JP2002245992A - Battery pack - Google Patents

Battery pack

Info

Publication number
JP2002245992A
JP2002245992A JP2001040986A JP2001040986A JP2002245992A JP 2002245992 A JP2002245992 A JP 2002245992A JP 2001040986 A JP2001040986 A JP 2001040986A JP 2001040986 A JP2001040986 A JP 2001040986A JP 2002245992 A JP2002245992 A JP 2002245992A
Authority
JP
Japan
Prior art keywords
formed
housing
unit cells
cells
battery pack
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2001040986A
Other languages
Japanese (ja)
Inventor
Makoto Motono
Haruyoshi Yamashita
Takehito Yoda
武仁 依田
晴義 山下
誠 本野
Original Assignee
Toyota Motor Corp
トヨタ自動車株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyota Motor Corp, トヨタ自動車株式会社 filed Critical Toyota Motor Corp
Priority to JP2001040986A priority Critical patent/JP2002245992A/en
Publication of JP2002245992A publication Critical patent/JP2002245992A/en
Pending legal-status Critical Current

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage
    • Y02E60/12Battery technologies with an indirect contribution to GHG emissions mitigation

Abstract

PROBLEM TO BE SOLVED: To provide a battery pack which can be easily assembled. SOLUTION: A resin plate 22 is integrally adhered onto a superposed surface 20 of a cell 10. By such a constitution, in the case where the cells 10 are superposed to form the battery pack 34, a gap is formed between the 10 by the resin plate 22. Therefore, it is not required that a spacer for insulating box bodies of the cells 10 having potentials each other and ensuring a heat-releasing property of the cells 10 is inserted between the cells 10. Accordingly, an assembling of the battery pack 34 is facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an assembled battery formed by stacking a plurality of unit cells to be mounted on a vehicle.

[0002]

2. Description of the Related Art A vehicle such as an electric vehicle or a hybrid vehicle in which a vehicle is driven by a motor is equipped with a secondary battery as a drive source. When a secondary battery is used as a motor driving source, it is necessary to connect a plurality of secondary batteries in series to obtain a high voltage. It is common to construct

[0003] In a battery pack mounted on a vehicle, a nickel metal hydride battery or a lithium ion secondary battery is often used as a secondary battery.
It generates heat during charging and discharging. Also, when the battery temperature rises,
There is a possibility that the discharge capacity is reduced or the electrode is deteriorated.
Therefore, it is necessary to cool each cell constituting the assembled battery.

For example, in a battery pack described in Japanese Patent Application Laid-Open No. 11-126585, a spacer made of an insulating material having a strip shape, a cross shape, a comb shape, or the like is inserted between cells. Thereby, a distance is provided between the unit cell and the unit cell adjacent thereto. This allows
The heat generated from the unit cell is prevented from increasing the temperature of the adjacent unit cell, and the heat generated from the unit cell is radiated.

[0005]

However, in the battery pack described in the above publication, since a spacer must be inserted between the cells, there is a problem that it takes time to assemble the battery pack. is there.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an assembled battery which is easy to assemble.

[0007]

The gist of the present invention to achieve the above object is to provide an assembled battery formed by stacking a plurality of unit cells, wherein the housing of the unit cell is provided. The present invention lies in that an insulating portion is formed integrally with an electrode or an electrolytic solution in a housing and on a lamination surface of the unit cell.

According to this structure, since the insulating portion is integrally formed on the laminated surface of the unit cells, when the unit cells are directly laminated, the insulating portion is formed between the laminated surfaces of the unit cells adjacent to each other. A distance corresponding to the thickness results. Therefore, it is not necessary to insert a spacer for providing a predetermined distance between adjacent unit cells, so that assembly of the assembled battery is facilitated.

