WO2015043247A1

WO2015043247A1 - Authentication method for vehicle-mounted charging device and corresponding device

Info

Publication number: WO2015043247A1
Application number: PCT/CN2014/080204
Authority: WO
Inventors: 朱李; 朱进国; 刘俊强; 赵勇; 高峰
Original assignee: 中兴通讯股份有限公司
Priority date: 2013-09-27
Filing date: 2014-06-18
Publication date: 2015-04-02
Also published as: CN104518529A

Abstract

An authentication method for a vehicle-mounted charging device and a corresponding device, which are applied to the authentication when a vehicle-mounted charging device which is provided with a user card accesses a charging station serving network. The method comprises: reading, by a vehicle-mounted charging device, a user identity identifier and a user certificate from a user card; establishing a wireless link with a wireless charging pile, sending an authentication request to a device manager through the wireless charging pile, and carrying the user identity identifier, the user certificate and device information about the vehicle-mounted charging device; and after the authentication of the device manager of a serving network of the user identity identifier, the user certificate and the device information about the vehicle-mounted charging device, and after it is judged that the vehicle-mounted charging device matches the wireless charging pile, returning an authentication success response. The solution can effectively improve the security of wireless charging, reduce the accident rate and prevent electricity theft.

Description

Method for authenticating vehicle charging device and corresponding device

The invention relates to the technical field of charging an in-vehicle charging device to a charging station service network, in particular to an authentication method and a corresponding device for an in-vehicle charging device to a charging station service network in an electric vehicle.

Background technique

The growing number of cars places high demands on oil and natural gas-based energy, while petrochemical energy is increasingly exhausted, and oil prices will remain high in the long run. At the same time, the air pollution caused by automobile exhaust is becoming more and more serious. The electric vehicle is powered by the vehicle power supply and drives the wheels with a motor. Electric vehicles are widely optimistic due to their advantages such as energy saving, environmental protection and low noise. However, the development of electric vehicles still faces many technical problems. The development of charging technology and the deployment of charging stations are important factors. Battery charging technology is divided into wired charging and wireless charging. For wired charging, the operation mode is similar to that of the existing gas station, and it needs to be manually operated. The disadvantages of this method are obvious. For example, although it is safe with strict design specifications, the charging port is under high voltage and high current impact. Easy to fire, causing the device to age; Charging interface parts are prone to dust, rain, smoke, soot, etc. Monitoring and maintenance troubles; From the daily experience, the damage rate of high-power sockets is very high, and the sockets of charging stations need to be plugged and unplugged frequently. The problem will be more serious. The wireless charging technology is a technology that transfers electric energy in the air between the charger and the device by electromagnetic induction or magnetic resonance technology, so that the current flows to charge the battery. Such a wireless charging method is effectively applied to a portable communication device requiring a large-capacity battery, an electric vehicle, etc., and since the connection point is buried in the ground, there is almost no risk of electric leakage, and the problem of poor connection in the wired charging method can be prevented. Wireless charging can be unattended, no need to do it, fully automatic operation, safe and reliable; can achieve common charge, improve battery life and vehicle value after long-term use; medium power charging, low pressure on the grid, convenient parking The charging device is widely installed in the field and garage.

In recent years, the wireless charging core technology has become more and more mature, the wireless charging efficiency can exceed 90%, the wireless charging power can reach 30kw, and the wireless charging distance can reach the meter level. However, how to solve the matching compatibility between the in-vehicle equipment and the wireless charging pile, in order to improve the safety of charging and avoid accidents, How to manage the in-vehicle charging device and avoid the problem of illegal users and car charging equipment stealing electricity is still a problem faced by the wireless charging industry.

Summary of the invention

The technical problem to be solved by the embodiments of the present invention is to provide an authentication method for an in-vehicle charging device and a corresponding in-vehicle charging device and device manager to improve the security of wireless charging and prevent theft of electricity.

In order to solve the above problem, an embodiment of the present invention provides an in-vehicle charging device authentication method, which is applied to an in-vehicle charging device equipped with a user card, and the method includes:

The in-vehicle charging device reads the user identity and the user certificate from the user card;

Establishing a wireless link between the in-vehicle charging device and the wireless charging post, and sending an authentication request to the device manager through the wireless charging stub, carrying the user identity, the user certificate, and the device information of the in-vehicle charging device;

The in-vehicle charging device receives an authentication port returned by the device manager through the wireless charging station.

