KR101602832B1 - Package of battery protection circuits having NFC antenna and battery pack including the same - Google Patents

Abstract

The present invention relates to a battery protection circuit package which is advantageous for integration and miniaturization, and a battery pack having the same. An antenna structure mounted on the substrate, the antenna structure comprising an NFC antenna; And a battery protection circuit element disposed on the substrate, the battery protection circuit element including a protection IC, a field effect transistor (FET), and at least one passive element.

Description

[0001] The present invention relates to a battery protection circuit package including an NFC antenna and a battery pack having the battery protection circuit package.

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a battery protection circuit package and a battery pack having the battery protection circuit package, and more particularly, to a protection circuit package and a battery pack having the same.

Near Field Communication (NFC) is a non-contact short-range wireless communication standard that enables wireless communication between electronic devices at a short distance within 10 cm using a frequency of 13.56 MHz. It was developed jointly by NXP Semiconductor and Sony Japan. NFC's transmission rates per second are 106 Kbps, 212 Kbps, 424 Kbps or 848 Kbps. Its proximity characteristics and encryption technology provide excellent security and it is possible to identify devices without any complicated pairing procedure. There is an advantage that it can be recognized. In particular, NFC is a smart card type non-contact wireless communication technology that utilizes RFID technology. It is bi-directional compared to a smart card, has a relatively large storage memory space, and has a wide range of applicable services. Accordingly, this technology has been introduced to electronic devices such as smart phones and tablet PCs, which have recently been commercialized.

On the other hand, batteries are used in portable terminals such as smart phones and tablet PCs. Lithium-ion batteries are the most widely used batteries in portable handsets, but they also generate heat during overcharging and overcurrent, and when the temperature rises due to heat generation, they may deteriorate performance as well as the risk of explosion. Therefore, a conventional battery is equipped with a protection circuit device that detects and blocks overcharge, over-discharge, and over-current, or a protection circuit structure that detects overcharge, over-discharge, do.

Recently, NFC antennas are combined with the battery of the portable terminal. However, in this case, a process of separately coupling the NFC antenna to the battery is additionally required, which increases the manufacturing cost. Further, The size of the battery is increased.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the various problems including the above-described problems and to realize integration and miniaturization of a battery pack having an NFC antenna. Further, it is an object of the present invention to provide a battery protection circuit package constituting such a battery pack. However, these problems are exemplary and do not limit the scope of the present invention.

A battery protection circuit package according to an aspect of the present invention can be provided. The battery protection circuit package may be electrically connected to an electrode terminal of a battery bare cell. At least one antenna structure mounted on the substrate, the antenna structure comprising an NFC antenna; And a battery protection circuit element mounted on the substrate, the protection circuit element including a protection IC, a field effect transistor (FET), and at least one passive element.

In the battery protection circuit package, the antenna structure may have a chip shape.

In the battery protection circuit package, the antenna structure may include an inductor capable of resonating in an NFC frequency band.

In the battery protection circuit package, when the antenna structure includes a coil having a first winding direction, and a side surface of the battery bare cell is configured to have a narrow surface from a wide surface, a direction of a magnetic field induced in the inductor, And may be perpendicular to the wide face of the bare cell.

In the battery protection circuit package, the at least one antenna structure includes a plurality of antenna structures spaced from each other, wherein each of the plurality of antenna structures includes a coil having the same winding direction, The direction of the magnetic field induced in the inductor may be perpendicular to the wide surface of the side surface of the battery bare cell.

In the battery protection circuit package, the at least one antenna structure includes a plurality of antenna structures spaced from one another, and some antenna structures of the plurality of antenna structures include a coil having a first winding direction, The antenna structure of the other antenna structure includes a coil having a second winding direction perpendicular to the first winding direction, and when the side surface of the battery bare cell is composed of a wide surface and a narrow surface, Direction of the magnetic field induced in the coils having the second winding direction is perpendicular to the wide surface of the side surfaces of the battery bare cell and the direction of the magnetic field induced in the coil having the second winding direction is perpendicular to the narrow- Lt; / RTI >

The battery protection circuit package may further include an encapsulant sealing the antenna structure and the battery protection circuit element.

In the battery protection circuit package, the substrate includes leads for a first internal connection terminal and a lead for a second internal connection terminal, which are respectively disposed at both edge portions and are electrically connected to the electrode terminals of the battery bare cell; And a lead for an external connection terminal which is disposed between the lead for the first internal connection terminal and the lead for the second internal connection terminal and constitutes a plurality of external connection terminals, Is an NFC external connection terminal and further includes an electrical connecting member for electrically connecting any two selected from the group consisting of the antenna structure, the protection IC, the field effect transistor, and the plurality of leads, The battery protection circuit can be constituted without using the printed circuit board of FIG.

In the battery protection circuit package, at least one selected from the antenna structure, the protection IC, and the field effect transistor is not inserted and fixed in the form of a semiconductor package on the lead frame, Can be mounted and fixed on at least a part of the surface in the form of a chip die which is not sealed with a separate sealing material.

In the battery protection circuit package, the substrate may include a printed circuit board.

A battery pack according to another aspect of the present invention can be provided. The battery pack includes a battery bare cell; A battery protection circuit package electrically connected to an electrode terminal of the battery bare cell and including the NFC antenna; And a through hole formed on the upper surface of the battery bare cell and interposed between the battery protection circuit package including the NFC antenna and the external connection terminals of the battery protection circuit package including the NFC antenna, And an upper case.

In the battery pack, the battery protection circuit package is disposed on both sides of a negative terminal of the battery bare cell, and the antenna structure is disposed on one side of the battery terminal, The circuit element may be disposed on the other side of the negative terminal of the battery bare cell.

In the battery pack, the battery protection circuit package is disposed at only one side of the battery terminal, and the antenna structure and the battery protection circuit element are disposed on one side of the battery terminal, .

The battery pack may further include a holder interposed between the upper surface of the battery bare cell and the battery protection circuit package, wherein the holder has at least a part of the battery protection circuit package disposed inside the injection mold, And may be formed by bonding the battery protection circuit package by insert injection molding.

In the battery pack, the upper case may include at least a part of the battery protection circuit package disposed on the battery bare cell and the battery bare cell disposed inside the injection mold, injecting the resin melt, and performing insert injection molding , The battery bare cell, and the battery protection circuit package.

A battery pack according to another aspect of the present invention can be provided. The battery pack includes a battery bare cell; A battery protection circuit package disposed on one side of the upper surface of the battery bare cell and incorporating a protection IC, a field effect transistor (FET), and at least one passive element disposed on the first substrate; An antenna package having at least one antenna structure disposed on the other side of the upper surface of the battery bare cell and including an NFC antenna disposed on the second substrate; And a through hole formed on an upper surface of the battery bare cell and interposed between the battery protection circuit package and the antenna package, the through hole being formed such that at least one external connection terminal of the battery protection circuit package and the antenna package is exposed. And an upper case.

