CN117360480A - Target generation power determining method, system, equipment and vehicle - Google Patents
Target generation power determining method, system, equipment and vehicle Download PDFInfo
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- CN117360480A CN117360480A CN202311456680.3A CN202311456680A CN117360480A CN 117360480 A CN117360480 A CN 117360480A CN 202311456680 A CN202311456680 A CN 202311456680A CN 117360480 A CN117360480 A CN 117360480A
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- 238000010248 power generation Methods 0.000 claims abstract description 159
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- 230000008569 process Effects 0.000 description 17
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
- B60W20/13—Controlling the power contribution of each of the prime movers to meet required power demand in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion
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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
- 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
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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]
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- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Automation & Control Theory (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The application discloses a target power generation power determining method, a system, equipment and a vehicle, wherein operation information of a target vehicle is obtained, and the operation information comprises power generation required power and battery electric quantity; when the running information accords with a vehicle steady-state condition, determining target power generation of the target vehicle based on a battery electric quantity difference value interval corresponding to a battery electric quantity difference value, a power interval corresponding to power generation demand power and whether the target vehicle is in a forced power-preserving mode, wherein the battery electric quantity difference value is used for representing the difference value between the target battery electric quantity and the current battery electric quantity of the target vehicle. When the running condition of the vehicle is in a relative steady state, the battery electric quantity and the interval corresponding to the required power generation power are comprehensively considered, the target power generation power suitable for the current vehicle is output, the energy consumption required by the vehicle for frequently calculating and adjusting the target power generation power is reduced, the overheat or the strain of vehicle components caused by the frequent adjustment of the target power generation power of the vehicle is reduced, and the stability of the vehicle is improved.
Description
Technical Field
The application relates to the technical field of automobile electronics, in particular to a target generated power determining method, a system, equipment and a vehicle.
Background
At present, along with the rapid development of automobile development, a hybrid electric vehicle is one of the main stream directions of current automobile industry development, traditional fuel power and point power are combined through adding a hybrid power system, vehicle performance is improved better, an engine can be filled with petroleum fuel, a vehicle battery can be charged, power is provided for the vehicle jointly, the comfort level of the whole vehicle is improved, and the vehicle using experience of a user is enhanced.
The current main stream hybrid electric vehicle driving mode mainly comprises pure electric power, serial connection, direct engine driving and serial-parallel connection, different power driving can be carried out according to different selection conditions, and meanwhile, the mode can be switched in good time. When the vehicles are in the series working condition, the engine drives the generator to generate power, and the power is supplied to the battery for charging and the vehicles for driving. In order to ensure the dynamic performance of the vehicle and the SOC level of the battery, the power generation power under the serial working condition is required to be calculated. The current technology sets the calculation of the power generation under the serial working condition according to the requirement, integrates the battery, the driving force, the vehicle load and the like, performs summation calculation, starts according to the vehicle requirement, has the same requirement as the actual power generation amount, can maintain the vehicle consumption, can change at any time along with the change of the vehicle state, and is unfavorable for the vehicle stability and the energy consumption requirement.
Therefore, how to realize dynamic control of the target generated power of the vehicle is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
Based on the problems, the application provides a target power generation power determining method, a system, equipment and a vehicle, which realize dynamic control of the target power generation power of the vehicle and improve the flexibility of determining the target power generation power.
In order to solve the problems, the technical scheme provided by the application is as follows:
the first aspect of the present application provides a target generated power determining method, including:
acquiring operation information of a target vehicle, wherein the operation information comprises power generation required power and battery electric quantity;
when the running information accords with a vehicle steady-state condition, determining target power generation of the target vehicle based on a battery electric quantity difference value interval corresponding to a battery electric quantity difference value, a power interval corresponding to power generation demand power and whether the target vehicle is in a forced power-preserving mode, wherein the battery electric quantity difference value is used for representing the difference value between the target battery electric quantity and the current battery electric quantity of the target vehicle.
Optionally, the vehicle steady state condition includes at least one of a power mode of the target vehicle being a series mode, a power generation demand power of the target vehicle being less than a preset demand power, a current battery power of the target vehicle being greater than a preset power value, a battery discharging power being greater than a preset discharging power in a first preset time, the target vehicle being in a preset gear, an accelerator opening of the target vehicle being less than a preset opening value, and a road gradient of the target vehicle traveling in a second preset time being less than a preset gradient.
Optionally, when the running information meets a vehicle steady-state condition, determining the target power of the target vehicle based on a battery power difference interval corresponding to the battery power difference, a power interval corresponding to the power generation demand power, and whether the target vehicle is in a forced power-saving mode includes:
when the target vehicle is in a forced electricity-keeping mode, the battery electric quantity difference value accords with a first preset battery electric quantity difference value interval, and the power generation required power accords with a first preset power interval, a first preset power meter corresponding to the forced electricity-keeping mode is obtained; and acquiring a numerical value in the first preset power meter, wherein the numerical value is matched with the first preset battery electric quantity difference interval and the first preset power interval at the same time, and the numerical value is used as the target power generation power of the target vehicle.
