CN101162768A - Battery - Google Patents

Abstract

The present invention discloses a battery set which can be conveniently unloaded from the outer electronic device by forming a handle part at the outer cover. The battery set of the invention includes a core component and an outer cover, the core component includes a bare battery and a circuit accessory which is electrically connected to the upper side of the bare battery and the exposed exterior terminal; the outer cover is formed at the lower side or two sides of the core component, wherein, the outer cover is formed with at least one handle part. According to the invention if the battery is charged with a single charger or the battery set is replaced with another battery set, the battery set can be conveniently unloaded from the outer electronic device by pulling the handle part with finger of the user and simultaneously exerting small force to the handle part of the battery set.

Description

Battery

technical field

The present invention relates to a battery pack, and more particularly, to a battery pack that can be easily separated from an external electronic device by forming a handle portion on an external cover.

This application claims priority from Korean Patent Application No. 10-2006-0098538 filed on October 10, 2006, the entire contents of which are hereby incorporated by reference.

Background technique

In general, a secondary battery can be charged and discharged unlike a primary battery, which is formed in the form of a battery pack. Secondary batteries are widely used as power sources for mobile electronic devices, for example, for cellular phones, notebook computers, personal digital assistants (PDAs), and video cameras.

Lithium secondary batteries, in particular, are very suitable for the field of mobile electronic devices due to their high operating voltage and high energy density per unit weight.

A conventional lithium secondary battery pack includes a bare cell and a built-in casing. The bare cell has an electrode assembly wound by a positive electrode plate, a negative electrode plate, and a separator between the positive electrode plate and the negative electrode plate. The built-in type The case seals the electrode assembly while exposing the positive and negative terminals. The battery pack is completed by sealing the outer surface of the bare cell with an outer case in a state where a safety device such as a protection circuit is mounted on the outer surface of the bare cell. The battery pack thus completed is mounted on a portable external electronic device used as a mobile phone.

Such battery packs used in portable external electronic devices can be classified into two types, an external type mounted outside the electronic device and a built-in type mounted inside the electronic device. As batteries become smaller and battery capacities become larger, built-in type batteries (hereinafter referred to as "internal type batteries") are becoming more and more popular due to the possibility of battery explosion. In addition, due to the rise in battery prices, there is an increasing demand for a common battery for various electronic devices or electronic devices of the same type, and inner pack batteries are used more frequently.

A conventional internal type battery pack consists of a bare cell that can be charged and discharged, a printed circuit board that controls charging and discharging, and the printed circuit board is fixed by using a thermal fusion method that injects a hot-melt resin into the space between the bare cell and the printed circuit board A resin molded portion onto the bare cell, and an outer cover formed at a portion exempting the upper side where the printed circuit board is located. In addition, the conventional internal type battery pack mounts the bare cell and the printed circuit board in a separate injection-molded case, thereby fixing the printed circuit board to the bare cell.

Such an internal type battery pack for supplying power to an external electronic device can be incorporated into or detached from a mounting portion formed in the external electronic device. The internal type battery pack can be easily attached to the mounting portion of the external electronic device. However, since the internal type battery pack is closely fixedly connected to the mounting portion of the external electronic device, it is necessary to use a sharp tool or use a It's inconvenient to take it out with a lot of effort with your fingers. Thus, it takes a lot of time to separate the internal type battery pack from the external electronic devices. Therefore, users feel that it is very inconvenient to use such an external electronic device equipped with an internal type battery pack.

Contents of the invention

In order to solve the problems, an object of the present invention is to provide a battery pack which can be easily separated from an external electronic device by forming a handle portion on an outer cover.

According to an embodiment of the present invention, a battery pack provided includes a core pack (core pack) and an outer cover, the core pack includes a bare cell and a circuit accessory, and the circuit accessory is electrically connected to the upper side of the bare cell and the exposed external terminal portion, An outer cover is formed on the lower side or both sides of the core assembly, wherein at least one handle portion is formed on the outer cover.

The handle is either an embossed projection or an engraved groove.

The two sides correspond to a pair of short sides among a pair of long sides and a pair of short sides forming side portions of the bare cell and face each other.

The outer cover includes a first cover and a second cover, the first cover passing through a first plane having a shape corresponding to one side of the bare cell and a first edge side (skirt) extending in a direction from at least a part of an edge of the first plane. side) coupled to one side of the bare cell; the second cover is coupled through a second plane having a shape corresponding to the other side of the bare cell and a second edge side extending in a direction from at least a part of the edge of the second plane. Connect to the other side of the bare cell.

