JP4404982B2 - Collective sealed secondary battery - Google Patents

Collective sealed secondary battery Download PDF

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Publication number
JP4404982B2
JP4404982B2 JP05561199A JP5561199A JP4404982B2 JP 4404982 B2 JP4404982 B2 JP 4404982B2 JP 05561199 A JP05561199 A JP 05561199A JP 5561199 A JP5561199 A JP 5561199A JP 4404982 B2 JP4404982 B2 JP 4404982B2
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JP
Japan
Prior art keywords
cooling medium
secondary battery
unit cell
sealed secondary
collective
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.)
Expired - Fee Related
Application number
JP05561199A
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Japanese (ja)
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JP2000251950A (en
Inventor
真治 浜田
真一 湯浅
真介 福田
貢 高木
Original Assignee
トヨタ自動車株式会社
パナソニック株式会社
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 トヨタ自動車株式会社, パナソニック株式会社 filed Critical トヨタ自動車株式会社
Priority to JP05561199A priority Critical patent/JP4404982B2/en
Priority claimed from EP00301599.7A external-priority patent/EP1033771B1/en
Publication of JP2000251950A publication Critical patent/JP2000251950A/en
Application granted granted Critical
Publication of JP4404982B2 publication Critical patent/JP4404982B2/en
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    • 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

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a collective sealed secondary battery in which a plurality of single cells are arranged in series to form an integrated battery case.
[0002]
[Prior art]
As this type of collective sealed secondary battery, a battery disclosed in Japanese Patent Laid-Open No. 7-85847 is known. As shown in FIG. 11, the collective sealed secondary battery 61 houses a power generation element in a battery case 63 formed in a bottomed rectangular cylindrical shape, and the opening of the battery case 63 is sealed with a lid 64. A plurality of the unit cells 62 are arranged in series, and the battery case 63 of the unit cells 62 is connected in a tightened state by the end plate 65 and the restraining band 66, and the positive terminal 67 and the negative terminal 68 of each unit cell 62 are connected. And the terminals 67 and 68 are sequentially connected in series by an electric connection bar 69.
[0003]
Japanese Patent Laid-Open No. 6-215804 discloses a monoblock storage battery in which a plastic battery case and a lid are heat-welded, and indented spaces are formed on the outer surfaces of two opposite side walls of the battery case, respectively. A side plate is thermally welded to form a cooling jacket portion between the side wall and the side plate of the battery case, and an inlet orifice and an outlet orifice for the cooling liquid are provided at the upper portions of both end portions of the side plate.
[0004]
Japanese Patent Application Laid-Open No. 61-45571 provides a cooling passage penetrating vertically in a partition between cells of a monoblock battery case, and a header for inflow / discharge of a cooling medium above and below the cooling passage. The thing which provided the cover body isolate | separated by this is disclosed.
[0005]
[Problems to be solved by the invention]
However, in the collective sealed secondary battery disclosed in Japanese Patent Application Laid-Open No. 7-85847, each single battery is closely arranged and tightened. Therefore, when the ambient temperature is high or when charging / discharging with a large current, Is not sufficiently dissipated, and there is a problem that the battery temperature rises and the battery life decreases.
[0006]
On the other hand, in the storage battery disclosed in Japanese Patent Laid-Open No. 6-215804, since both side surfaces of the battery case are cooled by the water cooling jacket portion, the temperature rise can be suppressed to some extent. In the secondary battery, there is a problem that the rise in the temperature of the single cells cannot be sufficiently suppressed because the space between the single cells cannot be cooled.
[0007]
On the other hand, in the storage battery disclosed in Japanese Patent Application Laid-Open No. 61-45571, the upper and lower cooling passages in the partition between the cells in the monoblock battery case are forcibly cooled, but the entire outer surface of each cell is forcibly cooled. Because it is not a thing, the cooling effect is not enough, and the structure of the battery case is complicated, so the manufacturing cost is high, and it is necessary to provide a lid for each cell, which increases the number of assembly steps and increases the cost. There are problems such as.
