CN208703054U - High efficiency drive system in a kind of full speed range for vehicle - Google Patents
High efficiency drive system in a kind of full speed range for vehicle Download PDFInfo
- Publication number
- CN208703054U CN208703054U CN201821344274.2U CN201821344274U CN208703054U CN 208703054 U CN208703054 U CN 208703054U CN 201821344274 U CN201821344274 U CN 201821344274U CN 208703054 U CN208703054 U CN 208703054U
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- hydraulic
- valve
- motor
- vehicle
- electromagnetic directional
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Abstract
The utility model belongs to vehicle traction technical field, discloses high efficiency drive system in a kind of full speed range for vehicle, there is low efficiencys for solving the problems, such as existing electro-hydraulic hybrid drive system.The utility model includes variable-frequency motor, hydraulic pump, hydraulic motor, epicyclic gearbox and the drive shaft of front and back two, the output shaft of variable-frequency motor is connect with epicyclic gearbox, first clutch is provided between epicyclic gearbox and wherein a drive shaft, epicyclic gearbox is equipped with second clutch, second clutch warp beam is connected with rotate gear, rotate gear is connected with hydraulic pump, and hydraulic pump is connected with hydraulic motor, the output shaft of hydraulic motor and another driving axis connection through hydraulic valve block.
Description
Technical field
The utility model belongs to vehicle traction technical field, and in particular to efficiently drives in a kind of full speed range for vehicle
Dynamic system.
Background technique
Electric vehicle has zero-emission, low noise and other advantages, and developing electrokinetic technique can effectively solve the problem that energy source of car and environment
The problems such as pollution, is beneficial to energy conservation emission reduction, and electric vehicle haves the characteristics that start and stop are frequent in use, and electric motor starting
When the dash current that generates be 5-8 times of rated current, serious to damage motor and battery, this is also service lifetime of accumulator
A key factor short, cruising ability is poor.
There is electro-hydraulic hybrid drive system for the technology prior art, such as application No. is 201711000392.1
Utility model patent discloses a kind of electro-hydraulic hybrid drive system of vehicle, including electric drive subsystem in series, hydraulic
Drives subsystem and rear wheel drive subsystem；Hydraulic-driven subsystem includes closed circuit, repairing overflow module and hydraulic auxiliary
Module；Closed circuit is working connection；Repairing overflow module is used to limit the safe pressure of working connection and is working connection makeup oil liquid；
The heavy duty that hydraulic supplementary module is used to complete the assistant starting and entire vehicle of driving motor accelerates and the regeneration of braking energy
Function；It further include control system, control system controls the collection and each variable member of control of sensor signal in entire drive system
Part；Electric drive subsystem includes sequentially connected battery, inverter, driving motor, the first rotary speed torque sensor and
One electromagnetic clutch；The variable pump of closed circuit is connected with the first electromagnetic clutch, and the second hydraulic fluid port of variable pump is connected to main transformer
The second hydraulic fluid port of motor is measured, the first hydraulic fluid port of master variable motor is connected to the P mouth of the 5th two-position two-way electromagnetic directional valve, and the five or two
The A mouth of two electric change valves of position is connected to the P mouth of the 4th two-position two-way electromagnetic directional valve, the 4th two-position two-way electromagnetic directional valve
A mouth be connected to the first hydraulic fluid port of variable pump；The repairing motor driven slippage pump of repairing overflow module, the oil inlet of slippage pump with
Fuel tank is connected, and the oil outlet of slippage pump is connected with the oil inlet of oil filter, the oil outlet of oil filter and meanwhile with repairing overflow valve
Oil inlet, the oil inlet of the first check valve, the oil outlet of the first overflow valve, the oil inlet of second one-way valve, second overflow valve
Oil outlet, the P mouth of the first two-position two-way electromagnetic directional valve, the first hydraulic fluid port of auxiliary variable motor are connected, and repairing overflow valve goes out
Hydraulic fluid port is connected with fuel tank.
The technology reduces motor peak torque and power by hydraulic energy auxiliary drive, to mitigate the weight of driving motor
Amount and volume improve vehicle course continuation mileage, are realized using hydraulic energy energy storage to electric motor starting, reduce electric motor starting electric current, reach
Improve the effect of service lifetime of accumulator and cruising ability.
