DE19709579C2 - Electric single wheel drive with multiple motors - Google Patents

Electric single wheel drive with multiple motors

Info

Publication number
DE19709579C2
DE19709579C2 DE1997109579 DE19709579A DE19709579C2 DE 19709579 C2 DE19709579 C2 DE 19709579C2 DE 1997109579 DE1997109579 DE 1997109579 DE 19709579 A DE19709579 A DE 19709579A DE 19709579 C2 DE19709579 C2 DE 19709579C2
Authority
DE
Germany
Prior art keywords
brake
electric
wheel
wheel drive
gear
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE1997109579
Other languages
German (de)
Other versions
DE19709579A1 (en
Inventor
Michael Roske
Uenal Gazyakan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZF Friedrichshafen AG
Original Assignee
ZF Friedrichshafen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Priority to DE1997109579 priority Critical patent/DE19709579C2/en
Publication of DE19709579A1 publication Critical patent/DE19709579A1/en
Application granted granted Critical
Publication of DE19709579C2 publication Critical patent/DE19709579C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K7/00Disposition of motor in, or adjacent to, traction wheel
    • B60K7/0007Disposition of motor in, or adjacent to, traction wheel the motor being electric
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K1/00Arrangement or mounting of electrical propulsion units
    • B60K1/02Arrangement or mounting of electrical propulsion units comprising more than one electric motor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K17/00Arrangement or mounting of transmissions in vehicles
    • B60K17/04Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/043Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
    • B60K17/046Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel with planetary gearing having orbital motion
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K7/00Disposition of motor in, or adjacent to, traction wheel
    • B60K2007/003Disposition of motor in, or adjacent to, traction wheel with two or more motors driving a single wheel
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K7/00Disposition of motor in, or adjacent to, traction wheel
    • B60K2007/0038Disposition of motor in, or adjacent to, traction wheel the motor moving together with the wheel axle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K7/00Disposition of motor in, or adjacent to, traction wheel
    • B60K2007/0061Disposition of motor in, or adjacent to, traction wheel the motor axle being parallel to the wheel axle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L2220/00Electrical machine types; Structures or applications thereof
    • B60L2220/40Electrical machine applications
    • B60L2220/46Wheel motors, i.e. motor connected to only one wheel
    • Y02T10/7258

Description

The invention relates to an electric single wheel powered with multiple motors, their drive power through a collective gearbox is merged as it is from the DE 72 84 69 C1 is known. Such a drive is a Planetary gear connected downstream, which the drive torque and adjusts the wheel speed. Electric single wheel drives with downstream planetary gear are also be knows, the publication DE 26 30 206 C2 gives an example for such an independent wheel drive.

Such electric independent wheel drives with nachge switched planetary gear can for example in close traffic buses are used. Because with this drive the otherwise usual axle bridge housing for axle drive and Diffe buses with very low corridors hen be built. With the previous drive concepts for Low-floor buses with electric single-wheel drive prove However, the large axial length of the electric motor or the length of the entire drive unit with nachge switched planetary gear as disadvantageous because of this length the passage in the corridor of the bus at the level of the wheels concentrated.

The invention has for its object an elek trical independent wheel drive that builds very short, so that the passage width in the hallway of a low-floor bus is not noticeably restricted at the level of the wheels and which one an adjustment of the wheel torque and the wheel speed made possible.  

This task comes with a, including the distinctive Features of the main claim, generic electric single wheel drive solved.

The driving power of a large electric motor is divided into several smaller ones. Their respective Drive power is increased by a spur gear transmission brought together. The individual, smaller electric motors ha ben a smaller axial length, so that the entire An drive unit less far towards the interior of the bus protrudes. Adaptation to the required wheel torque ment and the wheel speed takes place via a downstream Planetary gear, the output-side spur gear of the Helical gearbox with the sun gear of the planetary gear drive is connected via a shaft. The wheel bearing, the the wheel hub rotates, is axially between the forehead arranged wheel gear and the planetary gear, so that the initiation of the wheel load is essentially advantageous in the middle between the group and the planetary gear follows. The rims are attached to the wheel hub and with driven by the planetary gear. The passage porridge te in the vehicle interior at the level of the wheels same total vehicle width advantageously enlarge ßert.  

