Method for controlling power of range extender of vehicle, vehicle and computer readable storage medium

Abstract

The application discloses a vehicle range extender power control method, a vehicle and a computer readable storage medium. The vehicle range extender power control method comprises the following steps: if a warm-up starting condition is met, a warm-up control method is executed, and the range extender is controlled to output according to an initial output power; the initial output power is the smaller one of the output power of the range extender at a current temperature and the design power of a heating device; if the chargeable power of a power battery is not greater than the initial output power, and the heating device is in a closed state, the heating device is controlled to be opened, and the heating device is controlled to operate according to a target consumption power, the target consumption power being the difference between the initial output power and the chargeable power; if the chargeable power is not greater than the initial output power, and the heating device is in an opened state, the heating device is controlled to operate according to the larger one of the target consumption power and the requested power of the heating device. In this way, the engine rapid warm-up requirement, the vehicle heating requirement and the power battery safe charging requirement can be considered.

Description

Technical Field

[0001] This application relates to the field of range-extended vehicle technology, and more particularly to a range extender power control method for a vehicle, a vehicle, and a computer-readable storage medium. Background Technology

[0002] With increasingly stringent environmental regulations and the need for energy structure transformation, new energy vehicles have experienced rapid development. Range-extended electric vehicles (REEVs), as an important technological approach, use range extenders to provide electricity when the battery is low, ensuring the vehicle's driving range and ease of use. Among them, methanol-powered REEVs have unique advantages due to their clean fuel and diverse fuel sources.

[0003] However, methanol-powered range-extended electric vehicles face numerous challenges during the cold winter months. In low-temperature environments, the starting performance, combustion efficiency, and lubrication of methanol engines are all affected. Furthermore, in related technologies, the power control strategies of range extenders struggle to simultaneously meet the needs of rapid engine warm-up, vehicle interior heating, and safe battery charging at low temperatures. Summary of the Invention

[0004] This application provides a method for controlling the power of a vehicle's range extender, a vehicle, and a computer-readable storage medium to solve at least some of the problems in the related art.

[0005] This application provides a method for controlling the power of a vehicle's range extender, including:

[0006] If the vehicle startup information meets the warm-up startup conditions, the warm-up control method is executed, which includes:

[0007] The range extender of the vehicle is controlled to output power according to an initial output power; wherein the initial output power is the smaller of the output power of the range extender at the current temperature and the design power of the vehicle's heating system.

[0008] If the rechargeable power of the vehicle's power battery is not greater than the initial output power, and the heating device is in a closed state, control the heating device to turn on, and control the heating device to operate according to the target power consumption of the heating device, wherein the target power consumption is the difference between the initial output power and the rechargeable power;

[0009] If the rechargeable power of the vehicle's power battery is not greater than the initial output power, the heating device is in the on state, and the heating device is controlled to operate according to the greater of the target power consumption and the requested power of the heating device.

[0010] Optionally, the warm-up control method further includes:

[0011] Obtain the actual power consumption of the heating equipment, the actual charging power of the power battery, and the actual output power of the range extender;

[0012] If the sum of the actual power consumption of the heating equipment and the actual charging power of the power battery is greater than the actual output power of the range extender, the range extender is controlled to increase its output power.

[0013] If the sum of the actual power consumption of the heating equipment and the actual charging power of the power battery is not greater than the output power of the range extender, the range extender is controlled to reduce its output power.

[0014] Optionally, the output power of the range extender is not less than the power of the range extender when operating at the lower speed limit, and is not greater than the output power of the range extender at the current temperature, nor greater than the design power of the heating equipment.

[0015] Optionally, the rechargeable power of the power battery is the sum of the measured rechargeable power of the power battery and the overcharge power value of the power battery.

[0016] Optionally, the power control method further includes:

[0017] If the vehicle operation information meets the warm-up termination conditions, the demand response control method is executed, which includes:

[0018] Obtain the SOC of the power battery and the total power requirement of the vehicle;

[0019] The target output power of the range extender is determined based on the SOC of the power battery and the vehicle's overall power requirements.

[0020] Control the range extender to operate according to the target output power.

[0021] Optionally, the power control method further includes:

[0022] If the rechargeable power of the power battery is greater than the initial output power, the demand response control method is executed.

[0023] Optionally, controlling the heating equipment to operate according to the greater of the target power consumption and the requested power of the heating equipment includes:

[0024] If the rechargeable power of the vehicle's power battery is not greater than the initial output power, the heating device is in the on state. If the requested power of the heating device is greater than the target power consumption, the heating device is controlled to operate according to the requested power.

