Vehicle control method, device, equipment and storage medium based on power distribution

Abstract

The present application discloses a vehicle control method, device, equipment and storage medium based on power distribution, which relates to the field of vehicle control technology, and discloses a vehicle control method based on power distribution, including: when detecting that the battery is in a preset battery charge state, obtaining the remaining power of the battery and the front and rear air conditioning heating conditions, and setting a preset allowable power according to the remaining power; setting a target compressor power according to the preset allowable power, and obtaining the current compressor power based on the target compressor power; allocating a target heater power according to the target compressor power, the current compressor power and the front and rear air conditioning heating conditions; and controlling the vehicle according to the target compressor power and the target heater power. Through the power distribution technology based on the remaining battery power and the air conditioning heating conditions, the compressor and heater powers are reasonably allocated in the case of low power, and the energy utilization of the vehicle is controlled.

Description

Technical Field

[0001] The present application relates to the field of vehicle control technology, and in particular to a vehicle control method, device, equipment and storage medium based on power distribution. Background Art

[0002] With the widespread use of electric vehicles, the operation and management of vehicles under low-battery conditions has gradually become a key issue. Electric vehicles have limited electrical energy, and during driving, not only does the power system require stable power support, but the temperature control system in the passenger compartment also consumes a lot of electricity, especially in severe cold or hot environments, the power demand of the air-conditioning compressor and heater will increase significantly. Therefore, in a low-battery environment, an intelligent control system is needed that can reasonably allocate the power of the compressor and heater according to the remaining battery power, ambient temperature, and air-conditioning heating / cooling requirements, balance the power demand and the passenger compartment temperature control demand, and ensure the vehicle's endurance and basic temperature comfort.

[0003] At present, the thermal management system of pure electric vehicles mainly distributes the power of high-voltage accessories through energy management strategies. However, under low-battery conditions, traditional energy management strategies often lack reasonable allocation of high-voltage accessories in the thermal management domain under energy-constrained conditions, resulting in difficulty in meeting the dual needs of vehicle power and comfort when the battery is insufficient.

[0004] The above contents are only used to assist in understanding the technical solution of the present application and do not constitute an admission that the above contents are prior art. Summary of the invention

[0005] The main purpose of this application is to provide a vehicle control method, device, equipment and storage medium based on power distribution, aiming to solve the technical problem that the existing vehicle control system is difficult to effectively allocate the power of the compressor and the heater under low power conditions, resulting in the inability to effectively balance the power demand and temperature control demand.

[0006] To achieve the above objectives, the present application proposes a vehicle control method based on power distribution, the method comprising:

[0007] When it is detected that the battery is in a preset battery charge state, the remaining power of the battery and the front and rear air conditioning heating conditions are obtained, and the preset allowable power is set according to the remaining power;

[0008] setting a target compressor power according to the preset allowable power, and obtaining a current compressor power based on the target compressor power;

[0009] Allocating a target heater power according to the target compressor power, the current compressor power, and the front and rear air conditioning heating conditions;

[0010] The vehicle is controlled based on the target compressor power and the target heater power.

[0011] In one embodiment, the step of allocating the target heater power according to the target compressor power, the current compressor power and the front and rear air conditioning heating conditions comprises:

[0012] When the front and rear air conditioners are heating at the same time, obtaining a preset front air conditioner calibration amount;

[0013] Calculating a target front air conditioner heater power according to the target compressor power, the current compressor power and the preset calibration amount;

[0014] controlling the front air-conditioner heater to heat according to the target front air-conditioner heater power to obtain a current front air-conditioner heater power;

[0015] calculating a target rear air conditioner heater power according to the target compressor power, the target front air conditioner heater power and the current front air conditioner heater power;

[0016] A target heater power is allocated according to the target front air conditioner heater power and the target rear air conditioner heater power.

[0017] In one embodiment, the step of calculating the target rear air conditioner heater power according to the target compressor power, the target front air conditioner heater power and the current front air conditioner heater power comprises:

[0018] Get the preset air conditioning calibration quantity;

[0019] The target rear air conditioner heater power is calculated according to the preset rear air conditioner calibration amount, the target compressor power, the target front air conditioner heater power, and the current front air conditioner heater power.

[0020] In one embodiment, the step of allocating the target heater power according to the target compressor power, the current compressor power and the front and rear air conditioning heating conditions further includes:

[0021] When the front and rear air conditioning heating operating condition is front air conditioning heating, calculating a target front air conditioning heater power according to the target compressor power and the current compressor power;

[0022] The target heater power is allocated according to the target front air conditioner heater power.

[0023] In one embodiment, the step of controlling the vehicle according to the target compressor power and the target heater power comprises:

[0024] obtaining a target front air-conditioner heater power according to the target heater power;

[0025] Obtaining the current ambient temperature of the vehicle, the rated power of the heater, and the first duty cycle;

[0026] determining a first power threshold, a second power threshold, a second duty cycle, and a third duty cycle of the front air conditioner heater power according to at least one of the current ambient temperature, the target front air conditioner heater power, and the heater nominal power;

[0027] determining a target duty cycle according to at least two of the target front air conditioner heater power, the first power threshold, the second power threshold, the first duty cycle, the second duty cycle, and the third duty cycle;

[0028] A vehicle is controlled based on the target compressor power, the target heater power, and the target duty ratio.

