CN116890699A - Vehicle electric quantity management method, system, electronic equipment and storage medium - Google Patents
Vehicle electric quantity management method, system, electronic equipment and storage medium Download PDFInfo
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- CN116890699A CN116890699A CN202310996083.3A CN202310996083A CN116890699A CN 116890699 A CN116890699 A CN 116890699A CN 202310996083 A CN202310996083 A CN 202310996083A CN 116890699 A CN116890699 A CN 116890699A
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- 239000004606 Fillers/Extenders Substances 0.000 claims abstract description 110
- 230000000670 limiting effect Effects 0.000 claims abstract description 96
- 238000010248 power generation Methods 0.000 claims abstract description 55
- 238000010438 heat treatment Methods 0.000 claims description 54
- 238000000034 method Methods 0.000 claims description 35
- 238000005057 refrigeration Methods 0.000 claims description 31
- 238000012545 processing Methods 0.000 claims description 29
- 238000001816 cooling Methods 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 238000005485 electric heating Methods 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 5
- 238000013507 mapping Methods 0.000 claims description 5
- 238000004590 computer program Methods 0.000 claims description 3
- 230000007423 decrease Effects 0.000 description 8
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- 238000004378 air conditioning Methods 0.000 description 3
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
- B60L58/13—Maintaining the SoC within a determined range
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
- B60L50/62—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles charged by low-power generators primarily intended to support the batteries, e.g. range extenders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The application provides a vehicle electric quantity management method, a system, electronic equipment and a storage medium, which comprise the steps of obtaining the current electric quantity of a vehicle as a first electric quantity and the historical electric quantity of the vehicle before a preset time period; if the first electric quantity is smaller than the historical electric quantity and the first electric quantity is smaller than or equal to a preset threshold value, the reserved power generation power of the range extender of the vehicle is obtained to adjust the discharge power of the battery so as to control the range extender to release the reserved power generation power to charge the vehicle; after the vehicle is charged for a preset time period, acquiring the current electric quantity of the vehicle as a second electric quantity; if the second electric quantity is smaller than or equal to the first electric quantity, limiting the thermal management power output by the thermal management module and the driving power output by the driving module according to the preset whole vehicle energy management rule, and controlling the range extender to output with the target compensation power so as to release the compensation power to charge the vehicle. Effectively alleviate vehicle battery pressure, guarantee that power battery electric quantity can not fall continually.
Description
Technical Field
The application relates to the technical field of vehicles, in particular to a vehicle electric quantity management method, a system, electronic equipment and a storage medium.
Background
Along with the development of traffic technology and the awareness of environmental protection and energy conservation, the demand of people for new energy automobiles is gradually increased, and in order to improve the competitiveness of the new energy automobiles, the performances of the new energy automobiles in all aspects are gradually improved.
As is well known, the power battery of the new energy automobile is a key high-voltage part, especially for pure electric automobile and extended range electric automobile, the state of the power battery can play a decisive role in the performance of the whole automobile, and correspondingly, the electric quantity and the electric core temperature of the battery play a decisive role in the performance of the battery, so that when the electric quantity approaches 0, the driving effect of the whole automobile is very poor, and even the riding effect of the whole automobile can possibly lie prone.
Therefore, in order to prevent the continuous decrease of the power battery in some situations, a method for preventing the continuous decrease of the power battery when the power of the extended range electric vehicle is extremely low is needed, so as to bring a safe and reliable driving experience to the user.
Disclosure of Invention
Accordingly, it is necessary to provide a method, a system, an electronic device and a storage medium for managing the vehicle electric quantity, so as to avoid the situation that the vehicle electric quantity is continuously powered down after the vehicle electric quantity is reduced to the lowest allowable power-down electric quantity.
In a first aspect, the present application provides a vehicle power management method, the method comprising:
acquiring the current electric quantity of the vehicle as a first electric quantity and the historical electric quantity of the vehicle before a preset time period;
if the first electric quantity is smaller than the historical electric quantity and the first electric quantity is smaller than or equal to a preset threshold value, the reserved power generation power of a range extender of the vehicle is obtained to adjust the discharge power of a battery so as 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, acquiring the current electric quantity of the vehicle as a second electric quantity;
and if the second electric quantity is smaller than or equal to the first electric quantity, limiting the thermal management power output by the thermal management module and the driving power output by the driving module according to a preset whole vehicle energy management rule, and controlling the range extender to output with target compensation power so as to release the compensation power to charge the vehicle.
In some embodiments, the obtaining the reserved power generation power of the range extender of the vehicle to adjust the discharge power of the battery includes:
inquiring the reserved power generation power of the range extender according to the first electric quantity and a preset relation mapping table of the first electric quantity and the reserved power generation power of the range extender;
Acquiring the power generated by a generator of the vehicle and the discharge power of a battery in the vehicle;
determining that the power provided by the range extender for a battery of the vehicle is first power according to the difference value of the generated power of the generator and the reserved generated power;
and determining the discharge power of the battery according to the sum of the first power and the discharge power of the battery.
In some embodiments, the thermal management power comprises a cooling power and a heating power, the compensation power comprises a first compensation power and a second compensation power,
limiting the thermal management power output by the thermal management module and the driving power output by the driving module according to a preset whole vehicle energy management rule, and controlling the range extender to output with target compensation power so as to release the compensation power to charge the vehicle, wherein the method comprises the following steps:
acquiring the consumption power of a direct current exchange system of a vehicle;
determining a thermal management available power according to the discharge power of the battery, the consumption power of the direct current conversion system and the generation power of the generator;
determining a first limiting coefficient according to the ratio of the second electric quantity to the preset threshold value;
obtaining the maximum power of an air conditioner compressor of a vehicle, and determining a first refrigeration limit power according to the maximum power of the air conditioner compressor and a first limit coefficient;
Determining a target refrigeration limiting power according to the smaller value of the first refrigeration limiting power and the thermal management available power;
and limiting the refrigeration power in the thermal management power according to the target refrigeration limiting power to release the first compensation power to charge the vehicle.
