KR102353594B1 - Wearable device - Google Patents

Abstract

A wearable device is provided. A wearable device according to an exemplary embodiment of the present invention includes a functional unit having a first terminal unit; and a band part having a receiving part on which the functional part is seated is formed in the center, and a flexible battery provided therein, wherein the receiving part is provided with a guide part forming a side wall corresponding to the shape of the functional part, and the guide part is provided on one side of the guide part. A second terminal portion electrically connected to the first terminal portion is provided. According to the present invention, by providing the connection portion of the functional portion and the band portion in the side wall of the receiving portion, there is an advantage in that it is possible to prevent oxidation or leakage of electricity through the input of foreign substances.

Description

Wearable device {WEARABLE DEVICE}

The present invention relates to a wearable device, and more particularly, to a wrist wearable device such as a smart watch.

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 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. 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 functional part, the conventional band-type mobile terminal has a disadvantage in that the use time is short because the amount of power supply is limited, and it is very cumbersome to charge when all the power is consumed during outdoor activities. There was a problem.

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

It is an object of the present invention to provide a wearable device capable of extending the use time by having a battery part built-in in the band part and power is supplied to the functional part side through the battery part of the band part.

In addition, an object of the present invention is to provide a wearable device capable of preventing the connection between the functional part and the band part from being oxidized by the input of foreign substances such as moisture or sweat from the human body or leakage of electricity therethrough.

In order to solve the above problems, the present invention provides a functional unit having a first terminal unit; and a band portion in which a receiving portion on which the functional portion is seated is formed and a flexible battery is provided therein, wherein the accommodation portion includes: a guide portion forming a sidewall corresponding to the shape of the functional portion; and a second terminal part electrically connected to the first terminal part on one side of the guide part; is provided.

In addition, the guide part may be formed so that the elasticity of one side provided with the second terminal part is smaller than that of the other side facing the second terminal part.

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In addition, the second terminal part may be disposed in a groove formed on one side of the guide part, and the first terminal part may be disposed in a protrusion having a complementary shape to the groove part so as to be inserted into the groove part.

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In addition, the first terminal part may include a pair of protruding terminals, and the second terminal part may include a pair of grooved terminals having a complementary shape to the pair of protruding terminals.

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In addition, the flexible battery includes a casing material, an electrode assembly, and an electrolyte, the casing material and the electrode assembly are provided with patterns for contraction and relaxation during bending, and the patterns of the casing material and the electrode assembly may coincide with each other.

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The wearable device according to an embodiment of the present invention has an advantage in that the use time can be increased by having a battery part built-in in the band part and power is supplied to the body side through the battery part of the band part.

In addition, according to the present invention, the connection portion of the functional part and the band part is provided in the side wall of the receiving part, so that it is possible to prevent oxidation or leakage of electricity through the input of external foreign substances such as moisture or sweat of the human body.

1 is a perspective view schematically illustrating a wearable device according to an embodiment of the present invention.
2 is an exploded perspective view of a wearable device according to an embodiment of the present invention.
3 is a side cross-sectional view of a wearable device according to an embodiment of the present invention.
4 is a perspective view illustrating a connection state of a wearable device according to an embodiment of the present invention.
5 is a perspective view illustrating a connection state of a wearable device according to an embodiment of the present invention.
6 is a perspective view illustrating a flexible battery used in a wearable device according to an embodiment of the present invention.
7 is a plan view illustrating various patterns applied to an electrode assembly and an exterior material in a flexible battery used in a wearable device according to an embodiment of the present invention.
8 to 11 are schematic views showing various types of patterns of flexible batteries used in a wearable device according to an embodiment of the present invention.
12 is an enlarged cross-sectional view showing a detailed configuration of a flexible battery used in a wearable device according to an embodiment of the present invention.
13 is a state diagram of a wearable device according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those of ordinary skill in the art can easily carry out the present invention. 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 added to the same or similar elements throughout the specification.

Referring to FIG. 1 , a wearable device 10 according to an embodiment of the present invention includes a functional unit 100 and a band unit 200 .

