CN202896268U - Hybrid power return circuit based on mechanical and hydraulic combined energy regeneration - Google Patents
Hybrid power return circuit based on mechanical and hydraulic combined energy regeneration Download PDFInfo
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- CN202896268U CN202896268U CN2012205061332U CN201220506133U CN202896268U CN 202896268 U CN202896268 U CN 202896268U CN 2012205061332 U CN2012205061332 U CN 2012205061332U CN 201220506133 U CN201220506133 U CN 201220506133U CN 202896268 U CN202896268 U CN 202896268U
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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
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Abstract
The utility model discloses a hybrid power return circuit based on mechanical and hydraulic combined energy regeneration. Two big drawbacks in the technology of the prior art are that 1 specific energy of a hydraulic energy storage device is very low; and 2 the energy-releasing speed of the hydraulic energy storage device is too high, and therefore the driving performance and comfortableness of a vehicle are affected. The hybrid power return circuit based on mechanical and hydraulic combined energy regeneration comprises an engine, a bidirectional hydraulic pump/ motor, a flywheel energy storage apparatus, a safety valve group, an oil supplement module, a hydraulic energy storage apparatus, and a hydraulic motor. The hybrid power return circuit based on mechanical and hydraulic combined energy regeneration is characterized in that in a hydraulic hybrid power return circuit, a flywheel is used for energy storage, the specific energy of the hydraulic energy storage device is improved, and therefore the specific energy of a combined energy storage device is larger than the specific energy of a single hydraulic energy storage device. Through the valve-controlled hydraulic energy-storage apparatus, oil liquid releasing speed can be controlled, and the driving performance of the vehicle is improved. Additionally, an energy adjusting valve and an energy accumulating device can also form a self-adaptive energy accumulating device return circuit, and system fluid pulsation can be absorbed.
Description
Technical field
The utility model relates to the hydraulic hybrid loop, is a kind of hydraulic hybrid loop based on machine liquid associating energy regeneration.
Background technology
In hybrid vehicle and the construction machinery and equipment, except main power (driving engine), also has an auxiliary power source.This auxiliary power source is in fact recovery and the re-use device of a braking energy, comprises energy-storage travelling wave tube, relative control apparatus and braking energy regeneration strategy.When car brakeing, auxiliary power source reclaims the vehicle motion energy, and it is stored in the energy-storage travelling wave tube; When treating vehicle start or acceleration, auxiliary power source releases energy, and accelerates starting or the accelerator of vehicle.According to the physical form of institute's stored energy in the energy-storage travelling wave tube, hybrid power mainly contains electricity and mixes (battery energy storage), mechanical mixture (flywheel energy storage), hydraulic hybrid (energy storage energy storage) three major types.
Hydraulic hybrid has been compared obvious power density windward with electricity mixed power, also to have a load-carrying capacity large for hydraulic hybrid in addition, but the advantages such as stable drive, the release of stored energy short time; Hydraulic hybrid is compared with mechanical mixture power, easily realizes stepless time adjustment, is easy to realize overload protection, and energy storage time is long etc.With respect to the above advantage of electricity mixed power and mechanical mixture power, and the energy-conservation potential quality of hydraulic hybrid itself, make it have very strong competitive power in fields such as Medium or severe type vehicle and construction machinery and equipments.
Hydraulic accumulating device is as the energy-storage travelling wave tube of hybrid power, although have high-specific-power, long-time energy storage and entirely fill and the advantage such as full exoergic power is strong, two large drawbacks are also arranged: 1, the specific energy of hydraulic accumulating device is very low.2, it is too fast that hydraulic accumulating device is released energy speed, affects driving performance and the traveling comfort of vehicle.
The utility model organically combines the mechanical energy closed-center system for the above drawback of the energy regenerating device in conventional hydraulic hybrid power loop, can improve the specific energy of energy regenerating device, improves energy regeneration efficient; Release the problem of energy excessive velocities for hydraulic accumulating device in the hydraulic hybrid power system, take the hydraulic energy control cock, improve driving performance and the traveling comfort of vehicle.
Summary of the invention
The purpose of this utility model is to improve the specific energy of hydraulic accumulation energy device in the hydraulic hybrid loop, improves energy regeneration efficient, and improves driving performance and the traveling comfort of hydraulic hybrid dynamic automobile and construction machinery and equipment.
The technical solution adopted in the utility model is as follows:
The hybrid power loop of machine liquid associating energy regeneration comprises driving engine, bidirectional hydraulic pump/motor, energy accumulation device for fly wheel, safety valve group, repairing module, hydraulic accumulation energy device, HM Hydraulic Motor.Engine output shaft is connected by the input shaft of first clutch with the bidirectional hydraulic pump/motor, cross-over connection safety valve group, repairing module, HM Hydraulic Motor in the closed circuit, HM Hydraulic Motor is connected with load, bidirectional hydraulic pump/motor output shaft is connected cross-over connection hydraulic accumulation energy device between the major loop of repairing module and HM Hydraulic Motor by second clutch with flywheel shaft in the energy accumulation device for fly wheel.
