Method for controlling a hybrid powertrain of an aerial work platform and platform

Abstract

The application provides a control method and platform of a high-altitude operation platform hybrid power assembly, and belongs to the technical field of engineering machinery control. The control method of the high-altitude operation platform hybrid power assembly comprises the following steps: determining a high-altitude operation load parameter, and generating an engine preset load rate and a motor preset load rate based on the high-altitude operation load parameter; in an empty load state, starting the engine and the motor, detecting an initial voltage of a battery, comparing the initial voltage with a preset voltage, determining a voltage comparison result, and determining the preset voltage based on the motor preset load rate; if the initial voltage is not lower than the preset voltage, controlling the generator to be in a shutdown state; and if the initial voltage is lower than the preset voltage, controlling the generator to start to charge the battery. The control method of the high-altitude operation platform hybrid power assembly provided by the application combines an engine and an electric power system, realizes micro-mixing technology of a high-altitude operation platform assembly, improves fuel economy, and achieves the purpose of energy saving and emission reduction.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of engineering machinery control, and particularly relates to a control method of a hybrid power assembly of an aerial work platform and the platform. BACKGROUND

[0002] The aerial work platform is a mechanical equipment specially designed for working at a high place, such as construction, maintenance, installation and inspection.

[0003] In the related art, the aerial work platform is usually provided with only a traditional engine as a power source, and fuel consumption is large. In order to meet emission regulations, a corresponding aftertreatment device needs to be added for exhaust gas treatment, which increases the operation cost and is not conducive to energy saving and emission reduction. SUMMARY

[0004] In order to solve at least one aspect of the technical problems in the background art, the application provides a control method of a hybrid power assembly of an aerial work platform, which combines an engine and an electric power system, realizes micro-mixing technology of the aerial work platform assembly, improves fuel economy, and achieves the purpose of energy saving and emission reduction.

[0005] The second aspect embodiment of the application provides an aerial work platform.

[0006] The technical scheme adopted by the application is as follows:

[0007] The first aspect embodiment of the application provides a control method of a hybrid power assembly of an aerial work platform, which is suitable for a hybrid power assembly including an engine and a generator, and includes the following steps.

[0008] Determine an aerial work load parameter, and generate an engine preset load rate and a motor preset load rate based on the aerial work load parameter;

[0009] In an empty load state, start the engine and the motor, detect an initial voltage of the battery, compare the initial voltage with a preset voltage, and determine a voltage comparison result, wherein the preset voltage is determined based on the motor preset load rate, and the motor is suitable for providing power assistance for starting of the engine;

[0010] If the initial voltage is not lower than the preset voltage, control the generator to be in a shutdown state, and determine an aerial work operation mode based on the engine preset load rate and the motor preset load rate;

[0011] If the initial voltage is lower than the preset voltage, control the generator to start to charge the battery, and determine the aerial work operation mode based on the engine preset load rate and the motor preset load rate;

[0012] The high-altitude operation mode includes a single-engine working mode, an engine + motor working mode, and an overload standby mode.

[0013] According to the control method of the aerial work platform hybrid power assembly provided by the first aspect of the application, the micro-mixing technology of the power system is realized. Specifically, first, the aerial work load parameter is determined, which can be determined based on the weight or volume of the object to be lifted. After determining the aerial work load parameter, the system can distribute the load to the engine and the motor, and then generate the engine preset load rate and the motor preset load rate. When the aerial work platform is started under no load, the engine is started first. The engine can be a diesel engine or other types of heat engine, which is used to provide the main power source. At this time, the motor can be started synchronously to provide power assistance for the start of the engine, so as to reduce fuel consumption and exhaust emission. The battery is used as an auxiliary power source to store energy and provide it to the motor when needed. At the same time of starting the engine, the initial voltage of the vehicle-mounted battery is detected, and then the detected initial voltage of the battery is compared with the preset voltage. The preset voltage is set based on the motor preset load rate and the best working state of the battery under the current preset load rate and the working demand of the platform. If the initial voltage of the battery is not lower than the preset voltage, it means that the battery has sufficient power, so the generator remains in a stopped state to save energy. If the initial voltage of the battery is lower than the preset voltage, it means that the battery has insufficient power, so the generator needs to be started to charge the battery. Further, because the aerial work load parameter can be large or small, sometimes the engine alone can meet the work demand, sometimes the engine and the motor need to run simultaneously to meet the work demand, and sometimes the engine and the motor cannot meet the work demand even if they run simultaneously when the aerial work load parameter is too high. Therefore, in the application, whether the initial voltage of the battery is lower than the preset voltage or not, the aerial work operation mode can be determined based on the engine preset load rate and the motor preset load rate, i.e., the single-engine working mode, the engine + motor working mode, and the overload standby mode, to realize reasonable use of energy. In summary, the control method of the aerial work platform hybrid power assembly provided by the application helps to optimize energy use and avoid unnecessary energy waste, while ensuring the normal operation of the aerial work platform and sufficient power supply. In this way, the aerial work platform not only reduces dependence on fossil fuels and reduces operating costs, but also reduces the emission of greenhouse gases and other harmful substances, contributing to environmental protection. In addition, since the dependence on aftertreatment devices is reduced, the maintenance cost and overall operation cost of the aerial work platform are also reduced.

