A power switch control circuit, vehicle power-on management system and vehicle

Abstract

The utility model provides a power switch control circuit, a vehicle power-on management system and a car, and belongs to the field of electronic circuit technology. The scheme includes: when a user needs to use a device that uses a power switch control circuit, the controller needs to be awakened. After the controller is awakened, the first interface of the controller outputs current, and the output current enters the magnetic induction coil. The magnetic induction coil generates an induced magnetic field. Under the action of the induced magnetic field, the first contact and the second contact of the magnetic induction switch of the electromagnetic power main switch are attracted to form a path between the battery and the load, and the battery provides working current to the load through the magnetic induction switch. When the user stops using the device that uses the power switch control circuit, the controller needs to be controlled to power off. After the controller is powered off, the first interface stops outputting current. At this time, the magnetic field generated by the magnetic induction coil disappears, the magnetic induction switch is reset, and the first contact and the second contact are disconnected, so that the battery is automatically powered off.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic circuits, and in particular to a power switch control circuit and a vehicle power-on management system. Background Art

[0002] At present, the low-voltage batteries of heavy trucks are equipped with a power-off switch, the main function of which is to manually shut down the battery to reduce the power consumption of the low-voltage battery after the vehicle is powered off. However, this solution has a major defect and cannot ensure that all passengers on the vehicle will actively shut down when getting off the vehicle.

[0003] At present, there are two main types of battery disconnect switches for commercial vehicles and heavy trucks, one of which is Figure 1 As shown, Figure 1 The example shown is a schematic diagram of a manual power switch. A main power switch is directly connected in series between the positive terminal of the battery and the fuse box bracket, and the power supply of the battery is manually disconnected through the main power switch. Figure 2 As shown, the difference is that the manual switch is replaced with an electromagnetic power main switch. The so-called electromagnetic power main switch is a relay with relatively high power. By manually closing the micro switch ①, the coil ② of the electromagnetic power main switch is energized, and after the coil is energized, the switch ③ is attracted, and the battery supplies power to the chassis fuse box.

[0004] Figure 1 The main power switch of the solution is located at the low-voltage battery. When passengers get on and off the car, they need to walk to the low-voltage battery and manually turn on the main power switch. First, the switch location is not convenient enough. Second, most car owners cannot guarantee to turn off the switch every time they get off the car.

[0005] Figure 2 Comparison of solutions Figure 1 The solution solves the defect of the inconvenient switch location. The operating switch can be moved from the location of the low-voltage battery to the cab, but it still cannot guarantee that most car owners will turn off the switch when getting off the car. Utility Model Content

[0006] In view of this, the embodiments of the present utility model provide a power switch control circuit, a vehicle power-on management system and a vehicle to achieve.

[0007] To achieve the above purpose, the present invention provides the following technical solutions:

[0008] A power switch control circuit, comprising:

[0009] Batteries;

[0010] An electromagnetic power main switch, wherein a first contact of a magnetic induction switch of the electromagnetic power main switch is connected to a current output interface of the battery, and a second contact of the magnetic induction switch of the electromagnetic power main switch is connected to a load;

[0011] A controller, wherein the first interface of the controller is connected to the first end of the magnetic induction coil of the electromagnetic power main switch, the second end of the magnetic induction coil of the electromagnetic power main switch is grounded, the first interface is used to output current after the controller is awakened, and the first interface is also used to stop outputting current after the controller obtains a power-off request.

[0012] Optionally, the power switch control circuit further includes:

[0013] A manual switch, wherein a first end of the manual switch is connected to a first end of the magnetic induction coil, and a second end of the manual switch is connected to an external power supply.

[0014] Optionally, the power switch control circuit further includes:

[0015] a first diode and a second diode;

[0016] The first diode is arranged between the first interface of the controller and the first end of the magnetic induction coil of the electromagnetic power main switch;

[0017] The second diode is arranged between the first end of the manual switch and the first end of the magnetic induction coil of the electromagnetic power main switch.

[0018] Optionally, the power switch control circuit further includes:

[0019] A display is connected to a second interface of the controller, and the second interface is used for a voltage signal representing a switch state of the electromagnetic power main switch.

[0020] Optionally, in the above-mentioned power switch control circuit, the magnetic induction coil is provided with N taps, wherein N is a positive integer not less than 2, and one of the taps is connected to the first interface as the first end of the magnetic induction coil.

[0021] Optionally, the power switch control circuit further includes:

[0022] An adjustable resistor is arranged between the first end of the magnetic induction coil and the first interface.