The functional unit 100 may have a function of any portable electronic device, for example, a smart watch or health band, a small DMB, a display function such as a PDP may be provided with a display function.

In addition, one side of the functional unit 100 may be provided with a first terminal unit 110 as shown in FIGS. 2 to 5 . The first terminal part 110 may be disposed on a protrusion having a shape complementary to that of the groove part 206 so as to be inserted into the groove part 206 . Here, the first terminal part 110 may be formed to protrude to the outside, and may include a pair of terminals 112 . Here, the pair of terminals 112 may be a pair of protruding terminals. The first terminal unit 110 may receive power from the flexible battery 220 built in the band unit 200 and supply it to the circuit unit in the functional unit 100 .

As shown in FIG. 2 , the band part 200 has a receiving part 204 on which the functional part 100 is seated in the central part thereof, and a flexible battery 220 may be provided therein.

Here, the accommodating part 204 may be integrally formed with both sides of the band part 200 in which the flexible battery 220 is embedded. In addition, the accommodating part 204 may include a guide part 202 forming a side wall corresponding to the shape of the functional part 100 .

At this time, the guide part 202 is configured to have a large elasticity on one side provided with the second terminal part 210 so that the functional part 100 can be easily mounted, and the functional part 100 and the band part ( 200), the other side facing the second terminal part 210 may be configured to have less elasticity than the one side. That is, the guide part 202 may be configured such that one side 202a of the guide part 202 provided with the second terminal part 210 has less elasticity than the other side 202b of the guide part 202 .

To this end, one side 202a of the guide part 202 and the other side 202b of the guide part 202 may be made of a material having different elasticity. Alternatively, one side 202a of the guide part 202 provided with the second terminal part 210 may include a reinforcing member 203 therein to reduce elasticity.

As described above, one side 202a of the guide part 202 has a small elasticity to prevent the electrical wiring 230 provided therein from being disconnected by tension.

A second terminal part 210 electrically connected to the first terminal part 110 may be provided on one side 202a of the guide part 202 to face inward. Here, as shown in FIG. 4 , a groove portion 206 is formed on one side 202a of the guide portion 202 provided with the second terminal portion 210 , and the second terminal portion 210 has the groove portion. It may be provided at 206 .

In this case, the second terminal part 210 includes a pair of terminals 212 , wherein the pair of terminals 212 is a pair of groove-type terminals having a shape complementary to the pair of protrusion-type terminals 112 . can be The second terminal part 210 is connected to the first terminal part 110 through an electric wire 230 built in one side 202a of the guide part 202 .

As shown in FIGS. 4 and 5 , when the functional part 100 is mounted on the band part 200 , the first terminal part 110 of the functional part 100 is attached to the first terminal part of the accommodating part 204 . After being coupled to the two-terminal part 210 , the other side 202b of the elastic guide part 202 may be slightly bent to be completely inserted into the receiving part 204 . That is, as the other side 202b of the guide part 202 is elastically deformed, one side provided with the first terminal part 110 of the functional part 100 comes into contact with the second terminal part 210 of the receiving part 204 . In this state, the other side of the functional part 100 can be seated in the receiving part 204 .

At this time, since the first terminal part 110 and the second terminal part 210 are coupled within one side 202a of the guide part 202 as shown in FIG. It is possible to prevent oxidation or electrical leakage caused by foreign substances or the like. In addition, in a state in which the other side of the functional part 100 is seated in the receiving part 204 and a protrusion protruding from one side of the functional part 100 is inserted into the groove part 206 , the guide part 202 is The other side 202b is restored to the state before the elastic deformation. At this time, when the other side of the guide part 202 presses the other side of the functional part 100 , the first terminal part 110 formed at the tip of the protrusion part and the second terminal part formed inside the groove part 206 . The contact of 210 can be stably maintained. Due to this, it is possible to support the functional unit 100 only by the elasticity of the guide unit 202 without a separate configuration, thereby reducing the size of the wearable device and reducing the feeling of foreign body that the user using the wearable device feels when wearing the wearable device. there will be

In addition, when the functional part 100 is separated from the accommodating part 204, the other side 202b of the elastic guide part 202 is slightly bent to remove a part of the functional part 100 from the accommodating part ( 204 ), the first terminal part 110 of the functional part 100 may be separated from the second terminal part 210 of the guide part 202 .

