Control method, device and system for discharging function outside vehicle

Abstract

The invention relates to the technical field of new energy vehicles, in particular to a control method, device and system for an out-of-vehicle discharging function, and the method comprises the steps that a VCU receives an SOC limit value, and receives an out-of-vehicle discharging function starting signal and an inversion CC signal connection state message; the VCU receives the current SOC value of the BMS; when the VCU determines that the current SOC value is greater than the SOC limit value and the connection state of the received inversion CC signal is connected, the VCU sends an inversion enable signal to the BMS and sends the inversion enable signal to part or all of the IHU, the BCM and the TBOX; the BMS sends an inversion starting signal to the OBC to control the OBC to perform inversion output, the IHU controls a loudspeaker to prompt a user that the inversion function is activated in a voice manner through a hard wire, the BCM controls a vehicle lamp to be turned on to prompt the user, and the TBOX sends a request to a background to request to send inversion function activated information to the user. And the user experience and interestingness of using the discharging function outside the vehicle are improved.

Description

Technical Field

[0001] The present disclosure belongs to the technical field of new energy vehicles, and in particular relates to a control method, device, and system for an off-vehicle discharge function. Background Art

[0002] With the increasing use of electric vehicles, the use of some electrical appliances in cars has gradually become popular. Therefore, the external discharge function has become one of the indispensable functions of many electric vehicles. However, so far, the use of the external discharge function of many vehicles is not intelligent enough, and the user experience is not good. Summary of the Invention

[0003] To address the above-mentioned issues, the present disclosure provides a method, device, and system for controlling an off-vehicle discharge function. Based on VCR control, the method informs users outside the vehicle of the on and off status of the off-vehicle discharge function through one or more of sound, light, and text, thereby enhancing the user experience and fun of using the off-vehicle discharge function.

[0004] In a first aspect, a method for controlling an off-vehicle discharge function is provided, comprising:

[0005] The IHU receives a request to start the off-vehicle discharge function, determines the SOC limit, and sends the SOC limit to the VCU;

[0006] IHU sends the external discharge function start signal to BMS and VCU;

[0007] OBC sends inverter CC signal connection status message to BMS and VCU. The connection status includes: connected and not connected;

[0008] When the BMS receives the signal to start the off-vehicle discharge function and the inverter CC signal connection status is connected, it sends the current SOC value to the VCU;

[0009] When the VCU determines that it has received the off-vehicle discharge function start signal, the current SOC value is greater than the SOC limit, and the received inverter CC signal connection status is connected, it sends an inverter enable signal to the BMS and sends an inverter enable signal to some or all of the IHU, BCM, and TBOX;

[0010] The BMS sends an inverter start signal to the OBC to control the OBC inverter output; after the IHU receives the inverter enable signal, it uses a hard-wired control speaker to remind the user that the inverter function has been activated; after the BCM receives the inverter enable signal, it controls the vehicle lights to turn on to remind the user; after the TBOX receives the inverter enable signal, it sends a request to the background to send the inverter function activation information to the user.

[0011] Furthermore, after the VCU determines that it has received the off-vehicle discharge function start signal, the current SOC value is greater than the SOC limit value, and the received inverter CC signal connection state is connected, the method further includes:

[0012] BMS sends the current SOC value to VCU;

[0013] The VCU determines that the received current SOC value is not greater than the SOC limit value and sends a warning signal to some or all of the IHU, BCM, and TBOX;

[0014] After receiving the warning signal, the IHU hardwires the horn to issue a warning; after receiving the warning signal, the BCM controls the vehicle lights to turn on; after receiving the warning signal, the TBOX sends a request to the backend, requesting that a warning message be sent to the user.

[0015] Further, the SOC limit is a warning limit and the warning signal is a warning signal;

[0016] or,

[0017] The SOC limit value is a cutoff limit value and the warning signal is a stop-inversion enable signal;

[0018] When the SOC limit is a cutoff limit and the warning signal is an inverter stop enable signal, the method further includes: the BCM controlling the OBC to stop off-vehicle discharge.

[0019] Furthermore, the method further comprises:

[0020] VCU receives inverter fault information;

[0021] The VCU stops sending the inverter enable signal and sends a fault stop signal to some or all of the BCM, IHU and TBOX;

[0022] After receiving the fault abort signal, TBOX forwards it to the mobile phone; after receiving the fault abort signal, IHU controls the horn through hard wire to remind the user that the vehicle's external discharge has been aborted due to a fault; after receiving the fault abort signal, BCM controls the vehicle lights to turn on to remind the user.

