KR20090011995A - Battery pack - Google Patents

Abstract

A battery pack is provided to improve the assembly strength, to prevent the fault due to the contamination of a battery cell and to facilitate the replace of poor components by jointing a cover case, a first sub-case and a second sub-case. A battery pack(100) comprises a battery cell(10) which is provided with an anode terminal(12) at the upper part and a cathode terminal at the lower part and supplies the charged power; a protection circuit module(20) for preventing overcharging or overdischarging, which is arranged at one side of a battery cell; an anode terminal plate(40) which connects the protection circuit module and anode terminal; a cathode terminal plate(50) which connects the protection circuit module and cathode terminal; a holder(30) which is provided between the one-side of a battery cell and the protection circuit module and settles the protection circuit module; the upper case(70) accommodating the upper part of the battery cell connected to the anode terminal; the lower case(80) accommodating the lower part of the battery cell connected to the cathode terminal; a cover case(60); an insulating tape(90) which binds the upper case, holder and lower case to the battery cell by surrounding the upper part, side part and lower part of the battery cell at the same time; and a cover case which is prepared to accommodate the protection circuit module, and is combined in the battery cell.

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 plane.

A battery pack according to the present invention for achieving the above object, the upper portion is provided with a negative terminal, the lower portion is provided with a positive electrode, a 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 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 an insulating tape formed in a “shape” to couple the upper case, the holder and the lower case to the battery cell by simultaneously wrapping the upper, one side and the lower part of the battery cell. Includes a cover case coupled to, both sides of the cover case is formed with a "home" shaped fastening grooves, the upper case and the lower case are formed with a fastening protrusion protruding in a direction perpendicular to each other It is configured to be possible.

Alternatively, the insulating tape, three insulating tapes having a "one" shape is coupled between the battery cell and the upper case, the holder and the lower case, respectively, to be provided in a "c" shape as a whole. It may be.

The fastening protrusion may include a protrusion having a bow or trapezoidal shape, and a connection part connecting the protrusion to the upper case and the lower case at a right angle, and the maximum width of the protrusion may be greater than the width of the fastening groove.

In addition, the protrusion of the fastening protrusion may additionally include a cutout to facilitate coupling with the fastening groove.

Here, the fastening holding portion is formed to extend to the lower side of the fastening groove of the cover case, the fastening holding portion may include a depression for preventing the end of the upper case and the lower case.

In addition, the coupling retaining portion of the cover case is formed with an auxiliary coupling groove, one side of the upper case and the lower case may further include an auxiliary projection coupled to correspond to the auxiliary coupling groove.

In addition, an outer portion for preventing flow may be formed along the circumference of the upper case and the lower case.

In addition, the battery cell further includes a spacer tape for forming a smooth surface 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 in a state where the upper case and the lower case are coupled to the battery cell. can do.

In addition, the holder and the cover case further includes a fitting groove and a fitting protrusion corresponding to each other so as to be fitted to each other.

The holder and the protection circuit module may further include fixing grooves and fixing protrusions corresponding to the holders and the protection circuit modules.

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.

Alternatively, the negative electrode terminal plate and the positive electrode terminal plate may be coupled to the protective circuit module, the negative electrode terminal, and the positive electrode terminal by spot welding, respectively.

According to the present invention by the configuration as described above, by implementing a snap fastening between the cover case, the upper case and the lower case of the present invention can improve the overall assembly strength of the battery pack to protect the battery pack safe from external shocks It can exert an effect.

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 present invention includes a cover case, a bow or trapezoidal protrusion corresponding to each of the fastenings between the upper case and the lower case, and a connecting portion connecting the protrusion to the upper case and the lower case at right angles, the maximum width of the protrusion Is formed larger than the width of the fastening groove.

Accordingly, since the protrusions of the upper case and the lower case are fastened at right angles to the fastening grooves of the cover case, the fastening force can be exerted not only in the longitudinal direction of the cover case but also at right angles of the cover case.

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.

Further, according to the present invention, by arranging the protection circuit module, the negative terminal and the positive terminal on different sides, it is possible to achieve the effect that the battery pack can be manufactured in a form close to the square on the plane.

