KR20160129501A - Bracelet type watch strap and wrist wearable type electronic apparatus having the same - Google Patents

Abstract

The present invention provides a bracelet type wrist strap. A bracelet type wrist strap according to an exemplary embodiment of the present invention comprises: a housing including a coupling part to which a main body of an electronic device is coupled; a flexible battery which is embedded in the housing and supplies a power supply toward the main body; and a support which supports an edge side of the flexible battery to prevent distortion of the flexible battery during bending of the watch strap. Therefore, a bracelet type wrist strap according to an exemplary embodiment of the present invention is capable of preventing damages of the flexible battery by preventing distortion of the flexible battery through the support during bending of the watch strap, thereby preventing excessive deformation of the flexible battery.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a bracelet type watch strap and a wrist wear type electronic device including the same,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a wristband type wristband and a wrist wearable electronic device including the same.

As consumers' demands have changed due to digitization and high performance of electronic products, market demand is changing due to the development of power supply devices with high capacity due to thinness and light weight and high energy density.

Power supplies such as high-energy density and high-capacity lithium ion secondary batteries, lithium ion polymer batteries, super capacitors (electric double layer capacitors and water pseudo capacitors), etc., Is being developed.

In recent years, demand for mobile electronic devices such as portable telephones, notebooks, digital cameras, and the like has been continuously increasing. Especially, the demand for portable electronic devices such as rolled-up displays, flexible e-paper, flexible liquid crystal display ), Flexible organic light-emitting diodes (flexible OLEDs), and the like have been increasingly attracting interest in flexible mobile electronic devices. Accordingly, a power supply for a flexible mobile electronic device is also required to have a flexible characteristic.

Flexible batteries are being developed as one of the power supply devices capable of reflecting such characteristics.

Flexible batteries include flexible nickel-cadmium batteries, nickel-metal hydride batteries, nickel-hydrogen batteries, and lithium-ion batteries. In particular, lithium-ion batteries have high utilization because they have a high energy density per unit weight and rapid charging as compared to lead batteries and other batteries such as nickel-cadmium batteries, nickel-hydrogen batteries and nickel-zinc batteries.

The lithium-ion battery uses a liquid electrolyte, and is mainly used as a metal can as a container. However, a cylindrical lithium ion battery using a metal can as a container has a disadvantage of restricting the design of the electric appliance because of its fixed shape, and it is difficult to reduce the volume.

Particularly, as mentioned above, mobile electronic devices are developed to be thin and miniaturized as well as being flexible. Thus, a lithium ion battery using a conventional metal can or a battery having a square structure is not easy to apply to mobile electronic devices have.

Accordingly, in order to solve the above-described structural problem, a pouch type battery in which an electrolyte is sealed in a pouch containing two electrodes and a separator has been developed.

Such a pouch-type battery is made of a flexible material and can be manufactured in various forms, and has an advantage that an energy density per mass can be realized.

However, such a pouch-type battery may cause an excessive load on the built-in electrode assembly when excessive bending or twisting occurs.

Such a load causes the electrode assembly to break down, failing to function as a battery.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a bracelet-type watch frame capable of preventing the flexible battery from being excessively deformed by preventing the flexible battery from twisting through a support body when bending a flexible battery built- And a wrist wearable electronic device including the same.

According to an aspect of the present invention, there is provided an electronic apparatus comprising: a housing having a coupling portion to which a main body of an electronic apparatus is coupled; A flexible battery built in the housing and supplying power to the main body side; And a support body for supporting the rim of the flexible battery to prevent twisting of the flexible battery when bending the bracelet.

Also, the support may be a frame structure having elasticity.

The support may include a pair of first frames spaced apart from each other at a predetermined interval, and a pair of second frames each connecting the ends of the pair of first frames.

In addition, the support may be provided with at least one reinforcing bar interconnecting the middle of the length of the pair of first frames.

In addition, the flexible battery may be disposed so that its rim side is in contact with one side of the support body.

Also, the support may be arcuate.

The housing may be provided such that the thickness of the middle portion of the housing is relatively thicker than the thickness of both end portions, and the cross-sectional area of the housing gradually decreases from the middle portion of the housing toward both ends thereof.

In addition, a circuit part electrically connected to the terminal of the flexible battery may be disposed at the middle of the length of the housing.

In addition, the flexible battery may have at least one terminal for electrically connecting with the main body of the electronic device in the middle of the length.

The flexible battery includes: an electrode assembly including an anode, a cathode, and a separator; And an outer casing that encapsulates the electrode assembly together with the electrolyte solution.

In addition, the outer casing and the electrode assembly are provided with patterns for shrinking and relaxing when bending, and the outer casing and the electrode assembly may have patterns corresponding to each other.

Also, the pattern formed on the casing and the electrode assembly may be entirely or partially provided.

In addition, the coupling portion is disposed at a middle portion of the length of the housing, and the flexible battery does not have the pattern in a region corresponding to the coupling portion.

