CN116905605A

CN116905605A - Method, device, equipment and medium for determining power generation power of hybrid engineering machinery

Info

Publication number: CN116905605A
Application number: CN202310863829.3A
Authority: CN
Inventors: 张建; 王德诚; 迟峰; 张明颖; 王坤要; 王涛; 吴云清; 李蒙福
Original assignee: Shandong Lingong Construction Machinery Co Ltd
Current assignee: Shandong Lingong Construction Machinery Co Ltd
Priority date: 2023-07-13
Filing date: 2023-07-13
Publication date: 2023-10-20

Abstract

The invention discloses a method, a device, equipment and a medium for determining the generation power of a hybrid engineering machine. The method comprises the following steps: if the initial electric quantity of the current vehicle is greater than or equal to a first threshold value, starting a pure electric mode, and acquiring the operation parameters of the target device of the current vehicle; determining a phase time power consumption deviation average value in a pure electric operation mode according to the operation parameters of the target device; when the pure electric operation time reaches the preset pure electric operation time, starting a mixed operation mode, and determining a phase time power consumption standard deviation in the mixed operation mode according to the operation parameters of the target device and the phase time power consumption deviation average value; according to the technical scheme, the power generation power of the range extender can meet the consumption requirement of the whole machine, the charge and discharge capacity of a battery is reduced, and the fuel economy is improved.

Description

Method, device, equipment and medium for determining power generation power of hybrid engineering machinery

Technical Field

The embodiment of the invention relates to the technical field of vehicles, in particular to a method, a device, equipment and a medium for determining the generated power of a hybrid engineering machine.

Background

The hybrid loader not only inherits the excellent performance of the electric loader, but also can realize longer endurance through the efficient range extender. At present, a control strategy of a hybrid loader mainly comprises a rule-based power generation strategy (for example, a fixed-point power generation strategy and a power following strategy) and an optimization-based power generation strategy, wherein the fixed-point power generation strategy has high reliability, so that a range extender can stably work at an optimal oil consumption point, but a battery has larger charge and discharge loss in the process, and the optimal oil consumption of the whole vehicle cannot be realized; the power following strategy can enable the range extender to generate power along with the power consumption of the whole machine, but the power change of the whole machine is faster, and the frequent switching of the generated power causes that the range extender cannot stably work for a long time, so that the oil consumption is increased; based on an optimized intelligent power generation strategy, for example, an optimal power generation point is found by utilizing an optimization algorithm such as a particle swarm, and the intelligent power generation system is mostly used for simulation, is limited by factors such as the calculation capacity and cost of a vehicle chip, and is difficult to apply practically. Therefore, how to achieve reasonable matching of the power generation power of the range extender is particularly critical to improving the fuel economy.

Disclosure of Invention

The embodiment of the invention provides a method, a device, equipment and a medium for determining the power generation power of a hybrid engineering machine, which can enable the power generation power of a range extender to meet the consumption requirement of a whole machine, reduce the charge and discharge quantity of a battery and improve the fuel economy.

According to an aspect of the present invention, there is provided a hybrid engineering machine generated power determining method, including:

if the initial electric quantity of the current vehicle is greater than or equal to a first threshold value, starting a pure electric mode, and acquiring the operation parameters of the target device of the current vehicle;

determining a phase time power consumption deviation average value in a pure electric operation mode according to the operation parameters of the target device;

when the pure electric operation time reaches the preset pure electric operation time, starting a mixed operation mode, and determining a phase time power consumption standard deviation in the mixed operation mode according to the operation parameters of the target device and the phase time power consumption deviation average value;

and determining the target power generation power of the range extender according to the standard deviation of the phase time power consumption.

According to another aspect of the present invention, there is provided a hybrid construction machine generated power determining apparatus including:

the starting module is used for starting a pure electric mode and acquiring the operation parameters of the target device of the current vehicle if the initial electric quantity of the current vehicle is greater than or equal to a first threshold value;

the first determining module is used for determining a phase time power consumption deviation average value in a pure electric working mode according to the operation parameters of the target device;

The second determining module is used for starting a mixed operation mode when the pure electric operation time reaches the preset pure electric operation time, and determining the standard deviation of the phase time power consumption in the mixed operation mode according to the operation parameters of the target device and the average value of the phase time power consumption deviations;

and the third determining module is used for determining the target power generation power of the range extender according to the standard deviation of the phase time power consumption.

According to another aspect of the present invention, there is provided an electronic apparatus including:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein,,

the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the hybrid engineering machine generation power determination method according to any one of the embodiments of the present invention.

According to another aspect of the present invention, there is provided a computer readable storage medium storing computer instructions for causing a processor to implement the hybrid engineering machine generated power determination method according to any embodiment of the present invention when executed.

According to the embodiment of the invention, if the initial electric quantity of the current vehicle is greater than or equal to the first threshold value, a pure electric mode is started, and the running parameters of the target device of the current vehicle are obtained; determining a phase time power consumption deviation average value in a pure electric operation mode according to the operation parameters of the target device; when the pure electric operation time reaches the preset pure electric operation time, starting a mixed operation mode, and determining a phase time power consumption standard deviation in the mixed operation mode according to the operation parameters of the target device and the phase time power consumption deviation average value; the target power generation power of the range extender is determined according to the standard deviation of the phase time power consumption, the problem that the fuel economy is low because the power generation power of the range extender cannot be reasonably matched is solved, the power generation power of the range extender can meet the consumption requirement of the whole machine, the charge and discharge quantity of a battery is reduced, and the fuel economy is improved.

