CN116394906A - Range extender power control method, equipment and computer readable storage medium - Google Patents
Range extender power control method, equipment and computer readable storage medium Download PDFInfo
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- CN116394906A CN116394906A CN202310360731.6A CN202310360731A CN116394906A CN 116394906 A CN116394906 A CN 116394906A CN 202310360731 A CN202310360731 A CN 202310360731A CN 116394906 A CN116394906 A CN 116394906A
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- 238000010248 power generation Methods 0.000 claims abstract description 61
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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
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
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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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- 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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Abstract
The invention discloses a range extender power control method, equipment and a computer readable storage medium, wherein the method comprises the following steps: acquiring a current working mode of the whole vehicle, a current residual electric quantity of a power battery and an electric quantity change trend; determining preset output power in a preset output power set based on the residual electric quantity and the electric quantity change trend; determining the power generation power of the range extender according to the working mode and the preset output power; and controlling the range extender to output the generated power. The power generation power of the range extender under different residual electric quantity and electric quantity change trend can be determined under different whole vehicle working modes, so that the corresponding power requirement of the motor under different working states is met, the problem that the fuel economy of the range extender is low due to the fact that single output power is adopted in any working state is avoided, the fuel economy of the range extender is improved, and the energy-saving effect is achieved.
Description
Technical Field
The invention relates to the technical field of new energy electric automobiles, in particular to a range extender power control method, equipment and a computer readable storage medium.
Background
At present, the range extender is used for generating electricity to charge a power battery and generating electric energy to drive a motor so as to improve the cruising ability of the electric vehicle. When the residual electric quantity of the power battery of the electric automobile is insufficient, the range extender is in an open state, the electric automobile enters a range extender mode, and the range extender supplements electric energy for the electric automobile; when the residual electric quantity of the power battery of the electric automobile is sufficient, the range extender is in a closed state, and the electric automobile enters a pure electric mode. The existing range extender only has single power output in the motor power generation process, and cannot meet various different working states and corresponding power requirements of a motor, so that the range extender is poor in fuel economy.
Disclosure of Invention
Embodiments of the present application aim to improve the fuel economy of a range extender by providing a range extender power control method, apparatus and computer readable storage medium.
The embodiment of the application provides a range extender power control method, which comprises the following steps:
acquiring a current working mode of the whole vehicle, a current residual electric quantity of a power battery and an electric quantity change trend;
determining preset output power in a preset output power set based on the residual electric quantity and the electric quantity change trend;
determining the power generation power of the range extender according to the working mode and the preset output power;
and controlling the range extender to output the generated power.
Optionally, the step of determining the preset output power in the preset output power set based on the remaining power and the power variation trend includes:
determining an electric quantity interval corresponding to the residual electric quantity, and determining a preset output power set of a range extender according to the electric quantity change trend;
and selecting preset output power corresponding to the electric quantity intervals from the preset output power set, wherein each electric quantity interval has corresponding preset output power.
Optionally, the step of determining the generated power of the range extender according to the working mode and the preset output power includes:
and when the working mode is an intelligent mode, taking the preset output power as the power generation power of the range extender.
Optionally, the step of determining the generated power of the range extender according to the working mode and the preset output power includes:
when the working mode is a forced starting mode and the residual electric quantity is smaller than or equal to a first preset electric quantity, acquiring accessory power, maximum allowable battery charging power and generator consumption power;
determining the power of the whole vehicle according to the accessory power, the maximum allowable charging power of the battery and the power consumption of the generator;
and determining the power generation power of the range extender according to the whole vehicle power and the preset output power.
Optionally, the step of determining the generated power of the range extender according to the whole vehicle power and the preset output power includes:
when the whole vehicle power is larger than or equal to a preset whole vehicle power, determining the maximum power in the preset whole vehicle power and the preset output power;
and determining the maximum power as the generated power of the range extender.
Optionally, the method comprises:
when the working mode is a pure electric mode and the residual electric quantity is smaller than a second preset electric quantity, obtaining preset output power corresponding to the range extender in the pure electric mode;
taking the corresponding preset output power in the pure electric mode as the power generation power of the range extender;
and controlling the range extender to output the generated power in the pure electric mode.