The electrode assembly may further include a cathode on which a cathode active material layer is disposed on one surface or both surfaces of the cathode current collector and a cathode and a separator on which an anode active material layer is disposed on one or both surfaces of the anode current collector, May be provided with the same pattern as that of the exterior material for shrinking and relaxing during bending.

The separation membrane may further include a nonwoven fabric layer; And a nanofiber web layer containing polyacrylonitrile nanofibers laminated on one or both surfaces of the nonwoven fabric layer.

The flexible battery includes at least a portion of the flexible battery which is disposed in a direction parallel to the longitudinal direction of the flexible battery, And the folding line may be spaced apart from the boundary region between the receiving portion and the sealing portion by a predetermined distance from the receiving portion.

Further, the support may be covered with a part of the flexible battery which is arranged so that the both side ends thereof are located on the side of the fold line, and which is bent to the boundary of the fold line.

Meanwhile, the present invention provides a band member comprising the bracelet type watch band described above; And at least one piece of information is displayed on one surface of the electronic device and is fastened to the band portion through the coupling portion.

According to the present invention, it is possible to prevent the flexible battery from being twisted by the support body when bending the wrist strap, thereby preventing the flexible battery from being damaged by twisting.

1 is a perspective view of a wrist wearable electronic device to which a bracelet type watchband is applied according to an embodiment of the present invention;
FIG. 2 is a view showing a state in which the main body is separated in FIG. 1,
3 is a view illustrating a state where a housing is removed from a bracelet type wristband according to an embodiment of the present invention,
Figure 4 is an illustration of the separation of Figure 3,
5 is a view illustrating a state in which a support and a flexible battery are separated from each other in a bracelet type wristband according to an embodiment of the present invention,
FIG. 6 is a cross-sectional view showing a coupling relationship between a support and a flexible battery in a bracelet type wrist strap according to an embodiment of the present invention,
7 is a view showing a flexible battery applied to a bracelet type watch band according to an embodiment of the present invention,
8 is a cross-sectional view of Fig. 7,
FIG. 9 is a schematic view for explaining the position of a folding line in FIG. 7,
10 is a view showing another type of folding method in a flexible battery applied to a bracelet type wristband according to an embodiment of the present invention,
11 is a view showing another embodiment of a flexible battery applied to a wristband type wristband according to an embodiment of the present invention,
FIG. 12 is a schematic view showing various forms of a pattern formed on a casing and an electrode assembly of a flexible battery applied to a bracelet type watch band according to an embodiment of the present invention,
13 to 16 are schematic views showing various shapes of patterns in a flexible battery applied to a bracelet type watch band according to an embodiment of the present invention,
17 is an enlarged cross-sectional view showing a detailed configuration of a flexible battery applied to a wristband type wristband according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same reference numerals are assigned to the same or similar components throughout the specification.

The wrist strap 100 according to an embodiment of the present invention includes a housing 110, a flexible battery 120, and a support 140 as shown in Figs.

The housing 110 provides a space for accommodating the flexible battery 120 and the support 140 and protects the built-in flexible battery 120 and the support 140 from the external environment.

The housing 110 may be made of a soft material such as silicon or cloth, or may be provided in the form of a thin metal plate having elasticity. And may be made of a soft material so as to enhance the feeling of comfort.

 1, a coupling portion 114 for coupling with the main body 200 of the electronic device is provided at one side of the housing 110, 200 to be exposed to the outside.

Preferably, the coupling portion 114 and the connection terminal 152 are formed in the electronic device main body 200 in a state in which the bracelet type wrist strap 100 of the present invention is in a 'C' shape like a bracelet, So that it is positioned at the middle portion of the length of the housing 110.

Accordingly, the electronic device body 200 can be easily coupled to the coupling portion 114 in a state in which the wristwatch 100 according to the present invention is worn by a user in the same form as a bracelet.

Here, the electronic device main body 200 includes a circuit board (not shown) therein, and various information transmitted from the circuit board is displayed on a display unit 210 provided on one side, 210 so that necessary information can be confirmed.

The electronic device main body 200 may be a known smart watch or a display device that displays images such as a small DMB and a PDP. That is, it is found that all the electric devices capable of displaying various letters, numbers and images on the display unit through the electric signal can be applied to the electronic device main body. In addition, it is noted that the main body of the electronic apparatus may display the contents of the portable apparatus and the electronic apparatus through a short distance communication with the portable apparatus and other electronic apparatuses.

A connection terminal 212 corresponding to the connection terminal 152 is provided on one side of the main body 200 of the electronic apparatus 200 so that the connection terminal 152 is electrically connected to the connection terminal 152 So that power can be supplied from the flexible battery 120.

In this case, the coupling portion 114 is made of a rigid material such as plastic or metal for fastening the main body 200 of the electronic device, and is formed in a region corresponding to the connected terminal 152 152 may be provided in the form of a frame having an exposure hole for exposing to the outside.

