EP4537416A1 - Temperierungs- und entgasungsanordnung für energiespeicherzellen sowie energiespeicher - Google Patents
Temperierungs- und entgasungsanordnung für energiespeicherzellen sowie energiespeicherInfo
- Publication number
- EP4537416A1 EP4537416A1 EP23729142.2A EP23729142A EP4537416A1 EP 4537416 A1 EP4537416 A1 EP 4537416A1 EP 23729142 A EP23729142 A EP 23729142A EP 4537416 A1 EP4537416 A1 EP 4537416A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- temperature control
- energy storage
- support structure
- degassing
- arrangement according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
- H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
- H01M50/231—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks having a layered structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
- H01M50/358—External gas exhaust passages located on the battery cover or case
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/647—Prismatic or flat cells, e.g. pouch cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present invention relates, on the one hand, to a novel temperature control and degassing arrangement for energy storage cells of an energy storage device according to the preamble of claim 1 and, on the other hand, to an energy storage device, in particular an energy storage device for the automotive sector, according to the preamble of claim 17 using the novel cell contacting system.
- Energy storage Central point in the development of electrically powered means of transport, e.g. B. electric vehicles, is the energy storage.
- energy storage devices with a high power and energy density are required.
- Energy storage usually consists of a plurality of individual energy storage cells (e.g. lithium-ion battery cells) that are electrically connected to each other.
- Energy storage systems usually require temperature management to ensure their operation in an optimized temperature range.
- the energy storage cells usually have a narrow working temperature range (e.g. between +15 °C and +45 °C).
- the functional safety, service life and cycle stability of the energy storage cell and thus also the functional safety of the entire energy storage system depend significantly on the energy storage cell not leaving this area. If the temperature exceeds a critical level, a so-called “thermal runaway” occurs.
- the Thermal Runaway sets off an unstoppable chain reaction.
- the temperature rises extremely within milliseconds and the energy stored in the energy storage cell is suddenly released. This can result in temperatures over 1000 °C.
- the contents of the energy storage unit become gaseous and a fire occurs that is difficult to extinguish using conventional means.
- the danger of a thermal runaway begins at a certain point Temperature (e.g. 60 °C) and becomes extremely critical above a further temperature threshold (e.g. 100 °C).
- a further temperature threshold e.g. 100 °C
- the gas-tight sealed energy storage cells can have degassing openings.
- the degassing openings can, for example, be designed as predetermined breaking points, which allow gases from the interior of the energy storage cell to escape into the environment above a certain internal pressure.
- the escaping gases may contain electrolytes that can react with water to form hydrofluoric acid. In order to reduce the risk to surrounding components and/or people, such gases must be controlled and systematically removed.
- energy storage devices To electrically connect the energy storage cells, energy storage devices have so-called cell connectors, which, depending on the circuit type, electrically connect two or more poles of two or more energy storage cells to one another. In a series connection, for example, the anode of one energy storage cell is connected to the cathode of another energy storage cell.
- each cell connector can be electrically connected to the control and/or regulation electronics of the energy storage device. This allows the cell voltage of each individual energy storage cell to be measured and the state of charge of the respective energy storage cell to be derived via the cell voltage.
- sensors e.g. B. temperature sensors for monitoring the surface temperature of the energy storage cells, which are connected to the control and / or regulation electronics. In previous solutions, the control and/or regulation electronics are located in an independent assembly. Printed state of the art
- DE 10 2007 063 178 A1 discloses a battery with a heat-conducting plate for temperature control of the battery.
- the battery comprises a plurality of individual cells connected to one another.
- the heat-conducting plate has holes and/or incisions in the area of the poles of the individual cells, through which the poles of the individual cells protrude in and out.
- the heat-conducting plate is arranged between the individual cells and contacting elements placed on the poles.
- Electrical cell connectors arranged pole by pole and/or a cell connector board are provided as contacting elements for electrically connecting the poles of the individual cells.
- elastic elements and/or contacting elements can be located on the top of the heat-conducting plate. This sequence of these individual layers must be clamped to the individual cells using screws during assembly. The assembly is therefore complex.
- DE 10 2009 046 385 A1 discloses a battery with a degassing system.
- the degassing system is located on the side opposite the poles of the battery cells.
- the DE 10 2012 219 784 A1 discloses a battery module that has a gas channel, a circuit board and a battery module housing that accommodates a plurality of battery cells.
- the gas channel is formed by a U-profile with through openings to the degassing openings of the battery cells and a circuit board closing the U-profile on the side facing away from the degassing openings.
- the circuit board thus forms a wall of the gas channel and can come into direct contact with the gas when gas emerges from a gas outlet opening of a battery cell.
- the circuit board is attached directly to the busbars.
- the U-profile is not directly connected to the busbars.
- the disadvantage of this arrangement is that escaping gas can destroy the unprotected circuit board. A control and/or regulation of the In this case, the battery module is no longer guaranteed. Furthermore, no active temperature control of the battery cell surface or the cell connector is provided.
- EP 3 316 384 A1 discloses a circuit board arrangement according to the preamble of claim 1.
- a rigid circuit board is provided for control and/or regulation electronics, on which cell connectors for connecting the energy storage cells are directly applied flat. This direct connection of the cell connectors to the control and/or regulation electronics results in a direct heat transfer from the electrical connections of the energy storage cells to the control and/or regulation electronics. Such an arrangement leads to unavoidable measurement deviations when measuring voltage and temperature.
