Charging gun, charging device and charging system for charging vehicle

Abstract

The utility model relates to a charging gun used for charging a vehicle, the charging gun (1) comprises a gun body (2) and a charging stop switch (7) integrated in or on the gun body, the charging stop switch is configured to trigger a charging stop signal when being operated, a wireless communication unit (20) and a control unit (30) are also arranged in the gun body (2), and the wireless communication unit (20) is connected with the control unit (30). The wireless communication unit (20) is configured to detect a wireless signal assigned to a permission device of the vehicle, and the control unit (30) is configured to allow the transmission of the charging stop signal to the connected charging device (300) for stopping the charging process only if the wireless communication unit (20) detects the wireless signal. In addition, the utility model also relates to a charging device and a charging system. According to the utility model, convenience and intuition of user operation are improved, charging stop can only be operated by authorized users, and malicious operation of others is eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle charging, and in particular to a charging gun for charging a vehicle, a charging device for charging a vehicle, and a charging system. Background Art

[0002] In the field of vehicle charging technology, it is usually required to equip DC charging interfaces and AC charging interfaces with a rated current exceeding 16A with a locking device to keep the charging interface in the normal connection position, prevent the charging interface from disconnecting under load, ensure that the charging gun is not charged before being unplugged, and protect the safety of users. In order to unplug the charging gun, such a locking device should be unlocked first. In order to unlock the locking device, it is known from the prior art that the user must first operate inside the vehicle (such as the center console of the vehicle), the charging device or the mobile device (such as the App of the mobile device) to stop charging, and such operation may require the user to travel back and forth between the charging gun and the vehicle and / or the charging device, which brings inconvenience and damages the user experience.

[0003] In order to solve this inconvenience, the Chinese utility model patent application with application number 202420395498.5 of the present applicant discloses a charging gun with an integrated charging stop switch, which can improve the user experience when operating the charging stop. However, in such a solution, it may still be disadvantageous that the charging stop switch that brings convenience to the operation may be maliciously operated by others, thereby damaging the interests of the user and causing inconvenience in travel. Utility Model Content

[0004] The utility model aims to provide a charging gun, a charging device and a charging system for charging a vehicle, wherein the convenience and intuitiveness of user operation are improved while ensuring that charging stop can only be operated by authorized users and excluding malicious operations by others.

[0005] A first aspect of the utility model relates to a charging gun for charging a vehicle, the charging gun comprising: a gun body and a charging stop switch integrated in or on the gun body, the charging stop switch being configured to trigger a charging stop signal when operated, wherein a wireless communication unit and a control unit are also provided in the gun body, the wireless communication unit being configured to detect a wireless signal of an authority device assigned to the vehicle, and the control unit being configured to allow the charging stop signal to be transmitted to a connected charging device to stop the charging process only when the wireless communication unit detects the wireless signal.

[0006] Within the scope of the present invention, a vehicle can be understood as an electric vehicle (EV), in particular a pure electric vehicle (BEV) and a hybrid electric vehicle (HEV), such as a plug-in hybrid vehicle (PHEV), etc. A charging socket is provided in the vehicle, into which a charging gun according to the present invention can be inserted when charging the vehicle.

[0007] According to national standards, a locking device is provided for the DC charging interface used to charge the vehicle and the AC charging interface with a rated current exceeding 16A. The locking device is configured to keep the charging interface in the normal connection position, prevent the charging interface from being disconnected under load, ensure that the charging gun is not charged before being unplugged, and protect the user's safety. According to the utility model, in order to improve the user experience when operating the charging stop operation and avoid the user from going back and forth between the charging gun and the interior of the vehicle and / or the charging device in order to stop charging, a charging stop switch is integrated in or on the gun body of the charging gun. It is provided here that the charging stop switch is configured to trigger a charging stop signal when it is operated. Such a signal can in particular notify the charging device connected to the charging gun to stop supplying power to the vehicle.

