Vehicle power supply awakening method, storage medium, controller, power supply circuit and vehicle

Abstract

The invention relates to the technical field of vehicles, in particular to a power supply awakening method for a vehicle, a power supply circuit and the vehicle, and aims at solving the problems that when the vehicle cannot be awakened, an existing power connection method is not only complex, but also has safety risks. In order to achieve the purpose, the power supply circuit for the vehicle comprises a vehicle high-voltage power supply for supplying power to the vehicle when the vehicle is driven, a vehicle low-voltage power supply for supplying power to the vehicle when the vehicle is awakened, a charging auxiliary power supply interface connected with the vehicle low-voltage power supply, and a charging main power supply interface, the charging main power supply interface is connected with a vehicle high-voltage power supply; and the vehicle domain controller is in communication connection with the vehicle high-voltage power supply, the vehicle low-voltage power supply, the charging main power supply interface and the charging auxiliary power supply interface. Therefore, when the vehicle cannot be awakened, the positive and negative electrodes of the external lap joint power supply are lapped to the positive and negative electrodes of the charging auxiliary power supply interface to charge the vehicle low-voltage power supply safely, conveniently and easily.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and particularly provides a power supply wake-up method, a storage medium, a controller, a power supply circuit and a vehicle for a vehicle. Background Art

[0002] Currently, for smart electric vehicles on the market, after the vehicle's high-voltage power supply is cut off, in the absence of a long-term working low-voltage DC power supply, the on-vehicle low-voltage battery is often required to supply power to many devices on the vehicle. Due to the increase in on-vehicle intelligent devices, such as the sentry mode, etc., the vehicle needs to work for a long time after the high-voltage power supply is cut off. If the vehicle has not been started for a long time, it is easy to cause the on-vehicle low-voltage battery to discharge. When starting the vehicle next time, due to the discharge of the low-voltage battery, a series of operations such as unlocking and applying high voltage to the vehicle cannot be completed. At this time, an external low-voltage power supply is required to wake up, unlock and start the vehicle.

[0003] Currently, many models on the market no longer have a mechanical key. After the low-voltage battery discharges, it is often impossible to open the door or the engine hood to jump-start the on-vehicle low-voltage battery. The existing methods usually involve disassembling some components of the vehicle to expose the on-vehicle battery and then performing jump-starting, or leaving some jump-starting wire harnesses outside the vehicle to unlock or jump-start through the reserved wire harnesses. However, the existing jump-starting methods are not only complex but also have safety risks. Therefore, how to more safely and conveniently achieve jump-starting with an external low-voltage power supply has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0004] The present invention aims to solve the above technical problems, that is, to solve the problem that when the vehicle cannot be woken up, the existing jump-starting methods are not only complex but also have safety risks.

[0005] In a first aspect, the present invention provides a power supply wake-up method for a vehicle, and the power supply wake-up method includes: obtaining the voltage of the vehicle's low-voltage power supply; obtaining the charging information of the charging main power supply interface; determining whether the vehicle is in a non-wakeable state based on the voltage of the vehicle's low-voltage power supply and the charging information of the charging main power supply interface; selectively controlling the connection or disconnection of the external power supply and the vehicle's low-voltage power supply based on the determination result.

[0006] In a specific implementation manner of the above power supply wake-up method for a vehicle, the step of "determining whether the vehicle is in a non-wakeable state based on the voltage of the vehicle's low-voltage power supply and the charging information of the charging main power supply interface" further includes: determining whether the vehicle's low-voltage power supply is discharged based on the voltage of the vehicle's low-voltage power supply; determining whether the vehicle is in a charging state based on the charging information of the charging main power supply interface; if the vehicle's low-voltage power supply is discharged and the vehicle is not in a charging state, then determine that the vehicle is in a non-wakeable state.

[0007] In the specific implementation of the above power supply wake-up method for a vehicle, the step of "selectively controlling the connection or disconnection of an external power supply and a vehicle low-voltage power supply based on the judgment result" further includes: when the vehicle low-voltage power supply is powered off and the vehicle is in an uncharged state, controlling the connection of the external power supply and the vehicle low-voltage power supply.

