Vehicle power management method, system, electronic device and storage medium

Abstract

The present application provides a vehicle power management method, system, electronic device, and storage medium, including obtaining the current power of the vehicle as a first power and the historical power of the vehicle before a preset time period; if the first power is less than the historical power and the first power is less than or equal to a preset threshold, obtaining the reserved power generation power of the vehicle's range extender to adjust the discharge power of the battery to control the range extender to release the reserved power generation power to charge the vehicle; after the vehicle charging reaches a preset time period, obtaining the current power of the vehicle as a second power; if the second power is less than or equal to the first power, limiting the thermal management power output by the thermal management module and the driving power output by the drive module according to preset vehicle energy management rules and controlling the range extender to output at a target compensation power to release the compensation power to charge the vehicle. This effectively alleviates the pressure on the vehicle battery and ensures that the power battery power does not continue to decline.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a vehicle power management method, system, electronic device and storage medium. Background Art

[0002] With the development of transportation technology and the awakening of environmental protection and energy-saving awareness, people's demand for new energy vehicles is gradually increasing. In order to improve the competitiveness of new energy vehicles, the performance of new energy vehicles in all aspects is also gradually improving.

[0003] As we all know, the power battery of new energy vehicles is a key high-voltage component, especially for pure electric vehicles and extended-range electric vehicles. The state of the power battery can have a decisive impact on the performance of the entire vehicle. Correspondingly, the battery charge and cell temperature also have a decisive impact on the battery performance. When the charge approaches 0, the driving experience of the entire vehicle will be very poor, and it may even break down.

[0004] Therefore, in order to prevent the power battery from continuously decreasing in certain scenarios, there is an urgent need for a method to prevent the power of the extended-range electric vehicle from continuously decreasing when the power is extremely low, so as to provide users with a safe and secure driving experience. Summary of the Invention

[0005] Based on this, it is necessary to provide a method, system, electronic device and storage medium for vehicle power management to address the above technical problems, so as to avoid the situation where the vehicle power continues to lose power after dropping to the minimum allowable power level.

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

[0007] Obtaining a current power level of the vehicle as a first power level and a historical power level of the vehicle before a preset time period;

[0008] If the first power level is less than the historical power level and the first power level is less than or equal to a preset threshold, obtaining the reserved power generation power of the vehicle's range extender to adjust the discharge power of the battery to control the range extender to release the reserved power generation power to charge the vehicle;

[0009] After the vehicle is charged for the preset time period, obtaining the current power level of the vehicle as a second power level;

[0010] If the second power is less than or equal to the first power, the thermal management power output by the thermal management module and the driving power output by the driving module are limited according to the preset vehicle energy management rules, and the range extender is controlled to output at the target compensation power to release the compensation power to charge the vehicle.

[0011] In some embodiments, obtaining the reserved power generation power of the vehicle's range extender to adjust the discharge power of the battery includes:

[0012] querying the reserved power generation power of the range extender according to the first power amount and a preset mapping table of the relationship between the first power amount and the reserved power generation power of the range extender;

[0013] Obtaining the power generated by the vehicle's generator and the discharge power of the battery in the vehicle;

[0014] determining, based on a difference between the power generated by the generator and the reserved power generated, that the power provided by the range extender to the battery of the vehicle is a first power;

[0015] The discharge power of the battery is determined according to the sum of the first power and the discharge power of the battery.

[0016] In some embodiments, the thermal management power includes cooling power and heating power, and the compensation power includes a first compensation power and a second compensation power.

[0017] According to preset vehicle energy management rules, the thermal management power output by the thermal management module and the driving power output by the driving module are limited, and the range extender is controlled to output at a target compensation power to release the compensation power to charge the vehicle, including:

[0018] Obtaining power consumption of a DC switching system of a vehicle;

[0019] determining the thermal management available power according to the discharge power of the battery, the power consumption of the DC conversion system, and the power generation power of the generator;

[0020] determining a first limiting coefficient according to a ratio of the second electrical quantity to the preset threshold;

[0021] Obtaining a maximum power of an air-conditioning compressor of the vehicle, and determining a first cooling limit power according to the maximum power of the air-conditioning compressor and a first limit coefficient;

[0022] determining a target cooling limit power according to a smaller value of the first cooling limit power and the thermal management available power;

[0023] The cooling power in the thermal management power is limited according to the target cooling limit power to release the first compensation power for charging the vehicle.

[0024] In some embodiments, obtaining actual cooling power consumption of the vehicle;

[0025] determining a first heating limit power according to a difference between the thermal management available power and the actual cooling power consumption;

[0026] Obtaining a maximum power of an electric heating controller of the vehicle, and determining a second heating limit power according to the maximum power of the electric heating controller and the first limit coefficient;

[0027] determining a target heating limit power according to a smaller value of the first heating available power and the second heating limit power;

[0028] The heating power in the thermal management power is limited according to the target heating limit power to release the second compensation power for charging the vehicle.

[0029] In some embodiments, the compensation power further includes a third compensation power, and the step of limiting the thermal management power output by the thermal management module and the driving power output by the driving module according to a preset vehicle energy management rule and controlling the range extender to output at the target compensation power to release the compensation power to charge the vehicle includes:

[0030] Obtain the actual heating power consumption of the vehicle;

[0031] determining a first driving available power according to the power consumption of the DC conversion system, the actual cooling power consumption, the actual heating power consumption, the discharge power of the battery, and the power generation power of the generator;

[0032] Obtaining a maximum output power of a driving engine of the vehicle, and determining a second driving available power based on the maximum output power of the driving engine and the first limiting coefficient;

[0033] determining a target driving available power according to a smaller value of the first driving available power and the second driving available power;

[0034] The driving power is limited according to the target driving available power to release the third compensation power for charging the vehicle.