[0008] In order to ensure that the charging stop can only be operated by authorized users and exclude malicious operations by others, according to the provisions of the utility model, a wireless communication unit and a control unit are also provided in the gun body, the wireless communication unit is configured to detect the wireless signal of the authorization device assigned to the vehicle, and the control unit is configured to allow the charging stop signal to be transmitted to the connected charging device to stop the charging process only when the wireless communication unit detects the wireless signal. By setting the wireless communication unit and the control unit, it is ensured that only when the user carrying the authorization device assigned to the vehicle operates the charging stop switch, the wireless communication unit can detect the wireless signal of the authorization device, so that the control unit allows the charging stop signal triggered by the charging stop switch to be transmitted to the charging device, and the charging device will accordingly interrupt the power supply to the vehicle or stop the charging process. In response to the charging process stopping, the locking device arranged in the charging gun moves to an unlockable position, and the locking can be released by pressing the unlocking button on the charging gun, so that the charging gun can be safely pulled out from the charging socket without load. When a user who does not carry an authorized device operates the charging stop switch, the wireless communication unit cannot detect the wireless signal of the authorized device, so the control unit blocks the transmission of the charging stop signal to the charging device, and then the charging device will not interrupt the supply of power to the vehicle or the charging process will not stop.

[0009] The charging gun specified in the present invention can ensure that only authorized users can operate the charging stop switch to stop charging, while other people who do not have the authorization device cannot maliciously operate the charging stop switch to stop charging. This ensures the reliability of charging and prevents unauthorized abuse of the charging stop switch, ensuring the user's management and control over the charging process. In particular, the user stops the charging process before charging is completed usually because the user wants to use the vehicle immediately, especially drive the vehicle to set off or enter the interior of the vehicle. In this case, the user also needs to carry the authorization device assigned to the vehicle. Therefore, the present invention also conforms to the general habits of users and does not bring additional burdens to the user's operation.

[0010] According to an embodiment of the present invention, the wireless signal is a radio frequency identification (RFID) signal, a Bluetooth signal, a near field communication signal, a Zigbee signal or a WiFi signal. Here, the wireless signal can be adapted to a common communication method of an authorization device provided to the vehicle, wherein the Bluetooth signal can be a Bluetooth low energy (BLE) signal in particular.

[0011] According to one embodiment of the utility model, the authority device includes a vehicle key or a smart card, or the authority device is integrated in a mobile terminal. In the utility model, the authority device is an identity authentication device for identifying user authority. The authority device can be implemented as a vehicle key, or an electronic key or a remote control key or a wireless key, which can be used to unlock and especially start the vehicle. Not limited to this, the authority device can also be implemented as a card with a chip, which can store encrypted identity information and control signals for communication and identity authentication with the electronic system of the vehicle. In addition, the authority device can be integrated in a mobile terminal, in particular, the key information is stored on the mobile terminal, and the key information generally includes encrypted identity information, control signals, etc. When the user approaches the vehicle, the mobile terminal can be wirelessly connected to the vehicle to verify the key information in the mobile terminal.

[0012] According to one embodiment of the utility model, the charging stop switch is a normally open mechanical switch or an inductive switch. Here, a normally open mechanical switch refers to a switch that realizes the on-off of a circuit through a mechanical structure, which has a moving contact and a static contact, and the switch remains in an off state without external influence; while a normally open inductive switch is a switch that controls the on-off of a circuit by sensing changes in external objects, especially the touch or approach of a human body, through a sensing device, and it remains in an off state when there is no change in external objects, especially the touch or approach of a human body. Exemplarily, the mechanical switch can be configured as a self-resetting lever switch, a rocker switch, a press switch, a micro switch or a membrane switch. The inductive switch can be configured as a capacitive inductive switch, a resistive inductive switch, an infrared inductive switch, a microwave inductive switch, an acoustic wave inductive switch or a piezoelectric inductive switch.

[0013] According to an embodiment of the utility model, the charging stop switch is integrated in or on the unlocking button of the locking device of the charging gun. Particularly advantageously, the charging stop switch is integrated with the unlocking button, so that when the user attempts to operate the unlocking button, especially presses, touches or approaches the unlocking button to pull out the charging gun, the charging stop switch can be operated at the same time, which conforms to the user's usage habits and intuitive understanding, and enhances the intuitiveness of the user's operation.

[0014] According to one embodiment of the utility model, the control unit is implemented as a switch circuit, a relay or a programmable logic controller (PLC). Here, the control unit can, for example, receive an input signal from a wireless communication unit indicating whether a wireless signal is detected, and control the transmission of a charging stop signal to the charging device accordingly. In the simplest case, the control unit can be implemented as a switch circuit or a relay, which can be controlled by the input signal level to connect or disconnect the signal connection to the charging device.