However, the present invention is not limited to the above-described coupling portion 114, and may include a terminal for electrically connecting the main body 200 of the electronic device with the flexible battery when the main body 200 is coupled with the main body 200, ) Can be fastened in any manner.

The connection terminal 152 is electrically connected to the flexible battery 120 and / or the circuit unit 150 to be described later so that the power supplied from the flexible battery 120 is supplied to the electronic device body 200 To-date.

The bracelet type watch 100 according to the present invention can be used for charging the main battery 200 of the electronic apparatus main body 200 in an emergency, It can also be used as a battery.

Here, the connection terminal 152 may be provided as a pair consisting of an anode and a cathode, or may be provided in the form of a USB type in which an anode and a cathode are integrated. 139 may be directly connected to the pair of electrode terminals 138, 139 or may be in the form of an exposed terminal electrically connected to the pair of electrode terminals 138, 139 via a circuit board. In addition, the connection terminal 152 may be directly exposed to the pair of electrode terminals 138 and 139 provided in the flexible battery 120. [

At this time, the housing 110 is formed in a 'C' shape having openings between both ends by incorporating the support body 140 together with the flexible battery 120. Accordingly, even though the housing 110 is made of a soft material such as silicone, leather, or fabric, the housing 110 can be worn on the user's wrist while the overall shape of the housing 110 is maintained.

On both sides of the housing 110, fasteners 116a and 116b may be provided to fix the both ends of the housing 110. The wrist strap 100 can be easily separated from the user's wrist by the weight of the electronic device body 200 when the electronic device body 200 is fastened through the coupling part 114 of the housing 110 .

Although the fasteners 116a and 116b are shown as protrusions or grooves corresponding to each other, it is to be understood that the fasteners 116a and 116b are not limited to the protrusions and grooves, and that various known fastening systems can be applied to correspond to each other.

1, the housing 110 may have a thickness W1 that is relatively thicker than the other portion W2, as shown in FIG. 1, .

This is because when the circuit unit 150 for preventing overcharging of the electronic device main body 200 is provided at the time of charging, the circuit unit 150 electrically connected to the flexible battery 120 is connected to the housing 110 having a relatively thick thickness, So that it is possible to secure a sufficient space for arranging the circuit unit 150 without needing to make a structural change while maintaining the overall shape of the bracelet (FIGS. 2 and 3) 6).

The circuit unit 150 may be electrically connected to a connection terminal 152 electrically connected to the connection terminal 212 of the main body 200 of the electronic device.

In the drawings and description, the coupling portion 114 and the connection terminal 152 are provided at the middle portion of the housing 110, but the present invention is not limited thereto. The length of the housing 110 The engaging portion 114 and the connected terminal 152 may be disposed at positions offset to either one of the opposite ends from the other end.

The flexible battery 120 is used as an auxiliary battery that supplies power to the main body 200 of the electronic device and charges the main battery provided in the main body or assists the main battery of the main body.

Such a flexible battery 120 includes the electrode assembly 130 and the casing materials 121 and 122 as shown in FIGS.

17, the separator 134 is disposed between the positive electrode 132 and the negative electrode 136, so that the positive electrode 132 and the negative electrode 136 are separated from each other, 132 and the cathode 136 may be separated by a separator 134.

The anode 132 includes a cathode current collector 132a and a cathode active material 132b and the cathode 136 includes a cathode current collector 136a and a cathode active material 136b. May be integrated with the separation membrane 134.

The flexible battery 120 includes a positive electrode terminal 138 and a negative electrode terminal 139 connected to the negative electrode current collector 136a and the positive electrode current collector 132a. The positive electrode terminal 138 and the negative electrode terminal 139 are for electrically connecting the electrode assembly 130 to an external device.

The positive electrode terminal 138 and the negative electrode terminal 139 are provided in the middle of the length of the casing members 121 and 122 so that the middle portion of the flexible battery 120 is connected to the coupling portion 114 and the to- 152 to be electrically connected to the connection terminal 152 even if it is disposed at a position corresponding to the connection terminal 152.

The positive electrode terminal 138 and the negative electrode terminal 139 are disposed such that the ends of the positive electrode terminal 138 and the negative electrode terminal 139 are located in the middle of the length of the sealing portion 124 of the casing members 121 and 122, The end of the terminal 139 may be exposed to the outside or may be formed to protrude outside of the casing members 121 and 122 by a predetermined length. That is, the formation positions of the positive electrode terminal 138 and the negative electrode terminal 139 can be appropriately varied to match the position of the to-be-connected terminal 152 for smooth connection with the to-be-connected terminal 152.

The separation membrane 134 may include a nonwoven fabric layer 134a and a nanofiber web layer 134b laminated on one or both surfaces of the nonwoven fabric layer 134a.

Here, the nanofiber web layer 134b may be a nanofiber containing at least one selected from the group consisting of polyacrylonitrile nanofiber and polyvinylidene fluoride nanofiber.

