WO2023226492A1

WO2023226492A1 - Vehicle-to-vehicle charging device and system, and vehicle

Info

Publication number: WO2023226492A1
Application number: PCT/CN2023/078281
Authority: WO
Inventors: 刘国权; 王俊龙; 郑乐平; 王亮; 薛鹏辉
Original assignee: 比亚迪股份有限公司
Priority date: 2022-05-26
Filing date: 2023-02-24
Publication date: 2023-11-30
Also published as: CN117162821A

Abstract

A vehicle-to-vehicle charging device, comprising: a first charging gun (11), comprising a first resistor (R1) and a first charging gun connection confirmation end (CC1); and a second charging gun (12), comprising a second resistor (R2) and a second charging gun connection confirmation end (CC2), the first charging gun connection confirmation end (CC1) being connected to the second charging gun connection confirmation end (CC2). Further disclosed are a vehicle-to-vehicle charging device having the vehicle-to-vehicle charging system, and a vehicle. The device can detect a charging connection state by using a charging gun connection confirmation end of the original charging gun, without additionally providing a charging gun connection confirmation end and an auxiliary circuit, thereby reducing vehicle costs; moreover, the vehicle-to-vehicle charging device is simple in structure, easy to implement and very good in practicability and economy.

Description

Vehicle-to-vehicle charging devices, systems and vehicles

Cross-references to related applications

This disclosure requires the priority of the Chinese patent application filed with the China Patent Office on May 26, 2022, with application number 202210590571. The contents are incorporated by reference into this disclosure.

Technical field

The present disclosure belongs to the field of vehicle technology, and particularly relates to a vehicle-to-vehicle charging device, system and vehicle.

Background technique

At present, charging piles are not as popular as gas stations. New energy vehicles often have low battery power and cannot find a charging pile while driving. If they continue to drive, they will lose power and break down, and need to wait for rescue in place, giving users causing great inconvenience. In this way, car-to-car charging has great practicality. Currently, vehicle-to-vehicle charging usually requires the addition of an additional charger, making the vehicle-to-vehicle charging device complex and costly.

Contents of the invention

In order to overcome the problems existing in related technologies, the present disclosure provides a vehicle-to-vehicle charging device, system and vehicle.

In order to achieve the above object, in a first aspect, the present disclosure provides a vehicle-to-vehicle charging device, including:

The first charging gun includes a first resistor and a first charging gun connection confirmation terminal. One end of the first resistor is connected to the first charging gun connection confirmation terminal, and the other end is grounded. The first charging gun connection confirmation terminal is to a first power source connected to the first vehicle;

The second charging gun includes a second resistor and a second charging gun connection confirmation terminal. One end of the second resistor is connected to the second charging gun connection confirmation terminal, and the other end is grounded. The second charging gun connection confirmation terminal is to a second power source connected to the second vehicle;

Wherein, the first charging gun connection confirmation terminal and the second charging gun connection confirmation terminal are connected.

Optionally, the first charging gun further includes a first lock switch, which is provided between the first resistor and the first charging gun connection confirmation terminal;

The second charging gun also includes a second lock switch, which is disposed between the second resistor and the second charging gun connection confirmation terminal.

Optionally, the first charging gun connection confirmation terminal and the second charging gun connection confirmation terminal are directly connected through a high-voltage cable.

Optionally, the first charging gun further includes a third charging gun connection confirmation terminal and a third resistor. The third charging gun connection confirmation terminal has one end connected to ground through the third resistor and the other end used to connect to the third resistor. a first vehicle controller connection for the first vehicle;

The second charging gun also includes a fourth charging gun connection confirmation terminal and a fourth resistor. The fourth charging gun connection confirmation terminal has one end grounded through the fourth resistor and the other end used to connect to the second vehicle. Second vehicle controller connection.

In a second aspect, the present disclosure provides a vehicle, including:

The vehicle controller includes a detection port, the detection port being used to connect with the first charging gun connection confirmation terminal or the second charging gun connection confirmation terminal in the vehicle-to-vehicle charging device provided by the first aspect of the present disclosure;

a battery pack connected to the vehicle controller;

Power supply, one end of the power supply is connected to the detection port, and the other end is grounded.

Optionally, a charging base is also included. The charging base includes a charging base connection confirmation terminal. The charging base connection confirmation terminal is used to communicate with the first charging gun connection confirmation terminal or the second charging gun connection confirmation terminal. Connect and connect to the detection port through wires.

Optionally, a power supply resistor is also included, and the power supply resistor is connected between the power supply and the detection port.

In a third aspect, the present disclosure provides a vehicle-to-vehicle charging system, including:

a first vehicle, including a first vehicle controller, a first battery pack, and a first power supply, the first vehicle controller including a first detection port;

a second vehicle including a second vehicle controller, a second battery pack, and a second power source, the second vehicle controller including a second detection port; and

The vehicle-to-vehicle charging device provided according to the first aspect of the present disclosure;

Wherein, the first charging gun connection confirmation terminal and the first power supply are both connected to the first detection port, so that the first vehicle controller determines the first detection port according to the voltage of the first detection port. The connection status of a vehicle and the first charging gun;

The second charging gun connection confirmation terminal and the second power supply are both connected to the second detection port, so that the second vehicle controller determines the second vehicle according to the voltage of the second detection port. The connection status with the second charging gun.

