CN110696666B

CN110696666B - Charging control system and method for electric vehicle

Info

Publication number: CN110696666B
Application number: CN201910979963.3A
Authority: CN
Inventors: 曹学群
Original assignee: Aiways Automobile Shanghai Co Ltd
Current assignee: Aiways Automobile Shanghai Co Ltd
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2021-08-20
Anticipated expiration: 2039-10-15
Also published as: CN110696666A

Abstract

The invention discloses a charging control system and method for an electric vehicle. The charging control system includes: a converter and a controller; the converter is used for receiving the European standard signals transmitted by the European standard charging pile and converting the European standard signals into corresponding national standard signals; the European standard signal comprises a European standard CP signal, and the national standard signal comprises a national standard CP signal; determining a charging type according to the national standard CP signal, wherein the charging type comprises a slow charging type and/or a fast charging type; and the controller is used for carrying out corresponding charging control according to the national standard signal and the determined charging type. By adopting the scheme, the charging process between the European standard charging pile and the national standard electric vehicle can be realized without arranging conversion interfaces at the charging pile end and the vehicle end; in addition, the scheme can realize vehicle charging of different charging types such as fast charging type, slow charging type and the like between the European standard charging pile and the national standard electric vehicle; in addition, the scheme has a simple structure and is suitable for large-scale implementation and application.

Description

Charging control system and method for electric vehicle

Technical Field

The invention relates to the technical field of electric vehicles, in particular to a charging control system and method of an electric vehicle.

Background

The electric vehicle is a vehicle using electric energy as driving force, and along with the continuous development of science and technology and society in recent years, the electric vehicle is more and more favored by people due to the characteristics of energy conservation, environmental protection, low noise, good user experience and the like.

In order to obtain electric energy, electric vehicles are generally supplied with energy through charging piles matched with the electric vehicles. At present, the charging standards of electric vehicles produced in different countries are different. For example, electric vehicles produced in china mostly comply with national charging standards (such as GB18487 or GB27930, etc.), while electric vehicles produced in europe mostly comply with european charging standards (such as IEC61851 and ISO 15118).

However, electric vehicles produced in china cannot be matched with the european standard charging pile, so that marketing of electric vehicles produced in china to markets such as europe is hindered, and inconvenience is brought to users.

Disclosure of Invention

The present invention has been made in view of the above problems, and aims to provide a charge control system and method for an electric vehicle that overcomes or at least partially solves the above problems.

According to an aspect of the present invention, there is provided a charge control system of an electric vehicle, including:

the converter can establish communication connection with the European standard charging pile and is used for receiving the European standard signals transmitted by the European standard charging pile and converting the European standard signals into corresponding national standard signals; the European standard signals comprise European standard CP signals, and the national standard signals comprise national standard CP signals; and

determining a charging type according to the national standard CP signal; wherein the charging type comprises a slow charging type and/or a fast charging type;

and the controller is connected with the converter and is used for carrying out corresponding charging control according to the national standard signal and the determined charging type.

Optionally, the charging type is a slow charging type;

the converter is further configured to: receiving a European standard PP signal transmitted by the European standard charging pile, and converting the European standard PP signal into a corresponding national standard CC signal.

Optionally, the system further comprises a charger, and the charger is connected with the controller;

the controller is further configured to: receiving a national standard CC signal and/or a national standard CP signal transmitted by the converter, and transmitting the national standard CC signal and/or the national standard CP signal to the charger;

the charger is used for: and performing connection confirmation according to the national standard CC signal and/or the national standard CP signal transmitted by the controller, and performing vehicle power supply according to the control parameters of the controller.

Optionally, the controller is further configured to: receiving a national standard CC signal and/or a national standard CP signal transmitted by the converter, outputting a power-off instruction, and transmitting the power-off instruction to the charger;

the charger is further used for: and performing power-off processing or waiting processing according to the power-off instruction transmitted by the controller.