In some embodiments, the cooling actual power consumption of the vehicle is obtained;
determining a first heating limiting power according to the difference value between the heat management available power and the refrigeration actual consumption power;
obtaining the maximum power of an electric heating controller of the vehicle, and determining second heating limiting power according to the maximum power of the electric heating controller and the first limiting coefficient;
determining a target heating limiting power according to the smaller value of the first heating available power and the second heating limiting power;
and limiting the heating power in the thermal management power according to the target heating limiting power to release second compensation power to charge the vehicle.
In some embodiments, the compensation power further includes a third compensation power, the limiting the thermal management power output by the thermal management module, the driving power output by the driving module, and controlling the range extender to output with the target compensation power according to a preset overall vehicle energy management rule, so as to release the compensation power to charge the vehicle, including:
Acquiring the actual heating consumption power of the vehicle;
determining a first driving available power according to the consumed power of the direct current conversion system, the refrigerating actual consumed power, the heating actual consumed power, the discharging power of the battery and the generating power of the generator;
obtaining the maximum output power of a driving machine of a vehicle, and determining second driving available power according to the maximum output power of the driving machine and the first limiting coefficient;
determining a target drive available power according to a smaller value of the first drive available power and the second drive available power;
and limiting the driving power according to the target driving available power to release third compensation power to charge the vehicle.
In some embodiments, the limiting the thermal management power output by the thermal management module, the driving power output by the driving module and controlling the range extender to output with the target compensation power according to the preset whole vehicle energy management rule to release the compensation power to charge the vehicle includes:
acquiring actual power generation power of a range extender of a vehicle;
determining a second limiting coefficient according to the difference value of the ratio of 2 to the second electric quantity and the preset threshold value;
Determining undetermined compensation power of the range extender according to the second limiting coefficient and the actual power of the range extender;
obtaining the maximum charging power of a battery in a vehicle, and determining the target compensation power of the range extender according to a smaller value of the undetermined compensation power and the maximum power of the range extender;
and carrying out power generation control on the range extender according to the target compensation power so as to release fourth compensation power to charge the vehicle.
In some embodiments, the obtaining the actual power generated by the range extender of the vehicle includes:
acquiring the speed of a vehicle;
and determining the actual power generation power of the range extender according to the vehicle speed and the second electric quantity.
In a second aspect, the present application provides a vehicle power management system, comprising:
the data acquisition module is used for acquiring the current electric quantity of the vehicle as the first electric quantity and the historical electric quantity of the vehicle before a preset time period;
the data processing module is used for acquiring reserved power generation power of a range extender of the vehicle to adjust the discharge power of a battery so as to control the range extender to release the reserved power generation power when the first electric quantity is smaller than the historical electric quantity and the first electric quantity is smaller than or equal to a preset threshold value;
The battery charging module is used for charging the vehicle according to the released reserved power;
the data acquisition module is further used for acquiring the current electric quantity of the vehicle as a second electric quantity after the vehicle is charged for the preset time period;
the data processing module is further configured to limit the thermal management power output by the thermal management module and the driving power output by the driving module according to a preset whole vehicle energy management rule when the second electric quantity is smaller than or equal to the first electric quantity, and control the range extender to output with a target compensation power so as to release the compensation power;
the battery charging module is also used for charging the vehicle according to the compensation power.
In a third aspect, the present application provides an electronic device, including:
one or more processors;
and a memory associated with the one or more processors, the memory for storing program instructions that, when read for execution by the one or more processors, perform the following:
acquiring the current electric quantity of the vehicle as a first electric quantity and the historical electric quantity of the vehicle before a preset time period;
if the first electric quantity is smaller than the historical electric quantity and the first electric quantity is smaller than or equal to a preset threshold value, the reserved power generation power of a range extender of the vehicle is obtained to adjust the discharge power of a battery so as 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, acquiring the current electric quantity of the vehicle as a second electric quantity;
and if the second electric quantity is smaller than or equal to the first electric quantity, limiting the thermal management power output by the thermal management module and the driving power output by the driving module according to a preset whole vehicle energy management rule, and controlling the range extender to output with target compensation power so as to release the compensation power to charge the vehicle.
In a fourth aspect, the present application also provides a computer-readable storage medium having stored thereon a computer program that causes a computer to perform the operations of:
acquiring the current electric quantity of the vehicle as a first electric quantity and the historical electric quantity of the vehicle before a preset time period;
if the first electric quantity is smaller than the historical electric quantity and the first electric quantity is smaller than or equal to a preset threshold value, the reserved power generation power of a range extender of the vehicle is obtained to adjust the discharge power of a battery so as 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, acquiring the current electric quantity of the vehicle as a second electric quantity;
and if the second electric quantity is smaller than or equal to the first electric quantity, limiting the thermal management power output by the thermal management module and the driving power output by the driving module according to a preset whole vehicle energy management rule, and controlling the range extender to output with target compensation power so as to release the compensation power to charge the vehicle.
The beneficial effects achieved by the application are as follows:
the application provides a vehicle electric quantity management method, which comprises the steps of obtaining the current electric quantity of a vehicle as a first electric quantity and the historical electric quantity of the vehicle before a preset time period; if the first electric quantity is smaller than the historical electric quantity and the first electric quantity is smaller than or equal to a preset threshold value, the reserved power generation power of a range extender of the vehicle is obtained to adjust the discharge power of a battery so as 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, acquiring the current electric quantity of the vehicle as a second electric quantity; and if the second electric quantity is smaller than or equal to the first electric quantity, limiting the thermal management power output by the thermal management module and the driving power output by the driving module according to a preset whole vehicle energy management rule, and controlling the range extender to output with target compensation power so as to release the compensation power to charge the vehicle. The pressure of the vehicle battery is effectively relieved, and the electric quantity of the power battery is ensured not to continuously drop; under the extreme car scene, slow down the electric quantity decline rate, guarantee car safety.
