KR102596471B1 - Method for diagnosing and maintenancing of vehicle condition during electric vehicle charging - Google Patents

Abstract

The present invention relates to a method and system for diagnosing the state of an electric vehicle while charging an electric vehicle, comprising the steps of connecting the electric vehicle 100 to a charger 200 and diagnosing the state of the electric vehicle 100 while charging the electric vehicle 100; Transmitting the status diagnosis results of the electric vehicle 100 to the server 300 connected to the charger 200; displaying the received status diagnosis results of the electric vehicle 100; and indicating the need for replacement of the consumables if there are consumables to be replaced. A step of providing guidance, a step of requesting immediate payment for the consumables, and when immediate payment of the consumables is approved, automatic payment is made using the information entered or pre-registered information using the terminal 240 inside the charger 200, It includes steps of connecting to and guiding a nearby repair shop (400).
The present invention uses the charging time of an electric vehicle to diagnose problems with the system and consumables in the vehicle, guides you to a nearby repair shop when replacement of consumables is necessary, and allows immediate payment, so you can service and maintain the vehicle. There is an advantage in shortening the time required.

Description

Method for diagnosing vehicle status while charging an electric vehicle {METHOD FOR DIAGNOSING AND MAINTENANCING OF VEHICLE CONDITION DURING ELECTRIC VEHICLE CHARGING}

The present invention relates to a method and system for diagnosing the condition of an electric vehicle while charging an electric vehicle, and a method and system for diagnosing the condition of an electric vehicle while charging an electric vehicle, including a diagnostic function for diagnosing the condition of an electric vehicle while charging an electric vehicle and a maintenance function for guiding the user to a nearby repair shop. It's about the system.

As exhaust gas regulations have recently increased, demand for electric vehicles has been increasing. Unlike regular vehicles with internal combustion engines, electric vehicles charge fuel, that is, electricity, so the electric vehicle is parked at a place where a charger is installed and the battery is charged.

Accordingly, much effort is being made to revitalize electric vehicles by building infrastructure such as installing chargers to charge batteries.

However, current chargers only provide the battery charging function for electric vehicles, and as a result, there is a problem that in order to inspect electric vehicles, you must visit a separate repair shop and receive expert help.

Patent Document 1: Korean Patent Publication No. 0963529 (registered on June 7, 2010)

The purpose of the present invention is to diagnose the vehicle condition while charging an electric vehicle to reduce the time for separate servicing and maintenance, including a diagnostic function that can diagnose the condition of the electric vehicle while charging the electric vehicle and a maintenance function that guides the user to a nearby repair shop. The method and system are provided.

According to the features of the present invention for achieving the above-described object, the present invention includes a diagnostic step of connecting an electric vehicle to a charger to diagnose the state of the electric vehicle while charging the electric vehicle, and the diagnosis result of the state of the electric vehicle between the charger and the electric vehicle. A transmission step of transmitting to a connected server, a guidance step of displaying the status diagnosis results of the received electric vehicle and informing of the need for replacement of the consumables if there are consumables to be replaced, a request step of requesting immediate payment for the consumables, and a request step of requesting immediate payment for the consumables. When immediate payment is approved, automatic payment is made using the information entered or pre-registered information using the terminal inside the charger, and a maintenance guidance step is included to connect to and provide guidance to a nearby repair shop.

The diagnosis step is a step in which the electric vehicle is connected to a charger and a charging mode entry signal is received between the charger and the electric vehicle. When the charging mode entry signal is received, SLAC and SDP processes are performed according to standard procedures and a protocol is installed. It includes steps to:

After installing the protocol, entering an electric vehicle status scan mode through a power line in the can system of the electric vehicle, supplying power to electrical equipment through a power line, and using a vehicle self-diagnosis device on a canvas line in the can system It includes diagnosing the status of electrical equipment and transmitting the diagnosis result to the server through a gateway.

When power is supplied to the electrical equipment, the vehicle self-diagnosis device communicates with the electronic control unit (ECU) of the electrical equipment and diagnoses the status of the electrical equipment.

The electrical equipment includes a battery management system that determines information including voltage, current, output, and temperature of the battery, and the battery management system determines whether the obtained information is outside a preset normal range and diagnoses any abnormalities in the battery.

The electrical equipment includes a battery, BMS, electric motor, inverter, converter, and control unit.

The server shares the status of consumables, serviceable items, and promotional event information with nearby repair shops, and connects to and provides guidance to nearby repair shops.

