CN210554230U - Hybrid power supply system for engineering machinery - Google Patents
Hybrid power supply system for engineering machinery Download PDFInfo
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- CN210554230U CN210554230U CN201921496351.0U CN201921496351U CN210554230U CN 210554230 U CN210554230 U CN 210554230U CN 201921496351 U CN201921496351 U CN 201921496351U CN 210554230 U CN210554230 U CN 210554230U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The utility model is suitable for an electric engineering machinery continuation of journey technical field provides an engineering machinery hybrid power supply system, including engine, engine gearbox and the generator that connects gradually, the generator is connected power battery, power battery passes through the converter and connects other electric elements; the generator is also connected with a pump motor through a pump motor controller, the pump motor is connected with a plurality of gear pumps, the inlet end of the gear pump is connected with an oil tank, and the outlet end of the gear pump is connected with a first action electric element and a second action electric element through a control valve; the power battery is also connected with the pump motor controller. Therefore, the utility model discloses with hybrid power supply's mode drive engineering machine tool work, energy-conservation, emission reduction, fall and make an uproar, the time of endurance is long, accords with national environmental protection requirement, is adapted to multiple electric engineering machine tool's field work, can use widely on a large scale.
Description
Technical Field
The utility model relates to an electric engineering machine tool continuation of journey technical field especially relates to an engineering machine tool hybrid power supply system.
Background
The electric engineering machinery comprises an excavator, a crane, a bulldozer, a road roller, a paver, a road grader, a forklift, a piling machine, a pushing machine, a tractor, a ferry vehicle, an in-site vehicle and other machinery, and in the working process of the machinery, because the load is very large, the required power is also very large, generally, only a diesel engine can meet the working requirement of the machinery, but the diesel engine has high fuel consumption, wastes energy and pollutes the environment, especially in recent years, the environmental protection requirement is higher and higher, the harmful gas emission of the diesel engine does not reach the standard, so that the large-batch excavator is limited in use and cannot be popularized and used in a large range, and loss is brought to a manufacturer; meanwhile, the diesel engine has very high noise in the working process, and is not beneficial to long-time work of workers; in addition, a diesel engine drives a hydraulic pipeline working system to realize mechanical transmission, and energy loss in the mechanical transmission process is very large.
The electric excavator is driven by electric power, so that energy is saved, and the environmental pollution degree is low. However, the electric excavator is generally operated in the field, so that the charging is very inconvenient, especially for medium-tonnage and large-tonnage electric excavators, the power consumption is very fast, and the pure electric excavator in the prior art has short endurance time and cannot meet the requirement of long-time and continuous field operation of the electric excavator.
In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.
SUMMERY OF THE UTILITY MODEL
To foretell defect, the utility model aims to provide an engineering machine tool hybrid power supply system, its mode with hybrid power supply drives engineering machine tool work, and energy-conservation, emission reduction fall make an uproar, and the time of endurance is long, accords with national environmental protection requirement, is adapted to multiple electric engineering machine tool's field work, can use widely on a large scale.
In order to achieve the above object, the utility model provides an engineering machinery hybrid power supply system, including engine, engine gearbox and generator that connect gradually, the generator is connected with power battery, power battery passes through the converter and connects other electric elements; the generator is also connected with a pump motor through a pump motor controller, the pump motor is connected with a plurality of gear pumps, the inlet end of the gear pump is connected with an oil tank, and the outlet end of the gear pump is connected with a first action electric element and a second action electric element through a control valve; the power battery is also connected with the pump motor controller.
According to the utility model discloses an engineering machine tool hybrid power supply system, first action electric element includes a plurality of hydro-cylinder.
According to the utility model discloses an engineering machine tool hybrid power supply system, the electric component of second action includes a plurality of motor.
According to the utility model discloses an engineering machine tool hybrid power supply system, first action electric element includes steering cylinder, tipping bucket hydro-cylinder, lift cylinder.
