Power control system and control method for overhead working truck

Abstract

The invention discloses a power control system and method for an overhead working truck, and belongs to the technical field of engineering machinery. Comprising a power output module, an execution unit and a control module. The multiple power output modules independently drive the multiple execution units so as to drive the hydraulic system to act. A state acquisition module is arranged between the execution unit and the control module and is used for acquiring state parameters of the execution unit and feeding back the state parameters to the control module; the control module evaluates the execution units according to the state parameters and determines a target execution unit from at least one execution unit; the invention discloses a power source of a small overhead working truck, which is realized by adopting an electric control mode, and the adaptation capability of the overhead working truck to various chassis is improved from the power taking of a chassis engine to the power provided by a motor.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engineering machinery, and in particular to a power control system and control method for an aerial work platform. BACKGROUND

[0002] Aerial work platforms are usually sold in the form of a whole vehicle, and the power source is usually obtained from the chassis engine. This power supply mode is highly dependent on the chassis. Although there are matching chassis on the domestic market, some chassis on the international market cannot provide power. How to meet the construction requirements of the product without relying on the chassis power and adapt to more national working conditions has become a problem to be solved for product export. The existing single motor scheme cannot realize long-time uninterrupted construction and is only suitable for vehicle backup power source scenes. SUMMARY

[0003] The purpose of the present application is to provide a power control system and control method for an aerial work platform, which realizes the transition of the power source of a small aerial vehicle from the chassis engine to the motor, and improves the adaptation ability of the aerial work platform to various chassis.

[0004] To achieve the above-mentioned purpose, the present application is realized by adopting the following technical scheme: In a first aspect, the present application provides a power control system for an aerial work platform, comprising a plurality of execution units and a control module; Each of the execution units is correspondingly configured with a power output module, which is used to drive the execution unit to provide hydraulic power for the hydraulic system of the aerial work platform; A state acquisition module is arranged between the execution unit and the control module, which is used to acquire the state parameters of the execution unit and feed back to the control module; The control module evaluates the execution unit according to the state parameters, and determines at least one target execution unit from each of the execution units according to the evaluation result; The control module comprises a voltage comparison unit, which is used to compare the output voltage of the power output module of the target execution unit with a preset threshold value, and select to start or cut off the target execution unit according to the comparison result.

[0005] By configuring a plurality of execution units, combining real-time voltage monitoring of the control module and acquisition of state parameters, in the system starting stage, the target execution unit to be started is accurately selected by evaluating the state parameters of each execution unit, and the voltage threshold comparison mechanism is used to prevent equipment damage caused by low-voltage starting, thereby effectively solving the technical problem of power supply system considering starting safety and equipment reliability under complex working conditions.

[0006] Further, the control module is further configured with an emergency instruction processing unit, configured to send an emergency instruction to the voltage comparison unit, and the control module is further configured to directly control the target execution unit to start when the voltage comparison unit receives the emergency instruction.

[0007] The emergency instruction processing unit can break through the voltage limit to force start in an emergency, improving the emergency response capability of the system.

[0008] Further, the state parameters include at least one of: a temperature signal parameter, configured to compare and select the target execution unit based on the temperature of the execution unit; a cumulative working time parameter, configured to compare and select the target execution unit based on the cumulative working time of the execution unit.

[0009] By selecting the temperature signal and the cumulative working time as the key state parameters, the control module can evaluate the health state and working load of the execution unit, so as to preferentially select the execution unit with appropriate temperature or longer standby time as the starting target among multiple execution units, effectively solving the problems of device reliability decline and service life shortening caused by starting due to overheating or excessive wear of a single execution unit, and enhancing the advantages of load balancing and proactive preventive maintenance of the dual-motor power system.

[0010] Further, the execution unit is provided with two, i.e., a first execution unit and a second execution unit; When the target execution unit is selected based on the temperature signal parameter: if the temperature signals of the first execution unit and the second execution unit are different, the control module selects the execution unit with lower temperature signal as the target execution unit; if the temperature signals of the first execution unit and the second execution unit are the same, the control module selects the first execution unit as the target execution unit.

