Battery energy storage system consisting of single batteries containing reference electrodes
A technology of battery energy storage system and single battery, applied in secondary battery manufacturing, sustainable manufacturing/processing, climate sustainability, etc. and other problems, to achieve the effect of improving the state of charge estimation ability and improving the safety early warning ability.
Inactive Publication Date: 2020-01-17
孙建芸
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Problems solved by technology
However, the current traditional single battery only has positive and negative electrodes, so the battery management system in the battery energy storage system cannot monitor the potential of the negative electrode of the battery, so it cannot judge whether there is lithium dendrite formation on the negative electrode of the single battery
It is precisely because of the insufficient design of this traditional single battery that the battery energy storage system cannot monitor the safety status of the battery in real time and accurately, resulting in frequent safety accidents of the energy storage system.
Method used
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[0014] combined with figure 1 , a battery energy storage system composed of a single cell containing a reference electrode, comprising a traditional single cell 1 and a single cell 2 with a reference electrode, the traditional single cell 1 and the single cell with a reference The battery positive pole 3 and the battery negative pole 4 are provided at the end of the single battery 2 of the electrode, and at least one reference electrode is arranged between the battery positive pole 3 and the battery negative pole 4 at the battery positive pole 3 and the battery negative pole 4 of the single battery 2 end with the reference electrode 5. One or more reference electrodes and the cells of the single battery are packaged in the same packaging case and share the same electrolyte. The location of the reference electrode can be any part of the cell packaging shell.
[0015] As a preferred implementation of this embodiment, the packaging structure of the traditional single battery 1 ...
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The invention discloses a battery energy storage system composed of single batteries containing reference electrodes. The battery energy storage system comprises a traditional single battery and a single battery with a reference electrode, the battery anodes and the battery cathodes are arranged at the end parts of the traditional single battery and the single battery with the reference electrode,and at least one reference electrode is arranged between the battery positive electrode and the battery negative electrode at the end part of the single battery with the reference electrode. By introducing the single battery containing the reference electrode into the battery energy storage system, the battery energy storage system can monitor the internal state of a battery cell in real time, the safety early warning capability of the battery energy storage system can be improved, at the same time, the reference electrode can accurately measure the electric potential (namely the voltage difference between the positive electrode and the reference electrode) of the positive electrode at the end part of the single battery and the electric potential (namely the voltage difference between thenegative electrode and the reference electrode) of the negative electrode of the battery, so that the state-of-charge estimation capability of the whole battery energy storage system is improved.
Description
technical field [0001] The invention relates to the field of battery technology, in particular to a battery energy storage system composed of a single battery containing a reference electrode. Background technique [0002] Regardless of whether the packaging form of the existing single battery is a soft pack, a square aluminum shell or a cylinder, there are only two tabs, that is, the positive electrode and the negative electrode. Therefore, the battery energy storage system assembled from traditional single batteries can only monitor the full voltage of the single battery, that is, the voltage difference between the positive and negative electrodes, and use this data to estimate the state of charge of the entire battery energy storage system (ie SOC, state of charge). At present, the highest SOC accuracy that can be achieved by this method is 5%, and this accuracy is further reduced with the aging of the battery, so it cannot meet the application requirements of the energy...
Claims
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Login to View More IPC IPC(8): H01M10/04
CPCH01M10/04Y02P70/50
Inventor 孙建芸
Owner 孙建芸