Gun insertion detection device and multi-terminal charging identification device

Abstract

The embodiment of the utility model provides a gun insertion detection device and a multi-terminal charging recognition device, and relates to the technical field of charging. The gun insertion detection device is installed in a charging gun head of the multi-terminal charging identification device, and comprises a contact switch sensor, and a preset contact part of the contact switch sensor protrudes out of an insertion contact surface of the charging gun head. The contact switch sensor is connected with a multi-terminal charging recognition device body of the multi-terminal charging recognition device through a charging gun line of the charging gun head, and the preset contact part is used for controlling the on-off state of the contact switch sensor. Therefore, the gun insertion detection device and the multi-terminal charging identification device provided by the utility model are high in stability and low in cost, can realize the detection of the multi-gun-line gun insertion detection device, and also improve the reliability and practicability of the multi-terminal charging identification device.

Description

Technical Field

[0001] This application relates to the field of charging technology, and more specifically, to a charging gun detection device and a multi-terminal charging identification device. Background Technology

[0002] With the continuous development of the new energy vehicle industry, the demand for vehicle insertion testing devices is constantly increasing. Among these, the ability to identify whether a vehicle insertion testing device is connected to the vehicle is particularly important.

[0003] Currently, most methods involve installing a non-contact switch sensor in the insertion gun detection device, utilizing the characteristics of the non-contact switch sensor to identify the connection status between the insertion gun detection device and the vehicle.

[0004] However, this method suffers from poor stability due to the susceptibility of non-contact switch sensors to temperature and surrounding objects, leading to higher costs for the gun insertion detection device. Furthermore, this method is suitable for single-wire gun insertion detection devices but cannot be used for multi-wire gun insertion detection devices, thus reducing the reliability and practicality of the device. Utility Model Content

[0005] In view of this, the purpose of this application is to provide a plug-in detection device and a multi-terminal charging identification device, which are highly stable and low in cost. They can not only detect plug-in devices with multiple plug lines, but also improve the reliability and practicality of multi-terminal charging identification devices.

[0006] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows:

[0007] In a first aspect, embodiments of this application provide a charging gun detection device, which is installed inside the charging gun head of a multi-terminal charging identification device. The charging gun detection device includes a contact switch sensor, a preset contact portion of which protrudes from the insertion contact surface of the charging gun head. The contact switch sensor is connected to the multi-terminal charging identification device body of the multi-terminal charging identification device through the charging gun wire of the charging gun head. The preset contact portion is used to control the on / off state of the contact switch sensor.

[0008] Optionally, one end of the contact switch sensor is connected to a preset power supply inside the multi-terminal charging identification device body, and the other end of the contact switch sensor is connected to a control unit inside the multi-terminal charging identification device body. The preset contact portion is used to control the on / off state between one end and the other end of the contact switch sensor.

[0009] Optionally, the contact switch sensor is a limit switch.

[0010] Secondly, embodiments of this application provide a multi-terminal charging identification device, comprising: a multi-terminal charging identification device body and at least two charging gun heads, wherein each charging gun head is provided with any of the plug-in detection devices described in the first aspect above, the multi-terminal charging identification device body includes: a power module and a control module, the input terminal of the power module is used to connect to a preset external power supply, the control terminal of the power module is connected to the control module; the main power circuit of the output terminal of the power module is connected to the power lines of the at least two charging gun lines through at least two branch power circuits respectively;

[0011] The control module is also connected to the signal lines of the at least two charging gun lines, and the at least two charging gun lines are respectively connected to the at least two charging gun heads.

[0012] Optionally, the multi-terminal charging identification device body further includes: at least two sets of first contactors, the at least two sets of first contactors being respectively disposed on the at least two branch power circuits, and the at least two sets of first contactors being connected to the control module.

[0013] Optionally, the multi-terminal charging identification device body further includes: a set of second contactors, the second contactors being disposed on the main power circuit, and the second contactors being connected to the control module.

[0014] Optionally, the multi-terminal charging identification device body further includes a fuse, which is disposed on the main power circuit.

[0015] Optionally, the multi-terminal charging identification device body further includes: a first circuit breaker, the input terminal of the power module is connected to the first circuit breaker, the first circuit breaker is used to connect to the preset external power supply, and the first circuit breaker is also connected to the control module.

[0016] Optionally, the multi-terminal charging identification device body further includes a surge protector, which is connected to the input terminal of the power module.