Optionally,

After establishing a wireless link with the wireless charging stub, before sending an authentication request to the device manager, the method further includes:

The certificate-based mutual authentication is performed between the wireless charging stub and the device manager, and after the authentication establishes a secure connection, the authentication request is sent again, for example, the authentication fails, and the authentication request is not sent.

Optionally,

The received authentication response is a successful authentication response, and thereafter, the method further includes: starting a charging process with the wireless charging post; or

The authentication request sent to the device manager further carries information for requesting the certificate from the device manager. After receiving the authentication success response, the method further includes: verifying, for example, verifying the device manager certificate carried in the authentication success response. Through, the charging process with the wireless charging post is initiated.

An embodiment of the present invention further provides a method for authenticating an in-vehicle charging device, which is applied to a device manager of a charging station service network, where the device manager is configured to manage a wireless charging in the service network. Electric pile, the method includes:

The device manager receives an authentication request sent by the in-vehicle charging device through a wireless charging station that is currently connected thereto, where the authentication request carries a user identity, a user certificate, device information of the in-vehicle charging device, and wireless of the wireless charging station Charging pile identification;

If the verification of the user certificate is passed, determining that the user identity, the device information of the in-vehicle charging device, and the wireless charging post identifier are valid, and determining the wireless according to the device information of the in-vehicle charging device and the wireless charging post identifier. The charging post is matched with the in-vehicle charging device, and an authentication success response is sent to the in-vehicle charging device through the wireless charging post.

Optionally,

Before receiving the authentication request, the method further includes:

A certificate-based mutual authentication is performed between the wireless charging stub and the in-vehicle charging device, and a secure connection is established after the authentication is passed.

Optionally,

The received authentication request further carries information requesting the device manager certificate, and then carries the device manager certificate in the sent authentication success response.

Optionally,

An authentication failure response is sent to the in-vehicle charging device via the wireless charging post if any of the following occurs:

The verification of the user certificate fails;

Any one of the user identity, the device information of the in-vehicle charging device, and the wireless charging post identifier is invalid;

The wireless charging post and the in-vehicle charging device do not match.

Correspondingly, the embodiment of the present invention further provides an in-vehicle charging device, including a battery pack, a charging module, a control module, and a wireless communication module, and a structure for installing a user identification card, where: the control module includes:

An information reading unit, configured to read the user identity and the user certificate from the user card; the first authentication unit is configured to send the device to the service network through the currently connected wireless charging pile And sending an authentication request, carrying the user identity, the user certificate, and device information of the in-vehicle charging device; and receiving an authentication response returned by the device manager through the wireless charging station.

Optionally,

The control module further includes:

a second authentication unit, configured to perform certificate-based mutual authentication between the wireless charging stub and the device manager after the wireless communication module establishes a wireless link with the wireless charging station, after the authentication establishes a secure connection And then notifying the first authentication unit to send the authentication request.

Optionally,

After the authentication response received by the first authentication unit is a successful authentication response, the charging process between the wireless charging station and the wireless charging station is initiated; or

The authentication request sent by the first authentication unit to the device manager further carries information for requesting the certificate from the device manager; after receiving the successful authentication response, the device manager certificate carried in the device is verified, for example, if the verification is passed, A charging process with the wireless charging post is initiated.

Correspondingly, an embodiment of the present invention further provides a device manager in a charging station service network, where the service network further includes a wireless charging stub, and the device manager includes a device database and a charging control module, where:

The device database stores the wireless charging identifier of the wireless charging station in the charging station and the device information of the matched in-vehicle charging device;

The charging control module includes:

a receiving unit, configured to receive an authentication request sent by the in-vehicle charging device through a wireless charging station that is currently connected thereto, where the authentication request carries a user identity, a user certificate, device information of the in-vehicle charging device, and wireless of the wireless charging station Charging pile identification;

a first authentication unit, configured to determine, by the verification of the user certificate, that the user identity, the device information of the in-vehicle charging device, and the wireless charging post identifier are valid, and according to the device information of the in-vehicle charging device and the wireless device The charging post identifier determines that the wireless charging post and the in-vehicle charging device match, and sends an authentication success response to the in-vehicle charging device through the wireless charging post. Optionally,

The authentication unit transmits an authentication failure response to the in-vehicle charging device through the wireless charging post when any of the following occurs:

The verification of the user certificate fails;

The wireless charging post and the in-vehicle charging device do not match.

