Power supply control circuit, control method and automobile

Abstract

The application provides a power supply control circuit, a control method and an automobile. The power supply control circuit at least comprises a trigger circuit, a switching circuit, a self-locking circuit, a fast starting circuit, a first control circuit and a second control circuit. In the shutdown state, when the first control circuit receives an upgrade instruction, the self-locking circuit enables the switching circuit to be turned on, so that the first control circuit is turned on, thereby realizing system upgrade after the engine is turned off. In the sleep state, the switching circuit in the on state detects the enable signal of the trigger circuit, the first control circuit sends the enable signal to the fast starting circuit, and the fast starting circuit controls the second control circuit to be turned on, so that the load unit enters the normal working state, thereby realizing the fast starting of the second ignition within the preset time. The method realizes that the vehicle machine is completely turned off in the shutdown state, the static current reaches 0 mA, and supports system upgrade after the automobile is turned off and fast starting of the second ignition within the preset time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile electronic circuit, in particular to a power supply control circuit, a control method and an automobile. BACKGROUND

[0002] In the technical field of automobile electronic circuit, if the static current, i.e. the sleep current when the automobile is not working, is too high, it is easy to cause the battery to run out and shorten the service life of the battery. If the automobile is parked for a long time without starting, the battery will continue to run out due to the static current, and when starting again, it is not only easy to fail to start, but also causes damage to the battery, resulting in a lower and lower battery capacity. Therefore, in the technical field of automobile electronic circuit, the requirement for static current is becoming more and more strict, i.e. the lower the static current is, the better.

[0003] In the prior art, after the automobile is turned off, a large number of electronic components in the automobile are in a sleep state without meeting the working conditions, and the MCU is awakened again when the electronic components need to work. Since the sleep state of the MCU is not complete shutdown, it will cause the existence of static current to continuously consume the battery power. In addition, the prior art cannot support system upgrading after the automobile is turned off and second starting for quick start within a certain preset time. SUMMARY

[0004] In view of the above technical problems, the present application provides a power supply control circuit, a control method and an automobile. By setting a self-locking circuit connected with the switching circuit and the first control circuit, in the shutdown state, the self-locking circuit sends an enable to the switching circuit to keep it in a conducting state, and the power supply continuously supplies power to the first control circuit to complete the execution of the upgrade instruction, thereby realizing system upgrading after the automobile is turned off. By setting a quick start circuit connected with the first control circuit and the second control circuit, in the sleep state, if the switching circuit detects an enable signal of the trigger circuit, the first control circuit sends an enable signal to the quick start circuit, and the quick start circuit controls the second control circuit to make it conductive, thereby making the load unit quickly enter the normal working state, realizing second starting for quick start after the automobile is turned off. And in the working state or sleep state, after a period of time without external trigger enable, the first control circuit sends an enable signal to the self-locking circuit, and the self-locking circuit controls the switching circuit to make it disconnected, entering the shutdown state, thereby realizing complete shutdown of the system when there is no external trigger enable for a period of time, and the static current reaches 0mA.

[0005] Specifically, the present application provides a power supply control circuit, which at least comprises: a trigger circuit, a switching circuit, a self-locking circuit, a quick start circuit, a first control circuit and a second control circuit.

[0006] The first control circuit is connected with the self-locking circuit, the switching circuit, the quick start circuit and the second control circuit respectively.

[0007] The switch circuit is connected with the trigger circuit and the self-locking circuit respectively;

[0008] The fast starting circuit is connected with the second control circuit;

[0009] In the shutdown state, when the first control circuit receives the upgrade instruction, the self-locking circuit enables the switch circuit to be turned on, so that the first control circuit is turned on;

[0010] In the working state or the sleep state, the switch circuit and the first control circuit remain to be turned on, and when the switch circuit continuously fails to receive the enable signal of the trigger circuit, the first control circuit sends an enable signal to the self-locking circuit, and the self-locking circuit controls the switch circuit to be turned off after a preset time, so as to enter the shutdown state.

[0011] In the shutdown state, when the first control circuit receives the upgrade instruction, the self-locking circuit outputs an enable signal to make the switch circuit remain to be turned on; in the working state or the sleep state, when the switch circuit continuously fails to receive the enable signal sent by the trigger circuit, the first control circuit sends an enable signal to the self-locking circuit, so that the self-locking circuit controls the switch circuit to be turned off after a preset time, so as to enter the shutdown state, thereby realizing the completion of the upgrade instruction after the engine is turned off, and making the system completely shut down when there is no external trigger enable in the working state or the sleep state.