Preferably, it may be composed of only polyacrylonitrile nanofibers to ensure the formation of radioactive and uniform pores in the formation of the nanofiber web layer 134b. The polyacrylonitrile nanofibers of the nanofiber web layer 134b may have an average diameter of 0.1 to 2 mu m, and preferably 0.1 to 1.0 mu m.

This is because if the average diameter of the nanofibers is less than 0.1 탆, the separation membrane may not have sufficient heat resistance. If the average diameter exceeds 2 탆, the mechanical strength of the separation membrane is excellent, but the elasticity of the separation membrane may be reduced .

In addition, the nonwoven fabric constituting the nonwoven fabric layer 134a may be formed of a material selected from the group consisting of cellulose, cellulose acetate, polyvinyl alcohol (PVA), polysulfone, polyimide, polyetherimide, polyamide polyamide, polyethylene oxide (PEO), polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polyurethane (PU), polymethyl methacrylate (PMMA), poly (methylmethacrylate), and polyacrylonitrile.

The nonwoven fabric layer 134a may further include inorganic additives such as 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, N _3, may include a _{BaO, Na 2 O, Li 2} CO 3, CaCO 3, LiAlO 2, SiO 2, Al 2 O 3 and at least one selected from PTFE.

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.

At this time, the average thickness of the separation membrane 134 may be 10 to 100 탆, preferably 10 to 50 탆.

If the average thickness of the separation membrane 134 is less than 10 탆, the separation membrane is too thin, which may prevent long-term durability of the separation membrane due to repeated bending and / or spreading of the battery. If the average thickness exceeds 100 탆, It is preferable to have an average thickness within the above range.

The nonwoven fabric layer 134a may have an average thickness of 10 to 30 占 퐉, preferably 15 to 30 占 퐉, and the nanofiber web layer 134b may have an average thickness of 1 to 5 占 퐉.

The positive electrode collector and / or the negative electrode collector may be formed of a thin metal foil and may be formed in a strip shape having a predetermined length, and may be formed of copper, aluminum, stainless steel, nickel, titanium, chromium, manganese, iron, cobalt, zinc, Molybdenum, tungsten, silver, gold, and combinations thereof.

The positive electrode active material includes a positive electrode active material capable of reversibly intercalating and deintercalating lithium ions. Typical examples of the positive electrode active material include LiCoO2, LiNiO2, LiMnO2, LiMn2O4, or LiNi1-x-yCoxMyO2 x? 1, 0? y? 1, 0? x + y? 1, and M is a metal such as Al, Sr, Mg, or La). However, in the present invention, it is of course possible to use other kinds of cathode active materials in addition to the cathode active material.

The negative electrode active material includes a negative electrode active material capable of intercalating and deintercalating lithium ions. Examples of the negative electrode active material include a carbon-based negative electrode active material of a crystalline or amorphous carbon, carbon fiber, or carbon composite, Oxides, lithium compounds thereof, lithium, lithium alloys, and mixtures thereof. However, the present invention is not limited to the kind of the negative electrode active material.

The positive electrode active material 132b and the negative electrode active material 136b are made of PTFE (Polytetrafluoroethylene) to prevent peeling from the positive electrode collector 132a or the negative electrode collector 136a and to prevent cracking of the positive electrode active material layer and the negative electrode active material layer, ≪ / RTI >

The outer casings 121 and 122 are made of a plate-like member having a predetermined area and are for protecting the electrode assembly 130 from external force by receiving the electrode assembly 130 and the electrolyte therein.

To this end, the exterior materials 121 and 122 are provided as a pair of first exterior material 121 and second exterior material 122, and the edge sides of the pair of exterior materials 121 and 122 facing each other are sealed with an adhesive, Thereby preventing the electrolyte solution and the electrode assembly 130 from being exposed to the outside and preventing the electrolyte from leaking to the outside.

9 and 11, the casing member 120 includes a receiving portion 123 for receiving the electrode assembly 130 and the electrolyte therein, and a receiving portion 123 for receiving the electrode assembly 130 along the rim of the receiving portion 123. [ And an electrode assembly 130 and a sealing part 124 sealed to prevent the electrolyte from leaking to the outside.

In this case, the outer casing 121 and the outer casing 122 may be sealed by an adhesive, and then the first outer casing 121 and the second casing 122 may be two members, And the remaining sealing portions 124 that are folded in half along the width or length direction and then abutted against each other may be sealed with an adhesive.

As shown in FIG. 8, the pair of outer casings 121 and 122 are formed by laminating the first resin layers 121a and 122a, the elastic metal layers 121b and 122b, and the second resin layers 121c and 122c, And a side of the first resin layers 121a and 122a facing each other is sealed with an adhesive so that a receiving portion 123 for receiving the electrolyte and the electrode assembly 130 is formed in a central region, And a sealing portion 124 is formed along the rim of the portion 123.