It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a flow chart of a method for determining the generated power of a hybrid construction machine according to a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a hybrid engineering machine power generation determining device in a second embodiment of the present invention;

fig. 3 is a schematic structural diagram of an electronic device according to a third embodiment of the present invention.

Detailed Description

In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It will be appreciated that prior to using the technical solutions disclosed in the embodiments of the present disclosure, the user should be informed and authorized of the type, usage range, usage scenario, etc. of the personal information related to the present disclosure in an appropriate manner according to the relevant legal regulations.

Example 1

Fig. 1 is a flowchart of a method for determining power generated by a hybrid engineering machine according to a first embodiment of the present invention, where the method may be implemented by a hybrid engineering machine power generation determining device according to an embodiment of the present invention, and the device may be implemented in software and/or hardware, as shown in fig. 1, and the method specifically includes the following steps:

s110, if the initial electric quantity of the current vehicle is greater than or equal to a first threshold value, starting a pure electric mode, and acquiring the operation parameters of the target device of the current vehicle.

The first threshold value can be set according to actual requirements. The pure electric mode is when the vehicle enters into the pure electric mode, and in the pure electric mode, the whole energy is all sourced from the power battery. The target devices may include a travel motor, a hydraulic motor, a direct current converter (DCDC), and may also include a battery management system of the vehicle. The operating parameters may be the bus current and bus voltage of the target device, or the battery discharge and battery charge of the battery management system of the vehicle over a period of time.

Specifically, if the initial electric quantity of the current vehicle is greater than or equal to the first threshold, the pure electric mode is started, and the mode of acquiring the operation parameter of the target device of the current vehicle may be: acquiring initial electric quantity of a current vehicle, if the initial electric quantity is larger than or equal to a first threshold value, directly starting a pure electric mode, and acquiring operation parameters of a target device of the current vehicle in the pure electric mode; if the initial electric quantity is smaller than the first threshold, the battery electric quantity is too low, the range extender can be started to generate power at rated power until the battery electric quantity is larger than or equal to a preset threshold, wherein the preset threshold can be set to be 110% of the first threshold, adjustment can be performed according to actual requirements, then the range extender is stopped to work, a pure electric mode is started, and the running parameters of the current vehicle target device are obtained.

S120, determining a phase time power consumption deviation average value in the pure electric operation mode according to the operation parameters of the target device.

The phase time is a time period formed by at least one unit time, wherein the unit time is a preset period time, and the unit time can be set according to actual requirements. The average value of the phase time power consumption deviation is the average value of the power consumption deviations corresponding to all the unit time in the phase time under the pure electric operation mode.

Specifically, the method for determining the phase time power consumption deviation average value in the pure electric operation mode according to the operation parameters of the target device may be: and determining the pure power consumption and the complete machine power consumption of at least one unit time in the pure electric working mode according to the operation parameters of the target device, determining the power consumption deviation corresponding to the at least one unit time according to the pure power consumption and the complete machine power consumption of the at least one unit time, and determining the phase time power consumption deviation average value according to the power consumption deviation corresponding to the at least one unit time.

And S130, when the pure electric operation time reaches the preset pure electric operation time, starting a mixed operation mode, and determining the standard deviation of the phase time power consumption in the mixed operation mode according to the operation parameter of the target device and the average value of the phase time power consumption deviation.

The preset pure electric working time can be set according to actual requirements.

Specifically, when the pure electric operation time reaches the preset pure electric operation time, the hybrid operation mode is started, and the mode of determining the standard deviation of the phase time power consumption in the hybrid operation mode according to the operation parameter of the target device and the average value of the phase time power consumption deviation may be as follows: when the pure electric operation time of the current vehicle reaches the preset pure electric operation time, starting a mixed operation mode, then acquiring the operation parameters of a target device in the mixed operation mode, determining the power consumption of each unit time in the mixed operation mode according to the operation parameters of the target device in the mixed operation mode and the average value of the phase time power consumption deviations in the pure electric operation mode, and obtaining the standard deviation of the phase time power consumption in the mixed operation mode according to the power consumption of each unit time.

And S140, determining the target power generation power of the range extender according to the standard deviation of the phase time power consumption.

The target power generation power is the power generation power which enables the range extender to stably work in the mixed working mode.

Specifically, the method for determining the target power generation power of the range extender according to the standard deviation of the phase time power consumption may be: and determining the power generation time of the range extender according to the standard deviation of the phase time power consumption in all the mixed working modes, and determining the target power generation of the range extender according to the current power generation time of the range extender and the power generation time of the range extender. It should be noted that, the power generation time of the range extender may be determined according to the phase time power consumption variance in the hybrid working mode, and the target power of the range extender may be determined according to the current power generation time of the range extender and the power generation time of the range extender.