- a C-shaped, flexible circuit board carrying a temperature sensor element is fixed to the rigid circuit board. The flexible circuit board extends through a slot-shaped through opening in the rigid circuit board. The construction is complex and expensive, both in terms of the production of the individual parts and the final assembly.
- the object of the present invention is to provide a novel temperature control and degassing arrangement for energy storage cells, which reduces the assembly effort and requires little installation space.
- the support structure comprises at least one degassing channel integrated in the support structure for discharging gases emerging from the energy storage cells.
- the at least one degassing channel and the at least one temperature control channel thus form an integral part of the support structure and thus an integrated, compact, scalable cell contacting system. Because both the at least one temperature control channel and the degassing channel are an integral part of the support structure, the assembly effort when completing an energy storage device can be significantly reduced. In addition, the functional reliability of the energy storage is increased and the required installation space is reduced.
- the degassing channel enables the targeted removal of hot gases during a thermal runaway of the energy storage device.
- the support structure offers the possibility of attaching additional functional parts (such as a circuit board or printed circuit), which carry the control and regulation electronics of the energy storage or the individual energy storage cells, to the back of the degassing channel. Compared to conventional designs, the number of parts can be reduced.
- additional functional parts such as a circuit board or printed circuit
- the at least one degassing channel and the at least one temperature control channel are each formed into the support structure.
- the support structure is designed as an individual component and can be produced in a single production step.
- greater functional reliability is achieved due to the lack of connection points between the various channels.
- the degassing channel can expediently be designed to be open on the first side of the support structure.
- the degassing channel is thus designed as a recess in the support structure that is open on one side, with the top of the energy storage or its energy storage cells lying opposite the degassing channel in the assembled state.
- escaping gases can be collected and discharged in the degassing channel with a simple design of the support structure without additional components.
- In the area of the degassing channel there are corresponding predetermined breaking points on the energy storage cells, which ensure that thermal runaway occurs in a targeted manner Gases emerge at these points and can be removed via the degassing channel.
- the surface of the energy storage cells thus delimits the degassing channel on the side of the degassing channel opposite the support structure.
- the support structure therefore does not require any openings that are locally assigned to the predetermined breaking points.
- the support structure expediently has a wall delimiting the degassing channel, the side opposite the degassing channel serving as a mounting base for further components.
- the aforementioned side of the wall can therefore be used for mounting further components of the cell contacting system, for example for mounting a circuit board or printed circuit that includes the control and/or regulation electronics, and/or for mounting sensor arrangements, for example sensor arrangements for determining the temperature of the energy storage device. serve.
- the wall therefore fulfills a dual function.
- the wall for example, protects the circuit board or printed circuit from thermal and/or chemical influences.
- the wall preferably extends between two temperature control channels.
- the wall has an offset forming a mounting recess.
- the other components of the cell contacting system can thereby be mounted recessed in the mounting recess. This protects them. At the same time, this reduces the installation space and at the same time increases the mechanical stability of the support structure.
- the support structure can expediently have fastening and/or centering means and/or through openings and/or spacers for a circuit board or printed circuit, preferably in the area of the mounting recess. These serve to facilitate assembly, increase the safety of the assembled arrangement or ensure that the control and/or regulation electronics or their circuit board are spaced on the underside towards the wall.
- the inside of the degassing channel has a protective layer, in particular against heat and/or abrasive media and/or chemical influences (eg due to acids).
- the underside of the respective temperature control channel can also have a protective layer.
- the protective layer can be an applied coating (e.g. a liquid curable coating, e.g. paints with the addition of ceramic particles, foamed and hardened coating or e.g. a powder coating) or a layer placed on and/or connected to the wall or the wall section in question (e.g. a Mica board, a ceramic fiber board, a fiberglass board, a carbon mat or a cork board).
- a liquid curable coating e.g. paints with the addition of ceramic particles, foamed and hardened coating or e.g. a powder coating
- a layer placed on and/or connected to the wall or the wall section in question e.g. a Mica board, a ceramic fiber board, a fiberglass board, a carbon mat or a cork board.
- the at least one temperature control channel and temperature control lines that connect to the at least one temperature control channel are preferably designed to be tight at all interfaces.
- the wall expediently extends between two or at least two temperature control channels.
- the temperature control channels are preferably located in the outer region of the support structure.
- the support structure also makes it possible for a third or a third and fourth temperature control channel to be located between two edge-side temperature control channels. In this way, the temperature of the circuit board arranged on the top of the support structure can advantageously also be carried out.
- the support structure enables the cell connectors and the support structure to be connected to form a jointly mountable assembly.
- the cell connectors serve to create an electrical connection between the individual energy storage cells and are therefore fixed to the pole contacts of the same, for example welded or screwed.
- the carrier By mounting the cell connectors on the energy storage cells, the carrier can The structure with the degassing channel, the temperature control channels and the circuit board can be assembled in a single operation.
- the cell contacting system can therefore advantageously be kept as a pre-assembled assembly module.
- the at least one temperature control channel can have through openings arranged laterally to its longitudinal axis. These can serve to accommodate the cell connectors and/or molded cooling geometries of the cell connectors and/or to fix them there.
- Plastic offers high corrosion resistance, thermal insulation and electrical insulation properties with low weight.
- an electrically conductive fluid can be used in the temperature control channels.
- Aluminum or an aluminum alloy offer the advantage of increased mechanical resistance.
- a non-electrically conductive fluid must be used for temperature control.