In the battery pack, the battery protection circuit package and the antenna package are spaced apart from each other with respect to a negative terminal of the battery bare cell, and at least a part of the battery protection circuit package and at least a part of the antenna package, And can be fixedly connected to the upper surface of the cell.

In the battery pack, the antenna structure may have a chip shape.

In the battery pack, the antenna structure may include an inductor capable of resonating in an NFC frequency band.

In the battery pack, when the antenna structure includes a coil having a first winding direction, and a side surface of the battery bare cell is configured to have a narrow width from a wide surface, a direction of a magnetic field induced in the inductor is ≪ / RTI >

In the battery pack, the at least one antenna structure includes a plurality of antenna structures spaced from each other, wherein each of the plurality of antenna structures includes a coil having the same winding direction, The direction of the magnetic field induced in the inductor may be perpendicular to the wide surface of the side of the battery bare cell.

In the battery pack, the at least one antenna structure includes a plurality of antenna structures spaced from each other, and an antenna structure of the plurality of antenna structures includes a coil having a first winding direction, The remaining antenna structure includes a coil having a second winding direction perpendicular to the first winding direction, and when the side surface of the battery bare cell is configured to have a narrow width from the wide surface, the first winding direction The direction of the magnetic field induced in the coil is perpendicular to the wide surface of the side of the battery bare cell and the direction of the magnetic field induced in the coil having the second winding direction is perpendicular to the narrowed surface have.

The battery pack further includes a holder interposed between the upper surface of the battery bare cell and the battery protection circuit package and the antenna package, wherein the holder includes at least a part of the antenna package disposed inside the injection mold, And may be formed by joining with the antenna package by injection injection molding.

In the battery pack, the upper case includes at least a part of the battery protection circuit package disposed on the battery bare cell and the battery bare cell and at least a part of the antenna package, and the resin melt The battery protection cell package, and the antenna package by inserting and injection-molding the battery bare cell, the battery protection circuit package, and the antenna package.

According to some embodiments of the present invention as described above, a battery protection circuit package advantageous for integration and miniaturization and a battery pack having the battery protection circuit package can be realized by a simple process. Of course, the scope of the present invention is not limited by these effects.

1A is a circuit diagram of a battery protection circuit to be implemented by a part of a battery protection circuit package according to a comparative example of the present invention.
1B is a diagram illustrating a configuration of a general short range wireless communication (NFC).
2 is an exploded perspective view of a battery pack having a battery protection circuit package according to a comparative example of the present invention.
3 is a perspective view of a battery protection circuit package according to a comparative example of the present invention.
4 is an assembled perspective view of a battery pack having a battery protection circuit package according to a comparative example of the present invention.
5 is an exploded perspective view of a battery pack having a battery protection circuit package according to an embodiment of the present invention.
6A is a partial perspective view of a battery protection circuit package according to an embodiment of the present invention.
6B is a perspective view of a battery protection circuit package according to a modified embodiment of the present invention.
7 is an assembled perspective view of a battery pack having a battery protection circuit package according to an embodiment of the present invention.
8 is an exploded perspective view of a battery pack having a battery protection circuit package according to another embodiment of the present invention.
9 is a perspective view of a battery protection circuit package according to another embodiment of the present invention.
10 is an exploded perspective view of a battery pack having a battery protection circuit package and an antenna package according to another embodiment of the present invention.
11 is a perspective view of a battery protection circuit package according to another embodiment of the present invention.
12 is a perspective view of an antenna package according to another embodiment of the present invention.
13 is an assembled perspective view of a battery pack having a battery protection circuit package and an antenna package according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The embodiments of the present invention are described in order to more fully explain the present invention to those skilled in the art, and the following embodiments may be modified in various other forms, The present invention is not limited to the embodiment. Rather, these embodiments are provided so that this disclosure will be more thorough and complete, and will fully convey the concept of the invention to those skilled in the art. In the drawings, the thickness and size of each layer are exaggerated for convenience and clarity of explanation.

It is to be understood that throughout the specification, when an element such as a film, region or substrate is referred to as being "on", "connected to", "laminated" or "coupled to" another element, It is to be understood that elements may be directly "on", "connected", "laminated" or "coupled" to another element, or there may be other elements intervening therebetween. On the other hand, when one element is referred to as being "directly on", "directly connected", or "directly coupled" to another element, it is interpreted that there are no other components intervening therebetween do. Like numbers refer to like elements. As used herein, the term "and / or" includes any and all combinations of one or more of the listed items.

Although the terms first, second, etc. are used herein to describe various elements, components, regions, layers and / or portions, these members, components, regions, layers and / It is obvious that no. These terms are only used to distinguish one member, component, region, layer or section from another region, layer or section. Thus, a first member, component, region, layer or section described below may refer to a second member, component, region, layer or section without departing from the teachings of the present invention.

Also, relative terms such as "top" or "above" and "under" or "below" can be used herein to describe the relationship of certain elements to other elements as illustrated in the Figures. Relative terms are intended to include different orientations of the device in addition to those depicted in the Figures. For example, in the figures the elements are turned over so that the elements depicted as being on the top surface of the other elements are oriented on the bottom surface of the other elements. Thus, the example "top" may include both "under" and "top" directions depending on the particular orientation of the figure. If the elements are oriented in different directions (rotated 90 degrees with respect to the other direction), the relative descriptions used herein can be interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a," "an," and "the" include singular forms unless the context clearly dictates otherwise. Also, " comprise "and / or" comprising "when used herein should be interpreted as specifying the presence of stated shapes, numbers, steps, operations, elements, elements, and / And does not preclude the presence or addition of one or more other features, integers, operations, elements, elements, and / or groups.

Hereinafter, embodiments of the present invention will be described with reference to the drawings schematically showing ideal embodiments of the present invention. In the figures, for example, variations in the shape shown may be expected, depending on manufacturing techniques and / or tolerances. Accordingly, the embodiments of the present invention should not be construed as limited to the particular shapes of the regions shown herein, but should include, for example, changes in shape resulting from manufacturing.

In the embodiments of the present invention, the lead frame may be divided into a structure in which the lead terminals are patterned on the metal frame, and a structure and thickness of the lead frame are different from those of the printed circuit board on which the metal wiring layer is formed.