[0023] Furthermore, after the OBC sends the inverter CC signal connection status message to the BMS and the VCU, the method further includes:

[0024] BMS forwards the inverter CC connection status to IHU and / or TBOX;

[0025] IHU displays the CC connection status on the large screen; TBOX sends a request to the backend, requesting that the connection status be sent to the user.

[0026] In a second aspect, a method for controlling an off-vehicle discharge function is provided, comprising:

[0027] The VCU receives the SOC limit value, the off-vehicle discharge function start signal, and the inverter CC signal connection status message;

[0028] VCU receives the current SOC value from BMS;

[0029] When the VCU determines that the current SOC value is greater than the SOC limit and the received inverter CC signal connection status is connected, it sends an inverter enable signal to the BMS, and sends an inverter enable signal to some or all of the IHU, BCM and TBOX; so that the BMS sends an inverter start signal to the OBC to control the OBC inverter output, the IHU controls the speaker through hard wires to remind the user that the inverter function has been activated, and the BCM controls the car lights to turn on to remind the user; after receiving the inverter enable signal, the TBOX sends a request to the background to send the inverter function activation information to the user.

[0030] Furthermore, when the VCU determines that the current SOC value is greater than the SOC limit value and the received inverter CC signal connection state is connected, after sending the inverter enable signal to the BMS, the method further includes:

[0031] VCU receives the current SOC value from BMS;

[0032] The VCU determines that the current SOC value received is not greater than the SOC limit, and sends a warning signal to some or all of the IHU, BCM, and TBOX, so that the IHU hard-wires the horn to issue a warning; the BCM controls the car lights to turn on; and the TBOX sends a request to the background to send a warning information to the user.

[0033] Further, the SOC limit value is a reminder limit value and the early warning signal is a reminder signal; or, the SOC limit value is a cutoff limit value and the early warning signal is a stop-inversion enable signal.

[0034] Furthermore, the method further comprises:

[0035] VCU receives inverter fault information;

[0036] The VCU stops sending the inverter enable signal and sends a fault stop signal to some or all of the BCM, IHU and TBOX, so that the TBOX can forward the fault stop signal to the mobile phone after receiving it; the IHU hard-wire controls the speaker to remind the user that the vehicle's external discharge is stopped due to a fault; the BCM controls the car lights to turn on to remind the user.

[0037] In a third aspect, a control system for an off-vehicle discharge function is provided, including: an IHU, a VCU, a BMS, an OBC, and a BCM; wherein:

[0038] The IHU is used to receive a request to activate the off-vehicle discharge function, determine the SOC limit, and send the SOC limit to the VCU; send an off-vehicle discharge function activation signal to the BMS and VCU; and after receiving the inverter enable signal, use the hard-wired speaker to remind the user that the inverter function is activated;

[0039] OBC, used to send inverter CC signal connection status messages to BMS and VCU. Connection status includes: connected and disconnected;

[0040] The BMS is used to send the current SOC value to the VCU when it determines that the off-vehicle discharge function start signal has been received and the inverter CC signal connection status is connected; and send the inverter start signal to the OBC to control the OBC inverter output;

[0041] The VCU is used to send an inverter enable signal to the BMS and to send an inverter enable signal to some or all of the IHU, BCM, and TBOX when it determines that the off-vehicle discharge function start signal has been received, the current SOC value is greater than the SOC limit, and the received inverter CC signal connection status is connected;

[0042] BCM is used to control the vehicle lights to turn on after receiving the inverter enable signal to remind the user.

[0043] In a fourth aspect, a control device for an off-vehicle discharge function is provided, comprising:

[0044] The receiving unit is used to receive the SOC limit value, the off-vehicle discharge function start signal and the inverter CC signal connection status message; and the current SOC value of the BMS;

[0045] a determination unit, configured to determine whether a current SOC value is greater than an SOC limit value, and to determine whether a connection state of a received inverter CC signal is connected;

[0046] The sending unit is used to send an inverter enable signal to the BMS when it is determined that the current SOC value is greater than the SOC limit and the received inverter CC signal connection status is connected, and to send an inverter enable signal to some or all of the IHU, BCM and TBOX; so that the BMS can send an inverter start signal to the OBC to control the OBC inverter output, the IHU can control the speaker through hard wire to remind the user that the inverter function has been activated, and the BCM can control the car lights to turn on to remind the user.