- the support structure is a profile structure, preferably a hollow profile structure.
- the present invention further relates to an energy storage device according to the preamble of claim 17.
- the energy storage device comprises a cell contacting system according to at least one of claims 1 to 16.
- Fig. 2 is a perspective longitudinal sectional view of the exemplary embodiment of the energy storage device from Fig. 1 along the section line AA;
- FIG. 3 shows a front view of the exemplary embodiment of the cell contacting system from FIG. 1;
- FIG. 4a is a perspective view of the support structure of the cell contacting system from FIG. 1;
- FIG. 4b is a perspective view of a further embodiment of a support structure
- FIG. 4c is a perspective view of a further embodiment of a carrier structure
- FIG. 5 shows a perspective view of the cell contacting system from FIG. 1 as a mountable assembly
- FIG. 6a is a perspective view of the circuit board of the cell contacting system from FIG. 1, which includes the control and regulation electronics of the energy storage cells or the energy storage, with temperature sensor arrangements fixed thereto;
- 6b is a perspective view of a further embodiment of a circuit board of the cell contacting system with temperature sensor arrangements fixed thereon;
- FIG. 7a is a perspective view of a temperature sensor arrangement of the cell contacting system from FIG. 1;
- Fig. 7b is a sectional view of the temperature sensor arrangement from Fig. 7a;
- FIG. 8a is a perspective view of a further embodiment of a temperature sensor arrangement for a cell contacting system
- Fig. 8b is a sectional view of the temperature sensor arrangement from Fig. 8a;
- FIGS. 7a and 7b shows a perspective detailed view of the temperature sensor arrangement from FIGS. 7a and 7b in the assembled state
- FIG. 9b shows a perspective detailed view of the temperature sensor arrangement from FIG. 7b in the assembled state
- 10a is a perspective view of the circuit board arrangement consisting of the circuit board and additional circuit board of the cell contacting system from FIG. 1;
- Fig. 10b is a perspective view of the circuit board arrangement consisting of the circuit board and additional circuit board of the cell contacting system from Fig. 1;
- FIG. 11a shows a top view of the cell contacting system from FIG. 1 with the carrier structure omitted;
- 11b is a perspective view of the cell contacting system from FIG. 1 with the carrier structure omitted;
- Fig. 12a is a partial perspective view of the circuit board arrangement from Fig. 1 in the area of the spacers;
- Fig. 12b is a partial perspective view of the circuit board arrangement from Fig. 1 in the area of the connection of the circuit board and additional circuit board;
- 12c is a partial perspective view of an alternative embodiment of the circuit board arrangement in the area of the connection of the circuit board and additional circuit board; 13a shows a perspective detailed view of a cell connector from FIG. 1;
- FIG. 13b shows a perspective detailed view of a connection-side cell connector from FIG. 1;
- 14a is a perspective view of a further embodiment of a temperature control structure of a cell connector
- 14b is a perspective view of a further embodiment of a temperature control structure of a cell connector
- 14c is a perspective view of a further embodiment of a temperature control structure of a cell connector
- 14d is a perspective view of a further embodiment of a temperature control structure of a cell connector
- 15a is a perspective view of a further embodiment of a cell connector
- Fig. 15b is a side view of the cell connector according to Fig. 15a;
- 16a is a perspective view of a further embodiment of a cell connector
- Fig. 16b is a side sectional view of the cell connector according to Fig. 16a;
- 17a is a perspective view of a further embodiment of a cell connector. as well as
- Fig. 17b is a perspective view of a further embodiment of a cell connector without a temperature control structure.
- Reference number 3 in FIG. 1 designates an energy storage device 3 in its entirety. This is in particular a battery e.g. B. for an electric vehicle with an electric drive.
- the energy storage 3 has a plurality of energy storage cells 2a, 2b, 2z arranged in a series connection.
- Reference number 1 designates an example of a cell contacting system which is intended to electrically connect the individual energy storage cells 2a, 2b, 2z to one another.
- the energy storage cells 2a, 2b, 2z each have two pole contacts 22a, 22b (of which only one pole contact 22a can be seen in FIG. 2), namely a pole contact 22a for an anode and a pole contact 22b for a cathode.
- the pole contacts 22a, 22b can have a substantially flat surface or can be designed as a plate.
- the cell contacting system 1 further comprises a support structure 13 and cell connectors 11a, 11b attached to the support structure 13, which serve for electrical contacting and connection of the individual energy storage cells 2a, 2b, 2z. Furthermore, control and/or regulation electronics 16 are positioned on the support structure 13 and are electrically connected to the cell connectors 11a, 11b via connecting elements 15.
- the control and/or regulation electronics 16 includes a circuit board 161a equipped with corresponding electronic components 162, which is connected to the support structure 13.
- the complete cell contacting system 1 can be attached to the energy storage cells 2a, 2b, 2z of the energy storage 3 via the cell connectors 11a, 11b.
- the cell connectors 11a, 11b can be welded, for example, to the pole contacts 22a, 22b.
- the cell contacting system 1 can thereby be kept as a composite assembly and assembled as a unit on the energy storage cells 2a, 2b, 2z in one step as part of an automated production line.
- the cell contacting system 1 includes temperature control channels 131, described in more detail below, and a degassing channel 132, which are integrated into the support structure 13 according to the invention.
- the temperature control channels 131 serve to pass a gaseous or liquid fluid (not shown in the figures) through the latter for temperature control of the energy storage device 3.