In addition, when the label is wrapped in the battery cell, it is possible to prevent the distortion of the label due to the height difference between the upper case and the lower case and the battery cell to enhance the aesthetics of the product and increase 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, thereby making it possible to employ the battery pack of the present invention 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 terminal plate 50 provided in a "b" shape to connect the boro circuit module 20 and the positive 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 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; The upper case 70, the holder 30, and the lower case 80 are coupled to the battery cell 10 by simultaneously wrapping the upper, one side, and the lower part of the battery cell 10. Insulating tape 90; And a cover case 60 provided to accommodate the protection circuit module 20 and coupled 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, a positive terminal 14 is provided on the lower side, the battery cell 10 is a negative electrode sheet And an electrode stacking unit composed of an 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. , To prevent the inflow of overcurrent, or to block a 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 of the battery cell 10, etc., and the service life of the battery cell 10 It extends.

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, the front portion is coupled to the protective circuit module 20, the rear portion is coupled to one side of the battery cell 10, the protective circuit module 20 by seating the protective circuit module 20 Serves to prevent the flow of.

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.

Here, an insulating tape 90 having a “C” shape coated with adhesive on both surfaces thereof is provided, and the upper, one side, and the lower parts of the battery cell 10 are simultaneously wrapped by the insulating tape 90 to form a battery cell. The holder 30 and the upper case 70 and the lower case 80 to be described later are coupled to the 10.

Alternatively, the insulating tape may include three insulating tapes 90 having a “one” shape between the battery cell 10, the upper case 70, the holder 30, and the lower case 80. Coupled to each, may be provided as a "c" shape as a whole, in addition can be combined in a variety of 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 provided with fixing grooves 22 and fixing protrusions 32 corresponding to the holders 30 and the protection circuit modules 20, respectively.

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.

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 upper part of the battery cell 10, between the holder 30 and one side of the battery cell 10, and the lower case 80 and the lower part of the battery cell 10. Between each of the interposed between the "c" -shaped insulating tape (90) coated with adhesive on both sides, the insulating tape 90 by the insulating tape 90 in the upper case 70, the holder ( 30) and the lower case 80 can be prevented from flowing.

In this case, when the insulating tape 90 is formed in a “c” shape, the insulating tape 90 may be coupled to an upper or lower portion of the battery cell 10, that is, a portion coupled to the negative electrode terminal 12 and the positive electrode terminal 14. Each opening 93 may be additionally provided to expose the negative electrode terminal 12 and the positive electrode terminal 14.

Accordingly, the negative electrode terminal plate 40 and the positive electrode terminal plate 50 may be easily coupled to the negative electrode terminal 12 and the positive electrode terminal 14 exposed by the opening 93.

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

Here, the fastening protrusions 72 and 82 are bows or trapezoidal protrusions 72a and 82a, and the connecting portions 72b and 82b connecting the protrusions 72a and 82a to the upper case 70 or the lower case 80 at right angles. ), And the fastening groove 69 is formed in a "one" shape so as to be fitted to the fastening protrusions 72 and 82.

Here, the bow refers to a shape consisting of an arc and a line segment connecting the two end points, and the protrusions 72a and 82a are preferably formed in a direction in which the arc faces the fastening groove 69.

In addition, the protrusion of the fastening protrusion may further include a cutout 72c to facilitate coupling with the fastening groove.

Here, the maximum widths of the protrusions 72a and 82a may be greater than the width of the fastening groove 69.

Therefore, when the bow or trapezoidal protrusions 72a and 82a are pushed in the direction of the fastening groove 69 in order to forcibly fit in the fastening groove 69, the fastening grooves 72a and 82a are narrower than their widths. When entering (69), momentarily elasticity is generated and the width becomes narrower.

Accordingly, the narrowed protrusions 72a and 82a are inserted into the fastening grooves 69. After the insertion, the protrusions 72a and 82a return to their original widths, thereby increasing the width of the protrusions 72a and 82a. It is larger than the width of the fastening groove 69 to prevent the protrusions 72a and 82a from being separated from the fastening groove 69.