[0047] Furthermore, the receiving unit is further configured to receive the current SOC value of the BMS;

[0048] The determining unit is further configured to determine that the received current SOC value is not greater than the SOC limit value;

[0049] The sending unit is also used to send warning signals to some or all of the IHU, BCM and TBOX, so that the IHU hard-wires to control the horn for warning; the BCM controls the car lights to turn on; and the TBOX sends a request to the background to request that warning information be sent to the user.

[0050] Furthermore, the receiving unit is further configured to receive inverter fault information and trigger the sending unit;

[0051] The sending unit is also used to stop sending the inverter enable signal and send a fault stop signal to some or all of the BCM, IHU and TBOX when triggered by the receiving unit, so that the TBOX can forward the fault stop signal to the mobile phone after receiving it; the IHU hard-wire controls the speaker to remind the user that the vehicle's external discharge is stopped due to a fault; the BCM controls the car lights to turn on to remind the user.

[0052] In a fifth aspect, an electronic device is provided, comprising a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other via the communication bus;

[0053] Memory for storing computer programs;

[0054] The processor is used to implement the steps of the method of the second aspect when executing the program stored in the memory.

[0055] In a sixth aspect, a computer storage medium is provided, wherein the computer storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method in the second aspect are implemented.

[0056] Compared with the prior art, the present disclosure has the following advantages:

[0057] In the solution disclosed herein, the IHU and VCU control other controllers to perform the off-vehicle discharge function. The VCU makes a judgment and controls the relevant controllers to turn on or off the off-vehicle discharge function when the conditions are met. It also informs the user outside the vehicle of the on / off status of the inverter function through sound, light, and text, thereby improving the user experience and fun of using the off-vehicle discharge function.

[0058] Other features and advantages of the present disclosure will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present disclosure. The purposes and other advantages of the present disclosure can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0060] Figure 1 A logic diagram of a control method for an off-vehicle discharge function according to an embodiment of the present disclosure is shown;

[0061] Figure 2 shows a timing diagram of a method for controlling an off-vehicle discharge function according to an embodiment of the present disclosure;

[0062] Figure 3 A flow chart of a method for controlling an off-vehicle discharge function according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0063] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present disclosure without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0064] The control system of the vehicle external discharge function disclosed in the present invention is as follows Figure 1 As shown, it includes: IHU (In-Vehicle Infotainment Unit), VCU (Vehicle Control Unit), OBC (On-Board Charger), BMS (Battery Management System), BCM (Body Control Module) and TBOX;

[0065] Figure 1 The audio is controlled by the control system, and the company background is a specific way to provide the voice package required for adaptation of this disclosure. The embodiments of this disclosure are not limited to the company background, and any platform, server, hard disk, etc. that can provide the voice package required for adaptation of this disclosure can be used.

[0066] The IHU receives a request to enable the off-vehicle discharge function, determines the SOC (State of Charge) limit, and sends the SOC limit to the VCU; sends an off-vehicle discharge function enable signal to the BMS and VCU; and, upon receiving the inverter enable signal, uses a hard-wired speaker to alert the user that the inverter function is activated.

[0067] OBC, used to send inverter CC (Constant Current) signal connection status messages to the BMS and VCU. The connection status includes: connected and disconnected;

[0068] The BMS is used to send the current SOC value to the VCU when it determines that the off-vehicle discharge function start signal has been received and the inverter CC signal connection status is connected; and send the inverter start signal to the OBC to control the OBC inverter output;

[0069] The VCU is used to send an inverter enable signal to the BMS and to send an inverter enable signal to some or all of the IHU, BCM, and TBOX when it determines that the off-vehicle discharge function start signal has been received, the current SOC value is greater than the SOC limit, and the received inverter CC signal connection status is connected;

[0070] BCM is used to control the vehicle lights to turn on after receiving the inverter enable signal to remind the user.

[0071] TBOX is used to send a request to the backend after receiving the inverter enable signal, requesting that the inverter function activation information be sent to the user.

[0072] It should be noted here that only one of the IHU, BCM and TBOX can be included in the control system, or two or all of them can be included in the control system.

[0073] The activation of the above-mentioned inverter function indicates that the off-vehicle discharge function is turned on.

