WO2020179355A1 - Bloc-batterie - Google Patents

Bloc-batterie Download PDF

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Publication number
WO2020179355A1
WO2020179355A1 PCT/JP2020/004889 JP2020004889W WO2020179355A1 WO 2020179355 A1 WO2020179355 A1 WO 2020179355A1 JP 2020004889 W JP2020004889 W JP 2020004889W WO 2020179355 A1 WO2020179355 A1 WO 2020179355A1
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WO
WIPO (PCT)
Prior art keywords
battery
cell
inter
heat medium
pair
Prior art date
Application number
PCT/JP2020/004889
Other languages
English (en)
Japanese (ja)
Inventor
雅貴 内山
柴田　大輔
高広 左右木
啓善 山本
Original Assignee
株式会社デンソー
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 株式会社デンソー filed Critical 株式会社デンソー
Publication of WO2020179355A1 publication Critical patent/WO2020179355A1/fr

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Classifications

    • 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
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • 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
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • 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
    • H01M10/61—Types of temperature control
    • H01M10/615—Heating or keeping warm
    • 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
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • 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
    • H01M10/647—Prismatic or flat cells, e.g. pouch cells
    • 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
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
    • 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
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561—Gases
    • H01M10/6563—Gases with forced flow, e.g. by blowers
    • H01M10/6565—Gases with forced flow, e.g. by blowers with recirculation or U-turn in the flow path, i.e. back and forth
    • 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
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • 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
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6569—Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation
    • 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

