WO2021206211A1 - Charging adaptor that is compatible with can-plc data communication - Google Patents

Abstract

The present invention relates to a charging adaptor that is compatible with CAN-PLC data communication, and the objectives of the present invention are to allow conversion so as to be compatible regardless of the type of charging socket of an electric vehicle and charger plug provided at an electric vehicle charging station, and to provide a communication module in the charging adaptor so that communication is possible regardless of the electric vehicle communication types of CAN or PLC.

Description

CAN-PLC data communication compatible charging adapter

The present invention relates to a charging socket for an electric vehicle, and more particularly, a CAN-PLC (Controller Area Network-Power Line Communication) that enables mutual compatibility with a charger plug installed in an electric vehicle charging station and a charging socket of an electric vehicle regardless of the type of charging socket. It relates to a data communication compatible charging adapter.

In general, an electric vehicle (EV) does not use petroleum fuel and an engine, but refers to a vehicle (including all types of electric vehicles, hereinafter collectively referred to as "electric vehicle") using an electric battery and an electric motor. .

Electric vehicles, which drive a vehicle by rotating a motor with electricity accumulated in the battery, were manufactured before gasoline vehicles, but were not put to practical use due to problems such as the heavy weight of the battery and charging time. was developed

Recently, high oil prices and stricter exhaust gas regulations are accelerating the development of electric vehicles. As a result, competition over the charging infrastructure-related business following the spread of electric vehicles is rapidly developing, and the number of charging stations is expected to increase significantly.

Moreover, the infrastructure can be built so that the charging form of electric vehicles can be made not only at charging stations but also at each home.

In the case of charging devices for electric vehicles that are generally used, electric vehicle fast charging methods are mostly divided into CHADEMO and COMBO using direct current, and three-phase method using alternating current. I am using the charging method. That is, AC single-phase 5-pin, AC 3-phase 7-pin, DC car demo 10-pin, and DC combo 7-pin are used for each electric vehicle manufacturer.

As for electric vehicle chargers, there are two types of electric vehicle chargers: home charger low-speed, fast charger, and slow charger. Fast chargers can be charged in about 30 minutes.

The rapid charger converts KEPCO AC power to DC or converts renewable energy DC power to DC/DC to charge the necessary power to the battery mounted on the vehicle, and the rectifier and DC/DC converter are separated from the external charging system to charge speed is fast

The slow charger has a rectifier and a DC/DC converter built into the vehicle (On Board Charger) to generate a power change process, and the vehicle is structurally only capable of small-capacity conversion, so the charging speed is slow.

In particular, since the standard for charging electric vehicles is not unified, electric vehicles currently being mass-produced have different charging socket specifications and there is a problem in compatibility.

The charging socket is divided into three types: FAST DC (CHAdeMO), FAST DC (DC Combo type 1), and FAST AC.

All input power uses 3-phase 380AC, FAST DC uses DC 50~450V, 110A, 50kW as output, and FAST AC uses 380V, 63A, 43kW as output.

Based on a 24kWh battery, it takes 15 to 30 minutes to charge all of them, and not only the charging sockets applied to each model of electric vehicle are different, but also the communication standards are different.

For example, the communication standard of electric vehicles mainly uses CAN communication method in Japan (charger standard CHAdeMO), China (GB/T), and the United States (Tesla), and PLC communication method is mainly used in Europe (COMBO).

In the end, if a unified charger standard is not applied, even when opening a charging station, all three charging sockets, inverters, and converters must be configured in one charger. In addition, in addition to unifying charger specifications, data Since the communication protocol for the exchange must also be compatible, there is a problem in that it is difficult to build the infrastructure of the charging station and the charger.

Therefore, in order to improve the problems of the prior art, the present invention converts the charger plug installed in the electric vehicle charging station to be compatible with each other regardless of the type of the electric vehicle charging socket, and also, regardless of the communication method of the electric vehicle, CAN or PLC An object of the present invention is to provide a CAN-PLC data communication compatible charging adapter that allows a communication module to be provided in the charging adapter to enable communication.