The flexible battery 220 serves as a power source for supplying power to the functional unit 100 , and serves as an auxiliary power source to assist the main battery provided inside the functional unit 100 . However, it may also be used as the main power source of the functional unit 100 .

The flexible battery 220 includes an electrode assembly 223 and a casing 228 as shown in FIGS. 6 and 7 .

The electrode assembly 223 is sealed together with the electrolyte inside the casing 228 , and as shown in FIG. 12 , a separator 225 may be formed between the positive electrode 224 and the negative electrode 226 . .

The positive electrode 224 includes a positive electrode current collector 224a and a positive electrode active material 224b, the negative electrode 226 includes a negative electrode current collector 226a and a negative electrode active material 226b, and the positive electrode or the negative electrode includes the It may be sealed with the separation membrane 225 to be integrated with the separation membrane 225 .

Here, the negative electrode current collector 226a and the positive electrode current collector 224a may have a negative electrode terminal 227a and a positive electrode terminal 227b respectively extending from the body.

In this case, the separator 225 may include a nanofiber web layer 225b on one or both surfaces of the nonwoven fabric layer 225a.

Here, the nanofiber web layer 225b may be a nanofiber containing at least one selected from polyacrylonitrile nanofibers and polyvinylidene fluoride nanofibers.

And, the polyacrylonitrile nanofibers of the nanofiber web layer 225b 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 nonwoven fabric constituting the nonwoven fabric layer 225a is cellulose, cellulose acetate, polyvinyl alcohol (PVA, polyvinyl alcohol), polysulfone, polyimide, polyetherimide, polyamide ( 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 layer may further include an inorganic additive, and 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, It may include one or more selected from BaO, Na ₂ O, Li ₂ CO ₃ , CaCO ₃ , LiAlO ₂ , SiO ₂ , Al ₂ O _{3 and PTFE.}

And the inorganic particles as 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, and if it exceeds 100 μm, it is disadvantageous to thinning the flexible battery. It is preferable to have an average thickness within the above range.

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

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, It may be made of a metal foil made of molybdenum, tungsten, silver, gold, and combinations thereof.

The positive active material 224b includes a positive active material capable of reversibly intercalating and deintercalating lithium ions, and representative examples of the positive active material 224b include LiCoO ₂ , LiNiO ₂ , LiMnO ₂ , LiMn _{2 .} O ₄ , or 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) A lithium-transition metal oxide 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 active material 226b includes an anode active material capable of intercalating and deintercalating lithium ions, and the negative active material 226b includes crystalline or amorphous carbon, carbon fiber, or carbon of a carbon composite. It may be selected from the group consisting of a negative electrode active material, tin oxide, lithiated ones thereof, lithium, lithium alloys, and mixtures thereof. However, the present invention is not limited to the type of the negative active material.

On the other hand, the positive electrode active material 224b and the negative electrode active material 226b prevent peeling from the positive electrode current collector 224a or the negative electrode current collector 226a, and to prevent cracking of the positive electrode active material layer and the negative electrode active material layer, PTFE (Polytetrafluoroethylene) ) ingredients.

The exterior material 228 is made of a plate-shaped member having a predetermined area, and serves to protect the electrode assembly 223 from external force by accommodating the electrode assembly 223 and the electrolyte therein.

To this end, the casing 228 is provided with a pair of the first casing 228a and the second casing 222a, and the electrolyte and the electrode assembly 223 accommodated therein are sealed along the edges with an adhesive to the outside. to prevent leakage or exposure.

The exterior material 228 may be formed of two members, and then the rim side facing each other may be sealed through an adhesive, and may be formed of a single member in the width direction or It should be noted that after being folded in half along the length, the rest of the abutting parts may be sealed with adhesive.

At this time, the exterior material 228 may be provided in a flexible flat plate shape, but as shown in FIGS. 9 and 10 , a pattern 229a for contraction and relaxation during bending may be provided on at least one surface.

