Vehicle-mounted power supply system, control method thereof and automobile

Abstract

The invention provides a vehicle-mounted power supply system, a control method thereof and an automobile. The system comprises a junction box, a control module, a socket assembly, a vehicle-mounted charger and a central control screen, the junction box comprises a voltage division circuit; the socket assembly comprises an out-vehicle alternating current charging and discharging socket, an in-vehicle socket and an out-vehicle forecabin socket. The voltage division circuit comprises a first relay, a second relay, a third relay and a connecting part; the connecting part comprises a first high-voltage connector, a second high-voltage connector, a third high-voltage connector, a fourth high-voltage connector and a low-voltage connector; the first relay, the first high-voltage connector and the out-vehicle alternating-current charging and discharging socket are connected; the second relay, the second high-voltage connector and the in-vehicle socket are connected; the third relay, the third high-voltage connector and the forecabin socket outside the vehicle are connected; the fourth high-voltage connector is connected with the first relay, the second relay, the third relay and the vehicle-mounted charger; and the low-voltage connector is connected with the first relay, the second relay, the third relay and the control module.

Description

Technical Field

[0001] The present application relates to the field of automobile control technology, and in particular to an on-board power supply system and a control method thereof, and an automobile. Background Art

[0002] In the prior art, when the vehicle socket detects that an electrical appliance is plugged in, the vehicle power supply system will supply power to the socket. This method is less safe, and if the user accidentally holds a conductor structure and inserts it into the socket, there is a risk of electric shock when the socket is powered on. Summary of the invention

[0003] The present application provides a vehicle-mounted power supply system and a control method thereof, and a vehicle, so as to solve the technical problem of low safety of power supply of vehicle-mounted sockets.

[0004] In a first aspect, the present application provides a vehicle-mounted power supply system, the vehicle-mounted power supply system comprising a junction box, a control module, a socket assembly, a vehicle-mounted charger, and a central control screen; the junction box comprises a voltage divider circuit;

[0005] The on-board charger is used to supply power to the socket assembly through the voltage divider circuit;

[0006] The socket assembly includes an AC charging and discharging socket outside the vehicle, a socket inside the vehicle, and a socket outside the front cabin of the vehicle; the AC charging and discharging socket outside the vehicle, the socket inside the vehicle, and the socket outside the front cabin of the vehicle respectively have corresponding socket identifiers;

[0007] The voltage dividing circuit includes a first relay, a second relay, a third relay and a connecting part; the connecting part includes a first high-voltage connector, a second high-voltage connector, a third high-voltage connector, a fourth high-voltage connector and a low-voltage connector;

[0008] The first relay, the first high-voltage connector, and the AC charging and discharging socket outside the vehicle are connected in sequence; the second relay, the second high-voltage connector, and the socket inside the vehicle are connected in sequence; the third relay, the third high-voltage connector, and the front cabin socket outside the vehicle are connected in sequence;

[0009] The fourth high-voltage connector is connected to the first relay, the second relay, the third relay, and the on-board charger respectively;

[0010] The low voltage connector is connected to the first relay, the second relay, the third relay and the control module respectively;

[0011] The central control screen is connected to the control module, and is used to display the socket identification, and in response to the user's triggering operation on the socket identification, generates a charging signal, and sends the charging signal to the control module; the charging signal carries the socket identification;

[0012] The socket assembly is used to generate a gun plug signal when an electrical appliance is inserted, and transmit the gun plug signal to the control module through the voltage divider circuit; the gun plug signal carries the socket identification;

[0013] The control module is used to receive the charging signal and the gun plug signal, detect whether the socket identifier in the charging signal and the socket identifier in the gun plug signal are the same, and if they are the same, determine the target relay associated with the socket identifier from the first relay, the second relay, and the third relay, and generate a closing signal, and send the closing signal to the target relay through the low-voltage connector;

[0014] The target relay is used to execute the closing instruction and perform a closing operation to supply power to the socket assembly connected to the target relay.

[0015] Furthermore, the control module is used to detect whether the socket identifier in the charging signal and the socket identifier in the gun plug signal are the same. If they are not the same, a prompt message is generated and the prompt message is sent to the central control screen; the central control screen is used to receive and display the prompt message to remind the user to change the trigger operation.

[0016] Furthermore, the junction box also includes a shell and a top cover plate; the shell and the top cover plate are arranged to form a receiving cavity; the first relay, the second relay and the third relay are arranged in the receiving cavity; and the connecting portion passes through the shell.

