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Battery protection integrated circuits, battery protection devices, and battery packs

An integrated circuit and battery technology, applied in emergency protection circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, circuit devices, etc., can solve the problem of easy decrease in solder wettability and decrease in thermal conductivity of wiring patterns and other problems, to achieve the effect of inhibiting the decline in wettability

Active Publication Date: 2019-04-23
MITSUMI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the conventional art described above, the wiring pattern connected to the central external connection terminal among the plurality of external connection terminals arranged in the long direction is located close to the bottom of the IC, so the heat conduction of the wiring pattern sex decline
Therefore, the wettability of the soldering of the external connection terminal and the wiring pattern in the central portion tends to decrease.

Method used

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  • Battery protection integrated circuits, battery protection devices, and battery packs
  • Battery protection integrated circuits, battery protection devices, and battery packs
  • Battery protection integrated circuits, battery protection devices, and battery packs

Examples

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Embodiment Construction

[0030] Embodiments of the present invention will be described below with reference to the drawings.

[0031] figure 1 It is an external view showing an example of a lithium ion secondary battery pack. Such as figure 1 As shown, the lithium ion secondary battery pack 100 includes a lithium ion secondary battery 103 formed in a flat rectangular parallelepiped shape and a wiring board 101 on which a battery protection integrated circuit 104 is mounted. Lithium-ion secondary battery 103 has, for example, a width W of 25 mm to 40 mm and a thickness T of 2 mm to 6 mm. The wiring board 101 is formed into an elongated shape corresponding to the side shape of the battery, and a positive terminal (B+) and a negative terminal (B-) are formed at both ends of the mounting surface on which the battery protection integrated circuit 104 is mounted, and these terminals are respectively connected to lithium ion batteries. The positive terminal (B+) and the negative terminal (B−) of the secon...

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Abstract

The present invention provides a battery protection integrated circuit, a battery protection device, and a battery pack, which prevent the wettability of soldering of external connection terminals from decreasing. The battery protection integrated circuit is mounted on the wiring board, and the wiring board is mounted on the side surface of the battery having a flat rectangular parallelepiped shape. The wiring board has at least a first terminal and a second terminal, and is formed to correspond to the shape of the side surface of the battery. An elongated shape, wherein the first terminal is connected to one terminal of a battery; the second terminal is connected to a terminal of a charger or an electronic device, and the battery protection integrated circuit has a plurality of external connection terminals arranged on the terminal arrangement surface of the package, When mounted on a wiring board, all external connection terminals that can be connected to the first terminals are arranged on the first short side of the terminal arrangement surface facing one of the short sides of the wiring board, All external connection terminals connectable to the second terminals are arranged on the second short side of the terminal arrangement surface.

Description

technical field [0001] The invention relates to a battery protection integrated circuit, a battery protection device and a battery pack. Background technique [0002] Conventionally, there is known a battery protection IC mounted on a wiring board mounted on a side surface of a battery having a flat rectangular parallelepiped outer shape (for example, refer to Patent Document 1). This battery protection IC has a plurality of external connection terminals arranged along the longitudinal direction of the rectangular wiring board when mounted on the rectangular wiring board. [0003] However, in the conventional art described above, the wiring pattern connected to the central external connection terminal among the plurality of external connection terminals arranged in the long direction is located close to the bottom of the IC, so the heat conduction of the wiring pattern sex decline. Therefore, the wettability of the soldering of the external connection terminal and the wiri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/48H02H7/18H01M50/574
CPCH01M10/4264H01M10/48H02H7/18H01M50/574H01M10/425H02H9/025H02J7/0031H01M10/0525H01M2200/00Y02E60/10H05K1/02
Inventor 田中伸史川口德仁
Owner MITSUMI ELECTRIC CO LTD
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