• 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:
    The invention relates to a tempering device (1) for a battery system, at least comprising a rectangular hollow body (2) with at least one connection device (3) for supplying and at least one connection device (4) for discharging a separately tempered fluid, a plurality of regularly arranged and identically designed , Breakthroughs (7) extending from a first body surface (5) to a second body surface (6), wherein from each opening (7) a cylindrical battery cell (8) is received, so that a fluid-tight liquid space is formed, characterized in that the hollow body (2), excluding the cell head (11) and the cell bottom (12), extends over a height h of> 20 to <100%, the total height H of the battery system.
    公开号:AT16119U1
    申请号:TGM50141/2018U
    申请日:2016-10-18
    公开日:2019-02-15
    发明作者:
    申请人:Sasr Alpha Zehnte Beteiligungsverwaltung Gmbh；
    IPC主号:
    专利说明:

    Description: The present invention relates to a temperature control device for a battery system with a cuboid hollow body with at least one connection device for supplying and at least one connection device for discharging a separately temperature-controlled fluid, a large number of regularly arranged and identically designed, extending from a first body surface to one second body surface extending openings, wherein a cylindrical battery cell is received from each opening, so that a fluid-tight liquid space is formed.
    Battery systems, or a combination of several battery systems, partly. Also known as a battery pack, they are used in mobile applications, for example in electric motor vehicles or hybrid vehicles, as rechargeable electrical energy stores, for example with lithium-ion batteries, lithium-polymer batteries or nickel-metal hybrid batteries. In fully electric drives, lithium-ion high-voltage batteries are sometimes used, among other things to further reduce the size and weight of the battery system.
    Generic battery systems must be operated in a certain temperature window. The course of electrochemical processes in a battery is decisively influenced by the operating conditions of the battery and the temperature. Higher temperatures improve electron or ion mobility, but reduce the internal impedance of the battery cell and increase its capacity. However, higher temperatures can also cause undesired or irreversible chemical reactions and / or loss of the electrolyte, which can result in permanent damage or complete failure of the battery. Repeated changes in temperature can also damage the battery.
    From an operating temperature of +40 ° C, the life decreases, while below -10 ° C the efficiency decreases and the performance drops. In addition, the temperature difference between the individual cells must not exceed 5 to 10 K. Short-term peak loads in connection with high currents such as recuperation or boosting lead to a not inconsiderable heating of the cells. In addition, high outside temperatures, for example in the summer months, can contribute to the temperature in the battery system reaching a critical value.
    PRIOR ART [0005] An air-cooled battery pack is known from US 2015 210 184 A1. The battery pack includes a plurality of battery cells arranged in a plurality of modules so that cooling channels between adjacent cells are defined in each of the modules.
    [0006] DE 10 2011 082 991 A1 discloses a battery with a battery housing, temperature control elements and a lithium-ion cell which is in direct contact with one of the temperature control elements.
    Furthermore, a battery pack with a number of battery modules with battery cells and at least one temperature control device, which is characterized in that the battery cells are coupled to the at least one temperature control device by a material with temperature-dependent thermal conductivity, is known from DE 10 2014 205 133 A1 ,
    Other options known from the prior art for tempering generic battery systems are, for example, to suck in air from the air-conditioned vehicle interior, to connect a special evaporator plate enclosed in the battery cell to the air conditioning system present in the vehicle, or to install a cooling plate with coolant built into the battery block flow through (see Behr / Hella "Thermal management in hybrid vehicles"; BEHR HELLA SERVICE GmbH, Schwäbisch Hall).
    All of the cooling concepts known from the prior art lack a / 7
    AT16 119U1 2019-02-15 Austrian
    Patent office quickly and in particular evenly dissipates the heat generated, in particular with an optimized temperature management. This applies in particular to extreme performance ranges, i.e. with a high power output or a high power consumption of the battery cell and at very high ambient temperatures.
    The problem of thermal imbalance in the cell network, which leads to different power densities and thus in turn to a thermal imbalance within a battery pack (self-damaging system), is not solved satisfactorily.
    PRESENTATION OF THE INVENTION The object of the present invention is to provide an improved, but at least alternative, temperature control device for a battery system. In particular, it is an object of the invention to provide thermal equilibrium within a battery system.
    According to the invention, a temperature control device for a battery system is proposed, which comprises at least one cuboid hollow body with at least one connection device for supplying and at least one connection device for discharging a separately temperature-controlled fluid; the cuboid hollow body has a multiplicity of regularly arranged and identically designed openings which extend from a first body surface to a second body surface, a cylindrical battery cell being accommodated from each opening, so that a fluid-tight liquid space is formed.