FIG. 1A is a circuit diagram of a battery protection circuit to be implemented by a part of a battery protection circuit package according to a comparative example of the present invention, and FIG. 1B is a diagram illustrating a configuration of a general short range wireless communication (NFC). FIG. 3 is a perspective view of a battery protection circuit package according to a comparative example of the present invention, and FIG. 4 is a perspective view of a battery protection circuit package according to a comparative example of the present invention FIG. 2 is a perspective view illustrating a battery pack according to an embodiment of the present invention; FIG.

The battery protection circuit to be implemented by a part of the battery protection circuit package according to the embodiment of the present invention is different from the protection circuit according to the comparative example of the present invention shown in FIG. 1A except that the NFC connection terminals PD1 and PD2 are not provided Can be the same.

Referring to FIG. 1A, the battery protection circuit 10 includes first and second internal connection terminals B + and B- connected to a battery cell, and is connected to a charger during charging. (P +, CF, P-) for connection with an electronic device (e.g., a portable terminal or the like). Here, the first external connection terminal P + and the third external connection terminal P- of the first to third external connection terminals P +, CF, and P- are for power supply and the other is an external connection terminal The second external connection terminals (CF, ID) are, for example, divided into batteries and charged according to the batteries. The second external connection terminals CF and ID may be a thermistor which is a part for sensing the battery temperature during charging, and may be used as a terminal to which other functions are applied.

The battery protection circuit 10 is connected to the connection structure of the dual FET chip 110, the protection integrated circuit 120, the resistors R1, R2 and R3, the varistor V1 and the capacitors C1 and C2 . The dual FET chip 110 includes a first field effect transistor (FET1) and a second field effect transistor (FET2) having a drain common structure. The protection IC 120 is connected to the first internal connection terminal B + which is the positive terminal of the battery through the resistor R1 and is connected to the first node n1 through the first node n1, A terminal (VDD terminal) for sensing a voltage application and a battery voltage, a reference terminal (VSS terminal) serving as a reference for an operation voltage inside the protection IC 110, a sensing terminal (V- A discharge cutoff signal output terminal (DO terminal) for turning off the first field effect transistor FET1 in the overdischarge state, a charge cutoff signal output terminal C0 for turning off the second field effect transistor FET2 in the overcharge state, Terminal).

At this time, the inside of the protection IC 120 includes a reference voltage setting unit, a comparison unit for comparing the reference voltage with the charge / discharge voltage, an overcurrent detection unit, and a charge / discharge detection unit. Here, the criterion of charging and discharging states can be changed to a specification (SPEC) required by the user, and the charging / discharging state is determined by recognizing the voltage difference of each terminal of the protection IC 120 according to the determined standard.

When the protection IC 120 reaches an over-discharge state at the time of discharging, the DO terminal becomes LOW to turn off the first field effect transistor FET1, and when the overcharge state is reached, the CO terminal becomes low, The field effect transistor FET2 is turned off and the second field effect transistor FET2 is turned off at the time of charging when the overcurrent flows and the first field effect transistor FET1 at the time of discharging.

The resistor R1 and the capacitor C1 serve to stabilize the variation of the power supply of the protection IC 120. [ The resistor R1 is connected between the first node n1 which is the supply node of the battery power supply V1 and the VDD terminal of the protection IC 120 and the capacitor C1 is connected between the VDD terminal and the VSS terminal of the protection IC do. Here, the first node n1 is connected to the first internal connection terminal B + and the first external connection terminal P +. When the resistance R1 is increased, the detection voltage becomes higher due to the current penetrated into the protection IC 120 at the time of voltage detection. Therefore, the value of the resistor R1 is set to an appropriate value of 1 K or less. Also, for stable operation, the value of the capacitor C1 has an appropriate value of 0.01 mu F or more.

And the resistors R1 and R2 become current limiting resistors when the high voltage charger or charger exceeding the absolute maximum rating of the protection IC 120 is connected upside down. The resistor R2 is connected between the V- terminal of the protection IC 120 and the second node n2 to which the source terminal S2 of the second field effect transistor FET2 is connected. Since the resistors R1 and R2 may cause power consumption, the sum of the resistance values of the resistors R1 and R2 is usually set to be larger than 1 K ?. If the resistance R2 is too large, the return may not occur after the overcharge cutoff, so that the value of the resistance R2 is set to a value of 10K or less.

The capacitor C2 is connected to the source terminal S1 of the first node n2 (or the third external connection terminal P-) and the first field effect transistor FET1 (or the VSS terminal, the second internal connection terminal B -)). The capacitor C2 does not significantly affect the characteristics of the battery protection circuit product, but is added for user's request or stability. The capacitor C2 is for stabilizing the system by improving the resistance to voltage fluctuation and external noise.

The resistor R3 and the varistor V1 are elements for ESD (Electrostatic Discharge) and surge protection and are connected in parallel to each other. The second external connection terminal CF and the second node n2 Or the third external connection terminal P-). The resistance of the varistor (V1) is lowered when an overvoltage occurs. When the overvoltage is generated, the resistance of the varistor (V1) is lowered, thereby minimizing circuit damage due to overvoltage.

Meanwhile, in addition to the configuration of the battery protection circuit described above, an NFC circuit 141 may be added to support Near Field Communication (NFC). The added NFC circuit 141 may include, for example, an NFC external connection terminal NFC1, NFC connection terminals PD1 and PD2, and NFC matching elements C3, C4, C5, and C6. The NFC connection terminals PD1 and PD2 disclosed in the circuit diagram of FIG. 1A are implemented as terminals 60-1 and 60-2 in the package 300a shown in FIG. 3, (472, 474 of Figure 2) of the NFC antenna (470 of Figures 2 and 4) being deployed. The NFC antenna 470 may be, for example, a loop-shaped antenna. When the ends 472 and 474 of the NFC antenna are brought into contact with the NFC connection terminals PD1 and PD2, the NFC matching elements C3, C4, C5, and C6 are electrically connected to the NFC antenna 470, loop can be formed. The NFC matching elements C3, C4, C5, and C6 may be, for example, capacitors for frequency matching. For example, both ends 472 and 474 of the NFC antenna 470 are connected to capacitors, which are the NFC matching elements, to form a closed loop, and the NFC antenna 470 and the capacitors C3, C4, By using the generated resonance, a frequency region for NFC communication of 13.56 MHz can be generated and communicated with the NFC device.

Referring to FIG. 1B, a typical short range wireless communication (NFC) configuration includes an NFC control integrated circuit 142, a buffer chip 144, and a reader 148. A first inductor 146 and a second inductor 147 are provided between the waveguide chip 144 and the reader 148 and a first capacitor portion 145 is provided between the waveguide chip 144 and the first inductor 146, May be provided. A second capacitor portion 143 may be provided between the NFC control integrated circuit portion 142 and the idler chip 144.