The first edge side is formed in a "ㄈ" shape from the first plane at a portion other than the upper side of the bare cell, and the second edge side is formed in a "ㄈ" shape from the second plane at a portion other than the upper side of the bare cell. "shape.

A handle portion is formed in at least one of the outer underside of the first and second planes of the outer cover.

The convex portion of the embossment protrudes integrally from at least one of two edges facing each other of the edge where the second plane and the second edge side meet.

The convex part of the embossing protrudes in the form of a semicircle or a polygon.

The plane shape of the carved groove part is ellipse, circle, or semicircle.

The electrode terminal protrudes at one of the pair of short sides.

The battery pack also includes label paper attached to the pair of long sides and the underside of the bare cell.

The circuit accessory includes: a printed circuit board having an external terminal portion provided on the upper side of the bare cell and electrically connected to the bare cell; a resin molded portion formed on the upper side of the bare cell including the printed circuit board while exposing the external terminal portion .

Description of drawings

These and/or other objects and advantages of the present invention will be clearer and easier to understand from the following description of some preferred embodiments in conjunction with the accompanying drawings. In the attached picture:

1 is a perspective view of a battery pack according to an embodiment of the present invention;

Figure 2 is an exploded perspective view of the battery pack shown in Figure 1;

3 is a perspective view of a bare cell of the battery pack shown in FIG. 1;

FIG. 4 is an enlarged perspective view of portion "A" of the battery pack shown in FIG. 1;

FIG. 5 is a perspective view showing a situation in which the battery pack shown in FIG. 1 is mounted on an external electronic device;

6 is a partial plan view of a portion of the battery pack mounted on an external electronic device shown in FIG. 5 viewed from above;

7 is a plan view of the battery pack installed on the external electronic device viewed from the direction of the arrow shown in FIG. 5;

8 is a perspective view of a battery pack according to another embodiment of the present invention;

FIG. 9 is an enlarged perspective view of portion "B" of the battery pack shown in FIG. 8;

Fig. 10 is a partial plan view showing a part of the battery pack mounted on the external electronic device shown in Fig. 10 viewed from above;

FIG. 11 is a partial plan view from above showing a part of the battery pack shown in FIG. 10 mounted on an external electronic device;

FIG. 12 is a plan view showing the battery pack shown in FIG. 10 mounted to the external electronic device, viewed from the direction of the arrow.

Detailed ways

Some preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

1 is a perspective view of a battery pack according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of the battery pack shown in FIG. 1 , and FIG. 3 is a perspective view of a bare cell of the battery pack shown in FIG. 1 .

1 and 2, a battery pack 400 according to an embodiment of the present invention includes a core assembly, an outer cover, a handle portion 350, and a label paper 370. Connected circuit accessories; the outer cover includes a first cover 320 and a second cover 340 formed on both sides of the core assembly; the handle portion 350 is formed on the lower side of the second cover 340; the label paper 370 is attached to the lower side of the core assembly and the other two side.

As shown in FIG. 3 , the bare cell 100 includes an electrode assembly 12 composed of a positive plate 13, a negative plate 15, a separator 14, and an electrolyte (not shown) in a can 20, and the upper part of the can 20 is sealed by a cap assembly 30. Opening 20a.

The electrode assembly 12 is formed by winding a positive electrode plate 13 , a negative electrode plate 15 , and a separator 14 placed between the positive electrode plate 13 and the negative electrode plate 15 facing each other. A positive electrode web 16 is provided on the positive electrode plate 13 and a negative electrode web 17 is provided on the negative electrode plate 15 . The separator 14 insulates the positive electrode plate 13 and the negative electrode plate 15, and the separator is formed of a porous film so that an electrolyte can flow therethrough.

The cover assembly 30 includes a cover plate 33 , an insulating plate 36 , a terminal plate 39 , and electrode terminals 31 . The tubular gasket 32 is inserted between the cover plate 33 and the electrode terminal 31 , and the electrode terminal 31 and the terminal block 39 are electrically connected. The insulating plate 36 electrically insulates the cover plate 33 from the terminal plate 39 . An electrolyte injection hole 35 is formed on one side of the cap plate 33 . In order to seal the electrolyte injection hole 35 after injecting electrolyte, a plug (not shown) is installed on the electrolyte injection hole 35 .

