DE102017209729A1 - Battery case and vehicle with such a battery case - Google Patents

Battery case and vehicle with such a battery case

Info

Publication number
DE102017209729A1
DE102017209729A1 DE102017209729.9A DE102017209729A DE102017209729A1 DE 102017209729 A1 DE102017209729 A1 DE 102017209729A1 DE 102017209729 A DE102017209729 A DE 102017209729A DE 102017209729 A1 DE102017209729 A1 DE 102017209729A1
Authority
DE
Germany
Prior art keywords
housing
spring
battery
fastening
battery housing
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.)
Pending
Application number
DE102017209729.9A
Other languages
German (de)
Inventor
Sandra Hettwer
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.)
Volkswagen AG
Original Assignee
Volkswagen AG
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 Volkswagen AG filed Critical Volkswagen AG
Priority to DE102017209729.9A priority Critical patent/DE102017209729A1/en
Publication of DE102017209729A1 publication Critical patent/DE102017209729A1/en
Pending legal-status Critical Current

Links

Images

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2/00Constructional details or processes of manufacture of the non-active parts
    • H01M2/10Mountings; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M2/1016Cabinets, cases, fixing devices, adapters, racks or battery packs
    • H01M2/1072Cabinets, cases, fixing devices, adapters, racks or battery packs for starting, lighting or ignition batteries; Vehicle traction batteries; Stationary or load leading batteries
    • H01M2/1077Racks, groups of several batteries
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2/00Constructional details or processes of manufacture of the non-active parts
    • H01M2/02Cases, jackets or wrappings
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2/00Constructional details or processes of manufacture of the non-active parts
    • H01M2/02Cases, jackets or wrappings
    • H01M2/04Lids or covers
    • H01M2/043Lids or covers for large-sized cells or batteries, e.g. LIS batteries, traction or motive power type or standby power batteries
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2/00Constructional details or processes of manufacture of the non-active parts
    • H01M2/02Cases, jackets or wrappings
    • H01M2/08Sealing materials
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00Batteries for particular applications
    • H01M2220/20Batteries in motive systems, e.g. vehicle, ship, plane
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

Suggested is u.a. a battery housing (4), having a housing lower part (5) and a housing cover (7), the housing lower part (5) and the housing cover (7) having mutually corresponding bearing surfaces (10, 11) and in the region of said bearing surfaces (10, 11) , Where appropriate, mediated by a sealing element, placed on top of each other and are positively connected to each other in predetermined attachment points (8) by means of a respective mechanical fastener (9). It is advantageously provided that at least one of the fastening points (8) is associated with a spring element (14) which is fixed to the battery housing (4) by means of the fastening element (9) associated with the relevant fastening point (8), wherein the spring element (14) in the lateral Distance to said attachment point (8) from the housing outside locally locally biased against the housing cover (7).

