KR20080018476A - Can including a hanging cavity and rechargeble battery using the same - Google Patents

Abstract

A can integrated with a hanging groove, and a secondary battery containing the can are provided to allow a can to be attached to or detached from an electronic product by using a can without additional cover member. A can integrated with a hanging groove is a rectangular can having the cavity inside, wherein the one end is open and a hanging groove(3) is formed in at least one part of the external surface of the can. Preferably the external surface of the can is anodized, painted for insulation and/or is adhered with an insulating film. Preferably the hanging groove is formed at the external bottom surface(5) of the can and has a depth of 10-50 % of the can thickness.

Description

Can Including a Hanging Cavity And Rechargeble Battery Using The Same}

1 is a rear perspective view showing an embodiment of a hook groove integrated according to the present invention.

FIG. 2 is a cross-sectional view taken along the line II ′ of FIG. 1.

3A to 3E are perspective views showing various shapes of the hook groove.

4 is an exemplary view showing anodized and painted cans.

Figure 5 is a perspective view of a secondary battery using a hook groove integrated can according to the present invention.

6 is a perspective view showing an example of a secondary battery coated or anodized the exterior of the can;

FIG. 7 is an exploded perspective view schematically illustrating a protection circuit module attached to a secondary battery using a hanger integrated can. FIG.

<Explanation of symbols for the main parts of the drawings>

1: pillar

3, 9a, 9b, 9c, 9d, 9e, 15, 59, 112: hanger groove

5: floor surface

Can: 11a, 11b, 11c, 11d, 11e, 13, 57, 100

17: hanger groove 21, 116: electrode terminal

23, 114: Cap plate 25, 120: Insulation plate

27: terminal plate 29, 101: cap assembly

31: gasket 33: terminal through

35: electrolyte injection hole 39: lead through hole

43: insulation case 51: electrode assembly

53: cathode terminal 55: anode terminal

103: can terminal 110: bare cell

118, 122: connection lead 124: protective circuit board

126, 128: connection terminal

The present invention relates to a secondary battery can and a secondary battery manufactured using the same, and particularly, a hook groove integrated can and a secondary battery using the same, having a hook groove for separating a product manufactured using the can on the can itself without a cover member. It is about.

Secondary batteries (secondary batteries), unlike primary batteries that can not be charged, refers to a battery that can be charged and discharged, and is used in various fields ranging from cellular phones, notebook computers, camcorders, and hybrid vehicles. In particular, the lithium secondary battery has an operating voltage of 3.6 V, which is three times higher than that of a nickel-cadmium (Ni-Cd) battery or a nickel-hydrogen battery, which is widely used as a power source for electronic equipment. In addition, lithium secondary batteries have a high energy density per unit weight, so that they can be manufactured in a small or thin form compared to other batteries, and thus the use field is rapidly increasing.

The lithium secondary battery mainly uses a lithium oxide as a positive electrode active material and a carbon material as a negative electrode active material. In addition, lithium secondary batteries are manufactured in various shapes, and typical examples thereof include cylindrical, rectangular and pouch types.

Of these, the rectangular secondary battery is based on a bare cell, and is used as a commercial item by forming a protective circuit or an additional exterior.

In more detail with respect to the rectangular secondary battery, first, the bare cell includes an electrode assembly, a can containing the electrode assembly, and a cap assembly coupled to the can. In addition, the protection circuit is manufactured in a form attached to the bare cell to ensure the safety of the secondary battery between the terminal drawn out from the bare cell and the terminal of the external device. This protection circuit is used to prevent overheating and explosion of the secondary battery in the event of an electrical failure such as a short circuit, disconnection or short circuit, and to ensure stable operation of the secondary battery. Additional exterior means a plastic material for fixing and protecting the bare cell or the bare cell and the protection circuit, a film cover for wrapping and insulating the can and the can of the bare cell.

In particular, in the case of a square secondary battery, unlike a pouch type secondary battery, an aluminum-based metal that can guarantee a mechanical strength of the electrode assembly exterior to a predetermined level or more is used. This has the advantage of not needing the plastic system case used in the pouch type, and has the advantage that the can itself can be used as either the positive electrode or the negative electrode.

