Storage device, cell module, component set, sealing element support, and production methods and uses related thereto

Abstract

The invention relates to a storage device (200) for receiving, storing and releasing electrical energy, the storage device (200) comprising the following: a storage cell (140); a sealing unit (110), the sealing unit (110) having a sealing element (120); and a temperature control zone (130) on one side of the sealing unit (110), into which temperature control zone (130) at least one region of the storage cell (140) extends; wherein the sealing element (120) surrounds a cell casing (144) of the storage cell (140) and delimits the temperature control zone (130) with respect to an adjacent zone.

Description

[0001] Storage device, cell module, component set, sealing element carrier and related manufacturing processes and uses

[0002] The present invention relates to the field of storage devices for receiving, storing and releasing electrical energy.

[0003] Due to the increasing use of electromobility, storage devices for absorbing, storing and releasing electrical energy are becoming increasingly important, as they provide the energy required to power vehicles.

[0004] The absorption and release of electrical energy can in principle be based on electrochemical reactions or on physical charge transfers.

[0005] If the absorption and release are based on electrochemical reactions, the storage device may preferably be a battery device. If the absorption and release are based on physical charge transfers, the storage device may preferably be a capacitor device.

[0006] Three cell systems are particularly common for battery devices: cylindrical cells, prismatic cells and pouch cells.

[0007] Cylindrical or prismatic cells, in particular, can be inserted directly into the battery module's dedicated holders during assembly. The cells are held mechanically or by a material bond. Additional cooling systems are required, which may include, for example, cooling lines and / or cooling plates.

[0008] Such a battery module is relatively difficult to manufacture. This is because the storage cells must be inserted into the holders, and cooling lines and / or cooling plates must be integrated. Furthermore, the mechanical or material connection of the storage cell can complicate or prevent the necessary tolerance compensation of the storage cell in the module. DE 102015 013 800 A1 describes a battery adhesive fixing structure comprising a plurality of battery cells, a holder, an adhesive, a plurality of busbars, and an insulator. The holder comprises a plurality of holder holes. The adhesive bonds or connects the battery cells to the holder. The insulator lies between the busbars and the holder. Holding holes are also referred to as holding bores. The diameter of the holding holes appears to be constant along the length of the holding holes.The adhesive is arranged between a holder hole inner peripheral surface of the holder holes and a battery outer peripheral surface of the battery cells.

[0009] DE 102018218 343 A1 describes a cell housing plate for arranging round cells, comprising a cover plate arranged on the upper side of the cell housing plate and a base plate arranged opposite the cover plate on the underside of the cell housing plate, wherein the cover plate and the base plate have a plurality of recesses arranged opposite one another for receiving the round cells, wherein the recesses each have a collar pointing radially towards the interior of the recesses for receiving a sealing material and an opening arranged within the collar for the passage of the round cells, wherein the cover plate and the base plate are arranged relative to one another in such a way that the recesses in the cover plate and the oppositely arranged recesses in the base plate form cavities for receiving sealing material for sealing the round cells that can be arranged within the cell housing plate.

[0010] DE 102018218 343 A1 also describes cavities arranged inside the cell housing plate for accommodating sealing material, as well as openings arranged within the collar for accommodating round cells. After inserting round cells into the opening, sealing material can be introduced into the cavities through the opening, with the air present within the cavities being released through an opening provided for air discharge.

[0011] DE 102014 106 852 A1 describes a battery module. It has a frame-shaped battery box in which a plurality of cylindrical, vertically aligned battery cells are inserted. A space between the battery cells and the battery box is to be filled in a fluid-tight manner with an insulating layer consisting of a cured potting compound. According to DE 102014 106 852 A1, an upper holding plate is provided below the insulating layer and is connected to the battery box, with which the battery cells are suitably arranged and aligned. A sealing mat is provided between the upper holding plate and the insulating layer. This sealing mat rests on the upper holding plate during the potting of the potting compound for the insulating layer and prevents the potting compound from flowing through a loose fit formed between the upper holding plate and the battery cell and / or a loose fit formed between the upper holding plate and the battery box.

[0012] Essentially symmetrically to this, according to DE 102014 106 852 A1, a lower retaining plate, a further sealing mat arranged below the lower retaining plate, and a further insulating layer arranged below the further sealing mat are provided in the lower region of the battery module. The battery box, the insulating layer, and the further insulating layer are intended to form a cooling chamber in which a cooling fluid can flow around a portion of the battery cells arranged in the cooling chamber to dissipate heat and cool the battery cells.

[0013] DE 102014 106 852 A1 therefore provides a relatively complicated three-layer structure at both ends of the battery cells, comprising an insulating layer, a sealing mat and a holding plate.

[0014] The present invention is based on the object of providing a storage device that can be manufactured with low effort and efficiently temperature-controlled, as well as components for such a storage device. In particular, the storage device should be able to effectively compensate for the tolerances of the shape of a storage cell.

[0015] This object is achieved according to the invention by the features of claim 1.

[0016] The storage device according to the invention can be manufactured with minimal effort. First, a cell module of the desired size, e.g., with X cell rows, where each cell row comprises Y cells, can be prepared and inserted as a single block into a housing element of a storage device being constructed. The numbers X and Y can be freely selected within a wide range. With the aid of the sealing unit, which can also function as a limiting element, one or two temperature control zones through which a temperature control fluid can flow can be defined.

[0017] At the same time, the storage device according to the invention can be efficiently temperature-controlled. This is because a typical storage cell already has a fluid-tight cell jacket that defines the storage cell's outer boundary. According to the invention, for example, a region of the cell jacket of a storage cell can extend directly into the temperature control zone through which the temperature control fluid flows. Heat can be added or removed particularly efficiently with the flow of the temperature control fluid.

[0018] Furthermore, the storage device according to the invention is capable of effectively compensating for tolerances in the shape of a storage cell. Regions of a storage cell that extend into the temperature control zone through which the temperature control fluid flows can deform in the usual way during charging or discharging of the cell without colliding with a wall of a holder. A region of the storage cell that extends into the temperature control zone is preferably not in contact with a wall of a holder, but rather extends into a temperature control fluid that can flow around the storage cell essentially independently of any deformations of the storage cell.

[0019] The storage device for receiving, storing and releasing electrical energy may be an electrochemical storage device or a capacitive or an electrochemical and capacitive storage device.

[0020] It can be a storage device for a fully or entirely electric vehicle. The term "vehicle" includes a land vehicle (e.g., a road vehicle or a rail vehicle), an aircraft (e.g., an airplane), and a water vehicle (e.g., a ship).

[0021] The memory device comprises a memory cell. Of course, the memory device may comprise one or more, e.g., a plurality of additional memory cells.

[0022] The storage cell is preferably a battery cell or a capacitor cell. The battery cell is preferably a rechargeable battery cell. The battery cell can be, for example, a rechargeable lithium-ion battery cell.

[0023] The memory cell may be, for example, a cylindrical memory cell or a prismatic memory cell, preferably a cylindrical memory cell.

[0024] The capacitor cell may, for example, contain a capacitor. The capacitor may preferably be a supercapacitor or a double-layer capacitor, particularly preferably a supercapacitor.

[0025] The supercapacitor can, for example, enable static storage of electrical energy through charge separation in Helmholtz double layers in a double-layer capacitance, and additionally enable electrochemical storage of electrical energy through Faradaic charge exchange using redox reactions in a pseudocapacitance. It is known that the double-layer and pseudocapacitances in a so-called supercapacitor, which can be contained in the capacitor cell, add up to a total capacitance.

[0026] The storage device comprises a sealing unit. The sealing unit has a sealing element.

[0027] The sealing element can be a plastic sealing element, e.g. an elastomer sealing element.

[0028] The sealing element can be a sealing ring. The cross-section of the sealing ring can be square or round, for example. In the unpressed state, the sealing ring can have a round, e.g., O-shaped, cross-section. The sealing element can therefore be an O-ring, for example.

