Patent EP0457594A2 successfully refreshed from Google Patents.
EP0457594A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A regenerative brake device for electric motor vehicles
Assignee: Honda Motor Co Ltd
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Filing: 1991-05-16
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Granted: —
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Expires: 2011-05-16
Abstract
Abstract This invention has its purpose to present a regenerative brake device to increase its regenerative brake power at the time of high-speed driving, without impairing driving comfort. A regenerative brake device according to the present invention comprises a driving wheel linked with a rotary shaft of an electric motor through a power transmission system and a battery charging circuit provided between said electric motor and a set of batteries to switch on and off and execute its regenerative braking in correspondence to the duty factor of control pulse signals input from the battery charging circuit and characterized in that the duty factor of control pulse signals input to said battery charging circuit decreases in correspondence to increases in the rotation rate of the rotary shaft of said electric motor to cause braking not exceeding a predetermined level as the rotation of said shaft increases. <IMAGE>
Inventors
- 👤 Yoshinori Kawashima
- 👤 Kenji Tamaki
- 👤 Shoji Motodate
- 👤 Yoshihiro Nakazawa
- 👤 Masayuki Toriyama
- 👤 Noriyuki Maeda
- 👤 Yoshimi Osanai
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 20:37
CPC Classifications
B; B60; B60L; B60L7/00; B60L7/10; B60L50/00; B60L50/50; B60L50/51; F; F16; F16D; F16D43/00; F16D43/02; F16D43/04; F16D43/14; F16D43/18; F16D43/30; F16D2043/145; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/70
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
115 words
A regenerative brake device for an electric motor vehicle comprising a driving wheel and an electric motor linked with each other through a power transmission system and a battery charging circuit provided between said electric motor and a battery to switch on and off and effect regenerative braking in correspondence to a duty factor of control pulse signals input thereto and characterized in that a duty factor of control pulse signals input to said battery charging circuit is set to be small in a high-speed range so that braking torque increases with increase in the rotation rate of the shaft of said electric motor, but does not exceed a predetermined level at the high-speed range.
Claim 2
Dependent Claim
27 words
A regenerative brake device as claimed in claim 1, wherein the duty factor decreases with increase in rotation speed within a lower-speed range than said high-speed range.
Claim 3
Dependent Claim
48 words
A regenerative brake device as claimed in claim 1 or 2, wherein said device has provided in said power transmission system a primary clutch means arranged to disengage said power transmission system when the rotation of the shaft of said electric motor slows down below a predetermined speed.
Claim 4
Dependent Claim
78 words
A regenerative brake device as claimed in claim 3, wherein said power transmission system comprises a secondary clutch means in parallel with said primary clutch means and connected to rotate at a rate corresponding to the rotation of said driving wheel, said secondary clutch means being arranged to engage said power transmission system at a clutch rotation speed slower than that at which the primary clutch means engages and to remain engaged at speeds higher than the latter.
Claim 5
Dependent Claim
39 words
A regenerative brake device as claimed in claim 1, 2, 3 or 4 wherein said power transmission system comprises a continuously variable transmission to effect regenerative braking with said battery charging circuit while shifting to a high reduction ratio.
Claim 6
Dependent Claim
99 words
A power transmission device for an electric motor vehicle with a motor and a driving wheel linked to each other to transmit power therebetween, comprising provided in parallel a primary clutch means arranged to engage a power transmission means between said motor and driving wheel in a state exceeding a predetermined primary rotational speed to transmit a driving torque from said motor to said driving wheel and a secondary clutch means arranged to engage said power transmission means in a state exceeding a predetermined secondary rotational speed slower than said predetermined primary rotational speed of said primary clutch means.
Claim 7
Dependent Claim
46 words
A power transmission device as claimed in claim 6 wherein said wherein said primary clutch means is coupled to said motor and is arranged to disengage said power transmission means when the rotation of the shaft of said electric motor slows down below a predetermined speed.
Claim 8
Dependent Claim
68 words
A power transmission device as claimed in claim 6 or 7 wherein said secondary clutch means is connected to rotate at a rate corresponding to the rotation of said driving wheel, said secondary clutch means being arranged to engage said power transmission means at a clutch rotation speed slower than that at which the primary clutch means engages and to remain engaged at speeds higher than the latter.
Claim 9
Dependent Claim
23 words
A power transmission device as claimed in claim 6, 7 or 8 wherein said power transmission means comprises a belt-driven continuously variable transmission.
References Cited (Backward Citations)
No citation records indexed.
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