[0029] In one embodiment, the step of determining a first power threshold, a second power threshold, a second duty cycle, and a third duty cycle of the front air conditioner heater power according to at least one of the current ambient temperature, the target front air conditioner heater power, and the heater nominal power comprises:

[0030] Get the target temperature of the vehicle;

[0031] Obtaining a temperature difference according to the target temperature and the current ambient temperature;

[0032] Calculating a first power threshold and a second power threshold according to the temperature difference and a preset coefficient;

[0033] calculating a second duty cycle according to the heater nominal power and the target front air conditioner heater power;

[0034] A third duty cycle is obtained according to the target temperature and the temperature difference.

[0035] In one embodiment, the step of determining the target duty cycle according to at least two of the target front air conditioner heater power, the first power threshold, the second power threshold, the first duty cycle, the second duty cycle, and the third duty cycle comprises:

[0036] When the target front air-conditioner heater power is less than the first power threshold, using the first duty cycle as a target duty cycle;

[0037] When the target front air-conditioner heater power is between the first power threshold and the second power threshold, taking the second duty cycle as the target duty cycle;

[0038] When the target front air conditioner heater power is greater than the second power threshold, the third duty cycle is used as the target duty cycle.

[0039] In addition, to achieve the above-mentioned purpose, the present application also proposes a vehicle control device based on power distribution, and the vehicle control device based on power distribution includes:

[0040] an acquisition module, for acquiring the remaining power of the battery and the front and rear air-conditioning heating conditions when detecting that the battery is in a preset battery charge state, and setting a preset allowable power according to the remaining power;

[0041] a setting module, configured to set a target compressor power according to the preset allowable power, and obtain a current compressor power based on the target compressor power;

[0042] an allocation module, configured to allocate a target heater power according to the target compressor power, the current compressor power, and the front and rear air conditioning heating conditions;

[0043] A control module is used to control a vehicle according to the target compressor power and the target heater power.

[0044] In addition, to achieve the above-mentioned objectives, the present application also proposes a vehicle control device based on power distribution, the device comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the steps of the vehicle control method based on power distribution as described above.

[0045] In addition, to achieve the above-mentioned purpose, the present application also proposes a storage medium, which is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the vehicle control method based on power distribution as described above are implemented.

[0046] In addition, to achieve the above-mentioned purpose, the present application also provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the steps of the vehicle control method based on power distribution as described above are implemented.

[0047] One or more technical solutions proposed in this application have at least the following technical effects:

[0048] By obtaining the remaining battery power and the air conditioning heating condition when the battery is detected to be in a preset low-power state, the allowed power is dynamically set and the power of the compressor and heater is reasonably allocated. The target power of the compressor is set according to the remaining battery power to obtain the actual power output of the current compressor, and then the power of the target heater is allocated according to the current compressor power and the air conditioning heating demand to ensure that the basic power needs of the vehicle are prioritized in low-power conditions. At the same time, the control system can make real-time adjustments based on the target compressor power and the target heater power to optimize the operating effect of the air-conditioning system. Compared with the prior art, this solution solves the problem of difficulty in balancing the power requirements of the power system and the temperature control system in low-power conditions through a precise power allocation strategy, achieves more efficient energy utilization and basic temperature control requirements of the passenger compartment, and effectively improves the vehicle's endurance performance and operating stability in low-power conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0050] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0051] Figure 1 A flow chart of a first embodiment of a vehicle control method based on power distribution according to the present application;

[0052] Figure 2 A schematic diagram of the cooling and heating circuit structure provided in Embodiment 1 of the vehicle control method based on power distribution of the present application;

[0053] Figure 3 A flow chart of a second embodiment of a vehicle control method based on power distribution according to the present application;

[0054] Figure 4 This is a schematic diagram of the module structure of a vehicle control device based on power distribution according to an embodiment of the present application;

[0055] Figure 5 Schematic diagram of the device structure of the hardware operating environment involved in the vehicle control method based on power distribution in the embodiment of the present application.

[0056] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0057] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0058] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0059] The main solution of the embodiment of the present application is: when it is detected that the battery is in a preset battery charge state, the remaining power of the battery and the front and rear air conditioning heating conditions are obtained, and the preset allowable power is set according to the remaining power;

[0060] setting a target compressor power according to the preset allowable power, and obtaining a current compressor power based on the target compressor power;

[0061] Allocating a target heater power according to the target compressor power, the current compressor power, and the front and rear air conditioning heating conditions;

[0062] The vehicle is controlled based on the target compressor power and the target heater power.

[0063] In this embodiment, for the convenience of description, the following description is made by taking the identification of the vehicle control device based on power distribution as the execution subject.

[0064] Since the vehicle control system of the prior art is difficult to effectively allocate the power of the compressor and the heater under low power conditions, resulting in the inability to effectively balance the power demand and the temperature control demand, the present application provides a solution, by obtaining the remaining battery power and the air conditioning heating condition when the battery is detected to be in a preset low power state, dynamically setting the allowed power and reasonably allocating the power of the compressor and the heater. The target power of the compressor is set according to the remaining battery power to obtain the actual power output of the current compressor, and then the power of the target heater is allocated according to the current compressor power and the air conditioning heating demand to ensure that the basic power demand of the vehicle is prioritized under low power conditions. At the same time, the control system can make real-time adjustments based on the target compressor power and the target heater power to optimize the operating effect of the air conditioning system. Compared with the prior art, this solution solves the problem of difficulty in balancing the power demand of the power system and the temperature control system under low power conditions through a precise power allocation strategy, achieves more efficient energy utilization and the basic temperature control requirements of the passenger compartment, and effectively improves the vehicle's endurance performance and operating stability under low power conditions.

[0065] It should be noted that the execution subject of this embodiment can be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an electronic device capable of realizing the above functions, a vehicle computer, a vehicle control device based on power distribution, etc. The following takes a vehicle control device based on power distribution as an example to illustrate this embodiment and the following embodiments.

