WO2014125807A1 - 電池モジュール - Google Patents
電池モジュール Download PDFInfo
- Publication number
- WO2014125807A1 WO2014125807A1 PCT/JP2014/000690 JP2014000690W WO2014125807A1 WO 2014125807 A1 WO2014125807 A1 WO 2014125807A1 JP 2014000690 W JP2014000690 W JP 2014000690W WO 2014125807 A1 WO2014125807 A1 WO 2014125807A1
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- WO
- WIPO (PCT)
- Prior art keywords
- battery
- blocks
- electrode side
- guide groove
- positive electrode
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/308—Detachable arrangements, e.g. detachable vent plugs or plug systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/317—Re-sealable arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/271—Lids or covers for the racks or secondary casings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/20—Pressure-sensitive devices
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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
- Y02E60/10—Energy storage using batteries
Definitions
- the present invention relates to a battery module in which a plurality of battery blocks are arranged side by side.
- a battery block configured by connecting a plurality of batteries
- a battery module configured by connecting a plurality of battery blocks
- Patent Document 1 discloses a vertical cross section of two round holes facing diagonally out of round holes at four corners of a casing member for storing a battery in order to stack a plurality of stages facing a wide surface of a flat battery cell.
- a structure is described in which the shape is H-shaped and the female screw is not cut, the vertical cross-sectional shape of the remaining two round holes is rectangular, and the female screw is cut.
- the casing member is turned upside down so that the round hole with the H-shaped cross section and the round hole with the rectangular cross section face each other, and bolts are passed through the round holes to sequentially fix the steps.
- Patent Document 2 as a battery box of an assembled battery, a plurality of batteries are horizontally arranged between a base plate and a cover plate. It is disclosed that a plurality of batteries are sandwiched between a pair of sandwiching bars arranged in parallel to a base plate.
- a battery module it is desirable to connect and arrange a plurality of battery blocks with a simple structure. It is also desirable to fix a plurality of battery blocks with a simple structure.
- a battery module is a battery module including a plurality of battery blocks and a connecting member that connects the plurality of battery blocks in a predetermined arrangement direction, and the battery block is in the longitudinal direction.
- a plurality of batteries arranged, a battery case for arranging and storing a plurality of batteries, an insulating lid disposed at a positive electrode side end or a negative electrode side end of the battery in the battery case, and an insulating lid, And at least one set of guide groove portions extending in a direction parallel to each other, wherein at least one set of slide portions provided on the connecting member is fitted, and the plurality of battery blocks are extended in the respective guide groove portions.
- the sliding portions of the connecting members are fitted over the respective guide groove portions of the plurality of battery blocks and connected to each other.
- a plurality of batteries having a cylindrical outer shape are arranged while aligning the longitudinal direction of the plurality of batteries, and the both ends of the row arrangement direction of the plurality of batteries are arranged in the longitudinal direction of the batteries.
- a plurality of lid members respectively disposed at both ends of each battery block along the arrangement direction of the blocks, and a fixing member for fixing the plurality of battery blocks via the plurality of lid members, ,
- the positions of the through portions are arranged so as to be in a straight line along the arrangement direction of the battery blocks, and the fixing member is arranged along each of the through portions of the plurality of battery blocks. It is.
- a plurality of battery blocks in a battery module, can be connected and arranged with a simple structure.
- a plurality of battery blocks can be fixed with a simple structure.
- FIG. 6 is a cross-sectional view of another configuration example of the battery module cut along a plane perpendicular to the X direction in the example of the first embodiment according to the present invention, similarly to FIG. 2.
- FIG. 4 is a cross-sectional view taken along a plane perpendicular to the X direction, similarly to FIGS. 2 and 3, for another configuration example of the battery module in the example of the first embodiment according to the present invention.
- FIG. 1 It is a perspective view which shows the battery module in an example of 2nd Embodiment based on this invention.
- (A) shows a battery module and
- (b) shows a battery block. It is sectional drawing seen from the A direction of Fig.1 (a). It is a figure which shows the fixing member in an example of 2nd Embodiment based on this invention. It is a figure which shows the other structure of the fixing member in an example of 2nd Embodiment based on this invention.
- FIG. 1 is a perspective view showing a battery module 1 according to the first embodiment, a battery block 2 and a connecting member 3 constituting the battery module 1, and a battery assembly 4 constituting the battery block 2.
- 1A shows the battery module 1
- FIG. 1B shows one battery block 2
- FIG. 1C shows the battery assembly 4
- FIG. 1D shows the connecting member 3.
- the battery module 1 includes a plurality of battery blocks 2 and a connecting member 3.
- two battery blocks 2 and one connecting member 3 are shown.
- Each battery block 2 includes a battery assembly 4, and a plurality of batteries 5 are arranged in the battery assembly 4. Below, each structure is demonstrated in order of the battery 5, the battery assembly 4, the battery block 2, the connection member 3, and the battery module 1.
- FIG. 1 is a perspective view showing a battery module 1 according to the first embodiment, a battery block 2 and a connecting member 3 constituting the battery module 1, and a battery assembly 4 constituting the battery block 2.
- 1A shows the battery module 1
- FIG. 1B shows one battery block 2
- FIG. 1 shows the X, Y, and Z directions orthogonal to each other.
