KR200296075Y1 - Battery cell packaging structure - Google Patents

Abstract

The present invention relates to a battery cell package structure and method for properly mounting a battery cell for applying power to a mobile communication terminal without applying a spot welding process to the battery case.

According to a preferred embodiment of the present invention, a battery cell having a first power terminal ('+' terminal) and a second power terminal ('-' terminal), and a first power terminal in which the first power terminal is in electrical contact A PCB module having a second power terminal connecting pad for electrical connection between a contact pad and the second power terminal, a battery case having a PCB mounting recess for mounting the PCB module on opposite inner walls thereof, and the battery cell And a conductive pattern member having an elastic support portion for elastically supporting the battery cell while electrically connecting between the second electrode of the PCB and the second power terminal connecting pad of the PCB module. Welded to the second power terminal connecting pad of the PCB module, and the other end thereof is formed so that the second power terminal of the battery cell is in electrical contact with the elastic support while the elastic support is formed. The.

Description

BATTERY CELL PACKAGING STRUCTURE}

The present invention relates to a package structure of a battery cell, and more particularly, to a battery cell package structure for properly packaging a battery cell (Battery Cell) applied to a mobile communication terminal in a battery case.

Recently, a battery pack for supplying power is detachably provided to a CDMA / GSM and / or PCS portable communication terminal that is spread for personal mobile communication service. A battery cell of a predetermined type is formed in a battery case constituting the battery pack. The built-in power charged in the battery cell is applied to the mobile communication terminal, the standby / communication of the mobile communication terminal is made.

1 is a schematic diagram illustrating a package structure of a battery cell according to a conventional example.

In the drawing, a battery cell 20 capable of recharging repeatedly is stably embedded in a battery case 10 formed by molding a synthetic resin, and the battery cell 20 has a first power supply terminal (') on one surface thereof. + 'Terminal 22 is formed and a second power supply terminal ('-'terminal) 24 is formed on the other surface.

In addition, a battery cell protection circuit (for example, overcharge / overcurrent / overvoltage / overdischarge protection circuit) designed to allow the battery cell 10 to be charged at a stable level in the battery case 10 is designed. Module 30 is also installed.

Typically, when the first battery terminal 22 and the second power terminal 24 of the battery cell 20 are electrically connected to the PCB module 30, the charging of the battery cell 20 is performed. Protection against overcharging is achieved by the PCB module 30.

Therefore, the PCB module 30 is fixedly coupled to one side of the battery cell 20 so that the PCB module 30 is held in a position closest to the battery cell 20, and in that state, the first of the battery cell 20 The power supply terminal 22 and the second power supply terminal 24 are connected to the first and second power supply terminals formed on the PCB module 30 by corresponding conductive pattern members (for example, nickel thin plates 26a and 26b of predetermined widths). It is connected to the pad correspondingly.

Here, since the outer surface of the battery cell 20 is formed of a conductive metal associated with the second power supply terminal 24, the battery cell 20 is fixedly coupled to the PCB module 30 on one side of the battery cell 20. In this case, an insulating sheet is adhered between the bottom surface of the PCB module 30 and the battery cell 20 so that the bottom surface of the battery cell 20 and the PCB module 30 do not electrically contact each other.

In addition, the insulating paper has the conductive pattern members 26a and 26b extending between the first power supply terminal 22 and the second power supply terminal 24 and the PCB module 30 of the battery cell 20. And is interposed between the battery cell 20.

However, in the package structure of the battery cell shown in FIG. 1, the conductive pattern members 26a and 26b are welded to the first power terminal 22 and the second power terminal 24 of the battery cell 20 (eg, And electrical contact by spot welding), and the conductive pattern members 26a and 26b are affected by an effect applied when the conductive pattern members 26a and 26b are welded to the first power supply terminal 22 and the second power supply terminal 24. The deterioration of the characteristics of the battery cell 20 is caused when the normal charging / discharging function is not satisfied.

In addition, in the package structure of the battery cell, the conductive pattern members (nickel thin plates) 26a and 26b are welded to the first power supply terminal 22 and the second power supply terminal 24 of the battery cell 20. And a process for welding the conductive pattern members 26a and 26b to corresponding first and second power terminal connection pads of the PCB module 30, and the conductive pattern on the outer surface of the battery cell 20. A process of bonding the insulating paper to insulate the members 26a and 26b from the PCB module 30 is required, which in turn leads to not only complicated packaging of the battery cell but also a decrease in productivity, and thus the battery The price of the pack will increase.

Accordingly, the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a package structure of a battery cell in which a battery cell packaging operation is easily executed in a battery case without causing deterioration of characteristics of the battery cell. .

In order to achieve the above object, according to a preferred embodiment of the present invention, a battery cell having a first power terminal ('+' terminal) and a second power terminal ('-' terminal), and the first power terminal is electrically A PCB module having a first power terminal contact pad contacted by a second power terminal and a second power terminal connection pad for electrical connection between the second power terminal, and a PCB mounting recess for mounting the PCB module on both inner walls thereof A battery cell comprising a battery case and a conductive pattern member having an elastic support portion for elastically supporting the battery cell while electrically connecting between the second electrode of the battery cell and the second power terminal connecting pad of the PCB module. Package structure is provided.

Advantageously, the conductive pattern member has one end welded to the second power supply terminal connection pad of the PCB module and the other end of the conductive support member so that the second power supply terminal of the battery cell is in electrical contact with the elastic support. Is formed.