[0066] Based on this, the embodiment of the present application provides a vehicle control method based on power distribution, referring to Figure 1 , Figure 1 This is a flow chart of a first embodiment of a vehicle control method based on power distribution in the present application.

[0067] In this embodiment, the vehicle control method based on power distribution includes steps S10 to S40:

[0068] Step S10, when it is detected that the battery is in a preset battery charge state, obtaining the remaining power of the battery and the front and rear air conditioning heating conditions, and setting the preset allowable power according to the remaining power;

[0069] It should be noted that the preset battery state of charge refers to a preset critical point of battery power, for example, set to 20% or 30%. When the battery state of charge (SOC) is lower than this critical point, it will be recognized that the battery power is insufficient and enter low power mode, triggering further power allocation control strategies. The remaining battery power refers to the available energy currently remaining in the battery. By monitoring the remaining battery power in real time through the Battery Management System (BMS), accurate SOC data can be obtained to determine the power allocation strategy.

[0070] In addition, it should be noted that the front and rear air conditioners refer to the air conditioning system in the vehicle's passenger compartment, which is divided into front air conditioners and rear air conditioners, providing temperature control services for the front and rear passengers respectively. The heating condition refers to the heating demand and status of the air conditioning system, that is, whether the air conditioner is currently in heating mode and the specific heating demand. The heating condition information can be obtained through sensor data, including the current ambient temperature, cabin temperature, set temperature, etc., to determine whether the front and rear air conditioners need to be heated, or to control the front and rear air conditioning heating conditions according to the user's heating needs.

[0071] It is understandable that the preset allowable power is the maximum allowable power set according to the current remaining battery power. The preset allowable power can control the power upper limit of high-voltage accessories such as compressors and positive temperature coefficient heaters (PTC) to achieve reasonable power distribution in low-power states. The preset allowable power will change dynamically. When the remaining battery power continues to decrease, the allowable power will also decrease accordingly to ensure the continuous operation of the system.

[0072] For example, assuming the remaining battery power is 15%, the preset allowable power can be calculated as a maximum of 50% based on an empirical coefficient or a calibration value, that is, the system will limit the total power of the compressor and air conditioner to no more than 50% in the low-battery state, thereby extending battery life.

[0073] It is understandable that before setting the preset allowable power, it is necessary to calibrate the output time interval of the control system. During the time interval, subsequent calculations are performed based on the preset allowable power. After the time interval, the preset allowable power can be recalibrated and subsequent calculations are performed based on the new preset allowable power.

[0074] In addition, it can be understood that this embodiment acts on a cooling and heating circuit, referring to Figure 2 , Figure 2 This is a schematic diagram of the cooling and heating circuit structure of the first embodiment of the vehicle control method based on power distribution of the present application.

[0075] like Figure 2 As shown, the compressor is responsible for compressing the refrigerant to a high temperature and high pressure state, and transporting it to the water-cooled condenser for heat exchange with the coolant. The refrigerant is then further cooled by the low-temperature radiator and flows through the oil cooler to dissipate heat for the lubricating oil; the refrigerant flows into the evaporator 1 through the electric expansion valve 1 to provide air conditioning refrigeration in the vehicle, and part of the refrigerant enters the heater core through the electric expansion valve 2 to cooperate with the auxiliary heater (for low-temperature rapid heating) to heat the vehicle. The refrigerant enters the external cooling units 1 and 2 through the electric expansion valve 3 for additional cooling, and finally returns to the compressor to complete the cycle. The cooling and heating modes are switched through the three-way valve and the four-way valve, and the warm air circuit water pump and the battery circuit water pump provide circulation power for the air conditioning and battery thermal management in the vehicle respectively. The battery cooling part monitors the battery temperature through the temperature sensor 1 and adjusts the battery thermal management in combination with the cooling circuit; the temperature sensor 2 monitors the cabin temperature and provides feedback data for heating or cooling. It also includes an electric vehicle charger, which is responsible for the vehicle charging process; a DC-DC converter, which realizes high and low voltage electrical conversion; and a motor control unit, which controls the vehicle power output. These electronic devices realize thermal management through the cooling circuit to ensure that the electric vehicle operates stably under different working conditions.

[0076] Step S20, setting a target compressor power according to the preset allowable power, and obtaining a current compressor power based on the target compressor power;

[0077] It should be noted that the target compressor power is the maximum allowable output power of the compressor under the current working conditions. In this embodiment, the preset allowable power is used as the target compressor power. The current compressor power is the power value actually output by the compressor during real-time operation, which may be affected by hardware conditions, environmental factors and system adjustments.

[0078] It can be understood that the preset allowable power is used as the target compressor power, and the current compressor power of the compressor is controlled according to the target compressor power so that it cannot exceed the target compressor power, and the output is subsequently performed according to the current compressor power.

[0079] Step S30, allocating a target heater power according to the target compressor power, the current compressor power, and the front and rear air conditioning heating conditions;

[0080] It should be noted that the target heater power is the expected power value allocated to the front and rear heaters on the basis of meeting the compressor power demand.

[0081] It is understandable that the target heater power can be adaptively allocated to the heater according to the target compressor power and the current compressor power according to the front and rear air conditioning heating conditions.

[0082] In a feasible implementation, step S30 may include steps A31 to A35:

[0083] Step A31, when the front and rear air conditioners are heating at the same time, obtaining a preset front air conditioner calibration amount;

[0084] It should be noted that simultaneous heating of the front and rear air conditioners means that in the vehicle's air conditioning system, the front and rear air conditioners simultaneously enter the heating mode. The front and rear air conditioning systems in the vehicle are used to adjust the temperature of the front and rear areas of the vehicle respectively to meet the comfort needs of passengers in different areas.

