CN107472010A - The electric oily connection in series-parallel of electric vehicle mixes drive system - Google Patents
The electric oily connection in series-parallel of electric vehicle mixes drive system Download PDFInfo
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- CN107472010A CN107472010A CN201710685589.7A CN201710685589A CN107472010A CN 107472010 A CN107472010 A CN 107472010A CN 201710685589 A CN201710685589 A CN 201710685589A CN 107472010 A CN107472010 A CN 107472010A
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- valve
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- way electromagnetic
- electromagnetic directional
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/10—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of fluid gearing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/12—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of electric gearing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Power Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a kind of electric oily connection in series-parallel of electric vehicle to mix drive system, including battery, inverter, motor, transfer case, quiet oil pressure actuated systems, the dynamic case of conjunction and reduction box, the battery is electrically connected by the inverter with the motor, the clutch end of the motor is connected with the power intake of the transfer case, the clutch end of the transfer case is connected by the quiet oil pressure actuated systems with the power intake for closing dynamic case, and the clutch end for closing dynamic case is inputted by the power of the reduction box and the electric vehicle to be connected；The electric oily connection in series-parallel of electric vehicle of the present invention mix drive system can realize electric vehicle quickly start, fast braking, the descending function such as at the uniform velocity, increasing the climbing capacity of vehicle simultaneously, drive system installed power can also be reduced, is advantageous to improve drive system economy.
Description
Technical field
The present invention relates to the electric oily connection in series-parallel of driver for vehicle, more particularly to a kind of electric vehicle to mix drive system.
Background technology
Rail vehicle for track traffic has traction, provides job platform, lifting carrying and provide interim power source
Deng work(.It is existing with the engineering truck such as railcar overwhelming majority using diesel engine as power source and be equipped with mechanical gear box (or fluid power become
Fast case), its drive system transmission efficiency is relatively low and low speed governor control characteristics is poor.Start during in order to meet that all operating modes are special and big
Ramp is run, and railcar is often equipped with heavy-duty motor, but will certainly so be reduced and caused railcar in the slow-speed of revolution, small-power
Drive-train efficiency is relatively low during operating mode, and economy is poor.Because power utilization effect is poor so that exhaust emission is serious, works as rail
When road car travels in subway or long Railway Tunnel, engineering staff's working environment extreme difference can be caused.
For the city electric car of road traffic, the regulation of its speed is that electric machine controller controls hand according to pedal signal, DRN
Handle signal changes traction electric machine rotating speed to realize.As railcar, speed is lower, and the rotating speed of traction electric machine is lower, and leads
The efficiency for drawing motor reduces with the reduction of rotating speed.If electric car is travelled in tick-over for a long time, can undoubtedly be imitated because of motor
Rate is relatively low and causes a large amount of energy losses.
In a word, want to reduce energy loss when electric vehicle is run at a low speed, save energy, must just improve vehicle traction
Drive system efficiency.
The content of the invention
The purpose of the present invention is that to solve the above problems and provides a kind of mixed drive of electric oily connection in series-parallel of electric vehicle
System.
