KR102283789B1 - Belt for accomodating battery - Google Patents

Abstract

A battery-embedded belt according to an embodiment of the present invention includes a plurality of secondary batteries each having a positive electrode terminal and a negative electrode terminal protruding in both directions, electrically connecting positive terminals of the secondary batteries, and a positive electrode welded to the positive terminals. a reinforcement tab, a negative reinforcement tab electrically connecting the negative terminals of the secondary batteries, and welded to the negative terminals, and the positive terminal, the negative terminal and the positive electrode reinforcement tab and the negative electrode of the plurality of secondary batteries and a sheath that seals the tab.

Description

Belt with built-in battery {BELT FOR ACCOMODATING BATTERY}

The present invention relates to a battery-embedded belt.

In recent years, miniaturization of electronic devices is rapidly progressing.

In addition, as the miniaturization of electronic devices progresses, the development of a wearable electronic device that can be worn on the body by making the miniaturized electronic device a wrist watch type or a glasses type is in progress.

When a battery is used as a power source of such an electronic device, it is difficult to secure battery capacity by embedding a plurality of batteries because a space for accommodating the battery inside the electronic device is limited.

For example, Patent Document 1 discloses a technique for securing battery capacity by embedding the battery in a belt.

However, in the technique disclosed in Patent Document 1, since the batteries are connected in a state where the electrode terminals are exposed, there is a possibility that a short circuit occurs when a liquid such as sweat comes into contact with the exposed electrode terminals.

Japanese Laid-Open Patent Publication No. 1999-508997

Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide a novel and improved battery-embedded belt capable of preventing a short circuit at an electrode terminal.

A plurality of secondary batteries each having a positive electrode terminal and a negative electrode terminal protruding in both directions, a positive electrode reinforcement tab for electrically connecting positive terminals of the secondary batteries, and a positive electrode reinforcement tab welded to the positive terminals, and negative terminals of the secondary batteries are electrically connected and a negative reinforcement tab welded to the negative electrode terminals, and an exterior part sealing the positive electrode terminal, the negative electrode terminal, and the positive electrode reinforcement tab and the negative electrode reinforcement tab of the plurality of secondary batteries.

In addition, the positive electrode reinforcing tab may be welded to a surface facing the first direction from the positive electrode terminal, and the negative reinforcing tab may be welded to a surface facing the second direction opposite to the first direction from the negative electrode terminal.

In addition, the positive reinforcing tab and the negative reinforcing tab are formed to extend in the longitudinal direction of the exterior part, and the positive reinforcing tab is welded to a plurality of positive terminals and located on the first surface of the secondary battery, and the negative reinforcing tab is Doedoe welded to the negative terminal of the secondary battery may be positioned on the second surface facing the first surface and the opposite direction.

In addition, the positive reinforcing tab may be formed in plurality and welded to both surfaces of the positive electrode terminal, and the negative reinforcing tab may be formed in plurality and welded to both surfaces of the negative electrode terminal.

In addition, the positive reinforcing tab and the negative reinforcing tab are formed to extend in the longitudinal direction of the exterior part, and the positive reinforcing tab is welded to a plurality of positive terminals and welded to both surfaces of the positive terminals, and the negative reinforcing tab includes a plurality of positive reinforcing tabs. Doedoe welded to the negative terminal may be welded to both sides of the negative terminal.

In addition, the secondary battery may include an electrode group in which a positive electrode, a negative electrode, and a separator are wound, and the positive electrode terminal and the negative electrode terminal may each protrude in the same direction as a winding axis of the electrode group.

In addition, the positive terminal and the negative terminal may each protrude in a direction perpendicular to the winding axis of the electrode group, and the secondary battery may be formed of a polymer battery having a gel electrolyte.

In addition, the plurality of secondary batteries may be electrically connected in parallel by the positive electrode reinforcement tab and the negative electrode reinforcement tab, and the plurality of secondary batteries may be arranged in at least one line or more in the longitudinal direction of the exterior part.

In addition, each of the positive terminal and the negative terminal of one of the plurality of secondary batteries is disposed to face each other with the positive terminal and the negative terminal of another secondary battery of the plurality of secondary batteries adjacent in the longitudinal direction of the exterior part. can

In addition, the positive electrode terminal and the negative electrode terminal may be connected by a hinge structure, and the positive electrode reinforcement tab and the negative electrode reinforcement tab may be installed to cover the hinge structure, and the exterior part is the positive electrode terminal, the negative electrode terminal, and the positive electrode reinforcement tab , and the negative reinforcing tab may be integrally sealed.

In addition, the exterior part may include a laminate film, and the positive electrode reinforcing tab and the negative reinforcing tab may have a curved structure.

In addition, the exterior part may further include a connection part connected to an electronic device at one end of the exterior part in a longitudinal direction, and configured to conduct the plurality of secondary batteries and the electronic device.

In addition, a buckle part for adjusting the length of the external part may be further included on the other side opposite to the one side in the longitudinal direction of the external part, and the positive electrode reinforcing tab and the negative reinforcing tab may be made of a metal containing copper. .

According to the battery-embedded belt according to an aspect of the present invention, it is possible to prevent the electrode terminals from being short-circuited by covering and sealing the positive electrode terminal, the negative electrode terminal and the connection part with an exterior part having water resistance and insulation properties.