[0011] By setting clear temperature selection rules, the control module can quickly and accurately select among multiple execution units, solving the problem of low efficiency caused by manual intervention to determine the starting object, and achieving the effects of reducing the thermal load of the device, prolonging the service life of the execution unit, and improving the decision-making efficiency of the power system.

[0012] Further, the execution unit is provided with two, i.e., a first execution unit and a second execution unit; When the target execution unit is selected based on the cumulative working time parameter: If the cumulative working time of the first execution unit and the second execution unit is different, the control module selects the execution unit with the longest cumulative working time and not exceeding the preset time threshold as the target execution unit; wherein the execution unit with the cumulative working time exceeding the preset time threshold is automatically cleared and re-included in the selection range; If the cumulative working time of the first execution unit and the second execution unit is the same, the control module selects the first execution unit as the target execution unit.

[0013] Through the cumulative working time selection mechanism, the phenomenon of uneven load, overwork or idling of the first execution unit and the second execution unit is avoided, the dynamic control of the working state of each execution unit is realized, the threshold zero is prevented to protect the stability of work, and at the same time, the same time length priority rule is set in the selection to ensure the certainty of the selection result.

[0014] Further, the execution unit is a motor pump; the power output module is a storage battery, the output is a direct current voltage signal, and the rated output voltage is 12V or 24V.

[0015] The selection of 12V / 24V rated voltage takes into account the balance demand of small equipment for power output and energy consumption control, can adapt to motor units with different load power, and improves the system configuration flexibility.

[0016] In a second aspect, the application further provides a control method based on the high-altitude operation vehicle power control system, the control method comprising the following steps: The control module obtains the state parameters of each execution unit; The control module evaluates the execution unit according to the state parameters, and determines at least one target execution unit from each execution unit according to the evaluation result; The control module compares the output voltage of the power output module of the target execution unit with the preset threshold, and selects to start or cut off the target execution unit according to the comparison result.

[0017] Through the cooperation design of multiple execution units, the output voltage of each power output module and the working state of each execution unit are monitored in real time, the target starting object is selected according to the set rule, and under the action of the control module with the emergency fault tolerance mechanism, a high-reliability power starting system is constructed, which effectively improves the power supply continuity, starting stability and fault tolerance capability.

[0018] Further, the method further comprises: the control module directly controls the target execution unit to start in response to the voltage comparison unit receiving an emergency instruction.

[0019] Further, the state parameters include temperature signal parameters; The control module evaluates the execution units according to the state parameters, and determines at least one target execution unit from each execution unit according to the evaluation result, comprising: Arranging the temperature signals of each execution unit in ascending order, and selecting the execution unit corresponding to the minimum value as the target execution unit; When the temperature signals of each execution unit are the same, selecting a pre-designated execution unit as the target execution unit.

[0020] Further, the state parameters include an accumulated working time parameter; The control module evaluates the execution units according to the state parameters, and determines at least one target execution unit from each execution unit according to the evaluation result, comprising: Arranging the accumulated working time of each execution unit in descending order, and selecting the execution unit with the maximum value and not exceeding the preset threshold as the target execution unit; When the accumulated working time of each execution unit is the same, selecting a pre-designated execution unit as the target execution unit.

[0021] By selecting the execution unit with the lowest temperature signal in ascending order of the real-time temperature signal of the execution unit, the power supply system is dynamically managed, the load distribution of the high-temperature execution unit is reduced by preferentially enabling the low-temperature execution unit, thereby reducing the hidden danger of overall system temperature rise. By selecting the execution unit with the longest accumulated working time but not exceeding the threshold, balanced use and life management of the power supply system can be achieved, and the problems of contact oxidation or capacitor aging caused by long-term idling of individual execution units can be avoided. When all execution units are close to the threshold, the pre-set execution unit can ensure stable output under complex working conditions, significantly improving the consistency of the power supply system operation.