However, when the can itself is used as the positive electrode or the negative electrode, that is, the drawing terminal, it is not easy to secure the safety of the secondary battery by the protection circuit, thereby solving this problem by exposing only the can exterior near the negative electrode.

To this end, in the case of a rectangular secondary battery, in particular, a secondary battery using a can, an exposed portion of the can is packaged with an insulating film describing a trademark, precautions, product information, and the like, to insulate the secondary battery from the external environment.

Separately, a secondary battery using a can (hereinafter, referred to as a "can type secondary battery") is a conventional method of using a separate hard cover to fix the product to which the secondary battery is used. That is, a protective circuit is attached where the lead terminals of the positive and negative electrodes are located, and an upper sheath (where the lead terminal is drawn for convenience) is attached or molded to cover the protective circuit. In addition, the bottom cover of the can, that is, the bottom of the can is attached to the bottom cover is formed with a hook groove to detach the secondary battery from the electronic product. For this purpose, an adhesive material such as an adhesive or an adhesive tape is added to fix the lower cover to the can between the bottom and the bottom of the can and the lower cover.

However, the space for attaching the hard cover and the additional exterior of the adhesive member serves as a factor that inhibits the miniaturization, thinning, and high capacity of small electronic products using can type secondary batteries and secondary batteries using such cans. In addition, when a large number of secondary battery cells are overlapped, such as a hybrid vehicle, the accumulation of space for additional exterior added to the secondary battery becomes a problem that occupies a space for installing several or more secondary battery cells. have.

In other words, it is necessary to increase the capacitance of the secondary battery by excluding the additional exterior of the can type secondary battery, and to reduce the cost by simplifying the additional exterior attachment process.

Accordingly, it is an object of the present invention to provide a hook groove integrated can and a secondary battery using the same, having a hook groove for separating a product manufactured using the can and the can in the can itself without a separate cover member.

In addition, another object of the present invention is to paint the exterior of the hanger-integrated can to reduce the production cost through the insulation, information entry and simplification of the process.

Another object of the present invention is to suggest the depth and position of the hook groove formed when using the can and the secondary battery using the same, to prevent damage to the can and the secondary battery according to the adoption of the hook groove in advance and to present improved performance.

Another object of the present invention is to provide a hanger groove integrated can and a method for reasonably treating the exterior of the can and the secondary battery when manufacturing the secondary battery using the same.

In order to achieve the above object, the canister with a hook groove integrated according to the present invention has one side open and is formed in a rectangular parallelepiped shape having a cavity therein, wherein the hook groove is formed on at least one outer surface of the can. It is done.

The outside of the can is characterized in that it is anodized (Anodizing).

The outside of the can is characterized in that it is painted for insulation.

The outside of the can is characterized in that the insulating film is attached.

The hook groove is formed on the outer bottom surface of the can.

Depth of the hook groove is characterized in that 10% to 50% of the can thickness.

Depth of the hook groove is characterized in that 0.1mm to 0.5mm.

The hook groove is characterized in that formed in any one of the shape of a rectangle, oval, slit (Slit), the opening polygon and the opening oval.

An outer film of the can is attached to the outside of the can, and the outer color of the can to be coated is an index corresponding to the color of the outer film.

The can is characterized in that for receiving a charge filled with electricity in the cavity.

In addition, a secondary battery using a hanger-integrated can according to the present invention includes an electrode assembly having lead-out terminals of a positive electrode and a negative electrode; A can of a rectangular parallelepiped shape having one side open and a cavity formed to receive the electrode assembly; And a cap assembly coupled to the opening of the can, wherein the can has a hook groove formed on at least one outer surface thereof.

The outside of the can is characterized in that it is anodized (Anodizing).

The outside of the can is characterized in that it is painted for insulation.

An outer film of the can is attached to the outside of the can, and the outer color of the can to be coated is an index corresponding to the color of the outer film.

