• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A device for independently contacting two battery cells with a base body having a passage opening (6) is described. In order to enable not only a simpler, more modular assembly process, but also a quick replacement of individual battery cells, it is proposed that the base body (1) have two receptacle bodies (2, 3) opposite each other with respect to the passage opening (6) for encompassing one end section of the circumference in each case has a battery cell inserted in a joining direction, a contact spring (7) being inserted into a guide passage (9) of the first receiving body (2) which is inserted into the passage opening (6) for the integral connection of the contact spring (7) with the battery cell inserted into the second receiving body (3), and that the contact spring (7) forms contact tongues (8) for releasably connecting the battery cell inserted into the first receiving body (2).
    公开号:AT521257A4
    申请号:T51060/2018
    申请日:2018-11-30
    公开日:2019-12-15
    发明作者:Waldschütz Gerhard
    申请人:Raiffeisenlandesbank Oberoesterreich Ag；
    IPC主号:
    专利说明:

    Summary
    A device for independently contacting two battery cells with a base body having a passage opening (6) is described. In order to enable not only a simpler, more modular assembly process, but also a quick exchange of individual battery cells, it is proposed that the base body (1) have two receiving bodies (2, 3) opposite one another with respect to the passage opening (6) for gripping around one end section of each in has a battery cell inserted in a joining direction, a contact spring (7) being inserted into a guide passage (9) of the first receiving body (2) which is inserted into the passage opening (6) for the integral connection of the contact spring (7) with the battery cell inserted into the second receiving body (3), and that the contact spring (7) forms contact tongues (8) for releasably connecting the battery cell inserted into the first receiving body (2).
    (Fig. 1) / 15 (42304) IV
    The invention relates to a device for independently contacting two battery cells, with a base body having a passage opening.
    For connecting individual battery cells to form a battery storage module, it is known (EP3096372A1) to arrange the battery cells on the head side in receiving spaces of a contact plate and to electrically connect them in series via contact springs to a second battery cell arranged in the joining direction of the first battery cell. A parallel connection of several such battery doublets connected in series takes place via an electrically conductive parallel plate which connects the contact springs to one another. A disadvantage of this construction, however, is that, apart from the associated assembly effort for replacing only one faulty battery cell, for example, the integral connections of all battery cells must be released in order to be able to remove and replace the faulty battery cell from the assembly.
    The invention is therefore based on the object of proposing a device for contacting battery cells which can be connected to a battery storage module and which not only enables a simpler, more modular assembly process, but also a rapid exchange of individual battery cells.
    The invention achieves the stated object in that the base body has two receptacle bodies opposite one another with respect to the passage opening for circumferentially encompassing one end section of the battery cells inserted into the receptacle body in a joining direction, a contact spring being inserted into a guide passage of the first receptacle body, which extends into the passage opening for materially connecting the contact spring to / 15 of the battery cell inserted in the second receiving body, and that the contact spring forms contact tongues for releasably connecting the battery cell inserted in the first receiving body. The base body of the device according to the invention has two receiving bodies which encompass the end sections of two battery cells on the circumference. In order to electrically connect two opposite poles of these battery cells in a short way, the base body also comprises a passage opening for a contact spring, which is detachably connected to the battery cell inserted into the receiving space of the first receiving body and through the passage opening of the base body to the one in the receiving space of the second receptacle inserted battery cell is cohesive and thus permanently connected. In order to facilitate a cohesive connection, the contact spring is positioned for positioning in a guide passage that runs on the bottom of the first receiving body and adjoins the passage opening. The detachable connection with the battery cell inserted in the first receiving body can in principle be carried out in different ways, but particularly advantageous joining conditions result, however, if the contact spring forms contact tongues which bear resiliently on the battery cell used. A particularly secure fit of the battery cell in the receiving space of the first receiving body is obtained if the contact tongues protrude against the joining direction and grip the inserted battery cell around the circumference under pre-tension. Accordingly, the features of the invention result in a particularly advantageous joining process, because first one of the battery cells to be contacted electrically can be introduced into the receiving space of the second receiving body, after which the contact spring is inserted into the guide passage of the first receiving body opposite with respect to the passage opening. Then the end section of the contact spring protruding into the passage opening is cohesively connected to a cell pole of the introduced battery cell. The first battery cell prepared in this way can then simply be connected to a further battery cell by inserting it into the receiving space of the first receiving body, the contact tongues making electrical contact with the further battery cell possible.