[0035] In some embodiments, limiting the thermal management power output by the thermal management module and the driving power output by the driving module according to preset vehicle energy management rules and controlling the range extender to output at the target compensation power to release the compensation power to charge the vehicle includes:

[0036] Obtain the actual power generated by the vehicle's range extender;

[0037] determining a second limiting coefficient according to a difference between 2 and a ratio of the second electrical quantity to the preset threshold;

[0038] determining a pending compensation power of the range extender according to the second limiting coefficient and the actual generated power of the range extender;

[0039] Obtaining the maximum charging power of the battery in the vehicle, and determining the target compensation power of the range extender based on the smaller value of the to-be-determined compensation power and the maximum power generation power of the range extender;

[0040] The range extender is controlled to generate electricity according to the target compensation power to release a fourth compensation power to charge the vehicle.

[0041] In some embodiments, obtaining the actual power generated by the range extender of the vehicle includes:

[0042] Get the vehicle's speed;

[0043] The actual power generated by the range extender is determined according to the vehicle speed and the second power.

[0044] In a second aspect, the present application provides a vehicle power management system, characterized in that the system includes:

[0045] a data acquisition module, configured to acquire a current power level of the vehicle as a first power level and a historical power level of the vehicle before a preset time period;

[0046] a data processing module, configured to obtain a reserved power generation power of a range extender of the vehicle to adjust a discharge power of a battery so as to control the range extender to release the reserved power generation power when the first power level is less than the historical power level and the first power level is less than or equal to a preset threshold;

[0047] a battery charging module, configured to charge the vehicle according to the released reserved power;

[0048] The data acquisition module is further configured to obtain the current power level of the vehicle as a second power level after the vehicle has been charged for the preset time period;

[0049] The data processing module is further configured to, when the second electrical quantity is less than or equal to the first electrical quantity, limit the thermal management power output by the thermal management module and the driving power output by the driving module according to preset vehicle energy management rules, and control the range extender to output at the target compensation power, so as to release the compensation power;

[0050] The battery charging module is further used to charge the vehicle according to the compensation power.

[0051] In a third aspect, the present application provides an electronic device, comprising:

[0052] one or more processors;

[0053] and a memory associated with the one or more processors, the memory being configured to store program instructions, wherein the program instructions, when read and executed by the one or more processors, perform the following operations:

[0054] Obtaining a current power level of the vehicle as a first power level and a historical power level of the vehicle before a preset time period;

[0055] If the first power level is less than the historical power level and the first power level is less than or equal to a preset threshold, obtaining the reserved power generation power of the vehicle's range extender to adjust the discharge power of the battery to control the range extender to release the reserved power generation power to charge the vehicle;

[0056] After the vehicle is charged for the preset time period, obtaining the current power level of the vehicle as a second power level;

[0057] If the second power is less than or equal to the first power, the thermal management power output by the thermal management module and the driving power output by the driving module are limited according to the preset vehicle energy management rules, and the range extender is controlled to output at the target compensation power to release the compensation power to charge the vehicle.

[0058] In a fourth aspect, the present application further provides a computer-readable storage medium, wherein the storage medium stores a computer program, and the computer program causes a computer to perform the following operations:

[0059] Obtaining a current power level of the vehicle as a first power level and a historical power level of the vehicle before a preset time period;

[0060] If the first power level is less than the historical power level and the first power level is less than or equal to a preset threshold, obtaining the reserved power generation power of the vehicle's range extender to adjust the discharge power of the battery to control the range extender to release the reserved power generation power to charge the vehicle;

[0061] After the vehicle is charged for the preset time period, obtaining the current power level of the vehicle as a second power level;

[0062] If the second power is less than or equal to the first power, the thermal management power output by the thermal management module and the driving power output by the driving module are limited according to the preset vehicle energy management rules, and the range extender is controlled to output at the target compensation power to release the compensation power to charge the vehicle.

[0063] The beneficial effects achieved by this application are:

[0064] The present application provides a vehicle power management method, including obtaining the current power of the vehicle as a first power and the historical power of the vehicle before a preset time period; if the first power is less than the historical power and the first power is less than or equal to a preset threshold, obtaining the reserved power generation power of the vehicle's range extender to adjust the discharge power of the battery to control the range extender to release the reserved power generation power to charge the vehicle; after the vehicle charging reaches the preset time period, obtaining the current power of the vehicle as a second power; if the second power is less than or equal to the first power, limiting the thermal management power output by the thermal management module and the driving power output by the driving module according to the preset vehicle energy management rules and controlling the range extender to output at a target compensation power to release the compensation power to charge the vehicle. Effectively relieve vehicle battery pressure and ensure that the power battery power does not continue to decline; in extreme vehicle use scenarios, slow down the rate of power decline to ensure vehicle safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which:

[0066] Figure 1 This is a schematic diagram of a vehicle power management method provided by an embodiment of the present application;

[0067] Figure 2 This is a flow chart of the vehicle power management method provided by an embodiment of the present application;

[0068] Figure 3 This is a diagram of the vehicle power management system architecture provided by an embodiment of the present application;

[0069] Figure 4 This is a structural diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0070] To make the purpose, technical solutions, and advantages of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0071] It should be understood that in the description of this application, unless the context clearly requires otherwise, words such as "include", "comprises", and the like throughout the specification and claims should be interpreted as inclusive rather than exclusive or exhaustive; that is, as "including but not limited to".

