CN106042945B - A kind of electric car that mechanical differential is driven by pure electric power - Google Patents
A kind of electric car that mechanical differential is driven by pure electric power Download PDFInfo
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- CN106042945B CN106042945B CN201610344180.4A CN201610344180A CN106042945B CN 106042945 B CN106042945 B CN 106042945B CN 201610344180 A CN201610344180 A CN 201610344180A CN 106042945 B CN106042945 B CN 106042945B
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- type electric
- jack shaft
- electric car
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
- B60B35/12—Torque-transmitting axles
- B60B35/14—Torque-transmitting axles composite or split, e.g. half- axles; Couplings between axle parts or sections
-
- 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
- B60K1/00—Arrangement or mounting of electrical propulsion units
-
- 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
- B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
- B60K17/08—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing of mechanical type
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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
- B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential 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
- B60L50/00—Electric propulsion with power supplied within the vehicle
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Power Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The present invention discloses a kind of electric car that mechanical differential is driven by pure electric power comprising the drive shaft being distributed in pairs, the drive shaft being distributed in pairs are sequentially connected with the left side gear of differential mechanism and right side gear respectively；Drive shaft includes sequentially connected first jack shaft and the second jack shaft；In the direction far from differential mechanism, the first jack shaft and the second jack shaft are successively driven and are connected；Disc type electric machine controller, disc type electric machine and planetary reduction gear are disposed on first jack shaft；Disc type electric machine controller is connected with disc type electric machine, for controlling disc type electric machine；Disc type electric machine and planetary reduction gear are sequentially connected, and planetary reduction gear is rotated by the first jack shaft and the second jack shaft；The end of second jack shaft and the wheel drive of electric car connect.Above scheme can solve current electric car using traditional radial flux type motor and ladder parallel shaft (speed) reducer there is a problem of taking up space it is larger.
Description
Technical field
The present invention relates to the electronic vapour that electric car design field more particularly to a kind of mechanical differential are driven by pure electric power
Vehicle.
Background technique
Increasingly depleted and environmental pollution with resource gets worse, tap a new source of energy and reduce environmental pollution become work as
The main task of modern society.In such cases, the update of automobile is increasingly frequent, environmental pollution is smaller and power source more
Clean electric car is more and more common, and electric car is also the field that today's society puts forth effort development.
Currently, electric car includes pure electric automobile and hybrid vehicle.Either pure electric automobile still mixes dynamic
Power automobile is all made of traditional motor and traditional ladder parallel shaft (speed) reducer is combined to realize driving.Traditional motor is usually
The motor of radial flux type, such as AC permanent magnet synchronous motor, dc motor or AC asynchronous motor.We know
The motor reel in road, radial flux type is larger to installation dimension, and the power density and efficiency of such motor are lower.And ladder
Parallel shaft (speed) reducer occupies biggish axial space.It will be apparent that current electric car uses the motor of radial flux type
It will increase the volume of vehicle body in conjunction with the mode of ladder parallel shaft (speed) reducer.It will be apparent that it is stringent for space requirement, efficiency is higher
For electric car, the motor and ladder parallel shaft (speed) reducer of radial flux type will lead to other components of electric car
(such as battery) can not reasonable Arrangement, or even can not arrange.As it can be seen that the motor combination rank of the radial flux type using transmission
Terraced parallel shaft (speed) reducer can seriously affect the development and popularization of electric car.
Summary of the invention
The object of the present invention is to provide a kind of electric cars that mechanical differential is driven by pure electric power, to solve current electronic vapour
Vehicle there is a problem of taking up space larger using the motor and ladder parallel shaft (speed) reducer of traditional radial flux type.