  • This disclosure relates to an assembled battery.
  • Patent Document 1 discloses a battery module including a plurality of battery cells and a heat exchanger having a heat exchange unit that exchanges heat with the battery cells.
  • the heat exchanger is a flat pipe having a plurality of heat exchange parts adjacent to the battery cell and a plurality of hairpin parts connecting the adjacent heat exchange parts, and forms a meandering flow path as a whole.
  • Patent Document 2 discloses an energy storage device including a cooling bladder having a serpentine shape as in Patent Document 1.
  • the cooling bladder is a flat pipe having a plurality of heat exchange parts adjacent to the battery cells and a plurality of right-angled bends connecting the adjacent heat exchange parts, and forms a meandering flow path as a whole.
  • Patent Document 1 the protruding length of the hairpin portion protruding from the side surface of the battery cell is large, which is one of the reasons for increasing the size of the assembled battery.
  • Patent Document 2 in a restrained state in which a plurality of battery cells and a cooling bladder are in close contact with each other, a load due to a right-angled bent portion of the cooling bladder acts on a corner portion of the battery cell or the like to easily generate stress.
  • An object of the present disclosure is to provide an assembled battery capable of suppressing stress generated in a battery cell and suppressing physique.
  • An assembled battery includes a battery stack including a plurality of battery cells that are stacked and installed, and a heat medium passage member that is provided so as to exchange heat between a heat medium flowing through an internal passage and a battery cell. Equipped with.
  • the heat medium passage member is an inter-cell portion in which heat exchange between the heat medium and the battery cells that are present between the battery cells and the battery cells adjacent to each other in the stacking direction exchange heat, and a cell portion and a cell adjacent to each other in the stacking direction. It has a connecting portion that connects to the intervening portion and projects outward from the battery cell, and a connecting portion through which the heat medium flows.
  • the connecting portion has three bends.
  • the three bends are, for example, different curved portions having at least two protrusions or recesses.
  • the three bent portions are, for example, between a pair of first bent portions formed so that a portion apart from the inter-cell portion gradually approaches the inter-cell portion side portion, and between the pair of first bent portions.
  • a pair of second bent portions that bulge outward at a position more distant from the inter-cell portion than the first bent portion, and a part of a portion that connects the pair of second bent portions to the second bent portion.
  • a third bend that is recessed toward the cell.
  • the connecting portion connecting the adjacent inter-cell portions includes a pair of first bent portions formed so that the portions separated from the inter-cell portions gradually approach each other.
  • the pair of first bends has a shape in which the inter-cell portion and the first bend form an angle larger than a right angle, and the pair of first bends gradually approach each other toward the second bend. is there. Therefore, the connecting portion can suppress the load applied to the corner portion of the battery cell adjacent to the inter-cell portion, and can alleviate the stress concentration in the battery cell.
  • the connecting portion is provided with a third bent portion that is recessed toward the battery cell side between a pair of second bent portions that bulge outward with respect to the battery cell rather than the first bent portion.
  • the third bent portion contributes to suppressing the amount of protrusion of the connecting portion with respect to the battery cell between the pair of second bent portions. Based on the above, it is possible to provide an assembled battery capable of suppressing stress generated in a battery cell and suppressing physique.
  • the drawing is It is a perspective view of the assembled battery of 1st Embodiment. It is a top view of an assembled battery. It is a side view of an assembled battery. It is a perspective view of a heat carrier passage member with which an assembled battery is provided. It is a top view of a heat carrier passage member. It is a perspective view showing a section of a heat carrier passage member.
  • FIG. 6 is a partial view showing a folded portion and a battery cell in the heat medium passage member. It is a partial view showing a state before applying a compressive load to the heat medium passage member and the jig.
  • FIG. 8 is a partial view showing a state after applying a compressive load to the heat medium passage member and the jig.
  • FIG. 8 is a partial view showing a heat medium passage member and a battery cell in the second embodiment. It is a partial view showing a heat carrier passage member and a battery cell about a 3rd embodiment. It is sectional drawing which showed the passage cross section about the heat medium passage member of 4th Embodiment. It is sectional drawing which showed the passage cross section about the heat medium passage member of 5th Embodiment. It is sectional drawing which showed the passage cross section about the heat medium passage member of 6th Embodiment. It is sectional drawing which showed the passage cross section about the heat medium passage member of 7th Embodiment.
  • the assembled battery 1 is a device including a battery laminate 10 having a plurality of battery cells 2, restraint bands 5 and 6 that restrain and support the battery laminate 10 in the stacking direction, and a heat medium passage member 4.
  • the assembled battery 1 is mounted on an electric vehicle such as a hybrid vehicle in which an internal combustion engine and a motor driven by electric power charged in the battery are combined and used as a traveling drive source, and an electric vehicle in which the motor is used as a traveling drive source.
  • the plurality of battery cells 2 included in the assembled battery 1 are, for example, a nickel hydrogen secondary battery, a lithium ion secondary battery, an organic radical battery, an all-solid-state battery, and the like.
  • the thickness direction of the battery cells 2 is the stacking direction of the battery cells 2 in the battery stack 10 and is also referred to as the battery stacking direction.
  • the direction orthogonal to both the stacking direction and the height direction is the width direction or the lateral direction of the battery cell 2.
  • the assembled battery 1 is controlled by electronic components used for charging and discharging or temperature control of a plurality of battery cells 2.
  • the assembled battery 1 is formed by constraining a plurality of battery cells 2 that are connected to each other so that they can be energized and that are stacked and installed in the stacking direction, to be integrated.
  • the assembled battery 1 may be stored in the housing.
  • the aforementioned electronic components are, for example, a DC/DC converter, a motor that drives a fluid drive device that causes a heat medium to flow, an electronic component that is controlled by an inverter, various electronic control devices, and the like.
  • the assembled battery 1 may be configured as a device including such an electronic component.
  • the battery cell 2 constituting the battery laminate 10 is a single battery having a square outer case.
  • the prismatic unit cell has a rectangular parallelepiped shape whose outer peripheral surface is covered by an outer case made of, for example, aluminum or an aluminum alloy.
  • each of the two electrode terminals 20 including the positive electrode terminal and the negative electrode terminal protrudes from the upper surface 21 of the outer case.
  • the protruding direction of the electrode terminal 20 is an upward direction perpendicular to the battery stacking direction.
  • the outer case of the battery cell 2 may be made of resin in addition to metal, for example.
  • the battery cell 2 may include a film in which resin and aluminum foil are laminated as an outer case.
  • the battery stack 10 is an assembly in which a predetermined number of battery cells 2 and inter-cell portions 44 of the heat medium passage member 4 are stacked alternately. This assembly is integrally formed by a restraining force directed inward by being sandwiched by a pair of end plates 3 from both ends in the stacking direction.
  • the end plate 3 is formed in a flat box whose thickness direction dimension is smaller than the vertical length and the width direction length.
  • the assembled battery 1 is a device having a function of exchanging heat between a plurality of battery cells 2 that are stacked and installed, and a heat medium that flows through the internal passages of the heat medium passage member 4.
  • the heat medium is a temperature control fluid whose temperature can be adjusted in the battery cell 2 by cooling or heating.
  • the heat medium may be a gas, a liquid, or a gas-liquid mixed fluid, or a fluid that does not change its state during use, or a fluid that changes the phase.
  • the assembled battery 1 includes a heat medium passage member 4 integrally installed with the plurality of battery cells 2.
  • the heat medium passage member 4 is formed of a material having thermal conductivity, for example, a metal containing aluminum, a metal containing copper, a resin material containing metal, a carbon resin material, or the like.
  • the restraint band 5 and the restraint band 6 provide a restraining force that compresses a set of end plates 3 from both sides.
  • Each of the restraint band 5 and the restraint band 6 is a strip-shaped member that supports the outer surface of the stack of the battery stack 10 and the pair of end plates 3.
