Vehicle-mounted power supply control device and system

Abstract

The utility model discloses a vehicle-mounted power supply control device and system, and relates to the technical field of vehicle-mounted power supplies, the vehicle-mounted power supply control device comprises an isolation module, a switch output module and a controller, the input end of the isolation module is connected with a system power supply, the input end of the switch output module is connected with the output end of the isolation module, and the input end of the switch output module is connected with the output end of the isolation module. The output end of the switch output module is used for being connected with a powered device, the controller is connected with the isolation module, after the system is powered on, the controller is used for controlling the isolation module to be switched on, and after the isolation module is switched on, the switch output module is switched on. The isolation module obtains the system power supply and inputs the system power supply to the switch output module, the isolation module isolates the electric equipment from the vehicle-mounted power supply, and stable power supply of the vehicle-mounted power supply is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted power supply, and in particular to a vehicle-mounted power supply control device and system. Background Art

[0002] The on-board power supply is a power supply device that can convert the 12V or 24V voltage of the car into 5V or other voltages for charging the load. The input voltage range of the on-board power supply is wide, which adapts to the characteristics of the electrical system of the car, and has the characteristics of high efficiency, energy saving and good heat dissipation.

[0003] During the power supply process of the existing vehicle power supply, the voltage and current are unstable due to the influence of the back-end circuit and the load, and the reliability of the vehicle power supply is reduced. Utility Model Content

[0004] The embodiment of the utility model provides a vehicle-mounted power supply control device and system to solve the technical problem in the related art that when the vehicle-mounted power supply supplies power to the power-consuming equipment, it is greatly affected by the power-consuming equipment, resulting in unstable power supply of the vehicle-mounted power supply.

[0005] In a first aspect, a vehicle-mounted power supply control device is provided, comprising: an isolation module, wherein an input end of the isolation module is connected to a system power supply;

[0006] A switch output module, wherein the input end of the switch output module is connected to the output end of the isolation module, and the output end of the switch output module is used to connect to a powered device;

[0007] A controller connected to the isolation module;

[0008] After the system is powered on, the controller is used to control the isolation module to be turned on, and after the isolation module is turned on, the switch output module is turned on.

[0009] In some embodiments, the isolation module includes:

[0010] a third resistor, a first end of the third resistor being connected to the controller, and a second end of the third resistor being grounded;

[0011] a second resistor, wherein a first end of the second resistor is connected to a first end of the third resistor;

[0012] A first switch tube, wherein a first end of the first switch tube is connected to a second end of the second resistor, and a second end of the first switch tube is grounded;

[0013] a first resistor, wherein a first end of the first resistor is connected to the system power supply, and a second end of the first resistor is connected to a third end of the first switch tube;

[0014] An isolation device, wherein the control end of the isolation device is connected to the third end of the first switch tube, the input end of the isolation device is connected to the system power supply, and the output end of the isolation device is connected to the input end of the switch output module.

[0015] In some embodiments, the switch output module includes:

[0016] a ninth resistor, a first end of the ninth resistor being connected to the output end of the isolation device;

[0017] a seventh resistor, a first end of the seventh resistor being connected to a second end of the ninth resistor;

[0018] a fourth switch tube, wherein a first end of the fourth switch tube is connected to a second end of the seventh resistor, and a second end of the fourth switch tube is grounded;

[0019] a fifth resistor, wherein a first end of the fifth resistor is connected to a third end of the fourth switch tube;

[0020] A second switch tube, wherein the first end of the second switch tube is connected to the second end of the fifth resistor, the second end of the second switch tube is connected to the output end of the isolation device, and the third end of the second switch tube serves as the output end of the switch output module and is used to connect to the powered device.

[0021] In some embodiments, a first end of the seventh resistor is connected to the controller.