The can 20 includes a pair of long sides 22, a pair of short sides 23 and a bottom side 20b, which form a box shape. The upper side is opened and forms an upper opening 20a. Such an upper opening 20a is a portion where the electrode assembly 12 is inserted. The upper side of the can 20 is sealed by the cap plate 33 of the cap assembly 30, whereby leakage of the electrolyte can be prevented. Tank 20 is made of metal, preferably lightweight ductile aluminum or an aluminum alloy. Here, there is a limit to the material of the tank. The can 20 is preferably formed by a deep drawing method. The long side 22, the short side 23 and the bottom side 20b are integrally formed. Such a can 20 itself may serve as a terminal having a polarity opposite to that of the electrode terminal 31 protrudingly formed on the cover plate 33 . In the present invention, the can 20 and the cover plate 33 coupled to the can 20 by welding have positive polarity, and the electrode terminal 31 has negative polarity. The polarities of each of the cap plate 33 and the electrode terminal 31 may be different according to some embodiments.

In addition, an insulating case 40 is installed on the upper side of the electrode assembly 12 for electrical insulation between the electrode assembly 12 and the cap assembly 30 while also serving to cover the upper side of the electrode assembly 12 . The insulating case 40 is made of polymer resin, preferably polypropylene. The hole 42 for the negative tab is formed on one side so that the negative tab 17 can pass through the electrode assembly 12, while the hole 41 for the positive tab is formed on the other side, that is, its position is the same as that of the positive tab. The tabs 16 correspond accordingly. The electrolyte inflow hole 43 may not necessarily be formed separately.

As shown in FIG. 2 , the shape of the bare cell 100 composed of the above elements is formed by an upper side 121 , a pair of short sides 122 , a pair of long sides 123 and a bottom side 124 . In the present invention, the short side 122 refers to a narrower portion of the side of the bare cell 100 , and the long side 123 refers to a wide portion of the side of the bare cell 100 .

1 and 2, the circuit accessory 200 exposing the external terminal portion 220 is arranged on the upper side of the bare cell 100, and the circuit accessory 200 is electrically connected to the bare cell 100 through a negative electrode lead plate 254 and a positive electrode lead plate 255.

The circuit accessory 200 includes a printed circuit board 210 with an external terminal portion 220 arranged on the upper side 121 of the bare cell 100, which is electrically connected to the bare cell 100, and a resin molded portion 290. is formed in an upper region of the bare cell 100 including the printed circuit board 210 while exposing the external terminal portion 220 .

The printed circuit board 210 is a plate-shaped member made of resin, and the external terminal portion 220 is mounted on the upper side so as to be electrically connected to an external electronic device (not shown). In addition, a circuit (not shown) that makes the state of charge uniform by controlling charging and discharging of the battery or a protection circuit (not shown) such as preventing overcharging and overdischarging is formed on the lower side of the printed circuit board 210 . Reference numeral 212 collectively denotes circuit elements (not shown) of a circuit (not shown) for realizing charging and discharging and a protection circuit (not shown), such as FETs and IC chips.

In addition, a negative electrode connection terminal 213 and a positive electrode connection terminal 214 are provided on the lower side of the printed circuit board 210 . In order to electrically connect each of the negative electrode connection terminal 213 and the positive electrode connection terminal 214 on the printed circuit board 210 to the electrode terminal 31 protruding from one short side 122a of the bare cell 100 and to the other short side 122b of the bare cell 100, respectively , the other short side 122b has a polarity opposite to that of the electrode terminal 31, and the negative electrode is provided between the negative electrode connection terminal 213 of the printed circuit board 210 and the electrode terminal 31 protruding from the one short side 122a of the bare cell 100. guide plate 254, and a positive electrode guide plate 255 is provided between the positive electrode connection terminal 214 of the printed circuit board 210 and the other short side 122b of the bare cell. Likewise, each of the negative electrode connection terminal 213 and the positive electrode connection terminal 214 of the printed circuit board 210 is connected to the electrode terminal 31 protruding from one short side 122a of the bare cell 100 and the other short side through the negative electrode lead plate 254 and the positive electrode lead plate 255, respectively. Side 122b is connected. In this way, the printed circuit board 210 is electrically connected to the bare cell 100 .