[0015] According to an embodiment of the utility model, a photoelectric coupler circuit for triggering and transmitting a charging stop signal is provided in the charging gun, the charging stop switch is connected to the input stage of the photoelectric coupler circuit, the control unit turns on or off the power supply of the phototransistor in the output stage of the photoelectric coupler circuit based on whether the wireless communication unit receives the wireless signal, and the output stage of the photoelectric coupler circuit is connected to the charging communication signal line and / or the charging connection confirmation signal line. Exemplarily, the output stage of the photoelectric coupler circuit can be connected to the charging communication signal line S+, the charging communication signal line S-, the charging connection confirmation signal line CC1 and / or the charging connection confirmation signal line CC2. Taking the connection to the charging connection confirmation signal line CC1 as an example, when the charging stop switch is triggered, if the wireless communication unit detects the wireless signal of the corresponding authority device at this time, the control unit will turn on the power supply of the phototransistor in the output stage of the photoelectric coupler circuit, so that the charging stop signal can be input into the charging connection confirmation signal line CC1, thereby the CC1 signal is placed at a low potential, and the charging device stops the charging process immediately after detecting the charging stop signal on the charging connection confirmation signal line CC1. Here, by using a photocoupler circuit, a charging stop signal can be generated in an anti-electromagnetic interference manner and the electrical isolation of the circuit can be effectively achieved to ensure power safety. Moreover, since the response speed of the photocoupler is very fast, the signal transmission and conversion can be completed within nanoseconds. This high-speed response characteristic makes the photocoupler circuit helpful to quickly stop the charging process.

[0016] According to an embodiment of the utility model, the wireless communication unit is configured to detect a wireless signal of an authorization device assigned to a single vehicle; and / or the communication unit is configured to detect a wireless signal of an authorization device assigned to multiple vehicles. Here, the wireless communication unit can be specifically configured to detect a wireless signal of an authorization device of a single vehicle, or can be relatively generally configured to detect a wireless signal of an authorization device of a series of vehicles, such as all vehicles of a model or all vehicles of a vehicle manufacturer. Exemplarily, the wireless communication unit can be configured to detect a single frequency or can be used to detect one or more frequency bands.

[0017] A second aspect of the present invention relates to a charging device, which includes a charging gun for charging a vehicle according to the first aspect of the present invention.

[0018] A third aspect of the utility model relates to a charging device, wherein the charging device for charging a vehicle comprises a charging gun, a charging stop switch is integrated on the gun body of the charging gun, the charging stop switch is configured to activate a charging stop signal when operated and transmit the charging stop signal to a connected charging device, the charging device comprises a charging control device and a wireless communication device, the wireless communication device is configured to detect a wireless signal of an authority device assigned to the vehicle, and the charging control device is configured to allow the charging process to be stopped based on the charging stop signal only when the wireless communication device detects the wireless signal.

[0019] Different from the aforementioned first aspect, in the third aspect of the utility model, a wireless communication unit and a control unit may not be provided in the gun body of the charging gun. The charging stop switch is configured to activate a charging stop signal when operated and always transmit the charging stop signal to the connected charging device. Here, in order to ensure that charging stop can only be operated by authorized users and exclude malicious operations by others, the charging device includes a charging control device and a wireless communication device. The charging control device and the wireless communication device in the charging device can function similarly to the control unit and the wireless communication unit in the aforementioned first aspect. Thus, only when a user carrying an authorization device assigned to the vehicle operates the charging stop switch, the wireless communication device can detect the wireless signal of the authorization device, and thus the charging control device allows the interruption of power supply to the vehicle or the stopping of the charging process based on the charging stop signal.

[0020] According to an implementation mode of the utility model, the wireless signal is a radio frequency identification signal, a Bluetooth signal, a near field communication signal, a Zigbee signal or a WiFi signal sent by a vehicle key, a smart card or a mobile terminal as an authorization device.

[0021] According to an embodiment of the utility model, the wireless communication device is configured to detect a wireless signal of an authorization device assigned to a single vehicle; and / or the wireless communication device is configured to detect a wireless signal of an authorization device assigned to multiple vehicles. Here, the wireless communication device can also be specifically configured to detect a wireless signal of an authorization device of a single vehicle, or can be relatively generally configured to detect a wireless signal of an authorization device of a series of vehicles, such as all vehicles of a model or all vehicles of a vehicle manufacturer. Exemplarily, the wireless communication device can be configured to detect a single frequency or can be used to detect one or more frequency bands.