[0029] It can be particularly advantageous if a casting compound forms the sealing element or part of the sealing element.

[0030] The storage device comprises a temperature control zone on one side of the sealing unit. At least one region of the storage cell extends into the temperature control zone. The sealing element surrounds a cell shell of the storage cell and separates the temperature control zone from an adjacent zone.

[0031] The sealing element can, for example, extend around an area of ​​the cell shell of the storage cell and thereby surround the cell shell.

[0032] The sealing element can, for example, cause or promote a sealing separation of the tempering zone from the adjacent zone, in particular a sealing separation against the transfer of a tempering fluid, e.g. an aqueous tempering fluid.

[0033] The sealing element can counteract the escape of a temperature control fluid along the cell jacket from the temperature control zone.

[0034] The storage cell can, for example, be accommodated in a recess of the sealing unit. The sealing element can seal a gap between the cell casing and the edge of the recess.

[0035] The sealing unit may preferably comprise a sealing element carrier. The sealing element may be pressed against the cell shell by the sealing element carrier.

[0036] It can be particularly advantageous if the casting compound is arranged directly on a surface of the sealing element carrier.

[0037] The potting compound can extend right up to the cell jacket.

[0038] Each sealing element carrier described herein may be a metal sealing element carrier, e.g. made of steel or aluminum, or a plastic sealing element carrier, e.g. a plastic sealing element carrier available by injection molding.

[0039] The sealing element carrier preferably comprises a plurality of similar and / or uniform recesses. The recesses can be arranged regularly. For example, the centers of several recesses can each lie on parallel straight lines. Three centers of three immediately adjacent recesses can form an isosceles, preferably an equilateral, triangle over the three lines connecting the centers of the recesses. The similar and / or uniform recesses can serve to accommodate similar and / or uniform storage cells.

[0040] It can be particularly advantageous if the sealing element carrier has an insertion bevel, which faces the cell casing and is inclined toward the surface of the cell casing. The insertion bevel can preferably extend all the way around the cell casing.

[0041] The distance between directly adjacent recesses can advantageously be a maximum of 5 mm, particularly advantageous a maximum of 3 mm, most advantageous a maximum of 2 mm, e.g., a maximum of 1.5 mm. If one or more directly adjacent recesses have insertion chamfers, the distance is determined from narrow area to narrow area.

[0042] It was shown that the resulting small storage cell spacing can be sufficient for adequate cooling and consequently a high energy and power density can be achieved at the same time.

[0043] The insertion bevel can extend from a wide area of ​​the recess to a narrow area of ​​the recess.

[0044] In the area of ​​the insertion bevel, the recess can extend essentially conically from the wide area to the narrow area.

[0045] In the wide range, a diameter of the recess can be at most 3 mm, preferably at most 2 mm, particularly preferably at most 1 mm, e.g. at most 0.6 mm larger than a diameter of the recess in the narrow range.

[0046] In the wide range, a diameter of the recess can be at least 0.05 mm, preferably at least 0.1 mm, particularly preferably at least 0.15 mm, e.g., at least 0.2 mm larger than a diameter of the recess in the narrow range. If the recess is not circular, the diameters in the wide range and narrow range can be measured, e.g., across the recess at the point where the recess has the largest diameter.

[0047] Maintaining the above-mentioned diameter differences between the wide and narrow sections can easily accommodate the storage cell in the wide section while simultaneously maintaining an extremely small gap in the narrow section. This can, in particular, allow the use of quickly applied, low-viscosity potting compounds, which can be used to create the sealing element and also to bond the sealing element carrier to the cell jacket. A small gap in the narrow section ensures, even with a low-viscosity potting compound, that as little potting compound as possible can seep between the narrow section and the cell jacket and enter the temperature control zone.

[0048] The sealing element carrier can preferably be a temperature control zone boundary element, e.g., a boundary plate. The temperature control zone boundary element, e.g., the boundary plate, together with the sealing element and the storage cell, preferably together with a plurality of sealing elements and storage cells, can delimit the temperature control zone from the adjacent zone.

[0049] The sealing element carrier can have at least one passage for a temperature control fluid. Particularly if the adjacent zone is another temperature control zone, a transfer of temperature control fluid from the temperature control zone into the adjacent zone may be desired.

[0050] A tempering fluid can be passed through the tempering zone, passed through at least one passage into the further tempering zone and then passed through the further tempering zone.

[0051] The number of temperature control zones of the storage device can be, for example, 1 to 20, preferably 1 to 16, particularly preferably 1 to 8. Adjacent temperature control zones can each be separated by a sealing unit and / or by a shaped element described herein, wherein at least one passage, e.g. at least one passage in a sealing element carrier of the sealing unit or in the shaped element, enables a transfer from a temperature control zone upstream in the flow direction of the temperature control fluid to a temperature control zone downstream in the flow direction of the temperature control fluid.

[0052] Several consecutive regions of the storage cell along the longitudinal axis of the storage cell can extend into different tempering zones. A molded element described herein can be located between two tempering zones and separate the two tempering zones.

[0053] The successive regions of the storage cell along the longitudinal axis of the storage cell, which can extend into different temperature control zones, can follow one another directly or indirectly. If a molded element described herein lies between two temperature control zones and separates the two temperature control zones, the successive regions of the storage cell along the longitudinal axis of the storage cell, which extend into different temperature control zones, can follow one another indirectly. Between the indirectly successive regions of the storage cell, which extend into different temperature control zones, there can be a section of the storage cell that extends through the molded element. The section of the storage cell that extends through the molded element can be accommodated in a receiving zone of the molded element.

[0054] Compared to a storage device with only one temperature control zone, this can be advantageous because a substantially uniform temperature control of all cells can be achieved with less effort using more than one temperature control zone. For this purpose, a temperature control fluid flow can be guided, for example, such that a first storage cell in a temperature control zone is arranged upstream of a second storage cell in the temperature control fluid flow, but in the adjacent temperature control zone the second storage cell is arranged upstream of the first storage cell in the temperature control fluid flow. Although the temperature of the temperature control fluid flowing through the temperature control zones changes continuously, the first and second storage cells are then essentially uniformly temperature controlled overall - viewed across both temperature control zones.Of course, the number of storage cells in a storage device is typically much higher than two, but the considerations presented can apply to any pair of two cells from a multitude of cells. The considerations in the previous paragraph are particularly relevant when the temperature control fluid is flowing countercurrently in the two adjacent temperature control zones.

[0055] It may be preferred if the number of temperature control zones of the storage device is at least two, if several successive regions of the storage cells along the longitudinal axis of several storage cells extend into adjacent temperature control zones of the storage device, and if one or more inlets, passages, and outlets are configured such that the main flow directions of a temperature control fluid that can be guided through adjacent temperature control zones are essentially opposite in at least two adjacent temperature control zones. In Western terms, "opposite" means that the angle between the main flow directions is 180° + / - 40°, preferably 180° + / - 25°.

[0056] It can be particularly advantageous if the area of ​​the storage cell extends through the temperature control zone to a further sealing unit and preferably both sealing units each have a sealing element carrier.

[0057] It can be particularly advantageous if the storage cell extends through a single temperature control zone. The temperature control zone can be delimited by two sealing element carriers. It can be preferred if at least 50% of the surface of the cell jacket, e.g. at least 65% of the surface of the cell jacket, lies in the temperature control zone. The surface of the cell jacket is understood to be the surface of the storage cell that extends from one end face to the other end face of the storage cell. This can be particularly advantageous since two sealing element carriers can be arranged on the storage cell in a particularly simple technical manner, as explained herein by way of example, in particular with reference to Figs. 14 and 15.

[0058] It can be particularly advantageous if a potting compound is arranged on at least one surface of a sealing element carrier facing away from the temperature control zone. The potting compound forms a sealing element and connects the cell jacket to the surface of the sealing element carrier facing away from the temperature control zone and / or to the insertion bevel. It can be particularly advantageous if both sealing element carriers each have an insertion bevel, and the insertion bevels each face the cell jacket and are inclined toward the surface of the cell jacket.

