Power control method, power control circuit, vehicle protection system and device

Abstract

The invention relates to a power control method, a power control circuit and a vehicle protection system and device. The method comprises the following steps: acquiring a control strategy of a working condition parameter of a target vehicle at the current moment and a decision result of an abnormal protection parameter; determining target output power corresponding to the target vehicle based on the control strategy and the decision result; and controlling a vehicle-mounted power supply in the target vehicle to carry out power output according to the target output power. By adopting the method, the output power of the vehicle-mounted power supply can be flexibly adjusted, the problems of over-discharge of a battery, overheating of an engine and the like are avoided, and normal operation of a vehicle and electronic equipment is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle-mounted power supply, and in particular to a power control method, a power control circuit, a vehicle protection system and a device. Background Art

[0002] The power output of the vehicle power management system is mainly to provide stable and reliable power supply for the vehicle's driving process and various electronic equipment on the vehicle.

[0003] In the related art, the vehicle power management system mainly determines the output signal of the vehicle power supply according to the battery voltage or load condition, and controls the output power of the vehicle power supply through the output signal.

[0004] However, the related technology cannot flexibly adjust the output power of the on-board power supply according to the vehicle status, resulting in problems such as battery over-discharge and engine overheating, affecting the normal operation of the vehicle and electronic equipment. Summary of the invention

[0005] Based on this, it is necessary to provide a power control method, a power control circuit, a vehicle protection system and a device to address the above-mentioned technical problems, which can flexibly adjust the output power of the vehicle power supply, avoid problems such as battery over-discharge and engine overheating, and ensure the normal operation of the vehicle and electronic equipment.

[0006] In a first aspect, the present application provides a power control method, comprising:

[0007] Obtain the control strategy of the target vehicle's operating parameters and the decision results of abnormal protection parameters at the current moment;

[0008] Based on the control strategy and decision results, determine the target output power corresponding to the target vehicle;

[0009] The on-board power supply in the target vehicle is controlled to output power according to the target output power.

[0010] In one embodiment, determining a target output power corresponding to a target vehicle based on a control strategy and a decision result includes:

[0011] When the decision result is to allow the vehicle-mounted power supply to output power, obtaining the allowed output level corresponding to the decision result;

[0012] Based on the output power level of the control strategy and the allowed output level corresponding to the decision result, the target output power corresponding to the target vehicle is determined.

[0013] In one embodiment, determining a target output power corresponding to the target vehicle based on the output power level of the control strategy and the allowable output level corresponding to the decision result includes:

[0014] If the allowed output level corresponding to the decision result is to allow the vehicle power supply to output power according to the output power level corresponding to the control strategy, the power corresponding to the output power level of the control strategy is used as the target output power corresponding to the target vehicle;

[0015] If the allowed output level corresponding to the decision result allows the vehicle power supply to output power at the next level of the output power level corresponding to the control strategy, the power corresponding to the next level of the output power level of the control strategy is used as the target output power corresponding to the target vehicle.

[0016] In one embodiment, the abnormal protection parameters include the vehicle battery voltage and coolant temperature, and the decision result includes at least one of the following:

[0017] When the vehicle battery voltage is within an abnormal voltage range, and / or the coolant temperature is within a severely abnormal temperature range, the decision result is to prohibit the vehicle power supply from outputting power;

[0018] When the vehicle battery voltage is not within the abnormal voltage range and the coolant temperature is within the non-serious abnormal voltage range, the decision result is to allow the vehicle power supply to output power at the next level of the output power level corresponding to the control strategy;

[0019] When the vehicle battery voltage is not within the abnormal voltage range and the coolant temperature is not within the abnormal temperature range, the decision result is to allow the vehicle power supply to output power according to the output power level corresponding to the control strategy; the abnormal temperature range includes a severe abnormal temperature range and a non-severe abnormal temperature range.

[0020] In one embodiment, the operating parameters include engine speed, throttle position and vehicle speed, and the control strategy of the operating parameters includes low power level, medium power level and high power level.

[0021] In one embodiment, the low power level meets the following conditions:

[0022] The engine speed is less than a first preset speed threshold, and the throttle position is less than a first position threshold.

[0023] In one embodiment, the medium power level meets the following conditions:

[0024] The engine speed is greater than or equal to the first preset speed threshold and less than the second preset speed threshold, the throttle position is greater than or equal to the first position threshold and less than the second position threshold, and the vehicle speed is less than the first speed threshold, or the engine speed is greater than or equal to the second preset speed threshold, the throttle position is greater than or equal to the second position threshold, and the vehicle speed is less than the second speed threshold;

[0025] Among them, the first preset speed threshold is smaller than the second preset speed threshold, the second position threshold is larger than the first position threshold, and the second speed threshold is smaller than the first speed threshold.

[0026] In one embodiment, the high power level meets the following conditions:

[0027] The engine speed is greater than or equal to a first preset speed threshold and less than a second preset speed threshold, the throttle position is greater than or equal to a first position threshold and less than a second position threshold, and the vehicle speed is greater than or equal to a first speed threshold, or the engine speed is greater than or equal to the second preset speed threshold, the throttle position is greater than or equal to a second position threshold, and the vehicle speed is greater than or equal to a second speed threshold.

[0028] In a second aspect, the present application further provides a power control circuit, which includes: a signal acquisition module, a control module and a power module, wherein the input end of the signal acquisition module is connected to the output interface of the target vehicle, the output end of the signal acquisition module is connected to the input end of the control module, and the output end of the control module is connected to the power module;

[0029] A signal acquisition module is used to collect the operating parameters and abnormal protection parameters of the target vehicle at the current moment through the output interface;

[0030] The control module is used to obtain the control strategy of the operating parameters of the target vehicle at the current moment and the decision results of the abnormal protection parameters; based on the control strategy and the decision results, determine the target output power corresponding to the target vehicle; and control the on-board power supply in the target vehicle to output power according to the target output power.

[0031] In one embodiment, the power control circuit further includes a transceiver module, the input end of the transceiver module is connected to the output end of the signal acquisition module, and the output end of the transceiver module is connected to the input end of the control module;

[0032] A control module, used for sending information collection instructions to a microcontroller of a target vehicle;

[0033] A signal acquisition module, used for receiving the current operating parameters and abnormal protection parameters output by the microcontroller through the output interface based on the information acquisition instruction;

[0034] The transceiver module is used to adjust the formats of the operating condition parameters and abnormal protection parameters, and send the adjusted operating condition parameters and abnormal protection parameters to the control module.