The present invention is achieved through the following technical solutions above-mentioned purpose：
A kind of electric oily connection in series-parallel of electric vehicle mixes drive system, including battery, inverter, motor, transfer case, quiet oil pressure
Drive system, the dynamic case of conjunction and reduction box, the battery are electrically connected by the inverter with the motor, and the motor moves
Power output end is connected with the power intake of the transfer case, and the clutch end of the transfer case passes through the quiet oil pressure actuated
System is connected with the power intake for closing dynamic case, and the clutch end for closing dynamic case passes through the reduction box and the electricity
The power input connection of motor-car；
The quiet oil pressure actuated systems include pump group, valve group, groups of motors and accumulator group；
The pump group includes the first variable pump and the second variable pump；
The valve group includes the first check valve, the second check valve, the 3rd check valve, the 4th check valve, the 5th check valve, the
Six check valves, 3-position-3-way solenoid directional control valve, 3-position-3-way proportional reversing valve, the first overflow valve, the second overflow valve, the one or two
Two electric change valves, the second two-position two-way electromagnetic directional valve, the 3rd two-position two-way electromagnetic directional valve, the 4th bi-bit bi-pass electromagnetism
Reversal valve, the 5th two-position two-way electromagnetic directional valve, the 6th two-position two-way electromagnetic directional valve, the 7th two-position two-way electromagnetic directional valve,
First bi-bit bi-pass proportional reversing valve, the second bi-bit bi-pass proportional reversing valve and pressure-reducing valve；
The groups of motors includes variable displacement motor and auxiliary variable motor；
The accumulator group includes the first high pressure accumulator, the second high pressure accumulator and low pressure accumulator；
The oil-out of first variable pump connects with the oil inlet of first check valve, and second variable pump goes out
Hydraulic fluid port connects with the oil inlet of second check valve, the oil-out of first check valve and second check valve it is fuel-displaced
Mouth is connected to the oil-out of the pump group, and the oil inlet of the oil inlet of first variable pump and second variable pump is connected to
The oil inlet of the pump group, the oil-out and the 3-position-3-way ratio of the oil inlet of the pump group and the 3rd check valve change
Being connected to the A mouths of valve, the oil-out of first variable pump connects with the P mouths of the 3-position-3-way solenoid directional control valve, and described the
The oil-out of two variable pumps connects with the T mouths of the 3-position-3-way solenoid directional control valve, the A mouths of the 3-position-3-way solenoid directional control valve
The A mouths, described two or two of oil inlet with the 3rd check valve, the low pressure accumulator, first overflow valve respectively
The A mouths of two electric change valves, the A mouths of second overflow valve, the A mouths of the 7th two-position two-way electromagnetic directional valve and described
The oil-out of the oil-out connection of auxiliary variable motor, the oil-out of the pump group and the 4th check valve, described first are overflow
Flow the P mouths of valve, the P mouths of second two-position two-way electromagnetic directional valve, the P mouths of the 4th two-position two-way electromagnetic directional valve and institute
The P mouths connection of the 5th two-position two-way electromagnetic directional valve is stated, the oil inlet of the 4th check valve and the 3-position-3-way ratio are changed
Connected to the B mouths of valve, the P mouths of the P mouths of the 3-position-3-way proportional reversing valve and first two-position two-way electromagnetic directional valve and
The oil-out connection of 5th check valve, the A mouths of first two-position two-way electromagnetic directional valve and first high-voltage energy-storage
Device connects, the oil inlet of the 5th check valve and the oil inlet of the 6th check valve, the P mouths of second overflow valve and institute
State the A mouths connection of the 3rd two-position two-way electromagnetic directional valve, the P mouths and the described 4th 2 of the 3rd two-position two-way electromagnetic directional valve
The A mouths connection of the A mouths and the first bi-bit bi-pass proportional reversing valve of two electric change valves of position, the first bi-bit bi-pass ratio are changed
Connected to the P mouths of valve with the P mouths of the 7th two-position two-way electromagnetic directional valve and the oil-out of variable displacement motor, described five or two
The A mouths of two electric change valves connect with the oil inlet of the variable displacement motor, the oil-out of the 6th check valve and described the
The P mouths of six two-position two-way electromagnetic directional valves connect with the A mouths of pressure-reducing valve, the A mouths of the 6th two-position two-way electromagnetic directional valve with
The second high pressure accumulator connection, the B mouths of the pressure-reducing valve connect with the P mouths of the second bi-bit bi-pass proportional reversing valve,
The A mouths of the second bi-bit bi-pass proportional reversing valve connect with the oil inlet of the auxiliary variable motor, first variable pump
It is connected by the second electromagnetic clutch with the transfer case, second variable pump passes through the first electromagnetic clutch and the transfer
Case connect, the auxiliary variable motor by the 3rd electromagnetic clutch with it is described close move case be connected, the variable displacement motor with it is described
Close dynamic case connection.
Further, in addition to the first rotary speed torque sensor and the second rotary speed torque sensor, the first rotating speed moment of torsion
Sensor is arranged between the motor and the transfer case, second rotary speed torque sensor be arranged on it is described close dynamic case with
Between the reduction box.
