CN118744717A - Control method and platform of hybrid powertrain for aerial work platform - Google Patents

Abstract

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

Description

Control method and platform of hybrid powertrain for aerial work platform

Technical Field

The present application belongs to the technical field of engineering machinery control, and specifically relates to a control method and platform for a hybrid powertrain of an aerial work platform.

Background Art

An aerial work platform is a piece of mechanical equipment designed specifically for construction, maintenance, installation, inspection and other work at heights.

In the related technology, aerial work platforms usually only use traditional engines as power sources, which consume a lot of fuel. In order to meet emission regulations, corresponding post-processing devices need to be added to treat exhaust gas, which increases operating costs and is not conducive to energy conservation and emission reduction.

Summary of the invention

In order to solve at least one aspect of the technical problems existing in the background technology, the present application provides a control method for a hybrid powertrain of an aerial work platform, which combines the engine and the power system to realize the micro-hybrid technology of the aerial work platform assembly, improves fuel economy, and achieves the purpose of energy conservation and emission reduction.

A second aspect of the present application provides an aerial work platform.

The technical solution adopted in this application is:

The first aspect of the present application provides a control method for a hybrid powertrain of an aerial work platform, which is applicable to a hybrid powertrain including an engine and a generator, and includes:

Determine the high-altitude operation load parameter, and generate the engine preset load rate and the motor preset load rate based on the high-altitude operation load parameter;

In a no-load state, starting the engine and the motor, detecting the initial voltage of the battery, and comparing the initial voltage with a preset voltage to determine a voltage comparison result, wherein the preset voltage is determined based on a preset load rate of the motor, and the motor is suitable for providing power assistance for starting the engine;

If the initial voltage is not lower than the preset voltage, the generator is controlled to be in a shutdown state, and the aerial work operation mode is determined based on the preset load rate of the engine and the preset load rate of the motor;

If the initial voltage is lower than the preset voltage, the generator is controlled to start to charge the battery, and the aerial work operation mode is determined based on the preset load rate of the engine and the preset load rate of the motor;

Among them, the aerial work operation mode includes single engine working mode, engine + motor working mode and overload standby mode.

According to the control method of the hybrid powertrain of the aerial work platform provided by the embodiment of the first aspect of the present application, the micro-hybrid technology of the power system is realized. Specifically, the aerial work load parameter is first determined, and this parameter 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 generate the engine preset load rate and the motor preset load rate. When the aerial work platform is started without load, the engine is started first. The engine can be a diesel engine or other types of thermal engines to provide the main power source. But at this time, the motor can be started synchronously to provide power assistance for the start of the engine to reduce fuel consumption and exhaust emissions. The battery is used as an auxiliary power source to store energy and provide it to the motor when needed. When the engine is started, the initial voltage of the on-board battery will be detected, and then the initial voltage of the detected battery will be compared with the preset voltage, wherein this preset voltage is based on the preset load rate of the motor and ensures the optimal working state of the battery under the current preset load rate and the platform working requirements. If the initial voltage of the battery is not lower than the preset voltage, it means that the battery is fully charged and does not need to be charged immediately at this time, so the generator remains in a shutdown state to save energy. If the initial voltage of the battery is lower than the preset voltage, it means that the battery is insufficient, and the generator needs to be started to charge the battery. Further, because the load parameters of aerial work are large and small, sometimes the engine can meet the work requirements by working alone, sometimes the engine and the motor need to run at the same time to meet the work requirements, and sometimes the load parameters of aerial work are too high, and the engine and the motor cannot meet the work requirements when running at the same time. Therefore, in this application, regardless of whether the initial voltage of the battery is lower than the preset voltage, the aerial work operation mode can be determined based on the preset load rate of the engine and the preset load rate of the motor, that is, the single engine working mode, the engine + motor working mode and the overload standby mode, so as to achieve reasonable use of energy. In summary, the control method of the aerial work platform hybrid powertrain provided by the embodiment of the present application is helpful to optimize energy use, avoid unnecessary energy waste, and ensure the normal operation and sufficient power supply of the aerial work platform. In this way, the aerial work platform can not only reduce its dependence on fossil fuels and reduce operating costs, but also reduce the emission of greenhouse gases and other harmful substances, and contribute to environmental protection. In addition, due to the reduced dependence on the post-processing device, the maintenance cost and overall operation cost of the aerial work platform are also reduced.