Optionally, the first vehicle further includes a first charging stand, the first charging stand includes a first charging stand connection confirmation terminal, and the first charging stand connection confirmation terminal is used to connect to the first charging gun. The confirmation terminal is connected and connected to the first detection port through a wire;

The second vehicle further includes a second charging base, the second charging base includes a second charging base connection confirmation terminal, and the second charging base connection confirmation terminal is used to connect to the second charging gun connection confirmation terminal. , and is connected to the second detection port through a wire.

Optionally, the first vehicle further includes a fifth resistor, one end of which is connected to the first power source, and the other end of which is connected to the first power source. The terminal is respectively connected to the first detection port and the first charging stand connection confirmation terminal;

The second vehicle further includes a sixth resistor, one end of which is connected to the second power source, and the other end of which is connected to the second detection port and the second charging base connection confirmation end respectively.

Optionally, in the case where the first charging gun includes the third charging gun connection confirmation terminal, the first charging base further includes a third charging base connection confirmation terminal and a seventh resistor, and the third charging base A connection confirmation terminal, one end of which is grounded through the seventh resistor, and the other end is used to connect to the third charging gun connection confirmation terminal;

The second charging base also includes a fourth charging base connection confirmation terminal and an eighth resistor. The fourth charging base connection confirmation terminal has one end grounded through the eighth resistor and the other end used to connect to the fourth charging gun. Connection confirmation end connection;

Wherein, the third charging base connection confirmation terminal is connected to the first vehicle controller, so that the first vehicle controller determines the connection between the first charging base and the first vehicle controller according to the voltage of the third charging base connection confirmation terminal. The connection status of the DC charging pile;

The fourth charging base connection confirmation terminal is connected to the second vehicle controller, so that the second vehicle controller determines the second charging base and the voltage according to the voltage of the fourth charging base connection confirmation terminal. The connection status of the DC charging pile.

Optionally, the first vehicle further includes: a first battery connected to the first vehicle controller and used to provide electrical energy to the first vehicle controller;

The second vehicle further includes: a second battery connected to the second vehicle controller and used for providing electric energy to the second vehicle controller.

Optionally, the vehicle-to-vehicle charging system of the present disclosure applies the following vehicle-to-vehicle charging connection status detection method:

Obtain voltage signals of the first detection port and the second detection port;

Determine the vehicle-to-vehicle charging connection status according to the voltage signal and the preset status table;

Wherein, the status table includes the connection status of the first charging gun and the first vehicle, and the second charging gun and the second vehicle corresponding to the voltage signal.

In the above technical solution, the vehicle-to-vehicle charging device includes a first charging gun and a second charging gun, wherein the first charging gun includes a first resistor and a first charging gun connection confirmation terminal; the second charging gun includes a second resistor and a first charging gun connection confirmation terminal. The second charging gun connection confirmation terminal is used to connect to the first power supply of the first vehicle. The second charging gun connection confirmation terminal is used to connect to the second power supply of the second vehicle. The first charging The gun connection confirmation terminal is connected to the second charging gun connection confirmation terminal. In this way, the existing first charging gun and the second charging gun can be used to form a vehicle-to-vehicle charging device by connecting the first charging gun connection confirmation terminal and the second charging gun connection confirmation terminal. In this way, the original charging gun can be used. The charging gun connection confirmation terminal that comes with the charging gun can detect the charging connection status. There is no need to add an additional charging gun connection confirmation terminal or an additional auxiliary circuit, which reduces vehicle costs. Moreover, the vehicle-to-vehicle charging device has a simple structure. , easy to implement, very practical and economical.

Other features and advantages of the present disclosure will be described in detail in the detailed description that follows.

Description of the drawings

FIG. 1 is a topology diagram of a vehicle-to-vehicle charging system according to an exemplary embodiment.

FIG. 2 is a topology diagram of a vehicle-to-vehicle charging device according to an exemplary embodiment.

FIG. 3 is a topology diagram of a vehicle-to-vehicle charging device according to another exemplary embodiment.

FIG. 4 is a topology diagram of a vehicle-to-vehicle charging device according to another exemplary embodiment.

FIG. 5 is a topology diagram of a vehicle-to-vehicle charging system according to another exemplary embodiment.

FIG. 6 is a topology diagram of a vehicle-to-vehicle charging system according to another exemplary embodiment.

Figure 7 is a schematic topology diagram of the vehicle-to-vehicle charging system corresponding to Figure 6.

FIG. 8 is a topology diagram of a vehicle-to-vehicle charging system according to another exemplary embodiment.

FIG. 9 is a topology diagram of a vehicle-to-vehicle charging system according to another exemplary embodiment.

FIG. 10 is a topology diagram of a vehicle-to-vehicle charging system according to another exemplary embodiment.

Explanation of reference signs
1 Vehicle-to-vehicle charging device 2 First vehicle
3 Second vehicle R1 First resistor
R2 second resistor R3 third resistor
R4 fourth resistor R5 fifth resistor
R6 sixth resistor R7 seventh resistor
R8 eighth resistor CC1 first charging gun connection confirmation terminal
CC2 The second charging gun connection confirmation terminal CC3 The first charging base connection confirmation terminal
CC4 The second charging base connection confirmation terminal CC5 The third charging gun connection confirmation terminal
CC6 The third charging base connection confirmation terminal CC7 The fourth charging gun connection confirmation terminal
CC8 Fourth charging base connection confirmation terminal KA first lock switch
KB second lock switch 11 first charging gun
12 Second charging gun 21 First vehicle controller
22 First charging base 31 Second vehicle controller
32 Second charging base UA first power supply
UB Second Power Supply 24 First Battery Pack
34 Second battery pack 23 First battery
33 Second battery S+ First communication line
S- second communication line DC+ first electrical connection line
DC- second electrical connection line 211 first detection port
311 Second detection port

Detailed ways

Specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

It should be noted that all actions to obtain signals, information or data in this disclosure are performed under the premise of complying with the corresponding data protection regulations and policies of the country where the location is located, and with authorization from the owner of the corresponding device.

