KR102348409B1 - Band for wearable electronic apparatus and electronic apparatus having the same - Google Patents

Abstract

The present invention relates to a wearable electronic device band and an electronic device including the same. More specifically, when a battery in the wearable electronic device band overheats due to overload, etc., the terminal connecting the wrist band and the battery is short-circuited to reduce the battery It relates to an invention in which an adhesive having a low melting point is introduced into an adhesive part and/or a joint part of a accommodating part for accommodating a battery in a wristband and a cover including the battery so that the supply of electricity can be easily cut off.

Description

Band for wearable electronic device and electronic device including the same

The present invention relates to a wearable electronic device band and an electronic device including the same.

In general, a smartphone terminal is a multimedia integrated device that is indispensable to modern people, and unlike the mobile phone terminal of the past, it aims to perform various functions such as the Internet, applications, TV, navigation, and SNS in addition to calling functions.

In order to implement various functions, the size of the smartphone terminal increases as the display becomes larger to implement various functions, so it is inconvenient to carry when wearing simple clothes such as for a walk or exercise, and problems of theft and loss occur.

Furthermore, when carrying a smartphone terminal in a bag, etc., there is the inconvenience of taking out the smartphone terminal to make incoming and outgoing calls or use the message function, and it is difficult to hear the vibration or ringtone of the smartphone terminal in the bag. There is a problem in that I cannot receive incoming calls and messages.

In order to solve this problem, a band-type portable terminal has been proposed.

Examples of wearing a 'band-type mobile terminal' like clothes or accessories have been suggested, and smart devices in the form of a wristwatch worn on the wrist or arm are being released. Smart devices in the form of wrist watches (aka 'smart watches') are small and light, so you can wear them on your wrist all the time to check incoming calls and messages, increasing portability.

However, since the power supply for operating the device is formed only in the main body of the conventional smart watch, the amount of power supplied is limited, so the use time is short, and it is very cumbersome to charge when all the power is consumed during outdoor activities. .

In order to solve this problem, a technology is being developed to supply power to the battery of the main body by embedding a battery in the wristwatch-type smart device band. As a problem may occur, a technology for easily and quickly separating or electrically shorting the battery from the band of the smart device is required.

Korean Patent Publication No. 2014-0064687 (2014.05.28) Korean Patent Registration No. 1470428 (2014.12.08)

The present invention has been devised in view of the above points, and when the flexible battery built in the band for wearable electronic devices is overheated, the band for wearable electronic devices that can quickly remove, separate, or electrically short the flexible battery from the band and An object of the present invention is to provide a wearable electronic device including the same.

In addition, an object of the present invention is to provide a band for a wearable electronic device configured so that the body is not damaged by the flexible battery even when the flexible battery in the band for the wearable electronic device is overheated, and a wearable electronic device including the same.

According to one aspect of the present invention for achieving the above object, there is provided a band for a wearable electronic device, comprising a band body, the band body comprising: a thermoplastic resin adhesive layer; a first terminal; a accommodating part in which the flexible battery can be accommodated; a cover coupled to the upper portion of the receiving unit; and a flexible battery; may provide a band for a wearable electronic device including.

In addition, the band body may further include a breaking portion formed between the cover and the band body to break a portion of the cover from the band body.

In addition, the thermoplastic resin adhesive layer may be formed between the inner surface of the accommodating part and the inner surface of the cover, or between the inner surface of the accommodating part and the inner surface of the cover and the lower surface of the flexible battery.

In addition, the thermoplastic resin adhesive layer may have a melting point of 65° C. to 80° C., and a curing temperature of 60° C. or less.

In addition, the thermoplastic resin adhesive layer may include a heat release adhesive or a pressure sensitive adhesive.

In addition, the thermoplastic resin adhesive layer may be characterized in that the difference between the tensile shear adhesive strength under 30 ℃ ~ 60 ℃ and the tensile shear adhesive strength under 65 ℃ ~ 80 ℃ 40 ~ 200 Mpa.

In addition, the thermoplastic resin adhesive layer may have a cut adhesive strength under 30° C. to 60° C. and a cut adhesive strength under 65° C. to 80° C. of 20 to 100 Mpa.

In addition, a portion of the flexible battery is built-in (or inserted) inside the cover so that the cover and the flexible battery are integrated, or a first adhesive layer formed between the lower surface of the cover and a part of the flexible battery Through this, the cover and a portion of the flexible battery may be integrated.

In addition, the first adhesive layer may be formed of a thermoplastic resin adhesive or a thermosetting resin adhesive having a melting point of 100° C. or higher.

In addition, the first adhesive layer may include at least one selected from silicone, polyphthalate, acid modified polypropylene (PPa), or acid modified polyethylene (PEa).