[0035] In a third aspect, the present application provides a vehicle protection system, the vehicle protection system comprising: a power control circuit and a target vehicle, the power control circuit being connected to the target vehicle;

[0036] The power control circuit is used to obtain the control strategy of the operating parameters of the target vehicle at the current moment and the decision results of the abnormal protection parameters; based on the control strategy and the decision results, determine the target output power corresponding to the target vehicle; and control the on-board power supply in the target vehicle to output power according to the target output power.

[0037] In a fourth aspect, the present application further provides a power control device, comprising:

[0038] An acquisition module is used to obtain the control strategy of the operating parameters of the target vehicle at the current moment and the decision results of the abnormal protection parameters;

[0039] A determination module, used for determining a target output power corresponding to a target vehicle based on a control strategy and a decision result;

[0040] The control module is used to control the on-board power supply in the target vehicle to output power according to the target output power.

[0041] In a fifth aspect, the present application further provides a controller, comprising a memory and a processor, wherein the memory stores a computer program, and the processor implements the content of any one of the embodiments of the above-mentioned power control method when executing the computer program.

[0042] In a sixth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, which implements the content of any one of the embodiments of the above-mentioned power control method when the computer program is executed by a processor.

[0043] In a seventh aspect, the present application further provides a computer program product, comprising a computer program, which, when executed by a processor, implements the content of any one of the embodiments of the above-mentioned power control method.

[0044] The above-mentioned power control method, power control circuit, vehicle protection system and device obtain the control strategy of the operating parameters of the target vehicle at the current moment and the decision results of the abnormal protection parameters; determine the target output power corresponding to the target vehicle based on the control strategy and the decision results; and control the on-board power supply in the target vehicle to output power according to the target output power. This method can accurately determine the target output power of the target vehicle by obtaining the control strategy of the operating parameters of the vehicle and the decision results of the abnormal protection parameters in real time, and then control the on-board power supply to output power according to the target output power based on the control strategy and the decision results. In other words, the purpose of flexibly adjusting the output power of the on-board power supply can be achieved by obtaining real-time parameter information, avoiding problems such as excessive discharge of the battery and overheating of the engine, ensuring the normal operation of the vehicle and electronic equipment, and meeting the power requirements of external equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0046] FIG1 is a diagram showing an application environment of a power control method according to an embodiment;

[0047] FIG2 is a schematic diagram of a flow chart of a power control method in one embodiment;

[0048] FIG3 is a schematic diagram of a flow chart of a power control method in one embodiment;

[0049] FIG4 is a schematic diagram of a flow chart of a power control method in one embodiment;

[0050] FIG5 is a schematic flow chart of a power control method in one embodiment;

[0051] FIG6 is a schematic diagram of a flow chart of a power control method in one embodiment;

[0052] FIG7 is a circuit diagram of a power control circuit in one embodiment;

[0053] FIG8 is a schematic diagram of the connection relationship of a CAN transceiver in one embodiment;

[0054] FIG9 is a block diagram of a power control device according to an embodiment;

[0055] FIG. 10 is a diagram showing the internal structure of a computer device in one embodiment.

[0056] Description of reference numerals:

[0057] 10: Power control circuit;

[0058] 101: signal acquisition module;

[0059] 102: control module;

[0060] 103: power module;

[0061] 104: transceiver module;

[0062] 20: Target vehicle. DETAILED DESCRIPTION

[0063] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application 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 application and are not used to limit the present application.

[0064] The power control method provided in the embodiment of the present application can be applied in the application environment as shown in Figure 1. The application environment includes a target vehicle and a controller, and the controller can be a server, a single-chip microcomputer, a microcontroller, etc. It should be noted that the controller is not a controller inside the target vehicle, but a device arranged outside the target vehicle for power control. The controller can determine the control strategy of the operating parameters and the decision results of the abnormal protection parameters in the target vehicle based on the operating parameters and abnormal protection parameters of the target vehicle at the current moment; obtain the target output power corresponding to the target vehicle based on the control strategy of the operating parameters and the decision results of the abnormal protection parameters; and control the on-board power supply in the target vehicle to output power according to the target output power.

[0065] In an exemplary embodiment, as shown in FIG2 , a power control method is provided, which is described by taking the method applied to the controller in FIG1 as an example, and includes the following steps 201 to 203. Among them:

[0066] S201, obtaining the control strategy of the operating parameters and the decision results of the abnormal protection parameters of the target vehicle at the current moment.

[0067] The target vehicle may be any vehicle driven by an on-board power supply, such as a sedan, off-road vehicle, bus, etc. The operating parameters of the target vehicle may include engine speed, throttle position, and vehicle speed, and the abnormal protection parameters of the target vehicle may include vehicle battery voltage and coolant temperature, etc.

[0068] In an embodiment of the present application, the controller can send a parameter acquisition instruction to the microcontroller of the target vehicle. After the microcontroller of the target vehicle receives the parameter acquisition instruction, the operating parameters and abnormal protection parameters of the target vehicle at the current moment can be sent to the controller. Alternatively, during the operation of the target vehicle, the operating parameters and abnormal protection parameters at any moment are stored in the memory. Therefore, the controller can obtain the operating parameters and abnormal protection parameters of the target vehicle at the current moment from the memory of the target vehicle based on the time mark of the current moment. The embodiment of the present application does not limit the method of obtaining the operating parameters and abnormal protection parameters of the target vehicle at the current moment.

[0069] Furthermore, the operating parameters at different times represent the operating conditions of the target vehicle at the current moment, and the control strategy of the target vehicle is also different under different operating conditions. The controller can compare the operating parameters at the current moment with the preset parameter threshold to determine the operating condition of the target vehicle at the current moment. And based on the mapping relationship between the operating condition of the target vehicle and the control strategy, determine the control strategy corresponding to each operating parameter of the target vehicle at the current moment. Alternatively, the controller can also send the operating parameters of the target vehicle at the current moment to a preset strategy determination model, analyze the operating parameters at the current moment through the strategy determination module, and determine the control strategy of each operating parameter on the target vehicle. Among them, the control strategy corresponding to the operating parameters can include low power level, medium power level and high power level output.