But there is following technical problems in use for the drive system:
(1) entire control piper due to layout designs it is not reasonable, cause control system tediously long, eventually lead to control and adjust
The section response time is long, control lag.
(2) at present for electro-hydraulic mixed dynamic drive system on the market, either two drive or 4-wheel driven car, the driving of use
Mode be all using electro-hydraulic combination drive by the way of driven, although this mode can be by way of adjusting hydraulic pump
It is adjusted, but even if improve the service life of battery to guarantee electrically driven (operated) efficient operation, but will affect liquid
The efficiency of press pump, to influence entire drive efficiency.
Utility model content
There is low efficiencys in order to solve the problems, such as existing electro-hydraulic hybrid drive system for the utility model, and provide a kind of use
In high efficiency drive system in the full speed range of vehicle, have the advantages of motor driven, also have the advantages of electro-hydraulic driving, simultaneously also
Have the advantages of electro-hydraulic combination drive, can guarantee that drive system is in the state of efficient operation in full speed range.
In order to solve the technical problem, the technical scheme adopted by the utility model is
High efficiency drive system in a kind of full speed range for vehicle, which is characterized in that including variable-frequency motor, hydraulic pump,
Hydraulic motor, epicyclic gearbox and the drive shaft of front and back two, the output shaft of variable-frequency motor are connect with epicyclic gearbox, planetary gear
It is provided with first clutch between case and wherein a drive shaft, epicyclic gearbox is equipped with second clutch, second clutch
Warp beam is connected with rotate gear, and rotate gear is connected with hydraulic pump, and hydraulic pump is connected with hydraulic motor, hydraulic horse through hydraulic valve block
The output shaft reached and another driving axis connection.
It is provided in drive shaft for the reduction gearbox with first clutch axis connection or with hydraulic motor axis connection.
High pressure accumulator and low pressure accumulator are communicated on the hydraulic valve block.
The hydraulic valve block includes 3-position 4-way electro-hydraulic proportional valve, the first two-position two-way electromagnetic directional valve, the two or two two
Electric change valve and three-position four-way electromagnetic directional valve, the A mouth of 3-position 4-way electro-hydraulic proportional valve and B mouthfuls respectively with hydraulic motor
Two hydraulic fluid port connections, the P mouth of 3-position 4-way electro-hydraulic proportional valve are connected in parallel to the first two-position two-way electromagnetic directional valve, 3-position 4-way
The P mouth and overflow valve of solenoid directional control valve, the first two-position two-way electromagnetic directional valve are connected with high pressure accumulator, the electro-hydraulic ratio of 3-position 4-way
The T mouth of example valve is connected in parallel to the T mouth of low pressure accumulator and three-position four-way electromagnetic directional valve, the A of three-position four-way electromagnetic directional valve
Mouthful and B mouthfuls be connected to respectively with two hydraulic fluid ports of hydraulic pump.
The overflow valve is connected in series with the second two-position two-way electromagnetic directional valve, the second two-position two-way electromagnetic directional valve with it is low
Press accumulator connection.
The course of work of the utility model is:
(1) when vehicle launch, the oil liquid in high pressure accumulator enters three four through the first two-position two-way electromagnetic directional valve
In electric change valve, the oil liquid in three-position four-way electromagnetic directional valve is entered in hydraulic motor, hydraulic motor and its phase interworking
The drive shaft turns of conjunction, so that vehicle obtains certain speed；
(2) under lower-speed state: variable-frequency motor drives epicyclic gearbox, second clutch closure, variable-frequency motor band hydrodynamic pressure
Pump work, hydraulic pump drive hydraulic motor work, and wherein a drive shaft is rotated for driving, by second clutch, hydraulic
The adjusting of pump, valve block and hydraulic motor, so that even if under the low speed it is also ensured that motor is in efficient operation state；
(3) under fast state: an axis movement is only driven by variable-frequency motor and first clutch, it is required at this time to overcome
Resistance carry out very little, variable-frequency motor runs at high speed in high efficient district.