Optionally, determining the phase time power consumption deviation average value in the pure electric working mode according to the operation parameter of the target device includes:

acquiring the rotating speed of a hydraulic motor in a pure electric mode;

determining a first effective working time according to the rotating speed of the hydraulic motor in a pure electric working mode;

determining pure electric unit power consumption corresponding to each unit time in the pure electric operation mode according to the first effective operation time and the first unit time;

Determining the power consumption of the whole unit corresponding to each unit time according to the first effective working time, the first unit time and the operation parameters of the target device;

and determining a phase time power consumption deviation average value in a pure electric working mode according to the pure electric unit power consumption and the whole machine unit power consumption.

The first effective working time is the time for the hydraulic motor to stably work in the pure electric working mode. The first unit time is a preset cycle time in a pure electric mode, and it is to be noted that the number of specific unit times is related to the initial electric quantity of the vehicle and the working condition. The power consumption of the pure electric unit is the power consumption of each unit time within the first effective operation time in the pure electric operation mode. The unit power consumption of the whole machine is the power consumption of the whole machine of each unit time in the first effective working time. The phase time power consumption deviation average value in the pure electric mode is the power consumption deviation average value of the phase time formed by each unit time in the first effective working time in the pure electric mode.

Specifically, the manner of obtaining the rotational speed of the hydraulic motor in the pure electric mode may be: and after power-on, the whole machine monitors the working of the hydraulic motor, and the rotating speed of the hydraulic motor is obtained.

Specifically, the manner of determining the first effective working time according to the rotational speed of the hydraulic motor in the pure electric working mode may be: when the rotating speed of the hydraulic motor is acquired, if the rotating speed of the hydraulic motor is larger than a second threshold value, and the duration time when the rotating speed of the hydraulic motor is larger than the second threshold value is larger than a third threshold value, wherein the second threshold value and the third threshold value can be set according to actual requirements, the effective working starting time in the pure electric mode is considered at the moment, and all the time from the effective working starting time to the preset pure electric time is the first effective working time.

Specifically, the manner of determining the power consumption of the pure electric unit corresponding to each unit time in the pure electric operation mode according to the first effective operation time and the first unit time may be: the first unit time is set, the first effective working time can be divided into a plurality of unit times according to the first effective time and the first unit time, and the pure electric unit power consumption corresponding to each unit is determined according to the accumulated discharge quantity and the accumulated charge quantity corresponding to each unit in the battery management system of the vehicle.

Specifically, the manner of determining the power consumption of the whole unit corresponding to each unit time according to the first effective working time, the first unit time and the operation parameter of the target device may be: and calculating the unit time power consumption of each target device corresponding to each unit time according to the first effective working time, the first unit time and the voltage and current of the target device, and obtaining the whole machine unit power consumption corresponding to each unit time according to the unit time power consumption of each target device.

Specifically, the method for determining the average value of the phase time power consumption deviation in the pure electric operation mode according to the pure electric unit power consumption and the whole machine unit power consumption may be: and determining the power consumption deviation corresponding to each unit time according to the pure electric unit power consumption corresponding to each unit time and the whole machine unit power consumption corresponding to each unit time, and obtaining the phase time power consumption deviation average value under the pure electric working mode according to the power consumption deviation corresponding to each unit time.

For example, if in the pure electric mode, the first effective operation time starts at a time T ₀ The first unit time is T _m At T ₀ At the moment, the accumulated discharge electric quantity in the battery management system is BatDischgT ₀ The accumulated charge quantity is BatchgT ₀ And start timing when the timing satisfies the first unit time T _m At the time, it is marked as T _m1 Recording the accumulated discharge electric quantity in the battery management system as BatDischgT _m1 The accumulated charge quantity is BatchgT _m1 The power consumption of the pure electric unit in the first effective working time is recorded as WBatt _m1 The calculation formula may be:

WBatT _m1 ＝(BatDischgT _m1 -BatDischgT ₀ )-(BatChgT _m1 -BatChgT ₀ )；

meanwhile, bus voltage and bus current of a walking motor, a hydraulic motor and DCDC in the target device are obtained, power of the walking motor, the hydraulic motor and the DCDC is obtained according to the bus voltage and the bus current of the walking motor, the hydraulic motor and the DCDC, and power consumption WBefValT of the whole unit corresponding to each unit time is obtained according to the power of the walking motor, the hydraulic motor and the DCDC _m1 The calculation formula may be:

wherein P is _mcu1 For the working power of the walking motor controller, P _mcu2 For the working power of the hydraulic motor controller, P _DCDC And the working power of the DCDC module is calculated.