Described energy accumulation device for fly wheel is a power-transfer clutch and a flywheel of serial connection;
Described safety valve group is that two electromagnetic relief valve serial connections form; The oil outlet of two electromagnetic relief valves connects fuel tank;
Described hydraulic accumulation energy device comprises a hydraulic energy control cock, a high pressure accumulator and a low pressure accumulator, the epicoele oil outlet of bidirectional hydraulic pump/motor is connected with the P mouth of hydraulic energy control cock, the cavity of resorption oil outlet of bidirectional hydraulic pump/motor is connected with the O mouth of hydraulic energy control cock, the oil outlet of high pressure accumulator is connected with the A mouth of hydraulic energy control cock, and the oil outlet of low pressure accumulator is connected with the B mouth of hydraulic energy control cock.
Described bidirectional hydraulic pump/motor is quantitative pump/motor or pump/motor;
Described HM Hydraulic Motor is fixed displacement motor or variable-dis-placement motor;
Described hydraulic energy control cock is the 3-position 4-way direction valve, can be apportioning valve, also can servovalve or high-speed switch valve.
Compare with existing hydraulic hybrid loop, the beneficial effect that the utlity model has is:
(1) flywheel and hydraulic accumulating device associating energy storage.Add flywheel, improve the specific energy of hydraulic accumulating device, make the specific energy of associating closed-center system larger than independent hydraulic accumulating device.
(2) valve control hydraulic accumulating device.Capacity adjusting valve ratio or servocontrol can be regulated the speed that hydraulic accumulating device discharges fluid, improve the driving driveability of vehicle.In addition, capacity adjusting valve and energy storage also can consist of the self adaptation accumulator loop, the absorption system fluid pulsation.
Description of drawings
Fig. 1 is system architecture principle schematic of the present utility model;
Fig. 2 is the structure principle chart of embodiment;
Fig. 3 is the braking of embodiment---machine liquid associating energy reclaims principle;
Fig. 4 is the driving of embodiment---machine liquid associating energy recycling principle.
EM among the figure: driving engine; CL1: driving engine is connected power-transfer clutch with the bidirectional hydraulic pump; PM1: bidirectional hydraulic pump/motor; CL2: the bidirectional hydraulic pump/motor is connected power-transfer clutch with flywheel; FL1: flywheel; L1: epicoele loop; L2: cavity of resorption loop; RV1: the first by pass valve; RV2: the second by pass valve; DV: 3-position 4-way direction valve; HA: high pressure accumulator; LA: low pressure accumulator; PM2: HM Hydraulic Motor.PM3: slippage pump; RV3: the 3rd by pass valve; M: repairing electrical motor.
The specific embodiment
As shown in Figure 2, a kind of hybrid power loop of machine liquid associating energy regeneration comprises driving engine EM, bidirectional hydraulic pump/motor PM1, energy accumulation device for fly wheel, safety valve group, repairing module, hydraulic accumulation energy device, HM Hydraulic Motor PM2.Driving engine EM output shaft is connected with the input shaft of first clutch CL1, the output shaft of first clutch CL1 is connected with the input shaft of bidirectional hydraulic pump/motor PM1, the output shaft of bidirectional hydraulic pump/motor PM1 is connected with the input shaft of second clutch CL2, the output shaft of second clutch CL2 is connected with flywheel FL1, cross-over connection safety valve group, repairing module, HM Hydraulic Motor in the closed circuit, HM Hydraulic Motor PM2 is connected with load FL2, cross-over connection hydraulic accumulation energy device between the major loop of repairing module and HM Hydraulic Motor.
Described safety valve group is that two by pass valve serial connections form; The first by pass valve RV1 is connected fuel tank with the oil outlet of the second by pass valve RV2;
Described hydraulic accumulation energy device comprises a hydraulic energy control cock, a high pressure accumulator and a low pressure accumulator, the epicoele oil outlet of bidirectional hydraulic pump is connected with the P mouth of hydraulic energy control cock, the cavity of resorption oil outlet of bidirectional hydraulic pump is connected with the O mouth of hydraulic energy control cock, the oil outlet of high pressure accumulator is connected with the A mouth of hydraulic energy control cock, and the oil outlet of low pressure accumulator is connected with the B mouth of hydraulic energy control cock.
Described repairing module is comprised of two check valves, the 3rd by pass valve RV3, slippage pump PM3, repairing motor M and fuel tank.