[0008]
In view of the above-described conventional problems, an object of the present invention is to provide a collective sealed secondary battery that can effectively cool each single battery with an inexpensive configuration.
[0009]
[Means for Solving the Problems]
The collective sealed secondary battery of the present invention is a collective sealed secondary battery in which a plurality of single cells formed by housing a power generation element in a bottomed rectangular cylindrical battery case and sealing the opening are arranged in series. The cooling medium passages are formed by communicating them between the battery case of each unit cell and both sides of the unit cell with respect to the arrangement direction of the unit cells, and between the unit cells by the cooling medium passing through these cooling medium passages. Since all the side surfaces of the unit cell including can be forcibly cooled by the cooling medium, all the unit cells can be effectively cooled.
[0010]
Further, if the cooling medium passage is provided also outside the unit cells at both ends of the collective sealed secondary battery, the outer surfaces of the unit cells at both ends can be forcibly cooled.
[0011]
In addition, when the cooling jacket member is joined to both sides of the collective sealed secondary battery unit cell and / or both ends of the unit cell arrangement direction, the cooling medium passage is formed by a compact cooling jacket member. It can be configured easily and lightweight.
[0012]
In addition, when a protruding portion is provided on at least one of the opposing wall surfaces of each battery cell facing each other and a cooling medium passage is formed between the opposing wall surfaces, the protruding portion is provided on the opposite wall surface of each cell battery case. By merely forming the cooling medium passage, it is possible to easily and inexpensively form a cooling medium passage over substantially the entire surface between the opposing wall surfaces of the unit cell.
[0013]
In addition, if the cooling medium passage is provided with rectifying ridges so that the cooling medium flows through the entire surface of the cooling medium passage on both sides of the unit cell arrangement direction, the entire cooling medium can be reliably and evenly cooled, and high cooling performance Can be secured.
[0014]
Further, when the unit cells are integrally joined to each other and the opening is sealed with an integrated lid, a collective sealed secondary battery having an integrated battery case can be obtained with a small number of parts and assembly man-hours. .
[0015]
In addition, when the battery case and lid of the unit cell, or the battery case, lid and cooling jacket member of the unit cell are made of synthetic resin and joined together by welding, the unit cell An assembled battery can be easily obtained as an integrated battery case.
[0016]
In addition, an inlet orifice and an outlet orifice of the cooling medium to be supplied to and discharged from the cooling medium passages on both sides in the unit cell arrangement direction are arranged at both ends in the unit cell arrangement direction, and the cooling medium on both sides is provided via the distribution header. When connected to the passage, the cooling medium can be supplied and discharged from a single inlet orifice and outlet orifice, and the piping for cooling the secondary battery can be simplified.
[0017]
In addition, if a cooling medium passage is formed between the two battery cells, the cross-sectional area of one cooling medium passage can be increased with the same overall length, and the pressure loss in the cooling medium passage can be reduced. Can do.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the collective sealed secondary battery of the present invention will be described with reference to FIGS.
[0019]
The collective sealed secondary battery 1 of the present embodiment is a nickel-hydrogen secondary battery that can be suitably used as a drive power source for an electric vehicle. As shown in FIGS. They are arranged in series and joined together to form an integrated battery case, end plates 6 are joined to both ends of the unit cell row, and flat spaces are formed on both sides of the unit cells 2 and end plates 6 with respect to the arrangement direction. A plate-shaped cooling jacket member 3 formed in a recess is joined, a single lid body 5 is joined thereon, each cell 2 and the end plate 6 are sealed, and a restraint band 7 is provided between the end plates 6 and 6. The structure is tightened. Reference numeral 8 denotes a terminal mounting hole formed in the lid body 5 so that a positive electrode terminal or a negative electrode terminal protruding upward from the unit cell 2 at one end and the other end penetrates, and 9 denotes a lid body 5 corresponding to each unit cell 2. It is a safety valve mounting hole formed in the through hole. Reference numerals 10 and 11 denote an inlet orifice and an outlet orifice for the cooling medium, which are integrally attached to both ends of the lid 5. The unit cell 2, the cooling jacket member 3, the lid 5, the end plate 6, the inlet orifice 10, the outlet orifice 11 and the like are made of synthetic resin such as PP / PPE alloy and are integrally joined to each other by welding. . Moreover, the adjacent unit cells 2 and 2 are electrically connected by the connection body 12, as shown in FIG. 2, FIG.
