KR102480948B1 - Plate-type terminal of a super capacitor module and a super capacitor module including the same - Google Patents

Abstract

The present invention relates to a plate-type terminal of a supercapacitor module and a supercapacitor module including the same. The plate-type terminal of a supercapacitor module according to an embodiment of the present invention is attached to one surface of a battery cell constituting the supercapacitor module, A plate-type terminal made of a material having thermal conductivity and electrical conductivity, and a terminal unit attached to one surface of the battery cell to be connected to the terminal of the battery cell to transmit current of the battery cell; It may include a heat conduction part provided on one side of the terminal part to conduct heat and a connection part connecting between a control board for controlling the battery cell and the terminal part.

Description

Plate-type terminal of a super capacitor module and a super capacitor module including the same}

The present invention relates to a plate-type terminal of a supercapacitor module and a supercapacitor module including the same, and in particular, a battery cell of the supercapacitor module to simultaneously perform a terminal function, a cooling function, and a control function in an integrated form without the need for a separate wire. It relates to a plate-type terminal of a supercapacitor module mediating between them and a supercapacitor 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 battery packs in which dozens or hundreds of unit 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, and for this, a battery management system (BMS) is provided to charge or discharge each battery cell of the battery pack and Keep the voltage at an appropriate level.

Recently, secondary batteries capable of charging and discharging have been widely used as energy sources for wireless mobile devices. In addition, secondary batteries are electric vehicles (EVs), hybrid electric vehicles (HEVs), and plug-in hybrid electric vehicles that are proposed as a solution to air pollution caused by conventional gasoline vehicles and diesel vehicles using fossil fuels. (Plug-In HEV) and fuel cell electric vehicles (FCEV) are also attracting attention as a power source.

While one or two to three or four battery cells are used per device in small mobile devices, a supercapacitor module electrically connecting multiple battery cells is used in medium to large devices such as automobiles due to the need for high power and large capacity.

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

Since the battery cells constituting such a supercapacitor module are composed of secondary batteries capable of charging and discharging, such high-output and large-capacity secondary batteries generate a large amount of heat during charging and discharging processes. In particular, since the surface of 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 deterioration of the battery module, which may cause ignition or explosion in some cases. Therefore, a high-output and large-capacity battery pack requires a cooling system for cooling the battery cells in which it is built.

On the other hand, the conventional supercapacitor module is configured to transmit current through a bus bar, and is configured to enable cell control and monitoring by connecting terminals or electrodes of a battery with wires, and a cooling device for cooling battery cells is separately provided .

However, each component of these conventional supercapacitor modules was prepared separately and the manufacturing process was performed in multiple steps, which served as a cause of requiring a lot of process cost and process time.

In particular, since the wire is connected to control and monitor the battery cell, the surface area of the wire is small, so it is easily broken by high heat, or when the supercapacitor module is applied to a vehicle such as a vehicle, vibration generated during operation causes the wire to break. There was a possibility of damage or disconnection of the connection part, and due to this, there was a disadvantage that control or monitoring was not smooth because sufficient current could not be delivered.

The present invention is proposed to solve the above problems, and the present invention is formed in one body to simultaneously perform the terminal function of the bus bar, the cooling function of the battery cells, and the battery cell control function of the control board, A plate-type terminal of a supercapacitor module that is configured to mediate between battery cells so that wires are unnecessary in performing cell control and monitoring, and is further manufactured to reduce manufacturing processes, thereby reducing process cost and process time, and including the same It is an object of the present invention to provide a supercapacitor module.

The plate-type terminal of the supercapacitor module according to an embodiment of the present invention for solving the above problems is used by being attached to one surface of a battery cell constituting the supercapacitor module, and is made of a material having thermal conductivity and electrical conductivity. A terminal unit attached to one surface of the battery cell to be connected to the terminal of the battery cell to transmit current of the battery cell; It may include a heat conduction part provided on one side of the terminal part to conduct heat and a connection part connecting between a control board for controlling the battery cell and the terminal part.

Here, the material having thermal conductivity and electrical conductivity may be aluminum or an aluminum alloy material.

In addition, the thermal conductive part may be insulated to form an insulating layer on a surface thereof.

In addition, the heat conduction part may include a bending part bent to one side or multiple sides of the battery cell.