Compared with prior art, the utility model has the following beneficial effects:
High efficiency drive system in the full speed range for vehicle of the utility model, vehicle in the process of moving, Ke Yigen
It is selective by the way of hydraulic-driven, electric drive, electro-hydraulic driving and electro-hydraulic combination drive according to traffic information, so that this reality
With novel the advantages of having the advantages of motor driven, also having the advantages of electro-hydraulic driving, while being also equipped with electro-hydraulic combination drive；And
And it can guarantee that motor is in efficacious workaround under lower-speed state and fast state, and in the process of moving, vehicle can
To be driven using a wherein drive shaft, to reduce the resistance in driving process, the efficiency of motor is further increased.
High efficiency drive system in the full speed range for vehicle of the utility model, is arranged, entirely by reasonable pipeline
In system, a 3-position 4-way electro-hydraulic proportional valve, two two-position two-way electromagnetic directional valves, a 3-position 4-way electromagnetism only only used
The control of various liquid flowings can be completed in reversal valve and an overflow valve, compared with the prior art interminable fluid pressure line cloth
It sets, enormously simplifies structure, so as to shorten the time of hydraulic line response, improve the timeliness of control.
The hydraulic valve block of the utility model can facilitate adjusting liquid by electro-hydraulic proportional valve, three-position four-way electromagnetic directional valve
The working condition of pressure motor, so that efficacious workaround is in guarantee variable-frequency motor, so that hydraulic motor is in efficient work
Make state, to improve drive efficiency.
Detailed description of the invention
Fig. 1 is the system principle diagram of the utility model；
Fig. 2 is the functional block diagram of the hydraulic valve block of the utility model；
Marked in the figure: 1, variable-frequency motor, 2, hydraulic pump, 3, hydraulic motor, 4, epicyclic gearbox, 5, drive shaft, 6, first
Clutch, 7, second clutch, 8, rotate gear, 9, hydraulic valve block, 10, high pressure accumulator, 11, low pressure accumulator, 12, deceleration
Case, 91,3-position 4-way electro-hydraulic proportional valve, the 92, first two-position two-way electromagnetic directional valve, the 93, second two-position two-way electromagnetic directional valve,
94, three-position four-way electromagnetic directional valve, 95, overflow valve.
Specific embodiment
Below with reference to embodiment, the utility model will be further described, and described embodiment is only that this is practical new
Type a part of the embodiment is not whole embodiment.Based on the embodiments of the present invention, the ordinary skill people of this field
Member's other embodiments used obtained without making creative work, belong to the protection model of the utility model
It encloses.
In conjunction with attached drawing, high efficiency drive system in the full speed range for vehicle of the utility model, including variable-frequency motor 1,
Hydraulic pump 2, hydraulic motor 3, epicyclic gearbox 4 and the drive shaft 5 of front and back two, the output shaft and epicyclic gearbox 4 of variable-frequency motor 1
Connection, is provided with first clutch 6 between epicyclic gearbox 4 and wherein a drive shaft 5, epicyclic gearbox 5 is equipped with second
Clutch 7,7 warp beam of second clutch are connected with rotate gear 8, and rotate gear 8 is connected with hydraulic pump 2, wherein when the second clutch
Device 7 be closed when, variable-frequency motor drive epicyclic gearbox rotation, epicyclic gearbox through second clutch drive rotate gear into
Row rotation, for rotate gear to drive hydraulic pump to work, hydraulic pump 2 is connected with hydraulic motor 3, hydraulic motor 3 through valve block 9
Output shaft connect with another drive shaft 5.Wherein, epicyclic gearbox, hydraulic pump, hydraulic motor, variable-frequency motor belong to existing
There are technical products, those skilled in the art can be appreciated and understood that details are not described herein.
Be provided in drive shaft 5 for first clutch axis connection or with the reduction gearbox 12 of hydraulic motor axis connection,
Reduction gearbox also belongs to prior art products, and those skilled in the art can be appreciated and understood that details are not described herein.
High pressure accumulator 11 and low pressure accumulator 10, high pressure accumulator and low pressure accumulation of energy are communicated in the valve block 9
Device is run for saving the oil pressure that hydraulic motor exports convenient for starting vehicle by high pressure accumulator.