Optionally,

The charging control module further includes:

And a second authentication unit, configured to perform certificate-based mutual authentication between the wireless charging stub and the in-vehicle charging device, and establish a secure connection after the authentication is passed. The above scheme verifies the compatibility between the in-vehicle charging device and the wireless charging post by authenticating the user, the user identification, etc., can effectively improve the safety of the wireless charging, reduce the accident rate, and prevent theft. BRIEF abstract

1 is a schematic structural diagram of a service network system according to an embodiment of the present invention;

2 is a signaling flowchart of an in-vehicle charging device and a service network authentication according to an embodiment of the present invention; FIG. 3 is a block diagram of an in-vehicle charging device according to an embodiment of the present invention;

4 is a block diagram of a device manager in accordance with an embodiment of the present invention.

Preferred embodiment of the invention

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.

Embodiment 1

FIG. 1 is a schematic structural diagram of a wireless charging access authentication system according to this embodiment. As shown, the package Includes:

The in-vehicle charging device 101, such as an in-vehicle charging device on an electric car, may include a battery pack, a charging module, a control module, a wireless communication module, and a display module. The in-vehicle charging device of the embodiment has the unique device identification in the world, and can be allocated by the manufacturer of the device when the device leaves the factory, and is fixed for life. The in-vehicle charging device may also store authentication data, such as a certificate issued by the pre-configured authentication center 105.

The user card 102 is used to uniquely identify the user identity, including the identity information of the user, including the user ID and the like. The user identification card also stores authentication data, such as a certificate issued by the pre-configured authentication center 105, for the network to authenticate the user or mutual authentication between the network and the user. The user identification card and the in-vehicle charging device can be separated. One user identification card can be used in multiple in-vehicle charging devices, and one in-vehicle charging device can also use multiple user identification cards to achieve unified charging.

The wireless charging station 103 is for wirelessly charging the in-vehicle charging device 101. The identification of the wireless charging station is stored in the device manager. The communication module is integrated on the wireless charging station. The communication module can use short-range wireless communication technologies such as WIFI, Bluetooth or Zigbee.

The device manager 104 controls all the wireless charging piles and other devices in the charging system, and stores parameter information such as the identifier and model of all the wireless charging piles in the charging system. Device Manager You can use wireless communication technology to communicate with these devices, or you can use wired communication technology. The Device Manager can locally authenticate the on-board charging device and the wireless charging station and verify that they match. It is also possible to communicate with the certification center 105, requesting the certification center to authenticate the in-vehicle charging device and the user. Device Manager also supports local billing.

The Certification Authority 105 (abbreviated as CA) is the issuing authority of the certificate and is the core of the PKI (Public Key Infrastructure). The CA is the authority responsible for issuing certificates, certificates, and managing issued certificates. It has policies and specific steps to verify, identify, and sign user certificates to ensure the identity of the certificate holder and the ownership of the public key. The main functions of the Certification Authority include: issuance of certificates, renewal of certificates, inquiry of certificates, invalidation of certificates, archiving of certificates, etc.

The CA also has a certificate (with a public key) and a private key. The public user on the network trusts the CA by verifying the signature of the CA, and anyone can obtain the CA's certificate (including the public key) to verify the certificate it issued. If the user wants to get a certificate of their own, they should first submit it to the CA. Application. After the CA identifies the applicant's identity, it assigns a public key to him, binds the public key to the applicant's identity information and signs it, and then forms a certificate for the applicant. If a user wants to authenticate the authenticity of a certificate provided by another user, the CA's public key is used to verify the signature on that certificate. The CA can also be queried in real time to see if the certificate exists in the certificate store and whether the certificate is currently valid. Once the verification is passed, the certificate is considered valid; when the certificate is valid, the other user is considered to be a trusted user.

2 is a flow chart of access authentication of the in-vehicle charging device of the embodiment, including:

Step 201: Perform pre-configuration of the certificate in the in-vehicle charging device and the user card.