[0022] Compared with the prior art, the high-altitude operation vehicle power control system and control method in the application has the following advantages: 1、The execution unit configured with a power output module is controlled by the control module under the regulation and control of the preset rule, and the execution unit with a qualified working state is intelligently selected to start working, realizing automatic rotation and dynamic distribution of the working execution unit and the standby execution unit in the system, thereby dispersing the working load from a single continuously running component to multiple components to bear at different times, effectively overcoming the technical problems of easy fatigue and easy overheating of a single component, and introducing a real-time monitoring and protection mechanism based on the output voltage of the power output module, ensuring that the system starts only within a safe power range, effectively preventing under-voltage damage; significantly improving the continuous working ability and operating life of the entire system; 2、The emergency instruction strengthening system can force start beyond the normal limit in an emergency, thereby providing fault tolerance and emergency response capability while ensuring the stability of the system, and enhancing the reliability and adaptability of the entire scheme under complex working conditions; 3、The control module can accurately distinguish and preferentially select the execution unit that meets the required working state of the load, thereby realizing intelligent dynamic distribution of the system working load. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Figure 1 is a structure diagram of the high-altitude operation vehicle power control system monitoring execution unit temperature signal provided in some embodiments of the present application; Figure 2 is a method flowchart of Figure 1 ; Figure 3 is a structure diagram of the high-altitude operation vehicle power control system monitoring execution unit cumulative working time provided in some embodiments of the present application; Figure 4 is a method flowchart of Figure 3 .

[0025] Marked with a legend: 1, chassis charging line; 2, battery one; 3, battery two; 4, electric pump one; 5, digital-analog conversion module one; 6, temperature signal one; 7, start signal one; 8, electric pump two; 9, digital-analog conversion module two; 10, temperature signal two; 11, start signal two; 12, control module; 13, start signal three; 14, start signal four. DETAILED DESCRIPTION

[0026] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. The following description of at least one example embodiment is merely illustrative in nature and is in no way limiting on the present application and its applications or uses. Embodiments

[0027] With reference to Figures 1-4 The power control system of the aerial work platform comprises a plurality of execution units and a control module. Each execution unit is correspondingly configured with a power output module, which is used to drive the execution unit to provide hydraulic power for the hydraulic system of the aerial work platform. The power supply mode of the hydraulic system of the small aerial work platform is changed from an engine to an electric control, which not only solves the noise and emission pain points in urban construction, effectively prolongs the overall service life of the system, and significantly improves the reliability, dynamic adaptability and energy efficiency of the equipment.

[0028] A state acquisition module is arranged between the execution unit and the control module, which is used to acquire the state parameters of the execution unit and feed back to the control module. Based on the real-time data acquired by the state acquisition module, the system can accurately evaluate the health state and performance interval of each execution unit, thereby effectively avoiding sudden shutdown.

[0029] The control module evaluates the execution unit according to the state parameters, and determines at least one target execution unit from each execution unit according to the evaluation result. The control module comprises a voltage comparison unit, which is used to compare the output voltage of the power output module of the target execution unit with a preset threshold value, and select to start or cut off the target execution unit according to the comparison result.

[0030] In summary, the power control system of the aerial work platform in the embodiment adds execution units on the basis of the prior art, and correspondingly configures the same number of power output modules. The control module preferentially selects the target execution unit that meets the required working state of the working condition, and finally checks the output voltage of the power output module before issuing the start instruction. If voltage anomaly is detected, the start signal is immediately locked. Not only is the forced start of the execution unit in the harsh working condition of insufficient power supply avoided from the source, but also the performance degradation or irreversible damage of the equipment caused by under-voltage is effectively prevented. Moreover, a complete protection mechanism from state selection to motor protection is constructed, thereby significantly enhancing the comprehensive defense capability of the system when facing internal performance fluctuations and external power anomalies.