- the direction in which the battery block 2 is disposed and the direction in which the connecting member 3 extends is the X direction.
- the Y direction is the longitudinal direction of the batteries 5 when the plurality of batteries 5 are aligned in the longitudinal direction in the battery assembly 4.
- the Z direction is a direction perpendicular to the X direction and also perpendicular to the Y direction, and corresponds to the height direction of the connecting member 3.
- the XZ plane is an alignment plane of the plurality of batteries 5, and the X direction is one direction in which the alignment plane extends when the multiple alignment planes are aligned with one plane.
- the direction in which the number of the batteries 5 is arranged on the aligned arrangement surface is the X direction in which the connecting member 3 extends.
- the direction in which the number of the batteries 5 is arranged in the arranged arrangement surface is the direction in which the connecting member 3 extends. Also good.
- the battery assembly 4 is a battery case 6 in which a plurality of batteries 5 are arranged and arranged.
- 20 batteries 5 are stored in one battery case 6.
- the battery 5 is a chargeable / dischargeable secondary battery.
- a lithium ion battery is used as the secondary battery.
- a nickel metal hydride battery, an alkaline battery, or the like may be used.
- the 20 batteries 5 are in a staggered arrangement relationship that minimizes the gap between the adjacent batteries 5.
- the batteries 5 are arranged in a plurality of rows and a plurality of columns with the longitudinal direction aligned. If the direction in which the number of batteries to be arranged is the column direction, in FIG. 1C, the direction in which the six or seven batteries 5 are arranged is the column direction, and the direction in which the three batteries 5 are arranged is the row direction. It is an arrangement direction.
- the column direction is a direction parallel to the X direction
- the row direction is a direction parallel to the Z direction.
- the battery 5 has a cylindrical outer shape.
- An example of the cylindrical battery 5 is a lithium ion battery having a diameter of 18 mm, a height of 65 mm, a voltage between terminals of 3.6 V, and a capacity of 2.5 Ah. This is an illustrative example, and other dimensions and characteristic values may be used. Further, the outer diameter may not be cylindrical, and may be, for example, a square.
- the battery 5 has a safety valve 9.
- the safety valve 9 is a mechanism that releases the exhaust gas from the inside of the battery 5 to the outside when the pressure of the gas generated by the electrochemical reaction performed inside the battery 5 exceeds a predetermined threshold pressure.
- the safety valve 9 is provided on either side of both ends of the battery 5 in the longitudinal direction. In the example of FIG. 1, it is provided on the positive electrode terminal 7 side, but it may be provided on the negative electrode terminal 8 side. In the following, it is assumed that the safety valve 9 is provided on the positive electrode terminal 7 side. Therefore, the safety valve 9 side of the battery 5 is arranged on the positive side of the battery block 2, and the exhaust gas from the inside of the battery 5 is discharged from the gas discharge port of the safety valve 9 arranged on the positive side of the battery block 2. Become.
- the battery case 6 is a holding container that holds the 20 batteries 5 in a predetermined arrangement relationship and holds them as the battery assembly 4.
- the battery case 6 is a frame provided with 20 battery storage portions that are open at both ends in the height direction, and each battery 5 is stored and arranged in one of the battery storage portions.
- a battery case 6 made of aluminum and having a predetermined shape by extrusion molding can be used as the battery case 6, a battery case 6 made of aluminum and having a predetermined shape by extrusion molding can be used.
- the battery block 2 is formed by covering both ends of a battery case 6 in which 20 batteries 5 are accommodated with insulating lid portions 10 and 11.
- the lid 10 is a positive-side insulating lid disposed at the positive-side end of the battery 5 in the battery case 6, and a positive-electrode current collecting plate 12 that connects the positive terminals of the 20 batteries 5 in parallel is attached to the lid 10.
- the positive-side insulating lid performs insulation between each of the positive terminals 7 of the 20 batteries 5 and the positive current collector plate 12.
- the lid portion 11 is a negative electrode side insulating lid disposed at the negative electrode side end portion of the battery 5 in the battery case 6, and a negative electrode current collector plate 13 that connects the negative electrode terminals 8 of the 20 batteries 5 in parallel is attached (FIG. 2).
- the negative electrode side insulating lid performs insulation between each of the negative electrode terminals of the 20 batteries 5 and the negative electrode current collector plate 13.
- a plastic material having heat resistance and electrical insulation and molded into a predetermined shape can be used.
- the plastic material polyethylene terephthalate, polyimide, polysulfone, polyethersulfone, polyetherimide, polyphenylene sulfide, polyether ether ketone, polycarbonate, modified polyphenylene ether, polybutylene terephthalate, or the like can be used.
- the set of guide groove portions 14 and 15 provided in the battery block 2 are guide grooves for sliding the connecting member 3.
- the pair of guide groove portions 14 and 15 are provided integrally with the lid portion 10 which is a positive electrode side insulating lid.
- the pair of guide groove portions 14 and 15 are provided at both end portions along the Z direction of the lid portion 10 and extend in directions parallel to each other.
- the extending direction is the extending direction of the connecting member 3 and is the X direction.
- the groove openings of the pair of guide groove portions 14 and 15 are opposite to each other with respect to the Z direction.
