CN114162109B - Range extender power control method and device, power utilization device, electronic equipment and vehicle - Google Patents
Range extender power control method and device, power utilization device, electronic equipment and vehicle Download PDFInfo
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- CN114162109B CN114162109B CN202111629439.7A CN202111629439A CN114162109B CN 114162109 B CN114162109 B CN 114162109B CN 202111629439 A CN202111629439 A CN 202111629439A CN 114162109 B CN114162109 B CN 114162109B
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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
- B60W20/15—Control strategies specially adapted for achieving a particular effect
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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
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/24—Energy storage means
- B60W2510/242—Energy storage means for electrical energy
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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 application discloses a range extender power control method, a range extender power control device, an electric device, electronic equipment and a vehicle, wherein the method comprises the following steps: determining a power following target value of the range extender according to the required power value of the power utilization device and the power parameter of the battery; determining a filter coefficient according to the power margin of the battery, wherein the filter coefficient is positively correlated with the power margin; filtering the power following target value by using the filtering coefficient to obtain a filtered following power value; and controlling the output power of the range extender according to the filtered following power value. In the method, the power following target value is filtered, and when the power margin of the battery is larger, the working condition change of the range extender is controlled to be smoother, so that the efficiency of the range extender and the NVH performance of the power utilization device can be improved; when the power margin of the battery is smaller, the working condition of the control range extender changes faster, so that the power consumption requirement of the power consumption device and the charging requirement of the battery can be met as much as possible.
Description
Technical Field
The application belongs to the technical field of range extender control, and particularly relates to a range extender power control method, a range extender power control device, an electric device, electronic equipment and a vehicle.
Background
The range extender of the range-extending power utilization device (such as a range-extending electric vehicle) consists of an engine and a generator, wherein the engine drives the generator to generate power, and the output electric energy is used for charging a battery of the power utilization device or supplying power to a driving motor of the power utilization device.
Currently, the working mode of the range extender generally adopts a power following mode, in which the required power of the electric device is used as a power following target, and when the driving working condition of the electric device changes, the power of the range extender changes faster, which not only results in poor NVH (Noise, vibration, harshness, noise, vibration and harshness) performance of the electric device, but also results in lower efficiency of the range extender.
Disclosure of Invention
The embodiment of the application provides a range extender power control method, a range extender power control device, an electric device, electronic equipment and a vehicle, so as to solve the technical problems that in the existing range extender power following mode, the NVH performance of the electric device is poor and the efficiency of the range extender is low due to the fact that the range extender power changes fast.
In a first aspect, an embodiment of the present application provides a range extender power control method, including:
determining a power following target value of the range extender according to the required power value of the power utilization device and the power parameter of the battery;
determining a filter coefficient according to the power margin of the battery, wherein the filter coefficient is positively correlated with the power margin;
filtering the power following target value by using the filtering coefficient to obtain a filtered following power value;
and controlling the output power of the range extender according to the filtered following power value.
In a second aspect, an embodiment of the present application provides a range extender power control device, including:
the first determining module is used for determining a power following target value of the range extender according to the required power value of the power utilization device and the power parameter of the battery;
the second determining module is used for determining a filter coefficient according to the power margin of the battery, and the filter coefficient is positively related to the power margin;
the filtering module is used for filtering the power following target value by using the filtering coefficient so as to obtain a filtered following power value;
and the first control module is used for controlling the output power of the range extender according to the filtered following power value.
In a third aspect, embodiments of the present application provide an electrical device, including the range extender power control device of the second aspect.
In a fourth aspect, an embodiment of the present application provides an electronic device, including: a processor and a memory storing computer program instructions;
the processor reads and executes the computer program instructions to implement the range extender power control method of the first aspect.
In a fifth aspect, embodiments of the present application provide a vehicle implementing the range extender power control method according to the first aspect.
In a sixth aspect, embodiments of the present application provide a computer storage medium having stored thereon computer program instructions which, when executed by a processor, implement the range extender power control method according to the first aspect.