[0031] In some embodiments, the control module is further configured with an emergency instruction processing unit for sending an emergency instruction to the voltage comparison unit, and the control module is further configured to directly control the target execution unit to start when the voltage comparison unit receives the emergency instruction. It can be understood that when the device receives the emergency instruction, even if the system detects that the output voltage is too low, the preset voltage protection limit is skipped and the target execution unit is directly started. In this way, it can be ensured that the key function is not blocked in an emergency, and the response capability and operation reliability of the device under abnormal working conditions are improved.

[0032] In some embodiments, the state parameter comprises at least one of: a temperature signal parameter for comparing and screening the target execution unit based on the temperature of the execution unit; and an accumulated working time parameter for comparing and screening the target execution unit based on the accumulated working time of the execution unit. Optionally, the execution unit is provided with two, i.e. a first execution unit and a second execution unit; when the target execution unit is screened based on the temperature signal parameter: if the temperature signals of the first execution unit and the second execution unit are different, the control module selects the execution unit with the lower temperature signal as the target execution unit; and if the temperature signals of the first execution unit and the second execution unit are the same, the control module selects the first execution unit as the target execution unit.

[0033] It can be understood that, as Figure 1As shown, the chassis charging line 1 is provided by the chassis DC generator; the power output module includes battery one 2 and battery two 3, battery one 2 is the chassis battery; battery two 3 is the additional battery, which provides power supply for the equipment power system together; at this time, the chassis charging line 1 can charge two batteries at the same time, and the chassis battery one 2 and the battery two 3 can discharge externally at the same time; the execution unit includes electric pump one 4 and electric pump two 8, electric pump one 4 is combined by a DC motor and a hydraulic pump, and when working, the DC motor drives the hydraulic pump to rotate, providing a power source for the hydraulic system of the vehicle-mounted equipment; the digital-analog conversion module one 5 is connected to the temperature measuring line of the electric pump one 4, and outputs the current temperature signal one 6; the power system start signal one 7 is a 12V or 24V DC voltage signal, which is provided by the control end of the vehicle-mounted equipment, when the vehicle-mounted equipment needs to be started, the equipment outputs the start signal one 7 to the start end of the electric pump one 4, and the electric pump one 4 starts to work; electric pump two 8 is combined by a DC motor and a hydraulic pump, and when working, the DC motor drives the hydraulic pump to rotate, providing a power source for the hydraulic system of the vehicle-mounted equipment; the digital-analog conversion module two 9 is connected to the temperature measuring line of the electric pump two 8, and outputs the current temperature signal 10; the power system start signal two 11 is a 12V or 24V DC voltage signal, which is provided by the control end of the vehicle-mounted equipment, when the vehicle-mounted equipment needs to be started, the equipment outputs the start signal two 11 to the start end of the electric pump two 8, and the electric pump two 8 starts to work; the control module 12 is the control module of the power control system of the invention, which can be an embedded single-chip microcomputer control or a programmable controller control.

[0034] In some embodiments, the execution unit is provided with two, which are the first execution unit and the second execution unit; when the target execution unit is screened based on the cumulative working time parameter: if the cumulative working time of the first execution unit and the second execution unit is different, the control module selects the execution unit with the longest cumulative working time and not exceeding the preset time threshold as the target execution unit; wherein the execution unit whose cumulative working time exceeds the preset time threshold is automatically cleared and re-included in the screening range; if the cumulative working time of the first execution unit and the second execution unit is the same, the control module selects the first execution unit as the target execution unit.

