Lithium battery three-electrode testing device
A testing device and lithium battery technology, applied in the direction of measuring device, measuring electricity, measuring electrical variables, etc., can solve the problem that the state of positive electrode, negative electrode and lithium metal negative electrode cannot be detected at the same time, the assembly process control of button battery is complicated, and the data is unified. It is easy to assemble, improve the measurement efficiency, and the structure of the device is simple.
Inactive Publication Date: 2021-05-14
东方旭能(山东)科技发展有限公司
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Problems solved by technology
[0004] 1. The button battery assembly process is complex to control, and the assembly process will affect the test results;
[0005] 2. The positive electrode material and the negative electrode material need to be tested separately. When the positive and negative electrode materials are assembled into a full battery, they must no longer be part of the test at that time, resulting in the measured data actually coming from different test pieces, and the data uniformity is not good.
[0006] 3. It is not possible to charge or discharge the three battery systems composed of the positive electrode, the negative electrode and the lithium metal negative electrode in real time, and the positive electrode, the negative electrode and the lithium metal negative electrode cannot be detected at the same time during the experiment. status
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[0021] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.
[0022] Please refer to figure 1 As shown, it is a schematic structural diagram of Embodiment 1 of the lithium battery electrode testing device of the present invention. The lithium battery electrode testing device includes a positive electrode storage tank, a negative electrode storage tank, and a metal Li storage tank, the positive electrode storage tank is provided with a positive electrode plate to be tested 1, and the negative electrode storage tank is provided with a negative electrode plate to be tested 2, A metal Li plate 3 is provided in the metal Li storage tank, and a diaphragm 4 and an electrolyte are provided in the gap formed between the plates. The positive plate 1 to be tested, the negative plate 2 to...
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The invention discloses a lithium battery electrode testing device which comprises a positive electrode accommodating groove, a negative electrode accommodating groove and a metal Li accommodating groove, the positive electrode accommodating groove and the negative electrode accommodating groove are respectively provided with a part adjacent and parallel to the metal Li accommodating groove, and the positive electrode accommodating groove and the negative electrode accommodating groove are respectively provided with an adjacent and parallel part; gaps are formed among the positive electrode accommodating groove, the negative electrode accommodating groove and the metal Li accommodating groove; and a diaphragm and electrolyte are arranged in the gaps. Therefore, the lithium battery electrode testing device disclosed by the invention can be flexibly combined into a half battery and a full battery based on the same positive electrode material and the same negative electrode material, and all measurement items are based on the same material, so that the measurement consistency is high; and the structure is simple, the assembling is easy, and the measuring efficiency is improved.
Description
technical field [0001] The invention relates to the field of lithium battery electrode performance testing, in particular to a lithium battery three-electrode testing device. Background technique [0002] The performance of a lithium battery mainly depends on the performance of its positive and negative electrodes. At this stage, in order to test the performance of the positive and negative electrodes, it is mainly in the form of assembling the positive and negative electrode materials into a button battery, that is, cutting the positive and negative electrode materials to be tested into The small discs are respectively used as the positive electrode material of the button battery, and the negative electrode material is uniformly made of metal Li, that is, in the test process, both the positive electrode material and the negative electrode material are positive electrodes compared to metal Li. After being assembled into a button battery, the button battery is tested for vari...
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IPC IPC(8): G01R31/364
CPCG01R31/364
Inventor 李竞妍汤帅刘超李元斌孔维龙李玉光吴红莉
Owner 东方旭能(山东)科技发展有限公司