Patent US416596A successfully refreshed from Google Patents.
EP0508367A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A braking control system for an electric vehicle
Assignee: Honda Motor Co Ltd
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Filing: 1992-04-07
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Granted: —
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Expires: 2012-04-07
Abstract
Abstract A regenerative braking control system consumes energy generated in a period corresponding to an angle ϑ₁ which starts in a half of a period of an AC voltage produced in a drive motor during the braking of the drive motor. The regenerative braking control system also consumes energy generated in a period corresponding to an angle ϑ₂ that ends at the end of a half of a period of the AC voltage. The regenerative rate of braking control system utilizes a current induced in the driving coils of the drive motor at the end of the period corresponding to the angle ϑ₁ to recharge a battery. By utilizing two periods to carry out the regenerative braking process, the recharging energy and the braking force can be controlled individually. Moreover, a controller monitors the electric control system to determine whether a malfunction is present. If a malfunction is detected, an electrical brake electrically brakes the drive motor. This electrical braking after the detection of a malfunction in the electrical system provides satisfactory controllability of the electric vehicle.
Inventors
- 👤 Masayuki c/o Kabushiki Kaisha Honda Toriyama
- 👤 Kenji c/o Kabushiki Kaisha Honda Tamaki
- 👤 Satoshi c/o Kabushiki Kaisha Honda Honda
- 👤 Shoji c/o Kabushiki Kaisha Honda Motodate
- 👤 Yoshihiro c/o Kabushiki Kaisha Honda Nakazawa
- 👤 Takaaki c/o Kabushiki Kaisha Honda Fujii
- 👤 Shigemi c/o Kabushiki Kaisha Honda Sasaki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 15:19
CPC Classifications
B; B60; B60L; B60L3/00; B60L3/0023; B60L50/00; B60L50/50; B60L50/52; B60L7/00; B60L7/10; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/70
Claims Analysis
Total Claims: 49
Claim 1
Independent Claim
86 words
A regenerative braking control system for an electric vehicle using an electric motor with coils and a battery comprising: braking period means for establishing a braking period, said braking period starting and ending within a half of a period of an AC voltage generated in coils of the electric motor; regenerative means for directing an induced current corresponding to energy accumulated in the coils at the end of said braking period to the battery; and energy consuming means for consuming energy generated during said braking period.
Claim 2
Dependent Claim
57 words
The regenerative braking control system as claimed in claim 1, wherein said braking period is shortened gradually with an increase in motor speed of the electric motor until the motor speed reaches a predetermined value, and said braking period is lengthened gradually with an increase in motor speed after the motor speed has exceeded the predetermined value.
Claim 3
Dependent Claim
26 words
The regenerative braking control system as claimed in claim 1, wherein a starting time of said braking period is determined according to a required braking force.
Claim 4
Dependent Claim
30 words
A regenerative braking control system as claimed in claim 1, wherein an ending time of the braking period is to be ended is determined according to a required recharging energy.
Claim 5
Dependent Claim
26 words
A regenerative braking control system as claimed in claim 3, wherein an ending time of the braking period is determined according to a required recharging energy.
Claim 6
Dependent Claim
26 words
A regenerative braking control system as claimed in claim 2, wherein an ending time of the braking period is determined according to a required recharging energy.
Claim 7
Dependent Claim
129 words
A regenerative braking control system for an electric vehicle using an electric motor with coils and a battery comprising: first braking period determining means for establishing a first braking period, said first braking period starting at a half of a period of an AC voltage generated in the coils of the electric motor; second braking period means for establishing a second braking period, said second braking period ending at a half of a period of the AC voltage generated in the coils of the electric motor; regenerative means for directing an induced current corresponding to energy accumulated at an end of said first braking period to the battery; and energy consuming means for consuming energy generated in said first braking period and energy generated in said second braking period.
Claim 8
Dependent Claim
69 words
The regenerative braking control system as claimed in claim 7, wherein a sum of said first and second braking periods is shorter gradually with an increase in motor speed of the electric motor until the motor speed reaches a predetermined value, and said sum of said first and second braking periods is lengthened gradually with an increase in motor speed after the motor speed has exceeded the predetermined value.
Claim 9
Dependent Claim
27 words
The regenerative braking control system as claimed in claim 7, wherein a starting time of said second braking period is determined according to a required braking force.
Claim 10
Dependent Claim
72 words
The regenerative braking control system as claimed in claim 7, wherein the first braking period starts from a zero voltage of the AC voltage and is ended within an initial half of the half of the period of the Ac voltage, and the second braking period ends at a zero voltage of the AC voltage and is started within a latter half of the half of the period of the AC voltage.
Claim 11
Dependent Claim
27 words
The regenerative braking control system as claimed in claim 7, wherein an ending time of said first braking period is determined according to a required recharging energy.
