Electric vehicle charging control circuit, method, device and equipment
A charging control method and technology for electric vehicles, which can be applied to battery circuit devices, electric vehicles, circuit devices, etc., and can solve the problem of high loss in anti-reverse connection circuits
Pending Publication Date: 2022-01-11
DONGFENG LIUZHOU MOTOR
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Problems solved by technology
[0004] The main purpose of the present invention is to propose an electric vehicle charging control circuit, method, device and equipment, aiming to solve the technical problem of high loss in the anti-reverse connection circuit of the vehicle charger
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[0067] In order to achieve the above object, the present invention also proposes an electric vehicle charging control method applied to the above-mentioned electric vehicle charging control circuit, referring to Figure 5 , the first embodiment of the electric vehicle charging control method is proposed, and the electric vehicle charging control method includes:
[0068] Step S10: the battery management module controls the switch unit in the pre-charging circuit to close when receiving the charging command;
[0069] Step S20: when the switch unit is closed, the battery management module detects whether the voltage value at both ends of the precharging resistor in the precharging circuit is normal;
[0070] Step S30: When the voltage value is normal, the battery management module controls the switch unit to be turned off, and controls the charging circuit between the charging circuit and the electric vehicle to be turned on, so as to charge the vehicle battery.
[0071] Furthe...
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The invention discloses an electric vehicle charging control circuit, method, device and equipment. The circuit comprises a battery management module, a pre-charging circuit and a charging circuit; when the battery management module receives a charging instruction, a switch unit in the pre-charging circuit is controlled to be closed; when the switch unit is closed, the battery management module detects whether the voltage values at the two ends of the pre-charging resistor in the pre-charging circuit are normal or not; and when the voltage value is normal, the battery management module controls the switch unit to be switched off and controls the charging circuit to be connected with a charging loop of the electric automobile so as to charge a vehicle battery. When the battery management module detects that the voltage values at the two ends of the pre-charging resistor are normal, the battery management module controls the switch unit to be switched off and controls the loop between the charging circuit and the electric vehicle to be switched on to charge the vehicle battery, and whether reverse connection exists or not can be judged according to the voltage values at the two ends of the pre-charging resistor, so the technical problem that an MOS tube or a relay needs to be additionally arranged at the input end of the vehicle-mounted charger to prevent reverse connection is solved, and the loss of the vehicle-mounted charger is reduced.
Description
technical field [0001] The invention relates to the technical field of electric vehicles, in particular to an electric vehicle charging control circuit, method, device and equipment. Background technique [0002] At present, the country is vigorously promoting clean energy. Electric vehicles are driven by power batteries and do not emit exhaust gas. They are more and more popular among people. The development of related technologies for electric vehicles is becoming more and more mature. On-board chargers are essential for electric vehicles. The charging device can effectively charge the vehicle battery, but when the charging circuit of the vehicle charger is working, if the live wire and the neutral wire at the input end are reversed, the charging circuit may be burned out. In the prior art, a MOS tube is added at the input end of the charging circuit Or a relay to prevent reverse connection, which increases the loss of the charging circuit, so how to reduce the loss of the...
Claims
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IPC IPC(8): H02J7/00H02H7/18
CPCH02J7/0034H02J7/0031H02J7/0013H02H7/18
Inventor 冯倍茂覃胤合马洁高聂明勇卢昶伯蔡大伟
Owner DONGFENG LIUZHOU MOTOR