WO2023099220A1 - Boîtier pour une batterie rechargeable, batterie rechargeable et véhicule - Google Patents

Boîtier pour une batterie rechargeable, batterie rechargeable et véhicule Download PDF

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Publication number
WO2023099220A1
WO2023099220A1 PCT/EP2022/082195 EP2022082195W WO2023099220A1 WO 2023099220 A1 WO2023099220 A1 WO 2023099220A1 EP 2022082195 W EP2022082195 W EP 2022082195W WO 2023099220 A1 WO2023099220 A1 WO 2023099220A1
Authority
WO
WIPO (PCT)
Prior art keywords
cage
housing
accumulator
spacers
trough
Prior art date
Application number
PCT/EP2022/082195
Other languages
German (de)
English (en)
Inventor
Bastian BLÖMEKE
Original Assignee
HELLA GmbH & Co. KGaA
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 HELLA GmbH & Co. KGaA filed Critical HELLA GmbH & Co. KGaA
Publication of WO2023099220A1 publication Critical patent/WO2023099220A1/fr

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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • 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
    • H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
    • 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
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
    • 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 housing for an accumulator of a motor vehicle with a cage.
  • the invention further relates to an accumulator with such a housing and to a motor vehicle.
  • Such housings for an accumulator are known per se and are installed in motor vehicles in which lithium-ion accumulators are arranged. These are currently motor vehicles with an all-electric or hybrid drive.
  • the lithium-ion accumulators are sensitive to damage and can then easily catch fire, which is practically impossible to extinguish. For this reason, the accumulators must be protected against mechanical damage in such a way that an impact from a column with a force of 12 t is left unharmed.
  • the accumulators are surrounded by a corresponding jacket. This is e.g. made of solid die-cast aluminum, which is complex and requires a lot of material with a corresponding weight.
  • the accumulators are sensitive to heat and must be protected from excessive heat. This heat can be, for example, waste heat from a combustion engine or heat from the operation of the accumulator during charging or discharging processes. Therefore, the accumulators, which have a high output, usually have to be actively cooled by means of a cooling water circuit, for example, which also requires a corresponding amount of effort.
  • Lithium-ion accumulators with a higher capacity and/or voltage include a large number of cells that are combined into a package.
  • a cage is arranged for this purpose, in which the cells are clamped in such a way that (reversible and irreversible) changes in their dimensions, for example during charging, discharging and as a result of aging, can be accommodated.
  • the cells of the accumulator are electrically connected to one another in series and/or in parallel and connected to a battery management system (BMS) by means of a cell connector printed circuit board and a wiring harness.
  • BMS battery management system
  • Lead-acid batteries are currently used as starter batteries in motor vehicles. It is foreseeable that they may no longer be used, so that they will be replaced by lithium-ion accumulators. Since the starter batteries have a relatively low capacity and generate correspondingly little waste heat, only protection against the waste heat from the combustion engine is required here. In the case of the known housings, it is necessary to provide active cooling or thermal insulation because of their massive configuration combined with good heat conduction.
  • the object is achieved by a housing according to claim 1.
  • the object is achieved by an accumulator with such a housing and by a vehicle with such an accumulator.
  • Advantageous configurations of the invention are the subject matter of the dependent claims.
  • the invention is intended to be particularly advantageous for accumulators which develop only a small amount of inherent heat during charging and discharging and in which a high load only occurs for a very limited time.
  • Such an accumulator is a starter battery for a motor vehicle, for example.
  • Both the cage and the casing can each be made from relatively thin sheet metal, for example sheet metal with a sheet thickness of 0.2 to 1 millimeter.
  • the spacers can be pressed into the sheet metal of the cage.
  • the spacers are advantageously formed by deep-drawing pressing metal sheets of the cage and/or the casing.
  • the spacers cause an air cushion to be formed between the cage and the jacket, which causes good thermal insulation.
  • the spacers cause an air cushion to be formed between the cage and the jacket, which causes good thermal insulation.
  • a housing for an accumulator can be produced simply and inexpensively, which meets the requirements for mechanical stability and which does not require any further devices for its safe operation.