In order to supply charging power to the battery of the electric vehicle, a charging cable connects the electric vehicle and the charger, and a status diagnosis unit that receives power from the battery while charging the electric vehicle and diagnoses the status of the electric vehicle, and receives the status diagnosis results of the electric vehicle. Displays the results of diagnosing the condition of the electric vehicle, informs you of the need for replacement of the consumables if there are consumables to be replaced, and informs you of whether to pay for the consumables immediately. If immediate payment for the consumables is approved, you can use the terminal inside the charger. It automatically makes payments using entered information or pre-registered information, and includes a server that connects to and guides you to a nearby repair shop.

The status diagnosis unit includes a vehicle self-diagnosis device that is connected to a CAN BUS line in a CAN system that connects the electronic control unit of the electrical equipment to diagnose the condition of the electrical equipment.

The status diagnosis unit includes a battery management system that determines whether the information including voltage, current, output, and temperature of the battery is out of a preset normal range and diagnoses abnormalities in the battery.

The charger includes a gateway for transmitting the condition diagnosis result of the electric vehicle diagnosed by the condition diagnosis unit to the server.

The display is one or more of a registered car owner's mobile phone app, a display unit provided inside the electric vehicle, and a monitor unit of the charger.

The server shares the status of consumables, serviceable items, and promotional event information with a nearby repair shop where the charger is located, and connects to and provides guidance to a nearby repair shop.

The server diagnoses the status of the electric vehicle through an authentication procedure using a public key-based structure and provides the diagnosis result to the vehicle owner.

Diagnosis of the condition of the electric vehicle includes the battery, BMS, electric motor, inverter, converter, and control unit.

The present invention uses the charging time of an electric vehicle to diagnose problems with the system and consumables in the vehicle, guides you to a nearby repair shop when replacement of consumables is necessary, and allows payment through information entered and registered in advance. It has the effect of shortening the time for vehicle maintenance and maintenance.

In addition, the present invention is a service based on the location of the charger and repair shop. It guides you to a nearby repair shop and provides price information such as promotional events at the repair shop, so it has the effect of providing services for customer convenience rather than providing one-sided information.

1 is a conceptual diagram showing a method and system for diagnosing a vehicle condition while charging an electric vehicle according to the present invention.
Figure 2 is a block diagram showing the configuration of a vehicle condition diagnosis system while charging an electric vehicle according to the present invention.
Figure 3 is a block diagram showing the configuration of a server in the vehicle status diagnosis system while charging an electric vehicle according to the present invention.
Figure 4 is a diagram showing an example of providing diagnosis results by the vehicle condition diagnosis method while charging an electric vehicle according to the present invention to the car owner through a mobile phone app.
Figure 5 is a flowchart illustrating a method for diagnosing vehicle status while charging an electric vehicle according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

As shown in FIG. 1, the method of diagnosing the state of the electric vehicle 100 while charging the electric vehicle according to the present invention connects the electric vehicle 100 to the charger 200 to diagnose the state of the electric vehicle 100 while charging the electric vehicle 100. The status diagnosis result of the electric vehicle 100 is transmitted to the server 300 connected to the charger 200. The server 300 displays the status diagnosis results of the electric vehicle 100 received through the charger 200 and, if there are consumables to be replaced, informs the user of the need for replacement of the consumables.

The server 300 requests immediate payment for the consumables, and if immediate payment for the consumables is approved by the borrower, the replacement cost of the consumables is automatically paid using the information entered or pre-registered information using the terminal inside the charger 200. It can connect to and guide you to a nearby repair shop.

The display 310 may be one or more of a registered car owner's mobile phone app, a display unit provided inside the electric vehicle 100, and a monitor unit of the charger 200. For example, the results of diagnosing the condition of the electric vehicle and the need for replacement of consumables may be displayed on an app installed on the car owner's mobile phone. In this case, the car owner can approve immediate payment for the consumables through the mobile phone app.

The server 300 can provide the vehicle owner with the results of diagnosing the condition of the electric vehicle, replacement time for consumables, and nearby repair shop promotion information. Additionally, the server 300 can receive and store information about nearby repair shops, consumables availability, serviceable items, and promotional events. Additionally, the server 300 may convert the list of repair shops, types of consumables, types of failures, and vehicle diagnosis results into a database and store them in the storage unit 302.

The server 300 can receive information such as payment status and recent replacement date from the borrower. The server 300 can use the information in the storage unit 302 to connect to and guide a nearby repair shop where consumables can be replaced. Additionally, the server 300 can transmit replacement request information for consumable parts to the repair shop 400 and guide the car owner to the location of the corresponding repair shop 400.