In addition, according to the battery-embedded belt according to another aspect of the present invention, it is possible to improve the battery capacity by embedding more of a plurality of secondary batteries.

Further, according to the battery-embedded belt according to another aspect of the present invention, it is possible to improve the usable time of the electronic device connected to the battery-embedded belt.

1 is a schematic plan view of a battery-embedded belt according to an embodiment of the present invention.
FIG. 2A is a perspective view illustrating an electrode group of a secondary battery incorporated in the battery-embedded belt of FIG. 1 .
FIG. 2B is a perspective view illustrating an electrode group different from the electrode group of the secondary battery of FIG. 2A .
FIG. 2C is a perspective view illustrating an electrode group different from the electrode groups of the secondary batteries of FIGS. 2A and 2B .
3 is a schematic diagram schematically showing electrode groups of secondary batteries according to an embodiment of the present invention are combined.
4 is a schematic diagram schematically illustrating that an electrode group is sealed by an exterior part according to an embodiment of the present invention.
5 is a schematic diagram schematically showing a battery-embedded belt according to a first modification of the present invention.
6 is a schematic diagram schematically showing a battery-embedded belt according to a second modification of the present invention.
7 is a schematic diagram schematically illustrating a battery-embedded belt according to a third modified example of the present invention.
8 is a schematic diagram schematically illustrating a first modified example in which electrode groups of secondary batteries embedded in a battery embedded belt are combined according to another embodiment of the present invention.
9 is a schematic diagram schematically illustrating a second modified example in which electrode groups of secondary batteries embedded in a battery embedded belt are combined according to another embodiment of the present invention.
10A is a schematic diagram schematically illustrating a third modified example in which electrode groups of secondary batteries embedded in a battery embedded belt are combined according to another embodiment of the present invention.
10B is a cross-sectional view taken along the X1-X2 direction in FIG. 10A.
11A is a schematic diagram schematically illustrating a fourth modified example in which electrode groups of secondary batteries embedded in a battery embedded belt are combined according to another embodiment of the present invention.
11B is a cross-sectional view taken along the X2-X2 direction in FIG. 11A.
12A is a schematic diagram schematically illustrating a fifth modified example in which electrode groups of secondary batteries embedded in a battery embedded belt are combined according to another embodiment of the present invention.
12B is a cross-sectional view taken along the X3-X3 direction in FIG. 12A.
13A is a schematic diagram schematically illustrating a sixth modified example in which electrode groups of secondary batteries embedded in a battery embedded belt are combined according to another embodiment of the present invention.
13B is a cross-sectional view taken along the X4-X4 direction in FIG. 13A.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily carry out the present invention. However, the present invention may be implemented in several different forms and is not limited to the embodiments described below. And the same reference numerals in the present specification and drawings indicate the same components.

1 is a schematic plan view of a battery-embedded belt according to an embodiment of the present invention.

Referring to FIG. 1 , the battery-embedded belt 1 according to this embodiment includes connection parts 143 and 145 electrically connecting the positive terminals 113A and the negative terminals 115A of the plurality of secondary batteries 11 , and It seals the positive terminal 113A, the negative terminal 115A, and the connection parts 143 and 145 of the plurality of secondary batteries 11 and includes an exterior part 13 having water resistance and insulation properties.

The battery-embedded belt 1 according to an embodiment of the present invention is connected to both ends of the electronic device 21 .

That is, according to the present embodiment, the exterior part 13 may be connected to the electronic device 21 positioned at one end of the exterior part 13 in the longitudinal direction, and the plurality of secondary batteries 11 and the electronic device 21 may be connected to each other. ) may further include a connection to conduct electricity.

The electronic device 21 is mounted on the user's body by the battery-embedded belt 1 .

Here, the electronic device 21 may be mounted on the head, wrist, arm, ankle, waist, or the like.

However, the present invention is not limited to the above example, and the electronic device 21 may be mounted on any body part that can be mounted by winding the battery-embedded belt 1 .

The electronic device 21 and the battery-embedded belt 1 are detachable.

According to this configuration, when all the current built into the battery-embedded belt (1) is discharged and the electronic device (21) becomes unusable, the electronic device (21) can be used by replacing the battery-built-in belt (1). there is.

However, it is also possible to use the electronic device 21 by charging the secondary battery 11 embedded in the battery internal belt 1 without replacing the battery internal belt 1 .

The secondary batteries 11 are embedded in the battery-embedded belt 1 , are arranged in a line in the longitudinal direction of the battery-embedded belt 1 , and are electrically connected to each other to supply power to the electronic device 21 .

Here, the secondary batteries 11 may be connected in parallel to each other in order to increase the battery capacity.

In addition, the secondary batteries 11 may be arranged in at least one line or more in the longitudinal direction of the exterior part 13 inside the battery-embedded belt 1 .

The secondary battery 11 according to the present embodiment may be a lithium ion secondary battery including an electrode group including a positive electrode plate, a negative electrode plate, and a separator, and an electrolyte.

Also, the secondary battery 11 may be a lithium ion secondary battery manufactured by encapsulating an electrode group and an electrolyte in a container of a certain shape.

Accordingly, after the plurality of secondary batteries 11 are electrically connected to each other, they may be sealed in the exterior part 13 and embedded in the battery-embedded belt 1 .