Here, preferably, a gap through which air flows is formed between the lamination surfaces of the unit cells adjacent to each other by the insulating portion. With this configuration, the air can flow through the gap formed by the insulating portion, so that the unit cells can be cooled more efficiently. Further, since the gap is formed by the insulating portion integrally formed with the unit cells, the variation of the gap formed between the unit cells is reduced, so that the unit cells are uniformly cooled. There are also advantages. Note that a gap can be formed between the stacking surfaces of the unit cells by inserting a spacer. In that case, however, the position of the spacer in the stacking surface direction varies, so that the gap formed by the spacer also varies. There is a problem that occurs.

[0010] Preferably, the housing has an insulating film formed on the laminating surface, and a protruding portion protruding in the laminating direction is formed on the laminating surface of the housing. Department. With this configuration, when the unit cells are stacked, a gap is formed between the unit cells by the protrusion formed on the stacking surface of the unit cells, so that an assembled battery having a high cooling effect can be obtained without inserting a spacer. In addition, since a gap is formed between the unit cells by the shape of the housing itself, the manufacturing cost can be reduced as compared with the case where the insulating member is fixed to the lamination surface by bonding or the like.

[0011]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Figure 1
Is a cell 1 used in the battery pack 34 (FIG. 4) of the present invention.
FIG. This single cell 10 is a lithium ion secondary battery. The cell 10 has a flat and substantially square housing 12. This housing 12 is made of stainless steel,
It is made of a metal material such as aluminum or nickel-plated steel. The case 12 is made of a metal material for the following reason. The normal voltage of a lithium ion secondary battery is 3 to 4 V, but if water is mixed in, the voltage drops to the potential (1.2 V) of water electrolysis. Therefore, it is necessary to prevent water contamination, but the resin allows moisture to pass through,
When a resin is used for the housing, moisture in the air enters the battery. Therefore, a metal case that does not allow moisture to pass through is used. A flat insulating plate 14 having the same planar shape as the upper and lower surfaces of the housing 12 is provided on an upper portion of the housing 12. A positive terminal 16 protrudes from the insulating plate 14 at the center of the insulating plate 14, and a negative terminal 18 protrudes at one end in the longitudinal direction.

A disk-shaped resin plate 22 functioning as an insulating portion is fixed to one of the pair of laminated surfaces 20 of the housing 12 at an approximate center thereof by bonding. If the size of the resin plate 22 is too small, when the cells 10 are stacked on each other and pressed from both ends in the stacking direction, the positions of the cells 10 become unstable and the stacked surfaces 20 contact each other. Therefore, the resin plate 22 needs to have a certain size, but if it is too large, the heat radiation from the housing 12 may be greatly impaired. Therefore, the size of the resin plate 22 is such that when the unit cells 10 are stacked on each other and pressed from both sides in the stacking direction, the position of each unit cell 10 does not become unstable due to the pressing, and The size is set so as not to impair the heat radiation of the battery 10 so much. When the resin plate 22 has a disk shape as shown in FIG. 1, the position of the stacked unit cells 10 can be stabilized with a relatively small size. On the other hand, if the resin plate 22 is too thin, the gap formed between the unit cells 10 becomes narrow, and the cooling efficiency of the unit cells 10 becomes insufficient. Since the entire volume energy density decreases, the thickness of the resin plate 22 is set to be as thin as possible within a range where sufficient cooling efficiency can be achieved.

FIG. 2 is a plan view of the unit cell 10 with the insulating plate 14 and an upper wall (not shown) of the housing 12 removed, showing the internal structure of the unit cell 10. FIG. 3 is a sectional view taken along line AA of FIG.

As shown in FIGS. 2 and 3, the unit cell 10 of this embodiment is of a spiral type, and a separator 24, a negative electrode plate 26, a separator 24, and a positive electrode plate 28 are sequentially provided inside a housing 12. The laminated strip-shaped electrode layer 30 is
Are wound around the positive electrode terminal 16 located at the center of. In FIG. 3, the separator 24 is used for convenience.
The length in the vertical direction (length in the width direction) is the same as the length in the vertical direction of the negative electrode plate 26 and the positive electrode plate 28. However, in order to prevent contact between the negative electrode plate 26 and the positive electrode plate 28, The length in the width direction of the separator 24 is slightly longer than the negative electrode plate 26 and the positive electrode plate 28.