Each of the negative electrode guide plate 254 and the positive electrode guide plate 255 is formed in a “” shape with a length of from each electrode terminal 31 and the other short side 122b of the bare cell 100 through both end portions 126 of the upper side 121 of the bare cell 100. , 127 to the lengths measured from each of the negative electrode connection terminal 213 and the positive electrode connection terminal 214. In the present invention, the printed circuit board 210 is coupled to the upper side 121 of the bare cell 100 through the negative electrode lead plate 254 and the positive electrode lead plate 255 . Because it is more advantageous to make the battery thinner by coupling the printed circuit board 210 to the narrow upper side 121 than to the wide long side 123a.

Such a negative electrode lead plate 254 and a positive electrode lead plate 255 may be made of a conductive material such as nickel. In addition, an adhesive insulating tape 260 is installed between the negative electrode guide plate 254 connected to the electrode terminal 31 from the upper side of the one short side 122a of the bare cell 100 and the one short side 122a. The insulating tape 260 is installed to prevent an electrical short between the negative electrode lead plate 254 having a negative polarity and the one short side 122a having a positive polarity. In addition, in order to directly weld the positive electrode guide plate 255 to the other short side 122 b of the bare cell 100 , a conductive plate 270 may be coupled in advance by welding or other methods. The conductive plate 270 is installed because the other short side 122b of the bare cell 100 made of aluminum and the positive electrode guide plate 255 made of nickel are not easily ultrasonically welded due to the insolubility of nickel, and due to the high conductivity of aluminum, the use of Resistance welding is also difficult, so laser welding is used, but the laser beam can be directed to the printed circuit board 210, thereby reducing reliability.

In addition, a current breaking element 240 such as a positive temperature coefficient (PTC) element or a heat sink may be provided between the negative electrode guide plate 254 at one side of the upper side 121 of the bare cell 100 and the negative electrode connection terminal 213. Automatic switching of relays. When high temperature or voltage rise occurs inside the battery due to overcharging or other reasons, such a current breaking element 240 can cut off the current, thereby preventing the battery from igniting and exploding.

Also, in order to prevent an electrical short due to unnecessary connection between the printed circuit board 210 and the bare cell 100 , an insulating sheet 250 may be installed on the upper side 121 of the bare cell 100 .

The resin molded part 290 is formed by molding resin in the upper region of the bare cell 100 including the printed circuit board 210 , that is, the gap between the upper side 121 of the bare cell 100 and the printed circuit board 210 , so that the printed circuit board 210 fixed to the bare cell 100. Here, the external terminal part 220 mounted on the printed circuit board 210 is molded of resin and may be exposed. In the present invention, the resin molding part 290 molds resin into the gap between the upper side 121 of the bare cell 100 and the printed circuit board 210, thereby forming the circuit accessory 200 having the printed circuit board 210, and the circuit accessory 200 A printed circuit board and pre-injection molded product may be included to cover the printed circuit board attached to the bare cell.

When the printed circuit board 210 is coupled with the upper side 121 of the bare cell 100 through the negative electrode lead plate 254 and the positive electrode lead plate 255, in each of one short side 122a and the other short side 122b of the bare cell 100, the negative electrode lead plate 254 And a part of the positive electrode lead plate 255 is exposed to the outside.

In addition, an outer cover including the first cover 320 and the second cover 340 is coupled with a pair of short sides 122 of a pair of long sides 123 and a pair of short sides 122 forming side portions of the bare cell 100 and facing each other. In this way, the outer cover including the first cover 320 and the second cover 340 forms the outline of the battery pack by covering the one short side 122a and the other short side 122b of the bare cell 100 exposing the negative electrode guide plate 254 and the positive electrode guide plate 255, respectively. part.

The first cover 320 forming the outer cover includes a first plane 322 having a shape corresponding to the one short side 122a of the bare cell 100 and extends in one direction from at least a portion of an edge of the first plane 322 to cover one short side of the bare cell 100 . The first edge side 324 of 122a.

The second cover 340 includes a second plane 342 having a shape corresponding to the other short side 122b of the bare cell 100 and a second plane 342 extending in one direction from at least a part of the edge of the second plane 342 so as to cover the other short side 122b of the bare cell 100 . Second edge side 344 .

