KR102312799B1 - Electronic apparatus - Google Patents

Abstract

Electronic devices are provided. An electronic device according to an exemplary embodiment of the present invention includes at least one piece of information displayed on one surface and a main body having a first terminal for electrical connection; a band part connected to the body so that the user can wear the body on the body; and an auxiliary battery having a built-in flexible battery unit and detachably coupled to the band unit, the auxiliary battery having a second terminal electrically connected to the first terminal when coupled to the band unit, wherein the auxiliary battery is made of a flexible material a body formed; at least one guide bent from the body so that one surface of the band part faces one surface of the body and wraps the other surface of the band part through sliding coupling; and a flexible battery unit built into the body, wherein the flexible battery is a plate-shaped flexible battery having a predetermined length in which a flexible plate-shaped electrode assembly is encapsulated in an exterior material together with an electrolyte.

Description

Electronic apparatus

The present invention relates to an electronic device.

In general, a smart phone 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 that 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, it is inconvenient to take 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 that I cannot receive incoming calls and messages.

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

Examples of 'band-type mobile terminals' worn like clothes or accessories have been suggested, and smart devices in the form of wristwatches worn on the wrist or arm are being released. A wristwatch-type smart device (aka 'smart watch') is small and light, so it can be worn on the wrist at all times to check incoming calls or 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. .

Korean Patent Publication No. 2014-0108509 (published on September 11, 2014)

An object of the present invention is to provide an electronic device capable of supplying power to the main body of the electronic device during outdoor activities by means of a portable auxiliary battery having a built-in flexible battery.

In order to solve the above problems, the present invention provides at least one piece of information displayed on one surface, the main body having a first terminal for electrical connection; a band part connected to the body so that the user can wear the body on the body; and an auxiliary battery having a built-in flexible battery unit and detachably coupled to the band unit, the auxiliary battery having a second terminal electrically connected to the first terminal when coupled to the band unit, wherein the auxiliary battery is made of a flexible material a body formed; at least one guide bent from the body so that one surface of the band part faces one surface of the body and wraps the other surface of the band part through sliding coupling; and a flexible battery unit embedded in the body, wherein the flexible battery is a plate-shaped flexible battery having a predetermined length in which the flexible plate-shaped electrode assembly is sealed inside the exterior material together with the electrolyte. .

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In addition, the guide may be formed in a pair on both sides of the body.

In addition, the present invention includes at least one piece of information displayed on one surface, the main body having a first terminal for electrical connection; a band part connected to the body so that the user can wear the body on the body; and an auxiliary battery having a built-in flexible battery unit and detachably coupled to the band unit, the auxiliary battery having a second terminal electrically connected to the first terminal when coupled to the band unit, wherein the auxiliary battery is made of a flexible material It includes a body formed, a coupling member formed on one surface of the body facing one surface of the band portion when combined with the band portion, and a flexible battery portion built into the body, wherein the band portion is coupled to the body when combined with the body. a corresponding coupling member formed so as to be engageable with the coupling member on one surface facing the one surface of the body on which the member is formed, wherein the body is detachably coupled to the band portion through the coupling of the coupling member and the corresponding coupling member, the The flexible battery provides an electronic device that is a plate-shaped flexible battery having a predetermined length in which a plate-shaped electrode assembly having flexibility is encapsulated together with an electrolyte in the interior of the case.

In addition, the body may be formed in the form of a band having a width corresponding to that of the band and extending in the longitudinal direction of the band.

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In addition, it is formed on one end of the main body, the first terminal is formed on one side of the outer surface of the terminal coupling portion; and a terminal coupling groove formed at one end of the auxiliary battery and having a second terminal in contact with the first terminal in a state coupled to the terminal coupling part on one side of the inner surface.

In addition, a fastening member may be provided on the outer surface of the terminal coupling portion, and a corresponding fastening member capable of being coupled to the fastening member may be provided on the outer surface of the terminal coupling groove.

