On-board discharge system and vehicle

Abstract

The present application provides an on-board discharge system and a vehicle, which belong to the field of vehicle technology. The on-board discharge system includes a detection module, a control circuit, an on-board charger and an off-vehicle discharge socket, and the off-vehicle discharge port cover is used to cover the off-vehicle discharge socket. The detection module is electrically connected to the control circuit; the control circuit is electrically connected to the on-board charger; the on-board charger is electrically connected to the off-vehicle discharge socket. The detection module can be used to detect the open and closed state of the off-vehicle discharge port cover. The on-board charger can control the power on or off of the off-vehicle discharge socket according to the feedback of the control circuit. In this way, the on-vehicle discharge system does not need to be provided with a high-voltage relay matching the off-vehicle discharge socket, and can also realize the power on or off of the off-vehicle discharge socket, which is conducive to reducing the hardware cost of the system.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and in particular to a vehicle-mounted discharge system and a vehicle. Background Art

[0002] With the development of the economy and society, the scale of use of new energy vehicles is getting larger and larger. When users drive new energy vehicles and experience outdoor activities such as camping and picnics, they usually need new energy vehicles to support external discharge functions. With the external discharge function, they can conveniently achieve "freedom of electricity use" in the wild. At present, there are two main discharge methods in the market: 220V discharge socket in the car and discharge gun outside the car. When using discharge in the car, the relevant requirements of GB 18384-2020 "Safety Requirements for Electric Vehicles" must be met: After the charge / discharge gun is disconnected, the voltage of the AC charging seat should drop below 30V within 1S, that is, when using discharge in the car, open the discharge port cover, and the discharge socket outside the car is not charged when the gun is not plugged in.

[0003] The existing technical solution is: add a high-voltage distribution box to the whole vehicle, which contains the discharge function inside and outside the vehicle, and separately control the discharge inside and outside the vehicle through two high-voltage relays. For details, see the published patent: CN111555380A-An electric vehicle inverter control system and control method. The high-voltage relay can realize that the discharge socket outside the vehicle is not charged when the discharge port cover is opened, but the hardware cost is high. That is, the hardware cost of the existing safe power supply outside the vehicle is relatively high. Utility Model Content

[0004] In view of this, an object of the embodiments of the present application is to provide an on-vehicle discharge system and a vehicle, which can improve the problem of high hardware cost of off-vehicle safe power supply.

[0005] In order to achieve the above technical objectives, the technical solutions adopted in this application are as follows:

[0006] In a first aspect, an embodiment of the present application provides a vehicle-mounted discharge system, the system comprising:

[0007] A detection module for detecting the open and closed state of the discharge port cover outside the vehicle;

[0008] a control circuit electrically connected to the detection module;

[0009] an on-board charger electrically connected to the control circuit;

[0010] and an off-vehicle discharge socket electrically connected to the on-vehicle charger, wherein the on-vehicle charger is used to control the off-vehicle discharge socket to power on or off according to feedback from the control circuit.

[0011] In combination with the first aspect, in some optional embodiments, the control circuit includes a vehicle integrated unit and a vehicle controller, wherein the vehicle integrated unit is electrically connected to the detection module, the vehicle integrated unit is also electrically connected to the vehicle controller, the vehicle controller is electrically connected to the on-board charger, and the vehicle integrated unit is used to send the electrical signal sensed by the detection module to the vehicle controller.

[0012] In combination with the first aspect, in some optional embodiments, the on-board charger is used to: when the control circuit does not receive a first electrical signal indicating that a discharge gun or a charging gun is inserted into the external discharge socket of the vehicle, and receives a second electrical signal output by the detection module, control the external discharge socket of the vehicle to be in a power-off state, and the second electrical signal indicates that the external discharge port cover of the vehicle is in an open state.