According to an 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:

Turn off the motor, run the single engine working mode, and detect whether the actual load rate of the engine is higher than the preset load rate, and detect whether the operating 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 operating voltage of the battery is lower than the preset voltage, the engine is controlled to operate and the battery is charged.

According to an 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:

Running the engine + motor working mode, detecting whether the operating voltage of the battery is lower than the preset voltage;

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

According to an embodiment 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 includes:

Running in overload standby mode, shutting down the engine and the motor;

The shutdown state of the generator is released so that the generator can be started and the battery can be charged.

According to an embodiment of the present application, if the initial voltage is lower than the preset voltage, controlling the generator to start to charge the battery is specifically:

Turn off the motor, run the single engine working mode, and detect whether the actual load rate of the engine is higher than the preset load rate, and detect whether the operating 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 operating voltage of the battery is lower than the preset voltage, the engine is controlled to operate together with the generator to charge the battery.

According to an embodiment of the present application, if the initial voltage is lower than the preset voltage, controlling the generator to start to charge the battery is specifically:

Running the engine + motor working mode, detecting whether the operating voltage of the battery is lower than the preset voltage;

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

According to an embodiment of the present application, if the initial voltage is lower than the preset voltage, controlling the generator to start to charge the battery further includes:

The overload standby mode is operated to shut down the engine and the motor.

According to one embodiment of the present application, it also includes:

Before the operation is finished, checking whether the battery is fully charged;

If the battery is not fully charged, the user will be prompted to indicate whether to charge the battery.

If the battery is full, the operation is completed.

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

The second aspect of the present application provides an aerial work platform, including:

An engine, a motor, a generator and a processor, wherein when the processor executes a program, the control method of the hybrid power assembly of the aerial work platform as described in any embodiment of the first aspect as described above is implemented.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

FIG1 is a schematic flow chart of a control method for a hybrid powertrain of an aerial work platform provided in an embodiment of the present application.

DETAILED DESCRIPTION

In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the protection scope 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 may be combined with each other without conflict.

In addition, in the description of the present application, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying 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 specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

As shown in FIG1 , a first aspect of the present application provides a control method for a hybrid powertrain of an aerial work platform, which is applicable to a hybrid powertrain including an engine and a generator, and includes:

Step 100: Determine the high-altitude operation load parameter, and generate the engine preset load rate and the motor preset load rate based on the high-altitude operation load parameter.

Step 200, under no-load state, start the engine and the motor, detect the initial voltage of the battery, and compare the initial voltage with the preset voltage to determine the voltage comparison result, wherein the preset voltage is determined based on the preset load rate of the motor, and the motor is suitable for providing power assistance for starting the engine.

Step 300: If the initial voltage is not lower than the preset voltage, the generator is controlled to be in a shutdown state, and the aerial work operation mode is determined based on the preset engine load rate and the preset motor load rate.

Step 400: If the initial voltage is lower than the preset voltage, the generator is controlled to start to charge the battery, and the aerial work operation mode is determined based on the preset load rate of the engine and the preset load rate of the motor.

Among them, the aerial work operation modes include single-engine working mode, engine + motor working mode and overload standby mode.

In step 100, the aerial work platform will have different load requirements under different working conditions, and these requirements will affect the working conditions of the engine and motor. When determining the load parameters of aerial work, the following key parameters are usually considered: platform load, which can specifically include the weight of operators, tools and materials; lifting height, the lifting force required varies with the height of the platform; the extension length of the working arm, the longer the extension length, the greater the driving force required; the speed of the platform movement, including the speed in the vertical and horizontal directions; the working environment, such as terrain (flat or rugged), wind speed and other factors.