In addition, the flexible battery has a connection terminal electrically connected to the first terminal, and when the breaking part is broken and a part of the cover is separated from the band body, the connection terminal of the flexible battery is connected to the first terminal and may be formed to be electrically short-circuited.

In addition, the band body and the cover coupled to the band body may be formed of the same flexible material.

In addition, the breakable portion may be formed along a portion of the circumference of the cover.

In addition, the breaking portion includes a first breaking line portion, a pair of second breaking line portions and a third breaking line portion, and the pair of second breaking line portions are formed in the major axis direction of the band body, the first breaking portion and The third dividing line portion may be formed in the short axis direction.

In addition, the cover may be formed in the form of a band formed in the long axis direction of the band body, and the breaking portion may be formed to have a thickness thinner than the thickness of the center of the cover to be easily broken by an external force.

In addition, the third breaking line portion of the breaking part is connected to the band body and integrated, and the first breaking line part and the pair of second breaking line parts can be short-circuited with the band body, so that the cover is broken from the band body. can

In addition, the flexible battery may be coupled to the inner surface of the cover facing the receiving portion or may be embedded in the cover.

In addition, the first terminal is located at one end in the extension direction of the band body, and the breaking portion may include a first breaking line portion formed on the upper surface side of the band body adjacent to the one end side.

In addition, the connection terminal may be disposed adjacent to the first breaking line portion.

In addition, the first breaking line portion may be formed in parallel with the corner portion formed at the one end of the band body.

In addition, one end of a pair of second breaking lines extending in the long axis direction of the band body may be connected to both ends of the first breaking line part.

In addition, the pair of second breaking line portions may be formed on the upper surface of the band body in parallel in the long axis direction of the band body, or respectively formed on both sides of the band body.

In addition, the breaking part may include a third breaking line part connecting the pair of second breaking line parts to the other end of the pair of second breaking line parts to each other.

In addition, the third breaking line portion may be formed on the other end side of the upper surface of the band body or the other end of the long axis direction of the band body.

In addition, when viewed in the minor axis direction of the band body, the width of the cover may be the same as or smaller than the width of the band body.

In addition, it may further include a protrusion or groove-shaped handle formed on the upper surface of the cover.

In addition, the flexible battery includes an exterior material, an electrode assembly, and an electrolyte, the exterior material and the electrode assembly are provided with a pattern for contraction and relaxation during bending, and the pattern of the exterior material and the electrode assembly may be provided to have a pattern that matches each other can

In addition, the electrode assembly includes a positive electrode having a positive electrode active material layer disposed on one side or both sides of a positive electrode current collector, a negative electrode and a separator having a negative electrode active material layer disposed on one side or both sides of the negative electrode current collector, and the positive electrode, the negative electrode and the separator The same pattern as the pattern of the exterior material may be provided for contraction and relaxation during silver bending.

In addition, the separator may include a nonwoven fabric layer and a nanofiber web layer containing polyacrylonitrile nanofibers laminated on one or both surfaces of the nonwoven layer.

In addition, the pattern is formed continuously or discontinuously, and the pattern may include one or more of a prism pattern, a semicircle pattern, a wave pattern pattern, a polygonal pattern, an embossing pattern, and a mixture thereof.

In addition, the band for the wearable electronic device described above may be a wrist worn band.

According to another aspect of the present invention, at least one information is displayed on one side, the information display unit is formed with a second terminal on one side; And coupled to the information display unit, the first terminal to the second terminal can be provided an electronic device comprising the aforementioned band for the wearable electronic device.

In addition, the electronic device may be a wearable electronic device, preferably a smart watch.

The band of the present invention is a wristband-shaped band with a built-in auxiliary battery and can be easily carried, and an electronic device including the same can supply power to the main body during outdoor activities in a state in which the main battery is discharged through the band.

In addition, the band and the electronic device of the present invention can be quickly removed from the band when the flexible battery, which is an auxiliary battery, is heated due to malfunction, overload, or the like.

