KR102579063B1 - Printed battery and IOT device including the same - Google Patents

Abstract

A printing battery is provided. A printed battery according to an embodiment of the present invention includes a plate-shaped first exterior material including a first resin layer and a first metal layer formed on one surface of the first resin layer to form an inner surface; A positive electrode active material layer printed to a predetermined area on one side of the first metal layer; A plate-shaped second exterior material including a second metal layer and a pair of second resin layers respectively disposed on both sides of the second metal layer; a negative electrode printed to a predetermined area on the inner surface of the second exterior material; a plate-shaped separator disposed between the positive electrode active material layer and the negative electrode; and an adhesive member for bonding the edges of the first exterior material and the second exterior material to each other, wherein the first metal layer forms an inner surface of the first exterior material and functions as a moisture barrier, and the positive active material layer is formed by printing. It can also serve as a current collector for the anode.

Description

Printed battery and IOT device including the same}

The present invention relates to a printed battery and an IOT device including the same.

Recently, demand for thin batteries is increasing thanks to the vitality of various sensor tags, RFID tags, smart cards, and medical patch industries related to the Internet of Things.

In particular, the market for label-type sensors is predicted to have great potential in the future, and inexpensive, thin batteries with a thickness of less than a few hundred microns are required as a power source that can operate the sensor.

Thin batteries are a general term for thin, film-shaped batteries and include an anode, a cathode, and an electrolyte, and the anode, cathode, and electrolyte are encapsulated inside a thin film-shaped exterior material.

This exterior material has a structure in which three layers including an internal resin layer, a metal layer, and an external resin layer are laminated. Among these, the metal layer is an essential component of the exterior material for moisture prevention, etc. The metal layer has a dense density, so moisture and electrolyte cannot pass through, preventing moisture from penetrating into the interior of the exterior material from the outside, and preventing the electrolyte inside the exterior material from leaking to the outside of the exterior material. block it from happening.

However, in conventional thin batteries, the metal layer included in the exterior material simply functions as an exterior material. Accordingly, in order to construct the anode or cathode of a thin battery, there is no choice but to form a current collector using a separate metal layer.

This is an obstacle to further reducing the thickness of thin batteries.

KR 10-0588089 B1

The present invention was conceived in consideration of the above points, and its purpose is to provide a printed battery that has high output and can be implemented in a thin form.

In order to solve the above-described problem, the present invention includes a plate-shaped first exterior material including a first resin layer and a first metal layer formed on one surface of the first resin layer to form an inner surface; A positive electrode active material layer printed to a predetermined area on one side of the first metal layer; A plate-shaped second exterior material including a second metal layer and a pair of second resin layers respectively disposed on both sides of the second metal layer; a negative electrode printed to a predetermined area on the inner surface of the second exterior material; a plate-shaped separator disposed between the positive electrode active material layer and the negative electrode; and an adhesive member for bonding the edges of the first exterior material and the second exterior material to each other, wherein the first metal layer forms an inner surface of the first exterior material and functions as a moisture barrier, and the positive active material layer is formed by printing. We provide a printed battery that also serves as a positive electrode current collector.

At this time, the first metal layer may be provided to have a relatively smaller area than the first resin layer and may be formed to be located in the inner region of the first resin layer, and the first metal layer may be an aluminum layer.

As another example, the present invention provides a plate-shaped first exterior material including a first metal layer and a pair of first resin layers respectively disposed on both sides of the first metal layer; an anode printed to a predetermined area on the inner surface of the first exterior material; A plate-shaped second exterior material including a second resin layer and a second metal layer formed on one surface of the second resin layer to form an inner surface; a negative electrode active material layer printed to a predetermined area on one side of the second metal layer; a plate-shaped separator disposed between the positive and negative electrode active material layers; and an adhesive member that bonds the edges of the first exterior material and the second exterior material to each other, wherein the second metal layer forms an inner surface of the second exterior material and serves as a moisture barrier, and the negative active material layer is formed by printing. We provide a printed battery that also serves as a current collector for the cathode.

At this time, the second metal layer may be provided to have a relatively smaller area than the second resin layer and may be formed to be located in the inner region of the second resin layer, and the second metal layer may be a copper layer.