  • Each of the restraining bands 5 and 6 is fixed to the pair of end plates 3 by rivets so that the restraining bands 5 and 6 can maintain a state of providing a compressive force to the battery stack 10.
  • the end plate 3 includes an upper surface, a lower surface facing the upper surface, a pair of side surfaces, an inner width surface facing the adjacent battery cells 2, and an outer width surface facing the inner width surface.
  • a set of side surfaces are vertically elongated surfaces adjacent to the top and bottom surfaces. Further, the rivet can be replaced with a fixing means such as bolts and nuts and screws, and a fixing means such as welding.
  • Each of the restraining bands 5 and 6 is formed of a material having excellent strength such as a metal or a hard resin material so that the plurality of battery cells 2 and the like can be pressed and integrated with a stable force.
  • the restraint band 5 and the restraint band 6 are common in that they give a restraining force that compresses the battery laminate 10 in the stacking direction.
  • the restraint band 5 and the restraint band 6 have different restraint portions in the battery laminate 10.
  • the restraint band 5 includes a band-shaped portion 50 bridging over the entire stacking direction with respect to the side wall of the battery stack 10 along the stacking direction and the height direction.
  • the band-shaped portion 50 is separated from the battery laminate 10.
  • the restraint band 5 includes fixing portions 51 located at both ends of the band-shaped portion 50.
  • the fixing portion 51 is a portion where the restraint band 5 is fixed to the assembled battery 1.
  • the fixing portion 51 is a plate-shaped portion that extends orthogonally to the belt-shaped portion 50 at both ends of the belt-shaped portion 50 in the longitudinal direction.
  • the restraint band 5 maintains the state in which the fixing portion 51 is fixed to each end plate 3 by a rivet or the like, thereby providing a necessary restraining force to the battery stack 10.
  • the fixed portion 51 is fixed to the lower portion of each end plate 3.
  • the assembled battery 1 includes at least two restraint bands 5.
  • the restraint band 5 has a band-shaped portion 50 that faces each of the faces forming the battery stack 10, which face each other.
  • the set of restraint bands 5 is a first restraint band that covers the opposing surface of the lower portion of the battery stack 10 over the length in the stacking direction.
  • the strip portion 50 covers a part of the side surface 23 of the battery cell 2 included in the battery stack 10 and is arranged over the entire length of the battery stack 10 in the stacking direction.
  • the band-shaped portion 50 covers a portion of the side wall of the battery laminate 10 that does not interfere with the heat medium passage member 4 from the outside.
  • the strip-shaped portion 50 is installed on the side wall of the battery stack 10 at a position lower than the heat medium passage member 4 and away from the restraining band 6.
  • the restraint band 5 is installed on the side wall of the battery stack 10 in the lower part of the side wall of the battery stack 10 that is farthest from the upper wall of the battery stack 10 supported by the restraint band 6 and is closer to the lower wall.
  • the set of restraint bands 5 extends over the entire length in the stacking direction on the set of side walls facing each other in the battery stack 10. Therefore, the restraint band 5 reinforces the battery stack 10 so as to suppress the movement of the end portion in the stacking direction warping with respect to the central portion.
  • the restraint band 5 also contributes to suppressing displacement of the electrode terminals 20 in the width direction, and contributes to ensuring the quality of electrical components such as bus bars that connect the electrode terminals 20 to each other.
  • the restraint band 5 contributes to the improvement of the strength of the battery stack 10 with respect to an external force such that the end portion in the stacking direction of the facing surface of the battery stack 10 warps in the width direction with respect to the central portion.
  • the restraint band 6 includes a band-shaped portion 60 that is bridged to the upper wall of the battery stack 10 along the stacking direction and the width direction over the entire stacking direction.
  • the band-shaped portion 60 is separated from the battery laminate 10.
  • the restraint band 6 includes fixing portions 61 located at both ends of the band-shaped portion 60.
  • the fixing portion 61 is a portion where the restraint band 6 is fixed to the assembled battery 1.
  • the fixing portion 61 is a plate-shaped portion that extends so as to be orthogonal to the belt-shaped portion 60 at both ends of the belt-shaped portion 60 in the longitudinal direction.
  • the restraint band 6 maintains the state in which the fixed portion 61 is fixed to each end plate 3 by a rivet or the like, thereby providing a necessary restraint force to the battery stack 10.
  • the fixed portion 61 is fixed to the upper portion of each end plate 3.
  • the assembled battery 1 includes at least two restraint bands 6.
  • the restraint band 6 has a strip-shaped portion 50 facing the surface adjacent to the side wall among the surfaces forming the battery stack 10.
  • the set of restraint bands 6 is a second restraint band that covers the facing surface of the upper portion of the battery stack 10 over the length in the stacking direction.
  • the strip-shaped portion 60 covers a part of the upper surface 21 of the battery cell 2 included in the battery stack 10 and is arranged over the entire length of the battery stack 10 in the stacking direction.
  • the band-shaped portion 50 covers a portion of the upper wall of the battery laminate 10 that does not interfere with the electrode terminals 20 from the outside.
  • the strip-shaped portion 60 is provided on the upper wall of the battery stack 10 at a position closer to the end portion in the width direction than the electrode terminal 20. Further, the strip-shaped portion 60 may be configured to cover a portion between the electrode terminal 20 and the electrode terminal 20 on the upper wall of the battery stack 10.
  • a set of restraint bands 6 extends over the entire length in the stacking direction on the upper wall of the battery stack 10. Therefore, the restraint band 6 reinforces the battery stack 10 so as to suppress the movement of the end portion in the stacking direction warping with respect to the central portion.
  • the restraint band 6 also contributes to suppressing the vertical displacement of the electrode terminal 20, and contributes to ensuring the quality of electrical components such as a bus bar that connects the electrode terminal 20 and the electrode terminal 20.
  • the restraint band 6 covers both ends in the width direction on the upper wall of the battery laminate 10. Therefore, it contributes to both the displacement suppression of the electrode terminal 20 located on the side closer to one side wall and the displacement suppression of the electrode terminal 20 located on the side closer to the other side wall.
  • the restraint band 6 contributes to the improvement of the strength of the battery stack 10 against an external force such that the end in the stacking direction warps in the vertical direction with respect to the central part.
  • the restraint band 6 may be configured to adjoin the side walls covered by the restraint band 5 and to cover a part of the lower wall of the battery stack 10 that is a surface facing each other and extending along the width direction and the stacking direction. Further, the battery pack 1 may have a configuration having a restraining band 6 provided so as to cover not only one of the upper wall and the lower wall but also a part of both.
  • the heat medium passage member 4 includes a first passage portion 4a and a second passage portion 4b.
  • the first passage portion 4a has an internal passage through which the heat medium flows down from one side to the other side in the stacking direction.
  • the second passage portion 4b has an internal passage through which the heat medium flows down from the other side in the stacking direction to one side.
  • the first passage portion 4a and the second passage portion 4b are connected by a relay portion 41 provided at the other end.
  • the first passage portion 4a has an inflow portion 40 at one end.
  • the second passage portion 4b has an outflow portion 42 at one end.
  • the first passage portion 4a is located above the heat medium passage member 4.
  • the second passage portion 4b is located on the lower side.
  • the first passage portion 4a and the second passage portion 4b are arranged so as to overlap each other. As shown in FIG. 6, the first passage portion 4a and the second passage portion 4b have a plurality of passages inside. In this case, a flat multi-hole pipe manufactured by extrusion molding can be used for the first passage portion 4a and the second passage portion 4b.
  • the first passage portion 4a and the second passage portion 4b are provided with a plurality of inter-cell portions 44 interposed between the battery cells 2 adjacent to each other in the stacking direction.
  • a heat medium circulates in the internal passage of the inter-cell portion 44.
  • the plurality of inter-cell portions 44 are arranged so as to be aligned in the stacking direction.
  • a space equal to the thickness dimension of the battery cell 2 in the stacking direction is provided between the cell stacks 44 and the cell stacks 44 that are adjacent to each other in the stacking direction.
  • the inter-cell portion 44 is installed in contact with the width surface 22 of the battery cell 2 having a surface in the width direction and the vertical direction.