[0023] Optionally, in the above power switch control circuit, the controller is a body controller, and the load is a chassis fuse box.

[0024] A power switch control circuit, comprising:

[0025] Batteries;

[0026] An electromagnetic power main switch, wherein a first contact of a magnetic induction switch of the electromagnetic power main switch is connected to a current output interface of the battery, and a second contact of the magnetic induction switch of the electromagnetic power main switch is connected to a load;

[0027] A controller, wherein the first interface of the controller is connected to the first end of the magnetic induction coil of the electromagnetic power main switch, the second end of the magnetic induction coil of the electromagnetic power main switch is connected to the current output interface of the battery, the first interface is used to control the first interface to be grounded after the controller is awakened, and the first interface is also used to control the first interface to be suspended after the controller obtains a power-off request.

[0028] A vehicle power-on management system comprises any one of the power switch control circuits described above.

[0029] A car comprises the above-mentioned whole-vehicle power-on management system.

[0030] Based on the above technical scheme, the above scheme provided by the embodiment of the utility model requires that when a user needs to use a device that uses the power switch control circuit, the controller needs to be awakened. After the controller is awakened, the first interface of the controller outputs current, and the output current enters the magnetic induction coil. When current flows through the magnetic induction coil, the magnetic induction coil generates an induced magnetic field. Under the action of the induced magnetic field, the first contact and the second contact of the magnetic induction switch of the electromagnetic power main switch are attracted to each other, and a path is formed between the battery and the load. The battery provides working current to the load through the magnetic induction switch. When the user stops using the device using the power switch control circuit, it is necessary to control the controller to power off. After the controller is powered off, the first interface stops outputting current. At this time, the magnetic field generated by the magnetic induction coil disappears, the magnetic induction switch is reset, and the first contact and the second contact are disconnected, thereby causing the circuit between the battery and the load to be disconnected, thereby achieving automatic power-off of the battery. It can be seen that in this solution, the power supply status of the battery is linked to the power-on status of the controller. The user does not need to specifically control the power-on status of the battery, but only needs to control the working status of the controller, thereby ensuring that the battery will automatically power off when the user does not need to use the device using the power switch control circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0032] Figure 1 It is a schematic diagram of a manual power switch in the prior art;

[0033] Figure 2 It is a schematic diagram of an electromagnetic power main switch in the prior art;

[0034] Figure 3 A schematic diagram of the structure of a power switch control circuit disclosed in an embodiment of the present application;

[0035] Figure 4 A schematic diagram of the structure of a power switch control circuit disclosed in another embodiment of the present application;

[0036] Figure 5 A schematic diagram of the structure of a power switch control circuit disclosed in another embodiment of the present application;

[0037] Figure 6 A schematic diagram of the structure of a power switch control circuit disclosed in another embodiment of the present application;

[0038] Figure 7 A schematic diagram of the structure of a power switch control circuit disclosed in another embodiment of the present application;

[0039] Figure 8 A schematic diagram of the structure of a power switch control circuit disclosed in another embodiment of the present application;

[0040] Fig. 9 This is a schematic diagram of the structure of a power switch control circuit disclosed in another embodiment of the present application. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] The utility model can ensure that the power switch is automatically disconnected when the passenger gets off the bus, and the power switch is automatically closed when the passenger gets on the bus, so that it is truly possible to reduce the power consumption of the low-voltage storage battery.

[0043] See also Figure 3 The power switch control circuit disclosed in the embodiment of the present application may include: a battery 10, an electromagnetic power main switch 20 and a controller 30.

[0044] Regarding the storage battery 10, the storage battery is a device that can directly convert chemical energy into electrical energy, and is usually designed to be rechargeable. Its working principle is to achieve recharging through a reversible chemical reaction, that is, during the discharge process, chemical energy is converted into electrical energy to supply power externally; and during the charging process, electrical energy is converted into chemical energy through an external power source and stored.

[0045] There are mainly the following types of batteries:

[0046] Lithium batteries: including lithium-ion batteries and lithium polymer batteries, widely used in devices such as smartphones and laptops.

[0047] Lithium iron phosphate battery: has high energy density and safety performance, and is often used in new energy vehicles, energy storage equipment and other fields.

[0048] Ternary lithium battery: combines the advantages of lithium cobalt oxide, lithium manganese oxide and lithium nickel oxide. It has high energy density and cycle life and is widely used in new energy vehicles, portable electronic devices, etc.