Specifically, the 3-position-3-way solenoid directional control valve, the 3-position-3-way proportional reversing valve, first bi-bit bi-pass
It is solenoid directional control valve, second two-position two-way electromagnetic directional valve, the 3rd two-position two-way electromagnetic directional valve, described four or two
Two electric change valves, the 5th two-position two-way electromagnetic directional valve, the 6th two-position two-way electromagnetic directional valve, the described 7th
It is two-position two-way electromagnetic directional valve, the first bi-bit bi-pass proportional reversing valve, the second bi-bit bi-pass proportional reversing valve, described
Inverter, first rotary speed torque sensor, second rotary speed torque sensor, first variable pump, described second
The signal end of variable pump, the variable displacement motor and the auxiliary variable motor is electrically connected by the ECU of CAN and electric vehicle
Connect.
The beneficial effects of the present invention are：
The electric oily connection in series-parallel of electric vehicle of the present invention mix drive system can realize electric vehicle quickly start, fast braking,
The descending function such as at the uniform velocity, increase vehicle climbing capacity at the same time it can also reduce drive system installed power, be advantageous to improve
Drive system economy.
Started using the hydraulic accumulation energy stand-by motor in mixed drive system, can not only realize that motor quickly starts, but also
Dash current during electric motor starting can be eliminated, beneficial to the service life of electrical equipment and battery in raising drive system.
For this drive system is compared with electric vehicle conventional drive system, the ability of stepless time adjustment is also equipped with, to arbitrary target
Speed, the discharge capacity of motor speed, pump group and motor is reasonably set, variable pump work can be avoided while speed requirement is met
Make in low discharge capacity region, so as to reduce pump group loss, improve drive system transmission efficiency.
Brief description of the drawings
Fig. 1 is that the electric oily connection in series-parallel of electric vehicle of the present invention mixes the structural representation of drive system.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings：
As shown in figure 1, a kind of mixed drive system of the electric oily connection in series-parallel of electric vehicle of the present invention, including battery 1, inverter 2,
Motor 3, transfer case 5, quiet oil pressure actuated systems, conjunction dynamic case 36, reduction box 38, the first rotary speed torque sensor 4 and the second rotating speed
Torque sensor 37, battery 1 are electrically connected by inverter 2 with motor 3, the clutch end of motor 3 and the power of transfer case 5
Input is connected, and the clutch end of transfer case 5 is connected by quiet oil pressure actuated systems with closing the power intake of dynamic case 36, is closed
The clutch end of dynamic case 36 is inputted by the power of reduction box 38 and electric vehicle and connected, and the first rotary speed torque sensor 4 is set
Put between motor 3 and transfer case 5, the second rotary speed torque sensor 37 is arranged on conjunction and moved between case 36 and reduction box 38.
Quiet oil pressure actuated systems include pump group, valve group, groups of motors and accumulator group；
Pump group includes the first variable pump 9 and the second variable pump 10；
Valve group includes the first check valve 8, the second check valve 11, the 3rd check valve 13, the 4th check valve 14, the 5th check valve
16th, the 6th check valve 21,3-position-3-way solenoid directional control valve 12,3-position-3-way proportional reversing valve 15, the first overflow valve 17, second overflow
Flow valve 20, the first two-position two-way electromagnetic directional valve 18, the second two-position two-way electromagnetic directional valve 19, the 3rd bi-bit bi-pass electromagnetic switch
Valve 22, the 4th two-position two-way electromagnetic directional valve 23, the 5th two-position two-way electromagnetic directional valve 24, the 6th two-position two-way electromagnetic directional valve
28th, the 7th two-position two-way electromagnetic directional valve 29, the first bi-bit bi-pass proportional reversing valve 25, the second bi-bit bi-pass proportional reversing valve 27
With pressure-reducing valve 26；
Groups of motors includes variable displacement motor 33 and auxiliary variable motor 34；
Accumulator group includes the first high pressure accumulator 30, the second high pressure accumulator 31 and low pressure accumulator 32；
The oil-out of first variable pump 9 connects with the oil inlet of the first check valve 8, the oil-out of the second variable pump 10 and