Optionally, before the obtaining the first preset power meter corresponding to the forced electricity-keeping mode, the method further includes:
and integrating the power generation power values corresponding to the preset battery power difference intervals and the preset power intervals by taking the preset battery power difference intervals and the preset power intervals as coordinate points of a first axis and a second axis to obtain a first preset power meter, wherein the first axis and the second axis are transverse and longitudinal axes of the first preset power meter, and the first axis and the second axis are used for dividing the power generation power values corresponding to the preset power intervals and suitable for the forced power conservation mode.
Optionally, when the running information meets a vehicle steady-state condition, determining the target power of the target vehicle based on a battery power difference interval corresponding to the battery power difference, a power interval corresponding to the power generation demand power, and whether the target vehicle is in a forced power-saving mode includes:
when the target vehicle is in the non-forced electricity-keeping mode, the battery electric quantity difference value accords with a second preset battery electric quantity difference value interval, and the power generation required power accords with a second preset power interval, a second preset power meter corresponding to the non-forced electricity-keeping mode is obtained; and acquiring a numerical value in the second preset power meter, which is matched with the second preset battery electric quantity difference interval and the second preset power interval, as the target power generation power of the target vehicle.
Optionally, the method further comprises:
and when the running information does not meet the steady-state condition of the vehicle, determining the power generation required power as target power generation power.
Optionally, the determining manner of the battery power difference interval corresponding to the battery power difference and the power interval corresponding to the power generation demand power includes:
acquiring N preset nodes corresponding to the battery electric quantity difference value and M preset nodes corresponding to the power generation demand power, wherein N and M are positive integers;
Dividing the battery power difference into N+1 battery power difference intervals based on N preset nodes corresponding to the battery power difference; and dividing the power generation demand power into M+1 power intervals based on M preset nodes corresponding to the power generation demand power.
A second aspect of the present application provides a target generated power determination system, comprising:
the system comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring operation information of a target vehicle, and the operation information comprises power generation required power and battery electric quantity;
the first determining unit is used for determining target power generation of the target vehicle based on a battery power difference interval corresponding to a battery power difference, a power interval corresponding to power generation demand power and whether the target vehicle is in a forced power-saving mode or not when the running information accords with a vehicle steady-state condition, wherein the battery power difference is used for representing the difference between the target battery power and the current battery power of the target vehicle.
Optionally, the first determining unit is specifically configured to:
when the target vehicle is in a forced electricity-keeping mode, the battery electric quantity difference value accords with a first preset battery electric quantity difference value interval, and the power generation required power accords with a first preset power interval, a first preset power meter corresponding to the forced electricity-keeping mode is obtained; and acquiring a numerical value in the first preset power meter, wherein the numerical value is matched with the first preset battery electric quantity difference interval and the first preset power interval at the same time, and the numerical value is used as the target power generation power of the target vehicle.
Optionally, the system further comprises:
the first preset power meter determining unit is used for integrating the generated power values corresponding to each preset battery power difference interval and each preset power interval by taking each preset battery power difference interval and each preset power interval as coordinate points of a first axis and a second axis to obtain a first preset power meter, wherein the first axis and the second axis are transverse and longitudinal axes of the first preset power meter and are used for dividing the generated power values corresponding to each preset battery power difference interval and each preset power interval, which are suitable for the forced power protection mode.
Optionally, the first determining unit is specifically configured to:
when the target vehicle is in the non-forced electricity-keeping mode, the battery electric quantity difference value accords with a second preset battery electric quantity difference value interval, and the power generation required power accords with a second preset power interval, a second preset power meter corresponding to the non-forced electricity-keeping mode is obtained; and acquiring a numerical value in the second preset power meter, which is matched with the second preset battery electric quantity difference interval and the second preset power interval, as the target power generation power of the target vehicle.
Optionally, the system further comprises:
And the second determining unit is used for determining the power generation required power as target power generation power when the running information does not meet the steady-state condition of the vehicle.
A third aspect of the present application provides a target generated power determining apparatus, comprising: a processor, memory, system bus;
the processor and the memory are connected through the system bus;
the memory is for storing one or more programs, the one or more programs comprising instructions, which when executed by the processor, cause the processor to perform the target generated power determination implementation method of any of the preceding aspects.
A fourth aspect of the present application provides a vehicle including the target generated power determining apparatus provided in the third aspect of the present application.
Compared with the prior art, the application has the following beneficial effects:
the application provides a target power generation power determining method, a system, equipment and a vehicle, wherein the operation information of the target vehicle is obtained, and the operation information comprises power generation required power and battery electric quantity; when the running information accords with a vehicle steady-state condition, determining target power generation of the target vehicle based on a battery electric quantity difference value interval corresponding to a battery electric quantity difference value, a power interval corresponding to power generation demand power and whether the target vehicle is in a forced power-preserving mode, wherein the battery electric quantity difference value is used for representing the difference value between the target battery electric quantity and the current battery electric quantity of the target vehicle. In the scheme, when the running condition of the current vehicle is judged to be in a relative steady state according to running information, three influencing factors including battery electric quantity, required power generation power and whether the vehicle is in a forced power-saving mode are comprehensively considered, and target power generation power suitable for the current vehicle is determined according to section segmentation. Therefore, the flexible control of the target power generation power of the vehicle based on the actual running state of the vehicle is realized, the energy consumption required by the frequent calculation and adjustment of the target power generation power of the vehicle is reduced, and the stability of the vehicle is improved.
