Start-up charging detection method of DC charging system, pdu and charging path

A DC charging and access technology, which is applied to battery circuit devices, charging stations, electric vehicles, etc., can solve the problems of long detection time and low detection accuracy, and achieve the effect of improving the charging experience and increasing the effective charging time

Active Publication Date: 2021-07-23
XIAN TGOOD INTELLIGENT CHARGING TECH CO LTD
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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 a starting charging detection method for a DC charging system, PDU and charging path, which can improve detection accuracy and shorten detection time

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  • Start-up charging detection method of DC charging system, pdu and charging path
  • Start-up charging detection method of DC charging system, pdu and charging path
  • Start-up charging detection method of DC charging system, pdu and charging path

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Embodiment Construction

[0078] 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.

[0079] 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 present invention relates to a DC charging system, a PDU and a method for detecting the start-up charging of a charging path. The power distribution unit includes a first relay arranged in each charging path and used for on-off control of the corresponding power module, and also includes a control module and a first optocoupler detection circuit corresponding to each charging path, the first optocoupler detection circuit includes a first optocoupler and a first current limiting device connected to the input end of the first optocoupler; and, the first optocoupler detection The input end of the circuit is connected in parallel with the output end of the corresponding power module through the first relay; the control module is used to control the opening or closing of the first relay after the corresponding power module is turned on when the charging channel is started and charged, and The health state of the first relay is determined according to the on-off of the first optocoupler. The implementation of the technical solution of the present invention can improve the detection accuracy of the health state of the relay and shorten the detection time, increase the user's effective charging time, and improve the user's charging experience.

Description

technical field [0001] The invention relates to the field of electric vehicles, in particular to a DC charging system, a PDU and a charging path detection method for starting charging. 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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L53/14B60L53/20B60L53/22B60L3/00H02J7/00
CPCG01R31/00H02J7/0036Y02T10/70Y02T10/7072Y02T90/14
Inventor 朱红磊贾奇杰王辉
Owner XIAN TGOOD INTELLIGENT CHARGING TECH CO LTD
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