The brake is preferably actuated pneumatically Disc brake trained. It also acts as Service, parking, emergency or auxiliary brake.  

In another advantageous embodiment of the Er The brake is a hydraulically operated disc brake trained. Again it acts as Service, parking, emergency or auxiliary brake.

The caliper is preferably below the hori Central wheel center line arranged. It is advantageous in a circular sector between 150 ° and 210 °, the Normal vector of the circular disk in the direction of the wheel axis shows and the angle from that perpendicular upwards, d. H. in Radius vector pointing in the direction of the vehicle's vertical axis becomes. The brake actuator is a combi nated diaphragm and spring-loaded cylinder. she is arranged in a hollow axle body in the axial direction. When the wheel head is mounted, it is inside due to its position of the hollow axle body protected against knocks.

In another advantageous embodiment of the Er the invention is the electric motors, the spur gear transmission and the planetary gear within the wheel hub introduced. The entire drive unit hardly protrudes anymore out of the rim axially inwards so that the through aisle width of a low-floor bus at the level of the wheels in the Mainly limited by the width of the tires becomes. The wheel bearing that rotatably supports the wheel hub is thereby axially between the spur gear transmission and Planetary gear arranged. The rims are on the Wheel hub attached.  

The brake is advantageous as wet-running disks brake trained. In turn, it functions equally as Service, parking, emergency or auxiliary brake. It is axial between both the two gear stages spur gear and planetary gear as well as the two wheel bearings orderly.

In an advantageous embodiment of the invention the brake is actuated by two separate hydraulic valves likzylinder. The parking brake is activated by a spring-loaded piston actuated. The service brake is actuated by a piston under pressure.

The electric motors are preferably powered by air, Chilled water, oil or other media.

In an advantageous embodiment of the invention the electric motors can be controlled separately. This enables a higher efficiency in the partial load range in Comparison to a single-motor single wheel drive.

The distribution of the drive power of the single wheel drive to several electric motors with lower power, which are shorter than more powerful motors, offers other advantages in addition to the reduction in the overall length of the single wheel drive:
If one of the drive motors in the wheel head fails, operation with the remaining motors is still possible. Furthermore, cost advantages arise from the use of engines that are in the performance class of car drive engines and are therefore produced in large series.

Exemplary embodiments of the invention are shown in the drawings shown. Show it:

Figure 1 is a section through an electric single-wheel drive with a plurality of motors, a spur gear, which merged their drive power and a downstream planetary gear that adjusts the drive torque and the wheel speed.

Figure 2 is a plan view of an electric single wheel drive with two motors from the side of the wheel head facing the vehicle interior.

Fig. 3 is a section through a housed in a wheel head electric individual wheel with a plurality of motors, a Stirnradsammelgetriebe, which together with a motive power and a downstream planetary gear that adjusts the driving torque and the wheel speed;

Fig. 4 is a plan view of an electric single wheel drive accommodated in a wheel head with three motors from the side of the wheel head facing the vehicle interior.

In one embodiment of the invention, two electric motors 1 drive a spur gear 2 , which is connected via a shaft to the sun gear of a planetary gear 3 . The ring gear of the planetary gear 3 is fixed. The planet carrier drives two wheels 6 via a wheel hub 5 . The wheel bearing 4 , which rotatably supports the wheel hub 5 , is axially mounted between spur gear 2 and planetary gear 3 . A preferably designed as a pneumatically actuated disc brake brake 7 fulfills the service, parking, emergency and auxiliary brake functions. The brake caliper 8 is arranged below the horizontal wheel center line. It is located in a circular sector between 150 ° and 210 °, with the normal vector of the circular disk pointing in the direction of the wheel axis and the angle from the perpendicular to the top, ie in the direction of the vehicle vertical axis pointing radius vector is measured. The brake actuation 9 is designed as a combined diaphragm and spring-loaded cylinder which is arranged in the axial direction and is protected in a hollow axle body when the wheel head is installed. In a technical variant, the brake 7 is actuated drastically. ( Figs. 1 and 2)

