KR101936800B1 - Energy storage apparatus integrated with case - Google Patents

Energy storage apparatus integrated with case Download PDF

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Publication number
KR101936800B1
KR101936800B1 KR1020140168964A KR20140168964A KR101936800B1 KR 101936800 B1 KR101936800 B1 KR 101936800B1 KR 1020140168964 A KR1020140168964 A KR 1020140168964A KR 20140168964 A KR20140168964 A KR 20140168964A KR 101936800 B1 KR101936800 B1 KR 101936800B1
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South Korea
Prior art keywords
case
terminal
energy storage
bare cell
storage device
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KR1020140168964A
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Korean (ko)
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KR20160064816A (en
Inventor
이정걸
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엘에스엠트론 주식회사
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/13—Energy storage using capacitors

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

A technology relating to a case-integrated energy storage device is disclosed.
A case-integrated energy storage device according to the present invention includes: a unit module case having a plurality of accommodating portions for accommodating bare cells through openings; A terminal case having a hole for projecting a terminal of the bare cell accommodated in the accommodating portion to the outside and being coupled to the opening of the accommodating portion; And a pad portion positioned between the coupled terminal case and the received bare cell to form a predetermined space in the accommodating portion, thereby improving the heat dissipation efficiency and the withstand voltage characteristics as well as improving the expandability and applicability .

Description

[0001] The present invention relates to an energy storage apparatus integrated with a case,

The present invention relates to a case-integrated energy storage device, and more particularly, to a case-integrated energy storage device that simultaneously improves heat dissipation efficiency and breakdown voltage characteristics, as well as improves expandability and applicability.

Currently, a typical energy storage device used for storing electric energy includes a battery and a capacitor.

Particularly, the high capacitance storage device may include an ultra capacitor (UC), a super capacitor (SC), an electric double layer capacitor (EDLC), etc., which are a kind of capacitors, It is an energy storage device having intermediate characteristics of a capacitor and a secondary battery. It is a next generation energy storage device which can be used together with a secondary battery or replace it due to its high efficiency and semi-permanent lifetime characteristics.

However, since the voltage of the unit cell of the high-capacitance storage device is only about 3 [V], it needs to be a high-voltage module of several thousand farads or several hundreds of voltage in order to use it as a high-voltage battery. That is, in order to realize such a high-voltage module, a high-voltage assembly must be constructed by connecting each unit high-capacitance storage device in series or in series or in parallel with a required number of units. However, when modularizing the high capacitance storage device assembly, it is possible to improve the energy storage characteristics by driving a plurality of high capacitance storage devices together. However, the heat generated when the high capacitance storage device module is driven sharply , Which may deteriorate the withstand voltage characteristic of the high capacitance storage device and cause deterioration of the life span and stability. Therefore, the number of high-capacitance storage devices capable of configuring the high-capacitance storage device module or the application environment of the high-capacitance storage device module is limited. As a result, there is a demand for a technology for improving the heat dissipation efficiency as well as the withstand voltage characteristic of an energy storage module such as a high capacitance storage device module.

However, as disclosed in Patent Registration No. 10-1205331 and the like, existing technologies have been developed in which bare cells are packed in a cell case to construct energy storage cells, It is accommodated in the outer case and modularized. Therefore, there is a problem that heat dissipation efficiency is very low because heat can not be radiated through a bus bar connecting cells and cells.

Also, as disclosed in the patent application No. 10-2014-0093460, the existing technology has a problem that it does not provide any means for improving the withstand voltage characteristic inside the energy storage cell.

Moreover, existing technologies have the problem of not providing any means to enhance the scalability and applicability of the energy storage device by uniting the energy storage device with the unit module and facilitating the coupling between the unit modules.

SUMMARY OF THE INVENTION The present invention provides a case-integrated energy storage device capable of simultaneously improving the heat dissipation efficiency as well as the withstand voltage characteristics of a high-voltage energy storage device.

It is also an object of the present invention to provide a case-integrated energy storage device capable of improving the scalability and applicability of energy storage devices.

