Device for supplying power to a motor vehicle

Abstract

Device (200) for supplying power to a motor vehicle, in particular a car or a motorcycle, with a plurality of electrochemical storage cells (101 to 110) and / or double-layer capacitors, wherein at least one of the electrodes arranged in the storage cells (101 to 110) and / or double-layer capacitors is made of metal or is entirely covered with a metal layer, and the metal electrode or the metal layer, in particular a metal foil, is electrically connected via a connecting element to a terminal (111 to 120, 121 to 130) provided outside the storage cell (101 to 110) or outside the double-layer capacitor, wherein a thermally conductive cooling plate (201, 202) is provided which is in thermal contact with the terminals (111 to 120, 121 to 130) of the storage cells (101 to 110) or double-layer capacitors, and the cooling plate (201,202) dissipates the heat energy supplied by the metal electrodes or the metal layers of the electrodes to the terminal (111 to 120, 121 to 130) via the connection element, , wherein the cooling plate (201, 202) comprises a heat-conducting metal and an electrically insulating, heat-conducting layer (203, 204, 205) is provided between the cooling plate (201, 202) and the terminals (111 to 120, 121 to 130), characterized by the fact that the heat-conducting layer (203, 204, 205) is formed from one or more heat-conducting foils (203, 204, 205) arranged one above the other.

Description

[0001] The invention relates to a device for supplying power to a motor vehicle, in particular a passenger car or a motorcycle, having a plurality of electrochemical storage cells and / or double-layer capacitors according to the preamble of claim 1.

[0002] In conventional electrochemical storage cells, cooling occurs from the outside, meaning the casing is cooled. This is complex, and adequate cooling cannot always be guaranteed with sufficient reliability. This quickly leads to defects that are economically incompatible with the service life requirements for use in automobiles.

[0003] From DE 100 03 740 C1 a battery with a heat dissipation device is known, wherein a plurality of battery cells are connected in series, wherein the series arrangement of the battery cells has an outer positive pole and an outer negative pole, wherein cell connectors are attached to the poles and wherein at least one cell connector is connected to heat dissipating means.

[0004] From JP 2002-56 904 A, a battery is known which comprises a battery container in which at least one positive electrode and one negative electrode are enclosed, and an electrode terminal having a terminal portion connected to each of the positive electrode and the negative electrode and protruding from the battery container and having a heat dissipation element fixedly arranged on the terminal portion.

[0005] The object of the invention is to provide a reliable device for supplying voltage, in particular for the temporary electric motor drive of a motor vehicle.

[0006] This object is solved by the features of independent claim 1. Advantageous embodiments of the invention are the subject of the dependent claims.

[0007] According to the invention, it is proposed to further develop a known device for supplying power to a motor vehicle, in particular a passenger car or a motorcycle, comprising a plurality of electrochemical storage cells and / or double-layer capacitors, in which at least one of the electrodes arranged in the storage cells is made of metal or is provided with a metal layer over its entire surface. The metal electrode or the metal layer, in particular a metal foil, is electrically connected via a connection element to a connection terminal provided outside the storage cell or outside the double-layer capacitor.A heat-conducting cooling plate is provided which is in thermal contact with the connection terminals of the storage cells or double-layer capacitors, and the cooling plate dissipates heat energy supplied from the metal electrodes or the metal layers of the electrodes to the connection terminal via the connection element. The cooling plate comprises a heat-conducting metal and an electrically insulating, heat-conducting layer is provided between the cooling plate and the connection terminals. The heat-conducting layer is formed from one or more heat-conducting foils arranged one above the other. Instead of cooling all the connection terminals, one-sided cooling of the storage cells can also be carried out, for example, at the connection terminals of the relevant side of the storage cells or double-layer capacitors, with the connection terminals on the opposite side remaining uncooled if this is sufficient.

[0008] Advantageously, this allows heat to be reliably dissipated directly at the source, even in automotive applications. The design effort is relatively low, and the device according to the invention is characterized by a long service life.