As shown in FIG. 2, while charging an electric vehicle, the vehicle condition diagnosis system receives power through the charging cable 201 and the charging cable 201 connecting the electric vehicle 100 and the charger 200, A condition diagnosis unit 130 that diagnoses the condition, a charger 200 that receives the diagnosis results of the electric vehicle 100 diagnosed by the condition diagnosis unit 130 and transmits them to the server 300, and provides the diagnosis results to the vehicle owner and consumables. It includes a server 300 that provides information on replacement and repair shops.

The electric vehicle 100 and the charger 200 are connected by a charging cable 201. Charging power is supplied to the battery 120 of the electric vehicle 100 through the charging cable 201. The charging cable 201 includes a charging power supply function and a data communication function. The charging cable 201 may be a charging control device that performs control and safety functions related to charging of an electric vehicle, for example, a charging cable equipped with an ICCB (In-Cable Control Box).

The charging cable 201 connects the charging input unit 110 of the electric vehicle 100 and the charging output unit 210 of the charger 200. When the electric vehicle 100 and the charger 200 are connected and a charging mode entry signal is received, the charging input unit 110 performs SLAC and SDP processes according to standard procedures and then installs the protocol.

After performing the SLAC and SDP processes according to standard procedures, check whether the charger 200 supports the protocol supported by the electric vehicle 100. If the charger 200 supports it, proceed to the next step for charging, and proceed to the next step for charging. If 200 does not support the protocol supported by the electric vehicle, the charging input unit 110 downloads and installs the protocol from the outside.

When protocol installation by the charging input unit 110 is completed, the status diagnosis unit 130 enters the electric vehicle status scan mode through the power line in the CAN system of the electric vehicle 100. The condition diagnosis unit 130 includes a vehicle self-diagnosis device 131 and a battery management system 133.

CAN SYSTEM connects multiple electronic control units (ECUs) with CAN BUS lines to enable information exchange between ECUs.

The ECU is responsible for the vehicle's EMS (Engineer Management System), TCU (Telecommunication Control Unit), HDU (Hybrid Control Unit), BMS (Battery Management System), ECS (Electronic Power Steering), MDPS (Motor Driving Power Steering), and LKAS (Lane Control Unit). It is a device installed in the Keeping Assist System (SCC), Smart Cruise Control (SCC), etc. to control its functions, and is connected to the vehicle self-diagnosis device (131) through CAN communication. The canvas line connects to the CAN transceiver to enable various diagnoses while communicating between each ECU and the vehicle self-diagnosis device (131). The vehicle self-diagnosis device 131 can define diagnosis-related CAN IDs for ECUs to be diagnosed.

In the embodiment, the vehicle self-diagnosis device 131 is connected to a CAN BUS line in a CAN system that connects the ECU of the electrical equipment to diagnose the status of the electrical equipment 132.

The electrical equipment 132 includes a battery, BMS, electric motor, inverter, converter, and control unit.

When power is supplied to the electrical equipment 132, the vehicle self-diagnosis device 131 communicates with the ECU installed in the electrical equipment 132 and diagnoses the status of the electrical equipment 132. Each ECU installed in the electrical equipment 132 starts CAN communication when power is supplied to the electrical equipment 132 and transmits a CAN message to the vehicle self-diagnosis device 131 through its respective node through CAN communication. The CAN message may include operation status information (e.g. log information) of each ECU according to the driving of the vehicle. The battery 120 supplies the power required for the electrical equipment 132 through a power line connected to the electrical equipment 132. The power line may be PLC (Power Line Communication).

CAN messages contain basic information about CAN messages such as CAN channel, node, ID, data length, message class, and data properties such as SendType (whether it is a periodic message or event message), cycle time, number of message transmission repetitions, operation at start, etc. Includes all.

The battery management system 133 is one of the electrical components. However, the battery management system 133 checks the status of the battery separately from the vehicle self-diagnosis device 131 and generates inspection data. The battery management system 133 can diagnose the presence or absence of an abnormality in the battery 120 by identifying information including the voltage, current, output, and temperature of the battery, and determining whether the identified information is outside a preset normal range.

The status diagnosis results of the electric vehicle 100 diagnosed by the vehicle self-diagnosis device 131 and the battery management system 133 are transmitted to the gateway 230. In other words, the status diagnosis results of the electric vehicle are transmitted to the charger's gateway through the charging cable and to the server through the gateway.