Optionally, the method further comprises:
and when the residual electric quantity is smaller than the second preset electric quantity, limiting the maximum allowable output power of the generator according to the generated power of the range extender.
Optionally, limiting the maximum allowable output power of the generator according to the generated power of the range extender includes:
when the generated power of the range extender is larger than or equal to a first preset generated power, limiting the maximum allowable output power of the generator to be smaller than or equal to the first preset output power;
when the generated power of the range extender is smaller than the first preset generated power and larger than or equal to the second preset generated power, limiting the maximum allowable output power of the generator to be smaller than the second preset output power;
and when the power generation power of the range extender is smaller than the second preset power generation power, limiting the maximum allowable output power of the generator to be smaller than a third preset output power, wherein the first preset power generation power is larger than the second preset power generation power, the first preset output power is larger than the second preset output power, and the second preset output power is larger than the third preset output power.
In addition, to achieve the above object, the present invention also provides a range extender power control apparatus, including: the device comprises a memory, a processor and a range extender power control program which is stored in the memory and can run on the memory, wherein the range extender power control program realizes the steps of the range extender power control method when being executed by the memory.
In addition, in order to achieve the above object, the present invention also provides a computer readable storage medium having stored thereon a range extender power control program, which when executed by a memory, implements the steps of the range extender power control method described above.
Compared with the technical scheme of the prior art that only single output power is provided in the motor power generation process, the range extender power control method, equipment and computer readable storage medium provided in the embodiment of the application can determine the range extender power generation power under different residual electric quantity and electric quantity change trend under different whole vehicle working modes, and further control the range extender to output corresponding power generation power, so that the corresponding power requirements under different working states of the motor are met, and the fuel economy of the range extender is improved.
Drawings
FIG. 1 is a flowchart of a first embodiment of a range extender power control method according to the present invention;
fig. 2 is a schematic structural diagram of the range extender power control device of the present invention.
The achievement of the objects, functional features and advantages of the present application will be further described with reference to embodiments, with reference to the accompanying drawings, which are only illustrations of one embodiment, but not all of the inventions.
Detailed Description
Currently, the increase Cheng Qiju is provided with a single power output, and cannot meet different working states and corresponding power requirements of a motor, and no matter what working state the range extender is in, the output power of the range extender is fixed and single, so that the fuel economy of the range extender is reduced. In order to solve the problem of low fuel economy of the range extender, the application provides a power control method of the range extender. The range extender power control method can determine the power generated by the range extender under different residual electric quantity and electric quantity change trends in different whole vehicle working modes, thereby meeting the corresponding power requirements of the motor under different working states, avoiding the problem of low fuel economy of the range extender caused by single output power in any working state, improving the fuel economy of the range extender and playing the role of energy conservation.
In order that the above-described aspects may be better understood, exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
First embodiment.
As shown in fig. 1, in a first embodiment of the present application, the range extender power control method of the present application includes the following steps:
step S110, the current working mode of the whole vehicle, the current residual electric quantity of the power battery and the current electric quantity change trend are obtained.
In this embodiment, the whole vehicle of the present application includes, but is not limited to, an electric automobile with a range extender, a truck, and the like. The working modes of the whole vehicle comprise, but are not limited to, an intelligent mode, a pure electric mode, a forced starting mode and the like, and the method for calculating the output power of the range extender in each working mode is different. Each working mode can be started or closed through corresponding function keys on the whole vehicle; the start or stop control of the operation mode may also be performed by a terminal device, such as a user terminal or a remote control terminal, which is communicatively connected to the vehicle control unit.
