Control method and system of bidirectional vehicle-mounted charger

A vehicle-mounted charger and control method technology, applied in electric vehicle charging technology, charging stations, battery/battery traction, etc., can solve problems such as increased complexity, logic deadlock, etc., to reduce complexity, enhance reliability, Simplify the effect of difficulty

Pending Publication Date: 2020-05-22
SHENZHEN VAPEL POWER SUPPLY TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Because the functions of AC-DC-DC and DC-DC-AC are integrated in one system at the same time, all functions share a set of hardware, and three MCUs are required to realize different module functions, so the control strategy is greatly increased. degree, and it is easy to cause logical deadlock and other problems

Method used

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  • Control method and system of bidirectional vehicle-mounted charger
  • Control method and system of bidirectional vehicle-mounted charger

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Embodiment Construction

[0026] The present invention is further described below in conjunction with accompanying drawing and embodiment:

[0027] Such as figure 1 As shown, an embodiment of the present invention provides a control method for a two-way on-board charger, including the following steps:

[0028] Step S1: In the charging mode, the PFC control module 10 identifies the input mode of the system by detecting the input voltage of the three-phase input terminal, and notifies the vehicle controller 13 of the input mode through the LLC control module 11 and the application layer interface module 12 . If AC voltage is detected on the first phase, but no AC voltage is detected on the second and third phases, it is judged that the input mode is single-phase input mode. If AC voltage is detected on the first phase, the second phase and the third phase , then it is judged that the input mode is a three-phase input mode. The PFC control module 10 informs the LLC control module 11 of the input mode th...

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Abstract

The invention discloses a control method and system for a bidirectional vehicle-mounted charger, and the method comprises the steps that a PFC control module recognizes the input mode of the system ina charging mode, and informs the vehicle control unit of the input mode through an LLC control module and an application layer interface module; the vehicle control unit sends a charging enabling instruction to the application layer interface module, the LLC control module and the PFC control module according to the input mode; the application layer interface module, the LLC control module and the PFC control module start corresponding charging operation; in the discharging mode, the vehicle control unit sets the output mode of the system according to the output load type and sends a discharging enabling instruction to the application layer interface module, the LLC control module and the PFC control module; and the application layer interface module, the LLC control module and the PFC control module start corresponding discharge operations. According to the invention, logic loopholes and hidden fault points are avoided when the system works, and the reliability of the bidirectional charger is enhanced.

Description

technical field [0001] The present invention relates to the technical field of on-board charging, in particular to a control method and system for a two-way on-board charger. Background technique [0002] At present, the common charging solutions in the field of new energy vehicles mainly use single-phase or three-phase on-board chargers for charging, and they can be relatively mature and applied in practice. However, the bidirectional charger integrating forward charging function and reverse inverter discharging function is still a new research field. Because the functions of AC-DC-DC and DC-DC-AC are integrated in one system at the same time, all functions share a set of hardware, and three MCUs are required to realize different module functions, so the control strategy is greatly increased. degree, and it is easy to cause logical deadlock and other problems. [0003] The above deficiencies need to be improved. Contents of the invention [0004] In order to overcome t...

Claims

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Application Information

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IPC IPC(8): H02J7/00H02J7/02B60L53/20B60L50/60
CPCH02J7/0068B60L53/20B60L50/60Y02T10/70Y02T10/7072Y02T90/14
Inventor 高松元吕志明
Owner SHENZHEN VAPEL POWER SUPPLY TECH
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