In addition, a sealing portion for sealing the contact portion between the terminal coupling portion and the terminal coupling groove may be formed on the outer periphery of the terminal coupling groove to prevent foreign matter from flowing into the terminal coupling groove while the auxiliary battery is coupled to the coupling portion.

In addition, the sealing portion may be formed of a ring-shaped member of an elastic material coupled to the outer periphery of the opening of the terminal coupling groove.

In addition, the flexible battery unit includes a pattern formed on the exterior material such that peaks and valleys are repeatedly arranged along the longitudinal direction of the exterior material for contraction and relaxation during bending, and the peaks and valleys of the pattern formed on the exterior material. The electrode assembly may further include a pattern formed on the electrode assembly such that the ridges and valleys are repeatedly arranged along the longitudinal direction of the electrode assembly.

In addition, the electrode assembly includes a positive electrode having a positive electrode active material layer disposed on one 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 or both sides of the negative electrode current collector, and the positive electrode, the negative electrode and the separator are banded For contraction and relaxation, the same pattern as the pattern of the exterior material may be provided.

In addition, the separator may include a non-woven fabric layer; And it may include a nanofiber web layer containing polyacrylonitrile (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 moire pattern, a polygonal pattern, an embossing pattern, and a mixture thereof.

In the electronic device according to an embodiment of the present invention, a body coupling part for coupling to the band part is formed on the body of the auxiliary battery, so that when the use of power of the main body is completed, the auxiliary battery can be coupled to the band part using the body coupling part, so that the main body You can supply power to the device or charge the main battery of the body.

1 is a perspective view illustrating an electronic device according to an embodiment of the present invention.
2A and 2B are perspective views illustrating an auxiliary battery of an electronic magnetic device according to an embodiment of the present invention.
3 is a cross-sectional view illustrating a state in which an auxiliary battery according to an embodiment of the present invention is coupled to an electronic device.
4 is a perspective view illustrating an electronic device according to another embodiment of the present invention.
5 is a perspective view illustrating an auxiliary battery of an electronic magnetic device according to another embodiment of the present invention.
6 is a cross-sectional view illustrating a state in which an auxiliary battery unit is coupled to an electronic device according to another embodiment of the present invention.
7 is a view showing a flexible battery unit used in an electronic device according to the present invention.
8 is an enlarged cross-sectional view showing the detailed configuration of the flexible battery unit used in the electronic device of the present invention.
9 is an overall perspective view showing various patterns applied to the electrode assembly and the exterior material in the flexible battery unit used in the electronic device of the present invention.
10 to 13 are schematic views showing various types of patterns in the flexible battery used in the electronic device 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.

As shown in FIG. 1 , the electronic device 100 according to the present invention may include a main body 110 , a band unit 120 , and an auxiliary battery 130 .

The main body 110 is provided with a circuit board (not shown) therein, and various information transmitted from the circuit board is displayed on the display unit provided on one surface, so that the user can check the necessary information through the display unit.

Here, the main body may be a smart watch, and may be a display on which an image such as a small DMB or PDP is displayed. The main body may be applied to any electrical device capable of displaying various characters, numbers, and images on the display unit through electrical signals.

Also, the main body 110 may display the contents of the portable device and the electronic device through short-distance communication with the portable device and the electronic device.

As the auxiliary battery 130 is fastened to one side of the main body 110 , a terminal coupling unit 112 for electrical connection with the flexible battery unit 10 built into the auxiliary battery 130 may be formed.

At this time, the terminal coupling part 112 may be provided such that at least a pair of first terminals 114 are exposed to the outside, and when the auxiliary battery 130 is fastened, the pair of second terminals provided in the auxiliary battery 130 . The terminals 138 (see FIGS. 2A and 2B ) may be electrically connected by being in contact with each other.

In addition, a fastening member (not shown) may be provided on the outer surface of the terminal coupling part 112 , and the fastening member (not shown) may further strengthen the coupling with the auxiliary battery 130 to be described later.

In detail, the first terminal 114 may be formed on any one of the top surface, the bottom surface, and both sides of the terminal coupling part 112 .