In the embodiment of the application, first, according to a required power value of an electric device and a power parameter of a battery, a power following target value of a range extender is determined. The power following target not only considers the power consumption requirement of the power consumption device, but also considers the power parameter of the battery, so that the determined power following target is more reasonable. And then, determining a filter coefficient according to the power margin of the battery, filtering the power following target value by using the filter coefficient, and controlling the output power of the range extender according to the filtered following power value, wherein the filter coefficient is positively correlated with the power margin. When the power margin is larger, the charging requirement of the battery in a short time is generally smaller, and the power margin of the battery can better meet the power requirement of the power utilization device in a short time, so that a larger filter coefficient can be used for filtering the power following target value, the working condition change of the range extender is smoother, the efficiency of the range extender can be improved, and the NVH performance of the power utilization device is improved; and when the power margin is smaller, the charging requirement of the battery in a short time is generally larger, and the power margin of the battery can not better meet the power requirement of the power utilization device in a short time, so that the smaller filter coefficient can be used for filtering the power following target value, the working condition of the range extender can change more quickly, and the power requirement of the power utilization device and the charging requirement of the battery can be met as much as possible.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described, and it is possible for a person skilled in the art to obtain other drawings according to these drawings without inventive effort.
FIG. 1 is a flow chart of a range extender power control method provided in some embodiments of the present application;
FIG. 2 is a graph containing filtered following power values provided in some embodiments of the present application;
FIG. 3 is a graph containing filtered following power values provided in further embodiments of the present application;
FIG. 4 is a specific example diagram of a range extender power control method provided in some embodiments of the present application;
FIG. 5 is a schematic diagram of a range extender power control device according to some embodiments of the present disclosure;
FIG. 6 is a schematic diagram of an electrical device provided in some embodiments of the present application;
fig. 7 is a schematic hardware structure of an electronic device according to some embodiments of the present application.
Detailed Description
Features and exemplary embodiments of various aspects of the present application are described in detail below to make the objects, technical solutions and advantages of the present application more apparent, and to further describe the present application in conjunction with the accompanying drawings and the detailed embodiments. It should be understood that the specific embodiments described herein are merely configured to explain the present application and are not configured to limit the present application. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by showing examples of the present application.
It is 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 … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
As described in the background art, the current working mode of the range extender generally adopts a power following mode, in which the required power of the electric device is used as a power following target, and when the driving working condition of the electric device changes, the power of the range extender changes faster, which not only results in poor NVH performance of the electric device, but also results in lower efficiency of the range extender.
In order to solve the problems in the prior art, the embodiment of the application provides a range extender power control method, a range extender power control device, an electric device, electronic equipment and a computer storage medium.
The following first describes a range extender power control method provided in an embodiment of the present application.
Fig. 1 shows a flowchart of a range extender power control method according to an embodiment of the present application.
As shown in fig. 1, the method may include the steps of:
step 110: and determining a power following target value of the range extender according to the required power value of the power utilization device and the power parameter of the battery.
Step 120: and determining a filter coefficient according to the power margin of the battery, wherein the filter coefficient is positively correlated with the power margin.
Step 130: and filtering the power following target value by using the filter coefficient to obtain a filtered following power value.
Step 140: and controlling the output power of the range extender according to the filtered following power value.
For convenience of description, a specific process of the range extender power control method will be described below with the range extender power control device as an execution body.
In step 110, the range extender power control device may determine a power following target value of the range extender according to the required power value of the power consumption device and the power parameter of the battery.
The electric device is understood to be an electric energy utilization device with a range extender, and is exemplified by a range extender electric vehicle.
The power demand of the electric device may be understood as the power required by the electric device, for example, the electric vehicle may include driving required power and high-voltage accessory power, wherein the driving required power may be the power required for driving the vehicle, and the high-voltage accessory power may be the power required for driving other accessories in the vehicle, particularly, the high-voltage accessories may be a DC/DC converter, an air conditioner compressor, and/or an automobile heater.
The power parameter of the battery may be understood as a parameter related to the power of the battery, which may include, but is not limited to, an actual power value, a charge balance power value, or a charge saturation power value of the battery, and the power parameter of the battery may be related to a state of charge (SOC), a temperature, and the like of the battery.
It should be noted that, compared with the prior art that the power following value of the range extender is determined only according to the required power value of the power consumption device, in the embodiment of the application, the power following value of the range extender is determined together according to the required power value of the power consumption device and the power parameter of the battery, so that the influence of the battery as a power supplier on the working condition of the range extender is fully reflected, and the determined power following value is more reasonable.
In step 120, the range extender power control device may determine the filter coefficients based on the power margin of the battery.
