• 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:
    It is a tempering device for individual, to a module (1) assembled battery cells (2), with a base body (3), for circumferentially enclosing the battery cells (2) two opposite, with respect to each joining axis in pairs opposite passage openings (6) having sealing elements (4, 5) and forms a transverse to the joining axes flow channel for a tempering fluid is described. In order to design a tempering device of the type described in such a way that at a lower manufacturing cost at the same time an increased tightness of the device is achieved even at higher flow rates of the tempering, it is proposed that the sealing elements (4, 5) are two identical moldings, which are point symmetrical to each other and via one support surface (7) connected to each other form the base body (3), wherein the support surface (7) on the inside of the body, a, a seal compensation area (8) having receiving groove (9) connects.
    公开号:AT520928A4
    申请号:T50457/2018
    申请日:2018-06-08
    公开日:2019-09-15
    发明作者:Kreisel Philipp；Kreisel Johann；Kreisel Markus
    申请人:Raiffeisenlandesbank Oberoesterreich Ag；
    IPC主号:
    专利说明:

    It is a temperature control device for individual battery cells (2) assembled to form a module (1), with a base body (3) which, for the peripheral encirclement of the battery cells (2), has two opposing sealing elements (6) that are opposite each other with respect to a joining axis (4, 5) and forms a flow channel running transversely to the joining axes for a temperature control fluid. In order to design a temperature control device of the type described at the outset in such a way that, with less manufacturing outlay, the device is also more tightly sealed even at higher flow rates of the temperature control fluid, it is proposed that the sealing elements (4, 5) are two identical molded parts which are aligned point-symmetrically to one another and connected to one another via a respective support surface (7) form the base body (3), a receiving groove (9) having a seal compensation area (8) adjoining the support surface (7) on the inside of the base body.
    (Fig. 1) / 23 (42007) KA
    The invention relates to a temperature control device for individual battery cells assembled into a module, with a base body which comprises two opposing sealing elements for circumferentially enclosing the battery cells, each of which has opposed passage openings with respect to a joining axis, and a flow channel for a temperature control fluid running transversely to the joining axes forms.
    Battery cells, particularly those based on lithium-ion technology, have a service life that is heavily dependent on the operating temperature, although temperature differences of 1 to 3 degrees Celsius can lead to significant aging. Especially when such battery cells are subjected to shock loads, it is therefore essential to rapidly dissipate the thermal energy which occurs as a result of the chemical processes in order to enable a long operating life. The use of fluid temperature control devices has proven to be very advantageous, not least to prevent a possible fire hazard, but such devices can usually only achieve slow control behavior because turbulence and resulting back pressures prevent faster flow speeds and the associated volume throughput. This is made more difficult by the use of volatile temperature control fluids, for which a secure seal is required.
    Temperature control devices for individual battery cells assembled in a module in a battery system, with a base body comprising two opposing sealing elements and forming a liquid space for the temperature control fluid supplied to the device, are known from the prior art. (WO / 23
    2017/067923 A1). The sealing elements for circumferentially enclosing the battery cells with respect to one joining axis each have opposite through openings, so that the individual battery cells are partially flowed around by the temperature control fluid, while the anode and the cathode for electrical contacting lie outside the main body. A disadvantage of the temperature control devices known from WO 2017/067923 A1 is therefore that extremely low manufacturing tolerances of the sealing elements and of the seals have to be observed in order to achieve sufficient tightness of the base body after assembly, compared to an increased system pressure due to the higher flow rate of the temperature control fluid thus preventing the temperature control fluid from escaping from the base body, which, however, involves an enormous amount of production engineering.
    The invention is therefore based on the object of designing a temperature control device of the type described at the outset in such a way that, with less production outlay, an increased tightness of the device is achieved even at higher flow rates of the temperature control fluid.
    The invention achieves the stated object in that the sealing elements are two mutually identical molded parts which are aligned symmetrically with respect to one another and connected to one another via a respective supporting surface, the basic body being connected to the supporting surface on the inside of the basic body, a receiving groove having a sealing compensation area.