Based on the current power consumption WBatt of the pure electric unit _m1 And the whole unit consumes WBefValT _m1 Obtaining the power consumption deviation WErrT of the time of the sub-unit _m1 Calculation formulaThe formula may be:

WErrT _m1 ＝WBatT _m1 -WBefValT _m1 ；

according to the formula, the pure electric unit power consumption WBatt corresponding to each unit time in the first effective working time in the pure electric mode can be calculated _m1 、WBatT _m2 、……WBatT _mx Whole unit power consumption WBefValT corresponding to each unit time _m1 、WBefValT _m2 、……WBefValT _mx Power consumption deviation WErrT corresponding to each unit time _m1 、WErrT _m2 、……WErrT _mx And obtaining a phase time power consumption deviation average value WEleErrAv of the pure electric operation mode according to the power consumption deviation corresponding to each unit time in the first effective operation time in the pure electric operation mode, wherein the calculation formula can be as follows:

the rotating speed of the hydraulic motor in the pure electric mode is obtained; determining a first effective working time according to the rotating speed of the hydraulic motor in a pure electric working mode; determining pure electric unit power consumption corresponding to each unit time in the pure electric operation mode according to the first effective operation time and the first unit time; determining the power consumption of the whole unit corresponding to each unit time according to the first effective working time, the first unit time and the operation parameters of the target device; the phase time power consumption deviation mean value under the pure electric mode is determined according to the pure electric unit power consumption and the whole electric unit power consumption, the pure electric unit power consumption and the whole electric unit power consumption under the pure electric mode can be accurately obtained, meanwhile, the pure electric unit power consumption is taken as a reference, the phase time power consumption deviation mean value is obtained, one-to-one consideration on consumption of other accessories of the whole electric vehicle can be omitted, and the accuracy and the efficiency of calculation are improved.

Optionally, determining the power consumption of the whole unit corresponding to each unit time according to the first effective working time, the first unit time and the operation parameter of the target device includes:

determining the working power of the target device at the starting moment corresponding to each unit time according to the operation parameters of the target device;

and determining the power consumption of the whole unit corresponding to each unit time according to the first effective working time, the first unit time and the working power of the starting moment corresponding to each unit time.

The starting time corresponding to each unit time is the ending time corresponding to the previous unit time. The working power can be calculated according to the bus current and the bus voltage of the target device.

Specifically, the manner of determining the working power of the target device at the start time corresponding to each unit time according to the operation parameter of the target device may be: and collecting bus currents and bus voltages of the walking motor, the hydraulic motor and the DCDC in the target device, and calculating working power at the starting moment corresponding to each unit time according to the bus currents and the bus voltages of the walking motor, the hydraulic motor and the DCDC.

Specifically, the determining the power consumption of the whole unit corresponding to each unit time according to the first effective working time, the first unit time and the working power of the starting time corresponding to each unit time may be: and determining the power consumption of each target device in the first unit time according to the first unit time and the working power of each target device at the starting time corresponding to each unit time, and determining the sum of the power consumption of all the target devices in the first unit time as the power consumption of the whole unit corresponding to each unit time.

For example, the target device may be a traveling motor, a hydraulic motor, and DCDC, and the operation parameters may be a bus current and a bus voltage of the target device, and the operating power at the start time corresponding to each unit time of the traveling motor, the operating power at the start time corresponding to each unit time of the hydraulic motor, and the operating power at the start time corresponding to each unit time of the DCDC may be obtained from the bus current and the bus voltage, respectively, for example, at T ₀ The working power of the walking motor corresponding to the moment is P _mcu1 The working power of the hydraulic motor is P _mcu2 The working power of DCDC is P _DCDC Then at timing T _m1 Calculating the power consumption WBefValT of the whole unit _m1 The calculation formula may be:

determining the working power of the target device at the starting moment corresponding to each unit time according to the operation parameters of the target device; the power consumption of the whole unit corresponding to each unit time is determined according to the first effective working time, the first unit time and the working power of the starting moment corresponding to each unit time, and the power consumption of the whole unit corresponding to each unit time can be rapidly and accurately determined without the need of range extender data on the premise that the range extender data are difficult to accurately acquire.

Optionally, when the pure electric operation time reaches the preset pure electric operation time, starting a hybrid operation mode, including:

determining phase time average power in a pure electric working mode according to pure electric unit power consumption corresponding to each unit time;

determining the phase time average power in the pure electric operation mode as the initial power generation power of the range extender when the mixed operation mode is started;

when the pure electric operation time reaches the preset pure electric operation time, the range extender starts the hybrid operation mode with the initial generated power.

The phase time average power is the average power of all power consumption of the pure electric units in the phase time. The initial power of the range extender is the requested power of the range extender when the range extender just begins to work.

Specifically, the manner of determining the phase-time average power in the pure electric operation mode according to the pure electric unit power consumption corresponding to each unit time may be: and determining a phase time power consumption average value in the pure electric operation mode according to the pure electric unit power consumption corresponding to each unit time, and determining the phase time average power according to the phase time power consumption average value in the pure electric operation mode and the first unit time.

Specifically, the method for determining the phase time average power in the pure electric operation mode as the initial power of the range extender when the hybrid operation mode is started may be as follows: and determining the calculated phase time average power in the pure electric operation mode as the initial power generation power of the range extender when the mixed operation mode is started, namely the requested power generation power when the range extender starts to work.

Specifically, when the pure electric operation time reaches the preset pure electric operation time, the mode of enabling the range extender to start the hybrid operation mode with the initial generated power may be: when the pure electric operation time reaches the preset pure electric operation time, the range extender starts to work with the initial generated power, and the vehicle enters a hybrid operation mode.