However, the secondary battery 11 is not limited to being manufactured by encapsulating an electrode group and an electrolyte in a container of a certain shape.

That is, the secondary battery 11 according to the present embodiment may be a lithium ion secondary battery manufactured by sealing the electrode group and the electrolyte with the exterior part 13 .

In detail, the electrode group is not sealed with the electrolyte in a container of a certain shape, but after being electrically connected to the other electrode group, the electrolyte is injected immediately before being sealed by the exterior part 13, and then the exterior part 13 is formed. By sealing, the secondary battery 11 can be manufactured.

Here, the exterior part 13 serves as a container of the secondary battery 11 .

In addition, the electrolyte of the secondary battery 11 may be made of a gel-type polymer material.

In addition, when the container of the secondary battery 11 is formed of the exterior part 13 , when the exterior part 13 is damaged, the electrolyte may leak to the outside.

Therefore, if the secondary battery 11 is a gel-type polymer battery in which the electrolyte has lower fluidity, leakage of the electrolyte can be suppressed, so that the safety of the battery-embedded belt 1 can be improved.

The exterior part 13 has water resistance and insulation, and a secondary battery 11 , a positive terminal 113A and a negative terminal 115A of the secondary battery 11 , and a wiring connecting each terminal such as the connection parts 143 and 145 . covered and sealed integrally.

In addition, the exterior part 13 may cover and integrally seal the secondary battery 11 .

In detail, the exterior part 13 may be made of one or more of a coating material having high water resistance and insulation, such as a laminate film, natural rubber, or synthetic rubber.

By sealing the secondary battery 11 with the exterior part 13, the wiring connecting each terminal such as the positive terminal 113A, the negative terminal 115A, and the connection parts 143 and 145 of the secondary battery 11 is insulated from each other and It can be protected from liquids from the outside and the like.

With this configuration, the battery-embedded belt 1 according to an embodiment of the present invention can prevent the electrode terminal and its wiring from being short-circuited even when the battery-embedded belt 1 is exposed to a liquid such as sweat.

On the other hand, the exterior part 13 may be made of a material with high flexibility so that it can be wound around the user's body.

In addition, the exterior part 13 may be separately attached to a known belt material such as leather or metal and then mounted on the user's body, or only the exterior part 13 may be mounted on the user's body.

According to the present embodiment, it may further include buckle portions 15A and 15B for adjusting the length of the exterior portion 13 on the other side located on the opposite side of one side in the longitudinal direction of the exterior portion 13 .

In detail, the buckle portions 15A and 15B are formed on the other end opposite to the one end connected to the electronic device 21 of the battery-embedded belt 1, and the battery-embedded belt 1 with the electronic device 21 interposed therebetween. connect

The buckle parts 15A and 15B can adjust the length of the battery internal belt 1 by changing the connection position of the battery internal belt 1, or by adjusting the length of the buckle part 15A, 15B, the battery internal belt ( 1) may include a configuration that can adjust the length.

For example, the buckle portions (15A, 15B) may be a stopper that can adjust the length of the belt, such as a hole determinant (stop) type, a slide type, or one of the known fasteners of the belt.

FIG. 2A is a perspective view illustrating an electrode group of a secondary battery embedded in the battery-embedded belt of FIG. 1 , FIG. 2B is a perspective view illustrating an electrode group different from the electrode group of the secondary battery of FIG. 2A , and FIG. 2C is FIGS. 2A and 2B . It is a perspective view showing electrode groups and other electrode groups of secondary batteries.

In addition, FIG. 3 is a schematic diagram schematically showing that electrode groups of secondary batteries according to an embodiment of the present invention are combined, and FIG. 4 is a schematic diagram showing that the electrode group according to an embodiment of the present invention is sealed by an exterior part. It is a schematic diagram shown as

The secondary battery 11 according to this embodiment is a lithium ion secondary battery manufactured by sealing an electrode group together with an electrolyte in a container of a certain shape or a lithium ion manufactured by injecting an electrolyte immediately before sealing by the exterior part 13 . It may be a secondary battery.

Hereinafter, the secondary battery 11 will be described as a lithium ion secondary battery manufactured by injecting an electrolyte just before being sealed by the exterior part 13 .

Referring to FIGS. 2A to 2C , the secondary battery 11 embedded in the battery-embedded belt 1 includes an electrode group consisting of a positive electrode plate, a negative electrode plate, and a separator, and is sealed by the external part 13 after the electrolyte is injected. It is a lithium ion secondary battery manufactured by

The electrolyte may be used without limitation if it is used in a known lithium ion secondary battery.

As will be described later, the electrolyte is injected just before the electrode group is sealed by the exterior part 13 and is impregnated into the electrode group.

The electrode group can be formed by a positive electrode, a negative electrode, and a separator used in a known lithium ion secondary battery.

In addition, as the structure of the electrode group, the structure shown in FIGS. 2A to 2C can be used.

For example, as shown in FIGS. 2A and 2B , the electrode groups 111A and 111B may include a wound electrode group formed by winding a separator with an anode and a cathode therebetween.

Also, as shown in FIG. 2A , the positive terminal 113A and the negative terminal 115A may respectively protrude in the same direction as the winding axis of the electrode group 111A.