- the groove opening of the guide groove 14 provided on the upper side in the Z direction of the lid 10 faces the upper side in the Z direction
- the groove opening of the guide groove 15 provided on the lower side of the lid 10 in the Z direction is the Z direction. Facing down.
- Such a set of guide groove portions 14 and 15 may be formed as a groove shape when the lid portion 10 is formed into a predetermined shape.
- a guide member having a groove shape may be prepared as a separate member, and the guide member may be integrated with the lid portion 10 by bonding or appropriate fixing means.
- the guide member having the guide groove portions 14 and 15 is used, the guide member is formed of the same insulating material as that of the lid portion 10.
- the connecting member 3 is a member that integrally connects the battery blocks 2 when they are arranged in the X direction.
- the connecting member 3 is slidably fitted into each of the set of guide groove portions 14 and 15 of the battery block 2 to connect the set of slide portions 16 and 17 and the set of slide portions 16 and 17 to each other.
- a cover portion 18 is provided.
- the cover portion 18 includes a ceiling wall portion extending in the Z direction and two side wall portions extending in the Y direction from both ends of the ceiling portion, and a cross section cut in a direction perpendicular to the X direction has a U-shape.
- the pair of slide portions 16 and 17 protrudes from the tips of the two side wall portions of the cover portion 18 in the Z direction and extends in the X direction.
- the connecting member 3 in which the cover portion 18 and the pair of slide portions 16 and 17 are integrated has a cross-section cut in a direction perpendicular to the X direction. It becomes a letter shape.
- the length along the X direction of the connecting member 3 is set to be the same as or slightly longer than the sum of the lengths along the X direction of the plurality of battery blocks 2 constituting the battery module 1.
- the length along the X direction of one battery block 2 is L 0
- the length L along the X direction of the connecting member 3 is 2L 0. It is set a little longer than.
- the connecting member 3 is fitted over the guide groove portions 14 and 15 of the two battery blocks 2.
- the fitting is performed by aligning the extending directions of the guide groove portions 14 and 15 of the two battery blocks 2 in a straight line, and by inserting the slide portions 16 and 17 of the connecting member 3 into the guide groove portions 14 and 15 from the end side of the battery module 1. This is done by sliding along the X direction.
- the tip of the slide part 16 and the tip of the slide part 17 face each other.
- the groove openings of the guide groove portions 14 and 15 of the two battery blocks 2 are opposite to each other.
- the plurality of battery blocks 2 are not separated in the Z direction and the Y direction, These can be integrated and connected in the X direction.
- the integrated connecting member 3 and the plurality of battery blocks 2 are fixed by appropriate fixing means so as not to be separated in the X direction.
- FIG. 2 is a cross-sectional view of FIG. 1A taken along a plane perpendicular to the X direction.
- the battery 5 is covered with a lid portion 10 which is a positive electrode side insulating lid on the positive electrode side, and a positive electrode current collector plate 12 is provided outside the lid portion 10, that is, on the opposite side of the battery 5.
- a positive electrode lead plate 20 having a lead terminal connected to the positive electrode terminal of the battery 5 is disposed between the positive electrode current collector plate 12 and the lid 10.
- the positive electrode current collector plate 12 and the positive electrode lead plate 20 are made of a conductive plate material such as metal.
- the lid 10 is provided with openings corresponding to the positive terminals 7 of the 20 batteries 5, and lead terminals are inserted into the respective openings and are connected to the positive terminals 7 by pressing or welding.
- the positive electrode lead plate 20 and the positive electrode current collector plate 12 are integrated by welding or the like, and fixed to the lid portion 10 by appropriate fixing means.
- the battery 5 is covered with a lid portion 11 that is a negative electrode side insulating lid on the negative electrode side, and a negative electrode current collector plate 13 is provided outside the lid portion 11, that is, on the opposite side of the battery 5.
- a negative electrode lead plate 21 having a lead terminal connected to the negative electrode terminal of the battery 5 is disposed between the negative electrode current collector plate 13 and the lid portion 11.
- the negative electrode current collector plate 13 and the negative electrode lead plate 21 are made of a conductive plate material such as metal. Openings corresponding to the negative electrode terminals 8 of the 20 batteries 5 are provided in the lid portion 11, and lead terminals are inserted into the respective openings and are connected to the negative electrode terminals 8 by pressing contact or welding.
- the negative electrode lead plate 21 and the negative electrode current collector plate 13 are integrated by welding or the like, and fixed to the lid portion 11 by appropriate fixing means. In this way, the 20 batteries 5 are connected to each other in parallel by the positive current collector 12 and the negative current collector 13.
- the connecting member 3 covers the end portion of the battery block 2 on the positive electrode side, and is airtightly joined to the slide portions 16 and 17 and the guide groove portions 14 and 15 of the lid portion 10 so that the end portion side of the battery block 2 on the positive electrode side.
- a duct space 24 through which gas can flow is formed. Since the positive side of the battery block 2 is the side where the safety valve 9 is arranged, the exhaust gas discharged from the safety valve 9 can be discharged to the outside through a duct space 24 without leaking to the outside. .
- the flow 25 when exhaust gas is discharged is indicated by white arrows.
- the guide groove portions 14 and 15 are provided in the lid portion 10 that is the positive electrode side insulating lid, but the guide groove portion can also be provided in the lid portion 11 that is the negative electrode side insulating lid.
