Patent EP0725474A1 successfully refreshed from Google Patents.
EP0725474A1
Expired / Lapsed
EP
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System and method for driving electric vehicle
Assignee: Denso Corp
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Filing: 1996-01-30
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Granted: —
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Expires: 2016-01-30
Abstract
Abstract A torque-speed converter (1000) is composed of a first rotor (1210) which has a first control coil (1211), a second rotor (1310) and a stator which has a second control coil (1411). The second rotor (1310) has a first magnetic field member (1220) such as permanent magnets which supplies the first control coil (1211) with magnetic field and a second magnetic field member (1420) such as permanent magnets which supplies the second control coil (1411) with magnetic field. The first and second control coils are energized to drive the second rotor (1310) to rotate at a set speed with a set torque according to vehicle running condition. The first and the second control coil are also energized to generate battery charging current when the vehicle speed is decreased and the second rotor (1310) is driven by the vehicle wheels.
Inventors
- 👤 Masahiro c/o Nippondenso Co. Ltd. Seguchi
- 👤 Keiichiro c/o Nippondenso Co. Ltd. Banzai
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 14:58
CPC Classifications
B; B60; B60W; B60W20/00; B60K; B60K6/00; B60K6/20; B60K6/22; B60K6/26; B60K6/36; B60K6/365; B60K6/40; B60K6/405; B60K6/42; B60K6/44; B60K6/445; B60K6/448; B60K6/48; B60K6/485; B60L; B60L50/00; B60L50/10; B60L50/15; B60L58/00; B60L58/10; B60L58/12; B60L58/13; B60W10/00; B60W10/04; B60W10/06; B60W10/08; B60W10/10; B60W10/18; B60W10/24; B60W10/26; B60W10/30; H; H02; H02K; H02K51/00; B60K1/00; B60K17/00; B60K17/04; B60K17/16; B60K2001/003; B60K2006/262; B60K5/00; B60K5/04; B60L2210/00; B60L2210/20; B60L2220/00; B60L2220/50; B60L2220/52; B60L2240/00; B60L2240/40; B60L2240/48; B60L2240/486; B60W2710/00; B60W2710/10; B60W2710/105; B60W2710/1061; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/40; Y02T10/60; Y02T10/62; Y02T10/64; Y02T10/70; Y02T10/7072; Y02T10/72
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
199 words
A system for driving an electric vehicle having a battery (600), an engine (100) and a vehicle drive member (700, 900) comprising: a speed-torque converter (1000, 2000, 3000, 4000, 5000) having a housing (1710, 1720, 1730, 1920), an input shaft (1213, 1332a 3210) connected to said engine, an output shaft (1860, 3413) connected to said vehicle drive member, a first rotor (1210, 3220) having a first control coil (1211, 3221), a stator (1410, 3420) having a second control coil (1411, 3421), a second rotor (1310, 3210, 3410) having a first member (1220, 3212) for generating magnetic field interlinking said first control coil and a second member (1420, 3412) for generating magnetic field interlinking said second control coil; means (1911, 1912, 3281, 3481) for detecting rotation of said first rotor and said second rotor; and means (200, 400, 500), connected to said battery, said first and second control coils and said rotation detecting means, for supplying said first and second control coils with control electric current according to said rotation of said first and second rotors to convert rotational speed and torque of said engine and drive said vehicle drive member at a set rotational speed with a set torque.
Claim 2
Dependent Claim
31 words
A system for driving an electric vehicle as claimed in claim 1, wherein said first rotor is connected to input shaft and said second rotor is connected to said output shaft.
Claim 3
Dependent Claim
32 words
A system for driving an electric vehicle as claimed in claim 1, wherein said second rotor is connected to said input shaft and said first rotor is connected to said output shaft.
Claim 4
Independent Claim
37 words
A system for driving an electric vehicle as claimed in any one of claims 1, 2 and 3, wherein said speed-torque converter further comprises a speed reduction means (1800,4800, 5800) connected in series with said output shaft.
Claim 5
Independent Claim
39 words
A system for driving an electric vehicle as claimed in any one of claims 1, 2 and 3, wherein said speed-torque converter further comprises a planetary-gear speed reduction means (1812, 1820, 1830) connected in series with said output shaft.
Claim 6
Independent Claim
45 words
A system for driving an electric vehicle as claimed in any one of claims 1, 2 and 3, wherein said control current supplying means comprises means for controlling said engine to operate as a brake member when said vehicle drive member drives said output shaft.