[0022] According to an embodiment of the utility model, the wireless communication device is configured to authenticate the wireless signal of the authorization device. Here, the wireless communication device can encrypt and decrypt the communication signal and thus reliably verify the user identity, thereby ensuring security to the maximum extent.

[0023] According to an embodiment of the present invention, the charging device is configured as a private charging device or a public charging device. The private charging device may be, for example, a private charging post or a private wall box assigned to a specific vehicle or a limited number of vehicles of a user, while the public charging device may be a public charging post, in particular a public charging post dedicated to a certain vehicle manufacturer, or a charging device in a charging station dedicated to a certain vehicle manufacturer.

[0024] A third aspect of the present invention relates to a charging system, the charging system comprising a vehicle and comprising:

[0025] The charging gun according to the first aspect of the utility model; or

[0026] The charging device according to the second aspect of the utility model; or

[0027] A third aspect of the present invention provides a charging device for charging a vehicle.

[0028] It should be noted that the features, functions, effects and advantages of one aspect of the present invention can also refer to the above description of other aspects of the present invention. In addition, the various aspects described in the present invention can be combined with each other in various ways. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a perspective view of a charging gun for charging a vehicle according to an embodiment of the utility model;

[0030] Figure 2 yes Figure 1 An exploded view of the charging gun in the ;

[0031] Figure 3 is a schematic block diagram of a circuit portion of a charging gun for charging a vehicle according to an embodiment of the utility model;

[0032] Figure 4 A photoelectric coupler circuit for triggering and transmitting a charging stop signal of a charging gun according to an embodiment of the utility model; and

[0033] Figure 5 It is a schematic diagram of a charging system according to an embodiment of the utility model. DETAILED DESCRIPTION

[0034] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. In each of the drawings, the same or functionally identical elements are provided with the same reference numerals. It should be understood by those skilled in the art that the various embodiments shown are only used to illustrate the principles of the present invention, and are not used to limit the scope of protection of this application. The present invention can be implemented in a variety of other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the principles of the present invention.

[0035] The expression "and / or" as used herein means including at least one of the components listed before and after the expression. Furthermore, the expressions "connected", "connected" and the like are used to mean including direct connection with another component, or indirect connection through another component, such as a cable, etc. The singular form herein also includes the plural form, unless specifically mentioned in the wording. Furthermore, the components, steps, operations and elements referred to as "including" or "comprising" used herein mean that at least one other component, step, operation and element exists or is added.

[0036] Figure 1 A perspective view of a charging gun 1 for charging a vehicle according to an embodiment of the present invention is shown. Here, various embodiments of the present invention are described by taking a DC charging gun as an example. Without limitation, the charging gun according to the present invention can also be used for AC charging with a rated current exceeding 16A. Figure 1As shown, the charging gun 1 includes a gun body 2 and a gun head 3 located at the head of the gun body 2. A plurality of, for example, nine charging terminals are arranged in the gun head 3. When the charging gun 1 is plugged into the charging socket of the vehicle, that is, when the charging interface is in the normal connection position, each charging terminal is electrically connected to the corresponding charging port in the charging socket. Exemplarily, the nine terminals may include: a DC power terminal TDC+, a DC power terminal TDC-, a ground terminal TPE, a charging communication signal terminal TS+, a charging communication signal terminal TS-, a charging connection confirmation signal terminal TCC1, a charging connection confirmation signal terminal TCC2, a low-voltage auxiliary power terminal TA+ and a low-voltage auxiliary power terminal TA-. These charging terminals in the charging gun 1 are respectively connected to the charging port via the cable 4 at the tail of the charging gun 1. Figure 1 For example, the cable 4 is provided with a DC power line DC+, a DC power line DC-, a ground line PE, a charging communication signal line S+, a charging communication signal line S-, a charging connection confirmation signal line CC1, a charging connection confirmation signal line CC2, a low voltage auxiliary power line A+ and a low voltage auxiliary power line A-.