[0013] In combination with the first aspect, in some optional embodiments, the system further includes an in-vehicle discharge socket electrically connected to the on-board charger, and a discharge switch electrically connected to the control circuit;

[0014] The on-board charger is further used to: when the control circuit receives the third electrical signal output by the detection module indicating that the discharge port cover outside the vehicle is in a closed state, and receives the trigger signal output by the discharge switch, control the discharge socket inside the vehicle to be in a powered-on state;

[0015] When the control circuit does not receive the first electrical signal and receives the second electrical signal, the in-vehicle discharge socket is in a power-off state.

[0016] In combination with the first aspect, in some optional implementations, the on-board charger is further used to: when the control circuit receives the first electrical signal and the second electrical signal, control the off-vehicle discharge socket to be in a powered-on state.

[0017] In combination with the first aspect, in some optional embodiments, the system also includes a battery management unit, which is electrically connected to the on-board charger and the control circuit. The battery management unit is used to control the on-board charger to respond to the request instruction when it receives the request instruction output by the control circuit to allow in-vehicle discharge and / or outside-vehicle discharge.

[0018] In combination with the first aspect, in some optional implementations, the system further includes a first insurance module for circuit protection, and the first insurance module is arranged on the power supply line between the on-board charger and the in-vehicle discharge socket.

[0019] In combination with the first aspect, in some optional implementations, the system further includes a second insurance module for circuit protection, and the second insurance module is arranged on the power supply line between the on-board charger and the off-vehicle discharge socket.

[0020] In combination with the first aspect, in some optional embodiments, the system further includes a power battery electrically connected to the on-board charger.

[0021] In combination with the first aspect, in some optional implementations, the detection module includes any one of a photoelectric sensor, a magnetic sensor, and a contact switch.

[0022] In a second aspect, an embodiment of the present application further provides a vehicle, comprising a vehicle body and the above-mentioned on-board discharge system, wherein the on-board discharge system is disposed on the vehicle body.

[0023] The utility model adopting the above technical solution has the following advantages:

[0024] In the technical solution provided in the present application, the on-board discharge system includes a detection module, a control circuit, an on-board charger and an off-board discharge socket, and the off-board discharge port cover is used to cover the off-board discharge socket. The detection module can be used to detect the open and closed state of the off-board discharge port cover. The on-board charger can control the power on or off of the off-board discharge socket according to the feedback of the control circuit. In this way, the on-board discharge system does not need to be provided with a high-voltage relay matching the off-board discharge socket, and can also realize the power on or off of the off-board discharge socket, which is conducive to reducing the hardware cost of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present application may be further described by the non-limiting embodiments given in the accompanying drawings. It should be understood that the following drawings only illustrate certain embodiments of the present application and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings may be obtained based on these drawings without creative effort.

[0026] Figure 1 This is one of the circuit principle schematic diagrams of the vehicle-mounted discharge system provided in an embodiment of the present application.

[0027] Figure 2 The second circuit principle diagram of the vehicle-mounted discharge system provided in the embodiment of the present application.

[0028] Icons: 100-on-board discharge system; 110-external discharge port cover; 111-detection module; 120-control circuit; 121-first vehicle integrated unit; 122-second vehicle integrated unit; 123-vehicle controller; 130-electric drive assembly; 131-on-board charger; 140-external discharge socket; 150-in-vehicle discharge socket; 151-discharge switch; 160-battery management unit. DETAILED DESCRIPTION

[0029] The present application will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that in the drawings or descriptions, similar or identical parts use the same figure numbers, and the implementation methods not shown or described in the drawings are forms known to ordinary technicians in the relevant technical field. In the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0030] First embodiment

[0031] Please refer to Figure 1 The embodiment of the present application provides a vehicle-mounted discharge system 100, which can be deployed on a vehicle to reduce the hardware cost of safe power supply outside the vehicle. The vehicle has the ability to supply power to the outside, for example, the vehicle can be, but is not limited to, a pure electric vehicle, a hybrid vehicle that combines fuel and electricity, etc.