In addition, the heat conduction unit may be provided with a heat changing unit at an adjacent position to emit heat from the terminal unit or supply heat to the terminal unit according to the thermal change of the heat changing unit.

On the other hand, as another embodiment of the heat conduction unit, the heat conduction unit body; It has a plurality of insertion grooves provided at random or regular intervals along the length of the outer surface of the heat conduction part body and a thermal conductivity higher than that of the heat conduction part body, and is configured to be inserted into the insertion groove, but formed with a thickness smaller than the thickness of the insertion groove. The first cooling fluid contact surface is formed on at least one of the front and rear surfaces, the second cooling fluid contact surface is formed on the protruding upper and lower surfaces, respectively, formed to protrude outward more than the insertion groove, and the third cooling fluid contact surface is formed on the outer surface. It may be configured to include a cooling enhancing member forming a contact surface.

Here, the plate-shaped terminal may adjust the cooling performance of the heat conducting part by setting the thermal conductivity of the cooling improving member.

Meanwhile, a supercapacitor module according to an embodiment of the present invention includes a frame having a predetermined length and having electrode leads provided at one or more ends of both ends of the length; a plurality of battery cells arranged in a line along the frame; plate-type terminals respectively attached to one surface of the plurality of battery cells to transfer current between the plurality of battery cells or between the battery cells and frame electrode leads; An elastic member interposed between each end of the frame and an outermost battery cell in the array and a control board for controlling the battery cell, wherein the plate-type terminal is attached to one surface of the battery cell to be connected to the terminal of the battery cell. a terminal unit that is configured to transmit current of the battery cell; It includes a thermal conduction part provided on one side of the terminal part to conduct heat and a connection part connecting between the terminal part and a control board controlling the battery cell, and may be formed of a material having thermal conductivity and electrical conductivity.

The plate-type terminal of the supercapacitor module and the supercapacitor module including the same according to an embodiment of the present invention have the advantage of being able to simultaneously perform terminal functions, cooling functions, and control functions in an integrated form without the need for separate wires. Through this, it is manufactured to reduce the manufacturing process, so that the process cost and process time can be reduced.

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

1 is a perspective view of a supercapacitor module according to an embodiment of the present invention.
2 is an exploded view of some components of a supercapacitor module according to an embodiment of the present invention.
FIG. 3 is a detailed view of a plate-type terminal that is one component of the supercapacitor module of FIG. 1 .
4 is a schematic view showing an insulating layer formed on a heat conducting portion of a plate-type terminal according to an embodiment of the present invention when viewed from a planar direction.
5(a) and (b) are views showing a state in which heat is transferred by a heat changing means according to an embodiment of the present invention.
6 is a view showing an example of a bent portion according to an embodiment of the present invention.
7 is a view showing another example of a heat conduction 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 transformations may be applied and various embodiments may be applied. In addition, the content described below should be understood to include all conversions, equivalents, or substitutes included in the spirit and scope of the present invention.

In the following description, terms such as first and second are terms used to describe various components, and are not limited in meaning per se, and are used only for the purpose of distinguishing one component from another.

Like reference numbers used throughout this specification indicate like elements.

Singular expressions used in the present invention include plural expressions unless the context clearly dictates otherwise. In addition, terms such as "include", "include" or "have" described below are intended to designate that features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist. should be construed, and understood not to preclude 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 supercapacitor module according to an embodiment of the present invention and a supercapacitor module including the same will be described in detail with reference to the attached reference.

1 is a perspective view of a supercapacitor module according to an embodiment of the present invention, and FIG. 2 is an exploded view of some components of the supercapacitor module according to an embodiment of the present invention.

1 and 2, the supercapacitor module 1 of the present invention includes a frame 10, a battery cell 20, a plate-type terminal 30, an elastic member 50, and a control board 60. can be configured.

Specifically, the frame 10 may be configured to have a predetermined length, and may be formed as a single frame or formed by combining a plurality of frames. Preferably, a plurality of frames may be combined to facilitate mounting of the battery cells 20, and the plurality of frames may include a front frame 11, a rear frame 12, and a bottom frame 13 as shown in the drawing. , It may be configured to include the upper surface frame (15).

Here, the bottom frame 13 and the top frame 15 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 only an example, and is not limited thereto, and the configuration of the frame 10 may be variously composed.