Description

  • The invention relates to a battery housing according to the preamble of claim 1 of the invention. According to claim 9 of the invention further relates to a vehicle, in particular electric or hybrid vehicle, with such a battery case.
  • The DE 102011 111 229 A1 describes a battery case with a box-like, eg deep-drawn housing lower part and acting as a housing cover flat part. The lower housing part and the housing cover form in each case a circumferential support flange in their edge regions and are placed in the region of said support flanges mediated by an annular seal and by means of a plurality of fasteners, such as mounting screws, releasably connected to each other. From the large number of fastening screws results in increased installation costs.
  • The object of the invention is to reduce the effort to connect the housing base to the housing cover while retaining the advantages of the prior art.
  • Starting from a battery housing, with a housing lower part and a housing cover, the housing lower part and the housing cover having corresponding bearing surfaces and in the region of said bearing surfaces, possibly mediated by a sealing element, superimposed and positively connected to each other in predetermined attachment points by means of a mechanical fastener, the object is achieved in that at least one of the attachment points is associated with a spring element which is fixed by means of the attachment point associated fastening element on the battery case, the spring element in the lateral distance to said attachment point of housing-outside locally applied under bias on the housing cover ,
  • By this measure, it is advantageously possible, while ensuring a solid, preferably tight connection of the housing cover with the housing lower part to save a certain number of fasteners and so minimize assembly costs.
  • The subclaims describe preferred developments or refinements of the invention.
  • Thereafter, it is provided that the spring element preferably in the region of the said bearing surfaces of housing-outside locally biased against the housing cover, whereby the power flow from the spring element in the housing cover and further into the housing lower part is optimized. In a further development of the invention, it is provided that the spring element is fixed in two or more fastening points by means of a respective fastening element on the battery housing, wherein the spring element between two adjacent attachment points under bias on the housing cover. This has the advantage that a minimization of the number of spring elements is made possible while minimizing the number of attachment points together with associated fasteners. Preferably, the spring element is designed as an elongated leaf spring, which therefore preferably extends along the contact surface area of the mutually corresponding contact surfaces of the housing cover and housing lower part. A particularly simple and reliable spring element in the form of the leaf spring is achieved by the fact that it has a fixed in the respective attachment point on the battery housing mounting portion which merges on one or both sides in a prestressed on the housing cover at least partially adjacent support portion. Preferably, the spring element is formed from a flat or I-profile or from a U-profile. In particular, the latter measure allows the spring element with a particularly high spring force "F" train. More preferably, the spring element is formed by a bent sheet metal part, in particular steel, preferably spring steel.
  • The invention also relates to a vehicle, in particular electric or hybrid vehicle, with at least one battery housing of the type described above.
  • The invention will be explained in more detail with reference to the embodiments schematically illustrated in the drawings. However, it is not limited to these, but covers all embodiments defined by the claims. For the purposes of the present description, the usual direction of travel of a vehicle, in particular motor vehicle, with "-x"("minusx"), the direction opposite to its usual direction of travel with " + x "(" Plus x "), Starting from the usual direction of travel (-x) the direction in the horizontal direction transverse to x Direction seen to the right with " + y ", Starting from the usual direction of travel (-x ) the direction in the horizontal across x- Direction to the left as seen with "- y ", The direction in the vertical across x Direction upwards with "+ z ", And the direction in the vertical direction transverse to the x-direction down as seen with" -z ". This designation of the spatial directions in Cartesian coordinates corresponds to the coordinate system commonly used in the automotive industry. moreover For example, terms such as "front,""rear,""top,""bottom," and terms of similar meaning including the terms "right" and "left" are used as commonly used to indicate direction on a vehicle. Show it:
    • 1 very schematically a with a battery, in this case a traction battery or high-voltage battery (HV battery) equipped vehicle,
    • 2 a single view of a battery case of the battery according to the prior art,
    • 3 one in the vehicle longitudinal direction ( X Direction) extending contact portion between a lower housing part and a housing cover of an inventively designed battery housing according to a first advantageous embodiment of the invention,
    • 4 the detail " Z " to 3 .
    • 5 one in the vehicle longitudinal direction (X Direction) extending contact portion between a lower housing part and a housing cover of an inventively designed battery housing according to a second advantageous embodiment of the invention, and
    • 6 the detail " Y " to 5 ,
  • 1 shows first a vehicle 1 , in this case a passenger car, with an electric motor 2 as a drive motor and a traction or high-voltage battery forming battery assembly 3 , According to this embodiment is thus a purely electrically powered vehicle 1 , Also covered by the invention is a so-called hybrid vehicle, which in addition to one or more electric motors 2 also has an internal combustion engine (not shown in the drawing). The battery assembly 3 has a battery case 4 on, in which preferably two or more not graphically illustrated and interconnected electrically interconnected battery modules are arranged, which in turn preferably consist of several, electrically interconnected battery cells.
  • A battery case 4 according to the prior art, according to 2 a shell-shaped or trough-shaped housing lower part 5 with a non-illustrated housing bottom and a housing wall 6 on. On the case back the battery modules mentioned above are turned off and fixed. The lower housing part 5 is a the battery case 4 closing housing cover 7 assigned, which in vehicle vertical direction (Z-direction) seen from the top of the housing base 5 put on and in a variety of attachment points 8th by means of a mechanical fastening element 9 , in this case in each case a fastening screw, with the lower housing part 5 positively connected.
  • For this purpose form the lower housing part 5 and the housing cover 7 of the battery case 4 each a circumferential bearing surface 10 . 11 out. The bearing surface 10 of the housing base 5 is through an end face twelve the housing wall 6 educated. The bearing surface 11 of the housing cover 7 is by a parked outside housing, circumferential support flange 13 educated. The housing cover 7 preferably consists of a deep-drawn sheet metal, for example of aluminum or an aluminum alloy. It is preferred between said bearing surfaces 10 . 11 arranged a non-illustrated, annular sealing element, which further preferably consists of an elastomer and by the non-positive connection respectively screwing the housing cover 7 with the housing lower part 5 is pressed together, so to speak. This results in a particularly tight joint connection between the housing cover 7 with the housing lower part 5 ,
  • To maintain the advantages of the prior art, the effort to connect the housing base 5 with the housing cover 7 to reduce is according to the 3 to 6 at least one attachment point 8th a spring element 14 assigned in the manner of an elongated leaf spring. The spring element 14 respectively, the leaf spring is by means of the relevant attachment point 8th associated mechanical fastener 9 , in the form of a fastening screw, on the battery housing 4 set such that this / s in the lateral distance to said attachment point 8th from outside the housing, ie in the vehicle vertical direction ( Z Direction) seen from top to bottom locally under bias on the housing cover 7 abuts and so the same in the contact area with a force "F" against the lower housing part 5 applied. In contrast to the above-described prior art, according to this embodiment, the support surface 10 of the housing base 5 by a housing outside parked, circumferential support flange 15 the housing wall 6 educated. Alternatively, said bearing surface 10 of course, also based on the prior art described above by an end face twelve the housing wall 6 be formed (not shown in the drawing).
  • 3 shows a designed as an elongated leaf spring spring element 14 which, referring to the drawing sheet on the left, begins to move to the right along the course of the bearing surfaces 10 . 11 extends and in at least two attachment points 8th by means of a respective fastener 9 , in the form of a fastening screw on the battery housing 4 is fixed. In order between the attachment points 8th the desired spring force "F" to apply, has the elongated spring element 14 an approximately wave-shaped course with alternating troughs 16 and wave mountains 17 on, with one in an attachment point 8th arranged and as a mounting section 18 acting wave trough 16 and the following wave mountain 17 as a support section 19 acting wave trough 16 with following wave mountain 17 and if necessary in alternation so on. The conventional in the area of the support sections 19 intended fastening points 8th with fastening element 9 are dispensable in an advantageous manner. D. h., The said support sections 19 replace the conventional attachment points, so to speak 8th with fastening element 9 ,
  • In the present case, the attachment section 18 a through hole for the mounting screw on and is in the assembly on the support flange 15 the housing wall 6 supported. The support section 19 is between two attachment points 8th arranged and supported by spring force on the support flange 15 the housing wall 6 from. The elongated spring element 14 with the said wave-shaped course is preferably formed by a bent metal part made of steel. How very good 4 can be seen, this is formed by a flat or I-profile.
  • The embodiment of the invention according to 5 and 6 differs from the variant according to the 3 and 4 essentially in that the elongated spring element 14 by a U-profile (see esp. 6 ) is formed, whereby the spring element 14 with a particularly high spring force "F" is formed and beyond can be formed thin-walled.
  • However, the invention is not limited to spring elements 14 , which are formed by an elongated flat or I-profile or a U-profile, but also detects, for example, spring elements 14 from an elongated round profile (not shown in the drawing).
  • LIST OF REFERENCE NUMBERS
  • 1
    vehicle
    2
    electric motor
    3
    battery assembly
    4
    battery case
    5
    Housing bottom
    6
    housing
    7
    housing cover
    8th
    fastening point
    9
    fastener
    10
    bearing surface
    11
    bearing surface
    12
    face
    13
    support flange
    14
    spring element
    15
    support flange
    16
    trough
    17
    Wellenberg
    18
    attachment section
    19
    support section
    "F"
    Spring force
  • QUOTES INCLUDE IN THE DESCRIPTION
  • This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
  • Cited patent literature
    • DE 102011111229 A1 [0002]

