Extended-range mine card dynamic energy consumption management method based on equivalent factors

Abstract

The invention relates to a method for managing dynamic energy consumption of an extended-range mine card based on equivalent factors. The method comprises the following steps: acquiring system state parameters, driving data, consumed electric quantity and fuel consumption of the extended-range mine card; determining a corresponding equivalent factor by taking the system state parameter as a current matching factor, and determining whether the range extender is turned on or turned off according to the equivalent factor; under the condition that the range extender is started, processing the driving data to obtain driving characteristics; adjusting the equivalent factor through a formula to obtain an adjusted equivalent factor; the consumed electric quantity and the fuel consumption are processed through the equivalent factors, equivalent fuel consumption is obtained, the equivalent factor corresponding to the minimum consumption in the equivalent fuel consumption is determined as the optimal equivalent factor, and the power output of the range extender is adjusted according to the optimal equivalent factor. According to the method, the energy utilization efficiency of the mine truck can be improved, the energy consumption is reduced, and a better solution is provided for efficient operation and sustainable development of the mine truck.

Description

Technical Field

[0001] The present invention relates to the field of vehicle energy management, and in particular to a dynamic energy consumption management method for an extended-range mining truck based on an equivalent factor. Background Art

[0002] In today's mining production field, with the continuous expansion of mining scale and the increasing intensity of operations, the energy consumption management problem of mining trucks, as an important means of transportation, has become increasingly prominent.

[0003] Traditional energy consumption management methods for mining trucks are often extensive and difficult to adapt to complex and changeable mining conditions, resulting in serious energy waste and high operating costs, while also causing great pressure on the environment.

[0004] Therefore, there is an urgent need for a method that can improve the energy utilization efficiency of mining trucks, reduce energy consumption, and provide a better solution for the efficient operation and sustainable development of mining trucks. Summary of the invention

[0005] Based on this, it is necessary to provide a dynamic energy consumption management method for extended-range mining trucks based on equivalent factors to address the above technical problems. This method has the advantages of improving the energy utilization efficiency of mining trucks, reducing energy consumption, and providing a better solution for the efficient operation and sustainable development of mining trucks.

[0006] In a first aspect, the present application provides a method for dynamic energy consumption management of an extended-range mining truck based on an equivalent factor, the method comprising:

[0007] Obtain system status parameters, driving data, power consumption within a preset time period, and fuel consumption within a preset time period of the extended-range mining truck;

[0008] Taking the system state parameter as the current matching factor, determining the corresponding equivalent factor, and determining whether to turn the range extender on or off according to the equivalent factor;

[0009] When the range extender is turned on, the driving data is processed to obtain the driving characteristics;

[0010] Based on the driving characteristics, the equivalent factor is adjusted through a formula to obtain an adjusted equivalent factor;

[0011] The consumed electricity and fuel consumption are processed using an equivalent factor to obtain an equivalent fuel consumption, and the equivalent factor corresponding to the minimum consumption in the equivalent fuel consumption is determined as the optimal equivalent factor, and the power output of the range extender is adjusted according to the optimal equivalent factor.

[0012] Furthermore, the system state parameters include vehicle speed, vehicle acceleration and preset system state parameters. The system state parameters are used as current matching factors to determine corresponding equivalent factors, including:

[0013] The vehicle demand P is calculated based on the vehicle speed, vehicle acceleration and preset system parameters. veh ;

[0014] Based on vehicle demand P veh , use the formula to calculate and confirm the corresponding equivalent factor, the formula is expressed as:

[0015]

[0016] Among them, S dis represents the fixed equivalence factor, P veh Represents the vehicle's required power, η mot and η isg Respectively represent the efficiency of the drive motor and ISG motor, η eng Indicates the efficiency of the engine, P bat Indicates the power battery output power, H LHV Indicates the lower heating value of the engine fuel, P RE Indicates the power generation capacity of the range extender.

[0017] Furthermore, the corresponding equivalent factors are calculated using the formula, including:

[0018] Based on the corresponding equivalent factors, the corresponding equivalent factors are adjusted in real time according to the following formula:

[0019]

[0020] Among them, s(t) represents the equivalent factor at time t, s0 represents the initial equivalent factor, K p and K i Represent the coefficients of the proportional term and the integral term, T s represents the sampling time, SOC(t) represents the SOC at time t, and SOC target Indicates the target SOC.