The CAN-PLC data communication compatible charging adapter for achieving the object of the present invention is compatible with various vehicle sockets of the electric vehicle by coupling to the charging plug of the electric charging station and having a CAN-PLC communication unit for supplying charging power. In the CAN-PLC (Controller Area Network- Power Line Communication) data communication compatible charging adapter, the CAN-PLC communication unit comprises: a PLC communication unit for PLC communication through a charging connector coupling unit on the side of an electric charging station; and a CAN communication unit for CAN communication through the vehicle socket coupling unit on the electric vehicle side, wherein the charging connector coupling unit and the vehicle socket coupling unit are connected with DC power to supply charging power, and the CAN communication bus of the CAN communication unit and It is characterized in that the PLC communication unit is connected to communicate.

The PLC communication unit communicates with the charging station in a CAN communication method with the electric vehicle connected to the GB/T plug when the electric vehicle is a CAN communication method, and the CAN communication unit further includes a DC-DC converter for voltage drop, When the electric vehicle uses the PLC communication method, an EVSE controller (Electric Vehicle Supply Equipment Controller) that obtains a communication signal from the DC power line supplied from the combo socket to the GB/T plug and communicates with the charging connector coupling unit further includes characterized in that

The CAN-PLC data communication compatible charging adapter according to the present invention has the effect of mutually compatible charging regardless of the type of charger plug and charging socket installed in an electric vehicle charging station or other charging device, and the communication method of the electric vehicle is CAN or PLC Communication is possible no matter what, so it has the effect of charging both combo or GB/T type electric vehicles.

1 is a view showing the shape of a charger connector and a vehicle-side socket of a general electric vehicle charger,

2 is an overall configuration diagram of a charger equipped with an electric vehicle charging adapter for applying the present invention;

3 and 4 are front and rear configuration views of the electric vehicle charging adapter in FIG. 2;

5 and 6 are block diagrams of a CAN-PLC data communication compatible charging adapter according to an embodiment of the present invention;

7 is a detailed circuit diagram of the combo socket and the EVSE controller in FIG. 5;

8 is a configuration diagram of a GB/T type vehicle socket coupling part;

9 is an overall circuit diagram of the GB/T communication module,

10 is a configuration diagram of the PLC communication board and the CAN communication control board of the GBT communication module.

11 to 13 are circuit diagrams of each connection mode A to C of charging mode 3;

It is a circuit diagram of CAN communication module of GB/T,

14 is a schematic configuration diagram of a control steering circuit using connection mode B of charging mode 2;

15 is a schematic diagram of a general control steering circuit with connection mode B of charging mode 1;

*Explanation of symbols for main parts of the drawing*

100: charging connector 200: charging adapter

201: vehicle socket coupling part 202a: DC power socket

202b: AC power socket 203: charging connector coupling part

203a: DC power coupling pin 203b: ACC power coupling pin

250: PCL-CAN communication unit 251: PLC communication unit

252: CAN communication unit 253 EVSE controller

The features and effects of the present invention described above will become more apparent through the following detailed description in relation to the accompanying drawings, and accordingly, those of ordinary skill in the art to which the present invention pertains can easily implement the technical idea of the present invention. will be able

Since the present invention may have various changes and may have various forms, specific embodiments will be illustrated and described in detail in the text.

However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention.

A CAN-PLC compatible charging adapter for an electric vehicle according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is an overall configuration diagram of an electric vehicle charging system for implementing the present invention, a charging connector 100 fixed to a charger of an electric vehicle charging station and coupled to an end of a charging cable for moving to a vehicle, and the charging connector 100 ) coupled to the end of the electric vehicle charging adapter 200 that is compatible with various vehicle sockets of the electric vehicle and supplies charging power, and the vehicle socket coupled to the vehicle to receive charging power through the charging adapter 200 (300).

Referring to FIG. 3 , the charging adapter 200 includes a charging connector coupling part 201 for coupling with the charging connector 100 including a DC power socket 202a and an AC power socket 202b, Power supplied from the charging connector 100 is compatible with both AC or DC power.

4, a vehicle socket coupling part 203 for coupling with the vehicle socket 300 is provided at the front end of the adapter body 200, and the vehicle socket coupling part 203 is a DC power coupling pin 203a. ) and an AC power coupling pin 203b, so that the power supplied from the charging connector 100 is compatible with both AC or DC power.