FIG. 1 is a topology diagram of a vehicle-to-vehicle charging system according to an exemplary embodiment. As shown in Figure 1, the vehicle-to-vehicle charging system includes: a vehicle-to-vehicle charging device 1, a first vehicle 2 and a second vehicle 3, wherein the vehicle-to-vehicle charging device 1 can be used to charge the first vehicle 2 to the second vehicle. When the vehicle 3 is charged, or when the second vehicle 3 charges the first vehicle 2 , the first vehicle 2 and the second vehicle 3 are connected.

As shown in Figures 1 and 2, the vehicle-to-vehicle charging device 1 includes: a first charging gun 11 and a second charging gun 12, wherein the first charging gun 11 includes a first resistor R1 and a first charging gun connection confirmation terminal. CC1, the second charging gun 12 includes a second resistor R2 and a second charging gun connection confirmation terminal CC2.

Specifically, as shown in Figures 1 and 2, one end of the first resistor R1 is connected to the first charging gun connection confirmation terminal CC1, and the other end is connected to the ground (i.e., the vehicle body ground); one end of the second resistor R2 is connected to the second charging gun The connection confirmation terminal CC2 is connected, and the other end is grounded (i.e., the vehicle body ground); the first charging gun connection confirmation terminal CC1 is used to connect to the first power supply UA of the first vehicle 2; the second charging gun connection confirmation terminal CC2 is used to connect to the third power supply UA. The second power supply UB of the second vehicle 3, the first charging gun connection confirmation terminal CC1 and the second charging gun connection confirmation terminal CC2 are connected. For example, the first charging gun connection confirmation terminal CC1 and the second charging gun connection confirmation terminal CC2 are directly connected through a high-voltage cable.

As shown in FIG. 1 , the first vehicle 2 includes a first vehicle controller 21 , a first battery pack 24 and a first power supply UA, wherein the first vehicle controller 21 includes a first detection port 211 ; the second vehicle 3 includes a first detection port 211 . The second vehicle controller 31 has a second battery pack 34 and a second power supply UB, wherein the second vehicle controller 31 includes a second detection port 311 .

Specifically, as shown in FIG. 1 , the first battery pack 24 and the second battery pack 34 are electrically connected through the first electrical connection line DC+ and the second electrical connection line DC-; the first vehicle controller 21 and the second vehicle control unit are electrically connected. The device 31 is communicatively connected through the first communication line S+ and the second communication line S-. The first charging gun connection confirmation terminal CC1 and the first power supply UA are both connected to the first detection port 211, so that the first vehicle controller 21 determines the first vehicle 2 and the first charging gun 11 according to the voltage of the first detection port 211 The connection status is determined whether the first charging gun 11 is connected to the first vehicle 2 . The second charging gun connection confirmation terminal CC2 and the second power supply UB are both connected to the second detection port 311, so that the second vehicle controller 31 determines the second vehicle 3 and the second charging gun 12 according to the voltage of the second detection port 311. The connection status is determined whether the second charging gun 12 is connected to the second vehicle 3 .

For example, the first power supply UA and the second power supply UB are both 12V, and the first communication line S+ and the second communication line S- are both CAN buses.

In the above embodiment, the first charging gun connection confirmation terminal CC1 is set up to detect whether the first charging gun 11 is connected to the first vehicle 2, that is, to detect whether the first charging gun 11 and the first vehicle 2 are connected normally; The setting of the second charging gun connection confirmation terminal CC2 is to detect whether the second charging gun 12 is connected to the second vehicle 3, that is, to detect whether the second charging gun 12 and the second vehicle 3 are connected normally.

As shown in Figures 3, 5, 6 and 10, the first charging gun 11 in the above-mentioned vehicle-to-vehicle charging device 1 also includes a first locking switch KA. The first locking switch KA is disposed on the first resistor. Between R1 and the first charging gun connection confirmation terminal CC1. Among them, the first lock switch KA can be a mechanical switch and a normally closed lock switch. When the first charging gun 11 is not connected to the first vehicle 2, the first lock switch KA is in a locked state; when the user needs When connecting the first charging gun 11 to the first vehicle 2, the first lock switch KA can be controlled to be unlocked to successfully connect the first charging gun 11 to the first vehicle 2. After that, the first charging gun 11 is connected to the first vehicle 2. Vehicle 2 is connected, and then the first lock switch KA is controlled to lock, thereby preventing the first charging gun from falling off, improving the reliability and safety of the first vehicle charging connection, reducing manual operations, and making it convenient for users.

As shown in Figures 3, 5, 6 and 10, the second charging gun 12 in the vehicle-to-vehicle charging device 1 also includes a second locking switch KB. The second locking switch KB is disposed on the second resistor. Between R2 and the second charging gun connection confirmation terminal CC2. Among them, the second locking switch KB can be a mechanical switch and a normally closed locking switch. When the second charging gun 12 is not connected to the second vehicle 3, the second locking switch KB is in a locked state; when the user needs When connecting the second charging gun 12 to the second vehicle 3, the second lock switch KB can be controlled to be unlocked to smoothly connect the second charging gun 12 to the second vehicle 3. After that, the second charging gun 12 is connected to the second vehicle 3. Vehicle 3 is connected. Next, the second lock switch KB is controlled to lock, thereby preventing the second charging gun from falling off, improving the reliability and safety of the second vehicle charging connection, reducing manual operations, and making it convenient for users.

