KR100913695B1 - Battery pack - Google Patents

Abstract

The present invention relates to a battery pack, and more particularly, to improve the overall assembly strength, to prevent the defect due to contamination of the battery cell during assembly, and to a battery pack to facilitate the replacement of defective parts.

The battery pack according to the present invention is provided with a negative terminal at the top, a positive terminal is provided at the bottom, the battery cell for supplying a charged power; A protection circuit module disposed on one side of the battery cell to prevent overcharge or overdischarge; A negative electrode terminal plate having a “a” shape and connecting the protective circuit module and the negative electrode terminal to each other; A positive electrode terminal plate having a "a" shape and connecting the boro circuit module and the positive electrode terminal to each other; A holder provided between one side of the battery cell and the protection circuit module to seat the protection circuit module; An adhesive tape is coated on both sides to bond one side of the battery cell and the holder to each other; An upper case provided to receive an upper portion of a battery cell to which the negative terminal plate is connected; A lower case provided to receive a lower portion of the battery cell to which the positive electrode terminal plate is connected; And a cover case provided to receive the protection circuit module and coupled to the side of the battery cell. It includes a double-sided tape for coupling the upper case and the lower case to the battery cell, the fastening groove is formed on both sides of the cover case, the fastening protrusion is formed on the upper case and the lower case is configured to be mutually coupled. .

Battery, Cell, Battery Pack, Label, Assembly, Combine

Description

Battery pack {BATTERY PACK}

The present invention relates to a battery pack, and more particularly, to improve the overall assembly strength, to prevent the defect due to contamination of the battery cell during assembly, and to a battery pack to facilitate the replacement of defective parts.

In general, an inner battery pack used as a power source of a portable communication terminal is composed of a combination of a battery cell and a protection circuit module (PCM).

Here, the battery cell has a form in which an electrode stacking unit comprising a cathode sheet and an anode sheet is accommodated in a metal casing, and an anode terminal and a cathode terminal are provided on an outer surface of the casing.

In addition, the protection circuit module is installed outside the battery cell to prevent the risk of explosion and overcharge of the battery.

In other words, the battery pack has a structure in which a battery cell and a protection circuit module are coupled to each other and packaged in a unit form, and such a battery pack has become smaller, thinner, and lighter according to the trend of miniaturization and light weight of a portable communication terminal using the same. It is required.

In accordance with such a demand, a conventional battery pack includes a battery cell, a protection circuit module mounted on the side of the battery cell, and an electrode terminal for electrically connecting the battery cell and the protection circuit module.

Here, the protective circuit module and the electrode terminal is fixed integrally with the battery cell by a mold molding portion.

However, the conventional battery pack is a method of fixing the protection circuit module and the electrode terminal to the battery cell through the mold molding part by injection of the resin material, there is a considerable difficulty in manufacturing the battery pack.

In addition, the manufacturing method as described above has a problem in that the strength of the mold molding part is weakened when cracks or pinholes are generated in the mold molding part when a flow defect of the molten resin occurs during the molding of the mold molding part.

Due to this problem, there is a disadvantage that the protection for the protection circuit module is not properly made while the mold molded part is easily damaged from an external impact.

In addition, the conventional battery pack has a structure in which the protection circuit module and the electrode terminal are integrated into the mold molding part, and even if a defect occurs in any one of the protection circuit module and the electrode terminal, the entire integrated mold molding part needs to be replaced. There is an increasing problem.

In addition, in the case of the conventional battery pack, the negative electrode terminal and the positive electrode terminal is disposed on the top and bottom of the battery cell consisting of a rectangular front portion, the negative terminal plate, the positive terminal plate, the holder and the protective circuit module additionally coupled to the negative terminal and the positive terminal By doing so, the length of the battery will be longer.

Therefore, due to the structure of the battery pack as described above, a portable terminal such as a mobile phone in which the battery pack is accommodated has a problem in that a mobile phone having various shapes is limited due to a battery pack limited to a rectangle when designing a design.

