WO2021001545A1 - Élément à accumulateur d'énergie électrique et boîtier - Google Patents

Élément à accumulateur d'énergie électrique et boîtier Download PDF

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Publication number
WO2021001545A1
WO2021001545A1 PCT/EP2020/068861 EP2020068861W WO2021001545A1 WO 2021001545 A1 WO2021001545 A1 WO 2021001545A1 EP 2020068861 W EP2020068861 W EP 2020068861W WO 2021001545 A1 WO2021001545 A1 WO 2021001545A1
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WO
WIPO (PCT)
Prior art keywords
cell
electrical
energy storage
cap
housing
Prior art date
Application number
PCT/EP2020/068861
Other languages
German (de)
English (en)
Inventor
Julian FISCHER
Original Assignee
F.E.R. Fischer Edelstahlrohre Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by F.E.R. Fischer Edelstahlrohre Gmbh filed Critical F.E.R. Fischer Edelstahlrohre Gmbh
Priority to EP20737140.2A priority Critical patent/EP3994758A1/fr
Publication of WO2021001545A1 publication Critical patent/WO2021001545A1/fr

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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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • H01M50/176—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/22—Electrodes
    • H01G11/26—Electrodes characterised by their structure, e.g. multi-layered, porosity or surface features
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/78—Cases; Housings; Encapsulations; Mountings
    • H01G11/82—Fixing or assembling a capacitive element in a housing, e.g. mounting electrodes, current collectors or terminals in containers or encapsulations
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/054—Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
    • 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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/615—Heating or keeping warm
    • 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
    • H01M10/643—Cylindrical 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
    • H01M10/64—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
    • H01M10/654—Means for temperature control structurally associated with the cells located inside the innermost case of the cells, e.g. mandrels, electrodes or electrolytes
    • 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
    • H01M10/6567—Liquids
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/148—Lids or covers characterised by their shape
    • H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/148—Lids or covers characterised by their shape
    • H01M50/152—Lids or covers characterised by their shape for cells having curved cross-section, e.g. round or elliptic
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • H01M50/179—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for cells having curved cross-section, e.g. round or elliptic
    • 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
    • H01M50/342—Non-re-sealable arrangements
    • 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
    • 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
    • H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
    • H01M50/51—Connection only in series
    • 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
    • H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
    • H01M50/512—Connection only in parallel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/78—Cases; Housings; Encapsulations; Mountings
    • 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
    • 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
    • H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
    • 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
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the invention relates to a cell with an electrical energy store and a hollow cylindrical housing.
  • the electrical energy store is arranged in the housing and the housing tightly encloses the electrical energy store.
  • the electrical energy store has a first energy storage pole and a second energy storage pole.
  • the housing has an outer jacket, an inner jacket, a first cap and a second cap.
  • the housing of the cell has the shape of a hollow cylinder.
  • a hollow cylinder is understood to mean a general hollow cylinder.
  • a general hollow cylinder is defined by an outer jacket surface, an inner jacket surface, a first base surface and a second base surface, the base surfaces closing off the areas between the inner jacket surface and the outer jacket surface.
  • a general hollow cylinder can not only be vertical but also oblique. It can also have not only base areas with circular or oval, but also with polygonal cross-sectional contours.
  • the hollow cylindrical housing can also be a prism.
  • the outer jacket forms the outer jacket surface
  • the inner jacket forms the inner jacket surface
  • the housing tightly encloses the electrical energy storage unit arranged in the housing.
  • tightly enclosed means on the one hand that the electrical energy storage device is protected against environmental influences so that its functionality is not impaired, and on the other hand that the electrical energy storage device does not pose any danger to the environment.
  • the two energy storage poles of the electrical energy store are also referred to as the positive pole and the negative pole.
  • One cell or several electrically interconnected cells are used to supply electrical devices with electrical energy.
  • the electrical devices are, for example, smartphones, laptops and automobiles.
  • Two cells are interconnected in such a way that they are electrically connected either in series or in parallel.
  • Generic cells known from practice are, for example, lithium-ion round cells.