[0059] Both insertion bevels can preferably extend around the cell shell.

[0060] Preferably, both insertion bevels can be inclined in the same direction.

[0061] This can mean, in particular, that a storage cell accommodated in the two recesses of the two sealing element carriers extends, starting from one end of the storage cell to the other end of the storage cell, first through the wide area and then through the narrow area of ​​the recess of one sealing element carrier and, spaced apart by the tempering zone, then through the wide area and then through the narrow area of ​​the recess of the other sealing element carrier.

[0062] One sealing element carrier can have a narrow area facing the temperature control zone at a recess. The other sealing element carrier can have a wide area facing this temperature control zone at a recess.

[0063] Furthermore, it is possible for a sealing element carrier whose recess has a wide area facing the tempering zone to have, in addition to this wide area and its narrow area, another wide area facing away from the tempering zone. This can result in an hourglass-like surface contour with a narrow area located between two wide areas.

[0064] It can be particularly advantageous if a casting compound is arranged on the two surfaces of both sealing element carriers facing away from the temperature control zones.

[0065] The respective potting compound can form the sealing element of the sealing element carrier on whose surface it is arranged. The respective potting compound can connect the cell jacket to the surface of the sealing element carrier facing away from the temperature control zone and / or to the insertion bevel. If the sealing element carrier, whose recess has a wide area facing the temperature control zone, has, in addition to this wide area and its narrow area, another wide area facing away from the temperature control zone, potting compound can be located in the further wide area. This can be advantageous for further increasing the sealing effect in the area between the cell jacket and this recess.

[0066] Preferably, at least one sealing unit of the storage device, e.g., the additional sealing unit, can be a shaped element. Alternatively or in addition to the possibility that at least one sealing unit, e.g., the additional sealing unit, is a shaped element, the temperature control zone can be delimited by a shaped element.

[0067] It may be particularly advantageous if the tempering zone is defined by the mold element. The tempering zone may be defined on one side of the tempering zone by a sealing unit as described herein and on an opposite side of the tempering zone by the mold element.

[0068] The mold element may comprise a mold element material and the density of the mold element may advantageously be at most 0.75 g / cm 3 preferably not more than 0.65 g / cm 3 be, particularly preferably at most 0.55 g / cm 3 be.

[0069] It is preferred if the mold element material has cavities, e.g. pores.

[0070] It is particularly preferred if the mold element material contains particles and the particles have cavities, e.g. pores.

[0071] The mold element material can, for example, be a particle foam material.

[0072] Preferably, the storage cell can be accommodated in a receiving zone of the molded element. The molded element can extend at the receiving zone around a region of the storage cell accommodated in the receiving zone.

[0073] The storage cell can be fixed in the receiving zone on the shaped element, e.g., through an interference fit. The receiving zone can be tapered. It can, for example, taper conically.

[0074] The receiving zone can have an insertion section and an interference fit section. In the insertion section, a cross-section of the receiving zone can be larger than a cross-section of the storage cell. In the interference fit section, the storage cell can be secured to the shaped element in the receiving zone by an interference fit.

[0075] The sealing unit can preferably be arranged in at least one suspension zone on at least one housing element of the storage device. For this purpose, the at least one housing element and / or the sealing unit can have a suspension element.

[0076] The storage device can comprise at least one cell module according to the invention, wherein the said storage cell(s), sealing unit(s) with sealing element(s) and sealing element carrier(s) can be comprised by the cell module.

[0077] The cell module may be a replaceable unit of the storage device.

[0078] This can have the advantage that neither the entire storage device nor individual storage cells need to be replaced when the storage cells are depleted after numerous charging cycles. Replacing individual cells would be very labor-intensive. Replacing the entire storage device would also unnecessarily replace components that are not worn out, such as housing components. This should be avoided from an ecological and economic perspective, as the housing components are often high-quality, fiber-reinforced lightweight components that can protect storage cells from mechanical damage and, for example, provide intrusion protection in electrically powered vehicles.

[0079] The storage device can comprise a receiving area into which at least one edge region of a sealing unit or at least one edge region of a sealing element carrier encompassed by a sealing unit can be received. Preferably, the storage device is equipped with an edge receiving sealing element at the receiving area, and / or the edge region is equipped with an edge receiving sealing element. The edge receiving sealing element can also contribute to separating the temperature control zone of the storage device from the adjacent zone.

[0080] According to the invention, the object is also achieved by the features of claim 8.

[0081] The features and advantages stated elsewhere herein, e.g., in connection with the storage device, may preferably also apply to the cell module. This also applies vice versa.

[0082] The cell module and / or the storage device may preferably also comprise a further sealing unit, wherein the further sealing unit has a further sealing element and a further sealing element carrier; wherein the further sealing element also surrounds the cell shell of the storage cell, and wherein a region of the storage cell extends between the sealing units through a temperature control zone that is delimited by the two sealing units.

[0083] The sealing element carrier may comprise a first carrier region and a second carrier region and a region of the sealing element may be arranged between the two carrier regions.

[0084] The carrier areas can, for example, be spaced apart from one another and run along the two surfaces of the sealing element carrier.

[0085] The sealing element carrier can have a recess for accommodating the storage cell. An edge of the first carrier region and an edge of the second carrier region can extend to the recess. The recess can have a circumferential depression between the edge of the first and the edge of the second carrier region. The region of the sealing element that is arranged between the two carrier regions can be arranged in the circumferential depression.

[0086] An edge at the edge of the first carrier region and an edge at the edge of the second carrier region can be formed such that the region of the sealing element is received in a recess defined by the two edges. This recess can be the circumferential recess. The first and the second carrier region can extend as far as a connecting region of the sealing element carrier. The sealing element carrier preferably comprises a plurality of connecting regions. Of the surface area of ​​the sealing element carrier, the connecting region (preferably the connecting regions) takes up a total of 2% to 30%, e.g. 4% to 25%. The surface area of ​​the sealing element carrier is solely the area covered by the sealing element carrier. The basis is a sealing element carrier without sealing elements and without storage cells. The area taken up by recesses therefore does not contribute to the area covered by the sealing element carrier.

[0087] It may be preferred if the first and the second carrier region are connected to one another in a force-fitting, form-fitting and / or material-fitting manner, e.g. by hot-staking, in one connecting region, preferably in several or all connecting regions.

[0088] The term hot staking refers to any form of hot staking, including classic hot staking with a heated stamp and non-contact hot staking, which includes, for example, laser hot staking and infrared hot staking.

[0089] Preferably, the hot-stamping device can produce a sealing element carrier from sealing element carrier parts or act on a sealing element carrier and thereby produce or increase a force that presses the sealing element more firmly onto the cell shell.

[0090] The sealing element carrier can comprise two sealing element carrier layers that are partially connected in at least one connecting region, e.g., by hot caulking. The sealing element carrier layers preferably extend over the entire surface of the sealing element carrier, with recesses in the sealing element carrier coinciding with mutually overlapping recesses in the connected sealing element carrier layers.

[0091] This can be advantageous in terms of efficient production. For example, the sealing elements can be arranged on the storage cells. This can be done automatically. The storage cells can then be inserted into the recesses of a sealing element carrier layer, with the sealing element forming a stop that prevents the storage cells from falling through the recesses. The second sealing element carrier layer is then placed on top so that on each storage cell a sealing element lies between the recess edges of the two sealing element carrier layers. The connections between the sealing element carrier layers are then created, e.g. by hot caulking. This can have the effect of pressing the sealing element squeezed between the sealing element carrier layers onto the cell casing.

[0092] The sealing element can be pressed so tightly against the cell casing that a force F acting along a storage cell's longitudinal axis, which corresponds to 20 times, preferably 30 times, especially 50 times, e.g., 60 times, the weight force G acting on the storage cell, is insufficient to pull the storage cell out of the pressed-on sealing element. It is readily possible for a person skilled in the art, with knowledge of the invention, to select the two sealing element carrier layers, as well as their material and thickness, such that a correspondingly high contact pressure of the sealing element against the casing surface can be achieved.