To achieve the goals above, the present invention provides the following technical solutions：
A kind of electric car that mechanical differential is driven by pure electric power, including the drive shaft being distributed in pairs, what is be distributed in pairs is described
Drive shaft is sequentially connected with the left side gear of the differential mechanism and right side gear respectively；The drive shaft includes sequentially connected
First jack shaft and the second jack shaft；In the direction far from the differential mechanism, first jack shaft and the second driving
Semiaxis, which is successively driven, to be connected；Disc type electric machine controller, disc type electric machine and planetary reduction gear are disposed on first jack shaft；
The disc type electric machine controller is connected with the disc type electric machine, for controlling the disc type electric machine；The disc type electric machine with it is described
Planetary reduction gear transmission connection, the planetary reduction gear are rotated by first jack shaft and second jack shaft；
The end of second jack shaft is connect with the wheel drive of the electric car.
Preferably, the planet carrier of the planetary reduction gear in the drive shaft of the differential mechanism two sides and the differential
The shell of device is fixedly linked.
Preferably, in the direction of the left side gear close to the differential mechanism, the disc type electric machine controller, the disk
Formula motor and the planetary reduction gear are sequentially distributed in first jack shaft.
Preferably, the drive shaft be two pairs, two pairs of drive shafts be distributed in respectively the electric car preceding bridge and
Rear axle；One of the preceding bridge and the rear axle are connected with regeneration brake system.
Preferably, the electric car further includes air-conditioning assembly, the battery pack of the air-conditioning assembly and the electric car
Electrical connection.
Preferably, the disc type electric machine is single rotor list stator disc type motor, bimorph transducer single rotor disc type electric machine, birotor
Single stator disc type motor, surface-mount type disc type electric machine or built-in disc type electric machine.
Preferably, the disc type electric machine controller is circular sleeve structure, and is sheathed on first jack shaft；Institute
Disc type electric machine controller is stated to be connected with the battery pack, for by the DC inverter of the battery pack provided at alternating current,
To control the disc type electric machine work.
Preferably, the disc type electric machine controller further includes fault detection module, the fault detection module and the disk
Formula motor is connected, for the fault-signal of the disc type electric machine to be fed back to the processing unit of the disc type electric machine controller.
It preferably, further include brake position sensor, accelerator pedal position sensor and speed probe；The brake position
Set sensor, the accelerator pedal position sensor and entire car controller of the speed probe with the electric car
ECU is connected.
In the above-mentioned technical solutions, electric car disclosed by the invention makes full use of disc type electric machine, planetary reduction gear axial
Disc type electric machine, planetary reduction gear, differential mechanism are placed in (phase in drive shaft arranged in pairs by the advantage that size is short, output torque is big
When in driving half-bridge).For traditional motor combination ladder parallel shaft (speed) reducer combination, can effectively it save
Chassis space facilitates the other components of the electric cars such as the battery pack of arrangement larger capacity, can improve the row of electric car
Mileage is sailed, vehicle's center of gravity is reduced, improves riding stability.In addition, the electric car relative to In-wheel motor driving, the present invention mention
The electric car of confession advantageously reduces the following quality of bearing spring, especially reduces the quality of tire part.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only one recorded in the present invention
A little embodiments are also possible to obtain other drawings based on these drawings for those of ordinary skill in the art.
Fig. 1 and Fig. 5 is electric car is driven by pure electric power in mechanical differential four-wheel provided in an embodiment of the present invention two kinds respectively
Structural schematic diagram；
Fig. 2 is the structural schematic diagram of differential-speed dynamic coupling unit provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram that mechanical differential rear-wheel provided in an embodiment of the present invention is driven by electricity electric car；
Fig. 4 is the structural schematic diagram that mechanical differential front-wheel provided in an embodiment of the present invention is driven by electricity electric car；
Fig. 6 is pure electric automobile Electric control loop diagram of the present invention.
Fig. 7 is the schematic diagram of a closing discharge loop in the present invention.
Fig. 8 is the schematic diagram of another closing discharge loop in the present invention.
Specific embodiment
In order to make those skilled in the art more fully understand technical solution of the present invention, below in conjunction with attached drawing to this hair
It is bright to be further detailed.