Drawings
For a clearer description of the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:
FIG. 1 is a schematic diagram of a vehicle power management method according to an embodiment of the present application;
FIG. 2 is a flow chart of a method for managing vehicle power according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a vehicle power management system according to an embodiment of the present application;
fig. 4 is a block diagram of an electronic device according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be understood that throughout this specification and the claims, unless the context clearly requires otherwise, the words "comprise", "comprising", and the like, are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, it is the meaning of "including but not limited to".
It should also be appreciated that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
It should be noted that the terms "S1", "S2", and the like are used for the purpose of describing the steps only, and are not intended to be construed to be specific as to the order or sequence of steps, nor are they intended to limit the present application, which is merely used to facilitate the description of the method of the present application, and are not to be construed as indicating the sequence of steps. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.
Example 1
The embodiment of the application provides a vehicle electric quantity management method, and specifically, as shown in fig. 1, a process for preventing electric quantity from continuously decreasing after the electric quantity is lower than the lowest allowable power quantity comprises the following steps:
s1, determining the discharge power of a battery according to the reserved power generation power of the range extender of the vehicle so as to release reserved electric quantity to charge the vehicle.
Before step S1 is performed, it is determined that the battery of the vehicle is continuously lowered below the minimum allowable power level, and the specific determination process includes:
acquiring the current electric quantity of the vehicle at the current moment as a first electric quantity and the historical electric quantity of the vehicle before a preset time period, and determining whether the electric quantity of the vehicle is descending or not by comparing the historical electric quantity with the first electric quantity, wherein the preset time period can be set according to requirements, such as 1s,2s and the like; if the first electric quantity is smaller than the historical electric quantity, determining that the electric quantity of the vehicle is continuously reduced, otherwise, determining that the battery of the vehicle is not reduced; further, the first electric quantity is compared with a preset threshold value, and if the electric quantity of the vehicle is continuously reduced and is smaller than or equal to the preset threshold value, the battery of the front vehicle is determined to continuously reduce after being lower than the lowest allowable lower detection electric quantity; if the preset threshold is the lowest allowable power down detection amount, the target setting can be performed according to the battery pack sizes, the different types of range extenders and the corresponding VTS (vehicle technical specification ) of different vehicle types.
After the battery Of the vehicle is determined to continuously descend after the battery is lower than the lowest allowable descending electricity quantity, acquiring the residual battery Charge (SOC) Of the current front vehicle, namely the first electricity quantity; inquiring the reserved power generation power of the range extender according to a predetermined relation mapping table of the first electric quantity and the reserved power generation power of the range extender; taking table 1 as an example, the preset threshold is set to 10% at this time; and when the electric quantity is less than or equal to 10%, reserving 5kw to charge the battery pack, and increasing the reservation of 1kw to the maximum reservation of 10kw when the electric quantity is 1% away.
TABLE 1
| X | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| Y | 10 | 10 | 9 | 8 | 7 | 6 | 5 |
Acquiring power generation P of generator of vehicle Gcu Discharge power P of battery in vehicle DisChrg In this case, since the current level is negative when the generator Gcu (Generator Control Unit ) generates power in the normal case, the power generation P Gcu The result is a negative number, so the generated power P needs to be first calculated Gcu Taking the sum of 0 and the absolute value, and then taking the generated power P Gcu The method comprises the steps of carrying out a first treatment on the surface of the Determining first power P1, P provided by a range extender for a battery of a vehicle according to the generated power and reserved generated power of a generator 1 ＝P Gcu -P Reserve Wherein P is Gcu For the power generated by the generator at this time, P Reserce Reserved charging power for reserving battery pack for charging obtained by table lookup, P 1 The reserve power is subtracted from the available power (i.e., the first power) provided to the battery for the range extender. Based on the first power P 1 Discharge power P of battery DisChrg Determining the discharge power P of the battery under the action of the range extender, p=p DisChrg +P 1 . The battery operates according to the calculated discharging power of the battery under the action of the range extender, so that the range extender can be ensured to realize that the reserved generating power is released to a battery pack of the vehicle for charging.
For example, when P DisChrg Equal to 50kw, P Gcu At a rate of up to 50kw,when Soc is equal to 10%, P Reserve The table look-up is obtained, at the moment, the discharge power of the battery which can be used for driving the whole vehicle is calculated to be 95kw, namely, the reserved 5kw generating power is not used for the whole vehicle to consume, and the reserved 5kw generating power is preferentially provided for charging the battery pack.
And S2, if the electric quantity of the vehicle still drops, further limiting the thermal management power output by the thermal management module and the driving power output by the driving module based on a preset whole vehicle energy management rule, and performing power compensation to release the compensation power to charge the vehicle.
Specifically, the remaining power (i.e., the second power) of the vehicle at this time is collected after a preset time interval, if the second power is smaller than the first power obtained previously, it is proved that the power of the vehicle is still continuously reduced after the vehicle is charged by using the reserved power, and the vehicle is still required to be charged to prevent the further reduction of the power, so that the vehicle is further processed based on the preset overall energy management rule, wherein the compensation power includes a first compensation power limiting the release of the cooling power in the thermal management power, a second compensation power limiting the release of the heating power in the thermal management power, a third compensation power limiting the release of the driving power, and a fourth management power controlling the range extender to output with the target compensation power for release, and specifically, the processing includes the following steps:
S21, gradually limiting the thermal management power along with continuous decline of the electric quantity.