[0012] Further, when the first control circuit receives the upgrade instruction, the self-locking circuit enables the switch circuit to be turned on, so that the first control circuit is turned on, and the method further comprises:

[0013] When the first control circuit executes the upgrade instruction or enters the turned-on state for a preset time, the first control circuit sends an enable signal to the self-locking circuit, and the self-locking circuit controls the switch circuit to be turned off, so as to enter the shutdown state.

[0014] Further, in the shutdown state, when the switch circuit detects the enable signal of the trigger circuit, the switch circuit switches to the turned-on state and sends an enable signal to the first control circuit, and the first control circuit controls the second control circuit to be turned on.

[0015] Further, in the sleep state, the switch circuit and the first control circuit remain to be turned on, and when the switch circuit detects the enable signal of the trigger circuit, the first control circuit sends an enable signal to the fast starting circuit, and the fast starting circuit controls the second control circuit to be turned on.

[0016] Optionally, the power supply control circuit further comprises an electric quantity detection circuit, which is connected with the switch circuit and the first control circuit respectively; the electric quantity detection circuit is used for detecting the electric quantity of the power supply at the end of the switch circuit.

[0017] Optionally, the second control circuit is connected with a plurality of load units, and is used for controlling the load units to enter a working state, a sleep state or a shutdown state.

[0018] To solve the above technical problems, the application further provides a power supply control method, which comprises the following steps:

[0019] In the shutdown state, when the first control circuit receives an upgrade instruction, the self-locking circuit enables the switch circuit to be turned on, so as to make the first control circuit be turned on.

[0020] When the first control circuit executes the upgrade instruction or enters the turned-on state for a preset time, the first control circuit sends an enabling signal to the self-locking circuit, and the self-locking circuit controls the switch circuit to be turned off, so as to return to the shutdown state.

[0021] The self-locking circuit enables the switch circuit to be kept in the turned-on state, so that the system upgrade is realized after the automobile is turned off. When the first control circuit executes the upgrade instruction or enters the turned-on state for a preset time, the first control circuit sends an enabling signal to the self-locking circuit, so that the switch circuit is switched to the power-off state, and the system enters the shutdown state. When the system enters the shutdown state, the static current of the automobile is 0 mA. Through the method, the system is completely turned off after the system upgrade is completed after the automobile is turned off, and the battery is prevented from being continuously discharged.

[0022] To solve the above technical problems, the application further provides another power supply control method, which comprises the following steps:

[0023] In the working state or the sleep state, the switch circuit and the first control circuit are kept in the turned-on state, when the switch circuit does not continuously receive the enabling signal of the trigger circuit, the first control circuit sends an enabling signal to the self-locking circuit, and the self-locking circuit controls the switch circuit to be turned off after a preset time, so as to enter the shutdown state.

[0024] In the shutdown state, when the switch circuit detects the enabling signal of the trigger circuit, the switch circuit is switched to the turned-on state, and sends an enabling signal to the first control circuit, and the first control circuit controls the second control circuit to be turned on, so that the load units enter the working state.

[0025] When the switch circuit continuously does not receive the enable signal of the trigger circuit, the first control circuit sends an enable signal to the self-locking circuit to control the switch circuit to be turned off after a preset time, and the system enters an off state. When starting again, the system enters a working state from the off state. After entering the off state, the system is completely turned off, and the static current is 0 mA. Through the method, the technical problem that the car is still in a sleep state for a long time after being turned off and the battery is continuously discharged to cause the next starting point to not be ignited is effectively solved.

[0026] To solve the above technical problems, the application further provides another power supply control method, which comprises the following steps:

[0027] In the sleep state, the switch circuit and the first control circuit remain turned on. When the switch circuit detects the enable signal of the trigger circuit, the first control circuit sends an enable signal to the fast starting circuit, the fast starting circuit controls the second control circuit to be turned on, and the load unit enters a working state.

[0028] In the sleep state, if starting again is needed, the first control circuit sends an enable signal to the fast starting circuit, the fast starting circuit controls the second control circuit to be turned on, and the load starts to work. The method realizes fast starting of the second ignition within a preset time after the car is turned off.