Claim 7
Independent Claim
39 words
A system for driving an electric vehicle as claimed in any one of claims 1, 2 and 3, wherein said first rotor, said second rotor and said stator are disposed coaxially with each other on a common same plane.
Claim 8
Independent Claim
40 words
A system for driving an electric vehicle as claimed in any one of claims 1, 2 and 3, wherein said first rotor is disposed radially inside said second rotor and said second rotor is disposed radially inside said stator coaxially.
Claim 9
Independent Claim
31 words
A system for driving an electric vehicle as claimed in any one of claims 1, 2 and 3, wherein at least one of said first and second members comprises permanent magnets.
Claim 10
Independent Claim
33 words
A system for driving an electric vehicle as claimed in any one of claims 1, 2 and 3, wherein at least one of said first and second members comprises a squarrel cage conductor.
Claim 11
Independent Claim
43 words
A system for driving an electric vehicle as claimed in any one of claims 1, 2 and 3, wherein said first and second members comprise squarrel cage conductors and said second rotor comprises a nonmagnetic member disposed between said first and second members.
Claim 12
Independent Claim
101 words
A system for driving an electric vehicle as claimed in any one of claims 1, 2 and 3, wherein said control electric current supplying means comprises a first inverter (200) connected to said first control coil (1211, 3221), a second inverter (400) connected to said second control coil (1411, 3421) and an inverter control unit (500) connected to said rotation detecting means (1911, 1912, 3281, 3481) and to said first and second inverters for controlling timing of said control electric current supplied to said first and second control coils by said inverters according to rotation of said first and second rotors.
Claim 13
Independent Claim
31 words
A system for driving an electric vehicle as claimed in any one of claims 1, wherein said input shaft and said output shaft are disposed at same side of said housing.
Claim 14
Dependent Claim
26 words
A system for driving an electric vehicle as claimed in claim 13, wherein said input shaft and said output shaft are disposed caxially with each other.
Claim 15
Dependent Claim
31 words
A system for driving an electric vehicle as claimed in claim 14, wherein said rotation detecting means is disposed in said housing remote from said input shaft and said output shaft.
Claim 16
Dependent Claim
39 words
A system for driving an electric vehicle as claimed in claim as claim 15, wherein said control electric current supplying means comprises brushes and slip rings disposed in said housing remote from said input shaft and said output shaft.
Claim 17
Independent Claim
32 words
A system for driving an electric vehicle as claimed in any one of claims 16, wherein said speed-torque converter further comprises a speed reduction means connected in series with said output shaft.
Claim 18
Independent Claim
226 words
A system for driving an electric vehicle having a battery (600), an engine (100) and vehicle differential gears (900) comprising: a speed-torque converter (4000, 5000) having a housing (1710, 1720, 1730, 1920), an input shaft (1213, 1332a) disposed in said housing and connected to said engine at a side, an output shaft (1213, 1332a) disposed coaxially with said inpput shaft and connected to said vehicle differential gears at the same side, a first rotor (1210) having a first control coil (1211), a stator (1410) having a second control coil (1411), a second rotor (1310) having a first member (1220) for generating magnetic field interlinking said first control coil and a second member (1420) for generating magnetic field interlinking said second control coil; means (1911, 1912) for detecting rotation of said first rotor and said second rotor; and means (200, 400, 500), connected to said battery, said first and second control coils and said rotation detecting means, for supplying said first and second control coils with control electric current according to said rotation of said first and second rotors to convert rotational speed and torque of said engine and drive said vehicle drive member at a set rotational speed with a set torque, last said means comprising means for controlling said engine to operate as a brake member when said vehicle drive member drives said output shaft.
Claim 19
Dependent Claim
31 words
A system for driving an electric vehicle as claimed in claim 18, wherein said rotation detecting means is disposed in said housing remote from said input shaft and said output shaft.
Claim 20
Dependent Claim
39 words
A system for driving an electric vehicle as claimed in claim as claim 18, wherein said control electric current supplying means comprises brushes and slip rings disposed in said housing remote from said input shaft and said output shaft.
Claim 21
Dependent Claim
26 words
A system for driving an electric vehicle as claimed in claim 18, wherein said control electric current supplying means comprises means for generating battery charging current.