[0049] Nickel-metal hydride battery: has high energy density and low cost, and is widely used in new energy vehicles, household energy storage devices, etc.

[0050] Lead-acid batteries: low cost, high safety, widely used in electric bicycles, automobile starting power supplies and other fields.

[0051] In this embodiment, the battery may be a low-voltage battery in a car, which may be a ternary lithium battery, a lithium iron phosphate battery or a lead-acid battery.

[0052] Regarding the electromagnetic power main switch 20, the first contact of the magnetic induction switch ③ of the electromagnetic power main switch 20 is connected to the current output interface of the battery 10, and the second contact of the magnetic induction switch ③ of the electromagnetic power main switch 20 is connected to the load. The electromagnetic power main switch is a switch that controls the on and off of the circuit based on the principle of electromagnetic induction. It is usually composed of components such as a magnetic induction coil ②, a movable contact and a static contact. When the magnetic induction coil ② is energized, a magnetic field is generated, and this magnetic field excites the iron core, making the iron core magnetic. The iron core is attracted by the magnetism and drives the contacts to close through the mechanical connection system, thereby closing the circuit and allowing current to pass. When the magnetic induction coil ② is powered off, the magnetic field disappears, the iron core loses its magnetism, and the contacts are affected by the elastic force and will be bounced back to the disconnected position, causing the circuit to be disconnected and not allowing current to flow.

[0053] The controller 30, the first interface of the controller 30 is connected to the first end of the magnetic induction coil ② of the electromagnetic power main switch 20 through a connecting line ④, the second end of the magnetic induction coil ② of the electromagnetic power main switch 20 is grounded, the first interface is used to output current after the controller 30 is awakened, and the first interface is also used to stop outputting current after the controller 30 obtains a power-off request. The controller 30 is the core controller of the device to which the present circuit is applied. When the controller 30 is awakened, it indicates that the user has a need to start the device, and the system needs to be powered on at this time. Therefore, when it is detected that the controller 30 is awakened, the first interface of the controller outputs a current of a preset size.

[0054] In the above scheme, when the user needs to use the device using the power switch control circuit, the controller 30 needs to be awakened. After the controller 30 is awakened, the first interface of the controller outputs current, and the output current enters the magnetic induction coil ②. When current flows through the magnetic induction coil ②, the magnetic induction coil ② generates an induced magnetic field. Under the action of the induced magnetic field, the first contact and the second contact of the magnetic induction switch ③ of the electromagnetic power main switch 20 are attracted to each other, and a path is formed between the battery and the load. The battery provides working current to the load through the magnetic induction switch ③. When the user stops using the device using the power switch control circuit, it is necessary to control the controller 30 to power off. After the controller 30 is powered off, the first interface stops outputting current. At this time, the magnetic field generated by the magnetic induction coil ② disappears, the magnetic induction switch ③ is reset, and the first contact and the second contact are disconnected, thereby causing the circuit between the battery and the load to be disconnected, thereby achieving automatic power-off of the battery. It can be seen that in this solution, the power supply state of the battery is linked to the power-on state of the controller. The user does not need to specifically control the power-on state of the battery, but only needs to control the working state of the controller, thereby ensuring that the battery will automatically power off when the user does not need to use the device using the power switch control circuit.

[0055] In the technical solution disclosed in this embodiment, it is considered that under certain special working conditions, after the first interface of the controller fails, the first interface cannot output current. When the first interface cannot output current, the magnetic induction switch ③ of the electromagnetic power main switch cannot be attracted. At this time, the battery cannot power the load, which will cause the user to be unable to use the device using the power switch control circuit. In order to prevent this from happening, see Figure 4 The present application may also provide a manual switch ①, the first end of the manual switch is connected to the first end of the magnetic induction coil ②, and the second end of the manual switch is connected to an external power supply. The manual switch ① is equivalent to Figure 2The micro switch ① in the scheme, the control method of the manual switch ① is the same as the control method of the micro switch ①. When the first interface of the controller cannot output current, the user can control the electromagnetic switch to be attracted through the manual switch ①, thereby improving the reliability of the power switch control circuit.

