A battery management method and device
A battery management and battery technology, which is applied in the direction of measuring devices, measuring electricity, and measuring electrical variables, etc., can solve problems such as inability to reduce, inability to monitor battery status in real time, and inaccurate battery safety judgment results, etc.
Active Publication Date: 2021-10-19
NINGDE AMPEREX TECH
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Problems solved by technology
[0005] The purpose of the embodiments of the present invention is to provide a battery management method and device to solve the inaccurate battery safety judgment results in the prior art, and the inability to monitor the battery status in real time, which leads to the inability to reduce and avoid equipment battery safety accidents. problems that cause the device to catch fire
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[0055] In order to solve the inaccurate battery safety judgment results existing in the prior art and the inability to monitor the battery state in real time to reduce or avoid the problem of equipment fires caused by equipment battery safety accidents, a new battery is provided in the embodiment of the present invention. A management method and device, the method comprising: determining the open circuit voltage of the battery based on the voltage value and current value at the output terminal of the battery; determining the state of charge of the battery based on the open circuit voltage and the state of charge-open circuit voltage curve of the battery; Calculate the first consumption capacity of the battery based on the state of charge and the first capacity, wherein the first capacity is the battery capacity output by the battery from a fully charged state to a fully discharged state in the last monitoring cycle ; Calculate the second consumption capacity of the battery; whe...
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The invention relates to the technical field of battery management, in particular to a battery management method and device. The method is as follows: determine the open circuit voltage of the battery based on the voltage value and current value of the battery output terminal; determine the state of charge of the battery based on the open circuit voltage and the state of charge-open circuit voltage curve of the battery; and calculate the state of charge of the battery based on the state of charge and the first capacity. The first consumption capacity of the battery, wherein the first capacity is the battery capacity output from the fully charged state to the fully discharged state in the previous cycle; calculate the second consumed capacity of the battery; when judging the first consumed capacity and the second consumed capacity When the difference is greater than or equal to the threshold, it is determined that the battery state is abnormal. By adopting the above method, the accuracy of battery safety judgment is improved, and the possibility of battery safety accidents can be predicted, thereby reducing and avoiding the risk of equipment fires caused by battery safety failures.
Description
technical field [0001] The invention relates to the technical field of battery management, in particular to a battery management method and device. Background technique [0002] Lithium-ion battery is a new type of green chemical power source. Compared with traditional nickel-cadmium batteries and nickel-hydrogen batteries, it has the advantages of high voltage, long life, large capacity and energy density, small volume, and low self-discharge rate. At present, lithium-ion batteries have been widely used due to their high energy density, long service life, no memory effect, and environmental protection during application, and have been widely used in various portable electronic devices. [0003] However, due to the characteristics of lithium-ion batteries, it is easy to catch fire due to short-circuit and burn in environments such as low temperature, high temperature, violent impact, fire, overcharge and overdischarge, and its safety is far lower than that of lithium-ion bat...
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IPC IPC(8): G01R31/3842
CPCG01R31/3842
Inventor 吴飞金娟王可飞
Owner NINGDE AMPEREX TECH