The invention relates to a vehicle insulation resistance measuring and calculating method and system, electronic equipment and a vehicle. The measuring and calculating method comprises the following steps of: acquiring positive and negative voltage to ground for judging whether the insulation detection resistor is connected or not, determining that charging and discharging of an equivalent capacitor are not completed, and fitting the positive and negative voltage to ground for a preset number of times according to whether the insulation detection resistor is connected or not and time to obtain first, second, third and fourth functions; progressively increasing according to a preset period and calculating positive and negative electrode to-ground voltage estimated values until the difference between the next estimated value and the previous estimated value is smaller than a first preset voltage, and taking the next estimated value as positive electrode to-ground voltage stable values U1 and U1'and negative electrode to-ground voltage stable values U2 and U2 'for judging whether the insulation detection resistor is connected or not; and the insulation resistance is calculated according to the insulation detection resistors U1, U2, U1'and U2 '. The invention further provides a system, equipment and a vehicle. The problems that an existing insulation resistance measuring and calculating method is inaccurate in measuring result, long in time and low in efficiency are solved.
本发明涉及一种车辆绝缘电阻的测算方法、系统、电子设备及车辆。测算方法包括:采集绝缘检测电阻接入与否的正、负极对地电压,确定等效电容充放电未完成,根据绝缘检测电阻接入与否采集的前预设次数的正、负极对地电压与时间经拟合得第一、二、三、四函数,按照预设周期递增并计算正、负极对地电压估算值,直至后一与前一估算值之差小于第一预设电压,则以后一估算值作为绝缘检测电阻接入与否的正极对地电压稳定值U1、U1′和负极对地电压稳定值U2、U2′;根据绝缘检测电阻U1、U2、U1′和U2′计算得绝缘电阻。本发明还提供一种系统、设备和车辆。本发明解决了现有绝缘电阻测算方法存在测量结果不准确、时间长和效率低的问题。
Vehicle insulation resistance measuring and calculating method and system, electronic equipment and vehicle
一种车辆绝缘电阻的测算方法、系统、电子设备及车辆
09.05.2025
Patent
Elektronische Ressource
Chinesisch
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