According to an aspect of the present invention, there is provided a case-integrated energy storage device comprising: a unit module case having a plurality of receiving portions for receiving bare cells through openings; A terminal case having a hole for projecting a terminal of the bare cell accommodated in the accommodating portion to the outside and being coupled to the opening of the accommodating portion; And a pad portion positioned between the coupled terminal case and the received bare cell to form a predetermined space in the accommodating portion.

In one embodiment, the terminal case may include a groove that is bent outwardly of the receiving portion on one side of the terminal case opposite to the received bare cell.

In one embodiment, the unit module case may include a fastening portion coupled to another unit module case by a predetermined fastening member.

In one embodiment, the fastening portion includes: a first fastening portion coupled to another unit module case located on a side surface of the unit module case by a predetermined fastening member; And a second fastening portion coupled to another unit module case located on an upper surface or a lower surface of the unit module case by a predetermined fastening member.

In one embodiment, the pad portion may be a sealing pad positioned around the hole of the terminal case and sealing the gap between the hole and the terminal of the received bare cell.

In one embodiment, the case-integrated energy storage device may further include an insulation unit for insulating the terminal case and terminals of the received bare cell.

A case-integrated energy storage device according to an embodiment of the present invention includes a plurality of unit module cases each having a plurality of accommodating portions for accommodating bare cells through openings and coupled to each other by a predetermined fastening member; A terminal case having a hole for projecting a terminal of the bare cell accommodated in the accommodating portion to the outside and being coupled to the opening of the accommodating portion; And a pad portion positioned between the coupled terminal case and the received bare cell to form a predetermined space in the accommodating portion.

In one embodiment, the terminal case may include a groove that is bent outwardly of the receiving portion on one side of the terminal case opposite to the received bare cell.

In one embodiment, the pad portion may be a sealing pad positioned around the hole of the terminal case and sealing the gap between the hole and the terminal of the received bare cell.

In one embodiment, the case-integrated energy storage device may further include an insulation unit for insulating the terminal case and terminals of the received bare cell.

In one embodiment, the case-integrated energy storage device may further include a coupling module cover coupled to one surface of the plurality of unit module cases from which the terminal of the received bare cell protrudes.

In one embodiment, the coupling module cover may include a terminal hole for projecting the terminal of the energy storage device to the outside.

According to the present invention, the cell case of each of the plurality of energy storage cells is integrated with the outer case for modularization of the energy storage cell, and a predetermined space is ensured inside the accommodating part in which the bare cell is accommodated, Of course, the withstand voltage characteristics can be simultaneously improved.

In addition, the energy storage device can be modularized and the unit modules can be easily combined, thereby improving the scalability and applicability of the energy storage device.

It will be apparent to those skilled in the art that various embodiments of the present invention can be accomplished without departing from the spirit and scope of the invention.

1 is a perspective view illustrating a unit energy storage module of a case-integrated energy storage device according to an embodiment of the present invention.
FIG. 2A is a cross-sectional view showing a portion AA 'in FIG. 1; FIG.
Figure 2b is an enlarged view of Figure 2a.
3 is a perspective view of a case-integrated energy storage device according to an embodiment of the present invention.
4 is an exploded perspective view showing a case-integrated energy storage device according to an embodiment of the present invention.
5 is a perspective view illustrating a case-integrated energy storage device 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 in order to clarify means for solving the technical problem of the present invention. In the following description of the present invention, however, the description of related arts will be omitted if the gist of the present invention becomes obscure. In addition, the terms described below are defined in consideration of the functions of the present invention, and may be changed depending on the intention or custom of the designer, the manufacturer, and the like. Therefore, the definition should be based on the contents throughout this specification.

FIG. 1 is a perspective view of a unit energy storage module of a case-integrated energy storage device according to an embodiment of the present invention.

1, a unit energy storage module 100 of a case-integrated energy storage device according to an embodiment of the present invention may be configured to pack a bare cell of an energy storage device, A plurality of bare cells are directly accommodated in the unit module case 110 without using a separate cell case that constitutes a cell. To this end, the unit module case 110 has a plurality of receiving portions 112 for receiving the bare cells. The terminal case 130 is coupled to the opening of the receiving part 112, respectively. As described above, by constructing the energy storage module by housing a plurality of bare cells directly in a single unit module case 110, it is possible to improve the heat dissipation efficiency, particularly, the side heat dissipation efficiency and reduce the manufacturing cost.

