Intelligent power supply method for vehicle-mounted electronic equipment

Abstract

The present invention discloses an intelligent power supply method for vehicle-mounted electronic equipment, and the implementation process includes connecting the vehicle-mounted electronic equipment with a vehicle battery, and setting a time delay switch module between the vehicle-mounted electronic equipment and the vehicle battery; mounting a voltage identification module at the output end of the power relay of the ON gear of the vehicle; connecting the voltage identification module with the time delay switch module, and the signal sent by the voltage identification module to the time delay switch module adopts a post-transmission priority mode. The present invention provides an intelligent power supply method for vehicle-mounted electronic equipment, which connects the vehicle-mounted electronic equipment with the vehicle battery through a time delay switch, and sets a voltage identification module between the vehicle-mounted electronic equipment and the ON gear of the vehicle, and utilizes the time delay control characteristics of the time delay switch in combination with the voltage identification of the vehicle battery, so that the vehicle-mounted electronic equipment can be started after the vehicle is fully started, which will not cause pressure on the original circuit of the vehicle, and the vehicle-mounted electronic equipment will not be affected by the voltage drop when the vehicle is started.

Description

Technical Field

[0001] The present invention relates to the technical field of power consumption and power supply of vehicle-mounted electronic equipment, and more specifically, to an intelligent power supply method for vehicle-mounted electronic equipment. Background Art

[0002] With the increase in the total number of cars and the number of cars owned by individuals in my country, as well as the personalized development of contemporary young people, the phenomenon of car modification has increased. The proportion of modified and added vehicle electronic equipment in the car modification market has gradually increased, including electronic equipment such as lights, audio, refrigerators, display screens, etc., as well as some modified and added high-power electronic equipment.

[0003] The power source of these on-board electronic devices is the car body. Therefore, during the modification process, if the power supply mode is not properly handled, it is likely to cause impact and damage to the car body and the modified on-board electronic equipment, especially some high-precision and high-value embedded smart devices. The impact is particularly obvious. Such devices are mostly controlled by the CPU and operating system, such as the on-board LED / LCD advertising display screen.

[0004] In the prior art, there are two methods for obtaining power when modifying vehicle-mounted electronic equipment.

[0005] One is to directly draw power from the car's cigarette lighter. This method is limited by the power of the cigarette lighter. When the power of the vehicle-mounted electronic equipment connected to the cigarette lighter is large, the cigarette lighter cannot withstand the overload, making the vehicle-mounted electronic equipment unable to work properly, and may even burn the cigarette lighter circuit. In addition, vehicle-mounted electronic equipment similar to vehicle-mounted LED / LCD advertising display screens have different working powers when playing different pictures. For example, the working power of a picture with a white background is 3-10 times that of a picture with a black background.

[0006] Another way to draw power is to draw power from the car's ON position. When the car is started, whether it is key-started or button-started, its gear position quickly reaches the ON position from the ACC position, then quickly turns from the ON position to the START position, and finally automatically returns to the ON position. In this process, when the car gear position stays in the ON position, the on-board electronic equipment has been powered on, its CPU and its related control modules have entered the initialization state, and at the same time, it starts to read the device data and other startup operations, but when the gear position is turned to the START position, the voltage of the ON position drops instantly, and the on-board electronic equipment that draws power from the ON position determines that the system is powered off. At this time, the relevant startup data of the CPU and its related control modules have not been saved in time and stop running or operate abnormally. Then, after the car is fully started, the car gear position is restored to the ON position, and the voltage returns to normal. At this time, the on-board electronic equipment is powered on again and operates normally. In this way, every time the car is started, the on-board electronic equipment will be in a frequent startup and shutdown cycle in a short period of time, or a rapid switch between normal operation and abnormal operation. If this continues for a long time, it will inevitably cause impact and damage to the on-board electronic equipment and reduce the working life of the on-board electronic equipment. Summary of the invention