  • the width surface 22 is also the largest surface in the battery cell 2.
  • a spacer member having thermal conductivity may be interposed between the battery cell 2 and the inter-cell portion 44 so that the spacer member is sandwiched between the battery cell 2 and the inter-cell portion 44.
  • the first passage portion 4a and the second passage portion 4b are provided with the inter-cell portions 44 that are adjacent to each other in the stacking direction and the coupling portions 43 that connect the inter-cell portions 44.
  • the connecting portion 43 is provided over the entire height direction of the heat medium passage member 4. A heat medium circulates in the internal passage of the connecting portion 43.
  • the connecting portion 43 is provided so as to be located outside the battery cell 2 in the width direction of the battery cell 2.
  • the connecting portion 43 is provided outside so as to face the side surface 23 of the battery cell 2 that is orthogonal to both the upper surface 21 and the width surface 22.
  • the connecting portion 43 is a turn portion that is also a turn portion, in which the heat medium that flows inside the heat medium passage member 4 is turned back to change the direction of the flow and form turn-back passages that face each other.
  • the connecting portion 43 is a folding portion that changes the direction of the flow path in the opposite direction.
  • At least one connecting portion 43 is provided in each of the first passage portion 4a and the second passage portion 4b.
  • the first passage portion 4a and the second passage portion 4b form a meandering passage as shown in FIG. 2, FIG. 4 and FIG. 5 by continuously stacking the folded passage through the connecting portion 43. There is.
  • the connecting portion 43 is a portion that connects two inter-cell portions 44 that are adjacent to each other in the stacking direction via the battery cell 2 outside the battery cell 2 and is separated from the side surface 23.
  • the connecting portion 43 is provided so as to protrude from the battery cell 2.
  • the connecting unit 43 has a unique structure capable of achieving the purpose of disclosure in the specification.
  • the connecting portion 43 is a portion formed by bending the heat medium passage member 4.
  • the connecting portion 43 includes a pair of first bending portions 432, a pair of second bending portions 433, and a third bending portion 431.
  • the first bent portion 432 is a portion that extends to the outside of the battery cell 2 from each of the two inter-cell portions 44 that are adjacent to each other in the stacking direction with the battery cell 2 interposed therebetween.
  • the first bent portion 432 is not a portion bent at a right angle to the inter-cell portion 44, but has a curved shape.
  • the first bent portion 432 is bent so as to approach the other inter-cell portion 44 connected by the connecting portion 43 with respect to the axis of the inter-cell portion 44 shown by the two-dot chain line in FIG. 7.
  • the first bent portion 432 is bent so that the tangent line of the first bent portion 432 and the axis of the inter-cell portion 44 form an obtuse angle so as to approach the other inter-cell portion 44.
  • the connecting portion 43 includes a pair of first bending portions 432 extending from the two adjacent cell-to-cell portions 44 to the outside of the battery cell 2 at both ends in the stacking direction. Further, the pair of first bent portions 432 are formed so as to gradually approach each other as the distance from the inter-cell portion 44 increases. The first bent portion 432 is provided over the entire height direction of the connecting portion 43.
  • first bent portion and the inter-cell portion form a right angle or an acute angle
  • a load is generated where the end portion of the first bent portion or the inter-cell portion pushes the corner portion of the adjacent battery cell 2. Due to such a load, stress is likely to be generated at the corners of the battery cell as described above in Patent Document 2. Since the first bent portion 432 has an obtuse angle with the inter-cell portion 44, the first bent portion 432 and the end portion of the inter-cell portion have the effect of reducing the load pushing the corner portion of the adjacent battery cell 2. ..
  • the second bent portion 433 is a protruding portion that bulges outside the battery cell 2 from each of the pair of first bent portions 432.
  • the second bent portion 433 is a portion of the connecting portion 43 that is most distant from the side surface 23 of the battery cell 2.
  • the second bent portion 433 is not a portion bent at a right angle to the first bent portion 432, but has a curved shape like the first bent portion 432.
  • the second bent portion 433 is a portion of the connecting portion 43 that changes its direction from the first bent portion 432 to the third bent portion 431.
  • the second bent portion 433 is provided over the entire height direction of the connecting portion 43.
  • a part extending from the second bent portion 433 to the third bent portion 431 is close to another inter-cell portion 44 connected by the connecting portion 43 to the axis line of the inter-cell portion 44.
  • the portion extending from the second bent portion 433 to the third bent portion 431 is an angle that forms an acute angle with the axis of the inter-cell portion 44 and is close to the other inter-cell portion 44 or the battery cell 2.
  • the third bent portion 431 is a portion connecting a pair of second bent portions 433.
  • the third bent portion 431 is a portion that is recessed so as to approach the battery cell 2 with respect to the second bent portions 433 located on both sides.
  • the third bent portion 431 is provided over the entire height direction of the connecting portion 43.
  • the connecting portion 43 is formed in a corrugated shape in which the pair of first bending portions 432, the pair of second bending portions 433, and the third bending portion 431 are integrally curved.
  • the manufacturing process of the heat medium passage member 4 includes the first step to the third step described below.
  • a flat tube is prepared.
  • the flat tube is processed so that the connecting portion 43 and the inter-cell portion 44 are formed as shown in FIG.
  • the third step is a step of forming the meandering tube after the second step into a final shape that can be mounted on the battery stack 10.
  • the jig 11 is used to form a meandering tube so that the distance between the two adjacent cell-cell portions 44 in the stacking direction is equal to the thickness dimension of the battery cell 2.
  • FIG. 8 shows a state before applying a compressive load to the heat medium passage member 4 and the jig 11.
  • a compressive load in the stacking direction is applied to the integrated body in which the jig 11 having the same thickness dimension as the battery cell 2 is installed between the inter-cell portions 44.
  • the connecting portion 43 is deformed so that the unevenness difference between the third bent portion 431 and the second bent portion 433 becomes larger than that in the state shown in FIG.
  • the gap between the two inter-cell portions 44 adjacent to each other in the stacking direction is deformed so as to approach the thickness dimension of the battery cell 2 as compared with the state shown in FIG.
  • the heat medium passage member 4 manufactured through the above steps is assembled to the battery stack 10 in a state in which the restraining bands 5 and 6 exert a restraining force in the stacking direction.
  • the first passage portion 4a is provided with an inflow portion 40 into which the heat medium flows in the laminating direction of the folded flow path, that is, one end portion in the laminating direction.
  • the inflow section 40 is coupled to the inflow connector section 400.
  • the inflow portion 40 is an inflow portion into which the heat medium from the outside of the battery pack 1 flows into the heat medium passage member 4 via the inflow connector portion 400.
  • a pipe for introducing a heat medium from the outside of the assembled battery 1 is connected to the inflow connector portion 400.
  • the inflow portion 40 communicates with the internal passage of the inter-cell portion 44 located at the upstream end of the heat medium passage member 4, which is one end in the stacking direction. This internal passage is provided so that heat can be transferred to the battery cell 2 at one end so that the heat medium and the upper part of the battery cell 2 located at one end of the battery stack 10 exchange heat. ..
  • the first passage portion 4a communicates with the upper part of the relay portion 41 at the other end portion in the stacking direction.
  • the second passage portion 4b communicates with the lower portion of the relay portion 41 at the other end portion in the stacking direction.
  • the relay portion 41 forms an internal space in which the heat medium moves from the first passage portion 4a to the second passage portion 4b and flows in the opposite direction.
  • the internal passage of the relay portion 41 communicates with the internal passage of the inter-cell portion 44 located at the other end of the first passage portion 4a in the stacking direction on the downstream side. This internal passage is provided so that heat can be transferred to the battery cell 2 at the other end so that the heat medium and the upper part of the battery cell 2 located at the other end of the battery stack 10 exchange heat. ..
  • the internal passage of the relay portion 41 communicates with the internal passage of the inter-cell portion 44 located at the other end of the second passage portion 4b in the stacking direction on the upstream side.
  • This internal passage is provided so that heat can be transferred to the battery cell 2 at the other end so that the heat medium and the lower part of the battery cell 2 located at the other end of the battery stack 10 exchange heat. ..