Claims (9)

  1. Battery housing (4), with a housing lower part (5) and a housing cover (7), wherein the housing lower part (5) and the housing cover (7) having mutually corresponding bearing surfaces (10, 11) and in the region of said bearing surfaces (10, 11), optionally with the intermediary of a sealing element, laid one on top of the other and fixedly connected to each other in fixed attachment points (8) by means of a respective mechanical fastening element (9), characterized in that at least one of the attachment points (8) is associated with a spring element (14) which by means of the respective fastening point (8) associated fastening element (9) on the battery case (4) is fixed, wherein the spring element (14) locally from the housing outside her locally biased against the housing cover (7) in the lateral distance from said attachment point (8).
  2. Battery housing (4) after Claim 1 , characterized in that the spring element (14) in the region of said bearing surfaces (10, 11) of housing-outside locally locally biased against the housing cover (7).
  3. Battery housing (4) after Claim 1 or 2 , characterized in that the spring element (14) in two or more fastening points (8) by means of one fastening element (9) on the battery housing (4) is fixed, wherein the spring element (14) between each two adjacent attachment points (8) under bias on Housing cover (7) is applied.
  4. Battery housing (4) according to one of Claims 1 to 3 , characterized in that the spring element (14) is designed as an elongated leaf spring.
  5. Battery housing (4) after Claim 4 , characterized in that the spring element (14) in the form of the leaf spring in the respective attachment point (8) on the battery housing (4) fixed attachment portion (18) which at least partially adjacent one or both sides in a biased on the housing cover (7) Support section (19) passes.
  6. Battery housing (4) after Claim 4 or 5 , characterized in that the spring element (14) is formed from a flat or I-profile or from a U-profile.
  7. Battery housing (4) according to one of Claims 4 to 6 , characterized in that the spring element (14) is formed by a bent sheet metal part.
  8. Battery housing (4) according to one of Claims 1 to 7 , characterized in that the spring element (14) consists of a steel.
  9. Vehicle (1), in particular electric or hybrid vehicle, with at least one battery housing (4) according to one of Claims 1 to 8th ,
DE102017209729.9A 2017-06-08 2017-06-08 Battery case and vehicle with such a battery case Pending DE102017209729A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE102017209729.9A DE102017209729A1 (en) 2017-06-08 2017-06-08 Battery case and vehicle with such a battery case