Drawings
In order to more clearly illustrate the present embodiments or the technical solutions in the prior art, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flowchart of a method for determining target generated power according to an embodiment of the present application;
fig. 2 is a section comparison control logic diagram of a battery power difference value provided in an embodiment of the present application;
FIG. 3 is a control logic diagram for comparing intervals of power generation demand power according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of an active power segment flag according to an embodiment of the present disclosure;
FIG. 5 is a logic diagram of calculation control of target generated power according to an embodiment of the present application;
fig. 6 is a block diagram of a target generated power determining system according to an embodiment of the present application.
Detailed Description
In order to make the present application solution better understood by those skilled in the art, the following description will clearly and completely describe the technical solution in the embodiments of the present application 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. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
As described above, the hybrid electric vehicle achieves the purpose of dual purposes of oil and electricity by adding the hybrid power system on the basis of the original traditional power, thereby reducing oil consumption and improving drivability. For one of the mainstream vehicle types in the current development stage, the hybrid electric vehicle is one of the mainstream directions of the current vehicle industry development, and the hybrid electric vehicle is added with electric power on the basis of keeping the power provided by the engine, so that pure electric driving, pure oil driving and double-power hybrid driving can be realized, and the architecture of the current mainstream mainly comprises modes of pure electric driving, serial connection, direct engine driving, parallel-serial connection and the like. The pure electric mode is that the motor directly drives wheels, and the engine does not participate in driving; the series mode means that the engine only generates electricity and then the motor drives the wheels; the series-parallel mode combines the engine and the motor, so that the engine can drive wheels and can generate power for the battery pack; the engine direct drive mode refers to the engine driving the wheels directly. The vehicle is required to calculate the power generated by the vehicle under the series working condition, and different calculation methods can influence the NVH of the vehicle
(Noise, vibration, harshness, noise, vibration and harshness) and fuel consumption level. In the prior art, the calculation of the power generation power under the serial working condition is set according to the requirements, and the battery, the driving force, the vehicle load and the like are integrated together to carry out summation calculation, so that the power generation power can be changed at any time when the vehicle state changes, and the reduction of the whole vehicle energy consumption is not facilitated.
In view of the above, the present application provides a target generated power determining method, system, device and vehicle, by obtaining operation information of a target vehicle, the operation information including a generated required power and a battery power; when the running information accords with a vehicle steady-state condition, determining target power generation of the target vehicle based on a battery electric quantity difference value interval corresponding to a battery electric quantity difference value, a power interval corresponding to power generation demand power and whether the target vehicle is in a forced power-preserving mode, wherein the battery electric quantity difference value is used for representing the difference value between the target battery electric quantity and the current battery electric quantity of the target vehicle. When the running condition of the vehicle is in a relative steady state, three influencing factors of battery electric quantity, required power generation and whether the vehicle is in a forced electricity-keeping mode are comprehensively considered, so that the target power generation suitable for the actual condition of the current vehicle is determined; on the other hand, when the vehicle is in a relatively steady-state working condition, the target power is selected based on the section segmentation, and when the vehicle state does not change greatly (namely, when the battery power difference and/or the power generation demand power change, but the corresponding section does not change), the target power of the vehicle is not changed, and the energy consumption in the process of adjusting the power generation of the vehicle is reduced. Therefore, the dynamic control of the target power generation power of the vehicle is realized based on the actual running state of the vehicle, the energy consumption required by frequent calculation and adjustment of the target power generation power of the vehicle is reduced, the overheat or strain of vehicle components caused by frequent adjustment of the target power generation power of the vehicle is reduced, and the stability of the vehicle is improved.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
A method for determining the target generated power provided in the present application will be described below by way of an embodiment. Referring to fig. 1, fig. 1 is a flowchart of a target generated power determining method provided in an embodiment of the present application, where the method provided in the embodiment of the present application may be executed by a controller or a control unit, and the method includes:
s101, acquiring operation information of a target vehicle.
The operation information is used for representing the operation condition of the vehicle in the running process and can include the condition of the vehicle and the running road condition, for example, the operation information can include a vehicle power mode, vehicle actual demand power, battery power of a BMS (Battery Management System, power battery management system), battery discharge power, vehicle gear, vehicle accelerator pedal opening, road gradient of running of the vehicle and the like. In one possible implementation, the type of the acquired operation information may be set according to actual requirements.
And S102, when the running information accords with a vehicle steady-state condition, determining the target power generation power of the target vehicle based on a battery power difference section corresponding to the battery power difference, a power section corresponding to the power generation demand power and whether the target vehicle is in a forced power-saving mode.