The positive terminal 113A is installed to protrude in both directions from the electrode group 111A, and the positive terminal 113A has a portion protruding in a first direction and a portion protruding in a second direction opposite to the first direction. A portion protruding in the first direction may protrude from an upper end of the electrode group 111A, and a portion protruding in the second direction may protrude from a lower end of the electrode group 111A.

The portion protruding in the first direction and the portion protruding in the second direction may be disposed on a straight line or disposed in parallel. Also, the portion protruding in the first direction may be shorter or longer than the portion protruding in the second direction.

The negative terminal 115A is installed to protrude in both directions from the electrode group 111A, and the negative terminal 115A has a portion protruding in a first direction and a portion protruding in a second direction opposite to the first direction. A portion protruding in the first direction may protrude from an upper end of the electrode group 111A, and a portion protruding in the second direction may protrude from a lower end of the electrode group 111A.

The portion protruding in the first direction and the portion protruding in the second direction may be disposed on a straight line or disposed in parallel. Also, the portion protruding in the first direction may be shorter or longer than the portion protruding in the second direction.

In addition, as shown in FIG. 2B , the positive terminal 113B and the negative terminal 115B protrude from both side ends of the electrode group 111B in a direction orthogonal to the winding axis of the electrode group 111B. may be That is, the protruding positive terminal 113B and the negative terminal 115B are provided at one side end of the electrode group 111B, and the positive terminal 113B and the negative terminal 115B protruding also from the other side end of the electrode group 111B. can be installed.

In addition, as shown in FIG. 2C , the electrode group 111C may be a stacked electrode group formed by stacking a separator with an anode and a cathode therebetween.

In addition, the positive terminal 113C and the negative terminal 115C may be formed to protrude from opposite sides of the electrode group 111C, respectively.

On the other hand, in any of the electrode groups 111A, 111B, and 111C, the positive terminals 113A, 113B, and 113C and the negative terminals 115A, 115B, and 115C are formed to be separated from each other.

As shown in FIG. 3 , in the electrode groups 111 and 111 ′ according to an embodiment of the present invention, positive terminals 113 and 113 ′ and negative terminals 115 and 115 ′ are formed from two opposite sides, respectively. isolate and protrude.

Here, the electrode group 111 and the electrode group 111' are arranged such that the positive terminal 113 and the positive terminal 113' are opposed, and the negative terminal 115 and the negative terminal 115' are opposite to each other. is connected to

On the other hand, the positive terminals and the negative terminals may be resistance welding or ultrasonic bonding of the positive terminals or the negative terminals, respectively.

Further, the positive terminal and the negative terminal may be electrically connected via another current collector plate or the like.

The electrode group 111 according to the exemplary embodiment of the present invention is sequentially electrically connected to the other electrode group 111' by the connection method as described above.

Therefore, each electrode group 111 is connected to the connecting portions 143 and 145 including the positive connecting portion 143 formed by connecting the positive terminal 113 to each other and the negative connecting portion 145 formed by connecting the negative terminal 115 to each other. The positive and negative electrodes are electrically connected.

In addition, each electrode group 111 has a positive electrode and a negative electrode connected to each other in the form of being arranged in a line in one direction.

On the other hand, in the above, the direction in which each electrode group 111 is arranged in a line becomes the longitudinal direction in the battery-embedded belt 1 after being sealed by the exterior part 13 .

Therefore, the shorter the length of the electrode group 111 in the direction in which they are arranged in a row, the more batteries can be arranged in a row with respect to the battery-embedded belt 1 of the same length.

Referring to FIG. 4 , the electrolyte is injected into the electrode group 111 electrically connected at the positive electrode connection part 143 and the negative electrode connection part 145 by the above-described method, and the electrode group 111 by the external part 13 . ) and the electrolyte are sealed.

Here, the exterior part 13 is made of a laminate film having waterproofness and insulation, or a metal exterior having insulation by coating the interior with an aluminum laminated film, a stainless laminated film, a resin, or the like. can be made with

Accordingly, the exterior part 13 according to the present embodiment may have higher waterproof and insulating properties.

As shown in the drawing after sealing of FIG. 4 , as the exterior part 13 is heat-sealed, the battery-embedded belt 1 according to an embodiment of the present invention has a positive electrode connection part 143 between the electrode groups 111 . and the periphery of the negative connection part 145 and the exterior part 13 is compressed and sealed.

Meanwhile, the exterior part 13 may have a size capable of integrally sealing the positive electrode connection part 143 , the negative electrode connection part 145 , and the electrode group 111 .

According to this configuration, the electrode group 111 according to an embodiment of the present invention may be sealed with the exterior part 13 having high waterproof and insulating properties.

In addition, the electrode group 111 can be sealed with the exterior part 13 by simple thermal fusion using a mold jig matching the shape of the electrode group 111 using the laminate film.

On the other hand, in the above, the exterior part 13 has been described as a laminate film, but the present invention is not limited to the above example.

For example, the exterior part 13 may be synthetic rubber or natural rubber.

According to this configuration, the electrode group 111 can be sealed by synthetic rubber or natural rubber having high waterproof and insulating properties.

In addition, the battery-embedded belt 1 sealed with synthetic rubber or natural rubber with high flexibility can be preferably used as the belt.