As shown in FIG. 3, a positive electrode plate 28 is disposed on the inner peripheral side of the electrode layer 30, and the axial center end of the positive electrode plate 28 is, as shown in FIG. Is wrapped around. Further, a negative electrode lead plate 32 is provided at an end on the outer side in the winding direction of the electrode layer 30. The negative electrode lead plate 32 is fixed to an end of the negative electrode plate 26 and is connected to the negative electrode terminal 18.

Further, the casing 12 is filled with an organic electrolytic solution (not shown). As the organic electrolyte, for example, a solution obtained by dissolving LiPF 6 at a predetermined ratio in a mixed solvent of propylene carbonate and diethyl carbonate is used. FIG.
As shown in the figure, the inner peripheral surface of the housing 12 is in contact with the separator 24, but the space between the housing 12 and the separator 24 is also filled with the organic electrolytic solution. It will have the same potential as the liquid.

FIG. 4 is an exploded perspective view of the battery pack 34.
As shown in FIG. 4, in the battery pack 34, a plurality of unit cells 10 are stacked on each other in the thickness direction, and a pair of end plates 36 and 38 are further stacked on both ends in the stacking direction. Although the end plates 36 and 38 are both made of metal, the same resin plate 22 fixed to the unit cell 10 is adhered to one end plate 36 on the surface to be overlapped with the unit cell 10. .

Except that the resin plate 22 is adhered, the pair of end plates 36 and 38 have the same structure, and the upper edges of the end plates 36 and 38 have two upper projections 40 projecting upward. The lower edges of the end plates 36 and 38 are formed with two lower convex portions 42 protruding downward.

Each of the upper convex portion 40 and the lower convex portion 42 is provided with a hole into which the restraining rod 44 is inserted, and the upper convex portion 40 formed on one end plate 36 is provided.
(Or lower convex portion 42) and the other end plate 3
8, the upper convex portion 4 of the one end plate 36 is provided.
The ends of the restraining rods 44 are respectively inserted into the holes of the upper convex portion 40 (or the lower convex portion 42) facing 0. Then, a pair of end plates 36, 38 and a plurality of cells 10 located between the end plates 36, 38 are pressed in a direction approaching each other by a bolt 46 fitted into the end of the restraining rod 44. Thus, the assembled battery 34 is assembled. The battery pack 34 is further covered with an upper case and a lower case (not shown).

FIG. 5 is a plan view of the battery pack 34. The assembled battery 34 is connected in series by connecting the positive terminal 16 and the negative terminal 18 of the adjacent cells 10 by a conductive lead wire 48. Also, as shown in FIG.
A gap S is formed between the resin plates 22, and the gap S serves as a cooling passage, through which air for cooling the unit cell 10 flows. The air flowing through the gap S may be forced to flow by a fan or the like, or may flow naturally by the temperature difference between the cell 10 and its surroundings caused by the heat generated by the cell 10. You may.

As described above, in this embodiment, the unit cell 10
Since the resin plates 22 are integrally formed on the stacking surfaces 20 of the battery cells, when the unit cells 10 are directly stacked, the thickness of the resin plate 22 corresponds to the thickness between the stack surfaces 20 of the unit cells 10 adjacent to each other. Distance occurs. Accordingly, there is no need to insert a spacer for providing a predetermined distance between the adjacent cells 10, so that the assembly of the assembled battery 34 becomes easy.

The laminated surface 20 of the unit cell 10 of this embodiment
Since the space is insulated by the resin plate 22, the housing 12
There is no contact between them. Therefore, the housing 12 does not need to be insulated from the negative electrode plate 26, the positive electrode plate 28, and the electrolyte in the housing 12. There is no need to provide an insulating film for insulating them, and the configuration of the unit cell 10 is simplified.

Further, according to the present embodiment, since the air can flow through the gap S formed by the resin plate 22, the unit cells 10 can be cooled more efficiently. Further, since this gap is formed by the resin plate 22 formed integrally with the unit cells 10, variations in the gaps S formed between the unit cells 10 are reduced.
Each cell 10 also has the advantage of being uniformly cooled.