The battery charge differential value is used to characterize a difference between a target battery charge and an actual battery charge of the target vehicle. When the vehicle is in a relative steady state, the battery SOC and the required power are comprehensively considered, the battery power difference and the power generation required power are arranged in a segmented mode, and the target power generation power is determined based on a battery power difference section corresponding to the battery power difference and a power section corresponding to the power generation required power, so that dynamic control of the target power generation power of the vehicle according to the actual state of the vehicle can be realized. And the NVH of the vehicle is improved, and the oil consumption is reduced.
The vehicle steady state condition is used for judging whether the running state of the target vehicle is stable, and in an actual application scene, when the vehicle is in a fierce working condition or the condition changes are more, the current vehicle is judged to be not in accordance with the vehicle steady state condition. The actual power generation demand power of the vehicle under the serial working condition consists of battery charging power, vehicle driving power, high-voltage line loss power, PTC heating power and the like.
In one possible implementation manner, the determining manner of the battery power difference interval corresponding to the battery power difference and the power interval corresponding to the power generation requirement power includes:
acquiring N preset nodes corresponding to the battery electric quantity difference value and M preset nodes corresponding to the power generation demand power, wherein N and M are positive integers; dividing the battery power difference into N+1 battery power difference intervals based on N preset nodes corresponding to the battery power difference; and dividing the power generation demand power into M+1 power intervals based on M preset nodes corresponding to the power generation demand power.
It should be noted that, the number N of preset nodes corresponding to the battery power difference may be set and adjusted according to the actual requirement, the number M of preset nodes corresponding to the power generation requirement may be set and adjusted according to the actual requirement, and the values of M and N may be the same or different.
In an actual application scene, the current battery power is the residual power of the target vehicle battery actually detected at the current moment, and the current battery power is lower than the target battery power, so that power generation is required, and a battery power difference value is used for representing the power required to be supplemented by the target vehicle. The battery power difference interval corresponding to the battery power difference is a numerical interval obtained according to a preset battery power reference value, wherein the preset battery power reference value is used for representing the difference between the target battery power and the current battery power, the reference value is set for segmenting the difference between the target battery power and the current battery power to obtain 1 more than 1 battery power difference interval than the reference value, when each battery power difference interval corresponds to the power generation power suitable for the current difference, for example, when the preset battery power reference value is 3,5, 7,9, 11 and 13, six reference values are used as nodes for segmenting the intervals, seven corresponding segmentation intervals can be obtained, the corresponding battery power difference interval can be (0, 3), (3, 5), (5, 7), (7, 9), (9, 11), (11, 13), wherein the battery reference value 3 is used for representing the difference between the target battery power and the current battery power, the difference between the battery power and the reference value is 5, and when the corresponding value is equal to the reference value, namely, when the difference between the current battery power and the current battery power is obtained as the reference value is equal to the difference between the reference value, and the current battery power is 7, and the current battery power is 8, and when the corresponding value is obtained as the difference between the reference value and the current battery power value is equal to 8, and the value is equal to the value, and the value is 7, and when the difference between the current battery power is obtained is equal to the value and the value is 8.
When the vehicle is in a relatively steady-state working condition, the target power generation power needs to be determined based on the battery power difference interval corresponding to the battery power difference, and when the vehicle state does not change greatly (namely, the battery power difference changes, but the corresponding difference interval does not change), the target power generation power of the vehicle is not changed. For example, the difference of the battery power of the current vehicle is 3.5, the corresponding battery power difference interval is (3, 5), the target power generation power of the current vehicle is a according to the power interval corresponding to the power generation demand power, when the battery power difference is changed and increased to 4 in the running process of the vehicle, the corresponding battery power difference interval is still (3, 5), and under the condition that the interval corresponding to the power generation demand power is not changed, the target power generation power of the vehicle is still a.
It should be noted that the above battery power reference values 3, 5, 7, 9, 11 and 13 are merely illustrative, and in an actual application scenario, the value, the number, the difference between two reference values, etc. of the battery power reference values may be adaptively adjusted according to actual requirements, for example, the reference values may be set to be 2, 5, 8, 9 and 12.
In an actual application scenario, the interval comparison control logic of the battery power difference may refer to fig. 2, fig. 2 is a control logic diagram of interval comparison of the battery power difference provided in this embodiment, where the target SOC and the actual SOC respectively correspond to the actual battery power and the target battery power of the target vehicle, the battery power difference is obtained by making a difference, and then comparing with a reference value "3", determining whether the battery power difference is greater than 3, selecting "0" when the battery power difference is not greater than 3, that is, determining that the current battery power difference meets a first preset battery power difference interval "1", selecting "1" when the battery power difference is greater than 3, and comparing and selecting the next battery power difference with a next reference value "5", selecting "0" when the battery power difference is not greater than 5, that is, determining that the current battery power difference meets a second preset battery power difference interval "2", and so on, determining that the battery power difference is greater than 13 according to a connection sequence in the diagram, until determining that the battery power difference is greater than 13, and selecting "1" when the battery power difference is greater than 13, that the current battery power difference meets a seventh preset battery power difference interval "7". And determining a battery electric quantity difference value interval corresponding to the battery electric quantity difference value based on the comparison between the value of the battery electric quantity reference value and the value of the battery electric quantity reference value. Each battery level difference interval may correspond to a different generated power value.
