WO2012164923A1 - 電池ブロックおよびその製造方法 - Google Patents
電池ブロックおよびその製造方法 Download PDFInfo
- Publication number
- WO2012164923A1 WO2012164923A1 PCT/JP2012/003532 JP2012003532W WO2012164923A1 WO 2012164923 A1 WO2012164923 A1 WO 2012164923A1 JP 2012003532 W JP2012003532 W JP 2012003532W WO 2012164923 A1 WO2012164923 A1 WO 2012164923A1
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- WIPO (PCT)
- Prior art keywords
- metal pipe
- wall surface
- insulating layer
- battery block
- battery
- Prior art date
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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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
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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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/643—Cylindrical cells
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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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
- H01M10/6555—Rods or plates arranged between the cells
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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
- H01M50/204—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
- H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
- H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
- H01M50/222—Inorganic material
- H01M50/224—Metals
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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
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
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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
- H01M50/291—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 characterised by their shape
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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
- H01M50/293—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 characterised by the material
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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
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49108—Electric battery cell making
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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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49108—Electric battery cell making
- Y10T29/49115—Electric battery cell making including coating or impregnating
Definitions
- the present invention relates to a battery block and a manufacturing method thereof.
- a plurality of battery units (battery blocks) that accommodate a plurality of single cells may be electrically connected to form a power supply device (battery pack) (see Patent Document 1).
- the battery block includes a plurality of single cells and a storage container for storing the single cells; however, the storage container may be made of resin in order to obtain electrical insulation from the single cells.
- the resin container has low heat dissipation. Therefore, in order to release the heat generated by the unit cells during operation and prevent the temperature of the unit cells from rising, a container made of a resin-metal composite material has been proposed in order to improve the heat dissipation of the container (patent) Reference 2).
- Patent Document 4 discloses a battery storage method in which an annular space between a battery cell and a case is filled with an insulating material having high thermal conductivity without a gap through a through hole provided on a side surface of the case. Yes.
- the battery cell can be fixed in the case.
- the annular space between the battery cell and the case is filled with the insulating material, it is difficult to firmly fix the cases together.
- the battery block housing container is required to have both insulation and heat dissipation from the unit cell, and it has been proposed to obtain a housing container by combining a metal member and a resin member.
- a battery unit storage container that sufficiently copes with a problem (such as a short circuit) caused by contact between battery units.
- an object of the present invention is to provide a battery block that does not cause a short circuit or the like even if unnecessary contact between the battery blocks occurs.
- the first of the present invention relates to the battery block shown below.
- a battery case including a plurality of metal pipe-shaped members joined or bonded to each other, a unit cell accommodated in each of the plurality of metal pipe-shaped members, and a plurality of metal pipe-shaped members
- a battery block including an insulating layer covering a wall surface or an outer wall surface, At least the metal pipe-shaped member disposed on the outer periphery of the battery block has a through hole on the side surface or a notch at the side edge, and a through hole or a gap formed between the inner wall surface and the unit cell.
- the second of the present invention relates to a battery block manufacturing method shown below.
- a method for manufacturing a battery block, in which a pipe-shaped member is disposed, and an insulating layer that is continuous from the gap formed between the inner wall surface and the unit cell to the outer wall surface through a through hole or notch is disposed.
- the insulating layer is formed by winding a resin film or applying a resin on the outer wall surface of the metal pipe-shaped member and curing the resin film.
- the insulating layer is formed by injecting a resin into the metal pipe-shaped member in which the unit cell is accommodated and curing it, and forming an insulating layer in the gap between the inner wall surface of the metal pipe-shaped member and the unit cell.
- [10] providing a battery case including a plurality of metal pipe-like members joined or bonded to each other; Forming an insulating layer on the outer or inner wall surface of the battery case; A battery block manufacturing method comprising: storing a single cell inside a metal pipe-shaped member of the battery case. [11] The method for manufacturing a battery block according to [10], wherein the insulating layer is formed by applying a resin to the outer wall surface of the battery case or the inner wall surface of the metal pipe-shaped member and curing the resin. . [12] The method for manufacturing a battery block according to [10], wherein the insulating layer is formed by forming an insulating oxide layer on the outer wall surface of the battery case or the inner wall surface of the metal pipe-shaped member.
