Low-voltage energy control method, system and equipment of electric vehicle and medium

Abstract

The invention discloses a low-voltage energy control method, system and equipment of an electric vehicle and a medium. The method comprises the steps that the low-voltage output power and the whole vehicle load power of the electric vehicle are obtained; wherein the low-voltage output power comprises output power of a low-voltage storage battery and high-voltage convertible low-voltage power of a power battery; according to the low-voltage output power and the whole vehicle load power, whether the electric vehicle meets the safe driving requirement is judged; when the electric vehicle meets the safe driving requirement, whether the low-voltage output power and the whole vehicle load power meet a preset balance condition is judged; and when the low-voltage output power or the whole vehicle load power does not meet the preset balance condition, a part of load of the electric vehicle is correspondingly adjusted so as to reduce the whole vehicle load power, and / or the electric vehicle is tested. The control capability of the voltage energy of the electric vehicle can be effectively improved, and the safe use performance of the electric vehicle is improved.

Description

technical field [0001] The present invention relates to the technical field of vehicle control, in particular to a low-voltage energy control method, system, equipment and medium of an electric vehicle. Background technique [0002] The starting current demand of electric vehicles is different from that of traditional vehicles, only tens of amperes of current are needed. On the contrary, due to the large number of electric appliances of the whole vehicle being turned on during driving, as well as severe braking and steering, the current will increase to Hundreds of amperes, this is the most severe state of the vehicle, if the state of the vehicle grid is in an unbalanced consumption state, the battery will not be able to meet the braking and steering problems, so the low-voltage energy of the vehicle needs to be adjusted Real-time monitoring and adjustment. [0003] At present, only the voltage is used as the judgment standard of low-voltage energy in the industry. Since th...

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Problems solved by technology

[0002] The starting current demand of electric vehicles is different from that of traditional vehicles, only tens of amperes of current are needed. On the contrary, due to the large number of electric appliances of the whole vehicle being turned on during driving, as well as severe braking and steering, the current will increase to Hundreds of amperes, this is the most severe state of the vehicle, if the state of the vehicle grid is in an unbalanced consumption state, the battery will not be able to meet the braking and steering problems, so the low-voltage energy of the vehicle needs to be adjusted Real-time monitoring and adjustment

[0003] At present, only the voltage is used as the judgment standard of low-voltage energy in the industry. Since the voltage may fluctuate instantaneously, if the voltage is too high or too low as a fault judgment, it will cause certain faults, resulting in the inability to control the low-voltage energy of the vehicle. One-to-one correspondence between the energy states, which leads to the inability to better control the low-voltage energy of the vehicle

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