According to the utility model discloses an engineering machine tool hybrid power supply system, the electric component of second action includes walking motor and rotating motor.
According to the utility model discloses an engineering machine tool hybrid power supply system, the gear pump includes main oil pump and guide's oil pump, the main oil pump is connected the control valve.
According to the utility model discloses an engineering machine tool hybrid power supply system, the default of the consumption of electric energy among the power battery is 60% ~ 70% of total electric quantity.
According to the utility model discloses an engineering machine tool hybrid power supply system, electric engineering machine tool includes excavator, paver and road grader.
The utility model aims at providing an engineering machine tool hybrid power supply system, which drives a generator through an engine, then drives a pump motor through the generator to carry out subsequent work, and simultaneously, the generator also charges a power battery which is also connected with the pump motor; when the engineering machinery works, electricity stored in the power battery is used firstly, and then the engine drives the generator to generate electricity; in the hybrid power supply system of the utility model, the engine is only used for driving the generator, the output power is low, the engine can be gasoline, diesel oil or new energy engine, so that the harmful gas emission in the tail gas of the electric engineering machinery is reduced, the national environmental protection requirement is met, meanwhile, the energy is saved, and the production cost is reduced; the hybrid power supply system is used, so that the long-time endurance of the electric engineering machinery can be ensured, and the long-time field operation of the electric engineering machinery can be met; the electric engineering machinery is driven by electric power, the noise is low, and the comfort of the working environment is improved. To sum up, the beneficial effects of the utility model are that: the hybrid power supply mode is used for driving the engineering machinery to work, so that the energy is saved, the emission is reduced, the noise is reduced, the endurance time is long, the national environmental protection requirement is met, the hybrid power supply type electric engineering machinery is suitable for field operation of various electric engineering machinery, and the hybrid power supply type electric engineering machinery can be popularized and used in a large range.
Drawings
Fig. 1 is a schematic structural diagram of a hybrid power supply system of the present invention;
in the figure: 1-engine, 11-engine gearbox; 2-generator, 3-power battery, 31-converter, 32-other electric element; 4-pump motor, 41-pump motor controller; 5-gear pump, 6-control valve, 61-first action electric element, 62-second action electric element.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the utility model provides an engineering machinery hybrid power supply system, which comprises an engine 1, an engine gearbox 11 and a generator 2 which are connected in sequence, wherein the generator 2 is connected with a power battery 3, and the power battery 3 is connected with other electric elements 32 through a converter 31; the generator 2 is also connected with a pump motor 4 through a pump motor controller 41, the pump motor 4 is connected with a plurality of gear pumps 5, the inlet end of each gear pump 5 is connected with an oil tank, and the outlet end of each gear pump 5 is connected with a first action electric element 61 and a second action electric element 62 through a control valve 6; the power battery 3 is also connected with a pump motor controller 41.
The utility model discloses in, first action electric element 61 includes a plurality of hydro-cylinder, and second action electric element 62 includes a plurality of motor, for example, the utility model provides an electric engineering machine is the excavator, and then first action electric element 61 includes steering cylinder, tipping bucket hydro-cylinder and lift cylinder, and second action electric element 62 includes walking motor and rotating motor. And the gear pump 5 includes a main oil pump and a pilot oil pump, wherein the main oil pump is connected to the control valve 6, and of course, when the types of the electric engineering machinery are different, the gear pump 5 may include other oil pumps.
The utility model discloses a theory of operation is:
when the electric engineering machinery starts to work, the power battery 3 mainly provides electric quantity, after the electric engineering machinery works for a period of time, after the consumption of electric energy in the power battery 3 reaches a preset value, the engine 1 starts to start to drive the generator 2 to start generating electricity, and the electric quantity sent by the generator 2 is divided into three types according to the service condition of the electric engineering machinery:
when the electric engineering machinery works under high load, all the electric quantity generated by the generator 2 is transmitted to the pump motor 4 through the controller 41 for working; at this time, the amount of electricity in the power battery 3 is also sent to the pump motor 4 for operation through the controller 41; therefore, when the electrical construction machine is operated under a high load, the generator 2 and the power battery 3 are simultaneously discharged.