5 is a block diagram of a CAN-PLC compatible charging adapter for an electric vehicle according to an embodiment of the present invention. The adapter body 200 is coupled to a charging plug of an electric charging station for communication with various charging sockets of an electric vehicle. A CAN-PLC communication unit 250 is built-in, and the CAN-PLC communication unit 250 includes a PLC communication unit 251 for PLC communication through the charging connector coupling unit 203 on the electric charging station side, and the electric vehicle side vehicle. It is composed of a CAN communication unit 252 for CAN communication through the socket coupling unit 201 .

The detailed operation of the present invention configured as described above will be described in detail as follows.

First, electric vehicle charging systems can be broadly classified according to a charging method, a connection method, and a communication and control method. Charging methods can be divided into conductive, inductive charging, and battery swapping. The electrical connection device corresponds to a connector and a fuel port that correspond to a fueling machine, and has an inlet that is mounted on an electric vehicle. do. Communication method is largely divided into CAN communication method used in China and Japan, and PLC communication method preferred in USA and Europe.

5, the CAN-PLC communication unit 250 provided in the adapter body 200 communicates with the electric charging station through the combo type charging connector coupling unit 203 of the electric charging station, and the electric vehicle side The power supplied to the vehicle socket coupling unit 201 is monitored.

If the CAN-PLC communication unit 250 is described in more detail, the signal protocol of the PCL communication unit 251 includes an AC input power supply signal, and the electric vehicle is connected to the vehicle socket coupling unit 201 through the proximity circuit. Or, it detects the detachment state and starts the control pilot (CP) function.

That is, in the control pilot function, the power supply of the electric charging system detects the plug-in state of the electric vehicle, displays the power supply ready state, determines the electric vehicle ventilation request, and converts the power of the power supply to the electric vehicle. perform the supply function.

As the electric vehicle starts receiving power through the vehicle socket coupling unit 201, the electric vehicle and the power supply device monitor whether charging is stably. This charging state continues as determined by the electric vehicle, and when the vehicle socket coupling part 201 is disconnected from the electric vehicle, it is detected.

The specific use of the charging connector coupling part 203 of the combo-type electric vehicle with reference to FIG. 7 is shown in Table 1 below.

PIN		Function
L1
Line 1	single-phase AC
N	Neutral	single-phase AC
CP	control pilot	post-insertion signaling
PP	Proximity pilot	pre-insertion signaling
PE	protective earth	full-current protective earthling system
CCS Combo1 extension adds two extra high-current DC pins underneath, and the two Alternating Current(AC) pins for Neutral and Line1 are not populated

It has short-circuit, over-voltage, over-current and over-temperature protection during charging. The CAN-Bus interface communicates messages with charge flow, interlock connections and any disconnect or error messages to the VCU (Vehicle Control Unit) via the BMS (Battery Management System).

8 is a block diagram of the GB/T type vehicle socket coupling unit 201, and FIG. 9 is an overall circuit block diagram of the GB/T communication module, and the names and functions of each unit are as follows [Table 2].

Pin	Designation	Function
S+	CAN-High	CAN Bus: High level communication
S-	CAN-Low
CC1		Connection Check 1	EV testing of the charging cable connection
CC2		Connection Check 2	EVSE testing of the charging cable connection
A+	Auxiliary Circuit +	EVSE voltage supply* for EVCC
A-	Auxiliary Circuit-	EVSE voltage supply* for EVCC

10 is a block diagram of the PLC communication board and the CAN communication control board of the GBT communication module, and enables communication through the '+C' and '-C' terminals for PLC communication and CAN communication.

The specific function of each terminal is as follows.

(1) +C : PLC Modem B CAN H

(2) -C : PLC Modem B CAN L

(3) PIN1 : GB/T Rechargeable Gun PIN1(14), Gray (0.75SQ) GB/T LOCK DI INPUT

(4) PIN2 : GB/T Rechargeable Gun PIN2(15), Black (0.75SQ) GB/T LOCK DI GND

(5) S+: GB/T charging gun S+(4) CAN, blue (0.75SQ)

(6) S-: GB/T charging gun S-(5) CAN, green (0.75SQ)

11 to 13 are circuit diagrams of each connection mode A to C of charging mode 3, and when charging mode 3 is adopted for charging an electric vehicle, connection mode A (FIG. 11), connection mode B (FIG. 12) and a general control steering circuit denoted by connection mode C (FIG. 13) is used to confirm the charging connection and to determine the rating curve parameters. This circuit consists of a control unit for power supply, contactors K1 and K2 (only one can be set), resistors R1, R2, R3 and RC, diode D1, switches S1, S2, S3, vehicle body charger and vehicle control unit. , of which the vehicle control device may be integrated into the vehicle body charger or other chargers.