[0022] In some embodiments, the switch output module further includes:

[0023] a fourth resistor, a first end of the fourth resistor being connected to a third end of the second switch tube;

[0024] a third switch tube, wherein a first end of the third switch tube is connected to a second end of the fourth resistor, and a second end of the third switch tube is connected to an output end of the isolation device;

[0025] A sixth resistor, wherein a first end of the sixth resistor is connected to the third end of the third switch tube, and a second end of the sixth resistor is connected to the first end of the second switch tube.

[0026] In some embodiments, the switch output module further includes:

[0027] A thermistor, wherein a first end of the thermistor is connected to the output end of the isolation device, and a second end of the thermistor is connected to the second end of the second switch tube.

[0028] In some embodiments, the switch output module further includes:

[0029] an electrolytic capacitor, wherein the positive electrode of the electrolytic capacitor is connected to the second end of the thermistor, and the negative electrode of the electrolytic capacitor is grounded;

[0030] A fifth capacitor, wherein a first end of the fifth capacitor is connected to the negative electrode of the electrolytic capacitor, and a second end of the fifth capacitor is connected to the second end of the second switch tube.

[0031] In some embodiments, there are two switch output modules.

[0032] In some embodiments, the switch output module further includes:

[0033] a sixth capacitor, wherein a first end of the sixth capacitor is connected to the first end of the fourth switch tube, and a second end of the sixth capacitor is connected to the second end of the fourth switch tube;

[0034] An eighth resistor is connected in parallel with the sixth capacitor.

[0035] In a second aspect, a vehicle-mounted power supply control system is provided, comprising the aforementioned vehicle-mounted power supply control device.

[0036] The beneficial effects brought by the technical solution provided by the utility model include:

[0037] The embodiment of the utility model provides a vehicle-mounted power supply control device and system, the vehicle-mounted power supply control device includes an isolation module, a switch output module and a controller, the input end of the isolation module is connected to the system power supply, the input end of the switch output module is connected to the output end of the isolation module, the output end of the switch output module is used to connect to the powered device, the controller is connected to the isolation module, after the system is powered on, the controller is used to control the isolation module to turn on, and after the isolation module is turned on, the switch output module is turned on. The isolation module of the utility model obtains the system power supply and inputs it to the switch output module, the isolation module isolates the power-consuming device from the vehicle-mounted power supply, and realizes the stable power supply of the vehicle-mounted power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 A schematic diagram of a vehicle-mounted power supply control device provided by an embodiment of the utility model;

[0040] Figure 2A schematic diagram of an isolation module of a vehicle power supply control device provided by an embodiment of the utility model;

[0041] Figure 3 A schematic diagram of a switch output module of a vehicle power supply control device provided by an embodiment of the utility model;

[0042] Figure 4 A schematic diagram of a controller of a vehicle-mounted power supply control device provided by an embodiment of the utility model;

[0043] Figure 5 An overall schematic diagram of a vehicle-mounted power supply control device provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of 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.

[0045] The embodiment of the utility model provides a vehicle-mounted power supply control device and system, which can solve the technical problem in the prior art of the related art that when the vehicle-mounted power supply is used to power the electrical equipment, the electrical equipment is greatly affected, resulting in unstable power supply of the vehicle-mounted power supply.

[0046] See also Figure 1 As shown, an embodiment of the utility model provides a vehicle-mounted power supply control device, including an isolation module, a switch output module and a controller.

[0047] The input end of the isolation module is connected to the system power supply, the input end of the switch output module is connected to the output end of the isolation module, the output end of the switch output module is used to connect to the powered device, the controller is connected to the isolation module, after the system is powered on, the controller is used to control the isolation module to turn on, and after the isolation module is turned on, the switch output module is turned on. The isolation module of the utility model obtains the system power supply and inputs it to the switch output module. The isolation module isolates the influence of the back-end circuit and controls the current of the whole machine to achieve stable power supply.