The NFC antenna 470 corresponds to the first inductor 146 shown in FIG. 1B and the capacitors C3, C4, C5, and C6 correspond to the first capacitor 145 shown in FIG. 1B. do. The first inductor 146 and the first capacitor portion 145 are connected to the NFC control integrated circuit portion 142, the second capacitor portion 143 and the breaker chip 144 through the NFC external connection terminal NFC1 .

2 to 4, in the battery protection circuit package and the battery pack according to the comparative example of the present invention, the NFC antenna 470 is disposed over the side surface of the battery bare cell 400 constituting the battery pack 600a do. The ends 472 and 474 of the NFC antenna 470 may be bonded to the terminal pads 60-1 and 60-2 of the battery protection circuit package 300a by, for example, a soldering process. However, since the battery protection circuit package 300a for the antenna soldering process requires the configuration of the terminal pads 60-1 and 60-2, it is disadvantageous in downsizing the package and involves a limitation in securing the space inside the package. Meanwhile, the manufacturing process of the battery pack may be complicated by the antenna soldering process. In addition, the joint portion between the NFC antenna 470 and the battery protection circuit package 300a is weak in structure, so that the shear strength may be low in view of the overall structure.

The battery protection circuit package according to embodiments of the present invention overcomes the above-mentioned problems by having the antenna structure including the NFC antenna.

FIG. 5 is an exploded perspective view of a battery pack having a battery protection circuit package according to an embodiment of the present invention, FIG. 6A is a partial perspective view of a battery protection circuit package according to an embodiment of the present invention, FIG. FIG. 7 is a perspective view illustrating a battery pack having a battery protection circuit package according to an embodiment of the present invention. FIG. 7 is a perspective view illustrating a battery protection circuit package according to a modified embodiment of the present invention.

5, 6A and 7, a battery protection circuit package 300b according to an embodiment of the present invention is a package that can be electrically connected to the electrode terminals 410 and 430 of the battery bare cell 400 , Substrates (50, 60); An antenna structure (140) mounted on the substrate (50, 60) and comprising an NFC antenna; And a battery protection circuit element. The battery protection circuit element is disposed on the substrates 50 and 60 and includes a protection IC 120, a field effect transistor 110, and at least one passive element 130. Here, the first substrate 50 is a lead frame composed of a plurality of leads 50-1 to 50-6 spaced from each other, and the second substrate 60 is a lead frame, And an antenna structure 140 and the battery protection circuit element may be mounted on the second substrate 60. [ If desired, the battery protection circuit package 300b according to an embodiment of the present invention may further include an encapsulant 250. The encapsulant 250 may seal at least one of the battery protection circuit element and the antenna structure 140. For example, the encapsulant 250 may seal the battery protection circuit element and the antenna structure 140 integrally. As another example, the encapsulant 250 may be spaced apart from each other and may seal the battery protection circuit element and the antenna structure 140, respectively.

5, 6B and 7, a battery protection circuit package 300b according to a modified embodiment of the present invention includes a package 300b electrically connected to the electrode terminals 410 and 430 of the battery bare cell 400, , Comprising: a substrate (60); An antenna structure (140) mounted on the substrate (60) and comprising an NFC antenna; And a battery protection circuit element. The battery protection circuit element is disposed on a substrate 60 and includes a protection IC 120, a field effect transistor 110, and at least one passive element 130. Here, the substrate 60 is a printed circuit board, and the antenna structure 140 and the battery protection circuit element may be mounted on the printed circuit board. Both ends of the substrate 60, which is a printed circuit board, may be bonded to a lead 55 that can be electrically connected to the battery bare cell.

Meanwhile, in the battery protection circuit package according to another embodiment of the present invention, the battery protection circuit element and the substrate on which the antenna structure can be mounted may be composed of a lead frame composed of a plurality of leads separated from each other. A detailed description thereof will be given later.

One of the main technical ideas of the present invention is that the battery protection circuit package has at least one antenna structure including an NFC antenna, and hereinafter, such an antenna structure will be described in detail.

The antenna structure 140 constituting the battery protection circuit package according to some embodiments of the present invention may, for example, be in the form of a chip.

The antenna structure 140 constituting the battery protection circuit package according to some embodiments of the present invention may include an inductor capable of resonating in the NFC frequency band wherein the inductor Corresponds to the first inductor 146 shown in FIG. 1B, and can replace the NFC antenna 470 constituting the battery protection circuit package 300a according to the comparative example of the present invention shown in FIG.

Further, the antenna structure 140 constituting the battery protection circuit package according to the modified embodiments of the present invention includes the first capacitor portion 145, the second capacitor portion 143, and the NFC control integrated circuit portion 140 shown in FIG. 1B. (142). ≪ / RTI >

3) by introducing an antenna structure 140 including an NFC antenna in a battery protection circuit package 300b according to some embodiments of the present invention. Since the configuration is unnecessary, the package can be miniaturized and it may be advantageous to secure a space inside the package. Also, since the antenna soldering process can be omitted, the manufacturing process of the battery pack can be simplified. Furthermore, it is possible to improve the shear strength from the viewpoint of the overall structure by mounting and sealing the NFC antenna in a chip form inside the battery protection circuit package without disposing a film-shaped NFC antenna outside the battery protection circuit package.

5, 6A, 6B and 7, the antenna structure 140 including the inductor capable of resonating in the NFC frequency band may have various winding structures.

As a first example, the winding structure shown in Figs. 6A and 6B (a) includes a coil having a first winding direction. For example, the winding structure may include a core 146a of nickel ferrite; And a coil 146c having a first winding direction wound in a direction parallel to the x-axis direction and the z-axis direction so as to surround the bobbin 146b. In this case, the direction of the induced magnetic field generated in conjunction with the NFC reader 148 is parallel to the y-axis direction. That is, when the side of the battery bare cell 400 is composed of a wide surface (plane perpendicular to the y-axis) and a narrow plane (plane perpendicular to the x-axis), the antenna structure 140 including the inductor The direction of the magnetic field may be perpendicular to the wide surface of the battery bare cell 400. In the case of having such a winding structure, near field communication can be realized when the wide side of the side of the NFC reader and the battery bare cell 400 are positioned side by side.

As a second example, in the battery protection circuit package, the antenna structure 140 including the winding structure shown in Figs. 6A and 6B (a) may be arranged in a plurality of spaced apart from each other. If the antenna structure 140 has a chip shape, the battery protection circuit package may include a plurality of chips including an NFC antenna. The description of each winding structure is the same as that described in the first example. That is, each of the plurality of antenna structures 140 includes a coil 146c having the same first winding direction, as shown in Figs. 6A and 6B (a), and the battery bare cell 400, The direction of the magnetic field induced in the antenna structures 140 is perpendicular to the direction of the magnetic field of the battery bare cell 400, And may be perpendicular to the wide surface. On the other hand, as a modified embodiment, when the antenna structure 140 has a chip shape, the battery protection circuit package has a single chip including an NFC antenna, A plurality of winding structures shown in Fig. Near field communication can be realized when the wide surfaces of the side surfaces of the NFC reader and the battery bare cell 400 are positioned in parallel with each other. In the case where the antenna structure 140 of the first example is used, The effect of improving the sensitivity of the magnetic field communication can be expected.

