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| Connecting multiple batteries to battery powered devices |
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| Circuit for generating three-phase PWM signal |
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| Voltage regulator with non-linear excitation control |
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| Switching regulator |
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| Real time charging control of a fast battery charger |
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Battery control apparatus for hybrid vehicle
| Details |
Inventors: Kinoshita, Naoki; Shibutani, Atsushi; Kawarada, Nobuyuki; Fujimura, Akira;
Assignee: Honda Giken Kogyo Kabushiki Kaisha (Tokyo, JP)
Primary Examiner: Wong; Peter S.
Assistant Examiner: Toatley Jr.; Gregory J
Attorney, Agent or Firm: Arent Fox Kintner Plotkin & Kahn, PLLC
The present invention provides a battery control apparatus for a hybrid vehicle, which is capable of improving the time of continuous availability for use of the battery by controlling the amount of charge/discharge in accordance with a change in the voltage characteristic of the battery. The hybrid vehicle comprises a combustion engine for outputting driving force of the vehicle, an electric motor for generating a force for assisting the output from the engine, and a battery for supplying power to the motor and for storing energy regenerated by the motor acting as a generator when the assisting force is not required. The battery control apparatus for controlling the battery comprises a remaining battery charge calculator for calculating a remaining charge of the battery, a memory effect detector for detecting the occurrence of the memory effect in the battery, a use permission zone determining device for determining the use permission zone of the remaining charge of the battery in accordance with the occurrence of the memory effect, and a charge/discharge amount controller for controlling an amount of charge/discharge in the use permission zone of the remaining charge of the battery. |
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DETAILED DESCRIPTION The present invention was made in view of the above circumstances, and the object of the present invention is to provide a battery control apparatus for a hybrid vehicle capable of extending the time over which the battery is continuously available, by controlling the amount of charge/discharge depending on a change in the voltage characteristics of the battery.
In the first aspect of the present invention, a battery control apparatus (for example, a battery control apparatus 9 in the embodiment) for a hybrid vehicle with a combustion (an engine 1) for outputting driving force of the vehicle, an electric motor (a motor 2) for generating a force for assisting the output from the engine, and a battery (a battery 8) for supplying power to the motor and for storing energy regenerated by the motor acting as a generator when the assisting force is not required, the battery control apparatus comprising: a remaining battery charge calculator (a remaining battery charge calculating section 91) for calculating a remaining charge of the battery; a memory effect detector (a memory effect detecting section 93) for detecting the occurrence of the memory effect in the battery; a use permission zone determining device (a use permission zone determining section 94) for determining a use permission zone of the remaining charge of the battery in accordance with the occurrence of the memory effect; and a charge/discharge amount controller (a charge/discharge controlling section 92) for controlling an amount of charge/discharge in the use permission zone of the remaining charge of the battery.
With the above described constitution, when the voltage characteristic of the battery change due to the memory effect, the use permission zone of the remaining battery charge can be enlarged.
Accordingly, the effect that the time of continuous availability for use of the battery can be lengthened is obtained.
As a result, it is possible to prevent reductions of the time of continuous availability for the driving force supplementation operation for the engine and the charging operation to the battery by deceleration regeneration
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Electrical and Wave 