[0017] Optionally, the multi-terminal charging identification device body further includes: a second circuit breaker, the surge protector is connected to the input terminal of the power module through the second circuit breaker, and the second circuit breaker is also connected to the control module.

[0018] The beneficial effects of the plug-in detection device and the multi-terminal charging identification device provided in this application are:

[0019] This application discloses a charging gun detection device and a multi-terminal charging identification device, relating to the field of charging technology. The charging gun detection device is installed inside the charging gun head of the multi-terminal charging identification device. This device can be composed of a contact switch sensor, with a preset contact portion protruding from the insertion contact surface of the charging gun head. The contact switch sensor is connected to the multi-terminal charging identification device body via the charging gun wire of the charging gun head. The preset contact portion is used to control the on / off state of the contact switch sensor. Therefore, this application can realize the detection of multi-gun insertion, improve the reliability and practicality of the multi-terminal charging identification device, and is low in cost. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the structure of a multi-terminal charging identification device provided in this application embodiment. Figure 1 ;

[0022] Figure 2 A schematic diagram of the structure of a multi-terminal charging identification device provided in this application embodiment. Figure 2 ;

[0023] Figure 3 A schematic diagram of the structure of a multi-terminal charging identification device provided in this application embodiment. Figure 3 ;

[0024] Figure 4 A schematic diagram of the structure of a multi-terminal charging identification device provided in this application embodiment. Figure 4 ;

[0025] Figure 5 A schematic diagram of the structure of a multi-terminal charging identification device provided in this application embodiment. Figure 5 ;

[0026] Figure 6 A schematic diagram of the structure of a multi-terminal charging identification device provided in this application embodiment. Figure 6 ;

[0027] Figure 7 A schematic diagram of the structure of a multi-terminal charging identification device provided in this application embodiment. Figure 7 ;

[0028] Figure 8A schematic diagram of the structure of a multi-terminal charging identification device provided in this application embodiment. Figure 8 ;

[0029] Figure 9 This is a schematic diagram of the structure of a charging gun head provided in an embodiment of this application;

[0030] Figure 10 A schematic diagram of the structure of a multi-terminal charging identification device provided in this application embodiment. Figure 9 . Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0038] To better understand the solutions provided in the embodiments of this application, the following detailed description of a gun insertion detection device and a multi-terminal charging identification device provided in the embodiments of this application will be provided in conjunction with the accompanying drawings.

[0039] Figure 1 A schematic diagram of the structure of a multi-terminal charging identification device provided in this application embodiment. Figure 1 .like Figure 1 As shown, the multi-terminal charging identification device 200 may include: a multi-terminal charging identification device body 210 and at least two charging gun heads 220.

[0040] Each charging gun head 220 is equipped with a plug-in detection device 100, which is used to detect the connection signal between the vehicle and each charging gun head 220.

[0041] The multi-terminal charging identification device body 210 may include a power module 211 and a control module 212.

[0042] The power module 211 has an input terminal connected to a preset external power supply to provide an operational electrical signal to the multi-terminal charging identification device 210. The control terminal of the power module 211 is connected to the control module 212 for controlling the power module 211. The main power circuit of the power module 211's output terminal is connected to the power lines of at least two charging gun lines via at least two branch power circuits to provide power signals to the power lines of the at least two charging gun lines. The control module 212 is also connected to the signal lines of at least two charging gun lines, and each of the at least two charging gun lines is connected to at least two charging gun heads 220 to transmit the connection signals detected by the at least two charging gun heads 220 to the control module 212. The preset external power supply can be selected according to actual conditions and is not limited here.

[0043] The power module 211 can be selected according to the actual situation; for example, the power module 211 can be selected as an AC / DC module group. The multi-terminal charging identification device body 210 can be selected according to the actual situation; for example, the multi-terminal charging identification device body 210 can be selected as a charging pile.

[0044] It should be noted that, Figure 1 Solid lines in the diagram represent power lines, and dashed lines represent signal lines.

[0045] The multi-terminal charging identification device provided in this application consists of a multi-terminal charging identification device body and at least two charging gun heads. Each charging gun head is equipped with a plug-in detection device for detecting the connection signal between the vehicle and each charging gun head 220. The multi-terminal charging identification device body can be composed of a power module and a control module. The input end of the power module is used to connect to a preset external power source, and the main power circuit of the power module's output end is connected to the power lines of at least two charging gun lines through at least two branch power circuits to provide power signals. The control module is also connected to the signal lines of at least two charging gun lines, and the at least two charging gun lines are respectively connected to at least two charging gun heads to collect connection signals. Therefore, the multi-terminal charging identification device provided in this application can automatically identify the connection signals of multiple charging gun heads and switch power.

