KR20220136789A - Plate-type terminal of a super capacitor module with a function of reducing the step difference between battery cells and a super capacitor module including the same - Google Patents

Abstract

The present invention relates to a plate-type terminal of a supercapacitor module with a function of reducing a step difference between battery cells and a supercapacitor module including the same. The plate-type terminal attached to one surface of a battery cell constituting a supercapacitor module to be used comprises: a terminal unit which is attached to one surface of a battery cell to be connected to a terminal of the battery cell, to transmit current of the battery cell; a thermal conduction unit which is provided on one side of the terminal unit, to conduct heat; and a step difference reduction unit which is provided on the other side of the terminal unit, to reduce a step difference between battery cells formed by the attachment of the terminal unit.

Description

Plate-type terminal of a super capacitor module with a function of reducing the step difference between battery cells and a super capacitor module including the same}

The present invention relates to a plate-type terminal of a super capacitor module and a super capacitor module including the same, and more particularly, to a plate-type terminal of a super capacitor module having a function of reducing the step difference between battery cells and a super capacitor module including the same.

Batteries are used as power sources for various electronic devices. Batteries used for electric vehicles or other purposes are composed of a battery pack in which tens or hundreds of battery cells are aggregated depending on the required capacity.

In order to increase the use efficiency of the battery, it is necessary to maintain the same voltage level of the battery cells. To this end, a battery management system (BMS) is provided to charge or discharge each battery cell of the battery pack. Keep the voltage at an appropriate level.

Recently, a rechargeable battery capable of charging and discharging has been widely used as an energy source for a wireless mobile device. In addition, the secondary battery is an electric vehicle (EV), a hybrid electric vehicle (HEV), a plug-in hybrid electric vehicle, which is being proposed as a method to solve air pollution such as conventional gasoline and diesel vehicles using fossil fuels. It is also attracting attention as a power source for (Plug-In HEV) and FCEV.

While one or two or three battery cells are used per device in small mobile devices, a supercapacitor module electrically connecting a plurality of battery cells is used in mid-to-large devices such as automobiles due to the need for high output and large capacity.

Since the super capacitor module is preferably manufactured as small as possible in size and weight, prismatic batteries and pouch-type batteries that can be stacked with high integration and have a small weight to capacity are mainly used as battery cells (unit cells) of the super capacitor module. have. In particular, a pouch-type battery using an aluminum laminate sheet or the like as an exterior member has recently attracted a lot of attention due to advantages such as a small weight, low manufacturing cost, and easy shape deformation.

Since the battery cells constituting the super capacitor module are composed of rechargeable batteries capable of charging and discharging, such a high-output, large-capacity secondary battery generates a large amount of heat during charging and discharging. In particular, since the laminate sheet of the pouch-type battery widely used in the battery module is coated with a polymer material having low thermal conductivity, it is difficult to effectively cool the temperature of the entire battery cell.

If the heat of the battery module generated during the charging/discharging process is not effectively removed, heat accumulation occurs and consequently accelerates the deterioration of the battery module, and in some cases may cause ignition or explosion. Therefore, a high-output, large-capacity battery pack requires a cooling system for cooling the battery cells in which it is built.

Meanwhile, in order to cool the battery cells, a plate-type terminal has been proposed that serves as a terminal and simultaneously acts as a heat sink. However, when the plate-type terminal is attached to the battery cell, due to the thickness of the plate-type terminal, A step occurred in the part where the type terminal was not provided, and this step acted as a factor inducing movement between battery cells.

For this reason, the battery cells arranged in a line may be disturbed by vibration or a specific external force, and there is a possibility that power supply between the battery cells is not smooth.

The present invention is proposed to solve the above problems, and the present invention is a plate-type terminal having a cooling function by acting as a heat sink while being attached to one surface of a battery cell so as to be connected to the terminal of the battery cell and transmitting current, An object of the present invention is to provide a plate-type terminal of a super capacitor module having a step reduction function between battery cells and a step reduction function between battery cells to prevent disorder between arranged battery cells, and a super capacitor module including the same.

A plate-type terminal of a super capacitor module having a step difference reduction function between battery cells according to an embodiment of the present invention for solving the above problems is a plate-type terminal used by being attached to one surface of a battery cell constituting the super capacitor module, a terminal part attached to one surface of the battery cell so as to be connected to the terminal of the battery cell and transmitting the current of the battery cell; It may be configured to include a heat conduction unit provided at one side of the terminal unit to conduct heat, and a step difference reducing unit provided at the other side of the terminal unit to reduce a step difference between battery cells formed due to attachment of the terminal unit.