  • Such a round cell has a vertical hollow cylinder-shaped housing with an inner jacket and an outer jacket, where the inner jacket and the outer jacket have circular cross-sectional contours.
  • the two caps are adapted to the inner jacket and the outer jacket.
  • the electrical energy store is arranged in the housing and is often wrapped around the inner jacket.
  • the first energy storage pole of the electrical energy store is electrically connected to the first cap and the second energy storage pole is electrically connected to the second cap.
  • the cells are therefore only electrically contacted via the two caps, one cap representing the negative pole and the other cap representing the positive pole.
  • Several generic cells can be electrically connected in series or in parallel.
  • first and a second cell these are preferably also arranged geometrically in series, so that the first cap of the first cell and the second cap of the second cell are opposite one another.
  • the first cap and the second cap are electrically connected to one another by a cell connector.
  • electrically parallel connection of a first and a second cell these are preferably also arranged geometrically parallel, so that the first cap of the first cell and the first cap of the second cell lie next to one another.
  • the first two caps are electrically connected to one another by a cell connector.
  • the type of electrical connection of cells thus influences their geometric arrangement and the orientation of the cells in this arrangement. This means a loss of symmetry and reduces the packing density of the cells.
  • the orientation of cells relates to the sequence of their caps in relation to one another, ie to the sequence of the plus and minus poles. This is a limitation that is a disadvantage.
  • the temperature of the electrical energy store in a cell must be in a predetermined temperature range so that the maximum possible performance of the electrical energy store is given and the maximum possible service life of the electrical energy store is achieved.
  • the electrical energy storage device when charging and discharging, the electrical energy storage device generates heat.
  • the current flowing during charging and discharging also has an effect Heat in the areas of the housing through which the current flows. These areas also include, in particular, the areas of electrical contacting of the housing, for example on the caps.
  • the ambient temperature of cells and the heat generated during charging and discharging in cells can cause the specified temperature range to be exceeded. If the temperature rises so far that it is outside the specified temperature range, there is a risk of thermal runaway. It is therefore necessary to control the temperature of the cells so that the temperature of the electrical energy storage device is in the specified temperature range. A lack of temperature control or a temperature control that does not keep the electrical energy storage device in the specified temperature range therefore represents a further disadvantage.
  • the object of the present invention is to overcome or at least alleviate the disadvantages set out.
  • the object is achieved by a cell with the features of claim 1.
  • the inner jacket and the first cap form a first electrical cell conductor and, on the other hand, the outer jacket and the second cap form a second electrical cell conductor.
  • the first electrical cell conductor and the second electrical cell conductor are electrically insulated from one another.
  • the first energy storage pole and the inner jacket and on the other hand the second energy storage pole and the outer jacket are electrically connected to one another.
  • the inner jacket has, on the one hand, a first socket on the first cap and, on the other hand, a second socket for plugs of a cell connector on the second cap.
  • the sockets are of different sizes in order to avoid polarity reversal.
  • the housing is designed such that a medium for temperature control of the cell can be accommodated in the inner jacket.
  • the hollow cylindrical shape of the housing in connection with the assignment of the elements of the housing, namely the outer jacket, the inner jacket, the first cap and the second cap, to the first electrical cell conductor and the second electrical cell conductor and the electrical connection of the mecanicman means to the first energy storage pole and the Connection of the outer jacket to the second energy storage pole enables both an electrical series connection and an electrical parallel connection of two geometrically arranged cells in series, regardless of their orientation.
  • the orientation of the cells relates to the sequence of their caps to one another in the geometrically serial arrangement, that is to the sequence of first and second caps.
  • the serial cell connector has a first connector, a second connector, and a collar.
  • the first plug is designed to be complementary to one of the sockets, and the second plug to be complementary to the other socket, so that the two cells are geometrically arranged relative to one another by the serial cell connector.
  • the first plug is for electrical contacting of the socket and thus the first electrical cell conductor and the collar is designed for electrical contacting of the outer jacket and there with the second electrical cell conductor.
  • the first connector and the collar are electrically connected to one another.
  • the first electrical cell conductor of one cell and the second electrical cell conductor of the other cell are electrically connected to one another by the series cell connector.