The hook groove is characterized in that formed on the outer bottom surface of the pillar.

Depth of the hook groove is characterized in that 10% to 50% of the can thickness.

Depth of the hook groove is characterized in that 0.1mm to 0.5mm.

The hook groove is characterized in that formed in any one of the shape of a rectangle, oval, slit (Slit), the opening polygon and the opening oval.

The anode terminal is connected to the can, and the can is characterized in that it comprises the can terminal portion that is not anodized or unpainted to use the can as an anode terminal.

The outside of the can is characterized in that the insulating film is attached.

The secondary battery may further include a protection circuit module electrically coupled with the lead terminal and having a circuit for maintaining stability of the electrode assembly.

Other features and operations of the present invention in addition to the above objects will become apparent from the detailed description of the embodiments with reference to the accompanying drawings.

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 7.

1 is a rear perspective view showing an embodiment of a hook groove integrated according to the present invention. 2 is a cross-sectional view taken along the line II ′ of FIG. 1.

1 and 2, the can according to the present invention is formed in a well shape in which one side (part not shown) is opened. In Figures 1 and 2 the bottom part 5 of the can is shown facing up with the opening facing down. As shown in Figure 1 and 2, the can according to the embodiment of the present invention has a hook groove 3 is formed on the bottom surface. The hook groove 3 is used to allow the user to easily separate the can from an external device such as an electronic device after the finished product is attached to another electronic device. 1 and 2 are examples and various application examples will be described later.

The hook groove 3 will be described in more detail with reference to FIG. 2. The can may be manufactured by welding the bottom surface 5 to the pillar 1, but the molding may be performed by using a deep-drawing method in which the raw material is gradually pressed for an efficient process. As a result, the thickness D _BO of the bottom surface 5 and the thickness D _BW of the pillar 1 are about the same, or the thickness D _BW of the pillar 1 is equal to the thickness D of the bottom surface 5. _A little thinner than _BO ). On the other hand, the depth (D _S ) of the hook groove 3 can be formed to any thickness within the thickness (D _BO ) of the bottom surface 5, but 20% to 50 of the thickness (D _BO ) of the bottom surface (5) It is desirable to maintain a thickness between%. This is the minimum thickness that cans can withstand from the internal pressure generated during the manufacture and use of secondary batteries, and the minimum depth to allow the user's fingernails or tools to be caught in the hook groove 3. In particular, when the can is manufactured using an aluminum metal, there is a limit of strength and tensile force of the metal of the aluminum system, and therefore it is not desirable to mold the can out of this range. However, when the strength and the tensile force are greatly extended, it is also possible that the depth D _S of the hook groove 3 exceeds 50% of the thickness D _B0 of the bottom surface 5. In addition, when the hook groove 3 is formed in the pillar 1 portion of the can, it is preferable to determine the depth DS of the hook groove 3 in comparison with the thickness D _BW of the can pillar 1. In actual production of cans, products having a thickness of about 1 mm or less have been released, and recently, they have been produced to have a thickness of about 0.8 mm. In the case of a product whose thickness of the can is 0.8 mm, the depth of the hook groove 3 is preferably determined within a range of 0.1 mm or more and 0.4 mm or less. That is, when the depth of the hook groove 3 is less than 0.1mm, the user's fingernails or tools cannot lift the can. In addition, when the depth of the hook groove 3 exceeds 0.4mm, the hook groove 3 part is weaker to the internal / external pressure than other parts of the can, and the hook groove part may burst. In addition, in FIG. 2, the sides of the hook groove 3 are expressed to be perpendicular to each other, but may be formed to be inclined as shown by the dotted line K.

Here, the present invention is not limited to the shapes of the cans described with reference to FIGS. 1 and 2, and may be applied to various shapes such as polygonal columns such as elliptical columns, triangles, or quadrangles.

3A to 3E are perspective views illustrating various shapes of the hook groove.