Here, the step difference reducing part is provided with a material having elasticity and electrical insulation, and may be connected to the terminal part by a connection medium having heat resistance and electrical insulation.

In addition, the connecting medium having heat resistance and electrical insulation may be made of a synthetic resin in which silicone is added to a base made of a thermoplastic resin or aramid fiber.

In addition, the connection medium may be injection-molded to be integrated with the terminal part and the step reduction part.

In addition, the plate-type terminal may be injection-molded to form a binding portion in which a plurality of embossed combinations are formed between the terminal portion and the connection medium or between the connection medium and the step difference reducing portion.

On the other hand, the supercapacitor module according to an embodiment of the present invention, a frame having a predetermined length and provided with electrode leads at one or more of both ends of the length; a plurality of battery cells arranged and installed in a line along the frame; a plate-type terminal respectively attached to one surface of the plurality of battery cells to transmit current between the plurality of battery cells or between the battery cells and the frame electrode leads; and an elastic member interposed between each end of the frame and the outermost battery cells in the array and a control board for controlling the battery cells, wherein the plate-shaped terminal is attached to one surface of the battery cells to be connected to the terminals of the battery cells a terminal unit for transmitting the current of the battery cell; It may be configured to include a heat conduction unit provided at one side of the terminal unit to conduct heat, and a step difference reducing unit provided at the other side of the terminal unit to reduce a step difference between battery cells formed due to attachment of the terminal unit.

A plate-type terminal of a supercapacitor module having a step difference reduction function between battery cells according to an embodiment of the present invention and a supercapacitor module including the same constitute a plate-type terminal of a supercapacitor module capable of implementing a current transfer and cooling function. Therefore, it is possible to prevent disorder between the battery cells arranged together with a function of reducing the step difference between the battery cells.

For this reason, it is possible to prevent the battery cells from being disturbed by vibration or a specific external force, and it is possible to increase the battery efficiency by smoothly supplying power between the battery cells.

In addition, the above-mentioned effects according to the embodiments of the present invention are not limited to the described content, and may further include all effects predictable from the specification and drawings.

1 is a perspective view of a super capacitor module including a plate-type terminal of a super capacitor module having a step difference reduction function between battery cells according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view illustrating a partial configuration of the super capacitor module of FIG. 1 .
3 is a view showing a plate-type terminal of the super capacitor module having a function of reducing the step difference between the battery cells of FIG. 1 .
4 (a) and (b) are views showing a state in which heat is transferred by a heat change means according to an embodiment of the present invention.
5 is a schematic view showing an insulating layer formed on a heat conduction portion when the plate-type terminal according to an embodiment of the present invention is viewed in a planar direction.
(a) of FIG. 6 is an exemplary view showing a state inducing movement between battery cells in a state in which a step reduction unit is not provided, and (b) is a state in which a step reduction unit according to an embodiment of the present invention is prevented from moving between battery cells. It is an example diagram showing the state of being.
7 is an exemplary view showing a state in which the step difference reducing part of FIG. 6 is connected with a connection medium.
8 is an exemplary view showing a form of binding between a step reduction unit and a connection medium or a connection medium and a terminal unit by a binding unit according to an embodiment of the present invention.

Hereinafter, the description of the present invention with reference to the drawings is not limited to specific embodiments, and various modifications may be made and various embodiments may be provided. In addition, it should be understood that the content described below includes all transformations, equivalents, and substitutes included in the spirit and scope of the present invention.

In the following description, terms such as 1st, 2nd, etc. are terms used to describe various components, meanings are not limited thereto, and are used only for the purpose of distinguishing one component from other components.

Like reference numbers used throughout this specification refer to like elements.

As used herein, the singular expression includes the plural expression unless the context clearly dictates otherwise. In addition, terms such as "comprises", "comprises" or "have" described below are intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist. It should be construed as not precluding the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

Hereinafter, a plate-type terminal of a super capacitor module having a function of reducing a step difference between battery cells according to an embodiment of the present invention and a super capacitor module including the same will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a super capacitor module including a plate-type terminal of a super capacitor module having a step reduction function between battery cells according to an embodiment of the present invention, and FIG. 2 is an exploded partial configuration of the super capacitor module of FIG. It is an exploded perspective view.