As the electric quantity of the vehicle continues to decrease, it is necessary to limit the thermal management power, which is divided into CCU (Compressor Control Unit, air conditioning compressor) power and PTC power (Positive Temperature Coefficient, electric heating controller), and represents the power consumed during cooling and heating, respectively, and is further named as cooling power and heating power in this embodiment.
The process of limiting the thermal management power specifically includes:
obtaining power consumption P of DC exchange system of vehicle DCDC Wherein, when the DC conversion system is used, the high-voltage DC is stored in the vehicle power battery pack, and the electric energy can not be directly supplied to the vehicleThe low-voltage equipment such as lighting, entertainment and instruments is directly used, so that a device is needed to convert high-voltage direct current into 12V low-voltage direct current to supply electric energy for the low-voltage equipment of the vehicle, and the work is completed by a DCDC module in an electric control system. The DCDC not only can provide electric energy for vehicle voltage equipment, but also can charge the storage battery when the electric quantity of the storage battery of the vehicle is too low, and plays a role of a generator. Based on the discharge power P of the battery and the consumption power P of the DC conversion system DCDC Power generation P of generator Gcu Determining thermal management available power P Therm ，P Therm ＝P-P DCDC -P Gcu . Further, the heat management available power can be divided into the refrigeration available power P Cold And heating available power P Heat The method comprises the steps of carrying out a first treatment on the surface of the In general, the priority level of the available cooling power and the available heating power is higher than the priority level of heating, so that the available cooling power P is preferentially distributed Cold At this time P Cold ＝P Therm . Determining a first limiting coefficient k according to the ratio of the second electric quantity to a preset threshold value 1 If the preset threshold is 10%, then Wherein k is 1 The value range of (2) is [0,1 ]]. Obtaining the maximum power of an air conditioner compressor of a vehicle, and according to the maximum power P of the air conditioner compressor ccuMax First limiting coefficient determining first refrigeration limiting power P ColdLim ，P ColdLim ＝k 1 ×P ccuMax The method comprises the steps of carrying out a first treatment on the surface of the Wherein P is ColdLim The value range of (2) is [0, P ] ccuMax ]And is connected with u Cold Taking the small as a target refrigeration limiting power; from the above, P Cold ＝P Therm It will thus be appreciated that the present application limits the power P in accordance with the first refrigeration ColdLim Thermal management available power P Therm Determining a target refrigeration limit power; and then limiting the power limit according to the target refrigerationAnd the refrigeration power in the thermal management power is processed to release the first compensation power to charge the vehicle, so that the vehicle electric quantity is prevented from being further reduced.
Further, according to the thermal management available power P Therm /P Cold And the actual power consumption P of refrigeration ColdAct Determining a first heating limit power P Heat ，P Heat ＝P Cold -P ColdAct The method comprises the steps of carrying out a first treatment on the surface of the Acquiring the maximum power of an electric heating controller of the vehicle, and according to the maximum power P of the electric heating controller PtcMax First limiting coefficient k 1 Determining a second heating limit power P HeatLim ，P HeatLim ＝k 1 ×P PtcMax The method comprises the steps of carrying out a first treatment on the surface of the Wherein P is HeatLim The value range of (2) is [0, P ] PtcMax ]The method comprises the steps of carrying out a first treatment on the surface of the And according to the first heating available power P Heat And a second heating limiting power P HeatLim Determining a target heating limit power; and limiting the heating power in the thermal management power according to the target heating limiting power to release the second compensation power to charge the vehicle.
S22, driving available power is further limited as the electric quantity continuously drops.
Obtaining the actual consumption power P of heating of the vehicle HeatAct The method comprises the steps of carrying out a first treatment on the surface of the According to the power consumption P of the DC conversion system DCDC Actual power consumption P of refrigeration ColdAct Power consumption P for heating HeatAct Discharge power P of battery and generation power P of generator Gcu Determining a first drive available power P Drv Wherein P is Drv ＝P-P DCDC -P Gcu -P ColdAct -P HeatAct The method comprises the steps of carrying out a first treatment on the surface of the Obtaining maximum output power P of driving machine of vehicle McuMax And according to the maximum output power of the driving machine and the first limiting coefficient k 1 Determining the second drive available power P DrvLim ，P DrvLim ＝k 1 ×P McuMax Wherein P is DrvLim The value range of (2) is [0, P ] McuMax ]And is connected with P Drv Taking a small value as the target drive available power, i.e. according to the first drive available power P Drv And a second driving available power P DrvLim Determining the target driveDynamic available power; and performing corresponding torque control according to the target driving available power to limit the driving power of the vehicle, and further releasing the third compensation power to charge the vehicle.
S23, carrying out power compensation along with continuous decline of the electric quantity.
Acquiring actual power P of range extender of vehicle ChrgPwr Maximum power generation P of range extender ChrgPwrMax The power generation power is a result obtained by calibration matching according to NVH (Noise, vibration, harshness, noise, vibration and harshness), fuel economy, electric quantity balance and the like of different vehicle speed sections as reference standards; and determining the actual power generation power of the range extender according to the acquired vehicle speed and the second electric quantity. Determining a second limiting coefficient k according to the difference value of the ratio of 2 to the second electric quantity and a preset threshold value 2 ，Wherein k is 2 The value range of (2) is [1,2 ]]The method comprises the steps of carrying out a first treatment on the surface of the According to the second limiting coefficient k 2 And the actual power P of the range extender ChrgPwr Determining pending compensation power P of range extender CmpPwr ，P CmpPwr ＝k 4 ×P ChrgPwr The method comprises the steps of carrying out a first treatment on the surface of the Wherein P is CmpPwr The value range of (2) is [0, P ] ChrgPwrMax ]And taking the current maximum allowable charging power of the battery as target compensation power, and further carrying out power generation control on the range extender according to the finally obtained target compensation power so as to release fourth compensation power, so as to charge the vehicle.