[0072] It should also be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0073] It should be noted that the terms "S1", "S2", etc. are used only for the purpose of describing the steps and do not specifically refer to the order or sequence, nor are they used to limit this application. They are merely for the convenience of describing the method of this application and should not be understood as indicating the order of the steps. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0074] Example 1

[0075] The embodiment of the present application provides a vehicle power management method, specifically, Figure 1 As shown, the process of applying this method to prevent the power from continuously decreasing after falling below the minimum allowable power level includes:

[0076] S1. Determine the discharge power of the battery based on the reserved power generation power of the vehicle's range extender to release the reserved power to charge the vehicle.

[0077] Before executing step S1, it is necessary to determine whether the battery level of the vehicle continues to decline after falling below the minimum allowable drop level. The specific determination process includes:

[0078] The current power level of the vehicle at the current moment is obtained as the first power level and the historical power level of the vehicle before a preset time period. By comparing the historical power level with the first power level, it can be determined whether the power level of the vehicle is decreasing, wherein the preset time period can be set according to demand, such as 1s, 2s, etc.; if the first power level is less than the historical power level, it is determined that the power level of the vehicle is continuously decreasing, otherwise it is determined that the battery of the vehicle has not decreased; further, the first power level needs to be compared with a preset threshold value. If the power level of the vehicle is continuously decreasing while the first power level is less than or equal to the preset threshold value, it is determined that the battery of the previous vehicle is continuously decreasing after being lower than the minimum allowable power level; if the preset threshold value is the set minimum allowable power level, it can be set according to the size of the battery pack equipped with different models, the type of range extender and the corresponding VTS (vehicle technical specification) target.

[0079] After determining that the battery of the vehicle continues to decline after falling below the minimum allowable drop power, the remaining battery power SOC (State Of Charge) of the current preceding vehicle is obtained, which is the above-mentioned first power; according to a predetermined mapping table of the relationship between the first power and the reserved power generation power of the range extender, the reserved power generation power of the range extender is queried; taking Table 1 as an example, the preset threshold is set to 10% at this time; where X is the first power of the vehicle, and Y is the reserved power generation power. When the power is higher than 10%, no power generation power is reserved, and the value of Y is 0. When the power is less than or equal to 10%, 5 kW is reserved for charging the battery pack, and the reserved power is increased by 1 kW for every 1% drop in power, with a maximum reserved power of 10 kW.

[0080] Table 1

[0081] X 4 5 6 7 8 9 10 Y 10 10 9 8 7 6 5

[0082] Get the power P of the vehicle's generator Gcu And the discharge power P of the battery in the vehicle DisChrg , where, since the current of the generator Gcu (Generator Control Unit) is usually negative when generating electricity, the generated power P Gcu The result is a negative number, so we need to first convert the power generation P Gcu Take the smaller of the sum and 0 and then take the absolute value to get the power generation power P Gcu ; According to the power generation power of the generator and the reserved power generation power, determine the first power P1 provided by the range extender to the vehicle battery, P1 = P Gcu -P Reserve , where P Gcu is the power generated by the generator at this time, P ReserceThe reserved charging power for charging the battery pack obtained by looking up the table is P1, and the available power (i.e., the first power) provided to the battery by the range extender after deducting the reserved power is P1. DisChrg , determine the discharge power P of the battery under the action of the range extender, P = P DisChrg +P1. The battery operates according to the above calculated discharge power of the battery under the action of the range extender to ensure that the range extender can release the reserved power to the vehicle battery pack for charging first.

[0083] For example, when P DisChrg Equal to 50kw, P Gcu When the power is 50kw and Soc is 10%, P Reserve The table shows 5kw. At this time, the discharge power of the battery that can be used to drive the entire vehicle is calculated to be 95kw. That is, the reserved 5kw power generation power will not be used for the entire vehicle consumption, but will be provided to the battery pack for charging first.

[0084] S2. If the vehicle power level still decreases, the thermal management power output by the thermal management module and the driving power output by the driving module are further limited based on the preset vehicle energy management rules, and power compensation is performed to release the compensation power to charge the vehicle.

[0085] Specifically, after a preset time period, the remaining power of the vehicle at this time (i.e., the second power) is collected. If the second power is less than the first power previously obtained, it proves that after the reserved power is used to charge the vehicle, the power of the vehicle continues to decrease. At this time, the vehicle still needs to be charged to prevent the power from further decreasing. Therefore, further processing is performed based on the preset vehicle energy management rules, wherein the compensation power includes a first compensation power for limiting the release of cooling power in the thermal management power, a second compensation power for limiting the release of heating power in the thermal management power, a third compensation power for limiting the release of driving power, and a fourth management power for controlling the range extender to output at the target compensation power for release. Specifically, the processing process includes the following steps:

[0086] S21. As the power level continues to decrease, the thermal management power is gradually limited.

[0087] As the vehicle's battery level continues to decline, it is necessary to limit the thermal management power. The above thermal management power is divided into CCU (Compressor Control Unit) power and PTC power (Positive Temperature Coefficient, electric heating controller), which represent the power consumed during cooling and heating, respectively. In this implementation, they are further named cooling power and heating power.