[0085] In addition, it should be noted that the preset front air conditioning calibration amount is a pre-set performance indicator for controlling the front air conditioning system to ensure that the air conditioning system can output appropriate heat according to demand. The preset front air conditioning calibration amount can be determined by experimental data or simulation calculation before the vehicle leaves the factory to set the working range of the front air conditioning under specific working conditions. This embodiment does not specifically limit the size of the preset front air conditioning calibration amount.

[0086] Step A32, calculating a target front air conditioner heater power according to the target compressor power, the current compressor power and the preset calibration amount;

[0087] It should be noted that the target front air conditioner heater power is the upper limit of the front air conditioner heater power, which is used to prevent the front air conditioner power output from being too high, thereby affecting other energy requirements of the vehicle. The power upper limit is determined based on the current compressor power, the target compressor power and the calibration amount of the front air conditioner, and the rationality of energy distribution can be determined.

[0088] It is understandable that the target front air conditioner heater power can be calculated by the target compressor power, the current compressor power and the preset calibration amount. The target front air conditioner heater power is calculated as follows:

[0089] (Formula 1)

[0090] In the formula, is the target compressor power, is the current compressor power, To preset the calibration amount, is the target front air conditioner heater power.

[0091] In addition, it can be understood that when the calculated target front air-conditioner heater power is less than or equal to 0, 0 is taken as the target front air-conditioner heater power.

[0092] Step A33, controlling the front air conditioner heater to heat according to the target front air conditioner heater power to obtain a current front air conditioner heater power;

[0093] It is understood that controlling the front air conditioner heater means adjusting the electric energy input or other forms of power regulation so that the heater operates according to the target front air conditioner heater power as the upper power limit. For example, the target front air conditioner heater power is 1kW, and by adjusting the current input, the actual power of the front air conditioner heater is stabilized below 1kW to control the heat distribution of the vehicle.

[0094] Step A34, calculating a target rear air conditioner heater power according to the target compressor power, the target front air conditioner heater power and the current front air conditioner heater power;

[0095] It should be noted that the target rear air-conditioner heater power refers to the maximum allowable power of the rear air-conditioner heater, which serves as the upper limit value of the rear air-conditioner heater power output.

[0096] It is understandable that the calculation of the target rear air-conditioning heater power needs to comprehensively consider the aforementioned target compressor power, target front air-conditioning heater power and current front air-conditioning heater power. According to the current power distribution status, the target power of the rear air-conditioning heater can be dynamically adjusted to ensure that the total power distribution is within a reasonable range.

[0097] In a feasible implementation, step A34 may include steps A341-A342:

[0098] Step A341, obtaining a preset air conditioning calibration amount;

[0099] It should be noted that the preset rear air conditioner calibration quantity is a pre-set calibration value, which is usually obtained through experiments or data analysis and is used to control the power calculation of the rear air conditioner according to actual needs. The calibration quantity is obtained to ensure that the power of the rear air conditioner during operation is within the design range, which can meet the heating demand without exceeding the energy budget of the system.

[0100] Step A342, calculating the target rear air conditioner heater power according to the preset rear air conditioner calibration amount, the target compressor power, the target front air conditioner heater power and the current front air conditioner heater power.

[0101] It should be noted that the rear air-conditioning heater power is the maximum allowable power of the rear air-conditioning, ensuring that under limited energy conditions, the rear air-conditioning can reasonably allocate sufficient power without exceeding the total limit of energy management.

[0102] It is understood that the target rear air conditioner heater power can be calculated according to the preset rear air conditioner calibration quantity, the target compressor power, the target front air conditioner heater power, the current front air conditioner heater power and the preset rear air conditioner calibration quantity. The target rear air conditioner heater power is calculated as follows:

[0103] (Formula 2)

[0104] In the formula, To preset the air conditioning calibration quantity, is the target compressor power, is the target front air conditioner heater power, is the current front air conditioner heater power, To preset the air conditioning calibration quantity, is the target rear air conditioning heater power.

[0105] In addition, it can be understood that when the calculated target rear air-conditioner heater power is less than or equal to 0, 0 is taken as the target rear air-conditioner heater power.

[0106] Step A35 , allocating a target heater power according to the target front air conditioner heater power and the target rear air conditioner heater power.

[0107] It is understandable that, based on the target power requirements of the front and rear air conditioners, the total heater power is allocated to the most needed part first to meet the temperature control requirements of different areas. In the case of limited power resources, dynamic power adjustment can be performed based on the calculated target power of the front and rear air conditioner heaters.

[0108] In a feasible implementation, step S30 may include steps B31-B32:

[0109] Step B31, when the front and rear air conditioning heating operating condition is front air conditioning heating, calculating a target front air conditioning heater power according to the target compressor power and the current compressor power;

[0110] It can be understood that the front and rear air conditioning heating working condition is front air conditioning heating, which means that in the front and rear air conditioning control system of the vehicle, only the front air conditioning is in the heating working condition. In other words, the rear air conditioning is not turned on or is not heating, and only the front air conditioning heater is running to meet the temperature adjustment requirements of the front area. When the front and rear air conditioning heating working condition is front air conditioning heating, the target front air conditioning heater power is calculated as follows:

[0111] (Formula 3)

[0112] In the formula, is the target compressor power, is the current compressor power, is the target front air conditioner heater power.