As another example, the present invention provides a plate-shaped first exterior material including a first resin layer and a first metal layer formed on one surface of the first resin layer to form an inner surface; A positive electrode active material layer printed to a predetermined area on one side of the first metal layer; A plate-shaped second exterior material including a second resin layer and a second metal layer formed on one surface of the second resin layer to form an inner surface; a negative electrode active material layer printed to a predetermined area on one side of the second metal layer; a plate-shaped separator disposed between the positive electrode active material layer and the negative electrode active material layer; and an adhesive member for bonding the edges of the first exterior material and the second exterior material to each other, wherein the first metal layer forms an inner surface of the first exterior material and functions as a moisture barrier, and the positive active material layer is formed by printing. It provides a printed battery that also serves as a current collector for the positive electrode, and the second metal layer forms the inner surface of the second exterior material to serve as a moisture barrier layer and also serves as a current collector for the negative electrode on which the negative electrode active material layer is printed.

At this time, the first metal layer may be an aluminum layer formed to have a relatively smaller area than the first resin layer and be located in the inner region of the first resin layer, and the second metal layer may be formed to have a relatively smaller area than the first resin layer. It may be a copper layer provided to have a narrow area and formed to be located in the inner region of the second resin layer.

Additionally, the separator may be a porous substrate.

Additionally, the separator may contain a gel-like electrolyte solution.

Meanwhile, the present invention includes a sensing unit mounted on one side of a flexible circuit board and including a sensor for detecting at least one piece of information; a control unit that controls the operation of the sensing unit; a power supply unit that provides driving power to the control unit; and a cover member that prevents the sensing unit, control unit, and power supply unit from being exposed to the outside, wherein the power supply unit provides the IOT device that is the above-described printing battery.

According to the present invention, there is an advantage in that manufacturing costs can be reduced and overall thickness can be reduced by using the metal layer constituting the exterior material as a current collector for forming the anode or cathode.

1 is a diagram schematically showing a printing battery according to an embodiment of the present invention;
Figure 2 is a cross-sectional view taken along the AA direction of Figure 1 showing the detailed configuration of a printing battery according to an embodiment of the present invention;
Figure 3 is a cross-sectional view taken along the AA direction of Figure 1 showing the detailed configuration of a printing battery according to another embodiment of the present invention;
Figure 4 is a cross-sectional view taken along the AA direction of Figure 1 showing the detailed configuration of a printed battery according to another embodiment of the present invention;
Figure 5 is a schematic diagram showing an IOT device to which a printing battery is applied according to an embodiment of the present invention.

Hereinafter, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. The present invention may be implemented 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 not related to the description are omitted, and identical or similar components are given the same reference numerals throughout the specification.

The printed battery 100 according to an embodiment of the present invention may be a plate-shaped battery with a predetermined area as shown in FIG. 1, and may be a flexible battery with flexibility.

The printed battery 100 according to an embodiment of the present invention may include an exterior material 110, an anode 120, a cathode 130, and a separator 140.

The exterior material 110 may be a plate-shaped member with a certain area. Such an exterior material 110 can protect the anode 120, cathode 130, and separator 140 disposed inside from the external environment and block the electrolyte solution 150 contained therein from leaking to the outside.

To this end, the exterior material 110 may include a pair of first exterior material 111 and a second exterior material 112 as shown in FIGS. 2 to 4, and the first exterior material 111 and the second exterior material 112 2. The exterior materials 112 may be bonded to each other through adhesive members 160 disposed along edges facing each other.

Alternatively, the first exterior material 111 and the second exterior material 112 are made of one member and are folded in half along the width or length direction, and then the remaining border portions are joined through the adhesive member 160. It may be possible.

The first and second exterior materials 111 and 112 may include at least one resin layer 111b and 112b and a metal layer 111a and 112a.

For example, the first exterior material 111 may include a first metal layer 111a and a first resin layer 111b disposed on one or both sides of the first metal layer 111a, and the second exterior material ( 112), like the first exterior material 111, may include a second metal layer 112a and a second resin layer 112b disposed on one or both sides of the second metal layer 112a.

Here, when the first resin layer 111b is disposed on both sides of the first metal layer 111a, one of the two first resin layers 111b forms the inner surface of the first exterior material 111. It can be done, and the other one can form the outer surface of the first exterior material 111.

Likewise, when the second resin layer 112b is disposed on both sides of the second metal layer 112a, one of the two second resin layers 112b forms the inner surface of the second exterior material 112. It can be done, and the other one can form the outer surface of the second exterior material 112.