- a battery module 30 shown in FIG. 3 uses a lid 31 having the same structure as the lid 10 that is a positive-side insulating lid as the negative-side insulating lid, instead of the lid 11 described in FIGS.
- the lid portion 31 is a negative electrode-side insulating plate and has guide groove portions 32 and 33.
- the guide groove portions 32 and 33 have the same structure as the guide groove portions 14 and 15 described with reference to FIGS.
- the connecting member 34 disposed on the negative electrode side has a pair of slide portions 35 and 36 and a cover portion 37, similar to the connecting member 3 described in FIGS. 1 and 2. Since the connecting member 34 is not for forming the duct space 24 but for covering the negative electrode current collector plate 13 and the negative electrode lead plate 21, the dimension in the Y direction is shorter than that of the connecting member 3.
- FIG. 4 is a diagram showing a battery module 41 in which two battery blocks 40A and 40B are arranged in the Y direction when the battery block 30 is obtained by removing the connecting members 3 and 34 from the battery module 30 of FIG.
- a new connecting member 42 is used.
- the connecting member 42 is provided with a pair of slide portions 43 and 44 in addition to the two slide portions 16 and 17 described with reference to FIG.
- the pair of slide portions 16 and 17 is provided to fit into the guide groove portions 14 and 15 of the lid portion 10 of the battery block 40B among the two battery blocks 40A and 40B arranged adjacent to each other. This is the same as FIG.
- another set of slide portions 43 and 44 is provided to fit into the guide groove portions 32 and 33 of the lid portion 31 of another battery block 40A.
- the connecting member 42 is an upper plate 45 that connects the slide portion 16 and the slide portion 43, a lower plate 46 that connects the slide portion 17 and the slide portion 44, and a connection that connects and integrates the upper plate 45 and the lower plate 46.
- a plate 47 is included.
- the connecting member 42 has an H-shaped cross section cut along a plane perpendicular to the X direction. Of the H-shape, the portion covering the lid portion 10 of the battery block 40A forms a duct space, and the portion covering the lid portion 31 of the battery block 40B does not form a duct space. Therefore, the cross-sectional shape of the connecting member 42 is an asymmetrical H shape.
- FIG. 4 shows an exhaust gas flow 25 discharged by the duct space.
- the two battery blocks 40A and 40B are aligned on the XY plane with a predetermined interval in the Y direction, and the guide groove portions 32, 33, 14, and 15 are arranged so as to be parallel to each other. Then, the slide portions 43, 44, 16, and 17 of the connecting member 42 are fitted into the guide groove portions 32, 33, 14, and 15 while sliding. In this way, using the connecting member 42, the two battery blocks 40A and 40B can be arranged in the Y direction and connected so as not to be separated in the Y direction and the Z direction to form the battery module 41. By using a plurality of connecting members 42, a battery module in which more battery blocks 40 are arranged in the Y direction can be obtained.
- FIG. 5 is a diagram showing a battery module 50 in which two battery blocks 2 described in FIGS. 1 and 2 are arranged in the Z direction.
- the two battery blocks 2 arranged adjacent to each other in the Z direction are distinguished and shown as battery blocks 2A and 2B.
- a new connecting member 51 is used.
- the connecting member 51 is provided with a pair of slide portions 52 and 53 in addition to the two pairs of slide portions 16 and 17 described in FIG.
- the pair of slide portions 16 and 17 are used for fitting into guide groove portions 14A and 14B provided in the lid portion 10A of the battery block 2A on one side of the two battery blocks 2A and 2B arranged adjacent to each other.
- a pair of newly provided slide portions 52 and 53 are inserted into guide groove portions 14B and 15B provided in the lid portion 10B of the battery block 2B on the other side of the two battery blocks 2A and 2B arranged adjacent to each other. Used.
- the connecting member 51 includes an upper plate 54 on which the slide portion 52 is provided, a lower plate 55 on which the slide portion 17 is provided, an intermediate plate 56 on which the slide portions 16 and 53 are provided, an upper plate 54, a lower plate 55, and an intermediate plate.
- a connecting plate 57 that connects and integrates 56 is included.
- the connecting member 51 covers the positive electrode side of the battery block 2A and the positive electrode side of the battery block 2B to form a duct space.
- FIG. 4 shows an exhaust gas flow 25 discharged by the duct space.
- the two battery blocks 2A, 2B are aligned on the XZ plane with a predetermined interval in the Z direction, and the guide groove portions 14A, 15A, 14B, 15B are arranged in parallel to each other. Then, the slide portions 16, 17, 52, 53 of the connecting member 51 are fitted into the guide groove portions 14A, 15A, 14B, 15B while sliding. In this way, using the connecting member 51, the two battery blocks 2A and 2B can be arranged in the Z direction and connected so as not to be separated in the Y direction and the Z direction to form the battery module 50. By increasing the number of intermediate plates 56 of the connecting member 51, a battery module in which more battery blocks 2 are arranged in the Z direction can be obtained.
- the plurality of battery blocks 2 or the plurality of battery blocks 40 are connected in each of the X direction, the Y direction, and the Z direction.