The embodiment of the present invention provides a kind of electric car that mechanical differential is driven by pure electric power.The provided pure electricity of mechanical differential
The electric car of power drive can by four-wheel drive (as shown in Figure 1), can also by rear wheel drive (as shown in Figure 3),
Front-wheel drive (as shown in Figure 4) can be passed through.
Fig. 1-5 is please referred to, the electric car that mechanical differential provided in this embodiment is driven by pure electric power includes being distributed in pairs
Drive shaft, the drive shaft being distributed in pairs are sequentially connected with the left side gear D1 of differential mechanism 17F and right side gear D2 respectively.
It should be noted that the driving structure of electric car provided in the application is symmetrical structure, that is to say, that
Differential connection is realized by differential mechanism 17F with a pair of driving mechanism, while also symmetrical centered on differential mechanism 17F.
Drive shaft includes sequentially connected first jack shaft S1 and the second jack shaft 5LF, separate differential mechanism 17F's
Direction, the first jack shaft S1 and the second jack shaft 5LF, which are successively driven, to be connected, that is to say, that the one of the first jack shaft S1
End is connected with left side gear D1, and the other end is connected with the second jack shaft 5LF, and the rotation of the first jack shaft S1 will drive second
The end of the second jack shaft 5LF is arranged in jack shaft 5LF rotation, the wheel 1LF of electric car, the first jack shaft S1's
Rotation is eventually rotated by the second jack shaft 5LF final driven wheel 1LF.
In the present embodiment, be provided with brake disc 2LF at wheel 1LF, the second jack shaft 5LF by spring bearing 3LF with
The vehicle frame of electric car forms revolute pair.First jack shaft S1 and the second jack shaft 5LF can be driven by universal joint 6LF
Connection.It can also be realized and be sequentially connected by universal joint 4LF between second jack shaft 5LF and the wheel shaft of wheel 1LF.It is preferred that
, universal joint 6LF and universal joint 4LF can be Hooke's joint, be also possible to rzeppa joint.Certainly, universal joint 6LF
The connection with the first jack shaft S1 can also be realized by a pair of of gear pair or a pair of ring flange 9LF.It is connected by gear pair
Then allow the wheel shaft of the first jack shaft S1 and wheel 1LF not coaxial.In addition, the first jack shaft S1 or the second jack shaft
5LF can form revolute pair by the vehicle frame of spring bearing 7LF and electric car, and then reach the mesh for stablizing support transmission shaft
's.
Disc type electric machine controller 10LF, disc type electric machine 11LF and planetary reduction gear are disposed on first jack shaft S1
12LF；As shown in Figure 1, in the direction of the left side gear D1 close to differential mechanism 17F, disc type electric machine controller 10LF, disc type electric machine
11LF and planetary reduction gear 12LF is sequentially distributed in the first jack shaft S1.Disc type electric machine controller 10LF is for controlling disc type electricity
Machine 11LF work, such as unlatching, closing, revolving speed size of disc type electric machine 11LF etc..Disc type electric machine 11LF and planetary reduction gear
The revolving speed of 12LF transmission connection, disc type electric machine 11LF output passes to the first jack shaft after planetary reduction gear 12LF deceleration
S1 finally passes to wheel 1LF by the second jack shaft 5LF by the first jack shaft S1.
In the present embodiment, planetary reduction gear, the planetary reduction gear of the first jack shaft S1 are provided in pairs of drive shaft
The planet carrier PL4 of device 12LF can be with the coupling of the planet carrier PR4 of the planetary reduction gear 12RF on the first jack shaft S2, can be with
It is realized and is connect by way of fixed with the shell D6 of differential mechanism 17F.
In electric car disclosed in the present embodiment, the first jack shaft S1 is connect with the second jack shaft 5LF, and passes through disk
The driving of formula motor 11LF realizes that wheel 1LF is mobile, and entire drive shaft is designed using the structure of independent suspension.Due to driving mechanism
For symmetrical mechanism, angle and the second jack shaft 5LF and wheel between the first jack shaft S1 and the second jack shaft 5LF
Angle between the wheel shaft of 1LF is with the central symmetry of entire electric car.Such symmetrical structure can ensure that electric car exists
During operation, the moment of torsion of two wheels of same Time Transmission to pairs of distribution is same, and then can reduce torsion
The problem uneven to distribution.