In addition, one first terminal of the pair of first terminals 114 may be a negative electrode, and the other first terminal may be a positive electrode.

The band unit 120 may be coupled from both sides of the main body 110 so that the main body 110 can be worn on a part of the body, and may be made of leather or metal, and may be made of a flexible material. .

Auxiliary battery 130, as shown in Figures 2a and 2b, the body 132 and the body 132 positioned on one surface of the band portion 120, a body coupling portion 134 for coupling the body 132 to the band portion 120. ) may be included.

In this case, the body 132 may have a width corresponding to the band portion 120 , and may be formed in a band shape that may extend in the longitudinal direction of the band portion 120 .

In addition, the body 132 may be formed of a flexible material.

A flexible battery part 10 may be provided inside the body 132 , and a terminal coupling groove 136 into which the terminal coupling part 112 can be inserted and coupled may be provided at one side of the body 132 .

At this time, a second terminal 138 for electrically connecting the first terminal 114 and the flexible battery unit 10 to one side of the inner surface of the terminal coupling groove 136 may be provided, and in detail, the first terminal ( A pair of second terminals 138 may be provided on the inner surface of the terminal coupling groove 136 corresponding to the 114 .

In addition, one second terminal of the pair of second terminals 138 may be a negative electrode, and the other second terminal may be a positive electrode.

Accordingly, the terminal coupling part 112 is inserted and coupled into the terminal coupling groove 136 , and at the same time, the first terminal 114 and the second terminal 138 are electrically connected, so that the main body 110 and the auxiliary battery 130 are electrically connected. ) can be electrically connected.

In addition, a corresponding fastening member 139 capable of being fastened to a fastening member (not shown) formed in the terminal coupling part 112 may be provided on the outer surface of the terminal coupling groove 136 .

Here, the terminal coupling part 112 may be detachable from the terminal coupling groove 136 of the auxiliary battery 130 , and specifically, the coupling member (not shown) and the corresponding coupling member 139 are coupled in an interference fit coupling method. It can be, or it can be coupled by a hook coupling method, or can be coupled using magnetism, and any configuration can be freely configured as long as the main body 110 and the auxiliary battery 130 can be firmly coupled to each other. have.

In addition, in the outer periphery of the terminal coupling groove 136 , the terminal coupling part 112 and the terminal coupling part 112 and the terminal coupling part 112 are prevented from entering the terminal coupling groove 136 in a state in which the auxiliary battery 130 is coupled to the terminal coupling part 112 . A sealing portion 137 for sealing the contact portion between the grooves 136 may be formed.

Here, the sealing part 137 is made of a ring-shaped member coupled to the outer periphery of the opening of the terminal coupling groove 136, and the ring-shaped member may be formed of an elastic material.

The body coupling part 134 is for coupling the band part 120 and the body 132, and the body coupling part 134 may be a guide to which the band part 120 can be slidably coupled, as shown in FIG. 2a. Similarly, the body coupling part 134 may extend from one side of the body 132 and be bent to surround the other side of the band part 120 .

Alternatively, as shown in FIG. 2B , the body coupling portion 134 ′ may be a pair of guides extending from both sides of the body 132 , and in this case, each of the pair of guides is a portion of the other surface of the band portion 120 . It may be formed by bending at both sides of the body 132 to surround it.

Accordingly, when the band unit 120 and the auxiliary battery 130 are coupled, the band unit 120 may be coupled by sliding into the body coupling units 134 and 134 ′.

In addition, the auxiliary battery 130 may further include a holding member 140 .

The holding member 140 is for maintaining the shape of the auxiliary battery 130 as shown in FIGS. 2A and 2B , and may be coupled to the body coupling portions 134 and 134 ′. The holding member 140 is a bar-shaped structure that can be coupled to the body coupling parts 134 and 134', and can be formed of a rigid member made of plastic or metal that can maintain its shape.

Specifically, when the auxiliary battery 130 is separated from the band unit 120 , the shape of the auxiliary battery 130 made of a flexible material may be deformed.