The power intervals corresponding to the power generation demand power are numerical intervals obtained according to preset power reference values, for example, when the preset reference values are 7, 11, 16, 21, 26 and 31, six reference values are used as nodes for dividing the power intervals, seven corresponding segment intervals can be obtained by dividing, the corresponding seven power intervals can be (0, 7), (7, 11), (11, 16), (16, 21), (21, 26), (26, 31), wherein the power reference values are dividing reference values of the vehicle power generation demand power, each power interval corresponds to the power generation power applicable to the current interval, and if the vehicle power generation demand power is obtained at this time, the vehicle power generation demand power is compared with the segment intervals to obtain matched power intervals, namely, the power interval corresponding to the difference value 8 is the power interval (7, 11) formed by the power reference value 7 and the power reference value 11.
When the vehicle is in a relatively steady-state working condition, the target power generation power needs to be determined based on the power interval corresponding to the power generation demand power, and when the vehicle state does not change greatly (namely, the power generation demand power changes, but the corresponding power interval does not change), the target power generation power of the vehicle is not changed. For example, the power generation requirement of the current vehicle is 3, the corresponding battery power difference interval is (0, 7), the target power generation of the current vehicle is determined to be b by combining the battery power difference interval corresponding to the battery power difference, when the battery power difference is changed and increased to 4 in the running process of the vehicle, the corresponding battery power difference interval is still (0, 7), and under the condition that the battery power difference interval corresponding to the battery power difference is not changed, the target power generation of the vehicle is still b.
It should be noted that the above battery power reference values 7, 11, 16, 21, 26 and 31 are merely illustrative, and in an actual application scenario, the value, the number, the difference between two power reference values and the like of the power reference values may be adaptively adjusted according to actual requirements, for example, the reference values may be set to 8, 15, 18, 19 and 23.
In an actual application scenario, reference may be made to fig. 3 for a control logic diagram for comparing a section of power generation requirement, where fig. 3 is a control logic diagram for comparing a section of power generation requirement provided in this embodiment, where the power generation requirement is compared with a reference value "7" by size, whether the power generation requirement is greater than 7 is determined, when the power generation requirement is not greater than 7, "0" is selected, that is, the current power generation requirement is determined to be in accordance with a first preset power section "1", when the power generation requirement is greater than 7, "1" is selected, then next comparison and selection with a next reference value "11" are performed, when the power generation requirement is determined to be not greater than 11, "0" is selected, that is, the current battery power difference is determined to be in accordance with a second preset power section "2", and so on, according to the connection sequence in the diagram, the selection is performed until the battery power difference is determined to be greater than 31, and when the battery power difference is greater than 31, "1" is selected, the current battery power is determined to be in accordance with a seventh preset power section "7". Each power reference value is a reference for comparing the power required by power generation, and a power section corresponding to the power required by power generation is determined based on the comparison with the value of the power reference value. Each power interval may correspond to a different generated power value.
The forced power conservation mode is a vehicle running mode intended to ensure that the power system of the target vehicle remains powered in an emergency. In the forced power conservation mode, the vehicle system may take a series of actions to reduce the power demand to ensure basic power supply. In an actual application scenario, a button may be provided inside the vehicle, and when the system detects that the button is pressed, the vehicle is adjusted to the forced power-saving mode.
In one possible implementation manner, when the operation information meets a vehicle steady-state condition, determining the target power of the target vehicle based on a battery power difference interval corresponding to the battery power difference, a power interval corresponding to the power generation demand power, and whether the target vehicle is in a forced power-saving mode includes:
the vehicle steady state condition includes at least one of a power mode of the target vehicle being a preset mode, a power generation demand power of the target vehicle being less than a preset demand power, a current battery charge of the target vehicle being greater than a preset charge value, a discharge power of the battery being greater than a preset discharge power in a first preset time, the target vehicle being in a preset gear, an accelerator opening of the target vehicle being less than a preset opening value, and a road gradient of the target vehicle traveling in a second preset time being less than a preset gradient. In an actual application scene, at least one of the seven conditions can be selected as a judgment standard of a vehicle steady-state condition according to actual requirements, for example, a power mode of a target vehicle can be selected as a preset mode, and the power generation required power of the target vehicle is smaller than the preset required power, and when the target vehicle is judged to meet the two conditions at the same time, the target vehicle is determined to meet the vehicle steady-state condition.