In the present invention, the first resin layer (111b) and the second resin layer (112b) can reinforce the strength of the exterior material itself, and the first resin layer (111b) and the second resin layer (112b) are the first resin layer (111b) and the second resin layer (112b). When forming the outer surface of the exterior material 111 or the second exterior material 112, damage such as scratches caused by physical contact applied from the outside can be prevented.

Each of the first resin layer 111b and the second resin layer 112b is made of nylon, PET (polyethylene terephthalate), COP (cyclo olefin polymer), PI (polyimide), PAI (polyamideimide), and PEN poly(ethylene naphthalate). and one or more selected from fluorine-based compounds.

Here, when the first resin layer (111b) and the second resin layer (112b) form the inner surface of the first exterior material 111 or the second exterior material 112, the first resin layer (111b) and Each of the second resin layers 112b is polyphthalamide (PPa), casting polyprolypene (CPP), linear low density polyethylene (LLDPE), low density polyethylene (LDPE), high density polyethylene (HDPE), polyethylene terephthalate, polypropylene, and ethylene. It may include one or more selected from vinyl acetate (EVA), epoxy resin, and phenol resin.

Each of the first metal layer 111a and the second metal layer 112a is disposed on one surface of the first resin layer 111b or the second resin layer 112b, so that moisture penetrates into the inside of the print battery 100 from the outside. It is possible to prevent the electrolyte 150 from leaking from the inside of the printing battery 100 to the outside.

That is, the first metal layer 111a and the second metal layer 112a may serve as a moisture barrier layer that blocks the movement of moisture and the electrolyte 150.

To this end, each of the first metal layer 111a and the second metal layer 112a may be made of a dense metal layer to block the passage of moisture and the electrolyte 150.

For example, each of the first metal layer (111a) and the second metal layer (112a) may be a thin metal plate such as a foil, and may be sputtered on one surface of the first resin layer (111b) or the second resin layer (112b). , It may be a metal vapor deposition film formed through a method such as chemical vapor deposition.

As a non-limiting example, the first metal layer 111a and the second metal layer 112a each include aluminum, copper, phosphorbronze (PB), aluminum bronze, cupronickel, and beryllium-copper. , chromium-copper, titanium-copper, iron-copper, Corson alloy, and chromium-zirconium copper alloy.

The average thickness of each of the first metal layer 111a and the second metal layer 112a may be 5 ㎛ or more, and preferably 5 ㎛ to 100 ㎛.

This means that if the average thickness of the first metal layer 111a and the second metal layer 112a is less than 5㎛, moisture penetrates into the inside of the print battery 100 or the electrolyte 150 inside the print battery 100 leaks out. This is because it may leak.

The positive electrode 120 may include a positive electrode current collector 122 and a positive electrode active material layer 121, and the negative electrode 130 may include a negative electrode current collector 132 and a negative active material layer 131, The positive electrode current collector 122 and the negative electrode current collector 132 may be implemented as a plate-shaped sheet with a predetermined area.

That is, each of the positive electrode 120 and the negative electrode 130 may be provided with active material layers 121 and 131 on one or both sides of each current collector 122 and 132, and the active material layers 121 and 131 are of the current collectors 122 and 132. It may be provided for the entire area or may be provided locally for some areas.

At this time, each of the positive electrode current collector 122 and the negative electrode current collector 132 may be printed on the inner surface of the exterior material 110, and each of the positive electrode active material layer 121 and the negative electrode active material layer 131 may be formed by printing on the inner surface of the exterior material 110. It may be printed on one side of the entire body 122 or the negative electrode current collector 132.

For example, the positive electrode current collector 122 may be printed on the inner surface of the first external packaging material 111 of the external packaging material 110, and the positive electrode active material layer 121 may be formed on one side of the positive electrode current collector 122. Can be printed and formed.

Additionally, the negative electrode current collector 132 may be printed on the inner surface of the second exterior material 112 of the exterior material 110, and the negative electrode active material layer 131 may be printed on one side of the negative electrode current collector 132. can be formed.

Here, the positive electrode current collector 122 and the negative electrode current collector 132 may each have a positive electrode terminal 123 and a negative electrode terminal 133 protruding from their respective bodies for electrical connection with an external device.