[0048] As an optional implementation, in a utility model embodiment, see Figure 2As shown, the isolation module is provided with a third resistor R3, a second resistor R2, a first switch tube Q1, the first resistor R1 and an isolation device U1, the first end of the third resistor R3 is connected to the controller MCU, the second end of the third resistor R3 is grounded, the first end of the second resistor R2 is connected to the first end of the third resistor R3, the first end of the first switch tube Q1 is connected to the second end of the second resistor R2, the second end of the first switch tube Q1 is grounded, the first end of the first resistor R1 is connected to the system power supply_5V, the second end of the first resistor R1 is connected to the third end of the first switch tube Q1, the control end of the isolation device U1 is connected to the third end of the first switch tube Q1, the input end of the isolation device U1 is connected to the system power supply_5V, and the output end of the isolation device U1 is connected to the input end of the switch output module. In this embodiment, the isolation device U1 is a PMOS tube, using FDC658P, wherein the fourth end is the S pole of the PMOS tube, i.e., the input end, the third end is the G pole of the PMOS tube, i.e., the control end, the first, second, fifth and sixth ends are the D pole of the PMOS tube, i.e., the output end. After the system is powered on, the first drive signal MCUcontrol 1 of the controller MCU controls the opening of the first switch tube Q1, so that the third terminal G of the isolation device U1 is at a low level, the isolation device U1 is turned on, and the system power supply _5V is output to the controllable power supply _+5V through the isolation device U1. The output is stable and reliable and can adapt to various load changes.

[0049] As an optional implementation, in a utility model embodiment, see Figure 3 As shown, the switch output module is provided with a ninth resistor R9, a seventh resistor R7, a fourth switch tube Q4, a fifth resistor R5 and a second switch tube Q2.

[0050] The first end of the ninth resistor R9 is connected to the output end of the isolation device U1, the first end of the seventh resistor R7 is connected to the second end of the ninth resistor R9, the first end of the fourth switch tube Q4 is connected to the second end of the seventh resistor R7, the second end of the fourth switch tube Q4 is grounded, the first end of the fifth resistor R5 is connected to the third end of the fourth switch tube Q4, the first end of the second switch tube Q2 is connected to the second end of the fifth resistor R5, the second end of the second switch tube Q2 is connected to the output end of the isolation device U1, and the third end of the second switch tube Q2 is used as the output end of the switch output module to connect to the powered device. The system power supply_5V is output as the controllable power supply_+5V through the isolation device U1, and the controllable power supply_+5V turns on the fourth switch tube Q4, so that the first end of the second switch tube Q2, that is, the G pole, becomes a low level, thereby turning on the second switch tube Q2, and the controllable power supply_+5V is output to the sensor power supply 5V through Q2. The switch output module will obtain the controllable power supply_5V from the system power supply_5V and output it as the sensor power supply, and play the role of output isolation, output short circuit and short connection to the power supply.

[0051] As an optional implementation, in a utility model embodiment, see Figure 3 and Figure 4 As shown, the Sensore_in of the controller MCU is used to connect with the powered device, i.e., the sensor, to obtain the sensor state, monitor and control the power output state. The first end of the seventh resistor R7 is connected to the controller MCU, and the second drive signal of the controller MCU, i.e., MCU control 2, turns on or off the fourth switch tube Q4 according to the power usage, thereby controlling the output of the switch output module. When the switch output module fails, the hardware cannot turn off the second switch tube Q2, and the long-term conduction of the second switch tube Q2 will cause the control device to fail, such as damage to the second switch tube Q2, controllable power supply _+5V voltage drift, etc., and a single software control output will have a certain delay, which cannot meet the needs of some equipment with power supply timing requirements. The controller MCU is used to access the switch output module, and the switch output module is controlled by combining software and hardware control, while meeting the reliability of the device and the real-time performance of power-on.

[0052] As an optional implementation, in a utility model embodiment, see Figure 3 As shown, the switch output module is further provided with a fourth resistor R4, a third switch tube Q3 and a sixth resistor R6.