[0008] In the specific implementation of the above power supply wake-up method for a vehicle, the step of "selectively controlling the connection or disconnection of an external power supply and a vehicle low-voltage power supply based on the judgment result" also includes: when the vehicle low-voltage power supply is not powered off and the vehicle is in an uncharged state, controlling the disconnection of the external power supply and the vehicle low-voltage power supply.

[0009] In the specific implementation of the above power supply wake-up method for a vehicle, the step of "selectively controlling the connection or disconnection of an external power supply and a vehicle low-voltage power supply based on the judgment result" further includes: controlling a switch to conduct the charging auxiliary power supply interface and the vehicle low-voltage power supply; controlling the door unlock actuator and / or the engine hood unlock actuator and / or the trunk lid unlock actuator to unlock.

[0010] In the specific implementation of the above power supply wake-up method for a vehicle, the step of "selectively controlling the connection or disconnection of an external power supply and a vehicle low-voltage power supply based on the judgment result" further includes: controlling a switch to conduct the charging auxiliary power supply interface and the unlock actuator; controlling the door unlock actuator and / or the engine hood unlock actuator and / or the trunk lid unlock actuator to unlock.

[0011] In the specific implementation of the above power supply wake-up method for a vehicle, the method of the step of "acquiring the charging information of the charging main power supply interface" further includes: acquiring the charging information of the charging signal interface; judging the charging information of the charging main power supply interface based on the charging information of the charging signal interface; judging that the vehicle is in a charging state when a charging signal is detected at the charging signal interface; judging that the vehicle is in an uncharged state when no charging signal is detected at the charging signal interface.

[0012] In a second aspect, the present invention further provides a scale storage medium, in which multiple program codes are stored, and the program codes are adapted to be loaded and run by a processor to execute the power supply wake-up method in any one of the above technical solutions.

[0013] In a third aspect, the present invention further provides a controller capable of running a computer program, and when the controller executes the computer program, it implements the power supply wake-up method in any one of the above technical solutions.

[0014] In a fourth aspect, the present invention further provides a power supply circuit for a vehicle, the power supply circuit comprising: a vehicle high-voltage power source for powering the vehicle when driving the vehicle; a vehicle low-voltage power source for powering the vehicle when waking up the vehicle; a charging auxiliary power interface connected to the vehicle low-voltage power source; a charging main power interface connected to the vehicle high-voltage power source; a vehicle domain controller communicatively connected to the vehicle high-voltage power source, the vehicle low-voltage power source, the charging main power interface, and the charging auxiliary power interface; the power supply circuit being capable of performing the power supply wake-up method according to any one of the above technical solutions.

[0015] In a specific embodiment of the above power supply circuit for a vehicle, the vehicle further comprises an unlocking actuator communicatively connected to the vehicle domain controller, a switch is provided between the charging auxiliary power interface, the vehicle low-voltage power source, and the unlocking actuator, and the vehicle domain controller is communicatively connected to the switch to control the on / off of the connection between the charging auxiliary power interface, the vehicle low-voltage power source, and the unlocking actuator, the power supply circuit being capable of performing the power supply wake-up method according to any one of the above technical solutions.

[0016] In a fifth aspect, the present invention further provides a vehicle comprising the power supply circuit according to any one of the above technical solutions.

[0017] The beneficial effects achieved by the present invention are as follows: First, obtain the voltage value of the vehicle low-voltage power source and the charging information of the charging main power interface, and then determine whether the vehicle is in a state where it cannot be woken up based on the voltage of the vehicle low-voltage power source and the charging information of the charging main power interface. If the vehicle is in a wakeable state, control the external power source and the vehicle low-voltage power source to disconnect, and unlock and power the vehicle through the vehicle low-voltage power source or the charging gun. If the vehicle is in an unwakeable state, control the external power source to be connected to the vehicle low-voltage power source to charge the vehicle low-voltage power source, thereby ensuring that the vehicle can be unlocked. Compared with the existing methods, the solution of the present invention is safer, more convenient, and easier to implement, and solves the problems that the existing jump-start methods are not only complex but also have safety risks.