That is, the pattern 229a is for contraction and relaxation of the exterior material 228 in the longitudinal direction when bending. In the pattern 229a , peaks and valleys may be repeatedly arranged along the longitudinal direction of the exterior material 228 .

More specifically, the peaks and valleys of the pattern 229a are formed parallel to a straight line parallel to the width direction of the exterior material 228 .

At this time, as shown in FIG. 9 , in the pattern 229a, adjacent peaks and valleys may be formed in parallel with each other at the same distance, and adjacent peaks or valleys may be formed in parallel at different intervals. It may also be provided in the form of a combination of the same interval and different intervals.

Accordingly, in the flexible battery 120 according to an embodiment of the present invention, contraction and relaxation in the longitudinal direction when bending is easily made through the pattern 229a.

Due to this, even when a repetitive load is applied during the repetitive bending of the exterior material 228, the fatigue applied to the exterior material 228 itself can be reduced as well as the electrode assembly 223 disposed inside the exterior material 228. Also, it is possible to be protected from the load generated during the bending operation.

In addition, the pattern 229a formed on the exterior material 228 may be formed on the entire surface of the exterior material 228 or may be partially formed.

Meanwhile, the electrode assembly 223 may be provided in the form of a flexible plate, but similarly to the case 228 , the same pattern as the pattern 229a formed on the case 228 for contraction and relaxation during bending is used. can be provided.

That is, the positive electrode 224 , the negative electrode 226 , and the separator 225 constituting the electrode assembly 223 have the same pattern 229b as the pattern 229a formed on the exterior material 228 in order to contract and relax when bending. ) may be provided.

Here, the pattern 229b formed on the electrode assembly 223 is formed parallel to a straight line parallel to the width direction as shown in FIG. 9 . In this case, it should be noted that as long as the pattern 229a formed on the exterior material 228 and the pattern 229b formed on the electrode assembly 223 coincide with each other, it is ok.

In addition, as shown in FIGS. 8 to 11 , the patterns 229a and 229b may have continuous or discontinuous peaks and valleys, and cross-sectional shapes of the peaks and valleys are a straight pattern, a prism pattern, a semicircle pattern, and a wave. It may be formed of one or more patterns selected from a pattern pattern, a polygonal pattern, and a mixed pattern thereof.

As shown in FIG. 13 , the wearable device 10 according to an embodiment of the present invention configured as described above engages the band unit 200 with the functional unit 100 through the guide unit 102 .

In this state, it can be conveniently worn on the user's wrist through a separate fixing means (not shown) provided to correspond to each other in the band unit 200 .

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.

10: wearable device 100: functional part
110: first terminal part 112: protruding terminal
200: band part 202, 202a, 202b: guide part
204: accommodating part 206: groove part
210: second terminal portion 212: groove-type terminal
220: flexible battery 228: exterior material
228a: first exterior material 228b: second exterior material
229a, 229b: pattern

Claims (11)

a functional unit having a first terminal unit; and
It includes; a band part having a receiving part on which the functional part is seated, and a flexible battery provided therein;
The receiving unit,
a guide part forming a side wall corresponding to the shape of the functional part; and
and a second terminal part electrically connected to the first terminal part on one side of the guide part;
The guide unit,
In order for the other side of the functional part to be seated in the receiving part with one side provided with the first terminal part of the functional part in contact with the second terminal part, the other side facing the second terminal part of the guide part is elastically deformable. The elasticity of one side provided with the second terminal portion is formed to be smaller than the elasticity of the other side facing the second terminal portion,
The second terminal part is disposed in a recess formed in one side of the guide part,
The first terminal part is disposed on a protrusion of a shape complementary to the groove part so as to be inserted into the groove part,
The other side of the guide part facing the second terminal part elastically presses the other side of the functional part so that the protrusion part is inserted into the groove part. delete delete The method of claim 1,
The first terminal part,
including a pair of protruding terminals;
The second terminal part,
A wearable device comprising the pair of protrusion-type terminals and a pair of groove-type terminals having a complementary shape. According to claim 1, wherein the flexible battery,
It 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 when bending, and the pattern of the exterior material and the electrode assembly coincides with each other. delete delete delete delete delete delete

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