The charger 200 includes a charging output unit 210, a charging power unit 220, a gateway 230, and a terminal 240. The charger 200 is connected to the electric vehicle 100 through the charging output unit 210, and the charging power unit 220 supplies charging power through the charging output unit 210. The gateway 230 transmits the status diagnosis result of the electric vehicle 100 received from the status diagnosis unit 130 through the charging cable 201 to the server 300. The terminal 240 provides communication functions for payment.

As shown in FIG. 3, the server 300 includes a control unit 301, a storage unit 302, and a communication unit 303. The control unit 301 receives the status diagnosis results of the electric vehicle, displays the status diagnosis results of the electric vehicle, and, if there are consumables to be replaced, informs the user of the need for replacement of the consumables. In addition, the control unit informs the user whether to pay for the consumables immediately, and if the immediate payment for the consumables is approved, the charger automatically makes payment using the input information or pre-registered information using the terminal 240 inside the charger and connects to and guides the charger to a nearby repair shop.

The storage unit 302 can store the list of repair shops, types of consumables, types of failures, and vehicle diagnosis results in a database. Accordingly, the server 300 can manage consumables of the electric vehicle 100.

The communication unit 303 can communicate with a charger and a repair shop using one or more communication methods among home network, PLC communication, CP signal, wireless communication, and the Internet, and can provide vehicle diagnosis results to the car owner.

The server 300 can diagnose the status of the electric vehicle 100 through an authentication procedure using public key infrastructure (PKI) to increase information reliability and provide the diagnosis result to the vehicle owner. The public key-based structure is an asymmetric encryption method in which the encryption and decryption keys are different. Data security can be achieved and the possibility of information leakage can be minimized by encrypting the diagnosis result data provided by the server 300 to the car owner and using different authentication keys to decrypt the data in order for the car owner to check the diagnosis result data.

For example, a hardware-based security module is installed on the server 300 to ensure the integrity of device data and to configure a safe network environment to defend against network attacks in the IoT communication environment. In addition, a certificate can be provided to each device and borrower through a public key-based structure.

Additionally, the server 300 can further improve security functions by converging FIDO-based biometric authentication and PKI.

The display 310 may be included in the server 300, the charger 200, or the electric vehicle 100.

The diagnosis results provided to the car owner include the latest replacement date of the consumables and the time when replacement is needed, and when requesting replacement of consumables, price information on consumables and the location of a nearby repair shop can also be provided to allow the car owner to select a repair shop.

For example, as shown in FIG. 4, diagnosis results are provided to the car owner's mobile phone app, and consumables requiring replacement may be displayed along with the previous replacement date. When the car owner clicks on the payment and repair shop information bar, the location of a nearby repair shop can be provided along with the prices of consumables. The car owner can pay for consumables by selecting the desired repair shop among those provided by the server. Once the cost of consumables is paid, the server can provide information and location of the relevant repair shop. The vehicle's charging information may be displayed on the car owner's mobile phone app. For example, the charging rate of an electric vehicle may be displayed. This is to allow the car owner to confirm charging completion after paying for consumables.

Meanwhile, the repair shop 400 periodically provides consumable possession status, serviceable items, and promotional event information while transmitting and receiving information to and from the server 300, and can receive consumable replacement request information along with vehicle number information from the server 300. .

Hereinafter, the method of diagnosing vehicle status while charging an electric vehicle according to the present invention will be described through a flowchart.

As shown in Figure 5, the method of diagnosing the vehicle status while charging an electric vehicle includes the steps of connecting the electric vehicle to the charger and receiving a charging mode entry signal between the charger and the electric vehicle (S10), and when the charging mode entry signal is received, standard procedures are performed. After performing the SLAC and SDP processes, the steps of installing the protocol (S20) and entering the electric vehicle status scan mode through the power line (PLC) in the CAN system of the electric vehicle (S30) and the step of entering the electric vehicle status scan mode through the power line (PLC) A step of supplying power to the electrical equipment (S40), a step of diagnosing the status of the electrical equipment through a vehicle self-diagnosis device on the CAN BUS line in the CAN system (S50), and a step of transmitting the diagnosis results to the gateway through the charging cable ( It includes steps S60) and transmitting the diagnosis results to the server through the gateway (S70).

When power is supplied to the electrical equipment, the vehicle self-diagnosis device can diagnose the status of the electrical equipment by communicating with the electronic control unit (ECU) of the electrical equipment through the canvas line. The vehicle self-diagnosis device can receive diagnosis results by communicating with the charger's gateway through the charging cable.