Alternatively, the corresponding operation mode may be started or shut down when the corresponding start-up condition or shut-down condition is satisfied. For example, including but not limited to the following:
for the smart mode, the smart mode may be an energy saving mode, an automatic driving mode, a voice control mode, and the like. Whether to start or shut down the intelligent mode can be determined according to at least one of equipment usage information on the whole vehicle, a current state of the whole vehicle and a current ambient temperature. For example, when the current ambient temperature is lower than a preset temperature value, an intelligent mode such as a heating function of an air conditioner on the whole vehicle is started to increase the temperature in the whole vehicle; when the current state of the whole vehicle is a driving state and the current environment temperature is lower than a preset temperature value, an intelligent mode is started; and when the current state of the whole vehicle is a parking state, the intelligent mode is closed, and the like.
For the forced start mode, the forced start mode is a forced start mode. Whether to start or shut down the forced start mode may be determined based on the remaining charge of the power battery, the accessory power, the battery maximum operating charge power, and the motor power consumption. For example, the start-up forced mode may be determined when the remaining power of the power battery is less than or equal to 80% and the total power between the accessory power, the maximum allowable battery charge power, and the motor consumed power is greater than or equal to 40kW. Otherwise, the forced start mode is turned off.
For the pure electric mode, when the residual electric quantity of the power battery is sufficient, the range extender is in a closed state, the electric automobile enters the pure electric mode, the power battery directly drives the motor to drive the automobile, and the generator is not started and does not participate in power generation.
The control process of the whole vehicle is more intelligent because corresponding starting conditions or closing conditions are set for different working modes.
In this embodiment, the current remaining capacity of the power battery is referred to as SOC (state-of-charge) which is expressed as a ratio of the remaining capacity to the battery capacity, and is commonly expressed as a percentage. The value range is 0-1, and the battery is completely discharged when soc=0 and completely full when soc=1. The current residual electric quantity of the power battery can not be directly measured, but can be estimated by battery parameters such as terminal voltage, charge and discharge current, internal resistance and the like of the power battery. The related battery parameters of the power battery can be obtained through the single monitoring unit CMU, and then the current residual electric quantity of the power battery can be estimated. Alternatively, in order to improve the accuracy of the currently acquired remaining power of the power battery, the remaining power of the power battery in a period of time may be acquired, and one of the maximum value, the minimum value, the median value or the average value of the remaining power of the power battery in the period of time is taken as the current remaining power of the power battery.
In this embodiment, the power variation trend includes an uplink variation trend, that is, an increase in power of the power battery, and a downlink variation trend, that is, a decrease in power of the power battery. Because the working process of the range extender has hysteresis, the requirement of the electric quantity of the battery is ensured, and the same residual electric quantity can have different output power points of the range extender in the upward change trend and the downward trend of the battery. Therefore, before determining the output power of the range extender corresponding to the current remaining power, the change trend of the power battery power in a period of time needs to be determined, so that the preset output power set of the range extender is determined according to the change trend of the power battery power, and detailed description of specific embodiments is omitted herein in the following embodiments.
Step S120, determining a preset output power from a preset output power set based on the remaining power and the power variation trend.
In this embodiment, the power change trend is determined according to the power of the power battery collected during a period of time. Each electric quantity change trend has a corresponding preset output power set. The preset output power set includes an uplink power set and a downlink power set. When the electric quantity change trend is an uplink change trend, taking the uplink power set as a preset output power set of the range extender; and when the electric quantity change trend is a downlink change trend, taking the downlink power set as a preset output power set of the range extender. Wherein, whether it is an uplink power set or a downlink power set, there are a plurality of preset output powers in each set. The preset output power may be determined from a preset output power set according to the remaining power and the power variation trend.
And step S130, determining the power generation power of the range extender according to the working mode and the preset output power.
In this embodiment, under different power variation trends, the output power of the range extender corresponding to different remaining power is different. Therefore, the power generation power of the range extender corresponding to the residual electric quantity can be determined based on the electric quantity change trend. For example, when the power change trend is an uplink change trend, the power generation power of the range extender corresponding to the current remaining power is selected from a preset output power set corresponding to the uplink change trend. When the electric quantity change trend is a downlink change trend, the power generation power of the range extender corresponding to the current residual electric quantity is selected from a preset output power set corresponding to the downlink change trend.