As shown in Figures 4 and 10, the first charging gun 11 also includes a third charging gun connection confirmation terminal CC5 and a third resistor R3, and the second charging gun 12 also includes a fourth charging gun connection confirmation terminal CC7 and a fourth resistor. R4.

Among them, the third charging gun is connected to the confirmation terminal CC5, and one end is connected to the ground (i.e., the body ground) through the third resistor R3. The other end is used to connect to the first vehicle controller 21 of the first vehicle 2; the fourth charging gun connection confirmation terminal CC7 has one end connected to ground through the fourth resistor R4, and the other end is used to connect to the second vehicle controller of the second vehicle 3 31 connections.

As shown in Figures 5 and 6, the first vehicle 2 also includes a first charging stand 22, where the first charging stand 22 includes a first charging stand connection confirmation terminal CC3, and the second vehicle 3 also includes a second charging stand 32, The second charging base 32 includes a second charging base connection confirmation terminal CC4.

Among them, the first charging base connection confirmation terminal CC3 is used to connect to the first charging gun connection confirmation terminal CC1 and is connected to the first detection port 211 through a wire; the second charging base connection confirmation terminal CC4 is used to connect to the second charging The gun connection confirmation terminal CC2 is connected and connected to the second detection port 311 through a wire.

As shown in Figure 6, the first vehicle 2 also includes a fifth resistor R5, one end of which is connected to the first power supply UA, and the other end is connected to the first detection port 211 and the first charging base connection confirmation terminal CC3 respectively; the second vehicle 3 also It includes a sixth resistor R6, one end of which is connected to the second power supply UB, and the other end of which is connected to the second detection port 311 and the second charging base connection confirmation terminal CC4 respectively.

As shown in Figure 8, the above-mentioned first charging gun 11 also includes a third charging gun connection confirmation terminal CC5 and a third resistor R3. Correspondingly, the first charging base 22 also includes a third charging base connection confirmation terminal CC6 and a seventh resistor. R7. Among them, the third charging base connection confirmation terminal CC6 has one end grounded through the seventh resistor R7, and the other end is used to connect with the third charging gun connection confirmation terminal CC5; the third charging gun connection confirmation terminal CC5 is grounded through the third resistor R3 (i.e. car body).

The third charging stand connection confirmation terminal CC6 is connected to the first vehicle controller 21 so that the first vehicle controller 21 determines the connection status of the first charging stand 22 and the DC charging pile according to the voltage of the third charging stand connection confirmation terminal CC6 .

The third charging gun connection confirmation terminal CC5 is provided so that when the first charging base 22 is connected to the DC charging pile, the first vehicle controller 21 can determine the first charge according to the voltage of the third charging base connection confirmation terminal CC6. The connection status of the base 22 and the DC charging pile is to detect whether the first charging base 22 and the DC charging pile are normally connected.

As shown in Figure 8, the second charging gun 12 also includes a fourth charging gun connection confirmation terminal CC7 and a fourth resistor R4. Correspondingly, the second charging base 32 also includes a fourth charging base connection confirmation terminal CC8 and an eighth resistor R8. . Among them, the fourth charging base connection confirmation terminal CC8 has one end grounded through the eighth resistor R8, and the other end is used to connect with the fourth charging gun connection confirmation terminal CC7; the fourth charging gun connection confirmation terminal CC7 is grounded through the fourth resistor R4 ( That is, the body of the vehicle).

The fourth charging base connection confirmation terminal CC8 is connected to the second vehicle controller 31, so that the second vehicle controller 31 determines the connection status of the second charging base 32 and the DC charging pile according to the voltage of the fourth charging base connection confirmation terminal CC8. .

The setting of the fourth charging gun connection confirmation terminal CC7 is so that when the second charging base 32 is connected to the DC charging pile, the second vehicle controller 31 can determine the second charging according to the voltage of the fourth charging base connection confirmation terminal CC8. The connection status between the second charging base 32 and the DC charging pile is detected. Are the electric piles connected properly?

As shown in FIGS. 9 and 10 , the above-mentioned first vehicle 2 may further include: a first battery 23 connected to the first vehicle controller 21 for providing electric energy to the first vehicle controller 21 . For example, when the first battery pack 24 of the first vehicle 2 is low in power, the first vehicle controller 21 can be provided with power to ensure normal detection of the charging connection state of the first vehicle.

As shown in FIGS. 9 and 10 , the second vehicle 3 also includes: a second battery 33 connected to the second vehicle controller 31 for providing electric energy to the second vehicle controller 31 . For example, when the second battery pack 34 of the second vehicle 3 is low in power, the second vehicle controller 31 can be provided with power to ensure normal detection of the charging connection state of the second vehicle.

The present disclosure also provides a vehicle-to-vehicle charging connection status detection method, wherein the method can be applied to the above-mentioned vehicle-to-vehicle charging system provided by the present disclosure. Among them, the method may include the following steps [1] and [2]:

[1] Obtain the voltage signals of the first detection port and the second detection port;

[2] Based on the voltage signal and the preset status table, determine the vehicle-to-vehicle charging connection status.