Optionally, the charging type is a quick charging type;

the converter is further configured to: converting a received PLC signal transmitted by the European standard charging pile into a national standard CAN message, and transmitting the national standard CAN message to the controller;

and receiving the national standard CAN message transmitted by the controller, and converting the national standard CAN message into an European standard PLC signal.

Optionally, the controller is further configured to: according to the national standard CAN message transmitted by the converter, connection confirmation is carried out;

after the connection is confirmed, generating a corresponding national standard CAN message, and transmitting the national standard CAN message to the converter; and receiving the national standard CAN message transmitted by the converter to perform charging handshake with the European standard charging pile.

Optionally, the system further includes: an electronic lock;

the electronic lock is used for carrying out charging locking in the vehicle charging process.

Optionally, the converter is further configured to: and controlling the electronic lock to perform a locking operation or an unlocking operation.

According to another aspect of the present invention, there is provided a charge control method of an electric vehicle, the method being performed on an electric vehicle side, the method including:

receiving a European standard signal transmitted by a European standard charging pile, and converting the European standard signal into a corresponding national standard signal; the European standard signals comprise European standard CP signals, and the national standard signals comprise national standard CP signals;

and performing corresponding charging control according to the national standard signal and the determined charging type.

Optionally, if the charging type is a slow charging type; said converting said euro-standard signal into a corresponding national standard signal further comprises: converting the European standard PP signals into corresponding national standard CC signals;

if the charging type is a quick charging type; said converting said euro-standard signal into a corresponding national standard signal further comprises: and converting the received PLC signal transmitted by the European standard charging pile into a national standard CAN message.

Optionally, if the charging type is a slow charging type; the method further comprises the following steps: and performing connection confirmation according to the national standard CC signal and/or the national standard CP signal, and performing vehicle power supply according to the control parameters.

Optionally, if the charging type is a slow charging type; the method further comprises the following steps: and outputting a power-off instruction according to the national standard CC signal and/or the national standard CP signal so as to carry out power-off processing or waiting processing according to the power-off instruction.

Optionally, if the charging type is a quick charging type; the method further comprises the following steps: according to the national standard CAN message, connection confirmation is carried out;

and after the connection is confirmed, generating a corresponding national standard CAN message for carrying out charging handshake with the European standard charging pile according to the national standard CAN message.

Optionally, the method further includes: and charging and locking are carried out in the vehicle charging process by utilizing the electronic lock.

According to the present invention, there is provided a charge control system and method for an electric vehicle, the charge control system comprising: a converter and a controller. The converter is used for receiving the European standard signals transmitted by the European standard charging pile and converting the European standard signals into corresponding national standard signals; the European standard signals comprise European standard CP signals; determining a charging type according to the national standard CP signal; and the controller is used for carrying out corresponding charging control according to the national standard signal and the determined charging type. By adopting the scheme, the charging process between the European standard charging pile and the national standard electric vehicle can be realized without arranging conversion interfaces at the charging pile end and the vehicle end; in addition, the scheme can realize vehicle charging of different charging types such as fast charging type, slow charging type and the like between the European standard charging pile and the national standard electric vehicle; in addition, the scheme has a simple structure and is suitable for large-scale implementation and application.

The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more comprehensible.

Drawings

Fig. 1 is a schematic structural diagram illustrating a charge control system of an electric vehicle according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram illustrating a charging control system of an electric vehicle according to a second embodiment of the present invention;

fig. 3 is a schematic structural diagram illustrating a charge control system of an electric vehicle according to a third embodiment of the present invention;

fig. 4 is a flowchart illustrating a charging control method for an electric vehicle according to a fourth embodiment of the present invention.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

Example one

Fig. 1 is a schematic structural diagram illustrating a charge control system of an electric vehicle according to an embodiment of the present invention. The electric vehicle's that this embodiment provided charge control system is located electric vehicle end, mainly used realizes that the vehicle between european standard charging pile and the national standard electric vehicle charges.

As shown in fig. 1, the charging control system mainly includes: a converter 11 and a controller 12.