Accordingly, since the holding member 140 is inserted and coupled to the body coupling portions 134 and 134 ′, the shape of the auxiliary battery 130 may be maintained by the holding member 140 .

In addition, when the auxiliary battery 130 is used, the holding member 140 is taken out from the body coupling parts 134 and 134', and then the band 120 can be inserted into the body coupling parts 134 and 134'. have.

Therefore, when the use of power of the main body 110 is completed, the band unit 120 is inserted into the body coupling parts 134 and 134 ′ of the auxiliary battery 130 and coupled thereto, and then, as shown in FIG. 3 , the body 132 . By coupling the second terminal 138 of the terminal coupling groove 136 formed on one side of the body 110 with the first terminal 114 formed in the terminal coupling portion 112 of the body 110, power is supplied to the body 110. You can supply or charge the main battery of the body.

An electronic device according to another embodiment of the present invention will be described with reference to FIGS. 4 to 6 .

The electronic device 200 of another embodiment of the present invention according to FIG. 4 may include a main body 210, a band part 220, and an auxiliary battery 230, and the body of the auxiliary battery 230 as compared with FIG. There is a difference in the configuration of the coupling portion 234 . Here, since the main body 210 and the band part 220 of the electronic device 200 according to another embodiment of the present invention are the same as those of FIG. 1 , a detailed description thereof will be omitted.

As shown in FIGS. 4 and 5 , the auxiliary battery 230 has a body 232 positioned on one surface of the band 220 and a body coupling part 234 for coupling the body 232 to the band part 220 . ) may be included.

In this case, the body 232 may have a width corresponding to the band portion 220 and may be formed in a band shape that may extend in the longitudinal direction of the band portion 220 .

In addition, the body 232 may be formed of a flexible material.

The flexible battery part 10 may be provided inside the body 232 , and a terminal coupling groove 236 into which the terminal coupling part 212 can be inserted and coupled may be provided at one side of the body 232 .

At this time, a second terminal 238 for electrically connecting the first terminal 214 and the flexible battery unit 10 may be provided on one side of the inner surface of the terminal coupling groove 236, and in detail, the first terminal ( 214 , the second terminal 238 may be provided as a pair inside the terminal coupling groove 236 .

In addition, one second terminal of the pair of second terminals 238 may be a negative electrode, and the other second terminal may be a positive electrode.

Accordingly, the terminal coupling part 212 is inserted and coupled into the terminal coupling groove 236 , and at the same time, the first terminal 214 and the second terminal 238 are electrically connected, so that the main body 210 and the auxiliary battery 230 are connected. ) can be electrically connected.

In addition, a corresponding fastening member 239 capable of being fastened to a fastening member (not shown) formed in the terminal coupling part 212 may be provided on the outer surface of the terminal coupling groove 236 .

Here, the terminal coupling part 212 of the main body 210 may be detachable from the terminal coupling groove 236 of the auxiliary battery 230 , and specifically, the coupling member (not shown) and the corresponding coupling member 239 are restrained. It may be coupled in a fitting coupling method, or may be coupled in a hook coupling method, or may be coupled using magnetism, and any configuration may be provided in which the main body 210 and the auxiliary battery 230 can be firmly coupled to each other. can be freely configured.

The body coupling part 234 is for coupling the band part 220 and the body 232, the coupling member 234a formed on the body 232, and the band part 220 are formed to combine with the coupling member 234a. It may include a possible corresponding coupling member (234b).

In this case, the coupling member 234a may be Velcro, metal, magnet, tick button, etc., and the corresponding coupling member 234b may be Velcro, magnet, metal, tick button and the like.

In addition, the coupling member (234a) and the corresponding coupling member (234b) may be used as an attachment member in addition to the above-described configuration, any configuration may be used as long as the body 232 is a configuration that can be coupled to the band portion (220).

In addition, the auxiliary battery 230 may further include a holding member 240 .

The holding member 240 is for maintaining the shape of the auxiliary battery 230, and may be coupled to the coupling member 234a provided on one side of the body 232, and at one side of the holding member 240, the coupling member ( A retaining coupling member 242 coupled to 234a may be provided.