[0025] After controlling the heating equipment to operate at the requested power, the power control method further includes:

[0026] Execute the aforementioned demand response control method; or

[0027] The charging power of the power battery is controlled to be no greater than the rechargeable power of the power battery, and the difference between the charging power and the rechargeable power of the power battery is equal to the difference between the target power consumption and the requested power.

[0028] Optionally, the vehicle range extender power control method further includes:

[0029] Obtain the total power demand of the vehicle and the output power of the power battery;

[0030] If the difference between the total power demand of the vehicle and the output power of the power battery is greater than the initial output power, the demand response control method is executed.

[0031] Optionally, if the vehicle startup information meets the warm-up startup conditions, the warm-up control method is executed, including:

[0032] If the ambient temperature is lower than the first temperature limit, the temperature of the coolant in the range extender is lower than the second temperature limit, and the temperature of the power battery is lower than the third temperature limit, the warm-up control method is executed.

[0033] or

[0034] If the date information indicates winter, the temperature of the coolant in the range extender is less than the second temperature limit, or the idle time of the vehicle is greater than the first time limit, the warm-up control method is executed.

[0035] This application also provides a vehicle including a range extender, a power battery, a heating device, and a power control system. The power control system is electrically connected to the range extender, the power battery, and the heating device. The power control system includes a memory, a processor, and a program stored in the memory and executable on the processor. When the processor executes the program, it implements a range extender power control method.

[0036] In another aspect, this application provides a computer-readable storage medium on which a program is stored, and a power control method is implemented when the program is executed.

[0037] Compared with related technologies, the vehicle range extender power control method, vehicle, and computer-readable storage medium provided in this application determine whether the vehicle's startup information meets the warm-up startup conditions. If the vehicle startup information meets the warm-up startup conditions, a warm-up control method is executed, and the warm-up control method includes:

[0038] The vehicle's range extender is controlled to output power according to its initial output power, which is the lesser of the range extender's output power at the current temperature and the design power of the vehicle's heating system. This ensures that the initial output power does not exceed the range extender's output power at the current temperature, preventing the engine from exceeding its capacity limits and thus avoiding engine overload or operation under adverse conditions. The initial output power also does not exceed the design power of the vehicle's heating system, preventing overcharging of the battery when it does not require charging, as this could compromise the battery's safety performance.

[0039] If the rechargeable power of the vehicle's battery is no greater than the initial output power, and the heating system is off, the system is controlled to turn on and operate at its target power consumption, which is the difference between the initial output power and the rechargeable power. In this way, the heating system can consume the portion of the range extender's output power that exceeds the battery's rechargeable power, preventing overcharging of the battery. Furthermore, the heating system warms the vehicle, improving the comfort of the passengers.

[0040] If the vehicle's battery rechargeable power is no greater than the initial output power, the heating system is on. The system operates at the greater of the target power consumption and the requested power consumption. If the requested power consumption is greater than the target power consumption, the system operates at the requested power consumption, thus meeting the vehicle's heating needs while preventing battery overcharging. If the requested power consumption is no greater than the target power consumption, the system operates at the target power consumption. This increased power consumption compared to the requested power consumption helps prevent battery overcharging and improves battery safety. Furthermore, the increased power consumption allows for better vehicle warming in winter, enhancing passenger comfort. Attached Figure Description

[0041] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0042] Figure 1 This is a schematic flowchart illustrating a range extender power control method for a vehicle according to one embodiment of this application.

[0043] Figure 2 for Figure 1 The flowchart shown is a schematic diagram of the warm-up control method.

[0044] Figure 3 This is a flowchart illustrating one implementation of step 24 in the warm-up control method.

[0045] Figure 4 A schematic flowchart of a vehicle range extender power control method provided in another embodiment of this application.

[0046] Figure 5 for Figure 4 The diagram shows a flowchart of the demand response control method.

[0047] Figure 6 This is a structural block diagram of a vehicle according to one embodiment of this application.

[0048] Figure 7 for Figure 6 The diagram shows the structural block diagram of the power control system. Detailed Implementation

[0049] This application provides a power control method for a vehicle's range extender, a vehicle, and a computer-readable storage medium. The power control method for a vehicle's range extender, the vehicle, and the computer-readable storage medium of this application will be described in detail below with reference to the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0050] Please refer to Figure 1 , Figure 1 This is a schematic flowchart of a range extender power control method 10 for a vehicle according to one embodiment of this application. Figure 1 As shown, the vehicle range extender power control method 10 provided in this application embodiment includes step 11.