[0070] Similarly, the controller can also compare each abnormal protection parameter with a preset threshold value, and determine whether the target vehicle may have an abnormality based on the comparison result. If so, the decision result of determining the abnormal protection parameter is to stop the vehicle power supply from outputting power; if not, the decision result of determining the abnormal protection parameter is to allow the vehicle power supply to output power. Among them, the decision result of the abnormal protection parameter can be to stop output or allow output, and on the basis of allowing output, it can also be to allow normal output or allow adjustment of power output.

[0071] Assuming that the abnormal protection parameters include the vehicle battery voltage and coolant temperature, only when the vehicle battery voltage and coolant temperature meet the preset conditions, the decision result is to allow the vehicle power supply to output power. If either the vehicle battery voltage or the coolant temperature does not meet the preset conditions, the decision result is to stop the vehicle power supply from outputting power.

[0072] S202, determining a target output power corresponding to the target vehicle based on the control strategy and the decision result.

[0073] In the embodiment of the present application, since the decision result indicates whether the vehicle power supply performs power output and whether to adjust the power output, and the control strategy indicates the level of power output, the priority of the decision result should be greater than the priority of the control strategy. On this basis, the controller can first determine whether to perform power output and whether to adjust the power output according to the decision result. If it is determined that the vehicle power supply performs power output and does not adjust the power output, at this time, the power corresponding to the output power level corresponding to the control strategy can be used as the target output power corresponding to the target vehicle. If it is determined that the vehicle power supply performs power output and power adjustment is required, at this time, the controller can adjust the power corresponding to the output power level corresponding to the control strategy according to the power adjustment requirement, and use the adjusted power as the target output power corresponding to the target vehicle.

[0074] S203, controlling the on-board power supply in the target vehicle to output power according to the target output power.

[0075] In the embodiment of the present application, after obtaining the target output power of the target vehicle, the controller can generate a control signal for the power device in the vehicle power supply according to the target output power of the target vehicle, and control the switching frequency of the power device through the control signal to adjust the output power of the vehicle power supply so that the vehicle power supply outputs power according to the target output power.

[0076] In the above power control method, the control strategy of the operating parameters of the target vehicle at the current moment and the decision results of the abnormal protection parameters are obtained; based on the control strategy and the decision results, the target output power corresponding to the target vehicle is determined; and the on-board power supply in the target vehicle is controlled to output power according to the target output power. This method can accurately determine the target output power of the target vehicle by obtaining the control strategy of the operating parameters of the vehicle and the decision results of the abnormal protection parameters in real time, and then based on the control strategy and the decision results, control the on-board power supply to output power according to the target output power. In other words, by obtaining real-time parameter information, the purpose of flexibly adjusting the output power of the on-board power supply can be achieved, avoiding problems such as excessive discharge of the battery and overheating of the engine, ensuring the normal operation of the vehicle and electronic equipment, and meeting the power requirements of external equipment.

[0077] Next, a specific process of obtaining the target output power corresponding to the target vehicle is introduced through an embodiment. As shown in FIG3 , a specific process of determining the target output power corresponding to the target vehicle based on the control strategy and the decision result is introduced. The specific process includes:

[0078] S301, when the decision result is to allow the vehicle-mounted power supply to output power, obtain the allowed output level corresponding to the decision result.

[0079] In an embodiment of the present application, when the decision result of determining the abnormal protection parameter is to allow the vehicle power supply to output power, the controller can obtain the target abnormal protection parameter for determining the output level from the abnormal protection parameter. For example, the target abnormal protection parameter can be the coolant temperature. The coolant temperature is then compared with the preset threshold value, and it is determined whether the coolant temperature is slightly abnormal based on the comparison result. If it is determined to be slightly abnormal, the power output level needs to be downgraded, that is, the allowed output level corresponding to the decision result is the next level of the output power level of the control strategy. If it is determined that there is no abnormality, there is no need to reduce the power output level, and the allowed output level corresponding to the decision result is the allowed output level corresponding to the decision result.

[0080] S302, determining a target output power corresponding to the target vehicle based on the output power level of the control strategy and the allowable output level corresponding to the decision result.

[0081] In the embodiment of the present application, if the allowed output level corresponding to the decision result is the output level according to the control strategy, the controller can use the power corresponding to the output power level of the control strategy as the target output power corresponding to the target vehicle. If the allowed output level corresponding to the decision result is a level adjustment of the output level of the control strategy, the controller can use the power corresponding to the output power level after the level adjustment as the target output power corresponding to the target vehicle.

[0082] In the above power control method, when the decision result is to allow the vehicle power supply to output power, the allowed output level corresponding to the decision result is obtained; based on the output power level of the control strategy and the allowed output level corresponding to the decision result, the target output power corresponding to the target vehicle is determined. This method can obtain the allowed output level corresponding to the decision result through the decision result of the abnormal protection parameter, and can accurately judge the target power level based on the allowed output level and the output power level of the control strategy, so as to accurately determine the target output power corresponding to the target vehicle.

[0083] In one embodiment, as shown in FIG. 4 , the specific content of determining the target output power corresponding to the target vehicle based on the output power level of the control strategy and the allowed output level corresponding to the decision result is introduced, and the specific content includes:

[0084] S401, if the allowed output level corresponding to the decision result is to allow the vehicle power supply to output power according to the output power level corresponding to the control strategy, the power corresponding to the output power level of the control strategy is used as the target output power corresponding to the target vehicle.

[0085] In an embodiment of the present application, if the decision result is to output power according to the output power level corresponding to the control strategy, the controller can obtain the power corresponding to the output power level corresponding to the control strategy, and use the power as the target output power corresponding to the target vehicle.

[0086] S402, if the allowed output level corresponding to the decision result is to allow the vehicle power supply to output power at the next level of the output power level corresponding to the control strategy, the power corresponding to the next level of the output power level of the control strategy is used as the target output power corresponding to the target vehicle.