[0018] Solution 1: A power supply wake-up method for a vehicle, characterized in that the power supply wake-up method comprises: obtaining the voltage of the vehicle low-voltage power source; obtaining the charging information of the charging main power interface; determining whether the vehicle is in a state where it cannot be woken up based on the voltage of the vehicle low-voltage power source and the charging information of the charging main power interface; selectively controlling the external power source to be connected to or disconnected from the vehicle low-voltage power source based on the determination result.

[0019] Solution 2. The power supply wake-up method according to Solution 1, characterized in that the step of "judging whether the vehicle is in an un-wakeable state based on the voltage of the vehicle's low-voltage power supply and the charging information of the charging main power supply interface" further includes: judging whether the vehicle's low-voltage power supply is powered off based on the voltage of the vehicle's low-voltage power supply; judging whether the vehicle is in a charging state based on the charging information of the charging main power supply interface; if the vehicle's low-voltage power supply is powered off and the vehicle is not in a charging state, then judge that the vehicle is in an un-wakeable state.

[0020] Solution 3. The power supply wake-up method according to Solution 2, characterized in that the step of "selectively controlling the connection or disconnection of the external power supply and the vehicle's low-voltage power supply based on the judgment result" further includes: when the vehicle's low-voltage power supply is powered off and the vehicle is in an uncharged state, controlling the external power supply to be connected to the vehicle's low-voltage power supply.

[0021] Solution 4. The power supply wake-up method according to Solution 3, characterized in that the step of "selectively controlling the connection or disconnection of the external power supply and the vehicle's low-voltage power supply based on the judgment result" further includes: when the vehicle's low-voltage power supply is not powered off and the vehicle is in an uncharged state, controlling the external power supply to be disconnected from the vehicle's low-voltage power supply.

[0022] Solution 5. The power supply wake-up method according to Solution 2, characterized in that the step of "selectively controlling the connection or disconnection of the external power supply and the vehicle's low-voltage power supply based on the judgment result" further includes: controlling the switch to conduct the charging auxiliary power supply interface and the vehicle's low-voltage power supply; controlling the door unlock actuator and / or the engine hood unlock actuator and / or the trunk lid unlock actuator to unlock.

[0023] Solution 6. The power supply wake-up method according to Solution 2, characterized in that the step of "selectively controlling the connection or disconnection of the external power supply and the vehicle's low-voltage power supply based on the judgment result" further includes: controlling the switch to conduct the charging auxiliary power supply interface and the unlock actuator; controlling the door unlock actuator and / or the engine hood unlock actuator and / or the trunk lid unlock actuator to unlock.

[0024] Solution 7. The power supply wake-up method according to any one of Solutions 2-6, characterized in that the method of the step of "acquiring the charging information of the charging main power supply interface" further includes: acquiring the charging information of the charging signal interface; judging the charging information of the charging main power supply interface based on the charging information of the charging signal interface; judging that the vehicle is in a charging state when a charging signal is detected at the charging signal interface; judging that the vehicle is in an uncharged state when no charging signal is detected at the charging signal interface.

[0025] Solution 8. A readable storage medium, in which multiple program codes are stored, characterized in that the program codes are adapted to be loaded and run by a processor to execute the power supply wake-up method according to any one of Solutions 1 to 7.

[0026] Solution 9. A controller capable of running a computer program, characterized in that when the controller executes the computer program, it implements the power supply wake-up method described in any one of Solutions 1 to 7.

[0027] Solution 10. A power supply circuit for a vehicle, characterized in that the power supply circuit includes: a vehicle high-voltage power supply for supplying power to the vehicle when driving the vehicle; a vehicle low-voltage power supply for supplying power to the vehicle when waking up the vehicle; a charging auxiliary power supply interface connected to the vehicle low-voltage power supply; a charging main power supply interface connected to the vehicle high-voltage power supply; a vehicle domain controller communicatively connected to the vehicle high-voltage power supply, the vehicle low-voltage power supply, the charging main power supply interface, and the charging auxiliary power supply interface; and the power supply circuit is capable of executing the power supply wake-up method described in any one of Solutions 1 to 4.