The present invention has been proposed to solve the above problems, an object of the present invention is to improve the overall assembly strength of the battery pack to be able to safely protect the battery pack from external impact.

In addition, another object of the present invention is to facilitate the assembly and disassembly of the battery pack to shorten the assembly time of the battery pack.

Another object of the present invention is to assemble a protection circuit module, a holder, a negative electrode terminal plate, a positive electrode terminal plate, and then, if a defect or defect occurs in the process of coupling it to the battery cell, only the components having the defect or defect easily By replacing them, the manufacturing cost of the battery pack is reduced.

In addition, another object of the present invention is to prevent the damage to the battery cell due to contamination of the negative electrode terminal and the positive electrode terminal generated during the bonding by soldering or spot welding by placing the protective circuit module, the negative terminal and the positive terminal on different sides. will be.

In addition, another object of the present invention is to be able to manufacture a battery pack in a form close to the square on the front.

The battery pack according to the present invention for achieving the above object is provided with a negative terminal on the top, a positive terminal on the bottom, the battery cell for supplying a charged power; A protection circuit module disposed on one side of the battery cell to prevent overcharge or overdischarge; A negative electrode terminal plate having a “a” shape and connecting the protective circuit module and the negative electrode terminal to each other; A positive electrode terminal plate having a "a" shape and connecting the boro circuit module and the positive electrode terminal to each other; A holder provided between one side of the battery cell and the protection circuit module to seat the protection circuit module; An adhesive tape is coated on both sides to bond one side of the battery cell and the holder to each other; An upper case provided to receive an upper portion of a battery cell to which the negative terminal plate is connected; A lower case provided to receive a lower portion of the battery cell to which the positive electrode terminal plate is connected; And a cover case provided to receive the protection circuit module and coupled to the side of the battery cell. It includes a double-sided tape for coupling the upper case and the lower case to the battery cell, the fastening groove is formed on both sides of the cover case, the fastening protrusion is formed on the upper case and the lower case is configured to be mutually coupled. .

The fastening protrusion may include a trapezoidal protrusion and a connection part connecting the protrusion to an upper case or a lower case, and the fastening groove may have a shape corresponding to the fastening protrusion.

Meanwhile, a spacer tape may be additionally formed on the other side of the battery cell by simultaneously wrapping the front part, the other part, and the rear part of the battery cell while the upper case and the lower case are coupled to the battery cell. Can be.

Meanwhile, the holder and the cover case may further include fitting grooves and fitting protrusions respectively corresponding to each other to enable the fitting coupling.

In addition, the holder and the protection circuit module further includes a fixing groove and a fixing protrusion corresponding to each other so as to be mutually fixed.

On the other hand, the negative electrode terminal plate and the positive electrode terminal plate, the protective circuit module and the negative electrode terminal and the positive electrode terminal are coupled to each other by soldering.

In addition, the negative electrode terminal plate and the positive electrode terminal plate may be coupled to each other by spot welding with the protective circuit module, the negative electrode terminal, and the positive electrode terminal, respectively.

According to the present invention by the above configuration,

Implementing a snap between the cover case, the upper case and the lower case of the present invention by a snap fastening can improve the overall assembly strength of the battery pack can exert the effect of protecting the battery pack safely from external impact.

In addition, the assembly and disassembly of the battery pack can be easily performed, thereby reducing the assembly time of the battery pack.

In the battery pack of the present invention, after assembling a protection circuit module, a holder, a negative electrode terminal plate, and a positive electrode terminal plate, the battery pack is combined with the battery cell to complete the battery pack. Therefore, when defects or defects occur during assembly, only the components are easily provided. It can be replaced, resulting in cost savings.

In addition, the battery pack according to the present invention by placing the protective circuit module and the negative terminal and the positive terminal on different sides, the negative electrode terminal and the positive electrode terminal was contaminated when combined by soldering or spot welding between the protective circuit module and the negative electrode terminal plate and the positive electrode terminal plate. In contrast to the conventional battery pack, it is possible to protect the negative terminal and the positive terminal of the battery cell from contamination, thereby exhibiting an effect that can significantly reduce the defective rate of the battery cell.