It, can be by cross-tie 28 between two wheels being distributed in pairs referring to FIG. 1, in specific driving process
Linkage, cross-tie 28 by means of electronics power-assisted or can be connect power-assisted, are implemented as to distribution by rack and pinion drive mechanism 29
Two wheels steering.
Incorporated by reference to Fig. 2, in the present embodiment, differential mechanism 17F can be by forward side gear D3, rear side gear D4, gear shaft D5, a left side
Side gear D1, right side gear D2, differential casing D6 composition.Forward side gear D3, rear side gear D4, left side gear D1 and right side tooth
Wheel D2 surrounds intermeshing, and four be angular wheel.Wherein, forward side gear D3 and rear side gear D4 can be planetary gear, tooth
Wheel shaft D5 phase should be planetary gear shaft.When above-mentioned differential mechanism 17F can be realized electric car and be in straight travel state, keep left
Wheel and right wheel are in same rotational speed, when electric car is in turning driving state, allow right wheel and right wheel with different revolving speeds
Rotation, the i.e. rotation of realization differential.
Referring again to Fig. 2, in the present embodiment, planetary reduction gear 12LF may include sun gear PL1, planetary gear PL2, tooth
Enclose PL3 and planet carrier PL4.Above-mentioned planetary reduction gear 12LF has biggish reduction ratio, more can significantly reduce drive shaft
Axial dimension.The rotating speed output shaft of the present embodiment, disc type electric machine 11LF can be logical with the sun gear PL1 of planetary reduction gear 12LF
It crosses flange and realizes connection, finally the revolving speed of the output shaft of disc type electric machine 11LF is implemented to slow down, the final deceleration for realizing wheel 1LF
Torque increase.
Disc type electric machine 11LF is a kind of AC permanent magnet synchronous motor, and axial dimension is smaller.In the present embodiment, disc type electric machine
11LF can be single rotor list stator disc type motor, bimorph transducer single rotor disc type electric machine, double rotor single stator disc type motor, Surface Mount
Formula disc type electric machine, built-in disc type electric machine etc..
In the present embodiment, when electric car is four-wheel drive, positioned at rear axle or two disc type electric machines (disc type electricity of preceding bridge
Machine 11LR, disc type electric machine 11RR) it can both make motor, it can also be used as generator.Process of the electric car in downhill running
In, driver can put braking, can be made by operating mode controller and regeneration brake system 27L in idle running
Two disc type electric machines switch to power generation mode, and regeneration brake system 27L realizes the recycling of braking energy, in such cases,
In electric car, the disc type electric machine in two driving mechanisms in front be can work normally, the disk of two driving mechanisms at rear
Formula motor can be used as generator, start under the control of regeneration brake system 27L to recycle braking energy.
Electric car provided in this embodiment is powered by battery pack 24, and battery pack 24 is that the power of entire electric car comes
Source, usually rechargeable storage battery group.Electric car provided in this embodiment includes air-conditioning assembly, air-conditioning assembly and battery pack
24 electrical connections realize refrigeration and heat-production functions by the power supply of battery pack 24.As shown in Figure 1, air-conditioning assembly includes condenser 13, steams
Hair device 14, compressor 15 and compressor electric motor controller 16, above-mentioned all parts are connected to form Air-conditioning Cycle, and it is electronic to reach improvement
The purpose of automotive interior temperature environment.Specifically, condenser 13, compressor 15, evaporator 14 and compressor electric motor controller 16
It can be arranged in the cabin of electric car, similar to the engine nacelle of orthodox car.
