EP0543390A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Drive control apparatus of series hybrid vehicle
Assignee: Toyota Motor Corp
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Filing: 1992-11-20
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Granted: —
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Expires: 2012-11-20
Abstract
Abstract A hybrid series vehicle includes an engine (10), a generator (12), a battery (26) and a motor (14). The generator (12) is activated by electricity from the engine (10) so as to drive the motor (14). The battery (26) is charged by the electricity from the generator, being discharged so as to provide a voltage to the motor (14). In other words, the motor (14) is also activated by discharging electricity from the battery (26). There are three modes for activating the motor (14), i.e. a mode for activating the motor (14) only by the battery (26), a mode for activating it only by the generator (12), and a mode for activating it both by the battery (26) and the generator (12). The motor activating modes will be selected depending upon a required motor output. An output voltage of the generator (12) is determined so as to derive the required output according to the selected mode. The generator (12) is of a type which can output a voltage according to a field current. The field current of the generator (12) is controlled so as to obtain the required output voltage.
Inventors
- 👤 Masayuki Furutani
- 👤 Yoshihide Nii
- 👤 Kohsuke Suzui
- 👤 Yoshiyuki Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 08:15
CPC Classifications
B; B60; B60K; B60K6/00; B60K6/20; B60K6/42; B60K6/46; B60L; B60L50/00; B60L50/50; B60L50/60; B60L50/61; H; H02; H02J; H02J7/00; H02J7/14; H02J7/1415; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/62; Y02T10/70; Y02T10/7072; Y10; Y10S; Y10S903/00; Y10S903/902; Y10S903/903; Y10S903/904; Y10S903/915; Y10S903/917
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
179 words
For use with a series hybrid vehicle having an engine (10), a generator (12) to be activated by an output of said engine (10) so as to generate a voltage according to a field current, a battery (26) to be charged by an output voltage of said generator (12) and to be discharged so as to supply a voltage to a motor (14), and the motor (14) to be activated by the output voltage from said generator (12) and/or the voltage supplied from said battery (26), a drive control apparatus (29) performing: selecting a mode to activate said motor (14) solely by said battery (26), a mode to activate said motor (14) solely by said generator (12), or a mode to activate said motor (14) by said generator (12) and said battery (26) according to a required motor output; determining an output voltage of said generator (12) according to the selected motor activating mode so as to obtain the required motor output; and controlling a field current of said generator (12) so as to obtain the determined output voltage.
Claim 2
Dependent Claim
85 words
A drive control apparatus (29) according to claim 1 controls a field current of said generator (12) based on detected values of an output voltage of said generator (12), outout current of said battery (26), and engine speed of said engine (10) so as to obtain the determined output voltage by using a means (32) for detecting the output voltage of said generator (12), a means (30) for detecting an output current of said battery (26), and a means (36) for detecting an engine speed.
Claim 3
Dependent Claim
89 words
A drive control apparatus (29) according to claim 1 controls the field current of said generator (12) based on the detected values of the output voltage and the output current of said generator (12), and the output current of said battery (26) so as to obtain the determined output voltage by using a means (32) for detecting an output voltage of said generator (12), a means (30) for detecting an output current of said battery (26) and a means (34) for detecting an output current of said generator (12).
Claim 4
Dependent Claim
54 words
A drive control apparatus (29) according to claim 1 controls the amount of fuel to be injected into said engine; wherein said engine (10) has its speed and output corresponding to each other on a one-to-one basis within a preset engine speed range, and has its speed controlled by the amount of fuel injection.
Claim 5
Dependent Claim
36 words
A drive control apparatus (29) according to claim 1 determines a mode for activating said motor (14) with reference to an output supplying map which shows a correspondence between required motor outputs and motor activating modes.
Claim 6
Dependent Claim
165 words
A drive control apparatus (29) according to claim 5 controls the amount of fuel injection into said engine (10); wherein said engine (10) has its speed and output corresponding to each other on a one-to-one basis within a preset engine speed range and has high efficiency, and has its speed controlled by the amount of fuel injection; and wherein said output supplying map specifies a region which corresponds to the mode for activating said motor (14) solely by said generator (14) so as to obtain the required output within the preset engine speed range, a region which corresponds to the mode for activating said motor (14) solely by said battery (26) so as to obtain the required output in a range below the present engine speed range, and a region which corresponds to the mode for activating said motor (14) both by said generator (14) and said battery (26) so as to obtain the required output in a range above the present engine speed range.
Claim 7
Dependent Claim
26 words
A drive control apparatus (29) according to claim 6, wherein said present engine speed range is plotted based on a simulated travelling condition of the vehicle.
Claim 8
Dependent Claim
53 words
A drive control apparatus (29) according to claim 1, wherein said motor (14) is an a.c. motor to be activated by a.c. voltage, and wherein the hybrid vehicle includes an invertor (18) for converting an output voltage of said generator (14) and/or a voltage supplied from said battery (26) into an a.c. voltage.
Claim 9
Dependent Claim
50 words
A drive control apparatus (29) according to claim 8 determines a command value according to an extent of driver's request, and controls said invertor (18) according to the determined command value so as to select a motor activating mode by using the determined command value as the required motor output.
Claim 10
Dependent Claim
154 words
A drive control apparatus (29) according to claim 1 uses a means (32) for detecting an output voltage of said generator (12), a means (30) for detecting an output current of said battery (26), and a means for controlling charging of said battery (26) by controlling the field current of said generator (12) so as to execute charge control of said battery (26) so that a product of the detected output voltage of said generator (12) and the detected output current of said battery (26) is equal to a sum of power to be supplied to said motor (14) and target charging power, and discharge control of said battery (26) is executed so that a product of the detected output voltage of said generator (12) and the detected output current of said battery (26) is equal to a difference between the power to be supplied to said motor (14) and the target discharging power.
Claim 11
Dependent Claim
41 words
A drive control apparatus (29) according to claim 10 controls charging and discharging of said battery (26) according the detected output current value of said generator (12) by using a means (34) for detecting an output current of said generator (12).
Claim 12
Dependent Claim
57 words
A drive control apparatus (29) according to claim 1 detects an output voltage of said generator (12) by using a means (32) for detecting an output voltage of said generator (12) and interrupts the field current of said generator (12) when the output voltage of said generator (12) is equal to or larger than a preset value.
Claim 13
Dependent Claim
27 words
A drive control apparatus (29) according to claim 12 resets energy remaining in said generator (12) after the interruption of said field current in said generator (12).
Claim 14
Dependent Claim
31 words
A drive control apparatus (29) according to claim 13 resets the residual energy in said generator (12) by powering said motor (14) so that said motor (14) consumes the residual energy.
Claim 15
Dependent Claim
75 words
A drive control apparatus according to claim 14, wherein said motor (14) is activated by a.c. power, the series hybrid vehicle includes an invertor (18) for converting an output voltage of said generator (12) and/or a voltage supplied from said battery (26) into an a.c. voltage which is supplied to said motor (14), and wherein said drive control means (29) controls the conversion operating of said invertor (18) so as to power said motor (14).
References Cited (Backward Citations)
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