[0029] To solve the above technical problems, the application further provides a car, which is provided with a plurality of load units, and the load units are controlled by the power supply control circuit as described in any of the above.

[0030] Compared with the prior art, the application has the beneficial effects that:

[0031] In the power supply control circuit provided by the application, the self-locking circuit connected with the switch circuit and the first control circuit is designed. In the off state, the self-locking circuit is enabled to keep the switch circuit in a turned-on state, and the power supply continuously supplies power to the first control circuit to complete the execution of the upgrade instruction, so that the system of the car is upgraded after being turned off.

[0032] In the power supply control circuit provided by the application, the fast starting circuit connected with the first control circuit and the second control circuit is designed. In the sleep state, the switch circuit and the first control circuit remain turned on. If the switch circuit detects the enable signal of the trigger circuit, the first control circuit sends an enable signal to the fast starting circuit, the fast starting circuit controls the second control circuit to be turned on, the load unit enters a working state, and fast starting of the second ignition within a preset time after the car is turned off is realized.

[0033] In the power supply control method provided in the application, when the switch circuit continuously does not receive the enable signal of the trigger circuit, the first control circuit sends the enable signal to the self-locking circuit to control the switch circuit to be turned off after a preset time, and the system enters the shutdown state. When starting again, the system enters the working state from the shutdown state. After entering the shutdown state, the system is completely shut down, and the static current is 0 mA. Through the method, the technical problems of high static current of the automobile, continuous power loss of the automobile battery, slow starting speed when starting again, and failure to start are effectively solved. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 FIG. 1 is a structural schematic diagram of a power supply control circuit provided in an embodiment of the application.

[0035] Figure 2 FIG. 2 is a method flowchart of a power supply control method provided in an embodiment of the application.

[0036] Figure 3 FIG. 3 is a method flowchart of another power supply control method provided in an embodiment of the application.

[0037] Figure 4 FIG. 4 is a method flowchart of another power supply control method provided in an embodiment of the application. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the application.

[0039] Reference Figure 1 FIG. 1 is a structural schematic diagram of a power supply control circuit provided in an embodiment of the application.

[0040] The application provides a power supply control circuit, which at least includes a trigger circuit, a switch circuit, a self-locking circuit, a fast starting circuit, a first control circuit and a second control circuit.

[0041] The first control circuit is connected with the self-locking circuit, the switch circuit, the fast starting circuit and the second control circuit respectively.

[0042] The switch circuit is connected with the trigger circuit and the self-locking circuit respectively.

[0043] The fast starting circuit is connected with the second control circuit.

[0044] When the first control circuit receives an upgrade instruction in the shutdown state, the self-locking circuit enables the switch circuit to be turned on, so as to turn on the first control circuit.

[0045] In the working state or the sleep state, the switch circuit and the first control circuit remain to be turned on, and when the switch circuit continuously does not receive the enable signal of the trigger circuit, the first control circuit sends an enable signal to the self-locking circuit, and the self-locking circuit controls the switch circuit to be turned off after a preset time, so as to enter the shutdown state.

[0046] In the shutdown state, when the first control circuit receives an upgrade instruction, the self-locking circuit outputs an enable signal to make the switch circuit remain to be turned on; in the working state or the sleep state, when the switch circuit continuously does not receive the enable signal sent by the trigger circuit, the first control circuit sends an enable signal to the self-locking circuit, so that the self-locking circuit controls the switch circuit to be turned off after a preset time, so as to enter the shutdown state, thereby realizing that the upgrade instruction is completed after the engine is turned off, and the system is completely turned off when there is no external trigger enable in the working state or the sleep state.

[0047] Further, when the first control circuit receives an upgrade instruction, the self-locking circuit enables the switch circuit to be turned on, so as to turn on the first control circuit, and the method further comprises the following steps of:

[0048] When the first control circuit executes the upgrade instruction or enters the turned-on state for a preset time, the first control circuit sends an enable signal to the self-locking circuit, and the self-locking circuit controls the switch circuit to be turned off, so as to enter the shutdown state.

[0049] Further, in the shutdown state, when the switch circuit detects the enable signal of the trigger circuit, the switch circuit switches to the turned-on state and sends an enable signal to the first control circuit, and the first control circuit controls the second control circuit to be turned on.