[0088] The process of limiting thermal management power specifically includes:

[0089] Obtain the power consumption P of the vehicle's DC switching system DCDC Among them, the DC conversion system is a low-voltage electrical component of the vehicle. The vehicle's power battery pack stores high-voltage DC power. This electrical energy cannot be directly used for low-voltage equipment such as vehicle lighting, entertainment, and instruments. Therefore, a device is needed to convert high-voltage DC power into 12V low-voltage DC power to provide power for the vehicle's low-voltage equipment. This work is completed by the DCDC module in the electronic control system. DCDC can not only provide power for vehicle voltage equipment, but also charge the battery when the vehicle battery power is too low, playing the role of a "generator". According to the battery discharge power P and the DC conversion system power consumption P DCDC And the generator power P Gcu Determine the available power P for thermal management Therm , P Therm =PP DCDC -P Gcu Furthermore, the available power for thermal management can be divided into the available power for cooling P Cold and heating available power P Heat ; In general, the priority of cooling available power and heating available power is that cooling priority is higher than heating priority, so cooling available power P is allocated first. Cold , at this time P Cold =P Therm According to the ratio of the second power and the preset threshold, the first limiting coefficient k1 is determined. If the preset threshold is 10%, then The value range of k1 is [0, 1]. Get the maximum power of the vehicle's air-conditioning compressor, and calculate the maximum power of the air-conditioning compressor according to the maximum power P ccuMax and the first limiting coefficient to determine the first cooling limit power P ColdLim , P ColdLim =k1×P ccuMax ; where P ColdLim The value range is [0, P ccuMax ], and with u Cold Take the smaller one as the target cooling limit power; According to the above content, P Cold =P Therm Therefore, it can be understood that the present application limits the power P according to the first cooling ColdLim and thermal management available power P Therm and the smaller value thereof, determining the target cooling limit power; and then limiting the cooling power in the thermal management power according to the target cooling limit power to release the first compensation power to charge the vehicle, thereby preventing the vehicle power from further decreasing.

[0090] Furthermore, according to the thermal management available power P Therm / P Cold , and the actual cooling power consumption P ColdAct The difference between the first heating limit power P and the Heat , P Heat =P Cold -P ColdAct ; Get the maximum power of the vehicle's electric heating controller, and according to the maximum power P of the electric heating controller PtcMax and the first limiting coefficient k1 to determine the second heating limiting power P HeatLim , P HeatLim =k1×P PtcMax ; where P HeatLim The value range is [0, P PtcMax ]; and according to the first heating available power P Heat and the second heating limit power P HeatLim the smaller value of , determines the target heating limit power; and limits the heating power in the thermal management power according to the target heating limit power to release the second compensation power to charge the vehicle.

[0091] S22: As the battery level continues to decrease, the available driving power is further limited.

[0092] Get the actual heating power consumption P of the vehicle HeatAct ; According to the power consumption P of the DC conversion system DCDC , Actual cooling power consumption P ColdAct , Actual heating power consumption P HeatAct , the battery discharge power P and the generator power P Gcu , determine the first driving available power P Drv , where P Drv =PP DCDC -P Gcu -P ColdAct -P HeatAct ; Get the maximum output power P of the vehicle's drive motor McuMax , and determine the second drive available power P according to the maximum output power of the driving machine and the first limit coefficient k1 DrvLim , P DrvLim =k1×P McuMax , where P DrvLim The value range is [0, P McuMax ], and with P Drv Take the smaller one as the target driving available power, that is, according to the first driving available power P Drv and the second driving available power P DrvLim The target driving available power is determined by the smaller value of ; the corresponding torque control is performed according to the target driving available power to limit the driving power of the vehicle, and the third compensation power is further released to charge the vehicle.

[0093] S23. As the power level continues to decrease, power compensation is performed.

[0094] Get the actual power generation power P of the vehicle's range extender ChrgPwr And the maximum power generation power P of the range extender ChrgPwrMax , where the power generation is the result of calibration and matching based on NVH (Noise, Vibration, Harshness), fuel economy, and battery balance at different vehicle speeds as reference standards; the actual power generation of the range extender can be determined based on the obtained vehicle speed and the second battery level. The second limiting coefficient k2 is determined based on the difference between 2 and the ratio of the second battery level to the preset threshold. The value range of k2 is [1, 2]. According to the second limit coefficient k2 and the actual power generation power P of the range extender ChrgPwr , determine the range extender's pending compensation power P CmpPwr , P CmpPwr =k4×P ChrgPwr ; where P CmpPwr The value range is [0, P ChrgPwrMax ], and the smaller of the target compensation power and the current maximum allowable charging power of the battery is taken as the target compensation power, and the range extender is further controlled to generate electricity according to the final target compensation power to release the fourth compensation power to charge the vehicle.

[0095] It can be understood that there is no order of precedence for the above steps S21, S22, and S23. In some implementation scenarios, steps S21, S22, and S23 can be executed simultaneously; or step S21 can be executed first, then S22, and finally step S23; or step S22 can be executed first, then step S21, and finally step S23. Furthermore, in order to avoid waste of resources, one of steps S21, S22 and S23 can be executed first, and then the remaining power of the vehicle at this time is collected and compared with the remaining power collected previously. If the remaining power of the vehicle at this time is higher than the remaining power collected previously and is greater than or equal to the preset threshold, that is, the compensation power released by the step executed at this time has met the vehicle charging requirements, the vehicle's power no longer decreases, and there is no need to further execute other steps to release the compensation power; for example, in the scenario where step S21 is executed first, then S22, and finally step S23, after executing step S21, it is determined that the vehicle's power is still continuing to decrease, and step S22 is executed at this time. After executing step S22, the current power is greater than or equal to the preset threshold and no longer continues to decrease, and there is no need to execute step S23 at this time.

[0096] The vehicle power management method provided in the embodiment of the present application, after the vehicle power level is lower than a certain value, reserves part of the generated power to charge the battery pack to prevent the generated power of the range extender from being completely consumed; gradually limits the thermal management power to reduce power consumption; further limits the driving power to prevent the power level from continuously decreasing; adopts a power-following power generation mode to compensate for power consumption with the generated power; effectively relieves the pressure on the vehicle battery to ensure that the power battery level does not continue to decrease; and in extreme vehicle use scenarios, slows down the rate of power decrease to ensure vehicle safety.