[0028] Solution 11. The power supply circuit for a vehicle according to Solution 10, characterized in that the vehicle further includes an unlocking actuator communicatively connected to the vehicle domain controller, a switch is provided between the charging auxiliary power supply interface and the vehicle low-voltage power supply and the unlocking actuator, and the vehicle domain controller is communicatively connected to the switch to control the on / off of the connection between the charging auxiliary power supply interface and the vehicle low-voltage power supply and the unlocking actuator, and the power supply circuit is capable of executing the power supply wake-up method described in any one of Solutions 1 to 7.

[0029] Solution 12. A vehicle, characterized in that the vehicle includes the power supply circuit described in any one of Solutions 10-11. Description of the Drawings

[0030] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, in which:

[0031] Figure 1 is a schematic diagram of a power supply circuit in an embodiment of the present invention;

[0032] Figure 2 is a schematic diagram of a vehicle charging socket in an embodiment of the present invention;

[0033] Figure 3 is a main flowchart of the control method of the present invention;

[0034] Figure 4 is a flowchart of step S2 of the control method of the present invention;

[0035] Figure 5 is a flowchart of step S3 of the control method of the present invention;

[0036] Figure 6It is a flowchart of the first implementation manner of step S4 of the control method of the present invention;

[0037] Figure 7 It is a flowchart of the second implementation manner of step S4 of the control method of the present invention.

[0038] List of reference numerals:

[0039] 1 - Power supply circuit;

[0040] 11 - Vehicle low - voltage power supply;

[0041] 12 - Charging main power supply interface;

[0042] 13 - Charging auxiliary power supply interface;

[0043] 14 - Vehicle domain controller;

[0044] 15 - Charging signal interface;

[0045] 16 - Unlock actuator

[0046] 17 - Vehicle charging socket;

[0047] 2 - External power supply. Detailed implementation manners

[0048] The preferred implementation manners of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these implementation manners are only used to explain the technical principle of the present invention and are not intended to limit the protection scope of the present invention. Those skilled in the art can make adjustments according to needs to adapt to specific application scenarios. For example, although the description in the specification is based on a door unlock actuator, the present invention can obviously adopt various other unlock actuators.

[0049] In the description of the present invention, "module" and "processor" can include hardware, software, or a combination of both. A module can include a hardware circuit, various suitable sensors, communication ports, memory, and can also include a software part, such as program code, or a combination of software and hardware. A processor can be a central processing unit, a microprocessor, an image processor, a digital signal processor, or any other suitable processor. The processor has data and / or signal processing functions. The processor can be implemented in software, in hardware, or in a combination of both. A non - transitory computer - readable storage medium includes any suitable medium for storing program code, such as magnetic disks, hard disks, optical disks, flash memories, read - only memories, random - access memories, and so on. The singular terms "a" and "this" can also include the plural form.

[0050] Embodiment 1

[0051] AsFigure 1 , Figure 2 As shown in Figure 2 , to solve the problems that the existing power connection method is not only complex but also has safety risks, the power supply circuit for a vehicle according to the present invention includes:

[0052] A vehicle high-voltage power source (not shown in the figure), which is used to supply power to the vehicle when driving the vehicle;

[0053] A vehicle low-voltage power source 11, which is used to supply power to the vehicle when waking up the vehicle;

[0054] A vehicle charging socket 17, which is arranged on the vehicle body. The vehicle charging socket 17 includes a charging auxiliary power interface 13 and a charging main power interface 12. Among them, the charging auxiliary power interface 13 is connected to the vehicle low-voltage power source 11, and the charging main power interface 12 is connected to the vehicle high-voltage power source;

[0055] A vehicle domain controller 14, and the vehicle domain controller 14 is communicatively connected to the vehicle high-voltage power source, the vehicle low-voltage power source 11, the charging main power interface 12, and the charging auxiliary power interface 13.

[0056] The vehicle further includes an unlocking actuator 16, which is used to unlock the vehicle door, engine hood, trunk lid, etc. The unlocking actuator 16 is communicatively connected to the vehicle domain controller 14.