[0009] The electrochemical storage cells are preferably lithium-ion-based batteries or nickel-metal hydride battery cells or similar barium titanate accumulators, which are characterized by high storage capacity with low volume.

[0010] The terminals of a respective storage cell or double-layer capacitor can be formed on opposite side surfaces, on a common side surface, or—in the case of a cylindrical shape—on a cell jacket surface. Likewise, at least one terminal of a respective storage cell or double-layer capacitor can extend from its side surface to the cell jacket surface or be electrically connected to it.

[0011] The invention proposes the use of electrochemical storage cells, double-layer capacitors, or a combination thereof. The storage cells or double-layer capacitors each have a circular, prismatic, rectangular, square, oval, or flat-oval cross-section, or a flat cell design in the form of a so-called "coffee bag." Depending on the requirements, modules can be formed from storage cells or double-layer capacitors that have a high packing density without cavities or also have more or less large cavities between the storage cells or double-layer capacitors, which can be used, for example, for active cooling with a cooling medium passing through them or for passive cooling through thermal convection.

[0012] According to the invention, the cooling plate comprises a heat-conducting material, in particular metal. An electrically insulating, heat-conducting layer is provided between the cooling plate and the connecting terminals. This allows for effective cooling without the risk of short circuits.

[0013] In a further development, the heat-conducting layer is made of polyimide or PTFE. Preferably, one or more films with a total thickness of approximately 0.05 mm are used. When two or more thermally conductive films are used, arranged one above the other, it can be ruled out with a high degree of certainty that even a locally limited material defect in each of the thermally conductive films is located exactly above the other material defect. This effectively prevents electrical short circuits caused by material defects, which can never be ruled out.

[0014] In one embodiment of the invention, the thermally conductive foil is fixed to the terminals with its first side, preferably by adhesive bonding. The second side has a sliding coating, in particular a PVDF or PTFE coating. This not only fixes the position of the thermally conductive foil in place, but also allows the thermally conductive foil to slide past the thermal contact surface of the cooling plate, so that even in the event of vibrations or relative movements between the storage cell or the double-layer capacitor and the cooling plate, no damage to the thermally conductive foil occurs. This further increases the reliability of the device according to the invention and effectively prevents short circuits.

[0015] In a further development of the invention, a thermally conductive foil, shrink tubing, or coating that is plastically or elastically deformable under pressure is provided between the connection terminals of the storage cells and the cooling plate. According to the invention, such a thermally conductive foil, shrink tubing, or coating is preferably electrically insulating and preferably compensates for manufacturing tolerances in the spacing or fills gaps. This ensures good thermal contact even with typical manufacturing tolerances and vibrations. Such a thermally conductive foil preferably comprises ceramic, silicone, wax, or a mixture of different heat-conducting substrates and can have multilayer coatings.

[0016] In one embodiment of the invention, the cooling plate is provided with a plurality of heat-conducting spring elements. Each of the spring elements thermally contacts a terminal of the storage cells via the heat-conducting layer. The heat is dissipated to the cooling plate via the spring elements. This measure enables good thermal contact even with typical manufacturing tolerances that lead to variations in the distance between the storage cell and the cooling plate. Likewise, disruption of the thermally conductive connection due to vibrations is effectively prevented.

[0017] In a further development of the invention, the cooling plate has cooling channels through which a heat-dissipating medium, in particular a refrigerant such as R 134a, carbon dioxide R 744, water, or air, flows. This ensures reliable and sufficient heat dissipation at all times, even during brief peak loads on the storage cell.

[0018] In one embodiment of the invention, several cooling plates are arranged one behind the other at a distance from each other. Between the top surfaces of each two adjacent cooling plates, several storage cells or double-layer capacitors are provided. This achieves a compact design.

[0019] In one embodiment of the invention, the storage cells or double-layer capacitors provided between two adjacent cooling plates are arranged in the form of several modules of storage cells connected in series, wherein the maximum contact voltage of the modules is less than 60 volts in each case.

