WO2024052000A1 - Agencement de batterie rechargeable - Google Patents

Agencement de batterie rechargeable Download PDF

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Publication number
WO2024052000A1
WO2024052000A1 PCT/EP2023/070608 EP2023070608W WO2024052000A1 WO 2024052000 A1 WO2024052000 A1 WO 2024052000A1 EP 2023070608 W EP2023070608 W EP 2023070608W WO 2024052000 A1 WO2024052000 A1 WO 2024052000A1
Authority
WO
WIPO (PCT)
Prior art keywords
cell
channel
groove
energy storage
dielectric coolant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2023/070608
Other languages
German (de)
English (en)
Inventor
Julius Aktas
Jochen Eppinger
Dragos Cristian IANCU
Thomas KALMBACH
Jessica Kansy
Christian Kern
Oleksandr Pavlov
Eduard Reimer
Dieter Reisinger
Karl-Ulrich Schmid-Walderich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mahle International GmbH
Original Assignee
Mahle International GmbH
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 Mahle International GmbH filed Critical Mahle International GmbH
Publication of WO2024052000A1 publication Critical patent/WO2024052000A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • H01M10/62—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
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6553—Terminals or leads
    • 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
    • H01M10/6566—Means within the gas flow to guide the flow around one or more cells, e.g. manifolds, baffles or other barriers
    • 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
    • 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
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/514—Methods for interconnecting adjacent batteries or cells
    • H01M50/516—Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane

Definitions

  • the invention relates to a battery arrangement for a hybrid or electric vehicle according to the preamble of claim 1.
  • the invention also relates to a hybrid or electric vehicle with such a battery arrangement.
  • a plate heat exchanger with a plate for transferring thermal energy to a heat transfer medium and a flow channel limited at least on one side by the plate for channeling a flow of the heat transfer medium along the plate in a predetermined flow direction is known.
  • a large number of knobs projecting from the plate into the flow channel are provided for distributing the heat transfer medium within the flow channel.
  • a more uniform temperature distribution results when at least two adjacent knobs are connected to one another and/or to a channel boundary in such a way that they form a flow barrier that runs essentially transversely to the flow direction to block the flow direction.
  • the disadvantage of such a plate heat exchanger for cooling energy storage cells is a comparatively inhomogeneous temperature profile within the battery cells, since usually only one side of the energy storage cell is in direct contact with the plate.
  • Significantly improved cooling is achieved in so-called immersion-cooled accumulator arrangements, in which the energy storage cells are cooled via direct contact with a dielectric coolant.
  • the energy storage cells are held by cell carriers, whose task is not only to hold and fix the energy storage cells and cell connectors, via which the individual cell contact tabs are electrically connected to one another, but also to conduct the dielectric coolant.
  • a disadvantage of known immersion-cooled accumulator arrangements is that, in particular, areas with high electrical loads, such as the cell connectors, are difficult to cool, which impairs the performance of such a battery arrangement.
  • the present invention is therefore concerned with the problem of providing an improved or at least an alternative embodiment for an accumulator arrangement of the generic type, which in particular overcomes the disadvantage known from the prior art.
  • the present invention is based on the general idea of developing a battery arrangement known per se in such a way that cell connectors used there, which are used to electrically connect two cell contact tabs of two energy storage cells, can be cooled better and thereby the performance of the battery arrangement as a whole can be increased. Locally improved cooling of the cell connectors can also a shorter charging time can be achieved because the accumulator arrangement can be charged with higher charging power.
  • the accumulator arrangement according to the invention which can be used for a hybrid or electric vehicle, for example, has a housing in a known manner in which at least two energy storage cells held via a cell carrier are arranged.
  • two cell carriers are provided, between which the individual energy storage cells are arranged essentially parallel and the energy storage cells each protrude through the cell carrier with a cell contact tab.
  • the solution can also be implemented without a cell connector for pouch cells and generally also for other cell types that are contacted with a cell connector.
  • at least parts of the housing can be flowed through by a dielectric coolant for cooling the energy storage cells.
  • At least two cell contact tabs are connected to one another in an electrically conductive manner via a cell connector, for example with a plate-like structure.
  • the cell connector lies in a support area between two cell contact tabs on the cell carrier.
  • the energy storage cells are therefore arranged on one side of the cell carrier, while the cell contact tabs and the cell connectors connecting them are arranged on the opposite side.
  • the cell carrier now has at least one groove-like channel in the support area, which is covered by the respective cell connector, so that the cell connector can flow behind there with dielectric coolant through the groove-like channel and can therefore be cooled significantly better.
  • the cell connector in the support area could only be exposed to and cooled with dielectric coolant from the outside, ie only from one side.
  • the groove-like channel in the cell carrier also allows dielectric coolant to flow behind the cell connector and thus two-sided and significantly better cooling overall.
  • a cooling channel through which dielectric coolant flows is arranged between the housing and the cell connector.
  • This cooling channel takes over cooling of the front of the respective cell connector, whereby cooling of the cell connector on both sides and thus a reduction in the thermal load in this area can be achieved.
  • the at least one groove-like channel on the back of the cell connector has a smaller flow cross section than the cooling channel on the front of the cell connector, so that the groove-like channel can act as a throttle.
  • a through opening leading through the cell carrier is provided, through which dielectric coolant can flow from the groove-like channel to the energy storage cells or from these into the groove-like channel.
  • the through opening can of course also be designed as a throttle. Due to the different pressures on the front and back of the respective cell connector, a predefined pressure gradient and thus a predefined flow can be enforced the dielectric coolant always flows from the higher pressure area to the lower pressure area.
  • the cell carrier is designed as a plastic injection-molded part. This not only offers the possibility of producing the cell carrier cost-effectively and of high quality, but also the possibility of forming the groove-like channel or channels in the respective cell carrier by changing a plastic injection molding tool once.
  • the cell contact tabs of the energy storage cells are expediently welded to the cell connector.
  • An electrically conductive connection is required between the cell contact tabs and the associated cell connector, which must also ensure an electrically conductive connection in the long term during operation of the accumulator arrangement.
  • Such a long-term electrically conductive connection can be created via a welded connection of the respective cell contact tab with the associated cell connectors, such welding being automated and therefore not only of high quality but also cost-effective.
  • each energy storage cell is fixed at a first end to a cell carrier described in the previous paragraphs and at an opposite second end to a further cell carrier, with a further cooling channel and a further groove-like channel being arranged in the area of the cell connector on the further cell carrier .