It will be appreciated that the steps S21, S22, S23 are not sequentially distinguished, and in some implementation scenarios, the steps S21, S22, S23 may be performed simultaneously; step S21 may be executed first, then step S22 may be executed, and finally step S23 may be executed; or step S22 is performed first, then step S21 is performed, and finally step S23 is performed. Further, in order to avoid resource waste, a certain step of steps S21, S22 and S23 may be performed first, then the remaining power of the vehicle at this time is collected and compared with the remaining power collected before, if the remaining power of the vehicle at this time is higher than the remaining power collected before and is greater than or equal to a preset threshold, that is, the compensation power released by the step performed at this time already meets the requirement of charging the vehicle, the power of the vehicle is not reduced, and no further step is required to be performed to release the compensation power; for example, in the scenario where step S21 is executed before step S22 is executed, and step S23 is executed finally, it is determined that the electric quantity of the vehicle is still continuously decreasing after step S21 is executed, step S22 is executed at this time, and after step S22 is executed, the current electric quantity is equal to or greater than the preset threshold value and is no longer continuously decreasing, at this time, step S23 is not required to be executed.
According to the vehicle electric quantity management method provided by the embodiment of the application, after the vehicle electric quantity is lower than a certain value, the battery pack is charged by reserving part of the generated power, so that the generated power of the range extender is prevented from being completely consumed; gradually limiting the thermal management power and reducing the power consumption; further limiting the driving power and preventing the continuous decline of the electric quantity; the power following power generation mode is adopted, and the power consumption is compensated by generating power; the pressure of the vehicle battery is effectively relieved, and the electric quantity of the power battery is ensured not to continuously drop; under the extreme car scene, slow down the electric quantity decline rate, guarantee car safety.
Example two
Corresponding to the first embodiment, the embodiment of the present application further provides a vehicle electric quantity management method, as shown in fig. 2, which specifically includes the following steps:
2100. acquiring the current electric quantity of the vehicle as a first electric quantity and the historical electric quantity of the vehicle before a preset time period;
2200. if the first electric quantity is smaller than the historical electric quantity and the first electric quantity is smaller than or equal to a preset threshold value, the reserved power generation power of a range extender of the vehicle is obtained to adjust the discharge power of a battery so as to control the range extender to release the reserved power generation power to charge the vehicle;
preferably, the acquiring the reserved power generation power of the range extender of the vehicle determines the discharge power of the battery to release the reserved power, and includes:
2210. inquiring the reserved power generation power of the range extender according to the first electric quantity and a preset relation mapping table of the first electric quantity and the reserved power generation power of the range extender;
2211. acquiring the power generated by a generator of the vehicle and the discharge power of a battery in the vehicle;
2212. determining that the power provided by the range extender for a battery of the vehicle is first power according to the difference value of the generated power of the generator and the reserved generated power;
2213. and determining the discharge power of the battery according to the sum of the first power and the discharge power of the battery.
2300. After the vehicle is charged for the preset time period, acquiring the current electric quantity of the vehicle as a second electric quantity;
2400. and if the second electric quantity is smaller than or equal to the first electric quantity, limiting the thermal management power output by the thermal management module and the driving power output by the driving module according to a preset whole vehicle energy management rule, and controlling the range extender to output with target compensation power so as to release the compensation power to charge the vehicle.
Preferably, the thermal management power includes a cooling power and a heating power, the compensation power includes a first compensation power and a second compensation power,
limiting the thermal management power output by the thermal management module and the driving power output by the driving module according to a preset whole vehicle energy management rule, and controlling the range extender to output with target compensation power so as to release the compensation power to charge the vehicle, wherein the method comprises the following steps:
2410. acquiring the consumption power of a direct current exchange system of a vehicle;
2411. determining a thermal management available power according to the discharge power of the battery, the consumption power of the direct current conversion system and the generation power of the generator;
2412. determining a first limiting coefficient according to the ratio of the second electric quantity to the preset threshold value;
2413. Obtaining the maximum power of an air conditioner compressor of a vehicle, and determining a first refrigeration limit power according to the maximum power of the air conditioner compressor and a first limit coefficient;
2414. determining a target refrigeration limiting power according to the smaller value of the first refrigeration limiting power and the thermal management available power;
2415. and limiting the refrigeration power in the thermal management power according to the target refrigeration limiting power to release the first compensation power to charge the vehicle.
Preferably, the limiting the thermal management power output by the thermal management module, the driving power output by the driving module and limiting the range extender to output with the target compensation power according to a preset whole vehicle energy management rule to release the compensation power to charge the vehicle includes:
2420. acquiring the actual refrigeration consumption power of the vehicle;
2421. determining a first heating limiting power according to the difference value between the heat management available power and the refrigeration actual consumption power;
2422. obtaining the maximum power of an electric heating controller of the vehicle, and determining second heating limiting power according to the maximum power of the electric heating controller and the first limiting coefficient;
2423. determining a target heating limiting power according to the smaller value of the first heating available power and the second heating limiting power;
2424. And limiting the heating power in the thermal management power according to the target heating limiting power to release second compensation power to charge the vehicle.