1 is a perspective view showing a band according to an embodiment of the present invention.
2 is a perspective view illustrating an electronic device in which a band and a body are combined according to an embodiment of the present invention.
3 is a perspective view illustrating an electronic device in which a band and a main body are disassembled according to an embodiment of the present invention.
Figure 4 is a perspective view showing a broken state (and cover) of the band according to an embodiment of the present invention is broken.
5A to 5B are cross-sectional views taken along line AA of FIG. 2 , where FIG. 5A is a cross-sectional view in which the flexible battery is built-in (or inserted) inside the cover, and FIG. 1 It is a perspective view of a form that is adhered with an adhesive layer.
5c to 5e are cross-sectional views taken along line AA of FIG. 2, a perspective view showing a state in which the receiving part of the band and the cover are coupled, and a thermoplastic resin adhesive layer on the inner surface of the cover 167 and the inner surface of the receiving part 177. It is a perspective view of various formed embodiments.
6 is a cross-sectional view taken along line BB of FIG. 2 showing an electronic device in which a band and a body are combined according to an embodiment of the present invention.
7 is a cross-sectional view taken along line BB of FIG. 2 showing an electronic device in which a band and a body are combined according to an embodiment of the present invention.
8 is a cross-sectional view taken along line BB of FIG. 2 showing an electronic device in which a band and a body are combined according to another embodiment of the present invention.
9 is a cross-sectional view taken along line BB of FIG. 2 showing an electronic device in which a band and a body are combined according to another embodiment of the present invention.
10 is a diagram illustrating a flexible battery used in an electronic device according to an embodiment of the present invention.
11 is an enlarged cross-sectional view illustrating a detailed configuration of a flexible battery used in an electronic device according to an embodiment of the present invention.
13 to 16 are schematic diagrams illustrating various pattern shapes of a flexible battery used in an electronic device according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, the embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and the same reference numerals are assigned to the same or similar components throughout the specification.

In this specification, the long-axis direction means the longitudinal direction of the band 100 as shown in FIG. 1, and the short-axis direction means the width direction of the band.

Referring to FIG. 1 , the band 100 for a wearable electronic device of the present invention may include a band body 110 , a flexible battery (not shown), a cover 130 , and a breaking part 150 . The wrist wearable electric device band 100 of the present invention is connected to the information display unit 210 so that the electronic device 200 can be worn on the body and a flexible battery (not shown) capable of supplying power to the electronic device. Built-in, it is possible to supply power to electronic devices during outdoor activities even when the main battery is discharged. The band 100 for wearable electronic devices of the present invention can quickly remove (separate or break) the flexible battery from the band body 110 when the built-in flexible battery (not shown) is overheated.

First, the electronic device 200 including the wrist-worn electronic device band will be described below, and then the wearable electronic device band will be specifically described later.

2 and 3, the electronic device 200 of the present invention includes an information display unit 210 and a wearable electronic device band 100, and the wearable electronic device band is connected to the information display unit and embedded in the band. Even when the flexible battery 10 is overheated, it is possible to prevent the information display unit from being damaged.

In this case, the information display unit 210 includes a main body 211 and a second terminal 213, and the cross section of the main body may be formed of a circle, a rectangle, a polygon, etc., but the shape of the main body is not limited thereto.

On the other hand, the body 211 has a hollow portion formed therein, and a circuit board (not shown) is provided inside the body, and various information is displayed on one surface, for example, at least one piece of information on the upper surface as shown in FIG. 2 . A display unit may be provided to display . In this case, the user may check necessary information through the display unit of the main body 211 .

Here, the main body 211 may be a smart watch, and may be a device for displaying an image, such as a small DMB or PDP. In this case, the main body 211 may be applied to any electronic device capable of displaying various letters, numbers, and images on one surface through an electrical signal.

Also, the main body 211 may display the contents of the portable device and the electronic device through short-distance communication with the portable device and the electronic device.

Referring to FIG. 3 , a second terminal 213 for electrical connection with the flexible battery 10 may be disposed on one side of the main body 211 . In this case, the second terminal 213 may be formed of at least one pair and may be electrically connected to the first terminal 111 of the band body 110 to be described later.

Also, the second terminal 211 may be disposed on the left or right side of the body 210 to be recessed inside or exposed to the outside. In this case, one of the pair of second terminals 211 may be a negative electrode, and the other may be a positive electrode.

1 to 3 , the electronic device 200 may include a coupling unit 190 connecting the main body 211 and the wearable electronic device band 100 . In this case, the coupling part 190 may detachably connect the main body 211 and the band body 110 of the band 100 for wearable electronic devices.

At this time, in the present invention, the band body 110 may be made of a soft material such as synthetic material, leather, or metal material so that it can be worn on a part of the body. In this case, the band body 110 may be in a band shape to be worn on a part of the body, for example, a wrist, an ankle, a neck, or the like.

In addition, both ends of the band body 110 are spaced apart from each other and may be formed to be separated or coupled, but is not limited thereto, and both ends of the band body may be integrally coupled.

On the other hand, when both ends of the band body 110 of the present invention are formed to be spaced apart from each other, one end 110a of the band body and one end 211a of the main body 211 may be detachably connected.

At this time, the coupling part 190 is positioned at one end 110a of the band body 110 and one end 211a of the main body 211 so that one end 110a of the band body 110 and the main body 211 are formed. One end 211a is detachable so that the electronic device 200 can be worn on a part of the body.

At this time, one end 110a of the band body 110 and one end 211a of the main body 211 are made of a rigid material to facilitate the coupling of the band body and the body, and to increase the coupling force to be fixed while being coupled. .