[0035] In combination Figure 3It can be understood that the chassis charging line 1 is provided by the chassis DC generator; the power output module includes battery one 2, battery two 3, and the execution unit includes electric pump one 4 and electric pump two 8; the battery one 2 is a chassis battery, and the battery two 3 is an additional battery, which together provide power supply for the equipment power system; at this time, the chassis charging line 1 can simultaneously charge the two batteries, and the chassis battery one 2 and the battery two 3 can simultaneously discharge externally; the electric pump one 4 is combined by a DC motor and a hydraulic pump, and when working, the DC motor drives the hydraulic pump to rotate to provide a power source for the hydraulic system of the vehicle-mounted equipment; the power system start signal three 13 is a 12V or 24V DC voltage signal provided by the control end of the vehicle-mounted equipment, and when the vehicle-mounted equipment needs to be started, the equipment outputs the start signal three 13 to the start end of the electric pump one 4, and the electric pump one 4 starts to work; the electric pump two 8 is combined by a DC motor and a hydraulic pump, and when working, the DC motor drives the hydraulic pump to rotate to provide a power source for the hydraulic system of the vehicle-mounted equipment; the power system start signal four 14 is a 12V or 24V DC voltage signal provided by the control end of the vehicle-mounted equipment, and when the vehicle-mounted equipment needs to be started, the equipment outputs the start signal four 14 to the start end of the electric pump two 8, and the electric pump two 8 starts to work; the control module 12 is the control module of the power control system of the application, which can be an embedded single-chip microcomputer control or a programmable controller control.

[0036] In some embodiments, the execution unit is an electric motor pump, the power output module is a storage battery, the output is a DC voltage signal, and the rated output voltage is 12V or 24V. It can be understood that DC is used uniformly, and the rated output voltage of the power output module is specified at 12V or 24V common level design, so that the entire system can directly match the standard DC power supply and storage battery, not only facilitating the selection of field power supply and standby power supply, but also simplifying the line connection and subsequent maintenance, and improving the universality and reliability of the equipment. Embodiment

[0037] The embodiment provides a control method of a high-altitude operation vehicle power control system, which is realized based on the high-altitude operation vehicle power control system in the embodiment one, and the control method comprises the following steps: The control module acquires state parameters of each execution unit; The control module evaluates the execution unit according to the state parameters, and determines at least one target execution unit from each execution unit according to the evaluation result; The control module compares the output voltage of the power output module of the target execution unit with a preset threshold value, and selects to start or cut off the target execution unit according to the comparison result.

[0038] In summary, the control method of the aerial work platform power control system in the embodiment can effectively screen the target execution unit with a working state meeting the construction requirements by real-time monitoring and judging the state of each execution unit by the control module, and automatically identify the voltage abnormality of the power output module and block the start signal in the start stage, thereby ensuring the reliability and safety of the system power supply and avoiding the misoperation of the execution unit or equipment damage caused by the abnormality of the power output module.

[0039] In some embodiments, the method further comprises: the control module directly controlling the target execution unit to start in response to the voltage comparison unit receiving an emergency instruction. It can be understood that by skipping the voltage detection link in an emergency and directly starting the target execution unit, the efficiency and absolute priority of the system response in an emergency are ensured, thereby providing a strong guarantee for the safe implementation of the core function.

[0040] In some embodiments, the state parameters include temperature signal parameters; the control module evaluates the execution units according to the state parameters, and determines at least one target execution unit from the execution units according to the evaluation results, which comprises: arranging the execution units in ascending order according to the temperature signals, and selecting the execution unit corresponding to the minimum value as the target execution unit; when the temperature signals of the execution units are the same, selecting a pre-designated execution unit as the target execution unit.

[0041] It can be understood that after power-on initialization, the control module 12 collects the voltage signals of the chassis battery one 2 and the additional battery two 3, the temperature signal one 6 of the electric pump one 4, the start signal one 7 of the electric pump one 4, the temperature signal two 10 of the electric pump two 8, and the start signal two 11 of the electric pump two 8, and judges the current working state and temperature information of the electric pump one 4 and the electric pump two 8. When the control module 12 receives a vehicle action instruction, the control module 12 selects the electric pump with a lower temperature to perform work in combination with the data of the temperature signal one 6 and the temperature signal two 10. When the temperature signal one 6 and the temperature signal two 10 returned by the electric pump one 4 and the electric pump two 8 are the same, the electric pump one 4 is selected to perform work by default; the action instruction ends, and the control module 12 controls the electric pump to stop working. When the control module 12 detects that the voltage signals of the chassis battery one 2 and the additional battery two 3 are lower than a preset value, the electric pump one 4 and the electric pump two 8 are automatically prohibited to work, but when the operation instruction input by the customer contains an emergency instruction, the electric pump one 4 and the electric pump two 8 can work normally.