Preferably, the compensation power further includes a third compensation power, the limiting the thermal management power output by the thermal management module, the driving power output by the driving module and controlling the range extender to output with the target compensation power according to a preset overall vehicle energy management rule, so as to release the compensation power to charge the vehicle, and the method includes:
2430. acquiring the actual heating consumption power of the vehicle;
2431. determining a first driving available power according to the consumed power of the direct current conversion system, the refrigerating actual consumed power, the heating actual consumed power, the discharging power of the battery and the generating power of the generator;
2432. obtaining the maximum output power of a driving machine of a vehicle, and determining second driving available power according to the maximum output power of the driving machine and the first limiting coefficient;
2433. determining a target drive available power according to a smaller value of the first drive available power and the second drive available power;
2434. and limiting the driving power according to the target driving available power to release third compensation power to charge the vehicle.
Preferably, the limiting the thermal management power output by the thermal management module and the driving power output by the driving module according to a preset whole vehicle energy management rule and controlling the range extender to output with a target compensation power so as to release the compensation power to charge the vehicle includes:
2440. acquiring actual power generation power of a range extender of a vehicle;
2441. determining a second limiting coefficient according to the difference value of the ratio of 2 to the second electric quantity and the preset threshold value;
2442. determining undetermined compensation power of the range extender according to the second limiting coefficient and the actual power of the range extender;
2443. obtaining the maximum charging power of a battery in a vehicle, and determining the target compensation power of the range extender according to a smaller value of the undetermined compensation power and the maximum power of the range extender;
2444. and carrying out power generation control on the range extender according to the target compensation power so as to release fourth compensation power to charge the vehicle.
Preferably, the obtaining the actual power generated by the range extender of the vehicle includes:
2445. acquiring the speed of a vehicle;
2446. and determining the actual power generation power of the range extender according to the vehicle speed and the second electric quantity.
Example III
Corresponding to the first and second embodiments, the embodiment of the present application further provides a vehicle electric quantity management system, as shown in fig. 3, including:
the data obtaining module 310 is configured to obtain a current electric quantity of the vehicle as a first electric quantity and a historical electric quantity of the vehicle before a preset time period;
the data processing module 320 is configured to obtain a reserved power generation power of a range extender of the vehicle to adjust a discharge power of a battery to control the range extender to release the reserved power generation power when the first power is less than the historical power and the first power is less than or equal to a preset threshold;
a battery charging module 330 for charging the vehicle according to the released reserve power;
the data obtaining module 310 is further configured to obtain, after the vehicle charging reaches the preset period of time, that a current electric quantity of the vehicle is a second electric quantity;
the data processing module 320 is further configured to limit the thermal management power output by the thermal management module and the driving power output by the driving module according to a preset whole vehicle energy management rule when the second electric quantity is less than or equal to the first electric quantity, and control the range extender to output with a target compensation power so as to release the compensation power;
The battery charging module 330 is further configured to charge the vehicle according to the compensation power.
In some embodiments, the data processing module 320 is further configured to query the reserved power of the range extender according to the first electric quantity and a preset relation mapping table of the first electric quantity and the reserved power of the range extender; the data acquisition module 310 is further configured to acquire a generated power of a generator of the vehicle and a discharge power of a battery in the vehicle; the data processing module 320 is further configured to determine that the power provided by the range extender to the battery of the vehicle is the first power according to the difference between the generated power of the generator and the reserved generated power; the data processing module 320 is further configured to determine a discharge power of the battery according to a sum of the first power and the discharge power of the battery.
In some embodiments, the data acquisition module 310 is further configured to acquire power consumption of a dc switching system of the vehicle; the data processing module 320 is further configured to determine a thermal management available power according to the discharge power of the battery, the consumption power of the dc conversion system, and the generated power of the generator; determining a first limiting coefficient according to the ratio of the second electric quantity to the preset threshold value; the data acquisition module 310 is further configured to acquire a maximum power of an air-conditioning compressor of the vehicle, and the data processing module 320 is further configured to determine a first refrigeration limit power according to the maximum power of the air-conditioning compressor and a first limit coefficient; the data processing module 320 is further configured to determine a target refrigeration limit power according to the smaller value of the first refrigeration limit power and the thermal management available power; the data processing module 320 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 to charge the vehicle.
In some embodiments, the data acquisition module 310 is further configured to acquire the cooling actual power consumption of the vehicle; the data processing module 320 is further configured to determine a first heating limiting power according to a difference between the thermal management available power and the cooling actual consumption power; the data acquisition module 310 is further configured to acquire a maximum power of an electric heating controller of the vehicle, and the data processing module 320 is further configured to determine a second heating limiting power according to the maximum power of the electric heating controller and the first limiting coefficient; the data processing module 320 is further configured to determine a target heating limit power according to the smaller value of the first heating available power and the second heating limit power; the data processing module 320 is further configured to limit the heating power in the thermal management power according to the target heating limit power to release a second compensation power to charge the vehicle
In some embodiments, the data acquisition module 310 is further configured to acquire the heating actual power consumption of the vehicle; the data processing module 320 is further configured to determine a first driving available power according to the power consumption of the dc conversion system, the cooling actual power consumption, the heating actual power consumption, the discharging power of the battery, and the power generation power of the generator; the data acquisition module 310 is further configured to acquire a maximum output power of a driver of the vehicle, and the data processing module 320 is further configured to determine a second driving available power according to the maximum output power of the driver and the first limiting coefficient; the data processing module 320 is further configured to determine a target drive available power according to a smaller value of the first drive available power and the second drive available power; the data processing module 320 is further configured to limit the driving power according to the target driving available power to release a third compensation power to charge the vehicle.
In some embodiments, the data acquisition module 310 is further configured to acquire an actual power generated by a range extender of the vehicle; the data processing module 320 is further configured to determine a second limiting coefficient according to a difference value between 2 and the ratio of the second electric quantity to the preset threshold; the data processing module 320 is further configured to determine a pending compensation power of the range extender according to the second limiting coefficient and the actual power of the range extender; the data obtaining module 310 is further configured to obtain a maximum charging power of a battery in the vehicle, and the data processing module 320 is further configured to determine a target compensation power of the range extender according to a smaller value of the pending compensation power and the maximum power of the range extender; the data processing module 320 is further configured to perform power generation control on the range extender according to the target compensation power to release a fourth compensation power to charge the vehicle.