The filter coefficient is positively correlated with the power margin, the larger the filter coefficient.
The power margin of the battery may also be referred to as a remaining available power margin, which is related to an actual power value, a maximum discharge power, and a maximum charge power of the battery. Here, the maximum discharge power and the maximum charge power represent power capability of charging and discharging the battery, and represent a charging and discharging speed of the battery in a short time. The power margin of the battery can be calculated according to the actual power of the battery and the maximum discharge power or the maximum charge power of the battery.
By way of example, a mapping relation table of the power margin and the filter coefficient can be obtained in advance through means such as simulation and experiment, the filter coefficient corresponding to each power margin is recorded in the table, and after the current power margin is calculated, the filter coefficient corresponding to the power margin can be determined through table lookup.
The calculation formula of the filter coefficient can be obtained in advance through means such as simulation and experiment, wherein the power margin can be used as an independent variable, the filter coefficient is used as a dependent variable, and the filter coefficient corresponding to the current power margin can be obtained through formula calculation after the current power margin is calculated.
In step 130, the range extender power control device may filter the power following target value determined in step 110 using the filter coefficient determined in step 120 to obtain a filtered following power value. In step 140, the range extender power control device may control the output power of the range extender according to the filtered following power value.
For example, the output power value of the range extender may be equal to the filtered following power value; or, the output power value of the range extender can be a certain amplitude of the filtered follow power value floating upwards or downwards; alternatively, the output power value of the range extender may be the filtered following power value multiplied by a certain coefficient.
When the power margin of the battery is larger, the filtering coefficient is larger, the change of the following power value after filtering is smoother, the change of the output power of the range extender is smoother, and thus, the working condition change of the range extender is smoother; when the power margin of the battery is smaller, the filtering coefficient is smaller, the change of the following power value after filtering is faster, the change of the output power of the range extender is faster, and thus, the working condition of the range extender is faster.
In the embodiment of the present application, first, the power following target value of the range extender is determined according to the required power value of the electric device and the power parameter of the battery. The power following target not only considers the power consumption requirement of the power consumption device, but also considers the power parameter of the battery, so that the determined power following target is more reasonable. And then, determining a filter coefficient according to the power margin of the battery, filtering the power following target value by using the filter coefficient, and controlling the output power of the range extender according to the filtered following power value, wherein the filter coefficient is positively correlated with the power margin. When the power margin is larger, the charging requirement of the battery in a short time is generally smaller, and the power margin of the battery can better meet the power requirement of the power utilization device in a short time, so that a larger filter coefficient can be used for filtering the power following target value, the working condition change of the range extender is smoother, the efficiency of the range extender can be improved, and the NVH performance of the power utilization device is improved; and when the power margin is smaller, the charging requirement of the battery in a short time is generally larger, and the power margin of the battery can not better meet the power requirement of the power utilization device in a short time, so that the smaller filter coefficient can be used for filtering the power following target value, the working condition of the range extender can change more quickly, and the power requirement of the power utilization device and the charging requirement of the battery can be met as much as possible.
In some embodiments, step 110 may include:
and determining a power following target value of the range extender according to the required power value of the electric device and the electric quantity balance power value of the battery, wherein the power following target value is in positive correlation with the required power value and the electric quantity balance power value.
In this embodiment, the power following value of the range extender is determined together from two parameters, namely the required power value of the power consumer and the power balance power value of the battery.
The charge balance power value of a battery can be understood as the power required by the battery to reach a charge balance target at the current state of charge. For example, assuming that the battery's charge balance target is 50SOC and the current battery charge is 40SOC, then the battery's charge balance power value may be the power required for the battery to reach 50SOC from 40 SOC. At this time, the range extender needs to work with higher power, and besides providing a part of electric energy to meet the power demand of the power utilization device, the range extender also needs to provide a part of electric energy to charge the battery, so that the battery can reach the electric quantity balance target. The farther the current charge of the battery is from the charge balance target, the larger the charge balance power value.
The power following target value is positively correlated with the required power value and the electric quantity balance power value, and the larger the required power value is, the larger the power following target value is, and the larger the electric quantity balance power value is, the larger the power following target value is.