The preset engine load rate is set based on the typical working state of the engine on the aerial work platform. The preset load rate is usually set at a level that ensures that the engine operates efficiently without excessively consuming fuel. For example, the preset load rate can be set to 90%. Specifically, the preset engine load rate can be calculated using the following parameters: determine the maximum output power of the engine, which is data provided by the engine manufacturer; calculate the average power demand under typical working conditions, which is calculated based on the load parameters of the aerial work platform; determine the preset engine load rate, and set the preset load rate based on the ratio between the average power demand under typical working conditions and the maximum output power.

The motor preset load rate also needs to be determined based on 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 when additional power is needed. Specifically, the motor preset load rate can be calculated using the following parameters: determine the maximum output power of the motor, which is data provided by the motor manufacturer; calculate the average power demand under the motor's auxiliary working state, which is calculated based on the load parameters of the aerial work platform, especially when the engine load is high and the motor needs to provide additional power; determine the motor's preset load rate, and set the preset load rate based on the ratio between the average power demand and the maximum output power under the motor's auxiliary working state.

In step 200, the engine generally refers to an internal combustion engine, specifically a diesel engine or a gasoline engine, etc., which is the main power source of the hybrid power system in this application. 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 here refers to the voltage of the aerial work platform when it is just started but not yet in operation. As an auxiliary power source, the battery plays a vital role in the hybrid power system. It is responsible for providing additional power to drive the motor when the engine cannot meet the load requirements alone, thereby realizing the hybrid power output of the engine + motor. When the engine is started at no load, the motor can be started synchronously to provide power assistance for the start of the engine to reduce fuel consumption and exhaust emissions.

The preset voltage threshold is set based on the motor preset load rate and ensures that the current preset load rate meets the platform's working requirements and the battery's health. It represents the minimum voltage at which the battery can effectively support platform operation without external charging. The purpose is to ensure that the battery works in the best condition, neither over-discharging nor over-charging.

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 does not need to be charged immediately. In this case, the control system will not start the generator, that is, the generator remains in the shutdown state. The power generated by the engine will be fully used for the mechanical operation of the aerial work platform instead of charging the battery, which can improve the overall energy efficiency and fuel economy.

In this case, the aerial work operation mode can be further determined based on the preset engine load rate and the preset motor load rate, specifically including single engine working mode, engine + motor working mode and overload standby mode.

In step 400, the initial voltage of the battery is lower than the preset voltage, and the battery cannot provide enough power to support the normal operation of the aerial work platform, and may even cause battery damage, so charging is required to ensure that the battery can quickly recover to above the preset voltage.

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

According to the control method of the hybrid powertrain of the aerial work platform provided by the embodiment of the first aspect of the present application, the micro-hybrid technology of the power system is realized. Specifically, the aerial work load parameter is first determined, and this parameter 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 generate the engine preset load rate and the motor preset load rate. When the aerial work platform is started without load, the engine is started first. The engine can be a diesel engine or other types of thermal engines to provide the main power source. But at this time, the motor can be started synchronously to provide power assistance for the start of the engine to reduce fuel consumption and exhaust emissions. The battery is used as an auxiliary power source to store energy and provide it to the motor when needed. When the engine is started, the initial voltage of the on-board battery will be detected, and then the initial voltage of the detected battery will be compared with the preset voltage, wherein this preset voltage is based on the preset load rate of the motor and ensures the optimal working state of the battery and the working requirements of the platform under the current preset load rate. If the initial voltage of the battery is not lower than the preset voltage, it means that the battery is fully charged and does not need to be charged immediately at this time, so the generator remains in a shutdown state to save energy. If the initial voltage of the battery is lower than the preset voltage, it means that the battery is insufficient, and the generator needs to be started to charge the battery. Further, because the load parameters of aerial work are large and small, sometimes the engine can meet the work requirements by working alone, sometimes the engine and the motor need to run at the same time to meet the work requirements, and sometimes the load parameters of aerial work are too high, and the engine and the motor cannot meet the work requirements when running at the same time. Therefore, in this application, regardless of whether the initial voltage of the battery is lower than the preset voltage, the aerial work operation mode can be determined based on the preset load rate of the engine and the preset load rate of the motor, that is, the single engine working mode, the engine + motor working mode and the overload standby mode, so as to achieve reasonable use of energy. In summary, the control method of the aerial work platform hybrid powertrain provided by the embodiment of the present application is helpful to optimize energy use, avoid unnecessary energy waste, and ensure the normal operation and sufficient power supply of the aerial work platform. In this way, the aerial work platform can not only reduce its dependence on fossil fuels and reduce operating costs, but also reduce the emission of greenhouse gases and other harmful substances, and contribute to environmental protection. In addition, due to the reduced dependence on the post-processing device, the maintenance cost and overall operation cost of the aerial work platform are also reduced.

