Electricity utilization conversion device of vehicle, control method of electricity utilization conversion device and vehicle

Abstract

The invention discloses a power utilization conversion device of a vehicle, a control method of the power utilization conversion device and the vehicle, and belongs to the technical field of vehicle power utilization equipment. The power utilization conversion device of the vehicle comprises a power supply interface which is configured to be connected with a vehicle-mounted power supply of the vehicle; the power utilization interface is configured to be connected with load equipment and / or a charging power grid of the vehicle-mounted power supply; the circuit conversion module is configured to change the connection condition between the power supply interface and the power utilization interface according to different working modes; the control module is configured to adjust the working mode of the circuit conversion module according to the state information of the power utilization interface; and sending a power utilization request corresponding to the working mode to the vehicle, wherein the power utilization request is used for requesting the vehicle to adjust the energy flow direction and / or the energy level between the vehicle-mounted power supply and the power utilization interface. Through the power utilization conversion device of the vehicle, the charging and discharging requirements of the vehicle-mounted power supply in different scenes can be met.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle electrical equipment, and in particular to a vehicle electrical conversion device and a control method thereof, and a vehicle. Background Art

[0002] The combination of vehicles and electricity has brought more convenience and possibilities to consumers' travel. Today, with the deeper integration of vehicles and electricity, consumers' demand for vehicle electricity is no longer limited to "electric drive", but has begun to explore more aspects of electricity consumption. For example, there is a demand for diversified discharge functions of vehicles.

[0003] However, whether a vehicle has a discharge function depends on the manufacturer's factory configuration of the vehicle. So far, only a small number of mid-to-high-end models in the market have a discharge function, which can no longer meet the diverse discharge needs of different consumers for various models. Summary of the invention

[0004] The present application provides a vehicle power conversion device and a control method thereof, and a vehicle, to solve the technical problems existing in the related technologies. Specifically, the present application includes the following technical solutions:

[0005] In a first aspect, the present application provides a vehicle power conversion device, comprising: a power interface, configured to be connected to the vehicle's on-board power supply; a power interface, configured to be connected to a load device and / or a charging grid of the on-board power supply; a circuit conversion module, configured to change the connection between the power interface and the power interface according to different working modes; a control module, configured to adjust the working mode of the circuit conversion module according to status information of the power interface; and sending a power request corresponding to the working mode to the vehicle, the power request being used to request the vehicle to adjust the energy flow direction and / or energy level between the on-board power supply and the power interface.

[0006] In some possible implementations, the power interface includes a discharge interface, and the working mode of the circuit conversion module includes a discharge mode of connecting the discharge interface and the power interface. When the control module adjusts the working mode of the circuit conversion module according to the status information of the power interface, it is configured to: adjust the working mode of the circuit conversion module to the discharge mode according to first status information of the discharge interface, wherein the first status information is used to indicate that the discharge interface is connected.

[0007] In some possible implementations, the discharge interface includes a first discharge interface for connecting the load device, and the discharge mode of the circuit conversion module includes a first discharge mode for connecting the first discharge interface and the power interface; when the control module adjusts the working mode of the circuit conversion module according to the status information of the power consumption interface, it is configured to: adjust the working mode of the circuit conversion module to the first discharge mode according to the second status information of the first discharge interface, and the second status information is used to indicate that the first discharge interface is connected; when the control module sends a power consumption request corresponding to the working mode to the vehicle, it is configured to: send a first discharge request corresponding to the first discharge mode to the vehicle, so as to request the vehicle to cause the on-board power supply to discharge to the load device through the first discharge interface with a first discharge power, and the first discharge power is adapted to the operating power of the load device.

[0008] In some possible implementations, the discharge interface includes a second discharge interface for connecting the charging grid, and the discharge mode includes a second discharge mode for connecting the second discharge interface and the power interface; when the control module adjusts the working mode of the circuit conversion module according to the status information of the power consumption interface, it is configured to: adjust the working mode of the circuit conversion module to the second discharge mode according to the third status information of the second discharge interface, and the third status information is used to indicate that the second discharge interface is connected; when the control module sends a power consumption request corresponding to the working mode to the vehicle, it is configured to: send a second discharge request corresponding to the second discharge mode to the vehicle, so as to request the vehicle to make the on-board power supply discharge to the charging grid through the second discharge interface with a second discharge power, and the second discharge power is adapted to the operating power of the charging grid.

[0009] In some possible embodiments, the power consumption interface includes a second charging interface for connecting to the charging grid, the working mode of the circuit conversion module includes a second charging mode for connecting the second charging interface and the power supply interface, and when the control module adjusts the working mode of the circuit conversion module according to the status information of the power consumption interface, it is configured to: adjust the working mode of the circuit conversion module to the second charging mode according to the fourth status information of the second charging interface, and the fourth status information is used to indicate that the second charging interface is connected; when the control module sends a power consumption request corresponding to the working mode to the vehicle, it is configured to: send a second charging request corresponding to the second charging mode to the vehicle, so as to request the vehicle to charge the on-board power supply through the charging grid connected to the second charging interface.

[0010] In some possible embodiments, the power conversion device also includes a detection module, and the control module is further configured to: determine whether to monitor the working status of the power conversion device in real time based on the feedback information of the power request; if positive feedback information indicating that the power request is accepted is received, the working status of the power conversion device is monitored in real time through the detection module; if negative feedback information indicating that the power request is rejected is received or the feedback information of the power request is not received, the working status of the power conversion device is not monitored in real time.