[0093] Particularly preferably, the sealing element carrier can be hot-stitched.

[0094] As a result of hot caulking, the sealing element may be pressed against the cell shell.

[0095] The first carrier region can be a cover region and the second carrier region a base region. A base region can be a depressed region on a surface of a sealing element carrier base element, which extends as far as a recess in the sealing element carrier base element. A sealing element carrier cover element, which has the cover region, can be arranged in the depressed region and likewise extend as far as the recess. The sealing element carrier cover element can have a recess that coincides with a recess in the sealing element carrier base element, so that both recesses together form the recess of the sealing element carrier. The depressed region and the sealing element carrier cover element arranged therein can be annular or annular disk-shaped. A sealing section of the sealing element can extend between the two carrier regions, e.g. between the cover region and the base region.

[0096] The sealing element can be firmly connected to the sealing element carrier.

[0097] The sealing element can be integrally connected to the support areas, e.g., to the cover area and the base area. In particular, the sealing section can be integrally connected to the support areas, e.g., to the cover area and the base area.

[0098] Such integral connections can be achieved, for example, by providing a sealing element carrier that has a recess for accommodating a storage cell and comprises a seal feed opening and a channel region, wherein the channel region extends from the seal feed opening to the recess. The channel region can be delimited, for example, by the first carrier region and the second carrier region. The recess of the sealing element carrier can be equipped with a sealing element by conveying a liquefied sealing material through the seal feed opening and the channel region into the recess.

[0099] It is possible that the channel area extends between the lid area and the base area.

[0100] By selecting a suitable combination of the sealing element carrier material and the sealing material, as well as the temperature of the sealing element carrier and the liquefied sealing material, a material-to-material bond is achieved. The material-to-material bond can, for example, be formed via the sealing material from the sealing element carrier cover element to the sealing element carrier base element.

[0101] On the other hand, materials and temperatures can also be selected in such a way that no material connection is created between the sealing element and the sealing element carrier.

[0102] The sealing element can be connected to the support areas, e.g., the cover area and the base area, in a form-fitting and / or force-fitting manner. In particular, the sealing section can be connected to the support areas, e.g., the cover area and the base area, in a form-fitting and / or force-fitting manner. In addition, a material connection may or may not exist.

[0103] A positive connection and / or frictional connection can occur (possibly in addition to an optional material connection), for example, when the liquefied sealing material is conveyed through the sealing feed opening and the channel area into the recess.

[0104] The sealing element can, for example, be attached in a material-to-material manner to a surface of the sealing element carrier facing the cell jacket.

[0105] The sealing element can preferably be injection-molded onto the surface of the sealing element carrier facing the cell jacket.

[0106] The sealing element can be attached, for example, by hot-staking, to a surface of the sealing element carrier facing the cell shell. The heat applied to the sealing element carrier or the sealing element carrier layers, particularly during hot-staking, can be selected such that the transition area between the sealing element carrier and the sealing element becomes so hot that the surfaces of the sealing element carrier and the sealing element bond together.

[0107] It may be particularly advantageous if the storage device and / or the cell module comprises a potting compound, wherein the potting compound forms the sealing element, the potting compound connects the sealing element to the sealing element carrier, and / or the potting compound connects the storage cell to the sealing element carrier.

[0108] The potting compound can be, for example, meltable, pourable, curable, foamable, and / or cured. The meltable and / or flowable potting compound can, in particular, be thermoplastic-based. The cured and / or curable potting compound can, in particular, be resin-based, e.g., synthetic resin-based. A foamable potting compound can, for example, be PU-based.

[0109] Preferably, at least one sealing unit of the cell module, e.g., the additional sealing unit, can be a shaped element. Alternatively or in addition to the possibility that at least one sealing unit, e.g., the additional sealing unit, is a shaped element, the temperature control zone can be delimited by a shaped element.

[0110] It may be particularly advantageous if the tempering zone is defined by the mold element. The tempering zone may be defined on one side of the tempering zone by a sealing unit as described herein and on an opposite side of the tempering zone by the mold element.

[0111] The mold element may comprise a mold element material which has been described in more detail in connection with the memory device.

[0112] Preferably, the storage cell can be accommodated in a receiving zone of the molded element. The molded element can extend at the receiving zone around a region of the storage cell accommodated in the receiving zone.

[0113] The storage cell can be fixed in the receiving zone on the shaped element, e.g. by an interference fit.

[0114] The absorption zone may become narrower.

[0115] For example, it can taper conically.

[0116] It may have an insertion section and an interference fit section. In the insertion section, a cross-section of the receiving zone may be larger than a cross-section of the storage cell. In the interference fit section, the storage cell may be secured to the shaped element in the receiving zone by an interference fit.

[0117] Even if the storage device does not comprise a (replaceable) cell module, the storage cell(s), the sealing unit(s) and the sealing element(s) and, if applicable, the sealing element carriers in the storage device can be designed and interact with one another in such a way as described herein, in particular in connection with the cell module.

[0118] The object is also achieved according to the invention by the features of claim 14. The driver can be arranged or formed between several recesses on the other sealing element carrier.

[0119] The driver can preferably form a storage cell stop. The storage cell stop can define a maximum receiving depth of a storage cell that can be accommodated in the recess. The receiving depth is understood to be the distance a storage cell can travel within the recess toward the stop until it comes into contact with the storage cell stop.

[0120] In particular, a stop section of the driver can run at a distance from the recess and there completely or partially overlie a recess surface occupied by the recess.

[0121] The driver arranged or formed between several (e.g., three) recesses on the other sealing element carrier can simultaneously form a storage cell stop for several (e.g., three) storage cells, which defines a maximum receiving depth for the storage cells that can be accommodated in these recesses. It can, for example, be a metal driver attached to a metal sealing element carrier. For example, three stop sections can extend in three directions at a distance from three adjacent recesses, each of which can completely or partially overlap one of the three recess surfaces occupied by the recesses.

[0122] On a plastic sealing element carrier, several drivers (e.g., all drivers) can extend at the same inclination. This can provide the advantage that the plastic sealing element carrier, including the drivers formed on it, can be manufactured in one piece by injection molding and removed from the injection mold without destroying the resulting drivers.

[0123] The object is also achieved according to the invention by the features of claim 16.

[0124] The sealing element carrier according to the invention can also be a sealing element carrier described herein as a different or further sealing element carrier. It can therefore also have a driver, for example. The distance between immediately adjacent recesses can particularly advantageously be at most 3 mm, even more advantageously at most 2 mm, e.g., at most 1.5 mm.

[0125] The object is also achieved according to the invention by the features of claim 17.

[0126] Preferably, the attachment of the sealing element may include the application of a potting compound. The potting compound may, for example, be applied to a surface of the sealing element carrier facing away from the temperature control zone. A potting compound adhering to the cell casing may determine the position of the storage cell in the recess.

[0127] It can be particularly advantageous if: the storage cell is also received in the recess of another sealing element carrier and a distance between the two sealing element carriers is increased, while the storage cell is received in the two recesses and the position is then determined.

[0128] It may be particularly advantageous if at least the sealing element carrier, in whose recess the storage cell is first received, has an insertion bevel on the recess which extends from a wide area of ​​the recess to a narrow area of ​​the recess, wherein: the storage cell is received in the recess in such a way that the storage cell first reaches the wide area and then the narrow area.

[0129] It can be particularly advantageous if the further sealing element carrier has a driver, whereby:

[0130] - the distance between the two sealing element carriers is increased by guiding the storage cell in the recesses against the driver and

[0131] - the further sealing element carrier which is in contact with the storage cell via the driver is guided further with the storage cell while increasing the distance between the two sealing element carriers and / or - the sealing element carrier which does not have a driver is removed along the cell jacket from the further sealing element carrier which is in contact with the storage cell via the driver.