[0074] Furthermore, the above control system also includes TBOX;

[0075] The BMS is also used to send the current SOC value to the VCU after receiving the inverter enable signal;

[0076] The VCU is also used to determine that the current SOC value received is not greater than the SOC limit value and send a warning signal to some or all of the IHU, BCM and TBOX;

[0077] IHU is also used to hardwire the loudspeaker to issue an early warning after receiving an early warning signal;

[0078] BCM is also used to control the lights to turn on after receiving a warning signal;

[0079] TBOX is used to send a request to the backend after receiving the warning signal, requesting that warning information be sent to the user.

[0080] Further, the SOC limit is a warning limit and the warning signal is a warning signal;

[0081] Alternatively, the SOC limit is a cutoff limit and the warning signal is an inverter stop enable signal;

[0082] When the SOC limit value is a cutoff limit value and the warning signal is a stop-inversion enable signal, the BCM is further configured to control the OBC to stop external discharge.

[0083] Furthermore, the VCU is further configured to receive inverter fault information; the VCU stops sending the inverter enable signal and sends a fault stop signal to some or all of the BCM, IHU, and TBOX;

[0084] TBOX is also used to forward the fault abort signal to the mobile phone after receiving it; after the IHU receives the fault abort signal, the hard-wired speaker is controlled to remind the user that the vehicle's external discharge is stopped due to a fault; after the BCM receives the fault abort signal, the headlights are turned on to remind the user.

[0085] The above-mentioned vehicle lamp can be a vehicle headlight or other vehicle lamp.

[0086] Figure 2 The timing diagram of the control method of the vehicle external discharge function according to the embodiment of the present disclosure is shown, and a preferred implementation scheme of the embodiment is given. Figure 2 As shown, the control method of the off-vehicle discharge function of the embodiment of the present disclosure is specifically as follows:

[0087] Phase 1: Setup

[0088] After the user turns on the off-vehicle discharge function, the IHU screen can connect to the network. The user downloads the user reminder voice package preset by the company platform and loads it into the inverter function of the local IHU. The initial voice package is selected by default at the beginning. The user can select the SOC reminder limit and SOC cutoff limit on the IHU screen. After the setting is completed, the IHU screen sends a signal to the VCU for storage and retention. The reminder power can be memorized after power off.

[0089] It should be noted that the SOC reminder limit is used for reminder purposes, while the SOC cutoff limit determines the charge level at which the off-board discharge function is completely disabled. These values can be set by the user via the main screen. For example, if the SOC cutoff limit is less than 20% of the total battery capacity, you can set this value via the main screen. The set value cannot be overwritten by the default value after power cycling and must be saved.

[0090] Phase 2: Preparation

[0091] When the user activates the external discharge function and completes the setup, the IHU screen sends a signal to the VCU and BMS indicating the function is enabled. Upon receiving this signal, the BMS calculates the remaining mileage using the remaining SOC, and then sends the remaining mileage to the IHU screen and TBOX. If an inverter gun is plugged into the OBC at this time, the OBC receives the inverter CC signal and sends the inverter CC connection status to the BMS and VCU. The BMS can also forward the inverter CC connection status to the IHU and TBOX.

[0092] The third stage: inverter output stage

[0093] The VCU determines whether the conditions are met. If so, the off-vehicle discharge function can be turned on and an inverter enable signal is sent to the IHU, BCM, and BMS to activate the off-vehicle discharge function. The conditions are: the CC connection status is connected and the current SOC value is not less than the SOC reminder limit. After the IHU large screen receives the inverter enable signal, it controls the speaker through a hard line to remind the user that the inverter function has been activated; after the BCM receives the inverter enable signal, it controls the vehicle headlights to flash several times to remind the user; the BMS sends an inverter start signal to the OBC to control the OBC inverter output, and the off-vehicle discharge function starts. After the TBOX receives the inverter enable signal, it controls the background to send a reminder message. The BMS continuously sends the current SOC value to the VCU.

[0094] Stage 4: Reminder

[0095] When the battery SOC reaches the set reminder charge limit, the reminder phase begins. The BMS sends the SOC to the VCU. Upon receiving this information, the VCU determines that the SOC reminder limit has been reached and sends a reminder signal to the IHU, BCM, and TBOX. The IHU receives this information through a hardwired horn to issue a reminder; the BCM flashes the vehicle's headlights for a set period of time; and the TBOX sends a request to the backend, requesting that the user be notified that the external discharge limit is about to be reached.