[0011] In some possible embodiments, the detection module includes a current detection module and a voltage detection module. When the control module receives the positive feedback information and monitors the working status of the power conversion device in real time through the detection module, it is configured as follows: if the positive feedback information is received, the voltage between the power interface and the power interface is detected through the voltage detection module, and / or the current between the power interface and the power interface is detected through the current detection module, so as to monitor the working status of the power conversion device in real time.

[0012] In some possible implementations, the power interface includes a first discharge interface for connecting the load device, the power request includes a first discharge request corresponding to a first discharge mode for connecting the power interface and the first discharge interface, and the positive feedback information includes first positive feedback information for indicating that the first discharge request is accepted. When the control module receives the positive feedback information and monitors the working state of the power conversion device in real time through the detection module, it is also configured to: if the first positive feedback information is received, detect the voltage between the power interface and the first discharge interface through the voltage detection module, and detect the current between the power interface and the first discharge interface through the current detection module; determine the discharge power of the vehicle power supply according to the current and voltage between the power interface and the first discharge interface; and determine whether the working state of the power conversion device is abnormal according to the discharge power.

[0013] In a second aspect, the present application provides a control method for a vehicle's power conversion device, the method comprising: adjusting the working mode of a circuit conversion module of the power conversion device according to status information of a power interface of the power conversion device, the working mode being used to enable the circuit conversion module to change the connection between the power interface and the power interface according to different working modes; sending a power request corresponding to the working mode to the vehicle, the power request being used to request the vehicle to adjust the energy flow direction and / or energy level between the on-board power supply and the power interface.

[0014] In a third aspect, the present application provides a vehicle, comprising an electric power conversion device as described above in any one of the above-mentioned vehicles.

[0015] In a fourth aspect, the present application also provides a computer-readable storage medium, in which at least one computer program is stored. The at least one computer program is loaded and executed by a processor of a vehicle so that the vehicle implements any of the above-mentioned control methods for the vehicle's power conversion device.

[0016] In a fifth aspect, a computer program product or a computer program is also provided, the computer program product or the computer program comprising computer instructions, the computer instructions being stored in a computer-readable storage medium. A processor of a vehicle reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the vehicle executes any of the above-described control methods for the vehicle's power conversion device.

[0017] The beneficial effects of the technical solution provided by this application include at least:

[0018] The vehicle power conversion device disclosed in the present application can, on the one hand, adjust the working mode of the circuit conversion module according to the status information of different types of power interfaces to meet the consumer's power needs for the vehicle in different scenarios; on the other hand, it can also adjust the energy flow and / or energy level between the vehicle and the power interface through power requests corresponding to the working mode, so that the current output or input of the vehicle is adapted to the vehicle's power usage scenario, avoiding damage to the vehicle or other equipment and systems electrically connected to the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments 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 these drawings without creative work.

[0020] Figure 1 It is a structural schematic diagram of a power conversion device for a vehicle provided in an embodiment of the present application;

[0021] Figure 2 A schematic diagram of a circuit connection of a vehicle power conversion device provided in an embodiment of the present application;

[0022] Figure 3 is a flow chart of a control method of a vehicle power conversion device provided in an embodiment of the present application;

[0023] Figure 4It is a schematic diagram of the structure of a vehicle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0026] Figure 1 Schematic diagram of the structure of the vehicle power conversion device provided by the embodiment of the present application. Figure 1 The vehicle power conversion device provided in the embodiment of the present application includes:

[0027] The power interface 14 is configured to connect to the vehicle's onboard power supply and can be used for, but not limited to, transmitting power signals. Schematically, the connection between the power interface 14 and the onboard power supply can be a direct connection or an indirect connection, and the present application does not impose any restrictions in this regard. In some embodiments, the power interface 14 can be connected to the onboard power supply, for example, via an OBC (On Board Charge).

[0028] The power interface 13 is configured to connect to the load device of the vehicle power supply and / or the charging grid, and can also be used for but not limited to transmitting power signals. The load device of the vehicle power supply can be, for example, a mobile phone, a computer, a mobile power supply, or any other device that can utilize the power provided by the vehicle power supply in any way; the charging grid of the vehicle power supply can be, for example, any network facility that can provide charging services for the vehicle power supply or can exchange power with the vehicle power supply. Similarly, the connection between the power interface 13 and the load device and / or the charging grid can be direct or indirect.

[0029] Considering that different application scenarios may have different requirements for the power interface 13, different types of power interfaces 13 may be provided for the power conversion device of the vehicle according to different application scenarios.

[0030] In some embodiments, the application scenarios of the power interface 13 may include, for example, a discharge scenario for discharging a load device connected to a vehicle power supply or a charging grid, and a charging scenario for charging a load device connected to a vehicle power supply or a charging grid; depending on the application scenario, the power interface 13 may include, for example: a discharge interface suitable for a discharge scenario and a charging interface suitable for a charging scenario.