  • This enables flow through the accumulator arrangement according to the invention as follows: First, the dielectric coolant flows from the cooling channel behind the cell connector into the groove-like formed by the cell connector and the cell carrier Channel and from this through the through opening via the energy storage cells and a further through opening in the further cell carrier to the further groove-like channel formed there by the further cell carrier and the cell connector. The dielectric coolant then flows from this to the further cooling channel. This enables a backflow and thus cooling on both sides of both the cell connector at the first end of the energy storage cell and the cell connector at the opposite second end of the energy storage cell and thus particularly effective cooling of both cell connectors.
  • the dielectric coolant has a pressure po in the area of the cooling channel, while it has a pressure pi in the area of the groove-like channel, the energy storage cells and the further groove-like channel. In the subsequent additional cooling channel, the dielectric coolant has a pressure p2.
  • the following relationship applies with regard to the individual pressures po.i,2:
  • the different pressures po, pi, p2 can therefore create a pressure gradient for the dielectric coolant within the accumulator arrangement, whereby it flows through the accumulator arrangement in a predefined manner and is thus cooled.
  • Throttle effects can be created via a respective flow cross section of the groove-like channel or the further groove-like channel in general of the groove-like channels or the further groove-like channels as well as the through opening or the further through opening, which force individual and locally different cooling.
  • the present invention is further based on the general idea of equipping a hybrid or electric vehicle with a battery arrangement described in the previous paragraphs. This makes it possible to transfer the advantages described with regard to the battery arrangement to the hybrid or electric vehicle. Specifically, the advantages lie in improved performance of the accumulator arrangement, especially when charging it, which means that charging time for the hybrid or electric vehicle can be reduced and its performance can be increased. This is particularly accompanied by an increase in comfort for a user of the hybrid or electric vehicle.
  • FIG. 1 shows a view of a cell carrier with cell connectors and groove-like channels according to the invention of an accumulator arrangement according to the invention
  • Figure 2 shows a sectional view along the section plane A - A from Figure 1
  • Figure 3 is a view of another cell carrier with further groove-like channels under cell connectors
  • Figure 4 is a sectional view along the section plane B - B from Figure 3.
  • an accumulator arrangement 1 for a hybrid or electric vehicle 2 (not shown) has a housing 3 in which at least two energy storage cells 5 held via a cell carrier 4 are arranged.
  • the housing 3 can be flowed through at least in part by a dielectric coolant 6 for cooling the energy storage cells 5.
  • Each energy storage cell 5 has at least one cell contact tab 7 projecting through the cell carrier 4, with at least two cell contact tabs 7 being connected to one another in an electrically conductive manner via a cell connector 8.
  • the cell connector 8 or the cell connectors 8 each lie in a support area 9 between two cell contact tabs 7 on the cell carrier 4.
  • the cell carrier 4 now has at least one groove-like channel 10 in the respective support area 9 (compare Figures 1 and 2), which is covered by the cell connector 8, so that the cell connector 8 can flow behind there with dielectric coolant 6 and therefore also from a back side and can therefore be cooled on both sides.
  • a cooling channel 11 through which dielectric coolant 6 can flow is arranged, so that the cell connector 8 in this area can also be acted upon by dielectric coolant 6 from a front side and can therefore be cooled.
  • the at least one groove-like channel 10 can have a smaller flow cross section than the cooling channel 11 and thereby act as a throttle.
  • a through opening 12 leading through the cell carrier 4 is provided, through which the dielectric coolant 6 can flow from the groove-like channel 10 to the energy storage cells 5 or from these into the groove-like channel 10.
  • the groove-like channel 10 is integrated into the shape of the cell carrier 4, whereby the cell carrier 4 can be designed, for example, as a plastic injection molded part, whereby the groove-like channel 10 or all groove-like channels 10 are formed as corresponding recesses in the cell carrier 4 by a one-time adjustment of a plastic injection molding tool can.
  • the cell carrier 4 is arranged at a first end, in particular at a first longitudinal end, of the respective energy storage cell 5 (compare Figures 1 and 2), while at an opposite second end (compare Figures 3 and 4) each of these energy storage cells 5 is fixed to a further cell carrier 4 '.
  • a further cooling channel 1T and a further groove-like channel 10' are arranged on the further cell carrier 4'.
  • the dielectric coolant 6 flows from the cooling channel 11 at the first end of the energy storage cell 5 into the groove-like channel 10 and along it to the through opening 12, where it passes through the cell carrier 4 (see FIG. 2) and between the energy storage cells 5. Then the dielectric coolant 6 flows to a further through opening 12' (see Figure 4) in the further groove-like channel 10' and from there to the further cooling channel 11'.
  • the dielectric coolant 6 has a pressure po in the area of the cooling channel 11 (see FIG. 2), while it has a pressure pi in the area of the groove-like channel 10, between the energy storage cells 5 and in the area of the further groove-like channel 10 '. In the area of the further cooling channel 11 ', the dielectric coolant 6 has a pressure p2, the following relationship applying to the individual pressures po, pi, p2:
  • a particularly locally increased cooling of the cell connectors 8 can be achieved, since these can now also be additionally cooled from a back due to the groove-like channels 10 or the further groove-like channels 10 '.
  • Such two-sided cooling of the cell connectors 8 also enables material and ultimately also cost and weight savings.
  • the groove-like channels 10 or the further groove-like channels 10 ' can be integrated in a particularly simple manner into the respective cell carrier 4 or further cell carrier 4'.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Secondary Cells (AREA)

