Adapter for external battery and battery system
First Claim
1. A system comprising an adapter for a chargeable external battery in combination with a charger, said adapter being provided for selectively connecting the chargeable external battery to a computer or the charger, the charger comprising a constant current source, and the adapter comprising:
- A) a battery connector having a common terminal for connecting the adapter to the chargeable external battery;
B) an external device connector including a through terminal which is connected to the common terminal of the battery connector, a power output terminal for outputting power from the external battery, and a power input terminal which is independent of the power output terminal for receiving a current from the constant current source for charging the external battery;
C) a first diode provided in a current path between the power output terminal and the battery connector so as to selectively conduct current from the external battery only to the power output terminal; and
D) a second diode provided between the power input terminal and the battery connector so as to selectively conduct current from the power input terminal only to the external battery.
1 Assignment
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Accused Products
Abstract
An adapter for selectively connecting an external battery which is used as a power source of a portable notebook type computer to the computer or to a charger, and an external battery system for controlling the connection between the adapter, the computer and the charger. The external battery is connectable to the adapter, and the adapter is connected to either the charger or the computer. A diode for selectively regulating either the direction for charging the external battery or the direction for introducing the power from the external battery is provided within the adapter. The adapter, the charger and the computer are selectively connected with each other by a common cable.
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Citations
13 Claims
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1. A system comprising an adapter for a chargeable external battery in combination with a charger, said adapter being provided for selectively connecting the chargeable external battery to a computer or the charger, the charger comprising a constant current source, and the adapter comprising:
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A) a battery connector having a common terminal for connecting the adapter to the chargeable external battery; B) an external device connector including a through terminal which is connected to the common terminal of the battery connector, a power output terminal for outputting power from the external battery, and a power input terminal which is independent of the power output terminal for receiving a current from the constant current source for charging the external battery; C) a first diode provided in a current path between the power output terminal and the battery connector so as to selectively conduct current from the external battery only to the power output terminal; and D) a second diode provided between the power input terminal and the battery connector so as to selectively conduct current from the power input terminal only to the external battery. - View Dependent Claims (2, 9, 10, 11)
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3. A battery system comprising:
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a chargeable external battery; a battery adapter for supplying a charging current to the external battery and outputting a current from the external battery; a computer including a chargeable internal battery removably installed therewithin and a load for conducting various operations; and an AC/DC adapter including a power output terminal for supplying the charging current in accordance with power from an AC power source; the battery adapter including; a battery connector having a common terminal for connecting the battery adapter to the chargeable external battery; an external device connector having a through terminal which is connected to the common terminal of the battery connector, a power output terminal for outputting power from the external battery, and a power input terminal for receiving the charging current for the external battery; a first diode provided in a current path between the power output terminal and the battery connector so as to selectively apply current from the external battery only to the power output terminal; and a second diode provided between the power input terminal and the battery connector so as to selectively apply current from the power input terminal only to the external battery; the computer including a power input terminal for receiving power to be supplied to the load; a charging current receiving means for receiving a current for charging the internal battery; and a third diode disposed in a current path for supplying current from the internal battery to the load so as to prevent a reverse flow of current from the load to the internal battery; the power output terminal of the battery adapter being connectable to the power input terminal of the computer so as to enable power to be supplied from the external battery to the computer; and the power input terminal of the battery adapter being connectable to the power output terminal of the AC/DC adapter so as to enable the external battery to be charged. - View Dependent Claims (4, 5, 6, 7, 8, 12, 13)
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Specification