The converter 11 can establish a communication connection with the european standard charging pile, and is configured to receive a european standard signal transmitted by the european standard charging pile and convert the european standard signal into a corresponding national standard signal (where the national standard signal in this embodiment refers to a signal that meets the national standard of china).

Specifically, when receiving the european standard signal transmitted by the european standard charging pile, the converter 11 located in the electric vehicle can automatically convert the european standard information into a national standard signal matched with the european standard signal. Thereby facilitating the subsequent controller 12 to perform corresponding charging control according to the national standard signal. When the European standard information is converted into a national standard signal matched with the European standard signal, the European standard information not only comprises the conversion of a parameter expression mode, but also comprises the conversion of a charging control logic, so that the European standard signal can be accurately converted into the national standard signal which can be recognized by the electric vehicle.

The european standard signal received by the converter 11 and transmitted by the european standard charging pile includes a european standard CP (control pilot) signal, and the converter 11 can convert the european standard CP signal into a corresponding national standard CP signal. So that the converted national standard signal contains the national standard CP signal.

Further, the converter 11 can determine the charging type according to the national standard CP signal. The charging type may include a fast charging type and a slow charging type. Through the determination of the charging type, the follow-up controller can be convenient to carry out charging control based on the charging type, and further the system can realize the charging of vehicles with different charging types between the European standard charging pile and the national standard electric vehicle.

Optionally, when determining the charging type, the converter 11 determines the charging type specifically according to duty ratio information included in the national standard CP signal. For example, when the duty ratio is equal to the preset duty ratio, the charging type is determined to be a fast charging type, otherwise, the charging type is determined to be a slow charging type. The preset duty ratio may be 5% ± 2%.

Further optionally, since the converter 11 is located at the electric vehicle, the electric vehicle in this embodiment is an electric vehicle conforming to national standards, so that the connection and communication modes between the converter 11 and other components in the electric vehicle conform to the national standards of china. In an actual implementation process, the converter 11 may be composed of a preset PLC communication chip and a peripheral circuit, and the present embodiment does not limit the specific connection manner of the PLC communication chip and the peripheral circuit, and a person skilled in the art may select a corresponding connection manner according to actual requirements.

And the controller 12 is used for performing corresponding charging control according to the national standard signal and the determined charging type.

In this embodiment, the controller 12 may be implemented by a charging control system (CMS) or a Battery Management System (BMS) of the electric vehicle, so as to reduce the modification of the electric vehicle, reduce the modification cost, and ensure the stability of the vehicle. Specifically, the controller 12 controls the charging of the electric vehicle in a charging control manner matching the charging type according to the national standard signal and the charging type. That is, the controller 12 can perform charging control of the vehicle in different control manners for different charging types.

Therefore, the charging control system of the electric vehicle can realize vehicle charging between the European standard charging pile and the national standard electric vehicle without arranging conversion interfaces at the charging pile end and the vehicle end; in addition, the system can realize vehicle charging of different charging types between the European standard charging pile and the national standard electric vehicle; in addition, the system has simple structure and is suitable for large-scale implementation and application.

Example two

Fig. 2 is a schematic structural diagram illustrating a charging control system of an electric vehicle according to a second embodiment of the present invention. The charging control system provided in this embodiment is directed to further optimization of the charging control system in the first embodiment. More specifically, the charging control system provided in this embodiment is mainly directed to further optimization of the first embodiment in which the charging type is a slow charging type.

As shown in fig. 2, based on the system shown in fig. 1, the charging control system provided in this embodiment further includes: a charger 21 and an electronic lock 22.

The converter 11 receives an european standard PP signal (also called PD signal) and an european standard CP signal transmitted by the european standard charging pile, and further converts the european standard CP signal into a national standard CP signal, and then the controller 11 enters a slow charging process when determining that the current charging type is a slow charging type according to the national standard CP signal.