In the present invention, the first edge side 324 extends from the first plane 322 toward the direction of the pair of long sides 123 and the lower side 124 of the bare cell 100, so that the part other than the upper side of the bare cell 100 forms a "ㄈ" shape, However, the edge sides 324 can only extend toward the pair of long sides 123 of the bare cell 100 . Similarly, the second edge side 344 extends from the second plane 342 toward the direction of the pair of long sides 123 and the lower side 124 of the bare cell 100, so that the part other than the upper side of the bare cell 100 forms a "ㄈ" shape, but the second The edge sides 344 can only extend to the pair of long sides 123 of the bare cell 100 .

The first cover 320 and the second cover 340 may be pre-formed by injection molding, and then may be joined to one short side 122a and the other short side 122b of the bare cell 100 by a double-sided tape (not shown). In this case, the resin molded part 290 of the circuit accessory 200 may be molded after the first cover 320 and the second cover 340 are assembled to the one short side 122 a and the other short side 122 b of the bare cell 100 . In addition, in the case where the first cover 320 and the second cover 340 are not formed by pre-injection molding, the first cover 320 and the second cover 340 may be formed when the resin molded part 290 is molded by a resin molding method. It is integrally molded with the resin molded portion 290 .

The handle part 350 may be integrally formed in at least one of the first cover 320 and the second cover 340 , for example, formed on an outer lower side of the second cover 340 , that is, a lower side of the second plane 342 . The handle portion 350 will be described in detail below.

In addition, in a state where the first cover 320 and the second cover 340 are coupled to each of the one short side 122a and the other short side 122b, the label paper 370 can be bonded to the pair of long sides 123 and the lower side of the bare cell 100. on side 124. The label paper 370 not only enhances the solidarity between the first cover 320 and the second cover 340, but also enhances the external solidarity between the first cover 320, the second cover 340 and the bare cell 100. )sex.

The battery pack 400 can be completed by the above structure. Such a battery pack 400 is installed inside an external electronic device as an internal type battery pack to protect it from external impact.

Hereinafter, the handle part 350 and the operation of attaching and detaching the battery pack 400 having the handle 350 to and from the external electronic device will be described in detail with reference to FIGS. 4 to 7 .

Fig. 4 is the enlarged perspective view of "A" part of the battery pack shown in Fig. 1, the perspective view of Fig. 5 shows the situation that the battery pack shown in Fig. 5 is a partial plan view of a part of the battery pack mounted on an external electronic device viewed from above, and FIG. 7 is a plan view of the battery pack mounted on an external electronic device viewed from the direction of the arrow shown in FIG. 5 .

As shown in FIG. 4 , the handle portion 350 of a battery pack 400 according to an exemplary embodiment of the present invention includes edges that face each other from the second plane 342 and the second edge side 344 where the outer bottom side of the second plane 342 meets. An integrally raised embossed raised portion at at least one edge of the

As shown in FIG. 5, the battery pack 400 with the handle portion 350 formed as an embossed protruding portion is mounted on the mounting portion 520 of an external electronic device 500 such as a mobile phone by the external electronic device. Housing 540 of 500 is sealed.

The handle portion 350 formed as an embossed convex portion is a portion pulled by a user's finger when detaching the battery pack 400 mounted on the mounting portion 520 on the external electronic device 500 from the external electronic device 500 . The battery pack 400 can be easily detached from the mounting portion 520 of the external electronic device 500 when the user applies a little force to the outside while holding the handle portion 350 of the battery pack 400 with his fingers. Accordingly, when charging the battery pack 400 mounted on the mounting portion 520 of the external electronic device 500 through an external charger or replacing the battery pack with another battery pack, the user can easily use the handle portion 350 to remove the battery pack from the outside. The battery pack 400 is removed from the electronic device 500 .

Here, the handle part 350 may be formed on the outer lower side of the second plane 342 because the principle of leverage is utilized. In other words, forming the handle portion 350 at the lower side of the second plane 342 requires less force to detach the battery pack 400 from the external electronic device 500 than forming the handle portion 350 at the middle of the second plane 342. . The handle portion 350 can be formed as a semicircular embossed protruding part, and of course a polygonal embossed protruding part can also be selected, for example, a quadrangular embossed protruding part. In other words, since the handle part 350 may be formed in a protrusion shape that is pulled by a user's finger, there is no limitation on the protrusion shape of the handle 350 .