[0020]
Hereinafter, in detail, as shown in FIGS. 2 and 3, the unit cell 2 is configured by housing a power generation element 15 in a bottomed rectangular cylindrical battery case 14, and arranging the unit cells 2 in series. In this state, a large number of protrusions 17 that are in contact with each other are formed in a matrix on the opposing wall surface 16 of the battery case 14 facing each other, and a space formed between the opposing wall surfaces 16 and 16 by these protrusions 17. A cooling medium passage 18 is formed by the above. An end plate 6 is applied to and joined to the opposing wall surface 16 outside the unit cells 2 at both ends of the unit cell array, and a cooling medium passage 18 is also formed between the end plate 6 and the opposing wall surface 16. Yes. The end plate 6 may be constituted by a cooling jacket member. In addition, a plurality of (17 in the illustrated example) projections 17 at appropriate locations are formed with a large diameter, and engagement projections 19a and engagement recesses 19b that are fitted and engaged with each other are formed on the end surfaces of the projections 17 to each other. Positioning has been made. Further, a joining edge portion 20 that protrudes from the upper end of the battery case 14 at an appropriate distance below and the lower end edge protrudes from each other. Then, the unit cells 2 are integrally joined as an integrated battery case by welding the protrusions 17 and the joining edge portions 20 that are in contact with each other in a state where the unit cells 2 are arranged in series.
[0021]
The cooling medium passages 21 on both sides are formed in a space formed between the unit cells 2 and the inner side surface of the cooling jacket member 3 on both sides of the unit cells 2 in the arrangement direction. Further, a distribution header forming rod 22 for distributing the cooling medium (water) is formed on the upper edge of the end plate 6 so as to communicate with the cooling medium passages 21 on both sides.
[0022]
As shown in FIGS. 2, 3, and 4, adjacent unit cells 2 are electrically connected to the upper frame 26 above the joint edge 20 above the battery case 14 of each unit cell 2 that is an integrated battery case. The substantially triangular cutouts 13 for arranging the connection bodies 12 to be connected to each other are formed in a staggered manner, and the connection bodies 12 are integrally joined to the battery case 14 and the lid body 5 in a sealed state while being arranged in the cutouts 13. Has been.
[0023]
As shown in FIGS. 2, 3, and 5, the connection body 12 includes a connection shaft 27 made of metal (such as nickel) and a support body 28 made of synthetic resin, and the connection shaft 27 holds the support body 28. The tube portion 29 is penetrated in a press-fit state, and is completely sealed by an O-ring 31 interposed between the flange portion 27a of the connection shaft 27 and the inner periphery of the holding tube portion 29. Further, a pair of triangular wing portions 30 project from the holding cylinder portion 29 on the support body 28 and are configured to be joined to the individual frames 26 when the connecting body 12 is disposed in the notch 13. .
[0024]
As shown in FIGS. 2, 3, and 6, the cover 5 has an individual frame 32 formed on the inner surface so as to correspond to the upper frame 26 of each battery case 14, and an inverted L-shaped cross section on the outer periphery. The outer peripheral frame 33 hangs down, and sealing ridges 34 are formed on both ends in the longitudinal direction, which are joined to the upper end of the distribution header forming rod 22 to form the distribution header 35 in a sealed manner.
[0025]
In addition, a terminal mounting hole 8 is formed on one side of both ends of the lid 5, and a joining protrusion 36 that joins the inlet orifice 10 and the outlet orifice 11 is provided on the other side. These orifices 10 and 11 are configured by projecting a connection port 38 from the tip of the short side of the J-shaped box piece 37 whose plane shape is substantially J-shaped and whose lower surface is open. In addition, a communication opening 39 that communicates with the distribution header 35 is formed at a portion of the lid 5 that faces the front end of the long side of the J-shaped box piece 37.