The power following target value may be equal to the sum of the required power value and the power balance power value, or the sum of the required power value and the power balance power value may be floated up or down by a certain amplitude, or the sum of the required power value and the power balance power value may be multiplied by a certain coefficient, or the like.
In the embodiment, the power following value of the range extender is determined together according to two parameters, namely the required power value of the power utilization device and the electric quantity balance power value of the battery, and the influence of the electric quantity balance of the battery on the working condition of the range extender is fully considered, so that the determined power following value is more reasonable.
In some embodiments, step 120 may include:
and under the condition that the actual power value of the battery is in a rising state, determining a first filter coefficient according to a discharge power margin of the battery, wherein the discharge power margin is equal to a difference value between the maximum discharge power value and the actual power value of the battery, and the first filter coefficient is positively related to the discharge power margin.
And under the condition that the actual power value of the battery is in a descending state, determining a second filter coefficient according to the charging power margin of the battery, wherein the charging power margin is equal to the difference value between the actual power value and the maximum charging power value of the battery, and the second filter coefficient is positively related to the charging power margin.
Step 130 specifically includes:
in the case where the actual power value is in the rising state, the power following target value is filtered using the first filter coefficient.
In the case where the actual power value is in a falling state, the power following target value is filtered using the second filter coefficient.
The discharge power margin of the battery may also be referred to as a remaining available discharge power margin, which is related to an actual power value and a maximum discharge power value of the battery, and in particular, the discharge power margin of the battery may be equal to the maximum discharge power value of the battery minus the actual power value of the battery.
The charge power margin of the battery may also be referred to as a remaining available charge power margin, which is related to an actual power value and a maximum charge power value of the battery, and in particular, the charge power margin of the battery may be equal to the actual power value of the battery minus the maximum charge power value of the battery.
In this embodiment, when the actual power value of the battery increases, the power following target value is filtered by using a first filter coefficient, where the first filter coefficient may be determined according to the discharge power margin of the battery, specifically, a mapping relationship table of the discharge power margin and the first filter coefficient may be obtained in advance by means of simulation, experiment, etc., in which the first filter coefficient corresponding to each discharge power margin is recorded, and after the current discharge power margin is calculated, the first filter coefficient corresponding to the discharge power margin may be found by looking up the table.
The calculation formula of the first filter coefficient can be obtained in advance through means such as simulation and experiment, in the formula, the discharge power allowance can be used as an independent variable, the first filter coefficient is used as a dependent variable, and after the current discharge power allowance is calculated, the first filter coefficient corresponding to the current discharge power allowance can be obtained through formula calculation.
The larger the discharge power margin is, the larger the first filter coefficient is, the smoother the filtered following power value changes, whereas the smaller the discharge power margin is, the smaller the first filter coefficient is, and the faster the filtered following power value changes.
When the actual power value of the battery is reduced, the second filter coefficient is used for filtering the power following target value, the second filter coefficient can be determined according to the charging power margin of the battery, specifically, a mapping relation table of the charging power margin and the second filter coefficient can be obtained in advance through means of simulation, experiment and the like, the second filter coefficient corresponding to each charging power margin is recorded in the table, and after the current charging power margin is calculated, the second filter coefficient corresponding to the charging power margin can be found through table lookup.
The calculation formula of the second filter coefficient can be obtained in advance through means such as simulation and experiment, in the formula, the charging power allowance can be used as an independent variable, the second filter coefficient is used as an independent variable, and after the current charging power allowance is calculated, the second filter coefficient corresponding to the current charging power allowance can be obtained through formula calculation.
The larger the charging power margin is, the larger the second filter coefficient is, the smoother the change of the following power value after filtering is, and conversely, the smaller the charging power margin is, the smaller the second filter coefficient is, and the faster the change of the following power value after filtering is.
By way of example, fig. 2 is a graph provided in some embodiments of the present application and including a filtered following power value, where the y-axis represents the power value, the x-axis represents the time, (1), (2) and (3) are three inflection points of the actual power change process of the battery, and before the inflection point (1), the actual power of the battery is in an ascending state, at this time, a discharge power margin of the battery at this time may be known according to a difference between the actual power of the battery and a maximum discharge power of the battery, and a first filter coefficient may be known according to the discharge power margin, and since the discharge power margin is gradually decreased, the first filter coefficient is gradually decreased, and the filtered following power value is changed rapidly. After passing through the inflection point (1), the actual power of the battery is in a descending state, at this time, the charging power margin of the battery at this time can be obtained according to the difference between the actual power of the battery and the maximum charging power of the battery, and the second filter coefficient can be obtained according to the charging power margin, and since the charging power margin is gradually increased, the first filter coefficient is also gradually increased, and the following power value after filtering is slowly changed.