According to the above sealing method, the battery-embedded belt 1 according to an embodiment of the present invention has the positive terminal 113 , the negative terminal 115 , the positive electrode connection part 143 , and the negative electrode connection part 145 of the electrode group 111 . ) can be sealed and coated with the exterior part 13 without exposing it to the outside.

In addition, since the battery-embedded belt 1 according to an embodiment of the present invention includes a plurality of secondary batteries 11, a high capacity can be realized by electrically connecting each of them in parallel.

Therefore, since it is not necessary to increase the capacity of each secondary battery 11 , the safety of the secondary battery 11 embedded in the battery-embedded belt 1 can be improved.

In addition, since the battery-embedded belt 1 according to an embodiment of the present invention is mounted on the body, the use environment is room temperature.

Therefore, since the secondary battery 11 embedded in the battery-embedded belt 1 does not need to consider the characteristics at extremely low or high temperatures, only the characteristics at room temperature need to be considered, so that the battery characteristics can be further improved. there is.

Therefore, in the battery-embedded belt 1 according to an embodiment of the present invention, a short circuit at the electrode terminal of the secondary battery 11 can be prevented by the external part 13 having waterproof and insulating properties.

5 is a schematic diagram schematically showing a battery-embedded belt according to a first modification of the present invention, FIG. 6 is a schematic diagram schematically showing a battery-embedded belt according to a second modification of the present invention, and FIG. It is a schematic diagram schematically showing a battery-embedded belt according to a third modified example.

Referring to FIG. 5 , the position in which the secondary battery 11 is embedded in the battery-embedded belt 1A according to the first modified example of the present invention is the secondary battery 11 of the battery-embedded belt 1 of FIG. 1 . It is different from the built-in location.

That is, the secondary battery 11 of the battery-embedded belt 1 described in FIG. 1 was built-in only in one of the battery-embedded belts 1 connected to both ends of the electronic device 21, but the battery-embedded battery according to the first modification example In the belt 1A, each of the battery-embedded belts 1A connected to both ends of the electronic device 21 is incorporated.

On the other hand, in the first modification of the present invention, in which side of the battery-embedded belt 1A connected to both ends of the electronic device 21 and at what ratio the secondary battery 11 is built-in can be arbitrarily selected.

Referring to FIG. 6 , in the battery-embedded belt 1B according to the second modified example of the present invention, when the secondary battery 11 is mounted on the battery-embedded belt 1B, the secondary battery 11 is brought closer to the body. It is sealed by the exterior part 13 so as to protrude.

In addition, in the battery-embedded belt 1B according to the second modification, the positive electrode connecting portion 143 and the negative electrode connecting portion 145 for connecting the positive and negative electrodes of the secondary battery 11 are equipped with the battery-embedded belt 1B. When installed on one surface of the exterior part 13 is formed to be disposed on the opposite side to the body.

According to this configuration, when an abnormality occurs in the secondary battery 11, the terminal and wiring (that is, the positive terminal, the negative terminal, the positive electrode connection part 143 and the negative electrode connection part 145) most likely to generate heat are connected to the battery-embedded belt. (1B) can be placed so that it does not come into direct contact with the body when it is mounted.

Accordingly, the battery-embedded belt 1B can improve the safety of the user when an abnormality occurs in the secondary battery 11 .

Referring to FIG. 7 , in the battery-embedded belt 1C according to the third modified example, the positive electrode connection part 143 and the negative electrode connection part 145 electrically connecting the secondary battery 11 are external parts of the battery-embedded belt 1C. It is located at the central portion in the thickness direction of (13) and is sealed by the exterior portion (13).

According to this configuration, as in the second modification, the terminal and wiring (that is, the positive terminal, the negative terminal, the positive electrode connection part 143, and the negative electrode connection part 145) most likely to generate heat when an abnormality occurs in the secondary battery 11 is connected. It can be placed so that it does not come into contact with the user's body.

8 is a schematic diagram schematically illustrating a first modified example in which electrode groups of secondary batteries embedded in a battery embedded belt are combined according to another embodiment of the present invention.

Referring to FIG. 8 , a hinge structure may be used to connect the electrode groups 211 and 311 according to the first modification.

In detail, a through hole is formed in each of the negative terminal 215 of the electrode group 211 and the negative terminal 315 of the electrode group 311 , and as a pin 241 passes through the through hole, the negative electrode The terminals 215 and 315 are bonded to each other so that they can rotate freely.

Also, the positive terminals 213 and 313 are connected in a hinge structure using pins so that they can rotate freely with each other, similarly to the negative terminals.

According to this configuration, the electrode group 211 and the electrode group 311 connected by the hinge structure can freely rotate with each other.

Accordingly, in the battery-embedded belt using the electrode groups 211 and 311 having such a connection, flexibility in the longitudinal direction can be further improved.

In addition, when the positive electrode connection part 143 and the negative electrode connection part 145 are formed by welding the electrode terminals as shown in FIG. 3, the positive electrode connection part 143 and the negative electrode connection part ( 145) is repeatedly bent and there is a possibility of being disconnected by fatigue failure.

However, according to the first modified example related to the connection of the electrode group, since the anode connecting portion 143 and the cathode connecting portion 145 have a freely rotatable hinge structure, there is no possibility of the aforementioned disconnection.