As a third example, the battery protection circuit package includes a plurality of antenna structures 140 spaced apart from one another, and some of the plurality of antenna structures may be formed as shown in Figs. 6A and 6B (a) , And a coil 146c having a first winding direction, and the remaining one of the plurality of antenna structures is formed so as to be perpendicular to the first winding direction as shown in Figs. 6A and 6B (b) And a coil 146c having a second winding direction. For example, the winding structure having the first winding direction may include a core 146a made of nickel ferrite; And a coil (146c) wound in a direction parallel to the x-axis direction and the z-axis direction so as to surround the bobbin (146b), and the winding structure having the second winding direction includes a core (146a) made of nickel ferrite; And a coil 146c wound in a direction parallel to the y-axis direction and the z-axis direction so as to surround the bobbin 146b. When the side of the battery bare cell 400 is composed of a wide surface (plane perpendicular to the y axis) and a narrow plane (plane perpendicular to the x axis), the direction of the magnetic field induced in the coil having the first direction of winding is The direction of the magnetic field induced in the coil having the second winding direction may be perpendicular to the narrow surface of the side of the battery bare cell 400. [

If the antenna structure 140 has a chip shape, the battery protection circuit package may include a first antenna structure in the form of a chip having the first winding direction winding structure and a chip type first antenna structure having the second winding direction winding structure. And the second antenna structure may be all provided. As another example, the battery protection circuit package may include a winding structure including a coil 146c having the first winding direction in a single chip including an NFC antenna, and a coil 146c having the second winding direction The winding structure can be provided. In the case of having such a winding structure, near field communication can be realized even if an arbitrary angle is formed between the NFC reader and the battery bare cell 400 without the wide faces being relatively aligned with each other, and the sensitivity of the near field communication An improvement effect can be expected.

On the other hand, the structure of the wing wire constituting the antenna structure 140 is exemplified by a winding structure in which a coil is wound around the core. However, the antenna structure according to the technical idea of the present invention is not limited to such a winding structure, and may be realized by patterning a conductive material, for example.

A battery protection circuit package 300b according to an embodiment of the present invention and a battery pack 600b having the same will be described in detail.

The battery bare cell 400 comprises an electrode assembly and a cap assembly. The electrode assembly includes a positive electrode plate formed by applying a positive electrode active material to a positive electrode collector, a negative electrode plate formed by applying a negative electrode active material to a negative electrode collector, and a negative electrode plate interposed between the positive electrode plate and the negative electrode plate. The separator may be made of a separator. The positive electrode tab attached to the positive electrode plate and the negative electrode tab attached to the negative electrode plate may be drawn out from the electrode assembly.

The cap assembly includes an anode terminal 410, a gasket (not shown), a cap plate 430, and the like. The cap plate 430 may serve as a positive electrode terminal. The cathode terminal 410 may be referred to as a cathode cell or an electrode cell. The gasket may be formed of an insulating material to insulate the cathode terminal 410 from the cap plate 430. Therefore, the electrode terminal of the battery bare cell may include the negative terminal 410 and the cap plate 430.

The holder 480 includes a body portion formed of resin and at least one through hole formed in the body portion. The holder 480 serves as a guide for mounting the battery protection circuit package 300b on the upper surface 430 of the battery bare cell 400. Further, And may be fixed on the upper surface 430 of the base 400. Further, the holder 480 may be combined with the case 600 to fix the case 600. [

The battery protection circuit package 300b includes first and second internal connection terminal leads 50-1 and 50-2 electrically connected to the electrode terminals 410 and 430 of the battery bare cell 400, Leads 50-6 for internal connection terminals; And the leads 50-2 and 50-3 disposed between the leads 50-1 and 50-6 for the first internal connection terminal and the plurality of external connection terminals, 50-3, 50-4, and 50-5.

For example, in the battery protection circuit package 300b together with the circuit diagram shown in FIG. 1A, a lead 50-1 for a first internal connection terminal corresponds to a first internal connection terminal (B + in FIG. 1A) The lead 50-2 for the second internal connection terminal corresponds to the second internal connection terminal (B- in Fig. 1A), and the lead 50-2 for the external connection terminal corresponds to the first external connection terminals P +), the external connection terminal lead 50-3 corresponds to the second external connection terminals (CF in FIG. 1A), the external connection terminal lead 50-4 corresponds to the third external connection terminals (P- in Fig. 1A), and the lead 50-5 for the external connection terminal may correspond to an NFC external connection terminal (NFC1 in Fig. 1A).

 Further, the battery protection circuit package 300b may further include an element package. The device package is disposed on the lead frame 50 so as to be electrically connected to the lead frame 50 and includes a printed circuit board 60 on which the battery protection circuit elements 110, 120, and 130 and the antenna structure 140 are mounted, . ≪ / RTI >

The configuration, number, arrangement, and the like of the protection IC 120, the field effect transistor 110, and the at least one passive element 130 constituting the battery protection circuit element can be appropriately modified in accordance with the additional function of the protection circuit In the following, an exemplary configuration will be described.

6, the arrangement of the dual FET chip 110 and the protection IC 120 may have a structure in which the dual FET chip 110 and the protection IC 120 are vertically stacked, As an embodiment, it may have a structure arranged adjacent to each other. For example, the protection ICs 120 may be stacked on the upper surface of the dual FET chip 110.

The dual FET chip 110 includes a first field effect transistor and a second field effect transistor having a common drain structure, that is, two field effect transistors (FETs), and an external terminal is connected to a first gate terminal And the second source terminal G2 and the second source terminal S2 of the second field effect transistor are provided on the upper surface of the dual FET chip 110. The first FET terminal G1 and the first source terminal S1, In addition, the common drain terminal D may be provided on the lower surface of the dual FET chip 110.

The protection ICs 120 may be stacked on the upper surface of the dual FET chip 110. The protection IC 120 is stacked on a region (for example, a central portion) excluding a portion where external terminals on the dual FET chip 110 are disposed. At this time, an insulating film for insulation may be disposed between the protection IC 120 and the dual FET chip 110, and the protection IC 120 and the dual FET chip 110 may be bonded with an adhesive of an insulating material.

