Vehicle power-on method and system, and product

The invention discloses a vehicle power-on method and system and a product, and the method comprises the steps: carrying out the low-voltage power-on of a target vehicle under the condition that a power-on request of the target vehicle is received; under the condition that insulation is normal during previous power-off of the target vehicle, high-voltage power-on is conducted on the target vehicle within the first time period; the previous power-off time point of the target vehicle is before the power-on request; under the condition that insulation is abnormal when the target vehicle is powered off last time, insulation detection is carried out on the target vehicle in a second time period; after it is detected that insulation of the target vehicle is normal, high-voltage power-on is conducted on the target vehicle; wherein the first time period is smaller than the second time period.