In addition, the fastening grooves 69 at both sides of the cover case 60 are formed at both ends of the cover case 60 at right angles in the longitudinal direction of the cover case 60, and fastened at both ends of the cover case 60. Under the portion where the groove 69 is formed, the fastening holding portion 67 is formed to extend.

In addition, the fastening holding part 67 is additionally formed with a recessed portion 67a for preventing end separation when the upper case 70 and the lower case 80 are coupled to each other.

That is, the fastening protrusions 72 and 82 formed on the upper case 70 and the lower case 80 are fitted to the fastening grooves 69 of the cover case 60, thereby providing only the longitudinal direction of the cover case 60. Rather, it can exert a solid fastening force up to the perpendicular direction of the cover case 60.

In addition, the coupling retaining portion 67 of the cover case is formed with an auxiliary coupling groove 65, one side of the upper case 70 and the lower case 80 is coupled to correspond to the auxiliary coupling groove (65). Auxiliary protrusions 76 and 86 may be additionally included to more firmly couple the cover case to the upper case and the lower case.

On the other hand, the upper case 70 and the lower case 80 of the outer wall along the circumference of the lower side of the fastening projections 72 and 74 formed at one end to correspond to the fastening grooves 69 on both sides of the cover case 60. External portions 74 and 84 are formed in a shape.

Here, the fastening holding part 67 of the cover case 60 is coupled to the fastening protrusions 72 and 82 of the upper case 70 and the lower case 80 to the fastening groove 69 of the cover case 60. In this case, the upper case 70 and the lower case 80 are coupled to external parts 74 and 84 provided on the lower side of the fastening protrusions 72 and 82.

As a result, the fastening holding part 67 is coupled to the external parts of the upper case 70 and the lower case 80, thereby preventing the flow between the cover case 60, the upper case 70, and the lower case 80. The coupling between the cover case 60, the upper case 70 and the lower case 80 is maintained firmly.

Here, the shape of the fastening protrusions 72 and 82 is not necessarily limited to a bow or trapezoidal shape, and is provided in various shapes having a larger width than the connection portions 72b and 82b and the fastening groove 69, and the fastening groove ( 69) It can be made into any shape as long as it can be firmly fastened by being fitted to it.

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 other side of the lower case may be lower than the height of the upper case 70 and the lower case 80 by the combination of the upper case 70 and the lower case 80.

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

Accordingly, the surface of the battery cell 10 is formed by the spacer tape 94.

Here, the spacer tape 94 is the other side portion of the battery cell 10 between the other end of the upper case 70 and the lower case 80 when the front portion, the other side and the back portion of the battery cell 10 is simultaneously wrapped Since a smooth surface can be formed even when a space, i.e., a void occurs due to a difference in mutual heights, does not change its shape, it is preferably made of a material having relatively rigidity.

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 distortions.

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.

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 Bonding Example)

First, in the case where the insulating tape has a "-" shape, the coupling example is as follows.

As shown in FIG. 1, a battery cell 10 is provided, and an “c” shaped insulating tape 90 having an adhesive coated on both surfaces thereof is provided at upper, lower, and one sides of the battery cell 10. Combined.

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 to the battery cell 10 by using the insulating tape 90 attached to one side of the battery cell 10.

Here, 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 exposed by the opening 93 of the insulating tape 90.

Accordingly, the battery cell 10 in 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.

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

Next, the upper case 70 and the lower case 80 using the insulating tape 90 adhered to the battery cell 10 on the upper and lower portions of the battery cell 10 to which the cover case 60 is coupled. Are respectively combined.

At this time, the fastening protrusion 72 of one side of the upper case 70 and the lower case 80 is fitted to each other in the fastening grooves 69 of both sides of the external part 62 formed in the cover case (60).

When 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 parts 62 formed on the cover case 60, the cover case The fastening holding part 67 extended to the lower side of the fastening groove 69 of the 60 is coupled to the external parts of the upper case 70 and the lower case 80.

In addition, the auxiliary protrusions (76,86) formed in the fastening holding portion (67) of the upper case 70 and the lower case 80, and the auxiliary coupling groove (65) formed in the cover case 60 is further fitted and coupled. It can be firmly combined.

