PORTABLE CHARGING APPARATUS, CHARGING METHOD THEREOF, AND CHARGING SYSTEM
First Claim
1. A charging system, the system comprising:
- an external charging device with a Universal Serial Bus (USB) interface, for supplying electric power to charge a battery;
a portable charging apparatus comprising a first interface connected to the external charging device, a second interface connected to a mobile communication terminal, and a switch for connecting or for disconnecting the data lines according to whether the portable charging apparatus is connected to the external charging device, wherein the switch is disposed between data lines for USB communication; and
a mobile communication terminal, connected to the second interface, for charging the battery via at least one of the external charging device and the portable charging apparatus.
1 Assignment
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Accused Products
Abstract
A portable charging apparatus, charging method and system for charging a battery of a mobile communication terminal are provided. The portable charging apparatus includes a first Universal Serial Bus (USB) interface connected to an external charging device, a second USB interface connected to a mobile communication terminal, and a switch located between data lines for USB communication. The method includes determining whether the portable charging apparatus is connected to the external charging device, switching on the switch when the portable charging apparatus is not connected to the external charging device, and determining whether the portable charging apparatus is connected to the mobile communication terminal, and supplying electric power from an additional battery of the portable charging apparatus to the mobile communication terminal when the portable charging apparatus is connected to the mobile communication terminal.
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Citations
17 Claims
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1. A charging system, the system comprising:
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an external charging device with a Universal Serial Bus (USB) interface, for supplying electric power to charge a battery; a portable charging apparatus comprising a first interface connected to the external charging device, a second interface connected to a mobile communication terminal, and a switch for connecting or for disconnecting the data lines according to whether the portable charging apparatus is connected to the external charging device, wherein the switch is disposed between data lines for USB communication; and a mobile communication terminal, connected to the second interface, for charging the battery via at least one of the external charging device and the portable charging apparatus. - View Dependent Claims (2, 3, 4, 5)
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6. A charging method of a portable charging apparatus comprising a first Universal Serial Bus (USB) interface connected to an external charging device, a second USB interface connected to a mobile communication terminal, and a switch located between data lines for USB communication, the method comprising:
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determining whether the portable charging apparatus is connected to the external charging device; switching on the switch when the portable charging apparatus is not connected to the external charging device, and determining whether the portable charging apparatus is connected to the mobile communication terminal; and supplying electric power from an additional battery of the portable charging apparatus to the mobile communication terminal when the portable charging apparatus is connected to the mobile communication terminal. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. A portable charging apparatus, the apparatus comprising:
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a first Universal Serial Bus (USB) interface, connected to an external charging device; a second USB interface, connected to a mobile communication terminal; an additional battery for supplying electric power to the mobile communication terminal via the second USB interface; a switch, located between data lines of the first USB interface, for connecting or for disconnecting the data lines; an external device sensor for detecting the connection of the external charging device and for transmitting a detected signal of the connection of the external charging device to a control terminal of the switch, wherein the switch is switched off or switched on according to the detected signal; a boost converter for receiving a voltage of the additional battery, for boosting the received voltage to a preset level and for outputting the boosted voltage; a charging unit for charging the additional battery; an electric power supply switch for supplying the electric power or for stopping the supply of the electric power from the external charging device to the mobile communication terminal; and a controller for supplying electric power from the additional battery to the mobile communication terminal by enabling the boost converter when the second USB interface is connected to the mobile communication terminal and the first USB interface is not connected to the external charging device, for supplying electric power from the external charging device to the mobile communication terminal when a battery of the mobile communication terminal is not fully charged and the first USB interface and the second USB interface are connected to the external charging device and the mobile communication terminal, respectively, and for charging the additional battery via the external charging device by enabling the charging unit when the first USB interface is connected to the external charging device and the second USB interface is not connected to the mobile communication terminal or when the battery of the mobile communication terminal is fully charged and the first interface and the second USB interface are connected to the external charging device and the mobile communication terminal, respectively, wherein the controller comprises a detection terminal to which the detected signal of the connection of the external charging device is input. - View Dependent Claims (14, 15, 16, 17)
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Specification