[0037] exist Figure 1 Although not shown in detail, the charging gun 1 also includes a locking device received in the gun body 2. Such a locking device can keep the charging interface established by the charging gun and the charging socket in the normal connection position, prevent the charging interface from being disconnected under load, ensure that the charging gun is not charged before being pulled out, and protect the safety of the user. Here, the locking device is located in the gun body 2 and is covered by the gun body upper cover 5 provided with the gun body 2. An opening 16 is left in the gun body upper cover 5 to expose the unlocking button 6 of the locking device. When the charging gun 1 is powered off or not loaded, the locking of the locking device can be released by pressing the unlocking button 6 of the locking device.

[0038] In order to stop charging and pull out the charging gun at any time according to the user's wishes during the charging process, the utility model particularly advantageously provides that a charging stop switch 7 is integrated in or on the gun body, and the charging stop switch 7 can trigger a charging stop signal when it is operated, such as being pressed or approached.

[0039] In order to ensure that only authorized users can operate the charge stop switch 7, and other people who do not have the authorization device cannot maliciously operate the charge stop switch 7 to stop charging, according to the provisions of the utility model, a wireless communication unit 20 and a control unit 30 represented by a dotted box are also provided in the gun body 2. The wireless communication unit 20 is configured to detect the wireless signal of the authorization device 400 equipped with the vehicle, and the control unit 30 is configured to allow the charge stop signal to be transmitted to the connected charging device (not shown) to stop the charging process only when the wireless communication unit 20 detects the wireless signal. Figure 1 , the communication between the wireless communication unit 20 and the authorization device 400 configured as a vehicle key is exemplarily shown in the form of radio waves. Exemplarily, the wireless signal may be a radio frequency identification signal, a Bluetooth signal, a near field communication signal, a Zigbee signal or a WiFi signal. However, it should be noted that the wireless communication unit 20 can be configured not only as a two-way interactive transceiver as shown in the figure, but also as a receiver having only a receiving function. The implementation of the wireless communication unit 20 may refer to a vehicle authentication unit for authenticating the authorization device 400, that is, simply receiving a wireless signal from the authorization device 400, or periodically sending an activation signal to the outside and receiving a wireless signal in response to the authorization device 400.

[0040] In the present invention, the wireless communication unit 20 and the control unit 30 are provided to ensure that only when the user carrying the authorization device 400 assigned to the vehicle operates the charging stop switch 7, the wireless communication unit 20 can detect the wireless signal of the authorization device 400, so that the control unit 30 allows the charging stop signal triggered by the charging stop switch 7 to be transmitted to the charging device 300 (not shown), and the charging device 300 accordingly interrupts the power supply to the vehicle 200 or stops the charging process. In response to the charging process stopping, the locking device arranged in the charging gun 1 moves to an unlockable position, and the locking can be released by pressing the unlocking button 6 on the charging gun 1, so that the charging gun 1 can be safely pulled out from the charging socket without load. When the user who does not carry the authorization device operates the charging stop switch 7, the wireless communication unit 20 cannot detect the wireless signal of the authorization device 400, so the control unit 30 blocks the transmission of the charging stop signal to the charging device 300, and then the charging device 300 will not interrupt the power supply to the vehicle or the charging process will not stop. This ensures the reliability of charging and prevents unauthorized abuse of the charging stop switch 7, thereby guaranteeing the user's management and control over the charging process.

[0041] Figure 2 Show Figure 1 Exploded view of the charging gun in the . Figure 2The figure mainly shows the locking device covered by the gun body upper cover 5 in the charging gun 1. The locking device is received in the gun body 2, and the locking device includes a locking rod 8 and a locking block 9. One end of the locking rod 8 is configured as a lock buckle 10, and the other end is configured with an unlocking button 6 that can cooperate with the lock block 9. When the charging gun 1 is inserted into the charging socket of the vehicle, the lock buckle 10 can be locked on the stopper in the charging socket. The middle part of the locking rod 8 is configured with a fulcrum that cooperates with the bracket 11 in the gun body 2, so that when the unlocking button 6 is pressed downward, the lock buckle 10 at the other end can be lifted, thereby releasing the lock between the lock buckle 10 and the stopper, and then the charging gun 1 can be pulled out from the charging socket. During the charging process, that is, when current flows through the charging interface, the lock block 9 of the locking device moves to the bottom of the unlocking button 6, so that the unlocking button 6 cannot be pressed, and thus the lock between the lock buckle 10 on the locking rod 8 and the stopper of the charging socket cannot be released, so that the charging gun 1 cannot be pulled out from the charging socket.