[0014] According to one embodiment of the application, if the initial voltage is not lower than the preset voltage, the generator is controlled to be in a stopped state, specifically:

[0015] shutting down the motor, running a single-engine operation mode, and detecting whether an actual load rate of the engine is higher than a preset load rate and whether an operating voltage of the battery is lower than the preset voltage;

[0016] If the actual load rate is not higher than the preset load rate and the operating voltage of the battery is lower than the preset voltage, the engine is controlled to operate and charge the battery.

[0017] According to one embodiment of the present application, if the initial voltage is not lower than the preset voltage, the generator is controlled to be in a shutdown state, specifically:

[0018] running an engine + motor operation mode, and detecting whether an operating voltage of the battery is lower than the preset voltage;

[0019] If the operating voltage of the battery is lower than the preset voltage, the operating speed of the aerial work platform is reduced.

[0020] According to one embodiment of the present application, if the initial voltage is not lower than the preset voltage, the generator is controlled to be in a shutdown state, and further comprising:

[0021] running an overload standby mode, and shutting down the engine and the motor;

[0022] releasing the shutdown state of the generator, so that the generator is started and charges the battery.

[0023] According to one embodiment of the present application, if the initial voltage is lower than the preset voltage, the generator is controlled to be started to charge the battery, specifically:

[0024] shutting down the motor, running a single-engine operation mode, and detecting whether an actual load rate of the engine is higher than a preset load rate and whether an operating voltage of the battery is lower than the preset voltage;

[0025] If the actual load rate is not higher than the preset load rate and the operating voltage of the battery is lower than the preset voltage, the engine is controlled to operate and charge the battery together with the generator.

[0026] According to one embodiment of the present application, if the initial voltage is lower than the preset voltage, the generator is controlled to be started to charge the battery, specifically:

[0027] running an engine + motor operation mode, and detecting whether an operating voltage of the battery is lower than the preset voltage;

[0028] If the operating voltage of the battery is lower than the preset voltage, the operating speed of the aerial work platform is reduced.

[0029] According to one embodiment of the present application, if the initial voltage is lower than the preset voltage, the control of starting the generator to charge the battery further comprises:

[0030] running the overload standby mode, and shutting down the engine and the motor.

[0031] According to one embodiment of the present application, the method further comprises:

[0032] before the work is completed, detecting whether the battery is fully charged;

[0033] if the battery is not fully charged, sending a charging indication to the user;

[0034] if the battery is fully charged, ending the work.

[0035] According to one embodiment of the present application, the preset load rate is 90%.

[0036] A second aspect embodiment of the present application provides a high-altitude work platform, comprising:

[0037] an engine, a motor, a generator and a processor, wherein the processor implements the control method of the high-altitude work platform hybrid power assembly according to any one of the first aspect embodiments when executing a program. BRIEF DESCRIPTION OF DRAWINGS

[0038] The accompanying drawings, which are included to provide a further understanding of the present application, constitute a part of the present application and illustrate the illustrative embodiments of the present application and their description serve to explain the present application, and do not constitute improper limitations on the present application. In the drawings:

[0039] Figure 1 a flowchart of the control method of the high-altitude work platform hybrid power assembly according to the embodiments of the present application. DETAILED DESCRIPTION

[0040] In order to more clearly explain the overall concept of the present application, the following will be described in detail with reference to the accompanying drawings.

[0041] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features in each embodiment can be combined with each other without conflict.