At this time, the flexible batteries 120 and 120 'are disposed on the upper surface side or the lower surface side of the accommodating portion 123 via folding lines 125, which are disposed in a direction parallel to the longitudinal direction, So that an unnecessary region except for the electrolyte 123 and the accommodating portion 123 in which the electrode assembly 130 is accommodated can be minimized.

As a result, the width of the sealing portion 124 protruding outward from the receiving portion 123 is reduced by the corresponding width of the flexible battery 120 or 120 'according to the present invention, The width of the sealing portion protruding in the width direction is minimized to reduce the dead space, so that the area of the accommodating portion 123 can be relatively widened.

Accordingly, even if the overall size of the flexible batteries 120 and 120 'is the same, the size of the electrode assembly 130 can be increased by an area corresponding to the area of the wider receiving portion 123, Of a flexible battery.

At this time, the folding line 125 is spaced apart from the boundary line between the receiving portion 123 and the sealing portion 124 toward the receiving portion 123 at a predetermined interval. 9, the folding lines 125 are arranged to be spaced inwardly from the rim of the accommodating portion 123 at a predetermined distance, and more particularly, to the electrode assembly 130 accommodated in the accommodating portion 123. In other words, Is disposed in a region between a side end of the sealing portion (130) and a boundary line separating the receiving portion (123) and the sealing portion (124).

That is, in the flexible battery 120, the folding line 125 for guiding the point where both side portions including the sealing portion 124 are bent is disposed on the receiving portion 123, so that the amount of the flexible battery 120 The bent portion is always positioned on the receiving portion 124 in the process of bending the side portion.

This is because if the first resin layers 121a and 122a constituting the exterior material are cured by the adhesive agent, the probability of occurrence of cracks becomes very high. Accordingly, when the folding line 125 is positioned on the sealing part 124 which is in direct contact with the adhesive in the course of the bending process, the adhesive is cured by the adhesive to cause cracking during bending, And the leaked electrolyte is moved through the elastic metal layers 121b and 122b laminated on the first resin layers 121a and 122a, thereby causing an electric short.

According to the present invention, since the folding line 125 is positioned on the accommodating portion 123 to which the adhesive is not applied, the first resin layers 121a and 122a are prevented from being hardened by the adhesive, It is possible to prevent a risk of cracks occurring in the first resin layers 121a and 122a during the bending process.

In other words, when both end portions including the sealing portion 124 protruding in the width direction are bent toward the one surface side of the receiving portion 123 in order to minimize the dead space, the bent portion is bent by the folding line 125 And is formed at a portion corresponding to the folding line 125 by being guided and bent.

When the folding line 125 is positioned on the boundary line of the sealing part 124 connected to the receiving part 123 or on the side of the sealing part 124, Since the first resin layers 121a and 122a are brought into contact with the adhesive existing in the sealing region 124, curing by the adhesive occurs do.

Accordingly, when cracks are generated in the first resin layers 121a and 122a cured by the adhesive during the bending process, the electrolyte solution stored in the storing part 123 leaks through the cracks and the first resin layers 121a and 122a The elastic metal layers 121b and 122b are stacked on the elastic metal layers 121b and 122b.

The folding line 125 for guiding the folded position is disposed in the inner area of the sealing part 124, that is, the boundary between the receiving part 123 and the sealing part 124, So that electrical shorting due to leakage of the electrolytic solution can be prevented in advance.

At this time, the portion bent from the flexible battery 120 or 120 'to the upper surface side or the lower surface side of the accommodating portion 123 may be folded on the same surface of the accommodating portion 123 as shown in FIG. 7, And may be respectively folded on the opposite surfaces as shown in FIG.

On the other hand, the first resin layers 121a and 122a constituting the casing members 121 and 122 are joined to each other on the rim side to form a receiving portion 123 for receiving the electrolyte solution and the electrode assembly 130. [

The exterior materials 121 and 122 may be made of a material selected from the group consisting of acid modified polypropylene (PPA), cast polyprolypene (CPP), linear low density polyethylene (LLDPE), low density polyethylene (LDPE), high density polyethylene (HDPE), polyethylene, polyethylene terephthalate, A single layer structure of ethylene vinyl acetate (EVA), an epoxy resin and a phenol resin, or a laminated structure thereof.

Layer structure or a laminated structure thereof, preferably one of an acid modified polypropylene (PPA), a cast polyprolypene (CPP), a linear low density polyethylene (LLDPE), a low density polyethylene (LDPE) can do.

The first resin layers 121a and 122a may have an average thickness of 20 占 퐉 to 80 占 퐉 and preferably an average thickness of 20 占 퐉 to 60 占 퐉.

If the average thickness of the first resin layers 121a and 122a is less than 20 占 퐉, it may be disadvantageous in securing the bonding strength and airtightness between the first casing member 121 and the second casing member 122, It is uneconomical to overcome the disadvantage of thinning, and therefore, it is preferable to have an average thickness within the above range.