- the connecting member 60 shown in FIG. A plurality of battery blocks 40 can be connected to each other in the direction, the Y direction, and the Z direction.
- the direction in which the opening of the guide groove is directed is described as the Z direction.
- the guide groove portion can be opened in the X direction, which is a horizontal direction orthogonal to the Z direction.
- the cover portion 71 that is the positive electrode side insulating cover has guide groove portions 72 and 73 that open in the X direction that is the horizontal direction.
- the cover part 74 which is a negative electrode side insulating cover has guide groove parts 75 and 76 whose opening faces in the X direction.
- the connecting member 80 on the positive electrode side includes slide portions 81 and 82 projecting in the X direction, which is the horizontal direction, and a cover portion 83 connecting them.
- the connecting member 80 on the positive electrode side covers the lid portion 71 which is a positive electrode side insulating lid, and forms the duct space 24.
- the connecting member 84 on the negative electrode side includes slide portions 85 and 86 protruding in the X direction and a cover portion 87 for connecting them.
- the embodiment has been described in which the safety valve 9 is provided in the vicinity of the positive electrode terminal 7 of the battery 5 and the connecting member 3 is disposed so as to cover the lid portion 10 that is the positive electrode side insulating lid.
- the safety valve 9 can also be formed in the vicinity of the negative electrode terminal 8 of the battery 5.
- the duct space 24 through which the exhaust gas discharged from the safety valve 9 of the battery 5 needs to be formed on the negative electrode side of the battery block 2.
- the lid 11 since the duct space 24 is formed by the lid 11 that is the negative-side insulating lid, the lid 11 has a larger shape than the lid 10 that is the positive-side insulating lid.
- FIG. 8 is a perspective view showing the battery module 100 according to the second embodiment and the battery block 102 constituting the same.
- the battery block 102 according to the second embodiment can also be said to correspond to the battery assembly 4 according to the first embodiment. Therefore, in the following, regarding the battery block 102, differences from the battery assembly 4 according to the first embodiment will be mainly described.
- FIG. 8A shows the battery module 100
- FIG. 8B shows one battery block 102.
- the battery module 100 includes a plurality of battery blocks 102, a plurality of types of lid members 103, 104, 105, lid members 106, 107 for fixing the battery block 102 via the lid members 103, 104, 105, and fastening members 108. , 109.
- three battery blocks 102, four lid members 103, 104, 104, 105 and two lid members 106, 107 are shown.
- FIG. 8 the longitudinal direction of the battery 5 and the row arrangement direction are shown.
- the batteries 5 are arranged in a plurality of rows and a plurality of columns with the longitudinal direction aligned, and the direction in which the number of batteries to be arranged is large is the column arrangement direction.
- the direction in which six or seven batteries 5 are arranged is the column arrangement direction, and the direction in which three batteries 5 are arranged is the row arrangement direction.
- the safety valve 9 is provided in the vicinity of the positive electrode terminal 7 of the battery 5. Therefore, the gas discharge port of the safety valve 9 of each battery 5 is arranged on the positive electrode side of the battery block 102, and the exhaust gas from the inside of the battery 5 is discharged from the positive electrode side of the battery block 102.
- the battery storage section is arranged in a staggered arrangement corresponding to the arrangement of the batteries 5. That is, three battery storage units are arranged in the row direction, and there are seven, six, and seven battery storage units along the column direction.
- the length along the column arrangement direction of the battery storage portions in the center row is shorter than the length along the column arrangement direction of the battery storage portion columns on both sides of the center row.
- recessed portions 1015 and 1016 are formed as margin spaces in which the batteries 5 are not arranged.
- the recessed portions 1015 and 1016 extend from one side of the battery 5 to the other side along the longitudinal direction of the battery 5 and are recessed toward a portion where the battery 5 is disposed.
- the recessed portions 1015 and 1016 are through portions where the battery 5 extending from one side of the battery 5 to the other side along the longitudinal direction of the battery 5 is not disposed on both ends in the row arrangement direction of the plurality of batteries 5. is there.
- the through portion is not limited to the shape in which the battery case 6 is recessed like the recessed portions 1015 and 1016, but may be a through hole formed at the position of the recessed portions 1015 and 1016 in the battery case 6.
- a plastic case made of plastic and shaped into a predetermined shape can be used.
- a main material made of aluminum and having a predetermined shape by extrusion molding or die casting can be used.
- the battery case 6 may be omitted, and a plurality of batteries 5 arranged in a staggered shape may be fixed with an appropriate insulating material or insulating sheet.
- a battery in which a plurality of batteries 5 are simply arranged in a staggered pattern may be fixed by a positive electrode side insulating plate 1020 and a negative electrode side insulating plate 1022 described later.
- the through portion is configured as a portion of the battery block 102 where the battery 5 is not disposed.
- the battery module 100 has three battery blocks 102 arranged side by side with the direction parallel to the longitudinal direction of the battery 5 as the arrangement direction of the battery blocks 102.
- FIG. 8 the arrangement
- FIG. 8A the three battery blocks 102 are distinguished and shown as battery blocks 102A, 102B, and 102C. Arrangement is made so that the positions of the recesses 1015 and 1016 that are through portions of the three battery blocks 102A, 102B, and 102C are aligned along the arrangement direction of the battery block 102.