In addition, the positive electrode current collector 122 and the negative electrode current collector 132 each include copper, aluminum, stainless steel, nickel, titanium, chromium, manganese, iron, cobalt, zinc, molybdenum, tungsten, silver, gold, and one of these. It may be made of a material containing more than one species.

In addition, the positive electrode active material layer 121 and the negative electrode active material layer 131 may be both positive and negative active material layers that are commonly used to construct a positive electrode or a negative electrode.

At this time, in the printed battery 100 according to an embodiment of the present invention, among the first metal layer 111a included in the first exterior material 111 and the second metal layer 112a included in the second exterior material 112. At least one of the anodes 120 and cathodes 130 may serve as a current collector in addition to the moisture barrier layer.

In this case, at least one of the first metal layer 111a included in the first exterior material 111 and the second metal layer 112a included in the second exterior material 112 is the first exterior material 111 or The inner surface of the second exterior material 112 can be formed.

Through this, at least one of the positive electrode active material layer 121 and the negative electrode active material layer 131 may be printed on one side of at least one of the first metal layer 111a and the second metal layer 112a.

Through this, in the printed battery 100 according to an embodiment of the present invention, the first metal layer 111a included in the first exterior material 111 and the second metal layer 112a included in the second exterior material 112 At least one of them forms the inner surface of the exterior material and functions as a moisture barrier layer, and can also serve as a current collector on which the positive electrode active material layer 121 or the negative electrode active material layer 131 can be printed on one side.

For this reason, in the printed battery 100 according to an embodiment of the present invention, the first metal layer 111a included in the first exterior material 111 and the second metal layer 112a included in the second exterior material 112 At least one of them may play a first role as a member constituting the exterior material and a second role as a member constituting the anode or cathode.

As an example, as shown in FIG. 2, in the printed battery 100 according to an embodiment of the present invention, the first exterior material 111 includes a first resin layer 111b forming the outer surface and a first resin layer 111b forming the inner surface. It may include one metal layer (111a), and the positive active material layer 121 may be formed by printing on one surface of the first metal layer (111a). Through this, in this embodiment, the first metal layer 111a and the positive electrode active material layer 121 printed on one surface of the first metal layer 111a can form the positive electrode 120.

In this case, the second exterior material 112 may be formed in a three-layer structure in which a pair of second resin layers 112b are stacked on both sides of the second metal layer 112a, and the cathode 130 is formed of the second resin layer 112b on both sides of the second metal layer 112a. 2 It may be composed of a negative electrode current collector 132 printed on one side of the resin layer 112b and a negative electrode active material layer 131 printed on one side of the negative electrode current collector 132.

At this time, the first metal layer 111a may be provided to have a relatively smaller area than the first resin layer 111b and may be formed to be located in the inner region of the first resin layer 111b. (111a) may be an aluminum layer.

For this reason, the first metal layer 111a can serve both as an exterior material constituting the first exterior material 111 and as a positive electrode current collector 122 constituting the positive electrode 120.

As another example, as shown in FIG. 3, in the printed battery 100 according to another embodiment of the present invention, the second exterior material 112 has a second resin layer 112b forming the outer surface and an inner surface forming the second resin layer 112b. It may include a second metal layer 112a, and a negative electrode active material layer 131 may be printed on one surface of the second metal layer 112a. Through this, in this embodiment, the second metal layer 112a and the negative electrode active material layer 131 printed on one side of the second metal layer 112a can form the negative electrode 130.

In this case, the first exterior material 111 may be formed in a three-layer structure in which a pair of first resin layers 111b are stacked on both sides of the first metal layer 111a, and the anode 120 is formed of the first resin layer 111a. 1 It may be composed of a positive electrode current collector 122 printed on one side of the resin layer 111b and a positive electrode active material layer 121 printed on one side of the positive electrode current collector 122.

At this time, the second metal layer 112a may be provided to have a relatively smaller area than the second resin layer 112b and may be formed to be located in the inner region of the second resin layer 112b. (112a) may be a copper layer.

For this reason, the second metal layer 112a can serve both as an exterior material constituting the second exterior material 112 and as a negative electrode current collector 132 constituting the cathode 130.