For example, the calculation manner of the phase time power consumption average value WEleAve in the pure electric operation mode may be that all the pure electric unit power consumption in the whole pure electric operation mode is calculated:

if T _m If the unit of (a) is min, the calculation mode of the phase time average power PEleAve in the pure electric operation mode may be:

the range extender can work with the phase time average power PEleAve as the initial generated power and start the hybrid operating mode.

Determining the phase time average power in the pure electric operation mode as the initial power generation power of the range extender when the hybrid operation mode is started; when the pure electric operation time reaches the preset pure electric operation time, the range extender starts the hybrid operation mode with the initial generated power, so that the vehicle can keep stable operation when the operation mode changes, and the charge and discharge capacity of the battery can be reduced.

Optionally, determining the standard deviation of the phase time power consumption in the hybrid working mode according to the operation parameter of the target device and the average value of the phase time power consumption deviation includes:

Acquiring the rotating speed of a hydraulic motor in a mixed operation mode;

determining a second effective working time according to the rotating speed of the hydraulic motor in the mixed working mode;

determining the power consumption of the mixing unit corresponding to each unit time in the mixing operation mode according to the second effective operation time, the second unit time, the operation parameters of the target device and the phase time power consumption deviation average value;

determining a phase time power consumption average value under a mixed operation mode according to the mixed unit power consumption corresponding to each unit time;

and determining the standard deviation of the phase time power consumption in the mixed operation mode according to the mixed unit power consumption corresponding to each unit time and the average value of the phase time power consumption in the mixed operation mode.

The second effective working time is the time for the hydraulic motor to work stably in the mixed working mode. The second unit time is a preset cycle time in the hybrid operation mode, and may be set to be the same time as the first unit time or may be set to be a different time from the first time. The mixing unit power consumption is the mixing power consumption corresponding to each unit time in the second effective operation time in the mixing operation mode. The average value of power consumption of the phase time in the mixed operation mode is the average value of power consumption corresponding to at least two second unit times, wherein the phase time can comprise at least two second unit times. The standard deviation of the power consumption of the phase time in the mixed operation mode can be the standard deviation of the power consumption of different phase time, and can have a plurality of standard deviations, for example, 2*T _n 、3*T _n 、……N*T _n Standard deviation of power consumption for the different phase times. It should be noted that, there are different target minimum time T of stable operation requirements for different range extenders _Low If the working period of the whole machine is considered at the same time, the maximum time can be set as T _High Setting a second unit time T _n Wherein T is _High ＝N*T _n 。

Specifically, the manner of obtaining the rotation speed of the hydraulic motor in the hybrid working mode may be: after the mixed operation mode is started, the hydraulic motor is monitored to work the whole machine, and the rotating speed of the hydraulic motor is obtained.

Specifically, the manner of determining the second effective working time according to the rotation speed of the hydraulic motor in the hybrid working mode may be: when the rotating speed of the hydraulic motor in the mixed operation mode is acquired, if the rotating speed of the hydraulic motor is larger than a second threshold value, and the duration time when the rotating speed of the hydraulic motor is larger than the second threshold value is larger than a third threshold value, wherein the second threshold value and the third threshold value can be set according to actual requirements, the effective operation starting time in the mixed operation mode is considered at the moment, and the time after the effective operation starting time is the second effective operation time.

Specifically, the method for determining the power consumption of the mixing unit corresponding to each unit time in the mixing operation mode according to the second effective operation time, the second unit time, the operation parameter of the target device and the phase time power consumption deviation average value may be: and setting a second unit time, setting a plurality of unit times according to the second unit time and the second effective working time, and determining the power consumption of the mixing unit corresponding to each unit time in the mixing working mode according to the plurality of unit times, the operating parameters of the target device and the phase time power consumption deviation average value.

Specifically, the method for determining the average value of the phase time power consumption in the mixing operation mode according to the power consumption of the mixing unit corresponding to each unit time may be: and calculating the average power consumption value in the stage time according to the number of the second unit time in the stage time and the power consumption of the mixing unit corresponding to each unit time. Wherein the number of second unit times within the phase time includes at least two second unit times.

Specifically, the method for determining the standard deviation of the phase time power consumption in the mixed operation mode according to the average value of the power consumption of the mixed unit corresponding to each unit time and the phase time power consumption in the mixed operation mode may be: and obtaining a plurality of different standard deviations of phase time power consumption in the mixed operation mode according to the mixed unit power consumption corresponding to each unit time and the average value of the phase time power consumption in the mixed operation mode, wherein the phase time can comprise at least two second unit times.

