JP2003272585A - Lead plate fitting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide lead plate fitting structure eliminating a fear of short circuit between a positive electrode and a negative electrode by forming and placing an electrically insulating material in a suitable dimension or shape between the lead plate and the side part of a secondary battery. <P>SOLUTION: This lead plate fitting structure is that the nickel lead plate is bent and fit to the negative electrode by spot welding, and the insulating material having suitable thickness is interposed between the side part of the secondary battery and the lead plate. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved lead plate mounting structure for preventing a lead plate from short-circuiting to a positive electrode of a secondary battery when the lead plate is spot-welded to a negative electrode of the secondary battery.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 1, a secondary battery 1, for example, a lithium ion battery has been adopted in most mobile phones due to its characteristics. The battery pack containing the battery 1 is necessarily miniaturized. When a battery is built in a miniaturized battery pack, a nickel (PCB) 2 that has a circuit for protecting the battery in a limited space and these and the negative electrode 3 of the secondary battery 1 are electrically connected The device for arranging the metal lead plate 4 and the secondary battery 1 has been designed.

A lead plate 4 is attached to the negative electrode 3 of the secondary battery 1.
The structure of FIG. 1 in which the lead plate 4 is connected to the side of the secondary battery 1 to connect the electric path of the PCB 2 and the negative electrode 3 is arranged in a narrow space. Since the width of the lead plate 4 is limited, there is a risk of contacting the positive electrode 5 of the secondary battery 1 and causing a short circuit. In particular, it is conceivable that the peripheral edge of the lead plate 4 and the peripheral edge of the secondary battery 1 come close to each other for some reason and short-circuit.

[0004]

Therefore, an object of the present invention is to form an insulating material having an electrically insulating property between the lead plate and the side portion of the secondary battery by selecting an appropriate size or shape,
It is intended to provide a lead plate mounting structure in which there is no risk of a short circuit between the negative electrode and the positive electrode by interposing this.

[0005]

Means for Solving the Problems The means for solving the problems of the present invention is a lead plate mounting structure in which a lead plate made of nickel metal is bent and spot-welded to the negative electrode of the secondary battery for mounting. The lead plate mounting structure is characterized in that an insulating material having a proper thickness is inserted and interposed between a side portion of the lead plate and the lead plate.

[0006]

[Function] By placing an insulating tape or plate between the lead plate and the side of the secondary battery, a distance between the negative electrode and the positive electrode is provided, and the risk of short circuit is avoided by selecting the insulating property. You can do it.

[0007]

DETAILED DESCRIPTION OF THE INVENTION An embodiment of the present invention will be described below with reference to the accompanying drawings and FIG. Reference numeral 11 in FIG. 2 is a secondary battery of a lithium-ion battery. A nickel metal lead plate 13 is attached to the negative electrode 12 of the battery by spot welding or the like with a width substantially the same as the thickness of the battery 11. The lead plate 13 is bent so as to be attached to the periphery of the secondary battery 11 on the way and is electrically connected to an electric path of a PCB (printed circuit board) not shown. Insulation tape 15 from spot welding point 14 of lead plate 13 to bending point
Is rolled. The insulating tape 15 has adhesive properties, and therefore
It does not move on the lead plate 13. By disposing the insulating tape 15 in between, the negative electrode 12 of the battery 11 and the battery 1
This eliminates the risk of short circuit with the positive electrode 16 of No. 1.

FIG. 3 shows another example of the lead plate 1.
An insulating plate 17 is interposed between the battery 3 and the side portion of the battery 11. The insulating plate 17 is provided on the side portion of the battery 11 with an adhesive material. The insulating plate 17 has a width substantially the same as the thickness of the battery 11 and is selected to have an appropriate thickness. Therefore, there is no fear of short circuit between the positive electrode 16 and the negative electrode 12 of the battery 1. Any insulating plate and insulating tape can be appropriately selected as long as they are well insulated and have adhesiveness.

[0009]

As described above, the present invention can provide a lead plate mounting structure which is effective in eliminating the risk of a short circuit between the positive electrode and the negative electrode of the battery due to some cause.

[Brief description of drawings]

FIG. 1 is a perspective view of a conventional example.

FIG. 2 is a perspective view of an embodiment of the present invention.

FIG. 3 is a perspective view showing another example of the present invention.

[Explanation of symbols]

11 Secondary battery 12 Negative electrode 13 Lead plate 14 Spot welding points 15 insulating tape 16 Positive electrode 17 Insulation plate

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[Procedure amendment]

[Submission date] October 4, 2002 (2002.10.
4)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction content]

[0004]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to form an electrical element formed by selecting an appropriate size and shape between both a strip-shaped lead plate and a side portion of a secondary battery where an electrode is exposed. The present invention provides a lead plate mounting structure in which an insulating material having a static insulating property is arranged so that there is no risk of a short circuit between the negative electrode and the positive electrode due to some external force, vibration, or the like.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction content]

[0006]

The tape or plate having an appropriate insulating thickness and a strong impact resistance is arranged between the lead plate and the side portion of the secondary battery so that a distance between the negative electrode and the positive electrode can be provided and any external force can be applied. Moreover, the fear of short circuit due to external force or assembly error can be avoided by selecting the electric insulation property.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction content]

FIG. 3 shows another example of the lead plate 1.
An insulating plate 17 is interposed between the battery 3 and the side portion of the battery 11. The insulating plate 17 is provided on the side portion of the battery 11 with an adhesive material. The insulating plate 17 has a width substantially the same as the thickness of the battery 11, is selected to have an appropriate thickness, and has a strength that does not easily break even if an external force is applied. Therefore, the positive electrode 1 of the battery 1
There is no fear that the 6 and the negative electrode 12 are short-circuited by some external force or an assembly error. Any insulating plate and insulating tape can be appropriately selected as long as they are well insulated and have adhesiveness. As a matter of course, the insulating tape in this case should be selected so as to withstand the pressing force.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction content]

[0009]

As described above, according to the present invention, in a lead plate mounting structure in which a lead plate made of nickel metal is bent and spot-welded to the negative electrode of the secondary battery to be mounted, the lead plate is mounted between the side portion of the secondary battery and the lead plate. Since the insulating material is inserted and inserted with an appropriate thickness, there is no fear of short circuit between the positive electrode and the negative electrode of the battery due to some external force or assembly error, and a lead plate mounting structure can be provided which is effective. .

Claims (4)

[Claims] 1. A lead plate mounting structure in which a nickel metal lead plate is bent and spot-welded to a negative electrode of a secondary battery for mounting, and an insulating material is provided between the side part of the secondary battery and the lead plate with an appropriate thickness. A lead plate mounting structure characterized by being inserted and interposed. 2. The lead plate mounting structure according to claim 1, wherein the insulating material comprises an adhesive tape wound around the lead plate. 3. A lead plate mounting structure, wherein the width of the insulating material is a strip shape set to be substantially equal to the width of the secondary battery. 4. The lead plate mounting structure according to claim 1, wherein the insulating material is arranged at a position where the lead plate is attached to a side portion of the secondary battery.