[0007] In order to overcome the damage to the vehicle body or the vehicle-mounted electronic equipment caused by the existing power supply method of the vehicle-mounted electronic equipment, the present invention provides an intelligent power supply method for the vehicle-mounted electronic equipment, so that the vehicle-mounted electronic equipment is connected to the vehicle battery through a delay switch, and a voltage identification module is arranged between the vehicle-mounted electronic equipment and the vehicle ON gear. The delay control characteristics of the delay switch are combined with the voltage identification of the vehicle battery, so that the vehicle-mounted electronic equipment can be started after the vehicle is fully started, which will not cause pressure on the original circuit of the vehicle, and the vehicle-mounted electronic equipment will not be affected by the voltage drop when the vehicle is started, which is beneficial to extending the working life of the vehicle-mounted electronic equipment.

[0008] The technical solution of the present invention is as follows:

[0009] An intelligent power supply method for vehicle-mounted electronic equipment, the implementation process includes

[0010] Step S1. Connecting the vehicle-mounted electronic device to the vehicle battery, and setting a delay switch module between the vehicle-mounted electronic device and the vehicle battery;

[0011] Step S2. Mount a voltage identification module on the output end of the power relay in the ON position of the car;

[0012] Step S3: connecting the voltage identification module and the delay switch module, wherein the signal sent by the voltage identification module to the delay switch module adopts a later-send priority mode.

[0013] In the above-mentioned intelligent power supply method for vehicle-mounted electronic equipment, the delay switch module includes a high-level trigger device, a low-level trigger device, a timing device and a delay switch, the high-level trigger device and the low-level trigger device are both connected to the delay switch through the timing device, and the vehicle-mounted electronic equipment is controlled by the delay switch.

[0014] In the above-mentioned intelligent power supply method for vehicle-mounted electronic equipment, the voltage identification module includes a low-level identification terminal and a high-level identification terminal. The voltage identification module identifies the output voltage of the vehicle battery, and selectively sends a low-level signal to the delay switch module through the low-level identification terminal or sends a high-level signal to the delay switch module through the high-level identification terminal according to the output voltage of the vehicle battery. The low-level signal causes the low-level trigger device of the delay switch module to trigger a closing instruction, and the high-level signal causes the high-level trigger device of the delay switch module to trigger an opening instruction.

[0015] In the above-mentioned intelligent power supply method for vehicle-mounted electronic equipment, the voltage identification module sends a control instruction to the delay switch module after identifying the output voltage of the vehicle battery. After the control instruction is received by the delay switch module, the delay switch module prepares to execute the control instruction and enters the timing state. Within the set timing time period, if the voltage identification module sends a control instruction to the delay switch module again, the delay switch module cancels the original control instruction, prepares to execute a new control instruction and enters the timing state again.

[0016] The above-mentioned intelligent power supply method for an on-board electronic device, the vehicle startup and the startup mode of the on-board electronic device:

[0017] When the vehicle gear is in the LOCK gear position or the ACC gear position, the vehicle is in a stopped state, and the vehicle-mounted electronic device is in a turned-off state;

[0018] When the gear of the vehicle is changed from the ACC gear to the ON gear, the power relay is turned on, the voltage identification module sends an opening instruction to the delay switch module, the delay switch of the delay switch module sends a ready-to-open instruction to the vehicle-mounted electronic device, and enters a timing state of a second set time period, and the vehicle-mounted electronic device is in a closed state;

[0019] When the gear of the car is changed from the ON gear to the START gear, the start relay is turned on, the car engine is started, the voltage identification module sends a closing instruction to the delay switch module, and the delay switch of the delay switch module sends a ready-to-close instruction to the on-board electronic device, clears the timing of the second set time period and enters the timing state of the first set time period, and the on-board electronic device is in a closed state;

[0020] When the car gear is also changed from the START gear to the ON gear, the car engine works normally, the voltage identification module sends a start instruction to the delay switch module, the delay switch of the delay switch module sends a ready to start instruction to the on-board electronic device, the timing of the first set time period is reset and enters the timing state of the second set time period, after the timing of the second set time period is completed, the delay switch connects the circuit between the on-board electronic device and the battery, and the on-board electronic device is started.

