Hybrid lifting machinery and its energy consumption methods, devices and equipment

Abstract

This application relates to the technical field of heavy machinery, specifically to a hybrid lifting machine and its energy consumption method, device, and equipment. The method includes: acquiring operating condition information of the hybrid lifting machine; controlling the motor to perform energy recovery when the operating condition information meets a first preset condition; and controlling the engine to consume energy when the operating condition information meets a second preset condition. The operating condition information includes information about the energy recovery system and information about the load being lifted; the first preset condition includes that the energy recovery function of the energy recovery system is normal; the second preset condition includes that there is energy that needs to be consumed by the engine; the energy that needs to be consumed by the engine is determined based on the operating condition information. With this setup, during the descent of the load, energy can be recovered and consumed based on the motor and engine, preventing the conversion of gravitational potential energy into kinetic energy, maintaining a stable descent speed of the load, and achieving a braking effect.

Description

Technical Field

[0001] This application relates to the technical field of heavy machinery, specifically to a hybrid lifting machine and its energy consumption method, device and equipment. Background Technology

[0002] Hybrid lifting machinery is a typical type of periodic operation equipment, with the descent of the load being a typical part of its work cycle. When the load is lowered, its gravitational potential energy decreases. In order to ensure that the gravitational potential energy of the load is not converted into kinetic energy and to maintain a stable descent speed, other methods are needed to dissipate the gravitational potential energy of the load for braking. Summary of the Invention

[0003] In view of this, embodiments of this application aim to provide a hybrid lifting machine and its energy consumption method, apparatus and equipment to consume the gravitational potential energy of the suspended object for braking.

[0004] According to a first aspect of the embodiments of this application, a method for consuming energy in a hybrid lifting machine is provided, comprising:

[0005] Obtain operating condition information of the hybrid lifting machinery; operating condition information includes: information on the energy recovery system and information on the load being lifted;

[0006] When the operating conditions meet the first preset conditions, control the motor to perform energy recovery;

[0007] The first preset condition includes: the energy recovery function of the energy recovery system is normal;

[0008] When the operating conditions meet the second preset conditions, control the engine to consume energy.

[0009] The second preset condition includes: there is energy that needs to be consumed by the engine, wherein the energy that needs to be consumed by the engine is determined based on operating condition information.

[0010] In one embodiment, the normal energy recovery function of the energy recovery system includes:

[0011] The state of charge (SOC) of the batteries in the energy recovery system is below 100%.

[0012] In one embodiment, when the hybrid lifting machinery performs energy recovery, the energy that needs to be consumed by the engine includes: the total energy that needs to be consumed minus the energy recovered, and the remaining energy.

[0013] When hybrid lifting machinery cannot recover energy, the energy that needs to be consumed by the engine includes: the total energy that needs to be consumed.

[0014] In one embodiment, the information of the suspended object includes: the weight of the suspended object, the height of the suspended object, and the descent speed of the suspended object;

[0015] Hybrid lifting machinery energy consumption methods also include:

[0016] The total energy required is determined based on the information about the suspended object.

[0017] In one embodiment, controlling the engine to consume energy includes:

[0018] Based on operating condition information, determine the engine braking method;

[0019] The engine's energy consumption is controlled according to the braking method.

[0020] In one embodiment, determining the engine braking method based on operating condition information includes:

[0021] Based on the operating condition information, determine the target energy value that the engine needs to consume;

[0022] The braking method of the engine is determined based on the target energy value.

[0023] In one embodiment, determining the engine braking method based on a target energy value includes:

[0024] When the target energy value is less than the preset energy value, the engine braking method is determined to be in-cylinder braking;

[0025] When the target energy value is not less than the preset energy value, the engine braking method is determined to be exhaust braking.

[0026] According to a second aspect of the embodiments of this application, a hybrid lifting mechanical energy consumption device is provided, comprising:

[0027] The acquisition module is used to acquire the operating condition information of the hybrid lifting machinery;

[0028] The control module is used to control the motor to recover energy when the operating conditions meet the first preset condition, and to control the engine to consume energy when the operating conditions meet the second preset condition.

[0029] The operating condition information includes: information about the energy recovery system and information about the suspended load; the first preset condition includes: the energy recovery function of the energy recovery system is normal; the second preset condition includes: there is energy that needs to be consumed by the engine; the energy that needs to be consumed by the engine is determined based on the operating condition information.

[0030] According to a third aspect of the embodiments of this application, an electronic device is provided, comprising:

[0031] processor;

[0032] Memory used to store processor-executable instructions;

[0033] The processor is used to execute the hybrid lifting machinery energy consumption method provided in the above embodiments.