[0132] It may be particularly advantageous to fix the position of the storage cell in the two recesses of the two sealing element carriers by attaching a sealing element to each of them. Attaching the respective sealing element may involve applying a potting compound.

[0133] It may be preferable to first apply a potting compound to a surface of a sealing element carrier facing away from the tempering zone, to turn the resulting cell module over and to apply further potting compound to a surface of the further sealing element carrier facing away from the tempering zone.

[0134] Alternatively or additionally, a driver can be arranged on the storage cell, e.g. on the cell casing, and the dimensions of the two recesses into which the storage cell is received can be adapted to the shape of the storage cell and the driver in such a way that the driver only passes the recess into which the storage cell is first received and only the further sealing element carrier which is in contact with the storage cell via the driver is guided further with the storage cell, increasing the distance between the two sealing element carriers.

[0135] Alternatively or additionally, the sealing element carrier may comprise a seal feed opening and a channel region, wherein the channel region extends from the seal feed opening to the recess and wherein the position of the storage cell in the recess is determined by attaching the sealing element by conveying a liquefied sealing material through the seal feed opening and the channel region into the recess.

[0136] The channel region can, for example, be delimited by the first support region and the second support region and extend between the first support region and the second support region from the seal feed opening to the recess.

[0137] Preferably, a direct material-to-material connection of a storage cell to at least one molded element can be created by forming the at least one molded element in the presence of the storage cell on a surface of the storage cell, e.g., on its cell shell, wherein the storage cell is preferably at least partially introduced into a mold in which the at least one molded element is produced, or forms part of the mold in which the at least one molded element is produced. The storage cell can, for example, be the storage cell described herein in connection with the method according to the invention. The molded element can preferably be a molded element described herein. The direct material-to-material connection can be created simultaneously between the molded element and a plurality, e.g., at least 10, further storage cells.

[0138] For example, it is possible that in one process step, the storage cell is accommodated in the recess of the sealing element carrier, and the position of the storage cell in the recess is determined by attaching a sealing element. This process step can be referred to as the sealing process step.

[0139] For example, it is possible for the direct material-to-material connection of a storage cell to the at least one molded element to be created in one process step by forming the at least one molded element in the presence of the storage cell on a surface of the storage cell, e.g., on its cell shell. The storage cell is preferably at least partially introduced into the mold in which the at least one molded element is produced, or forms part of the mold in which the at least one molded element is produced. This process step can be referred to as a molding process step.

[0140] Preferably, the sealing process step can be a process step downstream of the molding process step.

[0141] Preferably, the molding process step can be a process step downstream of the sealing process step.

[0142] At least one further optional process step may take place before, between or after these two process steps.

[0143] It is also possible for the process to include a sealing step but no molding step. It is also possible for the process to include a molding step but no sealing step.

[0144] According to the invention, the object is also achieved by the features of claim 22.

[0145] The force can be or include, for example, the force of gravity acting on the storage cell(s).

[0146] The force can be selectively transmitted to one of the two sealing element carriers via drivers.

[0147] When one sealing element carrier is moved relative to the other sealing element carrier, a distance between the sealing element carriers can be increased until the desired extent of a tempering zone extending along the cell shell of the storage cell is achieved.

[0148] One or more features described in connection with an object of the invention, i.e. in connection with the storage device, with the cell module, with the component set, with the sealing element carrier, with the method or in connection with the use, can preferably also form one or more features of another object of the invention.

[0149] Further preferred features and / or advantages of the invention are the subject of the following description and the drawings of exemplary embodiments.

[0150] The drawings show:

[0151] Fig. 1 is a schematic representation of a cell module according to the invention with

[0152] View of the surface of a sealing unit;

[0153] Fig. 2 shows another schematic representation of the cell module from Fig. 1 with

[0154] Viewing direction along a surface of a sealing unit;

[0155] Fig. 3 shows a section through a schematically illustrated storage device; Fig. 4 shows a schematic representation of a section of a first

[0156] Cell module before hot staking;

[0157] Fig. 5 is a schematic representation of the section from Fig. 4 after the

[0158] hot staking;

[0159] Fig. 6 shows an enlarged section of Fig. 5;

[0160] Fig. 7 is a schematic representation of a section of a second

[0161] cell module;

[0162] Fig. 8 is a schematic representation of a section of a third

[0163] cell module;

[0164] Fig. 9 is a schematic representation of a section of a fourth

[0165] cell module;

[0166] Fig. 10 is a schematic representation of a cell module according to the invention with

[0167] View along the surfaces of two sealing units;

[0168] Figs. 11 and 12 are schematic representations of the production of a cell module according to the invention;

[0169] Fig. 13 is a schematic representation of a cell module according to the invention obtainable according to Figs. 11 and 12;

[0170] Fig. 14 is a schematic representation of the application of potting compound to a top side during the manufacture of the cell module shown in Fig. 13;

[0171] Fig. 15 is a schematic representation of the application of potting compound to a bottom side during the manufacture of the cell module shown in Fig. 13;

[0172] Fig. 16 is a schematic representation of a storage device; Fig. 17 is a molded element;

[0173] Fig. 18 is a sectional view of another mold element;

[0174] Fig. 19 is a representation of another form element; and

[0175] Fig. 20 is a schematic sectional view of a simplified

[0176] Form element material in a greatly enlarged view.

[0177] Identical or functionally equivalent elements are provided with the same reference numerals in all figures.

[0178] Fig. 1 shows a cell module 100 in the form of a battery cell module 102. The cell module 100 comprises a plurality of storage cells 140 in the form of cylindrical battery cells 142 and a sealing unit 110.

[0179] Fig. 2 shows a section of the cell module from Fig. 1, viewed along the surfaces of the sealing unit 110. The sealing unit 110 comprises a sealing element 120 and a sealing element carrier 114. In the example shown here, the sealing element 120 is designed as a sealing surface element 122. The sealing element 120 surrounds the cell shells 144 of the storage cells 140. The sealing element carrier 114 is a boundary element 112 that can be located in a storage device 200 at the transition from one temperature control zone to another. A region of each of the storage cells 140 then extends into the two temperature control zones.

[0180] Fig. 3 shows a storage device 200 for receiving, storing, and releasing electrical energy. It is a battery device 202 comprising a cell module 100. The storage device 200 comprises a plurality of storage cells 140. The storage cells are cylindrical battery cells 142. The storage device 200 also comprises a sealing unit 110. The sealing unit 110 has a plurality of sealing elements 120. The sealing elements 120 are sealing rings 124. The storage device 200 also comprises a temperature control zone 130 on one side of the sealing unit 110. One region of each of the storage cells 140 extends into the temperature control zone 130, in which a temperature control fluid 132 flows around the storage cells. Each sealing element 120 surrounds a cell shell 144 of a storage cell 140 and, together with the sealing element carrier 114 acting as a boundary element 112, delimits the temperature control zone 130 from an adjacent zone. In Fig.Figure 3 shows the adjacent zone above the sealing unit 110. The housing of the storage device comprises the upper housing element 204 and the lower housing element 206.

[0181] Fig. 4 to 9 show, by way of example, various possibilities for arranging memory cells 140 in memory devices 200 and cell modules 100.

[0182] Figs. 4 and 5 illustrate one possibility for pressing a sealing element 120, which may be a sealing ring 124, particularly firmly against the cell casing 144. Fig. 4 shows a state before hot pressing. Fig. 5 shows a state after hot pressing. In Fig. 5, the sealing element 120 is pressed against the cell casing 144 by the sealing element carrier 114. For this purpose, the meltable and / or flowable mass of the hot-pressing element 115, which is shown in its original form in Fig. 4, was hot-pressed into the plane of the sealing element carrier.

[0183] The sealing element carrier 114 comprises a first carrier region 116 and a second carrier region 118. A region of the sealing element 120 is arranged between the two carrier regions 116 and 118.