[0050] Further, in the sleep state, the switch circuit and the first control circuit remain to be turned on, and when the switch circuit detects the enable signal of the trigger circuit, the first control circuit sends an enable signal to the fast start circuit, and the fast start circuit controls the second control circuit to be turned on.

[0051] Optionally, the power supply control circuit further comprises a power detection circuit, which is connected with the switch circuit and the first control circuit respectively; the power detection circuit is used for detecting the power of the switch circuit.

[0052] Optionally, the second control circuit is connected with a plurality of load units, and the second control circuit is configured to control the load units to enter an active state, a sleep state or a shutdown state.

[0053] In the embodiments of the present application, the load units controlled by the power control circuit are mainly automotive electronic components, including but not limited to entertainment systems, instruments, ECUs, etc.

[0054] Preferably, the power control circuit comprises a battery connected with the switching circuit, configured to provide power supply for the power control circuit.

[0055] Preferably, in some embodiments, the second control circuit is mainly loaded with a more efficient chip than the chip loaded on the first control circuit, such as a SOC chip.

[0056] Preferably, in some embodiments, the first control circuit is loaded with an MCU chip, and the second control circuit is loaded with a SOC chip.

[0057] Preferably, the fast start circuit is a low-power supply circuit for controlling SOC to enter and exit.

[0058] Reference Figure 2 is a method flowchart of a power control method provided by the embodiments of the present application. The power control method comprises the following steps:

[0059] In the shutdown state, when the first control circuit receives an upgrade instruction, the self-locking circuit enables the switching circuit to be turned on, so as to make the first control circuit be turned on.

[0060] When the first control circuit executes the upgrade instruction or enters the turned-on state for a preset time, the first control circuit sends an enable signal to the self-locking circuit, and the self-locking circuit controls the switching circuit to be turned off, so as to return to the shutdown state.

[0061] The self-locking circuit enables the switching circuit to be kept in the turned-on state, so as to realize system upgrade after the automobile is turned off. When the first control circuit executes the upgrade instruction or enters the turned-on state for a preset time, the first control circuit sends an enable signal to the self-locking circuit, so that the switching circuit is switched to the power-off state, and the system enters the shutdown state. When the system enters the shutdown state, the static current of the automobile is 0 mA. Through the method, the system is completely turned off after the system upgrade is completed after the automobile is turned off, and the battery is prevented from continuously being discharged.

[0062] In some embodiments, preferably, the upgrade instruction includes, but is not limited to, an automobile OTA (Over the air) upgrade instruction, and the process of executing the OTA upgrade instruction includes downloading an upgrade package from the cloud and installing it to the vehicle system or a specified application. The upgraded content includes a part of the application of the automobile and the entire vehicle system.

[0063] In some embodiments, optionally, the upgrade instruction can also be an OTA repair instruction, and the process of executing the OTA repair instruction includes downloading a repair package or a repair patch from the cloud and installing it to the specified application.

[0064] In some embodiments, optionally, the upgrade instruction can also be an OTA new software installation instruction, and the process of executing the OTA new software installation instruction includes downloading a new software installation package from the cloud and installing it to the vehicle system.

[0065] Optionally, in some embodiments, the preset time includes, but is not limited to, 120 hours.

[0066] Preferably, in an embodiment, an MCU chip is loaded on the first control circuit, and an SOC chip is loaded on the second control circuit. After the automobile is turned off and the user leaves, the MCU chip receives an automobile OTA upgrade instruction, the self-locking circuit sends an enable signal to the switching circuit, the switching circuit switches to a power-on state to supply power to the first control circuit. At this time, the process of executing the OTA upgrade instruction on the MCU is performed, and after the execution of the OTA upgrade instruction is completed, that is, after the cloud download and local installation of the upgrade package are completed, if the system is in the state of being turned off for 120 hours at this time, the first control circuit sends an enable signal to the self-locking circuit, and the switching circuit switches to a power-off state, and the system enters a shutdown state.

[0067] Referring to Figure 3 is a method flowchart of another power control method provided by the embodiment of the application. The power control method provided in the embodiment of the application includes the following steps:

[0068] In the working state or the sleep state, the switching circuit and the first control circuit remain in the on state, and when the switching circuit continuously does not receive the enable signal of the trigger circuit, the first control circuit sends an enable signal to the self-locking circuit, and the self-locking circuit controls the switching circuit to be turned off after a preset time to enter a shutdown state.