- the lid members 103, 104, and 105 are respectively disposed at both ends of each of the battery blocks 102A, 102B, and 102C along the arrangement direction of the battery block 102. That is, here, the lid members 103, 104, and 105 are members that are arranged on the positive electrode side or the negative electrode side of the battery blocks 102A, 102B, and 102C, and have three types of shapes depending on the arrangement positions.
- the lid members 103 and 105 are formed on the two battery blocks 102A and 102C arranged at both ends of the three battery blocks 102A, 102B and 102C arranged along the arrangement direction of the battery block 102 in the battery module 100. Is to be placed.
- the lid member 103 is disposed on the positive electrode side of the battery block 102A
- the lid member 105 is disposed on the negative electrode side of the battery block 102C. Since the safety valve 9 is disposed on the positive electrode side of the battery block 102A, the lid member 103 covers the positive electrode side of the battery block 102A and forms a duct space through which the exhaust gas discharged from the safety valve 9 can flow. It has a larger shape.
- the lid member 104 is disposed between adjacent battery blocks 102 and has a shape in which the lid member 103 and the lid member 105 are integrated. That is, the same shape as the lid member 105 is assigned to one negative electrode side of the adjacent battery block 102, and the same shape as the lid member 103 is assigned to the other positive electrode side.
- the adjacent battery blocks 102 include the battery block 102A, the battery block 102B, and the battery block. Since there are the battery block 102C and the battery block 102C, the lids 104 are arranged between the battery block 102A and the battery block 102B and between the battery block 102B and the battery block 102C, respectively.
- the lid members 103 and 105 When viewed in a cross section parallel to the arrangement direction of the battery block 102, the lid members 103 and 105 have a U-shape or a C-shape, and the lid member 104 has an H-shape. In the H shape, the space volume on the side where the duct space 1024 is formed is larger than the space volume formed on the side where the safety valve 9 is not disposed.
- the lid members 103, 104, 105 it is possible to use a material obtained by molding an appropriate metal material or plastic material having predetermined heat resistance and strength into a predetermined shape.
- the fixing members 106 and 107 are connecting members that fix the three battery blocks 102 via the four lid members 103, 104, and 105. Since the three battery blocks 102 are arranged so that the positions of the respective recessed portions 1015 and 1016 are aligned along the arrangement direction, the fixing member 106 is placed on each of the recessed portions 1015 of the three battery blocks. The fixing member 107 is disposed along the recess 1016 of each of the three battery blocks. As described above, the marginal space of the recessed portions 1015 and 1016 is effectively used for fixing the battery block 102.
- the fastening members 108 and 109 are attached to the both ends of the fixing members 106 and 107 via the lid members 103 and 105, and the three battery blocks 102 are connected to the four lid members 103 and 104, by a fastening method such as screw fastening. Used to fix through 105.
- a fastening method such as screw fastening. Used to fix through 105.
- bolts and nuts can be used as the fastening members 108 and 109.
- FIG. 9 is a cross-sectional view seen from the direction A in FIG. 8 and shows the cover members 103 and 104, the recess 1015, the fixing member 106, and the fastening member 108.
- the battery 5 is provided with a positive electrode-side insulating plate 1020 on the positive electrode side, and the positive electrode plate 1021 is disposed so as to contact the positive electrode terminal 7 of each battery 5 through this.
- a negative electrode insulating plate 1022 is provided on the negative electrode side, and the negative electrode plate 1023 is disposed so as to contact the negative electrode terminal 8 of each battery 5 through the negative electrode insulating plate 1022.
- the lid members 103 and 104 are connected to the positive electrode plate 1021 and the negative electrode plate 1022 via an insulating member 1026, respectively.
- the positive electrode plate 1021 and the positive electrode side insulating plate 1020, and the negative electrode plate 1023 and the negative electrode side insulating plate 1022 are fixed in close contact with each other when the lid members 103 and 104 are pressed against the battery 5 side.
- the insulating member 1026 preferably has a recess into which the leg portions of the lid members 103 and 104 are fitted.
- the lid member 103 is fixed to the battery block 102 using a fixing member 106 and a fastening member 108. Covers the positive electrode side end of the battery block 102 and hermetically joins the positive electrode insulating plate 1020 and the battery case 6 to form a duct space 1024 through which gas can flow to the positive electrode side end side of the battery block 102. To do. With such a structure, the exhaust gas discharged from the safety valve 6 can be discharged to the outside through a duct space 1024 through the duct space 1024 without leaking elsewhere. In FIG. 8, a flow 1025 when exhaust gas is discharged is indicated by a white arrow.
- FIG. 10 is a diagram showing details of the fixing member 106. Note that the fixing member 107 also has the same structure as the fixing member 106. FIG. 10 is a cross-sectional view of the battery module 100 as seen from the A direction, similarly to FIG.
- the fixing member 106 has a length L 0 between both end portions of the battery module 100, and has a shaft main body 1030 and fixing screw portions 1031 and 1032 at both end portions thereof.
- a length L 0 between both end portions of the battery module 100 is a distance between the outermost end portion of the lid member 103 and the outermost end portion of the lid member 105.
- bolts are used for the fastening members 108, so the shaft main body 1030 may have any female threaded portion at both ends, and the female thread is cut at both ends with a solid round bar. It may be a hollow rod, and a female screw may be cut at both ends of the hollow hole.