In this embodiment, the current discharge power margin or the charge power margin is determined according to whether the actual power value of the battery is in an ascending or descending state, so that the first filter coefficient is determined according to the discharge power margin, or the second filter coefficient is determined according to the charge power margin, then the actual power value of the battery is in an ascending state and is filtered according to the first filter coefficient, and the actual power value of the battery is in a descending state and is filtered according to the second filter coefficient, so that the filtered power following value is more reasonable.
In some embodiments, step 140 may comprise:
and under the condition that the discharging power margin of the battery is larger than a first threshold value and the charging power margin of the battery is larger than a second threshold value, controlling the output power of the range extender according to the filtered following power value.
The first threshold may be a preset threshold, and the second threshold may be a preset threshold.
When the discharging power margin of the battery is larger than the first threshold and the charging power margin of the battery is larger than the second threshold, the power margin of the battery at the moment is more sufficient, the battery is in a normal working condition at the moment, and at the moment, the range extender power control device can directly control the output power of the range extender according to the filtered following power value.
In this embodiment, since the power margin of the battery is still sufficient, the output power of the range extender is directly controlled according to the filtered following power value, so that the output power of the range extender can be ensured to better meet the requirements of the power consumption device and the battery.
In some embodiments, after step 140, the method may further comprise:
under the condition that the discharge power allowance of the battery is smaller than or equal to a first threshold value, determining the larger value of the first power reference value and the filtered following power value as a first power adjustment value, wherein the first power reference value is the difference value between the required power value and the maximum discharge power value of the battery;
and controlling the output power of the range extender according to the first power adjustment value.
When the discharge power margin of the battery is less than or equal to the first threshold, it indicates that the battery is relatively insufficient in the electric quantity at the moment, the battery cannot provide relatively sufficient electric energy at the moment and the battery has a large requirement for charging, for example, the discharge power margin of the battery is close to zero. At this time, if the output power of the range extender is directly controlled according to the filtered following power value, it may not be ensured that the output power of the range extender meets the power requirement of the electric device.
In view of this, the power control device of the range extender can properly increase the output power of the range extender to meet the power requirement of the power utilization device as much as possible.
For example, the filtered following power value may be compared with (demand power value-battery maximum discharge power value (+) ) And taking the large value as a first power adjustment value, and determining the first power adjustment value as an output power value of the range extender.
Of course, the output power value of the range extender may be a value obtained by floating up or floating down the first power adjustment value by a certain amplitude, or may be a value obtained by multiplying the first power adjustment value by a certain coefficient, which is not limited herein.
In this embodiment, it is proposed to appropriately increase the output power of the range extender when the discharge power margin is less than or equal to the first threshold value, so that the output power of the range extender is more reasonable.
In some embodiments, after step 140, the method may further comprise:
determining a smaller value of a second power reference value and a filtered following power value as a second power adjustment value under the condition that the charging power allowance of the battery is smaller than or equal to the second threshold value, wherein the second power reference value is a difference value between a required power value and a maximum charging power value of the battery;
And controlling the output power of the range extender according to the second power adjustment value.
When the charging power margin of the battery is smaller than or equal to the second threshold, the electric quantity of the battery is sufficient, the battery can provide sufficient electric energy at the moment, and the charging requirement of the battery is small, for example, the charging power margin of the battery is close to zero. At this time, if the output power of the range extender is controlled directly according to the filtered following power value, the output power of the range extender may be excessive.
In view of this, the power control device of the range extender can properly reduce the output power of the range extender to meet the power requirement of kinetic energy recovery as much as possible.
For example, the filtered following power value may be compared with (demand power value-battery maximum charge power value (-) ) And taking the small value as a second power adjustment value, and determining the second power adjustment value as an output power value of the range extender.
Of course, the output power value of the range extender may be a value obtained by floating up or floating down the second power adjustment value by a certain amplitude, or may be a value obtained by multiplying the second power adjustment value by a certain coefficient, which is not limited herein.