After the protection IC 120 is stacked on the upper surface of the dual FET chip 110, the DO terminal DO of the protection IC 120 is electrically connected to the first gate terminal G1 via a wire or a wiring And the CO terminal (CO) of the protection IC 120 is electrically connected to the second gate terminal G2 through a wire or a wiring.

By installing the protection IC 120 and the dual FET chip 110 having such a laminated structure, the area to be mounted on the substrate can be reduced, thereby realizing miniaturization or high capacity of the battery.

The encapsulant 250 may seal the battery protection circuit elements 110, 120, and 130 mounted on the substrates 50 and 60 and the antenna structure 140 from the outside. The encapsulant 250 may comprise, for example, an epoxy molding compound (EMC). Referring to FIG. 6, the sealing material for sealing the battery protection circuit elements 110, 120, and 130 and the sealing material for sealing the antenna structure 140 may be integrally formed.

In a modified embodiment, the first encapsulant for sealing the battery protection circuit elements 110, 120, and 130 and the second encapsulant for sealing the antenna structure 140 may be spaced apart from each other. Also in this case, the first encapsulant and the second encapsulant may be simultaneously formed by a single process.

The upper case 500 may include a through hole 550 formed to expose the leads 50-2, 50-3, 50-4, and 50-5 for external connection terminals of the battery protection circuit package 300b . The upper case 500 may be coupled with the fastening member formed in the holder 480 and fixed on the upper surface of the battery bare cell 400.

Meanwhile, in the battery protection circuit package 300b according to the modified embodiment of the present invention, the substrate on which the battery protection circuit elements 110, 120, and 130 and the antenna structure 140 are mounted is not a printed circuit board 60 Only the lead frame 50 can be constituted. In this case, the battery protection circuit elements 110, 120, and 130 and the antenna structure 140 may be mounted using surface mounting techniques on at least a portion of the surface of the lead frame 50. Further, the protection ICs 120, the field effect transistors 110, and the plurality of leads 50-2, 50-3, 50-4, and 50-5 are electrically connected to any two selected from the group consisting of the protection ICs 120, By further including the connecting member, the battery protection circuit can be configured without using a separate printed circuit board. The electrical connecting member may include a bonding wire or a bonding ribbon.

It is an important advantage that the process of designing and manufacturing the lead frame 50 for constituting the battery protection circuit can be simplified because an electrical connecting member such as a bonding wire or a bonding ribbon is disposed on the lead frame 50 . If the electrical connecting member is not incorporated in the battery protection circuit in the modified embodiment of the present invention, the configuration of the plurality of leads constituting the lead frame 50 becomes very complicated, It may not be easy to effectively provide.

The antenna structure 140, the protection IC 120, and / or the field effect transistor 110 are formed on the lead frame 50 in the modified embodiment of the present invention, A chip die (not shown) is mounted on at least a part of the surface of the lead frame 50 by surface mounting technology, instead of being inserted and fixed in the form of a package, and may be mounted and fixed in the form of a chip die. Here, a chip die is a chip die, which is formed by performing a sowing process on a wafer on which a plurality of array structures (for example, a protection IC and a field effect transistor) are formed, ≪ / RTI > That is, when the antenna structure 140, the protection IC 120, and / or the field effect transistor 110 are mounted on the lead frame 50, they are mounted without being sealed in a separate sealing material, Since the antenna structure 140, the protection IC 120 and / or the field effect transistor 110 are sealed by the sealing material 250, the process of forming the sealing material in implementing the battery protection circuit package 300b is performed You can only do it once. On the other hand, when the passive element 130, the antenna structure 140, the protection IC 120, and / or the field effect transistor 110 are separately inserted and fixed or mounted on a printed circuit board (PCB) A single molding process is required first, and another molding process is further required for each mounted component after fixing or mounting on a printed circuit board, so that the manufacturing process may be complicated and the manufacturing cost may be increased.

Alternatively, a PTC structure 350 may be connected to one end of the battery protection circuit package 300b according to some embodiments of the present invention.

The PTC structure 350 includes a PTC device 310 and a metal layer 320 attached to a first surface of the PTC device 310. The PTC device 350 includes an upper surface and a lower surface of the PTC device 310, And a conductive connecting member 340 attached to a second surface that is a surface of the first conductive member 340. [ The metal layer 320 is bonded to one of the leads for the first internal connection terminal B + and the second internal connection terminal lead B-. The connection member 340 is electrically connected to the electrode terminal of the battery bare cell Can be bonded. For example, the metal layer 320, the connecting member 340, and / or the lead frame 50 may be made of nickel, copper, nickel plated copper or other metal. The metal layer 320 is electrically connected to one of the leads for the first internal connection terminal B + and the second internal connection terminal B- by laser welding, resistance welding, soldering, and a conductive adhesive For example, conductive epoxy), and conductive tape.

The PTC (Positive Temperature Coefficient) element 310 can be formed, for example, by dispersing conductive particles in a crystalline polymer. Therefore, the PTC element 310 becomes a passage through which the current flows between the metal layer 320 and the conductive connecting member 340 at a temperature lower than the set temperature. However, when the temperature exceeds the set temperature due to the occurrence of the overcurrent, the crystalline polymer swells and the resistance between the conductive particles dispersed in the crystalline polymer is separated and the resistance is rapidly increased. Accordingly, the flow of the current between the metal layer 320 and the conductive connecting member 340 is cut off or the flow of the current is reduced. Since the flow of the current can be cut off by the PTC device 310, the PTC device 310 serves as a safety device for preventing the battery from rupturing. When the temperature is lower than the set temperature again, the PTC element 310 shrinks the crystalline polymer and restores the connection between the conductive particles, so that the current flows smoothly.

The lead frame 50 constituting the battery protection circuit package 300b is electrically connected to the electrode terminal of the battery bare cell via the PTC structure. For example, the lead 50-6 for the second internal connection terminal of the terminal lead frame 50 may be electrically connected to the negative terminal 410 of the battery bare cell via the PTC structure 350. That is, the lead 50-6 for the second internal connection terminal of the lead frame 50 is connected to the metal layer 320 and is connected to the negative terminal of the battery bare cell via the conductive connecting member 340 via the PTC element 310. [ (Not shown). In this case, the metal layer 320 is defined within the upper surface on one side of the PTC device 310, and the connecting member 340 is extended from the other side of the PTC device 310 to the negative terminal 410 of the battery bare cell. Lt; / RTI > The connection member 340 may be formed by any one method selected from the group consisting of laser welding, resistance welding, soldering and conductive adhesive (for example, conductive epoxy) and conductive tape to the negative electrode terminal 410 of the battery bare cell. . ≪ / RTI >

The length of the lead frame 50 in the battery protection circuit package 300b having the structure as described above is set such that the lead frame 50 is positioned at the center of the upper surface of the battery bare cell 400 ) On the one side. Further, the battery protection circuit package 300b to which the PTC structure 350 is coupled can be configured to be disposed on one side with respect to the center of the upper surface of the battery bare cell 400 (e.g., the negative terminal 410) have. For example, the length of the battery protection circuit package 300b to which the PTC structure 350 is coupled may be approximately half of the total length L of the cap plate 430 (L / 2).