[0051] Step 11: If the vehicle startup information meets the warm-up startup conditions, execute warm-up control method 20. By determining whether the vehicle startup information meets the warm-up startup conditions, if the vehicle startup information meets the warm-up startup conditions, execute warm-up control method 20. In this way, warm-up control method 20 can be executed when the vehicle needs to warm up, and not executed when the vehicle does not need to warm up, thus improving the flexibility of vehicle control.

[0052] Please refer to Figure 2 , Figure 2 for Figure 1 The flowchart of the warm-up control method 20 shown is as follows: Figure 2 As shown, the warm-up control method 20 includes steps 21 to 23.

[0053] Step 21: Control the vehicle's range extender to output power according to the initial output power. The initial output power is the smaller of the range extender's output power at the current temperature and the design power of the vehicle's heating system.

[0054] The output power of the range extender at the current temperature is the maximum power value that the engine of the range extender can output at the current temperature. This maximum power value is related to temperature; as the temperature increases, the maximum power value increases. This maximum power value can be obtained from the engine MAP chart or by looking up a table. The design power of the vehicle's heating system is the maximum power consumption of the vehicle's heating system, that is, the total power consumed when all the vehicle's heating systems are turned on and running at maximum power. This value is fixed after the model and specifications of the heating system are determined.

[0055] In this way, by ensuring that the initial output power does not exceed the range extender's output power at the current temperature, the engine's capacity limit at the current temperature is avoided, thus preventing engine overload or operation under adverse conditions. The initial output power also does not exceed the design power of the vehicle's heating system, preventing the heating system from failing to fully utilize the range extender's output power when the battery does not require charging, which could lead to battery overcharging and compromise battery safety.

[0056] Step 22: If the rechargeable power of the vehicle's power battery is not greater than the initial output power and the heating equipment is in the off state, control the heating equipment to turn on and control the heating equipment to operate according to the target power consumption of the heating equipment, where the target power consumption is the difference between the initial output power and the rechargeable power.

[0057] During warm-up, the range extender's output power flows in two directions: first, it charges the battery, and second, it supplies power to the vehicle's heating system. As long as the sum of the power consumed by the heating system and the power supplied to the battery equals the range extender's output power, there will be no waste of the range extender's output power.

[0058] If the rechargeable power of the vehicle's battery is no greater than the initial output power, and the heating system is off, the system is controlled to turn on and operate at its target power consumption, which is the difference between the initial output power and the rechargeable power. In this way, the heating system can consume the portion of the range extender's output power that exceeds the battery's rechargeable power, preventing overcharging of the battery. Furthermore, the heating system warms the vehicle, improving the comfort of the passengers.

[0059] Step 23: If the rechargeable power of the vehicle's power battery is not greater than the initial output power, the heating equipment is in the on state, and the heating equipment is controlled to operate according to the greater of the target power consumption and the requested power of the heating equipment.

[0060] Therefore, if the requested power of the heating equipment exceeds its target power consumption, controlling the heating equipment to operate at the requested power can meet the vehicle's heating needs while preventing overcharging of the power battery. If the requested power of the heating equipment does not exceed its target power consumption, controlling the heating equipment to operate at the target power consumption. Increasing the power consumption of the heating equipment compared to its requested power consumption can prevent overcharging of the power battery and improve its safety performance. Furthermore, increasing the power consumption of the heating equipment can better warm the vehicle in winter, improving the comfort of the passengers.

[0061] In some embodiments, the warm-up control method 20 further includes step 24, dynamically adjusting the output power of the range extender. Please refer to... Figure 3 , Figure 3 This is a flowchart illustrating one implementation of step 24 in the warm-up control method 20. (Example) Figure 3 As shown, step 24 includes steps 241 to 243.

[0062] Step 241: Obtain the actual power consumption of the heating equipment, the actual charging power of the power battery, and the actual output power of the range extender.