[0097] Example 2

[0098] Corresponding to the above embodiment 1, the embodiment of the present application also provides a vehicle power management method, such as Figure 2 As shown, the details are as follows:

[0099] 2100. Obtaining a current power level of the vehicle as a first power level and a historical power level of the vehicle before a preset time period;

[0100] 2200. If the first power level is less than the historical power level and the first power level is less than or equal to a preset threshold, obtaining a reserved power generation power of a range extender of the vehicle to adjust a discharge power of the battery to control the range extender to release the reserved power generation power to charge the vehicle;

[0101] Preferably, the step of obtaining the reserved power generation power of the vehicle's range extender and determining the discharge power of the battery to release the reserved power includes:

[0102] 2210. Query the reserved power generation power of the range extender according to the first power amount and a preset mapping table of the relationship between the first power amount and the reserved power generation power of the range extender;

[0103] 2211. Obtaining the power generated by the generator of the vehicle and the discharge power of the battery in the vehicle;

[0104] 2212. Determine, based on a difference between the power generated by the generator and the reserved power generated, that the power provided by the range extender to the battery of the vehicle is a first power;

[0105] 2213. Determine the discharge power of the battery according to the sum of the first power and the discharge power of the battery.

[0106] 2300. After the vehicle is charged for the preset time period, obtaining a current power level of the vehicle as a second power level;

[0107] 2400. If the second electrical quantity is less than or equal to the first electrical quantity, the thermal management power output by the thermal management module and the driving power output by the driving module are limited according to the preset vehicle energy management rules, and the range extender is controlled to output at the target compensation power to release the compensation power to charge the vehicle.

[0108] Preferably, the thermal management power includes cooling power and heating power, and the compensation power includes a first compensation power and a second compensation power.

[0109] According to preset vehicle energy management rules, the thermal management power output by the thermal management module and the driving power output by the driving module are limited, and the range extender is controlled to output at a target compensation power to release the compensation power to charge the vehicle, including:

[0110] 2410. Obtaining power consumption of a DC switching system of a vehicle;

[0111] 2411. Determine available power for thermal management according to the discharge power of the battery, the power consumption of the DC conversion system, and the power generation power of the generator;

[0112] 2412. Determine a first limiting coefficient based on a ratio of the second electrical quantity to the preset threshold;

[0113] 2413. Obtain a maximum power of the air-conditioning compressor of the vehicle, and determine a first cooling limit power according to the maximum power of the air-conditioning compressor and a first limit coefficient;

[0114] 2414. Determine a target cooling limit power according to the smaller value of the first cooling limit power and the thermal management available power;

[0115] 2415. Limit the cooling power in the thermal management power according to the target cooling limit power to release the first compensation power to charge the vehicle.

[0116] Preferably, the method of limiting the thermal management power output by the thermal management module and the driving power output by the driving module according to preset vehicle energy management rules and limiting the range extender to output at the target compensation power to release the compensation power to charge the vehicle includes:

[0117] 2420. Obtain the actual cooling power consumption of the vehicle;

[0118] 2421. Determine a first heating limit power according to a difference between the thermal management available power and the actual cooling power consumption;

[0119] 2422. Obtain a maximum power of the electric heating controller of the vehicle, and determine a second heating limit power according to the maximum power of the electric heating controller and the first limit coefficient;

[0120] 2423. Determine a target heating limit power according to the smaller value of the first heating available power and the second heating limit power;

[0121] 2424. Limit the heating power in the thermal management power according to the target heating limit power to release the second compensation power for charging the vehicle.

[0122] Preferably, the compensation power further includes a third compensation power, and the method of limiting the thermal management power output by the thermal management module and the driving power output by the driving module according to a preset vehicle energy management rule and controlling the range extender to output at the target compensation power to release the compensation power to charge the vehicle includes:

[0123] 2430. Obtain the actual heating power consumption of the vehicle;

[0124] 2431. Determine a first driving available power according to the power consumption of the DC conversion system, the actual cooling power consumption, the actual heating power consumption, the discharge power of the battery, and the power generation power of the generator;

[0125] 2432. Obtain a maximum output power of a driving engine of the vehicle, and determine a second driving available power based on the maximum output power of the driving engine and the first limiting coefficient;

[0126] 2433. Determine a target driving available power according to the smaller value of the first driving available power and the second driving available power;

[0127] 2434. Limit the driving power according to the target driving available power to release the third compensation power to charge the vehicle.

[0128] Preferably, the method of limiting the thermal management power output by the thermal management module and the driving power output by the driving module according to preset vehicle energy management rules and controlling the range extender to output at the target compensation power to release the compensation power to charge the vehicle includes:

[0129] 2440. Obtain the actual power generated by the vehicle's range extender;

[0130] 2441. Determine a second limiting coefficient according to a difference between 2 and the ratio of the second power level to the preset threshold;

[0131] 2442. Determine the undetermined compensation power of the range extender according to the second limiting coefficient and the actual power generation power of the range extender;

[0132] 2443. Obtain the maximum charging power of the battery in the vehicle, and determine the target compensation power of the range extender based on the smaller value of the to-be-determined compensation power and the maximum power generation power of the range extender;

[0133] 2444. Control the range extender to generate electricity according to the target compensation power to release a fourth compensation power to charge the vehicle.

[0134] Preferably, obtaining the actual power generation power of the vehicle's range extender includes:

[0135] 2445. Get the vehicle speed;

[0136] 2446. Determine the actual power generated by the range extender based on the vehicle speed and the second electrical quantity.

