GB2499030A - Emergency power device for electric vehicle - Google Patents

Emergency power device for electric vehicle Download PDF

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Publication number
GB2499030A
GB2499030A GB1201960.0A GB201201960A GB2499030A GB 2499030 A GB2499030 A GB 2499030A GB 201201960 A GB201201960 A GB 201201960A GB 2499030 A GB2499030 A GB 2499030A
Authority
GB
United Kingdom
Prior art keywords
engine
speed change
change mechanism
power
gear speed
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.)
Withdrawn
Application number
GB1201960.0A
Other versions
GB201201960D0 (en
Inventor
Donald P H Wu
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.)
Energy Control Ltd
Original Assignee
Energy Control Ltd
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 Energy Control Ltd filed Critical Energy Control Ltd
Priority to GB1201960.0A priority Critical patent/GB2499030A/en
Publication of GB201201960D0 publication Critical patent/GB201201960D0/en
Publication of GB2499030A publication Critical patent/GB2499030A/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
    • B60K6/54—Transmission for changing ratio
    • B60K6/543—Transmission for changing ratio the transmission being a continuously variable transmission
    • 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
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • 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
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
    • B60K6/54—Transmission for changing ratio
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/50—Control strategies for responding to system failures, e.g. for fault diagnosis, failsafe operation or limp mode
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

Abstract

A vehicle having an emergency power device comprises an electric motor 20 with a motor input shaft 21, an battery assembly 30 electrically connected to the electric motor 20, a gear speed change mechanism 40 connected to the motor input shaft 21, a continuously variable transmission (CVT) 50 connected between the gear speed change mechanism 40 and the engine 60 to reduce a rotating speed of the engine power input shaft 61. The power take-off shaft 70 is connected to the gear speed change mechanism 40 to output power transmitted from the gear speed change mechanism 40. In normal conditions, the electric vehicle is fully driven by the electric motor 20, and the engine 60 starts working only when the electric motor 20 fails. Hence, the high energy consumption problem of the conventional hybrid electric vehicle can be solved. Furthermore, the engine 60 serves as an emergency power supplier for supplying power when an emergency occurs, improving safety and stability of the vehicle. The vehicle normally operates as a pure electric vehicle.

Description

EMERGENCY POWER DEVICE FOR A PURE ELECTRIC VEHICLE
BACKGROUND OF THE INVENTION
Field of the Invention
The present invention relates to an electric vehicle, and more particularly to 5 an emergency power device for a pure electric vehicle.
Description of the Prior Art
A hybrid electric vehicle 10, as shown in Figs. 1-3, essentially comprises an electric motor 11, a CVT 12 (Continuously Variable Transmission), a gear speed change mechanism 13, and an engine 14. The electric motor 11 is connected to the 10 CVT 12, and the CVT 12 is connected to the gear speed change mechanism 13. Namely, the CVT 12 is located between the electric motor 11 and the gear speed change mechanism 13, so that the electric motor 11 can output power via the CVT 12 and the gear speed change mechanism 13. The engine 14 is connected to the gear speed change mechanism 13 and outputs power via the gear speed change 15 mechanism 13. As shown in Fig. 3, when the speed of the hybrid electric vehicle 10 reaches a predetermined value, the engine 14 starts working, and when the speed is lower than a predetermined value, the electric motor 11 starts working to replace a part of the engine 14. In other words, the electric motor 11 and the engine 14 work together to drive the hybrid electric vehicle, and the hybrid vehicle is fully driven by 20 the engine 14 when at a low speed, causing high energy consumption.
The hybrid electric vehicle is different from a "pure electric vehicle" since the pure electric vehicle is totally driven by electric motor all the time no matter the speed of the vehicle is high or low.
It is to be noted that the battery used in a pure electric vehicle normally consists of thousands of small battery cells connected together to form a battery assembly. When one of the battery cells is broken, the whole battery assembly will be broken, as a result, the pure electric vehicle will stop running all in a sudden, 5 causing serious safety problems.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages.
SUMMARY OF THE INVENTION
The primary object of the present invention is to provide an emergency 10 power device for a pure electric vehicle, which is capable of solving the high energy consumption problem of the conventional hybrid electric vehicle while improving safety and stability of the vehicle.
To achieve the above object, an emergency power device for a pure electric vehicle in accordance with the present invention comprises an electric motor, a 15 battery assembly, a gear speed change mechanism, a CVT, an engine and a power take-off shaft.
The electric motor includes a motor input shaft.
The battery assembly is electrically connected to the electric motor for supplying electric power to the electric motor.
20 The gear speed change mechanism is connected to the motor input shaft for reducing a rotating speed of the motor input shaft.
The continuously variable transmission is connected to the gear speed change mechanism by a power shaft.
The engine includes an engine power input shaft for connecting the engine to the continuously variable transmission, so that the CVT is connected between the gear speed change mechanism and the engine to reduce a rotating speed of the engine power input shaft.
5 The power take-off shaft is connected to the gear speed change mechanism to output power transmitted from the gear speed change mechanism.
In normal conditions, the electric vehicle in accordance with the present invention is fully driven by the electric motor, and the engine starts working only when the electric motor fails. Hence, the high energy consumption problem of the 10 conventional hybrid electric vehicle can be solved. Furthermore, the engine serves as an emergency power supplier for supplying power when an emergency occurs, improving safety and stability of the vehicle.
BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an illustrative view of a conventional hybrid electric vehicle; 15 Fig. 2 is a schematic view of the conventional hybrid electric vehicle;
Fig. 3 is a flow chart view of the conventional hybrid electric vehicle; Fig. 4 is a schematic view of an emergency power device for a pure electric vehicle in accordance with a preferred embodiment of the present invention;
Fig. 5 is a schematic view of the emergency power device for a pure electric 20 vehicle in accordance with a preferred embodiment of the present invention; and
Fig. 6 is a flow chart of an emergency power device for a pure electric vehicle in accordance with a preferred embodiment of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
3
The present invention will be clearer from the following description when viewed together with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiment in accordance with the present invention.
5 Referring to Figs. 4-6, an emergency power device for a pure electric vehicle in accordance with a preferred embodiment of the present invention comprises an electric motor 20, a battery assembly 30, a gear speed change mechanism 40, a CVT (continuously variable transmission) 50, an engine 60 and a power take-off shaft 70.
10 The electric motor 20 includes a motor input shaft 21.
The battery assembly 30 is electrically connected to the electric motor 20 for supplying electric power to the electric motor 20.
The gear speed change mechanism 40 is connected to the motor input shaft 21 for reducing the rotating speed of the motor input shaft 21. 15 The CVT 50 is connected to the gear speed change mechanism 40 by a power shaft 51.
The engine 60 includes an engine power input shaft 61 for connecting the engine 60 to the CVT 50, namely, the CVT 50 is connected between the gear speed change mechanism 40 and the engine 60 to reduce the rotating speed of the engine 20 power input shaft 61.
The power take-off shaft 70 is connected to the gear speed change mechanism 40.
Referring to Fig. 6, when the emergency power device works, the electric
motor 20 starts working and outputs power to the power take-off shaft 70 via the gear speed change mechanism 40, and the power is finally outputted by the power take-off shaft 70.
When the electric motor 20 fails or the battery assembly 30 is broken, the 5 engine 60 starts working to transmit power to the CVT 50 via the engine power input shaft 61, then the power is transmitted to the gear speed change mechanism 40 by the power shaft 51 and finally outputted by the power take-off shaft 70.
It is clear from the above description that, in normal conditions, the electric vehicle in accordance with the present invention is fully driven by the electric motor 10 20, and the engine 60 starts working only when the electric motor 20 fails. Hence, the high energy consumption problem of the conventional hybrid electric vehicle can be solved. Furthermore, the engine 60 serves as an emergency power supplier for supplying power when an emergency occurs, improving safety and stability of the vehicle.
15 While we have shown and described various embodiments in accordance with the present invention, it is clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
5