[0034] According to a fourth aspect of the embodiments of this application, a hybrid lifting machine is provided, comprising: a hybrid lifting machine body and a control device;

[0035] The control device is used to execute the hybrid lifting machinery energy consumption method provided in the above embodiments.

[0036] The energy consumption method for hybrid lifting machinery provided in this application first acquires the operating condition information of the hybrid lifting machinery; when the operating condition information meets a first preset condition, the motor is controlled to recover energy; when the operating condition information meets a second preset condition, the engine is controlled to consume energy. With this setup, during the descent of the load, energy can be recovered and consumed based on the motor and engine, preventing the conversion of gravitational potential energy into kinetic energy, maintaining a stable descent speed, and achieving a braking effect. Attached Figure Description

[0037] The above and other objects, features, and advantages of this application will become more apparent from the more detailed description of the embodiments of this application in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0038] Figure 1 The diagram shown is a flowchart illustrating a method for consuming energy in a hybrid lifting machine according to an embodiment of this application.

[0039] Figure 2 The diagram shown is a flowchart illustrating another method for consuming energy in a hybrid lifting machine according to an embodiment of this application.

[0040] Figure 3 The diagram shown is a structural schematic of a hybrid lifting mechanical energy consumption device provided in an embodiment of this application.

[0041] Figure 4 The diagram shown is a structural block diagram of an electronic device provided in one embodiment of this application. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Application Overview

[0044] Hybrid lifting machinery is a typical type of periodic operation equipment, with the descent of the load being a typical part of its work cycle. When the load descends, its gravitational potential energy decreases. In order to ensure that the gravitational potential energy of the load is not converted into kinetic energy and to maintain a stable descent speed, other methods are needed to dissipate the gravitational potential energy of the load for braking.

[0045] To address the aforementioned issues, this embodiment first acquires the operating condition information of the hybrid lifting machinery. When the operating condition information meets a first preset condition, the motor is controlled to perform energy recovery. When the operating condition information meets a second preset condition, the engine is controlled to consume energy. The operating condition information includes information about the energy recovery system and information about the load. The first preset condition includes that the energy recovery function of the energy recovery system is normal. The second preset condition includes that there is energy that needs to be consumed by the engine. The energy that needs to be consumed by the engine is determined based on the operating condition information. With this configuration, during the descent of the load, energy can be recovered and consumed based on the motor and engine, preventing the conversion of gravitational potential energy into kinetic energy, maintaining a stable descent speed, and achieving a braking effect.

[0046] Having introduced the basic principles of this application, various non-limiting embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0047] Exemplary methods

[0048] Reference Figure 1 This application provides a method for consuming energy in a hybrid lifting machine, comprising:

[0049] S110: Obtain operating condition information of the hybrid lifting machinery.

[0050] Operating information includes: information about the energy recovery system and information about the suspended load.

[0051] It should be noted that there are multiple ways to obtain operating condition information. In the solution provided in this application, the operating condition information of the hybrid lifting machinery can be obtained through the central control system of the hybrid lifting machinery.

[0052] S120: When the operating conditions meet the first preset conditions, control the motor to perform energy recovery.

[0053] The first preset condition includes: the energy recovery function of the energy recovery system is normal. It should be noted that during the normal operation of hybrid lifting machinery, energy can sometimes be recovered through the motor, thus converting energy into electrical energy and avoiding energy waste. However, in some special circumstances, energy recovery is not possible. Based on this, the solution provided in this application controls the motor to perform energy recovery when the operating conditions meet the first preset condition.

[0054] S130: When the operating condition information meets the second preset condition, control the engine to consume energy.

[0055] The second preset condition includes: the existence of energy that needs to be consumed by the engine; wherein the energy that needs to be consumed by the engine is determined based on operating condition information. In practical applications, due to the limitations of the motor itself, braking based on energy recovery from the motor may not meet the actual braking requirements. Therefore, in the solution provided in this application embodiment, under certain circumstances, the engine can be controlled to consume energy to achieve the braking effect.

[0056] With this setup, energy can be recovered and consumed by the motor and engine during the descent of the suspended load, preventing gravitational potential energy from being converted into kinetic energy, maintaining a stable descent speed and achieving a braking effect.

[0057] Specifically, in one embodiment, the first preset condition includes: the energy recovery function of the energy recovery system is normal. That is, when the energy recovery function of the energy recovery system is normal, the motor is controlled to recover energy. Specifically, the normality of the energy recovery function of the hybrid lifting machinery can be determined first based on the operating condition information.