- the degassing channel 132 serves to remove gases released in a controlled manner in the event of a so-called “thermal runaway” of the energy storage device 3.
- a degassing opening 21 can be seen from FIG. 2. It opens into the degassing channel 132.
- the degassing opening 21 can, for example, be designed as a predetermined breaking point, so that in the event of “thermal runaway” the gases generated inside the energy storage cells 2a, 2b, 2z can escape at this point.
- fourteen energy storage cells 2a, 2b, 2z are shown, which are electrically connected to one another in a series connection by the cell contacting system 1.
- the energy storage cells 2a, 2b, 2z are each arranged rotated relative to one another, so that the pole contact 22a of the anode of the energy storage cell 2a is opposite the pole contact 22b of the cathode of the adjacent energy storage cell 2b or the pole contact 22b of the cathode of the energy storage cell 2b is opposite the pole contact 22a of the anode of the adjacent one Energy storage cell 2a is opposite.
- the pole contact 22b of the cathode of the first energy storage cell 2a is connected to the terminal cell connector 11b.
- the pole contact 22a of the anode of the first energy storage cell 2a is connected via the cell connector 11a to the pole contact 22b of the cathode of the adjacent second energy storage cell 2b.
- the pole contact 22a of the anode of the second energy storage cell 2b is in turn connected via a cell connector 11a to the pole contact 22b of the cathode of the third energy storage cell, etc.
- the pole contact 22a of the anode of the last energy storage cell 2z is connected to the cell connector 11b.
- the cell connectors 11b are intended to electrically connect the energy storage device 3 to an electrical consumer (not shown), e.g. B. the electric motor of an electric vehicle.
- the two cell connectors 11b thus form the energy storage connections, ie the cathode and anode of the entire energy storage 3.
- a different number of energy storage cells can also be provided and/or the energy storage cells can be connected in parallel by the cell contacting system 1.
- the cell connectors 11a, 11b can, for example, connect the electrical connections 22a of the anodes of two or more energy storage cells or the electrical connections 22b of the cathodes of two or more energy storage cells to one another.
- the energy storage cells can also be arranged in a row in the same orientation, ie not rotated, so that the electrical connections of the cathodes of the energy storage cells of the energy storage 3 are arranged along a first line and the electrical connections of the anodes of the energy storage cells are arranged along a second line running parallel to the first line are.
- Fig. 3 shows the cell contacting system 1 in a front view.
- the support structure 13 has a first side 137 facing the energy storage 3 or the energy storage cells 2a, 2b, 2z, which serves as a mounting side on the energy storage 3 (not shown in FIG. 3) or the energy storage cells 2a, 2b, 2z, as well a second side 138 facing away from the energy storage 3 or the energy storage cells 2a, 2b, 2z.
- the support structure 1 has two lateral temperature control channels 131 located in the area of the cell connectors.
- the degassing channel 132 is located in between.
- the temperature control channels 131 and the degassing channel 132 are formed into the support structure 1 according to the invention.
- the degassing channel 132 is formed by the lateral, opposite temperature control channels 131 and by a wall 139 which runs between the temperature control channels 131.
- the degassing channel 132 is open on the first side 137 of the support structure 13 in the direction of the energy storage cells 2a, 2b, 2z.
- gases can pass from the degassing openings 21 of the energy storage cells 2a, 2b, 2z into the degassing channel 132 and can be removed from there in a controlled manner. This increases the protection of vehicle occupants.
- the support structure 13 is, as can be seen from FIG.
- the support structure 13 can be designed as a profile structure, preferably as a hollow profile structure. This makes it possible to create a cell contacting system 1 with a comparatively low weight.
- the support structure 13 is provided in the area of the first side 137 with a protective layer 133 (see FIG. 3), in particular against heat and/or abrasive media and/or chemical influences (e.g. acids).
- the protective layer 133 can consist of a heat- and/or acid-resistant material.
- the protective layer 133 can be either an applied coating (e.g. a liquid, curable coating, e.g. a lacquer with the addition of ceramic particles, a foamed and cured coating or a powder coating) or a layer applied to the wall (e.g B. Mica boards, ceramic fiber, glass fiber or carbon mats or cork boards) or a combination thereof.
- the protective layer can also be provided additionally under the temperature control channels 131a, 131b (as cannot be seen from the figures).
- the temperature control channels 131 are each formed by a hollow chamber. 3, the temperature control channels 131 have lateral through-openings 140 into which cell connectors 11a, 11b coated with a cooling structure 12 are inserted and fastened.
- the cooling structure 12 can, for. B. be glued and/or welded to the support structure 1.
- the through opening 140 is tightly closed in this way.
- the cooling structure 12 of the cell connectors 11a, 11b is surrounded by the fluid for temperature control in the temperature control channels 131 and is in thermal contact with the fluid.
- the support structure 13 has a mounting recess 135 on the second side 138 opposite the degassing channel 132. This is formed by an offset of the wall 139.
- the mounting recess 135 is used for particularly space-saving positioning of the control and/or regulation electronics 16.
- the mounting recess 139 can be attached to the mounting base Fastening and/or centering means 136 for fastening and/or centering the circuit board of the control and/or regulation electronics 16 may be provided.
- Spacers 136a can also be provided, which cause the underside of the control and/or regulation electronics 16 or its circuit board 161a to be spaced from the mounting base of the mounting recess 139.
- the mounting recess 135 enables a flat structure of the cell contacting system 1.
