Mobile power battery thermal management system detection device and method

Abstract

The invention provides a mobile power battery thermal management system detection device used for detecting and evaluating the thermal safety of a power battery of a power automobile. The device comprises a data detection module which comprises a temperature sensor, a heat flux density sensor, a Bluetooth transmitter and a data receiving transmitter for receiving and transmitting a temperature parameter and a heat flux density parameter; the data storage module is used for receiving and storing the temperature parameters and the heat flux density parameters and uploading the temperature parameters and the heat flux density parameters to the cloud; and the comprehensive evaluation module comprises a first data processor used for carrying out preliminary calculation processing to obtain an average temperature, a second data processor used for carrying out preliminary calculation processing to obtain an average heat flux density and an average heat flux density slope, a comprehensive dataprocessor used for carrying out comprehensive calculation, and an evaluation output display screen. The invention further provides a detection and evaluation method based on the mobile power batterythermal management system detection device to evaluate the thermal safety of the power battery.

Description

technical field [0001] The invention belongs to the technical field of power battery thermal characteristic testing, and in particular relates to a detection device and method for a mobile power battery thermal management system. Background technique [0002] With the continuous expansion of the use of power batteries, the thermal runaway detection technology of power batteries needs to be further improved. Especially in electric vehicles, the use environment of lithium-ion batteries is very complex and harsh, so it is necessary to establish a more scientific quantitative testing and evaluation method. especially urgent. [0003] Publication number CN109752659A discloses a liquid-cooled battery PACK test system and method, and invented a liquid-cooled battery PACK test system and method in the charging and discharging state. The thermal parameters are only detected based on temperature data. The parameters are relatively single, and the accuracy and precision of the detecti...

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Problems solved by technology

[0003] Publication number CN109752659A discloses a liquid-cooled battery PACK test system and method, and invented a liquid-cooled battery PACK test system and method in the charging and discharging state. The thermal parameters are only detected based on temperature data. The parameters are relatively single, the accuracy and precision of the detection cannot be guaranteed, and the heat flux parameters that change rapidly are not involved, so the thermal safety of the battery system cannot be scientifically evaluated

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