  • the described configuration of the serial cell connector enables two cells to be electrically connected in series regardless of their orientation to one another.
  • the parallel cell connector has a first connector, a second connector and a ring.
  • the first plug is complementary to one of the two sockets and the second plug is complementary to the other socket, so that the two cells are geometrically arranged with respect to one another by the parallel cell connector.
  • both the first plug and the second plug are designed for making electrical contact with the sockets.
  • the ring is designed for making electrical contact with the outer sheaths of the two cells.
  • the configuration of the parallel cell connector described enables two cells to be electrically connected in parallel regardless of their geometric orientation to one another.
  • the housing and thus the inner jacket are designed to accommodate a medium for controlling the temperature of the cell. If a medium is accommodated in the inner jacket, it is used to supply or remove heat so that the electrical energy store is in the specified temperature range.
  • the electrical energy storage device is arranged directly on the inner jacket. As a result, the thermal resistance between the electrical energy store and the inner jacket is low and efficient temperature control is possible.
  • the outer jacket and also the caps are preferably arranged on the energy store so that the thermal resistance is as low as possible.
  • the housing of the cell is also characterized by its simplicity. Because the components of the housing, namely the outer jacket, the inner jacket, the first cap and the second cap, are easy to manufacture and assemble. This reduces manufacturing effort and manufacturing costs.
  • the energy store in the cell is usually layered, for example by folding it in itself or by wrapping it around the inner jacket.
  • the energy storage device thus has layers.
  • the energy storage device resembles a coil. Consequently, the energy store also has a corresponding inductance, which affects transient changes in a current through the energy store.
  • the first energy storage pole and the first cap and on the other hand the second energy storage pole and the second cap are electrically connected to one another.
  • the inner jacket and the first cap and on the other hand the first energy storage pole are electrically connected and on the other hand the outer jacket and the second cap and on the other hand the second energy storage pole are electrically connected.
  • the electrical connection between the first energy storage pole and the first cap is such that the first energy storage pole, preferably at each layer of the energy storage device, and the first cap are electrically connected to one another.
  • the electrical connection between the second energy storage pole and the second cap is such that the second energy storage pole, preferably at each layer of the energy storage device, and the second cap are electrically connected to one another.
  • the housing is designed in such a way that a medium for temperature control of the cell can flow through the inner jacket.
  • This medium is preferably a liquid medium.
  • a liquid medium is characterized in that, on the one hand, it has a high heat capacity and, on the other hand, it is in direct contact with the inner jacket, so that the thermal resistance between the medium and the inner deficiency is low.
  • One advantage of a liquid medium over a solid medium is that the heat supplied to or removed from the electrical energy storage device is not only transported by the thermal conductivity of the medium, but also by the movement of the flowing medium.
  • the first socket and the second socket in the inner jacket of the housing are designed to accommodate plugs of cell connectors.
  • the first socket and / or the second socket are or is designed for plugging, screwing, gluing, soldering, welding, squeezing or pressing a plug of a cell connector.
  • screwing and plugging in compared to gluing, soldering, welding, squeezing and pressing is that these connections are easier to separate.
  • gluing, soldering, welding, squeezing and pressing compared to plugging and screwing is that the connections usually have a lower electrical resistance.
  • the housing of the cell can accommodate a wide variety of electrical energy storage devices.
  • the electrical energy store is a lithium-ion, sodium-ion, manganese-ion, magnesium-ion or lithium-sulfur energy store.
  • the electrical energy store can also be a capacitor such.
  • a super capacitor is e.g. B. a double layer capacitor, pseudo capacitor or hybrid capacitor.
  • the housing with outer jacket, inner jacket, first cap and second cap pe can have a wide variety of hollow cylindrical geometries.
  • the inner jacket has a circular transverse Has cutting contour.
  • the outer jacket has a circular cross-sectional contour.
  • the outer jacket has a polygonal cross-sectional contour.
  • the first electrical cell conductor is in one piece and is made from a single piece.
  • the second electrical cell conductor is in one piece and is made from a single piece.
  • the housing preferably the outer jacket, has a predetermined breaking point, so that the housing breaks at the predetermined breaking point when the energy store exerts a predetermined force on the predetermined breaking point.