[0087] In an embodiment of the present application, if the decision result is determined to output power at the next level of the output power level corresponding to the control strategy, after the controller obtains the output power level corresponding to the control strategy, it can calculate the power of the next level of the output power level and use the next level of power as the target output power corresponding to the target vehicle.

[0088] In the above power control method, if the allowed output level corresponding to the decision result is to allow the on-board power supply to output power according to the output power level corresponding to the control strategy, the power corresponding to the output power level of the control strategy is used as the target output power corresponding to the target vehicle; if the allowed output level corresponding to the decision result is to allow the on-board power supply to output power according to the next level of the output power level corresponding to the control strategy, the power corresponding to the next level of the output power level of the control strategy is used as the target output power corresponding to the target vehicle. This method can accurately determine that the target vehicle outputs power according to the output power level or the next level corresponding to the control strategy through the allowed output level of the decision result, so that the target output power corresponding to the target vehicle can be accurately obtained based on the output power level or the next level corresponding to the control strategy.

[0089] In one embodiment, the abnormal protection parameters include the vehicle battery voltage and the coolant temperature, and the decision result includes at least one of the following:

[0090] When the vehicle battery voltage is within an abnormal voltage range, and / or the coolant temperature is within a severely abnormal temperature range, the decision result is to prohibit the vehicle power supply from outputting power;

[0091] When the vehicle battery voltage is not within the abnormal voltage range and the coolant temperature is within the non-serious abnormal voltage range, the decision result is to allow the vehicle power supply to output power at the next level of the output power level corresponding to the control strategy;

[0092] When the vehicle battery voltage is not within the abnormal voltage range and the coolant temperature is not within the abnormal temperature range, the decision result is to allow the vehicle power supply to output power according to the output power level corresponding to the control strategy; the abnormal temperature range includes a severe abnormal temperature range and a non-severe abnormal temperature range.

[0093] Exemplarily, taking the abnormal protection parameter as the vehicle battery voltage, the abnormal voltage range refers to a voltage greater than 14.5V or less than 12V. Specifically, if the vehicle battery voltage is less than 12V, it means that the on-board power supply of the target vehicle may be over-discharging. At this time, the corresponding control strategy may be: stop output to prevent the on-board power supply from over-discharging. If the vehicle battery voltage is between 12V-14.5V, it means that the on-board power supply of the target vehicle is discharging normally. At this time, the corresponding control strategy may be: allow output, and make a judgment in combination with the control strategy of the operating condition parameters. If the vehicle battery voltage is greater than 14.5V, it means that the on-board power supply of the target vehicle may be overcharged. At this time, the corresponding control strategy may be: stop output to prevent the battery from overcharging. The relationship between the vehicle battery voltage and the decision result can be shown in Table 1.

[0094] Table 1

[0095]

[0096] Taking the abnormal protection parameter as the coolant temperature as an example, the severe abnormal temperature range is less than 105°C, the non-severe abnormal voltage range is greater than 95°C and less than or equal to 105°C, and not being in the abnormal temperature range means that the temperature is less than or equal to 95°C. If the coolant temperature is less than or equal to 95°C, it means that the engine is working normally. At this time, the corresponding decision result can be to keep the output power of the vehicle power supply unchanged. If the coolant temperature is greater than 95°C and less than or equal to 105°C, it means that the engine is slightly hot. At this time, the corresponding decision result can be to reduce the power of the vehicle power supply by one level. If the coolant temperature is greater than 105°C, it means that the engine is overheated. At this time, the corresponding decision result can be to immediately stop the output of the vehicle power supply to prevent the engine from overheating. The relationship between the coolant temperature and the decision result can be shown in Table 2.

[0097] Table 2

[0098]

[0099] The above embodiments are explanations of various situations of decision results. In the process of determining the decision results, the vehicle battery voltage and coolant temperature can be judged at the same time, and the decision results can be determined according to the judgment results. Alternatively, the decision results can also be determined according to a certain priority order. For example, the priority order of the vehicle battery voltage is higher than the priority order of the coolant temperature. And the target output power of the target vehicle is determined based on the decision result. Next, the specific process of determining the decision result according to a certain priority order is explained through an embodiment, as shown in Figure 5, and the specific content includes the following steps:

[0100] S501, determining whether the decision result of the vehicle battery voltage is to allow output power.

[0101] In the embodiment of the present application, when the vehicle battery voltage is too large or too small, it indicates that the vehicle battery voltage may be over-discharged or over-charged. At this time, it is necessary to control the vehicle power supply to prohibit output power. When the vehicle battery voltage is not in the abnormal voltage range, it indicates that the vehicle battery voltage is normal. At this time, it is sufficient to control the vehicle power supply to output power normally. Based on this, the controller can determine whether the vehicle battery voltage is in the abnormal voltage range. If not, the decision result of the vehicle battery voltage is determined to allow output power; if so, the decision result of the vehicle battery voltage is determined to not allow output power.

[0102] S502: If the decision result of the vehicle battery voltage is the allowable output power, determine whether the decision result of the coolant temperature is the allowable output power.

[0103] In the embodiment of the present application, when the coolant temperature is too high, the engine will be at risk of overheating. At this time, it is necessary to control the vehicle power supply to prohibit output power. Therefore, when the decision result of determining the vehicle battery voltage is to allow output power, the controller can continue to judge the coolant temperature to determine whether the coolant temperature is too high, and then determine whether the decision result is to allow output power based on the judgment result. Specifically, if the coolant temperature is too high, the decision result is determined to be not allowing output power; if the coolant temperature is not too high, the decision result is determined to be allowing output power.

[0104] S503: If the decision result of the coolant temperature is the allowable output power, the allowable output level corresponding to the decision result is obtained.

[0105] In an embodiment of the present application, when it is determined that the control strategy for the coolant temperature is to allow output power, it can be further determined whether the coolant temperature is normal. If the coolant temperature is normal, the allowable output level corresponding to the decision result is determined to allow the vehicle power supply to output power according to the output power level corresponding to the control strategy; if the coolant temperature is slightly abnormal, the allowable output level corresponding to the decision result is determined to allow the vehicle power supply to output power according to the next level of the output power level corresponding to the control strategy.

