Battery thickness change detecting device and battery safety detecting and judging method
A technology of thickness change and detection device, applied in electromagnetic measurement device, electric/magnetic thickness measurement, measurement device, etc., can solve the problems of large numerical error and inability to monitor battery thickness change in real time, etc., to reduce errors, simple structure, and solve the Inaccurate effect
Active Publication Date: 2014-08-13
唐山国轩电池有限公司
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Problems solved by technology
[0003] The current method of testing the thickness of the battery is mainly to use a caliper to measure, which makes it impossible to monitor the thickness of the battery in real time during the test, and the numerical error obtained by this mechanical measurement is relatively large, so the development of a new Thickness measurement device is imperative
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[0023] In order to further describe the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited within the scope of the embodiments.
[0024] figure 1 and 2 A battery thickness change detection device shown includes an upper plate 10 for loading a monocrystalline silicon diaphragm 40 and a bottom plate 20 for placing a battery 30 arranged in parallel to each other, and the upper plate 10 and the bottom plate 20 make it The relative position is fixed, and the monocrystalline silicon diaphragm 40 and the battery 30 are in contact without pressure.
[0025] Single crystal silicon diaphragm 40 is connected with internal resistance meter by lead wire 50, please refer to image 3 , the internal resistance meter is connected to the internal resistance of the monocrystalline silicon diaphragm 40 through a differential amplifier, and the internal resistan...
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The invention relates to the technical field of battery safety testing, and discloses a battery thickness change detecting device and a battery safety detecting and judging method. The battery thickness change detecting device comprises an upper plate and a lower plate parallel to each other, the upper plate is used for loading a monocrystal silicon membrane, the bottom plate is used for holding a battery, the relative positions of the upper plate and the bottom plate are fixed through a connecting piece, the monocrystal silicon membrane and the battery are in contact with each other without pressure, and the monocrystal silicon membrane is connected with an external circuit through a lead. The battery thickness changing detecting device is simple in structure and convenient to use, the limitedness of a traditional method that t the thickness of the battery is measured through a caliper is changed, and the change of the battery thickness is measured according to the crystal structure change and the resistance change caused by extruding the monocrystal silicon membrane with different degrees. By means of the device, the problems that a common measuring device is not high in precision, and real-time monitoring cannot be achieved are effectively solved, the measuring process operation is simplified, and the errors caused by the common operation are greatly reduced.
Description
technical field [0001] The invention relates to the technical field of battery safety testing, in particular to a battery thickness change detection device and a battery safety detection and judging method. Background technique [0002] To measure the basic performance indicators of batteries, in addition to capacity, internal resistance, voltage and power, thickness is also an important indicator that affects battery performance. With the extensive and rapid development of lithium-ion batteries and the development of electronics and transportation vehicles, thinner batteries have attracted more and more attention and attention. At present, due to the precision of electronic devices, the accuracy of battery thickness measurement is also getting higher and higher. If the thickness of the battery is not measured accurately, the actual size of the battery will not match the related equipment, resulting in the scrapping of the battery and the waste of resources. At the same ti...
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IPC IPC(8): G01B7/06G01R31/36
Inventor 李新静张佳瑢丁绍玉
Owner 唐山国轩电池有限公司