- the battery block of the present invention achieves both insulation with the unit cell and heat dissipation, and suppresses the occurrence of short circuits due to unnecessary contact between the battery blocks. Therefore, the power supply device including a plurality of battery blocks of the present invention has sufficient durability even when used in a place where it is susceptible to vibration.
- FIG. 1A is a perspective view of a battery block according to the first embodiment.
- FIG. 1B is an exploded perspective view of the battery block according to the first embodiment.
- FIG. 2A is a top view of the battery case of the battery block according to the first embodiment having no frame.
- FIG. 2B is a top view of the battery case of the battery block according to the first embodiment having a frame.
- 3A and 3B are top views showing examples of the arrangement of the pipe-like members in the battery case of the battery block.
- FIG. 4A is a perspective view of a pipe-like member having a through hole.
- FIG. 4B is a perspective view of a pipe-shaped member having a notch.
- 5A and 5B are perspective views of the battery block according to the first embodiment.
- FIG. 6 is a top view showing an example of a battery block.
- FIG. 7 is a top view of the battery block according to the second embodiment.
- FIG. 8 is a top view showing an example of a battery block according to the second embodiment.
- 9A, 9B, and 9C are manufacturing process diagrams of the battery block according to the second embodiment.
- the battery block has a battery case and a plurality of single cells.
- the battery case has a plurality of pipe-shaped members, and a unit cell is accommodated in a hollow portion of each pipe-shaped member.
- the unit cells included in the battery block may have power storage performance. In that case, the battery block functions as a high capacity or high output storage battery.
- FIG. 1A is a perspective view of the battery block 100.
- FIG. 1B is an exploded perspective view of the battery block 100.
- the battery block 100 includes an electrode plate 10, a holder 20, a plurality of pipe-shaped members 30, a plurality of single cells 40, a holder 50, and an electrode plate 60.
- Each cell 40 is accommodated in the pipe-shaped member 30.
- the accommodated unit cell 40 is supported by the holder 20 and the holder 50.
- One electrode 41 of the unit cell is connected to the electrode plate 10, and the other electrode 42 is connected to the electrode plate 60.
- each of the plurality of single cells 40 is accommodated in a pipe-shaped member 30.
- the aggregate of the plurality of pipe-shaped members 30 constitutes a battery case in the battery block of the present invention.
- the plurality of pipe-shaped members 30 are preferably fixed and integrated in contact with each other.
- the plurality of pipe-shaped members constituting the battery case are joined together and integrated. More specifically, the side surfaces of the pipe-shaped member are joined and integrated.
- the pipe-shaped members 30 may be welded or brazed, or may be bonded with an adhesive or the like.
- the number of pipe-shaped members included in one battery case is not particularly limited as long as it is two or more.
- the battery case may not further include the frame 39 surrounding the plurality of integrated pipe-shaped members 30 as shown in FIG. 2A, or may have as shown in FIG. 2B.
- the frame may be made of metal.
- the battery case may include a connection member for connecting the battery blocks and a connection member for connecting to an external component.
- the pipe-shaped member 30 may be, for example, a circular pipe or a polygonal pipe such as a quadrangle.
- the inside of the pipe-shaped member is hollow along the axial direction of the pipe.
- Each pipe-shaped member 30 accommodates a unit cell 40.
- the unit cell 40 is usually cylindrical, but may be prismatic.
- the plurality of pipe-shaped members 30 are integrated so as to be in contact with each other.
- sequence aspect of the pipe-shaped member 30 is not specifically limited.
- the pipe-like member 30 is a circular pipe, it may be arranged in a close-packed manner as shown in FIG. 3A or a square arrangement as shown in FIG. 3B.
- the pipe-shaped member 30 may have a through hole on the side surface of the pipe or may have a notch.
- FIG. 4A shows a pipe-like member 30-1 having a through hole 35 formed therein.
- FIG. 4B shows a pipe-like member 30-2 in which a notch 36 is formed. These through holes or notches can serve as injection holes for injecting resin into the pipe-shaped member.