Next, another embodiment of the present invention will be described. FIG. 6 is a view showing a unit cell 50 used for a battery pack different from the above-described embodiment, and shows a state in which an upper wall of a housing 52 is removed. The housing 52 is made of a metal material such as stainless steel, aluminum, and nickel-plated steel, similarly to the housing 12 of the above-described embodiment. The configuration inside the housing 52 is the same as that of the unit cell 10 of the above-described embodiment. Therefore, the housing 52 has the same potential as the electrolytic solution. However, the outer peripheral surface of the housing 52 is covered with the insulating coating 54. As the insulating film 54, a coating film formed of an insulating paint, or alumina (Al) formed by an anodic oxidation method when the housing 52 is made of aluminum.
2 O 3 ) can be used.

On one of the pair of laminated surfaces 56 of the housing 52, three projecting ridges 58 parallel to the height direction of the housing 52 are formed by making a part of the housing 52 thick. Is formed. These three ridges 58 have the same shape, each has a substantially triangular horizontal cross section, and the thickness of the ridge 58 (the maximum horizontal cross section of the ridge 58 in the width direction of the unit cell 50). The length) is set to a height such that the cooling efficiency of the unit cell 50 is ensured to some extent and the volume energy density of the entire assembled battery is not significantly reduced. In addition, the three ridges 58 are provided at positions that divide the laminated surface 56 into approximately four equal parts. The housing 52 having such a shape is, for example,
It is formed by drawing, plastic working, etc.

The protrusions 58 function as protrusions in the present embodiment. When assembling the assembled battery, a plurality of cells 50 are stacked on the laminated surface 56 having the protrusions 58.
And the stacking surface 56 having no ridges 58 is opposed to each other. Then, similarly to the above-described embodiment, a plurality of unit cells 50 are stacked from both ends in the stacking direction by end plates and constraint rods (not shown). Press in the direction approaching each other. When the battery is assembled as described above, the ridge 5
8 forms a gap between the cells 50. Also, since the ridge 58 is coated with the insulating film 54, the ridge 5
8 also functions as an insulating part.

As described above, the cell 50 of this embodiment is
Since the ridge 58 is integrally formed on the laminated surface 56,
When the unit cells 50 are directly stacked, a distance corresponding to the thickness of the ridge 58 is generated between the stacked surfaces 56 of the unit cells 50 adjacent to each other. Therefore, since it is not necessary to insert a spacer between the adjacent unit cells 50, the assembly of the assembled battery is facilitated.

Further, a gap is formed between the unit cells 50 by the ridges 58, and air can flow through the gap, so that the unit cell 50 is cooled more efficiently. Further, since the gap is formed by the ridge 58 integrally formed with the unit cells 50, the variation of the gaps formed between the unit cells 50 is reduced, so that each unit cell 50 There is also the advantage of being uniformly cooled.

Further, since a gap is formed between the unit cells 50 by the shape of the housing 52 itself, the manufacturing cost can be reduced as compared with a case where an insulating member is fixed to the laminated surface 56 by bonding or the like. it can.

Although one embodiment of the present invention has been described with reference to the drawings, the present invention can be applied to other embodiments.

For example, the unit cell 10 of the first embodiment described above
Although the disk-shaped resin plate 22 is used as the insulating portion, the shape is not particularly limited to a disk, and may be another shape such as a rectangular plate. Further, the resin plate 22 has a size that covers a part of the lamination surface 20, but may have a size that covers the entire lamination surface 20.

Also, the laminated surface 2 of the unit cell 10 of the first embodiment
Although one resin plate 22 is fixed to 0, a plurality of resin plates 22 may be fixed.

Although the casing 12 of the above-described unit cell 10 has the same potential as the electrolytic solution, the casing 12 is brought into contact with the negative electrode plate 26 or the positive electrode plate 28 so that the casing 12 May have the potential of the negative electrode plate 26 or the positive electrode plate 28.