[0053] The first end of the fourth resistor R4 is connected to the third end of the second switch tube Q2, the first end of the third switch tube Q3 is connected to the second end of the fourth resistor R4, the second end of the third switch tube Q3 is connected to the output end of the isolation device U1, the first end of the sixth resistor R6 is connected to the third end of the third switch tube Q3, and the second end of the sixth resistor R6 is connected to the first end of the second switch tube Q2. When the output end of the switch output module is short-circuited, and the sensor power supply _+5V becomes 0V due to the short circuit, the first end of the third switch tube Q3, i.e., the base, becomes low level, and the third switch tube Q3 is turned on, the third end of the third switch tube Q3, i.e., the collector, becomes high level, the first end of the second switch tube Q2, i.e., the G pole, becomes high level, the second switch tube Q2 is turned off, and the controllable power supply _+5V is not affected. The third switch tube Q3 implements short-circuit protection of the sensor power supply _+5V uS pole, ensuring stable operation of the power supply in the control device, high safety, and multiple protection measures to avoid damage to electrical equipment.

[0054] As an optional implementation, in a utility model embodiment, see Figure 3 As shown, the switch output module is also provided with a thermistor RT1, a first end of the thermistor RT1 is connected to the output end of the isolation device U1, a second end of the thermistor RT1 is connected to the second end of the second switch tube Q2, and the thermistor RT1 realizes voltage stabilization and overcurrent protection in the circuit.

[0055] As an optional implementation, in a utility model embodiment, see Figure 3As shown, the switch output module is further provided with an electrolytic capacitor E1 and a fifth capacitor C5.

[0056] The positive electrode of the electrolytic capacitor E1 is connected to the second end of the thermistor RT1, the negative electrode of the electrolytic capacitor E1 is grounded, the first end of the fifth capacitor C5 is connected to the negative electrode of the electrolytic capacitor E1, and the second end of the fifth capacitor C5 is connected to the second end of the second switch tube Q2. The charging and discharging characteristics of the electrolytic capacitor are utilized to reduce the change of the power supply voltage in the circuit and output a relatively stable DC voltage.

[0057] As an optional implementation, in a utility model embodiment, see Figure 5 As shown, there are two switch output modules, and the second switch tube Q2 and the sixth switch tube Q3 of the switch output module are connected to realize multi-channel power output. The sensor power supply 5V_1 and the sensor power supply 5V_2 are output power supplies, and when one of them is short-circuited, taking the sensor power supply 5V_1 as an example, when the sensor power supply 5V_1 becomes 0V due to the short circuit, the first end of the third switch tube Q3, that is, the base, becomes a low level. At this time, the third switch tube Q3 is turned on, and the third end of the third switch tube Q3, that is, the collector, becomes a high level. The first end of the second switch tube Q2, that is, the G pole, becomes a high level, and the second switch tube Q2 is cut off. The controllable power supply _+5V is not affected, and the sensor power supply 5V_2 can continue to provide output. The multiple power supplies are independent of each other and do not affect each other.

[0058] As an optional implementation, in a utility model embodiment, see Figure 3 As shown, the switch output module is also provided with a sixth capacitor C6 and an eighth resistor R8, the first end of the sixth capacitor C6 is connected to the first end of the fourth switch tube Q4, the second end of the sixth capacitor C6 is connected to the second end of the fourth switch tube Q4, and the eighth resistor R8 is connected in parallel with the sixth capacitor C6, wherein the fourth switch tube Q4 is an NPN type transistor, and a sixth capacitor C6 and an eighth resistor R8 are connected in parallel between the first end, i.e., the base, and the second end, i.e., the emitter, of the fourth switch tube Q4 to stabilize and adjust the voltage and current of the transistor base, perform capacitor filtering, and improve anti-interference capability.

[0059] The embodiment of the utility model further provides a vehicle-mounted power supply control system, comprising the aforementioned vehicle-mounted power supply control device, wherein the vehicle-mounted power supply control device comprises an isolation module, a switch output module and a controller.

[0060] The input end of the isolation module is connected to the system power supply, the input end of the switch output module is connected to the output end of the isolation module, the output end of the switch output module is used to connect to the powered device, the controller is connected to the isolation module, after the system is powered on, the controller is used to control the isolation module to turn on, and after the isolation module is turned on, the switch output module is turned on. The isolation module of the utility model obtains the system power supply and inputs it to the switch output module. The isolation module isolates the influence of the back-end circuit and controls the current of the whole machine to achieve stable power supply.