In this embodiment, it is proposed to appropriately reduce the output power of the range extender when the charging power margin is less than or equal to the second threshold value, so that the output power of the range extender is more reasonable.
By way of example, fig. 3 is a graph provided in accordance with further embodiments of the present application and having a filtered following power value, wherein the y-axis represents the power value and the x-axis represents the time, (4) and (5) are stages of the actual power value of the battery that remain unchanged, wherein when the discharge power margin of the battery is less than or equal to a first threshold value, the first power value may be determined by the difference between the required power value and the maximum discharge power value of the battery, and then the first power value and the filtered following power value are compared, and the output power of the range extender is controlled with the smaller value as a first power adjustment value, and when the charge power margin of the battery is less than or equal to a second threshold value, the second power value may be determined by the difference between the required power value and the maximum charge power value of the battery, and then the second power value and the filtered following power value are compared, and the larger value is used as a second power adjustment value, and the output power of the range extender is controlled.
A specific example is provided below in connection with fig. 4 to describe the range extender power control method according to the embodiment of the present application.
As shown in fig. 4, when the discharge power margin is greater than the first threshold and the charge power margin is greater than the second threshold, the required power value and the electric quantity balance power value are added to obtain a power following target value, the power following target value is filtered according to a filter coefficient detected by the power margin of the battery to obtain a filtered following power value, and the output power of the range extender is controlled by using the filtered following power value.
When the discharge power allowance is smaller than or equal to a first threshold value, calculating the difference value of the required power value and the maximum discharge power of the battery to obtain a first power reference value, comparing the first power reference value with the filtered following power value, determining a larger value as a first power adjustment value, and controlling the output power of the range extender through the first power adjustment value.
When the charging power allowance is smaller than or equal to a second threshold value, calculating a difference value between the required power value and the maximum charging power of the battery to obtain a second power reference value, comparing the second power reference value with the filtered following power value, determining the smaller value as a second power adjustment value, and controlling the output power of the range extender through the second power adjustment value.
In summary, the power control method for the range extender of the embodiment of the application uses the filtered following power value to control the output power of the range extender, so that the purposes of improving the efficiency of the range extender and improving the NVH performance of the power utilization device can be achieved.
Fig. 5 is a schematic structural diagram of a range extender power control device according to an embodiment of the present application. As shown in fig. 5, the range extender power control device 500 includes:
a first determining module 510, configured to determine a power following target value of the range extender according to a required power value of the power consumption device and a power parameter of the battery;
A second determining module 520, configured to determine a filter coefficient according to a power margin of the battery, where the filter coefficient is positively related to the power margin;
a filtering module 530, configured to filter the power following target value by using a filtering coefficient to obtain a filtered following power value;
the first control module 540 is configured to control the output power of the range extender according to the filtered following power value.
Optionally, the first determining module 510 is specifically configured to:
and determining a power following target value of the range extender according to the required power value of the electric device and the electric quantity balance power value of the battery, wherein the power following target value is in positive correlation with the required power value and the electric quantity balance power value.
Optionally, the second determining module 520 is specifically configured to:
under the condition that the actual power value of the battery is in a rising state, determining a first filter coefficient according to a discharge power allowance of the battery, wherein the discharge power allowance is equal to a difference value between the maximum discharge power value and the actual power value of the battery, and the first filter coefficient is positively related to the discharge power allowance;
under the condition that the actual power value of the battery is in a descending state, determining a second filter coefficient according to the charging power allowance of the battery, wherein the charging power allowance is equal to the difference value between the actual power value and the maximum charging power value of the battery, and the second filter coefficient is positively related to the charging power allowance;
The filtering module 530 is specifically configured to:
in the case where the actual power value is in the rising state, the power following target value is filtered using the first filter coefficient.
In the case where the actual power value is in a falling state, the power following target value is filtered using the second filter coefficient.
Optionally, the first control module 540 is specifically configured to:
and under the condition that the discharging power margin of the battery is larger than a first threshold value and the charging power margin of the battery is larger than a second threshold value, controlling the output power of the range extender according to the filtered following power value.
Optionally, the range extender power control device 500 further includes:
and the third determining module is used for determining a larger value of the first power reference value and the filtered following power value as a first power adjustment value under the condition that the discharge power margin of the battery is smaller than or equal to a first threshold value after the filtering coefficient is used for filtering the power target value to obtain the filtered following power value, wherein the first power reference value is the difference value between the required power value and the maximum discharge power value of the battery.