[0026]
Further, as shown in FIG. 7A, the inner surface of the cooling jacket member 3 forms a meandering flow passage 40 that meanders up and down so that the cooling medium flows evenly over the entire surface of the cooling medium passage 21. A ridge 41 is provided. Instead of the straightening ridges 41, as shown in FIG. 7 (b), a plurality of horizontal straightening ridges 42 that are short in the upper part and long in the lower part may be provided at appropriate intervals in the vertical direction. As shown in FIG. 7C, these straightening ridges 41 and 42 are not necessarily provided, but in this case, a cooling medium staying area 43 is generated at both lower portions of the cooling medium passage 21 and the arrangement direction Since there is a possibility that the lower part of the unit cell 2 at both ends is not sufficiently cooled, it is desirable to provide the straightening ridges 41 and 42. In addition, you may provide these rectification protrusions 41 and 42 in the battery case 14 side of the cell 2. As shown in FIG.
[0027]
In the collective sealed secondary battery 1 having the above configuration, when the cooling medium is supplied from the inlet orifice 10, it flows into the cooling medium passages 21 on both sides through the distribution header 35, and the inside of the cooling medium passage 21 is set downstream. And flows between the cooling medium passages 21 and 21 on both sides through the cooling medium passage 18 between the unit cells 2, and all the sides including the opposing wall surface 16 of the battery case 14 of the unit cell 2 are the cooling medium. And the cooling medium is then discharged from the outlet orifice 11. Therefore, the four side surfaces of all the unit cells 2 are effectively cooled by the cooling medium.
[0028]
In addition, since the unit cells 2 are welded and integrally joined to each other to form an integrated battery case, and the integrated lid 5 is welded and sealed to the opening, the number of parts and assembly man-hours are reduced. The integrated sealed secondary battery 1 can be obtained as an integrated battery case, and the protrusions 17 are formed on the opposing wall surface 16 of the battery case 14 of each unit cell 2 so that the protrusions 17 are brought into contact with each other. Since it is welded, the cooling medium passage 18 over the substantially entire surface between the opposing wall surfaces 16 and 16 can be formed easily and inexpensively.
[0029]
Moreover, since the compact cooling plate member 3 is joined to the both sides of the unit cell row to form the cooling medium passages 21 on both sides, the weight can be reduced.
[0030]
In addition, an inlet orifice 10 and an outlet orifice 11 of the cooling medium that supplies and discharges the cooling medium to and from the cooling medium passages 21 on both sides are arranged at both ends in the unit cell arrangement direction, and the cooling medium on both sides via the distribution header 35. Since it is connected to the passage 21, it is possible to effectively cool the entire circumference of all the unit cells 2 in combination with the above configuration in a single cooling medium path.
[0031]
In the above description of the embodiment, as shown in FIG. 8A, the example in which the cooling medium passage 18 is disposed between the unit cells 2 and 2 is shown, but as shown in FIG. 8B. In addition, the cooling medium passage 18 may be formed between the two single cells 2 so that the total length L of the secondary battery 1 remains the same, and the width of the cooling medium passage 18 is changed from t to t. Since the flow passage cross-sectional area can be increased, the pressure loss in the cooling medium passage 18 can be reduced.
[0032]
In the above description of the embodiment, the example in which the inlet orifice 10 and the outlet orifice 11 are arranged on one side in the direction orthogonal to the arrangement direction of the unit cells 2 is shown. However, as shown in FIG. Orifice 10 and outlet orifice 11 may be arranged at diagonal positions so that the cooling medium flows through cooling medium passage 18 between cells 2 and 2. In the example of FIG. 9A, a meandering passage is formed by the cooling medium passage 21 on both sides and the cooling medium passage 18 between the cells. Further, in the example of FIG. 9B, the inlet orifice 10 is provided at one end of the cooling medium passage 21 on one side, and the outlet orifice 11 is provided at the other end of the cooling medium passage 21 on the other side. I try to flow.