[0063] The actual power consumption of heating equipment may be the same as or different from its design power consumption. The design power consumption of the heating equipment is the power consumption designed for operation when implementing warm-up control method 20. According to... Figure 1 It is known that the power consumption is the requested power of the heating equipment in some cases and the target power consumption in others. However, regardless of whether it is the requested power or the target power consumption, in the actual operation of the vehicle, if the heating equipment malfunctions or there is a communication failure, the heating equipment will not operate according to the designed power consumption. Therefore, it is necessary to obtain the actual power consumption of the heating equipment in real time.

[0064] Similarly, it is also necessary to obtain the actual charging power of the power battery and the actual output power of the range extender in real time to avoid the deviation between the actual charging power of the power battery and the rechargeable power of the power battery, and the deviation between the actual output power of the range extender and the control output power of the range extender, which could lead to overcharging of the power battery or waste of the output power of the range extender, or failure to maximize the warm-up speed.

[0065] Step 242: If the sum of the actual power consumption of the heating equipment and the actual charging power of the power battery is greater than the actual output power of the range extender, control the range extender to increase its output power. Increasing the output power can accelerate the temperature rise of the coolant in the engine of the range extender, improve the warm-up effect, and avoid the engine warm-up time being too long, which would affect the range extender's ability to generate electricity quickly and efficiently.

[0066] Step 243: If the sum of the actual power consumption of the heating equipment and the actual charging power of the power battery is not greater than the output power of the range extender, control the range extender to reduce its output power. Controlling the range extender to reduce its output power can avoid overcharging the power battery or wasting the range extender's output power.

[0067] The range extender's output power is controlled to increase, but the adjusted output power does not exceed the range extender's maximum output power at the current temperature, nor does it exceed the heating system's design power. This avoids exceeding the engine's capacity limit at the current temperature, thus preventing engine overload or operation under adverse conditions. It also prevents the heating system from failing to fully utilize the range extender's output power when the battery does not require charging, which could lead to battery overcharging and compromise battery safety.

[0068] Control the range extender to reduce its output power. The adjusted output power should not be less than the power of the range extender when it is running at the lower speed limit, so as to maintain the stable operation of the range extender and avoid frequent start-stop of the range extender.

[0069] In this embodiment, the rechargeable power of the power battery is the sum of the measured rechargeable power of the power battery and its overcharge power value. By setting the overcharge power value, i.e., the overcharge threshold, when the power supplied by the range extender to charge the battery exceeds the sum of the measured rechargeable power and the overcharge power value, the power battery is at risk of overcharging. The sum of the measured rechargeable power and the overcharge power value of the power battery is the maximum power that the power battery can accept without overcharging. In this way, the output power of the range extender can be maximized while avoiding battery overcharging. It also allows increasing the output power of the range extender without wasting its output power, enabling the engine of the range extender to run at a higher speed and improving warm-up efficiency.

[0070] Please refer to Figure 4 , Figure 4 This is a schematic flowchart of a vehicle range extender power control method 10 provided for another embodiment of this application. Figure 4 As shown, the power control method 10 also includes step 12.

[0071] Step 12: If the vehicle operating information meets the warm-up termination conditions, execute demand response control method 30. Thus, after warm-up is complete, warm-up control method 20 can be terminated, and demand response control method 30 can be executed. This allows different control methods to be used for different vehicle states, improving the flexibility of vehicle control and enhancing overall vehicle performance.

[0072] In some embodiments, the temperature of the coolant in the engine of the range extender is monitored in real time. When the temperature of the coolant in the engine of the range extender exceeds a certain temperature value, it is determined that the vehicle operating information meets the warm-up termination condition. The principle for setting this temperature value is the lowest coolant temperature threshold at which the range extender can achieve its nominal maximum power generation (or close to its maximum efficiency range). For example, this temperature value can be set to 60°C or 70°C. When this temperature value is reached, the system considers the engine to be in good working condition. In some other embodiments, this temperature value can also be set to other values, which are not limited in this application.

[0073] Please refer to Figure 5 , Figure 5 for Figure 4 The flowchart of demand response control method 30 is shown below. Figure 5 As shown, the demand response control method 30 includes steps 31 to 33.

[0074] Step 31: Obtain the SOC of the power battery and the vehicle's total power requirement.

[0075] Step 32: Determine the target output power of the range extender based on the SOC of the power battery and the vehicle's overall power requirements.

[0076] Step 33: Control the range extender to operate according to the target output power.