- the pipe-shaped member 30 is made of metal.
- the metal constituting the pipe-shaped member 30 is preferably a metal having high thermal conductivity, such as aluminum, copper, brass, stainless steel, or an alloy thereof, and may be a laminate thereof. In order to reduce the weight of the pipe-shaped member, aluminum is preferable.
- the thickness of the plate constituting the pipe-shaped member 30 is preferably 0.2 to 0.8 mm, for example, about 0.4 mm. A thinner thickness is preferable because the battery case can be reduced in weight, but if it is too thin, the strength as the case cannot be obtained.
- the battery case of the battery block preferably has an insulating layer.
- an insulating layer covering the outer wall surface of the aggregate of metal pipe-like members is provided.
- the arrangement mode of the insulating layer is not limited to these.
- assembly of metal pipe-shaped members as shown to FIG. 5B.
- the insulating layer is typically a layer containing an insulating resin.
- insulating resin examples include polyolefin such as polyimide, epoxy resin, polyester, and polypropylene.
- the insulating resin may be a heat resistant adhesive containing silica powder or zirconia powder.
- the insulating layer may be a metal oxide layer. For example, if the pipe-shaped member 30 is aluminum, the surface layer may be oxidized to form an aluminum oxide layer.
- the battery block 100-1 shown in FIG. 5A has an insulating layer 80-1 covering the outer wall surface of the assembly of the plurality of metal pipe-like members 30 constituting the battery case.
- the battery block 100-2 shown in FIG. 5B includes an insulating layer 80-2 that covers a frame 39 that surrounds an assembly of a plurality of metal pipe-like members 30 that form a battery case.
- a single battery 40 is accommodated in each of the metal pipe-shaped members 30.
- the battery block 100-3 shown in FIG. 6 has an insulating layer 80-3 in the gap between the inner wall surface of the plurality of metal pipe-like members 30 constituting the battery case and the unit cell 40.
- the metal pipe-shaped member 30 and the single cell 40 are insulated, even if the battery blocks are in contact with each other, the single cell of one battery block and the single cell of the other battery block are short-circuited. None do.
- the battery block 100-4 includes (a) battery cases 30 and 30-2 including a plurality of metal pipe-like members joined or bonded to each other; 1) a cell 40 accommodated in each of the plurality of metal pipe-shaped members 30, 30-2, and 2) an insulating layer 80 covering the inner wall surface or the outer wall surface of the metal pipe-shaped members 30, 30-2. -4, 80-5.
- the metal pipe-like member 30-2 disposed at least on the outer periphery of the battery block 100-4 has a notch 36 at the side surface end.
- An insulating layer 80-5 that is continuous from the gap (80-4) formed between the inner wall surface and the unit cell to the outer wall surface through the notch 36 is disposed.
- An insulating layer 80-4 formed between the inner wall surface and the unit cell and an insulating layer 80-5 formed on the outer periphery of the battery block 100-4 are integrally formed through the notch 36. Therefore, insulation between battery blocks is ensured.
- a plurality of metal pipe-shaped members are firmly fixed to each other by integrally forming metal pipe-shaped members disposed on the outer periphery of the battery block using an insulating layer.
- the metal pipe member 30-2 is used here, a metal pipe member 30-1 having a through-hole 35 on the side surface as shown in FIG. 4A may be used.
- an insulating layer may be disposed in a gap 80-6 formed between outer wall surfaces of a plurality of metal pipe-like members. This is because a plurality of metal pipe-shaped members can be more firmly fixed. Further, in the metal pipe-like member arranged inside the battery block, the insulating layer is continuous from the gap formed between the inner wall surface and the unit cell to the outer wall surface through the through hole or notch. May be arranged. This is because the unit cell can be fixed more firmly.
- the battery case may further include a metal frame 39 surrounding the plurality of metal pipe-shaped members. In addition, it is preferable that an insulating layer covers the inner wall face of a metal pipe-shaped member, and a cell and a metal pipe-shaped member do not contact.