[0057] In addition, an external power source 2 is further included in this embodiment. The external power source 2 can be connected to the charging auxiliary power interface 13 on the vehicle charging socket 17.

[0058] Taking the door unlocking actuator 16 as an example for introduction, under normal circumstances, the vehicle low-voltage power source 11 supplies power to the door unlocking actuator 16 in the vehicle. When the user needs to open the vehicle door, pressing the unlocking button on the vehicle key to send an unlocking signal can wake up the ECU that controls the vehicle Bluetooth key and open the vehicle door, and the function is normally realized. When the user inserts a charging gun into the vehicle charging socket 17 to charge the vehicle, since the charging gun is also correspondingly provided with a charging main power plug and a charging auxiliary power plug, the charging main power plug is inserted into the charging main power interface 12, and the charging auxiliary power plug is inserted into the charging auxiliary power interface 13. At this time, the vehicle domain controller 14 will make the charging gun charge both the vehicle high-voltage power source and the vehicle low-voltage power source 11, thereby ensuring that the vehicle low-voltage power source 11 will not lose power under normal circumstances.

[0059] However, when the vehicle owner does not charge the vehicle for a long time, the low-voltage battery is prone to power loss, resulting in the inability to unlock the vehicle door. At this time, if there are no charging piles, charging guns or other devices near the vehicle, it is necessary to connect an external power source 2 to charge the vehicle low-voltage power supply 11. In the case of adopting this embodiment, since the charging auxiliary power supply interface 13 on the vehicle charging socket 17 is connected to the vehicle low-voltage power supply 11, the vehicle owner only needs to insert the positive and negative poles of the external power source 2 into the positive and negative poles of the charging auxiliary power supply interface 13 to achieve charging of the vehicle low-voltage power supply 11, so that the vehicle door can be unlocked when the voltage of the vehicle low-voltage power supply 11 reaches the voltage requirement of the door unlocking actuator. Compared with the existing solutions that require disassembling some components to expose the battery or leaving a jumper wire harness, the solution of the present invention is safer, more convenient and easier to implement, and solves the problems that the existing jump-starting methods are not only complex but also have safety risks.

[0060] Embodiment 2

[0061] In the foregoing embodiment, the door unlocking actuator 16 is powered by the vehicle low-voltage power supply 11 through the vehicle domain controller 14. Even when an external charging gun or an external power source 2 is connected, it is only possible to charge the vehicle low-voltage power supply 11 first and then supply power by the vehicle low-voltage power supply 11. This method is relatively single and inflexible. Especially when the vehicle cannot be unlocked due to damage to the vehicle low-voltage power supply 11, it is impossible to perform jump-starting and unlocking. Therefore, in a preferred embodiment, a single-pole double-throw switch is provided between the charging auxiliary power supply interface 13, the vehicle low-voltage power supply 11, and the door unlocking actuator 16, and the vehicle domain controller 14 is communicatively connected to the single-pole double-throw switch to control the on / off of the connection between the charging auxiliary power supply interface 13, the vehicle low-voltage power supply 11, and the door unlocking actuator 16.

[0062] In the case of adopting the above embodiment, when connecting the charging gun or the external power source 2 to the charging auxiliary power supply interface 13, the vehicle domain controller 14 can choose to first control the single-pole double-throw switch to conduct with the vehicle low-voltage power supply 11 to charge the vehicle low-voltage power supply 11. If the door unlocking actuator 16 still cannot be started after charging for more than a preset time, then control the single-pole double-throw switch to connect with the door unlocking actuator 16, so that the external power source 2 directly supplies power to the door unlocking actuator 16 to open the vehicle door. Compared with Embodiment 1, the operation is more flexible and the success rate of external jump-starting is improved.

[0063] In addition, it is worth mentioning that in the above embodiment, a conditioning circuit is defaultly provided on the circuit between the charging auxiliary power supply interface 13 and the door unlocking actuator 16 to adjust the power of the charging gun or the external power source 2 to match the power required by the door unlocking actuator 16.

[0064] In addition, the present invention also provides a vehicle, including the power supply circuit 1 in any one of the above embodiments.