Meanwhile, in the present invention, the coupling part 190 may include a coupling member 191 and a corresponding coupling member 193 .

Although not shown, at least one of the coupling member 191 and the corresponding coupling member 193 is made of a magnetic material, and the band body 110 and the body 211 may be detachable by magnetic force.

In this case, when the coupling member 191 is made of a magnetic material, the corresponding coupling member 193 may be made of a magnetic material or made of a material capable of being coupled by a magnetic force to strengthen the coupling force between the coupling member and the corresponding coupling member.

In addition, the coupling member 191 and the corresponding coupling member 193 may be entirely made of a magnetic material, or only a portion in contact with the coupling member and the corresponding coupling member may be made of a magnetic material.

Meanwhile, referring to FIGS. 1 and 3 , the coupling member 191 is formed in the band body 110 in a protrusion shape. In this case, the corresponding coupling member 193 may be formed in the body 211 in a groove shape that can be coupled to the coupling member.

As such, the coupling member 191 and the corresponding coupling member 193 may be detachably formed by shape fitting coupling, but the present invention is not limited thereto, and the coupling member may be formed in a protrusion shape or the coupling member may be formed in a groove shape. have.

Meanwhile, referring to FIG. 1 , the band body 110 of the present invention may have a first terminal 111 formed on one side thereof, for example, at one end 110a in the long axis direction of the band body. The first terminal 111 may be formed of at least one pair, and may be formed to be exposed to the outside or to be recessed inside. The first terminal 111 may be formed on one end 110a of the band body 110 to be electrically connected to the second terminal 213 .

Referring to FIG. 3 , the first terminal 111 may be electrically connected to the connection terminal 27 of the flexible battery 10 . When the flexible battery 10 is overheated, the connection terminal 27 formed on one side of the flexible battery and the first terminal 111 may be electrically shorted.

In this case, one of the pair of first terminals 111 may be a negative electrode, and the other may be a positive electrode. In addition, the first terminal 111 and the second terminal 211 of the information display unit 210 are electrically connected, and the information display unit 210 receives power by the flexible battery 10 when the main battery is discharged. can be supplied.

Meanwhile, referring to FIG. 4 , the band body 110 may include a accommodating part 113 in which the flexible battery 10 can be accommodated. In this case, the accommodating part 113 may have a groove shape having a cross section such as a circle, a rectangle, or a polygon.

In addition, the accommodating part 113 has a shape corresponding to the cover 130 to be described later, so that the accommodating part can have any shape as long as the cover is built-in (or inserted) and coupled to the accommodating part.

On the other hand, referring to FIG. 4 , the cover 130 of the present invention has an inner surface of the receiving part of the band body ( FIG. 5A ) to protect the flexible battery 10 disposed in the receiving part 113 of the band body 110 . 177).

In this case, the cover 130 may be formed in the form of a band formed in the long axis direction of the band body 110 . The cover 130 has a circular, rectangular, or polygonal cross-section, and may be formed of a circular plate, a rectangular parallelepiped, or a polygonal body, but is not limited thereto and may have any shape as long as it has a shape corresponding to the receiving part 113 .

4 and 5a to 5e, the cover 130, when viewed from the minor axis direction of the band body 110, the width (W1) of the cover is equal to or smaller than the width (W2) of the band body. can

5A and 5B, the flexible battery 10 is built-in (or inserted) inside the cover 130, or the first adhesive layer 310 on the inner lower end surface 166 of the cover through the flexible battery. (10) may be formed by being integrated with the cover. In addition, the inner surface 177 of the cover has an inner side surface 175 of the receiving portion and an inner upper surface 176 of the receiving portion, and the cover inner surface 167 has an inner side surface 165 of the cover and an inner lower end surface of the cover ( 166) is formed. And, when the cover is accommodated in the receiving portion, as shown in Fig. 5c, the inner surface 177 and the cover inner surface 167 of the cover are adhered through the thermoplastic resin adhesive layer, or as shown in Fig. 5d, the inner upper portion of the receiving portion The surface 176 and the inner lower end surface 166 of the cover are adhered through the thermoplastic resin adhesive layer, or, as shown in FIG. 5E , the inner side surface 175 of the cover and the inner surface 165 of the cover are adhered through the thermoplastic resin adhesive layer can be

The thermoplastic resin adhesive layer may be formed of a material that can be easily separated from the band body 110 under certain conditions. As an embodiment, the thermoplastic resin adhesive layer 300 has a melting point of 65°C to 80°C. By forming a thermoplastic resin adhesive that is preferably 65 ° C. to 75 ° C., and having a curing temperature of less than 65 ° C., preferably 60 ° C. or less, by the heat generated by the flexible battery, the cover containing the flexible battery and accommodation If the temperature of the part is less than 65 ℃, while maintaining high adhesion between the cover and the accommodating part, from 65 ℃ or more, the cured adhesive melts and it is possible to easily separate (remove or break) the cover from the accommodating part.