[0042] In addition, in the description of the present application, it should be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0043] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection, and can also be communication; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. In the description of the specification, the description referring to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0045] As Figure 1 shown, the first aspect embodiment of the present application provides a control method of a hybrid power assembly of a high-altitude operation platform, which is suitable for a hybrid power assembly including an engine and a generator, and includes:

[0046] Step 100, determining a high-altitude operation load parameter, and generating an engine preset load rate and a motor preset load rate based on the high-altitude operation load parameter.

[0047] Step 200, starting the engine and the motor in the empty load state, detecting the initial voltage of the battery, and comparing the initial voltage with the preset voltage to determine the voltage comparison result, wherein the preset voltage is determined based on the motor preset load rate, and the motor is adapted to provide power assistance for starting the engine.

[0048] Step 300, if the initial voltage is not lower than the preset voltage, control the generator to be in the shutdown state, and determine the aerial work running mode based on the engine preset load rate and the motor preset load rate.

[0049] Step 400, if the initial voltage is lower than the preset voltage, control the generator to start charging the battery, and determine the aerial work running mode based on the engine preset load rate and the motor preset load rate.

[0050] Among them, the aerial work running mode includes a single-engine working mode, an engine + motor working mode, and an overload standby mode.

[0051] In step 100, the aerial work platform has different load requirements in different working states, which will affect the working state of the engine and the motor. When determining the aerial work load parameters, the following key parameters usually need to be considered: platform load, which can specifically include the weight of the operator, tools and materials, etc.; lifting height, the required lifting force is different for different lifting heights of the platform; the extension length of the working arm, the longer the extension length, the greater the required driving force; the speed of platform movement, including the speed in the vertical and horizontal directions; working environment, such as terrain (flat or rugged), wind speed and other factors.

[0052] The engine preset load rate is set according to the typical working state of the engine on the aerial work platform. The preset load rate is usually set at a level that can ensure efficient operation of the engine and will not consume too much fuel. For example, the preset load rate can be set to 90%. Specifically, the engine preset load rate can be calculated by the following parameters: determine the maximum output power of the engine, which is the data provided by the engine manufacturer; calculate the average power demand in the typical working state, which is calculated based on the load parameters of the aerial work platform; determine the preset load rate of the engine, set the preset load rate according to the ratio between the average power demand in the typical working state and the maximum output power.

[0053] The motor preset load rate also needs to be determined according to the actual working conditions of the aerial work platform, which is usually closely related to the working state of the engine. In a hybrid system, the motor is mainly used to assist the engine, especially in situations where additional power is needed. Specifically, the motor preset load rate can be calculated by the following parameters: determine the maximum output power of the motor, which is the data provided by the motor manufacturer; calculate the average power demand in the motor-assisted working state, which is calculated based on the load parameters of the aerial work platform, especially when the engine load is high, the motor needs to provide additional power; determine the preset load rate of the motor, set the preset load rate according to the ratio between the average power demand in the motor-assisted working state and the maximum output power.

[0054] In step 200, the engine, which can be a diesel engine or a gasoline engine, is the main power source of the hybrid system. After the engine is started, the control system begins to monitor the status of the entire system, including the initial voltage of the battery. The initial voltage refers to the voltage when the aerial work platform is in the state of just starting but not working. The battery, as an auxiliary power source, plays a crucial role in the hybrid system, providing additional power to drive the motor when the engine alone cannot meet the load demand, achieving hybrid power output of engine + motor. When the engine is started under no-load, the motor can be started synchronously to provide power assistance for the start of the engine, reducing fuel consumption and exhaust emissions.

[0055] The threshold of the preset voltage is set based on the preset load rate of the motor and the health status of the battery under the current preset load rate, which represents the minimum voltage that the battery can effectively support the operation of the platform without external charging. The purpose is to ensure that the battery works in the best state, neither over-discharged nor over-charged.

[0056] In step 300, when the initial voltage of the battery is higher than or equal to the preset value, it indicates that the current power of the battery is sufficient to cope with the upcoming task, and there is no need to charge immediately. In this case, the control system will not start the generator, i.e. the generator remains in the shutdown state. The power generated by the engine will be completely used for the mechanical operation of the aerial work platform, rather than for charging the battery, which can improve the overall energy efficiency and fuel economy.