The status table includes the connection status of the first charging gun and the first vehicle, and the second charging gun and the second vehicle corresponding to the voltage signal.

The specific implementation method of determining the vehicle-to-vehicle charging connection status based on the voltage signal and the preset status table is described in detail below.

The connection state between the first charging gun 11 and the first vehicle 2 is represented by Ka. When Ka=0, it indicates that the first charging gun 11 and the first vehicle 2 are not connected. When Ka=1, It indicates that the first charging gun 11 and the first vehicle 2 are connected.

The connection state between the second charging gun 12 and the second vehicle 3 is represented by Kb. When Kb=0, it indicates that the second charging gun 12 and the second vehicle 3 are not connected. When Kb=1, it indicates that the second charging gun 12 and the second vehicle 3 are not connected. The second charging gun 12 and the second vehicle 3 are connected.

Among them, before performing charging connection detection through the vehicle-to-vehicle charging system, the voltage signal of the first detection port 211 and the voltage signal of the second detection port 311 under different charging connection conditions need to be calibrated. The calibration results are detailed in Table 1 below. Shown:

Table 1 Default status table

Specifically, the above-mentioned vehicle-to-vehicle charging connection system can perform charging connection detection through the following steps 1) to 8):

1) In response to detecting that the first vehicle controller 21 establishes a communication connection with the second vehicle controller 31, the first vehicle controller 21 detects whether the voltage signal of the first detection port 211 is U1, and the second vehicle controller 31 detects whether the voltage signal of the first detection port 211 is U1. 2. Check whether the voltage signal of port 311 is U2.

2) If the first vehicle controller 21 detects that the voltage signal of the first detection port 211 is U1, it indicates that the first charging gun 11 and the first vehicle 2 are not connected. At this time, the first vehicle controller 21 sends a signal to the second vehicle. The controller 31 sends a first status message indicating that the first charging gun 11 and the first vehicle 2 are not connected; at the same time, if the second vehicle controller 31 detects that the voltage signal of the second detection port 311 is U2, it indicates that the first charging gun 11 and the first vehicle 2 are not connected. The second charging gun 12 and the second vehicle 3 are not connected. At this time, the second vehicle controller 31 sends a second status message to the first vehicle controller 21 to indicate that the second charging gun 12 and the second vehicle 3 are not connected; If the first vehicle controller 21 receives the second status message and the second vehicle controller 31 receives the first status message, the following step 3) is performed; if the first vehicle controller 21 detects the first detection port 211 If the voltage signal is not U1 or the second vehicle controller 31 detects that the voltage signal of the second detection port 311 is not U2, the following step 8) is performed.

3) The first vehicle controller 21 detects whether the voltage signal of the first detection port 211 is U3, and the second vehicle controller 31 detects whether the voltage signal of the second detection port 311 is U4;

4) If the first vehicle controller 21 detects that the voltage signal of the first detection port 211 is U3, it indicates that the first charging gun 11 and the first vehicle 2 are connected. At this time, the first vehicle controller 21 sends a signal to the second vehicle. The controller 31 sends a third status message indicating that the first charging gun 11 and the first vehicle 2 are connected; at the same time, if the second vehicle controller 31 detects that the voltage signal of the second detection port 311 is U4, it indicates that the first charging gun 11 and the first vehicle 2 are connected. The second charging gun 12 and the second vehicle 3 are not connected. At this time, the second vehicle controller 31 sends a second status message to the first vehicle controller 21 to indicate that the second charging gun 12 and the second vehicle 3 are not connected; If the first vehicle controller 21 receives the second status message and the second vehicle controller 31 receives the third status message, the following step 5) is performed; if the first vehicle controller 21 detects the first detection port 211 If the voltage signal is not U3 or the second vehicle controller 31 detects that the voltage signal of the second detection port 311 is not U4, the following step 8) is performed.

5) The first vehicle controller 21 detects whether the voltage signal of the first detection port 211 is U5, and the second vehicle controller 31 detects whether the voltage signal of the second detection port 311 is U6;

6) If the first vehicle controller 21 detects that the voltage signal of the first detection port 211 is U5, it indicates that the first charging gun 11 and the first vehicle 2 are connected. At this time, the first vehicle controller 21 sends a signal to the second vehicle. The controller 31 sends a third status message indicating that the first charging gun 11 and the first vehicle 2 are connected; at the same time, if the second vehicle controller 31 detects that the voltage signal of the second detection port 311 is U6, it indicates that the first charging gun 11 and the first vehicle 2 are connected. The second charging gun 12 and the second vehicle 3 are connected. At this time, the second vehicle controller 31 sends a fourth status message to the first vehicle controller 21 to indicate that the second charging gun 12 and the second vehicle 3 are connected; If the first vehicle controller 21 receives the third status message and the second vehicle controller 31 receives the fourth status message, the following step 7) is performed; if the first vehicle controller 21 detects the first detection port 211 If the voltage signal is not U5 or the second vehicle controller 31 detects that the voltage signal of the second detection port 311 is not U6, the following step 8) is performed.

7) Enter the vehicle-to-vehicle charging process.

8) Alarm for abnormal charging connection.

The above vehicle-to-vehicle charging connection detection process will be described in detail below with reference to FIG. 7 .