In some embodiments, the data acquisition module 310 is further configured to acquire a vehicle speed of the vehicle; the data acquisition module 310 is further configured to determine an actual power generated by the range extender according to the vehicle speed and the second electric quantity.
Example IV
Corresponding to all the embodiments described above, an embodiment of the present application provides an electronic device, including:
One or more processors; and a memory associated with the one or more processors, the memory for storing program instructions that, when read for execution by the one or more processors, perform the following:
acquiring the current electric quantity of the vehicle as a first electric quantity and the historical electric quantity of the vehicle before a preset time period;
if the first electric quantity is smaller than the historical electric quantity and the first electric quantity is smaller than or equal to a preset threshold value, the reserved power generation power of a range extender of the vehicle is obtained to adjust the discharge power of a battery so as 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, acquiring the current electric quantity of the vehicle as a second electric quantity;
and if the second electric quantity is smaller than or equal to the first electric quantity, limiting the thermal management power output by the thermal management module and the driving power output by the driving module according to a preset whole vehicle energy management rule, and controlling the range extender to output with target compensation power so as to release the compensation power to charge the vehicle.
Fig. 4 illustrates an architecture of an electronic device, which 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, among others. The processor 410, video display adapter 411, disk drive 412, input/output interface 413, network interface 414, and memory 420 may be communicatively coupled via bus 430.
The processor 410 may be implemented by a general-purpose CPU (Central Processing Unit ), a microprocessor, an application-specific integrated power unit (Application Specific Integrated Circuit, ASIC), or one or more integrated power units, etc., for executing related programs to implement the technical scheme provided by the present application.
The Memory 420 may be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory ), static storage device, dynamic storage device, etc. The memory 420 may store an operating system 421 for controlling the execution of the electronic device 400, and a Basic Input Output System (BIOS) 422 for controlling the low-level operation of the electronic device 400. In addition, a web browser 423, a data storage management system 424, an icon font processing system 425, and the like may also be stored. The icon font processing system 425 may be an application program that implements the operations of the foregoing steps in embodiments of the present application. In general, when the technical solution provided by the present application is implemented by software or firmware, relevant program codes are stored in the memory 420 and invoked by the processor 410 for execution.
The input/output interface 413 is used to connect to an input/output module to realize information input and output. The input/output module may be configured as a component in a device (not shown) or may be external to the device to provide corresponding functionality. Wherein the input devices may include a keyboard, mouse, touch screen, microphone, various types of sensors, etc., and the output devices may include a display, speaker, vibrator, indicator lights, etc.
The network interface 414 is used to connect communication modules (not shown) to enable communication interactions of the device with other devices. The communication module may implement communication through a wired manner (such as USB, network cable, etc.), or may implement communication through a wireless manner (such as mobile network, WIFI, bluetooth, etc.).
Bus 430 includes a path to transfer information between various components of the device (e.g., processor 410, video display adapter 411, disk drive 412, input/output interface 413, network interface 414, and memory 420).
In addition, the electronic device 400 may also obtain information of specific acquisition conditions from the virtual resource object acquisition condition information database, for performing condition judgment, and so on.
It should be noted that although the above devices only show the processor 410, the video display adapter 411, the disk drive 412, the input/output interface 413, the network interface 414, the memory 420, the bus 430, and the like, in the specific implementation, the device may further include other components necessary to achieve normal execution. Furthermore, it will be appreciated by those skilled in the art that the apparatus may include only the components necessary to implement the present application, and not all of the components shown in the drawings.
Example five
Corresponding to all the above embodiments, the embodiments of the present application further provide a computer-readable storage medium, characterized in that it stores a computer program that causes a computer to perform the operations of:
acquiring the current electric quantity of the vehicle as a first electric quantity and the historical electric quantity of the vehicle before a preset time period;
if the first electric quantity is smaller than the historical electric quantity and the first electric quantity is smaller than or equal to a preset threshold value, the reserved power generation power of a range extender of the vehicle is obtained to adjust the discharge power of a battery so as 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, acquiring the current electric quantity of the vehicle as a second electric quantity;
and if the second electric quantity is smaller than or equal to the first electric quantity, limiting the thermal management power output by the thermal management module and the driving power output by the driving module according to a preset whole vehicle energy management rule, and controlling the range extender to output with target compensation power so as to release the compensation power to charge the vehicle.
From the above description of embodiments, it will be apparent to those skilled in the art that the present application may be implemented in software plus a necessary general hardware platform. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, etc., and includes several instructions for causing a computer device (which may be a personal computer, a cloud server, or a network device, etc.) to execute the method described in the embodiments or some parts of the embodiments of the present application.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for a system or system embodiment, since it is substantially similar to a method embodiment, the description is relatively simple, with reference to the description of the method embodiment being made in part. The systems and system embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present application without undue burden.
The foregoing description of the preferred embodiments of the application is not intended to limit the application to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the application are intended to be included within the scope of the application.
Claims (10)
1. A method of vehicle charge management, the method comprising:
acquiring the current electric quantity of the vehicle as a first electric quantity and the historical electric quantity of the vehicle before a preset time period;
if the first electric quantity is smaller than the historical electric quantity and the first electric quantity is smaller than or equal to a preset threshold value, the reserved power generation power of a range extender of the vehicle is obtained to adjust the discharge power of a battery so as 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, acquiring the current electric quantity of the vehicle as a second electric quantity;
and if the second electric quantity is smaller than or equal to the first electric quantity, limiting the thermal management power output by the thermal management module and the driving power output by the driving module according to a preset whole vehicle energy management rule, and controlling the range extender to output with target compensation power so as to release the compensation power to charge the vehicle.
