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On-line detection method for DC charging system, pdu and charging path

A channel and circuit technology, applied in the field of electric vehicles, can solve the problems of low detection accuracy and long detection time, so as to improve the charging experience and increase the effective charging time

Active Publication Date: 2020-12-08
XIAN TGOOD INTELLIGENT CHARGING TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems of low detection accuracy and long detection time in the prior art, the present invention provides an online detection method for DC charging system, PDU and charging path, which can improve detection accuracy and shorten detection time

Method used

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  • On-line detection method for DC charging system, pdu and charging path
  • On-line detection method for DC charging system, pdu and charging path
  • On-line detection method for DC charging system, pdu and charging path

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Embodiment Construction

[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0056] figure 1 It is a logical structure diagram of Embodiment 1 of the DC charging system of the present invention. The DC charging system of this embodiment includes N power modules, M charging guns and a power distribution unit 10, wherein N is a natural number greater than or equal to 2, and M is greater than or equal to A natural number equal to 1. Furthermore, the power module is used to convert the direct current into the electrical energy required fo...

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Abstract

The invention relates to a DC charging system, a PDU and an online addition detection method of a charging path. The PDU comprises a control module and a first optical coupler detection circuit corresponding to each charging path; the first optical coupler detection circuit comprises a first optical coupler and a first current limiting piece connected to the input end of the first optical coupler,and the input end of the first optical coupler detection circuit is connected with the power input end of a corresponding charging gun via first and second relays; and when the first and second relays of the charging path of online addition are detected, the control module controls the first and second relays to open / close under the condition that the corresponding keeps an OFF state, and determines the health states of the first and second relays according to ON / OFF of the first optical coupler. Thus, the health states of the relays can be detected more precisely with shorter detection time,the effective charging time of a user is improved, and the charging experience of the user is enhanced.

Description

technical field [0001] The invention relates to the field of electric vehicles, in particular to an on-line detection method for a DC charging system, a PDU and a charging path. Background technique [0002] With the current rapid development of electric vehicles, charging piles have sprung up like mushrooms. In order to meet the simultaneous and efficient charging of multiple vehicles, a group charging system has been derived. In the charging system, the power distribution unit (PDU) dispatches the power modules by controlling one or more charging paths. The charging path is composed of some electronic components such as relays. These components are easily damaged, such as adhesion or drive failure. Therefore, it is necessary to detect the health status of the relays in the charging path to avoid safety problems. [0003] At present, when detecting the relays in the charging path, the method adopted is: connect an IGBT tube with a higher current resistance level on the rel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 朱红磊贾奇杰王辉
Owner XIAN TGOOD INTELLIGENT CHARGING TECH CO LTD
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