[0042] Here, the lock block 9 is implemented by an eccentric wheel. When the long axis end of the eccentric wheel moves under the unlocking button 6, the unlocking button 6 can be locked so that it cannot be pressed by the user. When the short axis end of the eccentric wheel moves under the unlocking button 6, the unlocking button 6 can be pressed. At this time, in order to maintain the position of the unlocking button 6, a return spring 15 is provided. In order to drive the eccentric wheel, a motor 13, in particular a reduction motor, is provided. The motor 13 is connected to the eccentric wheel through a shaft 14. The motor 13 is operated by the S switch 12. When the charging interface is not connected, the S switch 12 is turned on, the unlocking button 6 can be pressed, and the gun head 3 of the charging gun 1 can be inserted into the charging socket of the vehicle. After the charging gun 1 is engaged with the charging socket, the S switch 12 is closed, the unlocking button 6 is locked, the charging interface is fully connected and a reliable locking signal is fed back.

[0043] exist Figure 1 and Figure 2 A particularly advantageous embodiment of the present invention is also shown, that is, the charging stop switch 7 is integrated in or on the unlocking button 6 of the locking device of the charging gun 1. The charging stop switch 7 is configured to activate a charging stop signal when operated. This is particularly advantageous in that the user can simultaneously operate the charging stop switch 7 when attempting to operate the unlocking button 6, in particular pressing, touching or approaching the unlocking button 6 to pull out the charging gun 1. Exemplarily, the charging stop switch 7 can be a normally open mechanical switch or an inductive switch. However, it is not limited to Figure 1 and 2 In the illustrated case, the charging stop switch 7 may also be optionally arranged at other positions of the charging gun 1 , such as on the gun body 2 .

[0044] Figure 3It is a schematic block diagram of a circuit portion of a charging gun for charging a vehicle according to an embodiment of the utility model. Here, only the circuit block diagram of the utility model in the charging gun 1 is schematically shown, and the power supply connection of the charging gun is not involved. It can be seen here that the charging stop switch 7 configured as a manual switch is connected to the control unit 30 configured as a relay. The wireless communication unit 20 for detecting the wireless signal of the authorization device 400 is also connected to the control unit 30. Here, the wireless communication unit 20 inputs a high-level input signal to the control unit when detecting the wireless signal of the authorization device 400, so that the charging stop signal triggered by the charging stop switch 7 can be transmitted to the charging device not shown. Not limited to what is shown in the figure, the control unit can also be implemented as a switching circuit or a programmable logic controller (PLC).

[0045] Figure 4 It is a photoelectric coupler circuit for triggering and transmitting a charging stop signal of a charging gun according to the utility model. The photoelectric coupler circuit is divided into an input stage on the left and an output stage on the right by a photoelectric coupler OC. The photoelectric coupler OC includes a light-emitting diode LED and a phototransistor PT which are usually encapsulated in a housing. By using a photoelectric coupler OC, the influence of voltage surges caused by lightning, electrostatic discharge, radio frequency transmission, switching pulses and power supply disturbances can be avoided. As a result, the photoelectric coupler circuit can generate a charging stop signal in an anti-electromagnetic interference manner and effectively realize the electrical isolation of the circuit to ensure the safety of electricity use. Moreover, since the response speed of the photoelectric coupler OC is very fast, the transmission and conversion of the signal can be completed within nanoseconds. This high-speed response characteristic enables the photoelectric coupler circuit to help quickly stop the charging process.

[0046] The charge stop switch 7 is connected to the input stage of the photocoupler circuit. When the charge stop switch 7 is open, the input terminal ESTOP is at a low level; and when the charge stop switch 7 is closed, the input terminal ESTOP is at a high level. This high level turns on the light emitting diode LED of the photocoupler OC via the resistor R10.

[0047] The control unit 30 is connected to the upstream of the phototransistor PT in the output stage of the photocoupler circuit. Figure 4As shown, the control unit 30 can be configured as a relay that acts in response to an input signal from the wireless communication unit 20. Thus, the control unit 30 can turn on or off the power supply of the phototransistor PT in the output stage of the photocoupler circuit based on whether the wireless communication unit 20 receives the wireless signal. When the wireless communication unit 20 receives the wireless signal, the phototransistor PT is powered, so that the light emitted by the light-emitting diode LED turned on by the closing of the charging stop switch 7 can trigger the phototransistor PT to turn on, and then the level of the output terminal OUT in the output stage drops from Vcc to a low level. If the wireless communication unit 20 does not receive the wireless signal, the phototransistor PT will not be powered, and the light emitted by the light-emitting diode LED turned on by the closing of the charging stop switch 7 cannot trigger the phototransistor PT to turn on, and the level of the output terminal OUT is always kept at a high level.