[0113] Step B32, allocating target heater power according to the target front air-conditioner heater power.

[0114] It is understandable that by allocating the target heater power, it is possible to ensure that the actual operating power of the front air-conditioning heater does not exceed the limit of the target front air-conditioning heater power. The allocation process comprehensively considers the target power, actual operating requirements, and the overall planning of energy management, which can meet the heating needs of passengers in low-power conditions and better allocate the vehicle's electrical energy.

[0115] Step S40 , controlling the vehicle according to the target compressor power and the target heater power.

[0116] It can be understood that the actual power output of the compressor and heater can be dynamically adjusted based on the calculated target power value, and the vehicle can be controlled based on this actual output to ensure that basic comfort and power requirements can still be met in a low-battery state.

[0117] This embodiment provides a vehicle control method based on power distribution. By dynamically adjusting the power of the compressor and the heater based on the remaining battery power and the air-conditioning heating conditions, it solves the technical problem of how to reasonably allocate vehicle power to ensure comfort and power requirements in a low-battery state, thereby achieving the beneficial effects of extending battery life and optimizing in-vehicle temperature control.

[0118] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as those in the above-mentioned embodiment 1 can be referred to the above introduction, and will not be repeated in the following. Figure 3 , step S40 of the vehicle control method based on power distribution includes steps S41 to S45:

[0119] Step S41, obtaining a target front air-conditioner heater power according to the target heater power;

[0120] It is understood that the target heater power is a total power upper limit set for all heaters in the vehicle air conditioning system, the front air conditioning heater and the possible rear air conditioning heater. The target front air conditioning heater power can be obtained through the target heater power.

[0121] Step S42, obtaining the current ambient temperature of the vehicle, the rated power of the heater, and the first duty cycle;

[0122] It should be noted that the current ambient temperature refers to the real-time temperature data of the external environment in which the vehicle is located. It affects the operating mode and power demand of the heater, and is an important basis for adjusting the operating status of the heater. The nominal power of the heater refers to the power level at which the heater is designed or specified under standard working conditions, which can be understood as the rated power. The duty cycle refers to the proportion of time that the heater is in the "on" state in a cycle, expressed as a percentage. The first duty cycle is a duty cycle value set for a specific temperature control condition. The duty cycle is used to control the actual power output of the heater by pulse width modulation. For example, a duty cycle of 50% means that the heater is turned on half of the time and turned off half of the time in a cycle, and its actual output power is 50% of the nominal power.

[0123] Step S43, determining a first power threshold, a second power threshold, a second duty cycle, and a third duty cycle of the front air conditioner heater power according to at least one of the current ambient temperature, the target front air conditioner heater power, and the heater nominal power;

[0124] It should be noted that the first power threshold is the minimum power output limit of the front air conditioner heater, which is used to ensure that the device can meet basic temperature control requirements. The second power threshold is the higher limit value of the front air conditioner heater power output, which is used to control power distribution under low power conditions and provide a reference range for subsequent power control.

[0125] It can be understood that the above-mentioned threshold and duty cycle can be determined based on at least one of the current ambient temperature, the target front air-conditioning heater power and the nominal power of the heater. By setting the power threshold and duty cycle, the operating efficiency of the front air-conditioning heater under different requirements can be ensured.

[0126] In a feasible implementation, step S43 may include steps S431 to S435:

[0127] Step S431, obtaining a target temperature of the vehicle;

[0128] It should be noted that the target temperature is the set temperature that is expected to be achieved in the passenger compartment, which can be set by the driver or passenger in the air-conditioning system according to comfort needs. The target temperature is the basis for the entire thermal management system to perform cooling or heating.

[0129] Step S432, obtaining a temperature difference according to the target temperature and the current ambient temperature;

[0130] It should be noted that the current ambient temperature refers to the air temperature outside the vehicle. The current ambient temperature value can be detected in real time by the vehicle's external temperature sensor. The temperature difference is the difference between the target temperature and the current ambient temperature, which is used to determine the required heating or cooling intensity.

[0131] Step S433, calculating a first power threshold and a second power threshold according to the temperature difference and a preset coefficient;

[0132] It is understandable that the first power threshold and the second power threshold can be calculated according to the temperature difference and the preset coefficient, respectively, to better meet the temperature control requirements as a reference standard for subsequent power output. The first power threshold and the second power threshold are calculated as follows:

[0133] (Formula 4)

[0134] (Formula 5)

[0135] In the formula, is the first power threshold, is the first power threshold of the previous output time interval, is the temperature difference, It is the inverse value of the remaining battery power, reflecting the need to limit power in low-battery conditions. , , as well as is the empirical coefficient to determine the influence of temperature difference and power on the power range, is the second power threshold.

[0136] Step S434, calculating a second duty cycle according to the heater nominal power and the target front air conditioner heater power;

[0137] It is understandable that the target front air-conditioner heater power may be divided by the heater nominal power and then converted into a percentage to obtain the second duty cycle.

[0138] Step S435: obtaining a third duty cycle according to the target temperature and the temperature difference.

[0139] It is understandable that by dynamically adjusting the third duty cycle according to the temperature difference, it is possible to provide power output that matches the demand, ensuring that the cabin temperature gradually approaches the target value. For example, if the current temperature difference is medium, the third duty cycle is set to 80%, indicating that the heater is in operation 80% of the time in each operating cycle. If the temperature difference increases, the third duty cycle is adjusted to 99%.