In the battery cell package structure according to the present invention, the first power terminal of the battery cell contacts the first power terminal of the PCB module in a state in which the battery cell is elastically pressed by the elastic support of the conductive pattern member. It is electrically connected in a form of contact with the pattern, thereby not deteriorating characteristics caused during welding of the first power terminal of the battery cell and the PCB module.

1 is a view illustrating a package structure of a battery cell according to a conventional example;

2 is a schematic diagram illustrating a package structure of a battery cell according to a preferred embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

10: battery case, 20: battery cell,

30: PCB module, 200: battery cell,

202: first power terminal, 204: second power terminal,

210: PCB module, 212: first power terminal contact pattern,

224: PCB module mounting recess, 230: conductive pattern member.

Hereinafter, with reference to the accompanying drawings of the present invention will be described in detail.

2 is a schematic view showing a package structure of a battery cell according to a preferred embodiment of the present invention.

Referring to the package structure of the battery cell shown in FIG. 2, a first power terminal ('+' terminal) 202 is formed in a protruding state on one surface of the battery cell 200, and at the other end of the first power source. A second power supply terminal ('-' terminal) 204 corresponding to the terminal 202 is formed.

In addition, a PCB module 210 having an overcharge / overcurrent / overvoltage / overdischarge protection circuit mounted thereon is disposed in front of the first power terminal 202 of the battery cell 200. On the surface of the battery cell 200 corresponding to the first power terminal 202, a first power terminal contact pattern 212 electrically contacting the first power terminal 202 is patterned.

In the battery case 220 in which the battery cell 200 and the PCB module 210 are accommodated, a guide piece 222 having an upper end bent in a horizontal direction is formed at a predetermined position inside the bottom surface thereof, and the battery case 220. Both sides of the predetermined position of the PCB module mounting recess 224, which is installed at both ends of the PCB module 210 is formed opposite.

In addition, a conductive pattern constituting an elastic support portion for electrically connecting the second power terminal 204 of the battery cell 200 to the second power terminal connection pad (not shown) of the PCB module 210. The member 230 is bent such that one end 232 is advantageous for the connection with the second power terminal connecting pad of the PCB module 210, and the other end 234 is the second power terminal of the battery cell 200. 204 has a curved shape to elastically support the battery cell 200 while being in electrical contact, and a guide piece formed at the bottom of the bottom of the battery case 220 at the end 234a of the other end 234. It is established at 222.

Here, the conductive pattern member 230 is preferably formed of a conductive metal panel having conductivity.

Therefore, in the package structure of the battery cell according to the second embodiment of the present invention, one end 232 of the conductive pattern member 230 is welded to the second power terminal connection pad of the PCB module 210 and the PCB module ( Both ends of the 210 and the end 234a of the other end 234 of the conductive pattern member 230 are installed to be received in the PCB module mounting recess 224 and the guide piece 222 of the battery case 220. .

Then, the second power terminal 204 formed on the bottom surface of the battery cell 200 is brought into contact with the other end 234 of the conductive pattern member 230 and the first power terminal of the battery cell 200. The battery cell 200 is mounted on the battery case 220 such that 202 is in contact with the first power terminal contact pattern 212 of the PCB module 210.

In this case, the battery cell 200 is elastically supported by the other end 234 of the conductive pattern member 230, so that the first power terminal 202 is the first power terminal contact pattern of the PCB module 210. The battery is maintained in close contact with the 212, thereby eliminating the welding process for electrically connecting the first power terminal 202 and the second power terminal 204 to the PCB module 210. Cell packaging is simplified.

On the other hand, the present invention is not limited to the above-described application example, it is a matter of course that various changes and modifications can be made within the scope not departing from the technical gist and point of the invention. That is, although the shape of the battery case 220 is determined according to the shape of the battery cell 200, the first power terminal and the second power terminal of the battery cell 200 are appropriately conductive in a state in which welding is excluded. If the structure is to be electrically connected to the PCB module via a pattern member, the shape of the PCB module and the shape of the conductive pattern member can be appropriately modified according to the shape of the battery cell.

As described above, according to the package structure of the battery cell according to the present invention, as the first power terminal and / or the second power terminal of the battery cell is in electrical contact with the PCB module without welding process, the battery that can be caused in the welding process Disadvantages such as deterioration of the characteristics of the cell are eliminated.

In addition, when the first power terminal of the battery cell contacts the first power terminal contact pattern of the PCB module, the first power terminal and the first power terminal of the PCB module are elastically supported by the conductive pattern member. The electrical adhesion of the contact pattern can be better maintained.

Furthermore, the battery cell, the PCB module, and the conductive pattern member (or conductive pattern member) are detachably assembled to the battery case, so that the assembling workability is good and productivity is expected to be improved. The exchange operation becomes easier.

Claims (2)

A battery cell having a first power terminal ('+' terminal) and a second power terminal ('-' terminal); A PCB module having a first power terminal contact pad to which the first power terminal is in electrical contact and a second power terminal connection pad for electrical connection of the second power terminal; A battery case having a PCB mounting recess for mounting the PCB module on both inner walls thereof; And a conductive pattern member having an elastic support portion for elastically supporting the battery cell while electrically connecting between the second electrode of the battery cell and the second power terminal connecting pad of the PCB module. Package structure. The second power terminal of the battery cell of claim 1, wherein one end of the conductive pattern member is welded to the second power terminal connecting pad of the PCB module and the other end is formed of the elastic support. Package structure of a battery cell, characterized in that formed in contact with.