[0057] In this case, the aerial work operation mode can be further determined based on the preset load rate of the engine and the preset load rate of the motor, including single-engine operation mode, engine + motor operation mode, and overload standby mode.

[0058] In step 400, the initial voltage of the battery is lower than the preset voltage, and the battery cannot provide sufficient power to support the normal operation of the aerial work platform, and may even cause damage to the battery, so it needs to be charged. To ensure that the battery can quickly recover to above the preset voltage.

[0059] In this case, the aerial work operation mode can also be further determined based on the preset load rate of the engine and the preset load rate of the motor, including single-engine operation mode, engine + motor operation mode, and overload standby mode.

[0060] According to the control method of the aerial work platform hybrid power assembly provided in the first aspect of the present application, the micro-mixing technology of the power system is realized. Specifically, first, the aerial work load parameter is determined, which can be determined based on the weight or volume of the object to be lifted at present. After determining the aerial work load parameter, the system can distribute the load to the engine and the motor, and then the engine preset load rate and the motor preset load rate can be generated. When the aerial work platform is started under no load, the engine is started first. The engine can be a diesel engine or other types of heat engines, which is used to provide the main power source. At this time, the motor can be started synchronously to provide power assistance for the start of the engine, so as to reduce fuel consumption and exhaust emission. The battery is used as an auxiliary power source to store energy and provide it to the motor when needed. At the same time of starting the engine, the initial voltage of the on-board battery is detected, and then the detected initial voltage of the battery is compared with the preset voltage. The preset voltage is set based on the motor preset load rate and ensures the best working state of the battery under the current preset load rate and the working demand of the platform. If the initial voltage of the battery is not lower than the preset voltage, it means that the battery has sufficient power, so the generator remains in a stopped state to save energy. If the initial voltage of the battery is lower than the preset voltage, it means that the battery has insufficient power, so the generator needs to be started to charge the battery. Further, because the aerial work load parameter can be large or small, sometimes the engine alone can meet the work demand, sometimes the engine and the motor need to run simultaneously to meet the work demand, and sometimes the engine and the motor running simultaneously cannot meet the work demand when the aerial work load parameter is too high. Therefore, in the present application, whether the initial voltage of the battery is lower than the preset voltage or not, the aerial work running mode, i.e., the single-engine working mode, the engine + motor working mode and the overload standby mode, can be determined based on the engine preset load rate and the motor preset load rate, so as to realize the rational use of energy. In summary, the control method of the aerial work platform hybrid power assembly provided in the embodiments of the present application helps to optimize the use of energy and avoid unnecessary energy waste, while ensuring the normal operation of the aerial work platform and sufficient power supply. In this way, the aerial work platform not only reduces the dependence on fossil fuels and reduces operating costs, but also reduces the emission of greenhouse gases and other harmful substances, making a contribution to environmental protection. In addition, since the dependence on aftertreatment devices is reduced, the maintenance cost and the overall operation cost of the aerial work platform are also reduced.

[0061] In some embodiments of the present application, if the initial voltage is not lower than the preset voltage, the generator is controlled to be in a stopped state, specifically:

[0062] the motor is turned off, the single-engine working mode is run, and whether the actual load rate of the engine is higher than the preset load rate and whether the operating voltage of the battery is lower than the preset voltage are detected.

[0063] If the actual load rate is not higher than the preset load rate, and the operating voltage of the battery is lower than the preset voltage, the engine is controlled to work and the battery is charged.

[0064] The above method is applied to the scene where the engine can meet the working demand alone, wherein the load rate refers to the proportion of the engine under the current working condition relative to its maximum output power. The control system will continuously monitor the actual load rate of the engine to determine whether it exceeds the preset load rate threshold. The preset load rate is usually set at a level that can ensure efficient operation of the engine and will not excessively consume fuel.

[0065] When the battery voltage is sufficient, the control system will let the engine work alone, which means that the engine will bear all the power demand, and the motor or generator will temporarily not participate in the work. The engine working alone can more directly convert fuel into power, reducing the loss of energy conversion. Even when the engine works alone, the system will still monitor the operating voltage of the battery to ensure that the battery state is stable and ready to provide auxiliary power or store excess energy at any time. The operating voltage here refers to the voltage in the state where the aerial work platform has started to work.

[0066] If the actual load rate is not higher than the preset load rate, it indicates that the engine still has excess capacity under the current task. At this time, if the operating voltage of the battery is lower than the preset voltage, i.e. the battery is insufficient, the system will adjust the output of the engine to meet the working demand while additionally outputting part of the energy to charge the battery.