[0017] Furthermore, the voltage dividing circuit further comprises a micro switch; the micro switch is arranged in the accommodating cavity and on the top cover plate; the micro switch is connected to the low voltage connector;

[0018] The micro switch is used to detect whether the top cover plate is separated from the housing, and if so, a micro switch signal is generated, and the micro switch signal is transmitted to the control module through the low voltage connector;

[0019] The control module is used to send disconnection instructions to the first relay, the second relay, and the third relay respectively through the low-voltage connector when receiving the micro switch signal, so as to control the first relay, the second relay, and the third relay to be disconnected.

[0020] Furthermore, the first high-voltage connector, the second high-voltage connector, the third high-voltage connector, and the fourth high-voltage connector are respectively provided with high-voltage interlocking terminals;

[0021] The high-voltage interlock terminal is used to detect whether the connection between the connecting part and the socket assembly and the on-board charger is disconnected, and if so, a high-voltage interlock signal is sent to the control module;

[0022] The control module is used to send disconnection instructions to the first relay, the second relay, and the third relay respectively through the low-voltage connector when receiving the high-voltage interlock signal, so as to control the first relay, the second relay, and the third relay to disconnect.

[0023] Furthermore, the voltage-dividing circuit also includes a first fuse and a second fuse; the first fuse is connected to the second relay and the second high-voltage connector respectively; the second fuse is connected to the third relay and the third high-voltage connector respectively.

[0024] Furthermore, the socket identification includes: an external AC charging and discharging socket identification, an internal socket identification, and an external front cabin socket identification;

[0025] The control module is used to obtain the status information of the AC charging and discharging socket outside the vehicle, and send the status information to the central control screen; the status information includes charging status and non-charging status;

[0026] When the status information is a charging status, the central control screen is used to display a prompt message that the socket component cannot supply power;

[0027] When the status information is a non-charging state, the central control screen is used to display the external AC charging and discharging socket logo, the internal socket logo, and the external front cabin socket logo.

[0028] In a second aspect, the present application proposes a control method for a vehicle-mounted power supply system, the method being applied to the vehicle-mounted power supply system described in any one of the above embodiments; the method comprising:

[0029] The central control screen displays the socket identifier, and generates a charging signal in response to a user's triggering operation on the socket identifier, and sends the charging signal to the control module; the charging signal carries the socket identifier;

[0030] The socket assembly detects whether the user plugs in an electrical appliance, generates a gun plug signal when the user plugs in an electrical appliance, and transmits the gun plug signal to the control module through the voltage divider circuit; the gun plug signal carries the socket identifier;

[0031] The control module receives the charging signal and the gun plug signal, detects whether the socket identifier in the charging signal and the socket identifier in the gun plug signal are the same, and if they are the same, determines a target relay associated with the socket identifier from the first relay, the second relay, and the third relay, generates a closing signal, and sends the closing signal to the target relay through the low-voltage connector;

[0032] The target relay executes the closing instruction and performs a closing operation to supply power to the socket assembly connected to the target relay.

[0033] Furthermore, after detecting whether the socket identifier in the charging signal and the socket identifier in the gun plug signal are the same, the method further includes:

[0034] When it is determined that the socket identifier in the charging signal and the socket identifier in the gun plug signal are different, the control module generates prompt information and sends the prompt information to the central control screen;

[0035] The central control screen receives and displays the prompt information to remind the user to change the trigger operation.

[0036] In a third aspect, the present application proposes a car, which is equipped with an on-board power supply system as described in any of the above embodiments.

[0037] The present application can achieve the following beneficial effects: The present application divides the high-voltage circuit into three paths for external power supply, and these three paths can be controlled to be closed / disconnected respectively, meeting the user's needs for single-path power supply, dual-path power supply, and three-path power supply, and meeting the needs for 220V power supply inside and outside the vehicle at the same time. Furthermore, by detecting whether the socket identifier in the charging signal and the socket identifier in the gun plug signal are the same, the corresponding relay is closed only when they are the same, which can avoid the risk of electric shock caused by the user accidentally holding a conductor structure and inserting it into the socket and then energizing the socket, thereby improving the safety of vehicle power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0039] Figure 1 A schematic diagram of the structure of a vehicle power supply system provided in an embodiment of the present application;

[0040] Figure 2A schematic diagram of the structure of a vehicle power supply system provided in an embodiment of the present application;

[0041] Figure 3 A schematic diagram of the structure of a vehicle power supply system provided in an embodiment of the present application;

[0042] Figure 4 A schematic diagram of the structure of a vehicle power supply system provided in an embodiment of the present application;

[0043] Figure 5 A schematic diagram of a central control screen provided in an embodiment of the present application;

[0044] Figure 6 A schematic diagram of a central control screen provided in an embodiment of the present application;

[0045] Figure 7 A schematic diagram of the structure of a vehicle power supply system provided in an embodiment of the present application;

[0046] Figure 8 A flow chart of a control method for a vehicle power supply system provided in an embodiment of the present application.