[0137] Example 3

[0138] Corresponding to the above-mentioned embodiment 1 and embodiment 2, the embodiment of the present application further provides a vehicle power management system, such as Figure 3 As shown, the system includes:

[0139] The data acquisition module 310 is configured to acquire a current power level of the vehicle as a first power level and a historical power level of the vehicle before a preset time period;

[0140] a data processing module 320 configured to obtain a reserved power generation power of a range extender of the vehicle to adjust a discharge power of the battery so as to control the range extender to release the reserved power generation power when the first power level is less than the historical power level and the first power level is less than or equal to a preset threshold;

[0141] a battery charging module 330, configured to charge the vehicle according to the released reserved power;

[0142] The data acquisition module 310 is further configured to obtain the current power level of the vehicle as a second power level after the vehicle has been charged for the preset time period;

[0143] The data processing module 320 is further configured to, when the second power level is less than or equal to the first power level, limit the thermal management power output by the thermal management module and the driving power output by the driving module according to preset vehicle energy management rules, and control the range extender to output at the target compensation power to release the compensation power;

[0144] The battery charging module 330 is further configured to charge the vehicle according to the compensation power.

[0145] In some embodiments, the data processing module 320 is further used to query the reserved power generation power of the range extender based on the first power amount and a preset mapping table of the relationship between the first power amount and the reserved power generation power of the range extender; the data acquisition module 310 is further used to obtain the power generation power of the vehicle's generator and the discharge power of the battery in the vehicle; the data processing module 320 is further used to determine that the power provided by the range extender to the vehicle's battery is the first power based on the difference between the power generation power of the generator and the reserved power generation power; the data processing module 320 is further used to determine the discharge power of the battery based on the sum of the first power and the discharge power of the battery.

[0146] In some embodiments, the data acquisition module 310 is also used to obtain the power consumption of the vehicle's DC exchange system; the data processing module 320 is also used to determine the thermal management available power based on the discharge power of the battery, the power consumption of the DC conversion system and the power generation power of the generator; determine the first limiting coefficient based on the ratio of the second electrical quantity and the preset threshold; the data acquisition module 310 is also used to obtain the maximum power of the vehicle's air-conditioning compressor, and the data processing module 320 is also used to determine the first cooling limit power based on the maximum power of the air-conditioning compressor and the first limiting coefficient; the data processing module 320 is also used to determine the target cooling limit power based on the smaller value of the first cooling limit power and the thermal management available power; the data processing module 320 is also used to limit the cooling power in the thermal management power according to the target cooling limit power to release the first compensation power to charge the vehicle.

[0147] In some embodiments, the data acquisition module 310 is also used to obtain the actual cooling power consumption of the vehicle; the data processing module 320 is also used to determine the first heating limit power based on the difference between the thermal management available power and the actual cooling power consumption; the data acquisition module 310 is also used to obtain the maximum power of the vehicle's electric heating controller, and the data processing module 320 is also used to determine the second heating limit power based on the maximum power of the electric heating controller and the first limit coefficient; the data processing module 320 is also used to determine the target heating limit power based on the smaller value of the first heating available power and the second heating limit power; the data processing module 320 is also used to limit the heating power in the thermal management power according to the target heating limit power to release the second compensation power to charge the vehicle

[0148] In some embodiments, the data acquisition module 310 is also used to obtain the actual heating power consumption of the vehicle; the data processing module 320 is also used to determine the first driving available power based on the power consumption of the DC conversion system, the actual cooling power consumption, the actual heating power consumption, the discharge power of the battery and the power generation power of the generator; the data acquisition module 310 is also used to obtain the maximum output power of the vehicle's driving machine, and the data processing module 320 is also used to determine the second driving available power based on the maximum output power of the driving machine and the first limiting coefficient; the data processing module 320 is also used to determine the target driving available power based on the smaller value of the first driving available power and the second driving available power; the data processing module 320 is also used to limit the driving power according to the target driving available power to release the third compensation power to charge the vehicle.

[0149] In some embodiments, the data acquisition module 310 is also used to obtain the actual power generation power of the vehicle's range extender; the data processing module 320 is also used to determine the second limiting coefficient based on the difference between 2 and the ratio of the second power and the preset threshold; the data processing module 320 is also used to determine the pending compensation power of the range extender based on the second limiting coefficient and the actual power generation power of the range extender; the data acquisition module 310 is also used to obtain the maximum charging power of the battery in the vehicle, and the data processing module 320 is also used to determine the target compensation power of the range extender based on the smaller value of the pending compensation power and the maximum power generation power of the range extender; the data processing module 320 is also used to control the power generation of the range extender according to the target compensation power to release the fourth compensation power to charge the vehicle.

[0150] In some embodiments, the data acquisition module 310 is further used to obtain the vehicle speed; the data acquisition module 310 is further used to determine the actual power generation power of the range extender based on the vehicle speed and the second power.

[0151] Example 4

[0152] Corresponding to all the above embodiments, an embodiment of the present application provides an electronic device, including:

[0153] One or more processors; and a memory associated with the one or more processors, the memory being configured to store program instructions, wherein the program instructions, when read and executed by the one or more processors, perform the following operations:

[0154] Obtaining a current power level of the vehicle as a first power level and a historical power level of the vehicle before a preset time period;

[0155] If the first power level is less than the historical power level and the first power level is less than or equal to a preset threshold, obtaining the reserved power generation power of the vehicle's range extender to adjust the discharge power of the battery to control the range extender to release the reserved power generation power to charge the vehicle;

[0156] After the vehicle is charged for the preset time period, obtaining the current power level of the vehicle as a second power level;

[0157] If the second power is less than or equal to the first power, the thermal management power output by the thermal management module and the driving power output by the driving module are limited according to the preset vehicle energy management rules, and the range extender is controlled to output at the target compensation power to release the compensation power to charge the vehicle.