Described bidirectional hydraulic pump/motor PM1 is quantitative pump/motor or pump/motor;
Described HM Hydraulic Motor PM2 is fixed displacement motor or variable-dis-placement motor;
Described hydraulic energy control cock DV is the 3-position 4-way direction valve, can be proportional direction valve, also can be servovalve or high-speed switch valve;
By control bidirectional hydraulic pump/motor PM1 and HM Hydraulic Motor PM2, electric clutch CL1 and CL2, direction valve DV, system can work in two kinds of mode of operations: drive or braking.
Under the drive pattern, driving-energy passes to load FL2 by driver element (EM, flywheel FL1 or hydraulic accumulating device HA); Otherwise under braking mode, braking energy is reclaimed by the machine liquid associating energy-storage travelling wave tube that flywheel and energy storage consist of.
(1) braking: energy recovery operation pattern
Machine liquid associating energy shown in Figure 3 reclaims hydraulic hybrid drive system and can reclaim the load inertia kinetic energy by three kinds of modes: only reclaim with energy storage, only with flywheel recovery and energy storage and flywheel combined recovery, principle is respectively such as Fig. 3 (a), Fig. 3 (b), (direction of arrow represents that fluid flows among the figure) shown in Fig. 3 (c).During braking, HM Hydraulic Motor PM2 plays a part Hydraulic Pump, and bidirectional hydraulic pump/motor PM1 plays a part HM Hydraulic Motor.The discharge capacity of regulator solution pressure motor PM2, the rotating speed of HM Hydraulic Motor PM2 output shaft and torque can be conditioned.
1, the energy based on hydraulic accumulating device reclaims.
In this manner, the electromagnet CV2 of direction valve gets electric, and first clutch CL1 disconnects, and the discharge capacity of bidirectional hydraulic pump/motor PM1 is set to zero, and fluid is from low pressure accumulator LP to high pressure accumulator HP.This mode is applicable in the less situation of rechargeable energy (car brakeing energy).
2, the energy based on flywheel reclaims.
In this manner, first clutch CL1 disconnects, and second clutch CL2 engages, and direction valve DV is in meta.Braking energy is reclaimed by flywheel FL1.This mode is applicable in the larger situation of rechargeable energy (car brakeing energy).
3, the energy based on hydraulic accumulating device and flywheel reclaims.
In this manner, first clutch CL1 disconnects, and second clutch CL2 engages, and the electromagnet CV2 of direction valve gets electric.Hydraulic accumulating device and flywheel FL1 combined recovery braking energy.The discharge capacity of control bidirectional hydraulic pump/motor PM1 so that the pressure in the L2 pipeline keeps within the specific limits, provides back pressure to braking.
(2) drive: braking energy recycling mode of operation
Fig. 4 is the drive pattern (direction of arrow represents that fluid flows among the figure) of machine liquid mixed drive, and two large factor---flow and pressure according to hydraulic drive can be divided into flow coupled modes and coupling pressure mode.
1, flow coupling
Shown in Fig. 4 (a), under this type of drive, direction valve is in meta.When first clutch CL1 engages and second clutch CL2 when disconnecting, load is driven by driving engine EM, and when first clutch CL1 disconnects and second clutch CL2 when engaging, load is driven by flywheel FL1.At this moment, load speed is regulated by the discharge capacity of bidirectional hydraulic pump/motor PM1, and the pressure of L1 pipeline is determined by load.
2, coupling pressure
Shown in Fig. 4 (b), in this manner, the electromagnet of direction valve is in the CV1 position, regulates the discharge capacity of PM2 to adapt to speed under load, and the pressure of L1 pipeline is determined by the demand torque of HM Hydraulic Motor PM2.
Claims (7)
1. the hybrid power loop of machine liquid associating energy regeneration, comprise driving engine, bidirectional hydraulic pump/motor, energy accumulation device for fly wheel, safety valve group, repairing module, hydraulic accumulation energy device, HM Hydraulic Motor, it is characterized in that: engine output shaft is connected by the input shaft of power-transfer clutch with the bidirectional hydraulic pump/motor, cross-over connection safety valve group, repairing module, HM Hydraulic Motor in the closed circuit, HM Hydraulic Motor is connected with load, bidirectional hydraulic pump/motor flywheel driven closed-center system, cross-over connection hydraulic accumulation energy device between the major loop of repairing module and HM Hydraulic Motor.
2. the hybrid power loop of machine liquid associating energy regeneration according to claim 1 is characterized in that: a described energy accumulation device for fly wheel power-transfer clutch and flywheel for being connected in series.