FIG. 8 is an exploded perspective view of a battery pack having a battery protection circuit package according to another embodiment of the present invention, and FIG. 9 is a perspective view of a battery protection circuit package according to another embodiment of the present invention. Particularly, FIG. 9A is a perspective view showing the structure 200c before the encapsulant 250 is formed, and FIG. 9B is a cross-sectional view of the battery protection circuit package 300c in which the encapsulant 250 is formed. FIG.

3) by introducing the antenna structure 140 including the NFC antenna in the battery protection circuit package 300c according to another embodiment of the present invention, the configuration of the terminal pads 60-1 and 60-2 It is possible to reduce the size of the package and to secure a space inside the package. Also, since the antenna soldering process can be omitted, the manufacturing process of the battery pack can be simplified. Furthermore, it is possible to improve the shear strength from the viewpoint of the overall structure by mounting and sealing the NFC antenna in a chip form inside the battery protection circuit package without disposing and bonding a film-shaped NFC antenna outside the battery protection circuit package.

8 and 9, in the battery protection circuit package 300c according to another embodiment of the present invention and the battery pack 600c having the same, unlike in FIGS. 5 to 7, the battery protection circuit package 300c, The lead frame 50 constituting the battery bare cell 400 is arranged on both sides with respect to the center without being disposed on one side with respect to the center of the upper surface of the battery bare cell 400 (for example, the negative terminal 410) . The antenna structure 140 is disposed on one side of the battery cell 400 on the negative terminal 410 and the battery protection circuit element is disposed on the other side of the battery cell 400, . 5, the antenna structure 140 and the battery protection circuit element may be disposed on one side of the battery cell 400 with the negative terminal 410 as a center. Further, the battery protection circuit package 300c to which the PTC structure 350 is coupled may be configured to be disposed on both sides with respect to the center of the upper surface of the battery bare cell 400 (e.g., the negative terminal 410) have. For example, the length of the battery protection circuit package 300c to which the PTC structure 350 is coupled may be greater than about half (L / 2) of the overall length L of the cap plate 430.

The battery protection circuit package 300c according to another embodiment of the present invention shown in FIGS. 8 and 9 and the battery pack 600c having the same will be described with reference to FIGS. 5 to 7 The battery protection circuit package 300b according to an embodiment of the present invention and the battery pack 600b having the same will be omitted here.

FIG. 10 is an exploded perspective view of a battery pack having a battery protection circuit package and an antenna package according to still another embodiment of the present invention, FIG. 11 is a perspective view of a battery protection circuit package according to another embodiment of the present invention, 12 is a perspective view of an antenna package according to another embodiment of the present invention, and FIG. 13 is an assembled perspective view of a battery pack having a battery protection circuit package and an antenna package according to another embodiment of the present invention.

10 to 13, a battery pack 600d according to another embodiment of the present invention includes a battery bare cell 400, a battery protection circuit package 300d, an antenna package 300e, and an upper case 500, Respectively.

The battery protection circuit package 300d is disposed on one side of the upper surface 430 with the negative terminal 410 of the battery bare cell 400 as a center. The battery protection circuit package 300d includes a protection IC 120 mounted on a substrate 50 and a substrate 50, a field effect transistor 110 and at least one passive element 130, The field effect transistor 110, and the at least one passive element 130. The sealing member 250 may be formed of a conductive material.

The antenna package 300e includes a lead frame 50; And an antenna structure 140 mounted on the lead frame 50 and including an NFC antenna. The NFC antenna constituting the antenna structure 140 may include an inductor capable of resonating in the NFC frequency band. The description of the antenna structure 140 is the same as that described with reference to Figs. 5 to 7, and therefore will not be described here.

The antenna package 300e is disposed on the other side opposite to the side where the battery protection circuit package 300d is disposed with the negative terminal 410 of the battery bare cell 400 as the center. The lead frame 50 constituting the antenna package 300e is bonded to the battery bare cell 400 so that the antenna package 300e can be fixed on the battery bare cell 400. [ A part of one of the plurality of leads 50-8 constituting the lead frame 50 constituting the antenna package 300e can constitute an NFC external connection terminal.

The upper case 500 is fixed on the upper surface 430 of the battery bare cell 400 with the battery protection circuit package 300d and the antenna package 300e interposed therebetween, And the NFC external connection terminals 50-8 of the antenna package 300e are exposed through the through holes 550-2, 50-3, and 50-4.

The battery protection circuit package 300d and the antenna package 300e may be disposed apart from each other around the anode terminal 410 of the battery bare cell 400. [ The electrical connection between the battery protection circuit package 300d and the antenna package 300e can be realized by providing additional wiring (not shown). At least a part of the battery protection circuit package 300d and at least a part of the antenna package 300e may be fixed to the upper surface 430 of the battery bare cell 400 having substantially the same level.

The battery protection circuit package 300d in the battery pack 600d according to another embodiment of the present invention is disposed on one side of the negative terminal 410 of the battery bare cell 400, . In this embodiment, the antenna package 300e including the NFC antenna is disposed on the other side of the negative electrode terminal 410 of the battery bare cell 400, so that a compact battery pack 600d can be realized by utilizing the space efficiently have.

3) of the antenna soldering process by introducing the antenna package 300e sealing the antenna structure 140 including the NFC antenna separately from the battery protection circuit package 300b. 2 is unnecessary, the battery protection circuit package 300b can be downsized and the battery protection circuit package 300b and the internal space can be advantageously secured. Also, since the antenna soldering process can be omitted, the manufacturing process of the battery pack can be simplified. Furthermore, by mounting and sealing the NFC antenna in a chip form inside the antenna package 300e separately from the battery protection circuit package without disposing and bonding a film-like NFC antenna outside the battery protection circuit package, The shear strength can be improved.

Meanwhile, in implementing a battery pack according to some embodiments of the present invention, an insert injection method may be applied, and this will be described.

Referring to FIG. 5, the battery pack 600b according to some embodiments of the present invention further includes a holder 480 interposed between the upper surface of the battery bare cell 400 and the battery protection circuit package 300b. The holder 480 may be formed by disposing at least a part of the battery protection circuit package 300b inside the first injection mold and injecting the resin melt and insert injection molding to join the battery protection circuit package 300b.

