ONLINE DETECTION METHOD FOR INTERNAL SHORT-CIRCUIT OF BATTERY
The present application relates to an online detection method for internal short-circuit of power battery, which comprises the following steps: in the process of charging and discharging, when the state of charge of a power battery is greater than a preset first threshold, monitoring and recording t...
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Main Authors | , , |
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Format | Patent |
Language | English French German |
Published |
24.05.2023
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Subjects | |
Online Access | Get full text |
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Summary: | The present application relates to an online detection method for internal short-circuit of power battery, which comprises the following steps: in the process of charging and discharging, when the state of charge of a power battery is greater than a preset first threshold, monitoring and recording the voltage for each cell in the power battery; in accordance with the recorded historical voltages of each cell, determining whether there is a cell with voltage less than a second threshold in the process of charging, and less than a third threshold in the process of discharging, if so, then marking the corresponding cell as an internal short-circuited cell. The present application could accurately determine whether a malfunction of internal circuit of power battery occurs during the operation of a vehicle, so as to guarantee the safety of the vehicle and the people on-board. |
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Bibliography: | Application Number: EP20170881338 |