Step 202: The in-vehicle charging device establishes a connection with the user card, and the in-vehicle charging device acquires information in the user card, including the user identity, the user certificate, and the like.

Step 203: Establish a wireless link between the in-vehicle charging device and the wireless charging post;

Step 204: The in-vehicle charging device performs mutual authentication based on the certificate between the wireless charging pile and the device manager, and establishes a secure connection;

Step 205: The in-vehicle charging device sends an authentication request to the wireless charging station, carrying the device information of the in-vehicle charging device, the user identity, the user certificate, and the information requesting the device manager certificate. The device information of the in-vehicle charging device may include the device of the in-vehicle charging device. Identification and/or device parameters, etc., the device parameters may be parameters such as voltage, power, and the like. The device model or device parameters can be used by the device manager to determine if the wireless charging station and the car charging device match.

Step 206: The wireless charging station adds its own wireless charging station identifier to the authentication request, and sends the authentication request to the device manager.

Step 207: The device manager verifies the user certificate in the authentication request, and determines that the wireless charging station identifier, the device information of the in-vehicle charging device, and the user identity in the authentication request are valid, according to the wireless charging pile identifier and the vehicle charging device. The device information determines whether the wireless charging pile and the in-vehicle charging device match, and it is assumed that the matching can be performed. The matching between the two indicates that the wireless charging pile is compatible with the in-vehicle charging device, and can be charged; the identification can also save the legal in-vehicle charging device may have Device information such as device model, etc. Based on the saved information, it can be determined whether the wireless charging post identifier and the device information of the in-vehicle charging device are valid.

The device manager can also save the encoding rule of the user identity, and determine whether the user identity is valid based on the encoding rule, or the device manager can also query the CA for the valid '1' of the user identity.

The device manager's device database stores device information of the in-vehicle charging device that the wireless charging post can match, such as the wireless charging post identifier of each wireless charging pile and the model of the in-vehicle charging device that the wireless charging post can match (also Is the correspondence of device parameters). After receiving the authentication request and obtaining the device information of the wireless charging post identifier and the in-vehicle charging device, it can be determined whether the wireless charging post and the in-vehicle charging device match.

Step 208: The device manager sends an authentication success response to the wireless charging stub, and carries the device manager certificate.

Step 209: The wireless charging pile forwards the authentication success response to the in-vehicle charging device.

Step 210: The verification of the device manager certificate by the in-vehicle charging device, if passed, initiates a charging process with the wireless charging post.

If the device manager in step 207 generates an authentication failure response to the in-vehicle charging device via the wireless charging station when any of the following occurs:

The verification of the user certificate fails;

The wireless charging post and the in-vehicle charging device do not match.

The reason for the failure can be carried in the authentication failure response.

In addition, it should be noted that the above authentication request and authentication response may be identical to other names, such as an access request, an access response, or a charging request, a charging response, and the like.

Accordingly, as shown in FIG. 3, the embodiment further provides an in-vehicle charging device, including a battery pack 21, a charging module 22, a control module 23, a wireless communication module 24, a display module 25, and a user card. Slot 26, where:

The control module 23 includes:

The information reading unit 231 is configured to read the user identity and the user certificate from the user card. The first authentication unit 232 is configured to send an authentication request to the device manager of the service network by using the currently connected wireless charging stub. Determining a user identity, a user certificate, and device information of the in-vehicle charging device; and receiving an authentication response returned by the device manager through the wireless charging station.

Optionally,

The control module further includes: a second authentication unit, configured to perform mutual certificate-based mutual authentication between the wireless charging stub and the device manager after the wireless communication module establishes a wireless link with the wireless charging station, After the authentication establishes a secure connection, the first authentication unit is notified to send the authentication request.