- a metal bar having an appropriate strength, which has been subjected to predetermined screw processing, can be used.
- a nut can also be used as a fastening member. In that case, it becomes a structure which protrudes the thread part of a male screw in the both ends of the shaft main body 1030.
- FIG. 11 is a view showing a fixing member 1040 having another structure. 11 is a cross-sectional view of the battery module 100 as viewed from the A direction, similarly to FIG.
- the fixing member 1040 includes three spacer rod members 1041.
- the spacer bar member 1041 has a length L 1 between adjacent lids, and has a shaft body 1042 having an outer peripheral shape that can be tightened, a male screw portion 1043 provided at one end thereof, and a female screw portion provided at the other end thereof. 1044.
- a length L 1 between adjacent lids is a length along the arrangement direction, and is an inner wall of a lid portion arranged on the positive electrode side of one battery block 102 and a lid portion arranged on the negative electrode side. This is the distance between the inner wall.
- the three spacer bar members 1041 are respectively arranged between the lid member 103 and the lid member 104 adjacent thereto, between the lid member 104 and the lid member 104 adjacent to each other, and between the lid member 105 and the lid member 104 adjacent thereto. Be placed.
- the male thread part 1043 of the spacer bar member 1041 on one side and the female thread part 1044 of the spacer bar member 1041 on the other side mesh with each other, and the three spacer bar members 1041 are one fixing member. 1040 is formed.
- the spacer bar member 1041 can be tightened around its axis. In the example of FIG.
- the shaft main body 1042 is formed of a hexagonal bar, and can be tightened around the shaft using an appropriate hexagonal spanner or the like.
- the shaft body may be a round bar and a part of the shaft body may be hexagonal.
- a square shape or the like may be used, and a hole into which a turning jig can be inserted may be provided.
- the fastening member on the lid member 105 side is a bolt, but the fastening member 1045 on the lid member 103 side is a nut. Note that the fastening member 108 and the fastening member 1045 can be interchanged by reversing the mounting direction of the spacer bar member 1041.
- the embodiment has been described in which the safety valve 9 is provided near the positive electrode terminal 7 of the battery 5, the lid member 103 is provided on the positive electrode side of the battery block 102, and the duct space 1024 is provided on the positive electrode side of the battery block 102.
- the safety valve 9 can also be formed near the negative electrode terminal 8 of the battery 5.
- the duct space 1024 through which the exhaust gas discharged from the safety valve 9 of the battery 5 needs to be formed on the negative electrode side of the battery block 102.
- the lid member 105 since the duct space 1024 is formed by the lid member 105, the lid member 105 has a larger shape than the lid member 103.
Abstract
Description
以下に図面を用いて、本発明の第1の実施の形態を詳細に説明する。以下で述べる材質、寸法、寸法、形状、電池の数、電池ブロックの数等は説明のための例示であって、電池ブロック、電池モジュールの仕様に応じ、適宜変更が可能である。以下では、全ての図面において対応する要素には同一の符号を付し、重複する説明を省略する。
ガイド溝部14,15を有するガイド部材を用いるときは、蓋部10と同様の絶縁材料で成形される。
このようにして、20個の電池5は、正極集電板12と負極集電板13によって互いに並列接続される。
図8は、第2の実施の形態に係る電池モジュール100とこれを構成する電池ブロック102を示す斜視図である。第2の実施の形態に係る電池ブロック102は、第1の実施の形態に係る電池集合体4に相当するものとも言える。よって、以下では、電池ブロック102については、第1の実施の形態に係る電池集合体4との相違について主に説明する。図8(a)は電池モジュール100を示し、(b)は1つの電池ブロック102を示す。電池モジュール100は、複数の電池ブロック102と、複数種類の蓋部材103,104,105と、電池ブロック102を蓋部材103,104,105を介して固定する蓋部材106,107と、締結部材108,109を含んで構成される。ここでは、3つの電池ブロック102と、4つの蓋部材103,104,104,105と、2つの蓋部材106,107が示されている。