[0033]
In the above embodiment, the lid 5 is covered on the end plate 6 and the inlet orifice 10 and the outlet orifice 11 are provided on the lid 5. However, as shown in FIG. Covering only the battery 2 group, the distribution header portion 52 is integrally provided at the upper end portions of the end plates 6 at both ends, the inlet orifice 10 and the outlet orifice 11 are provided on the upper surface thereof, and the upper ends at both ends of the cooling jacket member 3. A connecting portion 53 that connects the internal cooling medium passage 21 to both ends of the distribution header portion 52 may be bent. In FIG. 10, the hatched portions are the assembly of the unit cells 2 and the welded portion 54 of the cooling jacket member 3.
[0034]
Also in this embodiment, the same operation effect as the above embodiment can be basically obtained.
[0035]
Moreover, although the example which integrally bonds each structural member by welding was shown in the said embodiment, you may integrally bond with an adhesive material.
[0036]
【The invention's effect】
According to the collective sealed secondary battery of the present invention, as is apparent from the above description, the cooling medium passage is communicated between the battery case of each unit cell and both sides thereof with respect to the arrangement direction of the unit cell. Since all the sides of the unit cell including the unit cells can be forcibly cooled by the cooling medium with the cooling medium passing through these cooling medium passages, all the unit cells can be effectively cooled. Can do.
[0037]
Further, if the cooling medium passage is provided also outside the unit cells at both ends of the collective sealed secondary battery, the outer surfaces of the unit cells at both ends can be forcibly cooled.
[0038]
In addition, when the cooling jacket member is joined to both sides of the collective sealed secondary battery unit cell and / or both ends of the unit cell arrangement direction, the cooling medium passage can be easily formed by the cooling jacket member. It can be made lightweight.
[0039]
In addition, when a protrusion is provided on at least one of the opposite wall surfaces of each battery cell and a cooling medium passage is formed between both wall surfaces, the protrusion is provided on the opposite wall surface of each battery cell. By merely forming the cooling medium passage, it is possible to easily and inexpensively form a cooling medium passage over substantially the entire surface between the opposing wall surfaces of the unit cell.
[0040]
Further, if the rectifying protrusions are provided in the cooling medium passage so that the cooling medium flows through the entire surfaces of the cooling medium passages on both sides, the whole can be reliably and evenly cooled, and high cooling performance can be secured. .
[0041]
Further, when the unit cells are integrally joined to each other and the opening is sealed with an integrated lid, a collective sealed secondary battery having an integrated battery case can be obtained with a small number of parts and assembly man-hours. .
[0042]
In addition, when the battery case and the lid of the unit cell, or the battery case, the lid and the cooling jacket member of the unit cell are made of synthetic resin and alternately joined by welding, the unit cell is An assembled battery can be easily obtained as an integrated battery case.
[0043]
In addition, when an inlet orifice and an outlet orifice of a cooling medium that supplies and discharges the cooling medium to and from the cooling medium passages on both sides are arranged at both ends in the unit cell arrangement direction, and connected to the cooling medium passages on both sides through a distribution header. The cooling medium can be supplied and discharged from a single inlet orifice and outlet orifice, and the cooling pipe for the secondary battery can be simplified.
[0044]
In addition, if a cooling medium passage is formed between the two battery cells, the cross-sectional area of one cooling medium passage can be increased with the same overall length, and the pressure loss in the cooling medium passage can be reduced. Can do.
[Brief description of the drawings]
FIG. 1 is an external perspective view of an embodiment of a collective sealed secondary battery of the present invention.
FIG. 2 is a longitudinal side view of the embodiment.
FIG. 3 is a partially longitudinal front view of the same embodiment;
FIG. 4 is a partial perspective view of the intermediate lid of the same embodiment.
FIG. 5 is a perspective view of the electrical connection body of the embodiment.
FIG. 6 is a perspective view of the lid according to the embodiment.
FIG. 7 is a longitudinal sectional view showing various configuration examples in the cooling medium passages on both sides of the same embodiment;
FIG. 8 is a schematic cross-sectional plan view showing an arrangement state of a cooling medium passage and a modification example thereof in the same embodiment.
FIG. 9 is a schematic cross-sectional plan view of a flow path configuration example for forming a flow of another cooling medium in the same embodiment.