    It is essential to the invention that the hollow body, excluding the cell head and the cell bottom, extends over a height h of> 20 to <100% of the total height of the battery system. The battery cells are flushed in the liquid space by the separately tempered fluid. Due to this direct, full-surface contact of each cylindrical battery cell of the battery system with the temperature-controlled fluid, the system can be kept actively within an optimal operating temperature range.
    Thus, it is not only possible by the present invention to quickly dissipate heat generated on the cell jacket of the battery cells, but also to avoid a thermal imbalance in the battery cell assembly.
    In order to ensure a fluid-tight liquid space, it is preferred to provide a sealing element which surrounds the cylindrical battery cells. Such a sealing element can be, for example, a sealing ring formed on each of the openings, which seals the cells over the circumference at the upper and lower cell jacket positions. However, the sealing elements are preferably formed in one piece, with openings, corresponding to those of the rectangular hollow body provided sealing plates.
    These sealing plates are made in one piece, for example from a TPE, EPDM or another elastomeric, preferably thermoplastic, plastic, and are preferably applied by means of 2K technology on the surfaces of the cuboid hollow body. It is also conceivable that the sealing plates are attached to the cuboid hollow body by means of detachable connection technology, for example snapped or screwed. The cylindrical battery cells are preferably enclosed by the sealing elements of the two sealing plates on the respective circumference of the cell in such a way that they seal completely.
    The cuboid hollow body is preferably made in one piece from plastic, for example POM. In order to be able to accommodate as many cylindrical battery cells as possible in the temperature control device according to the invention, i.e. To ensure a space-saving arrangement of the battery cells, the breakthroughs are preferably arranged in the form of a tightest circular packing.
    In an arrangement in which a cylindrical battery cell is received from each opening, each row of battery cells is offset by half a cell width from the adjacent row (1/2 diameter of the battery cell). There is a minimal distance (S) between the individual cells of a row. Because of this distance and the arrangement as
    2.7
    AT16 119U1 2019-02-15 Austrian
    The tightest circular packing in the patent office ensures that the separately tempered fluid can flow around each battery cell. A flow through the liquid space with the tempered
    This ensures fluid.
    According to the cuboid hollow body extends excluding the cell head and the cell bottom over a height h of> 20 to <100% of the total height H of the battery system. The height h is to be adapted to the requirements of the temperature management, in particular the cooling capacity, and is determined from the balance between thermal requirements and the battery weight, which increases with increasing hollow body height.
    Via at least one connection device for supplying and at least one further connection device for discharging a separately tempered fluid, the battery system, comprising a plurality of cylindrical battery cells, is tempered in such a way that the fluid flows around the cell walls of the individual battery cells in the fluid-tight liquid space.
    Since the liquid space is sealed at the top, the fluid, in particular the cooling liquid, does not come into contact with electrically sensitive areas of the battery system.
    Inhomogeneous aging of individual battery cells within a battery system, due to the fact that they are exposed to different temperatures, causes accelerated, above-average aging of the battery system, and furthermore a reduced capacity. In a preferred embodiment, the separately temperature-controlled fluid, in particular the cooling liquid, is therefore actively pumped through the temperature control device. This can reliably prevent a battery cell which is arranged on an outside of the cuboid hollow body from being exposed to a different thermal environment than one which is arranged, for example, between other battery cells, in particular in the center.
    [0023] The fluid is preferably pumped in a circle via a heating and / or cooling device. In a particularly preferred embodiment, the fluid is pumped in a circle through a plurality of temperature control devices according to the invention arranged one behind the other and at least one heating and / or cooling device. A separately temperature-controlled fluid is understood in particular to be a cooling liquid, such as water, which is actively temperature-controlled via a heating and / or cooling device.
    By means of a pump device, connecting lines between two or more temperature control devices and a heating and / or cooling device, a battery pack that consists of several battery systems can be temperature controlled.
    By means of the temperature control device according to the invention and the separately temperature-controlled fluid, temperature differences between the individual battery cells of 5 to 10 K are not exceeded. In addition, the battery system can be operated in the optimal temperature window, in particular specified by the battery manufacturers. Active cooling or heating of the individual battery cells by means of the temperature control device according to the invention not only within the specified operating temperatures but in a further limited temperature range results in an optimized power yield.
    Further features and advantages of the present invention will become apparent to those skilled in the art from the following description of an embodiment, with reference to the accompanying drawings.