1 and 2 , the super capacitor module 1 having a step reduction function between battery cells of the present invention includes a frame 10 , a battery cell 20 , a plate-type terminal 30 , and an elastic member 40 . ) and a control board 50 may be included.

Specifically, the frame 10 may be configured to have a predetermined length, and may be formed as a single frame or may be formed by combining a plurality of frames. Preferably, a frame for repair may be combined to facilitate mounting of the battery cell 20, and a plurality of frames may include a front frame 11, a rear frame 12, and a bottom frame 13 as shown in the drawings. , may be configured to include a top frame (14).

Here, the bottom frame 13 and the upper frame 14 may be assembled to the front frame 11 and the rear frame 12, respectively, or may be integrally formed.

However, the shape of the plurality of frames described above is merely an example, and is not limited thereto, and the configuration of the frame 10 may be variously formed.

An electrode lead 11a may be provided at one or more ends of both ends of the frame 10 . That is, when the front frame 11 and the rear frame 12 constitute both ends of the frame 10 , the electrode lead 11a may be provided on at least one of the front frame 11 and the rear frame 12 . .

The electrode lead 11a may be connected to the battery cell 20 located at the outermost side when the battery cells 20 are arranged in a line, thereby receiving a current from the battery cell 20 to the electrode lead 11a. It can be transmitted to the connecting device.

Here, the electrode lead 11a may be directly connected to the battery cell 20 , but preferably may be connected via the plate-shaped terminal 30 . The present invention is characterized in that it includes the plate-type terminal 30, and a more detailed description of the plate-type terminal 30 will be described later.

A plurality of battery cells 20 may be arranged and installed in a line along the frame 10 . Here, the battery cell 20 is formed to have a terminal (not shown) for supply of current. The location of the terminal of the battery cell is not limited, but may preferably be an inner surface terminal embedded in the battery cell 20 .

Since the battery cell 20 has an inner surface terminal, exposure of the terminals can be minimized, and a plate-type terminal 30 to be described later can be attached to one surface.

Meanwhile, the battery cells 20 to which the plate-shaped terminals 30 are attached may be arranged so that the plate-shaped terminals 30 do not face each other when arranged in a line. That is, the battery cells 20 may be arranged such that only one plate-shaped terminal 30 is positioned between the adjacent battery cells 20 .

The plate-type terminal 30 is a material having some thermal conductivity and electrical conductivity, and a portion having elasticity and electrical insulation, and is attached to one surface of each battery cell 20 through a portion having thermal conductivity and electrical conductivity to be attached to the battery cell 20 ) may be connected to a terminal (not shown). This means that the plate-shaped terminal 30 can receive current from the battery cell 20 .

A more detailed description of the plate-type terminal 30 will be described later with reference to FIGS. 3 to 8 .

Here, as a material having thermal conductivity and electrical conductivity, it may be aluminum or an aluminum alloy material, but is not necessarily limited thereto, and other metals such as titanium or carbon composite materials, etc. It may be possible.

In addition, as a material having elasticity and electrical insulation, it may be rubber or silicone, but is not necessarily limited thereto, and a material having elasticity and electrical insulation may be used in various ways.

The plate-type terminal 30 may receive current from the attached battery cell 20 and transmit the current to other battery cells 20 , and may be the plate-type terminal 30 of the battery cell 20 disposed at the outermost side. In this case, the current may be supplied from the attached battery cell 20 to transmit the current to the electrode lead 11a of the frame 10 .

On the other hand, the plate-type terminal 30 may be configured to easily radiate or absorb heat in addition to supplying current as described above, and transmits a control signal from the control board 50 to the battery cell 20 to the battery cell 20 . ) may be configured to monitor the battery cell 20 by transmitting the state signal of the battery cell 20 to the control board 50 while controlling.

Detailed descriptions thereof will be described with reference to FIGS. 3 to 8 , while describing each configuration of the plate-type terminal 30 .

The elastic member 40 may be interposed between each end of the frame 10 and the outermost battery cell 20 in the arrangement of the battery cells 20 . At this time, the elastic member 40 supports the frame 10 and compresses the battery cells 20 in the compression direction to increase the adhesion between the battery cells 20 and to buffer the space between the battery cells 20 and the frame 10 . can The elastic member 40 may have various shapes such as a leaf spring, a coil spring, and the like.