The server displays the received diagnosis results and, if there are consumables to be replaced, informs the user of the need for replacement of the consumables (S80). Additionally, the server requests immediate payment for consumables (S90).

When immediate payment for consumables is approved by the car owner, the server automatically pays for the consumables using the information entered or pre-registered using the terminal inside the charger, and connects to and guides you to a nearby repair shop (S100).

Meanwhile, the server displays the received diagnosis results and, if there are no consumables to be replaced, ends the guidance and completes charging (S110).

Additionally, the server requests immediate payment for the consumables (S90), and if immediate payment is rejected, guidance ends and charging is completed (S110).

When charging is complete, a charging completion message may be displayed on the car owner's cell phone, displayed on the charger, or displayed on a vehicle equipped with an electric vehicle.

In the above-described embodiment, abnormalities in the system and consumables in the vehicle can be diagnosed using the charging time of the electric vehicle, and when the diagnosis results are provided to the vehicle owner, the latest replacement date and replacement time of the consumables are provided, so the vehicle owner can replace the consumables. It is easy to determine whether

In addition, as a service based on the location of the charger and repair shop, it guides you to a nearby repair shop and provides price information such as promotional events at the repair shop, so it is possible to provide services for customer convenience rather than providing one-sided information.

In addition, the server can manage the maintenance status of consumables in the repair shop and the consumables of the vehicle, which has the advantage of shortening maintenance time by ordering and paying for consumables in advance.

The best embodiments of the present invention are disclosed in the drawings and specification. Here, specific terms are used, but they are used only for the purpose of explaining the present invention and are not used to limit the meaning or scope of the present invention described in the claims. Therefore, those skilled in the art will understand that various modifications and equivalent embodiments of the present invention are possible therefrom. Therefore, the true scope of technical rights of the present invention should be determined by the technical spirit of the appended claims.

100: electric vehicle 110: charging input unit
120: Battery 130: Status diagnosis unit
131: Vehicle self-diagnosis device 132: Electrical equipment
133: Battery management system 200: Charger
210: charging output unit 220: charging power unit
230: gateway 240: terminal
300: Server 301: Control unit
302: storage unit 303: communication unit
310: Display 400: Repair shop

Claims (15)

These are processes performed by a condition diagnosis unit provided inside an electric vehicle that diagnoses the condition of the electric vehicle by receiving power through a charging cable,
A diagnosis step of diagnosing the status of the electric vehicle by connecting the electric vehicle to a charger and connecting to a CAN transceiver while charging the electric vehicle to perform various diagnostics while communicating with each ECU in the vehicle;
A transmission step of transmitting a status diagnosis result of the electric vehicle to a server connected to the charger;
As processes performed by the server,
An information step of displaying the status diagnosis results of the electric vehicle received by the server and informing of the need for replacement of the consumable parts if there are consumable parts to be replaced;
A request step of requesting immediate payment for the consumables; and
When immediate payment for the consumables is approved, automatic payment is made using the information entered or pre-registered information using the terminal inside the charger, and a maintenance guidance step of connecting to and guiding a nearby repair shop;
The diagnostic step is,
Connecting the electric vehicle to a charger and receiving a charging mode entry signal between the charger and the electric vehicle;
When the charging mode entry signal is received, performing SLAC and SDP processes according to standard procedures and then installing a protocol;
Entering an electric vehicle status scan mode through a power line in the CAN SYSTEM of the electric vehicle;
Supplying power to electrical equipment through a power line;
Diagnosing the status of the electrical equipment through a vehicle self-diagnosis device on the canvas line in the can system; and
Transmitting diagnostic results to the server through a gateway;
Including,
The electrical equipment includes a battery, BMS, electric motor, inverter, converter, and control unit,
A vehicle status diagnosis method while charging an electric vehicle, characterized in that when power is supplied to the electrical equipment, the vehicle self-diagnosis device communicates with an electronic control unit (ECU) of the electric equipment and diagnoses the status of the electric equipment.
delete delete delete In claim 1,
The electrical equipment includes a battery management system that determines information including voltage, current, output, and temperature of the battery,
The battery management system is a method of diagnosing the status of a vehicle while charging an electric vehicle, characterized in that it determines whether the obtained information is outside a preset normal range and diagnoses whether there is an abnormality in the battery.
delete In claim 1,
A method of diagnosing the condition of a vehicle while charging an electric vehicle, characterized in that the server shares the status of consumables, serviceable items, and promotional event information with a nearby repair shop, and connects to and provides guidance to a nearby repair shop.

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