    / 15
    In order to better mechanically decouple the battery cells from one another both transversely to and in the joining direction, it is proposed that the guide path runs spirally around the passage opening and receives the contact spring with play transversely to the joining direction. This means that the contact spring is also designed in a spiral shape, thus making it easier for it to expand in the joining direction. In addition, if the spring cross section is suitably dimensioned, a fuse is provided.
    In order to prevent adjacent cells from being impaired in the event of a fault, the guide aisle to the receiving space of the first receiving body can be covered by fire protection. On the one hand, this prevents heat development in the contact spring, in particular in the case of a design as a fuse, from being transferred to the battery cell inserted in the first receiving body. On the other hand, if the battery cell inserted into the second receiving body is damaged, a chain reaction can be avoided that escaping hot gas or even escaping flames get through the passage opening into the receiving space of the first receiving body if the fire protection covers not only the guide aisle, but also the passage opening.
    In order to avoid mechanical overdetermination of the contact spring in the receiving space of the first receiving body and to avoid introducing all the necessary clamping forces into the contact spring in spite of a space-saving, form-fitting reception of the battery cell, it is proposed that the contact tongues of the contact spring move from the guide path against the joining direction in the circumferential area to the receiving space protrude adjacent recesses of the first receiving body. Therefore, a direct contact of the jacket of the battery cell with a large part of the inside of the jacket surface of the first receiving body can be achieved, whereby a sufficiently high stability of the plug-in mechanism is achieved in that the jacket of the battery cell is surrounded on the one hand by the contact tongues with a sufficiently high bias and on the other hand permanent positive connection between the first / 15th
    Receiving body and the battery cell is favored. Nevertheless, according to the
    Design the contact tongues relative to the base body or the first
    Support body movable with play.
    In order to prevent damage to the integral connection between the contact spring and the battery cell received by the second receiving body, it is recommended in a particularly advantageous embodiment of the device according to the invention that the second receiving body protrudes in its receiving space for engaging in a groove in the receiving space of the receiving body used battery cell forms. As a result, the freedom of movement of the battery cell which is integrally connected to the contact spring is restricted in the joining direction, as a result of which breakage of the contact spring or the material connection is prevented.
    So that in the event of outgassing of the gas quantities generated in the receiving space of the second receiving body, gas quantities can be reliably discharged and a compact design of the device according to the invention can nevertheless be achieved, it is proposed that the base body between the second receiving body, the guide passage and the passage opening, has the receiving space of the second receiving body with at least one jacket-side degassing opening of the main body connecting degassing channel. This means that at least the degassing openings are arranged in the joining direction at the level of the guide passage or at the level of the passage opening. In order to avoid punctual pressure peaks and at the same time to reduce the outflow velocities, the cross section of the degassing channel can widen towards one or more degassing openings.
    In order to prevent a gas flow to the first receiving body, the base body can form a guide surface for introducing hot gas flowing out of the battery cell inserted into the receiving space of the second receiving body into the degassing channel. For this purpose, the guide surface is designed such that the hot gas flowing out of the degassing valve of the battery cell inserted into the receiving space of the second receiving body is discharged from the passage opening of the base body and introduced into the degassing duct. To improve the flow conditions, the receiving space of the second receiving body can be delimited by fire protection, with the formation of a flow opening relative to the degassing channel, which can consist, for example, of mica or alternative materials that are obvious to the person skilled in the art.
    In order to facilitate the insertion of a battery cell into the receiving space of the second receiving body, it is proposed that the second receiving body form locking arms which encompass the peripheral area and protrude from the basic body. The free space resulting between the locking arms can form degassing openings for the degassing channel.