[0031] In some other embodiments, the discharge scenario of the power interface 13 may, for example, include a first discharge scenario for discharging a load device connected to the vehicle power supply, and a second discharge scenario for discharging by connecting to the charging grid. The charging scenario of the power interface 13 may, for example, include a first charging scenario for charging a load device connected to the vehicle power supply, and a second charging scenario for charging by connecting to the charging grid. Depending on the application scenario, the power interface 13 may, for example, include: a first discharge interface for connecting a load device of the vehicle power supply in the first discharge scenario, a second discharge interface for connecting to the charging grid of the vehicle power supply in the second discharge scenario, a first charging interface for connecting a load device of the vehicle power supply in the first charging scenario, and a second charging interface for connecting to the charging grid of the vehicle power supply in the second charging scenario.

[0032] It is also considered that when the connection objects of the power interface 13 are the same, the requirements for the power interface 13 may not differ much. In view of this, two different connection methods can be set for the same power interface 13 to meet the different requirements of the same connection object for the power interface 13 in the charging scenario and the discharging scenario, so as to save the physical space occupied by the power interface 13. In some instances, the first discharge interface for connecting the load device of the vehicle power supply in the first discharge scenario and the first charging interface for connecting the load device of the vehicle power supply in the first charging scenario can be, for example, two different connection methods of the same power interface 13. In some other embodiments, the second discharge interface for connecting the charging grid of the vehicle power supply in the second discharge scenario and the second charging interface for connecting the charging grid of the vehicle power supply in the second charging scenario can be, for example, two different connection methods of the same power interface 13.

[0033] The circuit conversion module 12 is configured to change the connection between the power interface 14 and the power interface 13 according to different working modes. Among them, the working mode of the circuit conversion module can be used for, but not limited to, adjusting the connection mode of the internal circuit of the vehicle's power conversion device by changing the connection between the power interface 14 and the power interface 13, so as to adapt to the requirements for the connection mode of the internal circuit of the vehicle's power conversion device in different application scenarios. As mentioned above, depending on the application scenario, the vehicle's power conversion device may include different types of power interfaces 13. In view of this, the working mode of the circuit conversion module 12 may include a variety of working modes for changing the connection between different types of power interfaces 13 and the power interface 14.

[0034] In some embodiments, when the power interface 13 includes a discharge interface, the working mode of the circuit conversion module 12 may include, for example, a discharge mode in which the discharge interface is connected to the power interface 14. In some embodiments, when the power interface 13 includes a charging interface, the working mode of the circuit conversion module 12 may include, for example, a charging mode in which the charging interface is connected to the power interface 14.

[0035] In some other embodiments, when the discharge interface includes a first discharge interface and / or a second discharge interface, the discharge mode of the circuit conversion module 12 may include, for example, a first discharge mode connecting the first discharge interface and the power interface 14, and / or a second discharge mode connecting the second discharge interface and the power interface 14. When the charging interface includes a first charging interface and / or a second charging interface, the charging mode of the circuit conversion module 12 may include, for example, a first charging mode connecting the first charging interface and the power interface 14, and / or a second charging mode connecting the second charging interface and the power interface 14.

[0036] In some embodiments, the circuit conversion module 12 may be, for example, a control circuit including a plurality of switches for controlling the on / off state of the circuit. The plurality of switches may be respectively arranged on the circuits between different types of power interfaces 13 and power interfaces 14, and the plurality of switches may receive control signals and respectively disconnect or connect corresponding circuits according to the control signals, so that the circuit conversion module 12 is in different working modes. In some embodiments, the plurality of switches for controlling the on / off state of the circuit may be, for example, relays.

[0037] The control module 11 is configured to adjust the working mode of the circuit conversion module 12 according to the state information of the power interface 13. The state information of the power interface 13 can be used to indicate whether the power interface 13 is connected, and the control module 11 can obtain the state information of the power interface 13 by any means such as a detection circuit, a sensor, etc. A signal connection can be established between the control module 11 and the circuit conversion module 12, so that the control module 11 can control the circuit conversion module 12 to adjust the working mode according to the state information of the power interface 13.

[0038] The control module 11 is also configured to send a power request corresponding to the working mode of the circuit conversion module 12 to the vehicle, and the power request is used to request the vehicle to adjust the energy flow direction and / or energy level between the vehicle power supply and the power interface. As mentioned above, the working mode of the circuit conversion module 12 is adapted to the requirements for the internal circuit connection method of the vehicle's power conversion device in different application scenarios. In view of this, the working mode of the circuit conversion module 12 can also be used to indicate different application scenarios, so that the control module 11 can request the vehicle through the power request corresponding to the working mode of the circuit conversion module 12, so that the vehicle can adjust the energy flow direction and / or energy level between the vehicle power supply and the power interface 13 according to the power request to match the application scenario of the vehicle's power conversion device. In some embodiments, the control module 11 can, for example, send a power request to the vehicle through a CAN (Controller Area Network) network.

[0039] The energy flow direction may include, for example, the current direction between the vehicle power supply and the power interface 13. Depending on the application scenario, in some embodiments, the current direction may include, for example, a first current direction in which the vehicle power supply is discharged through the power interface 13. In some other embodiments, the current direction may include, for example, a second current direction in which the vehicle power supply is charged through the power interface 13.

[0040] The energy level may include, for example, the discharge power when the vehicle power supply is discharged through the power interface 13. Depending on the application scenario, in some embodiments, the discharge power may include, for example, a first discharge power that is compatible with the operating power of the load device of the vehicle power supply. In some other embodiments, the discharge power may include, for example, a second discharge power that is compatible with the operating power of the charging grid of the vehicle power supply.

