Calibration method and detection method for internal temperature of energy storage battery
An energy storage battery, internal temperature technology, applied in the application of thermometers, thermometers, measuring electricity, etc., can solve problems such as damaging structures
Active Publication Date: 2020-10-09
ZHENGZHOU UNIV
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[0005] The purpose of the present invention is to provide a calibration method and a detection method for the internal temperature of the energy storage battery to solve the problem in the prior art that the method for detecting the internal temperature of the energy storage battery destroys its structure
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[0032] The purpose of the present invention is to provide a calibration method and a detection method for the internal temperature of the energy storage battery, so as to solve the problem in the prior art that the internal temperature detection method of the energy storage battery destroys its structure.
[0033] Detection method embodiment:
[0034] This embodiment provides a method for detecting the internal temperature of an energy storage battery, the process of which is as follows figure 1 shown, including the following steps:
[0035] (1) Through the calibration experiment, the relationship between the internal temperature of the energy storage battery and its AC impedance angle is obtained.
[0036] (2) Detect the energy storage battery to obtain its AC impedance, and calculate its AC impedance angle according to its AC impedance.
[0037] (3) According to the relationship between the internal temperature of the energy storage battery and its AC impedance angle and t...
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The invention provides a calibration method and a detection method for the internal temperature of an energy storage battery. The detection method comprises the steps of carrying out the calibration experiment of the energy storage battery, and obtaining the relation between the internal temperature of the energy storage battery and an alternating-current impedance angle; and detecting an alternating-current impedance angle of the energy storage battery, and obtaining the internal temperature of the energy storage battery by combining the calibrated relationship between the internal temperature of the energy storage battery and the alternating-current impedance angle. The method for carrying out the calibration experiment on the energy storage battery comprises the steps of putting the energy storage battery into a constant-temperature box; and adjusting the temperature of the constant-temperature box within a set temperature range according to a set step length, detecting the surfacetemperature of the energy storage battery at each temperature as the internal temperature of the energy storage battery, and detecting the alternating-current impedance angle of the energy storage battery at each temperature to obtain the corresponding relationship between the internal temperature of the energy storage battery and the alternating-current impedance angle of the energy storage battery. According to the technical scheme provided by the invention, the problem that the structure of the energy storage battery is damaged by a method for detecting the internal temperature of the energy storage battery in the prior art can be solved.
Description
technical field [0001] The invention belongs to the technical field of detecting the internal temperature of an energy storage battery, and in particular relates to a calibration method and a detection method for the internal temperature of an energy storage battery. Background technique [0002] Energy storage batteries, such as lithium batteries, during operation, their internal temperature will not only affect the safety of their operation, but also affect their working efficiency. For example, when the internal temperature of a lithium battery is too high, it may cause an explosion. When the lithium battery When the internal temperature is too low, it will not be able to discharge normally. Therefore, in order to ensure the safety and stability of the lithium battery, it is necessary to detect its internal temperature. [0003] The temperature sensor installed outside the lithium battery pack cannot sense the internal temperature in real time, and the internal temperatu...
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IPC IPC(8): G01R31/374G01R31/389G01K13/00
CPCG01R31/374G01R31/389G01K13/00Y02E60/10
Inventor 高金峰崔乐乐金阳吕娜伟
Owner ZHENGZHOU UNIV