OUTPUT CONNECTOR EQUIPPED BATTERY PACK, BATTERY-PACK-AND-BATTERY-DRIVEN-DEVICE SYSTEM, AND CHARGING METHOD BY USING BATTERY PACK
First Claim
1. A battery pack comprising:
- an output connector which can be connected to a battery-driven device, and supply electric power to a device-side rechargeable battery included in this battery-driven device;
a rechargeable battery cell; and
a power supply control circuit which converts a voltage from said rechargeable battery cell into an output voltage,wherein the output voltage converted by said power supply control circuit can be provided through said output connector,wherein said output connector includes a power supply terminal portion and a data terminal portion,wherein a current required for the battery-driven device connected to said output connector can be supplied through said power supply terminal portion,wherein a terminal voltage on the data terminal portion can be switched between different voltages based on a current which is drawn by the battery-driven device through said power supply terminal portion.
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Accused Products
Abstract
An output connector 20 includes a power supply terminal portion 20A′ and a data terminal portion 20A″. The power supply terminal portion 20A′ can supply a current required for a battery-driven device connected to the output connector 20. The data terminal portion 20A″ can switch the terminal voltage of this data terminal portion 20A″ between different voltages based on a current which is drawn by the battery-driven device through the power supply terminal portion 20A′. A power supply control circuit can detect the current value of current which is drawn by battery-driven devices so that the battery pack can switch the data terminal portion based on the detected data between the different voltages. Therefore, even single battery pack can supply electric power to a plurality of types of battery-driven devices.
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Citations
15 Claims
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1. A battery pack comprising:
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an output connector which can be connected to a battery-driven device, and supply electric power to a device-side rechargeable battery included in this battery-driven device; a rechargeable battery cell; and a power supply control circuit which converts a voltage from said rechargeable battery cell into an output voltage, wherein the output voltage converted by said power supply control circuit can be provided through said output connector, wherein said output connector includes a power supply terminal portion and a data terminal portion, wherein a current required for the battery-driven device connected to said output connector can be supplied through said power supply terminal portion, wherein a terminal voltage on the data terminal portion can be switched between different voltages based on a current which is drawn by the battery-driven device through said power supply terminal portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A battery-pack-and-battery-driven-device system comprising:
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a battery-driven device; and a battery pack which can be connected to said battery-driven device and can supply electric power to said battery-driven device, wherein said battery-driven device includes a device-side rechargeable battery, an input connector through which the electric power supply can be supplied, and a device charge control circuit which determines whether the battery pack can supply electric power to said device-side rechargeable battery whereby charging said device-side rechargeable battery after the battery pack is connected to said input connector, the device charge control circuit controlling the electric power, which is supplied from this battery pack, whereby charging said device-side rechargeable battery if determining that the battery pack can supply electric power, wherein said battery pack includes a rechargeable battery cell, a power supply control circuit which adjusts electric power depending on said battery-driven device, and an output connector through which the adjusted electric power is supplied, wherein said output connector includes a power supply terminal portion and a data terminal portion, wherein said power supply control circuit can change a voltage on said data terminal portion to different voltages, and said power supply control circuit has a plurality of terminal voltage selection modes which correspond to the different voltages for said data terminal portion, wherein said power supply control circuit selects from among the terminal voltage selection modes based on the charging current which is drawn by the battery-driven device, which is connected through said input connector to said output connector.
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13. A charging method for charging a device-side rechargeable battery included in a battery-driven device by using a battery pack which can be connected to the battery-driven device, the method comprising:
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connecting the battery-driven device to an output connector of said battery pack; allowing the battery-driven device to start drawing current required for the battery-driven device from a rechargeable battery cell included in said battery pack through a power supply terminal portion included in said output connector; detecting this current by a power supply control circuit included in said battery pack; and switching the voltage of a data terminal portion included in said output connector between predetermined voltages by said power supply control circuit based on the value of the current, which is detected by said power supply control circuit, by referring a predetermined relationship between current value and terminal voltage. - View Dependent Claims (14, 15)
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Specification