FIG. 10 is an exploded perspective view of another embodiment of the collective sealed secondary battery of the present invention.
FIG. 11 is a front view of a collective sealed secondary battery of a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Collective type sealed secondary battery 2 Single cell 3 Cooling jacket member 5 Lid 10 Inlet orifice 11 Outlet orifice 14 Battery case 15 Power generation element 16 Opposing wall surface 17 Projection 18 Cooling medium passage 21 Cooling medium passage 35 on both sides Distribution header 41 Rectification Ridge 42 straightening ridge

Claims (8)

  1. In a collective hermetic secondary battery in which a plurality of single cells, each of which has a power generation element housed in a bottomed rectangular cylindrical battery case and whose opening is sealed, are arranged in series, the cooling medium passage is connected to the electric power of each single battery. These are formed by communicating between the tanks and both sides of the cell arrangement direction, and the cooling jacket member is joined to both sides of the cell arrangement direction and / or both ends of the cell arrangement direction. A protrusion projecting on at least one of the opposing wall surfaces of the battery case of each unit cell, forming a cooling medium passage between the opposing wall surfaces, and contacting each other among the unit cells among the protrusions. A collective sealed secondary battery in which the protruding parts are welded to each other and each unit cell is integrally joined as an integral battery case.
  2.  2. The collective sealed secondary battery according to claim 1, wherein the cooling medium passage is also provided outside the unit cells at both ends of the collective sealed secondary battery.
  3. 2. The collective sealed secondary battery according to claim 1, wherein a rectifying ridge is provided in the cooling medium passage so that the cooling medium flows through the entire surface of the cooling medium passage on both sides in the unit cell arrangement direction.
  4. The collective sealed secondary battery according to any one of claims 1 to 3 , wherein the single cells are integrally joined to each other and the opening is sealed with an integral lid.
  5. 5. The collective sealed secondary battery according to claim 4, wherein the battery case and the lid of the unit cell are made of synthetic resin and are joined together by welding.
  6. 5. The collective sealed secondary battery according to claim 4 , wherein the battery case, the lid and the cooling jacket member of the unit cell are made of synthetic resin and are joined together by welding.
  7. The inlet and outlet orifices of the cooling medium to be supplied to and discharged from the cooling medium passages on both sides of the unit cell arrangement direction are arranged at both ends in the unit cell arrangement direction, and to the cooling medium passages on both sides through the distribution header. 3. The collective sealed secondary battery according to claim 1, wherein the assembled sealed secondary battery is connected.
  8. Aggregate type sealed battery according to claim 1 or 2, characterized in that the formation of the cooling medium passage therebetween for each battery jar of two unit cells.
JP05561199A 1999-03-03 1999-03-03 Collective sealed secondary battery Expired - Fee Related JP4404982B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP05561199A JP4404982B2 (en) 1999-03-03 1999-03-03 Collective sealed secondary battery

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP05561199A JP4404982B2 (en) 1999-03-03 1999-03-03 Collective sealed secondary battery
EP00301599.7A EP1033771B1 (en) 1999-03-03 2000-02-29 Integrated sealed secondary battery
US09/516,558 US6444353B1 (en) 1999-03-03 2000-02-29 Integrated sealed secondary battery

Publications (2)

Publication Number Publication Date
JP2000251950A JP2000251950A (en) 2000-09-14
JP4404982B2 true JP4404982B2 (en) 2010-01-27

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7138205B2 (en) 2001-10-02 2006-11-21 Matsushita Electric Industrial Co., Ltd. Battery with proportional collectors, straps, and plates
EP2067206B1 (en) * 2006-09-18 2012-11-07 Magna E-Car Systems GmbH & Co OG Modular battery unit
US8974943B2 (en) * 2011-01-24 2015-03-10 Guoan Feng Power battery pack cooling apparatus
JP5793969B2 (en) * 2011-05-31 2015-10-14 トヨタ自動車株式会社 Laminated battery
JP5692045B2 (en) * 2011-12-21 2015-04-01 株式会社豊田自動織機 Module and vehicle

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