[0140] Step S44, determining a target duty cycle according to at least two of the target front air conditioner heater power, the first power threshold, the second power threshold, the first duty cycle, the second duty cycle, and the third duty cycle;

[0141] It should be noted that the target duty cycle is determined by comprehensively considering the relationship between the target front air conditioner heater power and the first power threshold, the second power threshold, and the first duty cycle, the second duty cycle, and the third duty cycle. The target duty cycle is used to control the vehicle, determines the on-off ratio of the heater in a control cycle, and directly affects the actual power output and energy allocation efficiency.

[0142] In a feasible implementation, step S44 may include steps S441 to S443:

[0143] Step S441, when the target front air conditioner heater power is less than the first power threshold, taking the first duty cycle as the target duty cycle;

[0144] Step S442, when the target front air conditioner heater power is between the first power threshold and the second power threshold, taking the second duty cycle as the target duty cycle;

[0145] Step S443: when the target front air conditioner heater power is greater than the second power threshold, the third duty cycle is used as the target duty cycle.

[0146] It can be understood that steps S441 to S443 represent the process of flexibly selecting the duty cycle for control according to the current front air conditioner heater power. When the target front air conditioner heater power is less than the first power threshold, the first duty cycle is used, indicating that the power demand is low; when the target power is between the first power threshold and the second power threshold, the system uses the second duty cycle, indicating a medium power demand; when the target power exceeds the second power threshold, the system uses the third duty cycle, representing a high power demand. The output intensity of the heater can be flexibly adjusted according to different power requirements to achieve accurate and efficient temperature control.

[0147] Step S45 , controlling the vehicle according to the target compressor power, the target heater power and the target duty cycle.

[0148] It is understood that the target compressor power determines the maximum operating power of the compressor in the air conditioning system to meet the cooling or dehumidification requirements. The target duty cycle is used to adjust the actual output power of the heater, and the on-off ratio of the heater is controlled by pulse width modulation to achieve more precise power regulation. The target heater power is the maximum power limit for the heater operation, which is used to ensure that the heating system meets the temperature requirements in the car and does not exceed the energy range allowed by the battery. The target compressor power, target heater power and target duty cycle will be considered comprehensively to ensure the overall energy distribution balance of the vehicle.

[0149] This embodiment provides a vehicle control method based on power distribution. By comprehensively considering factors such as target heater power, ambient temperature, heater nominal power, duty cycle, and temperature difference, a technical means is used to dynamically adjust the power threshold and duty cycle of the front air-conditioning heater. This solves the technical problem of how to accurately control the vehicle air-conditioning and heating system to optimize energy distribution under different ambient temperatures and battery power conditions, thereby achieving the beneficial effects of improving energy utilization efficiency, ensuring passenger comfort, and extending battery life.

[0150] It should be noted that the above examples are only used to understand the present application and do not constitute a limitation on the vehicle control method based on power distribution of the present application. More simple transformations based on this technical concept are all within the scope of protection of the present application.

[0151] This application also provides a vehicle control device based on power distribution, please refer to Figure 4 , the vehicle control device based on power distribution includes:

[0152] The acquisition module 10 is used to acquire the remaining power of the battery and the front and rear air-conditioning heating conditions when the battery is detected to be in a preset battery charge state, and to set the preset allowable power according to the remaining power;

[0153] A setting module 20, configured to set a target compressor power according to the preset allowable power, and obtain a current compressor power based on the target compressor power;

[0154] An allocating module 30, configured to allocate a target heater power according to the target compressor power, the current compressor power and the front and rear air conditioning heating conditions;

[0155] The control module 40 is configured to control the vehicle according to the target compressor power and the target heater power.

[0156] The vehicle control device based on power distribution provided by the present application adopts the vehicle control method based on power distribution in the above embodiment, which can solve the technical problem that the existing vehicle control system is difficult to effectively distribute the power of the compressor and the heater under low power conditions, resulting in the inability to effectively balance the power demand and the temperature control demand. Compared with the prior art, the beneficial effects of the vehicle control device based on power distribution provided by the present application are the same as the beneficial effects of the vehicle control method based on power distribution provided by the above embodiment, and the other technical features of the vehicle control device based on power distribution are the same as the features disclosed in the above embodiment method, which will not be repeated here.

[0157] In one embodiment, the allocation module 30 is also used to obtain a preset front air-conditioner calibration quantity when the front and rear air-conditioning heating operating condition is simultaneous heating of the front and rear air-conditioners; calculate a target front air-conditioner heater power according to the target compressor power, the current compressor power and the preset calibration quantity; control the front air-conditioner heater for heating according to the target front air-conditioner heater power to obtain the current front air-conditioner heater power; calculate a target rear air-conditioner heater power according to the target compressor power, the target front air-conditioner heater power and the current front air-conditioner heater power; and allocate the target heater power according to the target front air-conditioner heater power and the target rear air-conditioner heater power.

[0158] In one embodiment, the allocation module 30 is also used to obtain a preset rear air-conditioning calibration quantity; and calculate the target rear air-conditioning heater power according to the preset rear air-conditioning calibration quantity, the target compressor power, the target front air-conditioning heater power and the current front air-conditioning heater power.

[0159] In one embodiment, the allocation module 30 is also used to calculate the target front air-conditioner heater power according to the target compressor power and the current compressor power when the front and rear air-conditioning heating operating conditions are front air-conditioning heating; and allocate the target heater power according to the target front air-conditioner heater power.