As another example, as shown in FIG. 4, in the printed battery 100 according to another embodiment of the present invention, the first exterior material 111 forms the first resin layer 111b that forms the outer surface and the inner surface. It may include a first metal layer 111a, and a positive electrode active material layer 121 may be printed on one surface of the first metal layer 111a. In addition, the second exterior material 112 may include a second resin layer 112b forming an outer surface and a second metal layer 112a forming an inner surface, and a negative active material is formed on one surface of the second metal layer 112a. Layer 131 may be printed.

Through this, in this embodiment, the first metal layer 111a and the positive electrode active material layer 121 printed on one side of the first metal layer 111a can constitute the positive electrode 120, and the second metal layer ( 112a) and the negative electrode active material layer 131 printed on one side of the second metal layer 112a may constitute the negative electrode 130.

At this time, the first metal layer 111a may be an aluminum layer formed to have a relatively smaller area than the first resin layer 111b and located in the inner region of the first resin layer 111b, and the second The metal layer 112a may be a copper layer formed to have a relatively smaller area than the second resin layer 112b and located in the inner region of the second resin layer 112b.

For this reason, the first metal layer 111a can serve both as an exterior material constituting the first exterior material 111 and as a positive electrode current collector 122 constituting the positive electrode 120, and the second metal layer 112a ) can serve both as an exterior material constituting the second exterior material 112 and as a negative electrode current collector 132 constituting the cathode 130.

As such, the printed battery 100 according to an embodiment of the present invention includes the first metal layer 111a included in the first exterior material 111 and the second metal layer 112a included in the second exterior material 112. There is an advantage in reducing manufacturing costs and reducing overall thickness by using at least one of them as a current collector to form the anode or cathode.

The separator 140 is disposed between the anode 120 and the cathode 130 to prevent short circuit between the anode 120 and the cathode 130.

To this end, the separator 140 may be formed as a plate-shaped member with a predetermined area and may be disposed between the positive electrode active material layer 121 and the negative electrode active material layer 131.

In addition, the separator 140 may be provided to have a relatively larger area than the total area of the positive electrode active material layer 121 and the negative electrode active material layer 131.

At this time, the separator 140 may be a known kraft paper, but may be formed of a porous substrate to promote movement between ions while improving flexibility.

For example, the separator 140 may be formed of a nanofiber web layer.

As a non-limiting example, the separator 140 may include a non-woven fabric layer and a nanofiber web layer formed on one or both sides of the non-woven fabric layer.

Here, the nanofiber web layer may be formed of nanofibers containing one or more types selected from polyacrylonitrile nanofibers and polyvinylidene fluoride nanofibers.

Additionally, when a gel polymer electrolyte solution is used as the electrolyte solution, the separator 140 may be a composite porous separator to optimize the impregnability of the gel polymer electrolyte solution.

That is, the composite porous separator is used as a support (matrix) and may include a porous nonwoven fabric with micropores and a porous nanofiber web formed of a spinnable polymer material and impregnated with an electrolyte solution.

However, the material of the separator 140 is not limited to this, and may be composed only of a non-woven fabric layer or a nanofiber web layer.

Meanwhile, the electrolyte may be a liquid electrolyte, but preferably a gel electrolyte may be used. As a non-limiting example, the gel electrolyte may be a gel polymer electrolyte.

At this time, the gel polymer electrolyte may be heat-treated using an organic electrolyte alone, but when the separator is a porous substrate, heat treatment is performed while the porous substrate is impregnated with an organic electrolyte solution, so that the gel polymer is impregnated into the pores formed in the porous substrate. It can also be implemented in this form.

In addition, the gel polymer electrolyte may be printed on at least one side of the separator 140.

The adhesive member 160 may be disposed along the edges of the first exterior material 111 and the second exterior material 112 that face each other, and may be disposed along the edges of the first exterior material 111 and the second exterior material 112. Can be joined together.

Here, the adhesive member 160 may be an inorganic liquid or gel adhesive, or may be a double-sided tape with adhesive applied to both sides of the substrate.

Meanwhile, the above-described printing battery 100 can be used as the power supply unit 230 of the IOT device 200.

For example, the IOT device 200 may be a data logger device that can track status information of logistics such as fresh food during the delivery or storage process, as shown in FIG. 5. Such an IOT device 200 is attached to a receptor (not shown) where the logistics are stored and can detect status information of the receptor.

As a non-limiting example, the IOT device 200 may include a sensing unit 220, a control unit (not shown), a power supply unit 230, and a cover member 240.