[0056] In the technical solution disclosed in this embodiment, when the first end of the magnetic induction coil ② is connected to the first interface and the manual switch at the same time, if the first interface has current output, the current output by the first interface may flow into the manual switch end. If the first interface has no current output, after the manual switch is closed, the current output by the external power supply will flow into the first interface, which may cause the current to flow back to the controller. In order to prevent this situation, see Figure 5 In this embodiment, a first diode D1 and a second diode D2 may be configured in the power switch control circuit. The first diode D1 is arranged between the first interface of the controller and the first end of the magnetic induction coil ② of the electromagnetic power main switch. The input end of the first diode D1 is connected to the first interface, and the output end of the first diode D1 is connected to the first end of the magnetic induction coil ②. At this time, the current between the first interface and the first end of the magnetic induction coil ② is a unidirectional current flowing from the first interface to the magnetic induction coil ②. The second diode D2 is arranged between the first end of the manual switch and the first end of the magnetic induction coil ② of the electromagnetic power main switch. The input end of the second diode D2 is connected to the manual switch ①, and the output end of the second diode D2 is connected to the first end of the magnetic induction coil ②. At this time, the current between the first manual switch ① and the first end of the magnetic induction coil ② is a unidirectional current flowing from the manual switch ① to the magnetic induction coil ②.

[0057] In the technical solution disclosed in this embodiment, in order to enable the user to timely understand the power supply status of the battery, a display ⑦ may also be provided in the above circuit, and the display ⑦ is connected to the second interface ⑥ of the controller, and the second interface ⑥ is used to represent the voltage signal of the switch state of the electromagnetic power supply main switch, that is, when current flows out of the first interface, the second interface ⑥ outputs a voltage signal to the display ⑦ to represent that the battery is supplying power, and when no current flows out of the first interface, the second interface ⑥ outputs a voltage signal to the display ⑦ to represent that the battery is not supplying power.

[0058] In this embodiment, the controller is the body controller BCM, the load is the chassis fuse box, and the display ⑦ is the instrument cluster IP. The body controller BCM is generally used for signal acquisition (such as light switch signal, wiper switch signal, defrost switch signal, horn switch signal, door and lock status switch signal) and control of electrical appliances such as lights, wipers, door locks, electric windows, and sunroofs. The instrument cluster IP is a display device for displaying image information such as vehicle speed, tire pressure, and vehicle faults. See Figure 7 The above circuit may further include: a one-button start switch and a remote control key signal receiver, wherein the one-button start switch is connected to the third interface of the vehicle body controller; and the remote control key signal receiver is connected to the third interface of the vehicle body controller.

[0059] Taking the car scenario as an example, this solution is explained:

[0060] When the first interface of each BCM is in normal state:

[0061] (1) When the user gets in the vehicle, he presses the remote control key, and the body controller BCM is awakened after verifying the anti-theft function. The body controller BCM drives the first interface HSD to output current to the magnetic induction coil ②. After the magnetic induction coil ② is energized, the magnetic induction switch ③ is attracted, and the battery supplies power to the chassis fuse box. At the same time, the body controller BCM outputs the corresponding voltage signal to the display IP through the second interface ⑥ (which can be a network interface). The display IP displays the corresponding icon to indicate that the battery power switch is in the connected state.

[0062] (2) When the user gets off the vehicle, he presses the one-button start switch. After receiving the power-off request, the body controller BCM disconnects the current output of the first interface HSD, the magnetic induction coil ② loses the current, the magnetic induction coil ② releases the magnetic induction switch ③, and the battery is disconnected from supplying power to the chassis fuse box;

[0063] When the first interface HSD of the body controller BCM fails and cannot output current:

[0064] (3) When the user gets in the car, he presses the remote control key, and the body controller BCM is awakened after verifying the anti-theft function. When the body controller BCM cannot drive the current output of the first interface HSD, the body controller BCM outputs a signal to the display IP through the second interface ⑥. The display IP displays an icon to indicate that the battery power switch is in the disconnected state, reminding the user to press the manual switch ① to keep the battery powered. By pressing the manual switch ①, the magnetic induction coil ② is energized, and the magnetic induction switch ③ is attracted, ensuring that the battery supplies power to the relevant functional parts of the chassis fuse box.

[0065] In the technical solution disclosed in this embodiment, due to the increase in the use time of the electromagnetic power main switch, the spring in the electromagnetic power main switch may rust, resulting in difficulty in the magnetic induction switch ③ being attracted. At this time, if the magnetic field generated by the magnetic induction coil ② is small, it will cause the magnetic induction switch ③ to be unable to be attracted. For this, see Figure 6 In this embodiment, N taps can be set on the magnetic induction coil ②, where N is a positive integer not less than 2, and one of the taps is connected to the first interface as the first end of the magnetic induction coil ②. The user can select a suitable tap as the first end of the magnetic induction coil ② according to the actual magnetic field size required, so that the electromagnetic power main switch has a longer service life.

