JP3081161U - Secondary battery-integrated charger for portable information terminals - Google Patents

Abstract

(57) [Summary] [Purpose] By incorporating a secondary battery into a charger for an information portable terminal and forming an integrated small charger, the secondary battery built into the charger when disconnected from the charging and outlet. It has a function as a support battery that can discharge from the battery. [Configuration] By connecting a charger board 3 and a secondary battery 5 with a connector 4, when the AC power supply 1 is connected, the portable information terminal 9 and the secondary battery 5 are charged and the AC power supply is disconnected. In this case, power is supplied from the charged secondary battery 5 to the portable information terminal 9.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a secondary battery and a charger for a driving power supply of an information portable terminal.

[0002]

[Prior art]

 Conventionally, the driving battery of an information portable terminal is a pack that is housed in a case with a protection circuit attached to the battery, and is used in an integrated state with the terminal body. The charger converts AC electricity to DC electricity, and supplies power to the terminal body and battery. So both are separate.

[0003]

[Problems to be solved by the invention]

 In recent information portable terminals, the amount of data consumed and the current consumption has increased significantly due to the colorization of the display unit. The chargers of various mobile terminals only converted the AC power from the outlet into low voltage DC power and charged the secondary batteries of the terminals. In order to avoid power shortage when moving, it is necessary to carry a spare battery pack or carry a charger and charge somewhere.

[0005]

[Means to solve the problem]

 A rechargeable battery built into a charger for an information portable terminal, which is a support battery that can discharge from the rechargeable battery built into the charger when charging and disconnecting from an outlet by making it a small integrated charger. Was held.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings. When an AC power supply of 100 V is applied from the AC power supply 1 of FIG. 1, it is converted into a low-voltage DC power supply by the charger board 3, and is charged through the DC connector 7 to the built-in secondary battery of the portable information terminal 9 of FIG. Is done. On the other hand, at this time, the lithium ion secondary battery 5 is also charged through the connector 4 at the same time. The lithium ion secondary battery 5 is provided with a protection circuit board 8 to protect it from overcharge, overdischarge, and overcurrent. This protection circuit can be provided in the charger board 3. Therefore, even when the AC power supply 1 is disconnected, the power is supplied from the charged lithium-ion battery 5 to the portable information terminal 9 via the connector 4, the charger board 3 and the DC connector 7, so that the portable terminal 9 can be moved during the movement. However, the driving time can be extended.

[0007]

[Effect of the invention]

 When the battery is being charged from the charger to the battery of the mobile terminal or when the terminal is disconnected from the charger, the secondary battery integrated with the charger can be charged if the charger is connected to the outlet. If you bring a charger, you can use it as a support power supply when moving. Therefore, the driving time of the mobile terminal can be extended even when moving.

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[Procedure amendment]

[Submission date] June 11, 2001 (2001.6.1)
1)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Added

[Correction contents]

[Brief description of the drawings]

Fig. 1 Assembly drawing of secondary battery integrated charger

[Explanation of Codes] AC power supply 2. 2. Inner case with socket Charger board 4. Connector 5. 5. Lithium ion secondary battery Outer case 7. DC connector 8. Protection circuit board

FIG. 2 is a perspective view when the secondary battery-integrated charger and the portable information terminal are connected. Portable information terminal

Claims (1)

[Utility model registration claims] 1. A connecting means for connecting a secondary battery to a charging device for various information portable terminals, a charging means for charging the secondary battery, and a power supply from the secondary battery to various information portable terminals, etc. A secondary battery-integrated battery charger for a portable information terminal, comprising: a discharge unit for supplying the battery; and a protection unit for protecting the secondary battery from overcharge, overdischarge, and overcurrent.