Claims (6)
- 複数の電池ブロックと、
前記複数の電池ブロックを予め定めた配置方向に揃えて連結する連結部材と、
を備える電池モジュールであって、
前記電池ブロックは、
長手方向を揃えた複数の電池と、
前記複数の電池を整列配置して収納する電池ケースと、
前記電池ケースにおける前記電池の正極側端部または負極側端部に配置される絶縁蓋と、
前記絶縁蓋に設けられ、互いに平行な方向に延伸する少なくとも一組のガイド溝部であって、前記連結部材に設けられる少なくとも一組のスライド部が嵌め込まれるガイド溝部と、
を含み、
前記複数の電池ブロックは、それぞれの前記ガイド溝部の延伸する方向を揃えて配置され、前記連結部材の前記スライド部が前記複数の電池ブロックのそれぞれの前記ガイド溝部にまたがって嵌め込まれて互いに連結される、電池モジュール。 - 複数の電池ブロックと、
前記複数の電池ブロックを予め定めた配置方向に揃えて連結する連結部材と、
を備える電池モジュールであって、
前記電池ブロックは、
長手方向を揃えた複数の電池と、
前記複数の電池を整列配置して収納する電池ケースと、
前記電池ケースにおける前記電池の正極側端部に配置され、前記電池の正極と正極集電板との間の絶縁を行う正極側絶縁蓋と、
前記電池ケースにおける前記電池の負極側端部に配置され、前記電池の負極と負極集電板との間の絶縁を行う負極側絶縁蓋と、
前記正極側絶縁蓋または前記負極側絶縁蓋の少なくとも一方に設けられ、互いに平行な方向に延伸する少なくとも一組のガイド溝部であって、前記連結部材に設けられる少なくとも一組のスライド部が嵌め込まれるガイド溝部と、
を含み、
前記複数の電池ブロックは、それぞれの前記ガイド溝部の延伸する方向を揃えて配置され、前記連結部材の前記スライド部が前記複数の電池ブロックのそれぞれの前記ガイド溝部にまたがって嵌め込まれて互いに連結される、電池モジュール。 - 請求項1または2に記載の電池モジュールにおいて、
前記電池は安全弁を有し、
前記電池ブロックは、前記電池の前記安全弁の側を前記正極側端部の側または前記負極側端部の側の側に揃え、
前記連結部材は、前記電池の前記安全弁の側が揃えられた前記電池ブロックの前記正極側端部の側または前記負極側端部の側を覆い、前記安全弁から排出される排ガスを流すダクト空間を形成するダクト兼用部材である、電池モジュール。 - 請求項1または2に記載の電池モジュールにおいて、
前記複数の電池ブロックについて、前記電池ブロックの前記複数の電池の整列配置面を1つの面に揃えるときに前記整列配置面が延びる方向をX方向として、
前記複数の電池ブロックを前記X方向に揃えて配置するときは、
前記電池ブロックの前記一組のガイド溝部は、前記X方向に沿って平行に、互いに離間して設けられ、
前記連結部材の前記一組のスライド部は、前記X方向に沿って平行に、互いに離間して設けられる、電池モジュール。 - 請求項4に記載の電池モジュールにおいて、
前記複数の電池ブロックを前記X方向に揃えて配置すると共に、前記X方向に直交し前記電池の長手方向に平行なY方向にも揃えて配置するときは、
前記電池ブロックの前記ガイド溝部は、前記正極側絶縁蓋と前記負極側絶縁蓋のそれぞれに一組ずつの合計二組設けられ、
前記連結部材は、前記Y方向に沿って隣接する前記電池ブロックで互いに向かい合う端部にそれぞれ設けられる二組の前記ガイド溝部に嵌め込まれる、電池モジュール。 - 請求項1または4に記載の電池モジュールにおいて、
前記複数の電池ブロックを前記X方向に揃えて配置すると共に、前記X方向に直交して前記電池の長手方向に直交するZ方向にも揃えて配置するときは、
前記連結部材は、前記Z方向に沿って隣接する前記電池ブロックで互いに向かい合う端部にそれぞれ設けられる二組のガイド溝部に嵌め込まれる、電池モジュール。
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2017
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JP2016081864A (ja) * | 2014-10-22 | 2016-05-16 | トヨタ自動車株式会社 | 蓄電モジュール |
JP2018503260A (ja) * | 2015-01-15 | 2018-02-01 | アイオクサス, インコーポレイテッドIoxus,Inc. | エネルギー蓄積デバイスを閉じ込める為の装置 |
CN107210389A (zh) * | 2015-01-15 | 2017-09-26 | 翱旭公司 | 用于封闭能量存储装置的设备 |
EP3082174A1 (de) * | 2015-04-14 | 2016-10-19 | EsprlTschmiede GbR | Energiespeichervorrichtung und zellhalter für eine energiespeichervorrichtung |
DE102015004762B4 (de) | 2015-04-16 | 2021-08-12 | Wilhelm Neuss | Batteriemodul |
WO2016165834A1 (de) * | 2015-04-16 | 2016-10-20 | Neuss Wilhem | Batteriemodul |
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US10784480B2 (en) | 2015-10-02 | 2020-09-22 | Vehicle Energy Japan Inc. | Assembled battery |
JP2018536258A (ja) * | 2015-10-27 | 2018-12-06 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツングRobert Bosch Gmbh | 係合する突起−溝固定手段を有するレールを含むバッテリケース |
US10804510B2 (en) | 2016-11-04 | 2020-10-13 | Lg Chem, Ltd. | Battery pack including a fixing member |
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JP2018110048A (ja) * | 2016-12-28 | 2018-07-12 | 日産自動車株式会社 | 車両搭載用の電池パック |
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JP2019050170A (ja) * | 2017-09-12 | 2019-03-28 | トヨタ自動車株式会社 | 車両のバッテリ搭載構造 |
WO2019071239A1 (en) * | 2017-10-06 | 2019-04-11 | Farady&Future Inc. | DENSES ENERGY STORAGE SYSTEMS |
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Also Published As
Publication number | Publication date |
---|---|
US20160006006A1 (en) | 2016-01-07 |
JPWO2014125807A1 (ja) | 2017-02-02 |
CN104981920B (zh) | 2017-12-15 |
JP2017224627A (ja) | 2017-12-21 |
CN104981920A (zh) | 2015-10-14 |
JP6199369B2 (ja) | 2017-09-20 |
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