[0077] The State of Charge (SOC) of a power battery refers to its state of charge, which is the proportion of the battery's current remaining charge to its total capacity, directly reflecting the battery's "energy reserve capacity." If the SOC is too high, it indicates that the power battery has sufficient reserve capacity, and the range extender can reduce its output or even stop, prioritizing the use of the power battery for power and avoiding frequent start-stop cycles. If the SOC is too low, it indicates that the power battery is close to being depleted, and the range extender needs to start and increase its output power to charge the power battery, avoiding over-discharge and damage to the battery.

[0078] The vehicle's total power requirement refers to the total power required by all loads, including the drive motor and onboard electrical components, under the vehicle's current operating conditions (such as acceleration, hill climbing, constant speed driving, and air conditioning operation). This parameter directly determines the minimum power output of the range extender required to work in conjunction with the battery to meet the current load.

[0079] In this patent application, by executing the demand response control method 30 after the warm-up period, the target output power of the range extender can be determined based on the SOC of the power battery and the overall power demand of the vehicle. This allows the power battery and range extender to work together to meet the overall power demand during vehicle operation, thereby improving the vehicle's driving performance. It is understood that the demand response control method 30 is a commonly used power control method in related technologies when the vehicle does not require warm-up. Those skilled in the art can determine the target output power of the range extender based on the SOC of the power battery and the overall power demand of the vehicle.

[0080] In this embodiment, the power control method further includes: if the rechargeable power of the power battery is greater than the initial output power, executing the demand response control method 30. At this time, the power battery can fully absorb the initial output power of the range extender, with a remaining margin. There is no problem of overcharging the power battery, nor is there a problem of wasted output power from the range extender. Therefore, there is no need to share the output power of the range extender by turning on the heating equipment. Whether the heating equipment is turned on and its power level are manually controlled by the driver, operating according to the driver's requested power, and are not constrained by the warm-up control method 20.

[0081] In this embodiment of the application, step 23, controlling the heating equipment to operate according to the greater of the target power consumption and the requested power of the heating equipment, includes:

[0082] If the rechargeable power of the vehicle's battery is not greater than the initial output power, the heating system is on, and the requested power of the heating system is greater than the target power consumption, the heating system is controlled to operate at the requested power. After controlling the heating system to operate at the requested power, the power control method also includes:

[0083] Implement demand response control method 30.

[0084] If the rechargeable power of the vehicle's battery is not greater than the initial output power, and the heating system is on, the requested power of the heating system exceeds the target power consumption, so the heating system is controlled to operate at the requested power. When the heating system operates at the requested power, the sum of the heating system's power consumption and the rechargeable power of the battery exceeds the initial output power of the range extender. Demand response control method 30 is then executed, determining the range extender's output power based on the total power demand and the battery's state of charge (SOC). In this way, the vehicle's heating needs can be met, and the battery can be charged according to its rechargeable power.

[0085] In other embodiments, after controlling the heating equipment to operate at the requested power, the power control method further includes: controlling the charging power of the power battery to be no greater than the rechargeable power of the power battery, wherein the difference between the charging power and the rechargeable power of the power battery is equal to the difference between the target power consumption and the requested power. Thus, the heating demand of the vehicle can be met by reducing the power charging power to the power battery, and the warm-up control method 20 continues to be executed.

[0086] In this embodiment of the application, the vehicle range extender power control method 10 further includes:

[0087] Obtain the vehicle's total power demand and the output power of the power battery.

[0088] If the difference between the vehicle's total power demand and the power output of the battery is greater than the initial output power, demand response control method 30 is executed.

[0089] Thus, when the difference between the total power demand of the vehicle and the output power of the power battery is greater than the initial output power, the output power of the range extender can be determined by executing the demand response control method 30, which can meet the power demand of the vehicle and maintain the normal operation of the vehicle.

[0090] Before the vehicle operating information meets the warm-up termination condition, if the difference between the vehicle's total power demand and the power battery's output power is greater than the initial output power, demand response control method 30 is executed. If the difference between the vehicle's total power demand and the power battery's output power is not greater than the initial output power, warm-up control method 20 is executed. By dynamically monitoring the relationship between the difference between the vehicle's total power demand and the power battery's output power and the initial output power, and based on this relationship, demand response control method 30 and warm-up control method 20 are dynamically switched.

[0091] In some embodiments, if the vehicle startup information meets the warm-up startup conditions, the warm-up control method 20 is executed, including:

[0092] If the ambient temperature is below the first temperature limit, the coolant temperature of the range extender is below the second temperature limit, and the battery temperature is below the third temperature limit, warm-up control method 20 is executed. When the ambient temperature is below the first temperature limit, the ambient temperature is relatively low. If the coolant temperature of the range extender's engine is below the second temperature limit, it indicates that the engine needs to warm up. The second temperature limit can be set to 5℃ or 10℃, with the specific value determined based on engine characteristics and vehicle design.