Since battery pack 24 is the power resources of entire electric car, in order to be thought of as each electricity consumption part of electric car more
Easily to power, battery pack 24 is preferably placed between front-rear axle, i.e., between front wheels and rear wheels.Certainly, battery pack 24 can also
Think multiple, match respectively with each wheel, and then powers for each disc type electric machine.
In the present embodiment, disc type electric machine controller 10LF can be set to circular sleeve structure, disc type electric machine controller
10LF is set on the first jack shaft；Disc type electric machine controller 10LF is connected with battery pack, for provide battery pack 24
DC current is reverse into alternating current, and then reaches control disc type electric machine 11LF work, such as control disc type electric machine 11LF is rotated forward, is anti-
Turn, accelerate, slow down, start or stop.Disc type electric machine controller 10LF can be with the entire car controller ECU25 phase of electric car
It even, can be according to the output electric current of the control signal control battery pack 24 of entire car controller ECU25.Preferably, disc type electric machine control
Device 10LF processed may include fault detection module, and fault detection module is connected with disc type electric machine 11LF, be used for disc type electric machine
The fault-signal of 11LF feeds back to the processing unit of disc type electric machine controller 10LF, by the processing of disc type electric machine controller 10LF
After cell processing, processing result can be fed back to entire car controller ECU25, to facilitate driver to make according to troubleshooting result
Timely react.
In electric car provided in this embodiment, speed probe can be set on the anti-drive end of disc type electric machine 11LF
8LF, speed probe 8LF can be rotary transformer or photoelectric encoder, for acquiring the rotor ML2 of disc type electric machine 11LF
The location information of (the bearing ML3 of revolute pair is formed between corresponding stator ML1, stator ML1 and the first jack shaft S1).Turn
Fast sensor 8LF can be connected with entire car controller ECU25, can also pass through disc type electric machine controller 10LF and entire car controller
ECU25 is connected.
The brake pedal 20 of electric car can also be correspondingly arranged brake position sensor 21, and brake position sensor 21 is used
In the position signal of acquisition brake pedal 20.Brake position sensor 21 is connect with entire car controller ECU25, is stepped on for that will brake
The position signal of plate 20 is sent to whole controller ECU25.Entire car controller ECU25 can believe according to the position of brake pedal 20
Number use different modes of braking.Gently put two disc type electricity in the drive shaft for controlling the two sides differential mechanism 17F of rear axle in a flash
Machine (disc type electric machine 11LR, disc type electric machine 11RR), by passing through regeneration brake system (regeneration brake system 27L, regeneration system respectively
Dynamic system 27R) energy feeding braking power generation, it realizes energy recovery function, charges to battery pack 24.When depth touches on the brake, brake
Control by the braking torque distribution module in entire car controller ECU25, pass to brake controller 26, distribute brake force
Square, control clamp the dynamics of each brake disc (brake disc 2LF, brake disc 2RF, brake disc 2LR and brake disc 2RR), realize machine
Tool brake reduces speed, avoids skidding, reduce the abrasion of tire.
Electric car provided in this embodiment can also include accelerator pedal position sensor 23, accelerator pedal position sensing
Device 23 is used to acquire the position signal of gas pedal 22, and the position signal of gas pedal 22 is sent to entire car controller
The position signal can be converted into torque signals by ECU25, entire car controller ECU25, be sent to disc type electric machine controller 10LF,
Disc type electric machine controller 10LF can calculate required AC/DC electric current according to torque signals, be carried out accordingly by battery pack 24
The electric discharge of electricity is eventually fed each disc type electric machine, and then realizes the acceleration of electric car.
Electric car provided in this embodiment can also include steering wheel rotation angle sensor 19, steering wheel rotational angle
Sensor 19 is used for the rotational angle of detection direction disk 18, and steering wheel rotation angle sensor 19 can also be with entire car controller
ECU25 is connected, and for the rotational angle to entire car controller ECU25 feedback steering wheel 18, is referred to for driver to make corresponding adjust
It is whole.