[0067] In some embodiments of the present application, if the initial voltage is not lower than the preset voltage, the generator is controlled to be in a shutdown state, specifically:

[0068] The engine + motor working mode is run, and it is detected whether the operating voltage of the battery is lower than the preset voltage;

[0069] If the operating voltage of the battery is lower than the preset voltage, the operating speed of the aerial work platform is reduced.

[0070] The above method is applied to the scene where the engine + motor works simultaneously to meet the working demand, when the initial voltage of the battery is high enough to reach or exceed the preset voltage threshold, the control system will start the engine and the motor to make them work simultaneously. The engine serves as the main power source to provide most of the required power, and the motor serves as the auxiliary power source to provide additional power or recover energy when needed. During the joint work of the engine and the motor, the control system will continuously monitor the operating voltage of the battery to ensure that the battery state remains within the ideal range. The operating voltage of the battery reflects its current energy state and is a key indicator for determining whether the working mode needs to be adjusted.

[0071] If the operating voltage of the battery is lower than the preset voltage in the working mode, it indicates that the battery power is decreasing and may not be sufficient to support the continuous operation of the motor or future high load requirements. In order to protect the battery and avoid over-discharge, the control system will automatically reduce the operating speed of the aerial work platform or limit its functions. This operation can be achieved by reducing the engine output power or limiting the power output of the motor, thereby reducing the dependence on the battery and ensuring that the battery will not be damaged due to over-discharge.

[0072] Further, in some embodiments of the present application, if the initial voltage is not lower than the preset voltage, controlling the generator to be in a shutdown state further comprises:

[0073] running an overloading standby mode to shut down the engine and the motor;

[0074] releasing the shutdown state of the generator to start the generator and charge the battery.

[0075] In some scenarios, such as when the battery operating voltage subsequently decreases to below the preset voltage due to long-time work, it is difficult to ensure the operation demand of the engine + motor running simultaneously, and the control system will stop the operation of the engine and the motor to avoid over-discharge of the battery. After the engine and the motor are shut down, if the battery voltage further decreases to a level that needs to be charged, the control system will release the shutdown state of the generator to restart the generator. The starting of the generator is to provide power to the battery to ensure that the battery power can be replenished in time. Until the battery voltage returns to a safe level. This process helps to prevent deep discharge of the battery and protect the battery from damage, while ensuring that the aerial work platform has sufficient power reserves for the next use.

[0076] In some embodiments of the present application, if the initial voltage is lower than the preset voltage, the generator is controlled to start to charge the battery, specifically:

[0077] turning off the motor, running a single-engine working mode, and detecting whether the actual load rate of the engine is higher than the preset load rate and whether the operating voltage of the battery is lower than the preset voltage;

[0078] If the actual load rate is not higher than the preset load rate and the operating voltage of the battery is lower than the preset voltage, the engine is controlled to work so as to charge the battery together with the generator.

[0079] The above method is applied to the scenario where the engine can meet the work demand alone. When the control system detects that the initial voltage of the battery is lower than the preset voltage, the engine will work alone first, which means the engine will bear the entire power demand and the motor will not directly participate in power output temporarily. When the engine works alone, the control system will continuously monitor the actual load rate of the engine, i.e., the ratio of the current load of the engine to its maximum output capacity, to determine whether the engine has enough surplus to drive the platform and charge the battery at the same time. At the same time, the control system will also continuously monitor the operating voltage of the battery to ensure that the state of the battery is tracked in real time. The operating voltage here refers to the voltage in the working state of the aerial work platform.

[0080] If the actual load rate is not higher than the preset load rate, it indicates that the engine has surplus and can allocate part of the power for charging. At this time, the control system will adjust the output of the engine to work with the generator, i.e., the engine will provide power required for the platform to run and charge the battery through the generator until the voltage of the battery returns to above the preset level.

[0081] In some embodiments of the present application, if the initial voltage is lower than the preset voltage, the generator is controlled to start to charge the battery, specifically:

[0082] The engine + motor working mode is run, and it is detected whether the operating voltage of the battery is lower than the preset voltage.

[0083] If the operating voltage of the battery is lower than the preset voltage, the running speed of the aerial work platform is reduced.