Claims (2)

WHAT IS CLAIMED IS:
1. An emergency power device for a pure electric vehicle comprising: an electric motor with a motor input shaft;
a battery assembly electrically connected to the electric motor for supplying 5 electric power to the electric motor;
a gear speed change mechanism connected to the motor input shaft for reducing a rotating speed of the motor input shaft;
a continuously variable transmission connected to the gear speed change mechanism by a power shaft;
10 an engine including an engine power input shaft for connecting the engine to the continuously variable transmission, so that the CVT is connected between the gear speed change mechanism and the engine to reduce a rotating speed of the engine power input shaft; and a power take-off shaft connected to the gear speed change mechanism to 15 output power transmitted from the gear speed change mechanism.
2. An emergency power device substantially as hereinbefore described with reference to Figure 4 of the accompanying drawings.
6
GB1201960.0A 2012-02-06 2012-02-06 Emergency power device for electric vehicle Withdrawn GB2499030A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1201960.0A GB2499030A (en) 2012-02-06 2012-02-06 Emergency power device for electric vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1201960.0A GB2499030A (en) 2012-02-06 2012-02-06 Emergency power device for electric vehicle

Publications (2)

Publication Number Publication Date
GB201201960D0 GB201201960D0 (en) 2012-03-21
GB2499030A true GB2499030A (en) 2013-08-07

Family

ID=45896640

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1201960.0A Withdrawn GB2499030A (en) 2012-02-06 2012-02-06 Emergency power device for electric vehicle

Country Status (1)

Country Link
GB (1) GB2499030A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040168841A1 (en) * 2003-02-12 2004-09-02 Takashi Ohta Hybrid vehicle
US20080000746A1 (en) * 2006-06-29 2008-01-03 Zf Friedrichshafen Ag Drivetrain arrangement and method for operating a drivetrain arrangement
JP2009113673A (en) * 2007-11-07 2009-05-28 Toyota Motor Corp Drive device for hybrid vehicle
JP2009234498A (en) * 2008-03-28 2009-10-15 Toyota Motor Corp Control device for hybrid car
US20100114424A1 (en) * 2008-11-04 2010-05-06 Gm Global Technology Operations, Inc. Apparatus and Method for Determining Driveline Lash Estimate
US20110320084A1 (en) * 2009-03-12 2011-12-29 Toyota Jidosha Kabushiki Kaisha Mislocking preventing apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040168841A1 (en) * 2003-02-12 2004-09-02 Takashi Ohta Hybrid vehicle
US20080000746A1 (en) * 2006-06-29 2008-01-03 Zf Friedrichshafen Ag Drivetrain arrangement and method for operating a drivetrain arrangement
JP2009113673A (en) * 2007-11-07 2009-05-28 Toyota Motor Corp Drive device for hybrid vehicle
JP2009234498A (en) * 2008-03-28 2009-10-15 Toyota Motor Corp Control device for hybrid car
US20100114424A1 (en) * 2008-11-04 2010-05-06 Gm Global Technology Operations, Inc. Apparatus and Method for Determining Driveline Lash Estimate
US20110320084A1 (en) * 2009-03-12 2011-12-29 Toyota Jidosha Kabushiki Kaisha Mislocking preventing apparatus

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Publication number Publication date
GB201201960D0 (en) 2012-03-21

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