Power battery temperature correction method, device and computer-readable storage medium
A power battery and battery technology, applied in the field of vehicles, can solve problems such as large temperature differences, affecting battery accuracy, and inability to accurately characterize the temperature state of power batteries, so as to achieve the effect of improving accuracy, safety and reliability
Active Publication Date: 2021-06-29
HUMAN HORIZONS SHANGHAI NEW ENERGY POWERTRAIN TECH CO LTD
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Problems solved by technology
[0003] The inventor found in the process of implementing the present invention that the battery management system can only monitor the surface temperature of the busbars of the battery module because it is currently impossible to measure the internal temperature of the battery by embedding sensors inside the battery module, but the battery module The surface temperature of the bus bar of the battery module is quite different from the internal temperature of the battery module. The surface temperature of the bus bar of the battery module cannot accurately represent the current temperature state of the power battery. Therefore, it will affect the accuracy of battery temperature control and battery output power adjustment. , resulting in affecting the safety and reliability of power battery operation
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[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0056] see figure 1 , is a schematic flowchart of a power battery temperature correction method provided by an embodiment of the present invention.
[0057] A power battery temperature correction method provided by an embodiment of the present invention may be executed by a cloud server. The methods include:
[0058] S11. Obtain operating data of the power battery within the latest preset time; wherein, the operating data includes ambient temperature.
[0059] W...
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The invention discloses a power battery temperature correction method, device and computer-readable storage medium. The method includes: acquiring the operation data of the power battery within the latest preset time; wherein, the operation data includes the ambient temperature; The ambient temperature within the latest preset time is input to the pre-built temperature prediction model to obtain the cell temperature of the power battery at the current moment; wherein, the temperature prediction model is used to predict the current moment of the power battery according to the temperature difference estimation formula The temperature of the battery cell; the temperature difference estimation formula is used to represent the relationship between the difference between the temperature of the battery cell and the ambient temperature, the internal heat generation rate of the battery, the internal thermal resistance of the battery, the external thermal resistance of the battery, and the internal heat capacity of the battery cell; The current battery temperature parameter in the battery management system is corrected to the cell temperature of the power battery at the current moment. By adopting the embodiments of the present invention, the safety and reliability of power battery operation can be improved.
Description
technical field [0001] The present invention relates to the technical field of vehicles, in particular to a power battery temperature correction method, device and computer-readable storage medium. Background technique [0002] Electric vehicles have many advantages over conventional vehicles. However, the performance of the power battery in electric vehicles is greatly affected by temperature. Therefore, in order to ensure the performance of the power battery, the battery management system needs to monitor the temperature of the power battery, and perform battery temperature control and battery temperature control based on the monitored temperature. Output power adjustment. [0003] The inventor found in the process of implementing the present invention that the battery management system can only monitor the surface temperature of the busbars of the battery module because it is currently impossible to measure the internal temperature of the battery by embedding sensors ins...
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IPC IPC(8): G06F30/20H01M10/42
CPCG06F30/20G06F2119/08H01M10/42Y02E60/10
Inventor 李展刁增朋王宏伟
Owner HUMAN HORIZONS SHANGHAI NEW ENERGY POWERTRAIN TECH CO LTD