[0058] In practical applications, the following situations may cause the energy recovery function of hybrid lifting machinery to malfunction: 1. The battery is fully charged, i.e., the battery's state of charge is 100%. 2. The energy recovery system malfunctions, such as motor failure or circuit failure.

[0059] In one embodiment, the second preset condition includes: the existence of energy that needs to be consumed by the engine. It should be noted that the solution provided in this application prioritizes energy recovery. When energy recovery cannot achieve a braking effect, the engine can consume energy to perform braking. Therefore, in the solution provided in this embodiment, when there is energy that needs to be consumed by the engine, the engine is controlled to consume energy to perform braking.

[0060] Specifically, there are two main situations where energy needs to be consumed by the engine: First, the hybrid lifting machinery cannot recover energy. In this case, the electric motor cannot provide braking, and almost all the required energy needs to be consumed by the engine. Second, although the electric motor can provide braking and the hybrid lifting machinery can recover some energy, the energy consumed is greater than the recoverable energy. In this case, the electric motor alone cannot complete the braking, and the engine needs to assist the electric motor in braking. Therefore, the energy consumed by the engine mainly refers to: "the total energy consumed by the hybrid lifting machinery during energy recovery minus the recovered energy" and "the total energy consumed when the hybrid lifting machinery cannot recover energy."

[0061] Specifically, the information about the suspended object includes: the weight and height of the suspended object; wherein, based on the weight and height of the suspended object, the total energy required is determined, including: calculating the product of the weight and height of the suspended object and the gravity coefficient, which is the total energy required.

[0062] In one embodiment, controlling engine energy consumption includes: determining the engine braking mode based on operating condition information; and controlling engine energy consumption according to the braking mode.

[0063] It should be noted that in practical applications, there are various ways to brake using the engine, and selecting the appropriate braking method can more efficiently manage energy consumption. Specifically, the engine braking method is determined based on the amount of energy that needs to be consumed by the engine, according to operating condition information.

[0064] Therefore, when determining the engine braking method based on operating condition information, the target energy value that the engine needs to consume is first determined based on the operating condition information; then, the engine braking method is determined based on the target energy value. This ensures that the selected braking method matches the energy that the engine needs to consume.

[0065] Specifically, the target energy value can be calculated first. When the target energy value is less than the preset energy value, the engine braking method is determined to be in-cylinder braking; when the target energy value is not less than the preset energy value, the engine braking method is determined to be exhaust braking. It should be noted that in-cylinder braking and exhaust braking are engine braking methods. When the engine performs exhaust braking, it must simultaneously perform in-cylinder braking. That is, the engine can choose to perform only in-cylinder braking, or, based on in-cylinder braking, the engine exhaust system can be shut down to perform exhaust braking. Specifically, in-cylinder braking utilizes the compression resistance, internal friction, and intake and exhaust resistance generated by the engine's compression stroke to form braking. However, this braking can only guarantee the energy consumption of 20-30kW for the crane. When the load on the crane is large or the height is high, in-cylinder braking alone cannot consume the crane's potential energy. In this case, based on in-cylinder braking, the engine exhaust system is shut down, thus turning the engine from an internal combustion engine into a compressor. The frictional resistance and pumping resistance of the engine's internal mechanisms are used to consume the crane's excess potential energy. This braking method is exhaust braking.

[0066] In practical applications, in-cylinder braking can only guarantee 20-30kW of energy consumption for the engine, while exhaust braking can consume more energy. Based on this, a preset energy value of 20kW can be set. When the target energy value is less than 20kW, the engine braking method is determined to be in-cylinder braking; when the target energy value is not less than 20kW, the engine braking method is determined to be exhaust braking.

[0067] Based on the above preferred embodiments, the energy consumption method for hybrid lifting machinery provided in this application will be described below with reference to a specific embodiment:

[0068] Reference Figure 2 Hybrid lifting machinery energy consumption methods include:

[0069] S201, Obtain operating condition information.

[0070] It should be noted that the acquired operating information includes: the torque of the crane arm, the output force of the arm, the status of the motor, the status of the engine, etc.

[0071] S202, calculate the total energy required.

[0072] It should be noted that the energy value here refers to the total energy value that needs to be consumed per unit of time.

[0073] S203, determine whether the conditions for energy recovery are met.

[0074] When energy recovery is satisfied, that is, when the energy recovery system of the hybrid lifting machinery is normal and energy recovery can be performed, step S204 is executed.

[0075] When energy recovery is not satisfied, that is, when the energy system of the hybrid lifting machinery cannot recover energy, step S206 is executed.

[0076] S204, determine whether the total energy value is greater than the recovered energy value.