In addition, the thermoplastic resin adhesive used to form the thermoplastic resin adhesive layer can be used without particular limitation as long as it has the above melting point and curing temperature, and also covered repeatedly using a heat release adhesive and/or a pressure sensitive adhesive. and the receiving unit may be combined or separated. In addition, the thermoplastic resin adhesive may use a two-component adhesive, and the thermoplastic resin adhesive may control a melting point by adding a plasticizer. To give an example of the thermoplastic resin adhesive, the melting point can be adjusted by adjusting the amount of the plasticizer and adding it to the polyvinyl acetate resin adhesive, polyvinyl chloride-based adhesive, polystyrene-based adhesive, polyurethane-based adhesive, polypropylene-based adhesive, and the like.

In addition, the thermoplastic resin adhesive layer may be 30 to 250 Mpa, preferably 40 to 200 Mpa, of the tensile shear adhesive strength under 30 ° C. to 60 ° C. and the tensile shear adhesive strength under 65 ° C. to 80 ° C.

In addition, the thermoplastic resin adhesive layer may have a cut adhesive strength at 30° C. to 60° C. and a cut adhesive strength under 65° C. to 80° C. of 10 to 150 Mpa, preferably 20 to 100 Mpa.

In addition, the average thickness of the thermoplastic resin adhesive layer may be formed in a range that satisfies the tensile shear adhesive strength and the cut adhesive strength, and preferably may be formed to an average thickness of 1 μm to 50 μm.

And, when the flexible battery 10 is adhered to the cover through the first adhesive layer 310 on the inner lower end surface 166 of the cover and integrally formed as shown in FIG. 5B, the first adhesive layer is the thermoplastic resin An adhesive of a material different from that of the adhesive layer is used, and it is preferable to use an adhesive having a melting point of 90° C. or higher, and preferably an adhesive having a melting point of 100° C. or higher. In addition, the kind of adhesive used to form the first adhesive layer may be used without particular limitation, as long as it has the above melting point and has excellent adhesion between the flexible battery and the cover. As an example, silicone, polyphthalate, PPa (acid) The first adhesive layer may be formed using at least one selected from modified polypropylene) or PEa (acid modified polyethylene).

In addition, the first adhesive layer may be formed to have an average thickness of 5 μm to 40 μm, preferably 10 μm to 35 μm. At this time, if the average thickness of the first adhesive layer is less than 5 μm, sufficient adhesive force cannot be secured and when the cover is separated from the band body, the flexible battery falls off from the cover, and the connection terminal of the flexible battery and the first terminal are not short-circuited. There may be, and it is uneconomical to exceed 40 μm.

As described above, the flexible battery 10 is embedded in the cover 130 as shown in FIGS. 6 and 7 or the cover 130 is the receiving part 113 of the band body as shown in FIGS. 8 and 9 . ), the flexible battery 10 may be coupled to the inner lower end surface 166 of the cover through the first adhesive layer.

At this time, in order to electrically short the connection terminal 27 and the first terminal 111 of the flexible battery 10, the cover 130 and the flexible battery 10 are removed from the receiving part 113 of the band body 110 together. By separating, the connection terminal 27 and the first terminal 111 of the flexible battery 10 may be electrically short-circuited.

On the other hand, the band body 110 of the present invention and the cover 130 coupled to the band body are formed of the same soft material and can be worn on a part of the body, for example, a wrist, an ankle, a neck, or the like.

1 and 4, the band 100 of the present invention may further include a breaking part 150 to further facilitate separation of the cover and the band body. Through this, the band 100 of the present invention breaks the breaking part when the flexible battery 10 built into the band is overheated to separate some or all of the cover coupled with the flexible battery from the band body, thereby quickly removing the flexible battery from the band. allow it to be removed

The breakable part 150 of the present invention may be formed along at least a portion of the circumference of the cover 130 to break a portion of the cover from the band body 110 . As an example, by breaking the cover 130 from the band body 110 to completely separate the cover from the band body, or as shown in FIG. By separating it, the electrical connection between the flexible battery 10 and the first terminal may be short-circuited.

To this end, the breaking part 150 may be formed between the cover 130 and the band body 110 as shown in FIG. 4 . In more detail, the breakable part 150 of the present invention may include a first breakable line part 151 , a second breakable line part 153 , and a third breakable line part 155 .

Referring to Figure 4, the first breaking line portion 151 may be formed on the upper surface side of the band body adjacent to the one end (110a) side of the band body. In addition, the first breaking line portion 151 may be disposed adjacent to the connection terminal 27 of the flexible battery 10 and may be formed in parallel with a corner portion formed at one end 110a of the band body.