[0061] As an optional implementation, in a utility model embodiment, see Figure 2 As shown, the isolation module is provided with a third resistor R3, a second resistor R2, a first switch tube Q1, the first resistor R1 and an isolation device U1, the first end of the third resistor R3 is connected to the controller MCU, the second end of the third resistor R3 is grounded, the first end of the second resistor R2 is connected to the first end of the third resistor R3, the first end of the first switch tube Q1 is connected to the second end of the second resistor R2, the second end of the first switch tube Q1 is grounded, the first end of the first resistor R1 is connected to the system power supply_5V, the second end of the first resistor R1 is connected to the third end of the first switch tube Q1, the control end of the isolation device U1 is connected to the third end of the first switch tube Q1, the input end of the isolation device U1 is connected to the system power supply_5V, and the output end of the isolation device U1 is connected to the input end of the switch output module. In this embodiment, the isolation device U1 is a PMOS tube, using FDC658P, wherein the fourth end is the S pole of the PMOS tube, i.e., the input end, the third end is the G pole of the PMOS tube, i.e., the control end, the first, second, fifth and sixth ends are the D pole of the PMOS tube, i.e., the output end. After the system is powered on, the first drive signal MCUcontrol 1 of the controller MCU controls the first switch tube Q1 to be turned on, so that the third terminal G of the isolation device U1 is at a low level, the isolation device U1 is turned on, and the system power supply _5V is output to the controllable power supply _+5V through the isolation device U1.

[0062] As an optional implementation, in a utility model embodiment, see Figure 3 As shown, the switch output module is provided with a ninth resistor R9, a seventh resistor R7, a fourth switch tube Q4, a fifth resistor R5 and a second switch tube Q2.

[0063] The first end of the ninth resistor R9 is connected to the output end of the isolation device U1, the first end of the seventh resistor R7 is connected to the second end of the ninth resistor R9, the first end of the fourth switch tube Q4 is connected to the second end of the seventh resistor R7, the second end of the fourth switch tube Q4 is grounded, the first end of the fifth resistor R5 is connected to the third end of the fourth switch tube Q4, the first end of the second switch tube Q2 is connected to the second end of the fifth resistor R5, the second end of the second switch tube Q2 is connected to the output end of the isolation device U1, and the third end of the second switch tube Q2 is used as the output end of the switch output module to connect to the powered device. The system power supply_5V is output as the controllable power supply_+5V through the isolation device U1, and the controllable power supply_+5V turns on the fourth switch tube Q4, so that the first end of the second switch tube Q2, that is, the G pole, becomes a low level, thereby turning on the second switch tube Q2, and the controllable power supply_+5V is output to the sensor power supply 5V through Q2. The switch output module will obtain the controllable power supply_5V from the system power supply_5V and output it as the sensor power supply, and play the role of output isolation, output short circuit and short connection to the power supply.

[0064] As an optional implementation, in a utility model embodiment, see Figure 3 and Figure 4 As shown, the Sensore_in of the controller MCU is used to connect with the powered device, i.e., the sensor, to obtain the sensor state, monitor and control the power output state. The first end of the seventh resistor R7 is connected to the controller MCU, and the second drive signal of the controller MCU, i.e., MCU control 2, turns on or off the fourth switch tube Q4 according to the power usage, thereby controlling the output of the switch output module. When the switch output module fails, the hardware cannot turn off the second switch tube Q2, and the long-term conduction of the second switch tube Q2 will cause the control device to fail, such as damage to the second switch tube Q2, controllable power supply _+5V voltage drift, etc., and a single software control output will have a certain delay, which cannot meet the needs of some equipment with power supply timing requirements. The controller MCU is used to access the switch output module, and the switch output module is controlled by combining software and hardware control, while meeting the reliability of the device and the real-time performance of power-on.