2A is a cross-sectional view taken along the line A-A 'in FIG.

Figure 2b shows an important part of Figure 2a in enlarged scale.

2A and 2B, a case-integrated energy storage device according to an embodiment of the present invention includes a unit module case 110, a terminal case 130, and a pad unit 140. As described above, the unit module case 110 has a plurality of receiving portions 112, and the receiving portion 112 includes a bare cell 120 for storing energy, the receiving portion 112 As shown in Fig.

The terminal case 130 has a hole 132 for protruding the terminal 122 of the bare cell 120 accommodated in the accommodating portion 112 to the outside and the opening 114 of the accommodating portion 112, Lt; / RTI > In this case, the terminal case 130 may be coupled to the opening 114 in such a manner as to seal the receiving portion 112, such as welding.

The pad portion 140 is positioned between the terminal case coupled to the opening 114 of the accommodating portion 112 and the accommodated bare cell 120 to form a predetermined clearance space in the accommodating portion 112. That is, the pad unit 140 is disposed between the terminal case 130 and the received bare cell 120 to separate the terminal case 130 and the received bare cell 120 from each other.

In more detail, an electrolyte solution or the like is filled in the inner space of the accommodating portion 112 in which the bare cell 120 is accommodated. The pad 140 prevents leakage of the electrolytic solution and prevents leakage of the electrolyte solution when the terminal case 130 is formed of a conductive material and between the terminal case 130 and the terminal 122 of the bare cell 120. [ Can be used as an insulation function.

Particularly, the pad portion 140 forms an extra space 142 in the inner space of the receiving portion 112 together with the terminal case 130. The high capacitance storage devices may generate side reactions as a byproduct at the interface between the electrolyte and the electrode plate when an abnormal operation such as overcharge or overdischarge occurs at room temperature. Therefore, in order to prevent deformation or explosion due to the internal generated gas, the pad portion 140 forms a constant clearance space 142 in the accommodating portion 112 together with the terminal case 130, It is possible to improve the withstand voltage characteristic of the semiconductor device. The pad portion 140 is a sealing pad sealing the gap between the hole 132 of the terminal case 130 and the terminal 122 of the bare cell 120, It may be an insulating pad.

In this case, the terminal case 130 may include a groove that is bent outwardly of the receiving portion on one side of the terminal case 130 facing the received bare cell 120. The terminal space 130 of the terminal housing 130 formed with the pad portion 140 can be further extended to allow the space 142 to be expanded inside the terminal housing 130. As a result, The improvement effect can be further enhanced. 2A and 2B show a groove formed by a step on the one surface of the terminal case 130. However, the groove of the terminal case 130 may be implemented in various forms according to design purposes, intentions, and the like Of course.

In one embodiment, the case-integrated energy storage device according to the present invention may further include an insulating portion 150 for insulating between the terminal case 130 and the terminals 122 of the received bare cell 120 have. In order to improve the heat radiating effect, it is preferable that not only the unit module case 110 but also the terminal case 130 are made of a conductive material such as a metal. The pad portion 140 may be integrally formed with the insulating portion 150 according to an embodiment of the present invention.

The terminal 122 of the bare cell 120 protrudes through the hole 132 of the terminal case 130 and is fixed by a nut member 160 such as a nut, And the like.

The case-integrated energy storage device according to the present invention can use a single unit energy storage module 100 or a plurality of unit energy storage modules 100 in combination.

FIG. 3 is a perspective view of a case-integrated energy storage device according to an embodiment of the present invention.

4 is an exploded perspective view of a case-integrated energy storage device according to an embodiment of the present invention.