[0047] Reference numerals:

[0048] 1-junction box, 11-voltage dividing circuit, 111-first relay, 112-second relay, 113-third relay, 12-connecting part, 114-first high-voltage connector, 115-second high-voltage connector, 116-third high-voltage connector, 117-fourth high-voltage connector, 118-low-voltage connector, 16-micro switch, 13-housing, 14-top cover, 15-accommodating cavity, 2-control module, 3-socket assembly, 31-outside AC charging and discharging socket, 32-in-vehicle socket, 33-outside front cabin socket, 4-on-board charger, 5-central control screen, 17-first fuse, 18-second fuse;

[0049] L-live wire, N-neutral wire, PE-ground wire. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0051] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article, unless otherwise specified, generally indicates that the associated objects before and after are in an "or" relationship.

[0052] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0053] In the prior art, when the vehicle socket detects that an electrical appliance is plugged in, the vehicle power supply system will supply power to the socket. This method is less safe, and if the user accidentally holds a conductor structure and inserts it into the socket, there is a risk of electric shock when the socket is powered on.

[0054] The present application proposes an on-vehicle power supply system and a control method thereof, and a vehicle, which can improve the safety of on-vehicle power supply.

[0055] The following introduces a vehicle-mounted power supply system and a control method thereof, and a vehicle provided by the present application in conjunction with the accompanying drawings.

[0056] In some embodiments, please refer to Figure 1 ( Figure 1The junction box 1 is not shown in the figure. The present application proposes an on-board power supply system. The on-board power supply system includes a junction box 1, a control module 2, a socket assembly 3, an on-board charger 4, and a central control screen 5; the junction box 1 includes a voltage divider circuit 11; the on-board charger 4 is used to supply power to the socket assembly 3 through the voltage divider circuit 11; the socket assembly 3 includes an AC charging and discharging socket 31 outside the vehicle, an in-vehicle socket 32, and an outside front cabin socket 33; the AC charging and discharging socket 31 outside the vehicle, the in-vehicle socket 32, and the outside front cabin socket 33 have corresponding socket identifications respectively; the voltage divider circuit 11 includes a first relay 111, a second relay 112, a third relay 113 and a connecting part 12; the connecting part 12 includes a first high-voltage connector 114, a second high-voltage connector 115, a third high-voltage connector 116, a first high-voltage connector 117, a second high-voltage connector 118, a third high-voltage connector 119, a second high-voltage connector 120, a third high-voltage connector 121, a third high-voltage connector 122, a third high-voltage connector 123, a third high-voltage connector 124, a third high-voltage connector 125, a third high-voltage connector 126, a third high-voltage connector 127, a third high-voltage connector 128, a third high-voltage connector 129, a third high-voltage connector 130, a third high-voltage connector 131, a third high-voltage connector 132, a third high-voltage connector 133, a third high-voltage connector 134, a third high-voltage connector 135, a third high-voltage connector 136, a third high-voltage connector 137, a third high-voltage connector Four high-voltage connectors 117 and a low-voltage connector 118; the first relay 111, the first high-voltage connector 114, and the external AC charging and discharging socket 31 are connected in sequence; the second relay 112, the second high-voltage connector 115, and the in-vehicle socket 32 ​​are connected in sequence; the third relay 113, the third high-voltage connector 116, and the external front compartment socket 33 are connected in sequence; the fourth high-voltage connector 117 is respectively connected to the first relay 111, the second relay 112, the third relay 113, and the on-board charger 4; the low-voltage connector 118 is respectively connected to the first relay 111, the second relay 112, the third relay 113, and the control module 2.

[0057] In some embodiments, the central control screen 5 is connected to the control module 2 to display the socket identification, and in response to the user's trigger operation on the socket identification, generates a charging signal, and sends the charging signal to the control module 2; the charging signal carries the socket identification. The socket assembly 3 is used to generate a gun plug signal when an electrical appliance is inserted, and transmit the gun plug signal to the control module 2 through the voltage divider circuit 11; the gun plug signal carries the socket identification. The control module 2 is used to receive the charging signal and the gun plug signal, detect whether the socket identification in the charging signal and the socket identification in the gun plug signal are the same, and if they are the same, determine the target relay associated with the socket identification from the first relay 111, the second relay 112, and the third relay 113, and generate a closing signal, and send the closing signal to the target relay through the low-voltage connector 118; the target relay is used to execute the closing instruction and perform a closing operation to supply power to the socket assembly 3 connected to the target relay.