[0065] As an optional implementation, in a utility model embodiment, see Figure 3 As shown, the switch output module is further provided with a fourth resistor R4, a third switch tube Q3 and a sixth resistor R6.

[0066] The first end of the fourth resistor R4 is connected to the third end of the second switch tube Q2, the first end of the third switch tube Q3 is connected to the second end of the fourth resistor R4, the second end of the third switch tube Q3 is connected to the output end of the isolation device U1, the first end of the sixth resistor R6 is connected to the third end of the third switch tube Q3, and the second end of the sixth resistor R6 is connected to the first end of the second switch tube Q2. When the output end of the switch output module is short-circuited and the sensor power supply _+5V becomes 0V due to the short circuit, the first end of the third switch tube Q3, i.e., the base, becomes a low level. At this time, the third switch tube Q3 is turned on, the third end of the third switch tube Q3, i.e., the collector, becomes a high level, the first end of the second switch tube Q2, i.e., the G pole, becomes a high level, the second switch tube Q2 is turned off, the controllable power supply _+5V is not affected, and the third switch tube Q3 implements short-circuit protection of the sensor power supply _+5V uS pole, thereby ensuring stable operation of the power supply in the control device.

[0067] As an optional implementation, in a utility model embodiment, see Figure 3 As shown, the switch output module is also provided with a thermistor RT1, a first end of the thermistor RT1 is connected to the output end of the isolation device U1, a second end of the thermistor RT1 is connected to the second end of the second switch tube Q2, and the thermistor RT1 realizes voltage stabilization and overcurrent protection in the circuit.

[0068] As an optional implementation, in a utility model embodiment, see Figure 3 As shown, the switch output module is further provided with an electrolytic capacitor E1 and a fifth capacitor C5.

[0069] The positive electrode of the electrolytic capacitor E1 is connected to the second end of the thermistor RT1, the negative electrode of the electrolytic capacitor E1 is grounded, the first end of the fifth capacitor C5 is connected to the negative electrode of the electrolytic capacitor E1, and the second end of the fifth capacitor C5 is connected to the second end of the second switch tube Q2. The charging and discharging characteristics of the electrolytic capacitor are utilized to reduce the change of the power supply voltage in the circuit and output a relatively stable DC voltage.

[0070] As an optional implementation, in a utility model embodiment, see Figure 5As shown, there are two switch output modules, and the second switch tube Q2 and the sixth switch tube Q3 of the switch output module are connected to realize multi-channel power output. The sensor power supply 5V_1 and the sensor power supply 5V_2 are output power supplies, and when one of them is short-circuited, taking the sensor power supply 5V_1 as an example, when the sensor power supply 5V_1 becomes 0V due to the short circuit, the first end of the third switch tube Q3, that is, the base, becomes a low level. At this time, the third switch tube Q3 is turned on, and the third end of the third switch tube Q3, that is, the collector, becomes a high level. The first end of the second switch tube Q2, that is, the G pole, becomes a high level, and the second switch tube Q2 is cut off. The controllable power supply _+5V is not affected, and the sensor power supply 5V_2 can continue to provide output. The multiple power supplies are independent of each other and do not affect each other.

[0071] As an optional implementation, in a utility model embodiment, see Figure 3 As shown, the switch output module is also provided with a sixth capacitor C6 and an eighth resistor R8, the first end of the sixth capacitor C6 is connected to the first end of the fourth switch tube Q4, the second end of the sixth capacitor C6 is connected to the second end of the fourth switch tube Q4, and the eighth resistor R8 is connected in parallel with the sixth capacitor C6, wherein the fourth switch tube Q4 is an NPN type transistor, and a sixth capacitor C6 and an eighth resistor R8 are connected in parallel between the first end, i.e., the base, and the second end, i.e., the emitter, of the fourth switch tube Q4 to stabilize and adjust the voltage and current of the transistor base, perform capacitor filtering, and improve anti-interference capability.