The sensing unit 220 can detect status information of the logistics or the container where the logistics are stored.

That is, the sensing unit 220 can detect at least one of the storage temperature of the goods, storage time of the goods, external shock applied to the goods, illumination intensity, and acceleration of the goods. Through this, the sensing unit 220 can detect whether an abnormal condition occurs in the logistics or receptor.

To this end, the sensing unit 220 may be at least one sensor mounted on the flexible circuit board 210. As a specific example, the sensor may include at least one of a temperature sensor, a humidity sensor, an acceleration sensor, an illumination sensor, and a UV sensor. Preferably, the sensing unit 220 includes at least one type of sensor to obtain various information. It may consist of two or more sensors.

The overall operation of the sensing unit 220 can be controlled through the control unit, and the control unit can receive driving power from the power supply unit 230. In addition, power supply from the power supply unit 230 to the control unit can be turned on/off through user manipulation of a physical switch (not shown) electrically connected to the control unit, or through an energy harvesting method without using a physical switch. Power supply may be initiated through an authentication method using NFC.

In addition, when an abnormal condition occurs on the logistics or receptor side based on the information measured through the sensing unit 220, the IOT device 200 externally displays that the abnormal condition has occurred through control of the control unit. A separate display unit (not shown) may be provided.

The power supply unit 230 may be electrically connected to the flexible circuit board 210 to provide driving power to the control unit.

Such a power supply unit 230 may be composed of the above-described printing battery 100 to reduce the overall weight and volume.

In addition, the power supply unit 230 may be a primary battery or a reusable secondary battery, and when the power supply unit 230 is composed of a secondary battery, the power supply unit 230 can transmit wireless power. Recharging can also be done using this method.

The control unit may control the overall operation of the IOT device 200 as described above.

For example, the control unit can generate valid information based on a signal detected from the sensing unit 220 and control on/off driving of the IOT device 200.

To this end, the control unit may include at least one circuit element mounted on one surface of the flexible printed circuit board 210. As a specific example, the control unit may be a system semiconductor such as an MCU.

At this time, the IOT device 200 according to an embodiment of the present invention may further include a memory unit (not shown) for storing various information obtained through the sensing unit 220.

Such a memory unit can serve as a storage medium that stores various information acquired through the sensing unit 220, and all various information generated when the IOT device 200 is driven can be stored. As a specific example, the memory unit may be a memory semiconductor such as NVM.

In addition, the IOT device 200 according to an embodiment of the present invention may further include a communication unit for transmitting and receiving data through wireless communication.

That is, the communication unit may include an antenna pattern 250 formed on one surface of the flexible circuit board 210.

Such a communication unit can transmit information stored in the memory unit to an external electronic device through a wireless method. Here, the external electronic device may be an electronic device with a built-in wireless communication module corresponding to the communication unit, or may be a portable terminal such as a smartphone.

As a specific example, the communication unit may be an NFC antenna module including an antenna pattern 250 formed on one surface of the flexible circuit board 210.

Accordingly, when a mobile terminal with a built-in NFC antenna module is tagged on the antenna pattern 250, the information stored in the memory unit can be transmitted to the mobile terminal.

Accordingly, the user or worker can easily check the information stored through the sensing unit 220 during the delivery or storage process of the logistics, thereby confirming information about abnormal conditions occurring during the delivery or storage process of the logistics.

However, the use of data information using the memory unit and communication unit is not limited to this, and various data measured through the sensing unit 220 may be directly transmitted to a server or electronic device located at a long distance or nearby through the communication unit. It may be possible.

The cover member 240 can prevent the flexible circuit board 210 as well as the above-described sensing unit 220, control unit, communication unit, and power supply unit 230 from being exposed to the outside.

That is, the cover member 240 is provided to cover both sides of the flexible printed circuit board 210, thereby exposing the flexible printed circuit board 210, the sensing unit 220, the control unit, the communication unit, and the power supply unit 230 to the outside. can be prevented.

At this time, the cover member 240 may be made of a material having flexibility, similar to the flexible circuit board 210.

Through this, the IOT device 200 according to an embodiment of the present invention can secure flexibility through the flexible circuit board 210 and the cover member 240, so that it is bent in a curved area similar to a sticker. It can be attached.