Accordingly, the flow between the cover case 60, the upper case 70 and the lower case 80 is prevented, the fastening groove 69 between the cover case 60, the upper case 70 and the lower case 80 ) And the fastening by the fastening protrusions 72 are firmly maintained.

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 together by the label 96.

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

Second Bonding Example

In addition, a coupling embodiment when the insulating tape 90 coupled to the battery cell 10 is provided with three insulating tapes having a “one” shape is as follows.

As shown in FIG. 1, a battery cell 10 is provided, and an insulating tape 90 having a “one” shape 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 to the battery cell 10 by 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.

As a result, the battery cell 10 coupled with the protection circuit module 20, the holder 30, the negative electrode terminal plate 40, and the positive electrode terminal plate 50 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, an insulating tape 90 having a “one” shape is attached to upper and lower portions of the battery cell 10 to which the cover case 60 is coupled, and the insulating tape 90 is used. The upper case 70 and the lower case 80 are respectively coupled to the battery cell 10.

At this time, 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.

When 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 parts 62 formed on the cover case 60, the cover case The fastening holding part 67 extended to the lower side of the fastening groove 69 of the 60 is coupled to the external parts of the upper case 70 and the lower case 80.

In addition, the auxiliary protrusions (76,86) formed in the fastening holding portion (67) of the upper case 70 and the lower case 80, and the auxiliary coupling groove (65) formed in the cover case 60 is further fitted and coupled. It can be firmly combined.

Accordingly, the flow between the cover case 60 and the upper case 70 and the lower case 80 is prevented so that the fastening groove between the cover case 60, the upper case 70 and the lower case 80 ( 69) and fastening by the fastening protrusions 72 is maintained firmly.

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.

Next, the immersion label 66 is attached to the attachment portion 64 provided on the upper portion of the cover case 60.

Coupling embodiments of the battery pack 100 are merely to illustrate the present invention, and the scope of protection of the present invention is not limited to the above embodiments, and a part of the coupling 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 part 65: auxiliary coupling groove

66: immersion label 67: fastening aid

67a: depression 68: fitting groove

69: fastening groove 70: upper case

72: fastening protrusion 72a: protrusion

72b: connection 72c: incision

74: external part (upper case) 76: auxiliary projection

80: lower case 82: fastening protrusion

82a: projection 82b: connection

82c: incision 84: external part (of the lower case)

86: auxiliary protrusion 90: insulating tape

93: opening (of insulating tape) 94: spacer tape

96: Label 100: Battery pack

Claims (9)

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 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 An insulating tape provided in a “c” shape to couple the upper case, the holder and the lower case to the battery cell by simultaneously wrapping the upper, one side and the lower part of the battery cell; A cover case provided to receive the protection circuit module and coupled to the battery cell; Both sides of the cover case is formed a coupling groove of the "one" shape, the upper case and the lower case are formed in each of the fastening protrusions protruding in a direction perpendicular to the battery pack configured to be fitted. The method of claim 1, The fastening protrusion includes a protrusion having a bow or trapezoidal shape, and a connection portion connecting the protrusion to the upper case and the lower case at right angles. The maximum width of the protrusion is a battery pack, characterized in that formed larger than the width of the fastening groove. The method of claim 2, The protrusion of the fastening protrusion is a battery pack, characterized in that it further comprises an incision to facilitate coupling with the fastening groove. The method of claim 3, The fastening holding part extends to the lower side of the fastening groove of the cover case, The fastening holding unit includes a battery pack, characterized in that it comprises a recess for preventing the end of the upper case and the lower case. The method of claim 4, wherein An auxiliary coupling groove is formed in the fastening holding part of the cover case, and one side of the upper case and the lower case further includes an auxiliary protrusion coupled to the auxiliary coupling groove. The method of claim 5, Battery pack, characterized in that the outer portion is formed for preventing the flow along the circumference of the upper case and the lower case. The method of claim 6, The holder and the cover case is a battery pack, characterized in that it further comprises a fitting groove and the fitting protrusion corresponding to each other to enable the fitting. The method of claim 7, wherein The holder and the protective circuit module, characterized in that the battery pack further comprises a fixing groove and a fixing protrusion corresponding to each other to be fixed. The method of claim 8, 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.

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