[0065] In addition, to solve the aforementioned existing problems, the present invention also provides a power supply wake-up method for a vehicle, and the power supply wake-up method includes:

[0066] S1. Obtain the voltage of the vehicle low-voltage power supply 11;

[0067] S2. Obtain the charging information of the charging main power supply interface 12;

[0068] S3. Determine whether the vehicle is in a state where it cannot be woken up based on the voltage of the vehicle low-voltage power supply 11 and the charging information of the charging main power supply interface 12;

[0069] S4. Selectively control the external power supply 2 to be connected to or disconnected from the vehicle low-voltage power supply 11 based on the judgment result.

[0070] In the above steps,

[0071] Step S2 further includes:

[0072] S21. Detect whether there is a charging voltage DC+ at the charging main power supply interface 12.

[0073] Step S3 further includes:

[0074] S31. Determine whether the vehicle low-voltage power supply 11 is power-fed based on the voltage of the vehicle low-voltage power supply 11;

[0075] S311. If the voltage of the low-voltage power supply is lower than the preset value, determine that it is power-fed;

[0076] S312. If the voltage of the low-voltage power supply is not lower than the preset value, determine that it is not power-fed;

[0077] S32. Determine whether the vehicle is in a charging state based on the charging information of the charging main power supply interface 12;

[0078] S321. If there is a charging voltage DC+, determine that the vehicle is in a charging state;

[0079] S322. If there is no charging voltage DC+, determine that the vehicle is not in a charging state;

[0080] S331. If the vehicle low-voltage power supply 11 is power-fed and the vehicle is not in a charging state, determine that the vehicle is in a state where it cannot be woken up;

[0081] S332. If the vehicle low-voltage power supply 11 is not power-fed or the vehicle is in a charging state, determine that the vehicle is in a state where it can be woken up.

[0082] Step S4 further includes:

[0083] S41. If the vehicle is in an unawakable state, control the external power supply 2 to be connected to the vehicle low-voltage power supply 11;

[0084] S42. If the vehicle is in an awakable state, control the external power supply 2 to be disconnected from the vehicle low-voltage power supply 11.

[0085] When the vehicle owner finds that the vehicle cannot be awakened, insert the positive and negative poles of the external power supply 2 into the positive and negative poles of the charging auxiliary power interface 13. After receiving the A+ signal of the external power supply 2, the vehicle domain controller 14 is awakened and starts to obtain the voltage of the vehicle low-voltage power supply 11 and determine whether the low-voltage power supply is feeding. If the voltage of the low-voltage power supply is lower than the preset value, it is judged to be feeding; if the voltage of the low-voltage power supply is not lower than the preset value, it is judged not to be feeding. At the same time, detect whether there is a charging voltage DC+ at the charging main power interface 12. If there is a charging voltage DC+, it is judged that the vehicle is in a charging state; if there is no charging voltage DC+, it is judged that the vehicle is not in a charging state. Combining the two judgment results, only when the vehicle low-voltage power supply 11 is feeding and the vehicle is not in a charging state, it is judged that the vehicle is in an unawakable state, and it is necessary to connect the external power supply 2 to the vehicle low-voltage power supply 11. If the vehicle low-voltage power supply 11 is not feeding or the vehicle is in a charging state, it is judged that the vehicle is in an awakable state, and there is no need to connect the external power supply 2 and the vehicle low-voltage power supply 11. Therefore, when the vehicle is in an unawakable state, control the external power supply 2 to be connected to the vehicle low-voltage power supply 11 to charge the vehicle low-voltage power supply 11. When the vehicle is in an awakable state, control the external power supply 2 to be disconnected from the vehicle low-voltage power supply 11, and the low-voltage power supply or the charging gun unlocks and supplies power to the vehicle.