In addition, the present invention can exhibit the effect that the battery pack can be manufactured in a form close to the square on the plane by arranging the protective circuit module, the negative terminal and the positive terminal on different sides.

In addition, when the label is wrapped in the battery cell, the label may be prevented from being distorted due to the difference in height between the upper case and the lower case and the battery cell, thereby enhancing the beauty of the product and enhancing the completeness of the product.

Accordingly, the battery pack manufactured by the square enables various designs of the design of the mobile phone in which the battery pack is accommodated, whereby the battery pack of the present invention can be employed in a mobile phone having various designs.

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

Prior to this, terms used in the present specification and claims should not be construed in a dictionary sense, and the inventors may properly define the concept of terms in order to explain their invention in the best way. It should be construed as meaning and concept consistent with the technical spirit of the present invention.

Therefore, the configuration shown in the embodiments and drawings described herein are only preferred embodiments of the present invention, and do not represent all of the technical spirit of the present invention, various equivalents that may be substituted for them at the time of the present application It is to be understood that variations may exist.

1 is an exploded perspective view of a battery pack according to the present invention, Figure 2 is a perspective view of a battery pack according to the present invention, Figure 3 is a cross-sectional view of a battery pack according to the present invention.

As shown in Figures 1 to 3, the battery pack 100 according to the present invention, the upper terminal is provided with a negative electrode terminal 12, the lower terminal is provided with a positive terminal 14, to supply a charged power Battery cell 10; A protection circuit module 20 disposed at one side of the battery cell 10 to prevent overcharge or overdischarge; A negative electrode terminal plate 40 having a “a” shape and connecting the protective circuit module 20 and the negative electrode terminal 12 to each other; A positive electrode terminal plate 50 having a “a” shape and connecting the boro circuit module 20 and the positive electrode terminal 14 to each other; A holder 30 provided between one side of the battery cell 10 and the protection circuit module 20 on which the protection circuit module 20 is seated; An adhesive tape is coated on both sides of the insulating tape 90 to couple one side of the battery cell 10 and the holder 30 to each other; An upper case 70 provided to receive an upper portion of the battery cell 10 to which the negative terminal plate 40 is connected; A lower case 80 provided to receive a lower portion of the battery cell 10 to which the positive electrode terminal plate 50 is connected; And a cover case 60 provided to accommodate the protection circuit module 20 and coupled to the side of the battery cell 10. A double-sided tape 92 for coupling the upper case 70 and the lower case 80 to the battery cell 10, and fastening grooves 69 are formed at both sides of the cover case 60. Fastening protrusions 72 and 82 are formed on the upper case 70 and the lower case 80 so that they can be coupled to each other.

Hereinafter, each configuration will be described in detail.

As shown in FIG. 1, the battery pack 100 according to the present invention basically includes a battery cell 10, a protection circuit module 20, a negative terminal plate 40, a positive terminal plate 50, a holder 30, The insulating tape 90, the upper case 70, the lower case 80, the cover case 60, the spacer tape 94, the label 96, and the like are included.

1 to 3, the battery cell 10 of the present invention is provided with a negative terminal 12 on the upper side, the positive terminal 14 is provided on the lower side, the battery cell 10 and the negative electrode sheet The electrode stacking unit composed of the anode sheet may be provided in a form accommodated in the metal casing.

The battery cell 10 may be provided in various kinds.

That is, it may be provided as a nickel-cadmium battery, a nickel-hydrogen battery or a lithium ion battery.

Preferably, the battery cell 10 is capable of charging a large voltage compared to the size compared to other batteries, and the power supply is sustainable for a long time after charging, consisting of a single battery as a convenient lithium ion Can be prepared.