The oil-out of the oil inlet connection of two check valves 11, the oil-out of the first check valve 8 and the second check valve 11 is connected to pump group
The oil inlet of oil-out, the oil inlet of the first variable pump 9 and the second variable pump 10 is connected to the oil inlet of pump group, the oil-feed of pump group
Mouthful connected with the oil-out of the 3rd check valve 13 and the A mouths of 3-position-3-way proportional reversing valve 15, the oil-out of the first variable pump 9 and
The P mouths connection of 3-position-3-way solenoid directional control valve 12, the oil-out of the second variable pump 10 and the T mouths of 3-position-3-way solenoid directional control valve 12
Connection, the oil inlet with the 3rd check valve 13, low pressure accumulator 32, first overflow the A mouths of 3-position-3-way solenoid directional control valve 12 respectively
Flow A mouths, the A mouths of the second two-position two-way electromagnetic directional valve 19, the A mouths of the second overflow valve 20, the 7th bi-bit bi-pass electromagnetism of valve 17
The A mouths of reversal valve 29 connect with the oil-out of auxiliary variable motor 34, the oil-out of the oil-out of pump group and the 4th check valve 14,
The P mouths of first overflow valve 17, the P mouths of the second two-position two-way electromagnetic directional valve 19, the P mouths of the 4th two-position two-way electromagnetic directional valve 23
Connected with the P mouths of the 5th two-position two-way electromagnetic directional valve 24, oil inlet and the 3-position-3-way proportional reversing valve of the 4th check valve 14
15 B mouths connection, the P mouths of 3-position-3-way proportional reversing valve 15 and the P mouths of the first two-position two-way electromagnetic directional valve 18 and the 5th list
Connected to the oil-out of valve 16, the A mouths of the first two-position two-way electromagnetic directional valve 18 connect with the first high pressure accumulator 30, and the 5th is single
Oil inlet, the P mouths and the 3rd bi-bit bi-pass electromagnetic switch of the second overflow valve 20 of oil inlet and the 6th check valve 21 to valve 16
The A mouths connection of valve 22, the P mouths of the 3rd two-position two-way electromagnetic directional valve 22 and the A mouths of the 4th two-position two-way electromagnetic directional valve 23 and
The A mouths connection of second bi-bit bi-pass proportional reversing valve 27, the P mouths and the 7th bi-bit bi-pass of the second bi-bit bi-pass proportional reversing valve 27
The P mouths of solenoid directional control valve 29 connect with the oil-out of variable displacement motor 33, the A mouths and variable of the 5th two-position two-way electromagnetic directional valve 24
The oil inlet connection of motor 33, the oil-out of the 6th check valve 21 and P mouths and the decompression of the 6th two-position two-way electromagnetic directional valve 28
The A mouths connection of valve 26, the A mouths of the 6th two-position two-way electromagnetic directional valve 28 connect with the second high pressure accumulator 31, the B of pressure-reducing valve 26
Mouth connects with the A mouths of the second bi-bit bi-pass proportional reversing valve, A mouths and the auxiliary variable motor of the second bi-bit bi-pass proportional reversing valve
34 oil inlet connection, the first variable pump 9 is connected by the second electromagnetic clutch 7 with transfer case 5, and the second variable pump 10 passes through the
One electromagnetic clutch 6 is connected with transfer case 5, and auxiliary variable motor 34 is connected by the 3rd electromagnetic clutch 35 with closing dynamic case 36,
Variable displacement motor is connected with closing dynamic case 36；
3-position-3-way solenoid directional control valve 12,3-position-3-way proportional reversing valve 15, the first two-position two-way electromagnetic directional valve 18,
Two two-position two-way electromagnetic directional valves 19, the 3rd two-position two-way electromagnetic directional valve 22, the 4th two-position two-way electromagnetic directional valve the 23, the 5th
Two-position two-way electromagnetic directional valve 24, the 6th two-position two-way electromagnetic directional valve 28, the 7th two-position two-way electromagnetic directional valve the 29, the 1st
Position two-way proportional reversing valve 18, the second bi-bit bi-pass proportional reversing valve 19, inverter 2, the first rotary speed torque sensor 4, second
Rotary speed torque sensor 37, the first variable pump 9, the second variable pump 10, the signal end of variable displacement motor 33 and auxiliary variable motor 34
Electrically connected by CAN with the ECU of electric vehicle.