[0077] It should be noted that the energy recovery system can provide feedback on the amount of energy it can recover. Here, the recovered energy value refers to the energy that the energy recovery system can recover per unit of time.

[0078] S205, determine the target energy value as the difference between the total energy value and the recovered energy value.

[0079] The total energy here refers to the total energy consumed per unit of time.

[0080] S206, determine the total energy value as the target energy value.

[0081] S207, determine whether the target energy value is greater than the preset energy value.

[0082] Under normal circumstances, the preset energy value can be, but is not limited to, 20kW.

[0083] S208 controls engine energy consumption using an in-cylinder braking method.

[0084] S209 controls engine energy consumption according to exhaust braking method.

[0085] With this setup, energy can be recovered and consumed by the motor and engine during the descent of the suspended load, preventing gravitational potential energy from being converted into kinetic energy, maintaining a stable descent speed and achieving a braking effect.

[0086] Exemplary device

[0087] The apparatus embodiments of this application can be used to execute the method embodiments of this application. For details not disclosed in the apparatus embodiments of this application, please refer to the method embodiments of this application.

[0088] Figure 3 The diagram shown is a block diagram of a hybrid lifting mechanical energy consumption device according to an embodiment of this application. Figure 3 As shown, the hybrid lifting mechanical energy consumption device includes:

[0089] The acquisition module 31 is used to acquire the operating condition information of the hybrid lifting machinery;

[0090] The control module 32 is used to control the motor to recover energy when the operating condition information meets the first preset condition, and to control the engine to consume energy when the operating condition information meets the second preset condition.

[0091] The operating condition information includes: information about the energy recovery system and information about the suspended load; the first preset condition includes: the energy recovery function of the energy recovery system is normal; the second preset condition includes: there is energy that needs to be consumed by the engine; the energy that needs to be consumed by the engine is determined based on the operating condition information.

[0092] In one embodiment, the energy recovery function of the energy recovery system is normal, including:

[0093] The state of charge of the battery in the energy recovery system is less than 100%.

[0094] In one embodiment, when the hybrid lifting machinery performs energy recovery, the energy that needs to be consumed by the engine is the total energy that the lifting machinery needs to consume minus the recovered energy, leaving the remaining energy.

[0095] When the hybrid lifting machinery is unable to recover energy, the energy that needs to be consumed by the engine is the total energy that the lifting machinery needs to consume.

[0096] In one embodiment, the information of the suspended object includes: the weight of the suspended object and the height of the suspended object;

[0097] The hybrid lifting mechanical energy consumption method also includes:

[0098] The total energy required is determined based on the weight and height of the suspended object.

[0099] In one embodiment, controlling the engine to consume energy includes:

[0100] Based on the aforementioned operating condition information, the braking method of the engine is determined;

[0101] The engine is controlled to consume energy according to the braking method described.

[0102] In one embodiment, determining the engine braking mode based on the operating condition information includes:

[0103] Based on the operating condition information, determine the target energy value that the engine needs to consume;

[0104] Based on the target energy value, the braking method of the engine is determined.

[0105] In one embodiment, determining the engine braking mode based on the target energy value includes:

[0106] When the target energy value is less than the preset energy value, the engine braking method is determined to be in-cylinder braking;

[0107] When the target energy value is not less than the preset energy value, the engine braking method is determined to be exhaust braking.

[0108] Exemplary electronic devices

[0109] See Figure 4 , Figure 4 See the structural block diagram of the electronic device provided in the embodiment of the present invention. Figure 4 As shown, it may include: at least one processor 410, at least one communication interface 420, at least one memory 430 and at least one communication bus 440.

[0110] In this embodiment of the invention, the number of processor 410, communication interface 420, memory 430, and communication bus 440 is at least one, and the processor 410, communication interface 420, and memory 430 communicate with each other through communication bus 440; obviously, Figure 4 The communication connections shown for the processor 410, communication interface 420, memory 430, and communication bus 440 are optional.

[0111] Processor 410 may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present invention.

[0112] The memory 430 stores the application program and may include high-speed RAM memory as well as non-volatile memory, such as at least one disk storage device.

[0113] Specifically, the processor 410 is used to execute an application program in the memory to implement any embodiment of the above-described hybrid lifting machinery energy consumption method.

[0114] Exemplary computer program products and computer-readable storage media

[0115] In addition to the methods and devices described above, embodiments of this application may also be computer program products, which include computer program instructions that, when executed by a processor, cause the processor to perform the steps in the hybrid lifting machinery energy consumption methods according to various embodiments of this application as described in the "Exemplary Methods" section of this specification.