- the offset of the wall 139 forming the mounting recess 135 also serves to increase the mechanical stability of the support structure 13.
- the offset acts like a bead, ie a channel-shaped stiffener, whereby the area moment of inertia of the support structure 13 is increased.
- the support structure 13 can therefore better withstand, for example, a pressure increase in the degassing channel 132 that occurs when the energy storage cells 2a, 2b, 2z are degassed.
- the wall 139 has through openings 141 for temperature sensor arrangements 17a, 17b and/or for contacting a sensor board 18a, 18b.
- the circuit board 161a has, for example, holes through which the circuit board 161a is plugged onto the fastening and/or centering means 136, designed as a “dome” in the exemplary embodiment. The ends of the domes can then be compressed into mushroom heads, whereby the circuit board 161a is attached to the support structure 13.
- more than two temperature control channels 131 can also be formed into the support structure 13.
- an additional temperature control channel 131 can be located in the middle on the underside of the wall 139, whereby the wall 139 between the two outer temperature control channels 131 and thus a circuit board located on the top can be additionally temperature controlled.
- a second temperature control channel 131 is provided in the side area.
- the cell contacting system 1 shows the cell contacting system 1 according to the invention as pre-assembled cell connectors 11a, 11b, the temperature control channels 131, and the degassing channel 132 as well as the control and/or regulation electronics 16 comprising the assembly.
- the cell contacting system 1 simplifies the production of energy storage 3 considerably by simply mounting the cell connectors on the energy storage cells, for example. B. can be done via welding.
- the cell connectors can also be screwed or soldered to the energy storage cells.
- Through openings 111 for example through holes, can be provided on the cell connectors 11a, 11b. These can serve as inspection openings. Furthermore, if necessary, measuring lines can also be attached to threaded holes located under the through openings 111 on the pole contacts 22a, 22b through these through openings 111. This allows, for example, the contacting of the cell connectors 11a, 11b with the pole contacts 22a, 22b to be checked.
- the cell connectors 11a, 11b could also be connected to the pole contacts 22a, 22b via the through openings 111, for example screwed.
- 6a and 6b show two exemplary embodiments of temperature sensor arrangements 17a, 17b for detecting the temperature on an upper side 23, not shown, of an energy storage cell 2a, 2b, 2z.
- the temperature sensor arrangement 17a is mounted on the circuit board 161a and the temperature sensor arrangement 17b is mounted on the circuit board 161b via a snap connection.
- the circuit board 161b can also be provided for temperature sensor arrangements 17a.
- FIG. 7a and 7b show a perspective view and a sectional view of a first exemplary embodiment of the temperature sensor arrangement 17a.
- the temperature sensor arrangement 17a has a flexible sensor board 176a with a sensor element 171a integrated on the sensor board 176a and a Housing molded element 172a for mounting on the circuit board 161a, 161b from FIGS. 6a, 6b.
- the housing molded element 172a includes a guide groove 179a for the flexible sensor board 176a and thus serves to position and hold the sensor element 171a. Furthermore, the housing shaped element 172a has a base 178a with connecting means 175a and an elastically deflectable spring arm 177a.
- the connecting means 175a are designed as a snap connection with two resilient locking arms. They are used to connect to the circuit board 161a from Fig. 6a. Steps 178c are also provided on the connecting means 175a, which serve to rest on the underside of the circuit board 161a.
- the sensor board 176a has electrical connections 174a, which are electrically connected to the sensor element 171a via conductor tracks, not shown.
- an elastic, thermally conductive contact element 173a is provided on the underside of the temperature sensor arrangement 17a in the area of the sensor element 171a in order to avoid gap formation and to transmit the temperature of the energy storage cells to be detected to the sensor element 171a.
- FIGS. 7a and 7b shows the temperature sensor arrangement 17a of FIGS. 7a and 7b in the assembled state without the support structure 13.
- the locking arms pass through recesses provided on the circuit board 161a and thus bring about a mechanical connection to the circuit board 161a.
- the spring arm presses the sensor element 171a onto the top 23 of the energy storage cell 2a.
- the electrical connections 174a extend through the circuit board 161a through a slot-shaped recess 162a and are connected to the circuit board 161a, for example soldered via soldering surfaces.
- the housing molded element 172a When assembling the temperature sensor arrangement 17a, the housing molded element 172a can first be connected to the sensor board 161a. The sensor board 176a can then be pulled from the side opposite the housing molding element 172a through the slot-shaped recess 162a of the board 161a are inserted into the guide groove 179a of the housing molded element 172a. After the sensor board 176a is positioned in the guide groove 179a, the electrical connections 174a of the sensor board 176a can be connected to the board 161a. This makes handling easier. In addition, assembly can be automated.
- the temperature sensor arrangement 17a extends through the through opening 141 (see FIG. 4a) of the support structure 13 and can be positioned in the degassing channel 132 in this way.
- the support structure 13 causes thermal separation of the circuit board 161a from the sensor element 171a.
- the circuit board 161a remains intact even if the temperature sensor arrangement 17a is thermally destroyed and the defect in the temperature sensor arrangement 17a, 17b can still be detected by the control and/or regulation electronics 16.
- the steps 178c lie on the underside of the board 161a.
- the base 178a is intended to cover or close the through opening 141 of the support structure on its first side 137. A flow of gases through the through opening 141 is thus prevented or at least reduced.
- FIG. 8a and 8b show a perspective view and a sectional view of a further embodiment of a temperature sensor arrangement 17b.