In addition, the negative reinforcing tab 245 is welded to the negative terminals 215 and 315 and the positive reinforcing tab 243 is bonded to the positive terminals 213 and 313 by welding, and the negative reinforcing tab 245 is the negative electrode. It is installed to cover the hinge structure connecting the terminals 215 and 315 , and the positive reinforcing tab 243 is installed to cover the hinge structure connecting the positive terminals 213 and 313 .

The positive electrode reinforcement tab 243 may be installed to cover one or both surfaces of the positive electrode terminals 213 and 313 , and the negative electrode reinforcement tab 245 may be installed to cover one or both surfaces of the negative electrode terminals 215 and 315 . there is.

9 is a schematic diagram schematically illustrating a second modified example in which electrode groups of secondary batteries embedded in a battery embedded belt are combined according to another embodiment of the present invention.

Referring to FIG. 9 , in the electrode group 411 according to the second modification, the positive terminal 413 and the negative terminal 415 respectively protrude from a direction orthogonal to the direction in which the electrode group 411 is arranged. .

In addition, the positive electrode terminal 413 is connected to the positive electrode connector 443 as a current collector for connecting the positive terminal of each electrode group, and the negative terminal 415 is the negative electrode connector 445 as the current collector for connecting the negative terminal of each electrode group. ) is connected with

According to this configuration, since the positive electrode connection part 143 and the negative electrode connection part 145 are not formed between each electrode group, the distance between each electrode group can be narrowed and arranged.

Accordingly, in the battery-embedded belt using the electrode group with such a connection, a larger number of batteries can be accommodated for the same belt length, so that it is possible to improve the battery capacity of the battery-embedded belt.

10A is a schematic view schematically illustrating a third modified example in which electrode groups of secondary batteries embedded in a battery-embedded belt are combined according to another embodiment of the present invention, and FIG. 10B is a cross-sectional view taken in the X1-X1 direction in FIG. 10A. am.

Referring to FIGS. 10A and 10B , in the electrode group 511 according to the third modified example, the positive terminal 513 and the negative terminal 515 respectively protrude from the direction in which the electrode group 511 is arranged. That is, two positive terminals 513 protrude from the electrode group 511 in opposite directions, and two negative terminals 515 protrude from the electrode group 511 in opposite directions.

As shown in FIG. 10B , the positive terminal 513 and the negative terminal 515 are formed on surfaces opposite to each other with respect to the thickness direction of the electrode group 511 .

In addition, the positive terminal 513 is connected to the positive reinforcement tab 543 connecting the positive terminals 513 of each electrode group 511 , and the negative terminal 515 is the negative terminal 515 of each electrode group 511 . ) is connected to the negative reinforcement tab 545 connecting them. The positive electrode reinforcing tab 543 and the negative reinforcing tab 545 may be made of a metal including copper, such as copper or a copper alloy.

The positive reinforcing tab 543 is welded to the positive terminals 513 , the negative reinforcing tab 545 is joined to the negative terminals 515 by welding, and the positive reinforcing tab 543 and the negative reinforcing tab 545 are It is formed continuously in the longitudinal direction of the exterior part. The positive electrode reinforcement tab 543 is welded to the plurality of positive electrode terminals 513 , and the positive electrode reinforcement tab 543 may electrically connect at least three or more secondary batteries. In addition, the negative reinforcing tab 545 is welded to the plurality of negative terminals 515 , and the negative reinforcing tab 545 may electrically connect at least three or more secondary batteries.

The positive reinforcing tab 543 may be joined to the positive terminal 513 by ultrasonic welding, resistance welding, etc., and the negative reinforcing tab 545 may be joined to the negative terminal 515 by ultrasonic welding, resistance welding, or the like. The positive reinforcing tab 543 and the negative reinforcing tab 545 are bent in an arc shape.

Meanwhile, the positive electrode reinforcing tab 543 and the negative reinforcing tab 545 may be formed on surfaces opposite to each other with respect to the thickness direction of the electrode group 511 . The positive reinforcing tab 543 is located on the first surface of the secondary battery, and the negative reinforcing tab 545 is located on the second surface of the secondary battery facing in a direction opposite to the first surface.

In other words, the positive electrode terminal 513 , the positive electrode reinforcement tab 543 , and the negative electrode reinforcement tab 545 may be positioned on a diagonal line with the electrode group 511 interposed therebetween.

When the reinforcing tabs welded to the terminals are installed in this way, the strength is improved by the reinforcing tabs, so that even if the terminals are repeatedly bent, it is possible to prevent the terminals from breaking. In addition, since the reinforcing tabs are welded to different surfaces, the terminals can be supported in both directions. In addition, since the reinforcing tabs are formed to be long, they are formed longer than when only the terminals are connected, so that they can be flexibly bent.

11A is a schematic view schematically illustrating a fourth modified example in which electrode groups of secondary batteries embedded in a battery-embedded belt are combined according to another embodiment of the present invention, and FIG. 11B is a cross-sectional view taken in the X2-X2 direction in FIG. 11A am.

11A and 11B , in the electrode group 611 according to the fourth modification, the positive terminal 613 and the negative terminal 615 are formed to protrude from the direction in which the electrode group 611 is arranged, respectively. That is, two positive terminals 613 protrude from the electrode group 611 in opposite directions, and two negative terminals 615 protrude from the electrode group 611 in opposite directions.