[0021] Furthermore, the system state parameter includes the state of charge SOC of the driving battery. The system state parameter is used as the current matching factor to determine the corresponding equivalent factor, and the range extender is turned on or off according to the equivalent factor, including:

[0022] Based on the state of charge SOC, the current value of the equivalent factor is obtained;

[0023] When the current value is greater than the preset shutdown threshold, the range extender is shut down;

[0024] When the current value is less than the preset start-up threshold, the range extender is turned on and the range extender outputs a constant power;

[0025] When the current value is less than the preset closing threshold and greater than the preset opening threshold, the range extender is kept in the start / stop state of the previous moment.

[0026] Furthermore, the driving data includes acceleration and time variation. When the range extender is turned on, the driving data is processed to obtain driving characteristics, including:

[0027] The driving data is processed by the formula to obtain the driving characteristics, where the formula is as follows:

[0028]

[0029]

[0030]

[0031]

[0032] Among them, J is the impact degree, Δa is the acceleration, Δt is the time change, a std is the standard deviation of acceleration, t is the working time of the mining truck, a i is the acceleration of the mining card at time i, a avg is the average acceleration in the mining truck working condition, and ε represents the driving characteristics.

[0033] Furthermore, based on the driving characteristics, the equivalent factor is adjusted by a formula to obtain an adjusted equivalent factor, including:

[0034] The equivalence factor is adjusted by the formula, where the formula is as follows:

[0035]

[0036] ξ[(k+1)T]=W SOC ε

[0037]

[0038] Among them, s k+1 represents the value of the equivalent factor of the k+1th time, s k represents the k-th equivalent factor value, W SOC represents the equivalent factor correction coefficient, represents the absolute value of the difference between the battery SOC value at time T and the reference value, ξ[(k+1)T] represents the influence of driving characteristics on the equivalent factor, is the SOC value at the initial moment, S SOC-t is the SOC value at the current moment, and ε represents the driving characteristics.

[0039] Furthermore, the consumed electricity and fuel consumption are processed using equivalent factors to obtain equivalent fuel consumption, including:

[0040] Based on the equivalent factor, the consumed electricity is processed equivalently to obtain the corresponding fuel consumption;

[0041] The corresponding fuel consumption and fuel consumption are processed by the formula to obtain the equivalent fuel consumption, where the formula is as follows:

[0042]

[0043] in, Indicates equivalent fuel consumption, represents fuel consumption, s represents the equivalent factor, P bat Indicates the power battery output power, H LHV Indicates the lower heating value of the engine fuel.

[0044] Furthermore, the power output of the range extender is adjusted according to the optimal equivalent factor, including:

[0045] Get the current equivalent factor;

[0046] The current equivalent factor is judged to obtain a judgment result, wherein the judgment result includes that the current equivalent factor is greater than the optimal equivalent factor, the current equivalent factor is less than the optimal equivalent factor, and the current equivalent factor is equal to the optimal equivalent factor;

[0047] When the judgment result is that the current equivalent factor is greater than the optimal equivalent factor, the power output of the range extender is adjusted to 80% to 100% of the maximum power;

[0048] When the judgment result is that the current equivalent factor is less than the optimal equivalent factor, the power output of the range extender is adjusted to 20% to 30% of the maximum power.

[0049] In a second aspect, a device for dynamic energy consumption management of an extended-range mining truck based on an equivalent factor is provided, comprising:

[0050] A data acquisition module, used to obtain system status parameters, driving data, power consumption within a preset time period, and fuel consumption within a preset time period of the extended-range mining truck;

[0051] A data processing module is used to use the system state parameter as the current matching factor, determine the corresponding equivalent factor, and determine whether to turn the range extender on or off according to the equivalent factor;

[0052] A driving identification module is used to process driving data to obtain driving characteristics when the range extender is turned on;

[0053] An equivalent factor adjustment module, used for adjusting the equivalent factor through a formula based on driving characteristics to obtain an adjusted equivalent factor;

[0054] The power adjustment module is used to process the consumed electricity and fuel consumption using an equivalent factor to obtain an equivalent fuel consumption, and determine the equivalent factor corresponding to the minimum consumption in the equivalent fuel consumption as the optimal equivalent factor, and adjust the power output of the range extender according to the optimal equivalent factor.

[0055] In a third aspect, a computer device is provided, comprising a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of a method for dynamic energy consumption management of an extended-range mining truck based on an equivalent factor as claimed in any one of claims 1 to 8 are implemented.