The operation principle that the electric oily connection in series-parallel of electric vehicle of the present invention mixes drive system is as follows：
During vehicle launch, first disconnect the electric loop of motor 3, now, the first two-position two-way electromagnetic directional valve 18 is in the right side
Position, 3-position-3-way proportional reversing valve 15 are in left position open state, and the second two-position two-way electromagnetic directional valve 19 is in right position, and the 5th
Two-position two-way electromagnetic directional valve 24 is in bottom, and the first electromagnetic clutch 6, the second electromagnetic clutch 7 are in closure state.The
High-voltage oil liquid in one high pressure accumulator 30 drives through the first two-position two-way electromagnetic directional valve 18,3-position-3-way proportional reversing valve 15
Pump group, pump group is in motor operating conditions and drive motor 3 accelerates to start, and the oil return of pump group outlet is through the second bi-bit bi-pass electromagnetic switch
Valve 19 is returned in low pressure accumulator 32.After the first rotary speed torque sensor 4 detects that the rotating speed of motor 3 reaches rated speed,
Switch the first two-position two-way electromagnetic directional valve 18 and be in left position, connect the electric loop of motor 3, battery 1 can drive motor 3 just
Often operating.
Inrush current can not only be eliminated using the method for hydraulic accumulation energy assistant starting motor 3, improve electrical system
With the service life of battery 1, and it can realize that motor 3 is quick by adjusting the openings of sizes of 3-position-3-way proportional reversing valve 15
Start.
After the completion of the assistant starting of motor 3, for electric vehicle, each clear and definite target vehicle speed, pump group, groups of motors have
Corresponding displacement value.But when variable pump discharge capacity ratio (actual displacement/maximum pump discharge) be in small range (<0.5) when, it is driven effect
Rate is relatively low.In order to improve drive system transmission efficiency, ECU is by the work for going out two pumps in pump group according to target vehicle speed decision-making/unload
Lotus state, and the displacement value of working barrel is calculated, avoid work pump displacement value relatively low.
When electric vehicle is in low speed, 3-position-3-way solenoid directional control valve 12 is in bottom, (the maximum row of the first variable pump 9
Amount is small compared with the second variable pump 10) work, the off-load of the second variable pump 10, off-load fluid is through 3-position-3-way solenoid directional control valve the 12, the 3rd
Check valve 13 flows back to pump group oil inlet；When electric vehicle is in middling speed, 3-position-3-way solenoid directional control valve 12 is in upper, and second
Variable pump 10 works, and the off-load of the first variable pump 9, off-load fluid flows back to through 3-position-3-way solenoid directional control valve 12, the 3rd check valve 13
Pump group oil inlet；When electric vehicle is in high speed, 3-position-3-way solenoid directional control valve 12 is in middle position, and the first variable pump 9 works,
Second variable pump 10 works.3-position-3-way proportional reversing valve 15 in valve block is in middle position, the 5th two-position two-way electromagnetic directional valve
24 are in upper, and the 7th two-position two-way electromagnetic directional valve 29 is in upper, and the hydraulic oil of pump group outlet is through the 5th bi-bit bi-pass electricity
Magnetic reversal valve 24 drives variable displacement motor 33, variable displacement motor 33 fuel-displaced through the 7th two-position two-way electromagnetic directional valve 29, the 3rd check valve
13 return to pump group oil inlet, constitute a complete quiet oil pressure actuated systems, you can meet vehicle driving requirements.Meanwhile when
On the premise of guaranteed efficiency, if it is difficult to by adjusting pump group, the discharge capacity of groups of motors meet speed requirement, inverter can be passed through
The 2 fine setting rotating speeds of motor 3 are adjusted to complete speed.
Generally speaking, for compared with machine driving, electricity oil mixing static hydraulic drive system can realize stepless speed regulation, and lead to
The displacement value that variable pump is rationally set is crossed, pump group leakage, loss can be reduced, so as to improve drive system transmission efficiency.