As a kind of preferred mode of the utility model, being able to carry out when the utility model can also be by vehicle braking
Recycling, energy is recovered in high pressure accumulator or low pressure accumulator, such as set liquid for the hydraulic motor of the utility model
Pump/motor is pressed, so that being in pump state when vehicle braking, oil liquid is subjected to pressurization and is input to high pressure accumulator and low pressure accumulation of energy
It is recycled in device, those skilled in the art can be appreciated and understood that details are not described herein.
The course of work of the utility model is:
(1) when vehicle launch, the oil liquid in high pressure accumulator enters three four through the first two-position two-way electromagnetic directional valve
In electric change valve, the oil liquid in three-position four-way electromagnetic directional valve is entered in hydraulic motor, hydraulic motor and its phase interworking
The drive shaft turns of conjunction, so that vehicle obtains certain speed；
(2) under lower-speed state: variable-frequency motor drives epicyclic gearbox, second clutch closure, variable-frequency motor band hydrodynamic pressure
Pump work, hydraulic pump drive hydraulic motor work, and wherein a drive shaft is rotated for driving, by second clutch, hydraulic
The adjusting of pump, valve block and hydraulic motor, so that even if under the low speed it is also ensured that motor is in efficient operation state；
(3) under fast state: an axis movement is only driven by variable-frequency motor and first clutch, it is required at this time to overcome
Resistance carry out very little, variable-frequency motor runs at high speed in high efficient district.
When accelerating ramp up, first clutch and second clutch are closed at, and electro-hydraulic by 3-position 4-way
Proportioning valve carries out flow adjusting, to realize electro-hydraulic while driving purpose so that variable-frequency motor and hydraulic motor all in
One high efficient district.
In conclusion high efficiency drive system in the full speed range for vehicle of the utility model, vehicle is in driving process
In, it can be selective by the way of hydraulic-driven, electric drive, electro-hydraulic driving and electro-hydraulic combination drive according to traffic information,
So that the utility model has the advantages of motor driven, also have the advantages of electro-hydraulic driving, while being also equipped with electro-hydraulic combination drive
The advantages of；And it can guarantee that motor is in efficacious workaround under lower-speed state and fast state, and in driving process
In, vehicle can be driven using a wherein drive shaft, to reduce the resistance in driving process, further increase motor
Efficiency.
As another improvement of the utility model, the hydraulic valve block 9 of the utility model includes the electro-hydraulic ratio of 3-position 4-way
Example valve 91, the first two-position two-way electromagnetic directional valve 92, the second two-position two-way electromagnetic directional valve 93 and three-position four-way electromagnetic directional valve
94, the A mouth of 3-position 4-way electro-hydraulic proportional valve 91 and B mouthfuls are connected to two hydraulic fluid ports of hydraulic motor respectively, the electro-hydraulic ratio of 3-position 4-way
The P mouth of example valve 91 is connected in parallel to the first two-position two-way electromagnetic directional valve 92, the P mouth of three-position four-way electromagnetic directional valve 94 and overflow
Valve, the first two-position two-way electromagnetic directional valve 92 are connected with high pressure accumulator 11, and the T mouth of 3-position 4-way electro-hydraulic proportional valve 91 is in parallel even
It is connected to the T mouth of low pressure accumulator 10 and three-position four-way electromagnetic directional valve 94, the A mouth of three-position four-way electromagnetic directional valve 94 and B mouthfuls divide
It is not connected to two hydraulic fluid ports of hydraulic pump 2.
The overflow valve 95 is connected in series with the second two-position two-way electromagnetic directional valve 93, the second two-position two-way electromagnetic directional valve
93 are connected to low pressure accumulator 10.
High efficiency drive system in the full speed range for vehicle of the utility model, is arranged, entirely by reasonable pipeline
In system, a 3-position 4-way electro-hydraulic proportional valve, two two-position two-way electromagnetic directional valves, a 3-position 4-way electromagnetism only only used
The control of various liquid flowings can be completed in reversal valve and an overflow valve, compared with the prior art interminable fluid pressure line cloth
It sets, enormously simplifies structure, so as to shorten the time of hydraulic line response, improve the timeliness of control.