[0048] Here, the output terminal OUT in the output stage of the photocoupler circuit can be connected to the charging communication signal line S+, the charging communication signal line S-, the charging connection confirmation signal line CC1 and / or the charging connection confirmation signal line CC2, so that the charging stop signal can be transmitted to the connected charging device. Exemplarily, when the wireless communication unit 20 receives the wireless signal of the authority device 400, when the charging stop switch 7 triggers the activation of the charging stop signal, the low level of the output terminal OUT causes the CC1 signal to be placed at a low potential, and the charging device can immediately stop the charging process after detecting the charging stop signal on the charging connection confirmation signal line CC1.

[0049] Advantageously, provision is made for the wireless communication unit 20 to be configured to detect wireless signals of an authorization device which is assigned to a single vehicle and / or for the wireless communication unit 20 to be configured to detect wireless signals of authorization devices which are assigned to a plurality of vehicles.

[0050] exist Figures 1 to 4 The charging gun 1 shown in FIG. 1 can be assigned in particular to a charging device and overall forms a charging device according to another aspect of the invention.

[0051] Figure 5 1 is a schematic diagram of a charging system according to an embodiment of the present invention. Here, the charging system 100 includes a vehicle 200 and a charging device 300 according to another aspect of the present invention. The charging device 300 includes a charging gun 1. Figures 1 to 4In the case shown in FIG. 1 , only a charge stop switch 7 is integrated on the gun body 2 of the charging gun 1, and the charge stop switch 7 is configured to activate a charge stop signal when operated and transmit the charge stop signal to the connected charging device 300. Here, the charging device 300 includes a charge control device 302 and a wireless communication device 301, wherein the wireless communication device 301 is configured to detect a wireless signal of an authorization device 400 assigned to the vehicle, and the charge control device 302 is configured to allow the charging process to be stopped based on the charge stop signal only when the wireless communication device 301 detects the wireless signal.

[0052] Here, the wireless communication unit 20 and the control unit 3 may not be provided in the gun body 2 of the charging gun 1, and the charging stop switch 7 is configured to activate the charging stop signal when operated and always transmit the charging stop signal to the connected charging device 300. In order to ensure that the charging stop can only be operated by authorized users and exclude malicious operations by others, the charging device 300 includes a charging control device 302 and a wireless communication device 301. The charging control device 302 and the wireless communication device 301 in the charging device 300 can be similar to Figures 1 to 4 The control unit 30 in the embodiment functions like the wireless communication unit 20.

[0053] like Figure 5 As shown, the wireless signal can be sent by a mobile terminal as the authorization device 400. Without limitation, the authorization device 400 can also be configured as a vehicle key (especially an electronic key, a remote control key or a wireless key) or a smart card. The authorization device 400 can preferably send a radio frequency identification signal, a Bluetooth signal, a near field communication signal, a Zigbee signal or a WiFi signal.

[0054] Preferably, the wireless communication device 301 can be configured to detect wireless signals of an authorization device associated with a single vehicle. Alternatively or additionally, the wireless communication device 301 can be configured to detect wireless signals of authorization devices associated with multiple vehicles.

[0055] Advantageously, provision is made that the wireless communication device 301 can be designed to be able to authenticate the wireless signal of the authorization device 400 .

[0056] Advantageously, provision is made that charging device 300 can be designed as a private charging device or as a public charging device.

[0057] The present invention is not limited to the embodiments shown, but includes or extends to all technical equivalents that can fall within the effective range. The position descriptions selected in the specification, such as top, bottom, left, right, etc., refer to the direct description and the drawings shown and can be transferred to the new position according to the meaning when the position changes.

[0058] The features disclosed in the invention may be essential and may be implemented both individually and in any combination for the realization of the exemplary embodiments in different configurations.