    Due to the fact that the two sealing elements are designed as identical parts manufactured, for example, by injection molding with the same tool cavity, they have essentially identical component tolerances, which is why a separate adjustment of two different sealing elements to one another can be omitted. Typically, a common, circumferential edge seal would be provided for sealing two such sealing elements, which would, however, entail a high manufacturing outlay when joining the two sealing elements, because in both sealing elements receiving grooves are provided for the common edge seal / 23 and the surface pressure required for sealing between the edge seal and the respective receiving groove walls could only be ensured by an exact alignment of the common edge seal with the respective receiving grooves. According to the invention it is therefore provided that both sealing elements each have a separate circumferential edge seal which is inserted into the respective receiving groove. Because this results in the two edge seals being pressed against one another when the sealing elements are joined, which the person skilled in the art would regularly avoid to avoid leakage due to undesired deformation of the edge seals, a sealing compensation area is provided in the receiving groove adjoining the bearing surface on the inside of the base body, which area is not assembled state remains free and allows a predefined deformation of the edge seals. It is only when the two sealing elements are joined to one another and when sufficient surface pressure is reached that the sealing compensation area is at least partially filled by the respective edge seal. If the sealing compensation area is provided on the side of the receiving groove facing away from the bearing surface, it can also be avoided that the side walls of the sealing elements forming the bearing surfaces are deformed towards the outside of the base body and no longer seal flush, making it impossible to achieve a predefined surface pressure of the edge seals would.
    In order to enable a reliable seal even in the case of a larger seal compensation area in relation to the edge seal, it is proposed that the receiving groove have a positioning step for an edge seal that protrudes from the groove base and that the groove area that remains free above the positioning step forms the seal compensation area. This prevents an undesired displacement of the seal within the receiving groove, because the edge seal is fixed in the area of the groove base between a groove wall and the positioning step transversely to its longitudinal direction, while an elastic deformation of the edge seal body in the seal compensation area formed above the positioning step remains possible. In addition, the elastic deformation also causes the edge seal to be pressed against the positioning / 23 step, so that the seal between the edge seal and the receiving groove itself is improved.
    A particularly advantageous sealing effect with a simultaneous reduction of internal stresses is obtained if the edge seal has a sealing bead that falls below the bearing surface. As a result of these features, a second sealing compensation area is also formed on the outside of the base body, which adjoins the receiving groove, which enables an aligned transition of the side end walls of the two sealing elements which form the support surfaces even if an edge sealing bead which is more prominent than the contact surfaces is provided in order to achieve a higher surface pressure.
    In order to avoid damage to the passage seals running in the circumferential direction of the passage openings, in particular when joining the battery cells, the sealing elements can each have support pins projecting between three adjacent passage openings on the inside of the base body and extending in the direction of the joining axes, which have a support body for the circumferential direction in the transition area to the passage openings Form passage openings extending passage seals. On the one hand, the support pins lying one on top of the other in the assembled state prevent deformation of the sealing elements in the event of a load on the force due to the insertion of a battery cell in the direction of the joining axes and the associated twisting of the passage seals. On the other hand, the support bodies form a defined contact surface for the passage seals, so that they have a defined position before assembly, do not influence one another during assembly and after the battery cells are inserted, and thus achieve a predetermined surface pressure with respect to the battery cells used. By combining the two features, damage to the passage seals during assembly is avoided because the passage seals do not protrude unevenly into the receiving areas for the battery cells to be used and can thus be sheared off or even torn off during assembly. In order not to unnecessarily worsen the flow properties of the temperature control fluid through the support pins, these can only be arranged in the area of the passage openings first made with battery cells according to the predetermined joining scheme. Of course, however, support bodies can also be arranged where no support pins are provided in this case.
    Particularly advantageous manufacturing conditions result when the edge seal is connected to the receiving groove in the multi-component injection molding process. For example, the edge seal as a soft component can be a thermoplastic elastomer, while the receiving groove can be designed as a hard component as polyoxymethylene. This results in a seal between the receiving groove and the edge seal injected therein, regardless of the surface pressure.
    For even better manufacturing conditions and an improved sealing of the battery cells, the passage seals can also be connected to the support bodies in a multi-component injection molding process. As a result of these measures, there is a seal between the passage openings and the passage seals, regardless of the surface pressure. Likewise, penetration of the passage seals into the receiving area of the battery cells and thus shearing or tearing off during the joining process of the battery cells is avoided. Particularly favorable manufacturing conditions and a high sealing effect result if both the edge seal and the passage seals are designed as thermoplastic elastomers in the sense of a soft component and the receiving groove or support body as polyoxymethylene in the sense of a hard component. It can also be provided that the hard and soft components are connected to one another via an additionally injection-molded, adhesion-promoting intermediate component.