[0046] The following description, in conjunction with the accompanying drawings, illustrates the multi-terminal charging identification device provided in the embodiments of this application. Figure 2 A schematic diagram of the structure of a multi-terminal charging identification device provided in this application embodiment. Figure 2 .like Figure 2 As shown, the multi-terminal charging identification device body 210 may further include: at least two sets of first contactors 213.

[0047] Among them, at least two sets of first contactors 213 are respectively installed on at least two branch power circuits, and at least two sets of first contactors 213 are also connected to control module 212 for controlling the power lines of charging gun lines connected on at least two branch power circuits.

[0048] Among them, the two sets of first contactors 213 are composed of two contactors of the same material and signal, such as Figure 2 The system includes contactors GK1 and GK2. Contactor GK1 is used to control the connection of the DC+ power line on the branch power circuit, and contactor GK2 is used to control the connection of the DC- power line on the branch power circuit.

[0049] It should be noted that the two sets of first contactors 213 connected by the control module 212 open and close simultaneously.

[0050] The multi-terminal charging identification device provided in this application further includes: at least two sets of first contactors, which are respectively disposed on at least two branch power circuits. The at least two sets of first contactors are also connected to a control module for controlling the power lines of the charging gun lines connected on the at least two branch power circuits, thus providing a basis for the realization of power switching of multiple charging gun heads.

[0051] The following description, in conjunction with the accompanying drawings, illustrates the multi-terminal charging identification device provided in the embodiments of this application. Figure 3 A schematic diagram of the structure of a multi-terminal charging identification device provided in this application embodiment. Figure 3 .like Figure 3 As shown, the multi-terminal charging identification device body 210 may further include: a set of second contactors 214.

[0052] The second contactor 214 is installed on the main power circuit and is also connected to the control module 212 for controlling the main power circuit to supply power to at least two connected branch power circuits.

[0053] One set of second contactors 214 consists of three contactors of the same material and signal, such as... Figure 3 The circuit consists of contactors K1, K2, and K3. Contactor K1 is used to control the connection of the DC+ power line in the main power circuit, contactor K2 is used to control the connection of the DC- power line in the main power circuit, and contactor K3 is used to control the connection of the PE power line in the main power circuit.

[0054] It should be noted that the set of second contactors 214 connected by the control module 212 are simultaneously open and closed.

[0055] The multi-terminal charging identification device provided in this application also includes: a set of second contactors, which are disposed on the main power circuit and are also connected to a control module for controlling the main power circuit to supply power to at least two connected branch power circuits, thus providing a basis for the realization of power switching of multiple charging gun heads.

[0056] The following description, in conjunction with the accompanying drawings, illustrates the multi-terminal charging identification device provided in the embodiments of this application. Figure 4 A schematic diagram of the structure of a multi-terminal charging identification device provided in this application embodiment. Figure 4 .like Figure 4 As shown, the multi-terminal charging identification device body 210 may also include a fuse FU.

[0057] The fuse FU is installed on the DC+ power line of the main power circuit to protect the safety of multiple branch power circuits.

[0058] The multi-terminal charging identification device provided in this application may also be composed of a fuse. The fuse is installed on the DC+ power line of the main power circuit to protect the safety of multiple branch power circuits, thus providing a basis for the realization of power switching of multiple charging guns.

[0059] The following description, in conjunction with the accompanying drawings, illustrates the multi-terminal charging identification device provided in the embodiments of this application. Figure 5 A schematic diagram of the structure of a multi-terminal charging identification device provided in this application embodiment. Figure 5 .like Figure 5 As shown, the multi-terminal charging identification device body 210 may further include: a first circuit breaker SK.

[0060] The power module 211 is connected to the first circuit breaker SK, which is used to connect to a preset external power supply and to control the power module 211 to provide an operating electrical signal. The first circuit breaker SK is also connected to the control module 212, which is used to control the opening and closing of the first circuit breaker SK.

[0061] The first circuit breaker SK can be selected according to the actual situation. For example, the first circuit breaker SK can be selected as an SK molded case circuit breaker.