- the battery block manufacturing method includes 1) a mode in which a single cell is accommodated in a battery case including a plurality of pipe-shaped members, and then an insulating layer is formed. After forming, it is divided roughly into the mode of accommodating the unit cell. 1) When the insulating layer is formed after the unit cell is accommodated in the pipe-shaped member of the battery case: When forming the insulating layer after accommodating the unit cell, it is preferable to form the insulating layer under conditions of 130 ° C. or lower, preferably 80 ° C. or lower in order to prevent softening of the resin parts inside the unit cell.
- Examples of specific methods for forming the insulating layer include: a) winding a resin film around the outer wall surface of a battery case including a plurality of pipe-shaped members, or applying and curing a resin; b) a single cell A resin is injected into the inside of the pipe-shaped member of the battery case containing the resin and cured.
- the resin film may be applied as it is to the outer wall surface of the battery case including a plurality of pipe-shaped members.
- a greater adhesive force can be obtained by thermosetting.
- a thermosetting rubber-based pressure-sensitive adhesive resin increases its adhesive strength by being thermoset at 120 ° C.
- the resin may be injected by, for example, injecting an adhesive resin.
- the injected adhesive resin can be cured at room temperature. Further, when cured by heating (for example, about 60 to 100 ° C.), the adhesive force is increased and the curing time is shortened.
- the outer wall surface of the battery case including a plurality of pipe-shaped members is the outer peripheral surface of the aggregate of the plurality of pipe-shaped members (FIG. 5A), or the outer peripheral surface of the frame of the aggregate of the plurality of pipe-shaped members. (FIG. 5B).
- a through-hole or a notch is provided in the pipe-shaped member (see FIG. 4AB), and the resin is passed through them. It is preferable to inject.
- the insulating layer when the insulating layer is formed before accommodating the unit cell, the insulating layer may be formed by oxidizing the outer peripheral wall surface of the battery case to form an oxide layer.
- the outer peripheral wall surface of the battery case may be anodized to form an aluminum oxide layer.
- a plurality of the battery blocks of the present invention can be electrically connected to each other and used as a power supply device.
- the electric connection between the battery blocks may be a series connection or a parallel connection. And even if the battery blocks of the present invention make an unintended contact, there is no short circuit. Therefore, the battery blocks of the present invention can be arranged close to each other and can be used in an environment subject to vibration.
- a battery block manufacturing method according to the second embodiment of FIG. 7 will be described with reference to FIGS. 9A to 9C.
- a bottomed fitting type metal frame 39-2 as shown in FIG. 9A is prepared.
- a battery case including a plurality of metal pipe-like members 30 and 30-2 joined or bonded to each other is prepared. It is preferable that a metal pipe-like member 30-2 having a notch 36 at the end of the side surface is disposed at least on the outer periphery of the battery block.
- a plurality of metal pipe-like members 30 and 30-2 are arranged in the frame of the mold 39-2.
- the unit cell 40 is disposed inside the plurality of metal pipe-shaped members 30 and 30-2.
- the inner wall surface or the outer wall surface of the plurality of metal pipe-shaped members 30-2 is covered with an insulating layer.
- an insulating resin is injected into a gap (80-4) formed between the inner wall surface of the metal pipe-shaped member 30-2 and the unit cell 40.
- the metal pipe-like member 30-2 is filled with insulating resin in the continuous space (80-4, 80-5) from the inner wall surface to the outer wall surface through the notch 36 as shown in FIG. 4B. Is done.
- the insulating resin injected into one metal pipe-shaped member 30-2 passes through the notch 36, and the inner wall surface of another adjacent metal pipe-shaped member 30-2 disposed on the outer peripheral portion.
- the inner wall surface and the outer wall surface of the adjacent metal pipe-shaped members 30-2 arranged on the outer peripheral portion are made of an insulating resin that becomes the insulating layers 80-4 and 80-5 by later heat-curing. Can be covered. Further, by devising the position of the notch 36 of the metal pipe-like member 30-2 or by providing a through-hole on the side surface, as shown in FIG. An insulating layer may be provided up to a gap formed between the inner wall surface of the pipe-shaped member 30 and the unit cell 40.
- the application method of covering the inner wall surface and the outer wall surface of the plurality of metal pipe-shaped members 30-2 with the insulating resin in one step has been described.