[0084] The above method is applied to the scenario where the engine + motor runs simultaneously to meet the work demand. The engine serves as the main power source and provides most of the required power; the motor assists the engine to ensure that the platform has enough power to complete the work.

[0085] During the joint work of the engine and the motor, the control system continuously monitors the operating voltage of the battery to ensure that the state of the battery is tracked in real time. The operating voltage of the battery reflects its current energy state and is crucial for determining whether the working mode needs to be adjusted. If the operating voltage of the battery is still lower than the preset voltage even after the generator has started to generate electricity, it indicates that the battery is still insufficient, which may affect the stable operation of the platform and the health of the battery. At this time, the control system will automatically reduce the running speed of the aerial work platform or limit certain functions. This can reduce the dependence on the battery and avoid over-discharging of the battery, while giving the battery more time to charge through the coordinated work of the engine and the generator to recover to a safe working voltage level.

[0086] In some embodiments of the application, if the initial voltage is lower than the preset voltage, the control system controls the generator to start charging the battery, and further comprises:

[0087] Running the overload standby mode, the engine and the motor are shut down.

[0088] When the battery voltage is lower than the preset threshold, it indicates that the battery power is severely insufficient. If the motor continues to be used, it may cause the battery to be deeply discharged, which is extremely harmful to the battery health and may shorten the service life of the battery. Therefore, the shutdown process can prevent the battery from further discharging and avoid damaging the battery. Through the shutdown process, the full output of the generator can be used to charge the battery instead of being distributed to other loads. This can quickly replenish the battery with energy and restore it to normal operating voltage as soon as possible, so that the platform can be put back into work. When the battery power is low, the engine and the motor cannot work efficiently at the same time, and the shutdown process can ensure that all energy is used for the most critical task - charging the battery, thereby optimizing energy use.

[0089] In some embodiments of the application, the method further comprises:

[0090] Before the job is completed, detecting whether the battery power is full;

[0091] If the power is not full, the control system sends an indication to the user whether to charge;

[0092] If the power is full, the job is completed.

[0093] When the job is about to be completed, the control system automatically detects the current power of the battery and evaluates whether it has been fully charged to the preset full power state. This step is achieved by monitoring parameters such as voltage, current and temperature of the battery to ensure that the battery is in the best charging state after the job is completed.

[0094] If the detection result shows that the battery power has not reached the full power state, the control system will send an indication to the operator asking whether to continue charging after the job is completed. This can be achieved through a display screen in the cab or a sound alarm to ensure that the operator can timely understand the status of the battery.

[0095] The operator can choose whether to charge according to the actual situation and subsequent work plan. If charging is selected, the system will automatically switch to the charging mode until the battery is fully charged; if no charging is selected, the system will record the battery status of this job and check the battery power again before the next use.

[0096] If the battery power is already full, the control system will automatically end the charging process to prevent overcharging and notify the operator that the job can be officially completed. This helps to protect the battery and avoid performance degradation or safety risks caused by overcharging.

[0097] In some embodiments of the present application, the preset load rate is 90%. When the engine load rate is lower than 90%, it means that the engine has extra capacity to take on more work. At this time, the system will allow the engine to work and charge the battery at the same time to replenish the battery power. This is because when the engine is not running at full load, its excess production capacity can be used to charge the battery without negatively affecting the efficiency of the engine or the performance of the platform. On the contrary, if the engine load rate exceeds 90%, this indicates that the engine is approaching its maximum output capacity. At this time, the system will prohibit the generator from charging to ensure that the engine can fully meet the working needs of the aerial work platform. Under high-load conditions, all the output of the engine should be used to support the mechanical operation of the platform to avoid dispersing the engine power due to charging, thereby ensuring the stable operation and safety of the platform. The preset load rate of 90% can balance the efficiency of the engine, the charging needs of the battery and the overall performance of the platform.

[0098] A second aspect of the present application provides an aerial work platform, including an engine, a motor, a generator, and a processor. When the processor executes a program, it implements the control method of the aerial work platform hybrid power assembly in any embodiment of the first aspect.

[0099] Aerial work platforms can specifically be street light maintenance lifting platforms, power emergency repair lifting platforms, construction hanging baskets, etc.

[0100] The engine is the primary power source. It can be a diesel or gasoline engine, providing the majority of the mechanical power, driving various operations of the aerial work platform, such as movement and lifting. The motor plays a supporting role in the system. The generator is used to charge the battery.