For example, if the second unit time is T _n The power consumption of the mixing unit can be calculated by the following steps:

wherein WHybT _ny For the power consumption of the mixing unit corresponding to the y second unit time in the mixing operation mode, T _ny-1 For the end time of the y-1 th second unit time, i.e. the start time of the y-th second unit time, T _ny For the ending time of the y second unit time, the power consumption WHybT of the mixing unit corresponding to each unit time can be obtained according to the formula _n1 、WHybT _n2 、……WHybT _ny 。

To mixing unit consumption WHybT _n1 、WHybT _n2 、……WHybT _ny Averaging to obtain a phase time power consumption average WHYbAveT from the first second unit time to the y second unit time in the mixed operation mode _ny The calculation formula may be:

according to the power consumption WHybT of the mixing unit corresponding to each unit time _n1 、WHybT _n2 、……WHybT _ny And phase time power consumption average WHYbAveT in hybrid operating mode _ny Calculating phase time power consumption standard deviation WHybSigma T in mixed operation mode _ny The formula of (c) may be:

optionally, determining the target power generation power of the range extender according to the standard deviation of the phase time power consumption includes:

generating a standard deviation set according to the phase time power consumption standard deviation in the mixed operation mode;

determining the minimum standard deviation in the standard deviation set as a first standard deviation;

determining a first power generation time according to the phase time corresponding to the first standard deviation;

and determining the target power generation power of the range extender according to the first power generation time and the phase time power consumption corresponding to the first power generation time.

The standard deviation set is a set generated by the standard deviation of the power consumption of the phase time obtained in different phase time. The first standard deviation is the minimum standard deviation in the standard deviation set, and the first standard deviation can be updated in an iterative manner as the standard deviation set can be calculated and updated in real time along with the working time of the range extender. The first power generation time is the phase time corresponding to the first standard deviation, namely the sum of all the second unit times in the phase time corresponding to the first standard deviation. The phase time power consumption corresponding to the first power generation time is the sum of the power consumption of the mixing units corresponding to all the second unit time in the phase time corresponding to the first power generation time. The target power of the range extender is the requested power of the range extender after the range extender starts at the second effective working time, and the target power of the range extender can be updated iteratively because the first standard deviation can be updated iteratively.

Specifically, the mode of generating the standard deviation set according to the phase time power consumption standard deviation in the hybrid operating mode may be: the standard deviation set is generated for the power consumption standard deviation corresponding to different phase times in the hybrid operating mode.

Specifically, the mode of determining the minimum standard deviation in the standard deviation set as the first standard deviation may be: and determining the minimum standard deviation as the first standard deviation if the minimum standard deviation in the standard deviation set is the optimal value of the working of the range extender stage time. For example, 2*T may be included in the standard deviation set _n 、3*T _n 、……N*T _n Standard deviation of power consumption whybσt for different phase times _n2 、WHybσT _n3 、……WHybσT _nN Comparing all standard deviations in the standard deviation set, selecting the minimum value of the standard deviations as a first standard deviation, and recording the first standard deviation as WHyb sigma T _nZ 。

Specifically, the manner of determining the first power generation time according to the phase time corresponding to the first standard deviation may be: and determining the phase time corresponding to the first standard deviation as the optimal first power generation time, namely the power generation time requested by the range extender. For example, if the first standard deviation is WHybσT _nZ The phase time T corresponding to the first standard deviation _nZ For the first power generation time, T _nZ Containing Z T _n 。

Specifically, the method for determining the target generated power of the range extender according to the first generated time and the phase time power consumption corresponding to the first generated time may be: and determining the quotient of the phase time power consumption corresponding to the first power generation time and the first power generation time as the target power generation power of the range extender. The method for determining the target power of the range extender according to the first power generation time and the phase time power consumption corresponding to the first power generation time may further be: and determining the target power generation power of the range extender according to the relationship among the current power generation time, the first power generation time and the target shortest time of the range extender. For example, if the first power generation time is T _nZ The unit is min, the phase time power consumption corresponding to the first power generation time is the sum of the power consumption of the first Z mixing units, and the target power generation power Pwrrcuereq of the range extender _Z The calculation formula of (2) can be:

generating a standard deviation set according to the phase time power consumption standard deviation in the mixed operation mode; determining the minimum standard deviation in the standard deviation set as a first standard deviation; determining a first power generation time according to the phase time corresponding to the first standard deviation; the target power generation power of the range extender is determined according to the first power generation time and the phase time power consumption corresponding to the first power generation time, and the first power generation time and the target power generation power of the range extender can be determined through standard deviation, so that the range extender can meet the power consumption requirement of the whole machine to the greatest extent.

Optionally, determining the target power of the range extender according to the first power generation time and the phase time power consumption corresponding to the first power generation time includes:

determining first power generation according to the first power generation time and the phase time power consumption corresponding to the first power generation time;

if the first power generation time is less than or equal to the range extender target shortest time, or if the first power generation time is greater than Yu Zengcheng and the current power generation time is less than or equal to the range extender target shortest time, determining the first power generation time as the target power generation time of the range extender and determining the first power generation power as the target power generation power of the range extender;

If the first power generation time is larger than the target shortest time of the Yu Zengcheng device and the current power generation time is larger than the target shortest time of the Yu Zengcheng device, determining a second standard deviation according to the current power generation time;

if the second standard deviation is smaller than the first standard deviation, determining the second power generation time corresponding to the second standard deviation as the target power generation time of the range extender, and determining the second power generation power corresponding to the second power generation time as the target power generation power of the range extender.