The elastic metal layers 121b and 122b have a dense density to prevent moisture and electrolytic solution from passing therethrough and prevent moisture from permeating from the outside to the accommodating portion 123 side, The electrolytic solution stored in the electrolytic cell 123 is prevented from leaking to the outside.

The average thickness of the elastic metal layers 121b and 122b may be 5 占 퐉 or more, preferably 5 占 퐉 to 100 占 퐉, and more preferably 30 占 퐉 to 50 占 퐉.

If the average thickness of the elastic metal layers 121b and 122b is less than 5 占 퐉, the elastic metal layers 121b and 122b may not be able to function as elastic metal layers. In other words, as described above, the elastic metal layers 121b and 122b are dense and can not pass through the moisture and the electrolytic solution. If the average thickness of the elastic metal layers 121b and 122b is less than 5 占 퐉, Moisture can be infiltrated into the accommodating portion 123, and the electrolyte contained in the accommodating portion 123 can be leaked to the outside.

The elastic metal layers 121b and 122b may be formed of any one selected from the group consisting of an aluminum thin film, a copper thin film, a phosphor bronze (PB) thin film, an aluminum bronze thin film, a Baekdong thin film, a Berylium- A copper-phosphorus thin film, a copper-copper thin film, a cornson alloy thin film and a chromium-zirconium copper alloy thin film, and preferably a phosphor bronze (PB) thin film or a beryllium- copper thin film.

Herein, the phosphor bronze thin film is an alloy containing phosphorus in bronze, and beryllium copper is a copper alloy containing 0.2 to 2.5% beryllium. It has the highest strength among the copper alloy and has excellent corrosion resistance, wear resistance, fatigue resistance, spring characteristic and electric conductivity can do.

The phosphor bronze thin film may have a linear expansion coefficient of 1.0 to 1.7 × 10 ^-7 / ° C., preferably 1.2 to 1.5 × 10 ^-7 / ° C.

If the coefficient of linear expansion of the phosphor bronze thin film is less than 1.0 x 10 < ^-7 > / DEG C, sufficient flexibility can not be secured and cracks may be caused by external force. In addition, when the coefficient of linear expansion of the phosphor bronze thin film exceeds 1.7 x 10 < ^-7 > / DEG C, sufficient rigidity can not be ensured and deformation of the casing materials 121 and 122 becomes severe.

The phosphor bronze thin film may contain 3.5 to 10 wt%, preferably 4 to 8 wt% of tin (Sn), 0.03 to 0.35 wt% of phosphorus (P), and 89.3 to 96.2 wt% of copper.

At this time, the characteristics of the phosphor bronze thin film may vary depending on the content of tin contained in the phosphor bronze thin film. That is, when the content of tin is less than 3.5 wt%, the strength of the phosphor bronze thin film is deteriorated to cause deformation of the casing. When the content of tin exceeds 10 wt%, sufficient flexibility can not be secured, Can occur.

The second resin layers 121c and 122c constitute an outermost layer of the casing materials 121 and 122 as a flexible substrate. The second resin layers 121c and 122c are provided to reinforce the strength of the facings and to protect the facings 121 and 122 from external forces such as scratches caused by external physical contact.

The second resin layers 121c and 122c may include at least one selected from the group consisting of nylon, polyethylene terephthalate (PET), cycloolefin polymer (COP), polyimide (PI) Fluorine-based compounds.

The fluorine-based compound may be at least one selected from the group consisting of polytetrafluoroethylene (PTFE), perfluorinated acid (PFA), fluorinated etheylene propylene copolymer (FEP), polyethylene tetrafluoroethylene (ETFE), polyvinylidene fluoride (PVDF), ethylene chlorotrifluoroethylene (ECTFE), and polychlorotrifluoroethylene And the like.

At this time, the second resin layers 121c and 122c may have an average thickness of 10 占 퐉 to 50 占 퐉, preferably an average thickness of 15 占 퐉 to 40 占 퐉, more preferably 15 占 퐉 to 35 占 퐉 .

This is because if the average thickness of the second resin layers 121c and 122c is less than 10 mu m, mechanical properties of a sufficient pouch can not be ensured, and if it exceeds 50 mu m, it is uneconomical.

The facings 121 and 122 may further include an adhesive layer (not shown) between the elastic metal layers 121b and 122b and the second resin layers 121c and 122c.

Such an adhesive layer can impart reliability to safety and internal short circuit when the electrode assembly 130 accommodated in the accommodating portion 123 is abnormally overheated and the elastic metal layers 121b and 122b and the second water Thereby facilitating adhesion between the ground layers 121c and 122c.

Here, the adhesive layer may be made of a material similar to that of the second resin layer, and may include at least one adhesive selected from silicone, polyphthalate, acid modified polypropylene (PPa) and acid modified polyethylene (PEa) . ≪ / RTI >

At this time, the adhesive layer may have an average thickness of 5 탆 to 30 탆, and preferably 10 탆 to 20 탆. This is because, if the average thickness of the adhesive layer is less than 5 mu m, it may be difficult to secure a stable adhesive force, and if it exceeds 30 mu m, peeling may be detrimental.