[0058] Specifically, the high voltage connection represents the path through which the current flows; the control connection represents the transmission path of different signals and instructions.

[0059] Specifically, the external AC charging and discharging socket 31 has an external AC charging and discharging socket mark; the in-vehicle socket 32 ​​has an in-vehicle socket mark; and the external front cabin socket 33 has an external front cabin socket mark.

[0060] Specifically, when the first relay 111 is closed, the on-board charger 4 supplies power to the AC charging and discharging socket 31 outside the vehicle; when the second relay 112 is closed, the on-board charger 4 supplies power to the socket 32 ​​inside the vehicle; when the third relay 113 is closed, the on-board charger 4 supplies power to the front cabin socket 33 outside the vehicle.

[0061] In some embodiments, the external AC charging and discharging socket 31, the internal socket 32, and the external front cabin socket 33 all provide 220V AC power supply functions to enrich the use of high-current electrical appliances in the vehicle. The external front cabin socket 33 provides power supply for front cabin kitchen mode appliances. The internal socket 32 ​​can provide a maximum power supply of 2.2kW, the external front cabin socket 33 can provide a maximum power supply of 2.2kW, and the external AC charging and discharging socket 31 can provide a maximum power supply of 3.3kW.

[0062] In some embodiments, in a non-powered state, the first relay 111 , the second relay 112 , and the third relay 113 are all in a disconnected state.

[0063] In some embodiments, the control module 2 is specifically a vehicle controller.

[0064] In some embodiments, the connecting portion 12 has a shielding function.

[0065] In some embodiments, the on-board charger 4 has an inverter function for supplying power.

[0066] Based on the above embodiments, the present application divides the high-voltage circuit into three routes for external power supply. These three routes can be controlled to be closed / disconnected respectively to meet the user's needs for single-route, dual-route and triple-route power supply, and can also meet the needs of having 220V power supply both inside and outside the vehicle.

[0067] In some embodiments, the in-vehicle socket 32 ​​is a 5-pin socket, and the out-vehicle front compartment socket 33 is a 5-pin socket.

[0068] In some embodiments, the low-voltage connector 118 has 6 pin circuits, including: 1 12V negative pin circuit, 3 relay high-level control signal pin circuits (used to transmit closing instructions and opening instructions to the first relay 111, the second relay 112, and the third relay 113, respectively), and 2 interlock signal pin circuits (used to transmit high-voltage interlock signals).

[0069] In some embodiments, the first relay 111 may be a 40A current relay and connected in series to the live wire. The second relay 112 may be a 20A current relay.

[0070] In some embodiments, the control module 2 stores the association relationship between the identifiers of the relays and the socket assembly 3, specifically: the first relay 111 is associated with the identifier of the AC charging and discharging socket outside the vehicle, the second relay 112 is associated with the identifier of the socket inside the vehicle, and the third relay 113 is associated with the identifier of the front cabin socket outside the vehicle.

[0071] In some embodiments, the central control screen 5 displays the socket identification (external AC charging and discharging socket identification, in-vehicle socket identification, and external front cabin socket identification). When the user clicks (triggers) one of the above socket identifications, the central control screen 5 generates a charging signal in response to the user's triggering operation on the socket identification, and sends the charging signal to the control module 2; the charging signal carries the socket identification clicked by the user. The socket assembly 3 detects whether an electrical appliance is inserted. If so, the socket into which the electrical appliance is inserted generates a gun plug signal, and transmits the gun plug signal to the control module 2 through the voltage divider circuit 11; the gun plug signal carries the socket identification corresponding to the socket into which the electrical appliance is inserted. The control module 2 receives the charging signal and the gun plug signal, detects whether the socket identification in the charging signal and the socket identification in the gun plug signal are the same, and if they are the same, determines the target relay associated with the socket identification from the first relay 111, the second relay 112, and the third relay 113, and generates a closing signal, and sends the closing signal to the target relay through the low-voltage connector 118. The target relay executes the closing instruction and performs a closing operation to connect the circuit between the socket indicated by the socket identifier and the on-board charger 4 to supply power to the socket indicated by the socket identifier.