    In order to be able to avoid punctual loads on the seals in order to improve the sealing, in particular in the case of additional internals in the flow channel, it is proposed that the sealing elements each have a temperature-control fluid connection and a flow divider opposite the temperature-control fluid connection of the other sealing element, which is oriented symmetrically / 23. Tempering fluid connections running in the direction of the joining axes have the advantage that there is a particularly compact design of modules made up of individual battery cells and thus a high power density, because there is no need to provide tempering fluid connections projecting beyond the cross section of the modules in the direction of the joining axes and the connecting lines between the Modules can be kept particularly short. According to the invention, there are particularly advantageous design conditions in this connection if the temperature-control fluid connections form female push-on sleeves, so that, due to the identical sealing elements, two successive base bodies can be fluidly connected to one another via a male connecting piece inserted into the two push-on sleeves. At higher flow velocities, however, turbulence and consequent dynamic pressures occur in the flow channel and at the temperature control fluid connections. In addition, a uniform flow against all battery cells in the flow channel is not guaranteed. By providing a flow divider according to the invention in relation to the respective temperature control fluid connection, not only can the temperature control fluid flow be deflected as swirl-free as possible from the direction of the joining axes into the longitudinal direction of the flow channel, but also the fluid flow as a whole can be divided into several partial flows, which results in the occurrence of pressure peaks in the region of the Avoid seals.
    In this context, particularly advantageous flow conditions can be created if the flow divider has a main guide ridge running essentially radially to a first passage opening adjoining the flow divider. As a result, the temperature-control fluid flow is divided along the two flanks of the ridge and flows around the first battery cell in two partial streams running tangentially to the battery cell, which reduces harmful pressure peaks as a result of a dynamic pressure which results radially to the first battery cell. As a result, the first, but also the subsequent cells can be better flowed around by the temperature control fluid. This also results in a better / 23
    Tightness of the module, as it is ensured that the seals are not exposed to unnecessarily high flow pressures.
    In order to further reduce pressure peaks that occur and in particular to enable a uniform flow to the battery cells located at the edge of the flow channel, it is proposed that the flow divider comprise two secondary guide ridges that run symmetrically to the main guide ridge and each essentially radially to a secondary passage ridge that adjoins the first passage opening. As a result of this measure, a total of four partial flows are formed, of which the edges lying against the inner wall of the base body and the battery cells located in the edge region of the flow channel flow tangentially around their outer surfaces facing the inner wall of the base body. To further reduce backpressures, the crest of the main guide ridge and / or the secondary guide ridges can widen from the temperature control fluid connection area to the adjacent passage openings, because only when the fluid flow directly hits the temperature control fluid connection, the fluid flow needs to be split up, while the individual partial flows subsequently result should be separated from each other to such an extent that they flow essentially tangentially to the battery cells to be flushed. It goes without saying that the geometries of both main and secondary combs can be designed differently in the course of flow optimization, or additional secondary combs can also be provided.
    The subject matter of the invention is shown in the drawing, for example. Show it
    1 is a schematic representation of a temperature control device according to the invention,
    2 shows a schematic side view of an assembled module on a larger scale, / 23
    3 is an enlarged detail view of FIG. 1 with sealing elements not assembled,
    Fig. 4 shows a further enlarged detail view of FIG. 1 with joined sealing elements and
    FIG. 5 is an enlarged detail view of a flow divider shown in FIG. 1.
    A temperature control device according to the invention for individual battery cells 2 assembled to form a module 1 comprises a base body 3 with two opposing sealing elements 4, 5. To enclose the battery cells 2 on the circumference, the sealing elements 4, 5 have mutually opposite passage openings 6 with respect to a joining axis. The base body 3 forms a flow channel running transversely to the joining axes for a temperature control fluid for temperature control of the battery cells 2. The sealing elements 4, 5 are designed as two, for example injection molded, identical parts. When they are assembled, they are aligned point-symmetrically to one another, connected to each other via a circumferential support surface 7 and thus form the base body 3
    On the inside of the base body, a receiving groove 9, which has a sealing compensation area 8, adjoins the bearing surface 7. A peripheral edge seal 10 is inserted into the respective receiving groove 9 of the sealing elements 4, 5. Particularly favorable manufacturing conditions and a good seal between the edge seal 10 and the receiving groove 9 result if the edge seal 10 is connected to the receiving groove 9 in a multi-component injection molding process, the edge seal 10 being a soft component, for example in the form of a thermoplastic elastomer, and the receiving groove 9 a Represent hard component in the form of, for example, polyoxymethylene.
    The sealing elements 4, 5 also each have between three adjacent through openings 6 protruding inside the base body and extending in the direction of the joining axes supporting pins 11, which form a supporting body 13 in the transition region 12 to the through openings 6 for the through seals 14 extending in the circumferential direction of the through openings 6. In the assembled state / 23, the support pins 11 rest on one another with their respective contact surfaces 15. The support bodies 13 can also be provided in the transition areas 16 without support pins. As can be seen in FIG. 1, the support pins 11 can be reinforced by three webs 17 each extending to the transition area 12 for better pressure distribution. Analogous to the edge seal 10 and the receiving groove 9, the passage seals 14 can also be connected to the support bodies 13 in the multi-component injection molding process.