[0184] Fig. 6 shows an enlarged section of Fig. 5. An edge 117 at the edge of the first support region 116 and an edge 119 at the edge of the second support region 118 are formed such that the region of the sealing element 120 arranged between the two support regions 116 and 118 is received in a recess defined by the two edges 117 and 119. In the example shown, the edges 117 and 119 are inclined toward each other.

[0185] The edge 117 of the first support region 116 and the edge 119 of the second support region 118 rest against the sealing element 120. Due to the inclination of the edges 117 and 119 and the force built up during hot pressing, the two support regions 116 and 118 can be spread apart, as shown in Fig. 6. The prestressing of the support regions 116 and 118 thus built up contributes to the sealing element 120 being pressed against the cell casing 144. Hot pressing makes it particularly easy to ensure that the storage cell 140 sits very firmly in the sealing unit 110. Even a force F acting along a storage cell longitudinal axis, which corresponds to 20 times or even 50 times a weight force G acting on the storage cell 140, is then not sufficient to pull the storage cell 140 out of the pressed-on sealing element 120.

[0186] The first and second support regions 116 and 118 can be separate plate elements. Depending on the choice of materials for the plate elements and the hot-staking element 115, the hot-staking process can result in the support regions 116 and 118 being connected to one another in a force-fitting, form-fitting, and / or material-fitting manner in a connecting region.

[0187] In the example of Fig. 7, the first carrier region 116 is a cover region 128 and the second carrier region 118 is a base region 126. A sealing section 121 of the sealing element 120 extends between the cover region 128 and the base region 126. The sealing element 120 is integrally connected to the sealing element carrier 114. In particular, the sealing section 121 is integrally connected to the cover region 128 and the base region 126. The sealing element 120 is also integrally attached to a surface of the sealing element carrier 114 facing the cell jacket 144. The sealing element carrier 114 comprises a seal feed opening 125 and a channel region which extends from the seal feed opening 125 to the recess 240 and is delimited by the first carrier region 116 and the second carrier region 118.In the example shown, a liquefied sealing material was introduced through the seal feed opening 125 and the channel area, thereby forming the sealing element 120 which is integrally connected to the sealing element carrier 114.

[0188] In the example of Fig. 8, a flat retaining element 123 is arranged on a surface of the sealing element carrier 114 facing the temperature control zone 130. The flat retaining element 123 surrounds the cell jacket 144 and is spaced apart from the sealing element 120. In the example shown, the flat retaining element 123 is formed from a potting compound. The retaining element 123 can exert an additional sealing effect. In the example of Fig. 9, the sealing element 120 is integrally molded onto a surface of the sealing element carrier 114 facing the cell jacket 144.

[0189] Fig. 10 shows, by way of example, two storage cells 140, e.g., battery cells 142, of a cell module viewed along the surfaces of two sealing units 110.

[0190] One sealing unit 110 is arranged at one end of the storage cells 140. The other sealing unit 110 is arranged at the other end of the two storage cells 140.

[0191] The sealing units 110 each comprise a sealing element carrier 114, which functions as a limiting element 112. The sealing element carriers define a temperature control zone 130.

[0192] The sealing units 110 also each comprise a sealing element 120, which is designed here as a sealing surface element 122. As is clear from the information on the following Figs. 11 to 14, this can be a sealing surface element 122 formed from a potting compound 127.

[0193] Fig. 11 illustrates how a storage cell can be accommodated in recesses 240 of two sealing element carriers 114 arranged one above the other.

[0194] The two sealing element carriers 114 can initially be arranged closer to each other, e.g. one sealing element carrier can lie on the other sealing element carrier, as indicated in Fig. 11.

[0195] The sealing element carriers 114 each have an insertion bevel 103 at their recesses 240.

[0196] The insertion bevels 103 extend from a wide area 104 of the respective recess 240 to a narrow area 105 of the respective recess 240.

[0197] The storage cell 140 is inserted into the recesses 240 one after the other in the downward direction of the arrow such that the storage cell first enters the wide region 104 and then the narrow region 105 of the respective recess. The dimensions of one narrow region 105 or both narrow regions 105 can be adapted to the outer dimensions of the cell casing 144 such that the storage cell 140 does not risk becoming stuck in the narrow region 105 or the narrow regions 105 and that a potting compound 127 to be applied later cannot flow between the cell casing 144 and the narrow region 105.

[0198] Fig. 12 illustrates how a distance between the two sealing element carriers 114 can be increased while the storage cell 140 is accommodated in the two recesses 240.

[0199] A sealing element carrier 114 has a driver 106, which has been omitted in Fig. 11. The distance between the two sealing element carriers 114 is increased by guiding the storage cell 140 in the recesses 240 against the driver 106 and only the sealing element carrier 114, which is in contact with the storage cell 140 via the driver 106 and is shown at the bottom in Fig. 12, is guided further with the storage cell 140, increasing the distance between the two sealing element carriers.

[0200] In the example shown, the driver 106 forms a storage cell stop 108, which defines a maximum receiving depth of a storage cell 140 that can be received in the recess.

[0201] The schematic representation of a cell module according to the invention obtainable according to Figs. 11 and 12, which is shown in Fig. 13, represents only a single storage cell 140 by way of example.

[0202] In advantageous cell modules 100 according to the invention, adjacent storage cells 140 can be located in direct proximity to the storage cell 140, wherein the cell shells 144 can be spaced apart by only 1 to 2 mm, for example. For simplicity, however, adjacent storage cells 140 and the associated adjacent recesses 240 are not shown in Fig. 13.

[0203] Fig. 13 shows that a potting compound 127 is arranged on each of the surfaces of the two sealing element carriers 114 facing away from the temperature control zone 130. The potting compound 127 forms a sealing element 120 and connects the cell jacket 144 to the two surfaces of the two sealing element carriers 114 facing away from the temperature control zone 130.

[0204] The potting compound 127 also connects the cell jacket 144 to the insertion bevel 103 of the sealing element carrier 114 shown at the top in Fig. 13. The potting compound 127 can reach there through the wide area 104 of the sealing element carrier 114 shown at the top in Fig. 13.

[0205] It is possible that potting compound 127 also connects the cell jacket 144 to the insertion bevel 103 of the sealing element carrier 114 shown at the bottom of Fig. 13. For example, the connection can be formed by some potting compound 127 that has seeped through the narrow region 105 of the sealing element carrier shown at the bottom of Fig. 13.

[0206] Fig. 14 illustrates the application of potting compound 127 from a potting compound source 129 to a top side. This can be done, for example, during the manufacture of the cell module shown in Fig. 13. After the distance between the two sealing element supports 114 has been increased to a desired level, the position of the storage cell 140 in the recess can be fixed by attaching a sealing element 120. In the example shown here, the sealing element 120 is attached by applying a potting compound 127, and the potting compound 127 forms the sealing element 120.

[0207] Fig. 15 shows the resulting cell module in a reversed state, which allows for the application of potting compound 127 from the potting compound source 129 to the (now upwardly oriented) underside. The position of the storage cell 140 can also be fixed in the recess of the sealing element carrier 114, now shown at the top, by attaching a sealing element 120. In the example shown here, the sealing element 120 is attached by applying a potting compound 127, and the potting compound 127 forms the sealing element 120.

[0208] Some casting compound 127 that has seeped through the narrow region 105 also connects the cell jacket 144 in the example shown here to the insertion bevel 103 of the sealing element carrier 114 shown at the bottom in Fig. 13. Fig. 16 shows a storage device 200 in a schematic sectional view, wherein in particular the distances between the storage cells 140 are shown exaggeratedly large.

[0209] The storage device 200 shown in Fig. 16 can be used to receive, store, and release electrical energy. It comprises a plurality of storage cells 140, only three of which are shown in the schematic illustration.

[0210] The storage device 200 comprises four sealing units 110, each sealing unit 110 having a sealing element.

[0211] It also includes temperature control zones 130, each extending on one side or both sides of sealing units 110. Portions of the storage cells 140 extend into the temperature control zones 130 or through a portion of the temperature control zones 130.