[0072] For example, when a user plugs an electrical appliance into the in-vehicle socket 32, the in-vehicle socket 32 ​​generates a plug-in signal, which carries the in-vehicle socket identifier. The user clicks "in-vehicle socket identifier" on the central control screen 5 to indicate that he wants to use the in-vehicle socket 32, and the central control screen 5 generates a charging signal, which carries the in-vehicle socket identifier. At this time, the socket identifier in the charging signal is the same as the socket identifier in the plug-in signal, and the in-vehicle socket identifier is associated with the second relay 112, and the target relay is determined to be the second relay 112. The control module 2 sends a closing signal to the second relay 112, and the second relay 112 closes, connecting the circuit between the in-vehicle socket 32 ​​and the on-board charger 4, so that the on-board charger 4 supplies power to the in-vehicle socket 32, and the electrical appliance can be powered on and work.

[0073] In some embodiments, if the control module 2 does not receive a charging signal, no closing signal will be generated, and the first relay 111 , the second relay 112 , and the third relay 113 will maintain an open state.

[0074] Based on the above embodiment, by detecting whether the socket identifier in the charging signal and the socket identifier in the gun plug signal are the same, the corresponding relay is closed only when they are the same. This can avoid the risk of electric shock caused by the user accidentally holding a conductor structure and inserting it into the socket so that the socket is powered on, thereby improving the safety of vehicle power supply.

[0075] In some embodiments, the control module 2 is used to detect whether the socket identifier in the charging signal and the socket identifier in the gun plug signal are the same. If they are not the same, a prompt message is generated and the prompt message is sent to the central control screen 5; the central control screen 5 is used to receive and display the prompt message to remind the user to change the trigger operation.

[0076] For example, when a user plugs an electrical appliance into the in-vehicle socket 32, the in-vehicle socket 32 ​​generates a plug-in signal, which carries the in-vehicle socket identifier. The user clicks on the "outside front cabin socket identifier" on the central control screen 5, indicating that he wants to use the outside front cabin socket 33, and the central control screen 5 generates a charging signal, which carries the outside front cabin socket identifier. At this time, the socket identifier in the charging signal is different from the socket identifier in the plug-in signal, and a prompt message is generated. The central control screen 5 displays a prompt message, which may be "The socket identifier you selected is inconsistent with the socket into which the electrical appliance is plugged", to remind the user that the wrong socket identifier may have been clicked and the trigger (click) operation needs to be changed.

[0077] In some embodiments, see Figure 1 and Figure 2 As shown, the junction box 1 further includes a shell 13 and a top cover plate 14; the shell 13 and the top cover plate 14 are arranged to form a receiving chamber 15; the first relay 111, the second relay 112, and the third relay 113 are arranged in the receiving chamber 15; the connecting portion 12 passes through the shell 13. The top cover plate 14 blocks the entrance of the receiving chamber 15.

[0078] In some embodiments, the shell 13 is a cast aluminum shell 13 with conductive properties. The shell 13 is connected to the vehicle electrical platform to realize leakage detection of the shell 13. At the same time, the connection part 12 shielding is introduced into the vehicle electrical platform through the cast aluminum shell 13.

[0079] In some embodiments, see Figure 3 and Figure 4As shown, the voltage dividing circuit 11 also includes a micro switch 16; the micro switch 16 is arranged in the accommodating cavity 15 and on the top cover plate 14; the micro switch 16 is connected to the low voltage connector 118; the micro switch 16 is used to detect whether the top cover plate 14 is separated from the shell 13, and if so, a micro switch signal is generated, and the micro switch signal is transmitted to the control module 2 through the low voltage connector 118; the control module 2 is used to send a disconnection instruction to the first relay 111, the second relay 112, and the third relay 113 through the low voltage connector 118 respectively when receiving the micro switch signal, so as to control the first relay 111, the second relay 112, and the third relay 113 to disconnect.

[0080] Based on the above embodiment, the socket assembly 3 can be powered off when the top cover plate 14 is separated from the shell 13 (i.e., the junction box 1 is open), thereby preventing maintenance personnel from opening the junction box 1 for maintenance while it is powered on, thereby improving safety.

[0081] In some embodiments, high-voltage interlocking terminals are respectively provided inside the first high-voltage connector 114, the second high-voltage connector 115, the third high-voltage connector 116, and the fourth high-voltage connector 117; the high-voltage interlocking terminals are used to detect whether the connection between the connecting part 12 and the socket assembly 3 and the on-board charger 4 is disconnected, and if so, a high-voltage interlocking signal is sent to the control module 2; the control module 2 is used to send a disconnection instruction to the first relay 111, the second relay 112, and the third relay 113 through the low-voltage connector 118 respectively when receiving the high-voltage interlocking signal, so as to control the first relay 111, the second relay 112, and the third relay 113 to disconnect.