- an insulating layer is provided for each metal pipe-shaped member 30-2.
- An insulating resin which becomes 80-4 or 80-5 may be applied.
- the insulating resin is heated and cured to form the insulating layers 80-4 and 80-5. Thereafter, the mold 39-2 is removed.
- the battery block 100-4 according to the embodiment shown in FIG. 7 is manufactured.
- the insulating resin 80-5 can be easily disposed on the outer periphery of the battery block 100-4.
- a plurality of the battery blocks of the present invention can be electrically connected to each other and used as a power supply device.
- Electrode plate 20 Holder 30,30-1,30-2 Pipe-shaped member 35 Through-hole 36 Notch 39 Frame 40 Unit cell 41 Electrode 42 Electrode 50 Holder 60 Electrode plate 80-1, 80-2, 80-3, 80-4, 80-5 Insulating layer 100, 100-1, 100-2, 100-3, 100-4 Battery block
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Battery Mounting, Suspending (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
Description
その他にも、種々の関連技術が開示されている(例えば、特許文献4~6参照)。
例えば特許文献4には、バッテリセルとケースとの間の環状空間に、ケースの側面に設けた貫通孔を介して、熱伝導性の高い絶縁材を隙間なく充填するバッテリ格納方法が開示されている。この発明によれば、ケース内にバッテリセルを固定することができる。しかし、バッテリセルとケースとの間の環状空間のみが絶縁材で充填されるため、ケース同士を強固に固定することは困難であった。また電池ブロック同士の接触による短絡などを防止することが困難であった。
少なくとも電池ブロックの外周部に配置される金属製パイプ状部材は、側面に貫通口または側面端部に切り欠きを有し、内壁面と単電池との間に形成された隙間から、貫通孔または切り欠きを介して、外壁面にまで連続する絶縁層が配置されている電池ブロック。[2]絶縁層は、さらに複数の金属製パイプ状部材の外壁面間に形成された隙間に配置されている、[1]に記載の電池ブロック。[3]絶縁層は、さらに電池ブロックの内側に配置された金属製パイプ状部材において、内壁面と単電池との間に形成された隙間から、貫通孔または切り欠きを介して、外壁面にまで連続して配置されている、[1]に記載の電池ブロック。[4]絶縁層は、金属製パイプ状部材の内壁面を覆い、単電池と金属製パイプ状部材とは接触しない、[1]に記載の電池ブロック。[5]電池ケースは、複数の金属製パイプ状部材を囲む金属製枠体をさらに有する、[1]に記載の電池ブロック。
[6]互いに接合または接着された複数の金属製パイプ状部材を含む電池ケースを用意するステップと、複数の金属製パイプ状部材の内部に単電池を収容するステップと、複数の金属製パイプ状部材の内壁面または外壁面を絶縁層で覆うステップと、を含む、電池ブロックの製造方法であって、少なくとも電池ブロックの外周部に、側面に貫通口または側面端部に切り欠きを有する金属製パイプ状部材を配置し、内壁面と単電池との間に形成された隙間から、貫通孔または切り欠きを介して、外壁面にまで連続する絶縁層を配置する、電池ブロックの製造方法。
[7]絶縁層の形成は、130℃以下で行う、[6]に記載の電池ブロックの製造方法。