Electrode leads 11a may be provided at one or more ends of both ends of the frame 10 . That is, when both ends of the frame 10 are constituted by the front frame 11 and the rear frame 12, the electrode lead 11a may be provided on one or more of the front frame 11 and the rear frame 12. .

The electrode lead 11a may be connected to the outermost battery cell 20 when the battery cells 20 are arranged in a row, and thus receive current from the battery cell 20 to the electrode lead 11a. It can be transmitted to the connected device.

Here, the electrode lead 11a may be directly connected to the battery cell 20, but may be preferably connected through the plate-shaped terminal 30. One feature of the present invention is to include 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 provided and arranged in a line along the frame 10 . Here, the battery cell 20 is formed to have a terminal (not shown) for supplying current. The location of the terminal of the battery cell is not limited, but preferably may be an inner surface terminal inherent in the battery cell 20. .

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

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

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

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 may be used if the thermal conductivity and electrical conductivity are set. It could be possible.

The plate-type terminal 30 may receive current from the attached battery cell 20 and transfer the current to another battery cell 20, and the plate-type terminal 30 of the outermost battery cell 20 may In this case, current can be supplied from the attached battery cell 20 and transferred to the electrode lead 11a of the frame 10 .

On the other hand, the plate-type terminal 30 may be configured to easily dissipate or absorb heat in addition to supplying current as described above, and transfer a control signal from the control board 60 to the battery cell 20 so that the battery cell 20 ) may be configured to monitor the battery cell 20 by transferring the state signal of the battery cell 20 to the control board 60 while controlling.

Detailed descriptions thereof will be described with reference to FIG. 3 while explaining each configuration of the plate-type terminal 30 .

The elastic member 50 may be interposed between each end of the frame 10 and the outermost battery cell 20 among the arrangement of the battery cells 20 . At this time, the elastic member 50 supports the frame 10 and presses the battery cell 20 in the compression direction to increase adhesion between the battery cells 20 and to buffer the space between the battery cells 20 and the frame 10. can The elastic member 50 may have various forms such as a plate spring and a coil spring.

The control board 60 is connected to the battery cell 20 and can control the battery cell 20 . In addition, the control board 60 can detect the state of the battery cell 20 by receiving a state signal from the connected battery cell 20, and through this, the battery cell 20 can be monitored.

Here, the state signal of the battery cell 20 may be a state signal for whether the battery cell 20 is operating or the battery remaining amount of the battery cell 20, and the control board 60 mediates the plate-type terminal 30. It is connected to the control board 60 to control the battery cell 20 or receive a status signal from the battery cell 20 to perform monitoring.

When the control board 60 detects an abnormality when detecting the state of the battery cell 20, the control board 60 performs notification in various ways, such as emitting an LED, emitting a sound through a speaker, or sending a text message to a connected user terminal. It is configured to do so, and monitoring of the battery cell 20 can be performed.

3 is a detailed view of a plate-type terminal, which is one component of the supercapacitor module of FIG. 1, and FIG. 4 is a schematic view showing an insulating layer formed on a heat conducting portion of a plate-type terminal according to an embodiment of the present invention when viewed from a planar direction. 5 (a) and (b) are views showing a state in which heat is transferred by the heat changing means according to an embodiment of the present invention, and FIG. 6 shows an example of a bent portion according to an embodiment of the present invention. it is a drawing

Referring to FIGS. 3 to 6 , the plate-type terminal 30 may include a terminal unit 31 , a heat conduction unit 32 and a connection unit 33 .

Specifically, the terminal unit 31 may be attached to one surface of the battery cell 20 to be connected to the terminal provided in the battery cell 20 in the form of a flat plate. At this time, the terminal unit 31 may be made of aluminum or an aluminum alloy material having thermal conductivity and electrical conductivity, and may be configured to receive current from the battery cell 20 and transfer it to another battery cell 20 or electrode lead 11a. .

The heat conduction unit 32 may be provided on one side of the terminal unit 31, and preferably may be provided in the form of a flat plate on the extension line of the terminal unit 31. At this time, the heat conducting part 32 is made of aluminum or an aluminum alloy material having thermal conductivity and electrical conductivity like the terminal part 31 so as to conduct heat between spaces or devices where the terminal part 31 and the heat conducting 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 emit heat generated in the process of transmitting current to the air layer, or a temperature higher than the temperature generated in the terminal unit 31 When confronted with a device that emits heat of, it may be configured to conduct heat generated in the device to the terminal unit 31.