- the temperature sensor arrangement 17b has a sensor element 171b and a housing shaped element 172b.
- the housing mold element 172b includes a base 178b with connecting means 175b and a step 178d, which have a corresponding structure and the same function as the base 178a, the connecting means 175a and the step 178c of the temperature sensor arrangement 17a according to FIGS. 7a and 7b.
- the housing molded element 172b of the temperature sensor arrangement 17b has a chamber 176b for positioning the sensor element 171b on.
- the chamber 176b is open on the side facing the board 161a, 161b, 161c. This allows the sensor element 171b to be pushed into the chamber 176b.
- the sensor element 171b can be a wired electronic component for through-hole technology (THT) with two electrical connections 174b.
- THT through-hole technology
- the contact element 173b On the side of the housing molded element 172b facing away from the electrical connections 174b there is a contact element 173b which at least partially encloses the sensor element 171a.
- the contact element 173b consists of an elastic, thermally conductive material. Furthermore, the contact element 173b is partially enclosed by the chamber 176b and rests on a shoulder in the chamber 176b.
- 9b shows the temperature sensor arrangement 17b from FIGS. 8a and 8b in the assembled state without the support structure 13.
- the temperature sensor arrangement 17b is mechanically connected to the circuit board 161b by a snap connection via the connecting means 175b.
- the circuit board 161b can, for example, have contact holes with contact rivets. Through these, the electrical connections 174b can be plugged in and soldered to the circuit board 162b from the side opposite the sensor element 171b.
- the contact element 173b which is covered by the housing shaped element 172b in FIG. 9b, is compressed or compressed. As a result, the sensor element 171b can be installed with a certain contact pressure on the top side 23 of the energy storage cell 2a.
- the temperature sensor arrangement 17b can be mounted as an assembled assembly on the circuit board 161b. By pressing the temperature sensor arrangements 17a, 17b, good thermal contact is ensured. In addition, for example, manufacturing tolerances, thermal expansions or relative movements of the components to one another can be compensated for.
- One of the two temperature sensor arrangements 17a, 17b or a combination of both can be provided in the cell contacting system 1.
- a circuit board can be a printed circuit board, i.e. H. a printed circuit board for carrying electronic components.
- 10a and 10b show a circuit board arrangement of the cell contacting system 1 in the form of the circuit board 161a with an additional circuit board 18a, on which there are sensor elements 181b and, in FIG. 10b, sensor elements 181a covered by contact elements 173c, such as. B. temperature sensor elements, gas sensor elements, humidity sensor elements or pressure sensor elements.
- 2 and 3 show the positioning of the circuit board arrangement according to FIGS. 10a and 10b on the energy storage cells 2a, 2b, 2z of the energy storage 3.
- FIGS. 10a and 10b show the positioning of the circuit board arrangement according to FIGS. 10a and 10b on the energy storage cells 2a, 2b, 2z of an energy storage device 3, with the support structure 13 omitted for reasons of illustration.
- sensors for different parameters e.g. B. for temperature, for gas, for pressure and / or for moisture, can be positioned along the surface of the energy storage 3.
- FIGS. 10a and 10b shows an enlarged section of an additional board 18a according to FIGS. 10a and 10b in the area of the spacer 19.
- 12b shows the contacting means 182a between circuit board 161a and additional circuit board 18a in an enlarged view.
- 12c shows an alternative embodiment of a circuit board 161c and an additional circuit board 18b with alternative contacting means 182b.
- the additional board 18a and the board 161a are spaced apart from one another as shown in FIGS. 10a and 10b, vertically offset from one another and electrically connected to one another via contacting means 182a.
- the contacting means 182a extend through a through opening 141 in the support structure 13 (see FIG. 3).
- the additional board 18a can be positioned on the side 137 of the support structure 13 facing the energy storage within the degassing channel 132. This results in a thermal separation of the additional circuit board 18a from the circuit board 161a through the wall 139 and/or the protective layer 133 of the carrier structure 13.
- the additional board 18a in FIGS. 10a, 10b is designed in the form of a plate and is mechanically connected to the support structure 13 via spacers 19. 12a, the spacers 19 each have connecting means 191 on the side facing the additional board 18a and on the side facing the support structure 13.
- the connecting elements 191 can be designed as a snap connection with two locking arms.
- the locking arms are resilient elements that can each reach through the additional board 18a and the support structure 13 in order to bring about a mechanical connection with the additional board 18a and the support structure 13.
- the additional board 18a can have recesses 184 and the support structure 13 can have recesses 142 (see FIG. 2) into which the connecting elements 191 can engage.
- Sensor elements 181a, 181b are provided on the additional board 18a, which are electrically connected to the board 161a via conductor tracks (not shown) and via the contacting means 182a, 181b.
- the sensor elements 181a, 181b can, for example, be SMD components that are soldered to the additional circuit board 18a on soldering surfaces. According to Fig. 10a, the sensor element 181b is located on the side of the additional board 18a facing the board 161a.
- the sensor element 181 b can, for example, be a sensor element that measures an environmental parameter, e.g. B. a temperature sensor element, a gas sensor element, a humidity sensor element or a pressure sensor element.
- the sensor element 181b is not in direct contact with an energy storage cell in the assembled state of the cell contacting system 1. As a result, for example, a gas temperature, a gas composition, a humidity or a pressure in the degassing channel 132 can be measured with the sensor element 181b.
- the sensor element 181b can also be an electronic component that can detect a plurality of environmental parameters.
