate into the interior of lithium batteries, so as to reduce electrical signal errors, reduce lithium ion concentration errors and lithium batteries. Dendrite growth state error and the effect of reducing dendrite growth state error in lithium batteries

Pending Publication Date: 2022-07-01
LASER RES INST OF SHANDONG ACAD OF SCI
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  • Application Information

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Problems solved by technology

[0005] This application provides a lithium battery dendrite growth state monitoring device and method to solve the technical problems that the lithium battery dendrite growth state monitoring device and method are expensive and inconvenient to be integrated inside the lithium battery

Method used

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  • Lithium battery dendritic crystal growth state monitoring device and method
  • Lithium battery dendritic crystal growth state monitoring device and method
  • Lithium battery dendritic crystal growth state monitoring device and method

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Embodiment Construction

[0038]In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described The embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present application.

[0039] see figure 2 , the embodiment of the present application provides a lithium battery dendrite growth state monitoring device, including a bus 1, a signal processing and demodulation system 3, an electrical signal wire 4, a light output signal amplifying circuit system 5, a laser diode control circuit system ...

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Abstract

According to the lithium battery dendrite growth state monitoring device and method provided by the embodiment of the invention, an optical fiber coupler is connected with a laser diode, a light emitting detection photodiode and an optical circulator through optical fibers; the emergent light signal amplification circuit system is connected with the emergent light detection photodiode, the signal processing and demodulation system and the laser diode control circuit system, the laser diode control circuit system is connected with the signal processing and demodulation system and the laser diode, and the optical circulator is connected with the optical fiber sensing probe and the return light detection photodiode through optical fibers. The return light signal amplification circuit system is connected with the return light detection photodiode and the signal processing and demodulation system, the temperature compensation signal amplification circuit system is connected with the temperature compensation photodiode and the signal processing and demodulation system, the signal processing and demodulation system is connected with the bus, and all components in the device are low in price and small in size. The lithium battery dendrite growth state monitoring device is low in price and convenient to integrate in the lithium battery.

Description

technical field [0001] The present application relates to the field of lithium battery dendrites, and in particular, to a device and method for monitoring the growth state of lithium battery dendrites. Background technique [0002] The electrolyte is an important part of the lithium battery. The electrolyte wets the positive electrode, the negative electrode and the separator of the lithium battery, so that the lithium ions move between the positive electrode and the negative electrode of the lithium battery, so that the lithium battery can achieve a normal charge-discharge cycle. The concentration of lithium ions in the electrolyte affects the growth of lithium dendrites in lithium batteries. However, the continuous growth of lithium dendrites will cause the lithium dendrites to pierce the separator of the lithium battery, which will lead to the formation of micro-short circuits inside the battery, making the lithium battery hot. out of control. [0003] In order to avoid ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/17G01N21/01
CPCG01N21/17G01N21/01G01N2021/0112Y02E60/10
Inventor 王蒙闵力李淑娟赵文安杨元元张绪成
Owner LASER RES INST OF SHANDONG ACAD OF SCI
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