And the second control module is used for controlling the output power of the range extender according to the first power adjustment value.
Optionally, the range extender power control device 500 further includes:
a fourth determining module, configured to determine, after filtering the power target value using the filter coefficient to obtain a filtered following power value, a smaller value of the second power reference value and the filtered following power value as a second power adjustment value when a charging power margin of the battery is less than or equal to a second threshold value, where the second power reference value is a difference value between the required power value and a maximum charging power value of the battery;
and the third control module is used for controlling the output power of the range extender according to the second power adjustment value.
Each module/unit in the apparatus shown in fig. 5 has a function of implementing each step in the method embodiment, and can achieve a corresponding technical effect, which is not described herein for brevity.
As shown in fig. 6, the embodiment of the present application further provides an electrical device 600, including a range extender power control device 610, where the range extender power control device 610 has the same modules/units as the range extender power control device shown in fig. 5, and referring to the embodiment shown in fig. 5 specifically.
The power utilization device shown in fig. 6 has the function of implementing each step in the method embodiment, and can achieve the corresponding technical effects, and for brevity description, will not be repeated here.
Fig. 7 shows a schematic hardware structure of an electronic device according to an embodiment of the present application.
As shown in fig. 7, the electronic device may include a processor 701 and a memory 702 storing computer program instructions.
In particular, the processor 701 described above may include a central processing unit (Central Processing Unit, CPU), or an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), or may be configured to implement one or more integrated circuits of embodiments of the present application.
In particular, the processor 701 described above may include a central processing unit (Central Processing Unit, CPU), or an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), or may be configured to implement one or more integrated circuits of embodiments of the present application.
In one example, memory 702 may be Read Only Memory (ROM). In one example, the ROM may be mask-programmed ROM, programmable ROM (PROM), erasable PROM (EPROM), electrically Erasable PROM (EEPROM), electrically rewritable ROM (EAROM), or flash memory, or a combination of two or more of these.
The processor 701 reads and executes the computer program instructions stored in the memory 702 to implement any one of the range extender power control methods in the above embodiments, and achieves the corresponding technical effects achieved by executing the methods/steps in the examples shown in fig. 1 to 3, which are not described herein for brevity.
In one example, the electronic device may also include a communication interface 703 and a bus 710. As shown in fig. 7, the processor 701, the memory 702, and the communication interface 703 are connected by a bus 710 and perform communication with each other.
The communication interface 703 is mainly used for implementing communication between each module, device, unit and/or apparatus in the embodiments of the present application.
It should be noted that, the electronic device in the embodiment of the present application includes the mobile electronic device and the non-mobile electronic device described above.
The electronic device may execute the range extender power control method in the embodiment of the present application, thereby implementing the range extender power control method described in connection with fig. 1 to 4.
In combination with the range extender power control method in the above embodiment, the embodiment of the present application may provide a vehicle to implement any one of the range extender power control methods in the above embodiment.
In addition, in combination with the range extender power control method in the above embodiment, the embodiment of the application may provide a computer storage medium, where computer program instructions are stored on the computer storage medium; the computer program instructions, when executed by a processor, implement any of the methods of range extender power control of the above embodiments.
It should be clear that the present application is not limited to the particular arrangements and processes described above and illustrated in the drawings. For the sake of brevity, a detailed description of known methods is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present application are not limited to the specific steps described and illustrated, and those skilled in the art can make various changes, modifications, and additions, or change the order between steps, after appreciating the spirit of the present application.
The functional blocks shown in the above-described structural block diagrams may be implemented in hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), suitable firmware, a plug-in, a function card, or the like. When implemented in software, the elements of the present application are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine readable medium or transmitted over transmission media or communication links by a data signal carried in a carrier wave. A "machine-readable medium" may include any medium that can store or transfer information. Examples of machine-readable media include electronic circuitry, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio Frequency (RF) links, and the like. The code segments may be downloaded via computer networks such as the internet, intranets, etc.
It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be different from the order in the embodiments, or several steps may be performed simultaneously.