[0042] In some embodiments, the state parameter comprises a cumulative working time parameter; the control module evaluates the execution units according to the state parameter, and determines at least one target execution unit from the execution units according to the evaluation result, comprising: arranging the execution units in descending order according to the cumulative working time of each execution unit, selecting the execution unit with the maximum value and not exceeding the preset threshold as the target execution unit; when the cumulative working time of each execution unit is the same, selecting a pre-designated execution unit as the target execution unit.

[0043] It can be understood that after power-on initialization, the control module 12 collects the voltage signals of the chassis battery 2 and the additional battery 3, the starting signals 13 of the electric pump 1 4, and the starting signals 14 of the electric pump 2 8, and judges the current working state of the electric pump 1 4 and the electric pump 2 8. When the control module 12 receives a vehicle action instruction, the control module 12 selects the motor with the longest cumulative working time and the cumulative working time ≤ 5 minutes among the two motors in combination with the cumulative working time of the electric pump 1 4 and the electric pump 2 8; at the same time, the electric pump with the cumulative working time exceeding 5 minutes is subjected to a cumulative working time zero reset operation; when the cumulative working time of the electric pump 1 4 and the electric pump 2 8 is the same, the electric pump 1 4 is selected by default to perform work. When the action instruction ends, the control module 12 controls the electric pump to stop working. When the control module 12 detects that the voltage signals of the chassis battery 2 and the additional battery 3 are lower than the preset value, the electric pump 1 4 and the electric pump 2 8 are automatically prohibited to work, but when the operation instruction input by the customer contains an emergency instruction, the electric pump 1 4 and the electric pump 2 8 can work normally.

[0044] Working principle: When the aerial work vehicle issues instructions such as outrigger extension and retraction, arm amplitude change, and arm extension and retraction, the control module first performs logical judgment, detects the working state of the corresponding electric pump one 4 and electric pump two 8 according to the preset rules of the main battery one 2 and the additional battery two 3, and selects the electric pump that meets the current working condition; when the detection rule takes the temperature signal of the electric pump as the selection basis, if the temperature signals of the two electric pumps are different, the one with lower temperature is selected for starting, and if the temperature signals of the two electric pumps are the same, the default electric pump one 4 is selected for starting; when the detection rule takes the cumulative working time of the electric pump as the selection basis, if the cumulative working time of the two electric pumps is different, the one with longer cumulative working time and not exceeding the preset threshold is selected for starting, if the cumulative working time of the electric pump exceeds the preset threshold, it is cleared and then reselected, and if the cumulative working time of the two electric pumps is the same, the default electric pump one 4 is selected for starting; after the control module selects the target electric pump for starting, it judges whether the output voltage value is in the normal working interval through the real-time monitoring of the voltage signals of the battery one 2 and the battery two 3, and if it is in the low voltage state, the starting of the electric pump is interrupted or stopped; when the emergency instruction is started by the worker, the control module skips the voltage detection and directly sends the starting signal to the electric pump to complete the work; effectively avoiding the construction accidents caused by the system shutdown of the aerial work vehicle in emergency, significantly enhancing the reliability and continuity of the system operation.

[0045] The above only describes the preferred embodiments of the present application, and it should be noted that for ordinary skilled persons in the technical field, some improvements and modifications can be made without departing from the technical principles of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.