The battery cell 10 is provided such that the negative electrode terminal 12 provided on the upper portion of the battery cell 10 and the negative electrode terminal plate 40 connected to the protection circuit module 20 to be described later are coupled to each other.

In addition, the positive electrode terminal 14 provided below the battery cell 10 and the positive electrode terminal plate 50 connected to the protection circuit module 20 are provided to be coupled.

Accordingly, the battery is electrically connected to the protection circuit module (PCM) 20 through the negative electrode plate 40 connected to the negative electrode terminal 12 and the positive electrode plate 50 connected to the positive electrode terminal 14. To supply the supplied power.

Here, one side of the negative electrode terminal plate 40 and the positive electrode terminal plate 50 is connected to the protection circuit module 20, and the other side is connected to the positive electrode terminal 14 and the negative electrode terminal 12 of the battery cell 10, respectively. .

The negative electrode terminal plate 40 may be provided in various shapes. As shown in FIG. 1, the protective circuit module 20 and the negative electrode terminal may be formed by applying bending to a flat metal plate to have a substantially “a” shape. (12) can be provided to be accessible to all.

In addition, the positive electrode terminal plate 50 may also be provided in the same shape as the negative electrode terminal plate 40, as shown in Figure 1, by applying a bending to the flat metal plate to form a substantially "a" shaped to the protection It may be provided to be connected to both the circuit module 20 and the positive terminal 14.

On the other hand, the negative electrode terminal plate 40 and the positive electrode terminal plate 50 may be coupled to both sides of the protective circuit module 20 by soldering or spot welding, preferably by spot welding.

Here, the spot welding refers to a welding method in which a metal plate is stacked and the electrodes are connected to each other by passing electrodes on top and bottom, and have an advantage that automation is possible compared to a soldering method.

In addition, the negative electrode terminal plate 40 and the positive electrode terminal plate 50 may be made of various materials, preferably provided with a nickel plate.

The negative electrode terminal 12 and the positive electrode terminal 14, which are connected to the negative electrode terminal plate 40 and the positive electrode terminal plate 50, provided on the upper and lower portions of the battery cell 10, are located at one side of the battery cell, which will be described later. The protection circuit module 20 is electrically connected to each other.

As described above, the protection circuit module 20 positioned at one side of the battery cell 10 is provided to prevent overcharging or overdischarging of the battery cell 10, and prevents explosion of the battery cell 10. In order to prevent inflow of overcurrent, or to short-circuit between the negative electrode terminal 12 and the positive electrode terminal 14 provided in the battery cell 10.

That is, the protection circuit module 20 is connected to the battery cell 10 during operation to ensure safety from the risk of explosion, such as the battery cell 10, and operates, the service life of the battery cell 10 It serves to extend.

In addition, the protective circuit module 20, the negative electrode terminal plate 40 and the positive electrode terminal plate 50 may be coupled to each other in a variety of ways, such as soldering or spot welding, preferably by spot welding.

Here, the holder 30 may be provided between the protection circuit module 20 and one side of the battery cell.

The holder 30 is coupled to the protective circuit module 20 in the front portion, and the rear portion is coupled to one side of the battery cell 10, by mounting the protective circuit module 20 of the protective circuit module 20 It serves to prevent flow.

In addition, the holder 30 serves to prevent flow by fixing and supporting the negative electrode terminal plate 40 and the positive electrode terminal plate 50 coupled to the protection circuit module 20 in the protection circuit module 20, and the protection. It also serves to guide the circuit module 20 to be coupled to one side of the battery cell 10.

The holder 30 is provided to be coupled to one side of the battery cell 10 using an insulating tape 90 coated with adhesive on both sides, and may be coupled in various ways.

Here, the holder 30 can be combined with the protective circuit module 20 in various ways.

For example, it may be bonded by an adhesive or double-sided tape.

In addition, as shown in FIG. 1, the holder 30 and the protection circuit module 20 may be fixed to each other by additionally providing a fixing groove 22 and a fixing protrusion 32 corresponding to each other.