3A to 3E, the hook grooves 9a, 9b, 9c, 9d, and 9e may be formed in various forms. The position and shape of the hook grooves 9a, 9b, 9c, 9d, and 9e are preferably determined in consideration of the user's convenience and the shape of the external device to which the can is attached. In the detailed description of the present invention, as shown in FIGS. 3A to 3C, the hook grooves 9a, 9b and 9c are formed in a closed form in the bottom sides of the cans 11a, 11b and 11c, or one side as shown in FIGS. 3d and 3e. It may be formed in an open form so that one side is biased. In FIGS. 3A to 3C, the center is positioned at the center, but may be formed to be biased around the bottom surface of the cans 11a, 11b and 11c. It is desirable to select this properly in consideration of engagement with the electronic device or external device on which the can is mounted.

FIG. 3A illustrates the rectangular hanger 9a described with reference to FIGS. 1 and 2. And 3b shows a hook groove (9b) formed in an elliptical shape. In addition, FIG. 3C illustrates a hanger 9c having a slit shape having a shape similar to that of a rectangle but having a very long longitudinal direction compared to a transverse length. The hanger grooves 9a, 9b, and 9c of FIGS. 3a to 3c are advantageous to adopt when the detachable direction of the can is relatively free compared to FIGS. 3d and 3e.

On the other hand, Figure 3d and 3e is a hook groove (9d, 9e) is formed in the form of an open from the center of the bottom surface outward, or from the center surface to the outside (Open). For this reason, it is preferable that the cans in which the hook grooves 9d and 9e shown in Figs.

4 is an exemplary view showing an anodized and painted can.

Referring to FIG. 4, the can formed with the hook groove was described with reference to FIGS. 1 to 3. When the hanger integrated can is used as a case of an electrode body or a component material of an electronic product, a method of excluding a conductive property of the can is required. Anodizing method can be easily performed in this way. The anodizing method is easy when the main material of the can is aluminum (Al), and when the can is made of another metal material, it is easy to use the coating treatment.

First, the anodizing method is a method in which a strong electric field is applied to the surface of a can, and aluminum ions are decomposed with generated oxygen by the electric field to form an aluminum oxide film. To this end, the film growth process to thicken the film produced by the film production process, the sealing process to prevent the contamination of the produced film and to maintain the characteristics (Sealing) process. The film produced in this way not only has a beautiful appearance and gloss but also can be dyed to improve the design quality of the product. In addition, the resulting film has a large electrical resistance to exhibit excellent insulating properties, the hardness is increased, the wear resistance is excellent, and also has a strong corrosion resistance. This can prevent the peeling of the film, etc. generated when using the film as the exterior material of the can, it is possible to add to the can excellent insulation properties, abrasion resistance, and corrosion resistance significantly thinner than the film thickness.

However, this method of anodizing is easy to use for aluminum-based metals, and cans using other metal materials require different methods. To this end, the present invention proposes a coating treatment method as an exterior treatment method of the can together with anodization. Painting is literally a method of painting the exterior of a can using a spray or a brush. Alternatively, it is possible to paint the exterior of the can by inserting the can into the paint for a predetermined time. This coating process is advantageous for painting a desired part, and it becomes easy to describe various colors of painting and desired information. In addition, when painting the exterior of the can using a spray or the like, it is possible to expect the same or better effect with a thinner thickness than the film as in the anodization described above.

In FIG. 4, the anodized portion 17 is shown as hatched. As shown in FIG. 4, it is possible to increase the insulation, corrosion resistance, and abrasion resistance by anodizing all the exteriors of the can 13 as well as a limited area around the hook groove 15.

Anodizing or painting is proposed as a method of replacing the conventional film, and when the anodizing or painting level is not required, it is possible to package the exterior of the can using the film as in the prior art. The selection of such a method is preferably made in consideration of the use purpose of the can, the use environment, and manufacturing cost.

Figure 5 is a perspective view of a secondary battery using a hanger integrated can according to the present invention.

Referring to FIG. 5, the secondary battery using the hanger integrated can according to the present invention includes an electrode assembly 51 having a positive electrode 55 and a lead terminal (or electrode tab) of the negative electrode 53, one side of which is opened, and an electrode assembly. A cavity 49 for accommodating the 51 and a can 57 having a hook groove 59 formed in at least one outer surface thereof and a cap assembly 29 coupled to the opening of the can 57.