[0041] As described above, the control module 11 can adjust the working mode of the circuit conversion module 12 according to the status information of the power interface 13, and send a power request corresponding to the working mode to the vehicle. When the working mode of the circuit conversion module 12 includes multiple working modes for connecting multiple different types of power interfaces 13 and power supply interfaces 14, the control module 11 can also make different adjustments to the multiple working modes of the circuit conversion module 12 according to the multiple status information of the multiple different types of power interfaces 13, and send multiple power requests corresponding to the multiple working modes to the vehicle, so that the vehicle's power conversion device can adapt to different requirements for the internal circuit connection method of the vehicle's power conversion device in different application scenarios, and make the energy flow direction and / or energy level between the vehicle-mounted power supply and the multiple different types of power interfaces 13 match different application scenarios.

[0042] In some embodiments, when the power interface 13 is a discharge interface, and the working mode of the circuit conversion module 12 is a discharge mode of connecting the discharge interface and the power interface 14, the control module 11, when adjusting the working mode of the circuit conversion module 12 according to the state information of the power interface, can be configured, for example, to adjust the working mode of the circuit conversion module to the discharge mode according to the first state information of the discharge interface, so as to adapt to the requirements of the internal circuit connection mode of the vehicle's power conversion device when the vehicle-mounted power source is discharged through the discharge interface. The first state information can be used to indicate that the discharge interface is connected.

[0043] In some embodiments, when the discharge interface is a first discharge interface for connecting a load device, and the discharge mode of the circuit conversion module 12 is a first discharge mode that connects the first discharge interface and the power interface 14, when the control module 11 adjusts the working mode of the circuit conversion module 12 according to the state information of the power interface 13, for example, it can be configured to: adjust the working mode of the circuit conversion module 12 to the first discharge mode according to the second state information of the first discharge interface, so as to adapt to the requirements of the internal circuit connection mode of the vehicle's power conversion device when the vehicle-mounted power supply discharges to the load device through the first discharge interface. The second state information can be used to indicate that the first discharge interface is connected.

[0044] In some embodiments, when the discharge interface is a first discharge interface for connecting a load device, and the discharge mode of the circuit conversion module 12 is a first discharge mode that connects the first discharge interface and the power interface 14, when the control module 11 sends a power request corresponding to the working mode to the vehicle, it can be configured to, for example, send a first discharge request corresponding to the first discharge mode to the vehicle to request the vehicle to discharge the on-board power supply to the load device through the first discharge interface at the first discharge power, so that the current direction and discharge power between the on-board power supply and the first discharge interface match the scenario. The first discharge power is adapted to the operating power of the load device of the on-board power supply.

[0045] In some embodiments, when the discharge interface is a second discharge interface for connecting to a charging grid, and the discharge mode of the circuit conversion module 12 is a second discharge mode for connecting the second discharge interface and the power interface 14, when the control module 11 adjusts the working mode of the circuit conversion module 12 according to the state information of the power interface 13, it can be configured, for example, to adjust the working mode of the circuit conversion module 12 to the second discharge mode according to the third state information of the second discharge interface, so as to adapt to the requirements of the internal circuit connection mode of the vehicle's power conversion device when the vehicle-mounted power supply discharges to the charging grid through the second discharge interface. The third state information can be used to indicate that the second discharge interface is connected.

[0046] In some embodiments, when the discharge interface is a second discharge interface for connecting to a charging grid, and the discharge mode of the circuit conversion module 12 is a second discharge mode that connects the second discharge interface and the power interface 14, when the control module 11 sends a power request corresponding to the working mode to the vehicle, it can be configured to, for example, send a second discharge request corresponding to the second discharge mode to the vehicle to request the vehicle to discharge the on-board power supply to the charging grid through the second discharge interface at a second discharge power, so that the current direction and discharge power between the on-board power supply and the second discharge interface match the scenario. The second discharge power is adapted to the operating power of the charging grid of the on-board power supply.

[0047] In some embodiments, when the power interface 13 is a second charging interface for connecting to a charging grid, and the working mode of the circuit conversion module 12 is a second charging mode for connecting the second charging interface and the power interface 14, when the control module 11 adjusts the working mode of the circuit conversion module according to the state information of the power interface, it can be configured, for example, to adjust the working mode of the circuit conversion module 12 to the second charging mode according to the fourth state information of the second charging interface, so as to adapt to the requirements of the internal circuit connection mode of the vehicle's power conversion device when the vehicle-mounted power supply is charged through the charging grid connected to the second charging interface. The fourth state information can be used to indicate that the second charging interface is connected.

[0048] In some embodiments, when the power interface 13 is a second charging interface for connecting to a charging grid, and the working mode of the circuit conversion module 12 is a second charging mode that connects the second charging interface and the power interface 14, the control module 11, when sending a power request corresponding to the working mode to the vehicle, can be configured, for example, to send a second charging request corresponding to the second charging mode to the vehicle, requesting the vehicle to charge the on-board power supply through the charging grid connected to the second charging interface, so that the current direction between the on-board power supply and the charging interface matches the scenario.