Further, in the above-described second embodiment, the ridge 58 having a triangular horizontal section is formed as the protrusion.
The horizontal cross-sectional shape of the ridge 58 may be another shape such as a rectangle. Further, the ridge 58 is formed in a direction parallel to the height direction of the unit cell 50, but may be formed in another direction. Further, the number of the ridges 58 may not be three. Further, in the second embodiment, the stripe-shaped projections 58 are formed as projections, but the projections may not be stripes. For example, the projections may have the same shape as the resin plate 22 of the first embodiment. What is included may be formed as a part of the housing 52.

In the above-described second embodiment, the projections 58 functioning as projections are formed by making a part of the housing 52 thick, but the thickness of the housing is constant. As it is, the projection may be formed by deforming a part thereof by press working or the like.

Although the above-described unit cells 10 and 50 are of a spiral type, the unit cells may be of a type in which a flat positive plate and a negative plate are stacked.

The unit cells 10 and 50 are lithium-ion secondary batteries, but may be other types of secondary batteries such as nickel-metal hydride secondary batteries.

Although the embodiment of the present invention has been described in detail with reference to the drawings, this is merely an embodiment,
The present invention can be carried out in various modified and improved modes based on the knowledge of those skilled in the art.

[Brief description of the drawings]

FIG. 1 is a perspective view of a unit cell used for an assembled battery of the present invention.

FIG. 2 is a plan view of the unit cell with an insulating plate and an upper wall (not shown) of a housing removed.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is an exploded perspective view of the battery pack.

FIG. 5 is a plan view of the battery pack of FIG. 4;

FIG. 6 is a diagram showing a unit cell used for a battery pack different from the embodiment in FIG. 1;

[Explanation of symbols]

 10: Single battery 20: Laminated surface 22: Resin plate (insulating part) 34: Battery assembly 54: Insulating film 56: Laminated surface 58: Ridge (protrusion)

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takehito Yoda 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Corporation F-term (reference) 5H040 AA28 AS07 AT02 CC20

Claims (3)

[Claims]
1. An assembled battery formed by stacking a plurality of unit cells, wherein a housing of the unit cell is electrically connected to an electrode or an electrolytic solution in the housing, and is provided on a stacking surface of the unit cells. An assembled battery, wherein an insulating portion is integrally formed.
2. The assembled battery according to claim 1, wherein a gap through which air flows is formed between the stacked surfaces of the unit cells adjacent to each other by the insulating portion.
3. The housing has an insulating film formed on the lamination surface, and a protrusion protruding in the laminating direction is formed on the lamination surface of the housing, and the protrusion is the insulating portion. The battery pack according to claim 1, wherein:
JP2001040986A 2001-02-16 2001-02-16 Battery pack Pending JP2002245992A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001040986A JP2002245992A (en) 2001-02-16 2001-02-16 Battery pack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001040986A JP2002245992A (en) 2001-02-16 2001-02-16 Battery pack

Publications (1)

Publication Number Publication Date
JP2002245992A true JP2002245992A (en) 2002-08-30

Family

ID=18903490

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001040986A Pending JP2002245992A (en) 2001-02-16 2001-02-16 Battery pack

Country Status (1)

Country Link
JP (1) JP2002245992A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100590044B1 (en) 2004-12-02 2006-06-14 삼성에스디아이 주식회사 Secondary battery module
JP2008300288A (en) * 2007-06-01 2008-12-11 Sanyo Electric Co Ltd Battery pack
JP2010097865A (en) * 2008-10-17 2010-04-30 Gs Yuasa Corporation Battery device, and manufacturing method thereof
WO2010140584A1 (en) * 2009-06-01 2010-12-09 株式会社Gsユアサ Battery and method for manufacturing battery
KR20120022922A (en) 2009-05-14 2012-03-12 가부시키가이샤 지에스 유아사 Battery assembly
KR101240702B1 (en) * 2011-02-18 2013-03-11 로베르트 보쉬 게엠베하 Battery module providing improved barrier
JP2013187093A (en) * 2012-03-09 2013-09-19 Kojima Press Industry Co Ltd Insulation structure between battery cases
JP2013187101A (en) * 2012-03-09 2013-09-19 Kojima Press Industry Co Ltd Refrigerant passage formation structure between battery cases
WO2015001711A1 (en) * 2013-07-01 2015-01-08 三洋電機株式会社 Power source device
JPWO2013136478A1 (en) * 2012-03-15 2015-08-03 日立オートモティブシステムズ株式会社 Square rechargeable battery module
US9312560B2 (en) 2011-12-27 2016-04-12 Toyota Jidosha Kabushiki Kaisha Secondary battery assembly