[0032] In this embodiment, the on-board discharge system 100 may include a detection module 111, a control circuit 120, an on-board charger (OBC) 131 and an off-board discharge socket 140. When the off-board discharge socket 140 is not in use, it is usually covered by an off-board discharge port cover 110 on the vehicle shell.

[0033] The external discharge socket 140 and the charging port on the vehicle can be the same interface, or two independent interfaces. Generally speaking, if the external discharge socket 140 and the charging port are two independent interfaces, the external discharge socket 140 and the charging port are arranged side by side and covered by the external discharge port cover 110 to prevent foreign objects from entering. Based on this, the external discharge port cover 110 can also be called a charging port cover.

[0034] The external discharge socket 140 can automatically detect whether a discharge gun or a charging gun is inserted into the external discharge socket 140. If it is detected that a discharge gun or a charging gun is inserted into the external discharge socket 140, the external discharge socket 140 outputs a first electrical signal to the control circuit 120. The first electrical signal can be a high level signal or a low level signal, or other types of electrical signals, which can be flexibly determined according to actual conditions.

[0035] In this embodiment, the detection module 111 can be any electronic device that can detect the open or closed state of the vehicle external discharge port cover 110. For example, the detection module 111 is a signal switch, such as, but not limited to, a photoelectric sensor, a magnetic sensor (such as a Hall sensor, a reed switch), a contact switch, etc.

[0036] The detection module 111 can output a second electrical signal to the control circuit 120 when detecting that the vehicle external discharge port cover 110 is in an open state; and output a third electrical signal to the control circuit 120 when detecting that the vehicle external discharge port cover 110 is in a closed state. The second electrical signal and the third electrical signal can be different level signals, which can be flexibly set according to actual conditions.

[0037] As an example, when the detection module 111 is a contact switch, the principle of detecting the open and closed state of the external discharge port cover 110 can be: when the external discharge port cover 110 is closed, the contact switch is turned on, a high-level signal is formed, and output to the control circuit 120, and the high-level signal indicates that the external discharge port cover 110 is in a closed state; when the external discharge port cover 110 is opened, the contact switch is disconnected, a low-level signal is generated by default, and output to the control circuit 120, and the low-level signal indicates that the external discharge port cover 110 is in an open state.

[0038] In this embodiment, the control circuit 120 is electrically connected to the detection module 111, the control circuit 120 is electrically connected to the on-board charger 131, and the on-board charger 131 is electrically connected to the off-board discharge socket 140. The control circuit 120 may send a request instruction for permitting discharge to the on-board charger 131. The on-board charger 131 may respond to the request instruction to control the off-board discharge socket 140 to power on.

[0039] In this embodiment, the control circuit 120 can output corresponding feedback information to the on-board charger 131 based on the open and closed state of the external discharge port cover 110 fed back by the detection module 111 and the detection of whether the external discharge socket 140 is inserted with a discharge gun or the use state of the charging gun, so that the on-board charger 131 can control the power on or off of the external discharge socket 140 based on the feedback information.

[0040] For example, when the control circuit 120 does not receive the first electrical signal indicating that a discharge gun or a charging gun is inserted into the external discharge socket 140, and receives the second electrical signal output by the detection module 111, the control circuit 120 sends a control instruction for powering off to the on-board charger 131. Based on the control instruction, the on-board charger 131 controls the external discharge socket 140 to be in a power-off state, and the second electrical signal indicates that the external discharge port cover 110 is in an open state. That is, when the external discharge port cover 110 is opened and the external discharge socket 140 is not inserted with a discharge gun / charging gun, the external discharge socket 140 is in a power-off state, so that even if someone (such as a child) accidentally touches the metal terminal on the external discharge socket 140, there will be no electric shock, thereby improving the safety of using the external discharge socket 140.

[0041] For another example, when the control circuit 120 receives the first electrical signal and the second electrical signal, the control circuit 120 sends a request instruction to the on-board charger 131 to allow the off-board discharge socket 140 to be powered on. Based on the request instruction, the on-board charger 131 controls the off-board discharge socket 140 to be powered on. That is, when the off-board discharge port cover 110 is opened and a discharge gun is inserted into the off-board discharge socket 140, the off-board discharge socket 140 can be powered on.