[0020] In a further development of the invention, a housing cover is provided that has electrical connectors that connect the modules in series between the two adjacent cooling plates when the housing cover is covering the modules and that break the series connection when the housing cover is removed. A cooling function can optionally be integrated into the housing cover.

[0021] The above measures prevent contact with a dangerous contact voltage without resulting in a reduction in the compactness of the device according to the invention.

[0022] In one embodiment of the invention, at least some of the side surfaces of the cooling plates are brought into vertical contact with a first and a second cooling wall extending over several storage cells or double-layer capacitors arranged one behind the other. The storage cells or double-layer capacitors are arranged between the first and second cooling walls. This allows the storage cells or double-layer capacitors to be housed in a compact manner and with good mechanical protection.

[0023] In one embodiment of the invention, the first and / or second cooling wall are provided with cooling channels that are connected to the cooling channels of the cooling plates. This achieves high heat dissipation with compact dimensions of the device according to the invention. Non-current-carrying parts of the device, such as the cooling walls, cooling plates, etc., can additionally be provided with an electrically insulating and heat-conducting coating. This coating can be applied to the non-current-carrying parts by painting, dip coating, or an aluminum oxide coating. The coating ensures uniform, reliable heat transfer across all connections and ensures lifelong insulation. Consequently, the non-current-carrying parts can be made of either a metallic material or a plastic material, or combinations thereof.

[0024] In one embodiment of the invention, the connection terminals of the storage cells or double-layer capacitors are electrically connected to one another via electrical connectors such that the storage cells or double-layer capacitors are connected in series. The electrical connectors are preferably sized such that they significantly increase the thermal contact area with the heat-conducting layer compared to the connection terminals alone. The connectors are preferably metal strips, cables, or strands welded or soldered onto the connection terminals. This structurally quite simple and cost-effective measure can significantly improve heat dissipation. Depending on the geometric arrangement of the connection terminals on a particular storage cell or double-layer capacitor, the metal strips can be formed from multiple parts.Depending on the geometry, the sheet metal strips can be arranged in one common plane or in multiple planes. It can also be provided that the sheet metal strips are guided around an edge of a respective storage cell and / or double-layer capacitor.

[0025] In one embodiment of the invention, printed circuit boards with conductive tracks are arranged between the electrical connectors. The conductive tracks electrically contact the terminals of each memory cell and measure the voltage applied to each of the memory cells or double-layer capacitors, the current flow, or another characteristic of the memory cell, such as its electrical capacitance. The characteristic or voltage is fed to a control device that symmetrizes or balances the energy content of the memory cells or double-layer capacitors relative to one another to increase their service life.

[0026] In one embodiment of the invention, the storage cells or double-layer capacitors, the cooling plates, and optionally the cooling walls are enclosed by thermal insulation. In one embodiment of the invention, one or more of the cooling plates and / or cooling walls are provided with a preferably electrically operated air conditioning device that dissipates the heat energy, preferably operating according to the evaporator or Peltier principle.

[0027] As a result, the device according to the invention can be reliably cooled with little effort, largely unaffected by the ambient temperature at the specific location in the vehicle at which the device according to the invention is arranged.

[0028] The invention is explained in more detail below with reference to drawings that are not necessarily to scale. Like reference numerals denote like or equivalent parts. They show: Fig. 1 a memory cell module with a plurality of memory cells, and Fig. 2 a device for supplying voltage to a memory cell module of the Fig. 1 and cooling plates, which dissipate the heat supplied via the poles of the storage cells via electrically insulating heat-conducting foils. Fig. 3 a storage cell module in a further design variant in which heat is dissipated via the poles of the storage cells.

[0029] The storage cell module 100 according to the invention has storage cells 101 to 110, which in this exemplary embodiment are arranged five storage cells one above the other in two rows. Each of the known storage cells has at least one metal electrode (not shown) arranged in the storage cell, or this electrode is provided with a metal layer (not shown) over almost its entire surface. Its internal connection element (not shown) is electrically connected to a connection terminal 111 to 120 provided outside the storage cell on the front side, or to a connection terminal 121 to 130 provided outside the storage cell on the back side. The connection terminal is preferably a contact surface in the form of a base, like a battery pole, which is contacted by a contact spring. It is understood that the battery terminal can also have a different shape.According to the invention, the heat generated in the storage cell is dissipated via the associated electrodes, connection elements and connection terminals in the manner described below.