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017209729.9A DE102017209729A1 (en) 2017-06-08 2017-06-08 Battery case and vehicle with such a battery case
CN201810587266.9A CN109037496A (en) 2017-06-08 2018-06-06 Battery cell case and the vehicles with battery cell case

Publications (1)

Publication Number Publication Date
DE102017209729A1 true DE102017209729A1 (en) 2018-12-13

Family

ID=64332961

Family Applications (1)

Application Number Title Priority Date Filing Date
DE102017209729.9A Pending DE102017209729A1 (en) 2017-06-08 2017-06-08 Battery case and vehicle with such a battery case

Country Status (2)

Country Link
CN (1) CN109037496A (en)
DE (1) DE102017209729A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011111229A1 (en) 2011-08-20 2013-02-21 GEDIA Gebrüder Dingerkus GmbH Battery enclosure for electric and hybrid vehicles
DE102012004135A1 (en) * 2012-02-29 2013-08-29 Volkswagen Aktiengesellschaft Battery box for traction battery used in e.g. hybrid car, has electrical conductive layers that are arranged on outer side of upper and lower shells to increase electromagnetic compatibility

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011111229A1 (en) 2011-08-20 2013-02-21 GEDIA Gebrüder Dingerkus GmbH Battery enclosure for electric and hybrid vehicles
DE102012004135A1 (en) * 2012-02-29 2013-08-29 Volkswagen Aktiengesellschaft Battery box for traction battery used in e.g. hybrid car, has electrical conductive layers that are arranged on outer side of upper and lower shells to increase electromagnetic compatibility

Also Published As

Publication number Publication date
CN109037496A (en) 2018-12-18

Similar Documents

Publication Publication Date Title
EP2916369A1 (en) Battery pack for electric vehicle
US6668490B2 (en) Lightweight door for motor vehicles
DE102017103371A1 (en) Battery assembly and method
US8246105B2 (en) Frontal structure for a motor vehicle
US8973980B2 (en) Load-bearing structural component for the body of a motor vehicle
US20110143179A1 (en) Battery case
EP2004453B1 (en) Crashbox and damping arrangement with a crashbox
DE102012100977B3 (en) Energy storage container i.e. box-shaped aluminum intake carrier, for carrying e.g. lithium-ion cells of energy store module in motor car, has base plate whose profiled element is connected to adjacent element simultaneously as side walls
US4801040A (en) Closure cover of plastic
CA2633320C (en) Battery box system and method
US20130313787A1 (en) Seal structure for grommet
DE202016102223U1 (en) battery case
EP1398215A1 (en) Gasket for a vehicle door mirror
US20070085376A1 (en) One piece running board bracket
DE102016103906A1 (en) Coverless battery assembly for electrified vehicle
EP1466770A1 (en) Sealing profile for a vehicle door to be mounted on a flange with at least one corner with a small bending radius
CN102602269B (en) Vehicle battery case
CN105835679A (en) Vehicle frame mounted high voltage battery assembly
JP5212086B2 (en) Battery case for electric vehicles
CN102555751A (en) Vehicle with structural battery pack
US7163073B2 (en) Air inlet conduit for a cooler of a vehicle
DE102016115627A1 (en) Battery carrier with cooling system
EP1350690A2 (en) Airbag module with elastically mounted gas generator
CN107076239B (en) Unit bearing, in particular for a motor vehicle
JP5530536B2 (en) Mounting leg cover for car seat

Legal Events

Date Code Title Description
R163 Identified publications notified
R012 Request for examination validly filed