3 and 4, the case-integrated energy storage device 200 according to an embodiment of the present invention may include a coupling module combining a plurality of unit energy storage modules 100a, 100b, and 100c . In this case, the unit module case 110a of each unit energy storage module 100a is coupled to the unit module case 110b of the other unit energy storage module 100b by predetermined fastening members 210 and 212 116, 118). 3 and 4, when the support panel 210 and the bolt 212 are used as the fastening members 210 and 212, a plurality of threaded grooves may be formed in the fastening portions 116 and 118 It is to be understood that various changes and modifications may be made without departing from the scope of the present invention.

4, a cell balancing circuit board 170 may be disposed in the unit energy storage modules 100a, 100b, and 100c to perform energy balancing for each cell, The cell terminals can be electrically connected using the bus bar 180 or the like. In one embodiment, the energy storage device 200 includes a plurality of unit module cases 110a, 110b, and 110c protruding from terminals of the bare cell housed in the energy storage device 200, And may further include a module cover 220. The coupling module cover 220 protects the cell balancing circuit board 170 and the like and uses a coupling module in which the plurality of unit energy storage modules 100a, 100b, and 100c are combined as an extended unit energy storage module . To this end, the coupling module cover 220 may include a terminal hole 222 for protruding the terminal 230 of the energy storage device 200 to the outside.

In addition, since the case-integrated energy storage device according to the present invention has high side heat dissipation efficiency, the energy storage device 200 may be arranged in a laminated form. In this case, the coupling portions 116 and 118 of the unit module case 110a are coupled to the other unit module case 110b located on the side surface of the unit module case 110a by the predetermined coupling member 210 And a second fastening part 118 which includes the first fastening part 116 and is coupled to another unit module case located on the upper surface or the lower surface of the unit module case 110a by a predetermined fastening member can do.

FIG. 5 is a perspective view of a case-integrated energy storage device according to another embodiment of the present invention.

As shown in FIG. 5, the case-integrated energy storage device 300 according to another embodiment of the present invention includes an energy storage device 200 of FIG. 3, Energy storage devices. In this case, the first intermediate energy storage module 200a and the second intermediate energy storage module 200b are coupled by a predetermined fastening member 310 fastened to the second fastening portion 118 shown in FIG. 4 . For example, the first and second energy storage modules 200a and 200b may be coupled to each other using the support panel and the bolts as the coupling member 310. It is a matter of course that the fastening member 310 may be variously modified according to the embodiment.

Meanwhile, the intermittent energy storage modules 200a and 200b may be provided with coupling module covers 220a and 220b to protect the cell balancing circuits disposed in the intermittent energy storage modules 200a and 200b . The shapes of the coupling module covers 220a and 220b can be appropriately modified in accordance with the intention of the designer, the manufacturer, and the like. Also, in one embodiment, the coupling module cover 220a may not be used between the first and second energy storage modules 200a and 200b, The upper end of the casing upper end of the storage module 200a may be extended upwardly or the lower end of the lower end of the casing of the energy storage module 200b may be extended downward so that a predetermined space is formed between the coupling surfaces And may also protect cell balancing circuits disposed in the energy storage modules 200a and 200b at the stop.

As described above, according to the present invention, by integrating the cell case of each of the plurality of energy storage cells and the outer case for modularization of the energy storage cell, and securing a predetermined space in the accommodating part in which the bare cell is accommodated, The heat dissipation efficiency of the device as well as the withstand voltage characteristics can be improved at the same time. In addition, the energy storage device can be modularized and the unit modules can be easily combined, thereby improving the scalability and applicability of the energy storage device. Furthermore, it is to be understood that various embodiments in accordance with the present invention may solve many technical problems in the art, as well as those described in the related art.

The present invention has been described with reference to the embodiments. It will be apparent, however, to one skilled in the art that the present invention may be embodied in various forms within the spirit and scope of the present invention. Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. That is, the true technical scope of the present invention is indicated in the appended claims, and all differences within the scope of equivalents thereof should be construed as being included in the present invention.