Optionally, because the ways of determining the power generation of the range extender in different working modes are different, when determining the power generation of the range extender, the influence of different working modes is also required to be considered, and the power generation of the range extender is determined according to the working modes and the preset output power, so that various working states and corresponding power requirements in different working modes can be met, and the fuel economy of the range extender is improved.
Optionally, in order to improve the accuracy of the determined generated power of the range extender, a map between each remaining power and the preset output power of the range extender may also be established. The preset output power set of the range extender can be determined according to the electric quantity change trend, the preset output power corresponding to the current residual electric quantity is selected from the preset output power set, and then the power generation power of the range extender is determined according to the working mode and the preset output power. According to the method, various working states and corresponding power requirements under different working modes can be met, the accuracy of the generated power of the range extender can be improved, and the fuel economy of the range extender can be improved.
In an embodiment, when the current working mode of the whole vehicle is an intelligent mode, the preset output power can be directly used as the power generation power of the range extender, namely, assuming that the determined preset output power is 100kW, the 100kW can be directly used as the power generation power of the range extender, so that the power generation power of the range extender can be rapidly positioned when the electric quantity of the power battery changes in the intelligent mode, and the response time for positioning the power generation power of the range extender is shortened.
In an embodiment, when the current working mode of the whole vehicle is a forced starting mode and the residual electric quantity is smaller than or equal to a first preset electric quantity, acquiring accessory power, maximum allowable battery charging power and generator consumption power; determining the power of the whole vehicle according to the accessory power, the maximum allowable charging power of the battery and the power consumption of the generator; and determining the power generation power of the range extender according to the whole vehicle power and the preset output power.
The accessory power can be the power of equipment such as an air conditioner and a fan on the whole vehicle. The maximum allowable battery charging power can be fixedly set according to the performance of the battery when leaving the factory, and can also be adjusted according to the actual loss of the battery in the use process. The generator power consumption may be determined by measuring the output current and output voltage of the generator. The power of the accessories, the maximum allowable charging power of the battery and the power consumed by the generator can be obtained in real time or at fixed time according to actual demands. The preset output power is output power which is selected from a preset output power set and corresponds to an electric quantity interval where the residual electric quantity of the power battery is located. The whole vehicle power is the total power value of the accessory power, the maximum allowable battery charging power and the power consumed by the generator.
Optionally, when the whole vehicle is in the forced start mode, the remaining electric quantity of the power battery is smaller than or equal to the first preset electric quantity, and the whole vehicle power is larger than or equal to the preset whole vehicle power, determining that the forced start mode is allowed to be entered to start the range extender power control strategy. And when the power control strategy of the range extender is started after the strong start mode is judged to be allowed to be entered, determining the generated power of the range extender in the strong start mode. Optionally, when the whole vehicle power is greater than or equal to the preset whole vehicle power, determining the maximum power in the preset whole vehicle power and the preset output power, and determining the maximum power as the power generation power of the range extender. The preset whole power can be set according to actual conditions and can be set to 40kW. For example, when the whole vehicle is in a strong start mode, the residual electric quantity is less than or equal to 80%, and the whole vehicle power is more than or equal to 40kW, judging that the strong start mode is allowed to be entered to start the range extender strategy, and determining the maximum power value of the preset whole vehicle power and the preset output power as the power generation power of the range extender. Assuming that the preset output power is 50KW, determining 40kW as the power generation power of the range extender; assuming that the preset output power is 30KW, 50KW is determined as the generated power of the range extender. And in the forced start mode, the generated power of the range extender is rapidly positioned, and the response time of the generated power of the range extender is shortened.
And step S140, controlling the range extender to output the generated power.
In this embodiment, after determining the generated power of the range extender, the range extender may be controlled to output the generated power, so that the range extender supplements electric energy for the electric vehicle.
According to the technical scheme, the power generation power of the range extender under different residual electric quantity and electric quantity change trends can be determined, the corresponding power requirements of the motor under different working states are met, the problem that the fuel economy of the range extender is low due to the fact that single output power is adopted in any working state is avoided, the fuel economy of the range extender is improved, and the energy-saving effect is achieved.