In an actual application scenario, regarding a control logic process for judging that a target vehicle meets a vehicle steady-state condition, that is, a corresponding activation power segmentation marking process when the seven conditions need to be met simultaneously, refer to fig. 4, fig. 4 is a schematic diagram of an activation power segmentation marking provided in an embodiment of the present application, that is, a series mode is simultaneously met when a vehicle power mode is a vehicle power mode, an actual required power of the vehicle is less than 35KW, a BMS battery power is greater than 14%, a battery 10s discharge power is greater than 10KW, the vehicle is in D gear or R gear, an accelerator pedal opening of the vehicle is less than 50% (reset after the accelerator pedal opening is greater than 53% and exceeds 5 s), and a road gradient is less than 8 for more than 5s (reset after the road gradient is greater than 10). In an actual application scenario, the reset operation is a process of restoring a system or device to an initial state or default setting. Resetting after the accelerator pedal opening is more than 53% and exceeds 5s, automatically executing resetting operation by the system, and re-judging whether the target vehicle accords with a vehicle steady-state condition in the subsequent operation process, namely judging whether the accelerator pedal opening of the target vehicle in the subsequent operation process is smaller than a preset opening value; the road grade less than 8 is not subject to any special operation beyond 5 seconds and only continues to advance. However, when the road gradient is greater than 10 and exceeds 5 seconds, the system automatically executes a reset operation to re-determine whether the target vehicle meets the vehicle steady-state condition in the subsequent operation process, that is, whether the road gradient of the target vehicle driving in the second preset time in the subsequent operation process is smaller than the preset gradient, and the reset process is set to avoid danger caused by the fact that the vehicle stays on the steep slope for too long time, so that the driving safety of the vehicle is improved.
It should be noted that the above related data, related gear, etc. are all examples, and the technical solution provided in the present application is not limited, and in practical application, the adaptive adjustment can be performed according to the actual requirement.
In one possible implementation manner, when the operation information meets a vehicle steady-state condition, determining the target power of the target vehicle based on a battery power difference interval corresponding to the battery power difference, a power interval corresponding to the power generation demand power, and whether the target vehicle is in a forced power-saving mode includes:
when the target vehicle is in a forced electricity-keeping mode, the battery electric quantity difference value accords with a first preset battery electric quantity difference value interval, and the power generation required power accords with a first preset power interval, a first preset power meter corresponding to the forced electricity-keeping mode is obtained; and acquiring a numerical value in the first preset power meter, wherein the numerical value is matched with the first preset battery electric quantity difference interval and the first preset power interval at the same time, and the numerical value is used as the target power generation power of the target vehicle.
In one possible implementation manner, before the obtaining the first preset power meter corresponding to the forced electricity-keeping mode, the method further includes:
And integrating the power generation power values corresponding to the preset battery power difference intervals and the preset power intervals by taking the preset battery power difference intervals and the preset power intervals as coordinate points of a first axis and a second axis to obtain a first preset power meter, wherein the first axis and the second axis are transverse and longitudinal axes of the first preset power meter, and the first axis and the second axis are used for dividing the power generation power values corresponding to the preset power intervals and suitable for the forced power conservation mode. Each data point of the first axis corresponds to a data point of the second axis, and each data point of the second axis corresponds to a data point of the first axis.
That is, when the power split flag is activated, the vehicle may be based on both the battery SOC difference and the power generation demand power. Each power interval may correspond to a different power generation value, and each battery level difference interval may correspond to a different power generation value. Therefore, in the above example, on the basis of having 7 power intervals and 7 battery power difference intervals, each power interval may correspond to a different battery power difference interval, that is, the first preset power interval may correspond to 7 battery power difference intervals, and the first preset power meter may include at most 49 data values for representing the target generated power. In the actual application scenario, the case where different intervals correspond to the same target power may occur, and therefore, the number of the first preset power table may be 49 or less.
For example, when the first preset power interval is (0, 7) and the first preset battery power difference interval is (0, 3), the intersection point of the horizontal axis and the vertical axis in the table may be read in the first preset power table, and the value at the intersection point may be obtained as the target generated power of the target vehicle.
In an actual application scenario, a target power mapping table map may be set, that is, the values obtained in the above process and matching the first preset battery power difference interval and the first preset power interval are loaded into the target power mapping table map, the running information of the current target vehicle and the read values may be stored in association in the table, and when the system detects an output instruction of the target generated power, the values in the target power mapping table map are output, that is, the target generated power is output. With reference to fig. 5, fig. 5 is a schematic diagram of target power calculation control logic provided in an embodiment of the present application.
In one possible implementation manner, when the operation information meets a vehicle steady-state condition, determining the target power of the target vehicle based on a battery power difference interval corresponding to the battery power difference, a power interval corresponding to the power generation demand power, and whether the target vehicle is in a forced power-saving mode includes:
When the target vehicle is in the non-forced electricity-keeping mode, the battery electric quantity difference value accords with a second preset battery electric quantity difference value interval, and the power generation required power accords with a second preset power interval, a second preset power meter corresponding to the non-forced electricity-keeping mode is obtained; and acquiring a numerical value in the second preset power meter, which is matched with the second preset battery electric quantity difference interval and the second preset power interval, as the target power generation power of the target vehicle.
The construction process, arrangement relation, etc. of the second preset power meter are the same as those of the first preset power meter, and are not described herein. The second preset power meter differs from the first preset power meter in that the target generated power in the meter is the relevant data suitable for the non-forced electricity-retention mode. In an actual application scene, the system can call a preset table according to whether the current target vehicle is in a forced electricity-keeping mode or not, and different modes can correspond to different data tables, so that the flexibility of setting the target power generation power is improved.