Optionally,

Correspondingly, as shown in FIG. 4, the embodiment further provides a device manager in a charging station service network, where the device manager includes a device database 31 and a charging control module 33, wherein: the device database 31 Storing the wireless charging identifier of the wireless charging station in the charging station and the device information of the matched in-vehicle charging device;

The charging control module 33 includes:

The receiving unit 331 is configured to receive an authentication request sent by the in-vehicle charging device through the wireless charging station that is currently connected thereto, where the authentication request carries a user identity, a user certificate, device information of the in-vehicle charging device, and the wireless charging pile Wireless charging post identification;

The first authentication unit 332 is configured to determine, by using the verification of the user certificate, the user The identification, the device information of the in-vehicle charging device, and the wireless charging post are identified as valid, and when the wireless charging post and the in-vehicle charging device are determined to be matched according to the device information of the in-vehicle charging device and the wireless charging post identifier, The wireless charging station transmits an authentication success response to the in-vehicle charging device. When the received authentication request carries a request for the device manager certificate, the device manager certificate is carried in the authentication success response.

Optionally,

The verification of the user certificate fails;

The wireless charging post and the in-vehicle charging device do not match.

Optionally,

The charging control module further includes: a second authentication unit, configured to perform certificate-based mutual authentication between the wireless charging station and the in-vehicle charging device, and establish a secure connection after the authentication is passed.

Embodiment 2

The flow of this embodiment is basically the same as that of the first embodiment. The difference is that only the device manager performs one-way authentication to the user, and the in-vehicle charging device does not authenticate the device manager.

The specific differences in the process are reflected in:

The authentication request sent by the in-vehicle charging device to the wireless charging station in step 205 is to carry information for requesting the certificate from the device manager;

In step 208, the device manager certificate does not carry the device manager certificate in the authentication success response sent to the wireless charging station;

In step 210, the in-vehicle charging device does not verify the device manager certificate.

Mutual authentication between device manager and in-vehicle charging device can also be simplified to device manager pair One-way authentication of the in-vehicle charging device, or cancellation of mutual authentication between the two.

Embodiment 3

The flow of this embodiment is basically the same as that of the first embodiment. The difference is that the certificate of the in-vehicle charging device is not preset, but is downloaded from the CA during the authentication process.

The specific differences in the process are reflected in:

In step 201, the in-vehicle charging device does not perform pre-configuration of the certificate;

In step 201, the in-vehicle charging device does not verify the device manager certificate.

Between steps 203 and 204, the following steps are added: The in-vehicle charging device downloads the certificate. The car charging device can download the certificate from the CA, or download the certificate from other certificate management related network elements.

One of ordinary skill in the art will appreciate that all or a portion of the above steps may be accomplished by a program instructing the associated hardware, such as a read-only memory, a magnetic disk, or an optical disk. Optionally, all or part of the steps of the foregoing embodiments may also be implemented by using one or more integrated circuits. Accordingly, each module/unit in the foregoing embodiment may be implemented in the form of hardware, or may use software functions. The form of the module is implemented. The invention is not limited to any specific form of combination of hardware and software.

The above is only an alternative embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Industrial applicability

The technical solution of the present application verifies the compatibility between the in-vehicle charging device and the wireless charging pile by authenticating the user, the user identification, etc., can effectively improve the safety of the wireless charging, reduce the accident rate, and prevent theft of electricity, so The invention has strong industrial applicability.

Claims

claims

1. An authentication method for vehicle charging equipment, applied to vehicle charging equipment equipped with a user card. The authentication method includes:

The vehicle-mounted charging equipment reads the user identity and user certificate from the user card; establishes a wireless link between the vehicle-mounted charging equipment and the wireless charging pile, and sends an authentication request to the device manager through the wireless charging pile, Wherein, the authentication request carries the user identity, the user certificate and the device information of the vehicle charging device;

The device manager returns an authentication response to the vehicle charging device through the wireless charging pile;

The on-board charging device receives the authentication response.

2. The authentication method as claimed in claim 1, wherein,

After establishing a wireless link between the vehicle charging equipment and the wireless charging pile, and before sending an authentication request to the device manager, the method also includes: mutual authentication of certificates, and then sending the authentication after the authentication is passed and a secure connection is established. request, if authentication fails, the authentication request will not be sent.

3. The authentication method as claimed in claim 1 or 2, wherein:

The authentication interface should be the authentication success interface;

The method also includes: initiating a charging process with the wireless charging pile.

4. The authentication method as claimed in claim 1 or 2, wherein:

The authentication request sent by the on-board charging equipment to the device manager also carries information about requesting a certificate from the device manager;

The authentication response received by the on-board charging device is an authentication success response, and the authentication success response carries the device manager certificate;

The method also includes: the vehicle charging device verifying the device manager certificate carried in the authentication success response, and if the verification is passed, starting the charging process with the wireless charging pile.