[0056] The technical solution provided by the present application includes the following technical effects: by providing a dynamic energy consumption management method for an extended-range mining truck based on an equivalent factor, the method includes: obtaining system state parameters, driving data, power consumed within a preset time period, and fuel consumption within a preset time period of the extended-range mining truck; using the system state parameters as the current matching factors, determining the corresponding equivalent factors, and determining whether the range extender is turned on or off according to the equivalent factors; when the range extender is turned on, processing the driving data to obtain driving characteristics; based on the driving characteristics, adjusting the equivalent factors through a formula to obtain an adjusted equivalent factor; using the equivalent factors to process the consumed power and fuel consumption to obtain an equivalent fuel consumption, and determining the equivalent factor corresponding to the minimum consumption in the equivalent fuel consumption as the optimal equivalent factor, and adjusting the power output of the range extender according to the optimal equivalent factor, so as to achieve the purpose of improving the energy utilization efficiency of mining trucks, reducing energy consumption, and providing a better solution for the efficient operation and sustainable development of mining trucks.

[0057] For better understanding and implementation, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0059] Figure 1 It is a flow chart of a dynamic energy consumption management method of an extended-range mining truck based on an equivalent factor in one embodiment of the present invention;

[0060] Figure 2The present invention is a structural diagram of a dynamic energy consumption management device for an extended-range mining truck based on an equivalent factor in one embodiment of the present invention. DETAILED DESCRIPTION

[0061] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the application, so the present application is not limited by the specific embodiments disclosed below.

[0062] As a new type of mining transport vehicle, the extended-range mining truck combines the advantages of pure electric mining trucks and traditional fuel mining trucks. It has the characteristics of energy saving and emission reduction, long cruising range, etc., and provides a new way to solve the energy consumption problem of mining trucks. However, to give full play to the advantages of extended-range mining trucks and achieve efficient energy consumption management, more precise and dynamic control strategies are needed.

[0063] The equivalent factor, a key indicator that can comprehensively reflect the operating status and energy consumption characteristics of mining trucks, came into being in this context. It converts complex operating information into a representative value by real-time monitoring and analysis of multiple factors in the operating parameters of mining trucks. Based on the equivalent factor, the energy consumption demand and energy utilization rate of mining trucks under different working conditions can be accurately evaluated, thus providing a basis for reasonable energy management strategies.

[0064] First, as Figure 1 As shown, in one embodiment of the present application, a dynamic energy consumption management method for an extended-range mining truck based on an equivalent factor is provided, the method comprising:

[0065] S101: Obtaining system status parameters, driving data, power consumption within a preset time period, and fuel consumption within a preset time period of the extended-range mining truck;

[0066] S102: Using the system state parameter as the current matching factor, determining a corresponding equivalent factor, and determining whether to turn the range extender on or off according to the equivalent factor;

[0067] S103: When the range extender is turned on, the driving data is processed to obtain driving characteristics;

[0068] S104: Based on the driving characteristics, the equivalent factor is adjusted by a formula to obtain an adjusted equivalent factor;

[0069] S105: Using the equivalent factor to process the consumed electricity and fuel consumption to obtain the equivalent fuel consumption, and determining the equivalent factor corresponding to the minimum consumption in the equivalent fuel consumption as the optimal equivalent factor, and adjusting the power output of the range extender according to the optimal equivalent factor.

[0070] Specifically, system status parameters also include road slope and motor power demand; the equivalent factor is a parameter used to measure the energy consumption equivalent performance of different energy sources during the operation of mining trucks; and the range extender provides additional power when the mining truck faces heavy-load transportation tasks or complex road conditions, ensuring the smooth operation of the mining truck and overcoming various resistances; the range extender can extend the cruising range of the mining truck, ensure its long-term continuous operation, avoid frequent shutdowns and charging due to battery power limitations, and expand the operating range; in terms of energy management, it can balance the battery load, dynamically adjust the output power according to the battery power status, extend the battery life and improve energy utilization, and can also make comprehensive use of different energy sources; in addition, the range extender serves as an emergency backup power supply, ensuring the safe return of the mining truck or the continuation of emergency tasks when the battery fails or runs out of power, while providing a stable power supply for the electrical system to ensure the normal operation of various equipment and control systems, enhance the reliability of the mining truck system, reduce downtime losses and safety accident risks, and is of great significance to the efficient and stable operation of mining trucks.

[0071] A dynamic energy consumption management method for an extended-range mining truck based on an equivalent factor is provided, the method comprising: obtaining system state parameters, driving data, power consumption within a preset time period, and fuel consumption within a preset time period of the extended-range mining truck; using the system state parameters as current matching factors, determining corresponding equivalent factors, and determining whether to turn on or off the range extender according to the equivalent factors; when the range extender is turned on, processing the driving data to obtain driving characteristics; based on the driving characteristics, adjusting the equivalent factors through a formula to obtain an adjusted equivalent factor; using the equivalent factors to process the consumed power and fuel consumption to obtain equivalent fuel consumption, and determining the equivalent factor corresponding to the minimum consumption in the equivalent fuel consumption as the optimal equivalent factor, and adjusting the power output of the range extender according to the optimal equivalent factor, so as to achieve the purpose of improving the energy utilization efficiency of mining trucks, reducing energy consumption, and providing a better solution for the efficient operation and sustainable development of mining trucks.