[0030] The connection terminals of the storage cells are connected via electrical connectors 140 to 145 on their front side and electrical connectors 140 to 145 on their back side such that the ten storage cells are connected in series and the total voltage is applied to connection pins 180 and 190. In the illustrated embodiment, the electrical connectors are metal strips welded onto the poles of the connection terminals. The metal strips have a significantly larger surface area than the poles, through which the heat generated in the storage cells can be reliably and sufficiently dissipated. It is understood that the connectors can also be designed differently if this is more expedient and / or more cost-effective for the specific application of the device according to the invention.

[0031] In the area of ​​the electrical connectors, conductor tracks or contact tabs 160 to 165 are provided, which contact the corresponding terminals of the memory cells and supply the tapped voltage or another electrical variable of the respective memory cell via conductor tracks (not shown) provided on circuit boards 150 to an electronic control device 170 for balancing the voltage of the memory cells in a known manner. A first circuit board 150 is arranged on the front side between the two rows of memory cells, and a second circuit board is arranged on the back side between the two rows of memory cells. The control device 170 is arranged above the two rows of memory cells.

[0032] To improve heat dissipation from the storage cells, the storage cells are preferably enclosed by a metal casing 191, which partially encloses two storage cells arranged one above the other. The metal casing is in thermal and electrical contact with a single connector that connects the terminals of the respective storage cells in series.

[0033] Fig. 2 shows important parts of the device 200 according to the invention for supplying voltage with a storage cell module 100 and cooling plates 201 and 202, which dissipate the heat supplied via the connection terminals of the storage cells via electrically insulating heat-conducting foils 203, 204 and 205.

[0034] On the front side of the storage cell module 100, a first thermally conductive foil 203 is fixed, preferably by adhesive, with its first side to the connection terminals 111 to 120, and on the rear side of the storage cell module, a second thermally conductive foil 203 is fixed, preferably by adhesive, with its first side to the connection terminals 121 to 130. In this exemplary embodiment, its second side has a sliding coating, in particular a PVDF or PTFE coating.

[0035] In addition to the first thermally conductive foil 203, a second thermally conductive foil 204 is provided in the direction of the cooling plates 201 and 202, which is plastic or elastic under pressure. Adjacent to this, in the direction of the cooling plates, is a third thermally conductive foil 205, which largely corresponds to the first thermally conductive foil. The third thermally conductive foil 205 is preferably made of the same material as the first thermally conductive foil; however, it is preferably not provided with an adhesive layer.

[0036] The second thermally conductive foil 204 is preferably electrically insulating and preferably compensates for manufacturing tolerances of the distance between the storage cell module 100 and the cooling plates 201 and 202 after their installation between cooling plates.

[0037] As from Fig. 2, two storage cell modules 100 can be inserted next to each other between the cooling plates 201 and 202 and cooled. As indicated by the cooling wall 207 extending beyond the cooling plates, further cooling plates follow these cooling plates, between which - not explicitly shown - storage cell modules 100 are arranged in the manner described. Before the Fig. In the storage cell module 100 shown in Figure 2, a further cooling wall 207 is provided (not shown), meaning that two storage cell modules are each enclosed by an arrangement of two cooling plates and two cooling walls. It is understood that more or fewer modules can also be provided between adjacent cooling plates.

[0038] In order to establish a reliable thermal contact between the poles or connection terminals 111 to 120 and 121 to 130 of the storage cells and the cooling plates 201 and 202, the cooling plates are provided with a plurality of heat-conducting spring elements 210, ie each spring element contacts a pole or a connection terminal of a storage cell thermally (not electrically) via the electrically insulating arrangement of the three heat-conducting foils 203, 204 and 205.