    For an exact positioning of the contact spring section to be connected before the material connection is received, it is advantageous if the contact spring forms clamping fins at its end section opening into the passage opening. Due to the fact that the contact spring is therefore only positioned under prestress within the passage opening, it remains displaceable with play, so that a mechanical load on the electrical contact spring is avoided despite the positioning aid.
    So that the assembly process in a module made up of several battery cells is made easier on the one hand and on the other hand the exchange of individual battery cells is made possible regardless of their position in the module, a module with several devices according to the invention can be provided, which has a carrier with several recesses for circumferential, detachable gripping of the second Has receiving body. The carrier arranged in this way can prevent the loosening of the groove-locking body connection between the second receiving body and the battery cell if the cutouts form limit stops for the second receiving body transversely to the joining direction. In the simplest case / 15, the cutouts form-fit around the second receiving bodies. For assembly, a battery cell can first be inserted into the second receiving body in the devices according to the invention, as described above, after which the material connection between the contact spring and this first battery cell is established. The devices with the first battery cells can then be inserted into the cutouts in the carrier, after which further battery cells are inserted into the first receiving bodies projecting beyond the carrier. If a battery cell of the module is defective, the affected device can be detached from the carrier plate independently of the other devices and a corresponding exchange can be carried out. For a uniform height alignment of the various devices according to the invention on the carrier, the respective second receiving bodies can form stop surfaces which act in the joining direction.
    In order to enable equipotential bonding in spite of the modular design, it is proposed that the battery cells inserted into the first receptacle body are connected via their cell jacket by an electrically contacting contact unit. This contact unit can be spaced from the carrier and, together with it, form a flow channel into which the individual degassing openings of the devices according to the invention open.
    The subject matter of the invention is shown in the drawing, for example. Show it
    1 shows the device according to the invention with a battery cell accommodated in the receiving space of the second receiving body,
    Fig. 2 shows a section corresponding to line II-II of Fig. 1 through two battery cells connected in series via the device according to the invention and
    Fig. 3 shows a detail of a module composed of devices according to the invention.
    The device according to the invention for independently contacting two battery cells comprises a base body 1 which has a first receiving body 2/15 and a second receiving body 3, which encompass the end sections of the respective battery cells on the circumference. The contacting of the battery cells inserted into the receiving spaces 4, 5 of the receiving bodies 2, 3 takes place via a contact spring 7, which is guided through a through opening 6. For this purpose, the contact spring 7 has contact tongues 8 which protrude against the joining direction and clamp a battery cell assigned to the first receiving body 2 reach around, and protrudes through the passage opening 6 of the base body 1, whereby a cohesive connection of the contact spring 7 with a battery cell inserted into the receiving space 5 of the receiving body 3 is made possible by, for example, welding or soldering processes. In order to facilitate the cohesive contacting, the contact spring 7 is arranged in a guide passage 9 running on the bottom of the first receiving body 2.
    The device according to the invention results in particularly advantageous assembly conditions. Thus, in a first assembly step, the contact spring 7 is inserted into the guide aisle 9, whereupon a first battery cell is inserted into the receiving space 5 of the second receiving body 3. Due to the initially free accessibility of the receiving space 4 of the first receiving body 2, the cohesive contacting of this battery cell with the contact spring 7 can be carried out in a simple manner. In the last step, a further battery cell is inserted into the receiving space 4 of the first receiving body 2, the contact being made releasably via the clamping contact tongues 8. So that the entire required clamping force not only has to be applied by the contact tongues 8, these can protrude from recesses 10 which are incorporated in the first receiving body 2 and adjoin the receiving space 4. As a result, the battery cell clamped around by the contact tongues 8 of the contact spring 7 is additionally fixed by a positive connection between the first receiving body 2 and the battery cell.
    As can be seen in FIG. 1, both the guide aisle 9 and the contact spring 7 arranged therein can be designed spirally, whereby mechanical decoupling is achieved in the joining direction. Should the mechanical / 15
    Decoupling not only in, but also across the joining direction, the guide path 9 can be dimensioned such that the contact spring 7 arranged therein can be displaced with play transversely to the joining direction, as can be seen in FIG. 2. So that, despite this play, the cohesive connection between the contact spring 7 and the battery cell accommodated by the second receiving body 3 can be carried out exactly, the contact spring 7 forms clamping fins 11 at its end section projecting into the passage opening 6. The battery cell can be inserted into this second receiving body 3 in a particularly simple and gentle manner if it forms locking arms 12 which encompass the battery cell on the circumference.