[0072] Furthermore, the system state parameters include vehicle speed, vehicle acceleration and preset system state parameters. The system state parameters are used as current matching factors to determine corresponding equivalent factors, including:

[0073] (1) Calculate the vehicle demand P based on vehicle speed, vehicle acceleration and preset system parameters veh ;

[0074] (2) Based on vehicle demand Pveh , use the formula to calculate and confirm the corresponding equivalent factor, the formula is expressed as:

[0075]

[0076] Among them, S dis represents the fixed equivalence factor, P veh Represents the vehicle's required power, η mot and η isg Respectively represent the efficiency of the drive motor and ISG motor, η eng Indicates the efficiency of the engine, P bat Indicates the power battery output power, H LHV Indicates the lower heating value of the engine fuel, P RE Indicates the power generation capacity of the range extender.

[0077] Specifically, the premise of using the above formula is that the extended-range mining truck is in a driving state, that is, the required power is greater than 0, and the electricity consumption cost of the mining truck is the same as the oil consumption cost; for the relevant components of the extended-range mining truck, according to the principle of conservation of energy, the vehicle required power P is obtained. veh , use the following formula to calculate the vehicle demand P veh :

[0078] P veh =P mot +P lds =P RE +P bat

[0079] When P veh When P > 0, it means that the mining truck is consuming electricity while driving, otherwise it is recovering energy. mot When P > 0, it means that the driving battery of the mining truck is in electric mode, otherwise it is in power generation mode. RE When P > 0, it means that the range extender of the mining truck is in the power generation state, otherwise it is in the power consumption state. bat When it is >0, it means the battery of the mining card is in a discharging state, otherwise it is in a charging state.

[0080] Furthermore, the corresponding equivalent factors are calculated using the formula, including:

[0081] Based on the corresponding equivalent factors, the corresponding equivalent factors are adjusted in real time according to the following formula:

[0082]

[0083] Among them, s(t) represents the equivalent factor at time t, s0 represents the initial equivalent factor, K p and K i Represent the coefficients of proportional term and integral term respectively, Ts represents the sampling time, SOC(t) represents the SOC at time t, and SOC target Indicates the target SOC.

[0084] Specifically, in the energy management strategy, the state of charge (SOC) of the driving battery is usually the decision parameter for starting and stopping the range extender. When the SOC is high, the range extender is turned off and the battery provides energy; when the SOC drops to less than the preset start-up threshold, the range extender is turned on and outputs constant power, and the excess is charged to the battery, and the insufficient part is supplemented by battery discharge; when the SOC rises to greater than the preset shutdown threshold, the range extender is turned off.

[0085] Furthermore, the system state parameter includes the state of charge SOC of the driving battery. The system state parameter is used as the current matching factor to determine the corresponding equivalent factor, and the range extender is turned on or off according to the equivalent factor, including:

[0086] (1) Based on the state of charge SOC, obtain the current value of the equivalent factor;

[0087] (2) When the current value is greater than the preset shutdown threshold, the range extender is shut down;

[0088] (3) When the current value is less than the preset start-up threshold, the range extender is turned on and the range extender outputs a constant power;

[0089] (4) When the current value is less than the preset closing threshold and greater than the preset opening threshold, the range extender is kept in the start / stop state at the previous moment.

[0090] Specifically, based on the state of charge SOC of the driving battery, the current value of the equivalent factor is obtained, wherein the state of charge SOC of the driving battery is usually a decisive parameter for starting and stopping the range extender, and the preset closing threshold and the preset opening threshold can be modified by the user according to the situation. This embodiment takes the preset closing threshold of 40% and the preset opening threshold of 30% as an example.

[0091] Furthermore, the driving data includes acceleration and time variation. When the range extender is turned on, the driving data is processed to obtain driving characteristics, including:

[0092] The driving data is processed by the formula to obtain the driving characteristics, where the formula is as follows:

[0093]

[0094]

[0095]

[0096]

[0097] Among them, J is the impact degree, Δa is the acceleration, Δt is the time change, a std is the standard deviation of acceleration, t is the working time of the mining truck, a i is the acceleration of the mining card at time i, a avg is the average acceleration in the mining truck working condition, and ε represents the driving characteristics.