[0021] Furthermore, the length of the first set time period is shorter than the length of the second set time period.

[0022] In the above-mentioned intelligent power supply method for vehicle-mounted electronic equipment, the vehicle generator is connected to the vehicle battery and the vehicle-mounted electronic equipment.

[0023] When the automobile engine works normally, the automobile generator starts to enter the self-excitation state, and at the same time, the automobile generator supplies energy to the automobile battery and the on-board electronic equipment until the automobile battery is fully charged, the voltage regulator disconnects the excitation current of the automobile generator, and the automobile generator stops generating electricity;

[0024] During the operation of the car, the car generator continuously cycles: when the voltage of the car battery drops to a certain value, the voltage regulator reconnects the excitation current of the car generator, the car generator starts and resumes power generation, and at the same time charges the car battery and supplies power to the on-board electronic equipment. When the car battery is fully charged, the voltage regulator disconnects the excitation current of the car generator, and the car generator stops generating power until the next time the voltage of the car battery drops to a certain value.

[0025] Furthermore, the time required for the automobile generator to switch from the externally excited state to the self-excited state is less than the second set time period of the delay switch module.

[0026] In the above-mentioned intelligent power supply method for vehicle-mounted electronic equipment, when the car is turned off, the car gear is changed from the ON gear to the ACC gear, the power relay connected to the ON gear is turned off, the output end of the car battery is powered off, the voltage identification module sends a low-level signal to the delay switch module, the delay switch module sends a shutdown preparation instruction to the vehicle-mounted electronic equipment and enters a timing state of a first set time period, the vehicle-mounted electronic equipment saves operating data, and after the timing of the first set time period is completed, the vehicle-mounted electronic equipment is turned off.

[0027] Furthermore, the time during which the vehicle-mounted electronic device is in a shutdown ready state for storing operating data is less than the first set time period.

[0028] The present invention according to the above scheme has the beneficial effect that:

[0029] 1. The modified on-board electronic equipment does not affect the operation of other electronic products in the car. The on-board electronic equipment is directly connected to the car battery, not through the operating circuit of other electronic equipment, so it will not cause damage to the circuit of other electronic equipment. And when the car is fully started, the conversion mechanism of the car generator between external excitation and self-excitation enables the car generator to provide power to all electronic products in the car, ensuring the normal operation of other electronic products.

[0030] 2. On-board electronic devices can minimize the power supply time of the car battery. When the car starts, due to the start-up mechanism of the delay switch, the on-board electronic devices can avoid the process of sudden changes in the voltage of the car battery and start after the car is fully started. This not only protects the operating data and working hardware of the on-board electronic devices, but also reduces the connection time of the car battery and shortens the unstable power supply time. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art 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 paying creative work.

[0032] Figure 1 The present invention is a schematic diagram of the connection structure of the vehicle gear and the vehicle-mounted electronic equipment.

[0033] Figure 2 for Figure 1 Partial magnification Figure 1 .

[0034] Figure 3 for Figure 1 Partial magnification Figure 2 .

[0035] Figure 4 It is a schematic diagram of the starting mechanism of the car and the on-board electronic equipment in the present invention. DETAILED DESCRIPTION

[0036] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0037] An intelligent power supply method for vehicle-mounted electronic equipment, such as Figure 1, Figure 2 , Figure 3 As shown, the specific implementation is as follows.

[0038] Step S1. Connect the vehicle-mounted electronic device to the vehicle battery, and set a delay switch module between the vehicle-mounted electronic device and the vehicle battery.

[0039] When connecting, the positive power line of the vehicle-mounted electronic device is directly mounted to the positive pole of the car battery, and the negative power line is grounded, that is, the negative pole of the car battery is connected to the car body, and the negative pole of the vehicle-mounted electronic device is also connected to the car body.

[0040] In this application, the vehicle-mounted electronic devices modified by the car are powered directly by the car battery, rather than the cigarette lighter and the car's ON gear. Due to the direct connection to the car battery, the working power of the vehicle-mounted electronic devices is less limited, and they do not pass through other device circuits or control circuits in the middle, and will not cause damage to the internal circuits of the car.