[0049] Considering that the on-board power supply is charged and discharged through the vehicle's power conversion device, if the internal circuit of the vehicle's power conversion device is abnormal, the on-board power supply and / or the load equipment and charging grid connected to the on-board power supply through the vehicle's power conversion device may be damaged. In view of this, in order to avoid damaging the on-board power supply, load equipment, and charging grid, the embodiment of the present application can also monitor the working status of the vehicle's power conversion device in real time through the detection module.

[0050] In some embodiments, the power request sent by the control module 11 to the vehicle can also be used to request the vehicle to send feedback information corresponding to the power request to the control module to inform the control module 11 whether the power request is accepted. In some embodiments, the feedback information may include, for example, positive feedback information indicating that the power request is accepted and negative feedback information indicating that the power request is rejected.

[0051] Whether the control module 11 receives feedback information of the power request, or whether the power request sent by the control module 11 is accepted can be used to indicate whether the power conversion device of the vehicle is to enter the working state. In view of this, the detection module can be controlled by the control module 11 to timely confirm whether the power conversion device of the vehicle enters the working state and detect the working state of the power conversion device of the vehicle. In some embodiments, the control module 11 can also be configured to: determine whether to monitor the working state of the power conversion device of the vehicle in real time according to the feedback information of the power request; if positive feedback information indicating that the power request is accepted is received, the working state of the power conversion device of the vehicle is monitored in real time through the detection module; if negative feedback information indicating that the power request is rejected is received or feedback information of the power request is not received, the working state of the power conversion device of the vehicle is not monitored in real time.

[0052] Considering that the vehicle's power conversion device is mainly used to meet the vehicle's power supply's demand for charging and discharging by changing the connection between the power interface 14 and a variety of different types of power interfaces 13. In view of this, the working state of the vehicle's power conversion device can be monitored in real time through the voltage and / or current between the power interface 14 and the power interface 13 to ensure circuit safety and avoid damaging the vehicle's power supply and / or the load equipment and charging grid connected to the vehicle's power conversion device through the vehicle's power conversion device. In some embodiments, the detection module may include, for example, a current detection module and a voltage detection module. When the control module 11 receives positive feedback information and monitors the working state of the vehicle's power conversion device in real time through the detection module, it may be configured, for example, as follows: if positive feedback information is received, the voltage between the power interface and the power interface is detected through the voltage detection module, and / or the current between the power interface and the power interface is detected through the current detection module, so as to monitor the working state of the vehicle's power conversion device in real time.

[0053] It is also considered that when the vehicle power supply discharges the load device, it may be necessary to reduce the voltage or limit the discharge power of the vehicle power supply to protect the load device. In view of this, the working state of the vehicle's power conversion device can be monitored in real time according to the discharge power of the vehicle power supply. In some embodiments, when the power interface 13 is a first discharge interface for connecting the load device, and the power request is a first discharge request corresponding to the first discharge mode of connecting the power interface 14 and the first discharge interface, the positive feedback information may include, for example, first positive feedback information for indicating that the first discharge request is accepted. When the control module 11 receives the positive feedback information and monitors the working state of the vehicle's power conversion device in real time through the detection module, for example, it can also be configured as follows: if the first positive feedback information is received, the voltage between the power interface and the first discharge interface is detected by the voltage detection module, and the current between the power interface and the first discharge interface is detected by the current detection module; the discharge power of the vehicle power supply is determined according to the current and voltage between the power interface and the first discharge interface; and whether the working state of the vehicle's power conversion device is abnormal is determined according to the discharge power.

[0054] The vehicle power conversion device provided in the present application allows consumers to choose to install the vehicle power conversion device when needed, and choose not to install the vehicle power conversion device when not needed, thereby lowering the threshold for providing vehicles with diversified power functions.

[0055] Figure 2 It is a circuit connection diagram of a power conversion device for a vehicle provided in an embodiment of the present application.

[0056] refer to Figure 2The power interface 14 can form a first discharge circuit with the first discharge interface S1, a second discharge circuit with the second discharge interface S2, and a second charging circuit with the second charging interface S3 through the ground wire PE, the live wire L, and the neutral wire N.

[0057] A first switch K1 for controlling the on / off state of the first discharge circuit may be provided on the first discharge circuit formed by the power interface 14 and the first discharge interface S1, a second switch K2 for controlling the on / off state of the second discharge circuit may be provided on the second discharge circuit formed by the power interface 14 and the second discharge interface S2, and a third switch K3 for controlling the on / off state of the second charging circuit may be provided on the second charging circuit formed by the power interface 14 and the second charging interface S3.

[0058] In some embodiments, the control module 11 can obtain the second state information of the first discharge interface S1, the third state information of the second discharge interface S2, and the fourth state information of the second charging interface S3 through any method such as a sensor or a control circuit.

[0059] In some embodiments, a signal connection can be established between the control module 11 and the first discharge interface S1, the second discharge interface S2, and the second charging interface S3, and the control module 11 can control the first switch K1 to be closed according to the second state information of the first discharge interface, so that the first discharge circuit is connected; or control the second switch K2 to be closed according to the third state information of the second discharge interface S2, so that the second discharge circuit is connected; or control the third switch K3 to be closed according to the fourth state information of the second charging interface S3, so that the second charging circuit is connected. When the first discharge circuit is connected, the vehicle power supply can discharge the load device through the first discharge circuit, when the second discharge circuit is connected, the vehicle power supply can discharge the charging grid through the second discharge circuit, and when the second charging circuit is connected, the vehicle power supply can be charged through the charging grid connected to the second charging circuit.