Attached drawing 5 is please referred to, each electronic drive unit in electric car disclosed in this implementation can include battery pack
24, main relay protection circuit 30, boosting DC/DC voltage conversion circuit 31, discharge circuit 32, thin-film capacitor 42, inverter 33,
Execution unit (disc type electric machine 11) and decompression DC/DC voltage conversion circuit 51, motor drive controller 55, entire car controller
ECU25。
Disc type electric machine 11 (i.e. disc type electric machine 11LF, disc type electric machine 11RF, disc type electric machine 11LR or disc type electric machine 11RR)
Operating is powered by battery pack 24, protects circuit by main relay 34, pre-charge-relay 35, then passes through boosting DC/DC electricity
Translation circuit 31 is pressed to boost to battery pack 24, to reduce line loss and expand mechanical external characteristics section, by discharge circuit 32
It charges to thin-film capacitor 42, by inverter 33, inverse of the DC into AC supplies electricity to disc type electric machine 11.Disc type electric machine
Controller 10LF generates 6 tunnel PWM modulation waves, and (i.e. IGBT is opened 6 IGBT switching tubes of 3 bridge arms for controlling inverter 33
Close pipe 43, IGBT switching tube 44, IGBT switching tube 45, IGBT switching tube 46, IGBT switching tube 47, IGBT switching tube 48) it is logical
It is disconnected.Vehicle speed-up /-down command is converted into current order, passes to disc type electric machine controller 10LF, while passing by electric current
Sensor 49, current sensor 50 obtains current feedback values, while passing through rotary transformer or photoelectric encoder (speed probe
Rotor position information 8LF) is obtained, and seeks difference with initial value comparison, voltage sensor acquires input voltage (the bus electricity of inverter
Pressure), by vector control algorithm, input voltage needed for going out disc type electric machine 11 with CLARK transformation calculations by PARK transformation, most
Reach expected revolving speed eventually.Meanwhile the high pressure of battery pack 24 gives small storage battery 52, key by decompression DC/DC voltage conversion circuit 51
The accessory power supplys power supply such as spoon switch 53, car light.The movement of entire car controller ECU25 coordination motor drive controller 55.Such as Fig. 1,
Shown in Fig. 6.
Filter capacitor 36, IGBT37, IGBT39, reactor 38 collectively constitute DC/DC voltage conversion circuit 31.Work as IGBT41
When receiving 55 signal of motor drive controller and connecting, thin-film capacitor 42, resistance 40, IGBT41 switching transistor form wherein one
Item closes discharge loop, and thin-film capacitor 42 is discharged, discharged by resistance 40 with form of heat, as shown in Figure 7.Another closing electric discharge
Circuit is made of the switching transistor of filter capacitor 36, reactor 38, the freewheeling diode of IGBT39, resistance 40, IGBT41,
Filter capacitor 36 discharges, and the resistance 40 through the circuit is dissipated, as shown in Figure 8 with form of heat.
Thin-film capacitor 42, filter capacitor 36 pass through opening and closing for public discharge circuit 32, and control is driven by motor
Device 55 processed controls.Voltage sensor 54 acquires the DC bus-bar voltage of 33 input terminal of inverter, which is passed to
Motor drive controller 55.
Electric car disclosed by the invention makes full use of that disc type electric machine, planetary reduction gear axial dimension is short, output torque is big
The advantages of, disc type electric machine, planetary reduction gear, differential mechanism are placed in drive shaft arranged in pairs and (are equivalent to driving half-bridge).Phase
For traditional motor combination ladder parallel shaft (speed) reducer combination, chassis space can be effectively saved, arrangement is facilitated
The other components of the electric cars such as the battery pack of larger capacity can improve the mileage travelled of electric car, reduce vehicle weight
The heart improves riding stability.In addition, the electric car relative to In-wheel motor driving, electric car provided by the invention is advantageous
In reducing the following quality of bearing spring, the quality of tire part is especially reduced.
