Method for testing anisotropic heat diffusion coefficient of power battery at same time
A technology of thermal diffusivity and power battery, applied in the direction of material thermal conductivity, material thermal development, etc., can solve the problems of large influence of test accuracy calculation model, poor recognition parameter accuracy, and inaccurate simulation model, so as to save the cumbersome process , the effect of improving accuracy and reliability
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[0027] Example 1
[0028] This embodiment provides a method for testing anisotropic thermal diffusion coefficient of a power battery, which includes the following steps:
[0029] S10. Put the power battery sample in a constant temperature box at room temperature, and record the surface temperature T of the power battery sample after reaching thermal equilibrium 0 .
[0030] In this embodiment, the power battery sample can be clamped with an adiabatic clamp, and the power battery sample is allowed to stand in a 25°C thermostat. The recorded equilibrium temperature is 25.2°C. Since the equilibrium temperature is read by the temperature sensor, there may be errors.
[0031] S20, the temperature is T w The constant temperature heating source heats other surfaces perpendicular to the lamination direction of the power battery sample 2. In order for the power battery sample to have an obvious heating effect, T w Should be better than T 0 At least 10°C higher. In order to reduce the influence...
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