[0062] The multi-terminal charging identification device provided in this application may also be composed of a first circuit breaker. The input terminal of the power module is connected to the first circuit breaker. The first circuit breaker is used to connect to a preset external power supply to provide an input electrical signal to the power module. The first circuit breaker is also connected to a control module to control the opening and closing of the first circuit breaker. When the multi-terminal charging identification device malfunctions, it can cooperate with fuses and other devices to quickly cut off the fault current and prevent the accident from escalating, thereby ensuring the safe operation of the multi-terminal charging identification device and providing a foundation for the realization of power switching of multiple charging guns.

[0063] The following description, in conjunction with the accompanying drawings, illustrates the multi-terminal charging identification device provided in the embodiments of this application. Figure 6 A schematic diagram of the structure of a multi-terminal charging identification device provided in this application embodiment. Figure 6 .like Figure 6 As shown, the multi-terminal charging identification device body 210 may also include a surge protector (SPD).

[0064] The surge protector SPD is connected to the input terminal of the power module 211 to protect the power module 211 from transient overvoltages generated by a preset external power supply or other components. The surge protector SPD is also connected to the control module 212 to control the on / off state of the surge protector SPD.

[0065] The multi-terminal charging identification device provided in this application may also be composed of a surge protector. The surge protector is connected to the input terminal of the power module and is also connected to the control module. It protects the power module from transient overvoltages generated by a preset external power supply or other components, thereby improving the reliability, stability and safety of the electrical system.

[0066] The following description, in conjunction with the accompanying drawings, illustrates the multi-terminal charging identification device provided in the embodiments of this application. Figure 7 A schematic diagram of the structure of a multi-terminal charging identification device provided in this application embodiment. Figure 7 .like Figure 7 As shown, the multi-terminal charging identification device body 210 may also include: a second circuit breaker Q1.

[0067] The surge protector SPD is connected to the input terminal of the power module 211 via the second circuit breaker Q1 for overload, short circuit or leakage protection; the second circuit breaker Q1 is also connected to the control module 212 for controlling the opening and closing of the second circuit breaker Q1.

[0068] The second circuit breaker Q1 can also be selected according to the actual situation. For example, the second circuit breaker Q1 can be selected as a Q miniature circuit breaker.

[0069] The multi-terminal charging identification device provided in this application may further consist of a second circuit breaker. A surge protector is connected to the input terminal of the power module via the second circuit breaker for overload, short circuit, or leakage protection. The second circuit breaker is also connected to a control module for controlling its on / off state. Therefore, the multi-terminal charging identification device provided in this application can operate safely and stably.

[0070] The following description, in conjunction with the accompanying drawings, illustrates the gun insertion detection device provided in the embodiments of this application. Figure 8 A schematic diagram of the structure of a multi-terminal charging identification device provided in this application embodiment. Figure 8 .like Figure 8 As shown, the plug-in detection device 100 is installed inside the charging gun head 220 of the multi-terminal charging identification device 200. The plug-in detection device 100 may include a contact switch sensor 110.

[0071] The contact switch sensor 110 is connected to the multi-terminal charging identification device body 210 of the multi-terminal charging identification device 200 via the charging gun cable of the charging gun head 220. The preset contact portion of the contact switch sensor 110 protrudes from the insertion contact surface of the charging gun head 220. The preset contact portion is used to control the on / off state of the contact switch sensor 110. This preset contact portion can be selected according to the actual situation, and no restrictions are imposed here.

[0072] For example, this application also provides a schematic diagram of a contact switch sensor 110 on a charging gun head 220. Figure 9 This is a schematic diagram of a charging gun head provided in an embodiment of this application. Figure 9 The white protrusions shown are the preset contact points of the contact switch sensor 110.

[0073] It should be noted that the above Figure 9 The embodiments described herein are merely illustrative of a preset contact portion of the contact switch sensor 110 and should not be construed as limiting the scope of this application.

[0074] This application provides a charging gun detection device, which is installed inside the charging gun head of a multi-terminal charging identification device. The device can be composed of a contact switch sensor, with a preset contact portion protruding from the insertion contact surface of the charging gun head. The contact switch sensor is connected to the multi-terminal charging identification device body via the charging gun wire of the charging gun head. The preset contact portion controls the on / off state of the contact switch sensor. Therefore, this application not only enables the detection of multi-gun insertion devices but also improves the reliability and practicality of the multi-terminal charging identification device, while maintaining low cost.

[0075] Figure 10 A schematic diagram of the structure of a multi-terminal charging identification device provided in this application embodiment. Figure 9 .like Figure 10 As shown, one end of the contact switch sensor 110 is connected to a preset power supply VCC inside the multi-terminal charging identification device body 210 to provide the contact switch sensor 110 with an operating voltage; the preset power supply VCC can be selected according to the actual situation, for example, the preset power supply can be selected as a 12V or 24V power supply.

