Abstract: The present disclosure relates to a method and device for controlling vehicle air conditioner, and a vehicle on-board controller. The vehicle on-board controller acquires the target command, the target command is generated and sent by the terminal at the target time according to the target pre-control strategy. The target pre-control strategy is generated according to the key data and confirmed by the user. Therefore, the vehicle on-board controller can control the vehicle on-board battery to provide the target input power for the vehicle air conditioner within the preset length of time according to the target command, so that the vehicle air conditioner may precool or preheat for the preset length of time from the target time.

Abstract: The present disclosure relates to a charging control method, system, device, an on-board charging module and a storage. The charging control method includes: acquiring a working voltage of a voltage converter on a condition that an output voltage of an electric generator is greater than a rated voltage of a battery module, the battery module includes a lead-acid battery and a lithium battery, the rated voltage of the battery module is a sum of a rated voltage of the lead-acid battery and a rated voltage of the lithium battery; determining working parameters of the lead-acid battery according to the working voltage of the voltage converter; and outputting an adjustment signal to the voltage converter according to the working parameters of the lead-acid battery, the adjustment signal is configured to instruct the voltage converter to adjust a voltage output to the lead-acid battery.

Abstract: The present disclosure relates to a battery low-temperature heating and charging system, a vehicle-mounted air conditioning system and a vehicle. The battery low-temperature heating and charging system includes: a heating module, a switching module, a battery module, a power generation module, a temperature sensor, a current sensor, and a battery management system. The battery management system is respectively connected to the temperature sensor, the current sensor, the switching module and the power generation module. The current sensor is arranged between the battery module and the power generation module, and the heating module is connected to the switching module.

Abstract: The present disclosure relates to a charging device. By providing a charge-enabled pin and an engage-enabled pin with different lengths in the charging interface of the charging device, the engage-enabled pin is firstly in contact with a battery when charging. At this time, a charging management circuit controls an LLC half-bridge resonant power supply to soft start. A third end of the charging management circuit outputs a signal to drive a first switch to be turned on, and the output end of the LLC half-bridge resonant power supply charges the battery, and charging soft start and zero-voltage connection are achieved. During the unplugging process, the charge-enabled pin is firstly removed from the battery, and zero-current disconnection can be achieved when unplugging the other pins of the charging interface.

Abstract: The present disclosure relates to an overvoltage protection circuit and a charging device. A voltage applied to a PFC power supply on an input side is collected through an input voltage sampling circuit and an amplifier circuit, and a data processing capability of a charging management circuit is used to determine whether the applied voltage exceeds a preset voltage threshold. The preset voltage threshold refers to a voltage that is not greater than a minimum withstand voltage of an input device of the charger. The power factor correction power supply is controlled to operate to charge the battery to be charged when it is determined that the voltage applied does not exceed the preset voltage threshold, to prevent damage to the input device due to a connection to two phases of voltage.