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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[0028] This embodiment provides a method for testing the anisotropic thermal diffusivity of a power battery, which includes the following steps:
[0029] S10. Put the power battery sample at room temperature in an incubator, 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 a thermal insulation clamp, and the power battery sample is placed in a 25°C incubator, and the recorded equilibrium temperature is 25.2°C. Since the equilibrium temperature is read by a temperature sensor, there may be errors.
[0031] S20. The user is already at a temperature of T w The constant temperature heating source heats other surfaces perpendicular to the stacking direction of the power battery sample 2, so that the power battery sample can have an obvious heating effect, T w Should be better than T 0 At least 10°C higher. In order to reduce the influence of contact t...
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