[0160] In one embodiment, the control module 40 is further used to obtain a target front air-conditioning heater power based on the target heater power; obtain the current ambient temperature of the vehicle, the nominal power of the heater, and a first duty cycle; determine a first power threshold, a second power threshold, a second duty cycle, and a third duty cycle of the front air-conditioning heater power based on at least one of the current ambient temperature, the target front air-conditioning heater power, and the nominal power of the heater; determine a target duty cycle based on at least two of the target front air-conditioning heater power, the first power threshold, the second power threshold, the first duty cycle, the second duty cycle, and the third duty cycle; and control the vehicle based on the target compressor power, the target heater power, and the target duty cycle.

[0161] In one embodiment, the control module 40 is also used to obtain a target temperature of the vehicle; obtain a temperature difference based on the target temperature and the current ambient temperature; calculate a first power threshold and a second power threshold based on the temperature difference and a preset coefficient; calculate a second duty cycle based on the heater nominal power and the target front air-conditioning heater power; and obtain a third duty cycle based on the target temperature and the temperature difference.

[0162] In one embodiment, the control module 40 is further used to use the first duty cycle as the target duty cycle when the target front air-conditioning heater power is less than the first power threshold; use the second duty cycle as the target duty cycle when the target front air-conditioning heater power is between the first power threshold and the second power threshold; and use the third duty cycle as the target duty cycle when the target front air-conditioning heater power is greater than the second power threshold.

[0163] The present application provides a vehicle control device based on power distribution, and the vehicle control device based on power distribution includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the vehicle control method based on power distribution in the above-mentioned embodiment one.

[0164] Reference below Figure 5 , which shows a schematic diagram of the structure of a vehicle control device based on power distribution suitable for implementing an embodiment of the present application. The vehicle control device based on power distribution in the embodiment of the present application may include but is not limited to mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 5 The power distribution-based vehicle control device shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0165] like Figure 5As shown, the vehicle control device based on power distribution may include a processing device 1001 (such as a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM: Read Only Memory) 1002 or a program loaded from a storage device 1003 to a random access memory (RAM: Random Access Memory) 1004. Various programs and data required for the operation of the vehicle control device based on power distribution are also stored in RAM1004. The processing device 1001, ROM1002 and RAM1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems may be connected to the I / O interface 1006: input devices 1007 including, for example, a touch screen, a touchpad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; storage devices 1003 including, for example, a magnetic tape, a hard disk, etc.; and communication devices 1009. The communication device 1009 may allow the vehicle control device based on power distribution to communicate with other devices wirelessly or by wire to exchange data. Although the figure shows a vehicle control device based on power distribution with various systems, it should be understood that it is not required to implement or have all the systems shown. More or fewer systems may be implemented or have alternatively.

[0166] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0167] The vehicle control device based on power distribution provided by the present application adopts the vehicle control method based on power distribution in the above embodiment, which can solve the technical problem that the existing vehicle control system is difficult to effectively distribute the power of the compressor and the heater under low power conditions, resulting in the inability to effectively balance the power demand and the temperature control demand. Compared with the prior art, the beneficial effects of the vehicle control device based on power distribution provided by the present application are the same as the beneficial effects of the vehicle control method based on power distribution provided by the above embodiment, and the other technical features of the vehicle control device based on power distribution are the same as the features disclosed in the method of the previous embodiment, which will not be repeated here.

[0168] It should be understood that the various parts disclosed in this application can be implemented by hardware, software, firmware or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0169] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0170] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, computer programs) stored thereon, the computer-readable program instructions being used to execute the vehicle control method based on power distribution in the above-mentioned embodiment.

[0171] The computer-readable storage medium provided in the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM: Random Access Memory), a read-only memory (ROM: Read Only Memory), an erasable programmable read-only memory (EPROM: Erasable Programmable Read Only Memory or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM: CD-Read Only Memory), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program, which may be used by or in combination with an instruction execution system, system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency: Radio Frequency), etc., or any suitable combination of the above.

[0172] The computer-readable storage medium may be included in the vehicle control device based on power distribution; or may exist independently without being assembled into the vehicle control device based on power distribution.

[0173] The computer-readable storage medium carries one or more programs. When the one or more programs are executed by the vehicle control device based on power distribution, the vehicle control device based on power distribution: when detecting that the battery is in a preset battery charge state, obtains the remaining power of the battery and the front and rear air conditioning heating conditions, and sets the preset allowable power according to the remaining power;

[0174] setting a target compressor power according to the preset allowable power, and obtaining a current compressor power based on the target compressor power;

[0175] Allocating a target heater power according to the target compressor power, the current compressor power, and the front and rear air conditioning heating conditions;

[0176] The vehicle is controlled based on the target compressor power and the target heater power.

[0177] Computer program code for performing the operations of the present application may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0178] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present application. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0179] The modules involved in the embodiments described in this application may be implemented by software or hardware, wherein the name of the module does not constitute a limitation on the unit itself in some cases.

[0180] The readable storage medium provided by the present application is a computer-readable storage medium, which stores computer-readable program instructions (i.e., computer programs) for executing the above-mentioned vehicle control method based on power distribution, and can solve the technical problem that the existing vehicle control system is difficult to effectively distribute the power of the compressor and the heater under low power conditions, resulting in the inability to effectively balance the power demand and the temperature control demand. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by the present application are the same as the beneficial effects of the vehicle control method based on power distribution provided by the above-mentioned embodiment, and will not be repeated here.

[0181] The present application also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the steps of the vehicle control method based on power distribution as described above are implemented.

[0182] The computer program product provided by the present application can solve the technical problem that the existing vehicle control system is difficult to effectively allocate the power of the compressor and the heater under low power conditions, resulting in the inability to effectively balance the power demand and the temperature control demand. Compared with the prior art, the beneficial effects of the computer program product provided by the present application are the same as the beneficial effects of the vehicle control method based on power allocation provided by the above embodiment, and will not be repeated here.