[0098] Specifically, the impact intensity J and the acceleration standard deviation a are used. std The driving characteristics of the mining truck are jointly judged. The impact degree J is used to measure the riding comfort of the mining truck, and the acceleration standard deviation a is used to measure the riding comfort of the mining truck. std To judge the driving status of the mining truck. In the traditional ECMS, the equivalent factor is a constant value under the entire cycle condition, which cannot adapt to the changes in working conditions and driving characteristics. Therefore, the corresponding equivalent factor is adjusted according to different driving characteristics to improve the adaptability of the vehicle energy control strategy to different driving characteristics. Among them, the driving characteristics mainly affect the required power of the mining truck by affecting the change of acceleration over a period of time.

[0099] Furthermore, based on the driving characteristics, the equivalent factor is adjusted by a formula to obtain an adjusted equivalent factor, including:

[0100] The equivalence factor is adjusted by the formula, where the formula is as follows:

[0101]

[0102] ξ[(k+1)T]=W SOC ε

[0103]

[0104] Among them, s k+1 represents the value of the equivalent factor of the k+1th time, s k represents the k-th equivalent factor value, W SOC represents the equivalent factor correction coefficient, represents the absolute value of the difference between the battery SOC value at time T and the reference value, ξ[(k+1)T] represents the influence of driving characteristics on the equivalent factor, is the SOC value at the initial moment, S SOC-t is the SOC value at the current moment, and ε represents the driving characteristics.

[0105] Specifically, the equivalent factor is adjusted by taking into account the impact of driving characteristics on the equivalent factor and combining the SOC feedback error of the driving battery to improve the economy of the vehicle while maintaining the SOC balance of the driving battery. In addition, when the SOC is small, the larger the equivalent factor s is, the more energy the mining truck consumes per unit time, and the mining truck needs more energy to drive; when the SOC is large, the equivalent factor needs to be reduced, so that the output power of the SOC is reduced.

[0106] Furthermore, the consumed electricity and fuel consumption are processed using equivalent factors to obtain equivalent fuel consumption, including:

[0107] (1) Based on the equivalent factor, the consumed electricity is processed equivalently to obtain the corresponding fuel consumption;

[0108] (2) The corresponding fuel consumption and fuel consumption are processed by the formula to obtain the equivalent fuel consumption, where the formula is as follows:

[0109]

[0110] in, Indicates equivalent fuel consumption, represents fuel consumption, s represents the equivalent factor, P bat Indicates the power battery output power, H LHV Indicates the lower heating value of the engine fuel.

[0111] Specifically, the equivalent factor is used to convert the electricity consumed by the mining truck into fuel consumption, and the fuel consumption of the engine is added to obtain the equivalent fuel consumption of the mining truck. The minimum equivalent fuel consumption is then identified from the obtained equivalent fuel consumption, and the equivalent factor corresponding to the minimum equivalent fuel consumption is identified as the optimal equivalent factor. Finally, the energy management of the mining truck is optimized based on the optimal equivalent factor.

[0112] Furthermore, the power output of the range extender is adjusted according to the optimal equivalent factor, including:

[0113] (1) Obtain the current equivalent factor;

[0114] (2) judging the current equivalent factor and obtaining a judgment result, wherein the judgment result includes that the current equivalent factor is greater than the optimal equivalent factor, the current equivalent factor is less than the optimal equivalent factor, and the current equivalent factor is equal to the optimal equivalent factor;

[0115] (3) When the judgment result is that the current equivalent factor is greater than the optimal equivalent factor, the power output of the range extender is adjusted to 80% to 100% of the maximum power;

[0116] (4) When the judgment result is that the current equivalent factor is less than the optimal equivalent factor, the power output of the range extender is adjusted to 20% to 30% of the maximum power.

[0117] Specifically, various sensors installed on the mining truck collect the mining truck's operating data in real time, including vehicle speed, acceleration, battery power, motor power, etc. Then, based on the pre-set algorithm and model, the equivalent factor of the mining truck at the current moment is calculated, which reflects the current operating status and energy consumption of the mining truck.

[0118] When the current equivalent factor is greater than the optimal equivalent factor, it means that the current operating state of the mining truck may be in a high energy demand or special working condition, such as the mining truck is performing heavy load acceleration climbing and other operations. At this time, adjusting the power output of the range extender to 80% to 100% of the maximum power can ensure sufficient power supply to meet the operating needs of the mining truck, and at the same time, it can also return the equivalent factor to the optimal range to improve energy efficiency. For example, when the mining truck is fully loaded and has to climb a steep hillside, the current equivalent factor will increase. At this time, increasing the power of the range extender can ensure that the mining truck climbs smoothly and avoids increased energy consumption or stagnation caused by insufficient power; when the current equivalent factor is less than the optimal equivalent factor, it indicates that the mining truck is currently running more energy-efficiently, or is in a state of low load and low energy demand, such as when the mining truck is driving unloaded on a flat road or driving downhill. At this time, adjusting the power output of the range extender to 20% to 30% of the maximum power can maintain the battery power level and prevent excessive discharge. On the other hand, it can reduce the fuel consumption of the range extender and further improve energy efficiency. For example, after completing a transportation mission, a mining truck returns empty-handed. At this time, the equivalent factor is low, and reducing the power of the range extender can save energy.