In one possible implementation manner, after the obtaining the operation information of the target vehicle, the method further includes:
and when the running information does not meet the steady-state condition of the vehicle, determining the power generation required power as target power generation power.
When the vehicle is in a violent working condition or the condition changes more, the running state of the current vehicle can be judged to be not in accordance with the steady-state condition of the vehicle, the target power generation power is directly selected from the actual power demand, and the dynamic performance and the overall SOC level of the vehicle are ensured.
When the power section flag bit is not activated, the actual power generation requirement is the target power generation power. And if the power segmentation flag bit is activated, selecting the segmented power as the target generated power. And judging the target power dividing node according to the SOC difference dividing node and the power dividing node, and simultaneously considering whether the target power dividing node is in a forced power-saving mode or not. And setting target power according to the target power dividing nodes, and finally outputting target generated power. The two target power generation power calculation methods are comprehensively used according to the vehicle state, so that the power performance of the vehicle is ensured, the energy consumption is reduced, and the performance of the whole vehicle is improved.
Therefore, according to the method provided by the embodiment of the application, different target power generation power setting methods can be selected according to different working conditions of the vehicle, and when the vehicle is in a violent working condition or the change of the conditions is more, namely the vehicle is not in accordance with a steady-State condition of the vehicle, the target power generation power is directly selected as actual required power, so that the dynamic property of the vehicle and the overall State of charge (SOC) level are ensured; when the vehicle is in a relative steady state, the battery SOC and the required power generation power are comprehensively considered for section setting, stable target power generation power is output, NVH of the vehicle is improved, and oil consumption is reduced. The dynamic control of the target power generation power of the vehicle is realized, and the intelligent control is realized. And the drivability and the vehicle using experience are improved.
The above is some specific implementation manners of the target power generation determining implementation method provided by the embodiments of the present application, and based on this, the present application further provides a corresponding system for implementing the target power generation determining. The system provided in the embodiments of the present application will be described from the viewpoint of functional modularization. Fig. 6 is a block diagram of a target generated power determining system according to an embodiment of the present application.
The system comprises:
an acquisition unit 110 for acquiring operation information of the target vehicle, the operation information including power generation required power and battery power;
the first determining unit 111 is configured to determine, when the running information meets a vehicle steady-state condition, a target power generation power of the target vehicle based on a battery power difference interval corresponding to a battery power difference, a power interval corresponding to a power generation demand power, and whether the target vehicle is in a forced power-saving mode, where the battery power difference is used to represent a difference between a target battery power and a current battery power of the target vehicle.
Optionally, the first determining unit is specifically configured to:
when the target vehicle is in a forced electricity-keeping mode, the battery electric quantity difference value accords with a first preset battery electric quantity difference value interval, and the power generation required power accords with a first preset power interval, a first preset power meter corresponding to the forced electricity-keeping mode is obtained; and acquiring a numerical value in the first preset power meter, wherein the numerical value is matched with the first preset battery electric quantity difference interval and the first preset power interval at the same time, and the numerical value is used as the target power generation power of the target vehicle.
Optionally, the system further comprises:
the first preset power meter determining unit is used for integrating the generated power values corresponding to each preset battery power difference interval and each preset power interval by taking each preset battery power difference interval and each preset power interval as coordinate points of a first axis and a second axis to obtain a first preset power meter, wherein the first axis and the second axis are transverse and longitudinal axes of the first preset power meter and are used for dividing the generated power values corresponding to each preset battery power difference interval and each preset power interval, which are suitable for the forced power protection mode.
Optionally, the first determining unit is specifically configured to:
when the target vehicle is in the non-forced electricity-keeping mode, the battery electric quantity difference value accords with a second preset battery electric quantity difference value interval, and the power generation required power accords with a second preset power interval, a second preset power meter corresponding to the non-forced electricity-keeping mode is obtained; and acquiring a numerical value in the second preset power meter, which is matched with the second preset battery electric quantity difference interval and the second preset power interval, as the target power generation power of the target vehicle.
Optionally, the system further comprises:
And the second determining unit is used for determining the power generation required power as target power generation power when the running information does not meet the steady-state condition of the vehicle.
The embodiment of the application also provides corresponding equipment and a computer storage medium, which are used for realizing the target generation power determination implementation method scheme provided by the embodiment of the application.
The device comprises a memory and a processor, wherein the memory is used for storing instructions or codes, and the processor is used for executing the instructions or codes to enable the device to execute the target generated power determination implementation method according to any embodiment of the application.
The computer storage medium stores codes, and when the codes are executed, the equipment for executing the codes realizes the target generation power determination implementation method according to any embodiment of the application.
The application also provides a vehicle comprising the target generated power determination implementation method according to any embodiment of the application.
It should be noted that, in the present description, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different manner from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the system or device disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple, and the relevant points refer to the description of the method section.