[0069] In the shutdown state, when the switching circuit detects the enable signal of the trigger circuit, the switching circuit switches to the on state and sends an enable signal to the first control circuit, and the first control circuit controls the second control circuit to be turned on, and the load unit enters the working state.

[0070] When the switch circuit continuously does not receive the enable signal of the trigger circuit, the first control circuit sends the enable signal to the self-locking circuit to make the self-locking circuit control the switch circuit to be turned off after a preset time, and the system enters the shutdown state. When starting again, the system enters the working state from the shutdown state. After entering the shutdown state, the system is completely turned off, and the static current is 0 mA. Through the method, the technical problem that the car is still in the sleep state for a long time after the engine is turned off, and the battery is continuously discharged to cause the next starting point to be not ignited is effectively solved.

[0071] The preset time refers to a time period after the car is turned off. The method for realizing the preset time includes but is not limited to loading an MCU on the first control circuit and utilizing the function of the programmable timer on the MCU to achieve the preset time, and then the self-locking circuit sends the enable signal to make the switch circuit be turned off.

[0072] Optionally, in some embodiments, the preset time includes but is not limited to 120 hours.

[0073] Preferably, in an embodiment, an MCU chip is loaded on the first control circuit, and an SOC chip is loaded on the second control circuit. In the working state or the sleep state, the switch circuit and the first control circuit loaded with the MCU chip are kept turned on. When the switch circuit continuously does not receive the enable signal of the trigger circuit, the first control circuit loaded with the MCU chip sends the enable signal to the self-locking circuit, the self-locking circuit controls the switch circuit to be turned off after 120 hours to enter the shutdown state; in the shutdown state, when the switch circuit detects the enable signal of the trigger circuit, the switch circuit is switched to the turned-on state, and the enable signal is sent to the first control circuit loaded with the MCU chip, the first control circuit loaded with the MCU chip controls the second control circuit loaded with the SOC chip to be turned on, and the load unit enters the working state.

[0074] Reference Figure 4 It is another power supply control method provided by the embodiment of the application, and a method flowchart of the power supply control method is shown in FIG. 2. The method of the power supply control method includes the following steps.

[0075] In the sleep state, the switch circuit and the first control circuit are kept turned on. When the switch circuit detects the enable signal of the trigger circuit, the first control circuit sends the enable signal to the fast starting circuit, the fast starting circuit controls the second control circuit to be turned on, and the load unit enters the working state.

[0076] In the sleep state, if the starting is needed again, the first control circuit sends the enable signal to the fast starting circuit, the fast starting circuit controls the second control circuit to be turned on, and the load starts to work. The method realizes the fast starting of the second starting in a preset time after the engine is turned off.

[0077] Optionally, in the sleep state, the switch circuit and the first control circuit are kept on, if the system is in a preset time after the engine is turned off, the switch circuit still does not detect the enable signal of the trigger circuit, the first control circuit sends the enable signal to the self-locking circuit, and the switch circuit is switched to the power-off state, and the system enters the shutdown state.

[0078] Optionally, in some embodiments, the preset time includes but is not limited to 120 hours.

[0079] Preferably, in an embodiment, the MCU chip is loaded on the first control circuit, and the SOC chip is loaded on the second control circuit. In the sleep state, the switch circuit and the first control circuit are kept on, when the switch circuit detects the starting or ACC enable signal of the trigger circuit, the first control circuit loaded with the MCU chip sends the enable signal to the fast starting circuit, and the second control circuit loaded with the SOC chip is turned on by the fast starting circuit, and the load unit enters the working state.

[0080] The embodiment of the application also provides a car, wherein the car is loaded with a plurality of load units, and the load units are controlled by the power supply control circuit as described in any of the above.

[0081] It should be understood that the above example embodiments are only exemplary, and are not intended to limit the scope of the application. Those of ordinary skill in the art can make various changes and modifications without departing from the scope and spirit of the application. All these changes and modifications are intended to be included in the scope of the application claimed by the appended claims.

[0082] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized in electronic hardware, or in combination of computer software and electronic hardware. Whether the functions are realized in hardware or software mode depends on the specific application and design constraints of the technical solution. Those of ordinary skill in the art can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the application.