[0082] Specifically, the high-voltage interlock terminal inside the first high-voltage connector 114 is used to detect whether the connection between the first high-voltage connector 114 and the AC charging and discharging socket 31 outside the vehicle is disconnected. If so, a high-voltage interlock signal is sent to the control module 2. The high-voltage interlock terminal inside the second high-voltage connector 115 is used to detect whether the connection between the second high-voltage connector 115 and the socket 32 ​​inside the vehicle is disconnected. If so, a high-voltage interlock signal is sent to the control module 2. The high-voltage interlock terminal inside the third high-voltage connector 116 is used to detect whether the connection between the third high-voltage connector 116 and the front compartment socket 33 outside the vehicle is disconnected. If so, a high-voltage interlock signal is sent to the control module 2. The high-voltage interlock terminal inside the fourth high-voltage connector 117 is used to detect whether the connection between the fourth high-voltage connector 117 and the on-board charger 4 is disconnected. If so, a high-voltage interlock signal is sent to the control module 2.

[0083] Based on the above embodiment, when the connection between the connecting part 12 and the socket assembly 3 and the on-board charger 4 is disconnected, the connecting part 12 and the socket assembly 3 can be powered off in time to avoid the risks of touch leakage and arcing.

[0084] In some embodiments, see Figure 2 and Figure 4 As shown, the voltage divider circuit 11 further includes a first fuse 17 and a second fuse 18; the first fuse 17 is respectively connected to the second relay 112 and the second high-voltage connector 115; the second fuse 18 is respectively connected to the third relay 113 and the third high-voltage connector 116. The first fuse 17 and the second fuse 18 can be automatically blown when the circuit temperature is too high, thereby cutting off the connection between the on-board charger 4 and the in-vehicle socket 32 ​​and the front compartment socket 33 outside the vehicle, thereby avoiding the risk of fire caused by excessive temperature and excessive load.

[0085] In some embodiments, the AC charging and discharging socket 31 outside the vehicle has both a "charging" function and a "power supply" function. When the AC charging and discharging socket 31 outside the vehicle plays the "charging" function, the AC charging and discharging socket 31 outside the vehicle serves as the charging socket of the car and is connected to the charging gun of the charging pile to charge the car. At this time, in order to avoid the in-vehicle socket 32 ​​and the front compartment socket 33 outside the vehicle dividing the charging voltage of the charging pile, the in-vehicle socket 32 ​​and the front compartment socket 33 outside the vehicle should be avoided. When the AC charging and discharging socket 31 outside the vehicle plays the "power supply" function or is not in use, the in-vehicle socket 32 ​​and the front compartment socket 33 outside the vehicle can be used.

[0086] In some embodiments, the socket identifier includes: an external AC charging and discharging socket identifier, an internal socket identifier, and an external front compartment socket identifier. The control module 2 is used to obtain the status information of the external AC charging and discharging socket 31 and send the status information to the central control screen 5. The status information includes a charging state and a non-charging state. When the status information is a charging state, refer to Figure 5 As shown, the central control screen 5 is used to display the prompt information that the socket component cannot supply power. Figure 6 As shown, the central control screen 5 is used to display the external AC charging and discharging socket logo, the internal socket logo, and the external front cabin socket logo for the user to click.

[0087] Based on the above embodiment, when the AC charging and discharging socket 31 outside the vehicle performs the "charging" function, the central control screen 5 does not display the socket logo, but displays a prompt message that the socket component cannot supply power, so as to inform the user that the vehicle is in a charging state and the socket component 3 cannot supply power. This can prevent the in-vehicle socket 32 ​​and the front compartment socket 33 outside the vehicle from dividing the charging voltage of the charging pile, and give priority to ensuring the charging efficiency of the vehicle.

[0088] In some embodiments, in rainy weather, the control module 2 can be actively used to send a disconnection command to the first relay 111, the second relay 112, and the third relay 113 to avoid the risk of the entire vehicle being powered off due to low insulation resistance caused by the low protection level of the AC charging and discharging socket 31 outside the vehicle on rainy days.

[0089] In some embodiments, see Figure 7 As shown ( Figure 7 The low voltage connector 118 is not shown, the solid line inside the junction box 1 represents the transmission path of the current, and the dotted line represents the transmission path of the high voltage interlock signal.

