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relay device

A technology of relay equipment and relays, applied in battery, secondary battery repair/maintenance, safety/protection circuits, etc., can solve problems such as increased development costs, and achieve the effect of preventing abnormal currents

Active Publication Date: 2021-02-09
AUTONETWORKS TECH LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when the two standards of DC charging are adopted at the same time, automakers have to deal with the two DC charging standards, and there is a problem that the development cost increases

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0053] figure 1 It is a block diagram showing a configuration example of the charging communication system according to Embodiment 1 of the present invention. The charging communication system according to Embodiment 1 includes a vehicle 1 such as a plug-in hybrid car or an electric car, and a charging post 2 that supplies a DC voltage to a battery 11 of the vehicle 1 via a charging cable.

[0054] One end of the charging cable is connected to the charging post 2 , and a charging gun (not shown) is provided at the other end of the charging cable. The charging cable includes two power supply cables, a communication cable, a ground wire (not shown), etc. When the charging gun is connected to the socket of the vehicle 1, the power supply line is connected to the battery 11, and the communication line is connected to the relay device 3 described later. The ground wire is connected to the reference potential such as the body. The power supply line is a wire to which the DC volta...

Embodiment approach 2

[0101] The relay device of Embodiment 2 is installed outside the vehicle, and the method of shutting off the DC voltage is different from Embodiment 1. Therefore, the above differences will be mainly described below. The other configurations and functions and effects are the same as those in Embodiment 1, and therefore corresponding parts are given the same reference numerals and detailed descriptions are omitted.

[0102] Figure 5 It is a block diagram showing a configuration example of a charging communication system according to Embodiment 2 of the present invention. Similar to Embodiment 1, vehicle 201 according to Embodiment 2 includes battery 11 , first form charging control unit 12 , first communication unit 13 , and first DC cutoff relay 14 . However, in the vehicle 201 according to the second embodiment, the relay device 203 is not mounted, and the relay device 203 is provided on the connector of the charging cable.

[0103] The relay device 203 includes a first co...

Embodiment approach 3

[0111] Embodiment 3 differs from Embodiment 1 in how the relay device cuts off the DC voltage. Therefore, the above differences will be mainly described below. The other configurations and effects are the same as those in Embodiment 1, and therefore corresponding parts are given the same reference numerals and detailed description thereof is omitted.

[0112] Figure 6 It is a block diagram showing a configuration example of a charging communication system according to Embodiment 3 of the present invention. The relay device 303 according to Embodiment 3 is provided with a backflow prevention diode 336 installed in between in the power supply line instead of the signal cut-off relay 36 . The anti-backflow diode 336 is forwardly connected from the charging pile 2 to the battery 11 to prevent the current from flowing backward from the battery 11 to the charging pile 2 .

[0113] According to the relay device 303 of Embodiment 3, although the charging pile 2 and the vehicle 301 ...

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Abstract

The relay device (3) converts and relays the mode of the control signal between the first communication unit (13) and the second communication unit (23), and the first communication unit is arranged on the vehicle (1) with the battery (11). ), and send and receive the control signal of the first mode related to charging, and the second communication part is set at the charging pile (2) that supplies DC voltage and charges the storage battery (11), and sends and receives the control signal of the second mode related to charging Signal. The relay device (3) further includes: a restricting unit that restricts power supply between the charging post (2) and the battery (11) regardless of the control on the vehicle (1) side based on the control signal; and an obtaining unit that obtains the charging post ( 2) The DC voltage supplied and the voltage of the storage battery (11); the determination unit determines whether the voltage difference between the acquired voltages is less than a threshold value; and the release unit determines that the voltage difference is less than the threshold value, and the control unit releases the limits.

Description

technical field [0001] The present invention relates to a relay device for relaying a control signal transmitted and received between a vehicle having a battery and a charging stand that supplies a DC voltage to the battery of the vehicle. Background technique [0002] A plug-in hybrid electric vehicle (PHEV: Plug-in Hybrid Electric Vehicle) using both an electric motor and an engine, and an electric vehicle (EV: Electric Vehicle) driven by an electric motor without an engine are spreading. Vehicles such as plug-in hybrid vehicles and electric vehicles include a battery that drives an electric motor, and the battery is charged using an external charging station. [0003] As a charging method for a storage battery for driving a motor, there are AC charging and DC charging. As a method of DC charging, there are CHAdeMO standard and combination (Combo) method. A charging post conforming to the CHAdeMO standard has a DC charging connector and communicates with the vehicle thro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00B60L53/14B60L53/18B60L53/62H01M10/44B60L3/04B60L3/00
CPCY02T90/16Y02T90/14B60L53/14B60L53/18H02J7/0031H02J7/04B60L3/0069H01M10/44H01M2220/20H02J7/00045H02J7/00034B60L53/62H02J7/007Y02T10/70Y02T90/12Y02T10/7072Y02E60/10H02J2310/48H02J7/00H02J7/00304B60L53/60B60L3/04
Inventor 薮内靖弘中川信之釜贺隆市
Owner AUTONETWORKS TECH LTD