[0116] Computer program products can be written in any combination of one or more programming languages ​​to perform the operations of the embodiments of this application. The programming languages ​​include object-oriented programming languages ​​such as Java and C++, as well as conventional procedural programming languages ​​such as C or similar languages. The program code can be executed entirely on the user's computing device, partially on the user's computing device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0117] Furthermore, embodiments of this application may also be computer-readable storage media storing computer program instructions thereon, which, when executed by a processor, cause the processor to perform the steps in the hybrid lifting machinery energy consumption method according to various embodiments of this application as described in the "Exemplary Methods" section above.

[0118] Computer-readable storage media may take the form of any combination of one or more readable media. A readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may, for example, include, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatuses, or devices, or any combination thereof. More specific examples of readable storage media (a non-exhaustive list) include: electrical connections having one or more wires, portable disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0119] Exemplary hybrid lifting machinery

[0120] This application also provides a hybrid lifting machine, which includes: a hybrid lifting machine body and a control device;

[0121] The control device is used to execute the hybrid lifting machinery energy consumption method described above.

[0122] Specifically, the control device can be the vehicle's HCU (vehicle's ABS actuator) or a chip connected to the vehicle's HCU.

[0123] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A method for consuming energy in a hybrid lifting machine, characterized in that, include: Obtain operating condition information of hybrid lifting machinery; The operating condition information includes: information about the energy recovery system and information about the suspended load; When the operating condition information meets the first preset condition, the motor is controlled to perform energy recovery, wherein the first preset condition includes: the energy recovery function of the energy recovery system is normal; When the operating condition information meets the second preset condition, the engine is controlled to consume energy, wherein the second preset condition includes: there is energy that needs to be consumed by the engine; the energy that needs to be consumed by the engine is determined based on the operating condition information; The control of the engine's energy consumption includes: Based on the aforementioned operating condition information, the braking method of the engine is determined; The engine is controlled to consume energy according to the braking method described above; Determining the engine braking mode based on the operating condition information includes: Based on the operating condition information, determine the target energy value that the engine needs to consume; Based on the target energy value, the braking method of the engine is determined; Determining the engine braking mode based on the target energy value includes: When the target energy value is less than the preset energy value, the engine braking method is determined to be in-cylinder braking; When the target energy value is not less than the preset energy value, the engine braking method is determined to be exhaust braking.

2. The energy consumption method for hybrid lifting machinery according to claim 1, characterized in that, The energy recovery function of the energy recovery system is normal, including: The state of charge of the battery in the energy recovery system is less than 100%.

3. The energy consumption method for hybrid lifting machinery according to claim 1, characterized in that, When the hybrid lifting machinery performs energy recovery, the energy that needs to be consumed by the engine is the total energy that the lifting machinery needs to consume minus the energy recovered, leaving the remaining energy. When the hybrid lifting machinery is unable to recover energy, the energy that needs to be consumed by the engine is the total energy that the lifting machinery needs to consume.

4. The energy consumption method for hybrid lifting machinery according to claim 3, characterized in that, The information about the suspended object includes: the weight of the suspended object and the height of the suspended object; The energy consumption method for the hybrid lifting machinery also includes: The total energy required is determined based on the weight and height of the suspended object.

5. An energy consumption device for a hybrid lifting machine, characterized in that, include: The acquisition module is used to acquire the operating condition information of the hybrid lifting machinery; The control module is used to control the motor to perform energy recovery when the operating condition information meets the first preset condition, and to control the engine to perform energy consumption when the operating condition information meets the second preset condition. The operating condition information includes: information about the energy recovery system and information about the suspended load; the first preset condition includes: the energy recovery function of the energy recovery system is normal; the second preset condition includes: there is energy that needs to be consumed by the engine; the energy that needs to be consumed by the engine is determined based on the operating condition information. When the operating condition information meets the second preset condition, the search control module is also used to determine the engine braking mode based on the operating condition information; and control the engine to consume energy according to the braking mode; determining the engine braking mode based on the operating condition information includes: determining the target energy value of the energy that needs to be consumed by the engine based on the operating condition information; determining the engine braking mode based on the target energy value; determining the engine braking mode based on the target energy value includes: when the target energy value is less than a preset energy value, determining the engine braking mode as in-cylinder braking; when the target energy value is not less than the preset energy value, determining the engine braking mode as exhaust braking.

6. An electronic device, comprising: processor; Memory used to store the processor's executable instructions; The processor is used to execute the energy consumption method of the hybrid lifting machinery according to any one of claims 1 to 4.

7. A hybrid lifting machine, characterized in that, include: Hybrid lifting machinery body and control device; The control device is used to perform the energy consumption method of the hybrid lifting machinery as described in any one of claims 1 to 4.

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