[0076] The other end of the contact switch sensor 110 is connected to the control module 212 inside the multi-terminal charging identification device body 210. The preset contact part is used to control the on / off state between one end and the other end of the contact switch sensor 110.

[0077] For example, when the preset contact portion of the contact switch sensor 110-1 is not connected to the preset vehicle socket, it indicates that the contact switch sensor 110-1 is in an open state. At this time, the control module 212 receives the voltage signal of the contact switch sensor 110-1. If the control module 212 does not detect the voltage signal of the contact switch sensor 110-1, it determines that the contact switch sensor 110-1 is in a disconnected state with the preset vehicle socket, that is, the on / off state of the contact switch sensor 110-1 is the unplugged state. When the preset contact portion of the contact switch sensor 110-1 is connected to the preset vehicle socket, it indicates that the contact switch sensor 110-1 is in a closed state. At this time, the control module 212 receives the voltage signal of the contact switch sensor 110-1 and determines that the contact switch sensor 110-1 is in a closed state with the preset vehicle socket, that is, the on / off state of the contact switch sensor 110-1 is the plugged-in state.

[0078] The charging gun detection device proposed in this application has one end of a contact switch sensor connected to a preset power supply inside the multi-terminal charging identification device body, and the other end of the contact switch sensor connected to a control unit inside the multi-terminal charging identification device body. The preset contact part is used to control the on / off state between one end and the other end of the contact switch sensor, and to transmit the voltage signal collected by the contact switch sensor to the control module. The control module uses the voltage signal to determine whether the charging gun head is fully connected to the preset vehicle socket, and then sends a control signal to the contactor on the corresponding branch power circuit, such as two sets of first contactors, to control the contact mechanism of the two sets of first contactors to close, thereby realizing the automatic identification of the charging gun and the switching of the power circuit of the multi-terminal charging identification device.

[0079] Optionally, in one possible embodiment, the contact switch sensor may be a limit switch, which automatically switches between circuits based on the magnitude of the contact force at a preset contact point. This limit switch has high detection accuracy, high stability, and high safety.

[0080] Furthermore, to facilitate understanding of the aforementioned plug-in detection device and multi-terminal charging identification device, this application embodiment also provides an example of a plug-in switching method, which may include:

[0081] The first step is for the multi-terminal charging identification device to perform a power-on self-test; the second step is to check whether the first charging gun cable is connected to the preset vehicle socket. If yes, proceed to the third step; otherwise, proceed to the fourth step.

[0082] Thirdly, if the first charging gun line is connected to the preset vehicle socket, the contact switch sensor corresponding to the first charging gun line will send a high-level signal to the control unit in the multi-terminal charging identification device. The control unit determines that the first charging gun head corresponding to the first charging gun line has been inserted into place, and then closes the two sets of first contactors GK1 and GK2 in the branch power circuit corresponding to the first charging gun line. Then, according to the preset charging and discharging requirements, it first turns on the power module (such as an AC / DC module), and then closes a set of second contactors (such as contactors K1, K2, and K3) on the main power circuit to perform the charging operation on the preset vehicle. The preset charging and discharging requirements can be selected according to the actual situation. Fourth step: If the first charging gun line is not connected to the preset vehicle socket, that is, the contact switch sensor corresponding to the first charging gun line sends a low-level signal to the control unit in the multi-terminal charging identification device. The control unit determines that the first charging gun head corresponding to the first charging gun line is not inserted in place, and then disconnects the two sets of first contactors GK1 and GK2 of the branch power circuit corresponding to the first charging gun line. Then it checks whether the second charging gun line is connected to the preset vehicle socket. If yes, proceed to the fifth step; if not, proceed to the sixth step.

[0083] Step 5: If the second charging gun cable is connected to the preset vehicle socket, the contact switch sensor corresponding to the second charging gun cable sends a high-level signal to the control unit in the multi-terminal charging identification device. The control unit determines that the second charging gun head corresponding to the second charging gun cable is properly inserted, and then closes the two sets of first contactors GK3 and GK4 in the branch power circuit corresponding to the second charging gun cable to charge the preset vehicle. Step 6: If the second charging gun cable is connected to the preset vehicle socket, the contact switch sensor corresponding to the second charging gun cable sends a low-level signal to the control unit in the multi-terminal charging identification device. The control unit determines that the second charging gun head corresponding to the second charging gun cable is not properly inserted, and then disconnects the two sets of first contactors GK3 and GK4 in the branch power circuit corresponding to the second charging gun cable. Then it checks whether there are other charging gun cables connected to the preset vehicle socket. If not, it first disconnects one set of second contactors on the main power circuit (such as contactors K1, K2, and K3), and then turns off the power module (such as the AC / DC module). At this time, the multi-terminal charging identification device is in a powered-off state. If not, it continues to judge according to step 4.