  • the second passage portion 4b includes an outflow portion 42 through which the heat medium flows out from one end in the stacking direction.
  • the outflow portion 42 is coupled to the outflow connector portion 420.
  • the outflow portion 42 is an outflow portion through which the heat medium flows out of the heat medium passage member 4 to the outside of the battery pack 1 via the outflow connector portion 420.
  • a pipe for discharging the heat medium to the outside of the assembled battery 1 is connected to the outflow connector portion 420.
  • the outflow portion 42 communicates with the internal passage of the inter-cell portion 44, which is one end portion in the stacking direction and is located at the downstream end portion of the heat medium passage member 4. This internal passage is provided so that heat can be transferred to the battery cell 2 at one end so that the heat medium and the lower portion of the battery cell 2 located at one end of the battery laminate 10 exchange heat. There is.
  • the first passage portion 4a and the second passage portion 4b are flat tubes elongated in the up-down direction orthogonal to both the width direction, which is the flow direction when the heat medium exchanges heat with the battery cells 2, and the stacking direction.
  • the first passage portion 4a and the second passage portion 4b can be formed by a serpentine pipe obtained by bending the flat pipe.
  • the heat medium flows into the upper serpentine tube from the inflow portion 40 at the upper end of one end, and meanders through the inter-cell portions 44 in the upper half, and flows into the upper portion of the relay portion 41 at the other end.
  • the first passage portion 4a forms a flow path that meanders from one end portion to the other end portion along the upper half of the battery cell 2.
  • the heat medium further flows down from the upper part to the lower part in the relay part 41, and flows from the lower part in the relay part 41 into the lower serpentine tube. Further, the heat medium flows down while meandering through the inter-cell portions 44 in the lower half, and then flows out from the outflow portion 42 at the lower part of the one end.
  • the second passage portion 4b forms a flow path that meanders from the other end portion to the one end portion along the lower half of the battery cell 2.
  • the heat of the battery cells 2 is absorbed by the heat medium through the inter-cell portion 44, and each battery cell 2 can be cooled. Further, when the heat medium flows through the internal passage through the heat medium passage member 4, the heat of the heat medium can be dissipated to the battery cells 2 via the inter-cell portion 44 to heat each battery cell 2.
  • the assembled battery 1 exchanges heat with the battery cells 2 in all the inter-cell portions 44 arranged in the stacking direction until the heat medium flowing from the inflow portion 40 of the heat medium passage member 4 reaches the outflow portion 42.
  • the first passage portion 4a may have the following configuration.
  • the upstream inter-cell portion 44 located at one end and the downstream inter-cell portion 44 located at the other end may be connected without the inter-cell portion 44 interposed therebetween.
  • the inter-cell portion 44 at one end and the inter-cell portion 44 at the other end are connected by a connecting portion 43.
  • the inter-cell portion 44 at one end and the inter-cell portion 44 at the other end may be connected via an inter-cell portion 44 partially provided in the battery laminate 10.
  • the inter-cell portion 44 at one end and the inter-cell portion 44 at the other end are in communication so that the heat medium flows down from the one end to the other end in the internal passage. ..
  • the second passage portion 4b may have the following configuration.
  • the upstream inter-cell portion 44 located at the other end and the downstream inter-cell portion 44 located at the one end may be connected without the inter-cell portion 44 interposed therebetween.
  • the cell-to-cell portion 44 at the other end and the cell-to-cell portion 44 at the one end are connected by a connecting portion 43.
  • the inter-cell portion 44 at the other end and the inter-cell portion 44 at the one end may be connected via the inter-cell portion 44 partially provided in the battery stack 10. In such a configuration, the inter-cell portion 44 at the other end and the inter-cell portion 44 at one end communicate with each other so that the heat medium flows down the internal passage from the other end to one end.
  • the assembled battery 1 includes a battery stack 10 including a plurality of battery cells 2, and a heat medium passage member 4 provided so as to exchange heat between the heat medium flowing through the internal passages and the battery cells 2.
  • the heat medium passage member 4 has an inter-cell portion 44 interposed between battery cells 2 adjacent to each other in the stacking direction, and a connecting portion 43 connecting two inter-cell portions 44 adjacent to each other in the stacking direction.
  • the connecting portion 43 is a portion that protrudes outward from the battery cell 2 and a heat medium flows inside the connecting portion 43.
  • the connecting portion 43 includes a pair of first bending portions 432, a pair of second bending portions 433, and a third bending portion 431.
  • the pair of first curved portions 432 is formed such that the portion away from the inter-cell portion 44 gradually approaches the portion on the inter-cell portion 44 side.
  • the pair of second bent portions 433 bulges outward at a position further apart from the inter-cell portion 44 than the first bent portion 432 between the pair of first bent portions 432.
  • the third bent portion 431 is a part of a portion connecting the pair of second bent portions 433 and is recessed with respect to the second bent portion 433 so as to approach the battery cell 2.
  • the connecting portion 43 that connects the adjacent inter-cell portions 44 includes the pair of first bending portions 432 that are formed so that the portions apart from the inter-cell portions 44 gradually approach each other.
  • the inter-cell portion 44 and the first curved portion 432 form an angle larger than a right angle.
  • the pair of first curved portions 432 has a shape in which the pair of first curved portions 432 gradually approaches each other and extends to the second curved portion 433. Therefore, the connecting portion 43 can suppress the load applied to the corner portion of the battery cell 2 adjacent to the inter-cell portion 44, so that the stress concentration in the battery cell 2 can be relaxed.
  • the connecting portion 43 is provided with a third bent portion 431 which is recessed inward toward the battery cell between the pair of second bent portions 433.
  • the third bent portion 431 contributes to suppressing the protruding size of the connecting portion 43 with respect to the battery cell 2 between the pair of second bent portions 433. Since the volume between the connecting portion 43 and the outer surface of the battery cell 2 can be suppressed, the dead space in the battery pack 1 can be reduced. As described above, the assembled battery 1 can suppress the stress generated in the battery cell 2 and suppress the physique.
  • the connecting portion 43 is formed in a corrugated shape in which the pair of first bending portions 432, the pair of second bending portions 433, and the third bending portion 431 are curved in one connection. According to this configuration, since the entire connecting portion 43 is formed in a curved wave shape, there are no corners or the like in the connecting portion 43, so that stress concentration generated in each bent portion can be suppressed. .. Accordingly, it is possible to provide the assembled battery 1 that can suppress the load applied to the connecting portion 43 when forming the bent portion and can suppress the flow path resistance in the internal passage of the connecting portion 43.
  • the assembled battery 1 includes restraint bands 5 and 6 that apply a binding force to the battery laminate 10 and the inter-cell portion 44 in the stacking direction.
  • the restraining bands 5 and 6 compress the pair of first bending portions 432, the pair of second bending portions 433 and the third bending portion 431 in the stacking direction via the inter-cell portion 44.
  • the restraining bands 5 and 6 apply a compressive force to all the bent portions by compressing the battery cell 2 and the inter-cell portion 44 in the stacking direction.
  • the third bending portion 431 is compressed via the pair of second bending portions 433 on both sides, and the compressive force for deforming the third bending portion 431 to approach the battery cell 2 continues to act on the third bending portion 431.
  • the restraint bands 5 and 6 can provide the third bent portion 431 that keeps the second bent portion 433 to be recessed toward the battery cell 2.
  • the inter-cell portion 44 and the connecting portion 43 form a series of internal passages through which a heat medium that exchanges heat with all the battery cells 2 from one end to the other end in the stacking direction of the battery stack 10 flows down. It is provided. According to this configuration, the assembled battery 1 has a plurality of connecting portions 43 facing the side surfaces 23 of all the battery cells 2. Therefore, the dead space can be suppressed over the entire length of the battery stack 10 in the stacking direction, and the stress generated in all the battery cells 2 can be suppressed.
  • the second embodiment differs from the first embodiment in the positional relationship between the connecting portion 43 and the side surface 23 of the battery cell 2.