When the electric engineering machinery B is in the medium working strength, the electric quantity generated by the generator 2 just meets the working requirement of the electric engineering machinery, and the power battery 3 does not need to discharge.
When the electric engineering machinery is in a mild working state, the electric quantity generated by the generator 2 firstly ensures the normal work of the electric engineering machinery, the residual electric quantity is supplemented into the power battery 3, and at the moment, the power battery 3 is in a charging state.
The hybrid power supply system of the power battery 3 and the generator 2 supplies power to the pump motor 4, the pump motor 4 provides a proper rotating speed through a command signal and current sent by the pump motor controller 41 to drive the gear pump 5 to work, so that the gear pump 5 can take oil from an oil tank, and hydraulic power is provided for the first action electric element 61 and the second action electric element 62 to enable the electric engineering machinery to work.
In the working process of the electric engineering machine, the power battery 3 also provides electric quantity to the converter 31, converts high voltage electricity into low voltage electricity, and is used for providing power and signals for other electric elements 32, and the other electric elements 32 comprise lights, a loudspeaker, a fan, a signal controller and a circulating water pump; of course, other working elements requiring electric energy are also included, and the present invention is not described in detail.
In the utility model, the preset value of the electric energy consumption in the power battery 3 is 60% -70% of the total electric quantity; because the electric energy in the power battery 3 needs to be provided to other electric components 32, the electric energy in the power battery 3 needs to be remained by 30-40% at least to satisfy the normal operation of other electric components 32.
The utility model provides an electric engineering machine tool includes machinery such as excavator, paver and road grader.
Because the pump motor 4 is driven by the engine 1, the subsequent working system is driven by the pump motor 4, and the engine 1 only provides electric energy for the pump motor 4; compared with the prior art in which the whole working system is directly driven by the engine 1, the output power of the engine 1 is greatly reduced, so that the engine 1 can be a diesel engine or a gasoline engine, and can also be a new energy engine such as ethanol, methanol or hydrogen fuel; if a diesel engine or a gasoline engine is used, the amount of gasoline or diesel oil consumed by the driving pump motor 4 is greatly reduced, so that the discharge amount of harmful gas in the tail gas of the electric engineering machinery can reach the standard; if the engine 1 is a new energy engine, the tail gas of the electric engineering machinery is basically free of harmful gas, so that the environmental pollution degree can be reduced to the minimum.
The utility model discloses with 1 drive pump motor 4 of engine and combine power battery 3, make pump motor 4 can last the power supply, solved the short problem of pure electric engineering machine tool duration among the prior art, can make engineering machine tool long-time, continuation, heavy-duty work, improved engineering machine tool's work efficiency.
The utility model discloses with the mode drive engineering machine tool work of hybrid power supply, engine 1's output greatly reduced, the noise also reduces, has improved operational environment's travelling comfort.
In the utility model, the engine 1 can select two power generation modes, namely a high-efficiency mode and a power mode, wherein the high-efficiency mode refers to that the engine 1 always runs at a certain constant rotating speed, the conversion efficiency of oil and electricity is the highest, and the mode is adopted under the condition that the electric engineering machinery normally works; the power mode is full load power generation of the generator 1, and is mainly used for charging the power battery 3 or performing high-intensity work on the electric engineering machinery.
The utility model discloses earlier with 1 drive pump motor 4 of engine, again with the subsequent operating system of pump motor 4 drive, though energy transfer process has divided into two steps, however, the electric energy conversion efficiency between the electrical components is higher than the energy transfer of mechanical system, consequently, the utility model discloses it is more energy-conserving, more economical.
In order to verify the economy and the energy conservation of the utility model, the inventor carries out a comparative test, and in the comparative example, 20-ton grade common diesel excavators of various manufacturers with national emission standards of the third country are selected; in the embodiment, according to the utility model discloses a hybrid power supply system installs six emission standard's in the country gasoline engine on electric excavator to reduce electric excavator's battery capacity to 1 ~ 2 h's electric quantity.