In another embodiment of the invention, three electric motors 1 drive a spur gear transmission 2 , which is connected via a shaft to the sun gear of a planetary gear 3 . The ring gear of the planetary gear 3 is fixed. The planet carrier drives two rims 6 via a wheel hub 5 . The electric motors 1 , the spur gear 2 and the planetary gear 3 are housed within the wheel hub 5 . The entire drive unit hardly protrudes axially inward beyond the rim width. The wheel bearing 4 , which rotatably supports the wheel hub 5 , is introduced axially between the electric motors 1 and the planetary gear 3 . A brake 17 designed as a wet-running multi-disk brake fulfills the service, parking, emergency and auxiliary brake functions. The brake actuation 19 is carried out by two separate hydraulic cylinders. The parking brake is actuated by a spring-loaded piston. The service brake is actuated by a pressure-loaded piston. The electric motors can be controlled separately.

LIST OF REFERENCE NUMBERS

1

electric motor

2

Stirnradsammelgetriebe

3

planetary gear

4

Wheel bearing

5

wheel hub

6

rims

7

brake

8th

caliper

9

brake

17

brake

19

brake

Claims (9)

1. Electric single-wheel drive for a vehicle, with a wheel hub ( 5 ), a wheel bearing ( 4 ), a brake ( 7 ) and a plurality of electric motors ( 1 ), the drive power of which is summarized via a common gear ( 2 ), characterized in that the output side Spur gear of the collective gear ( 2 ) via a shaft with the sun gear of a planetary gear ( 3 ) and the planetary gear ( 3 ) with the wheel hub ( 5 ) and that axially between the collective gear ( 2 ) and the planetary gear ( 3 ) the wheel bearing ( 4 ) is arranged.
2. Electric single wheel drive according to claim 1, characterized in that the brake ( 7 ) is designed as a pneumatically actuated disc brake and functions as a service, parking, emergency or auxiliary brake.
3. Electric single wheel drive according to claim 1, characterized in that the brake se ( 7 ) is designed as a hydraulically actuated disc brake and acts as a service, parking, emergency or auxiliary brake.
4. Electric single wheel drive according to claim 2 or 3, characterized in that the brake caliper ( 8 ) is arranged below the horizontal wheel center line and the brake actuation ( 9 ) is designed as a combined diaphragm and spring-loaded cylinder and is arranged in the axial direction in a hollow axle body.
5. Electric single wheel drive according to claim 1, characterized in that the Elektromo gates ( 1 ), the collective gear ( 2 ) and the planetary gear ( 3 ) are housed within a wheel hub ( 5 ).
6. Electric single wheel drive according to claim 1, characterized in that the brake ( 17 ) is designed as a wet-running multi-disc brake and functions as a loading, parking, emergency or auxiliary brake.
7. Electric single wheel drive according to claim 6, characterized in that the brake actuation ( 19 ) is carried out by two separate hydraulic cylinders, the parking brake being actuated by a spring-loaded piston and the service brake being operated by a pressure-loaded piston.
8. Electric single wheel drive according to claim 1, characterized in that the Elektromo gates ( 1 ) are cooled by air, water, oil or other media.
9. Electric single wheel drive according to claim 1, characterized in that the Elektromo gates ( 1 ) are controlled separately.
DE1997109579 1997-03-08 1997-03-08 Electric single wheel drive with multiple motors Expired - Fee Related DE19709579C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1997109579 DE19709579C2 (en) 1997-03-08 1997-03-08 Electric single wheel drive with multiple motors

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1997109579 DE19709579C2 (en) 1997-03-08 1997-03-08 Electric single wheel drive with multiple motors
JP10057127A JPH10258642A (en) 1997-03-08 1998-03-09 Electric wheel drive device provided with plural electric motors

Publications (2)

Publication Number Publication Date
DE19709579A1 DE19709579A1 (en) 1998-09-17
DE19709579C2 true DE19709579C2 (en) 2003-04-30