[0101] According to the aerial work platform provided in the embodiment of the second aspect of the present application, micro-hybrid technology is used to optimize the coordination between the engine and the motor, significantly reduce fuel consumption, reduce carbon emissions and emissions of other pollutants, improve fuel efficiency, reduce dependence on post-processing devices, and reduce maintenance costs.

[0102] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0103] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0104] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included within the scope of the claims of the present application.

Claims

1. A control method of a hybrid power assembly of an aerial work platform, applicable in a hybrid power assembly comprising an engine and a generator, characterized in that, The method comprises: determining an aerial work load parameter, and generating an engine preset load rate and a motor preset load rate based on the aerial work load parameter; in an empty load state, starting the engine and the motor, detecting an initial voltage of the battery, comparing the initial voltage with a preset voltage, determining a voltage comparison result, wherein the preset voltage is determined based on the motor preset load rate, and the motor is adapted to provide power assistance for starting of the engine; if the initial voltage is not lower than the preset voltage, controlling the generator to be in a shutdown state, and determining an aerial work operation mode based on the engine preset load rate and the motor preset load rate; if the initial voltage is lower than the preset voltage, controlling the generator to start to charge the battery, and determining the aerial work operation mode based on the engine preset load rate and the motor preset load rate; wherein the aerial work operation mode comprises a single-engine working mode, an engine+motor working mode and an overload standby mode.

2. The control method of a hybrid power assembly of a high-altitude work platform according to claim 1, characterized in that, The if the initial voltage is not lower than the preset voltage, controlling the generator to be in the shutdown state specifically comprises: turning off the motor, running the single-engine working mode, and detecting whether an actual load rate of the engine is higher than a preset load rate and whether a running voltage of the battery is lower than the preset voltage; if the actual load rate is not higher than the preset load rate and the running voltage of the battery is lower than the preset voltage, controlling the engine to work and charge the battery.

3. The control method of a hybrid power assembly of a high-altitude work platform according to claim 1, characterized in that, The if the initial voltage is not lower than the preset voltage, controlling the generator to be in the shutdown state specifically comprises: running the engine+motor working mode, and detecting whether the running voltage of the battery is lower than the preset voltage; if the running voltage of the battery is lower than the preset voltage, reducing a running speed of the aerial work platform.

4. The control method of a hybrid power assembly of a high-altitude work platform according to claim 3, characterized in that, The if the initial voltage is not lower than the preset voltage, controlling the generator to be in the shutdown state further comprises: running the overload standby mode, and shutting down the engine and the motor; removing the shutdown state of the generator, so that the generator starts and charges the battery.

5. The control method of a hybrid power assembly of a high-altitude work platform according to claim 1, characterized in that, The if the initial voltage is lower than the preset voltage, controlling the generator to start to charge the battery specifically comprises: turning off the motor, running the single-engine working mode, and detecting whether an actual load rate of the engine is higher than a preset load rate and whether a running voltage of the battery is lower than the preset voltage; if the actual load rate is not higher than the preset load rate and the running voltage of the battery is lower than the preset voltage, controlling the engine to work and charge the battery.

6. The control method of a hybrid power assembly of a aerial work platform according to claim 1, characterized in that, The if the initial voltage is lower than the preset voltage, controlling the generator to start to charge the battery specifically comprises: running the engine+motor working mode, and detecting whether the running voltage of the battery is lower than the preset voltage; if the running voltage of the battery is lower than the preset voltage, reducing a running speed of the aerial work platform.

7. The control method of a hybrid power assembly of a high aerial work platform according to claim 6, characterized in that, If the initial voltage is lower than the preset voltage, the generator is controlled to start to charge the battery, and the method further comprises: running an overload standby mode to shut down the engine and the motor.

8. The control method of a hybrid power assembly of a high platform according to any one of claims 1 to 7, characterized by, The method further comprises: before the work is completed, detecting whether the battery is fully charged; if the battery is not fully charged, sending a charging instruction to the user; if the battery is fully charged, ending the work.

9. The control method of a hybrid power assembly for an aerial work platform according to claim 2 or 5, characterized in that, The preset load rate is 90%.

10. An aerial work platform, characterized by, The method comprises: an engine, a motor, a generator, and a processor, wherein the processor executes a program to implement the control method of the aerial work platform hybrid power assembly according to any one of claims 1 to 9.

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