[0072] In the description of the present utility model, it should be noted that the terms "upper", "lower", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0073] It should be noted that, in the present utility model, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" 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 includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0074] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can 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 of the present invention.

Claims

1. A vehicle-mounted power supply control device, characterized in that: include: An isolation module, wherein an input end of the isolation module is connected to a system power supply; A switch output module, wherein the input end of the switch output module is connected to the output end of the isolation module, and the output end of the switch output module is used to connect to a powered device; A controller connected to the isolation module; After the system is powered on, the controller is used to control the isolation module to be turned on, and after the isolation module is turned on, the switch output module is turned on.

2. The vehicle-mounted power supply control device according to claim 1, characterized in that: The isolation module comprises: a third resistor, a first end of the third resistor being connected to the controller, and a second end of the third resistor being grounded; a second resistor, wherein a first end of the second resistor is connected to a first end of the third resistor; A first switch tube, wherein a first end of the first switch tube is connected to a second end of the second resistor, and a second end of the first switch tube is grounded; a first resistor, wherein a first end of the first resistor is connected to the system power supply, and a second end of the first resistor is connected to a third end of the first switch tube; An isolation device, wherein the control end of the isolation device is connected to the third end of the first switch tube, the input end of the isolation device is connected to the system power supply, and the output end of the isolation device is connected to the input end of the switch output module.

3. The vehicle-mounted power supply control device according to claim 2, characterized in that: The switch output module comprises: a ninth resistor, a first end of the ninth resistor being connected to the output end of the isolation device; a seventh resistor, a first end of the seventh resistor being connected to a second end of the ninth resistor; a fourth switch tube, wherein a first end of the fourth switch tube is connected to a second end of the seventh resistor, and a second end of the fourth switch tube is grounded; a fifth resistor, wherein a first end of the fifth resistor is connected to a third end of the fourth switch tube; A second switch tube, wherein the first end of the second switch tube is connected to the second end of the fifth resistor, the second end of the second switch tube is connected to the output end of the isolation device, and the third end of the second switch tube serves as the output end of the switch output module and is used to connect to the powered device.

4. The vehicle-mounted power supply control device according to claim 3, characterized in that: The first end of the seventh resistor is connected to the controller.

5. The vehicle-mounted power supply control device according to claim 3, characterized in that: The switch output module also includes: a fourth resistor, a first end of the fourth resistor being connected to a third end of the second switch tube; a third switch tube, wherein a first end of the third switch tube is connected to a second end of the fourth resistor, and a second end of the third switch tube is connected to an output end of the isolation device; A sixth resistor, wherein a first end of the sixth resistor is connected to the third end of the third switch tube, and a second end of the sixth resistor is connected to the first end of the second switch tube.

6. The vehicle-mounted power supply control device according to claim 5, characterized in that: The switch output module also includes: A thermistor, wherein a first end of the thermistor is connected to the output end of the isolation device, and a second end of the thermistor is connected to the second end of the second switch tube.

7. The vehicle-mounted power supply control device according to claim 6, characterized in that: The switch output module also includes: an electrolytic capacitor, wherein the positive electrode of the electrolytic capacitor is connected to the second end of the thermistor, and the negative electrode of the electrolytic capacitor is grounded; A fifth capacitor, wherein a first end of the fifth capacitor is connected to the negative electrode of the electrolytic capacitor, and a second end of the fifth capacitor is connected to the second end of the second switch tube.

8. The vehicle-mounted power supply control device according to claim 5, characterized in that: There are two switch output modules.

9. The vehicle-mounted power supply control device according to claim 5, characterized in that: The switch output module also includes: a sixth capacitor, wherein a first end of the sixth capacitor is connected to the first end of the fourth switch tube, and a second end of the sixth capacitor is connected to the second end of the fourth switch tube; An eighth resistor is connected in parallel with the sixth capacitor.

10. A vehicle-mounted power supply control system, characterized in that: The vehicle-mounted power supply control device comprises the vehicle-mounted power supply control device according to any one of claims 1 to 9.

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