[0041] The delay switch module includes four parts: a high-level trigger device, a low-level trigger device, a timing device and a delay switch. The high-level trigger device and the low-level trigger device are both connected to the delay switch through the timing device, and the on-board electronic equipment is controlled by the delay switch.

[0042] Step S2: Mount a voltage identification module on the output end of the power relay in the ON position of the car.

[0043] The voltage identification module includes a low level identification terminal and a high level identification terminal. Since the output voltages of the automobile batteries of different types of automobiles are different, the voltage identification module must be selected according to the type of automobile to be modified. In one embodiment, the voltage identification module is mainly used for small automobiles, including passenger cars, small buses, etc., and the voltage identification range of its high level identification terminal is 12V-14V, and it is judged as a high level voltage, and the output voltages of the remaining automobile batteries are all identified by the low level identification terminal and judged as low level voltages. In another embodiment, the voltage identification module is mainly used for large automobiles, including large buses, diesel vehicles, etc., and the voltage identification range of its high level identification terminal is 24V-29V, and the voltage in this range is judged as a high level voltage, and the remaining output voltages are all identified by the low level identification terminal and judged as low level voltages. In the specific implementation process, the selection of the voltage identification module is not determined by the main applicable scope, but is selected according to the output voltage of the modified automobile battery.

[0044] Step S3: Connect the voltage identification module and the delay switch module.

[0045] The voltage identification module is connected to the delay switch module. When the voltage identification module identifies the output voltage of the car battery, it sends a high-level signal to the delay switch module after being identified as a high-level voltage through the identification and judgment of the low-level identification terminal and the high-level identification terminal, and sends a low-level signal to the delay switch module after being identified as a low-level voltage. The high-level signal is received by the high-level trigger device of the delay switch module, and the high-level trigger device sends a control signal to the delay switch through the timing device to control the working state of the delay switch; the low-level signal is received by the low-level trigger device of the delay switch module, and the low-level trigger device sends a control signal to the delay switch through the timing device to control the working state of the delay switch.

[0046] As the gear position of the car changes frequently, the output voltage of the car battery also changes. In order to make the delay switch module start correctly, the signal output from the voltage identification module to the delay switch module adopts the post-send priority mode, that is, within the set time period, the signal sent later has priority execution and has an impact within their respective timing cycles, as follows:

[0047] (1) When the delay switch in the delay switch module is in the on state, the voltage identification module sends a low-level signal to the delay switch module, the low-level trigger device of the delay switch module is triggered and sends a closing instruction to the delay switch through the timing device, and the closing instruction enters the timing state of the first set time period. At the same time, the delay switch sends a ready-to-close instruction to the on-board electronic device, and the on-board electronic device enters the shutdown preparation state.

[0048] If within the first set time period, the voltage identification module sends a high-level signal to the delay switch module based on the change in the output voltage of the car battery, the high-level trigger device in the delay switch module is triggered and sends an opening instruction to the delay switch through the timing device, and the opening instruction enters the timing state of the second set time period, and the delay switch sends an opening instruction to the vehicle-mounted electronic device. At this time, the high-level signal is a later signal and has priority execution, so the original closing instruction is released, and the timing of the first set time period is reset to zero, the delay switch continues to remain in the open state, and the shutdown preparation state of the vehicle-mounted electronic device is released.

[0049] (2) When the delay switch of the delay switch module is in the closed state, the voltage identification module sends a high-level signal to the delay switch module, the high-level trigger device of the delay switch module is triggered and sends an open command to the delay switch through the timing device, the open command enters the timing state of the second set time period, and at the same time, the delay switch sends a ready-to-start command to the on-board electronic device, and the on-board electronic device enters the power-on preparation state.