When needing to climb heavy grade ramp in vehicle travel process, the first two-position two-way electromagnetic directional valve 18 is in right position,
3-position-3-way proportional reversing valve 15 is in right position open state, and the high-voltage oil liquid in the first high pressure accumulator 30 is through the one or two two
Converge jointly to drive variable displacement motor 33 with the fuel-displaced high pressure of pump group after electric change valve 18,3-position-3-way proportional reversing valve 15,
The size being open by adjusting 3-position-3-way proportional reversing valve 15 can control the size of accumulator group auxiliary flow.Meanwhile the 6th
Two-position two-way electromagnetic directional valve 28 is in right position, the second bi-bit bi-pass proportional reversing valve 27 is in upper open state, and second is high
The high-voltage oil liquid that accumulator 31 discharges is pressed through the 6th two-position two-way electromagnetic directional valve 28, pressure-reducing valve 26, the second bi-bit bi-pass ratio
The rear-guard dynamic auxiliary variable displacement motor 34 of reversal valve 27, auxiliary variable motor 34 exports fluid and is returned directly in low pressure accumulator 32, auxiliary
The flow of motor inlet fluid, pressure is helped to be adjusted by pressure-reducing valve 26, the second bi-bit bi-pass proportional reversing valve 27.Variable displacement motor
33 travel with common driving vehicle behind the dynamic interflow of case 36 of output torque ECDC of auxiliary variable motor 34 on heavy grade ramp.Store
Energy device auxiliary climbing can not only improve the climbing capacity of vehicle, but also can reduce drive system installed power, improve driving
System economy.
When electric vehicle descending or braking, the oily connection in series-parallel of electricity is mixed in drive system, and motor 3 powers off, the second bi-bit bi-pass electromagnetism
Reversal valve 19 is in right position, and the 7th two-position two-way electromagnetic directional valve 29 is in the next, at the second bi-bit bi-pass proportional reversing valve 27
In upper open state, the 4th two-position two-way electromagnetic directional valve 23 is in left position, and the 3rd two-position two-way electromagnetic directional valve 22 is in
Right position, the 6th two-position two-way electromagnetic directional valve 28 are in left position, and the second bi-bit bi-pass proportional reversing valve 27 is in bottom, the 3rd electricity
Magnet clutch 35 disconnects, and the first two-position two-way electromagnetic directional valve 18 is in right position, and 3-position-3-way proportional reversing valve 15 is in middle position
(valve port closing).Load driving system variable displacement motor 33 rotates, and fluid changes through the second bi-bit bi-pass electromagnetism in low pressure accumulator 32
Variable displacement motor 33 is flowed into valve 19, the 5th two-position two-way electromagnetic directional valve 24.Motor is in pump condition, and it exports hydraulic oil liquid stream
After the second bi-bit bi-pass proportional reversing valve 27, the 3rd two-position two-way electromagnetic directional valve 22, a portion high-voltage oil liquid is through
The first high pressure accumulator 30, another part high-voltage oil liquid warp are flowed into after five check valves 16, the first two-position two-way electromagnetic directional valve 18
The second high pressure accumulator 31 is flowed into after 6th check valve 21, the 6th two-position two-way electromagnetic directional valve 28.Based on this, vehicle descending or
Mechanical energy during braking will be stored in accumulator in a manner of pressure energy.By changing the second bi-bit bi-pass proportional reversing valve 27
Openings of sizes carrys out regulated variable motor 33 and exports the pressure of fluid, flow, and vehicle at the uniform velocity descending can be achieved.
If damped condition does not terminate also and accumulator topping up is full, switch the first bi-bit bi-pass electromagnetic switch in valve group
Valve 18 is in left position, and the 6th two-position two-way electromagnetic directional valve 28 is in left position, and 3-position-3-way proportional reversing valve 15 is in left position and opened
Mouth state, the first electromagnetic clutch 6, the second electromagnetic clutch 7 close, and the first variable pump 9, the second variable pump 10 are in motor work
Condition, the high-voltage oil liquid of the 3rd two-position two-way electromagnetic directional valve 22 outlet is through the 5th check valve 16,3-position-3-way proportional reversing valve 15
The anti-pump group drive motor 3 that drives generates electricity, and motor 3 is in generating operation mode.Based on this, vehicle descending or braking when mechanical energy will be with electricity
The form of energy is stored in battery 1.In a word, this New type driving system can reclaim braking energy, reduce loss, improve the energy
Utilization rate.