[0158] in, Figure 4The electronic device architecture is shown as an example, and may include a processor 410, a video display adapter 411, a disk drive 412, an input / output interface 413, a network interface 414, and a memory 420. The processor 410, the video display adapter 411, the disk drive 412, the input / output interface 413, the network interface 414, and the memory 420 may be communicatively connected via a bus 430.

[0159] Among them, the processor 410 can be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, etc., to execute relevant programs to implement the technical solution provided in this application.

[0160] The memory 420 can be implemented in the form of ROM (Read Only Memory, programmable memory), RAM (Random Access Memory, random access memory), static storage device, dynamic storage device, etc. The memory 420 can store an operating system 421 for controlling the execution of the electronic device 400, and a basic input and output system (BIOS) 422 for controlling the low-level operations of the electronic device 400. In addition, a web browser 423, a data storage management system 424, and an icon font processing system 425, etc. can also be stored. The above-mentioned icon font processing system 425 can be an application program that specifically implements the operations of the aforementioned steps in the embodiment of the present application. In short, when the technical solution provided by the present application is implemented by software or firmware, the relevant program code is stored in the memory 420 and is called and executed by the processor 410.

[0161] The input / output interface 413 is used to connect input / output modules to implement information input and output. The input / output modules can be configured as components in the device (not shown in the figure) or can be externally connected to the device to provide corresponding functions. Input devices may include a keyboard, mouse, touch screen, microphone, various sensors, etc., and output devices may include a display, speaker, vibrator, indicator light, etc.

[0162] The network interface 414 is used to connect to a communication module (not shown) to enable communication between the device and other devices. The communication module can communicate via a wired method (such as USB, network cable, etc.) or a wireless method (such as mobile network, WiFi, Bluetooth, etc.).

[0163] The bus 430 comprises a pathway for transmitting information between the various components of the device (eg, the processor 410 , the video display adapter 411 , the disk drive 412 , the input / output interface 413 , the network interface 414 , and the memory 420 ).

[0164] In addition, the electronic device 400 can also obtain information on specific collection conditions from the virtual resource object collection condition information database for use in condition judgment, etc.

[0165] It should be noted that although the above device only shows a processor 410, a video display adapter 411, a disk drive 412, an input / output interface 413, a network interface 414, a memory 420, a bus 430, etc., in a specific implementation, the device may also include other components necessary for normal execution. In addition, it will be understood by those skilled in the art that the above device may also include only the components necessary to implement the solution of the present application, and does not necessarily include all the components shown in the figure.

[0166] Example 5

[0167] Corresponding to all the above embodiments, an embodiment of the present application further provides a computer-readable storage medium, characterized in that it stores a computer program, and the computer program causes a computer to perform the following operations:

[0168] Obtaining a current power level of the vehicle as a first power level and a historical power level of the vehicle before a preset time period;

[0169] If the first power level is less than the historical power level and the first power level is less than or equal to a preset threshold, obtaining the reserved power generation power of the vehicle's range extender to adjust the discharge power of the battery to control the range extender to release the reserved power generation power to charge the vehicle;

[0170] After the vehicle is charged for the preset time period, obtaining the current power level of the vehicle as a second power level;

[0171] If the second power is less than or equal to the first power, the thermal management power output by the thermal management module and the driving power output by the driving module are limited according to the preset vehicle energy management rules, and the range extender is controlled to output at the target compensation power to release the compensation power to charge the vehicle.

[0172] Through the description of the above implementation methods, it can be seen that those skilled in the art can clearly understand that the present application can be implemented by means of software plus a necessary general hardware platform. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which can be stored in a storage medium such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for enabling a computer device (which can be a personal computer, a cloud service terminal, or a network device, etc.) to execute the methods described in various embodiments of the present application or certain parts of the embodiments.

[0173] Each embodiment in this specification is described in a progressive manner. The same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments. In particular, for system or system embodiments, since they are basically similar to method embodiments, the description is relatively simple. For relevant parts, refer to the partial description of the method embodiment. The system and system embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. A person of ordinary skill in the art can understand and implement it without expending creative work.

[0174] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A vehicle power management method, characterized in that: The method comprises: Obtaining a current power level of the vehicle as a first power level and a historical power level of the vehicle before a preset time period; If the first power level is less than the historical power level and the first power level is less than or equal to a preset threshold, obtaining the reserved power generation power of the vehicle's range extender to adjust the discharge power of the battery to control the range extender to release the reserved power generation power to charge the vehicle; After the vehicle is charged for the preset time period, obtaining the current power level of the vehicle as a second power level; If the second power level is less than or equal to the first power level, the thermal management power output by the thermal management module and the driving power output by the driving module are limited according to the preset vehicle energy management rules, and the range extender is controlled to output at the target compensation power, so as to release the compensation power to charge the vehicle; The thermal management power includes cooling power and heating power, the compensation power includes a first compensation power and a second compensation power, and the thermal management power output by the thermal management module and the driving power output by the driving module are limited according to the preset vehicle energy management rules, and the range extender is controlled to output at the target compensation power to release the compensation power to charge the vehicle, including: Obtaining power consumption of a DC switching system of a vehicle; determining the thermal management available power according to the discharge power of the battery, the power consumption of the DC conversion system, and the power generation power of the generator; determining a first limiting coefficient according to a ratio of the second electrical quantity to the preset threshold; Obtaining a maximum power of an air-conditioning compressor of the vehicle, and determining a first cooling limit power according to the maximum power of the air-conditioning compressor and a first limit coefficient; determining a target cooling limit power according to a smaller value of the first cooling limit power and the thermal management available power; The cooling power in the thermal management power is limited according to the target cooling limit power to release the first compensation power for charging the vehicle.