[0096] Phase 5: Deadline

[0097] When the battery SOC reaches the SOC cutoff limit, the battery enters the cutoff phase. The BMS sends the current SOC to the VCU, which determines that the cutoff limit has been reached and stops sending the inverter enable signal to the IHU, BCM, TBOX, and BMS. Upon receiving the falling edge of the inverter enable signal, the IHU hardwires the horn to issue a warning. The BCM flashes the vehicle's headlights for a set period of time. The TBOX sends a request to the backend, requesting that the user be notified that the "offboard discharge function has stopped." The BMS then instructs the OBC to stop offboard discharge.

[0098] In addition to the five stages above, there may be failure stages:

[0099] When a fault occurs during the inverter discharge process, causing the inverter function to be interrupted, the fault phase begins. Upon receiving the fault information, the VCU stops sending the inverter enable signal and sends a fault abort signal to the BCM, IHU, and TBOX. TBOX forwards this to the mobile app. The IHU hardwires the horn to alert the user that "fault aborted off-vehicle discharge." The BCM controls the vehicle's headlights to flash at different frequencies for a specified period of time to alert the user.

[0100] In the solution of the embodiment of the present disclosure, a reminder voice package of the off-vehicle discharge function can be customized, and the user can be reminded of the mileage available based on the set SOC limit. The user outside the vehicle can be informed of the on / off status of the inverter function through sound, light, and text information, thereby improving the user's experience and fun in using the off-vehicle discharge function.

[0101] Specifically, users can customize the off-vehicle discharge function on the large screen or APP, customize the reminder sound of off-vehicle discharge and the vehicle lighting control mode, and set the SOC limit of the off-vehicle discharge function, that is, the power limit. After the power limit is set, the vehicle calculates the remaining mileage and reminds the user. When the off-vehicle discharge power is lower than the SOC reminder limit of the off-vehicle discharge function set by the user, the vehicle controls the on-board audio to remind the user, and at the same time sends a reminder to the user's mobile phone APP through the gateway. When the vehicle's SOC is lower than the SOC cut-off limit, the VCU controls the off-vehicle discharge function to turn off, and the audio and APP remind the user that the off-vehicle discharge function is turned off. When the off-vehicle discharge function is abnormally turned off, reminders are also given through the audio, APP, display and lights.

[0102] Based on the same inventive concept, the present disclosure also provides a method for controlling the discharge function outside the vehicle standing on the VCR side, such as Figure 3 As shown, the following steps are included:

[0103] Step 301: The VCU receives the SOC limit value, the off-vehicle discharge function start signal, and the inverter CC signal connection status message;

[0104] Step 302: The VCU receives the current SOC value of the BMS;

[0105] Step 303: When the VCU determines that the current SOC value is greater than the SOC limit and the received inverter CC signal connection status is connected, it sends an inverter enable signal to the BMS and sends an inverter enable signal to some or all of the IHU, BCM, and TBOX;

[0106] The purpose of sending the inverter enable signal is to enable the BMS to send an inverter start signal to the OBC to control the OBC inverter output. The IHU uses hard-wired control to remind the user through the speaker voice that the inverter function has been activated, and the BCM controls the vehicle lights to turn on to remind the user. After receiving the inverter enable signal, the TBOX sends a request to the background to send the inverter function activation information to the user.

[0107] Furthermore, when the VCU determines that the current SOC value is greater than the SOC limit value and the received inverter CC signal connection state is connected, after sending the inverter enable signal to the BMS, the method further includes:

[0108] VCU receives the current SOC value from BMS;

[0109] The VCU determines that the current SOC value received is not greater than the SOC limit, and sends a warning signal to some or all of the IHU, BCM, and TBOX, so that the IHU hard-wires the horn to issue a warning; the BCM controls the car lights to turn on; and the TBOX sends a request to the background to send a warning information to the user.

[0110] Further, the SOC limit is a reminder limit and the warning signal is a reminder signal; or, the SOC limit is a cutoff limit and the warning signal is a stop-inversion enable signal.