[0106] In the above power control method, it is determined whether the decision result of the vehicle battery voltage is the allowed output power; if the decision result of the vehicle battery voltage is the allowed output power, it is determined whether the decision result of the coolant temperature is the allowed output power; if the decision result of the coolant temperature is the allowed output power, the allowed output level corresponding to the decision result is obtained. This method judges the vehicle battery voltage and coolant temperature in order of priority of the vehicle battery voltage and coolant temperature, and can limit the calculation range of the output power. And when the control strategies of the vehicle battery voltage and coolant temperature are both to allow output power, the allowed output level corresponding to the decision result is accurately obtained.

[0107] In one embodiment, the operating parameters include engine speed, throttle position and vehicle speed, and the control strategy for the operating parameters includes a low power level, a medium power level and a high power level.

[0108] Among them, the low power level corresponds to low power output (for example, 30%), which is suitable for low-load conditions such as idling and low-speed gliding, and can avoid overloading the target vehicle's power system. The medium power level corresponds to medium power output (for example, 80%), which is suitable for the vehicle in normal driving state, and the engine and generator can provide stable power supply. The high power level corresponds to high power output, which is suitable for high speed or high speed conditions, and the generator can provide sufficient power to meet the maximum power demand of external equipment.

[0109] Next, the conditions satisfied by the low power level, the medium power level, and the high power level are described respectively.

[0110] For the low power level, when the engine speed is less than the first preset speed threshold and the throttle position is less than the first position threshold, the control strategy corresponding to the operating condition parameters is low power level output.

[0111] For the medium power level, the engine speed is greater than or equal to the first preset speed threshold and less than the second preset speed threshold, the throttle position is greater than or equal to the first position threshold and less than the second position threshold, and the vehicle speed is less than the first speed threshold, or the engine speed is greater than or equal to the second preset speed threshold, the throttle position is greater than or equal to the second position threshold, and the vehicle speed is less than the second speed threshold;

[0112] The first preset speed threshold is less than the second preset speed threshold, the second position threshold is greater than the first position threshold, and the second speed threshold is less than the first speed threshold. The control strategy corresponding to the operating condition parameters is medium power level output.

[0113] For the high power level, the engine speed is greater than or equal to the first preset speed threshold and less than the second preset speed threshold, the throttle position is greater than or equal to the first position threshold and less than the second position threshold, and the vehicle speed is greater than or equal to the first speed threshold, or the engine speed is greater than or equal to the second preset speed threshold, the throttle position is greater than or equal to the second position threshold, and the vehicle speed is greater than or equal to the second speed threshold. The control strategy corresponding to the operating condition parameters is high power level output.

[0114] For example, with the first preset speed threshold being 1000, the second preset speed threshold being 3000, the first position threshold being 5%, the second position threshold being 40%, the first speed threshold being 30, and the second speed threshold being 100, the output power level and control strategy corresponding to the vehicle's operating parameters can be seen in Table 3.

[0115] Table 3

[0116]

[0117] In one case, the target output power corresponding to the target vehicle is zero, that is, the vehicle-mounted power supply does not output. Then, the situation is described in detail through an embodiment, and the method further includes:

[0118] When the decision result of the vehicle battery voltage is that the output power is not allowed, or when the coolant temperature is at a severely abnormal level, the target output power corresponding to the target vehicle is determined to be zero.

[0119] In the embodiment of the present application, referring to the contents of Table 1 and Table 2, when the vehicle battery voltage is too large or too small, the on-board power supply in the target vehicle may be overcharged or over-discharged. When the coolant temperature is at a serious abnormal level, the engine may be overheated. In these two cases, the controller can set the target output power corresponding to the target vehicle to zero to control the on-board power supply not to output and ensure the safety of the target vehicle.

[0120] In the above power control method, when the decision result of the vehicle battery voltage is that the output power is not allowed, or the coolant temperature is at a serious abnormal level, the target output power corresponding to the target vehicle is determined to be zero. This method can accurately determine whether the target vehicle has an abnormal risk by judging the vehicle battery voltage and coolant temperature, and when it is determined that there is an abnormal risk, the target output power is set to zero.

[0121] As a specific embodiment of the present application, the power control process is described in detail below. In one embodiment, as shown in FIG6 , the power control method includes:

[0122] S601, obtaining the vehicle battery voltage, coolant temperature and operating parameters of the target vehicle at the current moment;

[0123] S602, determining whether the control strategy of the vehicle battery voltage is to allow output power, if so, executing S603, if not, executing S604;

[0124] S603, determining whether the coolant temperature is abnormal, if it is abnormal, executing S605, if it is not abnormal, executing S606;

[0125] S604: Control the onboard power supply of the target vehicle to not output;

[0126] S605, determining whether the coolant temperature is seriously abnormal, if so, executing S604, if just abnormal, continuing to execute S607;

[0127] S606, using the output power corresponding to the control strategy of the operating condition parameter as the target output power corresponding to the target vehicle;

[0128] S607, obtaining an output power level corresponding to the control strategy of the operating condition parameter, and taking the output power of the next level of the output power level as the target output power corresponding to the target vehicle.

[0129] It should be understood that, although the steps in the flowcharts involved in the above embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above embodiments may include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0130] Based on the same inventive concept, the embodiment of the present application also provides a power control circuit for implementing the power control method involved above. The implementation scheme for solving the problem provided by the power control circuit is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more power control circuit embodiments provided below can refer to the limitations on the power control method above, and will not be repeated here.

[0131] In one embodiment, the present application further provides a power control circuit 10, as shown in FIG7, the power control circuit 10 comprises: a signal acquisition module 101, a control module 102 and a power module 103, the input end of the signal acquisition module 101 is connected to the output interface of the target vehicle 20, the output end of the signal acquisition module 101 is connected to the input end of the control module 102, and the output end of the control module 102 is connected to the power module 103;

[0132] The signal acquisition module 101 is used to collect the operating parameters and abnormal protection parameters of the target vehicle 20 at the current moment through the output interface;

[0133] The control module 102 is used to determine the target output power corresponding to the target vehicle 20 based on the control strategy of the operating parameters of the target vehicle 20 at the current moment and the decision results of the abnormal protection parameters; based on the control strategy and the decision results, control the on-board power supply in the target vehicle 20 to output power according to the target output power.