[0084] It should be noted that the first and second charging gun lines are for illustrative purposes only and should not be construed as limiting the scope of this application.

[0085] The charging gun switching method provided in this application embodiment can detect whether the first charging gun wire is connected to a preset vehicle socket through a power-on self-test of the multi-terminal charging identification device. If the first charging gun wire is connected to the preset vehicle socket, the two sets of first contactors of the branch power circuit corresponding to the first charging gun wire are closed; if the first charging gun wire is not connected to the preset vehicle socket, it detects whether the second charging gun wire is connected to the preset vehicle socket; if the second charging gun wire is connected to the preset vehicle socket, the two sets of first contactors of the branch power circuit corresponding to the second charging gun wire are closed; if the second charging gun wire is connected to the preset vehicle socket, the two sets of first contactors of the branch power circuit corresponding to the second charging gun wire are disconnected. Therefore, this application can realize automatic identification of multiple charging gun heads and automatic switching of power circuits in the multi-terminal charging identification device, eliminating the need for manual observation and control of contactor closure to switch power circuits, reducing labor costs and improving operational safety.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A gun insertion detection device, characterized in that, The insertion detection device is installed inside the charging gun head of the multi-terminal charging identification device. The insertion detection device includes a contact switch sensor. The preset contact portion of the contact switch sensor protrudes from the insertion contact surface of the charging gun head. The contact switch sensor is connected to the multi-terminal charging identification device body of the multi-terminal charging identification device through the charging gun wire of the charging gun head. The preset contact portion is used to control the on / off state of the contact switch sensor.

2. The gun insertion detection device according to claim 1, characterized in that, One end of the contact switch sensor is connected to a preset power source within the multi-terminal charging identification device body, and the other end of the contact switch sensor is connected to a control unit within the multi-terminal charging identification device body. The preset contact portion is used to control the on / off state between one end and the other end of the contact switch sensor.

3. The gun insertion detection device according to claim 1 or 2, characterized in that, The contact-type switch sensor is a limit switch.

4. A multi-terminal charging identification device, characterized in that, include: The multi-terminal charging identification device body comprises at least two charging gun heads, wherein each charging gun head is provided with a charging gun detection device as described in any one of claims 1 to 3. The multi-terminal charging identification device body includes a power module and a control module. The input terminal of the power module is used to connect to a preset external power source, and the control terminal of the power module is connected to the control module. The main power circuit of the output terminal of the power module is connected to the power lines of the at least two charging gun lines through at least two branch power circuits. The control module is also connected to the signal lines of the at least two charging gun lines, and the at least two charging gun lines are respectively connected to the at least two charging gun heads.

5. The multi-terminal charging identification device according to claim 4, characterized in that, The multi-terminal charging identification device also includes at least two sets of first contactors. The at least two sets of first contactors are respectively disposed on the at least two branch power circuits, and the at least two sets of first contactors are also connected to the control module.

6. The multi-terminal charging identification device according to claim 4, characterized in that, The multi-terminal charging identification device also includes a set of second contactors, which are disposed on the main power circuit and are also connected to the control module.

7. The multi-terminal charging identification device according to claim 4, characterized in that, The multi-terminal charging identification device also includes a fuse, which is disposed on the main power circuit.

8. The multi-terminal charging identification device according to claim 4, characterized in that, The multi-terminal charging identification device body also includes: a first circuit breaker, the input terminal of the power module is connected to the first circuit breaker, the first circuit breaker is used to connect to the preset external power supply, and the first circuit breaker is also connected to the control module.

9. The multi-terminal charging identification device according to claim 4, characterized in that, The multi-terminal charging identification device also includes a surge protector, which is connected to the input terminal of the power module.

10. The multi-terminal charging identification device according to claim 9, characterized in that, The multi-terminal charging identification device also includes a second circuit breaker, through which the surge protector is connected to the input terminal of the power module, and the second circuit breaker is also connected to the control module.

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