For example, the cover member 240 may be in the form of a sheet such as a fluoropolymer resin such as PET, PP, PE, or release paper, or may be in the form of a molding covered with a resin material such as silicone or polyurethane. there is. However, the material of the cover member 240 is not limited to this, and any material with flexibility can be used without limitation.

Although one embodiment of the present invention has been described above, the spirit of the present invention is not limited to the embodiment presented in the present specification, and those skilled in the art who understand the spirit of the present invention can add components within the scope of the same spirit. , other embodiments can be easily proposed by change, deletion, addition, etc., but this will also be said to be within the scope of the present invention.

100: printing battery 110: exterior material
111: first exterior material 111a: first metal layer
111b: first resin layer 112: second exterior material
112a: second metal layer 112b: second resin layer
120: positive electrode 121: positive electrode active material layer
122: positive electrode current collector 123: positive terminal
130: negative electrode 131: negative electrode active material layer
132: Negative current collector 133: Negative terminal
140: Separator 150: Electrolyte
160: Adhesive member 200: IOT device
210: Flexible circuit board 220: Sensing unit
230: power supply unit 240: cover member
250: Antenna pattern

Claims (11)

A plate-shaped first exterior material including a first resin layer and a first metal layer formed on one surface of the first resin layer to form an inner surface;
A positive electrode active material layer printed to a predetermined area on one side of the first metal layer;
A plate-shaped second exterior material including a second metal layer and a pair of second resin layers respectively disposed on both sides of the second metal layer;
a negative electrode printed to a predetermined area on the inner surface of the second exterior material;
a plate-shaped separator disposed between the positive electrode active material layer and the negative electrode; and
It includes an adhesive member that joins the edges of the first exterior material and the second exterior material to each other,
The first metal layer forms the inner surface of the first exterior material, serves as a moisture barrier, and also serves as a current collector for the positive electrode on which the positive active material layer is printed. According to paragraph 1,
The first metal layer is provided to have a relatively smaller area than the first resin layer and is formed to be located in an inner region of the first resin layer. A plate-shaped first exterior material including a first metal layer and a pair of first resin layers respectively disposed on both sides of the first metal layer;
an anode printed to a predetermined area on the inner surface of the first exterior material;
A plate-shaped second exterior material including a second resin layer and a second metal layer formed on one surface of the second resin layer to form an inner surface;
a negative electrode active material layer printed to a predetermined area on one side of the second metal layer;
a plate-shaped separator disposed between the positive and negative electrode active material layers; and
It includes an adhesive member that joins the edges of the first exterior material and the second exterior material to each other,
The second metal layer forms the inner surface of the second exterior material, serves as a moisture barrier, and also serves as a current collector for the negative electrode on which the negative electrode active material layer is printed. According to paragraph 3,
The second metal layer is provided to have a relatively smaller area than the second resin layer and is formed to be located in an inner region of the second resin layer. A plate-shaped first exterior material including a first resin layer and a first metal layer formed on one surface of the first resin layer to form an inner surface;
A positive electrode active material layer printed to a predetermined area on one side of the first metal layer;
A plate-shaped second exterior material including a second resin layer and a second metal layer formed on one surface of the second resin layer to form an inner surface;
a negative electrode active material layer printed to a predetermined area on one side of the second metal layer;
a plate-shaped separator disposed between the positive electrode active material layer and the negative electrode active material layer; and
It includes an adhesive member that joins the edges of the first exterior material and the second exterior material to each other,
The first metal layer forms the inner surface of the first exterior material, serves as a moisture barrier layer, and also serves as a current collector for the positive electrode on which the positive electrode active material layer is printed.
The second metal layer forms the inner surface of the second exterior material, serves as a moisture barrier, and also serves as a current collector for the negative electrode on which the negative electrode active material layer is printed. According to clause 5,
The first metal layer is an aluminum layer formed to have a relatively smaller area than the first resin layer and located in the inner region of the first resin layer,
The printed battery is a copper layer in which the second metal layer has a relatively smaller area than the second resin layer and is located in an inner region of the second resin layer. A sensing unit mounted on one side of a flexible printed circuit board and including a sensor for detecting at least one piece of information;
a control unit that controls the operation of the sensing unit;
a power supply unit that provides driving power to the control unit; and
It includes a cover member that prevents the sensing unit, control unit, and power supply unit from being exposed to the outside,
The power supply unit is an IOT device that is a printing battery according to any one of claims 1 to 6. delete delete delete delete

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