| 摘要 |
This invention provides a method and a device for measuring and calculating the insulation resistance of a high voltage power management system in a hybrid power vehicle, which are designed to effectively measure the insulation resistance; said method and device for measuring the insulation resistance of a high voltage power management system in a hybrid power vehicle comprising a central process unit circuit, a battery-voltage-balance detection unit and an insulation resistance detection unit. The voltage signal outputted by the battery-voltage-balance detection unit is assessed by the central process unit circuit; the insulation-resistance detection unit is controlled by the central process unit circuit to start up when voltage is slightly out of balance, the signal detected by the insulation resistance detection unit is transmitted to the central process unit circuit, and the signal is transmitted to the battery management system by the central process unit circuit via CAN bus. The present invention not only is capable of measuring the total voltage of the battery with high precision and monitoring the real-time insulation state, but also is capable of effectively measuring the insulation resistance.
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