[0119] Second, as Figure 2 As shown, the present application also provides a device 200 for dynamic energy consumption management of an extended-range mining truck based on an equivalent factor, comprising:

[0120] The data acquisition module 201 is used to acquire system status parameters, driving data, power consumption within a preset time period, and fuel consumption within a preset time period of the extended-range mining truck;

[0121] The data processing module 202 is used to use the system state parameter as the current matching factor, determine the corresponding equivalent factor, and determine whether to turn on or off the range extender according to the equivalent factor;

[0122] The driving identification module 203 is used to process the driving data to obtain driving characteristics when the range extender is turned on;

[0123] An equivalent factor adjustment module 204, used to adjust the equivalent factor through a formula based on the driving characteristics to obtain an adjusted equivalent factor;

[0124] The power adjustment module 205 is used to process the consumed electricity and fuel consumption using an equivalent factor to obtain an equivalent fuel consumption, and determine the equivalent factor corresponding to the minimum consumption in the equivalent fuel consumption as the optimal equivalent factor, and adjust the power output of the range extender according to the optimal equivalent factor.

[0125] Furthermore, the system state parameters include vehicle speed, vehicle acceleration and preset system state parameters. The system state parameters are used as current matching factors to determine corresponding equivalent factors, including:

[0126] (1) Calculate the vehicle demand P based on vehicle speed, vehicle acceleration and preset system parameters veh ;

[0127] (2) Based on vehicle demand P veh , use the formula to calculate and confirm the corresponding equivalent factor, the formula is expressed as:

[0128]

[0129] Among them, S dis represents the fixed equivalence factor, P veh Represents the vehicle's required power, η mot and η isg Respectively represent the efficiency of the drive motor and ISG motor, η eng Indicates the efficiency of the engine, P bat Indicates the power battery output power, H LHV Indicates the lower heating value of the engine fuel, P RE Indicates the power generation capacity of the range extender.

[0130] Furthermore, the corresponding equivalent factors are calculated using the formula, including:

[0131] Based on the corresponding equivalent factors, the corresponding equivalent factors are adjusted in real time according to the following formula:

[0132]

[0133] Among them, s(t) represents the equivalent factor at time t, s0 represents the initial equivalent factor, K p and K i Represent the coefficients of proportional term and integral term respectively, T s represents the sampling time, SOC(t) represents the SOC at time t, and SOC target Indicates the target SOC.

[0134] Furthermore, the system state parameter includes the state of charge SOC of the driving battery. The system state parameter is used as the current matching factor to determine the corresponding equivalent factor, and the range extender is turned on or off according to the equivalent factor, including:

[0135] (1) Based on the state of charge SOC, obtain the current value of the equivalent factor;

[0136] (2) When the current value is greater than the preset shutdown threshold, the range extender is shut down;

[0137] (3) When the current value is less than the preset start-up threshold, the range extender is turned on and the range extender outputs a constant power;

[0138] (4) When the current value is less than the preset closing threshold and greater than the preset opening threshold, the range extender is kept in the start / stop state at the previous moment.

[0139] Furthermore, the driving data includes acceleration and time variation. When the range extender is turned on, the driving data is processed to obtain driving characteristics, including:

[0140] The driving data is processed by the formula to obtain the driving characteristics, where the formula is as follows:

[0141]

[0142]

[0143]

[0144]

[0145] Among them, J is the impact degree, Δa is the acceleration, Δt is the time change, a std is the standard deviation of acceleration, t is the working time of the mining truck, a i is the acceleration of the mining card at time i, a avg is the average acceleration in the mining truck working condition, and ε represents the driving characteristics.

[0146] Furthermore, based on the driving characteristics, the equivalent factor is adjusted by a formula to obtain an adjusted equivalent factor, including:

[0147] The equivalence factor is adjusted by the formula, where the formula is as follows:

[0148]

[0149] ξ[(k+1)T]=W SOC ε

[0150]

[0151] Among them, s k+1 represents the value of the equivalent factor of the k+1th time, s k represents the k-th equivalent factor value, W SOC represents the equivalent factor correction coefficient, represents the absolute value of the difference between the battery SOC value at time T and the reference value, ξ[(k+1)T] represents the influence of driving characteristics on the equivalent factor, is the SOC value at the initial moment, S SOC-t is the SOC value at the current moment, and ε represents the driving characteristics.