[0059] It should be understood that the terms used in the specification are only used to describe specific embodiments and are not intended to limit the present disclosure. All terms (including technical terms and scientific terms) used in the specification have the meanings commonly understood by those skilled in the art unless otherwise defined. For the sake of simplicity and / or clarity, well-known functions or structures may not be described in detail.

[0060] Although the utility model has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the utility model. Any technical personnel in this field can make possible changes and modifications to the technical solution of the utility model by using the methods and technical contents disclosed above without departing from the spirit and scope of the utility model. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model are within the protection scope of the technical solution of the utility model.

Claims

1. A charging gun for charging a vehicle, the charging gun (1) comprising: Gun body (2); and a charge stop switch (7) integrated in or on the gun body, wherein the charge stop switch is configured to trigger a charge stop signal when operated, It is characterized in that A wireless communication unit (20) and a control unit (30) are also provided in the gun body (2); the wireless communication unit (20) is configured to detect a wireless signal of an authorization device assigned to the vehicle; and the control unit (30) is configured to allow the charging stop signal to be transmitted to the connected charging device (300) to stop the charging process only when the wireless communication unit (20) detects the wireless signal.

2. The charging gun according to claim 1, characterized in that: The wireless signal is a radio frequency identification signal, a Bluetooth signal, a near field communication signal, a Zigbee signal or a WiFi signal.

3. The charging gun according to claim 2, characterized in that: The authority device includes a vehicle key or a smart card, or the authority device is integrated in a mobile terminal.

4. The charging gun according to any one of claims 1 to 3, characterized in that The charging stop switch (7) is a normally open mechanical switch or an inductive switch.

5. The charging gun according to claim 4, characterized in that: The charging stop switch (7) is integrated in or on an unlocking button (6) of the locking device of the charging gun.

6. The charging gun according to any one of claims 1 to 3, characterized in that The control unit (30) is implemented as a switch circuit, a relay or a programmable logic controller.

7. The charging gun according to any one of claims 1 to 3, characterized in that A photocoupler circuit for triggering and transmitting a charging stop signal is provided in the charging gun, the charging stop switch (7) is connected to the input stage of the photocoupler circuit, the control unit (30) switches on or off the power supply of the phototransistor in the output stage of the photocoupler circuit based on whether the wireless communication unit (20) receives the wireless signal, and the output stage of the photocoupler circuit is connected to a charging communication signal line and / or a charging connection confirmation signal line.

8. The charging gun according to any one of claims 1 to 3, characterized in that The wireless communication unit (20) is configured to detect a wireless signal of an authorization device assigned to a single vehicle; and / or the wireless communication unit (20) is configured to detect wireless signals of authorization devices assigned to a plurality of vehicles.

9. A charging device for charging a vehicle, characterized in that: The charging device (300) comprises a charging gun for charging a vehicle according to any one of claims 1 to 8.

10. A charging device for charging a vehicle, characterized in that: The charging device (300) comprises a charging gun, a charging stop switch (7) being integrated on a gun body of the charging gun, the charging stop switch (7) being configured to activate a charging stop signal when operated and transmit the charging stop signal to the connected charging device (300), The charging device (300) comprises a charging control device (302) and a wireless communication device (301), wherein the wireless communication device (301) is configured to detect a wireless signal of an authorization device (400) assigned to a vehicle, and the charging control device (302) is configured to allow the charging process to be stopped based on the charging stop signal only when the wireless communication device (301) detects the wireless signal.

11. The charging device according to claim 10, characterized in that The wireless signal is a radio frequency identification signal, a Bluetooth signal, a near field communication signal, a Zigbee signal or a WiFi signal sent by a vehicle key, a smart card or a mobile terminal serving as an authorization device (400).

12. The charging device according to claim 10, characterized in that The wireless communication device (301) is configured to detect a wireless signal of an authorization device assigned to a single vehicle; and / or the wireless communication device (301) is configured to detect wireless signals of authorization devices assigned to a plurality of vehicles.

13. The charging device according to claim 12, characterized in that The wireless communication device (301) is configured to be able to authenticate a wireless signal of an authorization device (400).

14. The charging device according to any one of claims 10 to 13, characterized in that The charging device is designed as a private charging device or a public charging device.

15. A charging system, characterized in that: The charging system (100) comprises a vehicle (200) and includes: The charging gun according to any one of claims 1 to 8; or A charging device for charging a vehicle according to claim 9; or A charging device for charging a vehicle according to any one of claims 10 to 14.

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