Second embodiment.
As shown in fig. 2, based on the first embodiment, in a second embodiment of the present application, the present application proposes a range extender power control method in an intelligent mode and a forced start mode, including the following steps:
step S110, acquiring the current working mode of the whole vehicle, the current residual electric quantity and the electric quantity change trend of the power battery;
step S121, determining an electric quantity interval corresponding to the residual electric quantity, and determining a preset output power set of the range extender according to the electric quantity change trend;
step S122, selecting a preset output power corresponding to the electric quantity intervals from the preset output power set, where each electric quantity interval has a corresponding preset output power;
in this embodiment, since the working process of the range extender has hysteresis, the requirement of the battery power is ensured, and the same residual power may have different output power points of the range extender in the uplink variation trend and the downlink trend of the battery. Therefore, before determining the output power of the range extender corresponding to the remaining power, it is necessary to determine the trend of the power battery power change in a period of time. Whether the power battery has a downlink power change trend or an uplink power change trend, the power battery can be divided into a plurality of power intervals in advance, and the preset output power corresponding to each power interval is determined, so that a mapping table between the power intervals and the preset output power is generated, and the generated mapping table is shown as follows:
in this embodiment, the power change trend is determined according to the power of the power battery collected during a period of time. Each electric quantity change trend has a corresponding preset output power set. The preset output power set includes an uplink power set and a downlink power set. When the electric quantity change trend is an uplink change trend, taking the uplink power set as a preset output power set of the range extender; and when the electric quantity change trend is a downlink change trend, taking the downlink power set as a preset output power set of the range extender. Wherein, whether it is an uplink power set or a downlink power set, there are a plurality of preset output powers in each set. In addition, a power interval corresponding to the current residual power can be searched from the determined mapping table, and each power interval has corresponding preset output power in the preset output power set.
For example, when the current remaining power is 28% and the current power variation trend is a downlink variation trend, then the determined preset output power set is a downlink power set. The current residual electric quantity corresponds to an electric quantity interval of 25 percent less than or equal to 30 percent of SOC, and preset output power corresponding to the electric quantity interval of 25 percent less than or equal to 30 percent of SOC, namely 100kW, can be selected from the downlink power set. If the current electric quantity change trend is an uplink change trend, the determined preset output power set is an uplink power set. The current residual electric quantity corresponds to an electric quantity interval of 27 percent or less and SOC is less than 32 percent, and the preset output power corresponding to the electric quantity interval of 27 percent or less and SOC is less than 32 percent, namely 100kW can be selected from the uplink power set.
And step S130, determining the power generation power of the range extender according to the working mode and the preset output power.
Optionally, when the working mode is the intelligent mode, the preset output power is used as the power generation power of the range extender. Optionally, when the working mode is a forced starting mode and the remaining electric quantity is smaller than or equal to a first preset electric quantity, acquiring the accessory power, the maximum allowable battery charging power and the power consumption of the generator; determining the power of the whole vehicle according to the accessory power, the maximum allowable charging power of the battery and the power consumption of the generator; and determining the power generation power of the range extender according to the whole vehicle power and the preset output power.
And step S140, controlling the range extender to output the generated power.
According to the technical scheme, the change trend of the power battery electric quantity in a period of time is required to be judged before the output power of the range extender corresponding to the residual electric quantity is determined, the preset output power set of the range extender is determined according to the electric quantity change trend, the condition that different output powers of the range extender are possibly present in the same residual electric quantity due to hysteresis of the working process of the range extender is avoided, and the accuracy of the determined output power of the range extender is improved. In addition, when the power generation power of the range extender is determined, the influence of different working modes is also required to be considered, and the power generation power of the range extender is determined according to the working modes and preset output power, so that various working states and corresponding power requirements in different working modes can be met, and the fuel economy of the range extender is improved.
Third embodiment.