Claim 12
Dependent Claim
79 words
A braking control system for an electric vehicle using an electric motor with coils and a battery comprising: braking period means for establishing a braking period, said braking period starting from a predetermined voltage within a half of a period of an AC voltage produced in the coils and ending at a zero voltage of the AC voltage generated in the coils of the electric motor; and energy consuming means for consuming energy generated in said second braking period.
Claim 13
Dependent Claim
27 words
The regenerative braking control system as claimed in claim 9, wherein an ending time of said first braking period is determined according to a required recharging energy.
Claim 14
Dependent Claim
27 words
The regenerative braking control system as claimed in claim 10, wherein an ending time of said first braking period is determined according to a required recharging energy.
Claim 15
Dependent Claim
52 words
The regenerative braking control system as claimed in claim 7, wherein said first braking period is ended within an initial half of the half of the period of the AC voltage, and said second braking period is started within a latter half of the half of the period of the AC voltage.
Claim 16
Dependent Claim
23 words
The braking control system as claimed in claims 7 or 12, wherein said braking period means short circuits the coils of the motor.
Claim 17
Dependent Claim
28 words
The regenerative braking control system as claimed in claim 7, wherein said first braking period is shortened gradually with an increase in motor speed of the electric motor.
Claim 18
Dependent Claim
23 words
The regenerative braking control system as claims in claim 7, wherein said first braking period is shortened with a rise in battery voltage.
Claim 19
Dependent Claim
36 words
The regenerative braking control system as claimed in any one of claims 1-6 further comprising: chopping means for chopping said braking period so that said braking period consists of a plurality of intermittent short braking periods.
Claim 20
Dependent Claim
35 words
The regenerative braking control system as claimed in claim 7, further comprising: chopping means for chopping said first braking period so that said first braking period consists of a plurality of intermittent short braking periods.
Claim 21
Dependent Claim
32 words
The regenerative braking control system as claimed in claim 7, wherein said first braking period starts at a start of braking and said second braking period ends at an end of braking.
Claim 22
Independent Claim
86 words
A method for controlling a braking system for an electric vehicle using an electric motor with coils and a battery, comprising the steps of: (a) establishing a braking period which starts and ends within a half of a period of an AC voltage produced in the coils of the electric motor; (b) recharging the battery using an induced current corresponding to energy stored in the coils at the end of the braking period established in step (a); and (c) consuming energy generated during the braking period.
Claim 23
Dependent Claim
59 words
The control method as claimed in claim 22, wherein said step (a) shortens the braking period gradually with an increase in motor speed of the electric motor until the motor speed reaches a predetermined value, and said step (a) lengthens the braking period gradually with an increase in motor speed after the motor speed has exceeded the predetermined value.
Claim 24
Dependent Claim
31 words
The control method as claimed in claim 22, wherein a starting time of the braking period is established in said step (a) according to a magnitude of a required braking force.
Claim 25
Dependent Claim
30 words
The control method as claimed in claim 22, wherein an ending time of the braking period is established in said step (a) according to an amount of required recharging energy.
Claim 26
Dependent Claim
37 words
The control method as claimed in claim 22, further comprising the step of: (d) chopping the braking period established by said step (a) so that the braking period consists of a plurality of intermittent short braking periods.
Claim 27
Independent Claim
122 words
A method for controlling a regenerative braking system for an electric vehicle using an electric motor with coils and a battery, comprising the steps of: (a) establishing a first braking period which starts within a half of a period of an AC voltage produced in the coils of the electric motor; (b) establishing a second braking period which ends within a half of a period of the AC voltage produced in the coils of the electric motor; (c) recharging the battery using an induced current corresponding to energy stored in the coils at an end of the first braking period; (d) consuming energy remaining at an end of the first braking period; and (e) consuming energy generated during the second braking period.
Claim 28
Dependent Claim
63 words
The control method as claimed in claim 27, wherein a sum of the first braking period and the second braking period is diminished gradually with an increase in motor speed of the electric motor until the motor speed reaches a predetermined value, and the sum is increased gradually with an increase in motor speed after the motor speed has exceeded the predetermined value.
Claim 29
Dependent Claim
25 words
The control method as claimed in claim 27, wherein a starting time for the second braking period is established according to a required braking force.
Claim 30
Dependent Claim
29 words
The control method as claimed in claims 27 or 29, wherein an ending time for the first braking period is established according to an amount of required recharging energy.
Claim 31
Dependent Claim
50 words
The control method as claimed in claim 30, wherein the first braking period is ended within an initial half of the half of the period of the AC voltage, and the second braking period is started within a latter half of the half of the period of the AC voltage.