[0183] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A vehicle control method based on power distribution, characterized in that: The method comprises: When it is detected that the battery is in a preset battery charge state, the remaining power of the battery and the front and rear air conditioning heating conditions are obtained, and the preset allowable power is set according to the remaining power; setting a target compressor power according to the preset allowable power, and obtaining a current compressor power based on the target compressor power; Allocating a target heater power according to the target compressor power, the current compressor power, and the front and rear air conditioning heating conditions; controlling a vehicle according to the target compressor power and the target heater power; The step of allocating the target heater power according to the target compressor power, the current compressor power and the front and rear air conditioning heating conditions comprises: When the front and rear air conditioners are heated at the same time, a preset front air conditioner calibration quantity is obtained, and the preset front air conditioner calibration quantity is used to set the working range of the front air conditioner under a specific working condition; Calculating a target front air conditioner heater power according to the target compressor power, the current compressor power and the preset front air conditioner calibration amount; controlling the front air-conditioner heater to heat according to the target front air-conditioner heater power to obtain a current front air-conditioner heater power; calculating a target rear air conditioner heater power according to the target compressor power, the target front air conditioner heater power and the current front air conditioner heater power; A target heater power is allocated according to the target front air conditioner heater power and the target rear air conditioner heater power.

2. The method according to claim 1, characterized in that The step of calculating the target rear air conditioner heater power according to the target compressor power, the target front air conditioner heater power and the current front air conditioner heater power comprises: Obtaining a preset rear air conditioner calibration quantity, wherein the preset rear air conditioner calibration quantity is used to set a working range of the rear air conditioner under specific working conditions; The target rear air conditioner heater power is calculated according to the preset rear air conditioner calibration amount, the target compressor power, the target front air conditioner heater power, and the current front air conditioner heater power.

3. The method according to claim 1, characterized in that The step of allocating the target heater power according to the target compressor power, the current compressor power and the front and rear air conditioning heating conditions further includes: When the front and rear air conditioning heating operating condition is front air conditioning heating, calculating a target front air conditioning heater power according to the target compressor power and the current compressor power; The target heater power is allocated according to the target front air conditioner heater power.

4. The method according to claim 1, characterized in that The step of controlling the vehicle according to the target compressor power and the target heater power includes: obtaining a target front air-conditioner heater power according to the target heater power; Obtaining the current ambient temperature of the vehicle, the rated power of the heater, and the first duty cycle; determining a first power threshold, a second power threshold, a second duty cycle, and a third duty cycle of the front air conditioner heater power according to at least one of the current ambient temperature, the target front air conditioner heater power, and the heater nominal power; determining a target duty cycle according to at least two of the target front air conditioner heater power, the first power threshold, the second power threshold, the first duty cycle, the second duty cycle, and the third duty cycle; A vehicle is controlled based on the target compressor power, the target heater power, and the target duty ratio.

5. The method according to claim 4, characterized in that The step of determining a first power threshold, a second power threshold, a second duty cycle, and a third duty cycle of the front air conditioner heater power according to at least one of the current ambient temperature, the target front air conditioner heater power, and the heater nominal power comprises: Get the target temperature of the vehicle; Obtaining a temperature difference according to the target temperature and the current ambient temperature; Calculating a first power threshold and a second power threshold according to the temperature difference and a preset coefficient; calculating a second duty cycle according to the heater nominal power and the target front air conditioner heater power; A third duty cycle is obtained according to the target temperature and the temperature difference.

6. The method according to claim 4, characterized in that The step of determining the target duty cycle according to at least two of the target front air conditioner heater power, the first power threshold, the second power threshold, the first duty cycle, the second duty cycle, and the third duty cycle comprises: When the target front air-conditioner heater power is less than the first power threshold, using the first duty cycle as a target duty cycle; When the target front air-conditioner heater power is between the first power threshold and the second power threshold, taking the second duty cycle as the target duty cycle; When the target front air conditioner heater power is greater than the second power threshold, the third duty cycle is used as the target duty cycle.

7. A vehicle control device based on power distribution, characterized in that: The device comprises: an acquisition module, for acquiring the remaining power of the battery and the front and rear air-conditioning heating conditions when detecting that the battery is in a preset battery charge state, and setting a preset allowable power according to the remaining power; a setting module, configured to set a target compressor power according to the preset allowable power, and obtain a current compressor power based on the target compressor power; an allocation module, configured to allocate a target heater power according to the target compressor power, the current compressor power, and the front and rear air conditioning heating conditions; a control module, configured to control a vehicle according to the target compressor power and the target heater power; The allocation module is further used to obtain a preset front air-conditioner calibration quantity when the front and rear air-conditioning heating working condition is simultaneous heating of the front and rear air-conditioning, and the preset front air-conditioner calibration quantity is used to set the working range of the front air-conditioner under specific working conditions; calculate the target front air-conditioner heater power according to the target compressor power, the current compressor power and the preset front air-conditioner calibration quantity; control the front air-conditioner heater for heating according to the target front air-conditioner heater power to obtain the current front air-conditioner heater power; calculate the target rear air-conditioner heater power according to the target compressor power, the target front air-conditioner heater power and the current front air-conditioner heater power; and allocate the target heater power according to the target front air-conditioner heater power and the target rear air-conditioner heater power.

8. A vehicle control device based on power distribution, characterized in that: The device comprises: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the vehicle control method based on power distribution according to any one of claims 1 to 6.

9. A storage medium, characterized in that: The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the vehicle control method based on power distribution as described in any one of claims 1 to 6 are implemented.

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