100: case integrated energy storage device 110: unit module case
120: bare cell 122: terminal
130: terminal case 140: pad portion
150: insulation part 160: fastening member

Claims (12)

A unit module case having a plurality of receiving portions each accommodating a bare cell through an opening;
A terminal case having a hole for projecting a terminal of the bare cell accommodated in the accommodating portion to the outside and being coupled to the opening of the accommodating portion to seal the accommodating portion; And
And a pad portion positioned between the coupled terminal case and the received bare cell to form a predetermined space in the receiving portion,
An electrolytic solution is filled in the internal space of the accommodating portion,
Wherein the pad portion is a sealing pad that is positioned around the hole of the terminal case and seals a gap between the hole and the terminal of the received bare cell. The method according to claim 1,
Wherein the terminal case includes a groove on one surface of the terminal case opposite to the received bare cell, the groove being bent outwardly of the accommodating portion. The method according to claim 1,
Wherein the unit module case includes a coupling portion that is coupled to another unit module case by a predetermined fastening member. The method of claim 3,
The fastening portion
A first fastening part coupled to another unit module case located on a side surface of the unit module case by a predetermined fastening member; And
And a second fastening part coupled to another unit module case located on an upper surface or a lower surface of the unit module case by a predetermined fastening member. delete The method according to claim 1,
Wherein the case-integrated energy storage device further comprises an insulation part for insulating the terminal case and terminals of the received bare cell from each other. A plurality of unit module cases each having a plurality of receiving portions for receiving bare cells through openings and coupled to each other by a predetermined fastening member;
A terminal case having a hole for projecting a terminal of the bare cell accommodated in the accommodating portion to the outside and being coupled to the opening of the accommodating portion to seal the accommodating portion; And
And a pad portion positioned between the coupled terminal case and the received bare cell to form a predetermined space in the receiving portion,
An electrolytic solution is filled in the internal space of the accommodating portion,
Wherein the pad portion is a sealing pad that is positioned around the hole of the terminal case and seals a gap between the hole and the terminal of the received bare cell. 8. The method of claim 7,
Wherein the terminal case includes a groove on one surface of the terminal case opposite to the received bare cell, the groove being bent outwardly of the accommodating portion. delete 8. The method of claim 7,
Wherein the case-integrated energy storage device further comprises an insulation part for insulating the terminal case and terminals of the received bare cell from each other. 8. The method of claim 7,
Wherein the case-integrated energy storage device further comprises a coupling module cover coupled to one surface of the plurality of unit module cases from which the terminal of the received bare cell protrudes. 12. The method of claim 11,
Wherein the coupling module cover includes a terminal hole for projecting a terminal of the energy storage device to the outside.
KR1020140168964A 2014-11-28 2014-11-28 Energy storage apparatus integrated with case KR101936800B1 (en)

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Application Number Priority Date Filing Date Title
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KR101936800B1 true KR101936800B1 (en) 2019-01-09

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Publication number Priority date Publication date Assignee Title
KR101894519B1 (en) * 2016-07-12 2018-09-04 인우에너지 주식회사 Hybrid energy storage system
KR102381962B1 (en) * 2018-11-29 2022-04-01 주식회사 엘지에너지솔루션 Battery Pack Having Heat Dissipating Member

Citations (2)

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Publication number Priority date Publication date Assignee Title
JP2007150014A (en) * 2005-11-29 2007-06-14 Matsushita Electric Ind Co Ltd Electric storage device
KR100867928B1 (en) * 2007-09-27 2008-11-10 삼성에스디아이 주식회사 Protection circuit module and battery pack using the same

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Publication number Priority date Publication date Assignee Title
WO2012035683A1 (en) * 2010-09-17 2012-03-22 パナソニック株式会社 Battery block and battery module
US20120263991A1 (en) * 2010-11-29 2012-10-18 Hiroshi Temmyo Battery pack
KR101847182B1 (en) * 2011-07-07 2018-04-10 에스케이이노베이션 주식회사 Battery having Heat-Conductive Case for Water Cooling
KR101458600B1 (en) * 2013-01-18 2014-11-05 엘에스엠트론 주식회사 Ultra capacitor module for heat dissipation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007150014A (en) * 2005-11-29 2007-06-14 Matsushita Electric Ind Co Ltd Electric storage device
KR100867928B1 (en) * 2007-09-27 2008-11-10 삼성에스디아이 주식회사 Protection circuit module and battery pack using the same

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