[0050] If, within the second set time period, the voltage identification module sends a low-level signal to the delay switch module based on the change in the output voltage of the car battery, the low-level trigger device in the delay switch module is triggered and sends a closing instruction to the delay switch through the timing device, and the closing instruction enters the timing state of the first set time period, and the delay switch sends a closing instruction to the on-board electronic device. At this time, the low-level signal is a later signal and has priority execution, so the original opening instruction is released, and the timing of the second set time period is reset to zero, the delay switch continues to remain in the closed state, and the power-on preparation state of the on-board electronic device is released.

[0051] In the present application, since the voltage required to start the vehicle-mounted electronic device alone is relatively small, the signal generated by the voltage identification module is mostly a low-level signal, and the voltage required to fully start the car is relatively large, and the signal generated by the voltage identification module is mostly a high-level signal. Therefore, according to actual needs, the time length of the first set time period for the low-level signal is less than the time length of the second set time period for the high-level signal.

[0052] The delay switch controls the vehicle-mounted electronic equipment as a delay control. If the timing of the first set time period or the second set time period is completed and there is still no subsequent signal, the current timing instruction will be executed.

[0053] Based on the above power supply structure, Figure 4 As shown, the startup modes of the car and the on-board electronic devices are as follows.

[0054] 1. When the car gear is in the LOCK position, the car is in a stopped state and the steering wheel is locked. Only the car controls used to control the vehicle body are powered on, such as the central lock, trunk light, car computer, etc. Other electrical appliances, including modified on-board electronic equipment, are turned off.

[0055] 2. When the vehicle gear is shifted to the ACC gear, the accessory relay is turned on, and some of the electronic devices with low power consumption among the vehicle's standard electronic devices are powered on.

[0056] 3. When the car gear is turned from ACC to ON, the power relay is turned on, and all electronic devices in the car except the modified on-board electronic devices are powered on, and the car enters the pre-starting preparation state. At the same time, the voltage identification module identifies the output voltage of the car battery and sends a high-level signal to the delay switch module. At this time, the on-board electronic devices are in the off state.

[0057] The high level trigger device of the delay switch module receives the high level signal, sends an opening instruction to the delay switch through the timing device, and the delay switch sends a ready-to-open instruction to the on-board electronic device and enters the timing state of the second set time period. At this time, the on-board electronic device is still in the off state.

[0058] 4. When the car gear is turned from ON to START, the starter relay is turned on, and the car engine (or car motor, the same below) starts. Since the car engine needs a large current to start, the output voltage of the car battery to the powered device or the on-board electronic equipment will drop instantly, which is often manifested as the lights in the car suddenly dimming or some electronic equipment turning off instantly. At this time, the output voltage recognized by the voltage identification module decreases, and a low-level signal is output to the delay switch module. The low-level trigger device of the delay switch module receives the low-level signal and sends a closing instruction to the delay switch through the timing device. This process is within the second set time period. Therefore, according to the rule that the later-sent signal is executed first, the original opening instruction is cancelled, the timing of the second set time period is reset, and the timing of the first set time period is turned on. The delay switch sends a closing preparation instruction to the on-board electronic equipment, and the on-board electronic equipment is still in the off state.

[0059] 5. After the car engine is started, the car battery voltage returns to normal, which is often manifested as the lights in the car turning from dark to bright or some electronic equipment restarting, and the car gear is also changed from START gear to ON gear. The voltage identification module re-identifies the output voltage of the car battery and sends a high-level signal to the delay switch module. The high-level trigger device of the delay switch module receives the high-level signal and sends an opening instruction to the delay switch through the timing device. The delay switch sends a ready-to-open instruction to the on-board electronic equipment and enters the timing state of the second set time period, canceling the timing of the first set time period. At this time, the on-board electronic equipment is still in the off state. If the car gear is not changed, that is, the car is completely started, then after the timing of the second set time period is completed, the delay switch connects the circuit between the on-board electronic equipment and the car battery, and the on-board electronic equipment starts.

[0060] Normally, the car gear will stay for a short time when shifting to each gear. The sum of the stay time and the time required to shift to the changed gear are both within the first set time period and the second set time period, so it will not affect the above-mentioned start mode. In addition, the first set time period and the second set time period can be changed and can be changed according to actual demand time.