[0042] In other embodiments, the control circuit 120 may also combine more information on the vehicle to determine whether to allow the external discharge socket 140 to be powered on. For example, in addition to the need to meet the requirements that the external discharge port cover 110 is opened and a discharge gun is inserted into the external discharge socket 140, one or more of the following conditions (which can be flexibly set according to actual conditions) must be met for the condition to allow the external discharge socket 140 to be powered on, as follows:

[0043] 1. The high-voltage system status is "normal high-voltage activation";

[0044] 2. The vehicle's diagnostic function does not prohibit the DCAC function, which is used to convert the direct current of the power battery into alternating current;

[0045] 3. The available power of the DCAC function of the vehicle's power battery is greater than the set threshold, which can be flexibly determined based on actual conditions;

[0046] 4. The remaining power of the power battery is greater than the DCAC discharge cut-off SOC. The cut-off SOC can be flexibly determined according to actual conditions;

[0047] 5. The vehicle is in parking state.

[0048] It should be noted that the detection method of the data information corresponding to the above five conditions is a conventional method and will not be repeated here.

[0049] In this embodiment, the control circuit 120 may include a vehicle integrated unit (VIU) and a vehicle control unit (VCU) 123. The vehicle integrated unit is electrically connected to the detection module 111, and the vehicle integrated unit is also electrically connected to the vehicle control unit 123, and the vehicle control unit 123 is electrically connected to the vehicle charger 131. For the sake of distinction, the vehicle integrated unit electrically connected to the detection module 111 is referred to as the first vehicle integrated unit 121.

[0050] The first vehicle integration unit 121 and the vehicle controller 123 may forward corresponding electrical signals. For example, the first vehicle integration unit 121 may send the electrical signal (such as the second electrical signal and the third electrical signal) sensed by the detection module 111 to the vehicle controller 123 to determine the opening and closing state of the charging port cover.

[0051] In this embodiment, the control circuit 120 may further include a second vehicle integrated unit 122, and the vehicle controller 123 may be integrated on the second vehicle integrated unit 122. The second vehicle integrated unit 122 may be a VIU-FL on the vehicle; the first vehicle integrated unit 121 may be a VIU-R on the vehicle. The first vehicle integrated unit 121 and the second vehicle integrated unit 122 may be electrically connected via an INFO_CAN signal line.

[0052] Please refer to Figure 2 The vehicle-mounted discharge system 100 may further include an in-vehicle discharge socket 150 electrically connected to the in-vehicle charger 131, and a discharge switch 151 electrically connected to the control circuit 120. The in-vehicle charger 131 is provided with a discharge interface, which can supply power to the in-vehicle discharge socket 150 and the out-vehicle discharge socket 140. The in-vehicle discharge socket 150 may be a cable socket (or socket strip), and the discharge switch 151 may be a push switch or other manual switch, which is not specifically limited here.

[0053] The on-board charger 131 can also be used to control the on-board discharge socket 150 to be in a powered-on state when the control circuit 120 receives the third electrical signal output by the detection module 111 indicating that the discharge port cover 110 outside the vehicle is in a closed state, and receives the trigger signal output by the discharge switch 151. That is, when the discharge port cover 110 outside the vehicle is in a closed state (which also indicates that the discharge gun is not inserted into the discharge socket 140 outside the vehicle), and the discharge switch 151 is opened (or pressed), the on-board charger 131 can control the discharge socket 150 inside the vehicle to be in a powered-on state.

[0054] When the control circuit 120 does not receive the first electrical signal and receives the second electrical signal, the control circuit 120 may generate a control instruction not to allow the in-vehicle discharge socket 150 to be powered on, and send the control instruction to the on-board charger 131. The on-board charger 131 controls the in-vehicle discharge socket 150 to be powered off based on the control instruction. That is, when the external discharge port cover 110 is in the open state and the external discharge socket 140 is not plugged with a discharge gun or a charging gun, the on-board charger 131 may control the in-vehicle discharge socket 150 to be powered off.