[0086] Further, the power supply circuit 1 further includes a charging signal interface 15. The charging signal interface 15 is communicatively connected to the vehicle domain controller 14. Correspondingly, a charging signal plug is provided on the charging gun. When the charging gun is inserted into the vehicle charging socket 17 for charging, the charging signal plug can be inserted into the charging signal interface 15 and send a CC2 signal to the vehicle domain controller 14. Step S2 further includes:

[0087] S22. Obtain the charging information of the charging signal interface 15;

[0088] S23. Judge the charging information of the charging main power interface 12 based on the charging information of the charging signal interface 15;

[0089] S241. When it is detected that there is a charging signal CC2 at the charging signal interface 15, judge that the vehicle is in a charging state;

[0090] S242. When it is not detected that there is a charging signal CC2 at the charging signal interface 15, judge that the vehicle is in a non-charging state.

[0091] In this embodiment, a new method for determining whether a vehicle is in a charging state is proposed. Compared with the method of detecting the charging voltage DC+ mentioned above, the determination method in this embodiment can achieve the same effect, and at the same time, it is safer and more reliable to separately arrange the signal detection circuit and the positive pole of the charging voltage circuit.

[0092] Although it was mentioned above that the vehicle domain controller 14 can control whether to charge the vehicle low-voltage power supply 11 by controlling the on-off of the external power supply 2 and the vehicle low-voltage power supply 11, this method is relatively single and inflexible. Especially when the vehicle cannot be unlocked due to damage to the vehicle low-voltage power supply 11, it is impossible to perform jump-start unlocking. Therefore, this embodiment is proposed.

[0093] In a preferred embodiment, the vehicle further includes an unlocking actuator 16. The unlocking actuator 16 is communicatively connected to the vehicle domain controller 14. A single-pole double-throw switch is provided between the charging auxiliary power supply interface 13, the vehicle low-voltage power supply 11, and the unlocking actuator 16. The vehicle domain controller 14 is communicatively connected to the single-pole double-throw switch to control the on-off of the connection between the charging auxiliary power supply interface 13, the vehicle low-voltage power supply 11, and the unlocking actuator 16. The unlocking actuator 16 includes a door unlocking actuator 16 and / or an engine hood unlocking actuator 16 and / or a trunk lid unlocking actuator 16. Step S4 further includes:

[0094] S43. Control the single-pole double-throw switch to conduct the charging auxiliary power supply interface 13 and the vehicle low-voltage power supply 11; or,

[0095] S44. Control the single-pole double-throw switch to conduct the charging auxiliary power supply interface 13 and the unlocking actuator 16;

[0096] S45. Control the door unlocking actuator 16 and / or the engine hood unlocking actuator 16 and / or the trunk lid unlocking actuator 16 to unlock.

[0097] In the case of adopting this embodiment, when the charging gun or the external power supply 2 is connected to the charging auxiliary power supply interface 13, the vehicle domain controller 14 can choose to first control the single-pole double-throw switch to conduct with the vehicle low-voltage power supply 11 to charge the vehicle low-voltage power supply 11. If it is found that the door unlocking actuator 16 still cannot be started, then control the single-pole double-throw switch to connect with the door unlocking actuator 16, so that the external power supply 2 directly supplies power to the door unlocking actuator 16 to open the door. Compared with the first embodiment, the operation is more flexible and the success rate of external jump-starting is improved.

[0098] It should be noted that the above embodiments are only used to illustrate the principle of the present invention and are not intended to limit the protection scope of the present invention. Without departing from the principle of the present invention, those skilled in the art can adjust the above structure so that the present invention can be applied to more specific application scenarios.

[0099] Those skilled in the art can understand that the above-mentioned vehicle and the power supply circuit 1 for the vehicle also include some other well-known structures, such as processors, controllers, memories, etc., wherein the memories include but are not limited to random access memory, flash memory, read-only memory, programmable read-only memory, volatile memory, non-volatile memory, serial memory, parallel memory or registers, etc., and the processors include but are not limited to CPLD / FPGA, DSP, ARM processor, MIPS processor, etc. In order to unnecessarily obscure the embodiments of the present disclosure, these well-known structures are not shown in the drawings.

[0100] Although the various steps in the above embodiment are described in the above order, those skilled in the art can understand that in order to achieve the effect of this embodiment, different steps do not have to be executed in such an order. They can be executed simultaneously (in parallel) or in a reverse order. For example, the execution order of steps S1 and S2 can be irrelevant. These simple changes are within the protection scope of the present invention.