  • the cage is locked in the jacket. This facilitates assembly; because the cage with the cells and with electrical and/or electronic components only has to be pushed into the jacket and is then securely fastened by the latching without any further action.
  • the latching takes place, for example, by means of grooves arranged inside the jacket, for example on the end faces, and corresponding elastically mounted latching lugs on the outside of the cage.
  • the jacket is made in two parts. As a result, only a few parts have to be handled during assembly.
  • a lower area is advantageously made of sheet metal, with the lower area being designed to accommodate the cage.
  • the cage is acted upon at least in regions by a further sheet, the further sheet being arranged between the cage and the jacket and the further sheet being formed with one or more spacers.
  • the spacers are preferably introduced into the further metal sheet by a deep-drawing process.
  • the spacers are advantageously designed as projections on one side, the projections advantageously forming a mechanical connection between the cage and the casing.
  • the jacket is formed by a deep-drawn sheet metal trough and a plastic cover for closing the trough.
  • the lid can be glued to the trough in a sealing manner. This further facilitates assembly.
  • an upper edge of the trough has, for example, a direct or indirect groove for receiving the adhesive and the edge of the lid.
  • the cage is advantageously designed to accommodate electrical or electronic components.
  • electrical or electronic components are, for example, a battery controller or a battery management system (BMS), a connector or a sensor.
  • BMS battery management system
  • a bursting disc is arranged in a wall of the jacket. This prevents impermissibly high pressure in the housing.
  • the bursting disc is preferably arranged in the cover.
  • the cage is formed from four metal sheets which are dimensioned according to the external shape of the accumulator and connected to one another. the are. A floor of the cage is then mostly open; Broadsides curve inward at their lower ends to provide support for end portions of the cells. This allows the creation of a modular system for the cage to adapt to different sizes of the accumulator.
  • the cage advantageously comprises a plurality of metal sheets, the metal sheets forming the sides and optionally the base of the cage.
  • the metal sheets are advantageously connected in such a way that the metal sheets form a cuboid that is open at the top, the cuboid being designed to accommodate the cells.
  • the metal sheets each have at least one projection as a spacer, so that the other metal sheets are not necessary.
  • the spacers can each be applied to the outside of the cage in such a way that the cage is designed at a distance from the inner walls after it has been introduced into the jacket.
  • the respective spacer can be designed as a cylinder, as a pyramid—advantageously as a pyramid section, or as a cone or truncated cone, or as a cuboid.
  • the spacers serve to firmly connect the cage to the jacket, for example by means of an adhesive connection.
  • Figure 1 is a perspective view of a cage with cells clamped in it
  • FIG. 2 shows a vertical longitudinal section through the cage of FIG. 1, which is inserted into a trough
  • Figure 3 is a vertical section through the cage and the trough of Figure 2 in the area of a latch as a detail and
  • Figure 4 shows a section of a closed housing including the cage and the accumulator.
  • a housing 1 for a battery 2 of a motor vehicle has a cage 3 and a jacket 4 .
  • the accumulator 2 consists of a multiplicity of four cells 5 in this case, which are electrically connected to one another.
  • the accumulator 2 is, for example, a lithium-ion accumulator 2.
  • the cage 3 is formed from, for example, three, four or five metal sheets which, when assembled, form a hollow parallelepiped which is open at the top; in the case of four sheets, the cuboid is also essentially open at the bottom.
  • the metal sheets are connected to one another by means of e.g. welding, riveting, gluing, clinching (clinching) or screws.
  • the dimensions of the cage 3 are matched to the accumulator 2 in such a way that the latter is clamped elastically in the cage 3 and the cage 3 can absorb expansions of the cells 5 in this way.
  • a plurality of spacers 6 are arranged on the outer sides of the cage 3 . As shown in the figures, these can be designed and/or arranged differently for long sides 3a on the one hand and for long sides 3b and a bottom 3c of the cage 3 on the other hand.
  • the long sides 3a and the wide sides 3b are based on the dimensions of the cells 5.
  • the spacers 6 here have a circular cross-section and predetermined lengths (this is the extension perpendicular to a main surface of the metal sheet) and are distributed in regular patterns on the long sides 3a and short sides 3b, respectively.
  • the spacers on the broad sides 3b are smaller, both in terms of their length and in terms of their diameter, than those of the long sides 3a.
  • the spacers 6 are separately and uniformly spaced apart for each of the sides.