As described above with reference to FIGS. 1 to 4, the can 57 has at least one outer surface of the can 57 with a hook groove 59 so that the user can easily separate the secondary battery from the device to which the secondary battery is attached. Is formed. In FIG. 5, the position of the hook groove 59 is formed in the bottom (or bottom) of the can 57 as in FIG. 1, but the position of the hook groove 59, such as the side and bottom, according to the design of the device. It is possible to change variously. The depth of the hook groove 59 is preferably to have a depth in the range of 20% to 50% of the thickness of the can 57 as described with reference to FIG. 2, but considering the material, pressure resistance, and other characteristics of the can 57. It is preferable to select appropriately from a value of about 50%. In addition, the shape of the hook groove 59 can be formed in various ways as shown in the examples shown in Figures 3a to 3e, in addition to any shape if it can be easily used by the user, such as irregularities, sawtooth type You may apply. The can 57 is a rectangular secondary battery having a rectangular parallelepiped cavity 49 as shown in FIG. 5, and manufactured by a deep drawing method. The can 57 accommodates the electrode assembly 51 in the cavity 49 and is coupled with the cap assembly 29 and the insulating case 43 through the opened portion. The material of the can 57 is preferably an aluminum (Al) alloy having excellent mechanical properties such as heat resistance, abrasion resistance, and electrical conductivity. However, the material may vary depending on the intended use. In addition, the can 57 may be in electrical contact with the positive electrode terminal 55 to be used as a positive electrode instead of the positive electrode terminal 55.

In addition, the outer surface of the can 57 may be insulated by anodizing, painting, and attaching an insulating film, and an exterior film or an insulating film may be added to an anodized or painted surface to improve information transfer and design improvement. Can be done. This will be described later with reference to FIG. 6.

The electrode assembly 51 is formed of a wide plate or metal foil in the form of a positive electrode and a negative electrode in order to increase capacitance, and a separator is inserted between the positive electrode and the negative electrode to be laminated and wound in a vortex to form a 'jelly roll'. Form in the form.

The positive electrode and the negative electrode are manufactured by coating and drying a slurry on aluminum metal foil and copper metal foil, respectively. At this time, the slurry is composed of an active material of each of the positive electrode and the negative electrode and a fixing agent to adhere the active material to the metal foil. Lithium-containing oxides are mainly used as the positive electrode active material, and carbon materials such as hard carbon, soft carbon, or graphite are mainly used as the negative electrode active material.

The separator is disposed between the positive and negative electrodes to insulate the positive and negative electrodes. The separator also provides a passage for ion transport between the anode and the cathode. To this end, the separator uses porous polyethylene, polypropylene, or a copolymer of polyethylene and polypropylene. It is advantageous to form such a separator larger than the width of the positive electrode and the negative electrode to prevent the short circuit of the positive electrode and the negative electrode.

In the electrode assembly 51, the positive electrode terminal 55 and the negative electrode terminal 53 connected to each of the positive electrode and the negative electrode are drawn out. The positive electrode terminal 55 and the negative electrode terminal 53 are used as conductive paths with external circuits or devices, and prevent short circuits between the electrode plates at portions where the terminals 55 and 53 are drawn out of the electrode assembly 51. It is insulated by an insulating material such as insulating tape 61 for that purpose.

The cap assembly 29 includes a cap plate 23, an electrode terminal 21, an insulating plate 25, and a terminal plate 27.

The cap plate 23 is formed with a terminal through hole 23 and an electrolyte injection hole 35. In the terminal through-hole 23, the electrode terminal 21 penetrates through the gasket 31 for insulation and is connected to the negative electrode terminal 53. The cap plate 23 is electrically connected to the anode terminal 55 drawn out through the lead-through hole 39 of the insulating case 43. The electrolyte injection hole 35 is used as a passage for injecting the electrolyte into the can, and is sealed after the electrolyte is injected. Here, the electrode connected to the electrode terminal 21 and the electrode connected to the cap plate 23 may be made in reverse as described above.