Comparative example one: enabling the diesel excavator to carry out high-load work, wherein the oil consumption per hour is 25L, and enabling the diesel excavator to carry out medium-intensity work, and the oil consumption per hour is 20L; the diesel excavator was operated lightly with a fuel consumption of 16L per hour.
Comparative example two: the diesel excavator is enabled to carry out high-load work, and the oil consumption per hour is 24L; the diesel excavator is enabled to work with medium intensity, and the oil consumption per hour is 20L; the diesel excavator was operated lightly with 15L of oil consumed per hour.
Comparative example three: the diesel excavator is enabled to carry out high-load work, and the oil consumption per hour is 27L; the diesel excavator is enabled to work with medium intensity, and the oil consumption per hour is 24L; the diesel excavator was operated lightly with an hourly fuel consumption of 18L.
The utility model discloses other tens of times's experiments have still been carried out, make diesel excavator carry out work under the operating mode condition of difference, make statistics of tens of times's experiments and calculate the average value, and diesel excavator oil consumption per hour is 22L. The utility model discloses no longer describe to the executive process of other comparative examples again, and select wherein the better six group of effect to the proportion, the other data of not showing the part of each proportion see table one.
The first embodiment is as follows: the electric excavator is enabled to carry out high-load work, the electricity consumption per hour is 15 degrees, and the oil consumption per hour is 7L; the electric excavator is enabled to work with medium intensity, the power consumption per hour is 12 degrees, and the oil consumption per hour is 6L; the electric excavator is driven to perform light work, the power consumption per hour is 10 degrees, and the oil consumption per hour is 5L.
Example two: the electric excavator is enabled to carry out high-load work, the electricity consumption per hour is 17 degrees, and the oil consumption per hour is 7L; the electric excavator is enabled to work with medium intensity, the power consumption per hour is 14 degrees, and the oil consumption per hour is 6L; the electric excavator is driven to perform light operation, the power consumption per hour is 12 degrees, and the oil consumption per hour is 5L.
Example three: the electric excavator is enabled to carry out high-load work, the electricity consumption per hour is 15 degrees, and the oil consumption per hour is 7L; the electric excavator is enabled to work with medium intensity, the power consumption per hour is 12 degrees, and the oil consumption per hour is 7L; the electric excavator was operated lightly, and the power consumption per hour was 11 degrees and the oil consumption per hour was 6L.
The utility model discloses other tens of times's test has still been carried out, makes electric excavator work under the operating mode condition of difference, makes statistics of tens of times's test and calculates the average value, and electric excavator is power consumptive 14 degrees per hour, and the oil consumption per hour is 6L. The utility model discloses no longer describe to the executive process of other embodiments, and select wherein the better six group's embodiments of effect, the other data of not showing the part of each embodiment are seen in table one.
According to the market price of petrol and diesel oil at present stage for 6.2 ~ 6.8 yuan/L calculation, the utility model provides an electric excavator can save expense 70 ~ 80 yuan per hour, consequently, the utility model discloses a hybrid power supply formula system can energy saving, reduction in production cost.
Of course, the utility model discloses still to other multiple electric engineering machinery (for example: paver, road grader etc.) carry out the contrast test, the test result is hybrid power supply system's engineering machinery more economical, more energy-conserving, in the utility model discloses in, no longer enumerate one by one to other multiple electric engineering machinery's contrast test.