[0060] In some embodiments, the first discharge circuit may be provided with a fourth voltage detection module U4, a first voltage detection module U1, and a first current detection module I1, which are respectively connected to the control module 11 by signal. Among them, the fourth voltage detection module U4 can be used to detect the input voltage of the power interface 14, the first voltage detection module U1 can be used to detect the output voltage of the first discharge interface S1, and the first current detection module I1 can be used to detect the output current of the first discharge interface S1, so that the control module 11 can perform real-time detection of the working state of the vehicle's power conversion device when the vehicle-mounted power supply discharges the load device through the first discharge circuit according to the input voltage of the power interface 14, the output voltage of the first discharge interface S1, and the output current of the first discharge interface S1, so as to timely handle the abnormal situation in the vehicle's power conversion device. For example, according to the input voltage of the power interface 14, the output voltage of the first discharge interface S1, and the output current of the first discharge interface S1, it is determined whether the discharge power of the vehicle-mounted power supply matches the operating power of the load device.

[0061] In some embodiments, the second discharge circuit may be provided with a fourth voltage detection module U4 and a second voltage detection module U2 respectively connected to the control module 11 by signal. The fourth voltage detection module U4 may be used to detect the input voltage of the power interface 14, and the second voltage detection module U2 may be used to detect the output voltage of the second discharge interface S2, so that the control module 11 can perform real-time detection of the working state of the vehicle's power conversion device when the vehicle-mounted power supply discharges the charging grid through the second discharge circuit according to the input voltage of the power interface 14 and the output voltage of the second discharge interface S2, and timely handle abnormal conditions in the vehicle's power conversion device. For example, the working state of the second switch K2 is determined according to the ratio between the input voltage of the power interface 14 and the output voltage of the second discharge interface S2.

[0062] In some embodiments, the second charging circuit may be provided with a fourth voltage detection module U4 and a third voltage detection module U3 respectively connected to the control module 11 by signal. The fourth voltage detection module U4 may be used to detect the output voltage of the power interface 14, and the third voltage detection module U3 may be used to detect the input voltage of the second charging interface S3, so that the control module 11 can perform real-time detection of the working state of the vehicle's power conversion device when the vehicle-mounted power supply is charged through the charging grid connected to the second charging circuit according to the output voltage of the power interface 14 and the input voltage of the second charging interface S3, and timely handle abnormal conditions in the vehicle's power conversion device. For example, the working state of the third switch K3 is determined according to the ratio between the output voltage of the power interface 14 and the input voltage of the second charging interface S3.

[0063] As described above, the second discharge interface and the second charging interface may be, for example, two different connection modes of the same power interface. In view of this, in some embodiments, the second discharge circuit formed by the power interface 14 and the second discharge interface S2 and the second charging circuit formed by the power interface 14 and the second charging interface S3 may be, for example, the same circuit, and the elements in the second discharge circuit and the second charging circuit may be, for example, the same elements.

[0064] The vehicle power conversion device disclosed in the present application can, on the one hand, adjust the working mode of the circuit conversion module according to the status information of different types of power interfaces to meet the consumer's power needs for the vehicle in different scenarios; on the other hand, it can also adjust the energy flow and / or energy level between the vehicle and the power interface through power requests corresponding to the working mode, so that the current output or input of the vehicle is adapted to the vehicle's power usage scenario, avoiding damage to the vehicle or other equipment and systems electrically connected to the vehicle.

[0065] In some other possible implementations, the present application also provides a method for controlling a power conversion device of a vehicle. Figure 3 Flow chart of the control method of the vehicle power conversion device provided in the embodiment of the present application. Figure 3 , the control method of the vehicle power conversion device provided in the embodiment of the present application includes:

[0066] Step S310, adjusting the working mode of the circuit conversion module of the power conversion device according to the status information of the power interface of the power conversion device, the working mode is used to enable the circuit conversion module to change the connection between the power interface and the power interface according to different working modes.

[0067] Step S320, sending a power request corresponding to the working mode to the vehicle, the power request is used to request the vehicle to adjust the energy flow direction and / or energy level between the vehicle power supply and the power interface.

[0068] In some embodiments, the power interface includes a discharge interface, and the working mode of the circuit conversion module includes a discharge mode of connecting the discharge interface and the power interface. When adjusting the working mode of the circuit conversion module according to the status information of the power interface, it includes: adjusting the working mode of the circuit conversion module to the discharge mode according to the first status information of the discharge interface, and the first status information is used to indicate that the discharge interface is connected.

[0069] In some embodiments, the discharge interface includes a first discharge interface for connecting a load device, and the discharge mode of the circuit conversion module includes a first discharge mode that connects the first discharge interface and the power interface; when adjusting the working mode of the circuit conversion module according to the status information of the power interface, it includes: adjusting the working mode of the circuit conversion module to the first discharge mode according to the second status information of the first discharge interface, and the second status information is used to indicate that the first discharge interface is connected; sending a power request corresponding to the working mode to the vehicle, including: sending a first discharge request corresponding to the first discharge mode to the vehicle, so as to request the vehicle to make the on-board power supply discharge to the load device through the first discharge interface with a first discharge power, and the first discharge power is adapted to the operating power of the load device.