[0066] In addition to increasing the service life of the electromagnetic power main switch by setting N taps on the magnetic induction coil ②, the present application can also adjust the current size of the magnetic induction coil ② so that the magnetic induction coil ② provides an induced magnetic field of different sizes. In this case, see Figure 7 , the above circuit may further include: an adjustable resistor R0, the adjustable resistor R0 being arranged between the first end of the magnetic induction coil ② and the first interface. In this solution, when the magnetic field generated by the magnetic induction coil ② cannot attract the magnetic induction switch ③, the current in the magnetic induction coil ② may be increased by adjusting the adjustable resistor R0. When the current in the magnetic induction coil ② increases, the magnetic field strength of the induced magnetic field generated by it will also increase, thereby generating a stronger force on the magnetic induction switch ③, so that the magnetic induction switch ③ can be reliably attracted.

[0067] In the technical solution disclosed in this embodiment, in order to improve the integration of the circuit, the electromagnetic power main switch can be integrated into the chassis fuse box.

[0068] In the technical solution disclosed in another embodiment of the present application, see Figure 8 , the magnetic induction coil ② can also be directly powered by the battery. In this case, the second end of the magnetic induction coil ② is connected to the battery. When the controller is awakened, the first interface of the controller is grounded to enable the magnetic induction coil ② to generate an induced magnetic field. When the controller obtains a power-off request, the first interface is controlled to be suspended. At this time, the battery cannot output current, and the magnetic induction coil ② cannot generate a magnetic field.

[0069] A vehicle power-on management system comprises any one of the power switch control circuits described above.

[0070] An automobile, characterized by comprising the above-mentioned vehicle power-on management system.

[0071] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0072] In the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0073] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0074] In the present utility model, if the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" appear, it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0075] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

[0076] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0077] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A power switch control circuit, characterized in that: include: Batteries; An electromagnetic power main switch, wherein a first contact of a magnetic induction switch of the electromagnetic power main switch is connected to a current output interface of the battery, and a second contact of the magnetic induction switch of the electromagnetic power main switch is connected to a load; A controller, wherein the first interface of the controller is connected to the first end of the magnetic induction coil of the electromagnetic power main switch, the second end of the magnetic induction coil of the electromagnetic power main switch is grounded, the first interface is used to output current after the controller is awakened, and the first interface is also used to stop outputting current after the controller obtains a power-off request.

2. The power switch control circuit according to claim 1, characterized in that: Also includes: A manual switch, wherein a first end of the manual switch is connected to a first end of the magnetic induction coil, and a second end of the manual switch is connected to an external power supply.

3. The power switch control circuit according to claim 2, characterized in that: Also includes: a first diode and a second diode; The first diode is arranged between the first interface of the controller and the first end of the magnetic induction coil of the electromagnetic power main switch; The second diode is arranged between the first end of the manual switch and the first end of the magnetic induction coil of the electromagnetic power main switch.

4. The power switch control circuit according to claim 1, characterized in that: Also includes: A display is connected to a second interface of the controller, and the second interface is used for a voltage signal representing a switch state of the electromagnetic power main switch.

5. The power switch control circuit according to claim 1, characterized in that: The magnetic induction coil is provided with N taps, where N is a positive integer not less than 2, and one of the taps is connected to the first interface as the first end of the magnetic induction coil.

6. The power switch control circuit according to claim 1, characterized in that: Also includes: An adjustable resistor is arranged between the first end of the magnetic induction coil and the first interface.

7. The power switch control circuit according to claim 1, characterized in that: The controller is a vehicle body controller, and the load is a chassis fuse box.

8. A power switch control circuit, characterized in that: include: Batteries; An electromagnetic power main switch, wherein a first contact of a magnetic induction switch of the electromagnetic power main switch is connected to a current output interface of the battery, and a second contact of the magnetic induction switch of the electromagnetic power main switch is connected to a load; A controller, wherein the first interface of the controller is connected to the first end of the magnetic induction coil of the electromagnetic power main switch, the second end of the magnetic induction coil of the electromagnetic power main switch is connected to the current output interface of the battery, the first interface is used to control the first interface to be grounded after the controller is awakened, and the first interface is also used to control the first interface to be suspended after the controller obtains a power-off request.

9. A vehicle power-on management system, characterized in that: A power switch control circuit comprising any one of claims 1-7 or 8.

10. An automobile, characterized in that: Including the vehicle power management system as described in claim 9.

Images