  • the connecting portion 43 is provided so as to come into contact with the battery cell 2.
  • the first bent portion 432 and the second bent portion 433 are separated from the side surface 23 of the battery cell 2.
  • the heat medium passage member 4 is provided with the third bent portion 431 in contact with the side surface 23 of the battery cell 2.
  • a space in which air exists is formed between the pair of second bent portions 433 and the side surface 23 of the battery cell 2.
  • a ventilation passage for blowing air may be provided between the second bent portion 433 and the side surface 23 of the battery cell 2.
  • a member similar to a heat conductive member described later in the third embodiment may be provided between the second bent portion 433 and the side surface 23 of the battery cell 2.
  • the 2nd bending part 433 and the battery cell 2 are comprised so that heat can be moved via a heat conductive member.
  • the pair of second bent portions 433 and the battery cell 2 may be configured to be heat-transferable via inclusions. This inclusion is in contact with both the second bend 433 and the side surface 23 of the battery cell 2. This inclusion is also a component that is integrated with the battery cell and supports the second bend 433.
  • the third bent portion 431 is in contact with the battery cell 2. According to this configuration, a good heat transfer relationship can be established between the third bent portion 431 and the battery cell 2. As a result, it is possible to obtain an assembled battery 1 that can be used as a functional portion for controlling the temperature of the battery cell 2 in the third bent portion 431 while suppressing the stress generated in the battery cell 2 and suppressing the physique.
  • the third bent portion 431 is indirectly in contact with the battery cell 2 via an inclusion. According to this configuration, since the third bent portion 431 and the battery cell 2 can be supported by the inclusions, the deformation of the connecting portion 43 can be suppressed when an external force acts. When an elastic and easily deformable inclusion is used, the external force acting on the connecting portion 43 can be absorbed, and the deformation of the connecting portion 43 can be suppressed. When an elastic and easily deformable inclusion is used, the external force acting on the connecting portion 43 can be absorbed, and the deformation of the connecting portion 43 can be suppressed.
  • the third embodiment differs from the first embodiment in that the heat conductive member 7 is interposed between the connecting portion 43 and the side surface 23 of the battery cell 2. As shown in FIG. 11, the heat conductive member 7 is installed in contact with both the connecting portion 43 and the side surface 23 of the battery cell 2.
  • the connecting portion 43 and the battery cell 2 are configured to be heat transferable via the heat conductive member 7.
  • the heat conductive member 7 is a member having a higher heat conductivity than air and enhancing heat transfer between the inner surface of the connecting portion 43 and the side surface 23 of the battery cell 2.
  • a metal or graphite having high thermal conductivity can be used.
  • the heat conductive member 7 is preferably a member whose shape can be easily changed so as to fill the space formed between the connecting portion 43 and the battery cell 2.
  • the heat conductive member 7 is preferably provided in contact with all of the pair of first curved portions 432, the pair of second curved portions 433 and the third curved portion 431, and in contact with the battery cell 2.
  • the heat conductive member 7 is a bag-shaped body containing a gel-like heat-dissipating grease or a liquid material having a high heat conductivity so as to increase the contact area with the connecting portion 43 and the contact area with the battery cell 2. Can be adopted.
  • the assembled battery 1 includes a heat conductive member 7 that is interposed between the connecting portion 43 and the battery cell 2 and is in contact with both the connecting portion 43 and the battery cell 2.
  • the battery cell 2 and the connecting portion 43 are configured to easily transfer heat via the heat conductive member 7, so that the cooling capacity and the warming function of the battery cell 2 can be enhanced.
  • the heat conductive member 7 comes into contact with all of the pair of the first bent portion 432, the pair of the second bent portion 433, and the third bent portion 431.
  • the thermally conductive member 7 is in contact with the side surface 23 of the battery cell 2 facing the connecting portion 43.
  • the pair of first bending portions 432, the pair of second bending portions 433, and the third bending portion 431 contact the battery cell 2 via the heat conductive member 7 in a good heat transfer state.
  • the assembled battery 1 can be obtained in which the stress generated in the battery cells 2 and the body size are suppressed and the battery cells 2 can be utilized as a functional portion for controlling the temperature of the battery cells 2 in a wide range of the connecting portion 43.
  • the assembled battery 1 has a plurality of connecting portions 43 facing the side surfaces 23 of all the battery cells 2. According to this, since all the battery cells 2 come into contact with the connecting portion 43 via the heat conductive member 7 in a state of good heat transfer, it is possible to provide the assembled battery 1 having improved cooling capacity and warming function.
  • the fourth embodiment differs from the first embodiment in the configuration regarding the internal passage of the heat medium passage member 104.
  • the heat medium passage member 104 includes a first passage portion 4a and a second passage portion 4b each having a single passage therein.
  • the first passage portion 4a and the second passage portion 4b can be formed by bending a plate material into the shape shown in FIG.
  • the fifth embodiment is different from the first to third embodiments in the configuration related to the internal passage of the heat medium passage member 204.
  • the heat medium passage member 204 includes a first passage portion 4a and a second passage portion 4b each having a single passage inside.
  • the heat medium passage member 204 can be manufactured using a flat tube whose inside is partitioned into a first passage portion 4a and a second passage portion 4b by a partition portion.
  • the sixth embodiment differs from the first to third embodiments in the configuration related to the internal passage of the heat medium passage member 304.
  • the heat medium passage member 304 has a plurality of passages internally defined by corrugated inner fins. A heat medium flows in one direction through the plurality of passages. That is, the heat medium passage member 304 has a flow path configuration in which the heat medium flows one way from one side to the other in the stacking direction.
  • the heat medium passage member 304 can be formed by bending a plate material so as to incorporate the inner fin.
  • the seventh embodiment differs from the first embodiment to the third embodiment in the configuration related to the internal passage of the heat medium passage member 404.
  • the heat medium passage member 404 has a plurality of passages through which the heat medium flows in one direction.
  • the heat medium passage member 404 has a flow path configuration in which the heat medium flows one way from one side to the other in the stacking direction.
  • the heat medium passage member 404 can be manufactured by processing the flat multi-hole tube formed by extrusion to form the inter-cell portion 44 and the connecting portion 43.
  • the first bending portion 432, the second bending portion 433, and the third bending portion 431 are provided in the connecting portion 43, but the shape of the bending portion is not limited to this.
  • the above three bends may be, for example, different curved portions having at least two protrusions or recesses.
  • the assembled battery that can achieve the object disclosed in the specification may have a configuration including the third bent portion 431 that is partially provided in the entire height direction of the connecting portion 43. Even with this configuration, the portion where the third bent portion 431 is provided contributes to the suppression of the physique of the assembled battery 1, and the portion where the first bent portion 432 is provided contributes to the stress suppression of the battery cell 2. ..
  • the assembled battery capable of achieving the object disclosed in the specification may have a flow passage structure in which the heat medium flows in one direction in the heat medium passage member from one side to the other side in the stacking direction. Further, the battery pack may have a configuration in which the flow paths that flow in one direction from the one side to the other side in the stacking direction are arranged vertically in two in the heating medium passage member.
  • the assembled battery of the above-described embodiment is a laminated body of batteries formed by alternately stacking the battery cells 2 and the inter-cell portions 44, but the assembled battery that can achieve the object disclosed in the specification is limited thereto. Not done.
  • the assembled battery includes one in which the inter-cell portion 44 is interposed only between the specific battery cells 2 among all the adjacent battery cells 2 forming the battery stack 10. Therefore, the heat medium passage member included in the assembled battery 1 includes a configuration including at least one inter-cell portion 44.
  • the battery laminate of the above-described embodiment has a configuration in which each battery cell is not supported by the cell accommodating member, but a configuration in which battery cells accommodated in the cell accommodating member are laminated may be used.