Abstract

L'invention concerne un agencement de batterie rechargeable (1) comprenant un boîtier (3), dans lequel au moins deux cellules de stockage d'énergie (5) maintenues au moyen d'un support de cellules (4) sont agencées. Selon les caractéristiques de l'invention - un fluide de refroidissement diélectrique (6) pour refroidir les cellules de stockage d'énergie (5) peut s'écouler au moins en partie à travers le boîtier (3), - chaque cellule de stockage d'énergie (5) présente au moins une patte de contact de cellule (7) faisant saillie à travers le support de cellules (4), - au moins deux pattes de contact de cellule (7) sont électriquement connectées par conduction l'une à l'autre via un connecteur de cellule (8), - le connecteur de cellule (8) s'appuie sur le support de cellules (4) dans une région d'appui (9), - le support de cellules (4) a dans la région d'appui (9) au moins un canal de type rainure (10) recouvert par le connecteur de cellule (8), de sorte que le fluide de refroidissement diélectrique (6) peut s'écouler derrière le connecteur de cellule (8) et le refroidir.
PCT/EP2023/070608 2022-09-06 2023-07-25 Agencement de batterie rechargeable Ceased WO2024052000A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022209264.3 2022-09-06
DE102022209264.3A DE102022209264A1 (de) 2022-09-06 2022-09-06 Akkumulatoranordnung

Publications (1)

Publication Number Publication Date
WO2024052000A1 true WO2024052000A1 (fr) 2024-03-14

Family

ID=87557754

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2023/070608 Ceased WO2024052000A1 (fr) 2022-09-06 2023-07-25 Agencement de batterie rechargeable

Country Status (2)

Country Link
DE (1) DE102022209264A1 (fr)
WO (1) WO2024052000A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013000828A1 (fr) * 2011-06-30 2013-01-03 Avl List Gmbh Batterie électrique rechargeable
EP2654101A1 (fr) * 2012-04-19 2013-10-23 Samsung SDI Co., Ltd. Bloc-batteries
DE102013216523A1 (de) 2013-08-21 2015-02-26 Behr Gmbh & Co. Kg Plattenwärmeübertrager
DE102014202549A1 (de) * 2014-02-12 2015-08-13 Siemens Aktiengesellschaft Elektrische Energiespeichereinrichtung und Verfahren zum Entwärmen einer elektrischen Energiespeichereinrichtung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012111970A1 (de) * 2012-12-07 2014-06-12 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Batterieanordnung und Verfahren zum Kühlen einer Batterie
DE102013218489A1 (de) * 2013-09-16 2015-03-19 Robert Bosch Gmbh Batteriemodul und Batteriepack
DE102017217583A1 (de) * 2017-10-04 2019-04-04 Siemens Aktiengesellschaft Anordnung von Batteriezellen und Flugzeug mit einer derartigen Anordnung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013000828A1 (fr) * 2011-06-30 2013-01-03 Avl List Gmbh Batterie électrique rechargeable
EP2654101A1 (fr) * 2012-04-19 2013-10-23 Samsung SDI Co., Ltd. Bloc-batteries
DE102013216523A1 (de) 2013-08-21 2015-02-26 Behr Gmbh & Co. Kg Plattenwärmeübertrager
DE102014202549A1 (de) * 2014-02-12 2015-08-13 Siemens Aktiengesellschaft Elektrische Energiespeichereinrichtung und Verfahren zum Entwärmen einer elektrischen Energiespeichereinrichtung

Also Published As

Publication number Publication date
DE102022209264A1 (de) 2024-03-07

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