As shown in figure 5, electric car disclosed in the present embodiment can be the mechanical differential including more friction plate clutch
The electric car of coupling being driven by pure electric power, more friction plate clutch (more friction plate clutch 56LF, more friction disk types from
Clutch 56RF, more friction plate clutch 56LR, more friction plate clutch 56RR) be located at planetary reduction gear and differential mechanism it
Between, for realizing planetary reduction gear planet carrier and differential mechanism axle housing power combination with separate.More friction plate clutch can
With power, torque demand according to needed for electric automobile during traveling, separation or combine multidisc clutch, accelerate, climbing operating condition,
In conjunction with multidisc clutch, for transmitting more large torque, high-speed working condition separates multidisc clutch, and small-power operation improves continuous
Mileage is sailed, while improving the reliability of whole system, belongs to Redundancy Design.Specifically, electric car can be more friction plates
The rear wheel drive mechanical differential of formula clutch couples the front-wheel drive mechanical differential coupling of pure electric automobile, more friction plate clutch
The four driving machine tool differentials for closing pure electric automobile or more friction plate clutch couple pure electric automobile, as shown in Figure 5..
Such as Fig. 1,3 and 4, it should be noted that wheel 1RF, brake disc 2RF, spring bearing 3RF, universal joint 4RF, second
Jack shaft 5RF, universal joint 6RF, spring bearing 7RF, speed probe 8RF, ring flange 9RF, disc type electric machine controller 10RF,
Disc type electric machine 11RF, planetary reduction gear 12RF, differential mechanism 17R respectively with wheel 1LF, brake disc 2LF, spring bearing 3LF, universal
Save 4LF, the second jack shaft 5LF, universal joint 6LF, spring bearing 7LF, speed probe 8LF, ring flange 9LF, disc type electric machine
Controller 10LF, disc type electric machine 11LF, planetary reduction gear 12LF, differential mechanism 17F are corresponded, and function is identical, please specifically join
Examine the description in foregoing embodiments to all parts.
Similarly, wheel 1LR, brake disc 2LR, spring bearing 3LR, universal joint 4LR, the second jack shaft 5LR, universal joint
6LR, spring bearing 7LR, speed probe 8LR, ring flange 9LR, disc type electric machine controller 10LR, disc type electric machine 11LR, planet
Retarder 12LR respectively with wheel 1LF, brake disc 2LF, spring bearing 3LF, universal joint 4LF, the second jack shaft 5LF, universal
Save 6LF, spring bearing 7LF, speed probe 8LF, ring flange 9LF, disc type electric machine controller 10LF, disc type electric machine 11LF, row
Star retarder 12LF is corresponded, and function is identical, specifically please refers to the description in foregoing embodiments to all parts.
Similarly, wheel 1RR, brake disc 2RR, spring bearing 3RR, universal joint 4RR, the second jack shaft 5RR, universal joint
6RR, spring bearing 7RR, speed probe 8RR, ring flange 9RR, disc type electric machine controller 10RR, disc type electric machine 11RR, planet
Retarder 12RR respectively with wheel 1LF, brake disc 2LF, spring bearing 3LF, universal joint 4LF, the second jack shaft 5LF, universal
Save 6LF, spring bearing 7LF, speed probe 8LF, ring flange 9LF, disc type electric machine controller 10LF, disc type electric machine 11LF, row
Star retarder 12LF is corresponded, and function is identical, specifically please refers to the description in foregoing embodiments to all parts.
In the application, the first jack shaft S2, stator MR1, rotor MR2, bearing MR3, sun gear PR1, planetary gear PR2,
Gear ring PR3, planet carrier PR4 respectively with the first jack shaft S1, stator ML1, rotor ML2, bearing ML3, sun gear PL1, planet
It takes turns PL2, gear ring PL3, planet carrier PL4 to correspond, and function is identical, specifically please refers in foregoing embodiments to all parts
Description.
It is above that certain exemplary embodiments of the invention are only described by way of explanation, undoubtedly, for ability
The those of ordinary skill in domain without departing from the spirit and scope of the present invention can be with a variety of different modes to institute
The embodiment of description is modified.Therefore, above-mentioned attached drawing and description are regarded as illustrative in nature, and should not be construed as to the present invention
The limitation of claims.