- the sensor element 181a is located on the side of the additional board 18a facing away from the board or on the side facing the energy storage cells.
- the sensor element 181a can, for example, be a temperature sensor element, e.g. B. a Pt-100 resistor designed as an SMD component.
- the contact element 173c consists of a thermally conductive, elastic material. When assembling the cell contacting system 1 on the energy storage cells of the energy storage 3, the contact element 173c can be compressed or compressed.
- the sensor element 181a can be pressed onto the top side 23 of the energy storage cell with a certain contact force.
- the sensor elements 181a can advantageously be located in the area of the spacers 19. By pressing the sensor element 181a, thermal contact is ensured. In addition, for example, manufacturing tolerances, thermal expansions or relative movements of the components to one another can be compensated for.
- the contacting means 182a, 182b are projecting conductor webs 183a, 183b, which can be soldered, for example, to soldering surfaces on the additional circuit board 18a, 18b.
- the circuit board 161a has through openings for the contacting means 182a and a contacting strip 163a.
- the contact strip 163a can be soldered to the circuit board 161a.
- the conductor bars 183a can be plugged into the contact strip 163a.
- the contact strip 163a can have spring contacts, for example.
- the additional board 18b is designed differently than the additional board 18a in the area of the contacting means 182b.
- 13a and 13b show cell connectors 11a, 11b for electrically contacting the pole contacts 22a, 22b of the energy storage cells 2a, 2a, 2z.
- two terminal cell connectors 11b and thirteen cell connectors 11a are shown.
- the cell connectors 11a are intended to each have a pole contact 22a of an energy storage cell, e.g. B. 2a, with a pole contact 22b from an adjacent energy storage cell, e.g. B. 2b, to be electrically connected to one another.
- the cell connectors 11a have a base body 110 with a first contact surface 112a and a second contact surface 112b, each of which is connected to a pole contact 22a, 22b, e.g. B. welded.
- the two cell connectors 11b are intended to provide a contacting means on the first energy storage cell 2a and the last energy storage cell 2z to an electrical consumer (not shown), e.g. B. to provide an electric motor of an electric vehicle, or to an adjacent energy storage device.
- the cell connectors 11b have a base body 113 with a contact surface 112a, which is connected to the pole contact 22b of the cathode of the first energy storage cell 2a or the pole contact 22a of the anode of the last energy storage cell 2z, e.g. B. welded.
- the base body 113 has a Current tap 110d.
- the current taps 110d of the two cell connectors 11b thus form the connections of the anode and cathode of the energy storage 3.
- the base body 110, 113 of the cell connector 11a, 11b consists of an electrically conductive flat material with a preferably constant layer thickness, e.g. B. a sheet of metal.
- the base body 110, 113 has a first side S1, ST and a second side S2, S2' and is in each case in the area of the second side S2, S2' in a partial area 110a overmolded with a temperature control structure 12 which enlarges the surface of the cell connector 11a, 11b .
- the temperature control structure 12 has, for example, a plurality of temperature control ribs 124a that run parallel to one another.
- the temperature control structure 12 is preferably a thermally conductive, electrically insulating material, in particular plastic.
- the temperature control structure 12 extends along the entire length L1 of the first side ST. In the cell connector 11b, the temperature control structure 12 only extends along the length L2 of the first side ST in the area of the contact surface 112a.
- a recess 114 can be provided between the contact surfaces 112a, 112b of the cell connector 11a. On the one hand, this recess shifts the current flow and the resulting heat into the partial area 110a encapsulated by the temperature control structure 12. On the other hand, the base body 110 therefore has a higher elasticity. Thermal expansions or relative movements of the adjacent energy storage cells 2a, 2b, 2z to one another can thereby be better compensated for.
- the base bodies 110, 113 of the cell connectors 11a, 11b can have recesses 115, in the form of z. B. have crescent-shaped through openings. These also increase the elasticity of the base bodies 110, 113. 14a to 14d show various configurations of the temperature control structure 12. Temperature control shaft structures 124b, temperature control knobs 124c, temperature control pins 124d or temperature control webs 124e can be provided as the temperature control structure.
- 15a, 15b, 16a, 16b, 17a, 17b show alternative embodiments of cell connectors 11a, in which an additional contact element 121a, 121b, 121c is provided, which is connected to the top 23 of the energy storage cell via a contact surface 122a, 122b, 122c is in direct contact. This allows the energy storage cells 2a, 2b, 2z to be tempered.
- the contact element 121a of the temperature control structure 12 of FIGS. 15a and 15b is molded around the end region of the base body 110 in such a way that its contact surface 122a rests on the surface of the energy storage cells 2a, 2b or the height of the pole contacts 22a, 22b, see Fig. 15a, 15b bridged.
- FIGS. 17a and 17b show two further alternative embodiments of cell connectors 11a with a contact element 121b, 121c, for example a contact plate.
- the contact element 121b is encapsulated by the temperature control structure 12 and has an offset 127a.
- the offset 127a can have essentially the same height as the pole contacts 22a, 22b with respect to the surface 23.
- the base body 110 and the contact element 121 b z. B. can be connected to one another on one level, with the result that the contact element 121b rests directly on the top of the energy storage cells.
- a gap 129a is provided between the base body 110 and the contact element 121b, so that the base body 110 and the contact element 121b are not in direct contact with one another.
- the base body 110 and the contact element 121b are connected to one another via the temperature control structure 12.