    FIG. 2 shows an assembled module 1 with battery cells inserted through the passage opening 6 and enclosed on the circumference by the passage seals 14
    Second
    As can be seen in particular in FIGS. 3 and 4, the receiving groove 9 has a positioning step 19 protruding from the groove base 18 for an edge seal 10. The groove area 20 that remains free above the positioning step 19 forms the seal compensation area 8. When the two seal elements 4, 5 are joined together, some of the edge seals 10 that come to lie on one another and that deform elastically due to the required surface pressure can escape into the seal compensation area 8, as shown in FIG 4 is shown. The edge seal 10 can also have a sealing bead 21 which slopes down towards the bearing surface 7, so that a second sealing compensation area 22 is formed which adjoins the receiving groove 9 on the outside of the base body.
    FIG. 5 shows a detailed view of a flow divider 23 according to the invention shown in FIG. 1 in a sealing element 4. The flow divider 23 comprises a main guide comb 24 and secondary guide combs 25. Both the main guide comb 24 and the secondary guide combs 25 each have an adjacent one Passages 6 widening apex 26 on. 1 also shows that the comb cross section of both the main guide comb 24 and the secondary guide combs 25 increases in the direction of the respectively adjacent passage openings 6. The sealing elements 4, 5 also each have a temperature control fluid connection 27, so that in the assembled state, a temperature control fluid connection / 23 of the one sealing element 4 is opposite the flow divider 23 of the other sealing element 5.
    The temperature control fluid connections 27 can form female push-on sleeves 28, so that, due to the identical sealing elements 4, 5, two successive base bodies can be fluidly connected to one another via a male connecting piece inserted into the two push-on sleeves 28/23
    patent attorneys
    Dipl.-Ing. Helmut Hübscher
    Dipl.-Ing. Gerd pretty
    Dipl.-Ing. Karl Winfried Hellmich
    Spittelwiese 4, 4020 Linz (42007) KA
    claims
    1.Tempering device for individual battery cells (2) assembled to form a module (1), with a base body (3) which has two opposing sealing elements (6) opposite each other for the circumferential enclosing of the battery cells (2), each with a pair of opposing through-openings (6) 4, 5) and forms a flow channel for a temperature control fluid which runs transversely to the joining axes, characterized in that the sealing elements (4, 5) are two mutually identical molded parts which are aligned point-symmetrically to one another and connected to one another via a contact surface (7) Form the base body (3), a receiving groove (9) having a seal compensation area (8) adjoining the support surface (7) on the inside of the base body.
    2. Temperature control device according to claim 1, characterized in that the receiving groove (9) has a protruding from the groove base (18) positioning step (19) for an edge seal (10) and that the free above the positioning step (19) groove area (20) Seal compensation area (8) forms.
    3. Temperature control device according to claim 1 or 2, characterized in that the edge seal (10) has a, towards the support surface (7) under this falling sealing bead (21).
    4. Temperature control device according to one of claims 1 to 3, characterized in that the sealing elements (4, 5) each have between three adjoining through openings (6) protruding inside the base body / 23 and extending in the direction of the joining axes support pins (11) in the transition area ( 12) form a support body (13) for the passage openings (6) for the passage seals (14) running in the circumferential direction of the passage openings (6).
    5. Temperature control device according to one of claims 1 to 4, characterized in that the edge seal (10) with the receiving groove (9) is connected in a multi-component injection molding process.
    6. Temperature control device according to claim 4 or 5, characterized in that the passage seals (14) with the support bodies (13) are connected in a multi-component injection molding process.
    7. Temperature control device according to one of claims 1 to 6, characterized in that the sealing elements (4, 5) each have a tempering fluid connection (27) and the tempering fluid connection (27) of the point-symmetrically oriented other sealing element (5) opposite flow divider (23) ,
    8. The temperature control device according to claim 7, characterized in that the flow divider (23) has a main guide comb (24) extending essentially radially to a first passage opening (6) adjoining the flow divider (23).
    9. Temperature control device according to claim 8, characterized in that the flow divider (23) comprises two secondary guide combs (25) which run symmetrically to the main guide comb (24) and each essentially radially to a passage opening (6) adjoining the first passage opening (6).