[0055] In other embodiments, the control circuit 120 may also combine more information on the vehicle to determine whether to allow the in-vehicle discharge socket 150 to be powered on. For example, in addition to the need to meet the requirements that the external discharge port cover 110 is closed and the discharge switch 151 is opened (or pressed), one or more of the following conditions (which can be flexibly set according to actual conditions) must be met for the condition to allow the in-vehicle discharge socket 150 to be powered on, as follows:

[0056] 1. The high-voltage system status is "normal high-voltage activation";

[0057] 2. The vehicle's diagnostic function does not prohibit the DCAC function;

[0058] 3. The available power of the DCAC function of the vehicle's power battery is greater than the set threshold;

[0059] 4. The remaining power of the power battery is greater than the DCAC discharge cut-off SOC.

[0060] In this embodiment, when the vehicle discharge is used, it means that a discharge gun is inserted into the vehicle discharge socket 140 and the vehicle discharge socket 140 is powered on. At this time, the vehicle discharge socket 150 is powered on regardless of whether the discharge switch 151 on the vehicle discharge socket 150 is turned on or not.

[0061] During the use of the external discharge, if the user unplugs the discharge gun and closes the external discharge port cover 110, the external discharge socket 140 can continue to be powered on, while the internal discharge socket 150 is powered on only when the discharge switch 151 is turned on or the above-mentioned conditions for allowing the internal discharge socket 150 to be powered on are met.

[0062] In this embodiment, the vehicle discharge system 100 may further include a battery management system (BMS) 160 and an electric drive system (EDS) 130. The electric drive system 130 may be an EDS2-B, and the vehicle charger 131 may be integrated on the EDS. The second vehicle integration unit 122, the battery management unit 160 and the electric drive system 130 may be electrically connected via a PT_CAN signal line.

[0063] The battery management unit 160 is electrically connected to the vehicle charger 131 and the control circuit 120. The battery management unit 160 is used to control the vehicle charger 131 to respond to the request instruction when receiving the request instruction output by the control circuit 120 to allow in-vehicle discharge and / or out-vehicle discharge. The battery management unit 160 cooperates with the vehicle discharge gun to perform operations such as powering on and off the in-vehicle discharge socket 150 / out-vehicle discharge socket 140.

[0064] The on-board discharge system 100 may further include a first insurance module for circuit protection. The first insurance module is provided on the power supply line between the on-board charger 131 and the in-vehicle discharge socket 150. The first insurance module may be, but is not limited to, a fuse, a fuse, etc., for overcurrent protection and overvoltage protection of the circuit to improve power safety.

[0065] The on-board discharge system 100 may further include a second insurance module for circuit protection, which is disposed on the power supply line between the on-board charger 131 and the off-board discharge socket 140. The second insurance module may be, but is not limited to, a fuse, a fuse, etc., which is used for overcurrent protection and overvoltage protection of the circuit to improve power safety.

[0066] The vehicle-mounted discharge system 100 may further include a power battery electrically connected to the vehicle-mounted charger 131 , and the power battery serves as a power supply for the in-vehicle discharge socket 150 and the out-vehicle discharge socket 140 .

[0067] It should be noted that in this embodiment, the collection and processing of various data signals are conventional technologies, and the improvements of this application are in the connection relationship between various electronic components and do not involve improvements in computer programs or method flows.

[0068] Based on the above design, the vehicle-mounted discharge system 100 can eliminate the high-voltage relay while meeting the requirement of safe power supply, and the cost of the detection module 111 is much lower than that of the high-voltage relay. Therefore, the vehicle-mounted discharge system 100 is conducive to reducing the hardware cost of safe power supply.