[0111] Furthermore, it also includes:

[0112] VCU receives inverter fault information;

[0113] The VCU stops sending the inverter enable signal and sends a fault stop signal to some or all of the BCM, IHU and TBOX, so that the TBOX can forward the fault stop signal to the mobile phone after receiving it; the IHU hard-wire controls the speaker to remind the user that the vehicle's external discharge is stopped due to a fault; the BCM controls the car lights to turn on to remind the user.

[0114] Based on the above method, an embodiment of the present disclosure further provides a control device for an off-vehicle discharge function corresponding to the above method, comprising: a receiving unit, a determining unit, and a sending unit;

[0115] The receiving unit is used to receive the SOC limit value, the off-vehicle discharge function start signal and the inverter CC signal connection status message; and the current SOC value of the BMS;

[0116] a determination unit, configured to determine whether a current SOC value is greater than an SOC limit value, and to determine whether a connection state of a received inverter CC signal is connected;

[0117] The sending unit is used to send an inverter enable signal to the BMS when it is determined that the current SOC value is greater than the SOC limit and the received inverter CC signal connection status is connected, and to send an inverter enable signal to some or all of the IHU, BCM and TBOX; so that the BMS can send an inverter start signal to the OBC to control the OBC inverter output, the IHU can control the speaker through hard wire to remind the user that the inverter function has been activated, and the BCM can control the car lights to turn on to remind the user; after receiving the inverter enable signal, the TBOX sends a request to the background to request that the inverter function activation information be sent to the user.

[0118] Based on the same inventive concept as the above disclosure, the present disclosure also provides an electronic device. The electronic device of the present disclosure embodiment includes at least one processor and at least one memory electrically connected to each other, the memory being electrically connected to the processor, wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the method described above.

[0119] It should be noted that the electrical connection between the above-mentioned units does not necessarily mean the connection between lines. An indirect connection method can be applied to the embodiments of the present disclosure as long as the purpose of the present disclosure is achieved.

[0120] Based on the same inventive concept, the present disclosure further provides a computer storage medium, wherein the computer storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the above method are implemented.

[0121] Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A method for controlling an off-vehicle discharge function, characterized in that: include: The IHU receives a request to start the off-vehicle discharge function, determines the SOC limit, and sends the SOC limit to the VCU; IHU sends the external discharge function start signal to BMS and VCU; OBC sends inverter CC signal connection status messages to BMS and VCU. The connection status includes: connected and not connected; When the BMS receives the signal to start the off-vehicle discharge function and the inverter CC signal connection status is connected, it sends the current SOC value to the VCU; When the VCU determines that it has received the off-vehicle discharge function start signal, the current SOC value is greater than the SOC limit, and the received inverter CC signal connection status is connected, it sends an inverter enable signal to the BMS and sends an inverter enable signal to some or all of the IHU, BCM, and TBOX; The BMS sends an inverter start signal to the OBC to control the OBC inverter output; after the IHU receives the inverter enable signal, it uses a hard-wired control speaker to remind the user that the inverter function has been activated; after the BCM receives the inverter enable signal, it controls the vehicle lights to turn on to remind the user; after the TBOX receives the inverter enable signal, it sends a request to the background to send the inverter function activation information to the user.

2. The method for controlling the external discharge function of a vehicle according to claim 1, characterized in that: After the VCU determines that a signal for starting the off-vehicle discharge function is received, the current SOC value is greater than the SOC limit value, and the received inverter CC signal connection state is connected, the method further includes: BMS sends the current SOC value to VCU; The VCU determines that the received current SOC value is not greater than the SOC limit value and sends a warning signal to some or all of the IHU, BCM, and TBOX; After receiving the warning signal, the IHU hardwires the horn to issue a warning; after receiving the warning signal, the BCM controls the vehicle lights to turn on; after receiving the warning signal, the TBOX sends a request to the backend, requesting that a warning message be sent to the user.

3. The method for controlling the external discharge function of a vehicle according to claim 2, characterized in that: The SOC limit is a warning limit and the warning signal is a warning signal; or, The SOC limit value is a cutoff limit value and the warning signal is a stop-inversion enable signal; When the SOC limit is a cutoff limit and the warning signal is an inverter stop enable signal, the method further includes: the BCM controlling the OBC to stop off-vehicle discharge.