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:

Turn off the motor, run the single engine working mode, and detect whether the actual load rate of the engine is higher than the preset load rate, and detect whether the operating 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 operating voltage of the battery is lower than the preset voltage, the engine is controlled to operate and the battery is charged.

The above method is applied to the scenario where the engine can meet the work demand alone, where the load rate refers to the ratio of the engine's maximum output power under the current working conditions. 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 ensures that the engine can operate efficiently without excessive fuel consumption.

When the battery voltage is sufficient, the control system will let the engine work alone, which means that the engine will bear all power requirements, and the motor or generator will not be involved in the work temporarily. The engine working alone can convert fuel into power more directly and reduce the loss of energy conversion. Even when the engine is working 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 when needed. The operating voltage here refers to the voltage when the aerial work platform has started working.

If the actual load rate is not higher than the preset load rate, it means that the engine still has spare power for the current task. At this time, if the operating voltage of the battery is lower than the preset voltage, that is, the battery power is insufficient, the system will adjust the engine output so that it can meet the work requirements while outputting additional energy to charge the battery.

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:

Run the engine + motor working mode to detect whether the battery operating voltage is lower than the preset voltage;

If the operating voltage of the battery is lower than the preset voltage, reduce the operating speed of the aerial work platform.

The above method is applied to the scenario where the engine + motor are running simultaneously to meet the working requirements. When the initial voltage of the battery is high enough and reaches or exceeds the preset voltage threshold, the control system will start the engine and motor so that both work at the same time. The engine is the main power source and provides most of the required power; the motor is an auxiliary power source that can provide additional power or recover energy when needed. While the engine and motor are working together, the control system will continuously monitor the operating voltage of the battery to ensure that the battery status remains within the ideal range. The operating voltage of the battery reflects its current energy state and is a key indicator to determine whether the working mode needs to be adjusted.

If the battery's operating voltage is lower than the preset voltage during operation, this indicates that the battery charge is decreasing and may not be sufficient to support continued operation of the motor or future high load requirements. In order to protect the battery and avoid excessive 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 reliance on the battery and ensuring that the battery is not damaged by excessive discharge.

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 includes:

Run in overload standby mode and shut down the engine and motor;

Release the generator from shutdown state to allow the generator to start and charge the battery.

In some scenarios, if the battery operating voltage subsequently drops below the preset voltage due to long-term operation, it is difficult to ensure the operating requirements of the engine + motor running at the same time. The control system will stop the operation of the engine and motor to avoid excessive discharge of the battery. After the engine and motor are stopped, if the battery voltage drops further to a level that requires charging, the control system will release the shutdown state of the generator and restart the generator. The generator is started 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 prevent deep discharge of the battery, protects the battery from damage, and ensures that the aerial work platform has sufficient power reserves when it is used next time.

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:

Turn off the motor, run the single engine working mode, and detect whether the actual load rate of the engine is higher than the preset load rate, and detect whether the operating 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 operating voltage of the battery is lower than the preset voltage, the engine is controlled to work together with the generator to charge the battery.