Among them, in Figure 7, the connection state between the first charging gun 11 and the first vehicle 2 can be specifically the connection state between the first charging stand connection confirmation terminal CC3 and the first charging gun connection confirmation terminal CC1, where, When Ka=0, it indicates that the first charging base 22 of the first vehicle 2 is not connected to the first charging gun 11, that is, the first charging gun 11 is not inserted into the first charging base 22. When Ka=1, it indicates that the first charging The base 22 is connected to the first charging gun 11 , that is, the first charging gun 11 is inserted into the first charging base 22 .

The connection state between the second charging gun 12 and the second vehicle 3 may specifically be the connection state between the second charging stand connection confirmation terminal CC4 and the second charging gun connection confirmation terminal CC2, where, when Kb=0, it indicates The second charging base 32 of the second vehicle 3 is not connected to the second charging gun 12, that is, the second charging gun 12 is not inserted into the second charging base 32. When Kb=1, it indicates that the second charging base 32 and the second charging gun are not connected. 12 is connected, that is, the second charging gun 12 is inserted into the second charging base 32 .

The state of the first lock switch KA is represented by KA1, where when KA1=1, it indicates that the first lock switch KA is in the locked state, and when KA1=0, it indicates that the first lock switch KA is in the unlocked state.

The state of the second lock switch KB is represented by KB1. When KB1=1, it indicates that the second lock switch KB is in the locked state. When KB1=0, it indicates that the second lock switch KB is in the unlocked state.

Among them, before performing charging connection detection through the vehicle-to-vehicle charging connection system, the voltage of the first charging base connection confirmation terminal CC3 and the voltage of the second charging base connection confirmation terminal CC4 need to be calibrated under different charging connection conditions. The calibration results The details are shown in Table 2 below:

Table 2 Voltage of CC3 and voltage of CC4 under different charging connection conditions

Specifically, the above-mentioned vehicle-to-vehicle charging connection system can perform charging connection detection through the following steps (1) to (12):

(1) In response to detecting that the first vehicle controller 21 establishes a communication connection with the second vehicle controller 31, the first vehicle controller 21 detects whether the voltage of the first charging stand connection confirmation terminal CC3 is U1, and the second vehicle controller 31 Detect whether the voltage of the second charging stand connection confirmation terminal CC4 is U2.

(2) If the first vehicle controller 21 detects that the voltage of the first charging stand connection confirmation terminal CC3 is U1, it indicates that the first charging gun 11 is not inserted into the first charging stand 22. At this time, the first vehicle controller 21 The second vehicle controller 31 sends a fifth status message indicating that the first charging gun 11 is not inserted into the first charging stand 22; at the same time, if the second vehicle controller 31 detects that the voltage of the second charging stand connection confirmation terminal CC4 is U2 indicates that the second charging gun 12 is not inserted into the second charging base 32. At this time, the second vehicle controller 31 sends a signal to the first vehicle controller 21 to indicate that the second charging gun 12 is not inserted into the second charging base 32. The sixth status message; if the first vehicle controller 21 receives the sixth status message and the second vehicle controller 31 receives the fifth status message, the following step (3) is performed; if the first vehicle controller 21 detects If the voltage of the first charging stand connection confirmation terminal CC3 is not U1 or the second vehicle controller 31 detects that the voltage of the second charging stand connection confirmation terminal CC4 is not U2, the following step (12) is performed.

(3) The first vehicle controller 21 detects whether the voltage of the first charging stand connection confirmation terminal CC3 is U7, and the second vehicle controller 31 detects whether the voltage of the second charging stand connection confirmation terminal CC4 is U8;

(4) If the first vehicle controller 21 detects that the voltage of the first charging stand connection confirmation terminal CC3 is U7, it means that the first charging gun 11 is inserted into the first charging stand 22 and the first lock switch KA is unlocked. At this time , the first vehicle controller 21 sends the seventh status message to the second vehicle controller 31 to indicate that the first charging gun 11 is inserted into the first charging base 22 and the first lock switch KA is unlocked; at the same time, if the second vehicle The controller 31 detects that the voltage of the second charging stand connection confirmation terminal CC4 is U8, which indicates that the second charging gun 12 is not inserted into the second charging stand 32. At this time, the second vehicle controller 31 sends a signal to the first vehicle controller 21. A second status message used to indicate that the second charging gun 12 is not inserted into the second charging base 32; if the first vehicle controller 21 receives the sixth status message and the second vehicle controller 31 receives the seventh status message, then Perform the following step (5); if the first vehicle controller 21 detects that the voltage of the first charging stand connection confirmation terminal CC3 is not U7 or the second vehicle controller 31 detects that the voltage of the second charging stand connection confirmation terminal CC4 is not U7 U8, then perform the following steps (12).

(5) The first vehicle controller 21 detects whether the voltage of the first charging stand connection confirmation terminal CC3 is U9, and the second vehicle controller 31 detects whether the voltage of the second charging stand connection confirmation terminal CC4 is U10;

(6) If the first vehicle controller 21 detects that the voltage of the first charging stand connection confirmation terminal CC3 is U9, it means that the first charging gun 11 is inserted into the first charging stand 22 and the first lock switch KA is locked. When The second vehicle controller 31 detects that the voltage of the second charging stand connection confirmation terminal CC4 is U10, which indicates that the second charging gun 12 is not inserted into the second charging stand 32. At this time, the second vehicle controller 31 sends a signal to the first vehicle controller. 21 Send a sixth status message indicating that the second charging gun 12 is not inserted into the second charging base 32; if the first vehicle controller 21 receives the sixth status message, and the second vehicle controller 31 receives the eighth status message , then perform the following step (7); if the first vehicle controller 21 detects that the voltage of the first charging stand connection confirmation terminal CC3 is not U9 or the second vehicle controller 31 detects the voltage of the second charging stand connection confirmation terminal CC4 If it is not U10, perform the following steps (12).