[0093] If the battery temperature is below the third temperature limit, it indicates that the vehicle has been idle for a relatively long time, causing the battery temperature to drop. For commercial vehicles, they are typically idle overnight and started in the morning. When the battery temperature is below the third temperature limit, it corresponds to the vehicle being started for the first time in the morning, with few or no passengers, only the driver. Executing warm-up control method 20 at this time can reduce the number of people affected by vehicle noise during the warm-up control method 20. After the vehicle has been running for a period of time after starting, and then idled briefly before starting again, even if the ambient temperature is below the first temperature limit and the range extender coolant temperature is below the second temperature limit, warm-up control method 20 will not be executed. This avoids the noise from warm-up control method 20 affecting passengers.

[0094] In other embodiments, if the date information indicates winter, the temperature of the coolant in the range extender is less than a second temperature limit, or the vehicle's idle time is greater than a first time limit, the warm-up control method 20 is executed.

[0095] After the vehicle is powered on, it is determined whether the vehicle's idle time exceeds the first time limit. If it exceeds the first time limit, the vehicle controller will determine whether it is winter based on the vehicle's time information. If it is winter, the vehicle range extender's engine coolant temperature will be determined whether it is below the second temperature limit. If it is below the second temperature limit, the vehicle's starting information will be determined to meet the warm-up starting conditions.

[0096] By using date information instead of ambient temperature data, not only can temperature sensors be saved, but also the impact of sensor malfunction or inaccurate readings on judgment can be avoided. For example, if the current month is between November and April of the following year, it can be determined that the current period is winter.

[0097] By determining whether the vehicle's idle time exceeds the first time limit, if the idle time exceeds the first time limit, there are no passengers or few passengers on the corresponding vehicle, which can reduce or avoid the impact of noise generated by the warm-up control method 20 on passengers.

[0098] In other embodiments, determining whether it is the first power-on of the day can replace determining whether the vehicle's idle time exceeds the first time limit. This application does not impose any limitations on this.

[0099] This application, in another aspect, provides a vehicle, Figure 6 This is a structural block diagram of a vehicle as shown in one embodiment. Figure 6 As shown, vehicle 1 includes range extender 2, power battery 3, heating equipment 4 and power control system 5. Power control system 5 is electrically connected to range extender 2, power battery 3, heating equipment 4. Power control system 5 includes memory, processor and program stored in memory and run on processor. When processor executes program, range extender power control method 10 is implemented.

[0100] In other implementations, the vehicle includes a telematics unit, a vehicle controller, a methanol range extender system, an engine controller, a power battery management system, and an in-vehicle thermal management controller. The vehicle controller includes a power control system 5. The telematics unit is responsible for acquiring current time information to determine the season; for example, based on a preset time period, such as November to April of the following year, it is determined to be winter. The vehicle controller, as the core of vehicle control, receives seasonal information from the telematics unit, real-time temperature data from the engine coolant temperature sensor of the engine controller, rechargeable power information of the power battery from the power battery management system, and actual power consumption information of the heating equipment from the in-vehicle thermal management controller. It then sends control commands to the methanol range extender system and the in-vehicle thermal management controller to adjust the output power of the methanol range extender system and the power consumption of the heating equipment.

[0101] Please refer to Figure 7 , Figure 7 for Figure 6 The block diagram of the power control system 5 shown is as follows: Figure 7 As shown, the power control system 5 includes a memory, a processor 51, and a program stored in the memory and executable on the processor. When the processor executes the program, it implements the vehicle's range extender power control method 10. Figure 7 In the illustrated embodiments, the power control system 5 may include a computer-readable storage medium 52, which may store a program that can be invoked by a processor 51, and may include a non-volatile storage medium. In some embodiments, the power control system 5 may include memory 53 and an interface 54. In some embodiments, the power control system 5 may also include other hardware depending on the specific application.