11B, the positive terminal 613 is connected to the positive reinforcement tabs 641 and 643 connecting the positive terminals 613 of each electrode group 611, and the negative terminal 615 is each electrode group. It is connected to the negative reinforcement tabs 644 and 645 connecting the negative terminals 615 of 611 . The anode reinforcing tabs 641 and 643 and the anode reinforcing tabs 644 and 645 may be made of a metal including copper, such as copper or a copper alloy.

Two positive electrode reinforcement tabs 641 and 643 are welded to the positive electrode terminals 613 , and the positive electrode reinforcement tabs 641 and 643 are welded to both surfaces of the positive electrode terminal 613 . The negative reinforcing tabs 644 and 645 are welded to the negative terminals 615 , and the negative reinforcement tabs 644 and 645 are welded to both surfaces of the negative terminals 615 . The positive reinforcing tabs 641 and 643 and the negative reinforcing tabs 644 and 645 are formed to extend in the longitudinal direction of the exterior part.

The positive electrode reinforcement tabs 641 and 643 are welded to the plurality of positive electrode terminals 613 , and the positive electrode reinforcement tabs 641 and 643 may electrically connect at least three or more secondary batteries. In addition, the negative reinforcing tabs 644 and 645 are welded to the plurality of negative terminals 615 , and the negative reinforcing tabs 644 and 645 may electrically connect at least three or more secondary batteries.

The positive electrode reinforcement tabs 641 and 643 may be joined to the positive electrode terminal 613 by ultrasonic welding, resistance welding, etc., and the negative electrode reinforcement tabs 644 and 645 are bonded to the negative electrode terminal 615 by ultrasonic welding, resistance welding, etc. can be

When the reinforcing tabs are welded on both sides of the terminals as described above, the strength is further improved by the reinforcing tabs, so that even if the terminals are repeatedly bent, it is possible to prevent the terminals from breaking.

12A is a schematic diagram schematically illustrating a fifth modified example in which electrode groups of secondary batteries embedded in a battery-embedded belt are combined according to another embodiment of the present invention, and FIG. 12B is a cross-sectional view taken along the X3-X3 direction in FIG. 12A . am.

12A and 12B , in the electrode group 711 according to the fifth modification, the positive electrode terminal 713 and the negative electrode terminal 715 respectively protrude from the direction in which the electrode group 711 is arranged. That is, two positive terminals 713 protrude from the electrode group 711 in opposite directions, and two negative terminals 715 protrude from the electrode group 711 in opposite directions.

As shown in FIG. 12B , the positive terminal 713 is connected to the positive reinforcement tab 743 connecting the positive terminals 713 of each electrode group 711 , and the negative terminal 715 is each electrode group 711 . ) is connected to the negative reinforcement tab 745 connecting the negative terminals 715 . The positive electrode reinforcing tab 743 and the negative reinforcing tab 745 may be formed of a metal including copper, such as copper or a copper alloy.

The positive electrode reinforcement tab 743 is welded to the surface facing the first direction from the positive electrode terminal 713 , and the negative electrode reinforcement tab 745 is on the surface facing the second direction opposite to the first direction from the negative electrode terminal 715 . are welded Here, the positive reinforcing tab 743 and the negative reinforcing tab 745 are installed only at the portion where the terminal is located and do not extend to the electrode group 711 .

13A is a schematic view schematically illustrating a sixth modified example in which electrode groups of secondary batteries embedded in a battery-embedded belt according to another embodiment of the present invention are combined, and FIG. 13B is a cross-sectional view taken along the X4-X4 direction in FIG. 13A. am.

13A and 13B , in the electrode group 811 according to the sixth modification, the positive electrode terminal 813 and the negative electrode terminal 815 respectively protrude from the direction in which the electrode group 811 is arranged. That is, two positive terminals 813 protrude from the electrode group 811 in opposite directions, and two negative terminals 815 protrude from the electrode group 811 in opposite directions.

As shown in FIG. 13B , the positive terminal 813 is connected to the positive reinforcement tabs 841 and 843 connecting the positive terminals 813 of each electrode group 811 , and the negative terminal 815 is each electrode group. It is connected to the negative reinforcement tabs 844 and 845 connecting the negative terminals 815 of the 811 . The positive reinforcing tabs 841 and 843 and the negative reinforcing tabs 844 and 845 may be formed of a metal including copper, such as copper or a copper alloy.

Two positive electrode reinforcement tabs 841 and 843 are welded to the positive electrode terminals 813 , and the positive electrode reinforcement tabs 841 and 843 are welded to both surfaces of the positive electrode terminal 813 . The negative reinforcing tabs 844 and 845 are welded to the negative terminals 815 , and the negative reinforcement tabs 844 and 845 are welded to both sides of the negative terminal 815 . Here, the positive reinforcing tabs 841 and 843 and the negative reinforcing tabs 844 and 845 are installed only in the portion where the terminal is located and do not extend to the electrode group 811 .