Referring to FIGS. 1 and 4 , one end of a pair of second breaking line parts 153 extending in the long axis direction of the band body 110 may be connected to both ends of the first breaking line part 151 . At this time, the pair of second breaking line portions 153 may be formed on the upper surface of the band body 110 in parallel in the longitudinal direction of the band body, or may be respectively formed on both sides of the band body.

On the other hand, the other end of the pair of second breaking line parts 153 may include a third breaking line part 155 for connecting the pair of second breaking line parts to each other. The third breaking line portion 155 is positioned to face the first breaking line portion 151 and may be formed on the other end side of the upper surface of the band body 110 or the other end side in the extension direction of the band body. That is, the pair of second breaking line portions may be formed in a major axis direction of the band body, and the first breaking portion and third breaking line portions may be formed in a minor axis direction.

At this time, when the third breaking line part 155 is formed on the upper surface of the band body as the opposite side of the other side of the upper surface of the band body 110, for example, the first breaking line part 151 is formed on the upper surface of the band body, the cover 130 is It may be formed as a part of the upper surface of the band body 110 .

In addition, as shown in FIG. 4 , the third breaking line part 155 is connected to the band body 110 and integrated, and the first breaking line part 151 and the pair of second breaking line parts 152 are the band body. With a short circuit is possible, when formed at the end of the band body as an opposite part of the band body, the cover 130 may be formed on the entire upper surface of the band body 110 .

Through this, the cover 130 of the present invention may be separated from the band body 110 to electrically short-circuit the connection terminal 27 and the first terminal 111 of the flexible battery 10 .

Meanwhile, referring to FIGS. 5A to 5E , a portion of the periphery of the cover 130 in which the breakable part 150 is formed may be formed to have a thinner thickness than the cover to be easily broken by an external force.

In addition, the breaking part 150 may be formed between the cover 130 and the band body 110 to connect between the cover and the band body. On the other hand, when an external force is applied to the cover 130 , the thin breaking part 150 is broken, thereby shorting the electrical connection between the connection terminal 27 and the first terminal 111 of the flexible battery 10 .

1 and 3, in the present invention, the cover 130 further includes a handle portion 170 to easily separate the cover disposed in the receiving portion 113 of the band body 110 from the band body. can

At this time, the handle 170 is located on the upper surface of the cover 130 and may be formed in the shape of a protrusion 171 or a groove 173, but is not limited thereto. The handle 170 may be formed in any shape as long as the user manually separates the cover 130 from the band body 110 so that external force can be transmitted to the cover.

On the other hand, referring to FIGS. 1 and 3 , both ends of the band body 110 of the present invention may be formed to be separated or coupled to each other, but the present invention is not limited thereto, and both ends of the band body may be combined. have.

Hereinafter, the flexible battery 10 applied to the inside of the band 100 of FIGS. 1 to 9 will be described with reference to FIGS. 10 to 16 .

10 and 11 , the flexible battery 10 according to an embodiment of the present invention may include an electrode assembly and a casing 30 .

The electrode assembly is sealed together with the electrolyte inside the exterior material 30 , and may have a form in which a separator 26 is formed between the positive electrode 22 and the negative electrode 24 .

The positive electrode 22 includes a positive electrode current collector 22a and a positive electrode active material 22b, the negative electrode 24 includes a negative electrode current collector 24a and a negative electrode active material 24b, and the positive or negative electrode is a separator 26 It can be sealed with the separation membrane 26 and integrated.

Here, the negative electrode current collector 24a and the positive electrode current collector 22a may each have a negative electrode terminal 28a and a positive electrode terminal 28b respectively extending in the longitudinal direction.

In this case, the separator 26 may include a nonwoven fabric layer 26a and a nanofiber web layer 26b containing polyacrylonitrile nanofibers laminated on one or both surfaces of the nonwoven layer.

Here, the nanofiber web layer 26b may be a nanofiber containing at least one selected from polyacrylonitrile nanofibers and polyvinylidene fluoride nanofibers.

Preferably, the nanofiber web layer 26b may be formed of only polyacrylnitrile nanofibers to ensure spinning and uniform pore formation. And, the polyacrylonitrile nanofibers of the nanofiber web layer 26b may have an average diameter of 0.1 μm to 2 μm, preferably 0.1 μm to 1.0 μm.

If the average diameter of the nanofibers is less than 0.1 μm, the separator 26 may not have sufficient heat resistance. If it exceeds 2 μm, the mechanical strength of the separator is excellent, but the elasticity of the separator may be rather reduced Because.