[0134] Among them, the output interface of the target vehicle 20 can be an On-Board Diagnostics II (OBD-II) interface, which provides a vehicle operation status signal. The main pin connections of the OBD-II interface are as follows: Pin 6 (CAN-H) is connected to the high level of the CAN bus. Pin 14 (CAN-L) is connected to the low level of the CAN bus. Pin 16 provides 12V power for the system. Pins 4 and 5 are grounded. The specific contents of the parameters related to the OBD-II interface are shown in Table 4.

[0135] Table 4

[0136]

[0137] In the embodiment of the present application, the signal acquisition module 101 can be connected to the target vehicle 20 through the output interface of the target vehicle 20, and receive the operating parameters and abnormal protection parameters of the target vehicle 20 at the current moment through the output interface, and after receiving the operating parameters and abnormal protection parameters, send these operating parameters and abnormal protection parameters to the control module 102. The control module 102 can determine the target output power of the power module 103 based on these operating parameters and abnormal protection parameters, and control the power module 103 to output power according to the target output power. Among them, the control module 102 can be, but is not limited to, a single-chip microcomputer, a pulse width modulation (PWM) control chip, a control integrated circuit (IC), a voltage reference source, a phase locked loop (PLL) control chip, a current detection chip, a metal-oxide-semiconductor field-effect transistor (MOSFET) driver chip, etc.

[0138] The power module 103 may include a direct current-to-direct current (DC-DC) converter or a direct current-to-alternating current (DC-AC) converter. The DC-DC converter and the DC-AC converter are respectively introduced below.

[0139] The DC-DC converter includes: a resonant converter, a transformer, and a rectifier filter circuit, wherein the inverter bridge is composed of four metal oxide semiconductor field effect transistors (MOSFET) forming an H-bridge structure, which is used to convert DC power into a high-frequency AC signal. The resonant converter includes a resonant inductor and a capacitor, and a voltage conversion is generated through the resonant converter. The transformer is used to achieve a boost or buck function by transferring the voltage between the primary winding and the secondary winding through a high-frequency signal. The rectifier filter circuit is used to rectify the high-frequency AC power of the secondary transformer into DC power, and output a stable DC power through a filter capacitor.

[0140] The resonant converter can be an LLC resonant converter. The LLC resonant converter is a topology commonly used for efficient DC-DC conversion and has excellent soft switching characteristics. It includes a boost mode and a buck mode. In the boost mode, when the input voltage is lower than the target output voltage, the LLC converter converts the low voltage to high voltage through the resonant boost function and outputs a stable target voltage. In the buck mode, when the input voltage is higher than the target output voltage, the LLC converter achieves efficient conversion from high voltage to low voltage by adjusting the operating frequency. Wide input voltage range: Regardless of the input voltage between 12V and 24V, the LLC converter can maintain efficient voltage conversion to ensure the power supply requirements of external devices.

[0141] The DC-AC converter consists of four MOSFETs forming a full-bridge circuit and an LC filter circuit. The full-bridge circuit is used to control the positive and negative cycles of DC power. The LC filter circuit is used to smooth the pulse width modulation (PWM) waveform to obtain a sine wave output. The DC-AC inverter is used to convert DC power into 220V or 110V AC power for external devices that require AC power. The module adopts a full-bridge inverter topology and controls the MOSFET through the sine wave pulse width modulation (SPWM) signal generated by the microcontroller to ensure that the output voltage is a pure sine wave.

[0142] The power control circuit 10 comprises: a signal acquisition module 101, a control module 102 and a power module 103, wherein the input end of the signal acquisition module 101 is connected to the output interface of the target vehicle 20, the output end of the signal acquisition module 101 is connected to the input end of the control module 102, and the output end of the control module 102 is connected to the power module 103; the signal acquisition module 101 is used to acquire the operating parameters and abnormal protection parameters of the target vehicle 20 at the current moment through the output interface; the control module 102 is used to determine the control strategy for different operating parameters in the target vehicle 20 based on the operating parameters and abnormal protection parameters of the target vehicle 20 at the current moment; based on the control strategy and the decision result, determine the target output power corresponding to the target vehicle 20; and control the on-board power supply in the target vehicle 20 to output power according to the target output power. By connecting the signal acquisition module 101 to the target vehicle 20, the operating parameters and abnormal protection parameters of the vehicle can be obtained in real time, and then the control module 102 can accurately determine the control strategy of the operating parameters and the decision results of the abnormal protection parameters in the target vehicle 20 based on the real-time information obtained, and then accurately determine the target output power of the target vehicle 20 based on the control strategy of the operating parameters and the decision results of the abnormal protection parameters, so as to control the vehicle power supply to output power according to the target output power. In other words, by obtaining real-time parameter information, the purpose of flexibly adjusting the output power of the vehicle power supply can be achieved, avoiding problems such as excessive discharge of the battery and overheating of the engine, ensuring the normal operation of the vehicle and electronic equipment, and meeting the power requirements of external equipment.

[0143] In one embodiment, as shown in FIG. 7 , the power control circuit 10 further includes a transceiver module 104 , the input end of the transceiver module 104 is connected to the output end of the signal acquisition module 101 , and the output end of the transceiver module 104 is connected to the input end of the control module 102 ;

[0144] The control module 102 is used to send information collection instructions to the microcontroller of the target vehicle 20;

[0145] The signal acquisition module 101 is used to receive the current operating parameters and abnormal protection parameters output by the microcontroller through the output interface based on the information acquisition instruction;

[0146] The transceiver module 104 is used to adjust the formats of the operating condition parameters and the abnormal protection parameters, and send the adjusted operating condition parameters and the abnormal protection parameters to the control module 102 .