(7) The first vehicle controller 21 detects whether the voltage of the first charging stand connection confirmation terminal CC3 is U11, and the second vehicle controller 31 detects whether the voltage of the second charging stand connection confirmation terminal CC4 is U12;

(8) If the first vehicle controller 21 detects that the voltage of the first charging stand connection confirmation terminal CC3 is U11, it means that the first charging gun 11 is inserted into the first charging stand 22 and the first lock switch KA is locked. When The voltage of the charging base connection confirmation terminal CC4 is U12, which indicates that the second charging gun 12 is inserted into the second charging base 32 and the second lock switch KB is unlocked. At this time, the second vehicle controller 31 sends a signal to the first vehicle controller 21 Send a ninth status message indicating that the second charging gun 12 is inserted into the second charging base 32 and the second lock switch KB is unlocked; if the first vehicle controller 21 receives the ninth status message and the second vehicle controller 31 receives the eighth status message, then perform the following step (9); if the first vehicle controller 21 detects that the voltage of the first charging stand connection confirmation terminal CC3 is not U11 or the second vehicle controller 31 detects that the voltage of the second If the voltage of charging dock connection confirmation terminal CC4 is not U12, perform the following steps (12).

(9) The first vehicle controller 21 detects whether the voltage of the first charging stand connection confirmation terminal CC3 is U13, and the second vehicle controller 31 detects whether the voltage of the second charging stand connection confirmation terminal CC4 is U14;

(10) If the first vehicle controller 21 detects that the voltage of the first charging stand connection confirmation terminal CC3 is U13, it means that the first charging gun 11 is inserted into the first charging stand 22 and the first lock switch KA is locked. When The second vehicle controller 31 detects that the voltage of the second charging stand connection confirmation terminal CC4 is U14, which indicates that the second charging gun 12 is inserted into the second charging stand 32 and the second lock switch KB is locked. At this time, the second vehicle The controller 31 sends a tenth status message to the first vehicle controller 21 to indicate that the second charging gun 12 is inserted into the second charging base 32 and the second lock switch KB is locked; if the first vehicle controller 21 receives The tenth status message and the second vehicle controller 31 receives the eighth status message, it indicates that the vehicle-to-vehicle charging connection is successful. At this time, the following step (11) can be performed; if the first vehicle controller 21 detects the first If the voltage of the charging stand connection confirmation terminal CC3 is not U13 or the second vehicle controller 31 detects that the voltage of the second charging stand connection confirmation terminal CC4 is not U14, the following step (12) is performed.

(11) Enter the vehicle-to-vehicle charging process.

(12) Alarm for abnormal charging connection.

The present disclosure also provides a vehicle, including:

A vehicle controller includes a detection port, the detection port being used to connect to the first charging gun connection confirmation terminal or the second charging gun connection confirmation terminal in the above-mentioned vehicle-to-vehicle charging device provided by the present disclosure;

a battery pack connected to the vehicle controller;

Optionally, the vehicle further includes a charging stand, the charging stand includes a charging stand connection confirmation end, and the charging stand connection confirmation end is used to connect with the first charging gun connection confirmation end or the second charging gun. The confirmation terminal is connected and connected to the detection port through a wire.

Optionally, the vehicle further includes a power supply resistor connected between the power supply and the detection port.

The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details of the above-mentioned embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure. These simple modifications all belong to the protection scope of the present disclosure.

In addition, it should be noted that the specific technical features described in the above-mentioned specific embodiments can be combined in any suitable manner as long as there is no contradiction. In order to avoid unnecessary repetition, various possible combinations will not be further described in this disclosure.

In addition, any combination of various embodiments of the present disclosure can also be carried out, and as long as they do not violate the idea of the present disclosure, they should also be regarded as the contents disclosed in the present disclosure.

Claims

A vehicle-to-vehicle charging device (1), characterized by including:

The first charging gun (11) includes a first resistor (R1) and a first charging gun connection confirmation terminal (CC1). One end of the first resistor (R1) is connected to the first charging gun connection confirmation terminal (CC1). , the other end is grounded, the first charging gun connection confirmation terminal (CC1) is used to connect to the first power supply (UA) of the first vehicle (2); and

The second charging gun (12) includes a second resistor (R2) and a second charging gun connection confirmation terminal (CC2). One end of the second resistor (R2) is connected to the second charging gun connection confirmation terminal (CC2). , the other end is grounded, and the second charging gun connection confirmation terminal (CC2) is used to connect to the second power supply (UB) of the second vehicle (3);

Wherein, the first charging gun connection confirmation terminal (CC1) and the second charging gun connection confirmation terminal (CC2) are connected.
The device (1) according to claim 1, characterized in that,

The first charging gun (11) also includes a first lock switch (KA), which is provided between the first resistor (R1) and the first charging gun connection confirmation terminal (CC1);

The second charging gun (12) also includes a second lock switch (KB), which is provided between the second resistor (R2) and the second charging gun connection confirmation terminal (CC2).
The device (1) according to claim 1 or 2, characterized in that the first charging gun connection confirmation terminal (CC1) and the second charging gun connection confirmation terminal (CC2) are directly connected through a high-voltage cable.
The device (1) according to any one of claims 1-3, characterized in that,