When vehicle idle is needed to accumulator topping up, the 4th two-position two-way electromagnetic directional valve 23 in valve group is in the right side
Position, the 5th two-position two-way electromagnetic directional valve 24 are in bottom, and the 3rd two-position two-way electromagnetic directional valve 22 is in right position, 3-position-3-way
Proportional reversing valve 15 is in middle position (valve port closing), and the first two-position two-way electromagnetic directional valve 18 is in right position, the second bi-bit bi-pass
Proportional reversing valve 27 is in the next (valve port closing), and the 6th two-position two-way electromagnetic directional valve 28 is in right position.Motor 3 drives pump group
Work, the fluid in low pressure accumulator 32 flows into pump group through the 3rd check valve 13, and the high-voltage oil liquid of pump group outlet is through the four or two
After two electric change valves 23, the 3rd two-position two-way electromagnetic directional valve 22, a part is through the 5th check valve 16, the first bi-bit bi-pass
Solenoid directional control valve 18 flows into the first high pressure accumulator 30, and another part is through the 6th check valve 21, the 6th bi-bit bi-pass electromagnetic switch
Valve 28 flows into the second high pressure accumulator 31.
Technical scheme is not limited to the limitation of above-mentioned specific embodiment, and every technique according to the invention scheme is done
The technology deformation gone out, each falls within protection scope of the present invention.
Claims (3)
1. a kind of electric oily connection in series-parallel of electric vehicle mixes drive system, it is characterised in that：Including battery, inverter, motor, transfer
Case, quiet oil pressure actuated systems, the dynamic case of conjunction and reduction box, the battery are electrically connected by the inverter with the motor, institute
The clutch end for stating motor is connected with the power intake of the transfer case, and the clutch end of the transfer case passes through described
Quiet oil pressure actuated systems are connected with the power intake for closing dynamic case, and the clutch end for closing dynamic case passes through the deceleration
The power input of case and the electric vehicle connects；
The quiet oil pressure actuated systems include pump group, valve group, groups of motors and accumulator group；
The pump group includes the first variable pump and the second variable pump；
The valve group includes the first check valve, the second check valve, the 3rd check valve, the 4th check valve, the 5th check valve, the 6th list
To valve, 3-position-3-way solenoid directional control valve, 3-position-3-way proportional reversing valve, the first overflow valve, the second overflow valve, the first bi-bit bi-pass
Solenoid directional control valve, the second two-position two-way electromagnetic directional valve, the 3rd two-position two-way electromagnetic directional valve, the 4th bi-bit bi-pass electromagnetic switch
Valve, the 5th two-position two-way electromagnetic directional valve, the 6th two-position two-way electromagnetic directional valve, the 7th two-position two-way electromagnetic directional valve, first
Bi-bit bi-pass proportional reversing valve, the second bi-bit bi-pass proportional reversing valve and pressure-reducing valve；
The groups of motors includes variable displacement motor and auxiliary variable motor；
The accumulator group includes the first high pressure accumulator, the second high pressure accumulator and low pressure accumulator；
The oil-out of first variable pump connects with the oil inlet of first check valve, the oil-out of second variable pump
Connected with the oil inlet of second check valve, the oil-out phase of the oil-out of first check valve and second check valve
It is linked as the oil-out of the pump group, the oil inlet of the oil inlet of first variable pump and second variable pump is connected to described
The oil inlet of pump group, oil-out and the 3-position-3-way proportional reversing valve of the oil inlet of the pump group with the 3rd check valve
The connection of A mouths, the oil-out of first variable pump connects with the P mouths of the 3-position-3-way solenoid directional control valve, second change
The oil-out of amount pump connects with the T mouths of the 3-position-3-way solenoid directional control valve, the A mouths difference of the 3-position-3-way solenoid directional control valve
A mouths, second bi-bit bi-pass of oil inlet, the low pressure accumulator, first overflow valve with the 3rd check valve