The control board 50 may be connected to the battery cell 20 to control the battery cell 20 . In addition, the control board 50 may receive a state signal from the connected battery cell 20 to detect the state of the battery cell 20 , and through this, the battery cell 20 may be monitored.

Here, the status signal of the battery cell 20 may be a status signal regarding whether the battery cell 20 is operating or the remaining battery level of the battery cell 20 , and the control board 50 is connected to the plate-type terminal 30 through the It is connected to the furnace control board 50 to control the battery cell 20 or to receive a status signal from the battery cell 20 to perform monitoring.

When the control board 50 detects an abnormality when detecting the state of the battery cell 20, it emits a light with an LED, emits a sound through a speaker, or transmits a text message to a connected user terminal. so that the monitoring of the battery cell 20 may be performed.

3 is a view showing a plate-type terminal of a super capacitor module having a step reduction function between the battery cells of FIG. 1, and FIGS. It is a view showing a state in which this is transmitted, and FIG. 5 is a schematic view showing an insulating layer formed on a heat conduction part when looking at the plate-type terminal according to an embodiment of the present invention in a planar direction.

In addition, (a) of FIG. 6 is an exemplary view showing a movement induced state between battery cells in a state in which a step reduction unit is not provided, and (b) is a movement between battery cells in a state in which a step reduction unit is provided according to an embodiment of the present invention. It is an exemplary view showing a state in which this is prevented, and FIG. 7 is an exemplary view showing a state in which the step reduction part of FIG. 6 is connected to a connection medium, and FIG. 8 is a step reduction part and a connection medium or a connection medium according to an embodiment of the present invention. It is an exemplary diagram showing the form of binding between the and the terminal part by the binding part.

3 to 8 , the plate-type terminal 30 may include a terminal part 31 , a heat conduction part 32 , and a step difference reducing part 33 .

Specifically, the terminal part 31 may be attached to one surface of the battery cell 20 so as to be connected to the provided terminal of the battery cell 20 in the form of a flat plate. In this case, the terminal part 31 is made of aluminum or an aluminum alloy material having thermal conductivity and electrical conductivity, etc., and receives the current from the battery cell 20 and transmits it to the other battery cell 20 or the electrode lead 11a. Can be configured. .

The heat conduction part 32 may be provided on one side of the terminal part 31 , and may preferably be provided in the form of a flat plate on an extension line of the terminal part 31 . At this time, the heat conduction part 32 is made of aluminum or an aluminum alloy material having thermal conductivity and electrical conductivity, such as the terminal part 31, to conduct heat between the space or the device where the terminal part 31 and the heat conduction part 32 face each other. can be configured.

For example, when the heat conduction unit 32 faces the air layer, the terminal unit 31 may be configured to discharge heat generated in the process of transmitting current to the air layer, or a temperature higher than the temperature generated by the terminal unit 31 . When facing a device that emits heat from the device, it may be configured to conduct heat generated by the device to the terminal unit 31 .

Using this, the heat change means 60 may be provided at an adjacent position of the heat conduction unit 32 .

The heat change means 60 is a heating element provided to form a higher temperature than the terminal part 31 or a cooling body provided to form a temperature lower than that of the terminal part 31. It may be formed to supply heat to the terminal unit 31 , and when provided as a cooling body, may be formed to receive heat from the terminal unit 31 via the heat conduction unit 32 .

That is, the heat conduction part 32 emits heat from the terminal part 31 as shown in (a) of FIG. 4 according to the thermal change of the heat change means 60 installed at an adjacent position, or (b) of FIG. ) may be configured to supply heat to the terminal part 31 as shown, and the heat change means 60 to make the heat conduction part 32 operate is air-cooled, water-cooled, or refrigerant-type cooling pipe or heat It may be provided by various means such as a sink, a heater, a heat transfer element, etc. that can give a heat change.

The heat change means 60 as described above is merely an example and is not necessarily provided, and when the heat change means 60 is not provided, the heat conduction part 32 is configured to face the air layer as described above, and the terminal part 31 ) can be configured to dissipate heat to the air layer.

Meanwhile, as shown in FIG. 5 , the heat conduction part 32 may be surface-treated to form an insulating layer 32a on the surface together with the bent part 32b to be described later. The surface-treated heat conduction unit 32 to form the insulating layer 32a on the surface thereof can prevent in advance the occurrence of short circuits due to moisture, such as condensation, which may occur during cooling.