As shown in FIG. 6 , in order to mount the battery pack 400 having the handle portion 350 formed as an embossed convex portion protruding outward into the mounting portion 520 of the external electronic device 500 , the external electronic device 500 should be formed with a groove 525 The size of the groove is the same as the corresponding size of the handle part 350 where the handle part 350 can be fitted inside the mounting part 520 and where the embossed protrusion is formed. In addition, as shown in FIG. 7 , the height of the mounting portion 520 of the external electronic device 500 should be at such a level that a part of the handle portion 350 of the battery pack 400 can be exposed from the mounting portion 520 . This is because when at least a portion of the handle portion 350 of the battery pack 400 mounted on the mounting portion 520 of the external electronic device 500 is exposed, the user may pull his finger on the handle portion 350 .

In the present invention, the handle portion 350 is made to protrude from all edges facing each other where the second plane 342 and the second edge side 344 meet, and the purpose of the protrusion is that even if it is mounted to the mounting portion 520 of the external electronic device 500 with The orientation of the battery pack 400 of the handle part 350 is different, and a part of the handle part 350 of the battery pack 400 may still be exposed on the upper side of the mounting part 520 of the external electronic device 500 . That is, the user's fingers can pull the handle portion 350 of the battery pack 400 .

Fig. 8 is a perspective view of a battery pack according to another embodiment of the present invention, Fig. 9 is an enlarged perspective view of part "B" of the battery pack shown in Fig. 8, and Fig. 10 is a partial plan view showing Referring to a part of the battery pack mounted on an external electronic device shown in FIG. 10 , FIG. 11 is a partial plan view viewed from above, which shows a part of the battery pack mounted on an external electronic device shown in FIG. 10 , FIG. 12 is a plan view showing the battery pack shown in FIG. 10 mounted to the external electronic device, viewed from the direction of the arrow.

The battery pack 900 of another embodiment of the present invention has the same elements as the battery pack of the first embodiment of the present invention except that the structure of the handle portion 850 is a carved groove. Therefore, the same elements as those of the battery pack 400 in the first embodiment of the present invention will not be repeated here. Instead, the description will focus on the handle portion 850 formed with the engraved groove portion, which is different from the handle portion 350 formed with the embossed convex portion of the battery pack 400 of the first embodiment of the present invention.

As shown in FIG. 8 , a battery pack 900 according to another embodiment of the present invention includes: a core component including a bare cell 600 and a circuit accessory 700 arranged on the upper side of the bare cell 600 and electrically connected to the bare cell 600; The outer covers of the first cover 820 and the second cover 840 on both sides; the handle part 850 formed on the lower side of the second cover 840; and the label paper 870 attached to the lower side of the core assembly and the other two sides.

8 and 9, a handle portion 850 of a battery pack 900 according to another embodiment of the present invention is formed on at least one of the first cover 820 and the second cover 840, for example, formed on the outer lower side of the second cover 840, That is, the outer lower side of the second plane 842 .

As shown in FIG. 9 , the handle portion 850 is formed as a notched groove portion at the outer lower side of the second plane 842 .

As shown in FIG. 10 , a battery pack 900 having a handle portion 850 formed as a notched groove portion is attached to a mounting portion 1020 of an external electronic device 1000 such as a mobile phone, and is then used by the external electronic device 1000. Housing 1040 is sealed.

Such a grip portion 850 formed as a notched groove portion is a portion that a user's fingers can hold when detaching the battery pack 900 mounted on the mounting portion 1020 of the external electronic device 1000 from the external electronic device 1000. . In the state where the user's fingers hold the handle portion 850 of the battery pack 900, the user can easily detach the battery pack 900 from the mounting portion 1020 of the external electronic device 1000 by exerting a small force toward the outside. . Accordingly, when using an external charger to charge the battery pack 900 mounted on the mounting portion 1020 of the external electronic device 1000 or to replace the battery pack with another battery pack, the user can quickly and easily use the handle portion 850 to place the battery pack 900 The battery pack 900 is detached from the external electronic device 1000 .

Here, the handle part 850 is formed on the outer lower side of the second plane 842 because it utilizes the principle of leverage. That is, when the handle portion 850 is formed on the lower side of the second plane 842, less force is required to pull the battery pack 900 from Remove from external electronics. In the present invention, the planar shape of the handle portion 850 formed as the carved groove portion is an ellipse, of course, it may also be a circle or a semicircle. Since such a handle portion 850 can be made by any groove that a user's finger can pull, the notch shape of the handle portion is not limited to a certain shape.

Also, the battery pack 900 of another embodiment of the present invention has the handle portion 850 formed as a notched groove portion while the size of the battery pack 900 is not increased, unlike the first embodiment of the present invention, due to the included The handle portion 350 formed as an embossed convex portion increases the size of the battery pack 400 .