Resistor RC is fixed to the vehicle plug. Switch S1 is an internal switch of the power supply. Switch S2 is the vehicle's internal switch, after the vehicle connector is fully connected with the power supply coupler and after performing a self-test, if the vehicle bone charger is foul-free and the battery is in a chargeable state, S2 is closed (when the vehicle "requests to charge" " or "Charge control"), whether the vehicle is in the "request charge" or "chargeable" state at the same time. Switch S3 is an internal normally closed switch of the vehicle plug, connected with the push button of the plug (for triggering the mechanical lock), when the button is pressed to relieve the mechanical lock function, S3 is in the blocking state at the same time. In the case of a vehicle with a charging current of 16A or less (according to the input of the configured vehicle body charger), the switch S2 may not be configured even in the control-steering circuit. The functional and control logic analysis of this appendix is based on a control steering circuit configured with switch S2, which is the same as with switch S2 normally closed.

14 is a connection configuration diagram of charging mode 2, when connection mode B of charging mode 2 is adopted for charging an electric vehicle, using a control steering circuit to confirm connection to a charging connection set and determination of parameters of rated current will perform

15 is a schematic diagram of a general control steering circuit having a connection mode B of charging mode 1, and when the position S3 is switched to a different state, the power supply device and the vehicle main body charger may perform a response operation. If the countermeasure corresponding to the switch S3 can be used as a reference, the specific countermeasure will depend on the control strategy set by the power supply device manufacturer and the vehicle manufacturer.

As described above, the CAN-PLC data communication compatible charging adapter according to the embodiment of the present invention is not limited by this embodiment, although it has been described with the embodiments and drawings limited to the electric vehicle, and the CAN communication method and the PLC communication method Of course, various modifications and variations are possible within the scope of the technical spirit of the present invention and the claims to be described below by those of ordinary skill in the art to which the present invention pertains, compatible with data communication.

Claims (6)

1. In a CAN-PLC (Controller Area Network-Power Line Communication) data communication compatible charging adapter equipped with a CAN-PLC communication unit for supplying charging power and compatible with various vehicle sockets of an electric vehicle by combining it with a charging plug of an electric charging station ,

   The CAN-PLC communication unit includes: a PLC communication unit for PLC communication through the charging connector coupling unit on the side of the electric charging station; and

   A CAN communication unit for CAN communication through the electric vehicle-side vehicle socket coupling unit; including,

   The charging connector coupling part and the vehicle socket coupling part are connected by DC power to supply charging power,

   CAN-PLC data communication compatible charging adapter, characterized in that the CAN communication bus of the CAN communication unit and the PLC communication unit are connected to communicate.
2. The method of claim 1,

   CAN-PLC data communication compatible charging adapter, characterized in that the CAN communication unit communicates with the charging station in a CAN communication method with an electric vehicle connected to the vehicle socket coupling unit when the electric vehicle is a CAN communication method.
3. 3. The method of claim 2,

   The CAN communication unit CAN-PLC data communication compatible charging adapter, characterized in that it further comprises a DC-DC converter for voltage drop.
4. 3. The method of claim 2,

   The CAN communication unit acquires a PLC signal from the DC power line supplied from the charging connector coupling unit to the vehicle socket coupling unit when the electric vehicle uses the PLC communication method and communicates with the charging connector coupling unit EVSE controller (Electric Vehicle Supply Equipment Controller) ) CAN-PLC data communication compatible charging adapter, characterized in that it is configured by including.
5. 5. The method of claim 4,

   The EVSE controller CAN-PLC data communication compatible charging adapter, characterized in that it further comprises an AC-DC converter for charging.
6. The method of claim 1

   CAN-PLC data communication compatible charging adapter, characterized in that the charging connector coupling part is a combo (COMBO) type connector, and the vehicle socket coupling part is a GB/T type connector.

Images