Here, when the material having thermal conductivity and electrical conductivity is aluminum or an aluminum alloy material, the heat conduction unit 32 may be surface-treated by a hard anodizing process. An aluminum oxide (Al2O3) film layer is formed on the surface of the heat-conducting part surface-treated by the hard anodizing process, and this aluminum oxide film layer may serve as the insulating layer 32a.

More specifically, when the dilution-acid liquid is electrolyzed through the anode to the heat conduction unit 32 made of aluminum or aluminum alloy material, it strongly adheres to the surface of the heat conduction unit 32 by oxygen generated from the anode. An aluminum oxide film layer is formed. This aluminum oxide film layer has characteristics such as corrosion resistance, abrasion resistance, and electrical insulation, and can serve as the insulating layer 32a for preventing short circuit.

In addition, when the hard anodizing process is performed on the surface of aluminum or aluminum alloy, the hardness of the heat conductive part 32 may be strengthened and may have very strong properties against moisture including salt water.

In addition, the heat conduction part 32 may include a bent part 32b bent to one side of the battery cell 20 . The bent portion 32b is positioned at the extreme end of the plane from the terminal portion 31 to the heat conduction portion 32 and is formed to be bent to one side of the battery cell 20 to widen the heat transfer area of the heat conduction portion 32 and to increase the heat transfer area of the plate. The type terminals 30 may be uniformly aligned on the battery cells 20 .

The step difference reducing part 33 may be provided on the other side of the terminal part 31 to reduce the step difference between the battery cells 20 generated due to the attachment of the terminal part 31 to the battery cell 20 .

More specifically, when the terminal part 31 is a plate having a thickness and is attached to the battery cell 20 , a portion of the battery cell 20 to which the terminal part 31 is not attached may have a step as large as the thickness of the terminal part 31 . Inevitably, such a stepped space may act as a space that can induce movement between the battery cells 20 when the battery cells 20 are loaded in a line.

For this reason, as shown in (a) of FIG. 6 , the battery cells 20 arranged in a line may be disturbed by vibration or a specific external force, and power supply between the battery cells 20 may not be smooth. The invention can solve the above-mentioned problems by providing the step difference reducing part 33 on the other side of the terminal part 31 where the terminal part 31 and the heat conducting part 32 are not provided as shown in (b) of FIG. 6 . .

It is preferable that the step reduction part 33 has the same or similar thickness as the terminal part 31 in order to minimize the step difference between the battery cells 20, and to alleviate the impact between the battery cells 20 and prevent a short circuit. It is preferable to be prepared with a material having elasticity and electrical insulation for the purpose.

Here, as a material having elasticity and electrical insulation, it may be a material such as rubber or silicone, but is not necessarily limited thereto, and various materials having elasticity and electrical insulation may be used.

At this time, the step reduction part 33 may be manufactured separately from the terminal part 31 and may be formed on the other side of the terminal part 31 by being coupled or fused to the terminal part 31 , but more preferably, as shown in FIG. 7 , heat resistance and It may be connected to the terminal part 31 by a connection medium 33a having electrical insulation.

The connection medium 33a having heat resistance and electrical insulation can prevent the step reduction portion 33 from melting because heat is directly applied to the step reduction portion 33 when heat is generated due to electrical conduction of the terminal portion 31, Fire can be prevented.

The connecting medium 33a may be made of a synthetic resin in which silicone is added to a base made of a thermoplastic resin such as Teflon or PEEK resin or aramid fiber. Thermoplastic resins such as Teflon and PEEK resins have heat resistance that can withstand a temperature of about 200° C. to 300° C., aramid fibers have heat resistance that can withstand even 400° C., and silicone can act to increase electrical insulation.

However, this is not necessarily limited as a preferred example, and the material having heat resistance and electrical insulation may be variously configured in addition to the above configuration.

Meanwhile, the connection medium 33a may be injection molded to be integrated with the terminal part 31 and the step reduction part 33 . At this time, when the terminal part 31 is formed in the injection furnace, the molten material of the step reduction part 33 and the terminal part 31 may also be put in and integrated, or the terminal part 31 and the step reduction part 33 may be injected first. Afterwards, it may be possible to perform double injection for performing injection of the connection medium 33a between the terminal part 31 and the step difference reducing part 33 .