4. The method for controlling the off-vehicle discharge function according to any one of claims 1 to 3, characterized in that: The method further comprises: VCU receives inverter fault information; The VCU stops sending the inverter enable signal and sends a fault stop signal to some or all of the BCM, IHU and TBOX; After receiving the fault stop signal, the BCM controls the vehicle lights to turn on to alert the user. After receiving the fault stop signal, the IHU controls the horn through hard wires to alert the user that the vehicle's external discharge has been stopped due to the fault. After receiving the fault stop signal, the TBOX forwards it to the mobile phone.

5. A method for controlling an off-vehicle discharge function, comprising: The VCU receives the SOC limit value, the off-vehicle discharge function start signal, and the inverter CC signal connection status message; VCU receives the current SOC value from BMS; When the VCU determines that the current SOC value is greater than the SOC limit and the received inverter CC signal connection status is connected, it sends an inverter enable signal to the BMS, and sends an inverter enable signal to some or all of the IHU, BCM and TBOX; so that the BMS sends an inverter start signal to the OBC to control the OBC inverter output, the IHU controls the speaker through hard wires to remind the user that the inverter function has been activated, and the BCM controls the car lights to turn on to remind the user; after receiving the inverter enable signal, the TBOX sends a request to the background to send the inverter function activation information to the user.

6. The method for controlling the off-vehicle discharge function according to claim 5, characterized in that: When the VCU determines that the current SOC value is greater than the SOC limit value and the received inverter CC signal connection state is connected, after sending the inverter enable signal to the BMS, the method further includes: VCU receives the current SOC value from BMS; The VCU determines that the current SOC value received is not greater than the SOC limit, and sends a warning signal to some or all of the IHU, BCM, and TBOX, so that the IHU hard-wires the horn to issue a warning; the BCM controls the car lights to turn on; and the TBOX sends a request to the background to send a warning information to the user.

7. The method for controlling the off-vehicle discharge function according to claim 5 or 6, characterized in that: The method further comprises: VCU receives inverter fault information; The VCU stops sending the inverter enable signal and sends a fault stop signal to some or all of the BCM, IHU and TBOX, so that the TBOX can forward the fault stop signal to the mobile phone after receiving it; the IHU hard-wire controls the speaker to remind the user that the vehicle's external discharge is stopped due to a fault; the BCM controls the car lights to turn on to remind the user.

8. A control system for an off-vehicle discharge function, characterized in that: include: IHU, VCU, BMS, OBC and BCM; among them: The IHU is used to receive a request to activate the off-vehicle discharge function, determine the SOC limit, and send the SOC limit to the VCU; send an off-vehicle discharge function activation signal to the BMS and VCU; and after receiving the inverter enable signal, use the hard-wired speaker to remind the user that the inverter function is activated; OBC, used to send inverter CC signal connection status messages to BMS and VCU. Connection status includes: connected and disconnected; The BMS is used to send the current SOC value to the VCU when it determines that the off-vehicle discharge function start signal has been received and the inverter CC signal connection status is connected; and send the inverter start signal to the OBC to control the OBC inverter output; The VCU is used to send an inverter enable signal to the BMS and to send an inverter enable signal to some or all of the IHU, BCM, and TBOX when it determines that the off-vehicle discharge function start signal has been received, the current SOC value is greater than the SOC limit, and the received inverter CC signal connection status is connected; BCM is used to control the vehicle lights to turn on after receiving the inverter enable signal to remind the user. After receiving the inverter enable signal, TBOX sends a request to the backend to send the inverter function activation information to the user.

9. A control device for an off-vehicle discharge function, characterized in that: include: A receiving unit is used to receive the SOC limit value, the off-vehicle discharge function start signal, and the inverter CC signal connection status message; And receive the current SOC value of BMS; a determination unit, configured to determine whether a current SOC value is greater than an SOC limit value, and to determine whether a connection state of a received inverter CC signal is connected; The sending unit is used to send an inverter enable signal to the BMS when it is determined that the current SOC value is greater than the SOC limit and the received inverter CC signal connection status is connected, and to send an inverter enable signal to some or all of the IHU, BCM and TBOX; so that the BMS can send an inverter start signal to the OBC to control the OBC inverter output, the IHU can control the speaker through hard wire to remind the user that the inverter function has been activated, and the BCM can control the car lights to turn on to remind the user; after receiving the inverter enable signal, the TBOX sends a request to the background to request that the inverter function activation information be sent to the user.

10. An electronic device, characterized in that: It includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus; Memory for storing computer programs; A processor is configured to implement the steps of the method according to any one of claims 5 to 7 when executing a program stored in a memory.

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