[0083] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other manners. For example, the embodiments of the device described above are merely schematic. For example, the division of the units is only a logical function division. There can be another division manner for the actual implementation. For example, a plurality of units or components can be combined or integrated into another device, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings between different units, or the displayed or discussed direct couplings between different units, can be implemented by using some interfaces. The indirect couplings or direct couplings can be implemented in electronic, mechanical or other forms.

[0084] It should be noted that, in the present document, the terms such as first and second are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of additional identical elements in the process, method, article or device including the element.

[0085] The above-described specific embodiments further illustrate the purposes, technical solutions and beneficial effects of the present application. It should be understood that the above-described specific embodiments are merely specific embodiments of the present application, and are not intended to limit the protection scope of the present application. It is particularly pointed out that any modification, equivalent replacement, improvement, etc. made by those skilled in the art within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A power control circuit, characterized by comprising: At least comprising: trigger circuit, switch circuit, self-locking circuit, fast start circuit, first control circuit and second control circuit; The first control circuit is connected with the self-locking circuit, switch circuit, fast start circuit and second control circuit respectively; The switch circuit is connected with the trigger circuit and self-locking circuit respectively; The fast start circuit is connected with the second control circuit; In the shutdown state, when the first control circuit receives an upgrade instruction, the self-locking circuit enables the switch circuit to be turned on, so that the first control circuit is turned on; In the working state or sleep state, the switch circuit and the first control circuit remain turned on, and when the switch circuit continuously does not receive the enable signal of the trigger circuit, the first control circuit sends an enable signal to the self-locking circuit, and the self-locking circuit controls the switch circuit to be turned off after a preset time, so as to enter the shutdown state; In the first control circuit, when the first control circuit receives an upgrade instruction, the self-locking circuit enables the switch circuit to be turned on, so that the first control circuit is turned on, and the first control circuit sends an enable signal to the self-locking circuit, and the self-locking circuit controls the switch circuit to be turned off, so as to enter the shutdown state; In the shutdown state, when the switch circuit detects the enable signal of the trigger circuit, the switch circuit switches to the on state and sends an enable signal to the first control circuit, and the first control circuit controls the second control circuit to be turned on; In the sleep state, the switch circuit and the first control circuit remain turned on, and when the switch circuit detects the enable signal of the trigger circuit, the first control circuit sends an enable signal to the fast start circuit, and the fast start circuit controls the second control circuit to be turned on. Further comprising:

2. A power control circuit according to claim 1, wherein The power detection circuit is connected with the switch circuit and the first control circuit respectively, and the power detection circuit is used for detecting the power of the power supply at the switch circuit end. The second control circuit end is connected with a plurality of load units, and the second control circuit is used for controlling the load units to enter the working state, sleep state or shutdown state.

3. A power control circuit according to claim 1, wherein 4. A control method of the power supply control circuit according to any one of claims 1-3, comprising: In the shutdown state, when the first control circuit receives an upgrade instruction, the self-locking circuit enables the switch circuit to be turned on, so that the first control circuit is turned on; In the first control circuit, when the first control circuit executes the upgrade instruction, or enters the on state for a preset time, the first control circuit sends an enable signal to the self-locking circuit, and the self-locking circuit controls the switch circuit to be turned off, so as to restore to the shutdown state.

5. A control method of the power supply control circuit according to any one of claims 1-3, comprising: ​ In the working state or sleep state, the switch circuit and the first control circuit remain conducting, when the switch circuit continuously does not receive the enable signal of the trigger circuit, the first control circuit sends the enable signal to the self-locking circuit, the self-locking circuit controls the switch circuit to be disconnected after a preset time, to enter the shutdown state; In the shutdown state, when the switch circuit detects the enable signal of the trigger circuit, the switch circuit switches to the conducting state and sends the enable signal to the first control circuit, the first control circuit controls the second control circuit to be conducting, and the load unit enters the working state.

6. A control method of the power supply control circuit according to any one of claims 1-3, comprising: In the sleep state, the switch circuit and the first control circuit remain conducting, when the switch circuit detects the enable signal of the trigger circuit, the first control circuit sends the enable signal to the fast start circuit, the fast start circuit controls the second control circuit to be conducting, and the load unit enters the working state.

7. An automobile characterized by comprising: The automobile end loads a variety of load units, and the load units are controlled by the power supply control circuit according to any one of claims 1-3.

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