[0101] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A power supply wake-up method for a vehicle, characterized in that, the power supply wake-up method includes: obtaining the voltage of the vehicle's low-voltage power supply; obtaining the charging information of the charging main power supply interface; judging whether the vehicle is in an un-wakeable state based on the voltage of the vehicle's low-voltage power supply and the charging information of the charging main power supply interface; selectively controlling the connection or disconnection of the external power supply and the vehicle's low-voltage power supply based on the judgment result.

2. The power supply wake-up method according to claim 1, wherein The step of "judging whether the vehicle is in an un-wakeable state based on the voltage of the vehicle's low-voltage power supply and the charging information of the charging main power supply interface" further includes: judging whether the vehicle's low-voltage power supply is power-fed based on the voltage of the vehicle's low-voltage power supply; judging whether the vehicle is in a charging state based on the charging information of the charging main power supply interface; if the vehicle's low-voltage power supply is power-fed and the vehicle is not in a charging state, then judge that the vehicle is in an un-wakeable state.

3. The power supply wake-up method according to claim 2, characterized in that, The step of "selectively controlling the connection or disconnection of the external power supply and the vehicle's low-voltage power supply based on the judgment result" further includes: when the vehicle's low-voltage power supply is power-fed and the vehicle is in an uncharged state, controlling the connection of the external power supply and the vehicle's low-voltage power supply.

4. The power supply wake-up method according to claim 3, wherein The step of "selectively controlling the connection or disconnection of the external power supply and the vehicle's low-voltage power supply based on the judgment result" further includes: when the vehicle's low-voltage power supply is not power-fed and the vehicle is in an uncharged state, controlling the disconnection of the external power supply and the vehicle's low-voltage power supply.

5. The power supply wake-up method according to claim 2, characterized in that The step of "selectively controlling the connection or disconnection of the external power supply and the vehicle's low-voltage power supply based on the judgment result" further includes: controlling a switch to conduct the charging auxiliary power supply interface and the vehicle's low-voltage power supply; controlling the door unlock actuator and / or the engine hood unlock actuator and / or the trunk lid unlock actuator to unlock.

6. The power supply wake-up method according to claim 2, wherein The step of "selectively controlling the connection or disconnection of the external power supply and the vehicle's low-voltage power supply based on the judgment result" further includes: controlling a switch to conduct the charging auxiliary power supply interface and the unlock actuator; controlling the door unlock actuator and / or the engine hood unlock actuator and / or the trunk lid unlock actuator to unlock.

7. The power supply wake-up method according to any one of claims 2-6, characterized in that The method of "obtaining the charging information of the charging main power supply interface" further includes: obtaining the charging information of the charging signal interface; judging the charging information of the charging main power supply interface based on the charging information of the charging signal interface; judging that the vehicle is in a charging state when a charging signal is detected at the charging signal interface; judging that the vehicle is in an uncharged state when no charging signal is detected at the charging signal interface.

8. A readable storage medium, in which multiple program codes are stored, characterized in that, The program code is suitable for being loaded and run by a processor to execute the power supply wake-up method described in any one of claims 1 to 7.

9. A controller capable of running a computer program, characterized in that, When the controller executes the computer program, it implements the power supply wake-up method described in any one of claims 1 to 7.

10. A power supply circuit for a vehicle, characterized in that, The power supply circuit includes: a vehicle high-voltage power supply for powering the vehicle when driving the vehicle; a vehicle low-voltage power supply for powering the vehicle when waking up the vehicle; a charging auxiliary power supply interface, and the charging auxiliary power supply interface is connected to the vehicle's low-voltage power supply; a charging main power supply interface, and the charging main power supply interface is connected to the vehicle's high-voltage power supply; a vehicle domain controller, which is communicatively connected to the vehicle's high-voltage power supply, the vehicle's low-voltage power supply, the charging main power supply interface, and the charging auxiliary power supply interface; The power supply circuit can execute the power supply wake-up method described in any one of claims 1 to 4.

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