In addition, the secondary battery may further include an insulating case 43. The insulating case 43 is coupled to the top of the can 57 and the electrode assembly 51 at one side, and is seated on the cap assembly 21 at the other side. In addition, a lead through hole 39 through which the positive electrode terminal 55 and the negative electrode terminal 53 pass is formed in the insulating case 43.

6 is a perspective view illustrating an example of a secondary battery obtained by painting or anodizing a sheath of a can.

When the electrode assembly is accommodated in the can and the cap assembly 101 and the can 100 are assembled, the electrode assembly takes the form as shown in FIG. 6. In this case, the can 100 of the secondary battery may be electrically contacted with the positive terminal of the electrode assembly to use the can 100 itself as a positive electrode. However, when the entire surface of the can 100 is used as a positive electrode, the secondary battery or a device to which the secondary battery is connected may be damaged due to an electric leakage or short circuit, so that insulation is maintained except for the part used as the positive electrode to prevent this. Should be. 6 illustrates an example in which two can terminals 103, in which the hook groove 103 is used as a positive electrode, are formed at the bottom of the secondary battery. As described above, in the case of anodizing or painting, it is possible to easily form the can terminal 103 by using a method such as lift-off of the semiconductor process. That is, when the foreign matter is attached to the position where the can terminal 103 is to be formed, and the foreign matter is removed after the coating or anodizing is performed, only the portion except for the portion to which the foreign matter is attached is performed. Since the can terminal 103 can be formed anywhere outside the can 100, the degree of freedom in designing the electronic device in which the secondary battery is mounted can be greatly increased. In this case, it may be difficult to adopt a protection circuit of the secondary battery, but this can be easily solved by adding a protection circuit to an electronic device to which the secondary battery is attached.

In addition, in the case of the can 57 used in the secondary battery, there is a need for a method for conveying precautions, usage information, manufacturer, serial number, and the like of the secondary battery, and to enhance the appearance of the secondary battery. For this purpose, it can be used by directly printing on the anodized or painted surface or after printing on the insulating film. In addition, the label film (or the outer film) may be separately attached to the outer surface of the can 57 after anodizing, painting, or attaching the insulating film. In this case, since the outer surface of the anodized can 57 is changed to a gray color close to black, the label film may be made dark gray to provide uniformity of appearance design. In addition, the coating color of the coated can 57 can be used to give the uniformity of the design and increase the visibility of the product by using a color corresponding to the color of the label film.

7 is an exploded perspective view schematically illustrating a protection circuit module attached to a secondary battery using a hanger integrated can.

Referring to FIG. 7, there is illustrated a secondary battery, that is, a bare cell 110, in which an electrode assembly is accommodated in a hanger integrated can and a cap assembly is coupled. In FIG. 7, an example of the position of the hook groove 112 is formed on the side surface of the bare cell 110. One side of the bare cell 110 is exposed the electrode terminal 116 connected to the negative terminal of the electrode assembly and the cap plate 114 connected to the positive terminal.

The protection circuit board 124 has a circuit formed on a panel made of resin, and the anode connection terminal 126 and the cathode connection terminal 128 are attached to one surface thereof. In the circuit formed on the protection circuit board, a protection circuit for protecting the battery from overcharge overdischarge due to charge and discharge is formed.

Connection leads 122 and 118 and an insulating plate 120 are disposed between the bare cell 110 and the protection circuit board 124. The connection leads 118 and 122 use a metal such as nickel, and are formed in an 'L' shape or a flat structure for electrical connection with the cap plate 114 and the anode / cathode connection terminals 126 and 128. . The connection leads 118 and 122 are coupled to the connection terminals 126 and 128 and the electrode terminal 116 / cap plate 114 by an attachment method such as resistance spot welding.

As described above, the hook-home integrated can and the secondary battery using the same according to the present invention can be detachably attached to an electronic product using the can itself without a separate cover member.