In addition, the nonwoven fabric constituting the nonwoven fabric layer 26a includes cellulose, cellulose acetate, polyvinyl alcohol (PVA), polysulfone, polyimide, polyetherimide, and polyamide. ), polyethylene oxide (PEO, polyethylene oxide), polyethylene (PE, polyethylene), polypropylene (PP, polypropylene), polyethylene terephthalate (PET, polyethylene terephthalate), polyurethane (PU, polyurethane), polymethyl methacrylate ( At least one selected from PMMA, poly methylmethacrylate) and polyacrylonitrile may be used.

Here, the nonwoven fabric layer may further include an inorganic additive, wherein the inorganic additive is SiO, SnO, SnO ₂ , PbO ₂ , ZnO, P ₂ O ₅ , CuO, MoO, V ₂ O ₅ , B ₂ O ₃ , Si ₃ N ₄ , CeO ₂ , Mn ₃ O ₄ , Sn ₂ P ₂ O ₇ , Sn ₂ B ₂ O ₅ , Sn ₂ BPO ₆ , TiO ₂ , BaTiO ₃ , Li ₂ O, LiF, LiOH, Li ₃ N, BaO , Na ₂ O, Li ₂ CO ₃ , CaCO ₃ , LiAlO ₂ , SiO ₂ , Al ₂ O ₃ and PTFE may be included.

And, the inorganic particles, which are inorganic additives, may have an average particle diameter of 10 nm to 50 nm, preferably 10 nm to 30 nm, and more preferably 10 nm to 20 nm.

In addition, the average thickness of the separator 26 may be 10 μm to 100 μm, preferably 10 to 50 μm.

This is, if the average thickness of the separator 26 is less than 10 μm, the separator is too thin to ensure long-term durability of the separator due to repeated bending and/or unfolding of the battery. It is unfavorable to this, so it is better to have an average thickness within the range.

And, the nonwoven fabric layer 26a is formed to have an average thickness of 10 μm to 30 μm, preferably 15 to 30 μm, and the nanofiber web layer preferably has an average thickness of 1 μm to 5 μm.

The positive electrode current collector 22a and/or the negative electrode current collector 24a may be made of a thin metal foil, formed in a band shape having a predetermined length, copper, aluminum, stainless steel, nickel, titanium, chromium, manganese, iron , cobalt, zinc, molybdenum, tungsten, silver, gold, and a combination thereof may be made of a metal foil.

The cathode active material 22b includes a cathode active material capable of reversibly intercalating and deintercalating lithium ions, and representative examples of such a cathode active material include LiCoO ₂ , LiNiO ₂ , LiMnO ₂ , LiMn ₂ O ₄ , or Lithium-transition metals such as LiNi _{1 -xy} Co _x M _y O ₂ (0 ≤ x ≤1, 0 ≤y ≤ 1, 0 ≤ x+y ≤ 1, M is a metal such as Al, Sr, Mg, La, etc.) Oxides may be used. However, in the present invention, it is of course possible to use other types of positive electrode active materials in addition to the positive electrode active material.

In addition, the negative electrode active material 24b includes a negative electrode active material capable of intercalating and deintercalating lithium ions, and the negative active material includes crystalline or amorphous carbon, carbon fiber, or carbon-based negative electrode active material of a carbon composite. , tin oxide, lithiated ones thereof, lithium, lithium alloys, and mixtures thereof. However, the present invention is not limited to the type of the anode active material.

On the other hand, the positive electrode active material 22b and the negative electrode active material 24b prevent peeling from the positive electrode current collector 22a or the negative electrode current collector 24a and prevent cracking of the positive electrode active material layer and the negative electrode active material layer. Polytetrafluoroethylene (PTFE) component may contain.

The exterior material 30 is made of a plate-shaped member having a predetermined area, and serves to protect the electrode assembly from external force by accommodating the electrode assembly and the electrolyte therein.

To this end, the exterior material 30 is provided with a pair of the first exterior material 32 and the second exterior material 34, and is sealed with an adhesive along the edges to prevent the electrolyte and the electrode assembly accommodated therein from being exposed to the outside. and to prevent leakage to the outside.

The exterior material 30 may be formed of two members, and then the edge side facing each other may be sealed through an adhesive, and may be formed of a single member in the width direction or length Note that after being folded in half along the direction, the rest of the abutting parts may be sealed with adhesive.

At this time, the exterior material 30 is provided with a pattern 36 for contraction and relaxation when bending at least on one surface, and at least a portion of the pattern 36 is for facilitating contraction and relaxation in the twist direction of the exterior material 30 A pattern 36 is included.

That is, the pattern 36 is for contraction and relaxation in the longitudinal direction of the exterior material 30 during bending. In the pattern 36 , peaks and valleys may be repeatedly arranged along the longitudinal direction of the exterior material 30 .

Specifically, the peaks and valleys of the pattern 36 are formed parallel to a straight line parallel to the width direction of the exterior material 30 .