[0090] This application proposes a control method for a vehicle power supply system. Figure 8 As shown, the method is applied to the vehicle power supply system described in any one of the above embodiments; the method includes:

[0091] S101: The central control screen 5 displays the socket identifier, and generates a charging signal in response to a user's triggering operation on the socket identifier, and sends the charging signal to the control module 2; the charging signal carries the socket identifier;

[0092] S102: The socket assembly 3 detects whether the user plugs in an electrical appliance. If the user plugs in an electrical appliance, a gun plug signal is generated, and the gun plug signal is transmitted to the control module 2 through the voltage divider circuit 11; the gun plug signal carries the socket identifier;

[0093] S103: The control module 2 receives the charging signal and the gun plug signal, detects whether the socket identifier in the charging signal and the socket identifier in the gun plug signal are the same, and if they are the same, determines a target relay associated with the socket identifier from the first relay 111, the second relay 112, and the third relay 113, generates a closing signal, and sends the closing signal to the target relay through the low-voltage connector 118;

[0094] S104: The target relay executes the closing instruction and performs a closing operation to supply power to the socket assembly 3 connected to the target relay.

[0095] In some embodiments, after detecting whether the socket identifier in the charging signal and the socket identifier in the gun plug signal are the same, the method further includes:

[0096] S1: When it is determined that the socket identifier in the charging signal and the socket identifier in the gun plug signal are different, the control module 2 generates prompt information and sends the prompt information to the central control screen 5;

[0097] S2: The central control screen 5 receives and displays the prompt information to remind the user to change the trigger operation.

[0098] The present application proposes a car, which is equipped with an on-board power supply system as described in any of the above embodiments.

[0099] It should be noted that the above method may also include other implementation methods according to the description of the system embodiment. The specific implementation methods can refer to the description of the relevant system embodiment and will not be described one by one here.

[0100] The system embodiment described above is merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art may understand and implement it without creative work.

[0101] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0102] In summary, although the present application has been disclosed as above with preferred embodiments, the above preferred embodiments are not intended to limit the present application. Ordinary technicians in this field can make various changes and modifications without departing from the spirit and scope of the present application. Therefore, the scope of protection of the present application shall be based on the scope defined in the claims.

Claims

1. A vehicle-mounted power supply system, characterized in that: The vehicle-mounted power supply system comprises a junction box (1), a control module (2), a socket assembly (3), an on-board charger (4), and a central control screen (5); the junction box (1) comprises a voltage divider circuit (11); The on-board charger (4) is used to supply power to the socket assembly (3) through the voltage divider circuit (11); The socket assembly (3) comprises an AC charging and discharging socket (31) outside the vehicle, an in-vehicle socket (32), and an out-vehicle front cabin socket (33); the AC charging and discharging socket (31) outside the vehicle, the in-vehicle socket (32), and the out-vehicle front cabin socket (33) respectively have corresponding socket identifiers; The voltage dividing circuit (11) comprises a first relay (111), a second relay (112), a third relay (113) and a connecting portion (12); the connecting portion (12) comprises a first high-voltage connector (114), a second high-voltage connector (115), a third high-voltage connector (116), a fourth high-voltage connector (117), and a low-voltage connector (118); The first relay (111), the first high-voltage connector (114), and the off-vehicle AC charging and discharging socket (31) are connected in sequence; the second relay (112), the second high-voltage connector (115), and the on-vehicle socket (32) are connected in sequence; the third relay (113), the third high-voltage connector (116), and the off-vehicle front cabin socket (33) are connected in sequence; The fourth high-voltage connector (117) is respectively connected to the first relay (111), the second relay (112), the third relay (113), and the on-board charger (4); The low-voltage connector (118) is respectively connected to the first relay (111), the second relay (112), the third relay (113), and the control module (2); The central control screen (5) is connected to the control module (2) and is used to display the socket identification and, in response to a user's triggering operation on the socket identification, generate a charging signal and send the charging signal to the control module (2); the charging signal carries the socket identification; The socket assembly (3) is used to generate a gun plug signal when an electrical appliance is inserted, and transmit the gun plug signal to the control module (2) through the voltage divider circuit (11); the gun plug signal carries the socket identification; The control module (2) is used to receive the charging signal and the gun plugging signal, detect whether the socket identifier in the charging signal and the socket identifier in the gun plugging signal are the same, and if they are the same, determine a target relay associated with the socket identifier from the first relay (111), the second relay (112), and the third relay (113), generate a closing signal, and send the closing signal to the target relay through the low-voltage connector (118); The target relay is used to execute the closing instruction and perform a closing operation to supply power to the socket assembly (3) connected to the target relay.