[0152] Furthermore, the consumed electricity and fuel consumption are processed using equivalent factors to obtain equivalent fuel consumption, including:

[0153] Based on the equivalent factor, the consumed electricity is processed equivalently to obtain the corresponding fuel consumption;

[0154] The corresponding fuel consumption and fuel consumption are processed by the formula to obtain the equivalent fuel consumption, where the formula is as follows:

[0155]

[0156] in, Indicates equivalent fuel consumption, represents fuel consumption, s represents the equivalent factor, P bat Indicates the power battery output power, H LHV Indicates the lower heating value of the engine fuel.

[0157] Furthermore, the power output of the range extender is adjusted according to the optimal equivalent factor, including:

[0158] (1) Obtain the current equivalent factor;

[0159] (2) judging the current equivalent factor and obtaining a judgment result, wherein the judgment result includes that the current equivalent factor is greater than the optimal equivalent factor, the current equivalent factor is less than the optimal equivalent factor, and the current equivalent factor is equal to the optimal equivalent factor;

[0160] (3) When the judgment result is that the current equivalent factor is greater than the optimal equivalent factor, the power output of the range extender is adjusted to 80% to 100% of the maximum power;

[0161] (4) When the judgment result is that the current equivalent factor is less than the optimal equivalent factor, the power output of the range extender is adjusted to 20% to 30% of the maximum power.

[0162] In a third aspect, a computer device is provided, comprising a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of a method for dynamic energy consumption management of an extended-range mining truck based on an equivalent factor as claimed in any one of claims 1 to 8 are implemented.

[0163] The technical solution provided in this application includes at least the following beneficial effects: it can improve the energy utilization efficiency of mining trucks, reduce energy consumption, and provide a better solution for the efficient operation and sustainable development of mining trucks.

[0164] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0165] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0166] For the device embodiments, since they basically correspond to the method embodiments, the relevant parts can refer to the partial description of the method embodiments. The device embodiments described above are only schematic, wherein the components described as separate parts may or may not be physically separated, and the parts displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the disclosed solution. A person of ordinary skill in the art can understand and implement it without paying any creative work.

[0167] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features is not contradictory, they should be considered to be within the scope of this specification.

[0168] The above-mentioned embodiments only express several implementation methods of the embodiments of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the embodiments of the present application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the embodiments of the present application, and these all belong to the protection scope of the embodiments of the present application.

Claims

1. A dynamic energy consumption management method for extended-range mining trucks based on equivalent factors, characterized in that: The method comprises: Obtain system status parameters, driving data, power consumption within a preset time period, and fuel consumption within a preset time period of the extended-range mining truck; Taking the system state parameter as the current matching factor, determining the corresponding equivalent factor, and determining whether to turn the range extender on or off according to the equivalent factor; When the range extender is turned on, the driving data is processed to obtain driving characteristics; Based on the driving characteristics, the equivalent factor is adjusted by a formula to obtain an adjusted equivalent factor; The consumed electricity and the fuel consumption are processed using the equivalent factor to obtain an equivalent fuel consumption, and the equivalent factor corresponding to the minimum consumption in the equivalent fuel consumption is determined as the optimal equivalent factor, and the power output of the range extender is adjusted according to the optimal equivalent factor.

2. The method for dynamic energy consumption management of an extended-range mining truck based on an equivalent factor according to claim 1, characterized in that: The system state parameters include vehicle speed, vehicle acceleration and preset system state parameters. The system state parameters are used as current matching factors to determine corresponding equivalent factors, including: The vehicle demand P is calculated based on the vehicle speed, the vehicle acceleration and the preset system parameters. veh ; Based on the vehicle demand P veh , the corresponding equivalent factor is determined by calculation using the formula, which is expressed as: Among them, S dis represents the fixed equivalence factor, P veh Represents the vehicle's required power, η mot and η isg Respectively represent the efficiency of the drive motor and ISG motor, η eng Indicates the efficiency of the engine, P bat Indicates the power battery output power, H LHV Indicates the lower heating value of the engine fuel, P RE Indicates the power generation capacity of the range extender.

3. The method for dynamic energy consumption management of an extended-range mining truck based on an equivalent factor according to claim 2 is characterized in that: The calculation using the formula to determine the corresponding equivalent factor also includes: Based on the corresponding equivalent factor, the corresponding equivalent factor is adjusted in real time according to the following formula: Among them, s(t) represents the equivalent factor at time t, s0 represents the initial equivalent factor, K p and K i Represent the coefficients of the proportional term and the integral term, T s represents the sampling time, SOC(t) represents the SOC at time t, and SOC target Indicates the target SOC.