[0039] Both the cooling plates and the cooling walls are preferably made of aluminum or another metal and preferably have cooling channels 206 through which a heat-dissipating medium is conducted to a heat exchanger. If appropriate, the cooling channels can be omitted, and one or more cooling walls or cooling plates are provided with a Peltier cooling device and cooled.

[0040] Preferably, the device 200 has a removable housing cover (not shown). The housing cover has second electrical connectors (not shown) that connect the modules in series when the housing cover is covering the modules and that cancel the series connection when the housing cover is removed. Preferably, after the series connection(s) are canceled by removing the cover, there is no dangerously high contact voltage anywhere on the device according to the invention.

[0041] In the in the Fig. 1 and Fig. In the embodiments described in Figure 2, the storage cells have a cylindrical shape, with the poles arranged on their opposite top surfaces. Due to the heat path corresponding to the current path, the heat is dissipated from the respective storage cells in the axial direction.

[0042] In addition to this axial cooling, radial cooling can be achieved via the respective cell casing surfaces by arranging a heat-conducting material between two storage modules and / or between the two rows of storage cells of a respective storage cell module. This heat-conducting support structure, e.g. in the form of module fastening shells, can be heat-conductingly connected to the cooling plates (arranged on the front side) for heat dissipation. The module fastening shells can, for example, be made of a plastic and / or metallic materials, with an electrically insulating but heat-conducting coating being provided. Particularly efficient heat dissipation from the storage cells of a respective storage module results when the module fastening shells are designed in such a way that they have a surface shape that is negative to that of the storage cells.This brings the module mounting shells into large-area contact with the storage cells of a storage cell module.

[0043] Fig. Figure 3 shows a further memory cell module 100 according to the invention in a different embodiment. The memory cell module 100 has memory cells 101 to 110, 110a, which in this embodiment are arranged in two rows, each six memory cells high above the other. Each of the memory cells has a connection terminal 111 to 120, 120a on the front side and corresponding connection terminals 121 to 130, 130a on the back side (in the Fig. 3 not visible). The connection terminals are, as in the previous exemplary embodiment, a contact surface in the form of a base, like a battery pole. For example, each connection terminal to which a positive potential is applied can be electrically connected to a cell jacket surface 322 to 330, 330a. It is understood that in this case, adjacent storage cells are arranged electrically insulated from one another. The electrical insulation can be ensured, for example, by the design of a carrier 320 in which the respective storage cells are mounted in corresponding shells. The carrier 320, which is also referred to as a module fastening shell, can optionally be made of plastic and / or a metallic material, as long as the required electrical insulation is provided.

[0044] Due to the fact that the poles or connection terminals of a respective storage cell are no longer or no longer exclusively arranged on the opposite cover surfaces of the cylindrical storage cells, a modified electrical connection of the storage cells can be made, which leads to a modified arrangement of the cooling plates.

[0045] The terminals of the storage cells are connected via electrical connectors so that the twelve storage cells are connected in series and the total voltage is applied to the terminals 111, 112. In the illustrated embodiment, the electrical connectors are formed by angled metal strips 140a, 140b to 145a, heat dissipators 302 to 310, 310a applied to the front side, cell jacket surfaces 322 to 330, 330a, and angled metal strips 146a, 146b to 148a, 148b on the rear side. The metal strips 140a to 148b and the heat dissipators 302 to 310, 310a are welded, for example, to the terminal poles or the cell jacket surfaces.

[0046] The heat dissipating bodies 302 to 310, 310a are formed from an electrically conductive material or are provided with an electrically conductive coating. The sections of sheet metal strips of two superimposed storage cells that extend only briefly or along the cell casing are electrically conductively connected to one of the heat dissipating bodies. The electrical connection can be realized, for example, by welding. It is understood that the shape of the sheet metal strips and the heat dissipating bodies can be adapted to a respective shape of the storage cells and the Fig. 3 shown forms are merely examples.