[0061] When the car engine is working normally, the car battery is connected to the excitation current of the car engine rotor through the relay. This state is the external excitation state of the car generator. Subsequently, the car generator runs at high speed with the car engine. At this time, the electric energy output by the car generator is used for the electric equipment of the car, and the excess electric energy is used to charge the car battery. At this time, the car generator is in a self-excitation state, and the excitation current of the rotor of the car generator is provided by itself. When the car generator fully charges the car battery, the voltage regulator disconnects the excitation current of the rotor of the car generator, the car generator stops generating electricity, and the car battery provides power to the electronic equipment in the car. When the voltage in the car battery drops to a certain value, that is, when the internal power drops to a certain level, the voltage regulator reconnects the excitation current, and the car generator resumes power generation. Subsequently, during the normal operation of the car, the voltage regulator is adjusted to make the car generator repeat the above process continuously. In this way, the normal operation of the on-board electronic equipment is guaranteed, and the car battery can be kept above a certain power level. It can ensure that when the car is not started, there is still enough power to ensure the basic work of the car, such as the opening and closing of the door, which has a certain guarantee for protecting the safety of the driver.

[0062] According to the relationship between the power generation of the car battery and the car generator, the time required for the car generator to switch from the externally excited state to the self-excited state can be determined, which is recorded as the excitation time period. In order to ensure that the vehicle-mounted electronic equipment can start without the problem of input voltage sag, the second set time period is set to be longer than the excitation time period. In this way, after the second set time period, the car generator has entered the self-excited state, and the power of the vehicle-mounted electronic equipment is provided by the car generator, avoiding frequent switching on and off.

[0063] When the car stops running and the gear position of the car is changed from the ON gear position to the ACC gear position, the power relay connected to the ON gear position is turned off, the output end of the car battery is powered off, and the voltage identification module sends a low-level signal to the delay switch module. The low-level trigger device is triggered and sends a shutdown command to the delay switch, entering the timing state of the first set time period. At this time, the on-board electronic device receives the shutdown preparation command and enters the shutdown preparation state. At this time, the on-board electronic device starts to save the operating data. After the first set time period is completed, the on-board electronic device is turned off and no longer obtains power from the car battery.

[0064] During this process, the time for the on-board electronic equipment to be in the shutdown ready state for saving operating data must be less than the first set time period to prevent incomplete data preservation of the on-board electronic equipment. However, the time period should not be set too long, causing the on-board electronic equipment to consume excessive power from the car battery.

[0065] In this embodiment, the vehicle-mounted electronic equipment does not include the original electronic equipment that is standardly configured when the car leaves the factory, but only includes electronic equipment that is added to the car after the car leaves the factory, especially electronic display screens such as vehicle-mounted LED display screens, vehicle-mounted LCD display screens, and vehicle-mounted OLED display screens.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent power supply method for vehicle-mounted electronic equipment, characterized in that: The implementation process includes Step S1. Connecting the vehicle-mounted electronic device to the vehicle battery, and setting a delay switch module between the vehicle-mounted electronic device and the vehicle battery; Step S2. Mount a voltage identification module on the output end of the power relay in the ON position of the car; Step S3. Connecting the voltage identification module with the delay switch module, wherein the signal sent by the voltage identification module to the delay switch module adopts a post-transmission priority mode; The voltage identification module comprises a low-level identification terminal and a high-level identification terminal. The voltage identification module identifies the output voltage of the automobile battery. According to the output voltage of the automobile battery, the low-level identification terminal selectively sends a low-level signal to the delay switch module or the high-level identification terminal selectively sends a high-level signal to the delay switch module. The low-level signal causes the low-level trigger device of the delay switch module to trigger a closing instruction, and the high-level signal causes the high-level trigger device of the delay switch module to trigger an opening instruction. Car startup and startup modes of the on-board electronic devices: When the vehicle gear is in the LOCK gear position or the ACC gear position, the vehicle is in a stopped state, and the vehicle-mounted electronic device is in a turned-off state; When the gear of the vehicle is changed from the ACC gear to the ON gear, the power relay is turned on, the voltage identification module sends an opening instruction to the delay switch module, the delay switch of the delay switch module sends a ready-to-open instruction to the vehicle-mounted electronic device, and enters a timing state of a second set time period, and the vehicle-mounted electronic device is in a closed state; When the gear of the car is changed from the ON gear to the START gear, the start relay is turned on, the car engine is started, the voltage identification module sends a closing instruction to the delay switch module, and the delay switch of the delay switch module sends a ready-to-close instruction to the on-board electronic device, clears the timing of the second set time period and enters the timing state of the first set time period, and the on-board electronic device is in a closed state; When the car gear is also changed from the START gear to the ON gear, the car engine works normally, the voltage identification module sends a start instruction to the delay switch module, the delay switch of the delay switch module sends a ready to start instruction to the on-board electronic device, the timing of the first set time period is reset and enters the timing state of the second set time period, after the timing of the second set time period is completed, the delay switch connects the circuit between the on-board electronic device and the battery, and the on-board electronic device is started.