  • the spacers 6 are incorporated here by pressing with appropriate stamps in the metal sheets. This has the advantage that the spacers 6 can be manufactured simply and inexpensively and that they do not cause any additional weight. Alternatively, the spacers 6 have any other shape, are made of a light, dimensionally stable material and are glued to the outside of the metal sheets, for example.
  • Free (that is, outward-pointing) ends of all spacers 6 lie separately in one plane for each of the sides of cage 3 .
  • the broad sides 3b and the bottom 3c of the cage 3 are bent into a U-shape from a single sheet.
  • this metal sheet is angled twice by 90°; a base of the U here forms the floor 3c and has spacers 6 correspondingly pointing downwards.
  • the long sides 3a are fastened between the broad sides 3b.
  • the bottom 3c of the cage 3 is essentially open.
  • the broad sides 3b are bent by 90° in their lower region according to the figures, counter to the longitudinal extent of the spacers 6, with at least one row of the spacers 6 pointing downwards.
  • the cells 5 rest with their lower ends on the bent area.
  • each of the sides is made from a separate sheet.
  • the metal sheets are connected to form the cuboid that is open at the top.
  • the formation of the cage 3 is also possible from one or two metal sheets.
  • the metal sheets of the long sides 3a are in any case folded in each of their four side areas in such a way that free ends of the folded side areas lie in the plane of the free ends of the associated spacers 6 .
  • each of the broad sides 3b of the cage 3 two locking lugs 7 are arranged at a distance, which are formed from the associated sheet metal.
  • two (relative to the open-topped cage 3) vertical, continuous slots are let in, which extend in an upper area of the broad side 3b, here between two vertically adjacent spacers 6.
  • Each of the locking lugs 7 is arranged centrally between two horizontally adjacent spacers 6 and projects out of the plane that runs through the free ends of the spacers 6 .
  • a corresponding part of the metal sheet is bent in a wave-like manner in longitudinal section in the direction of the plane of the free ends of the spacers 6 in such a way that, on the one hand, the locking lug 7 forms a higher wave and therefore protrudes from this plane and, on the other hand, the other waves form a resilient element for the Detent 7 form. This can be seen particularly well in FIG.
  • the jacket 4 completely encloses the cage 3, the accumulator 2 and the components 11 and is formed from a trough 8 and a cover 9.
  • the trough 8 is cuboid and open at the top. Its dimensions are dimensioned such that it can accommodate the cage 3 with the accumulator 2 with no or minimal lateral play.
  • the trough 8 is drawn here in one piece from a sheet metal plate. Its upper area is designed to accommodate the cover 9 . Holes for screwing in screws are punched or drilled.
  • each side wall of the trough 8 which is assigned to one of the broad sides 3b of the cage 3, a horizontal groove 10 is pressed, which corresponds to the corresponding locking lugs 7.
  • a bead is formed on the outside of the trough 8 which facilitates the handling of the housing 1 and thus also of the accumulator 2 which is ready for use.
  • a through opening which is closed with a bursting disc.
  • the bursting disc is preferably arranged in the cover 9 because this is easier to manufacture.
  • the cover 9 is made of plastic, e.g. by injection molding, and has a cavity for accommodating electrical and/or electronic components such as a cell connector circuit board, a BMS and a bolt terminal block.
  • the cover 9 can have an integrated seal for sealing the housing 1 and can be fastened to the trough 8 by means of the screws so that it closes.
  • the components are summarized in a simplified way as a box. Bolts of the bolt terminal strip are guided outwards through the cover 9, so that an on-board electrical system of the motor vehicle can be connected.
  • the cells 5 For assembly into the ready-to-use accumulator 2, the cells 5, the components and the prefabricated cage 3 and the cover 9 are provided.
  • the cells 5 are clamped in the cage 3 in the required number and alignment.
  • the cage 3 with the accumulator 2 is pushed into the trough 8, with the latching lugs 7 snapping into the groove 10.
  • the cell connector circuit board, the BMS and the bolt terminal strip are mounted on the accumulator 2 and electrically connected. Finally, the cover 9 is put on and sealed with adhesive.
  • the invention relates in particular to a housing 1 for an accumulator 2 of a motor vehicle with a cage 3, in which cells 5 of the accumulator 2 are clamped, with electrical and electronic components 11, and with a jacket 4, which holds the cage 3 with the accumulator 2 and encloses the components.
  • the housing 1 is to be improved in such a way that it meets the requirements with regard to mechanical and thermal safety, can be produced inexpensively and does not require external cooling. This is achieved in that a large number of spacers 6 are arranged on the outside of the cage 3 .