As described above, according to the battery-embedded belt according to an embodiment of the present invention, the positive electrode terminal, the negative electrode terminal, and the wiring portion are coated with an exterior portion having water resistance and insulation properties and sealed, thereby preventing a short circuit in the electrode terminal. it is possible

In addition, according to the battery-embedded belt according to an embodiment of the present invention, it is possible to improve the battery capacity by embedding more secondary batteries.

Therefore, according to the battery-embedded belt according to an embodiment of the present invention, it is possible to improve the usable time of the electronic device connected to the battery-embedded belt.

In addition, according to the battery-embedded belt according to an embodiment of the present invention, since the additional tab supports the terminals, it is possible to prevent the terminals from being fractured by fatigue. In addition, since the reinforcing tabs are formed in a longitudinal direction of the exterior part, they may be bent more flexibly.

Meanwhile, in the above embodiment, the secondary batteries 11 are arranged in a line and are mainly described as being embedded in the battery-embedded belt 1, but the present invention is not limited to this example.

For example, the secondary batteries 11 may be arranged in a plurality of rows of two or more rows and incorporated in the battery-embedded belt 1 .

In addition, the secondary batteries 11 may be arranged in a matrix and incorporated in the battery-embedded belt 1 .

Although preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications can be made within the scope of the claims, the detailed description of the invention, and the accompanying drawings.

Secondary battery: 11 External part: External part
Buckle part: 15A, 15B Electronic devices: 21
Electrode group: 111 Positive terminal: 113
Negative terminal: 115 Positive connection: 143
Negative connection part: 145 Positive reinforcement tab: 243
Negative Reinforcement Tab: 245

Claims (20)

a plurality of secondary batteries each having a positive electrode terminal and a negative electrode terminal protruding in both directions;
a positive reinforcing tab electrically connecting positive terminals of the secondary batteries and joined to the positive terminals;
a negative reinforcing tab electrically connecting negative terminals of the secondary batteries and joined to the negative terminals; and
An exterior part sealing the positive electrode terminal, the negative electrode terminal and the positive electrode reinforcement tab and the negative electrode reinforcement tab of the plurality of secondary batteries
including,
The positive electrode reinforcing tab is welded to a surface facing the first direction from the positive electrode terminal, and the negative reinforcing tab is welded to a surface facing the second direction opposite to the first direction from the negative electrode terminal. delete According to claim 1,
The positive reinforcing tab and the negative reinforcing tab are formed to extend in the longitudinal direction of the exterior part,
The positive reinforcing tab is welded to a plurality of positive terminals, located on a first surface of the secondary battery, and the negative reinforcing tab is welded to a plurality of negative terminals, on a second surface facing the first surface in the secondary battery Battery built-in belt located in. According to claim 1,
The positive electrode reinforcing tab is made of a plurality and is welded to both sides of the positive electrode terminal a battery-embedded belt. According to claim 1,
The negative reinforcing tab is made of a plurality of battery-embedded belts welded to both sides of the negative terminal. According to claim 1,
The positive reinforcing tab and the negative reinforcing tab are formed to extend in the longitudinal direction of the exterior part,
The positive reinforcing tab is welded to a plurality of positive terminals and welded to both sides of the positive terminals, and the negative reinforcing tab is welded to a plurality of negative terminals and welded to both sides of the negative terminals. According to claim 1,
The secondary battery is a battery-embedded belt including an electrode group wound around a positive electrode, a negative electrode, and a separator. 8. The method of claim 7,
The positive electrode terminal and the negative electrode terminal each protrude in the same direction as the winding axis of the electrode group. 8. The method of claim 7,
The positive electrode terminal and the negative electrode terminal each protrude in a direction perpendicular to a winding axis of the electrode group. 8. The method of claim 7,
The secondary battery is a battery-embedded belt in which the electrolyte is a gel-type polymer battery. According to claim 1,
The plurality of secondary batteries are electrically connected in parallel by the positive electrode reinforcement tab and the negative electrode reinforcement tab. 12. The method of claim 11,
The plurality of secondary batteries are arranged in at least one line or more in a longitudinal direction of the exterior part. 13. The method of claim 12,
Each of the positive terminal and the negative terminal of one secondary battery of the plurality of secondary batteries is disposed to face each other and the positive terminal and the negative terminal of another secondary battery of the plurality of secondary batteries adjacent in the longitudinal direction of the exterior part belt. According to claim 1,
The positive electrode terminal and the negative electrode terminal are connected by a hinge structure, and the positive electrode reinforcement tab and the negative electrode reinforcement tab are installed to cover the hinge structure. According to claim 1,
The exterior part is a battery inner belt for integrally sealing the positive electrode terminal, the negative electrode terminal, the positive electrode reinforcement tab, and the negative electrode reinforcement tab. 16. The method of claim 15,
The exterior part includes a laminate film and a battery-embedded belt. According to claim 1,
The positive electrode reinforcement tab and the negative electrode reinforcement tab are curved battery embedded belts. According to claim 1,
The exterior part is connected to an electronic device at one end of the exterior part in the longitudinal direction,
The battery-embedded belt further comprising a connection unit for energizing the plurality of secondary batteries and the electronic device. 19. The method of claim 18,
The battery inner belt further comprising a buckle part for adjusting the length of the external part on the other side opposite to the one side in the longitudinal direction of the external part. According to claim 1,
The positive electrode reinforcing tab and the negative reinforcing tab are made of a metal containing copper.

Images