The first charging gun (11) also includes a third charging gun connection confirmation terminal (CC5) and a third resistor (R3). The third charging gun connection confirmation terminal (CC5) has one end through the third resistor (R3). R3) is grounded, and the other One end is used to connect with the first vehicle controller (21) of the first vehicle (2);

The second charging gun (12) also includes a fourth charging gun connection confirmation terminal (CC7) and a fourth resistor (R4). The fourth charging gun connection confirmation terminal (CC7) has one end through the fourth resistor (R4). R4) is grounded, and the other end is used to connect with the second vehicle controller (31) of the second vehicle (3).
A vehicle, characterized by including:

A vehicle controller, including a detection port, the detection port being used to connect with the first charging gun connection confirmation terminal or the second charging gun connection confirmation terminal according to any one of claims 1-4;

a battery pack connected to the vehicle controller; and

Power supply, one end of the power supply is connected to the detection port, and the other end is grounded.
The vehicle according to claim 5, further comprising a charging base, the charging base including a charging base connection confirmation end, the charging base connection confirmation end is used to connect with the first charging gun connection confirmation end or the first charging gun connection confirmation end. The second charging gun connection confirmation terminal is connected and connected to the detection port through a wire.
The vehicle according to claim 5 or 6, further comprising a power supply resistor connected between the power supply and the detection port.
A vehicle-to-vehicle charging system is characterized by including:

A first vehicle (2) includes a first vehicle controller (21), a first battery pack (24) and a first power supply (UA). The first vehicle controller (21) includes a first detection port (211) ;

The second vehicle (3) includes a second vehicle controller (31), a second battery pack (34) and a second power supply (UB). The second vehicle controller (31) includes a second detection port (311) ;as well as

The vehicle-to-vehicle charging device (1) according to any one of claims 1-4;

Wherein, the first charging gun connection confirmation terminal (CC1) and the first power supply (UA) are both connected to the first detection port (211), so that the first vehicle controller (21) The voltage of the first detection port (211) determines the connection between the first vehicle (2) and the first charging gun (11). connection status;

The second charging gun connection confirmation terminal (CC2) and the second power supply (UB) are both connected to the second detection port (311), so that the second vehicle controller (31) The voltage of the second detection port (311) determines the connection status between the second vehicle (3) and the second charging gun (12).
The vehicle-to-vehicle charging system according to claim 8, characterized in that:

The first vehicle (2) also includes a first charging base (22). The first charging base (22) includes a first charging base connection confirmation terminal (CC3). The first charging base connection confirmation terminal (CC3) ) is used to be connected to the first charging gun connection confirmation terminal (CC1), and to be connected to the first detection port (211) through a wire;

The second vehicle (3) also includes a second charging base (32). The second charging base (32) includes a second charging base connection confirmation terminal (CC4). The second charging base connection confirmation terminal (CC4) ) is used to connect to the second charging gun connection confirmation terminal (CC2), and is connected to the second detection port (311) through a wire.
The vehicle-to-vehicle charging system according to claim 9, characterized in that:

The first vehicle (2) also includes a fifth resistor (R5), one end of which is connected to the first power supply (UA), and the other end of which is connected to the first detection port (211) and the first charging base for confirmation. terminals (CC3) are connected respectively;

The second vehicle (3) also includes a sixth resistor (R6), one end of which is connected to the second power supply (UB), and the other end of which is connected to the second detection port (311) and the second charging base for confirmation. terminals (CC4) are connected respectively.
The vehicle-to-vehicle charging system according to claim 9 or 10, characterized in that,

In the case where the first charging gun (11) includes the third charging gun connection confirmation terminal (CC5), the first charging base (22) also includes a third charging base connection confirmation terminal (CC6) and a third charging base connection confirmation terminal (CC6). Seven resistors (R7), the third charging base is connected to the confirmation terminal (CC6), one end is grounded through the seventh resistor (R7), and the other One end is used to connect with the third charging gun connection confirmation terminal (CC5);

The second charging base (32) also includes a fourth charging base connection confirmation terminal (CC8) and an eighth resistor (R8). The fourth charging base connection confirmation terminal (CC8) has one end passing through the eighth resistor (R8). R8) is grounded, and the other end is used to connect with the fourth charging gun connection confirmation terminal (CC7);

Wherein, the third charging base connection confirmation terminal (CC6) is connected to the first vehicle controller (21), so that the first vehicle controller (21) according to the third charging base connection confirmation terminal ( The voltage of CC6) determines the connection status between the first charging base (22) and the DC charging pile;

The fourth charging stand connection confirmation terminal (CC8) is connected to the second vehicle controller (31), so that the second vehicle controller (31) according to the fourth charging stand connection confirmation terminal ( CC8) determines the connection status between the second charging base (32) and the DC charging pile.
The vehicle-to-vehicle charging system according to any one of claims 8-11, characterized in that,

The first vehicle (2) also includes: a first battery (23), connected to the first vehicle controller (21), for providing electric energy to the first vehicle controller (21);

The second vehicle (3) also includes: a second battery (33), connected to the second vehicle controller (31), for providing electric energy to the second vehicle controller (31).
The vehicle-to-vehicle charging system according to any one of claims 8-12, characterized in that the following vehicle-to-vehicle charging connection status detection method is applied:

Obtain the voltage signals of the first detection port (211) and the second detection port (311);

Determine the vehicle-to-vehicle charging connection status according to the voltage signal and the preset status table;

Wherein, the status table includes the connection status of the first charging gun and the first vehicle, and the second charging gun and the second vehicle corresponding to the voltage signal.