Claim 32
Dependent Claim
28 words
The control method as claimed in claims 27 or 28, wherein the first braking period is shortened gradually with an increase in motor speed of the electric motor.
Claim 33
Dependent Claim
26 words
The control method as claimed in claims 27 or 28, wherein the first braking period is shortened with an increase in a voltage of the battery.
Claim 34
Dependent Claim
26 words
The control method as claimed in claims 27 or 28, wherein the second braking period is lengthened with an increase in a voltage of the battery.
Claim 35
Dependent Claim
39 words
The control method as claimed in claim 27, further comprising the step of: (f) chopping the first braking period established by said step (a) so that the first braking period consists of a plurality of intermittent short braking periods.
Claim 36
Dependent Claim
53 words
A controller for an electric vehicle driven by an electric motor which speed is controlled according to a voltage comprising: monitor means for monitoring functions of the electric vehicle to detect a malfunction therein; and electrical braking means for electrically braking the drive motor when a malfunction is detected by said monitor means.
Claim 37
Dependent Claim
75 words
A controller for an electric vehicle driven by an electric motor which speed is controlled according to a voltage comprising: monitor means for monitoring functions of the electric vehicle to detect a malfunction therein; and correcting means for generating a corrected voltage by gradually decreasing the voltage for controlling speed when the malfunction is detected by said monitor means; said correcting means supplying said corrected voltage to the electric motor when the malfunction is detected.
Claim 38
Dependent Claim
31 words
The controller as claimed in claim 37, further comprising: electric braking means for electrically braking the electric motor; said electric braking means being applied when said corrected voltage is zero volts.
Claim 39
Dependent Claim
147 words
A controller for an electric vehicle driven by an electric motor which speed is controlled by a voltage comprising: first monitor means for detecting a first malfunction in the electric vehicle, said first malfunction immediately affecting other functions of the electric vehicle from being performed normally; second monitor means for detecting a second malfunction in the electric vehicle, said second malfunction allowing other functions of the electric vehicle to be performed normally; electric braking means for electrically braking the electric motor; and correcting means for generating a corrected voltage by gradually decreasing the voltage which controls the speed when said second malfunction is detected by said second monitor means; said electric braking means being actuated when said first malfunction is detected by said first monitor means; said correcting means applying said corrected voltage to the electric motor to control the speed when said second malfunction is detected.
Claim 40
Dependent Claim
22 words
The controller as claimed in claim 39, wherein said electric braking means is actuated when said corrected voltage decreases to zero volts.
Claim 41
Dependent Claim
18 words
The controller as claimed in claims 36, 38, 39, or 40, wherein said electric braking is dynamic braking.
Claim 42
Dependent Claim
18 words
The controller as claimed in claims 36, 38, 39, or 40, wherein said electric braking is regenerative braking.
Claim 43
Independent Claim
52 words
A method for controlling an electric vehicle driven by an electric motor which speed is controlled according to a voltage, comprising the steps of: (a) monitoring functions of the electric vehicle to detect a malfunction therein; and (b) electrically braking the drive motor when a malfunction is detected in said step (a).
Claim 44
Independent Claim
73 words
A method for controlling an electric vehicle driven by an electric motor which speed is controlled according to a voltage, comprising the steps of: (a) monitoring functions of the electric vehicle to detect a malfunction therein; (b) generating a corrected voltage by gradually decreasing the voltage for controlling speed when the malfunction is detected by said step (a); and (c) supplying the corrected voltage to the electric motor when the malfunction is detected.
Claim 45
Dependent Claim
25 words
The method as claimed in claim 44, further comprising the steps of: (d) electrically braking the electric motor when the corrected voltage is zero volts.
Claim 46
Independent Claim
130 words
A method for controlling an electric vehicle driven by an electric motor which speed is controlled by a voltage, comprising the steps of: (a) detecting a first malfunction in the electric vehicle, the first malfunction immediately affecting other functions of the electric vehicle from being performed normally; (b) detecting a second malfunction in the electric vehicle, the second malfunction allowing other functions of the electric vehicle to be performed normally; (c) generating a corrected voltage by gradually decreasing the voltage which controls the speed when the second malfunction is detected in said step (b); (d) applying the corrected voltage to the electric motor to control the speed when the second malfunction is detected; and (e) electrically braking the electric motor when the first malfunction is detected in said step (a).
Claim 47
Dependent Claim
22 words
The method as claimed in claim 46, further comprising the step of: (f) electrically braking when the corrected voltage is zero volts.
Claim 48
Independent Claim
18 words
The method as claimed in claims 43, 44, 45, or 46, wherein the electrical braking is dynamic braking.
Claim 49
Independent Claim
18 words
The method as claimed in claims 43, 44, 45, or 46, wherein the electrical braking is regenerative braking.
References Cited (Backward Citations)
No citation records indexed.
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