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Control system of vehicle-mounted charger and control method thereof

A vehicle charger and control system technology, applied in electric vehicle charging technology, battery/fuel cell control devices, charging stations, etc., can solve the problem of affecting battery life and performance, failure to charge, battery voltage and battery AC ripple detection deviation Major problems, to achieve the effect of improving the safety and life of use, accurate identification, and improving accuracy

Pending Publication Date: 2022-04-08
UNITED AUTOMOTIVE ELECTRONICS SYST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For another example, if the single-phase power grid is identified as a three-phase power grid, the BMS will cause the charger to overload and fail after the three-phase charging power is issued.
[0005] (2) The battery voltage and battery AC ripple detection deviation is large during charging
As the charging power increases, the battery voltage and battery AC ripple increase, which will affect battery life and performance, especially when the grid quality is poor, the ripple will further deteriorate
[0006] (3) The accuracy of three-phase power grid state identification is low, such as phase sequence identification error, which will lead to failure to charge or even damage the charger

Method used

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  • Control system of vehicle-mounted charger and control method thereof
  • Control system of vehicle-mounted charger and control method thereof
  • Control system of vehicle-mounted charger and control method thereof

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Embodiment Construction

[0065] The control system and control method of the on-board charger proposed by the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will be more apparent from the following description. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0066] figure 1 A block diagram of the control system of the on-board charger in this embodiment is shown. The control system of the on-board charger includes an AC grid 1 , an on-board charger 2 , a power battery 3 , a digital controller 4 , and a battery management system (BMS) 5 .

[0067] Wherein, the AC grid 1 provides AC power signals to the on-board charger 2 and the digital controller 4 . The AC power signal includes an AC voltage a...

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Abstract

The invention provides a control system of a vehicle-mounted charger and a control method thereof, the control system of the vehicle-mounted charger comprises an alternating current power grid, the vehicle-mounted charger, a power battery, a digital controller and a battery management system, the alternating current power grid provides an alternating current power supply signal; the digital controller is used for acquiring and processing an alternating current power supply signal and a direct current power supply signal converted by the vehicle-mounted charger; the battery management system sends a charging instruction to the vehicle-mounted charger according to a processing result; and the vehicle-mounted charger converts an input alternating current power supply signal into a direct current power supply signal according to the charging instruction so as to charge the power battery. By arranging the digital controller, the identification and detection accuracy of the control system of the vehicle-mounted charger can be improved, so that the use safety and the service life of the vehicle-mounted charger and the power battery are improved.

Description

technical field [0001] The invention relates to the technical field of electric vehicle control, in particular to a control system and a control method for a vehicle charger. Background technique [0002] As the core component of electric vehicles, on-board chargers undertake the heavy responsibility of supplementing energy for electric vehicles. At the same time, they also need to report the status of power grid and battery to BMS (Battery Management System, battery management system) and VCU (Vehicle Control Unit, vehicle controller). Signals such as voltage and current, BMS and VCU make corresponding charging control and vehicle control decisions based on these signals. [0003] With the diversification of AC charging and the increase of charging power, BMS and VCU need to obtain more and more charging information, and the quality requirements for information are also getting higher and higher. However, the on-board charger has insufficient processing of the high-voltage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L58/10B60L53/20B60L3/00
CPCY02T10/70Y02T10/7072Y02T90/14Y02T90/16
Inventor 唐志俊李卓强李生超纪晓泳张攀
Owner UNITED AUTOMOTIVE ELECTRONICS SYST
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