4. The method for dynamic energy consumption management of an extended-range mining truck based on an equivalent factor according to claim 1, characterized in that: The system state parameter includes the state of charge SOC of the driving battery, and the system state parameter is used as the current matching factor to determine the corresponding equivalent factor, and the range extender is turned on or off according to the equivalent factor, including: Based on the state of charge SOC, obtaining a current value of the equivalent factor; When the current value is greater than a preset shutdown threshold, the range extender is shut down; When the current value is less than a preset start-up threshold, the range extender is turned on and the range extender outputs a constant power; When the current value is less than the preset closing threshold value and greater than the preset opening threshold value, the range extender is kept in the start / stop state at the previous moment.

5. The method for dynamic energy consumption management of extended-range mining trucks based on equivalent factors according to claim 1 is characterized in that: The driving data includes acceleration and time variation. When the range extender is turned on, the driving data is processed to obtain driving characteristics, including: The driving data is processed by a formula to obtain the driving characteristics, wherein the formula is as follows: Among them, J is the impact degree, Δa is the acceleration, Δt is the time change, a std is the standard deviation of acceleration, t is the working time of the mining truck, a i is the acceleration of the mining card at time i, a avg is the average acceleration in the mining truck working condition, and ε represents the driving characteristics.

6. The method for dynamic energy consumption management of an extended-range mining truck based on an equivalent factor according to claim 1, characterized in that: The equivalent factor is adjusted based on the driving characteristics by a formula to obtain an adjusted equivalent factor, including: The equivalent factor is adjusted by a formula, wherein the formula is as follows: ξ[(k+1)T]=W SOC e Among them, s k+1 represents the value of the equivalent factor of the k+1th time, s k represents the k-th equivalent factor value, W SOC represents the equivalent factor correction coefficient, represents the absolute value of the difference between the battery SOC value at time T and the reference value, ξ[(k+1)T] represents the influence of driving characteristics on the equivalent factor, is the SOC value at the initial moment, S SOC-t is the SOC value at the current moment, and ε represents the driving characteristics.

7. The method for dynamic energy consumption management of extended-range mining trucks based on equivalent factors according to claim 1 is characterized in that: The using the equivalent factor to process the consumed electricity and the fuel consumption to obtain equivalent fuel consumption includes: Based on the equivalent factor, equivalent processing is performed on the consumed electricity to obtain corresponding fuel consumption; The corresponding fuel consumption and the fuel consumption are processed by a formula to obtain an equivalent fuel consumption, wherein the formula is as follows: in, Indicates equivalent fuel consumption, represents fuel consumption, s represents the equivalent factor, P bat Indicates the power battery output power, H LHV Indicates the lower heating value of the engine fuel.

8. The method for dynamic energy consumption management of extended-range mining trucks based on equivalent factors according to claim 1 is characterized in that: The adjusting the power output of the range extender according to the optimal equivalent factor includes: Get the current equivalent factor; The current equivalent factor is judged to obtain a judgment result, wherein the judgment result includes that the current equivalent factor is greater than the optimal equivalent factor, the current equivalent factor is less than the optimal equivalent factor, and the current equivalent factor is equal to the optimal equivalent factor; When the judgment result is that the current equivalent factor is greater than the optimal equivalent factor, the power output of the range extender is adjusted to 80% to 100% of the maximum power; When the judgment result is that the current equivalent factor is less than the optimal equivalent factor, the power output of the range extender is adjusted to 20% to 30% of the maximum power.

9. A device for dynamic energy consumption management of extended-range mining trucks based on equivalent factors, characterized in that: The device comprises: A data acquisition module, used to obtain system status parameters, driving data, power consumption within a preset time period, and fuel consumption within a preset time period of the extended-range mining truck; A data processing module, used to use the system state parameter as a current matching factor, determine a corresponding equivalent factor, and determine whether to turn the range extender on or off according to the equivalent factor; A driving identification module, used for processing the driving data to obtain driving characteristics when the range extender is turned on; An equivalent factor adjustment module, used for adjusting the equivalent factor through a formula based on the driving characteristics to obtain an adjusted equivalent factor; A power adjustment module is used to process the consumed electricity and the fuel consumption using the equivalent factor to obtain an equivalent fuel consumption, and determine the equivalent factor corresponding to the minimum consumption in the equivalent fuel consumption as the optimal equivalent factor, and adjust the power output of the range extender according to the optimal equivalent factor.

10. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, the steps of a method for dynamic energy consumption management of an extended-range mining truck based on an equivalent factor as described in any one of claims 1 to 8 are implemented.

Images