Electric vehicle braking energy recovery method
A braking energy recovery and electric vehicle technology, applied in electric vehicles, electric braking systems, electric energy management, etc., can solve the problems of short service life of power batteries, low energy recovery efficiency, and no consideration of motor characteristics and battery status, etc. , to prevent damage, improve energy recovery efficiency, and improve driving experience
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[0048] Embodiment one:
[0049] Please refer to figure 1 , the electric vehicle braking energy recovery method of the present embodiment specifically comprises the following steps:
[0050]Step S11: Obtain the brake button signal, motor speed, current battery SOC, temperature and maximum charging power of the battery.
[0051] Specifically, the driving parameters of the electric vehicle are obtained through sampling: including the brake button signal, the motor speed n, the current SOC value of the battery, etc., and the device parameters are obtained: including the temperature of the battery, the maximum charging power of the battery P chg_max etc. Among them, the brake button signal is determined by the controller detecting the level state of the button; the motor speed, if the speed is measured by the motor Hall sensor, the sampling frequency is 62.5us, and the calculation formula of the motor speed n is:
[0052]
[0053] Among them, SixHallTimeSum is the commutation ...
Example Embodiment
[0084] Embodiment two:
[0085]Please refer to Image 6 , the electric vehicle braking energy recovery method of the present embodiment specifically includes the following steps.
[0086] Step S21: Obtain the brake handle signal, motor speed, current battery SOC, temperature and maximum charging power of the battery.
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