    BRIEF DESCRIPTION OF THE DRAWING The figures show:
    1 a temperature control device for a battery system, [0029] FIG. 2 a sealing plate, [0030] FIG. 3 a cuboid hollow body viewed from the side and from above and
    3.7
    AT16 119U1 2019-02-15 Austrian
    Patentamt [0031] Fig. 4 shows a battery pack comprising three temperature control devices.
    FIG. 1 shows a temperature control device (1) for a battery system with a cuboid hollow body (2) with at least one connection device (3) for supplying and at least one connection device (4, cf. FIG. 4) for removing one separately tempered fluids. Cylindrical battery cells (8) are arranged in a plurality of regularly arranged and identically designed openings (7) extending from a first body surface (5) to a second body surface (6, FIG. 3A). The breakthroughs (7) respectively. the battery cells (8) are arranged in the form of the densest circular packing.
    Figure 2 shows a sealing plate (9) made of an elastomeric, preferably thermoplastic, with a variety of regularly arranged and identically shaped openings (7j. To ensure a fluid-tight liquid space is the sealing plate (9), preferably by means of 2K technology applied to the surfaces (5, 6) of the cuboid hollow body (2).
    Figure 3 shows the cuboid hollow body (2) from the side in a sectional view (3A) or from above (3B), also in a sectional view. One can see three staggered rows, each with seven openings (7). In the assembled state, a cylindrical battery cell (8) is accommodated in each opening (7) in such a way that each cell has a minimal distance (S) from the neighboring cell. This distance (S) and the arrangement as the densest circular packing ensures that the separately tempered fluid can flow around each individual battery cell. The fluid is fed to the cuboid hollow body (2) via the connection device (3) and leaves the latter on its underside via the connection device (9).
    FIG. 4 shows three temperature control devices (1, T, 1) connected in series as part of a battery pack, the black line (10) representing the path of the fluid. The fluid flows into the first temperature control device (1) via the connection device (3) in order to leave it again via the connection device (9); the fluid then flows via the connection device (3j) into the second temperature control device (1j, flows through it and leaves it again via the connection device (9j. This continues for the third and possibly subsequent temperature control device. The hollow body (2) extends over a height h, which is less than the total height H. The sensitive areas of the battery system, in particular the cell head (11) and the cell bottom (12), are excluded from the temperature control device (1) according to the invention.
    权利要求:
    Claims (8)
    [1]
    Expectations
    1. Temperature control device (1) for a battery system, at least comprising a cuboid hollow body (2) with at least one connection device (3) for supplying and at least one connection device (4) for discharging a separately temperature-controlled fluid, a large number of regularly arranged and identically designed ones Openings (7) extending from a first body surface (5) to a second body surface (6), a cylindrical battery cell (8) being accommodated from each opening (7), so that a fluid-tight liquid space is formed, characterized in that the Hollow body (2) excluding the cell head (11) and the cell bottom (12) over a height h of> 20 to <100%, the total height H of the battery system.
    [2]
    2. Temperature control device (1) for battery cells according to claim 1, characterized in that each opening (7) has a sealing element (9) which encloses the cylindrical battery cells (8).
    [3]
    3. Temperature control device (1) for battery cells according to claim 1 or 2, characterized in that the cuboid hollow body (2) is made in one piece from plastic, for example POM.
    [4]
    4. temperature control device (1) for battery cells according to claim 1, 2 or 3, characterized in that openings (7) are arranged in the form of a closest circular packing.
    [5]
    5. Temperature control device (1) for battery cells according to one of the preceding claims, characterized in that the individual battery cells are spaced apart.
    [6]
    6. Temperature control device (1) for battery cells according to one of the preceding claims, characterized in that the separately temperature-controlled fluid is pumped in a circle via a heating and / or cooling device.
    [7]
    7. temperature control device (1) for battery cells according to one of the preceding claims, characterized in that the fluid is conductive.
    [8]
    8. Battery pack with temperature control devices (1, T, 1 “) connected in series according to one of claims 1 to 7, characterized in that the separately temperature-controlled fluid via temperature control devices (1, T, Tj, at least one pump device and a heating and / or Cooling device is guided in a circle.
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    法律状态:
    2019-12-15| PC| Change of the owner|Owner name: RAIFFEISENLANDESBANK OBEROESTERREICH AKTIENGES, AT Effective date: 20191107 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102015013377.2A|DE102015013377A1|2015-10-18|2015-10-18|Temperature control device for a battery system|
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