The specific functions and implementations of the various components of the system at various stages of the slow charging process are described in detail below:

in the initial stage of slow charging:

the converter 11 is further configured to: and receiving a European standard PP signal transmitted by the European standard charging pile, and converting the European standard PP signal into a national standard CC signal.

Specifically, when the slow charging gun of the european standard charging pile is inserted into the electric vehicle in the national standard, the converter 11 can detect the signal (such as the european standard PP signal), and the converter 11 converts the european standard PP signal into a national standard cc (connection confirm) signal conforming to the current national standard through level conversion.

Further, the converter 11 transmits the international CC signal after conversion to the controller 12, and the controller 12 transmits the international CC signal to the charger (On Board Charge)21, so as to activate the charger 21 (in an alternative embodiment, the charger 21 may also be activated by a hard wire activation method), and the charger 21 performs connection confirmation; moreover, the converter 11 can still transmit the converted national standard CP signal to the controller 12, and the controller 12 transmits the national standard CP signal to the charger 21, so that the charger 21 can determine the charging current according to the CP signal.

Therefore, in the initial stage of slow charging, the converter 11 converts the european standard PP signal or the european standard PD signal into the national standard CC signal, converts the european standard CP signal into the national standard CP signal, and transmits the converted national standard CC signal and/or the national standard CP signal to the controller 12; the controller 12 receives the national standard CC signal and/or the national standard CP signal transmitted by the converter 11, and transmits the national standard CC signal and/or the national standard CP signal to the charger 21; finally, the charger 21 performs connection confirmation according to the national standard CC signal and/or the national standard CP signal transmitted by the controller 12, and performs vehicle power supply according to the control parameters of the controller 12.

In addition, in order to ensure the safety and stability of the electric vehicle in the slow charging process, the electronic lock 22 is used for charging and locking the electric vehicle in the charging process. Specifically, after the european standard charging pile completes the gun inserting operation in the national standard electric vehicle, the converter 11 can control the electronic lock to execute the locking operation. The converter 11 specifically receives a control command sent by the controller 12, and controls the electronic lock to perform a locking operation.

In the slow charging middle period:

the controller 12 generates corresponding charging management parameters (such as charging current and charging voltage) according to the parameter information of the electric vehicle battery, etc., and manages the charging management parameters, so that the slow charging process of the electric vehicle is performed by the charger 22 according to the charging management parameters.

At the end of slow charging:

when a slow charging end signal is detected (e.g., a battery is full, an electrical signal is pulled out of a gun, a charging fault, an external charging device is powered off, etc.), the converter 11 can further receive a european standard PP signal and/or a european standard CP signal, and then convert the european standard PP signal and/or the european standard CP signal into a national standard CC signal and a national standard CP signal, respectively. And further passes the converted national standard CC signal and the national standard CP signal to the controller 12.

And the controller 12 receives the national standard CC signal and/or the national standard CP signal transmitted by the converter 11, outputs a power-off command, and transmits the power-off command to the charger 21. The charger 21 can thus perform power-off processing or standby processing according to the power-off command transmitted by the controller 12.

Meanwhile, the controller 12 sends an unlocking instruction, and transmits the unlocking instruction to the converter, and the converter controls the electronic lock to execute an unlocking operation. Thus, the converter can control the electronic lock to perform a locking operation or an unlocking operation.

Therefore, the charging control system of the electric vehicle provided by the implementation does not need to arrange conversion interfaces at the charging pile end and the vehicle end, and can realize slow charging between the European standard charging pile and the national standard electric vehicle; moreover, the safety and the stability of the vehicle and the charging pile in the slow charging process are guaranteed through the locking operation or the unlocking operation of the electronic lock.

EXAMPLE III

Fig. 3 shows a schematic structural diagram of a charging control system of an electric vehicle according to a third embodiment of the present invention. The charging control system provided in this embodiment is directed to further optimization of the charging control system in the first embodiment. More specifically, the charging control system provided in this embodiment is mainly directed to further optimization of the first embodiment in which the charging type is a fast charging type.