The holder 30 includes a seating part 34 on which the negative electrode terminal plate 40 and the positive electrode terminal plate 50 may be mounted on one side and the other side of the front surface.

That is, when one side of the negative electrode terminal plate 40 and the positive electrode terminal plate 50 is coupled to one side and the other side of the protective circuit module 20 rear surface, the seating part 34 of the holder 30 is the protective circuit module 20. When combined with, it is to support one side of the back of each of the negative electrode terminal plate 40 and the positive electrode terminal plate 50.

In this case, the element such as a resistor or a capacitor used in the electronic circuit mounted on the protective circuit module 20 is protruded with a certain height, so that the protective circuit module 20 when the protective circuit module 20 is coupled with the holder 30 or One or more openings 36 may be formed in the holder 30 to provide a component mounting space such as a capacitor element.

Here, one side of the battery cell 10 is provided to accommodate the protection circuit module 20, and provides a cover case 60 coupled to the battery cell 10.

The cover case 60 is preferably made of a "C" shape, it may be made of a variety of shapes depending on the case.

The cover case 60 may include an attaching part 62 for fixing the battery case 10 when the cover case 60 is in contact with the battery cell 10. In this case, the attaching part 62 may include the attaching part 62. It may be provided to about 3mm.

Here, the 3mm is for illustrating the length of the attachment portion 62, but is not limited thereto, and may have an attachment portion 62 of various lengths.

On the other hand, in order to prevent the flow of the battery cell 10 may be fixed to the label to be described later the circumferential surface of the portion that the outer portion 62 and the battery cell 10 is coupled.

In this manner, the mechanical strength of the battery pack 100 can be increased.

The cover case 60 may include an attachment portion 64 on one side such that the submersion label 66 may be attached. Here, the attachment portion 64 may be provided at various positions of the cover case 60, and preferably may be provided on the front portion of the cover case 60 as shown in FIG.

Here, the immersion label 66 is a label for checking the immersion state, when immersion occurs in the battery pack 100, it is provided to be able to check the immersion state by the change of color or the bleeding of the markings displayed on the immersion label 66 do.

The immersion label 66 is attached to the attachment portion 64 provided on the cover case 60, it is possible to check whether the battery pack 100 is immersed, in addition to the cover case 60 provided in various locations Can be.

On the other hand, the cover case 60 is firmly coupled to one side of the battery cell 10 by using the external part 62 to increase the flow prevention function of the protection circuit module 20, the protection circuit module 20 and The holder 30 is to be protected from external force.

When the cover case 60 is wrapped in a separate label 96, the strength of the battery pack 100 may be further increased.

In this case, the cover case 60 and the holder 30 may include fitting grooves 68 and fitting protrusions 38 respectively corresponding to the fitting cases so as to be firmly coupled to each other. That is, the holder 30 may be supported by the cover case 60 to prevent flow.

Herein, an opening 93 may be provided in the double-sided tape 92 of the upper case 70 so that the negative electrode terminal 12 of the battery cell 10 is exposed by the opening 93.

On the other hand, the battery cell 10 of the present invention is provided with an upper case 70 to accommodate the upper portion of the battery cell 10 is connected to the negative terminal plate 40, the lower portion of the battery cell 10 is connected to the positive electrode terminal plate 50 Lower case 80 is provided to accommodate the.

Between the upper case 70 and the lower case 80 and the upper and lower portions of the battery cell 10 is interposed with a double-sided tape 92, the adhesive is coated on both sides are coupled to each other, the double-sided tape 92 As a result, the flow of the upper case 70 and the lower case 80 in the battery cell 10 may be prevented.

Wherein both sides of the cover case 60 and one side of each of the upper case 70 and the lower case 80 is firmly fastened to each other fastening grooves 69 and corresponding to each to improve the mechanical strength of the battery pack 100 and Fastening protrusions 72 and 82 are formed.