2. The method according to claim 1, characterized in that The obtaining of the reserved power generation power of the vehicle's range extender to adjust the discharge power of the battery includes: querying the reserved power generation power of the range extender according to the first power amount and a preset mapping table of the relationship between the first power amount and the reserved power generation power of the range extender; Obtaining the power generated by the vehicle's generator and the discharge power of the battery in the vehicle; determining, based on a difference between the power generated by the generator and the reserved power generated, that the power provided by the range extender to the battery of the vehicle is a first power; The discharge power of the battery is determined according to the sum of the first power and the discharge power of the battery.

3. The method according to claim 2, characterized in that The method of limiting the thermal management power output by the thermal management module and the driving power output by the driving module according to the preset vehicle energy management rules and controlling the range extender to output the target compensation power to release the compensation power to charge the vehicle includes: Obtain the actual cooling power consumption of the vehicle; determining a first heating limit power according to a difference between the thermal management available power and the actual cooling power consumption; Obtaining a maximum power of an electric heating controller of the vehicle, and determining a second heating limit power according to the maximum power of the electric heating controller and the first limit coefficient; determining a target heating limit power according to a smaller value of the first heating available power and the second heating limit power; The heating power in the thermal management power is limited according to the target heating limit power to release the second compensation power for charging the vehicle.

4. The method according to claim 3, characterized in that The compensation power also includes a third compensation power, which limits the thermal management power output by the thermal management module and the driving power output by the driving module according to the preset vehicle energy management rules and controls the range extender to output at the target compensation power to release the compensation power to charge the vehicle, including: Obtain the actual heating power consumption of the vehicle; determining a first driving available power according to the power consumption of the DC conversion system, the actual cooling power consumption, the actual heating power consumption, the discharge power of the battery, and the power generation power of the generator; Obtaining a maximum output power of a driving engine of the vehicle, and determining a second driving available power based on the maximum output power of the driving engine and the first limiting coefficient; determining a target driving available power according to a smaller value of the first driving available power and the second driving available power; The driving power is limited according to the target driving available power to release the third compensation power for charging the vehicle.

5. The method according to any one of claims 3-4, characterized in that: The method of limiting the thermal management power output by the thermal management module and the driving power output by the driving module according to the preset vehicle energy management rules and controlling the range extender to output the target compensation power to release the compensation power to charge the vehicle includes: Obtain the actual power generated by the vehicle's range extender; determining a second limiting coefficient according to a difference between 2 and a ratio of the second electrical quantity to the preset threshold; determining a pending compensation power of the range extender according to the second limiting coefficient and the actual generated power of the range extender; Obtaining the maximum charging power of the battery in the vehicle, and determining the target compensation power of the range extender based on the smaller value of the to-be-determined compensation power and the maximum power generation power of the range extender; The range extender is controlled to generate electricity according to the target compensation power to release a fourth compensation power to charge the vehicle.

6. The method according to claim 5, characterized in that The obtaining of the actual power generated by the range extender of the vehicle includes: Get the vehicle's speed; The actual power generated by the range extender is determined according to the vehicle speed and the second power.

7. A vehicle power management system, characterized in that: The system comprises: a data acquisition module, configured to acquire a current power level of the vehicle as a first power level and a historical power level of the vehicle before a preset time period; a data processing module, configured to obtain a reserved power generation power of a range extender of the vehicle to adjust a discharge power of a battery so as to control the range extender to release the reserved power generation power when the first power level is less than the historical power level and the first power level is less than or equal to a preset threshold; a battery charging module, configured to charge the vehicle according to the released reserved power generation; The data acquisition module is further configured to obtain the current power level of the vehicle as a second power level after the vehicle has been charged for the preset time period; The data processing module is further configured to, when the second electrical quantity is less than or equal to the first electrical quantity, limit the thermal management power output by the thermal management module and the driving power output by the driving module according to preset vehicle energy management rules, and control the range extender to output at the target compensation power, so as to release the compensation power; The battery charging module is further configured to charge the vehicle according to the compensation power; Wherein, the thermal management power includes cooling power and heating power, and the compensation power includes a first compensation power and a second compensation power; The data acquisition module is further used to acquire the power consumption of the vehicle's DC switching system; The data processing module is further configured to determine the thermal management available power based on the discharge power of the battery, the power consumption of the DC conversion system, and the power generation power of the generator; The data processing module is further configured to determine a first limiting coefficient according to a ratio of the second electrical quantity to the preset threshold; The data acquisition module is further used to obtain the maximum power of the vehicle's air-conditioning compressor, and the data processing module is further used to determine a first cooling limit power according to the maximum power of the air-conditioning compressor and a first limit coefficient; The data processing module is further configured to determine a target cooling limit power according to a smaller value of the first cooling limit power and the thermal management available power; The data processing module is further configured to limit the cooling power in the thermal management power according to the target cooling limit power to release the first compensation power for charging the vehicle.

8. An electronic device, characterized in that: The electronic device comprises: one or more processors; and a memory associated with the one or more processors, wherein the memory is used to store program instructions, and when the program instructions are read and executed by the one or more processors, the method according to any one of claims 1 to 6 is executed.

9. A computer-readable storage medium, characterized in that The computer program stores a computer program, which enables a computer to execute the method according to any one of claims 1 to 6.

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