The converter 11 receives the european standard PP signal and the european standard CP signal transmitted by the european standard charging pile, and then can convert the european standard CP signal into a national standard CP signal, and then the controller 11 enters a quick charging process when determining that the current charging type is the quick charging type according to the national standard CP signal.

The specific functions and embodiments of the various parts of the system at various stages of the rapid charging process will be described in detail below:

and (3) at the initial stage of quick charging:

in the connection confirmation process, firstly, the converter 11 converts the received european standard PLC signal transmitted by the european standard charging pile into a national standard CAN message, and transmits the national standard CAN message to the controller 12, so that the controller 12 performs connection confirmation according to the national standard CAN message transmitted by the converter 11.

After the connection confirmation is completed, a handshaking process between the electric vehicle and the euro-standard charging pile is further performed. In the process of handshaking, the controller 12 generates a corresponding national standard CAN message and transmits the national standard CAN message to the converter, the converter 11 converts the received national standard CAN message transmitted by the controller 12 into a corresponding European standard PLC signal, and then the European standard PLC signal is transmitted to the European standard charging pile to enable the European standard charging pile to perform handshaking confirmation with the electric vehicle. The national standard quick charging CAN message contains parameter information required by a handshaking process, such as charging voltage, charging current and the like.

In addition, in the handshaking process, the converter 11 CAN also receive the european standard PLC signal transmitted by the european standard charging pile, convert the european standard PLC signal into a national standard CAN message, and then the controller 12 receives the national standard CAN message transmitted by the converter 11 to perform charging handshaking with the european standard charging pile.

Further, in order to guarantee the safety of the charging process and the normal operation of the charging process, the electronic lock 31 is used for charging and locking the vehicle in the charging process. Specifically, after the charging handshake between the euro-standard charging pile and the electric vehicle is completed, the converter 11 can control the electronic lock 31 to perform the locking operation. The converter 11 specifically receives a control command sent by the controller 12, and controls the electronic lock to perform a locking operation.

In the middle period of quick charging:

optionally, after the charge handshake is completed, in order to further ensure the charge safety and stability in the fast charge process, in this embodiment, operations such as insulation detection, voltage release and/or pre-charge are further performed according to a corresponding euro standard. The embodiment does not limit the specific insulation detection, voltage release and/or pre-charge modes, and those skilled in the art may select the corresponding mode according to the actual application scenario.

Further, after the operations of charging handshake completion, insulation detection, voltage release and/or pre-charging are completed, a main process of vehicle fast charging is executed: that is, the national standard CAN message generated by the controller 12 is first transmitted to the converter 11, and the converter 11 converts the national standard CAN message into a corresponding european standard PLC signal. When the european standard PLC signal is generated, the converter 11 converts the signal into the european standard PLC signal according to the corresponding fast charge control rule, the fast charge parameter, and the like. And then the generated European standard PLC signal is transmitted to the European standard charging pile, the European standard charging pile can quickly and accurately identify the received European standard PLC signal, and the electric vehicle is quickly charged according to the charging parameters, the charging rules and the like in the signal.

Meanwhile, the charging pile of the European standard can generate corresponding charging information of the European standard in the charging process, and the charging information of the European standard is transmitted to the converter 11 in the form of a PLC signal. The converter 11 CAN convert the european standard PLC signal into a national standard CAN message of a corresponding symbol chinese national standard charging rule, and then transmit the national standard CAN message to the controller 12.

At the end of the quick charging:

when a fast charge end signal (such as a full battery, a charging fault, a power failure of an external charging device, etc.) is detected, the converter 11 converts the received european standard PLC signal into a national standard CAN message and transmits the national standard CAN message to the controller 12.

And the controller 12 receives the national standard CAN message of the converter 11, outputs a power-off instruction and transmits the power-off instruction to the charger 21. The charger 21 can thus perform power-off processing or standby processing according to the power-off command transmitted by the controller 12.

Meanwhile, the controller 12 issues an unlocking command and transmits the unlocking command to the converter 11, and the converter 11 controls the electronic lock to perform an unlocking operation. Thus, the converter 11 can control the electronic lock to perform a locking operation or an unlocking operation.