Based on the first embodiment and the second embodiment, in a third embodiment of the present application, the present application proposes a range extender power control method in a pure electric mode, including the steps of:
step S210, when the operation mode is a pure electric mode and the remaining electric quantity is smaller than a second preset electric quantity, obtaining a preset output power corresponding to the range extender in the pure electric mode;
step S220, using the preset output power corresponding to the pure electric mode as the generated power of the range extender;
and step S230, controlling the range extender to output the generated power in the pure electric mode.
In this embodiment, when the whole vehicle is in the pure electric mode and the remaining electric quantity is small, the pure electric mode is entered to start the range extender strategy. The preset output power corresponding to the range extender in the pure electric mode can be preset and fixed, and can also be determined according to the residual electric quantity of the power battery. And the second preset electric quantity can be set to be 6%, when the working mode is the pure electric mode and the residual electric quantity is less than 6%, the pure electric mode is started to start the range extender strategy, and the power generation is performed according to the preset output power of 120 kW. In addition, the maximum allowable motor power may be limited to 100kW for output power calculation.
Optionally, if the whole vehicle is not in the pure electric mode or the residual electric quantity is greater than or equal to the third preset electric quantity, exiting the pure electric mode to start the range extender strategy. For example, when the remaining power is greater than or equal to 15%, the pure electric mode is exited to activate the range extender strategy.
In an embodiment, in the pure electric mode, if the remaining power of the power battery is low, in order to ensure that the generated power of the range extender can be recharged to the power battery pack, the output power of the generator needs to be limited according to the current generated power of the range extender. And when the residual electric quantity of the power battery is smaller than the second preset electric quantity, limiting the maximum allowable output power of the generator according to the generated power of the range extender. For example, when the remaining power of the power battery is less than 6%, it is determined that the low power backing strategy is effective, and the maximum allowable output power of the generator is limited according to the generated power of the range extender.
Optionally, limiting the maximum allowable output power of the generator according to the generated power of the range extender includes, but is not limited to:
(1) When the generated power of the range extender is larger than or equal to a first preset generated power, limiting the maximum allowable output power of the generator to be smaller than or equal to the first preset output power;
(2) When the generated power of the range extender is smaller than the first preset generated power and larger than or equal to the second preset generated power, limiting the maximum allowable output power of the generator to be smaller than the second preset output power;
(3) And when the generated power of the range extender is smaller than the second preset generated power, limiting the maximum allowable output power of the generator to be smaller than the third preset output power.
The first preset power generation power, the second preset power generation power, the first preset output power, the second preset output power and the third preset output power can be set according to actual use conditions. The first preset power generation power is larger than the second preset power generation power, the first preset output power is larger than the second preset output power, and the second preset output power is larger than the third preset output power.
For example, the first preset power generation power is set to 115KW, the second preset power generation power is set to 75KW, the first preset output power is set to 100KW, the second preset output power is set to 70KW, and the third preset output power is set to 30KW.
Optionally, when the remaining capacity of the power battery is greater than or equal to the third preset capacity, it is determined that the low-power backing strategy is invalid, and the maximum allowable output power of the generator is not limited.
According to the technical scheme, when the working mode is a pure electric mode and the residual electric quantity is smaller than the second preset electric quantity, the preset output power corresponding to the range extender in the pure electric mode is obtained; taking the corresponding preset output power in the pure electric mode as the power generation power of the range extender; and controlling the range extender to output the generated power in the pure electric mode, so that the generated power of the range extender is rapidly positioned in the pure electric mode, and the response time of the generated power of the range extender is shortened. In addition, in the low-power state, the maximum allowable output power of the generator is limited according to the generated power of the range extender, so that the generated power of the range extender can be recharged to the power battery pack.
Embodiments of the present invention provide embodiments of a range extender power control method, it being noted that although a logic sequence is shown in the flow chart, in some cases the steps shown or described may be performed in a different order than that shown or described herein.
The embodiment of the application discloses range extender power control equipment, range extender power control equipment includes: a memory 1002, a processor 1001, and a range extender power control program stored on the memory 1002 and executable on the processor 1001, which when executed by the processor 1001, implements the steps of a range extender power control method.