In addition, the battery pack 900 according to another embodiment of the present invention includes the handle portion formed as a notched groove portion, which can solve the problem of the battery pack 400 due to external impact such as dropping due to the first embodiment of the present invention. The handle portion 350 formed as an embossed protruding portion in a manner protruding outward in a manner causes a problem that the handle portion 350 is broken.

Furthermore, when the battery pack 900 is mounted on the mounting portion 1020 of the external electronic device 1000, as shown in FIG. A separate structure of the handle portion 850 formed as a carved groove portion. Therefore, the battery pack 900 according to another embodiment of the present invention is more convenient to install.

The battery pack of the present invention includes a core assembly in which circuit accessories are coupled to the upper side of the bare cell; an outer cover comprising a first cover and a second cover formed and coupled to both sides of the core assembly; A handle portion of the exterior underside of at least one of the covers. However, in a case where the battery pack includes a core assembly coupled to an upper side of the bare cell from which electrode terminals protrude, an outer cover may be formed and coupled to the lower side of the core assembly. In this case, the handle portion may be formed on a side where the outer cover is coupled with the lower side of the core assembly.

As described above, the present battery pack includes a handle portion formed with embossed protrusions or carved grooves on the outer cover forming a part of the outer shape and mounted in an external electronic device, so users want to use a separate When the charger charges the battery or replaces the battery pack with another battery pack, the user's fingers can pull the handle part, and at the same time apply a small force to the handle part of the battery pack to easily remove the battery pack from the external electronics. removed from the device.

In addition, since the battery pack according to another embodiment of the present invention has the handle portion of the groove portion carved out instead of the structure protruding from the outside, the size of the battery pack can be minimized, and it is possible to prevent the It happens that the handle part of the battery pack is broken due to the impact, and it is also possible to secure the mounting of the battery pack on the external electronic device.

Although the present invention is illustrated and described in combination with only some shown aspects, it is obvious that those skilled in the art can make some equivalent transformations and modifications to the present invention after reading and understanding this specification and related drawings.

Claims (12)

1. A battery pack comprising: a core assembly including a bare cell and a circuit accessory electrically connected to the upper side of the bare cell and to the exposed external terminal portion; and an outer cover formed on the underside or both sides of the core assembly, Wherein, at least one handle portion is formed on the outer cover. 2. The battery pack of claim 1, wherein the handle portion is an embossed convex portion or a carved groove portion. 3. The battery pack of claim 2, wherein the two sides correspond to a pair of short sides among a pair of long sides and a pair of short sides forming side portions of the bare cell and face each other. 4. The battery pack of claim 3, wherein the outer cover comprises: A first cover that is connected to one side of the bare cell through a first plane having a shape corresponding to one side of the bare cell and a first edge side extending in one direction from at least a portion of an edge of the first plane. side coupling; and The second cover is connected to the bare cell through a second plane having a shape corresponding to the other side of the bare cell and a second edge side extending in one direction from at least a part of an edge of the second plane. The other side is coupled. 5. The battery pack according to claim 4, wherein the first edge side forms a "ㄈ" shape from the first plane at the portion other than the upper side of the bare cell, The second edge side forms a "ㄈ" shape from the second plane at the portion other than the upper side of the bare cell. 6. The battery pack of claim 4, wherein the handle portion is formed on at least one outer lower side of the first and second planes of the outer cover. 7. The battery pack according to claim 6, wherein the embossed protruding portion is at least one of two edges facing each other from an edge where the second plane and the second edge side meet. The overall protrusion. 8. The battery pack according to claim 2 or 6, wherein the embossed protruding parts are semicircular or polygonal protrusions. 9. The battery pack according to claim 2 or 6, wherein the planar shape of the carved groove portion is an ellipse, a circle, or a semicircle. 10. The battery pack according to claim 3, wherein the electrode terminal protrudes at one short side of the pair of short sides. 11. The battery pack of claim 3, further comprising: A label paper is attached to the pair of long sides and the underside of the bare cell. 12. The battery pack of claim 1, wherein the electrical accessory comprises: a printed circuit board having an external terminal portion arranged on the upper side of the bare cell and electrically connected to the bare cell; and A resin molded portion is formed at an upper side of the bare cell including the printed circuit board while exposing the external terminal portion.

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