Table comparison test for other data
To sum up, the utility model drives the generator by the engine, and then drives the pump motor by the generator to carry out subsequent work, and meanwhile, the generator also charges the power battery which is also connected with the pump motor; when the engineering machinery works, electricity stored in the power battery is used firstly, and then the engine drives the generator to generate electricity; in the hybrid power supply system of the utility model, the engine is only used for driving the generator, the output power is low, the engine can be gasoline, diesel oil or new energy engine, so that the harmful gas emission in the tail gas of the electric engineering machinery is reduced, the national environmental protection requirement is met, meanwhile, the energy is saved, and the production cost is reduced; the hybrid power supply system is used, so that the long-time endurance of the electric engineering machinery can be ensured, and the long-time field operation of the electric engineering machinery can be met; the electric engineering machinery is driven by electric power, the noise is low, and the comfort of the working environment is improved. To sum up, the beneficial effects of the utility model are that: the hybrid power supply mode is used for driving the engineering machinery to work, so that the energy is saved, the emission is reduced, the noise is reduced, the endurance time is long, the national environmental protection requirement is met, the hybrid power supply type electric engineering machinery is suitable for field operation of various electric engineering machinery, and the hybrid power supply type electric engineering machinery can be popularized and used in a large range.
Naturally, the present invention can be embodied in many other forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be made by one skilled in the art without departing from the spirit or essential attributes thereof, and it is intended that all such changes and modifications be considered as within the scope of the appended claims.
Claims (8)
1. The hybrid power supply system of the engineering machinery is characterized by comprising an engine, an engine gearbox and a generator which are sequentially connected, wherein the generator is connected with a power battery, and the power battery is connected with other electric elements through a converter; the generator is also connected with a pump motor through a pump motor controller, the pump motor is connected with a plurality of gear pumps, the inlet end of the gear pump is connected with an oil tank, and the outlet end of the gear pump is connected with a first action electric element and a second action electric element through a control valve; the power battery is also connected with the pump motor controller.
2. The power supply system for hybrid power of construction machinery according to claim 1, wherein the first action electric element comprises a plurality of oil cylinders.
3. The work machine hybrid power supply system of claim 2, wherein the second motion electric component comprises a plurality of motors.
4. The hybrid power supply system for construction machinery according to claim 3, wherein the first motion electric element comprises a steering cylinder, a dump bucket cylinder and a lift cylinder.
5. The work machine hybrid power supply system of claim 4, wherein the second motion electric element comprises a travel motor and a rotation motor.
6. The work machine hybrid power supply system of claim 5, wherein the gear pump comprises a main oil pump and a pilot oil pump, the main oil pump being connected to the control valve.
7. The hybrid power supply system for construction machinery according to claim 1, wherein the preset value of the consumption amount of electric energy in the power battery is 60-70% of the total electric quantity.
8. The hybrid power supply system for construction machinery as claimed in claim 1, wherein the electric construction machinery comprises an excavator, a paver and a grader.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921496351.0U CN210554230U (en) | 2019-09-09 | 2019-09-09 | Hybrid power supply system for engineering machinery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921496351.0U CN210554230U (en) | 2019-09-09 | 2019-09-09 | Hybrid power supply system for engineering machinery |
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| CN210554230U true CN210554230U (en) | 2020-05-19 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112195730A (en) * | 2020-09-29 | 2021-01-08 | 徐工集团工程机械股份有限公司道路机械分公司 | Electrically driven paver |
| CN112919316A (en) * | 2021-01-18 | 2021-06-08 | 三一汽车起重机械有限公司 | Crane range-extending power system and driving method thereof and crane |
| CN113525345A (en) * | 2021-07-30 | 2021-10-22 | 三一汽车起重机械有限公司 | Hybrid power engineering machinery limping control method and device and crane |
-
2019
- 2019-09-09 CN CN201921496351.0U patent/CN210554230U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112195730A (en) * | 2020-09-29 | 2021-01-08 | 徐工集团工程机械股份有限公司道路机械分公司 | Electrically driven paver |
| CN112919316A (en) * | 2021-01-18 | 2021-06-08 | 三一汽车起重机械有限公司 | Crane range-extending power system and driving method thereof and crane |
| CN113525345A (en) * | 2021-07-30 | 2021-10-22 | 三一汽车起重机械有限公司 | Hybrid power engineering machinery limping control method and device and crane |
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