JPH0543463U - Battery device - Google Patents

Abstract

(57) [Summary] [Purpose] The cells 5a to 5d connected in series in the battery pack 1 are configured to be appropriately charged, and the life of the battery device is extended. [Structure] A pair of power supply terminals 3 and 4 and intermediate terminals 6a to 6c are provided on an upper surface 2 of a battery pack 1 accommodating four cells 5a to 5d connected in series, and the cells 5a to 5d connected in series.
The electrodes at both ends are connected to the pair of power supply terminals 3 and 4, and the connecting portions of the plurality of cells 5a to 5d are connected to the intermediate terminals 6a to 6c, respectively.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rechargeable battery device that can be used in various portable electronic devices such as cordless telephones and transceivers.

[0002]

[Prior Art]

 In a conventional battery device of this type, a plurality of cells are connected in series and housed in a battery pack so that a desired voltage can be obtained corresponding to an electronic device to be used. Both end electrodes are connected to a pair of (+-) power supply terminals provided on the surface of the battery pack, and current is supplied to the electronic equipment from the pair of power supply terminals when mounted on the electronic equipment. Has been done.

[0003]

[Problems to be solved by the device]

 When charging such a battery device, it is performed through the power supply terminals of this pair, that is, each cell is charged in the series connection state. However, each cell has "variability" in its characteristics, and overcharged cells and undercharged cells occur. Therefore, when a specific cell becomes defective, there is a problem that the entire battery device becomes defective. The present invention proposes a battery device that solves the above-mentioned problems.

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned problem, in the present invention, a plurality of cells 5a to 5d connected in series with each other are housed in a battery pack 1, and electrodes at both ends of the cells connected in series are provided on the surface of the battery pack 1. In the battery device connected to the paired power supply terminals 3 and 4, intermediate terminals 6a to 6c are provided on the surface of the battery pack 1, and the connecting portions of the plurality of cells 5a to 5d are connected to each other. It is connected to ~ 6c.

[0005]

[Action]

 Since the intermediate terminals 6a to 6c are provided on the surface of the battery pack, it is possible to easily detect the charge state of each of the cells 5a to 5d, which corresponds to the state of each of the cells 5a to 5d. Can be charged.

[0006]

【Example】

 An example of the battery device according to the present invention will be described with reference to the drawings. A pair of power supply terminals 3 and 4 is provided on the surface (upper surface) 2 of the battery pack 1 having a cubic shape in FIG. 1 near one edge thereof. As shown in FIG. 2, the battery pack 1 accommodates a plurality of (four in this example) rechargeable cells 5 a to 5 d connected in series to each other, and the + pole of the cell 5 a is the power supply terminal 3 The negative terminal of the cell 5d is connected to the power supply terminal 4. Electric current is supplied to electronic devices (not shown) from the power supply terminals 3 and 4 of this pair.

Further, the upper surface 2 of the battery pack 1 is provided with three intermediate terminals 6a to 6c located between the pair of power supply terminals 3 and 4, and the connecting portion between the cells 5a and 5b is at the intermediate end. It is connected to the child 6a, the connection between the cells 5b and 5c is connected to the intermediate terminal 6b, and the connection between the cells 5c and 5d is connected to the intermediate terminal 6c. Therefore, the cells 5a to 5d can be commonly charged through the pair of power supply terminals 3 and 4, and the cells 5a to 5d can be individually charged through the power supply terminals 3 and 4 and the intermediate terminals 6a to 6c. Can be charged. In the above description, four cells are stored in the battery pack 1, but the number is not limited. Further, in this example, the intermediate terminals 6a to 6c are provided between the power supply terminals 3 and 4, but their installation positions are not limited.

[0008]

[Effect of the device]

 According to the battery device of the present invention, since the intermediate terminal connected to the connecting portion of each cell is provided on the surface of the battery pack, it is possible to properly charge each cell through the power supply terminal and each of these intermediate terminals. There is an effect that can be. Therefore, there is an effect that the life of the entire battery device can be expected.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a battery device according to the present invention.

FIG. 2 is a connection diagram of cells in a battery pack.

Claims (1)

[Scope of utility model registration request] 1. A battery in which a plurality of cells connected in series to each other are housed in a battery pack, and both end electrodes of the cells connected in series are connected to a pair of power supply terminals provided on the surface of the battery pack. In the device, a battery device in which connecting portions of the plurality of cells that are connected to each other are connected to respective intermediate terminals provided on a surface of the battery pack.