2. The system according to claim 1, characterized in that The control module (2) is used to detect whether the socket identifier in the charging signal and the socket identifier in the gun plug signal are the same, and if they are not the same, generate prompt information and send the prompt information to the central control screen (5); The central control screen (5) is used to receive and display the prompt information to remind the user to change the trigger operation.

3. The system according to claim 1, characterized in that The junction box (1) also includes a shell (13) and a top cover plate (14); The shell (13) and the top cover plate (14) are arranged to form a receiving cavity (15); The first relay (111), the second relay (112), and the third relay (113) are arranged in the accommodating cavity (15); The connecting portion (12) passes through the housing (13).

4. The system according to claim 3, characterized in that The voltage dividing circuit (11) further comprises a micro switch (16); the micro switch (16) is arranged in the accommodating cavity (15) and on the top end cover plate (14); the micro switch (16) is connected to the low voltage connector (118); The micro switch (16) is used to detect whether the top cover plate (14) is separated from the housing (13); if so, a micro switch signal is generated and the micro switch signal is transmitted to the control module (2) through the low voltage connector (118); The control module (2) is used for sending disconnection instructions to the first relay (111), the second relay (112), and the third relay (113) respectively through the low-voltage connector (118) when receiving the micro switch signal, so as to control the first relay (111), the second relay (112), and the third relay (113) to be disconnected.

5. The system according to claim 1, characterized in that The first high-voltage connector (114), the second high-voltage connector (115), the third high-voltage connector (116), and the fourth high-voltage connector (117) are respectively provided with high-voltage interlocking terminals; The high-voltage interlock terminal is used to detect whether the connection between the connecting portion (12) and the socket assembly (3) and the on-board charger (4) is disconnected, and if so, a high-voltage interlock signal is sent to the control module (2); The control module (2) is used for sending disconnection instructions to the first relay (111), the second relay (112), and the third relay (113) respectively through the low-voltage connector (118) when receiving the high-voltage interlock signal, so as to control the first relay (111), the second relay (112), and the third relay (113) to be disconnected.

6. The system according to claim 1, characterized in that The voltage divider circuit (11) further comprises a first fuse (17) and a second fuse (18); The first fuse (17) is connected to the second relay (112) and the second high-voltage connector (115) respectively; The second fuse (18) is connected to the third relay (113) and the third high-voltage connector (116) respectively.

7. The system according to claim 1, characterized in that The socket identification includes: an external AC charging and discharging socket identification, an internal socket identification, and an external front compartment socket identification; The control module (2) is used to obtain status information of the off-vehicle AC charging and discharging socket (31), and send the status information to the central control screen (5); the status information includes a charging status and a non-charging status; When the status information is a charging status, the central control screen (5) is used to display a prompt message indicating that the socket component cannot supply power; When the status information is a non-charging state, the central control screen (5) is used to display the identification of the AC charging and discharging socket outside the vehicle, the identification of the socket inside the vehicle, and the identification of the socket outside the vehicle front cabin.

8. A control method for a vehicle power supply system, characterized in that: The method is applied to the vehicle power supply system according to any one of claims 1 to 7; the method comprises: The central control screen (5) displays the socket identifier, and generates a charging signal in response to a user's triggering operation on the socket identifier, and sends the charging signal to the control module (2); the charging signal carries the socket identifier; The socket assembly (3) detects whether a user has plugged in an electrical appliance, and generates a gun plug signal when the user has plugged in an electrical appliance, and transmits the gun plug signal to the control module (2) through the voltage divider circuit (11); the gun plug signal carries the socket identification; The control module (2) receives the charging signal and the gun plug signal, detects whether the socket identifier in the charging signal and the socket identifier in the gun plug signal are the same, and if they are the same, determines a target relay associated with the socket identifier from the first relay (111), the second relay (112), and the third relay (113), generates a closing signal, and sends the closing signal to the target relay through the low-voltage connector (118); The target relay executes the closing instruction and performs a closing operation to supply power to the socket assembly (3) connected to the target relay.

9. The method according to claim 8, characterized in that After detecting whether the socket identifier in the charging signal and the socket identifier in the gun plug signal are the same, the method further includes: When it is determined that the socket identifier in the charging signal and the socket identifier in the gun plug signal are not the same, the control module (2) generates prompt information and sends the prompt information to the central control screen (5); The central control screen (5) receives and displays the prompt information to remind the user to change the trigger operation.

10. An automobile, characterized in that: The vehicle is provided with the on-vehicle power supply system according to any one of claims 1 to 7.

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