Combination battery charger and battery driven power supply
First Claim
1. A charging device for charging a secondary battery, comprising:
- charging means for performing a charging action on the secondary battery;
power supplying means for supplying power to a load device connected to said charging device;
mode change-over means for selecting between a charge mode in which the charging action on the secondary battery is performed and a discharge mode in which power is supplied to the load device; and
control means for, when the charge mode is selected by said mode change-over means, causing said charging means to perform the charging action on the secondary battery and for, when the discharge mode is selected by said mode change-over means, causing said power supplying means to supply power from said secondary battery to the load device in a state in which the secondary battery is mounted on said charging device,said charging device further comprising dropped-voltage state detecting means for detecting a dropped-voltage state of the secondary battery, wherein said control means allows a mode to be set as selected by said mode change-over means when the secondary battery is decided to be not in the dropped-voltage state by said dropped-voltage state detecting means, and causes said charging means to perform the charging action on the secondary battery irrespectively of a state of said mode change-over means when the secondary battery is decided to be in the dropped-voltage state by said dropped-voltage state detecting means.
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Accused Products
Abstract
A charging device includes a charging circuit for performing a charging action on a secondary battery, a power supplying circuit for supplying power to a load device connected to the charging device, a mode change-over circuit for selection from between a charge mode in which the charging action on the secondary battery is performed and a discharge mode in which power is supplied to the load device, and a control circuit for, when the charge mode is selected by the mode change-over circuit, causing the charging circuit to perform the charging action on the secondary battery and for, when the discharge mode is selected by the mode change-over circuit, causing the power supplying circuit to supply power from the secondary battery to the load device in a state in which the secondary battery is mounted on the charging device.
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Citations
15 Claims
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1. A charging device for charging a secondary battery, comprising:
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charging means for performing a charging action on the secondary battery; power supplying means for supplying power to a load device connected to said charging device; mode change-over means for selecting between a charge mode in which the charging action on the secondary battery is performed and a discharge mode in which power is supplied to the load device; and control means for, when the charge mode is selected by said mode change-over means, causing said charging means to perform the charging action on the secondary battery and for, when the discharge mode is selected by said mode change-over means, causing said power supplying means to supply power from said secondary battery to the load device in a state in which the secondary battery is mounted on said charging device, said charging device further comprising dropped-voltage state detecting means for detecting a dropped-voltage state of the secondary battery, wherein said control means allows a mode to be set as selected by said mode change-over means when the secondary battery is decided to be not in the dropped-voltage state by said dropped-voltage state detecting means, and causes said charging means to perform the charging action on the secondary battery irrespectively of a state of said mode change-over means when the secondary battery is decided to be in the dropped-voltage state by said dropped-voltage state detecting means. - View Dependent Claims (2, 3, 4, 5)
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6. A charging device comprising:
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charging means for charging a secondary battery connected to said charging device; selecting means for selecting between a first mode to charge the secondary battery and a second mode to supply power from the secondary battery to a load device, wherein said charging device displays both of a charged state of the secondary battery and a power supply state of the secondary battery on a single display device and displays the charged state with light of a first color and the power supply state with light of a second color different from the first color. - View Dependent Claims (7, 8)
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9. A charging device having a function of performing a charging action on a detachably mountable secondary battery and a function of switching between the charging action and a secondary battery driving action in which power is supplied from the secondary battery to a load device connected to said charging device, wherein said charging device allows a plurality of secondary batteries to be mounted thereon for the charging action and the secondary battery driving action, and wherein in the secondary battery driving action, the plurality of secondary batteries are continuously usable by serially switching the plurality of secondary batteries or by connecting the plurality of secondary batteries in parallel,
said charging device further comprising a change-over switch for switching of order of priority of using the plurality of secondary batteries mounted on said charging device for the charging action or the secondary battery driving action.
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12. A method for controlling a charging device having a first mode to charge a secondary battery and a second mode to supply power from the secondary battery to a load device, said method comprising steps of
selecting between the first mode and the second mode, and displaying both of a charged state of the secondary battery and a power supplying state of the second battery on a single display device, displaying the charged state with light of a first color and the power supplying state with light of a second color different from the first color.
Specification