Using this, a heat changing unit 70 may be provided adjacent to the heat conducting unit 32 .

The heat changing means 70 is a heating element provided to form a higher temperature than the terminal part 31 or a cooling element provided to form a lower temperature than the terminal part 31. When provided as a heating element, the heat conducting part 32 is used as a medium. 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 through the heat conducting unit 32.

That is, the heat conducting part 32 releases heat from the terminal part 31 as shown in (a) of FIG. 5 according to the heat change of the heat changing means 70 installed in the adjacent position or (b of FIG. 5). As shown in ), it may be configured to supply heat to the terminal part 31, and the heat conversion means 70 that makes the heat conduction part 32 work is an air-cooled, water-cooled or refrigerant-type cooling pipe, or a heat It may be provided with various means capable of changing heat, such as a sink, a heater, or a heating element.

The heat changing means 70 as described above is only an example and is not necessarily provided, and when the heat changing means 70 is not provided, the heat conducting part 32 is configured to face the air layer as described above, ) may be configured to release heat into the air layer.

Meanwhile, the heat conductive part 32 may be insulated to form an insulating layer 32a on the surface. The thermal conductive part 32, which is insulated so that the insulating layer 32a is formed on the surface thereof, can prevent short-circuiting due to moisture such as condensation that may occur during cooling.

In addition, the heat conducting portion 32 may include a bent portion 32b bent toward one side or multiple sides of the battery cell 20 . The bent portion 32b is located at the far end of a plane extending from the terminal portion 31 to the heat conductive portion 32 and is formed to be bent to one side or multiple sides of the battery cell 20 so as to have a heat transfer area of the heat conductive portion 32. , and the plate-type terminals 30 may be constantly aligned on the battery cell 20 .

Meanwhile, the heat conducting unit 32 may include a heat conducting unit body 321 , an insertion groove 322 , and a cooling enhancing member 323 as another example. A detailed description thereof will be described later with reference to FIG. 7 .

In addition, the connection part 33 is configured to connect between the control board 60 and the terminal part 31 for controlling the battery cell 20, and protrudes from the plate-type terminal 30 in the direction of installing the control board 60. can be configured.

At this time, the connection part 33 is shown as protruding from the heat conducting part 32 in the drawing, but this is to avoid the upper frame 10 and be connected to the control board 60, and the protruding position according to the control board 60 It can vary, so the protruding position is not limited.

The control board 60 may be connected to the battery cell 20 through the connection unit 33 to control the battery cell 20 or to monitor the state of the battery cell 20 .

7 is a view showing another example of a heat conduction unit according to an embodiment of the present invention.

Referring to FIG. 7 , the heat conducting unit 32 may include a heat conducting unit body 321 , an insertion groove 322 , and a cooling enhancing member 323 .

Specifically, the heat conduction unit body 321 may be made of aluminum or aluminum alloy material in the form of a flat plate, and the insertion groove 322 may form a random or predetermined interval along the length of the outer surface of the heat conduction unit body 321. It may be provided in multiple.

At this time, fitting pieces 322a for guiding the insertion of the cooling enhancing member 323 to be described later protrude from both ends of the insertion groove 322 so that the cooling enhancing member 323 can be inserted into the insertion groove 322.

The cooling enhancing member 323 may be inserted into the insertion groove 322 by providing a fitting groove 323a corresponding to the fitting piece 322a. In addition, the cooling improving member 323 has a higher thermal conductivity than the heat conducting part main body 321, so that the heat conducting part 32 improves cooling during a cooling action in which heat from the terminal part 31 is discharged to a cooling fluid such as air or cooling water. It can be released through the member 323.

At this time, the cooling enhancing member 323 may be formed to a thickness smaller than the thickness of the insertion groove 322 to form the first cooling fluid contact surface CP1 on at least one of the front and rear surfaces. In addition, the cooling enhancing member 323 is formed to protrude more outward than the insertion groove 322 when inserted into the insertion groove 322 to form a second cooling fluid contact surface CP2 on the protruding upper and lower surfaces, respectively. can In addition, a third cooling fluid contact surface CP3 may be formed on an outer surface of the cooling improving member 323 .