The first power generation is a quotient of the power consumption of the stage time corresponding to the first power generation time and the first power generation time, and may be the target power generation power or a value needed to be used in the process of determining the target power generation power. The shortest time of the range extender target can be set to be different shortest time according to different range extenders, and is the shortest time required by stable operation of the range extender. The target power generation time is the requested power generation time of the range extender. The current power generation time can be obtained by starting to count along with the starting of the range extender, or can be obtained by resetting the current power generation time and then counting again when the target power generation power is subjected to iterative updating. The second standard deviation is the minimum standard deviation selected from the updated standard deviation set according to the updated standard deviation set of the current power generation time. The second power generation time is the phase time corresponding to the second standard deviation. The second power generation power can be calculated according to the phase time power consumption corresponding to the second power generation time and the second power generation time.

Specifically, the manner of determining the first power according to the first power generation time and the phase time power consumption corresponding to the first power generation time may be: and determining the quotient of the phase time power consumption corresponding to the first power generation time and the first power generation time as the first power generation power.

Specifically, if the first power generation time is less than or equal to the range extender target minimum time, or if the first power generation time is greater than Yu Zengcheng by the range extender target minimum time and the current power generation time is less than or equal to the range extender target minimum time, the manner of determining the first power generation time as the target power generation time of the range extender and determining the first power generation as the target power generation power of the range extender may be: if the first power generation time is less than or equal to the target shortest time for the range extender to stably work, or if the first power generation time is greater than Yu Zengcheng and the current power generation time of the range extender is less than or equal to the target shortest time of the range extender, determining the target power generation time of the range extender as the first power generation time, and enabling the range extender to execute the target power generation according to the target power generation time.

Specifically, if the first power generation time is greater than Yu Zengcheng and the current power generation time is greater than Yu Zengcheng, the method for determining the second standard deviation according to the current power generation time may be: if the first power generation time is larger than the target shortest time of the Yu Zengcheng device, the phase time power consumption average value of the new iteration is redetermined according to the current power generation time, an updated standard deviation set is further determined, and the minimum standard deviation in the updated standard deviation set is determined to be the second standard deviation.

Specifically, if the second standard deviation is smaller than the first standard deviation, the manner of determining the second power generation time corresponding to the second standard deviation as the target power generation time of the range extender and determining the second power generation power corresponding to the second power generation time as the target power generation power of the range extender may be: if the second standard deviation is smaller than the first standard deviation, determining the phase time corresponding to the second standard deviation as second power generation time corresponding to the second standard deviation, determining the second power generation time corresponding to the second standard deviation as target power generation time of the range extender, determining second power generation corresponding to the second power generation time according to the second power generation time and the phase time power consumption corresponding to the second power generation time, and determining the second power generation power corresponding to the second power generation time as target power generation power of the range extender.

For example, when the range extender generates power at the initial power generation power, the current power generation time T _α Starting timing, and iteratively updating the standard deviation set if the first standard deviation is WHyb sigma T _nZ The first power generation time is T _nZ The shortest time of the range extender target is T _Low Then when T _nZ ≤T _Low When not taking into consideration T _α And T is _nZ The range extender generates power according to the target time T _nZ Execution target power Pwrrcueq _Z The method comprises the steps of carrying out a first treatment on the surface of the When T is _nZ >T _Low And T is _α ≤T _Low When the range extender still generates power according to the target power generation time T _nZ Execution target power Pwrrcueq _Z The method comprises the steps of carrying out a first treatment on the surface of the If T _nZ >T _Low And T is _α ＞T _Low Comparing the second standard deviation WHybSigma T obtained by iterative update _nQ If WHybσT _nQ <WHybσT _nZ Then according to the second standard deviation WHybσT _nQ Calculating to obtain new target power Pwrrcueq _Q Second standard deviation WHybσT _nQ Corresponding phase time T _nQ As the new target power generation time, the range extender takes the new target power generation time T _nQ Performing a new target generated power PwrRcuReq _Q At the same time T _α Zero clearing; by performing iteration in this way, the target power generation time and the target power generation power of the range extender can be continuously updated.

Determining a first power generation by power consumption according to the first power generation time and a phase time corresponding to the first power generation time; if the first power generation time is less than or equal to the range extender target shortest time, or if the first power generation time is greater than Yu Zengcheng and the current power generation time is less than or equal to the range extender target shortest time, determining the first power generation time as the target power generation time of the range extender and determining the first power generation power as the target power generation power of the range extender; if the first power generation time is larger than the target shortest time of the Yu Zengcheng device and the current power generation time is larger than the target shortest time of the Yu Zengcheng device, determining a second standard deviation according to the current power generation time; if the second standard deviation is smaller than the first standard deviation, determining the second power generation time corresponding to the second standard deviation as the target power generation time of the range extender, and determining the second power generation power corresponding to the second power generation time as the target power generation power of the range extender, so that the target power generation time and the target power generation power of the range extender can be continuously and iteratively updated, the power consumption requirement of the whole machine is met, and the fuel economy is improved.

According to the technical scheme, if the initial electric quantity of the current vehicle is larger than or equal to a first threshold value, a pure electric mode is started, and the operation parameters of the target device of the current vehicle are obtained; determining a phase time power consumption deviation average value in a pure electric operation mode according to the operation parameters of the target device; when the pure electric operation time reaches the preset pure electric operation time, starting a mixed operation mode, and determining a phase time power consumption standard deviation in the mixed operation mode according to the operation parameters of the target device and the phase time power consumption deviation average value; the target power generation power of the range extender is determined according to the standard deviation of the phase time power consumption, the problem that the fuel economy is low because the power generation power of the range extender cannot be reasonably matched is solved, the power generation power of the range extender can meet the consumption requirement of the whole machine, the charge and discharge quantity of a battery is reduced, and the fuel economy is improved.