[0069] Second embodiment

[0070] The embodiment of the present application also provides a vehicle, which includes a vehicle body and the on-board discharge system 100 in the first embodiment, and the on-board discharge system 100 is arranged on the vehicle body. In this way, the vehicle has the function of the on-board discharge system 100 in the first embodiment, and can reduce the system hardware cost on the basis of achieving safe discharge inside and outside the vehicle.

[0071] In the embodiments provided in the present application, it should be understood that the disclosed system can also be implemented in other ways. The system embodiments described above are merely schematic, for example, the block diagrams in the accompanying drawings show the possible architecture, functions and operations of the systems and computer program products according to the multiple embodiments of the present application. In this regard, each box in the block diagram can represent a part of a module, a program segment or a code, and a part of the module, a program segment or a code includes one or more executable instructions for implementing the specified logical functions. It should also be noted that each box in the block diagram, and the combination of the boxes in the block diagram, can be implemented by a dedicated hardware-based system that performs the specified function or action, or can be implemented by a combination of dedicated hardware and computer instructions. In addition, each functional module in each embodiment of the present application can be integrated together to form an independent part, or each module can exist separately, or two or more modules can be integrated to form an independent part.

[0072] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A vehicle-mounted discharge system, characterized in that: The system comprises: A detection module for detecting the open and closed state of the discharge port cover outside the vehicle; a control circuit electrically connected to the detection module; an on-board charger electrically connected to the control circuit; and an off-vehicle discharge socket electrically connected to the on-vehicle charger, wherein the on-vehicle charger is used to control the off-vehicle discharge socket to power on or off according to feedback from the control circuit.

2. The system according to claim 1, characterized in that The control circuit includes a vehicle integrated unit and a vehicle controller, wherein the vehicle integrated unit is electrically connected to the detection module, the vehicle integrated unit is also electrically connected to the vehicle controller, the vehicle controller is electrically connected to the on-board charger, and the vehicle integrated unit is used to send the electrical signal sensed by the detection module to the vehicle controller.

3. The system according to claim 2, characterized in that The on-board charger is used to control the off-vehicle discharge socket to be in a power-off state when the control circuit does not receive a first electrical signal indicating that a discharge gun or a charging gun is inserted into the off-vehicle discharge socket and receives a second electrical signal output by the detection module, wherein the second electrical signal indicates that the off-vehicle discharge port cover is in an open state.

4. The system according to claim 3, characterized in that The system further comprises an in-vehicle discharge socket electrically connected to the on-board charger, and a discharge switch electrically connected to the control circuit; The on-board charger is further used to: when the control circuit receives the third electrical signal output by the detection module indicating that the discharge port cover outside the vehicle is in a closed state, and receives the trigger signal output by the discharge switch, control the discharge socket inside the vehicle to be in a powered-on state; When the control circuit does not receive the first electrical signal and receives the second electrical signal, the in-vehicle discharge socket is in a power-off state.

5. The system according to claim 3, characterized in that The on-board charger is further configured to control the off-vehicle discharge socket to be in a powered-on state when the control circuit receives the first electrical signal and the second electrical signal.

6. The system according to claim 1, characterized in that The system also includes a battery management unit, which is electrically connected to the on-board charger and the control circuit. When the battery management unit receives a request instruction output by the control circuit to allow in-vehicle discharge and / or out-vehicle discharge, the battery management unit controls the on-board charger to respond to the request instruction.

7. The system according to claim 4, characterized in that The system further comprises a first insurance module for circuit protection, wherein the first insurance module is arranged on a power supply line between the on-board charger and the in-vehicle discharge socket.

8. The system according to claim 1, characterized in that The system further comprises a second insurance module for circuit protection, wherein the second insurance module is arranged on a power supply line between the on-board charger and the off-board discharge socket.

9. The system according to any one of claims 1 to 8, characterized in that: The detection module includes any one of a photoelectric sensor, a magnetic sensor, and a contact switch.

10. A vehicle, characterized in that: The vehicle comprises a vehicle body and an on-vehicle discharge system as claimed in any one of claims 1 to 9, wherein the on-vehicle discharge system is arranged on the vehicle body.

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