[0212] The sealing elements surround cell shells of the storage cells 140. They delimit adjacent temperature control zones 130 from each other.

[0213] The sealing units 110 each have a sealing element carrier 114.

[0214] In the example of a storage device shown in Fig. 16, a potting compound 127 forms the respective sealing element. The potting compound connects the storage cells 140 to the respective sealing element carrier 114. Lead-in chamfers may also be provided. However, they are not shown in Fig. 16.

[0215] The sealing units 110 are arranged in suspension zones 214 on at least one housing element 204 of the storage device 200. For this purpose, the at least one housing element 204 and the respective sealing unit 110 can each have at least one suspension element 208. In the example shown in Fig. 16, a suspension element 208 of the at least one housing element 204 is at least one suspension recess 212, into which at least one suspension projection 210 of a sealing unit 110, functioning as a suspension element 208, can be received. The sealing units 110 are each shown in three layers in the storage device. Fig. 16 shows only one possibility in which the respective sealing element carrier 114 has at least one suspension projection 210. Other layer structures are also possible. For example,the respective middle layer represents a sealing element carrier 114 and the two layers arranged thereon are formed from or consist of casting compound 127.

[0216] Fig. 16 shows that several successive regions of the storage cells 140 extend into adjacent temperature control zones 130 of the storage device along the longitudinal axes of the storage cells 140. One or more inlets, passages, and outlets (not shown) can be configured such that the main flow directions of a temperature control fluid run, for example, as indicated by the arrows in Fig. 16. In different temperature control zones 130, a temperature control fluid can be guided essentially in opposite directions.

[0217] Fig. 17 shows a molded element 242. The molded element is suitable for arrangement in a storage device 200 or in a cell module 100.

[0218] Preferably, the mold element 242 may be arranged in a storage device 200, e.g., in a storage device 200 shown in Fig. 16.

[0219] It can be used, for example, instead of one or more sealing units 110 and occupy part of the volume of one or more tempering zones 130.

[0220] The molded element 242 may be a sealing unit 110.

[0221] The mold element 242 comprises a plurality of receiving zones 246. The receiving zones 246 are suitable for receiving at least a portion of a storage cell 140 into the mold element 242. The receiving zones can serve as guide zones 254.

[0222] In the example shown here, the mold element 242 consists entirely of a mold element material 248. The density of the mold element material 248 is preferably less than 0.55 g / cm 3. In the example shown here, the mold element material 248 is a particle foam material 252, which may be a plastic particle foam material.

[0223] In the mold element 242 shown in Fig. 17, the mold element material 248 occupies the entire volume of the mold element 242. The mold element 242 shown there is a plastic mold element 244.

[0224] The plastic molded element 244 is obtained by molding. Particles 264 containing cavities, e.g., pores 268, were introduced into a mold. The particles 264 introduced into the mold were thermoplastic microparticles containing closed pores, i.e., a form of plastic particles 266. They were converted into the mold by applying heat to form the molded element 242. The temperature was adjusted so that the thermoplastic became sufficiently soft and, as a result, the thermoplastic material bonded to the particle surfaces of neighboring particles. Alternatively, wetting of the particles 264 containing cavities, e.g., pores 268, with an adhesion promoter would be possible, via which the particles can be bonded.

[0225] Preferably, a direct, material-to-material connection of a storage cell 140 to at least one molded element 242 can be created by forming the at least one molded element 242 on the cell casing 144 in the presence of the storage cell 140. For this purpose, the storage cell 140 is partially introduced into a mold in which the at least one molded element 242 is produced. Alternatively, the storage cell 140 can form part of the mold in which the at least one molded element 242 is produced.

[0226] In the mold element 242 shown in Fig. 17, the receiving zones 246 are cylindrical receiving zones. They each comprise a cylindrically circumferential receiving zone surface.

[0227] Fig. 18 shows a section of a flat shaped element 242 in a sectional view.

[0228] Receiving zones 246 can also be seen in Fig. 18. The receiving zones 246 are each suitable for receiving a section of a storage cell 140 in the molded element 242. The molded element 242 shown in Fig. 18 is also a plastic molded element 244. The molded element shown in Fig. 18 comprises wall zones 270. The wall zones 270 are each arranged between two immediately adjacent receiving zones 246. The wall zones 270, like the rest of the molded element 242, consist of the molded element material 248, which can be, for example, a particle foam material 252.

[0229] Fig. 18 shows a minimum material thickness 258. The minimum material thickness 258 is measured between two receiving zones 246. Between the receiving zones, the mold element material 248 tapers to the minimum material thickness 258. The minimum material thickness 258 can be measured where the distance between the cylindrically circumferential receiving zone surfaces of two adjacent receiving zones 246 is particularly small.

[0230] In the form element 242 shown in Fig. 18, a material thickness 256, which is measured orthogonally to a center plane of the planar form element 242 shown in dashed lines, is significantly greater than the smallest material thickness 258, which is measured in the center plane of the planar form element 242.

[0231] Fig. 19 shows another shaped element 242. In Fig. 19, the viewer's viewing direction is aligned parallel to the receiving direction in which storage cells 140 not shown in Fig. 19, e.g., battery cells 142, can be received in the shown receiving zones 246. The cylindrical receiving zones 246 therefore appear as circles in the view of Fig. 19.

[0232] Fig. 20 shows a schematic representation of a section through a simplified form element material 248. The section is shown greatly enlarged. The form element material 248 shown therein is a form element plastic material 260.

[0233] The mold element material 248 has cavities. The cavities are pores 268 that are inaccessible to the surrounding fluid. The mold element material 248 contains particles 264, which are plastic particles 266. The particles 264 are fused together at their surfaces.

[0234] The particles 264 have pores 268. The particle foam material 252 is composed of multicellular particles. The molded element plastic material 260 is a particle foam material 252, which can also be referred to as particle foam 262.

[0235] List of reference symbols

[0236] Cell module 100

[0237] Battery cell module 102

[0238] Insertion bevel 103

[0239] Wide range 104

[0240] Narrow area 105

[0241] Driver 106

[0242] Memory cell stop 108

[0243] Sealing unit 110

[0244] Limiting element 112

[0245] Sealing element carrier 114

[0246] Hot caulking element 115

[0247] Carrier area 116

[0248] Edge 117

[0249] Carrier area 118

[0250] Edge 119

[0251] Sealing element 120

[0252] Sealing section 121

[0253] Sealing surface element 122

[0254] Holding element 123

[0255] Sealing ring 124

[0256] Seal feed opening 125

[0257] Base area 126

[0258] Casting compound 127

[0259] Lid area 128

[0260] Potting compound source 129

[0261] Tempering zone 130

[0262] Tempering fluid 132

[0263] Memory cell 140

[0264] Battery cell 142

[0265] Cell coat 144

[0266] Storage device 200

[0267] Battery device 202

[0268] Housing element 204 Housing element 206

[0269] Suspension element 208 Suspension projection 210 Suspension recess 212 Suspension zone 214 Recess 240 Form element 242

[0270] Plastic mold element 244 Receptacle zone 246 Mold element material 248 Guide element 250 Particle foam material 252

[0271] Guide zone 254 Material thickness 256 Material thickness 258 Form element plastic material 260 Particle foam 262