    / 23
    FIG.1
    12/23
    FIG. 2
    / 23
    / 23
    FIG. 5
    / 23
    patent attorneys
    Dipl.-Ing. Helmut Hübscher Dipl.-Ing. Gerd Hübscher Dipl.-Ing. Karl Winfried Hellmich Spittelwiese 4, 4020 Linz
    A50457 / 2018 (42007) KA
    权利要求:
    Claims (9)
    [1]
    1.Tempering device for individual battery cells (2) assembled to form a module (1), with a base body (3) which has two opposing sealing elements (6) opposite each other for the circumferential enclosing of the battery cells (2), each with a pair of opposing through-openings (6) 4, 5) and forms a flow channel for a temperature control fluid which runs transversely to the joining axes, characterized in that the sealing elements (4, 5) are two mutually identical molded parts which are aligned point-symmetrically to one another and connected to one another via a contact surface (7) Form the base body (3), a receiving groove (9) having a seal compensation area (8) adjoining the support surface (7) on the inside of the base body.
    [2]
    2. Temperature control device according to claim 1, characterized in that the receiving groove (9) has a protruding from the groove base (18) positioning step (19) for an edge seal (10) and that the free above the positioning step (19) groove area (20) Seal compensation area (8) forms.
    [3]
    3. Temperature control device according to claim 1 or 2, characterized in that an edge seal (10) has a, towards the support surface (7) under this falling sealing bead (21).
    [4]
    4. Temperature control device according to one of claims 1 to 3, characterized in that the sealing elements (4, 5) each projecting between three adjacent through openings (6) inside the body
    18/23 __________________________________________ [LAST CLAIMS] and support pins (11) running in the direction of the joining axes, which in the transition area (12) to the passage openings (6) have a support body (13) for the passage seals running in the circumferential direction of the passage openings (6) ( 14) form.
    [5]
    5. Temperature control device according to one of claims 1 to 4, characterized in that an edge seal (10) with the receiving groove (9) is connected in a multi-component injection molding process.
    [6]
    6. Temperature control device according to claim 4 or 5, characterized in that the passage seals (14) with the support bodies (13) are connected in a multi-component injection molding process.
    [7]
    7. Temperature control device according to one of claims 1 to 6, characterized in that the sealing elements (4, 5) each have a tempering fluid connection (27) and the tempering fluid connection (27) of the point-symmetrically oriented other sealing element (5) opposite flow divider (23) ,
    [8]
    8. The temperature control device according to claim 7, characterized in that the flow divider (23) has a main guide comb (24) extending essentially radially to a first passage opening (6) adjoining the flow divider (23).
    [9]
    9. Temperature control device according to claim 8, characterized in that the flow divider (23) comprises two secondary guide combs (25) which run symmetrically to the main guide comb (24) and each essentially radially to a passage opening (6) adjoining the first passage opening (6).
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    同族专利:
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    WO2019232557A1|2019-12-12|
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    CN112136229A|2020-12-25|
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4342460A|1978-03-30|1982-08-03|Hooker Chemicals & Plastics Corp.|Gasket means for electrolytic cell assembly|
    EP1032065A2|1999-02-27|2000-08-30|Firma Carl Freudenberg|Sealing arrangement for thin large area parts|
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    DE102015013377A1|2015-10-18|2017-04-20|Kreisel Electric GmbH|Temperature control device for a battery system|
    DE202016107089U1|2016-12-16|2017-01-13|Trelleborg Sealing Solutions Germany Gmbh|Battery holder for rod-shaped batteries and battery module, in particular for electromobility applications|AT523543B1|2020-08-10|2021-09-15|Kreisel Electric Gmbh & Co Kg|Temperature control device for individual battery cells combined to form a module|
    AT523635B1|2020-09-18|2021-10-15|Kreisel Electric Gmbh & Co Kg|Temperature control device for battery cells combined to form a module|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50457/2018A|AT520928B1|2018-06-08|2018-06-08|Temperature control device for individual, assembled into a module battery cells|ATA50457/2018A| AT520928B1|2018-06-08|2018-06-08|Temperature control device for individual, assembled into a module battery cells|
    PCT/AT2019/050018| WO2019232557A1|2018-06-08|2019-05-09|Temperature-control device for individual battery cells which are combined into a module|
    EP19727580.3A| EP3804001A1|2018-06-08|2019-05-09|Temperature-control device for individual battery cells which are combined into a module|
    US17/054,767| US20210249706A1|2018-06-08|2019-05-09|Temperature-control device for individual batterycells which are combined into a module|
    JP2020567902A| JP2021527297A|2018-06-08|2019-05-09|Temperature control device for individual battery cells integrated in one module|
    CN201980033355.1A| CN112136229A|2018-06-08|2019-05-09|Temperature control device for individual battery blocks assembled into a module|
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