Retaining coupling member 242 may also be provided with Velcro, magnet, metal, snap button, etc. to correspond to the material of the coupling member 234a of the body 232 .

Also, when the auxiliary battery 230 is separated from the band unit 220 , the shape of the auxiliary battery 230 made of a flexible material may be deformed.

Accordingly, the holding and coupling member 242 of the holding member 240 is coupled to the coupling member 234a of the body coupling portion 234 , thereby maintaining the shape of the auxiliary battery 230 by the holding member 240 . .

In addition, in the case of using the auxiliary battery 230, the holding member 242 of the holding member 240 is removed from the coupling member 234a of the body coupling part 234, and then the coupling member 234a is attached to the band part. It can be attached to the corresponding coupling member (234b) provided in 220.

Therefore, when the use of the power of the main body 210 is completed, after attaching the coupling member 234a of the auxiliary battery 230 to the corresponding coupling member 234b of the band unit 220 and coupling it, as shown in FIG. , By coupling the second terminal 238 of the terminal coupling groove 236 formed on one side of the body 232 with the first terminal 214 formed in the terminal coupling portion 212 of the body 210, the body ( 210) or to charge the main battery of the body.

On the other hand, as shown in FIGS. 1 to 6 , the bodies 132 and 232 of the auxiliary batteries 130 and 230 are shown and described as being formed in a band shape of a flexible material, but the present invention is limited thereto. no. Specifically, the auxiliary batteries 130 and 230 are a band shape of a flexible material so as to be coupled to the entire band unit 120, 220, or a shape that can be coupled to one side of the band unit 120, 220, or A rigid material may be formed to be coupled to a portion of the adjacent band portions 120 and 220 of the main bodies 110 and 210 .

That is, any auxiliary battery having a configuration capable of supplying power to the main body 110 or charging the main battery of the main body after the use of power of the main body 110 is completed may be manufactured in any shape.

Next, the flexible battery unit 10 applied inside the auxiliary batteries 130 and 230 of FIGS. 1 to 6 will be described with reference to FIGS. 7 to 13 .

7 and 8 , the flexible battery unit 10 used in the present invention includes an electrode assembly 20 and a casing 30 .

The electrode assembly 20 is sealed together with the electrolyte inside the casing 30 , and may have a form in which a separator 26 is formed between the anode 22 and the cathode 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 from the body.

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

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

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

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

In addition, the non-woven fabric constituting the non-woven fabric layer is cellulose, cellulose acetate, polyvinyl alcohol (PVA, polyvinyl alcohol), polysulfone, polyimide, polyetherimide, polyamide, polyethylene Oxide (PEO, polyethylene oxide), polyethylene (PE, polyethylene), polypropylene (PP, polypropylene), polyethylene terephthalate (PET, polyethylene terephthalate), polyurethane (PU, polyurethane), polymethyl methacrylate (PMMA, poly At least one selected from 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 may include one or more selected from PTFE.

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

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

This is because, if the average thickness of the separator 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 good to have an average thickness within the range.

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

The positive electrode current collector and/or the negative electrode current collector 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 includes a cathode active material capable of reversibly intercalating and deintercalating lithium ions. Representative examples of such a cathode active material include LiCoO ₂ , LiNiO ₂ , LiMnO ₂ , LiMn ₂ O ₄ , or LiNi _{1- A} lithium-transition metal oxide such as 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) may be used. can 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 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 carbon composite, tin oxide. , it may be selected from the group consisting of lithiated ones, 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 and the negative electrode active material may contain a PTFE (Polytetrafluoroethylene) component to prevent peeling from the positive electrode current collector or the negative electrode current collector, and to prevent cracks in the positive electrode active material layer and the negative electrode active material.

The exterior material 30 is made of a plate-shaped member having a predetermined area, and serves to protect the electrode assembly 20 from external force by accommodating the electrode assembly 20 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 through an adhesive along the edge, whereby the electrolyte and the electrode assembly 20 accommodated therein are exposed to the outside. and 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, at least one surface of the exterior material 30 is provided with a pattern 36 for contraction and relaxation when bending, 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 unit 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 .