The fastening protrusions 72 and 82 include trapezoidal protrusions 72a and 82a and connecting portions 72b and 82b for connecting the protrusions 72a and 82a to the upper case 70 or the lower case 80. The fastening groove 69 has a shape corresponding to the fastening protrusions 72 and 82 so as to be fitted to the fastening protrusions 72 and 82.

Here, the shape of the fastening protrusions 72 and 82 is not necessarily limited to a trapezoidal shape, but is provided in various shapes having a larger width than the connecting portions 72b and 82b to be fitted and coupled to the fastening groove 69 to enable a solid fastening. If so, it may be made in any shape.

Here, the battery cell 10 of the present invention, when the upper case 70 and the lower case 80 is coupled to the upper and lower parts, the remaining part that is not coupled to the cover case 60 in the battery cell 10, that is, the battery cell The height of the other end of the upper case 70 and the lower case 80 at the other side of the battery cell 10 by the combination of the upper case 70 and the lower case 80 to the other side of the (10) It may be higher than the height of the other side of the cell.

Accordingly, a spacer tape 94 is provided to cover the front part, the other part, and the rear part of the battery cell 10 simultaneously with the upper case 70 and the lower case 80 coupled to the battery cell 10. do.

The spacer tape 94 forms a smooth surface on the other side of the battery cell 10.

Here, the spacer tape 94 is the other side of the battery cell 10 between the other end of the upper case 70 and the lower case 80 when wrapping the front portion, the other side and the rear portion of the battery cell 10 at the same time Even if a spacer, i.e., a void due to a difference in mutual height, is formed in the portion, a smooth surface may be formed when the shape thereof is not changed.

The surface of the spacer tape 94 is a label 96 to be described later is wrapped from the other side of the battery cell 10 to the outer portion 62 of the cover case 60 via the front and rear parts The portion of the label 96 corresponding to the other side of the battery cell 10 may occur as the upper case 70 and the lower case 80 have different heights as compared to the other side of the battery cell 10. It prevents possible distortion.

The spacer tape 94 may be formed in any one of a substantially “U” or “?” Shape, but may be formed in any shape as long as it can form a smooth surface on the other side of the battery cell 10.

Meanwhile, the label 96 has a front portion from the other side of the battery cell 10 in a state where the upper case 70, the lower case 80, the cover case 60, and the spacer tape are coupled to the battery cell 10. And by wrapping up to the outer portion 62 of the cover case 60 via the back portion to prevent the flow of the battery cell 10 and increase the mechanical robustness.

Here, the label 96 may display one or more of text, images or graphics on the outer surface. That is, it is possible to display a trademark, a brand name, a manufacturer, or the like of the product through the letter, image, or graphic.

(Combination Example)

Hereinafter, embodiments of the combined process of the battery pack 100 having the above-described structure will be described in detail with reference to the drawings.

First, as shown in FIG. 1, a battery cell 10 is provided, and an insulating tape 90 coated with adhesive on both sides is coupled to one side of the battery cell 10.

Subsequently, one side of the negative electrode terminal plate 40 and the positive electrode terminal plate 50 are coupled to both sides of the protective circuit module 20 by soldering or spot welding, and then a holder ( The fixing protrusion 32 of the 30 is inserted into the protective circuit module 20 and the holder (with the negative terminal plate 40 and the positive terminal plate 50 fixed between the protective circuit module 20 and the holder 30). 30) are fixed to each other.

At this time, the holder 30 and the cover case 60 are firmly coupled to each other in a fitting manner by the fitting groove 68 and the fitting protrusion 38 formed, respectively.

Subsequently, the holder 30 is coupled using the insulating tape 90 attached to one side of the battery cell 10.

Subsequently, the negative electrode terminal plate 40 and the positive electrode terminal plate 50 are coupled to the negative electrode terminal 12 and the positive electrode terminal 14 of the upper and lower portions of the battery cell 10.

Next, the battery cell 10 to which the protection circuit module 20, the holder 30, the negative electrode terminal plate 40, and the positive electrode terminal plate 50 are coupled is coupled to the cover case 60.