[0047] In addition to the axially arranged cooling plates, which are connected in a heat-conducting but electrically insulated manner to the sheet metal strips 140a to 145a on the front side and 146a to 148b on the rear side, additional cooling plates for heat dissipation can be provided on the side of the storage cell module 100. The cooling plates arranged on the side of the storage cell module 100 are electrically insulated and brought into contact with the heat dissipating bodies 302 to 310, 310a in a heat-conducting manner. Due to a possible large-area connection, this ensures good heat transfer.

[0048] In a further variant, cooling plates could also be arranged exclusively on the sides of the storage cell module 100. The cooling plates can, in turn, be thermally connected to one or more cooling walls to enable the simple cooling of a plurality of storage cell modules.

[0049] In another variant, it is not mandatory for the cell surface areas of each storage cell to be charged with a potential. In this case, too, the connectors could have the shape shown in the figure for serially connecting the twelve storage cells, allowing for a lateral arrangement of the cooling plates.

[0050] The provision of lateral cooling plates enables radial heat dissipation from the storage cells via the cell surface, ensuring good heat dissipation due to a large heat transfer surface. In particular, this also enables simple cooling between two adjacent storage cell modules.

[0051] The Fig. The memory cell module shown in Figure 3 can be used in accordance with the description of the embodiment in Fig.1, a control device provided above the two rows of memory cells. Likewise, a first circuit board can be arranged on the front side shown in the figure between the two rows of memory cells, and a second circuit board can be arranged on the back side between the two rows of memory cells, which contact the respective memory cells via conductor tracks in order to balance the voltage of the memory cells in a known manner.