[0102] This application, in another aspect, provides a computer-readable storage medium on which a program is stored, which, when executed, implements a range extender power control method 10 for a vehicle. In some embodiments, it may take the form of a computer program product implemented on one or more computer-readable storage media 52 (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing program code. The computer-readable storage medium 52 includes permanent and non-permanent, removable and non-removable media, and information storage can be implemented by any method or technology. The information may be computer-readable instructions, data structures, program modules, or other data. Examples of computer-readable storage media 52 include, but are not limited to: phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, read-only optical disc read-only memory (CD-ROM), digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transfer medium that can be used to store information that can be accessed by a computing device.

[0103] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0104] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A power control method for a vehicle range extender, characterized in that, include: If the vehicle startup information meets the warm-up startup conditions, the warm-up control method is executed, which includes: The range extender of the vehicle is controlled to output power according to an initial output power; wherein the initial output power is the smaller of the output power of the range extender at the current temperature and the design power of the vehicle's heating system. If the rechargeable power of the vehicle's power battery is not greater than the initial output power, and the heating device is in a closed state, control the heating device to turn on, and control the heating device to operate according to the target power consumption of the heating device, wherein the target power consumption is the difference between the initial output power and the rechargeable power; If the rechargeable power of the vehicle's power battery is not greater than the initial output power, the heating device is in the on state, and the heating device is controlled to operate according to the greater of the target power consumption and the requested power of the heating device.

2. The range extender power control method according to claim 1, characterized in that, The warm-up control method further includes: Obtain the actual power consumption of the heating equipment, the actual charging power of the power battery, and the actual output power of the range extender; If the sum of the actual power consumption of the heating equipment and the actual charging power of the power battery is greater than the actual output power of the range extender, the range extender is controlled to increase its output power. If the sum of the actual power consumption of the heating equipment and the actual charging power of the power battery is not greater than the output power of the range extender, the range extender is controlled to reduce its output power.

3. The range extender power control method according to claim 2, characterized in that, The output power of the range extender is not less than the power of the range extender when it is running at the lower speed limit, and is not greater than the output power of the range extender at the current temperature, nor greater than the design power of the heating equipment.

4. The range extender power control method according to claim 1, characterized in that, The rechargeable power of the power battery is the sum of the measured rechargeable power of the power battery and the overcharge power value of the power battery.

5. The range extender power control method according to claim 1, characterized in that, The power control method further includes: If the vehicle operation information meets the warm-up termination conditions, the demand response control method is executed, which includes: Obtain the SOC of the power battery and the total power requirement of the vehicle; The target output power of the range extender is determined based on the SOC of the power battery and the vehicle's overall power requirements. Control the range extender to operate according to the target output power.

6. The range extender power control method according to claim 5, characterized in that, The power control method further includes: If the rechargeable power of the power battery is greater than the initial output power, the demand response control method is executed.

7. The range extender power control method according to claim 5, characterized in that, The control of the heating equipment to operate according to the greater of the target power consumption and the requested power of the heating equipment includes: If the rechargeable power of the vehicle's power battery is not greater than the initial output power, the heating device is in the on state. If the requested power of the heating device is greater than the target power consumption, the heating device is controlled to operate according to the requested power. After controlling the heating equipment to operate at the requested power, the power control method further includes: Execute the aforementioned demand response control method; or The charging power of the power battery is controlled to be no greater than the rechargeable power of the power battery, and the difference between the charging power and the rechargeable power of the power battery is equal to the difference between the target power consumption and the requested power.

8. The range extender power control method according to claim 5, characterized in that, The vehicle range extender power control method also includes: Obtain the total power demand of the vehicle and the output power of the power battery; If the difference between the total power demand of the vehicle and the output power of the power battery is greater than the initial output power, the demand response control method is executed.

9. The range extender power control method according to claim 1, characterized in that, If the vehicle startup information meets the warm-up startup conditions, the warm-up control method is executed, including: If the ambient temperature is lower than the first temperature limit, the temperature of the coolant in the range extender is lower than the second temperature limit, and the temperature of the power battery is lower than the third temperature limit, the warm-up control method is executed. or If the date information indicates winter, the temperature of the coolant in the range extender is less than the second temperature limit, or the idle time of the vehicle is greater than the first time limit, the warm-up control method is executed.

10. A vehicle, characterized in that, The device includes a range extender, a power battery, a heating device, and a power control system. The power control system is electrically connected to the range extender, the power battery, and the heating device. The power control system includes a memory, a processor, and a program stored in the memory and executable on the processor. When the processor executes the program, it implements the range extender power control method as described in any one of claims 1-9.

11. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a program that, when executed, implements the range extender power control method as described in any one of claims 1-9.

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