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JPH08167404A (en) * 1994-12-15 1996-06-25 Nissan Motor Co Ltd Battery structure of electric vehicle
JPH09120808A (en) * 1995-10-24 1997-05-06 Matsushita Electric Ind Co Ltd Laminated and sealed alkaline storage battery
JP2000182582A (en) * 1998-12-11 2000-06-30 Sanyo Electric Co Ltd Battery pack

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08167404A (en) * 1994-12-15 1996-06-25 Nissan Motor Co Ltd Battery structure of electric vehicle
JPH09120808A (en) * 1995-10-24 1997-05-06 Matsushita Electric Ind Co Ltd Laminated and sealed alkaline storage battery
JP2000182582A (en) * 1998-12-11 2000-06-30 Sanyo Electric Co Ltd Battery pack

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100590044B1 (en) 2004-12-02 2006-06-14 삼성에스디아이 주식회사 Secondary battery module
JP2008300288A (en) * 2007-06-01 2008-12-11 Sanyo Electric Co Ltd Battery pack
JP2010097865A (en) * 2008-10-17 2010-04-30 Gs Yuasa Corporation Battery device, and manufacturing method thereof
CN104505476A (en) * 2009-05-14 2015-04-08 株式会社杰士汤浅国际 Battery Assembly
KR20120022922A (en) 2009-05-14 2012-03-12 가부시키가이샤 지에스 유아사 Battery assembly
EP2432044A1 (en) * 2009-05-14 2012-03-21 GS Yuasa International Ltd. Battery assembly
CN102422458A (en) * 2009-05-14 2012-04-18 株式会社杰士汤浅国际 Battery assembly
TWI476980B (en) * 2009-05-14 2015-03-11 Gs Yuasa Int Ltd Combination battery
EP2432044A4 (en) * 2009-05-14 2013-10-23 Gs Yuasa Int Ltd Battery assembly
US9929386B2 (en) 2009-05-14 2018-03-27 Gs Yuasa International Ltd. Battery assembly
WO2010140584A1 (en) * 2009-06-01 2010-12-09 株式会社Gsユアサ Battery and method for manufacturing battery
US9023507B2 (en) 2009-06-01 2015-05-05 Gs Yuasa International, Ltd. Battery assembly and method of manufacturing the same
JP5601592B2 (en) * 2009-06-01 2014-10-08 株式会社Gsユアサ Assembled battery and method of manufacturing the assembled battery
KR101240702B1 (en) * 2011-02-18 2013-03-11 로베르트 보쉬 게엠베하 Battery module providing improved barrier
US8956752B2 (en) 2011-02-18 2015-02-17 Samsung Sdi Co., Ltd. Battery module
US9312560B2 (en) 2011-12-27 2016-04-12 Toyota Jidosha Kabushiki Kaisha Secondary battery assembly
JP2013187101A (en) * 2012-03-09 2013-09-19 Kojima Press Industry Co Ltd Refrigerant passage formation structure between battery cases
JP2013187093A (en) * 2012-03-09 2013-09-19 Kojima Press Industry Co Ltd Insulation structure between battery cases
JPWO2013136478A1 (en) * 2012-03-15 2015-08-03 日立オートモティブシステムズ株式会社 Square rechargeable battery module
WO2015001711A1 (en) * 2013-07-01 2015-01-08 三洋電機株式会社 Power source device

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