3. the hybrid power loop of machine liquid associating energy regeneration according to claim 1 is characterized in that: described safety valve group is that two electromagnetic relief valves serial connections form; The oil outlet of two electromagnetic relief valves connects fuel tank.
4. the hybrid power loop of machine liquid associating energy regeneration according to claim 1, it is characterized in that: described hydraulic accumulation energy device comprises a hydraulic energy control cock, a high pressure accumulator and a low pressure accumulator, the epicoele oil outlet of bidirectional hydraulic pump/motor is connected with the P mouth of hydraulic energy control cock, the cavity of resorption oil outlet of bidirectional hydraulic pump/motor is connected with the O mouth of hydraulic energy control cock, the oil outlet of high pressure accumulator is connected with the A mouth of hydraulic energy control cock, and the oil outlet of low pressure accumulator is connected with the B mouth of hydraulic energy control cock.
5. the hybrid power loop of machine liquid associating energy regeneration according to claim 1, it is characterized in that: described bidirectional hydraulic pump/motor is quantitative pump/motor or pump/motor.
6. the hybrid power loop of machine liquid associating energy regeneration according to claim 1, it is characterized in that: described HM Hydraulic Motor is fixed displacement motor or variable-dis-placement motor.
7. the hybrid power loop of machine liquid associating energy regeneration according to claim 4, it is characterized in that: described hydraulic energy control cock is the 3-position 4-way direction valve, can be apportioning valve, also can be servovalve or high-speed switch valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012205061332U CN202896268U (en) | 2012-09-28 | 2012-09-28 | Hybrid power return circuit based on mechanical and hydraulic combined energy regeneration |
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| CN2012205061332U CN202896268U (en) | 2012-09-28 | 2012-09-28 | Hybrid power return circuit based on mechanical and hydraulic combined energy regeneration |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102897012A (en) * | 2012-09-28 | 2013-01-30 | 杭州电子科技大学 | Hybrid power loop based on machine-hydraulic joint energy regeneration |
| CN103693034A (en) * | 2013-07-15 | 2014-04-02 | 南京工程学院 | Electro-hydraulic proportional valve control pump/motor hydraulic power assisted system of electric automobile |
| CN103950389A (en) * | 2014-01-20 | 2014-07-30 | 南京工程学院 | Electric vehicle hydraulic control pump/motor power assisting system |
| CN104260632A (en) * | 2014-10-21 | 2015-01-07 | 天津港集装箱码头有限公司 | Multistage hydraulic energy storage hybrid power system |
| CN104963903A (en) * | 2015-04-12 | 2015-10-07 | 吉林大学 | Hydraulic flywheel accumulator system based on largest energy accumulation rate, and control method thereof |
| CN108386531A (en) * | 2018-02-12 | 2018-08-10 | 铁建重工新疆有限公司 | A kind of gear oil circulating system and its control method |
| CN113482992A (en) * | 2021-07-12 | 2021-10-08 | 山东理工大学 | Fluid flywheel energy storage system |
-
2012
- 2012-09-28 CN CN2012205061332U patent/CN202896268U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102897012A (en) * | 2012-09-28 | 2013-01-30 | 杭州电子科技大学 | Hybrid power loop based on machine-hydraulic joint energy regeneration |
| CN102897012B (en) * | 2012-09-28 | 2015-09-02 | 杭州电子科技大学 | A kind of hybrid power loop based on machine liquid associating energy regeneration |
| CN103693034A (en) * | 2013-07-15 | 2014-04-02 | 南京工程学院 | Electro-hydraulic proportional valve control pump/motor hydraulic power assisted system of electric automobile |
| CN103950389A (en) * | 2014-01-20 | 2014-07-30 | 南京工程学院 | Electric vehicle hydraulic control pump/motor power assisting system |
| CN103950389B (en) * | 2014-01-20 | 2016-02-10 | 南京工程学院 | Electronlmobil hydraulic control pump/motor force aid system |
| CN104260632A (en) * | 2014-10-21 | 2015-01-07 | 天津港集装箱码头有限公司 | Multistage hydraulic energy storage hybrid power system |
| CN104963903A (en) * | 2015-04-12 | 2015-10-07 | 吉林大学 | Hydraulic flywheel accumulator system based on largest energy accumulation rate, and control method thereof |
| CN108386531A (en) * | 2018-02-12 | 2018-08-10 | 铁建重工新疆有限公司 | A kind of gear oil circulating system and its control method |
| CN113482992A (en) * | 2021-07-12 | 2021-10-08 | 山东理工大学 | Fluid flywheel energy storage system |
| CN113482992B (en) * | 2021-07-12 | 2022-11-25 | 山东理工大学 | Fluid flywheel energy storage system |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20150928 |
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| EXPY | Termination of patent right or utility model |