Claim 22
Independent Claim
209 words
A system for driving an electric vehicle having a battery (600), an engine (100) and a vehicle drive member (700, 900) comprising: a speed-torque converter (1000, 2000, 3000, 4000, 5000) having a housing (1710, 1720, 1730, 1920), an input shaft (1213, 1332a 3210) connected to said engine, an output shaft (1860, 3413) connected to said vehicle drive member, a first rotor (1210, 3220) having a first control coil (1211, 3221), a stator (1410, 3420) having a second control coil (1411, 3421), a second rotor (1310, 3210, 3410) having a first member (1220, 3212) for generating magnetic field interlinking said first control coil through a magnetic path and a second member (1420, 3412) for generating magnetic field interlinking said second control coil through the same magnetic path ; means (1911, 1912, 3281, 3481) for detecting rotation of said first rotor and said second rotor; and means (200, 400, 500), connected to said battery, said first and second control coils and said rotation detecting means, for supplying said first and second control coils with control electric current according to said rotation of said first and second rotors to convert rotational speed and torque of said engine and drive said vehicle drive member at a set rotational speed with a set torque.
Claim 23
Dependent Claim
34 words
A system for driving an electric vehicle as claimed in claim 22, wherein said first member comprises a number of magnetic poles and said second member comprises the same number of the magnetic poles.
Claim 24
Dependent Claim
33 words
A system for driving an electric vehicle as claimed in claim 22, wherein said second rotor comprises a laminated core having a plurality of holes for accommodating said first and second members therein.
Claim 25
Independent Claim
215 words
A system for driving an electric vehicle having a battery (600), an engine (100) and a vehicle drive member (700, 900) comprising: a first electromagnetic rotary unit having an input shaft (1213, 1332a 3210) connected to said engine, a first rotor (1210, 3220) connected to said input shaft and having a first control coil (1211, 3221), a first member (1220, 3212) for generating magnetic field interlinking said first control coil; a second electromagnetic rotary unit having an output shaft (1860, 3413) connected to said vehicle drive member, a stator (1410, 3420) having a second control coil (1411, 3421) and a second rotor connected to said output shaft and having a second member (1420, 3412) for generating magnetic field interlinking said second control coil, said second rotor being fixed to said first member ; means (1911, 1912, 3281, 3481) for detecting rotation of said first rotor and said second rotor; and means (200, 400, 500), connected to said battery, said first and second control coils and said rotation detecting means, for supplying said first and second control coils with control electric current according to said rotation of said first and second rotors to convert rotational speed and torque of said engine and drive said vehicle drive member at a set rotational speed with a set torque.
Claim 26
Dependent Claim
24 words
A system for driving an electric vehicle as claimed in claim 25, wherein said first and second control coils comprise respectively three phase windings.
Claim 27
Dependent Claim
22 words
A system for driving an electric vehicle as claimed in claim 26, wherein said first and second members comprise respectively permanent magnets.
Claim 28
Dependent Claim
27 words
A system for driving an electric vehicle as claimed in claim 26, wherein at least one of said first and second members comprises a squirrel cage conductor.
Claim 29
Independent Claim
149 words
A method for driving an electric vehicle having a battery (600), an engine (100), a vehicle drive member (700, 900) a first electromagnetic rotary unit having a first control coil and an input shaft (1213, 1332a 3210) connected to said engine, a second electromagnetic rotary unit having a second control coil and an output shaft (1860, 3413) connected to said vehicle drive member, said method comprising steps of; calculating a set torque Tv and set angular speed ωv of said vehicle drive member; detecting output torque Te and angular speed ωe of said engine; supplying said first and second control coils with control electric current according to differences between said torques Tv and Te and between said angular speeds ωv and ωe thereby to convert torque Te and angular speed ωe of said engine and drive said vehicle drive member at said set torque Tv and set angular speed.
Claim 30
Dependent Claim
64 words
A method for driving an electric vehicle as claimed in claim 29 further comprising a step of supplying said first and second control coils with control electric current to generate battery charging current when said angular speed ωe of said engine is higher than said set angular speed ωv and said output torque Te of said engine is larger than said set torque Tv.
Claim 31
Dependent Claim
63 words
A method for driving an electric vehicle as claimed in claim 29 further comprising a step of supplying said first and second control coils with control electric current to generate driving torque when said angular speed ωe of said engine is lower than said set angular speed ωv and said output torque Te of said engine is lower than said set torque Tv.
Claim 32
Dependent Claim
71 words
A method for driving an electric vehicle as claimed in claim 29 further comprising a step of supplying said first and second control coils with control electric current to connect said vehicle drive member to said engine as a load when said angular speed ωe of said engine is lower than said set angular speed ωv and said output torque Te of said engine is smaller than said set torque Tv.
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