A dry lamination layer may be interposed between the elastic metal layers 121b and 122b and the second resin layers 121c and 122c.

Here, the dry laminate layer may have an average thickness of 1 탆 to 7 탆, preferably an average thickness of 2 탆 to 5 탆, and more preferably an average thickness of 2.5 탆 to 3.5 탆.

This is because if the average thickness of the dry laminate layer is less than 1 m, the adhesive force is too weak to cause peeling between the elastic metal layers 121b and 122b and the second resin layers 121c and 122c, Is not only unnecessarily thicker than the dry laminate layer but may adversely affect pattern formation.

Meanwhile, the outer packaging material 121, 122 may be provided on at least one side with a pattern 126 for contraction and relaxation when bending.

The pattern 126 is formed such that the crests and valleys are repeatedly arranged along the longitudinal direction of the facings 121 and 122.

Specifically, the crests and valleys of the pattern 126 may be formed parallel to a straight line parallel to the width direction of the facings 121 and 122 as shown in FIG.

In addition, the crests and valleys of the pattern 126 may be provided so that the adjacent crests and valleys have the same interval, or the adjacent crests or valleys may have different intervals, Or may be provided in a form in which different intervals are combined.

Accordingly, in the flexible battery 120 according to the embodiment of the present invention, the shrinkage and relaxation in the longitudinal direction at the time of bending can be facilitated through the pattern 126.

Therefore, even if repeated loads are applied during bending of the casing materials 121 and 122, not only the fatigue applied to the casing materials 121 and 122 themselves can be reduced, but also the electrode assembly 130 disposed inside the casing materials 121 and 122, So that it can be protected from the load generated at the time.

The pattern 126 may be formed on the entire surface of the casing member 121 or 122, or may be partially formed. Particularly, when the positive electrode terminal 138 and the negative electrode terminal 139 are formed in the middle of the length of the casing materials 121 and 122, in the middle portion of the length including the positive terminal 138 and the negative terminal 139, 126 may not be formed.

The electrode assembly 130 may be provided in the form of a flexible plate. The electrode assembly 130 may have the same pattern as the pattern 126 formed on the casing members 121 and 122 for shrinking and relaxing during bending, like the casing members 121 and 122. [ (Not shown).

That is, the positive electrode 132, the negative electrode 136, and the separator 134 constituting the electrode assembly 130 are formed in the same pattern 137 as the pattern 126 formed on the casing materials 121 and 122 for shrinking and relaxing during bending May be provided.

The pattern 137 formed on the electrode assembly 130 may be formed parallel to a straight line parallel to the width direction, as in the case of the pattern 126 formed on the facings 121 and 122 (see FIG. 17). It should be noted that the pattern 126 formed on the outer casing 121 and the pattern 137 formed on the electrode assembly 130 need only be matched with each other.

13 to 16, the crests and valleys may be continuous or discontinuous, and the cross-sectional shape of the crests and valleys may be a linear pattern, a prism pattern, a semicircular pattern, a wave pattern , A polygonal pattern, and a mixed pattern thereof.

The support body 140 is embedded in the housing 110 together with the flexible battery 120 and supports the edge of the flexible battery 120 so that the flexible battery 120 is constantly The inclined angle is intended to prevent twisting in an oblique direction.

In other words, the support 140 prevents the flexible battery 120 from being twisted in a twisting direction that is not protected by the patterns 126 and 137, thereby protecting the flexible battery 120 always by the patterns 126 and 137 .

To this end, the support 140 is made of a material having elasticity, and the flexible battery 120 together with the housing 110 is formed in an arc shape so as to maintain a bracelet having a substantially 'C' shape.

The edge of the flexible battery 120 is fixed so as to be in contact with one side of the supporting member 140 so that excessive bending is prevented from being generated toward the flexible battery 120 due to the same behavior as that of the supporting member 140 .

6B, the flexible battery 120 is disposed such that both ends of the support 140 are located on the side of the folding line 125, so that the flexible battery 120 can be flexibly folded along the folding line 125, And may be covered through a part of the battery 120. [

The support 140 according to an embodiment of the present invention may be formed of a plate-shaped member covering one surface of the flexible battery 120, but may be formed of a frame structure to reduce the material and reduce weight.

That is, the support 140 includes a pair of first frames 141a and 141b spaced apart from each other at regular intervals, a pair of first and second frames 141a and 141b, Two frames 142a and 142b.

At this time, the first frames 141a and 141b and the second frames 142a and 142b are arranged and fixed such that the edge of the flexible battery 120 is in contact with the frame. In addition, since at least one reinforcing bar 144 connecting the pair of first frames 141a and 141b disposed opposite to each other is provided in the middle of the length of the first frames 141a and 141b, have.