At this time, in the pattern 36, adjacent peaks and valleys may be formed in parallel with each other at the same distance, and the adjacent peaks or valleys may be formed in parallel at different intervals, and the same distance and different distances may be formed in parallel. The intervals may be provided in a combined form.

Accordingly, in the flexible battery 10 according to an embodiment of the present invention, contraction and relaxation in the longitudinal direction when bending is easily made through the pattern 36 .

Due to this, even when a repetitive load is applied during repetitive bending of the exterior material 30, fatigue applied to the exterior material 30 itself can be reduced, and the electrode assembly disposed inside the exterior material 30 also occurs during the bending operation. to be protected from the load.

In addition, the pattern formed on the exterior material 30 may be formed on the entire surface of the exterior material 30 or may be partially formed.

On the other hand, the electrode assembly may be provided in the form of a flexible plate, but similarly to the exterior material 30 , the same pattern as the pattern 36 formed on the exterior material 30 for contraction and relaxation during bending may be provided.

That is, the same pattern as the pattern formed on the exterior material 30 for contraction and relaxation when the positive electrode 22 , the negative electrode 24 and the separator 26 constituting the electrode assembly are bent may be provided.

Here, the pattern formed on the electrode assembly is formed parallel to a straight line parallel to the width direction. At this time, it should be noted that as long as the pattern formed on the exterior material 30 and the pattern formed on the electrode assembly coincide with each other, it is ok.

In addition, as shown in FIGS. 13 to 16 , the pattern may be continuous or non-continuous with peaks and valleys, and cross-sectional shapes of peaks and valleys may include a straight pattern, a prism pattern, a semicircle pattern, a wavy pattern, a polygonal pattern, and They may be formed of one or more patterns selected from mixed patterns.

On the other hand, the above-described flexible battery 10 serves to supply power to the band body (110 in FIG. 1), and serves as an auxiliary battery to support the main battery provided in the band body 110. However, it can also be used as the main battery of the band body (110).

When the flexible battery built in the band 100 for wearable electronic devices of the present invention is overheated, the flexible battery can be quickly removed from the band.

Although one embodiment of the present invention has been described above, the spirit of the present invention is not limited to the embodiments presented herein, and those skilled in the art who understand the spirit of the present invention can add components within the scope of the same spirit. , changes, deletions, additions, etc. may easily suggest other embodiments, but this will also fall within the scope of the present invention.

100: band for wearable electronic devices 110: band body 110a: one end of the band body
111: first terminal 113: receiving part 130: cover
131: band 150: break part 151: first break line part
153: second broken line portion 155: third broken line portion 165: inner side of cover
166: inner lower surface of the cover 167: inner surface of the cover 170: handle portion
171: projection 173: groove 175: receiving portion inner side
176: receiving part inner upper surface 177: receiving part inner surface 190: coupling part
191: coupling member 193: corresponding coupling member 195: coupling projection
197: coupling groove 200: electronic device 210: information display unit
211: main body 211a: one end of the main body 213: second terminal
300: thermoplastic resin adhesive layer 310: first adhesive layer

Claims (25)

A band for wearable electronic devices, comprising a band body,
The band body is a thermoplastic resin adhesive layer; a first terminal; a accommodating part in which the flexible battery can be accommodated; a cover coupled to the upper portion of the receiving unit; and a flexible battery;
The thermoplastic resin adhesive layer is formed between the inner surface of the receiving portion and the inner surface of the cover, or is formed between the inner surface of the receiving portion and the inner surface of the cover and the lower surface of the flexible battery,
The flexible battery includes an exterior material, an electrode assembly, and an electrolyte, the exterior material and the electrode assembly are provided with a pattern for contraction and relaxation during bending, and the pattern of the exterior material and the electrode assembly is provided to have a pattern that matches each other A band for wearable electronic devices.
The band for wearable electronic devices according to claim 1, wherein the thermoplastic resin adhesive layer has a melting point of 65°C to 80°C and a curing temperature of 60°C or less.
The band for wearable electronic devices according to claim 1, wherein the thermoplastic resin adhesive layer has a difference in tensile shear adhesive strength under 30°C to 60°C and tensile shear adhesive strength under 65°C to 80°C of 40 to 200 Mpa.
According to claim 1,
A part of the flexible battery is built into the cover so that the cover and a part of the flexible battery are integrated, or
A portion of the flexible battery is integrated through a first adhesive layer formed between the inner lower end surface of the cover and a portion of the flexible battery, and the first adhesive layer is formed of a thermoplastic resin adhesive or thermosetting resin adhesive having a melting point of 100° C. or higher. A band for wearable electronic devices.
an information display unit on which at least one piece of information is displayed on one side and a second terminal is formed on one side; and
An electronic device comprising a; the band for wearable electronic devices according to any one of claims 1 to 4, which is coupled to the information display unit and has a first terminal coupled to the second terminal.
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