The cooling enhancing member 323 on which the first to third cooling fluid contact surfaces CP1 to CP3 are formed has a higher thermal conductivity than the heat conducting part body 321, so that heat is generated more quickly at the terminal part 31. The cooling performance of the terminal part 31 can be improved by inducing heat and quickly and effectively discharging heat to the cooling fluid through the first to third cooling fluid contact surfaces CP3.

On the other hand, if the cooling enhancing member 323 having different thermal conductivity is inserted into the insertion groove 322, the degree of cooling of the terminal part 31 may be differently formed according to the different thermal conductivity. Differently, the performance of the terminal unit 31 can be adjusted.

That is, the cooling performance of the heat conducting part 32 can be adjusted by setting the thermal conductivity of the cooling improving member 323 .

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

1: Supercapacitor module
10 : frame
11: front frame
11a: electrode lead
12: rear frame
13: bottom frame
15: top frame
20: battery cell
30: plate type terminal
31: terminal part
32: heat conduction unit
32a: insulating layer
32b: bent portion
321: heat conduction unit body
322: insertion groove
322a: fitting piece
323: cooling improving member
323a: fitting groove
33: connection part
50: elastic member
60: control board
70: heat change means
CP1: first cooling fluid contact surface
CP2: Second cooling fluid contact surface
CP3: Third cooling fluid contact surface

Claims (8)

A plate-type terminal attached to one side of a battery cell constituting a supercapacitor module and made of a material having thermal conductivity and electrical conductivity,
A terminal unit that is attached to one surface of the battery cell in the form of a flat plate and is connected to an inner surface terminal inherent in the battery cell to transmit current of the battery cell;
A heat conduction portion provided in a flat plate shape on an extension line reaching the edge of the battery cell from the terminal portion and conducting heat to the terminal portion; and
A plate-type terminal of a supercapacitor module including a connection part connecting between a control board for controlling the battery cell and a terminal part.
According to claim 1,
The material having thermal conductivity and electrical conductivity,
A plate-type terminal of a supercapacitor module, characterized in that it is made of aluminum or aluminum alloy.
According to claim 1,
The heat conduction part,
A plate-type terminal of a supercapacitor module, characterized in that it is insulated to form an insulating layer on the surface.
According to claim 1,
The heat conduction part,
A plate-type terminal of a supercapacitor module including a bent portion bent to one side or multiple sides of the battery cell.
According to claim 1,
The heat conduction part,
A plate-type terminal of a supercapacitor module, characterized in that a heat changing means is provided at an adjacent position, configured to dissipate heat from the terminal unit or supply heat to the terminal unit according to the heat change of the heat changing means.
According to claim 1,
The heat conduction part,
a heat conduction unit body;
A plurality of insertion grooves provided at random or regular intervals along the length of the outer surface of the heat conducting part body, and
It has a higher thermal conductivity than the heat conducting part body and is configured to be inserted into the insertion groove, and is formed with a thickness smaller than the thickness of the insertion groove to form a first cooling fluid contact surface on at least one of the front and rear surfaces, and further outward than the insertion groove. A plate-type terminal of a supercapacitor module comprising a cooling enhancing member protruding to form a second cooling fluid contact surface on the protruding upper and lower surfaces, respectively, and forming a third cooling fluid contact surface on an outer surface.
According to claim 6,
A plate-type terminal of a supercapacitor module, characterized in that the cooling performance of the heat conducting part can be adjusted by setting the thermal conductivity of the cooling improving member.
a frame having a predetermined length and provided with electrode leads at at least one end of both ends of the length;
a plurality of battery cells arranged in a line along the frame;
plate-type terminals respectively attached to one surface of the plurality of battery cells to transfer current between the plurality of battery cells or between the battery cells and frame electrode leads;
An elastic member interposed between each end of the frame and the outermost battery cell of the array, and
It includes a control board for controlling the battery cell,
The plate type terminal,
A terminal unit that is attached to one surface of the battery cell in the form of a flat plate and is connected to an inner surface terminal inherent in the battery cell to transmit current of the battery cell;
A heat conduction portion provided in a flat plate shape on an extension line reaching the edge of the battery cell from the terminal portion and conducting heat to the terminal portion; and
A connection part connecting between a control board for controlling the battery cell and a terminal part,
A supercapacitor module characterized in that it is formed of a material having thermal conductivity and electrical conductivity.

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