Therefore, in the whole quick charging process, the converter 11 is used for converting the received European standard PLC signals transmitted by the European standard charging pile into national standard CAN messages and transmitting the national standard CAN messages to the controller 12; and receiving the national standard CAN message transmitted by the controller, and converting the national standard CAN message into an European standard PLC signal.

Therefore, the charging control system of the electric vehicle provided by the implementation does not need to arrange conversion interfaces at the charging pile end and the vehicle end, and can realize quick charging between the European standard charging pile and the national standard electric vehicle; moreover, the safety and the stability of the vehicle and the charging pile in the quick charging process are guaranteed through the locking operation or the unlocking operation of the electronic lock.

Example four

Fig. 4 is a flowchart illustrating a charging control method for an electric vehicle according to a fourth embodiment of the present invention. The charging control method of the electric vehicle provided by the present embodiment is executed on the electric vehicle side.

As shown in fig. 4, the method includes:

step S410, receiving a European standard signal transmitted by a European standard charging pile, and converting the European standard signal into a corresponding national standard signal; the European standard signal comprises a European standard CP signal, and the national standard signal comprises a national standard CP signal.

Step S420, determining a charging type according to the national standard CP signal; wherein the charging type comprises a slow charging type and/or a fast charging type.

And step S430, performing corresponding charging control according to the national standard signal and the determined charging type.

The specific implementation process of each step in this embodiment may be described with reference to corresponding parts in embodiment one, embodiment two, and/or embodiment three, and this embodiment is not described herein again.

Therefore, the charging control method of the electric vehicle can realize vehicle charging between the European standard charging pile and the national standard electric vehicle without arranging conversion interfaces at the charging pile end and the vehicle end; in addition, the method can realize vehicle charging of different charging types between the European standard charging pile and the national standard electric vehicle; in addition, the implementation process of the method is simple and easy, and the method is suitable for large-scale implementation and application.

In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.

Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.

It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.

Claims

1. A charge control system of an electric vehicle, characterized by comprising:

the controller is connected with the converter and is used for carrying out corresponding charging control according to the national standard signal and the determined charging type;

if the determined charging type is a slow charging type, the system further comprises a charger, and the charger is connected with the controller;

the converter receives the European standard PP signals transmitted by the European standard charging pile, and converts the European standard PP signals into corresponding national standard CC signals through level conversion; and the converter transmits the converted national standard CC signals to the controller, and the controller transmits the national standard CC signals to the charger, so that the charger is activated and the charger performs connection confirmation.

2. The system of claim 1,

the controller is further configured to: receiving a national standard CP signal transmitted by the converter, and transmitting the national standard CP signal to the charger;

the charger is used for: and supplying power to the vehicle according to the control parameters of the controller.

3. The system of claim 2, wherein the controller is further configured to: receiving a national standard CC signal and a national standard CP signal transmitted by the converter, outputting a power-off instruction, and transmitting the power-off instruction to the charger;

4. The system of claim 1, wherein if the charging type is a fast charging type;

5. The system of claim 4, wherein the controller is further configured to: according to the national standard CAN message transmitted by the converter, connection confirmation is carried out;

6. The system of claim 1, further comprising: an electronic lock;

7. The system of claim 6, wherein the converter is further configured to: and controlling the electronic lock to perform a locking operation or an unlocking operation.

8. A charge control method of an electric vehicle, characterized in that the method is performed on an electric vehicle side, the method comprising:

performing corresponding charging control according to the national standard signal and the determined charging type;

if the determined charging type is a slow charging type, receiving an European standard PP signal transmitted by an European standard charging pile, and converting the European standard PP signal into a corresponding national standard CC signal through level conversion; and transmitting the converted national standard CC signals to a controller, and transmitting the national standard CC signals to a charger by the controller, so that the charger is activated and connection confirmation is carried out by the charger.

9. The method of claim 8,