2. The method of claim 1, wherein the obtaining the reserved power generation power of the range extender of the vehicle to adjust the discharge power of the battery comprises:
inquiring the reserved power generation power of the range extender according to the first electric quantity and a preset relation mapping table of the first electric quantity and the reserved power generation power of the range extender;
Acquiring the power generated by a generator of the vehicle and the discharge power of a battery in the vehicle;
determining that the power provided by the range extender for a battery of the vehicle is first power according to the difference value of the generated power of the generator and the reserved generated power;
and determining the discharge power of the battery according to the sum of the first power and the discharge power of the battery.
3. The method of claim 2, wherein the thermal management power comprises a cooling power and a heating power, the compensation power comprises a first compensation power and a second compensation power,
limiting the thermal management power output by the thermal management module and the driving power output by the driving module according to a preset whole vehicle energy management rule, and controlling the range extender to output with target compensation power so as to release the compensation power to charge the vehicle, wherein the method comprises the following steps:
acquiring the consumption power of a direct current exchange system of a vehicle;
determining a thermal management available power according to the discharge power of the battery, the consumption power of the direct current conversion system and the generation power of the generator;
determining a first limiting coefficient according to the ratio of the second electric quantity to the preset threshold value;
obtaining the maximum power of an air conditioner compressor of a vehicle, and determining a first refrigeration limit power according to the maximum power of the air conditioner compressor and a first limit coefficient;
Determining a target refrigeration limiting power according to the smaller value of the first refrigeration limiting power and the thermal management available power;
and limiting the refrigeration power in the thermal management power according to the target refrigeration limiting power to release the first compensation power to charge the vehicle.
4. The method of claim 3, wherein limiting the thermal management power output by the thermal management module, the driving power output by the driving module, and controlling the range extender to output the target compensation power according to the preset overall vehicle energy management rule to release the compensation power to charge the vehicle, comprises:
acquiring the actual refrigeration consumption power of the vehicle;
determining a first heating limiting power according to the difference value between the heat management available power and the refrigeration actual consumption power;
obtaining the maximum power of an electric heating controller of the vehicle, and determining second heating limiting power according to the maximum power of the electric heating controller and the first limiting coefficient;
determining a target heating limiting power according to the smaller value of the first heating available power and the second heating limiting power;
and limiting the heating power in the thermal management power according to the target heating limiting power to release second compensation power to charge the vehicle.
5. The method of claim 4, wherein the compensation power further comprises a third compensation power, the limiting the thermal management power output by the thermal management module, the driving power output by the driving module, and controlling the range extender to output at a target compensation power according to a preset overall vehicle energy management rule to release the compensation power to charge the vehicle, comprising:
acquiring the actual heating consumption power of the vehicle;
determining a first driving available power according to the consumed power of the direct current conversion system, the refrigerating actual consumed power, the heating actual consumed power, the discharging power of the battery and the generating power of the generator;
obtaining the maximum output power of a driving machine of a vehicle, and determining second driving available power according to the maximum output power of the driving machine and the first limiting coefficient;
determining a target drive available power according to a smaller value of the first drive available power and the second drive available power;
and limiting the driving power according to the target driving available power to release third compensation power to charge the vehicle.
6. The method of any of claims 3-5, wherein limiting the thermal management power output by the thermal management module, the driving power output by the driving module, and controlling the range extender to output the target compensation power according to a preset vehicle energy management rule to release the compensation power for charging the vehicle comprises:
Acquiring actual power generation power of a range extender of a vehicle;
determining a second limiting coefficient according to the difference value of the ratio of 2 to the second electric quantity and the preset threshold value;
determining undetermined compensation power of the range extender according to the second limiting coefficient and the actual power of the range extender;
obtaining the maximum charging power of a battery in a vehicle, and determining the target compensation power of the range extender according to a smaller value of the undetermined compensation power and the maximum power of the range extender;
and carrying out power generation control on the range extender according to the target compensation power so as to release fourth compensation power to charge the vehicle.
7. The method of claim 6, wherein the obtaining the range extender actual generated power of the vehicle comprises:
acquiring the speed of a vehicle;
and determining the actual power generation power of the range extender according to the vehicle speed and the second electric quantity.
8. A vehicle power management system, the system comprising:
the data acquisition module is used for acquiring the current electric quantity of the vehicle as the first electric quantity and the historical electric quantity of the vehicle before a preset time period;
the data processing module is used for acquiring reserved power generation power of a range extender of the vehicle to adjust the discharge power of a battery so as to control the range extender to release the reserved power generation power when the first electric quantity is smaller than the historical electric quantity and the first electric quantity is smaller than or equal to a preset threshold value;
The battery charging module is used for charging the vehicle according to the released reserved power;
the data acquisition module is further used for acquiring the current electric quantity of the vehicle as a second electric quantity after the vehicle is charged for the preset time period;
the data processing module is further configured to limit the thermal management power output by the thermal management module and the driving power output by the driving module according to a preset whole vehicle energy management rule when the second electric quantity is smaller than or equal to the first electric quantity, and control the range extender to output with a target compensation power so as to release the compensation power;
the battery charging module is also used for charging the vehicle according to the compensation power.
9. An electronic device, the electronic device comprising:
one or more processors;
and a memory associated with the one or more processors, the memory for storing program instructions that, when read for execution by the one or more processors, perform the method of any of claims 1-7.
10. A computer-readable storage medium, characterized in that it stores a computer program, which causes a computer to perform the method of any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310996083.3A CN116890699A (en) | 2023-08-09 | 2023-08-09 | Vehicle electric quantity management method, system, electronic equipment and storage medium |
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