[0272] Particle 264

[0273] Plastic particles 266 Pores 268

[0274] Wall zone 270

Claims

Claims: Storage device (200) for receiving, storing and releasing electrical energy, wherein the storage device (200) comprises: a storage cell (140); a sealing unit (110), wherein the sealing unit (110) has a sealing element (120); and a temperature control zone (130) on one side of the sealing unit (110), wherein at least a region of the storage cell (140) extends into the temperature control zone (130); wherein the sealing element (120) surrounds a cell shell (144) of the storage cell (140) and separates the temperature control zone (130) from an adjacent zone. Storage device (200) according to claim 1, wherein the sealing unit (110) has a sealing element carrier (114).Storage device (200) according to claim 1 or 2, comprising a potting compound (127), wherein the potting compound (127) forms the sealing element (120), the potting compound (127) connects the sealing element (120) to the sealing element carrier (114), and / or the potting compound (127) connects the storage cell (140) to the sealing element carrier (114). Storage device (200) according to claim 2 or 3, wherein the sealing element carrier (114) has an insertion ramp (103), the insertion ramp (103) facing the cell shell (144) and inclined towards the surface of the cell shell (144), and the insertion ramp (103) preferably extends around the cell shell (144). Storage device (200) according to one of the preceding claims, wherein the area of ​​the storage cell (140) extends through the temperature control zone (130) to a further sealing unit (110) and preferably both sealing units (110) each have a sealing element carrier (114). Storage device (200) according to claim 5, wherein a potting compound (127) is arranged on at least one surface of a sealing element carrier (114) facing away from the temperature control zone (130), the potting compound (127) forming a sealing element (120) and connecting the cell shell (144) with the surface of the sealing element carrier (114) facing away from the temperature control zone (130) and / or with the insertion ramp (103). Storage device (200) according to one of the preceding claims, e.g., according to claim 5 or 6, wherein at least one sealing unit (110), e.g., B. the further sealing unit (110) is a molded element (242) and / or the temperature control zone (130) is limited by a molded element (242), wherein the molded element (242) comprises a molded element material (248) and the density of the molded element (242) is at most 0.75 g / cm³ 3 is, preferably not more than 0.65 g / cm³ 3 is, particularly preferably, not more than 0.55 g / cm² 3The cell module (100), for example for a storage device (200) according to any one of claims 1 to 7, wherein the cell module (100) comprises: a storage cell (140); a sealing unit (110), wherein the sealing unit (110) comprises a sealing element (120) and a sealing element carrier (114); wherein the sealing element (120) surrounds a cell shell (144) of the storage cell (140).Cell module (100) according to claim 8, comprising a potting compound (127), wherein the potting compound (127) forms the sealing element (120), the potting compound (127) connects the sealing element (120) to the sealing element carrier (114), and / or the potting compound (127) connects the storage cell (140) to the sealing element carrier (114). Cell module (100) according to claim 8 or 9, wherein the sealing element carrier (114) has an insertion ramp (103) which faces the cell shell (144) and is inclined towards the surface of the cell shell (144), and which preferably extends around the cell shell (144). Cell module (100) according to any one of claims 8 to 10, wherein the cell module (100) further comprises: a further sealing unit (110), wherein the further sealing unit (110) comprises a further sealing element (120) and a further sealing element carrier (114); wherein the further sealing element (120) also surrounds the cell shell (144) of the storage cell (140) and wherein a region of the storage cell (140) between the sealing units (110) extends through a temperature control zone (130) which is bounded by the two sealing units (110).Cell module (100) according to claim 11, wherein a potting compound (127) is arranged on at least one surface of a sealing element carrier (114) facing away from the temperature control zone (130), the potting compound (127) forming a sealing element (120) and connecting the cell shell (144) to the surface of the sealing element carrier (114) facing away from the temperature control zone (130) and / or to the insertion ramp (103). Cell module (100) according to any one of claims 8 to 12, e.g., according to claim 11 or 12, wherein at least one sealing unit (110), e.g., B. the further sealing unit (110) is a molded element (242) and / or a temperature control zone (130) is limited by a molded element (242), wherein the molded element (242) comprises a molded element material (248) and the density of the molded element (242) is at most 0.75 g / cm. 3 is, preferably not more than 0.65 g / cm³ 3 is, particularly preferably, not more than 0.55 g / cm² 3is, wherein it is preferred if the mold element material (248) has cavities, e.g. pores (268), wherein it is particularly preferred if the mold element material (248) contains particles (264) and the particles (264) have cavities, e.g. pores (268), wherein the mold element material (248) can be, for example, a particle foam material (252). Component set for manufacturing a storage device (200), for example, according to one of claims 1 to 7, or a cell module (100), for example, according to one of claims 8 to 13, wherein the component set comprises two sealing element carriers (114) having recesses (240) for receiving a storage cell (140), wherein one sealing element carrier (114) has an insertion ramp (103) at its recess (240), and the other sealing element carrier (114) has a driver (106), wherein the driver (106) allows a storage cell (140) to be received into the recess of this sealing element carrier (114), but prevents the receiving storage cell (140) from sliding completely through the recess of this sealing element carrier (114).Component set according to claim 14, wherein the driver (106) forms a storage cell stop (108) which defines a maximum receiving depth of a storage cell (140) to be received in the recess. Sealing element carrier (114) for manufacturing a storage device (200), e.g. according to one of claims 1 to 7, or a cell module (100), e.g. according to one of claims 8 to 13, or for a component set, e.g. according to one of claims 14 or 15, wherein the sealing element carrier (114) has several recesses (240) for receiving storage cells (140), wherein the sealing element carrier (114) has an insertion chamfer (103) at at least one recess (240) and the distance between immediately adjacent recesses (240) is at most 5 mm. Method for manufacturing a storage device (200), e.g. according to one of claims 1 to 7, or a cell module (100), e.g. according to one of claims 8 to 13, wherein:. A sealing element carrier (114) is provided, which has a recess (240) for receiving a storage cell (140), the storage cell (140) is received into the recess (240), and the position of the storage cell (140) in the recess (240) is determined by attaching a sealing element (120), wherein the attachment of the sealing element (120) may include the application of a potting compound (127). The method according to claim 17, wherein: the storage cell (140) is also received into the recess (240) of a further sealing element carrier (114), and the distance between the two sealing element carriers (114) is increased while the storage cell (140) is received into the two recesses (240), and the position is subsequently determined.A method according to claim 17 or 18, wherein at least the sealing element carrier (114), in whose recess (240) the storage cell is first received, has an insertion ramp (103) on the recess (240) extending from a wide area (104) of the recess to a narrow area (105) of the recess, wherein: the storage cell (140) is received into the recess (240) such that the storage cell first enters the wide area (104) and then the narrow area (105). A method according to claim 18 or 19, wherein the further sealing element carrier (114) has a driver (106), wherein: the distance between the two sealing element carriers (114) is increased by guiding the storage cell (140) in the recesses (240) against the driver (106). - the further sealing element carrier (114) which is in contact with the storage cell via the driver (106) is continued with the storage cell (140) with an increase in the distance between the two sealing element carriers (114) and / or - the sealing element carrier (114), which does not have a driver (106), along the cell shell (144) from the further sealing element carrier (114), which is in contact with the storage cell (140) via the driver (106). Method according to one of claims 18 to 20, wherein a driver (106) is arranged on the storage cell (140), e.g., on the cell shell (144), and the dimensions of the two recesses (240) into which the storage cell (140) is received are adapted to the shape of the storage cell and the driver (106) such that the driver (106) only passes through the recess into which the storage cell is first received, and only the further sealing element carrier (114) which is in contact with the storage cell (140) via the driver (106) is continued with the storage cell (140) as the distance between the two sealing element carriers increases. Method for manufacturing a storage device (200), e.g., according to one of claims 1 to 7, or a cell module (100), e.g., according to one of claims 8 to 13, wherein the method, e.g.,a method according to any one of claims 17 to 21, wherein a direct material-bonded connection of a storage cell, e.g., the storage cell from any one of claims 17 to 21, with at least one forming element is produced by forming the at least one forming element on a surface of the storage cell in the presence of the storage cell, wherein the storage cell is preferably at least partially placed in a mold in which the at least one forming element is produced, or forms a part of the mold in which the at least one forming element is produced. Use of a storage cell (140) for transmitting a force, wherein the force displaces a sealing element carrier (114) relative to another sealing element carrier (114). Use according to claim 23, wherein, when one sealing element carrier (114) is displaced relative to the other sealing element carrier (114), the distance between the sealing element carriers (114) is increased until the... desired extent of a temperature control zone (130) extending along the cell wall (144) of the storage cell (140) is reached.

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