[0147] In the embodiment of the present application, when the output power of the vehicle power supply of the target vehicle 20 needs to be adjusted, the single-chip microcomputer sends an information collection instruction to the microcontroller of the target vehicle 20, and the microcontroller sends the operating status information of the target vehicle 20 at the current moment to the transceiver module 104 through the output port. The transceiver module 104 can be a CAN transceiver, and its model can be MCP2551 or TJA1050. The CAN transceiver is mainly responsible for converting the CAN signal of the OBD-II interface into a transistor-transistor logic (Transistor-Transistor Logic, TTL) level signal that can be processed by the control module 102, and receiving and sending. The specific circuit of the CAN transceiver includes: CAN-H and CAN-L are respectively connected to the corresponding pins (pin 6 and pin 14) of the OBD-II interface, the TXD pin of the CAN transceiver is connected to the CAN transmitting end of the single-chip microcomputer, and the RXD pin is connected to the CAN receiving end of the single-chip microcomputer. The power input is a 12V voltage provided by the OBD-II interface, which is converted into the 3.3V or 5V working voltage required by the transceiver through a voltage regulator.

[0148] FIG8 is a schematic diagram of the connection relationship of the CAN transceiver. The input end of the CAN transceiver is connected to the target vehicle 20 via the OBD-II interface, and the output end is connected to the control module 102 .

[0149] The power control circuit 10 further includes a transceiver module 104, the input end of the transceiver module 104 is connected to the output end of the signal acquisition module 101, and the output end of the transceiver module 104 is connected to the input end of the control module 102; the control module 102 is used to send information acquisition instructions to the microcontroller of the target vehicle 20; the signal acquisition module 101 is used to receive the operating parameters and abnormal protection parameters at the current moment output by the microcontroller through the output interface based on the information acquisition instructions; the transceiver module 104 is used to adjust the format of the operating parameters and abnormal protection parameters, and send the adjusted operating parameters and abnormal protection parameters to the control module 102. After the operating parameters and abnormal protection parameters of the target vehicle 20 at the current moment are collected through the output interface, the formats of the operating parameters and abnormal protection parameters are adjusted by using the transceiver module 104 so that the adjusted operating parameters and abnormal protection parameters can be applied to the control process of the control module 102.

[0150] In one embodiment, a vehicle protection system is also provided, the vehicle protection system comprising: a power control circuit 10 and a target vehicle 20, the power control circuit 10 being connected to the target vehicle 20;

[0151] The power control circuit 10 is used to determine the target output power corresponding to the target vehicle 20 based on the control strategy of the operating parameters of the target vehicle 20 at the current moment and the decision result of the abnormal protection parameters; based on the control strategy and the decision result, control the on-board power supply in the target vehicle 20 to output power according to the target output power.

[0152] Based on the same inventive concept, the embodiment of the present application also provides a power control device for implementing the power control method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more power control device embodiments provided below can refer to the limitations on the power control method above, and will not be repeated here.

[0153] In an exemplary embodiment, as shown in FIG9 , a power control device is provided, including: an acquisition module 11, a determination module 12 and a control module 13, wherein:

[0154] An acquisition module 11 is used to acquire the control strategy of the operating parameters and the decision result of the abnormal protection parameters of the target vehicle at the current moment;

[0155] Among them, the abnormal protection parameters include the vehicle battery voltage and coolant temperature, and the decision result includes at least one of the following:

[0156] When the vehicle battery voltage is within an abnormal voltage range, and / or the coolant temperature is within a severely abnormal temperature range, the decision result is to prohibit the vehicle power supply from outputting power;

[0157] When the vehicle battery voltage is not within the abnormal voltage range and the coolant temperature is within the non-serious abnormal voltage range, the decision result is to allow the vehicle power supply to output power at the next level of the output power level corresponding to the control strategy;

[0158] When the vehicle battery voltage is not within the abnormal voltage range and the coolant temperature is not within the abnormal temperature range, the decision result is to allow the vehicle power supply to output power according to the output power level corresponding to the control strategy; the abnormal temperature range includes the severe abnormal temperature range and the non-severe abnormal temperature range;

[0159] The operating parameters include engine speed, throttle position and vehicle speed, and the control strategies of the operating parameters include low power level, medium power level and high power level;

[0160] The low power level meets the following conditions:

[0161] The engine speed is less than a first preset speed threshold, and the throttle position is less than a first position threshold;

[0162] The medium power level meets the following conditions:

[0163] The engine speed is greater than or equal to the first preset speed threshold and less than the second preset speed threshold, the throttle position is greater than or equal to the first position threshold and less than the second position threshold, and the vehicle speed is less than the first speed threshold, or the engine speed is greater than or equal to the second preset speed threshold, the throttle position is greater than or equal to the second position threshold, and the vehicle speed is less than the second speed threshold;

[0164] Wherein, the first preset speed threshold is less than the second preset speed threshold, the second position threshold is greater than the first position threshold, and the second speed threshold is less than the first speed threshold;

[0165] The high power level meets the following conditions:

[0166] The engine speed is greater than or equal to the first preset speed threshold and less than the second preset speed threshold, the throttle position is greater than or equal to the first position threshold and less than the second position threshold, and the vehicle speed is greater than or equal to the first speed threshold, or the engine speed is greater than or equal to the second preset speed threshold, the throttle position is greater than or equal to the second position threshold, and the vehicle speed is greater than or equal to the second speed threshold;

[0167] A determination module 12, for determining a target output power corresponding to the target vehicle based on the control strategy and the decision result;

[0168] The control module 13 is used to control the on-board power supply in the target vehicle to output power according to the target output power.

[0169] In an exemplary embodiment, the above-mentioned determination module includes: an acquisition unit and a determination unit, wherein:

[0170] An acquisition unit, used to acquire the permitted output level corresponding to the decision result when the decision result is to allow the vehicle-mounted power supply to output power;

[0171] The determination unit is used to determine the target output power corresponding to the target vehicle based on the output power level of the control strategy and the allowed output level corresponding to the decision result.

[0172] In an exemplary embodiment, the determination unit is further configured to, when the allowed output level corresponding to the decision result is to allow the vehicle-mounted power supply to output power according to the output power level corresponding to the control strategy, use the power corresponding to the output power level of the control strategy as the target output power corresponding to the target vehicle;

[0173] When the allowed output level corresponding to the decision result allows the vehicle power supply to output power at the next level of the output power level corresponding to the control strategy, the power corresponding to the next level of the output power level of the control strategy is used as the target output power corresponding to the target vehicle.

[0174] Each module in the above power control device can be implemented in whole or in part by software, hardware or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each module.