The above method is applied to the scenario where the engine can meet the working requirements alone. When the control system detects that the initial voltage of the battery is lower than the preset voltage, it will first let the engine work alone, which means that the engine will bear all the power requirements, and the motor will not directly participate in the power output for the time being. When the engine works alone, the control system will continue to monitor the actual load rate of the engine, that is, the ratio of the current load of the engine to its maximum output capacity. This step is to determine whether the engine has enough spare power to drive the platform and charge the battery at the same time. At the same time, the control system will also continue to monitor the operating voltage of the battery to ensure that the battery status is tracked in real time. The operating voltage here refers to the voltage when the aerial work platform has started working.

If the actual load rate is not higher than the preset load rate, it means that the engine still has spare power and some power can be allocated for charging. At this time, the control system will adjust the output of the engine to make it work together with the generator, that is, in addition to providing the power required for platform operation, the engine will also charge the battery through the generator until the battery voltage returns to above the preset level.

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:

Run the engine + motor working mode to detect whether the battery operating voltage is lower than the preset voltage;

If the operating voltage of the battery is lower than the preset voltage, reduce the operating speed of the aerial work platform.

The above method is applied to the scenario where the engine + motor run simultaneously to meet the work requirements. The engine is 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.

During the period when the engine and motor are working together, the control system will continuously monitor the operating voltage of the battery to ensure that the battery status is tracked in real time. The operating voltage of the battery reflects its current energy state and is crucial to determine whether the working mode needs to be adjusted. If the operating voltage of the battery is still lower than the preset voltage when the generator has started to generate electricity, this indicates that the battery power 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 operating speed of the aerial work platform or limit certain functions. Doing so can reduce reliance on the battery and avoid over-discharge of the battery, while giving the battery more time to charge through the coordinated work of the engine and generator and restore to a safe operating voltage level.

In some embodiments of the present application, if the initial voltage is lower than the preset voltage, controlling the generator to start to charge the battery also includes:

Run in overload standby mode and shut down the engine and motor.

When the battery voltage is below the preset threshold, it indicates that the battery is seriously insufficient. If the motor continues to be used, it may cause deep discharge of the battery, which is extremely detrimental to the health of the battery and may shorten the battery life. Therefore, shutdown processing can prevent the battery from further discharge and avoid battery damage. Through shutdown processing, it can be ensured that the full output of the generator is used to charge the battery instead of being allocated to other loads. This can replenish energy to the battery faster and restore it to normal operating voltage as soon as possible, so that the platform can be put back into work. When the battery is low, the engine and motor cannot work efficiently at the same time. Shutdown processing can ensure that all energy is used for the most critical task-charging the battery, thereby optimizing energy use.

In some embodiments of the present application, the method further comprises:

Before the operation is finished, check whether the battery is fully charged;

If the battery is not fully charged, the user will be prompted to indicate whether to charge the battery.

If the battery is full, the operation is completed.

When the operation is about to end, the control system will automatically detect the current power of the battery and evaluate whether it has been fully charged to the preset full state. This step is achieved by monitoring parameters such as battery voltage, current and temperature to ensure that the battery is in the best charging state after the operation is completed.

If the test results show that the battery is not fully charged, the control system will indicate to the operator whether it is necessary to continue charging after the operation. This can be achieved through a display screen or an audible alarm in the cab, ensuring that the operator can know the status of the battery in a timely manner.

The operator can choose whether to charge the battery according to the actual situation and subsequent work plan. If the operator chooses to charge, the system will automatically switch to charging mode until the battery is fully charged; if the operator chooses not to charge, the system will record the battery status of this operation and check the battery level again before the next use.

If the battery is fully charged, the control system will automatically end the charging process to prevent overcharging and notify the operator that the operation can be officially ended. This helps protect the battery and avoid battery performance degradation or safety risks caused by overcharging.

In some embodiments of the present application, the preset load rate is 90%. When the engine load rate is less 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 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 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.

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.

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

The engine is the main power source. It can be a diesel engine, a gasoline engine, etc. It is responsible for providing most of the mechanical power to drive various operations of the aerial work platform, such as moving and lifting. The motor plays an auxiliary role in the system. The generator is used to charge the battery.