[0070] In some embodiments, the discharge interface includes a second discharge interface for connecting to a charging grid, and the discharge mode includes a second discharge mode for connecting the second discharge interface to the power interface; adjusting the working mode of the circuit conversion module according to the status information of the power consumption interface includes: adjusting the working mode of the circuit conversion module to the second discharge mode according to the third status information of the second discharge interface, and the third status information is used to indicate that the second discharge interface is connected; sending a power consumption request corresponding to the working mode to the vehicle includes: sending a second discharge request corresponding to the second discharge mode to the vehicle to request the vehicle to discharge the on-board power supply to the charging grid through the second discharge interface at a second discharge power, and the second discharge power is adapted to the operating power of the charging grid.

[0071] In some embodiments, the power consumption interface includes a second charging interface for connecting to a charging grid, and the working mode of the circuit conversion module includes a second charging mode for connecting the second charging interface and the power supply interface. When adjusting the working mode of the circuit conversion module according to the status information of the power consumption interface, it includes: adjusting the working mode of the circuit conversion module to the second charging mode according to the fourth status information of the second charging interface, and the fourth status information is used to indicate that the second charging interface is connected; when sending a power consumption request corresponding to the working mode to the vehicle, it includes: sending a second charging request corresponding to the second charging mode to the vehicle, so as to request the vehicle to charge the on-board power supply through the charging grid connected to the second charging interface.

[0072] In some embodiments, the power conversion device also includes a detection module, and the control method also includes: determining whether to monitor the working status of the power conversion device in real time based on the feedback information of the power request; if positive feedback information indicating that the power request is accepted is received, the working status of the power conversion device is monitored in real time through the detection module; if negative feedback information indicating that the power request is rejected is received or no feedback information of the power request is received, the working status of the power conversion device is not monitored in real time.

[0073] In some embodiments, the detection module includes a current detection module and a voltage detection module, and receives positive feedback information, and monitors the working status of the power conversion device in real time through the detection module, including: if positive feedback information is received, detecting the voltage between the power interface and the power interface through the voltage detection module, and / or detecting the current between the power interface and the power interface through the current detection module, so as to monitor the working status of the power conversion device in real time.

[0074] In some embodiments, the power interface includes a first discharge interface for connecting a load device, the power request includes a first discharge request corresponding to a first discharge mode that connects the power interface and the first discharge interface, the positive feedback information includes first positive feedback information for indicating that the first discharge request is accepted, and after receiving the positive feedback information, the working state of the power conversion device is monitored in real time through the detection module, including: if the first positive feedback information is received, the voltage between the power interface and the first discharge interface is detected through the voltage detection module, and the current between the power interface and the first discharge interface is detected through the current detection module; the discharge power of the vehicle power supply is determined according to the current and voltage between the power interface and the first discharge interface; and whether the working state of the power conversion device is abnormal is determined according to the discharge power.

[0075] The control method of the vehicle power conversion device provided in the above embodiment belongs to the same concept as the embodiment of the vehicle power conversion device. The specific implementation process thereof is detailed in the embodiment of the vehicle power conversion device.

[0076] In some other possible implementations, the present application also provides a structural schematic diagram of a vehicle. Figure 4 is a schematic diagram of the structure of a vehicle provided in an embodiment of the present application. Figure 4 The vehicle includes a vehicle power conversion device 410, which is used to perform the above Figure 3 The control method of the vehicle power conversion device provided by the method embodiment. Of course, the vehicle may also have components such as a wired or wireless network interface, a keyboard, and an input / output interface for input and output, and the vehicle may also include other components for realizing the functions of the device, which will not be described in detail here.

[0077] In some other possible implementations, the present application further provides a computer-readable storage medium having at least one computer program stored thereon, the at least one computer program being loaded and executed by a processor of a vehicle so that the vehicle can implement the above-mentioned Figure 3A control method for a vehicle's power conversion device provided in a method embodiment. Depending on the implementation, the computer-readable storage medium may be a readable signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of readable storage media (a non-exhaustive list) include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0078] In some other possible implementations, the present application further provides a computer program (product), which includes a computer program / instruction, and the computer instruction is stored in a computer-readable storage medium. The processor of the vehicle reads the computer instruction from the computer-readable storage medium, and the processor executes the computer instruction, so that the vehicle implements the above Figure 3 A method for controlling a vehicle power conversion device is provided in a method embodiment.

[0079] In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. The term "plurality" refers to two or more, unless otherwise clearly defined.

[0080] It should be noted that the electronic device in this application may also be referred to as a display device. In addition, the information, data (including but not limited to image data, etc.) and signals involved in this application are all authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with the relevant laws, regulations and standards of the relevant countries and regions. For example, the grayscale values ​​involved in this application are obtained with full authorization.

[0081] The term "and / or" in the embodiments of the present application is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent three situations: A exists alone, A and B exist at the same time, and B exists alone.