- the base body 110 and the contact element 121b, 121c can thus be electrically insulated from one another by means of an electrically non-conductive temperature control structure 12.
- the contact element 121b can be the same material as the base body 110.
- the variant of FIGS. 17a and 17b has an additional offset 127b between the two contact surfaces 112a, 112b.
- the contact element 121c extends to the degassing openings 21 and surrounds the pole contacts 22a, 22b of the energy storage cells 2a, 2b. Due to the additional offset 127b, the heat conduction between the contact element 121c and the temperature control structure 12 as well as the mechanical stability of the cell connector 11a can be additionally increased.
- the offset 127a, 127b can be achieved, for example, by two folds of a plate-shaped raw material, e.g. B. a sheet, as can be seen from Fig. 17b, in which the temperature control structure is omitted for illustrative reasons.
- the base body 110 and the contact elements 121b, 121c can advantageously be made from a common plate-shaped blank, for example cut or punched.
- Corresponding contact elements can also be provided for the terminal cell connectors 11b.
- the geometry of the contact element for a cell connector 11b can be easily adapted to the geometry of the cell connector 11b.
- the cell connectors 11a, 11b can have an interface to a temperature control channel 131 and can be connected to this, preferably in the area of the temperature control structure 12, for example welded or glued.
- the through openings 140 of the support structure 13 can be arranged laterally in the direction of the pole contacts and/or in the direction of the degassing channel and/or in the direction of the battery storage cells.
- the temperature control structure 12 of the cell connector can close the through openings 140 of the support structure 13.
- the temperature control structure 12 can isolate the base element 110, 113 and/or the contact element 121b, 121c from a temperature control fluid located in the temperature control channel 131.
- a fluid made of an electrically conductive liquid can be provided.
- the temperature control structure 12 can also isolate the base element 110, 113 and/or the contact element 121b, 121c from the support structure 13.
- the carrier element in this variant could be made of a metal, for example. B. aluminum or an aluminum alloy.
- the configurations of the cell connectors 11a, 11b can also be used without a temperature control channel 131.
- the ambient air can be used to control the temperature.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
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Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022114656.1A DE102022114656A1 (de) | 2022-06-10 | 2022-06-10 | Temperierungs- und Entgasungsanordnung für Energiespeicherzellen sowie Energiespeicher |
| DE202022103903.8U DE202022103903U1 (de) | 2022-06-10 | 2022-07-12 | Temperierungs- und Entgasungsanordnung für Energiespeicherzellen sowie Energiespeicher |
| PCT/EP2023/064794 WO2023237430A1 (de) | 2022-06-10 | 2023-06-02 | Temperierungs- und entgasungsanordnung für energiespeicherzellen sowie energiespeicher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4537416A1 true EP4537416A1 (de) | 2025-04-16 |
Family
ID=86710750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23729142.2A Withdrawn EP4537416A1 (de) | 2022-06-10 | 2023-06-02 | Temperierungs- und entgasungsanordnung für energiespeicherzellen sowie energiespeicher |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4537416A1 (de) |
| CN (1) | CN119256429A (de) |
| WO (1) | WO2023237430A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120545546B (zh) * | 2025-05-22 | 2025-11-28 | 惠州市天辰尚能科技有限公司 | 一种高安全性的新能源电池包 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007063178B4 (de) | 2007-12-20 | 2011-01-13 | Daimler Ag | Batterie mit Wärmeleitplatte zum Temperieren der Batterie |
| DE102009046385A1 (de) | 2009-11-04 | 2011-05-05 | SB LiMotive Company Ltd., Suwon | Batterie mit Entgasungssystem und Verfahren zum Abführen von Austretungen |
| US8895177B2 (en) * | 2010-11-18 | 2014-11-25 | Robert Bosch Gmbh | Modular battery pack systems for prismatic cells |
| DE102012219784A1 (de) | 2012-10-29 | 2014-04-30 | Lisa Dräxlmaier GmbH | Batteriemodul mit einem Gaskanal |
| US9761918B2 (en) * | 2015-09-10 | 2017-09-12 | Ford Global Technologies, Llc | Vehicle traction battery assembly |
| JP6540628B2 (ja) * | 2016-07-29 | 2019-07-10 | 株式会社デンソー | 電池パック |
| EP3316384B1 (de) | 2016-10-25 | 2019-02-20 | Samsung SDI Co., Ltd. | Batteriemodul mit einer befestigung für ein temperaturempfindliches element |
| DE102017218752B4 (de) * | 2017-10-20 | 2021-05-27 | Bayerische Motoren Werke Aktiengesellschaft | Abdeckeinrichtung für ein Batteriegehäuse einer Traktionsbatterie eines Kraftfahrzeugs, Batteriegehäuse, Traktionsbatterie sowie Kraftfahrzeug |
| CN117650327A (zh) * | 2018-07-31 | 2024-03-05 | 松下知识产权经营株式会社 | 电池模块 |
| US20200266506A1 (en) * | 2019-02-18 | 2020-08-20 | 3M Innovative Properties Company | Battery module and system |
-
2023
- 2023-06-02 EP EP23729142.2A patent/EP4537416A1/de not_active Withdrawn
- 2023-06-02 WO PCT/EP2023/064794 patent/WO2023237430A1/de not_active Ceased
- 2023-06-02 CN CN202380041983.0A patent/CN119256429A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023237430A1 (de) | 2023-12-14 |
| CN119256429A (zh) | 2025-01-03 |
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