5. A method for certifying vehicle charging equipment, applied to equipment management of charging station service network The device manager is used to manage wireless charging piles in the service network. The method includes: the device manager receives an authentication request sent by the vehicle charging device through the wireless charging pile it is currently connected to, and the authentication request carries There are user identification, user certificate, device information of the vehicle charging equipment and wireless charging pile identification of the wireless charging pile;

If the device manager determines that the following three conditions are met, the device manager sends an authentication success response to the vehicle charging device through the wireless charging pile:

3 full certificates passed for the user certificate;

Determine that the user identity, the device information of the vehicle charging equipment and the wireless charging pile identification are valid;

The wireless charging pile and the vehicle-mounted charging equipment are determined to match according to the equipment information of the vehicle-mounted charging equipment and the wireless charging pile identification.

6. The method of claim 5,

Before receiving the authentication request, the method further includes:

The device manager performs certificate-based mutual authentication between the wireless charging pile and the vehicle charging equipment, and establishes a secure connection after passing the authentication.

7. The method of claim 6, wherein:

The authentication request also carries information requesting the device manager certificate;

Correspondingly, the authentication success response carries the device manager certificate.

8. The method according to any one of claims 5-7, further comprising:

If the device manager determines that any of the following situations occur, it will send an authentication failure response to the vehicle charging device through the wireless charging pile:

The verification of the user certificate failed;

Any information among the user identification, the device information of the vehicle charging equipment and the wireless charging pile identification is invalid;

The wireless charging pile does not match the vehicle charging equipment.

9. A vehicle charging equipment, including a battery pack, a charging module, a control module and a wireless communication module, and a structure for installing a user card, wherein: The control module includes an information reading unit and a first authentication unit, where:

The information reading unit is configured to: read the user identity and user certificate from the user card;

The first authentication unit is configured to: send an authentication request to the device manager of the service network through the currently connected wireless charging pile, carrying the user identity, user certificate and device information of the vehicle charging device; and receive the The device manager returns the authentication response through the wireless charging pile.

10. The vehicle charging equipment as claimed in claim 9, wherein:

The control module also includes a second authentication unit, wherein:

The second authentication unit is configured to: after the wireless communication module establishes a wireless link with the wireless charging pile, perform certificate-based mutual authentication between the wireless charging pile and the device manager. After the secure connection is established, the first authentication unit is notified to send the authentication request.

11. The vehicle charging equipment as claimed in claim 9 or 10, wherein:

The first authentication unit is further configured to: start the charging process with the wireless charging pile after the received authentication response is an authentication success response.

12. The vehicle charging equipment as claimed in claim 9 or 10, wherein

The first authentication unit is further configured to: The authentication request sent to the device manager also carries information about requesting a certificate from the device manager; after the received authentication response is an authentication success response, wherein the authentication is successful The device manager certificate is carried in the response, and the device manager certificate carried therein is first verified. If the verification certificate is passed, the charging process with the wireless charging pile is started.

13. A device manager in a charging station service network. The service network also includes wireless charging piles. The device manager includes a device database and a charging control module, where:

The device database stores the wireless charging identification of the wireless charging pile in the charging station and the device information of the matching vehicle-mounted charging equipment;

The charging control module includes:

A receiving unit, configured to: receive wireless charging of the vehicle charging device through which it is currently connected An authentication request sent by the charging pile, wherein the authentication request carries the user identity, the user certificate, the device information of the vehicle charging equipment and the wireless charging pile identification of the wireless charging pile;

The first authentication unit is set to: If it is determined that the following three conditions are met, send an authentication success response to the vehicle charging equipment through the wireless charging pile:

After the verification of the user certificate passes;

14. The device manager of claim 13, wherein:

The first authentication unit is also configured to: send an authentication failure response to the vehicle charging device through the wireless charging pile when any of the following situations occurs:

The verification of the user certificate failed;

The wireless charging pile does not match the vehicle charging equipment.

15. The device manager of claim 13, wherein:

The charging control module also includes:

The second authentication unit is configured to: perform certificate-based mutual authentication between the wireless charging pile and the vehicle charging equipment, and establish a secure connection after passing the authentication.