    2 shows two battery cells connected in series via the device according to the invention. In order that a mutual impairment of the neighboring battery cells can be prevented, the devices shown in FIG. 2 have fire protection 13, which covers the guide aisle 9 and in this embodiment also the passage opening 6. A further fire protection 13 can be arranged between the battery cell accommodated in the receiving space 5 of the second receiving body 3 and the degassing duct 14 adjoining it, this fire protection 13, which, for example, consists of mica or other refractory materials that are obvious to the person skilled in the art, provides a breakthrough for the integral connection must have the battery cell with the contact spring 7. The cross section of the degassing channel 14 arranged between the receiving space 5, the guide passage 9 and the passage opening 6 widens towards the degassing opening arranged on the jacket side on the second receiving body 3 in the direction of the base body 1, so that selective pressure peaks can be avoided, despite a compact design of the device according to the invention. As shown in FIGS. 2 and 3, the degassing duct 14 can adjoin a guide surface 15 formed by the base body 1, thereby favoring a targeted deflection of a hot gas flowing out of the battery cell into the degassing duct 14.
    / 15
    3 shows a section of a module composed of several devices according to the invention. For this purpose, a carrier plate 16 used as a carrier has a plurality of recesses which encompass the second receiving bodies 3 of the devices, thereby preventing the latching bodies 17 of the second receiving bodies 3 from being unintentionally released from grooves 18 machined into the battery cells. For a uniform height alignment, the respective second receiving bodies 3 can form stop surfaces 19 acting in the joining direction. In an alternative embodiment of the carrier plate 16 shown in FIG. 3, its cutouts can encompass both the receiving body 3 and the battery cells arranged therein. The battery cells inserted into the first receiving body 2 can be connected to one another via their cell jacket by a contact unit 20, which can be arranged on a parallel plate 21 acting as a support. For correct detachable contacting, it is advisable for the contact unit to have 20 cutouts which encircle the battery cells on the circumference. In order to ensure a particularly secure fit, the contact unit 20, as shown in FIG. 3, can form contact tongues 8 which grip the battery cells arranged in the cutouts in a resilient manner.
    The device according to the invention enables the replacement of individual battery cells regardless of their position in the module. In the event of damage to a battery cell, the contact unit 20 is released from the cell shells of the battery cells which have been combined to form a module. After the detachably connected battery cell has been pulled out of the receiving space 4 of the receiving body 2, the device according to the invention with the remaining, defective and cohesively connected battery cell is freely accessible. The device can then be removed from the carrier plate 16 by pulling it out, which enables the defective battery cell to be replaced. The position of the devices of the intact battery cells according to the invention remains unchanged. The device according to the invention is assembled into a module in the reverse order.
    / 15
    patent attorneys
    Dipl.-Ing. Helmut Hübscher
    Dipl.-Ing. Gerd pretty
    Dipl.-Ing. Karl Winfried Hellmich
    Spittelwiese 4, 4020 Linz (42304) IV
    权利要求:
    Claims (12)
    [1]
    claims
    1. Device for independently contacting two battery cells, with a base body (1) having a passage opening (6), characterized in that the base body (1) has two receiving bodies (2, 3) opposite one another with respect to the passage opening (6) for circumferential gripping around each End portion of the battery cells inserted in a joining direction into the receiving bodies (2, 3), a contact spring (7) being inserted into a guide passage (9) of the first receiving body (2) which is inserted into the passage opening (6) for the integral connection of the contact spring (7) opens into the battery cell inserted into the second receiving body (3), and that the contact spring (7) forms contact tongues (8) for releasably connecting the battery cell inserted into the first receiving body (2).
    [2]
    2. Device according to claim 1, characterized in that the guide path (9) extends spirally around the passage opening (6) and the contact spring (7) receives with play transverse to the joining direction.