Claims

[1] Device (200) for supplying voltage to a motor vehicle, in particular a passenger car or a motorcycle, having a plurality of electrochemical storage cells (101 to 110) and / or double-layer capacitors, wherein at least one of the electrodes arranged in the storage cells (101 to 110) and / or double-layer capacitors consists of metal or is provided over its entire surface with a metal layer, and the metal electrode or the metal layer, in particular a metal foil, is electrically conductively connected via a connection element to a connection terminal (111 to 120, 121 to 130) provided outside the storage cell (101 to 110) or outside the double-layer capacitor, wherein a heat-conducting cooling plate (201, 202) is provided which is in thermal contact with the connection terminals (111 to 120, 121 to 130) of the storage cells (101 to 110) or double-layer capacitors, and the cooling plate (201,202) dissipates the heat energy supplied from the metal electrodes or the metal layers of the electrodes to the connecting terminal (111 to 120, 121 to 130) via the connecting element, wherein the cooling plate (201, 202) comprises a heat-conducting metal and an electrically insulating, heat-conducting layer (203, 204, 205) is provided between the cooling plate (201, 202) and the connecting terminals (111 to 120, 121 to 130), characterized by , that the heat-conducting layer (203, 204, 205) is formed from one or more heat-conducting foils (203, 204, 205) arranged one above the other. [2] Device (200) according to claim 1, characterized by that the heat-conducting layer (203, 204, 205) is made of polyimide or PTFE. [3] Device (200) according to claim 1 or 2, characterized by that the heat-conducting layer (203, 204, 205) has a total thickness of 0.05 mm. [4] Device (200) according to one of the preceding claims, characterized by that a heat-conducting foil (203) is fixed with its first side to the connection terminals (111 to 120, 121 to 130), preferably by adhesive bonding, and that its second side has a sliding coating, in particular a PVDF or PTFE coating. [5] Device (200) according to one of the preceding claims, characterized by that between the connection terminals (111 to 120, 121 to 130) of the storage cells (101 to 110) or double-layer capacitors and the cooling plate (201, 202) there is provided a heat-conducting foil (204) which is plastically or elastically deformable under pressure or a shrink tube or a coating which is preferably electrically insulating and preferably compensates for or fills manufacturing tolerances of the distance. [6] Device (200) according to one of the preceding claims, characterized bythat the cooling plate (201, 202) is provided with a plurality of heat-conducting spring elements (210) and each of the spring elements (210) thermally contacts a connection terminal (111 to 120, 121 to 130) of the storage cells (101 to 110) or double-layer capacitors via the heat-conducting layer (203, 204, 205) and that the heat is dissipated to the cooling plate (201, 202) via the spring elements (210). [7] Device (200) according to claim 1 or 2, characterized by that the cooling plate (201, 202) has cooling channels (206) through which a heat-dissipating medium, in particular a refrigerant such as R 134a, carbon dioxide R 744, water or air, flows. [8] Device (200) according to one of the preceding claims, characterized bythat a plurality of cooling plates (201, 202) are arranged one behind the other at a distance from one another and a plurality of storage cells (101 to 110) or double-layer capacitors are provided between the cover surfaces of two adjacent cooling plates (201, 202). [9] Device (200) according to claim 7, characterized by that the storage cells (101 to 110) or double-layer capacitors provided between two adjacent cooling plates (201, 202) are arranged in the form of several modules (100) of series-connected storage cells (101 to 110) and are covered by a housing cover, wherein the maximum contact voltage of the modules (100) is in each case less than 60 volts. [10] Device (200) according to claim 9, characterized bythat the housing cover has electrical connectors (140 to 145) which connect the modules (100) in series between the two adjacent cooling plates (201, 202) when the housing cover covers the modules (100) and which cancel the series connection when the housing cover is removed. [11] Device (200) according to one of the preceding claims, characterized by that at least some of the side surfaces of the cooling plates (201, 202) are brought into vertical contact with a first and a second cooling wall (207) extending over a plurality of storage cells (101 to 110) or double-layer capacitors arranged one behind the other, wherein the storage cells (101 to 110) or double-layer capacitors are arranged between the first and the second cooling plate (201, 202). [12] Device (200) according to claim 11, characterized bythat the first and / or second cooling wall (207) is provided with cooling channels (206) which are connected to the cooling channels (206) of the cooling plates (201, 202). [13] Device (200) according to one of the preceding claims, characterized by that the connecting terminals (111 to 120, 121 to 130) of the storage cells (101 to 110) or double-layer capacitors are electrically connected to one another via electrical connectors (140 to 145), preferably sheet metal strips (140 to 145), cables or strands soldered or welded onto the connecting terminals (111 to 120, 121 to 130), in such a way that the storage cells (101 to 110) or double-layer capacitors are connected in series and the electrical connectors (140 to 145) are preferably dimensioned in such a way that they significantly increase the thermal contact area with the heat-conducting layer (203, 204, 205). [14] Device (200) according to the preceding claim, characterized bythat at least one printed circuit board (150) is arranged between the electrical connectors (140 to 145), which has contact lugs (160 to 165), the contact lugs (160 to 165) electrically contact the connection terminals (111 to 120, 121 to 130) of each storage cell (101 to 110) and tap the voltage applied to each of the storage cells (101 to 110) or double-layer capacitors, the current flow or another characteristic of the storage cell (101 to 110) or the double-layer capacitor, such as the electrical capacitance, and feeds it to a control device (170) which symmetrically or compensates the energy content of the storage cells (101 to 110) and / or the double-layer capacitors relative to one another in order to increase the service life. [15] Device (200) according to one of the preceding claims, characterized bythat the storage cells (101 to 110) or double-layer capacitors, the cooling plates (201, 202) and optionally the cooling walls (207) are enclosed by thermal insulation. [16] Device (200) according to one of the preceding claims, characterized by that one or more of the cooling plates (201, 202) and / or the cooling walls (207) are provided with a preferably electrically operated air conditioning device which dissipates the thermal energy and which preferably operates according to the evaporator or Peltier method. [17] Device (200) according to one of the preceding claims, characterized by that the connecting elements or connecting terminals (111 to 120, 121 to 130) or poles of the storage cell (101 to 110) or of the double-layer capacitor are provided at both ends or axially or next to each other on one side or radially. [18] Device (200) according to one of the preceding claims 9 to 17, characterized bythat the storage cells (101 to 110) or double-layer capacitors of a module (100) each have a circular, prismatic, rectangular, square, oval or flat-oval cross-section or a flat cell design in the form of a so-called coffee bag.

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