Electric vehicle DC charging control guide circuit and control method

A technology of control guidance and DC charging, which is applied in the direction of electric vehicle charging technology, electric vehicles, charging stations, etc., can solve the problem of undetectable PE broken needles, reduce risks and instability, reduce the number of needles, and avoid interference Effect

Active Publication Date: 2021-06-18
STATE GRID ELECTRIC POWER RES INST +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above technical problems, the present invention provides a DC charging control guide circuit and control method for electric vehicles. By improving the existing control guide circuit, the state of the switch is controlled and the voltage change of the monitoring point is monitored at the same time, so as to improve the reliability of DC high-power charging. and timeliness; realize rapid judgment and real-time response to fault detection, and solve the problem that PE broken needle cannot be detected at present

Method used

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  • Electric vehicle DC charging control guide circuit and control method
  • Electric vehicle DC charging control guide circuit and control method
  • Electric vehicle DC charging control guide circuit and control method

Examples

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Embodiment Construction

[0045] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0046] Such as figure 1 As shown, the DC charging control guide circuit for electric vehicles includes the mutually coordinated power supply side PE terminal and vehicle side PE terminal, power supply side CC1 terminal and vehicle side CC1 terminal, power supply side CC2 terminal and vehicle side CC2 terminal, and power supply side control guidance circuit and the car side control boot circuit.

[0047]The control pilot circuit on the power supply side includes a first feedback circuit and a second feedback circuit, and the control pilot circuit on the vehicle side includes a third feedback circuit and a fourth feedback circuit.

[0048] The first feedback circuit is set between the power supp...

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Abstract

The invention discloses a direct current charging control and guide circuit for an electric vehicle, which includes a power supply side control guide circuit and a vehicle side control guide circuit. The power supply side control guide circuit includes a first feedback circuit and a second feedback circuit, and the vehicle side control guide circuit includes a first feedback circuit and a second feedback circuit. Three feedback circuits and a fourth feedback circuit. At the same time, a corresponding control method is also disclosed. The invention improves the reliability and timeliness of DC high-power charging by improving the existing control and guiding circuit, controls the switch state and monitors the voltage change of the monitoring point, realizes fast judgment and real-time response to fault detection, and solves the problem of current PE fault. The needle cannot detect the puzzle.

Description

technical field [0001] The invention relates to a direct current charging control guide circuit and a control method of an electric vehicle, belonging to the field of electric vehicle charging. Background technique [0002] High-power charging of electric vehicles can shorten the charging time, improve the charging consumption experience of car owners, and solve charging anxiety. Conductive DC high-power charging mainly increases the charging power to 350kW or above. With a single gun, it only takes 10-15 minutes to conduct conductive charging for the power battery. The focus is on high-power charging connection components, cooling technology, temperature monitoring technology, Charging communication control technology, high-power charger, etc. High-power DC charging technology and the existing 2015 version of standard charging technology (GB / T 18487.1-2015, GB / T 20234.1-2015, GB / T 20234.3-2015) are parallel technical routes, and will not be used for a long time in the futu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L53/66
CPCY02T10/70Y02T10/7072Y02T90/12Y02T90/16
Inventor 李旭玲张萱倪峰白健王伟李志刚董新生刘永东李晓强惠琪张建伟
Owner STATE GRID ELECTRIC POWER RES INST
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