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)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Abstract

L'invention concerne un boîtier (1) pour une batterie (2) dans un véhicule automobile, ainsi qu'une batterie et un véhicule. Le boîtier comprend une cage (3) dans laquelle des cellules (5) de la batterie rechargeable (2) sont serrées et qui comporte des composants électriques et électroniques (11) et possède un corps (4) qui renferme la cage (3) hébergeant la batterie rechargeable (2) et les composants. Le boîtier (1) est destiné à être amélioré de manière à satisfaire les exigences en matière de sécurité mécanique et thermique, peut être fabriqué à faible coût et ne nécessite pas de refroidissement extérieur. À cet effet, une pluralité d'entretoises (6) sont agencées sur les côtés extérieurs de la cage (3).
PCT/EP2022/082195 2021-11-30 2022-11-17 Boîtier pour une batterie rechargeable, batterie rechargeable et véhicule WO2023099220A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021131368.6A DE102021131368A1 (de) 2021-11-30 2021-11-30 Gehäuse für einen Akkumulator, Akkumulator und Fahrzeug
DE102021131368.6 2021-11-30

Publications (1)

Publication Number Publication Date
WO2023099220A1 true WO2023099220A1 (fr) 2023-06-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2022/082195 WO2023099220A1 (fr) 2021-11-30 2022-11-17 Boîtier pour une batterie rechargeable, batterie rechargeable et véhicule

Country Status (2)

Country Link
DE (1) DE102021131368A1 (fr)
WO (1) WO2023099220A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102782896A (zh) * 2010-05-11 2012-11-14 宝马股份公司 由多个棱柱形的存储电池构成的储能模块以及用于制造储能模块的方法
WO2019155713A1 (fr) * 2018-02-09 2019-08-15 三洋電機株式会社 Dispositif d'alimentation électrique et véhicule électrique et dispositif de stockage d'énergie comportant ledit dispositif d'alimentation électrique
WO2020089937A1 (fr) * 2018-11-02 2020-05-07 Tvs Motor Company Limited Structure de support pour cellules de stockage d'énergie dans un dispositif de stockage d'énergie

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7507499B2 (en) 2004-05-24 2009-03-24 General Motors Corporation Battery pack arrangements
DE102013019360B4 (de) 2013-11-19 2023-12-14 Audi Ag Energiespeicheranordnung und Kraftfahrzeug
DE102016222643A1 (de) 2016-11-17 2018-05-17 Robert Bosch Gmbh Baukastensystem umfassend ein einteilig ausgebildetes Gehäuse sowie einen einsetzbaren Rahmen
JP6990072B2 (ja) 2017-09-12 2022-01-12 株式会社ブルーエナジー 蓄電装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102782896A (zh) * 2010-05-11 2012-11-14 宝马股份公司 由多个棱柱形的存储电池构成的储能模块以及用于制造储能模块的方法
WO2019155713A1 (fr) * 2018-02-09 2019-08-15 三洋電機株式会社 Dispositif d'alimentation électrique et véhicule électrique et dispositif de stockage d'énergie comportant ledit dispositif d'alimentation électrique
WO2020089937A1 (fr) * 2018-11-02 2020-05-07 Tvs Motor Company Limited Structure de support pour cellules de stockage d'énergie dans un dispositif de stockage d'énergie

Also Published As

Publication number Publication date
DE102021131368A1 (de) 2023-06-01

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