The memory 1002 may be used to store software programs and modules, and the processor 1001 executes various functional applications and data processing by executing the software programs and modules stored in the memory 1002. The memory 1002 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, application programs required for functions, and the like; the storage data area may store data created according to the use of the terminal, etc. In addition, memory 1002 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory 1002 may also include a memory controller to provide the processor 1001 with access to the memory 1002.
In the present embodiment, when the processor 1001 invokes the range extender power control program stored in the memory 1002, the following operations are performed:
acquiring a current working mode of the whole vehicle, a current residual electric quantity of a power battery and an electric quantity change trend;
determining preset output power in a preset output power set based on the residual electric quantity and the electric quantity change trend;
determining the power generation power of the range extender according to the working mode and the preset output power;
and controlling the range extender to output the generated power.
When the processor 1001 invokes the range extender power control program stored in the memory 1002, the following operations are performed:
determining an electric quantity interval corresponding to the residual electric quantity, and determining a preset output power set of a range extender according to the electric quantity change trend;
and selecting preset output power corresponding to the electric quantity intervals from the preset output power set, wherein each electric quantity interval has corresponding preset output power.
When the processor 1001 invokes the range extender power control program stored in the memory 1002, the following operations are performed:
and when the working mode is an intelligent mode, taking the preset output power as the power generation power of the range extender.
When the processor 1001 invokes the range extender power control program stored in the memory 1002, the following operations are performed:
when the working mode is a forced starting mode and the residual electric quantity is smaller than or equal to a first preset electric quantity, acquiring accessory power, maximum allowable battery charging power and generator consumption power;
determining the power of the whole vehicle according to the accessory power, the maximum allowable charging power of the battery and the power consumption of the generator;
and determining the power generation power of the range extender according to the whole vehicle power and the preset output power.
When the processor 1001 invokes the range extender power control program stored in the memory 1002, the following operations are performed:
when the whole vehicle power is larger than or equal to a preset whole vehicle power, determining the maximum power in the preset whole vehicle power and the preset output power;
and determining the maximum power as the generated power of the range extender.
When the processor 1001 invokes the range extender power control program stored in the memory 1002, the following operations are performed:
when the working mode is a pure electric mode and the residual electric quantity is smaller than a second preset electric quantity, obtaining preset output power corresponding to the range extender in the pure electric mode;
taking the corresponding preset output power in the pure electric mode as the power generation power of the range extender;
and controlling the range extender to output the generated power in the pure electric mode.
When the processor 1001 invokes the range extender power control program stored in the memory 1002, the following operations are performed:
and when the residual electric quantity is smaller than the second preset electric quantity, limiting the maximum allowable output power of the generator according to the generated power of the range extender.
When the processor 1001 invokes the range extender power control program stored in the memory 1002, the following operations are performed:
when the generated power of the range extender is larger than or equal to a first preset generated power, limiting the maximum allowable output power of the generator to be smaller than or equal to the first preset output power;
when the generated power of the range extender is smaller than the first preset generated power and larger than or equal to the second preset generated power, limiting the maximum allowable output power of the generator to be smaller than the second preset output power;
and when the power generation power of the range extender is smaller than the second preset power generation power, limiting the maximum allowable output power of the generator to be smaller than a third preset output power, wherein the first preset power generation power is larger than the second preset power generation power, the first preset output power is larger than the second preset output power, and the second preset output power is larger than the third preset output power.
Based on the same inventive concept, the embodiments of the present application further provide a computer readable storage medium, where the computer readable storage medium stores a range extender power control program, where each step of the range extender power control method described above is implemented when the range extender power control program is executed by a processor, and the same technical effects can be achieved, so that repetition is avoided and redundant description is omitted herein.