Claims

1. A power control system for an aerial work platform vehicle, characterized in that, It includes multiple execution units and control modules; Each of the aforementioned execution units is equipped with a corresponding power output module, which is used to drive the execution unit to provide hydraulic power to the hydraulic system of the aerial work vehicle; A status acquisition module is provided between the execution unit and the control module to collect the status parameters of the execution unit and feed them back to the control module; The control module evaluates the execution units according to the status parameters, and determines at least one target execution unit from the execution units based on the evaluation results; The control module includes a voltage comparison unit, which is used to compare the output voltage of the power output module of the target execution unit with the magnitude of a preset threshold, and select to start or cut off the target execution unit based on the comparison result.

2. The power control system for the aerial work platform according to claim 1, characterized in that, The control module is also equipped with an emergency command processing unit, which is used to send emergency commands to the voltage comparison unit. The control module is also used to directly control the target execution unit to start when the voltage comparison unit receives the emergency command.

3. The power control system for the aerial work platform according to claim 1, characterized in that, The state parameters include at least one of the following: Temperature signal parameters are used to compare and filter target execution units based on their temperature. The cumulative working time parameter is used to compare and filter target execution units based on their cumulative working time.

4. The power control system for the aerial work platform according to claim 3, characterized in that, The execution unit is provided in two parts, namely the first execution unit and the second execution unit; When filtering target execution units based on the temperature signal parameters: If the temperature signals of the first execution unit and the second execution unit are different, the control module selects the execution unit with the lower temperature signal as the target execution unit; If the temperature signals of the first execution unit and the second execution unit are the same, the control module selects the first execution unit as the target execution unit.

5. The power control system for the aerial work platform according to claim 3, characterized in that, The execution unit is provided in two parts, namely the first execution unit and the second execution unit; When filtering target execution units based on the cumulative working time parameter: If the cumulative working time of the first execution unit and the second execution unit are different, the control module selects the execution unit with the longest cumulative working time that does not exceed the preset working time threshold as the target execution unit; wherein, the execution unit whose cumulative working time exceeds the preset working time threshold is automatically cleared to zero and then included in the filtering range again. If the cumulative working time of the first execution unit and the second execution unit is the same, the control module selects the first execution unit as the target execution unit.

6. The power control system for the aerial work platform according to claim 1, characterized in that, The execution unit is a motor pump; the power output module is a battery, which outputs a DC voltage signal and has a rated output voltage of 12V or 24V.

7. A control method for a power control system of an aerial work platform vehicle based on any one of claims 1 to 6, characterized in that, The control method includes the following steps: The control module acquires the status parameters of each execution unit; The control module evaluates the execution units according to the status parameters, and determines at least one target execution unit from the execution units based on the evaluation results; The control module compares the output voltage of the power output module of the target execution unit with the magnitude of a preset threshold, and selects to start or cut off the target execution unit based on the comparison result.

8. The control method for the power control system of the aerial work platform vehicle according to claim 7, the method further includes: When the voltage comparison unit receives an emergency command, the control module directly controls the target execution unit to start.

9. The control method for the power control system of the aerial work platform vehicle according to claim 7, characterized in that, The status parameters include temperature signal parameters; The control module evaluates the execution units based on the status parameters, and determines at least one target execution unit from among the execution units based on the evaluation results, including: Arrange the temperature signals of each execution unit in ascending order, and select the execution unit corresponding to the minimum value as the target execution unit; When the temperature signals of all execution units are the same, the pre-specified execution unit is selected as the target execution unit.

10. The control method of the power control system of the aerial work platform vehicle according to claim 7, characterized in that, The status parameters include the cumulative working time parameter; The control module evaluates the execution units based on the status parameters, and determines at least one target execution unit from among the execution units based on the evaluation results, including: The execution units are sorted in descending order of their cumulative working time, and the execution unit with the maximum value that does not exceed the preset threshold is selected as the target execution unit. When the cumulative working time of each execution unit is the same, the pre-specified execution unit is selected as the target execution unit.

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