[8]絶縁層の形成は、金属製パイプ状部材の外壁面に、樹脂フィルムをまき回すかまたは樹脂を塗布して硬化させる、[6]に記載の電池ブロックの製造方法。
[9]絶縁層の形成は、単電池が収容された金属製パイプ状部材の内部に樹脂を注入して硬化させ、金属製パイプ状部材の内壁面と単電池との隙間に絶縁層を形成する、[6]に記載の電池ブロックの製造方法。
電池ケースの外壁面または内壁面に絶縁層を形成するステップと、
電池ケースの金属製パイプ状部材の内部に単電池を収容するステップと、を含む、電池ブロックの製造方法。[11]絶縁層の形成は、電池ケースの外壁面または金属製パイプ状部材の内壁面に樹脂を塗布して硬化させて、絶縁層を形成する、[10]に記載の電池ブロックの製造方法。[12]絶縁層の形成は、電池ケースの外壁面または金属製パイプ状部材の内壁面に絶縁性の酸化物層を形成する、[10]に記載の電池ブロックの製造方法。
<電池ブロック>(第一の実施形態)
電池ブロックは、電池ケースと複数の単電池とを有する。電池ケースは、複数のパイプ状部材を有し、各パイプ状部材の中空部に、単電池が収容されている。電池ブロックに含まれる単電池は蓄電性能を有していてもよく、その場合には、電池ブロックは高容量または高出力の蓄電池として機能する。
図7に示すように、第二の実施形態に係る電池ブロック100-4は、(イ)互いに接合または接着された複数の金属製パイプ状部材を含む電池ケース30,30-2と、(ロ)複数の金属製パイプ状部材30,30-2のそれぞれの内部に収容された単電池40と、(ハ)金属製パイプ状部材30,30-2の内壁面または外壁面を覆う絶縁層80-4,80-5と、を含む。
図7に示すように、少なくとも電池ブロック100-4の外周部に配置される金属製パイプ状部材30-2は、側面端部に切り欠き36を有する。内壁面と単電池との間に形成された隙間(80-4)から、切り欠き36を介して、外壁面にまで連続する絶縁層80-5が配置されている。切り欠き36を介して、内壁面と単電池との間に形成された絶縁層80-4と電池ブロック100-4の外周部に形成された絶縁層80-5が一体に形成されている。そのため電池ブロック同士の絶縁が確実になる。電池ブロックの外周部に配置された金属製パイプ状部材同士を、絶縁層を用いて一体に形成することで、複数の金属製パイプ状部材同士が強固に固定されている。
なお、ここでは、金属製パイプ状部材30-2を用いたが、図4Aに示すような、側面に貫通口35を有する金属製パイプ状部材30-1を用いても構わない。
なお、絶縁層は、金属製パイプ状部材の内壁面を覆い、単電池と金属製パイプ状部材とは接触しないことが好ましい。
電池ブロックの製造方法は、1)複数のパイプ状部材を含む電池ケースに単電池を収容してから、絶縁層を形成する態様と、2)複数のパイプ状部材を含む電池ケースに絶縁層を形成してから、単電池を収容する態様と、に大別される。
1)電池ケースのパイプ状部材に単電池を収容してから絶縁層を形成する場合:
単電池を収容してから絶縁層を形成する場合には、単電池内部の樹脂部品の軟化を防ぐために、130℃以下、好ましくは80℃以下の条件で絶縁層を形成することが好ましい。絶縁層の形成の具体的な手法の例には、a)複数のパイプ状部材を含む電池ケースの外壁面に樹脂フィルムを巻きまわすか、または樹脂を塗布して硬化させるか、b)単電池を収容した電池ケースのパイプ状部材の内部に樹脂を注入して硬化させる。
単電池を収容する前に絶縁層を形成する場合には、c)複数のパイプ状部材を含む電池ケースの外壁面に樹脂フィルムを巻きまわすか、または樹脂を塗布して加熱硬化するか、d)電池ケースのパイプ状部材の内壁面に樹脂を塗布して硬化させればよい。
なお、ここでは1工程で複数の金属製パイプ状部材30-2の内壁面や外壁面を絶縁性樹脂で覆う塗布方法を説明したが、各金属製パイプ状部材30-2毎に、絶縁層80-4、80-5となる絶縁性樹脂を塗布しても構わない。(ニ)電池ブロック100-4の外周部に絶縁性樹脂が配置されたところで、絶縁性樹脂を加熱硬化させて、絶縁層80-4、80-5を形成する。その後型枠39-2を外す。以上により、図7に示すような実施形態に係る電池ブロック100-4が製造される。
以上、第二の実施形態に係る電池ブロックの製造方法によれば、簡易に、電池ブロック100-4の外周部に絶縁性樹脂80-5を配置することができる。
本出願は、同出願人により先にされた日本国特許出願、すなわち、特願2011-120469号(出願日2011年5月30日)に基づく優先権主張を伴うものであって、これらの明細書の内容を参照して本発明の一部としてここに組み込むものとする。