Aspects of the present disclosure are described above with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions/acts specified in the flowchart and/or block diagram block or blocks. Such a processor may be, but is not limited to being, a general purpose processor, a special purpose processor, an application specific processor, or a field programmable logic circuit. It will also be understood that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware which performs the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In the foregoing, only the specific embodiments of the present application are described, and it will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the systems, modules and units described above may refer to the corresponding processes in the foregoing method embodiments, which are not repeated herein. It should be understood that the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present application, which are intended to be included in the scope of the present application.
Claims (8)
1. A range extender power control method, comprising:
determining a power following target value of the range extender according to the required power value of the power utilization device and the power parameter of the battery;
determining a filter coefficient according to the power margin of the battery, wherein the filter coefficient is positively correlated with the power margin;
filtering the power following target value by using the filtering coefficient to obtain a filtered following power value;
controlling the output power of the range extender according to the filtered following power value;
and controlling the output power of the range extender according to the filtered following power value, including:
controlling the output power of the range extender according to the filtered following power value under the condition that the discharging power margin of the battery is larger than a first threshold value and the charging power margin of the battery is larger than a second threshold value;
after said filtering the power target value using the filter coefficient to obtain a filtered following power value, the method further comprises:
determining a larger value of a first power reference value and the filtered following power value as a first power adjustment value under the condition that the discharge power margin of the battery is smaller than or equal to the first threshold value, wherein the first power reference value is a difference value between the required power value and the maximum discharge power value of the battery;
And controlling the output power of the range extender according to the first power adjustment value.
2. The method of claim 1, wherein determining the power follow-up target value of the range extender based on the required power value of the power consumer and the power parameter of the battery comprises:
and determining a power following target value of the range extender according to the required power value of the power utilization device and the electric quantity balance power value of the battery, wherein the power following target value is positively correlated with the required power value and the electric quantity balance power value.
3. The method of claim 1, wherein determining filter coefficients based on a power margin of the battery comprises:
determining a first filter coefficient according to a discharge power margin of the battery under the condition that an actual power value of the battery is in a rising state, wherein the discharge power margin is equal to a difference value between a maximum discharge power value of the battery and the actual power value, and the first filter coefficient is positively related to the discharge power margin;
determining a second filter coefficient according to a charging power margin of the battery under the condition that the actual power value of the battery is in a descending state, wherein the charging power margin is equal to a difference value between the actual power value and a maximum charging power value of the battery, and the second filter coefficient is positively related to the charging power margin;
The filtering the power following target value using the filter coefficient includes:
filtering the power following target value by using the first filter coefficient under the condition that the actual power value is in a rising state;
and filtering the power following target value by using the second filter coefficient under the condition that the actual power value is in a descending state.
4. The method of claim 1, wherein after said filtering the power target value using the filter coefficients to obtain a filtered following power value, the method further comprises:
determining a smaller value of a second power reference value and the filtered following power value as a second power adjustment value under the condition that the charging power allowance of the battery is smaller than or equal to the second threshold value, wherein the second power reference value is a difference value between the required power value and the maximum charging power value of the battery;
and controlling the output power of the range extender according to the second power adjustment value.
5. A range extender power control device, comprising:
the first determining module is used for determining a power following target value of the range extender according to the required power value of the power utilization device and the power parameter of the battery;
The second determining module is used for determining a filter coefficient according to the power margin of the battery, and the filter coefficient is positively related to the power margin;
the filtering module is used for filtering the power following target value by using the filtering coefficient so as to obtain a filtered following power value;
the first control module is used for controlling the output power of the range extender according to the filtered following power value;
the first control module is specifically configured to control the output power of the range extender according to the filtered following power value when the discharge power margin of the battery is greater than a first threshold and the charge power margin of the battery is greater than a second threshold;
the apparatus further comprises:
a third determining module, configured to determine, as a first power adjustment value, a larger value of a first power reference value and the filtered following power value, where the first power reference value is a difference between the required power value and a maximum discharge power value of the battery, when a discharge power margin of the battery is less than or equal to the first threshold;
and the second control module is used for controlling the output power of the range extender according to the first power adjustment value.
6. An electrical device comprising the range extender power control device of claim 5.
7. An electronic device, comprising: a processor and a memory storing computer program instructions;
the processor reads and executes the computer program instructions to implement the range extender power control method of any one of claims 1 to 4.
8. A vehicle implementing the range extender power control method according to any one of claims 1 to 4.
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