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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)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

Cette invention concerne un bloc-batterie (10), comprenant un empilement de batteries (10) qui comprend des cellules de batterie empilées (2) et un élément de passage de milieu thermique (4, 104, 204, 304, 404) qui est fourni pour permettre un échange de chaleur entre les cellules de batterie et un milieu thermique circulant dans un passage interne. L'élément de passage de milieu thermique comprend des unités inter-cellules (44) qui sont interposées entre cellules de batterie adjacentes dans la direction d'empilement et permettent un échange de chaleur entre le milieu thermique circulant intérieurement et les cellules de batterie, et des unités de liaison (43) qui font circuler intérieurement le milieu thermique et qui constituent une partie qui se connecte entre unités inter-cellules adjacentes dans la direction d'empilement et qui fait saillie vers l'extérieur au-delà des cellules de batterie. Les unités de liaison ont trois sections incurvées. Celles-ci peuvent être, par exemple, différentes sections incurvées ayant au moins deux saillies ou évidements.
PCT/JP2020/004889 2019-03-07 2020-02-07 Bloc-batterie WO2020179355A1 (fr)

Applications Claiming Priority (2)

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JP2019041906A JP2020145116A (ja) 2019-03-07 2019-03-07 組電池
JP2019-041906 2019-03-07

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WO2020179355A1 true WO2020179355A1 (fr) 2020-09-10