In this case, the attaching part 62 provided on the cover case 60 is coupled to the battery cell 10.

Next, the cover case 60 is coupled, and a double-sided tape 92 is attached to the upper and lower portions of the battery cell 10, and the upper case 70 and the lower case using the double-sided tape 92. 80 are respectively coupled to the battery cells 10.

Here, the fastening protrusions 72 on one side of the upper case 70 and the lower case 80 are fitted to each other in the fastening grooves 69 on both sides of the external part 62 formed in the cover case 60.

Next, in a state where the upper case 70 and the lower case 80 are coupled to the battery cell 10, the front part, the back part and the other part of the battery cell 10 are simultaneously wrapped by the spacer tape 94. The wrapped portion is wrapped with the label 96 again, and the outer portion 62 is also wrapped with the label 96.

Subsequently, the submersion label 66 is attached to the attachment portion 64 provided on the cover case 60.

The above-described combining process of the battery pack 100 is merely to exemplify the present invention, and the scope of protection of the present invention is not limited to the above-described embodiment, and it is apparent that a part of the combining process may be changed.

As mentioned above, although the present invention has been described by way of limited embodiments and drawings, the technical idea of the present invention is not limited thereto, and a person having ordinary skill in the art to which the present invention pertains, Various modifications and variations may be made without departing from the scope of the appended claims.

Since the accompanying drawings are for understanding the technical spirit of the present invention together with the detailed description of the following invention, the present invention should not be construed as limited to the matters shown in the following drawings.

1 is an exploded perspective view of a battery pack according to the present invention.

2 is a perspective view of a battery pack according to the present invention;

3 is a cross-sectional view of a battery pack according to the present invention.

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

10: battery cell 12: negative terminal

14: positive terminal 20: protective circuit module

22: fixing groove 30: holder

32: fixing protrusion 34: seating portion

36: opening 38: fitting

40: negative electrode terminal plate 50: positive electrode terminal plate

60: cover case 62: external parts

64: Attachment 66: Immersion Label

68: fitting groove 69: tightening groove

70: upper case 72: fastening protrusions

72a: projection 72b: connection

80: lower case 82: fastening protrusion

82a: projection 82b: connection

90: insulating tape 92: double-sided tape

93: opening (of double-sided tape) 94: spacer tape

96: Label 100: Battery pack

Claims (5)

A battery cell for supplying charged power; A protection circuit module disposed on one side of the battery cell to prevent overcharge or overdischarge; A negative electrode terminal plate having a “a” shape and connecting the protective circuit module and the negative electrode terminal to each other; A positive electrode terminal plate having a "a" shape and connecting the boro circuit module and the positive electrode terminal to each other; A holder provided between one side of the battery cell and the protection circuit module to seat the protection circuit module; An adhesive tape is coated on both sides to bond one side of the battery cell and the holder to each other; An upper case provided to receive an upper portion of a battery cell to which the negative terminal plate is connected; A lower case provided to receive a lower portion of the battery cell to which the positive electrode terminal plate is connected; And A cover case provided to receive the protection circuit module and coupled to the side of the battery cell; And a double-sided tape for coupling the upper case and the lower case to the battery cell. Fastening grooves are formed on both sides of the cover case, and fastening protrusions are formed on the upper case and the lower case, and are configured to be coupled to each other. The fastening protrusions have a trapezoidal protrusion, and the protrusions are provided on the upper case or the lower case. It includes a connecting portion for connecting, the fastening groove is made of a shape corresponding to the fastening protrusion, the holder and the cover case further includes a corresponding fitting groove and the fitting protrusion to each other to enable the mutual coupling, the holder And the protection circuit module further includes a fixing groove and a fixing protrusion corresponding to each other to enable mutual fixing. delete delete delete The method of claim 1, The negative electrode terminal plate and the positive electrode terminal plate, And the protective circuit module and the negative electrode terminal and the positive electrode terminal are coupled to each other by soldering or spot welding.

Images