Example two

Fig. 2 is a schematic structural diagram of a hybrid engineering machine power generation determining device in a second embodiment of the present invention. The embodiment may be applicable to the situation that the power generated by the range extender is matched, the device may be implemented in a software and/or hardware manner, and the device may be integrated in any device that provides a function of determining the power generated by the hybrid engineering machine, as shown in fig. 2, where the device specifically includes: a start-up module 210, a first determination module 220, a second determination module 230, and a third determination module 240.

The starting module 210 is configured to start a pure electric mode and obtain an operation parameter of a target device of the current vehicle if the initial electric quantity of the current vehicle is greater than or equal to a first threshold;

a first determining module 220, configured to determine a phase time power consumption deviation average value in a pure electric operation mode according to an operation parameter of the target device;

a second determining module 230, configured to start a hybrid operating mode when the pure electric operating time reaches a preset pure electric operating time, and determine a standard deviation of phase time power consumption in the hybrid operating mode according to the operating parameter of the target device and the average value of the phase time power consumption deviations;

and a third determining module 240, configured to determine the target generated power of the range extender according to the standard deviation of the phase time power consumption.

Optionally, the first determining module is specifically configured to:

acquiring the rotating speed of a hydraulic motor in a pure electric mode;

Optionally, the first determining module is specifically configured to:

Optionally, the second determining module is specifically configured to:

acquiring the rotating speed of a hydraulic motor in a mixed operation mode;

Optionally, the third determining module is specifically configured to:

The product can execute the method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.

Example III

Fig. 3 is a schematic structural diagram of an electronic device according to a third embodiment of the present invention. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. Electronic equipment may also represent various forms of mobile devices, such as personal digital processing, cellular telephones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.

As shown in fig. 3, the electronic device 10 includes at least one processor 11, and a memory, such as a Read Only Memory (ROM) 12, a Random Access Memory (RAM) 13, etc., communicatively connected to the at least one processor 11, in which the memory stores a computer program executable by the at least one processor, and the processor 11 may perform various appropriate actions and processes according to the computer program stored in the Read Only Memory (ROM) 12 or the computer program loaded from the storage unit 18 into the Random Access Memory (RAM) 13. In the RAM13, various programs and data required for the operation of the electronic device 10 may also be stored. The processor 11, the ROM12 and the RAM13 are connected to each other via a bus 14. An input/output (I/O) interface 15 is also connected to bus 14.

Various components in the electronic device 10 are connected to the I/O interface 15, including: an input unit 16 such as a keyboard, a mouse, etc.; an output unit 17 such as various types of displays, speakers, and the like; a storage unit 18 such as a magnetic disk, an optical disk, or the like; and a communication unit 19 such as a network card, modem, wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.

The processor 11 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 11 performs the respective methods and processes described above, such as the hybrid construction machine generation power determination method.

In some embodiments, the hybrid work machine generated power determination method may be implemented as a computer program tangibly embodied on a computer-readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 10 via the ROM12 and/or the communication unit 19. When the computer program is loaded into the RAM13 and executed by the processor 11, one or more steps of the hybrid construction machine electric power generation amount determination method described above may be performed. Alternatively, in other embodiments, processor 11 may be configured to perform the hybrid work machine generated power determination method in any other suitable manner (e.g., by means of firmware).

Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.

A computer program for carrying out methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be implemented. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.

In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.

The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.

The computing system may include clients and servers. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service are overcome.

It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.

The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. The method for determining the generated power of the hybrid engineering machine is characterized by comprising the following steps of:

2. The method of claim 1, wherein determining a phase-time power consumption bias mean in a pure operational mode based on the operational parameters of the target device comprises:

acquiring the rotating speed of a hydraulic motor in a pure electric mode;

3. The method of claim 2, wherein determining the overall unit power consumption for each unit time based on the first effective operating time, the first unit time, and the operating parameter of the target device comprises:

4. The method of claim 2, wherein when the pure electric time reaches a preset pure electric time, the hybrid operation mode is initiated, comprising:

5. The method of claim 1, wherein determining the standard deviation of phase-time power consumption in the hybrid operating mode from the operating parameter of the target device and the average of phase-time power consumption deviations comprises:

acquiring the rotating speed of a hydraulic motor in a mixed operation mode;

6. The method of claim 1, wherein determining the target generated power of the range extender based on the phase time power consumption standard deviation comprises:

7. The method of claim 6, wherein determining the target generated power of the range extender based on the first generation time and the phase time power consumption corresponding to the first generation time comprises:

8. The utility model provides a mixed engineering machine tool generated power determining device which characterized in that includes:

9. An electronic device, the electronic device comprising:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein,,

the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the hybrid engineering machine generated power determination method of any one of claims 1-7.

10. A computer readable storage medium storing computer instructions for causing a processor to implement the hybrid engineering machine generated power determination method of any one of claims 1-7 when executed.