Because the storage medium provided in the embodiments of the present application is a storage medium used for implementing the method in the embodiments of the present application, based on the method described in the embodiments of the present application, a person skilled in the art can understand the specific structure and the modification of the storage medium, and therefore, the description thereof is omitted herein. All storage media used in the methods of the embodiments of the present application are within the scope of protection intended in the present application.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system 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 system. 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 system that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) as described above, comprising instructions for causing a terminal device (which may be a mobile phone, a computer, a server, a television, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Claims (10)
1. The range extender power control method is characterized by comprising the following steps of:
acquiring a current working mode of the whole vehicle, a current residual electric quantity of a power battery and an electric quantity change trend;
determining preset output power in a preset output power set based on the residual electric quantity and the electric quantity change trend;
determining the power generation power of the range extender according to the working mode and the preset output power;
and controlling the range extender to output the generated power.
2. The range extender power control method according to claim 1, wherein the step of determining a preset output power from a preset output power set based on the remaining power and the power variation trend includes:
determining an electric quantity interval corresponding to the residual electric quantity, and determining a preset output power set of a range extender according to the electric quantity change trend;
and selecting preset output power corresponding to the electric quantity intervals from the preset output power set, wherein each electric quantity interval has corresponding preset output power.
3. The range extender power control method according to claim 1 or 2, wherein the step of determining the generated power of the range extender according to the operation mode and the preset output power includes:
and when the working mode is an intelligent mode, taking the preset output power as the power generation power of the range extender.
4. The range extender power control method according to claim 1 or 2, wherein the step of determining the generated power of the range extender according to the operation mode and the preset output power includes:
when the working mode is a forced starting mode and the residual electric quantity is smaller than or equal to a first preset electric quantity, acquiring accessory power, maximum allowable battery charging power and generator consumption power;
determining the power of the whole vehicle according to the accessory power, the maximum allowable charging power of the battery and the power consumption of the generator;
and determining the power generation power of the range extender according to the whole vehicle power and the preset output power.
5. The range extender power control method according to claim 4, wherein the step of determining the generated power of the range extender according to the entire vehicle power and the preset output power includes:
when the whole vehicle power is larger than or equal to a preset whole vehicle power, determining the maximum power in the preset whole vehicle power and the preset output power;
and determining the maximum power as the generated power of the range extender.
6. The range extender power control method of claim 1, wherein the range extender power control method comprises:
when the working mode is a pure electric mode and the residual electric quantity is smaller than a second preset electric quantity, obtaining preset output power corresponding to the range extender in the pure electric mode;
taking the corresponding preset output power in the pure electric mode as the power generation power of the range extender;
and controlling the range extender to output the generated power in the pure electric mode.
7. The range extender power control method of claim 6, further comprising:
and when the residual electric quantity is smaller than the second preset electric quantity, limiting the maximum allowable output power of the generator according to the generated power of the range extender.
8. The range extender power control method of claim 7 wherein limiting the maximum allowable output power of the generator based on the generated power of the range extender comprises:
when the generated power of the range extender is larger than or equal to a first preset generated power, limiting the maximum allowable output power of the generator to be smaller than or equal to the first preset output power;
when the generated power of the range extender is smaller than the first preset generated power and larger than or equal to the second preset generated power, limiting the maximum allowable output power of the generator to be smaller than the second preset output power;
and when the power generation power of the range extender is smaller than the second preset power generation power, limiting the maximum allowable output power of the generator to be smaller than a third preset output power, wherein the first preset power generation power is larger than the second preset power generation power, the first preset output power is larger than the second preset output power, and the second preset output power is larger than the third preset output power.
9. A range extender power control device, characterized in that the range extender power control device comprises: a memory, a processor, the memory storing a range extender power control program executable on the processor, the range extender power control program, when executed by the processor, implementing the steps of the range extender power control method of any one of claims 1-8.
10. A computer readable storage medium, characterized in that the computer readable storage medium stores a range extender power control program, which when executed by a processor, implements the steps of the range extender power control method of any one of claims 1-8.
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| CN202310360731.6A CN116394906A (en) | 2023-04-03 | 2023-04-03 | Range extender power control method, equipment and computer readable storage medium |
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| CN202310360731.6A CN116394906A (en) | 2023-04-03 | 2023-04-03 | Range extender power control method, equipment and computer readable storage medium |
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