That is, the injection method for integrating the connection medium 33a with the terminal part 31 and the step difference reducing part 33 is not limited.

At this time, between the terminal part 31 and the connection medium 33a or between the connection medium 33a and the step difference reducing part 33, as shown in FIG. It can be injection molded.

For example, the binding portion 33b may be provided in the form of a 'T'-shaped protrusion in which horizontal embossing and vertical embossing are in harmony, or an 'F'-shaped protrusion in which one horizontal embossing and two vertical embossing are in harmony. can In addition, although not described, the binding portion 33b may be formed by a combination of various embossing.

This binding part 33b is provided between the terminal part 31 and the connection medium 33a or between the connection medium 33a and the step difference reducing part 33 at the time of injection, so that between the terminal part 31 and the connection medium 33a It may be formed to increase the binding force and the binding force between the connecting medium 33a and the step difference reducing part 33 .

In addition, the plate-type terminal 30 may further include a connection part 34 . The connection part 34 is configured to connect between the control board 50 for controlling the battery cell 20 and the terminal part 31 , and is configured to protrude from the plate-type terminal 30 in the installation direction of the control board 50 . can

At this time, the connection part 34 is shown to protrude from the heat conduction part 32 in the drawing, but this is to avoid the upper frame 10 and be connected to the control board 50, and the protruding position according to the control board 50 is It may vary, so the protrusion position is not limited.

The control board 50 may be configured to control the battery cell 20 by connecting to the battery cell 20 via the connection part 34 or to monitor the state of the battery cell 20 .

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those of ordinary skill in the art to which the present invention pertains can implement the present invention in other specific forms without changing the technical spirit or essential features of the present invention. you will be able to understand Accordingly, the embodiments described above are illustrative in all respects and not restrictive.

1: Super capacitor module
10 : frame
11: front frame
11a: electrode lead
12 : rear frame
13 : floor frame
14: upper frame
20: battery cell
30: plate-type terminal
31: terminal part
32: heat conduction unit
32a: insulating layer
32b: bend
33: step reduction part
33a: connection medium
33b: binding part
34: connection part
40: elastic member
50: control panel
60: heat change means

Claims (6)

A plate-type terminal attached to one side of a battery cell constituting a super capacitor module and used,
a terminal part attached to one surface of the battery cell so as to be connected to the terminal of the battery cell and transmitting the current of the battery cell;
a heat conduction unit provided on one side of the terminal unit to conduct heat; and
A plate-type terminal of a supercapacitor module having a step difference reduction function between battery cells, which is provided on the other side of the terminal part and includes a step reduction part for reducing a step difference between battery cells formed due to the attachment of the terminal part.
The method of claim 1,
The step difference reducing unit,
Provided with a material having elasticity and electrical insulation,
A plate-type terminal of a super capacitor module having a function of reducing the step difference between battery cells, characterized in that it is connected to the terminal part by a connection medium having heat resistance and electrical insulation.
3. The method of claim 2,
The connection medium having the heat resistance and electrical insulation,
A plate-type terminal of a supercapacitor module with a function of reducing the step difference between battery cells, characterized in that it is made of a synthetic resin with silicon added to a base made of thermoplastic resin or aramid fiber.
3. The method of claim 2,
The connecting medium is
A plate-type terminal of a super capacitor module having a step reduction function between battery cells, characterized in that it is injection-molded to be integrated with the terminal portion and the step reduction portion.
5. The method of claim 4,
A plate-type terminal of a super capacitor module having a step difference reduction function between battery cells, characterized in that it is injection-molded to form a binding portion forming a combination of a plurality of embossing between the terminal portion and the connection medium or between the connection medium and the step reduction portion.
a frame having a predetermined length and provided with electrode leads at one or more ends of both ends of the length;
a plurality of battery cells arranged and installed in a line along the frame;
a plate-type terminal respectively attached to one surface of the plurality of battery cells to transmit current between the plurality of battery cells or between the battery cells and the frame electrode leads;
an elastic member interposed between each end of the frame and the outermost battery cell in the array; and
It includes a control board for controlling the battery cell,
The plate-type terminal,
a terminal part attached to one surface of the battery cell so as to be connected to the terminal of the battery cell and transmitting the current of the battery cell;
a heat conduction unit provided on one side of the terminal unit to conduct heat; and
and a step reduction portion provided on the other side of the terminal portion to reduce a step difference between battery cells formed due to attachment of the terminal portion.

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