2. According to the intelligent power supply method of vehicle-mounted electronic equipment described in claim 1, it is characterized in that: The delay switch module includes a high-level trigger device, a low-level trigger device, a timing device and a delay switch. The high-level trigger device and the low-level trigger device are both connected to the delay switch through the timing device, and the vehicle-mounted electronic equipment is controlled by the delay switch.

3. According to the intelligent power supply method of vehicle-mounted electronic equipment described in claim 1, it is characterized in that: After the voltage identification module identifies the output voltage of the automobile battery, it sends a control instruction to the delay switch module. After the control instruction is received by the delay switch module, the delay switch module prepares to execute the control instruction and enters the timing state. Within the set timing time period, if the voltage identification module sends a control instruction to the delay switch module again, the delay switch module cancels the original control instruction, prepares to execute a new control instruction and enters the timing state again.

4. According to the intelligent power supply method of vehicle-mounted electronic equipment described in claim 1, it is characterized in that: The length of the first set time period is shorter than the length of the second set time period.

5. The intelligent power supply method for vehicle-mounted electronic equipment according to claim 1, characterized in that: The automobile generator is connected to the automobile battery and the vehicle-mounted electronic equipment. When the automobile engine works normally, the automobile generator starts to enter the self-excitation state, and at the same time, the automobile generator supplies energy to the automobile battery and the on-board electronic equipment until the automobile battery is fully charged, the voltage regulator disconnects the excitation current of the automobile generator, and the automobile generator stops generating electricity; During the operation of the car, the car generator continuously cycles: when the voltage of the car battery drops to a certain value, the voltage regulator reconnects the excitation current of the car generator, the car generator starts and resumes power generation, and at the same time charges the car battery and supplies power to the on-board electronic equipment. When the car battery is fully charged, the voltage regulator disconnects the excitation current of the car generator, and the car generator stops generating power until the next time the voltage of the car battery drops to a certain value.

6. The intelligent power supply method for vehicle-mounted electronic equipment according to claim 5, characterized in that: The time required for the automobile generator to switch from the externally excited state to the self-excited state is less than the second set time period of the delay switch module.

7. The intelligent power supply method for vehicle-mounted electronic equipment according to claim 1, characterized in that: When the car is turned off, the car gear is changed from the ON gear to the ACC gear, the power relay connected to the ON gear is turned off, the output end of the car battery is powered off, the voltage identification module sends a low level signal to the delay switch module, the delay switch module sends a shutdown preparation instruction to the vehicle-mounted electronic device and enters the timing state of the first set time period, the vehicle-mounted electronic device saves the operating data, and after the first set time period is completed, the vehicle-mounted electronic device is turned off.

8. The intelligent power supply method for vehicle-mounted electronic equipment according to claim 7, characterized in that: The time during which the vehicle-mounted electronic device is in the shutdown preparation state for storing the operation data is less than the first set time period.

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