[0082] The above description is only for the purpose of facilitating the technical solution of the present application to be understood by those skilled in the art, and is not intended to limit the present application. 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 power conversion device, characterized in that: include: A power interface, configured to be connected to an onboard power supply of a vehicle; A power interface configured to connect a load device of the vehicle power supply and / or a charging grid; A circuit conversion module, configured to change the connection between the power interface and the power interface according to different working modes; The control module is configured to adjust the working mode of the circuit conversion module according to the status information of the power interface; and send a power request corresponding to the working mode to the vehicle, wherein the power request is used to request the vehicle to adjust the energy flow direction and / or energy level between the on-board power supply and the power interface.

2. The power conversion device according to claim 1, characterized in that: The power interface includes a discharge interface, the working mode of the circuit conversion module includes a discharge mode of connecting the discharge interface and the power interface, and the control module is configured to: The working mode of the circuit conversion module is adjusted to the discharge mode according to the first state information of the discharge interface, wherein the first state information is used to indicate that the discharge interface is connected.

3. The power conversion device according to claim 2, characterized in that: The discharge interface includes a first discharge interface for connecting the load device, and the discharge mode of the circuit conversion module includes a first discharge mode for connecting the first discharge interface and the power interface; When the control module adjusts the working mode of the circuit conversion module according to the state information of the power interface, the control module is configured to: adjust the working mode of the circuit conversion module to the first discharge mode according to the second state information of the first discharge interface, wherein the second state information is used to indicate that the first discharge interface is connected; When the control module sends a power consumption request corresponding to the working mode to the vehicle, the control module is configured to: send a first discharge request corresponding to the first discharge mode to the vehicle, so as to request the vehicle to cause the on-board power supply to discharge to the load device through the first discharge interface at a first discharge power, wherein the first discharge power is adapted to the operating power of the load device.

4. The power conversion device according to claim 2, characterized in that: The discharge interface includes a second discharge interface for connecting to the charging grid, and the discharge mode includes a second discharge mode for connecting the second discharge interface to the power supply interface; When the control module adjusts the working mode of the circuit conversion module according to the state information of the power interface, the control module is configured to: adjust the working mode of the circuit conversion module to the second discharge mode according to the third state information of the second discharge interface, wherein the third state information is used to indicate that the second discharge interface is connected; When the control module sends a power consumption request corresponding to the working mode to the vehicle, the control module is configured to: send a second discharge request corresponding to the second discharge mode to the vehicle, so as to request the vehicle to cause the on-board power supply to discharge to the charging grid through the second discharge interface at a second discharge power, and the second discharge power is adapted to the operating power of the charging grid.

5. The power conversion device according to claim 1 is characterized in that: The power interface includes a second charging interface for connecting to the charging grid, the working mode of the circuit conversion module includes a second charging mode for connecting the second charging interface and the power interface, and when the control module adjusts the working mode of the circuit conversion module according to the state information of the power interface, it is configured to: adjust the working mode of the circuit conversion module to the second charging mode according to the fourth state information of the second charging interface, and the fourth state information is used to indicate that the second charging interface is connected; When the control module sends a power consumption request corresponding to the working mode to the vehicle, the control module is configured to: send a second charging request corresponding to the second charging mode to the vehicle to request the vehicle to charge the on-board power supply through the charging grid connected to the second charging interface.

6. The power conversion device according to any one of claims 1 to 5, characterized in that: The power conversion device further includes a detection module, and the control module is further configured to: Determining whether to perform real-time monitoring on the working state of the power conversion device according to the feedback information of the power request; If positive feedback information indicating that the power request is accepted is received, the working state of the power conversion device is monitored in real time by the detection module; If negative feedback information indicating that the power request is rejected is received or feedback information of the power request is not received, the working state of the power conversion device is not monitored in real time.

7. The power conversion device according to claim 6, characterized in that: The detection module includes a current detection module and a voltage detection module. When the control module receives the positive feedback information and monitors the working state of the power conversion device in real time through the detection module, it is configured as follows: If the positive feedback information is received, the voltage between the power interface and the power interface is detected by the voltage detection module, and / or the current between the power interface and the power interface is detected by the current detection module, so as to monitor the working status of the power conversion device in real time.

8. The power conversion device according to claim 7, characterized in that: The power interface includes a first discharge interface for connecting the load device, the power request includes a first discharge request corresponding to a first discharge mode connecting the power interface and the first discharge interface, the positive feedback information includes first positive feedback information for indicating that the first discharge request is accepted, and when the control module receives the positive feedback information and monitors the working state of the power conversion device in real time through the detection module, it is further configured to: If the first positive feedback information is received, the voltage between the power interface and the first discharge interface is detected by the voltage detection module, and the current between the power interface and the first discharge interface is detected by the current detection module; Determining the discharge power of the vehicle power supply according to the current and voltage between the power supply interface and the first discharge interface; Whether the working state of the power conversion device is abnormal is determined according to the discharge power.

9. A method for controlling a vehicle power conversion device, characterized in that: The method comprises: Adjusting the working mode of the circuit conversion module of the power conversion device according to the state information of the power interface of the power conversion device, wherein the working mode is used to enable the circuit conversion module to change the connection between the power interface of the power conversion device and the power interface according to different working modes; A power request corresponding to the working mode is sent to the vehicle, wherein the power request is used to request the vehicle to adjust the energy flow direction and / or energy level between the vehicle's onboard power supply connected to the power interface and the power interface.

10. A vehicle, characterized in that: A power conversion device for a vehicle comprising the vehicle described in claim 1.

Images