Claims (7)
1. a kind of electric car that mechanical differential is driven by pure electric power, which is characterized in that including the drive shaft being distributed in pairs, divide in pairs
The drive shaft of cloth is sequentially connected with the left side gear of differential mechanism and right side gear respectively；The drive shaft includes being sequentially connected
The first jack shaft and the second jack shaft；
The drive shaft is two pairs, and two pairs of drive shafts are distributed in the preceding bridge and rear axle of the electric car respectively；Before described
One of bridge and the rear axle are connected with regeneration brake system；
In the direction far from the differential mechanism, first jack shaft and the second jack shaft are successively driven and are connected；
Disc type electric machine controller, disc type electric machine and planetary reduction gear are disposed on first jack shaft；
The disc type electric machine controller is connected with the disc type electric machine, for controlling the disc type electric machine；The disc type electric machine control
Device processed further includes fault detection module, and the fault detection module is connected with the disc type electric machine, is used for the disc type electric machine
Fault-signal feed back to the processing unit of the disc type electric machine controller；
The disc type electric machine and the planetary reduction gear are sequentially connected,
The planetary reduction gear is sequentially connected by first jack shaft and second jack shaft；Second driving
Half the tip of the axis is connect with the wheel drive of the electric car.
2. electric car according to claim 1, which is characterized in that the institute in the drive shaft of the differential mechanism two sides
The shell for stating the planet carrier and the differential mechanism of planetary reduction gear is fixedly linked.
3. electric car according to claim 1, which is characterized in that in the left side gear close to the differential mechanism
Direction, the disc type electric machine controller, the disc type electric machine and the planetary reduction gear are sequentially distributed in first driving half
Axis.
4. electric car according to claim 1, which is characterized in that the electric car further includes air-conditioning assembly, described
Air-conditioning assembly is electrically connected with the battery pack of the electric car.
5. electric car according to claim 1, which is characterized in that the disc type electric machine is single rotor list stator disc type electricity
Machine, bimorph transducer single rotor disc type electric machine, double rotor single stator disc type motor, surface-mount type disc type electric machine or built-in disc type electric machine.
6. electric car according to claim 1, which is characterized in that the disc type electric machine controller is circular sleeve knot
Structure, and be sheathed on first jack shaft；The disc type electric machine controller is connected with battery pack, is used for the battery pack
The DC inverter of offer is at alternating current, to control the disc type electric machine work.
7. any electric car in -6 according to claim 1, which is characterized in that further include brake position sensor, oil
Door pedal position sensor and speed probe；The brake position sensor, the accelerator pedal position sensor with it is described
Speed probe is connected with the entire car controller ECU of the electric car.
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| CN108215765B (en) * | 2018-01-15 | 2021-06-04 | 重庆交通大学 | Differential cascade electromechanical magnetic coupling drive axle for hybrid electric vehicle |
| CN110576706B (en) * | 2018-06-08 | 2021-10-12 | 郑州宇通客车股份有限公司 | Vehicle motion state control method and vehicle |
| CN110733329A (en) * | 2018-07-19 | 2020-01-31 | 郑州宇通客车股份有限公司 | synchronous asynchronous motor hybrid power system and vehicle |
| CN114312143B (en) * | 2021-12-31 | 2024-02-23 | 佛山仙湖实验室 | Coaxial double-motor electric drive axle and gear control method |
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Effective date of registration: 20191127 Address after: 518000, Guangdong Province, Longgang District, Shenzhen city street, 2123 new Bi Road, Indus space, 9 floor Patentee after: Shenzhen elephant Electric Technology Co., Ltd. Address before: 528400 No. 1106 exhibition hall, 16 Convention and Exhibition Road, Torch Development Zone, Zhongshan, Guangdong Patentee before: Zhongshan small elephant new energy Co., Ltd. |