Hanging groove integrated can and the secondary battery using the same according to the present invention can reduce the production cost by coating or anodizing the exterior of the hanging groove integrated can, the design improvement, the insulation, the information substrate and the process simplification.

Hanger integrated can and the secondary battery using the same according to the present invention by presenting the depth and position of the hook groove formed when the can and the secondary battery using the same, to prevent damage to the can and the secondary battery according to the adoption of the hook groove in advance It is possible to provide improved performance.

Finally, the hook groove integrated can and the secondary battery using the same according to the present invention omit a separate cover member for fixing, thereby increasing the charging capacity of the secondary battery by the space of the conventional cover member and the adhesive member for bonding the cover member. It provides the advantages.

As described above, the present invention has been described with reference to the illustrated embodiments, which are merely exemplary, and various modifications and equivalent other embodiments of the present invention may be made by those skilled in the art. It will be understood that it can be encompassed.

Claims (21)

In a can formed in a rectangular parallelepiped having one side open and a cavity therein, Hanging groove-integrated can, characterized in that the hook groove is formed in at least one of the outer surface of the can. The method of claim 1, Hanging groove-integrated can, characterized in that the outer surface of the can is anodized (Anodizing). The method of claim 1, Hanging groove-integrated can, characterized in that the outer surface of the can is painted for insulation. The method of claim 1, Hanging groove-integrated can, characterized in that the insulating film is attached to the outer surface of the can. The method according to any one of claims 2 to 4, The hook groove, Hanging groove-integrated cans, characterized in that formed on the bottom of the outer surface of the can. The method of claim 5, wherein Hanger groove integral can, characterized in that the depth of the hanger groove is 10% to 50% of the can thickness. The method of claim 5, wherein Hanger groove integral can, characterized in that the depth of the hook groove is 0.1mm to 0.5mm. The method of claim 6, The hook groove, Hanging groove-integrated cans, characterized in that formed in the form of any one of a rectangular, oval, slit (slit), the opening polygon and the opening oval. The method of claim 6, The outer surface of the can is attached to the outer film for the external treatment, Hanging groove-integrated can, characterized in that the outer color of the can is the paint process index corresponding to the outer film color. The method of claim 9, The can is a one-piece groove cans, characterized in that for receiving a charge filled with electricity in the cavity. An electrode assembly having lead terminals of the positive electrode and the negative electrode; A can of a rectangular parallelepiped shape having one side open and a cavity formed to receive the electrode assembly; A cap assembly coupled to the opening of the can, The can is a secondary battery using a hook groove integrated can, characterized in that the hook groove is formed on at least one of the outer surface. The method of claim 11, The outer surface of the can is a secondary battery using a hanger integrated can, characterized in that the anodizing (Anodizing). The method of claim 11, The outer surface of the can is a secondary battery using a hook groove integrated can, characterized in that the coating treatment for insulation. The method of claim 13, The outer surface of the can is attached to the outer film for the external treatment, The secondary battery using the hanger-integrated can, characterized in that the outer color of the can being coated is an index corresponding to the outer film color. The method according to claim 12 or 14, wherein The hook groove, Hanging groove-integrated cans, characterized in that formed on the bottom of the outer surface of the can. The method of claim 15, The depth of the hook groove is a secondary battery using a hook groove integrated can, characterized in that 10% to 50% of the can thickness. The method of claim 16, Hanger groove integral can, characterized in that the depth of the hook groove is 0.1mm to 0.5mm. The method of claim 15, The hook groove, Rectangle, oval, slit (Slit), secondary battery using a hanger integrated can, characterized in that formed in the form of any one of the opening polygon. The method of claim 18, The positive terminal is connected to the can, The can is a secondary battery using a canopy-integrated can, characterized in that the can is provided with the anodized or unpainted can terminal portion to use the can as a positive electrode terminal. The method of claim 19, Hanging groove-integrated can, characterized in that the insulating film is attached to the outer surface of the can. The method of claim 20, The secondary battery, And a protective circuit module electrically coupled to the lead terminal, the protective circuit module having a circuit for maintaining stability of the electrode assembly.

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