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023187192A1 (fr) 2022-03-31 2023-10-05 Plastic Omnium Clean Energy Systems Research Ensemble batterie pour véhicule automobile

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Publication number Priority date Publication date Assignee Title
DE102021205211A1 (de) 2021-05-21 2022-11-24 Elringklinger Ag Batterievorrichtung

Citations (3)

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Publication number Priority date Publication date Assignee Title
WO2012029270A1 (fr) * 2010-08-30 2012-03-08 住友重機械工業株式会社 Pelle
JP2015103324A (ja) * 2013-11-22 2015-06-04 昭和電工株式会社 組電池の冷却構造
JP2016526765A (ja) * 2013-06-27 2016-09-05 バレオ システム テルミクＶａｌｅｏ Ｓｙｓｔｅｍｅｓ Ｔｈｅｒｍｉｑｕｅｓ 電気自動車またはハイブリッド自動車用のバッテリモジュールを製造するための電気化学セルのストリップ、およびかかるモジュールの製造

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012029270A1 (fr) * 2010-08-30 2012-03-08 住友重機械工業株式会社 Pelle
JP2016526765A (ja) * 2013-06-27 2016-09-05 バレオ システム テルミクＶａｌｅｏ Ｓｙｓｔｅｍｅｓ Ｔｈｅｒｍｉｑｕｅｓ 電気自動車またはハイブリッド自動車用のバッテリモジュールを製造するための電気化学セルのストリップ、およびかかるモジュールの製造
JP2015103324A (ja) * 2013-11-22 2015-06-04 昭和電工株式会社 組電池の冷却構造

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023187192A1 (fr) 2022-03-31 2023-10-05 Plastic Omnium Clean Energy Systems Research Ensemble batterie pour véhicule automobile
FR3134242A1 (fr) * 2022-03-31 2023-10-06 Plastic Omnium Clean Energy Systems Research Ensemble batterie pour véhicule automobile

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