5, the upper case 500 includes at least a portion of the battery bare cell 400 and at least a portion of the battery protection circuit package 300b disposed on the upper surface of the battery bare cell 400, And then injecting the resin melt and performing an injection injection molding so as to be bonded to at least one selected from the battery bare cell 400 and the battery protection circuit package 300b.

The insert injection method may be applied to the battery pack 600c according to some embodiments of the present invention shown in FIG. 8 in the same manner as described with reference to FIG.

10, a battery pack 600d according to some embodiments of the present invention includes a holder 480 interposed between an upper surface of a battery bare cell 400 and a battery protection circuit package 300d and an antenna package 300e. ). The holder 480 may be formed by bonding at least a part of the antenna package 300e to the inside of the third injection mold, bonding the resin melt to the antenna package 300e by insert injection molding. The bonding strength of the antenna package 300e may be low because the area where the antenna package 300e is joined to the battery bare cell 400 is relatively small and the bonding strength of the antenna package 300e in the battery pack 600d is reduced by such injection molding, It is possible to secure the bonding strength of the resin.

10, at least a portion of the battery bare cell 400 and at least a portion of the battery protection circuit package 300d and the antenna package 300e disposed on the upper surface of the battery bare cell 400, And the upper case 500 is realized by injection molding a resin melt and insert injection molding. The upper case 500 may be formed by bonding to the battery bare cell 400, the battery protection circuit package 300d and the antenna package 300e.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

10: Battery protection circuit
50: Lead frame
110: Dual FET Chip
120: Protection IC
141: NFC circuit
300a, 300b, 300c, 300d: battery protection circuit package
300e: antenna package
350: PTC structure
400: battery bare cell
410: negative terminal
430: cap plate
500: upper case
600a, 600b, 600c, 600d: Battery pack
NFC1: NFC external connection terminal
PD1, PD2: NFC connection terminal

Claims (24)

delete delete delete delete delete delete delete delete delete delete delete Battery bare cell;
A substrate electrically connected to an electrode terminal of the battery bare cell; At least one antenna structure mounted on the substrate, the antenna structure comprising an NFC antenna; And a battery protection circuit element mounted on the substrate, the battery protection circuit element comprising a protection IC, a field effect transistor (FET) and at least one passive element. And
And a through hole formed on the upper surface of the battery bare cell through the battery protection circuit package including the NFC antenna and having a through hole formed to expose external connection terminals of the battery protection circuit package including the NFC antenna, case;
And,
Wherein the battery protection circuit package is disposed on both sides of the negative electrode terminal of the battery bare cell,
Wherein the antenna structure is disposed on one side of the negative terminal of the battery bare cell and the battery protection circuit element is disposed on the other side of the negative terminal of the battery bare cell,
Battery pack. Battery bare cell;
A substrate electrically connected to an electrode terminal of the battery bare cell; At least one antenna structure mounted on the substrate, the antenna structure comprising an NFC antenna; And a battery protection circuit element mounted on the substrate, the battery protection circuit element comprising a protection IC, a field effect transistor (FET) and at least one passive element. And
And a through hole formed on the upper surface of the battery bare cell through the battery protection circuit package including the NFC antenna and having a through hole formed to expose external connection terminals of the battery protection circuit package including the NFC antenna, case;
And,
Wherein the battery protection circuit package is disposed on only one side of the battery terminal,
Wherein the antenna structure and the battery protection circuit element are disposed on one side of the battery cell,
Battery pack. The method according to claim 12 or 13,
And a holder interposed between an upper surface of the battery bare cell and the battery protection circuit package,
Wherein the holder comprises at least a portion of the battery protection circuit package disposed inside the injection mold, and a resin melt injection molded and insert injection-
Battery pack. The method according to claim 12 or 13,
The upper case includes:
The battery bare cell and at least a part of the battery protection circuit package disposed on the upper surface of the battery bare cell are disposed in the injection mold and the resin melt is injected and insert injection molded, And a package,
Battery pack. Battery bare cell;
A battery protection circuit package disposed on one side of the upper surface of the battery bare cell and incorporating a protection IC, a field effect transistor (FET), and at least one passive element disposed on the first substrate;
An antenna package having at least one antenna structure disposed on the other side of the upper surface of the battery bare cell and including an NFC antenna disposed on the second substrate; And
And a through hole formed on the upper surface of the battery bare cell and interposed between the battery protection circuit package and the antenna package so as to expose at least one external connection terminal of the battery protection circuit package and the antenna package, An upper case;
And a battery pack. 17. The method of claim 16,
Wherein the battery protection circuit package and the antenna package are spaced apart from each other with respect to a negative terminal of the battery bare cell,
Wherein at least a portion of the battery protection circuit package and at least a portion of the antenna package are bonded and secured to an upper surface of the battery bare cell,
Battery pack. 17. The method of claim 16,
Wherein the antenna structure has a chip shape. 17. The method of claim 16,
Wherein the antenna structure comprises an inductor capable of resonating in an NFC frequency band. 20. The method of claim 19,
The antenna structure comprising a coil having a first winding direction,
Wherein the direction of the magnetic field induced in the inductor is perpendicular to the wide surface of the battery bare cell,
Battery pack. 20. The method of claim 19,
Wherein the at least one antenna structure comprises a plurality of antenna structures spaced from one another,
Each of the plurality of antenna structures including a coil having the same winding direction,
Wherein a direction of a magnetic field induced by the inductor is perpendicular to a wide surface of a side surface of the battery bare cell when the side surface of the battery bare cell is composed of a wide surface and a narrow surface,
Battery pack. 17. The method of claim 16,
Wherein the at least one antenna structure comprises a plurality of antenna structures spaced from one another,
Wherein the antenna structure of some of the plurality of antenna structures includes a coil having a first winding direction,
Wherein the remaining antenna structure of the plurality of antenna structures includes a coil having a second winding direction perpendicular to the first winding direction,
Wherein the direction of the magnetic field induced in the coil having the first winding direction is perpendicular to the wide surface of the side surface of the battery bare cell when the side surface of the battery bare cell is composed of a wide surface and a narrow surface, Wherein a direction of a magnetic field induced in the coil having a vertical axis is perpendicular to a narrow plane of the side of the battery bare cell,
Battery pack. 17. The method of claim 16,
And a holder interposed between an upper surface of the battery bare cell and the battery protection circuit package and the antenna package,
Wherein the holder is formed by arranging at least a part of the antenna package inside an injection mold, injecting a resin melt, and insert-
Battery pack. 17. The method of claim 16,
The upper case includes:
At least a part of the battery protection circuit package disposed on the battery bare cell and the battery bare cell and at least a part of the antenna package are disposed inside the injection mold and the resin melt is injected and insert injection molded, A bare cell, the battery protection circuit package, and the antenna package.

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