[0175] In an exemplary embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be shown in FIG10. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. The processor, the memory and the input / output interface are connected via a system bus, and the communication interface is connected to the system bus via the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store power control data. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal via a network connection. When the computer program is executed by the processor, a power control method is implemented.

[0176] Those skilled in the art will understand that the structure shown in FIG. 10 is merely a block diagram of a partial structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different arrangement of components.

[0177] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the content of any one embodiment of the above power control method when executing the computer program.

[0178] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the content of any one embodiment of the above power control method is implemented.

[0179] In one embodiment, a computer program product is provided, comprising a computer program, wherein when the computer program is executed by a processor, the content of any one embodiment of the power control method described above is implemented.

[0180] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0181] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0182] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0183] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A power control method, characterized in that: The method comprises: Obtain the control strategy of the target vehicle's operating parameters and the decision results of abnormal protection parameters at the current moment; Based on the control strategy and the decision result, determining a target output power corresponding to the target vehicle; The on-board power supply in the target vehicle is controlled to output power according to the target output power.

2. The method according to claim 1, characterized in that: The determining the target output power corresponding to the target vehicle based on the control strategy and the decision result includes: When the decision result is to allow the vehicle-mounted power supply to output power, obtaining the allowed output level corresponding to the decision result; Based on the output power level of the control strategy and the allowed output level corresponding to the decision result, the target output power corresponding to the target vehicle is determined.

3. The method according to claim 2, characterized in that The step of determining the target output power corresponding to the target vehicle based on the output power level of the control strategy and the allowable output level corresponding to the decision result includes: If the allowed output level corresponding to the decision result is to allow the on-board power supply to output power according to the output power level corresponding to the control strategy, the power corresponding to the output power level of the control strategy is used as the target output power corresponding to the target vehicle; If the allowed output level corresponding to the decision result allows the vehicle power supply to output power at the next level of the output power level corresponding to the control strategy, the power corresponding to the next level of the output power level of the control strategy is used as the target output power corresponding to the target vehicle.

4. The method according to claim 3, characterized in that The abnormal protection parameters include the vehicle battery voltage and coolant temperature, and the decision result includes at least one of the following: When the vehicle battery voltage is within an abnormal voltage range, and / or the coolant temperature is within a severely abnormal temperature range, the decision result is to prohibit the vehicle power supply from outputting power; When the vehicle battery voltage is not within the abnormal voltage range and the coolant temperature is within the non-serious abnormal voltage range, the decision result is to allow the vehicle power supply to output power at the next level of the output power level corresponding to the control strategy; When the vehicle battery voltage is not within the abnormal voltage range and the coolant temperature is not within the abnormal temperature range, the decision result is to allow the vehicle power supply to output power according to the output power level corresponding to the control strategy; the abnormal temperature range includes the severe abnormal temperature range and the non-severe abnormal temperature range.

5. The method according to any one of claims 1 to 4, characterized in that: The operating parameters include engine speed, throttle position and vehicle speed, and the control strategies for the operating parameters include low power level, medium power level and high power level.

6. The method according to claim 5, characterized in that The low power level meets the following conditions: The engine speed is less than a first preset speed threshold, and the throttle position is less than a first position threshold.

7. The method according to claim 5, characterized in that The medium power level meets the following conditions: The engine speed is greater than or equal to a first preset speed threshold and less than a second preset speed threshold, the throttle position is greater than or equal to a first position threshold and less than a second position threshold, and the vehicle speed is less than a first speed threshold, or the engine speed is greater than or equal to a second preset speed threshold, the throttle position is greater than or equal to the second position threshold, and the vehicle speed is less than a second speed threshold; Among them, the first preset speed threshold is smaller than the second preset speed threshold, the second position threshold is larger than the first position threshold, and the second speed threshold is smaller than the first speed threshold.

8. The method according to claim 5, characterized in that The high power level meets the following conditions: The engine speed is greater than or equal to a first preset speed threshold and less than a second preset speed threshold, the throttle position is greater than or equal to a first position threshold and less than a second position threshold, and the vehicle speed is greater than or equal to a first speed threshold, or the engine speed is greater than or equal to the second preset speed threshold, the throttle position is greater than or equal to the second position threshold, and the vehicle speed is greater than or equal to a second speed threshold.

9. A power control circuit, characterized in that: The power control circuit comprises: a signal acquisition module, a control module and a power module, wherein the input end of the signal acquisition module is connected to the output interface of the target vehicle, the output end of the signal acquisition module is connected to the input end of the control module, and the output end of the control module is connected to the power module; The signal acquisition module is used to collect the operating parameters and abnormal protection parameters of the target vehicle at the current moment through the output interface; The control module is used to obtain the control strategy of the operating parameters of the target vehicle at the current moment and the decision result of the abnormal protection parameter; determine the target output power corresponding to the target vehicle based on the control strategy and the decision result; and control the on-board power supply in the target vehicle to output power according to the target output power.

10. The circuit according to claim 9, characterized in that The power control circuit further comprises a transceiver module, the input end of the transceiver module is connected to the output end of the signal acquisition module, and the output end of the transceiver module is connected to the input end of the control module; The control module is used to send an information collection instruction to the microcontroller of the target vehicle; The signal acquisition module is used to receive the current operating parameters and abnormal protection parameters output by the microcontroller through the output interface based on the information acquisition instruction; The transceiver module is used to adjust the formats of the operating condition parameters and the abnormal protection parameters, and send the adjusted operating condition parameters and abnormal protection parameters to the control module.

11. A vehicle protection system, characterized in that: The vehicle protection system comprises: a power control circuit and a target vehicle, wherein the power control circuit is connected to the target vehicle; The power control circuit is used to obtain the control strategy of the operating parameters of the target vehicle at the current moment and the decision results of the abnormal protection parameters; based on the control strategy and the decision results, determine the target output power corresponding to the target vehicle; and control the on-board power supply in the target vehicle to output power according to the target output power.

12. A power control device, characterized in that: The device comprises: An acquisition module is used to obtain the control strategy of the operating parameters of the target vehicle at the current moment and the decision results of the abnormal protection parameters; A determination module, used for determining a target output power corresponding to the target vehicle based on the control strategy and the decision result; The control module is used to control the on-board power supply in the target vehicle to output power according to the target output power.

13. A controller comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 8 are implemented.

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