The A mouths of solenoid directional control valve, the A mouths of second overflow valve, the A mouths of the 7th two-position two-way electromagnetic directional valve and the auxiliary
The oil-out connection of variable displacement motor, oil-out, first overflow valve of the oil-out of the pump group and the 4th check valve
P mouths, the P mouths of second two-position two-way electromagnetic directional valve, the P mouths of the 4th two-position two-way electromagnetic directional valve and described
The P mouths connection of five two-position two-way electromagnetic directional valves, oil inlet and the 3-position-3-way proportional reversing valve of the 4th check valve
The connection of B mouths, P mouths of the P mouths of the 3-position-3-way proportional reversing valve and first two-position two-way electromagnetic directional valve and described
The oil-out connection of 5th check valve, the A mouths of first two-position two-way electromagnetic directional valve connect with first high pressure accumulator
It is logical, the oil inlet of the 5th check valve and the oil inlet of the 6th check valve, the P mouths of second overflow valve and described the
Three two-position two-way electromagnetic directional valves A mouths connection, the P mouths of the 3rd two-position two-way electromagnetic directional valve with described four or two two
The A mouths of the A mouths of electric change valve and the first bi-bit bi-pass proportional reversing valve connect, the first bi-bit bi-pass proportional reversing valve
P mouths connected with the P mouths of the 7th two-position two-way electromagnetic directional valve and the oil-out of variable displacement motor, the 5th bi-bit bi-pass
The A mouths of solenoid directional control valve connect with the oil inlet of the variable displacement motor, the oil-out and the described 6th 2 of the 6th check valve
Position the P mouths of two electric change valves connected with the A mouths of pressure-reducing valve, the A mouths of the 6th two-position two-way electromagnetic directional valve with it is described
Second high pressure accumulator connects, and the B mouths of the pressure-reducing valve connect with the P mouths of the second bi-bit bi-pass proportional reversing valve, described
The A mouths of second bi-bit bi-pass proportional reversing valve connect with the oil inlet of the auxiliary variable motor, and first variable pump passes through
Second electromagnetic clutch is connected with the transfer case, and second variable pump is connected by the first electromagnetic clutch and the transfer case
Connect, the auxiliary variable motor is connected by the 3rd electromagnetic clutch with the dynamic case of the conjunction, and the variable displacement motor moves with described close
Case connects.
2. the electric oily connection in series-parallel of electric vehicle according to claim 1 mixes drive system, it is characterised in that：Also include first turn
Fast torque sensor and the second rotary speed torque sensor, first rotary speed torque sensor are arranged on the motor and described point
Between dynamic case, second rotary speed torque sensor is arranged on described close and moved between case and the reduction box.
3. the electric oily connection in series-parallel of electric vehicle according to claim 2 mixes drive system, it is characterised in that：The 3-position-3-way
Solenoid directional control valve, the 3-position-3-way proportional reversing valve, first two-position two-way electromagnetic directional valve, second bi-bit bi-pass
It is solenoid directional control valve, the 3rd two-position two-way electromagnetic directional valve, the 4th two-position two-way electromagnetic directional valve, described five or two
Two electric change valves, the 6th two-position two-way electromagnetic directional valve, the 7th two-position two-way electromagnetic directional valve, described first
Bi-bit bi-pass proportional reversing valve, the second bi-bit bi-pass proportional reversing valve, the inverter, the first rotating speed torque sensing
Device, second rotary speed torque sensor, first variable pump, second variable pump, the variable displacement motor and described auxiliary
The signal end of variable displacement motor is helped to be electrically connected by CAN with the ECU of electric vehicle.
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| CN201710685589.7A CN107472010B (en) | 2017-08-11 | 2017-08-11 | Electric oil series-parallel hybrid drive system of electric vehicle |
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| CN201710685589.7A CN107472010B (en) | 2017-08-11 | 2017-08-11 | Electric oil series-parallel hybrid drive system of electric vehicle |
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