The aerial work platform provided in accordance with the second aspect of the embodiment of the present application adopts micro-hybrid technology 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.

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

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

The above is only 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 principle of the present application should be included in the scope of the claims of the present application.

Claims (10)

1. A control method for a hybrid powertrain of an aerial work platform, applicable to a hybrid powertrain including an engine and a generator, characterized in that it comprises: Determine the high-altitude operation load parameter, and generate the engine preset load rate and the motor preset load rate based on the high-altitude operation load parameter; In a no-load state, starting the engine and the motor, detecting the initial voltage of the battery, and comparing the initial voltage with a preset voltage to determine a voltage comparison result, wherein the preset voltage is determined based on a preset load rate of the motor, and the motor is suitable for providing power assistance for starting the engine; If the initial voltage is not lower than the preset voltage, the generator is controlled to be in a shutdown state, and the aerial work operation mode is determined based on the preset load rate of the engine and the preset load rate of the motor; If the initial voltage is lower than the preset voltage, the generator is controlled to start to charge the battery, and the aerial work operation mode is determined based on the preset load rate of the engine and the preset load rate of the motor; Among them, the aerial work operation mode includes single engine working mode, engine + motor working mode and overload standby mode. 2. The control method of the aerial work platform hybrid powertrain according to claim 1, characterized in that if the initial voltage is not lower than the preset voltage, the generator is controlled to be in a shutdown state, specifically: Turn off the motor, run the single engine working mode, and detect whether the actual load rate of the engine is higher than the preset load rate, and detect whether the operating 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 operating voltage of the battery is lower than the preset voltage, the engine is controlled to operate and the battery is charged. 3. The control method of the aerial work platform hybrid powertrain according to claim 1, characterized in that if the initial voltage is not lower than the preset voltage, the generator is controlled to be in a shutdown state, specifically: Running the engine + motor working mode, detecting whether the operating voltage of the battery is lower than the preset voltage; If the operating voltage of the battery is lower than the preset voltage, the operating speed of the aerial work platform is reduced. 4. The control method of the aerial work platform hybrid powertrain according to claim 3, characterized in that if the initial voltage is not lower than the preset voltage, the generator is controlled to be in a shutdown state, and further comprising: Running in overload standby mode, shutting down the engine and the motor; The shutdown state of the generator is released so that the generator can be started and the battery can be charged. 5. The control method of the aerial work platform hybrid powertrain according to claim 1, characterized in that if the initial voltage is lower than the preset voltage, the generator is controlled to start to charge the battery, specifically: Turn off the motor, run the single engine working mode, and detect whether the actual load rate of the engine is higher than the preset load rate, and detect whether the operating 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 operating voltage of the battery is lower than the preset voltage, the engine is controlled to operate together with the generator to charge the battery. 6. The control method of the hybrid powertrain of an aerial work platform according to claim 1, characterized in that if the initial voltage is lower than the preset voltage, the generator is controlled to start to charge the battery, specifically: Running the engine + motor working mode, detecting whether the operating voltage of the battery is lower than the preset voltage; If the operating voltage of the battery is lower than the preset voltage, the operating speed of the aerial work platform is reduced. 7. The control method of the aerial work platform hybrid powertrain 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 further comprising: The overload standby mode is operated to shut down the engine and the motor. 8. The control method of a hybrid powertrain of an aerial work platform according to any one of claims 1 to 7, characterized in that it further comprises: Before the operation is finished, checking whether the battery is fully charged; If the battery is not fully charged, the user will be prompted to indicate whether to charge the battery. If the battery is full, the operation is completed. 9 . The control method of a hybrid powertrain of an aerial work platform according to claim 2 or 5 , wherein the preset load rate is 90%. 10. An aerial work platform, characterized by comprising: An engine, a motor, a generator and a processor, wherein when the processor executes a program, the control method of the hybrid power assembly of the aerial work platform as described in any one of claims 1 to 9 is implemented.