The wrist strap 100 and 100 'according to the present invention has the elastic body supporting the side of the flexible battery 120 in the housing 110, So that the flexible battery 120 is prevented from being twisted through the support 140 to induce shrinkage and relaxation in a direction coinciding with the patterns 126 and 137 formed on the flexible battery 120, It is possible to prevent the risk that the battery 120 will be damaged by an excessive load.

Meanwhile, the wristband-type watch 100 according to the present invention can perform the role of a band part to be fastened to the main body 200 of the electronic device in the wrist-wear-type electronic device 1. That is, the electronic bracelet 200 can be easily coupled to the coupling portion 114 while the wristwatch 100 is worn on the wrist by a user in the same manner as a bracelet, so that various types of wrist- (1).

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1: Wrist-wearing electronic device 100: Bracelet type watch band
110: housing 114:
116a, 116b: fastener 120: flexible battery
121: first exterior material 122: second exterior material
121a, 122a: first resin layer 121b, 122b: elastic metal layer
121c and 122c: second resin layer 123:
124: sealing part 125: folding line
126: Pattern
130: electrode assembly 132: anode
132a: positive electrode current collector 132b: positive electrode active material
134: separator 134a: nonwoven fabric layer
134b: nanofiber web layer 136: cathode
136a: anode current collector 136b: anode active material
137: Pattern 138: Positive electrode terminal
139: negative electrode terminal 140: support
141a, 141b: first frame 142a, 142b: second frame
144: Reinforcing bar 150: Circuit part
152: connection terminal 200: electronic device body
210: display unit 212: connection terminal

Claims (18)

A housing having a coupling portion to which a main body of the electronic device is coupled;
A flexible battery built in the housing and supplying power to the main body side; And
And a support body for supporting the rim of the flexible battery to prevent twisting of the flexible battery when bending the bracelet. The method according to claim 1,
Wherein said support comprises a frame structure having an elastic force. 3. The method of claim 2,
Wherein the support comprises a pair of first frames spaced apart at regular intervals and a pair of second frames each connecting the ends of the pair of first frames. The method of claim 3,
Wherein the support comprises at least one reinforcing bar interconnecting the middle of the length of the pair of first frames. The method according to claim 1,
Wherein the flexible battery is arranged so that its rim side is in contact with one side of the support body. The method according to claim 1,
The bracelet type watchband according to claim 1, The method according to claim 1,
Wherein the housing is provided such that the thickness of the middle portion of the length is relatively thicker than the thickness of the both end portions, and the cross-sectional area gradually decreases from the middle portion of the housing toward the both end portions thereof. 8. The method of claim 7,
And a circuit part electrically connected to a terminal of the flexible battery is disposed at a middle portion of the length of the housing. The method according to claim 1,
Wherein the flexible battery has at least one terminal for electrically connecting to a main body of the electronic device at an intermediate portion of the length. The method according to claim 1,
The flexible battery includes:
An electrode assembly including an anode, a cathode, and a separator; And
A bracelet type wrist strap including an outer case covering the electrode assembly together with an electrolytic solution. 11. The method of claim 10,
The outer casing and the electrode assembly are provided with a pattern for shrinking and relaxing when bending,
The bracelet type wrist strap according to any one of claims 1 to 7, 12. The method of claim 11,
The bracelet-type watch according to any one of the preceding claims, wherein the pattern formed on the outer casing and the electrode assembly is entirely or partially provided. 13. The method of claim 12,
Wherein the engaging portion is disposed at an intermediate portion of the length of the housing, and the flexible battery has no pattern formed in an area corresponding to the engaging portion. 11. The method of claim 10,
The electrode assembly includes a cathode on which a cathode active material layer is disposed on one surface or both surfaces of a cathode collector, and a cathode and a separator on which an anode active material layer is disposed on one or both surfaces of the anode collector,
Wherein the anode, the cathode, and the separator are provided with the same pattern as the pattern of the casing for shrinking and relaxing during bending. 11. The method of claim 10,
Wherein the separation membrane comprises a nonwoven fabric layer; And a nanofiber web layer containing polyacrylonitrile nanofibers laminated on one or both sides of the nonwoven fabric layer. 11. The method of claim 10,
Wherein the exterior member includes a housing portion in which the flexible battery is accommodated and a sealing portion disposed at an edge of the housing portion to prevent leakage of the electrolyte solution,
Wherein the flexible battery is bent to the upper surface side or the lower surface side of the accommodating portion via a folding line disposed at least partially in a direction parallel to the longitudinal direction and the folding line is fixed to the accommodating portion side from the boundary region between the accommodating portion and the sealing portion Bracelet type watch band spaced apart. 17. The method of claim 16,
Wherein the support body is covered with a part of the flexible battery which is arranged so that both end portions thereof are located on the side of the folding line and which is bent at the boundary of the folding line. 18. A band member comprising a wristband type watchband according to any one of claims 1 to 17; And
And at least one piece of information is displayed on one surface of the electronic device and is fastened to the band portion through the coupling portion.

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