It should be understood that in this application, "at least one" means one or more, and "a plurality" means two or more. "and, or" for describing an association relationship of an association object, the representation may have three relationships, for example, "a and, or B" may represent: only a, only B and both a and B are present, wherein a, B may be singular or plural. The character "generally indicates that the front-rear association object is an or relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b or c may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.
It is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. The software modules may be disposed in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A target generated power determination method, characterized by comprising:
acquiring operation information of a target vehicle, wherein the operation information comprises power generation required power and battery electric quantity;
When the running information accords with a vehicle steady-state condition, determining target power generation of the target vehicle based on a battery electric quantity difference value interval corresponding to a battery electric quantity difference value, a power interval corresponding to power generation demand power and whether the target vehicle is in a forced power-preserving mode, wherein the battery electric quantity difference value is used for representing the difference value between the target battery electric quantity and the current battery electric quantity of the target vehicle.
2. The method of claim 1, wherein the vehicle steady state condition includes at least one of a power mode of the target vehicle being a preset mode, a power generation demand power of the target vehicle being less than a preset demand power, a current battery level of the target vehicle being greater than a preset electrical level value, a battery discharging power being greater than a preset discharging power for a first preset time, the target vehicle being in a preset gear, an accelerator pedal opening of the target vehicle being less than a preset opening value, and a road grade of the target vehicle traveling for a second preset time being less than a preset grade.
3. The method of claim 1, wherein when the operating information meets a vehicle steady-state condition, determining the target generated power of the target vehicle based on a battery level difference interval corresponding to the battery level difference, a power interval corresponding to the generated demand power, and whether the target vehicle is in a forced power conservation mode, comprises:
When the target vehicle is in a forced electricity-keeping mode, the battery electric quantity difference value accords with a first preset battery electric quantity difference value interval, and the power generation required power accords with a first preset power interval, a first preset power meter corresponding to the forced electricity-keeping mode is obtained; and acquiring a numerical value in the first preset power meter, wherein the numerical value is matched with the first preset battery electric quantity difference interval and the first preset power interval at the same time, and the numerical value is used as the target power generation power of the target vehicle.
4. The method according to claim 3, further comprising, before the step of obtaining the first preset power meter corresponding to the forced power-saving mode:
and integrating the power generation power values corresponding to the preset battery power difference intervals and the preset power intervals by taking the preset battery power difference intervals and the preset power intervals as coordinate points of a first axis and a second axis to obtain a first preset power meter, wherein the first axis and the second axis are transverse and longitudinal axes of the first preset power meter, and the first axis and the second axis are used for dividing the power generation power values corresponding to the preset power intervals and suitable for the forced power conservation mode.
5. The method of claim 1, wherein when the operating information meets a vehicle steady-state condition, determining the target generated power of the target vehicle based on a battery level difference interval corresponding to the battery level difference, a power interval corresponding to the generated demand power, and whether the target vehicle is in a forced power conservation mode, comprises:
When the target vehicle is in the non-forced electricity-keeping mode, the battery electric quantity difference value accords with a second preset battery electric quantity difference value interval, and the power generation required power accords with a second preset power interval, a second preset power meter corresponding to the non-forced electricity-keeping mode is obtained; and acquiring a numerical value in the second preset power meter, which is matched with the second preset battery electric quantity difference interval and the second preset power interval, as the target power generation power of the target vehicle.
6. The method according to claim 1, wherein the method further comprises:
and when the running information does not meet the steady-state condition of the vehicle, determining the power generation required power as target power generation power.
7. The method according to claim 1, wherein the determining manner of the battery power difference interval corresponding to the battery power difference and the power interval corresponding to the power generation demand power includes:
acquiring N preset nodes corresponding to the battery electric quantity difference value and M preset nodes corresponding to the power generation demand power, wherein N and M are positive integers;
dividing the battery power difference into N+1 battery power difference intervals based on N preset nodes corresponding to the battery power difference; and dividing the power generation demand power into M+1 power intervals based on M preset nodes corresponding to the power generation demand power.
8. A target generated power determination system, the system comprising:
the system comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring operation information of a target vehicle, and the operation information comprises power generation required power and battery electric quantity;
the first determining unit is used for determining target power generation of the target vehicle based on a battery power difference interval corresponding to a battery power difference, a power interval corresponding to power generation demand power and whether the target vehicle is in a forced power-saving mode or not when the running information accords with a vehicle steady-state condition, wherein the battery power difference is used for representing the difference between the target battery power and the current battery power of the target vehicle.
9. A target generated power determining apparatus characterized by comprising: a processor, memory, and system bus;
the processor and the memory are connected through the system bus;
the memory is for storing one or more programs, the one or more programs comprising instructions, which when executed by the processor, cause the processor to perform the target generated power determination implementation method of any of claims 1-7.
10. A vehicle comprising a target generated power determining apparatus according to claim 9.
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| CN117755152A (en) * | 2024-02-22 | 2024-03-26 | 潍柴动力股份有限公司 | Power generation power adjustment method and device of range-extending system |
| CN117755152B (en) * | 2024-02-22 | 2024-05-17 | 潍柴动力股份有限公司 | Power generation power adjustment method and device of range-extending system |
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