For this reason, 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 as well as the electrode assembly 20 disposed inside the exterior material 30 is also bent. It can be protected from the load generated during work.

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 20 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. have.

That is, the same pattern as the pattern 36 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 20 are bent may be provided. have.

Here, the pattern 28 formed on the electrode assembly 20 is formed parallel to a straight line parallel to the width direction as shown in FIG. 9 . At this time, it should be noted that as long as the pattern 36 formed on the exterior material 30 and the pattern 28 formed on the electrode assembly 20 coincide with each other, it is ok.

In addition, the patterns 36 and 28 may have continuous or non-continuous peaks and valleys as shown in FIGS. 10 to 13 , and cross-sectional shapes of the peaks and valleys are linear patterns, prism patterns, semicircular patterns, and wavy patterns. It may be formed of one or more patterns selected from a pattern, a polygonal pattern, and a mixed pattern thereof.

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

Accordingly, the body of the auxiliary battery is formed with a body coupling part for coupling to the band, so that when the power supply of the body is completed, the auxiliary battery can be coupled to the band using the body coupling part to supply power to the body or the main battery of the body. can be charged.

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. will be able to easily suggest other embodiments, but this will also fall within the scope of the present invention.

100, 200: electronic device 110, 210: main body
120, 220: band 130, 230: auxiliary battery
132, 232: body 134, 234: body coupling part
136, 236: terminal coupling groove 138, 238: second terminal
139, 239: corresponding fastening member 140, 240: holding member

Claims (15)

delete At least one piece of information is displayed on one surface, the main body having a first terminal for electrical connection;
a band part connected to the body so that a user can wear the body on the body; and
An auxiliary battery having a built-in flexible battery part and detachably coupled to the band part, and having a second terminal electrically connected to the first terminal when combined with the band part;
The auxiliary battery is
a body formed of a flexible material;
at least one guide bent from the body so that one surface of the band part faces the one surface of the body through sliding coupling and wraps the other surface of the band part; and
and a flexible battery unit built into the body.
The flexible battery is
An electronic device that is a plate-shaped flexible battery having a predetermined length in which a plate-shaped electrode assembly having flexibility is encapsulated inside an exterior material together with an electrolyte. At least one piece of information is displayed on one surface, the main body having a first terminal for electrical connection;
a band part connected to the body so that a user can wear the body on the body; and
An auxiliary battery having a built-in flexible battery part and detachably coupled to the band part, and having a second terminal electrically connected to the first terminal when combined with the band part;
The auxiliary battery is
A body formed of a flexible material, a coupling member formed on one surface of the body facing one surface of the band portion when combined with the band portion, and a flexible battery unit built into the body,
The band portion includes a corresponding coupling member formed to be engageable with the coupling member on one surface facing the one surface of the body on which the coupling member is formed when coupled with the body,
The body is detachably coupled to the band portion through the coupling of the coupling member and the corresponding coupling member,
The flexible battery is
An electronic device that is a plate-shaped flexible battery having a predetermined length in which a plate-shaped electrode assembly having flexibility is encapsulated inside an exterior material together with an electrolyte. 4. The method of claim 2 or 3,
The main body further includes a terminal coupling portion provided at one side of the main body so that the first terminal is exposed to the outside;
The auxiliary battery further includes a terminal coupling groove provided with the second terminal on an inner surface such that the terminal coupling part is inserted into the band and the auxiliary battery is coupled to the second terminal so that the second terminal is in contact with the first terminal. electronic devices that do. 4. The method of claim 2 or 3,
The flexible battery unit,
The pattern formed on the exterior material so that the peaks and valleys are repeatedly arranged along the longitudinal direction of the exterior material for contraction and relaxation during bending, and the peaks and valleys of the pattern formed on the exterior material, respectively, in the longitudinal direction of the electrode assembly The electronic device further comprising a pattern formed on the electrode assembly so that the peaks and valleys are repeatedly arranged along the.
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