Family

ID=7822700

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1997109579 Expired - Fee Related DE19709579C2 (en) 1997-03-08 1997-03-08 Electric single wheel drive with multiple motors

Country Status (2)

Country Link
JP (1) JPH10258642A (en)
DE (1) DE19709579C2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107458211A (en) * 2017-07-24 2017-12-12 湖北航天技术研究院特种车辆技术中心 A kind of electronic wheel assembly
DE102017214745A1 (en) 2017-08-23 2019-02-28 Zf Friedrichshafen Ag Central drive unit for a vehicle and drive arrangement with the central drive unit

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19903443A1 (en) 1999-01-29 2000-08-03 Sram De Gmbh Drive unit for an electrically powered vehicle
DE19932586A1 (en) * 1999-07-13 2001-04-12 Zahnradfabrik Friedrichshafen Axle with an axle bridge arranged below the wheel axle
DE19945345A1 (en) * 1999-09-22 2001-04-05 Zahnradfabrik Friedrichshafen Wheel drive for driving a vehicle wheel
NL1014182C2 (en) * 2000-01-26 2001-07-27 Special Products For Industry Wheel provided with drive means.
US7533747B2 (en) 2000-01-26 2009-05-19 E-Traction Europe B.V. Wheel provided with driving means
US6765327B2 (en) 2002-03-27 2004-07-20 The Timken Company Integral driveline support and electric motor
US6922004B2 (en) 2002-04-05 2005-07-26 The Timken Company Axial flux motor assembly
WO2006062125A1 (en) * 2004-12-09 2006-06-15 Equos Research Co., Ltd. Wheel supporting and driving device
JP4441869B2 (en) * 2004-12-20 2010-03-31 株式会社デンソー Traveling body having electric wheels
JP4496474B2 (en) * 2004-12-28 2010-07-07 株式会社デンソー Electric wheel structure
JP3816938B1 (en) * 2005-06-07 2006-08-30 快堂 池田 In-wheel motor with a drive unit enclosed in a high-pressure pressurized chamber
JP4360376B2 (en) * 2006-03-31 2009-11-11 トヨタ自動車株式会社 Drive wheel structure for vehicle
FR2962079B1 (en) * 2010-07-01 2012-07-27 Michelin Soc Tech Motorized hub comprising an electric traction machine.
JP5677142B2 (en) * 2011-03-08 2015-02-25 本田技研工業株式会社 In-wheel type wheel drive device
JP5728272B2 (en) * 2011-03-31 2015-06-03 本田技研工業株式会社 Electric vehicle
GB201605365D0 (en) * 2016-03-30 2016-05-11 Deregallera Holdings Ltd In-wheel electric motor unit
CN106427555B (en) * 2016-12-01 2018-07-27 吉林大学 It is a kind of for electric automobile wheel all-directional turn to conversion equipment and can comprehensive steering electric vehicle
CN106956584A (en) * 2017-04-10 2017-07-18 深圳市万维博新能源技术有限公司 Many motor multi gear wheel hub power devices
CN107599824B (en) * 2017-08-15 2019-07-26 湖北航天技术研究院特种车辆技术中心 A kind of low-speed big single reduction gear Electric Motor Wheel

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107458211A (en) * 2017-07-24 2017-12-12 湖北航天技术研究院特种车辆技术中心 A kind of electronic wheel assembly
CN107458211B (en) * 2017-07-24 2019-09-03 湖北航天技术研究院特种车辆技术中心 A kind of electronic wheel assembly
DE102017214745A1 (en) 2017-08-23 2019-02-28 Zf Friedrichshafen Ag Central drive unit for a vehicle and drive arrangement with the central drive unit
WO2019038001A1 (en) 2017-08-23 2019-02-28 Zf Friedrichshafen Ag Central drive unit for a vehicle, and drivetrain arrangement having the central drive unit

Also Published As

Publication number Publication date
DE19709579A1 (en) 1998-09-17
JPH10258642A (en) 1998-09-29

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8304 Grant after examination procedure
8364 No opposition during term of opposition
R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee
R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee

Effective date: 20141001