    [3]
    3. Device according to claim 1 or 2, characterized in that the guide passage (9) to the receiving space (4) of the first receiving body (2) is covered by a fire protection (13).
    [4]
    4. Device according to one of claims 1 to 3, characterized in that the contact tongues (8) of the contact spring (7) from the guide path (9) against the joining direction in the circumferential, on the receiving space (4) adjacent recesses (10) of the first receiving body Protrude (2).
    11/15
    [5]
    5. Device according to one of claims 1 to 4, characterized in that the second receiving body (3) in its receiving space (5) protruding locking body (17) for engagement in a groove (18) of the battery cell inserted into the receiving space of the receiving body.
    [6]
    6. Device according to one of claims 1 to 5, characterized in that the base body (1) between the second receiving body (3), the guide path (9) and the passage opening (6) one, the receiving space (5) of the second receiving body ( 3) with at least one degassing opening (14) connecting the degassing opening of the base body (1).
    [7]
    7. The device according to claim 6, characterized in that the base body (1) forms a guide surface (15) for introducing hot gas flowing out of the battery cell into the receiving space (5) of the second receiving body (3) into the degassing channel (14).
    [8]
    8. Device according to one of claims 1 to 7, characterized in that the second receiving body (3) forms the receiving space (5) around the circumferential side, from the base body (1) projecting locking arms (12).
    [9]
    9. Device according to one of claims 1 to 8, characterized in that the contact spring (7) forms clamping fins (11) at its end section opening into the passage opening (6).
    [10]
    10. Module with a plurality of devices according to one of the preceding claims, characterized by a carrier which has a plurality of cutouts for detachable gripping around the circumference of the second receiving body (3).
    [11]
    11. The module as claimed in claim 10, characterized by a contact unit (20) which makes electrical contact with the battery cells B inserted into the first receiving body via their cell jacket.
    [12]
    12/15
    类似技术:
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    同族专利:
    公开号 | 公开日
    EP3888157A1|2021-10-06|
    US20220029237A1|2022-01-27|
    AT521257B1|2019-12-15|
    CN113056840A|2021-06-29|
    WO2020107043A1|2020-06-04|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP3096372A1|2015-05-02|2016-11-23|Kreisel Electric GmbH|Battery module and battery system|
    US20170229688A1|2016-02-05|2017-08-10|ALTe Technologies, Inc.|Expandable battery module|
    CN205406609U|2016-03-10|2016-07-27|七台河市华夏电子高科技有限公司|Lithium -ion battery pack|
    CN206992187U|2017-06-30|2018-02-09|苏州安靠电源有限公司|Lithium ion battery module and high capacity lithium ion battery|EP3890102A1|2020-03-30|2021-10-06|Kreisel Electric GmbH & Co KG|Device with a frame comprising receptacles for the front end sections of battery cells aligned parallel with respect to their longitudinal axis|
    DE102020206977A1|2020-06-04|2021-12-09|Robert Bosch Gesellschaft mit beschränkter Haftung|Battery module with a plurality of battery cells|
    DE102020206979A1|2020-06-04|2021-12-09|Robert Bosch Gesellschaft mit beschränkter Haftung|Battery cell and battery module|US6677728B2|2002-04-12|2004-01-13|Honda Giken Kogyo Kabushiki Kaisha|Battery box and battery holder having detachable ring-shaped members|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA51060/2018A|AT521257B1|2018-11-30|2018-11-30|Device for independently contacting two battery cells|ATA51060/2018A| AT521257B1|2018-11-30|2018-11-30|Device for independently contacting two battery cells|
    PCT/AT2019/060361| WO2020107043A1|2018-11-30|2019-10-29|Device for releasably contacting two battery cells|
    US17/297,324| US20220029237A1|2018-11-30|2019-10-29|Device for releasably contacting two battery cells|
    CN201980075641.4A| CN113056840A|2018-11-30|2019-10-29|Device for detachably contacting two battery cells|
    EP19802030.7A| EP3888157A1|2018-11-30|2019-10-29|Device for releasably contacting two battery cells|
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