The hydraulic valve block of the utility model can facilitate adjusting liquid by electro-hydraulic proportional valve, three-position four-way electromagnetic directional valve
The working condition of pressure motor, so that efficacious workaround is in guarantee variable-frequency motor, so that hydraulic motor is in efficient work
Make state, to improve drive efficiency.
Claims (5)
1. high efficiency drive system in a kind of full speed range for vehicle, which is characterized in that including variable-frequency motor (1), hydraulic pump
(2), hydraulic motor (3), epicyclic gearbox (4) and the drive shaft (5) of front and back two, the output shaft and planet tooth of variable-frequency motor (1)
Roller box (4) connection, is provided with first clutch (6), planetary gear between epicyclic gearbox (4) and wherein a drive shaft (5)
Case (4) is equipped second clutch (7), and second clutch (7) warp beam is connected with rotate gear (8), and rotate gear is connected with liquid
Press pump (2), hydraulic pump (2) are connected with hydraulic motor (3) through hydraulic valve block (9), the output shaft of hydraulic motor (3) and another drive
Moving axis (5) connection.
2. high efficiency drive system in the full speed range according to claim 1 for vehicle, which is characterized in that drive shaft
(5) it is provided on for the reduction gearbox (12) with first clutch (6) axis connection or with hydraulic motor (3) axis connection.
3. high efficiency drive system in the full speed range according to claim 1 for vehicle, which is characterized in that described hydraulic
High pressure accumulator (11) and low pressure accumulator (10) are communicated in valve block (9).
4. high efficiency drive system in the full speed range according to claim 3 for vehicle, which is characterized in that described hydraulic
Valve block (9) includes 3-position 4-way electro-hydraulic proportional valve (91), the first two-position two-way electromagnetic directional valve (92), the second bi-bit bi-pass electromagnetism
Reversal valve (93) and three-position four-way electromagnetic directional valve (94), the A mouth of 3-position 4-way electro-hydraulic proportional valve and B mouthfuls respectively with hydraulic motor
The connection of two hydraulic fluid ports, the P mouth of 3-position 4-way electro-hydraulic proportional valve is connected in parallel to the first two-position two-way electromagnetic directional valve, three four
The P mouth and overflow valve of electric change valve, the first two-position two-way electromagnetic directional valve are connected with high pressure accumulator (11), 3-position 4-way
The T mouth of electro-hydraulic proportional valve is connected in parallel to the T mouth of low pressure accumulator (10) and three-position four-way electromagnetic directional valve, 3-position 4-way electromagnetism
The A mouth of reversal valve and B mouthfuls are connected to two hydraulic fluid ports of hydraulic pump respectively.
5. high efficiency drive system in the full speed range according to claim 4 for vehicle, which is characterized in that described second
Two-position two-way electromagnetic directional valve (93) is connected in series with overflow valve (95), the second two-position two-way electromagnetic directional valve and low pressure accumulator
(10) it is connected to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821344274.2U CN208703054U (en) | 2018-08-21 | 2018-08-21 | High efficiency drive system in a kind of full speed range for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821344274.2U CN208703054U (en) | 2018-08-21 | 2018-08-21 | High efficiency drive system in a kind of full speed range for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208703054U true CN208703054U (en) | 2019-04-05 |
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ID=65942959
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821344274.2U Expired - Fee Related CN208703054U (en) | 2018-08-21 | 2018-08-21 | High efficiency drive system in a kind of full speed range for vehicle |
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| Country | Link |
|---|---|
| CN (1) | CN208703054U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113879097A (en) * | 2021-09-15 | 2022-01-04 | 浙江大学 | Multi-mode electro-hydraulic hybrid power system |
-
2018
- 2018-08-21 CN CN201821344274.2U patent/CN208703054U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113879097A (en) * | 2021-09-15 | 2022-01-04 | 浙江大学 | Multi-mode electro-hydraulic hybrid power system |
| CN113879097B (en) * | 2021-09-15 | 2023-04-18 | 浙江大学 | Multi-mode electro-hydraulic hybrid power system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190405 Termination date: 20210821 |