20 ホルダー
30,30-1,30-2 パイプ状部材
35 貫通口
36 切り欠き
39 枠体
40 単電池
41 電極
42 電極
50 ホルダー
60 電極板
80-1,80-2,80-3,80-4,80-5 絶縁層
100,100-1,100-2,100-3,100-4 電池ブロック
Claims (12)
- 互いに接合または接着された複数の金属製パイプ状部材を含む電池ケースと、
前記複数の金属製パイプ状部材のそれぞれの内部に収容された単電池と、
前記金属製パイプ状部材の内壁面または外壁面を覆う絶縁層と、を含む電池ブロックであって、
少なくとも前記電池ブロックの外周部に配置される前記金属製パイプ状部材は、側面に貫通口または側面端部に切り欠きを有し、前記内壁面と前記単電池との間に形成された隙間から、前記貫通孔または前記切り欠きを介して、前記外壁面にまで連続する前記絶縁層が配置されている電池ブロック。 - 前記絶縁層は、さらに前記複数の金属製パイプ状部材の外壁面間に形成された隙間に配置されている、請求項1に記載の電池ブロック。
- 前記絶縁層は、さらに前記電池ブロックの内側に配置された前記金属製パイプ状部材において、前記内壁面と前記単電池との間に形成された隙間から、前記貫通孔または前記切り欠きを介して、前記外壁面にまで連続して配置されている、請求項1に記載の電池ブロック。
- 前記絶縁層は、前記金属製パイプ状部材の内壁面を覆い、
前記単電池と前記金属製パイプ状部材とは接触しない、請求項1に記載の電池ブロック。 - 前記電池ケースは、前記複数の金属製パイプ状部材を囲む金属製枠体をさらに有する、請求項1に記載の電池ブロック。
- 互いに接合または接着された複数の金属製パイプ状部材を含む電池ケースを用意するステップと、
前記複数の金属製パイプ状部材の内部に単電池を収容するステップと、
前記複数の金属製パイプ状部材の内壁面または外壁面を絶縁層で覆うステップと、を含む、電池ブロックの製造方法であって、
少なくとも前記電池ブロックの外周部に、側面に貫通口または側面端部に切り欠きを有する金属製パイプ状部材を配置し、
前記内壁面と前記単電池との間に形成された隙間から、前記貫通孔または前記切り欠きを介して、前記外壁面にまで連続する前記絶縁層を配置する、電池ブロックの製造方法。 - 前記絶縁層の形成は、130℃以下で行う、請求項6に記載の電池ブロックの製造方法。
- 前記絶縁層の形成は、前記金属製パイプ状部材の外壁面に、樹脂フィルムをまき回すかまたは樹脂を塗布して硬化させる、請求項6に記載の電池ブロックの製造方法。
- 前記絶縁層の形成は、前記単電池が収容された金属製パイプ状部材の内部に樹脂を注入して硬化させ、前記金属製パイプ状部材の内壁面と前記単電池との隙間に絶縁層を形成する、請求項6に記載の電池ブロックの製造方法。
- 互いに接合または接着された複数の金属製パイプ状部材を含む電池ケースを用意するステップと、
前記電池ケースの外壁面または内壁面に絶縁層を形成するステップと、
前記電池ケースの前記金属製パイプ状部材の内部に単電池を収容するステップと、を含む、電池ブロックの製造方法。 - 前記絶縁層の形成は、前記電池ケースの外壁面または前記金属製パイプ状部材の内壁面に樹脂を塗布して硬化させて、絶縁層を形成する、請求項10に記載の電池ブロックの製造方法。
- 前記絶縁層の形成は、前記電池ケースの外壁面または前記金属製パイプ状部材の内壁面に絶縁性の酸化物層を形成する、請求項10に記載の電池ブロックの製造方法。
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Also Published As
Publication number | Publication date |
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US9236585B2 (en) | 2016-01-12 |
CN103563124B (zh) | 2016-08-17 |
CN103563124A (zh) | 2014-02-05 |
US20140045037A1 (en) | 2014-02-13 |
JP5221820B1 (ja) | 2013-06-26 |
JPWO2012164923A1 (ja) | 2015-02-23 |
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