  • the energy store then exerts such a force on the predetermined breaking point, for example, when it goes through thermally, for example as a result of electrical overload.
  • an electrical connection always means an electrically conductive connection and an electrical contact means an electrically conductive contact.
  • Fig. La, lb a first embodiment of a cell
  • FIG. 3 shows an electrical series connection of two cells according to the first embodiment through an embodiment of a series cell connector
  • FIG. La shows a first exemplary embodiment of a cell 1 in a perspective view
  • FIG. Lb shows a longitudinal section of the exemplary embodiment.
  • the cell has an electrical energy store 2 and a vertical hollow cylinder-shaped housing 3.
  • the housing 3 has an outer casing 4, an inner casing 5, a first cap 6 and a second cap 7. Both the outer jacket 4 and the inner jacket 5 each have a circular cross-sectional contour.
  • a first electrical cell conductor 8 is formed by the inner jacket 5 and the first cap 6 and a second electrical cell conductor 9 is formed by the outer jacket 4 and the second cap 7. Both the first electrical cell conductor 8 and the second electrical cell conductor 9 are each made in one piece from a single piece and are electrically conductive. The first electrical cell conductor 8 and the second electrical cell conductor 9 are electrically isolated from one another.
  • first cell conductor 8 and the second cell conductor 9 simplifies the production of the cell 1, which also reduces the production costs.
  • association between the first cap 6 and the inner jacket 5 and the second cap 7 with the outer jacket 4 simplifies the joining of the first cell conductor 8 and the second cell conductor 9 to the insertion of the first cell conductor 8 into the second cell conductor 9 .
  • a further simplification is given by the fact that the electrical energy store 2 is wound onto the inner jacket 5.
  • the inner jacket 5 is preferably used as a winding mandrel for winding up the electrical energy store 2.
  • Individual energy storage layers 20 of the energy store are shown by way of example in the lower half of FIG.
  • the inner jacket 5 has a first socket 10 on the one hand, ie at the level of the first cap 6, and on the other hand, ie at the level of the second cap 7, a second socket 11 for plugs of a cell connector.
  • the first socket 10 and the second socket 11 are identical and designed for plugging in the plug of a cell connector.
  • the electrical energy store 2 is a lithium-ion energy store and has a first energy storage pole 12 and a second energy storage pole 13.
  • the electrical energy store 2 is arranged in the housing 3.
  • first energy storage pole 12 and the first electrical cell conductor 8 and, on the other hand, the second energy storage pole 13 and the second electrical cell conductor 9 are electrically connected to one another. Accordingly, on the one hand the inner jacket 5 and the first cap 6 and on the other hand the first energy storage pole 12 are electrically connected and on the other hand the outer jacket 4 and the second cap 7 and on the other hand the second energy storage pole 13 are electrically connected.
  • the electrical connection between the first energy storage pole 12 and the first cap 6 is such that the first energy storage pole 12 on each energy storage layer 20 of the electrical energy store 2 and the first cap 6 are electrically connected to one another.
  • An electrical connection to the cell 1 can thus be established via the first cell conductor 8, that is to say the first cap 6 and the inner jacket 5, and via the second cell conductor 9, that is to the outer jacket 4 and the second cap 7. It should be noted that the first socket 10 and the second socket 11 belong to the inner jacket 5.
  • the temperature of the electrical energy store 2 in the cell 1 must be in a predetermined temperature range so that the maximum possible performance of the electrical energy store 2 is given and its maximum possible service life is achieved.
  • the ambient temperature of the cell 1 and the heat generated during the charging and discharging of the electrical energy storage device 2 in the electrical energy storage device 2 can cause the specified temperature range to be left. Consequently, it is necessary to control the temperature of the cell 1 so that the temperature of the electrical energy store 2 is in the specified temperature range.
  • the housing 3 is therefore designed in such a way that a liquid medium for controlling the temperature of the cell 1 can flow through the inner jacket 7.
  • a liquid medium is characterized by the fact that on the one hand it has a high heat capacity and on the other hand it is in direct contact with the inner sleeve. tel 5, so that the thermal resistance between the medium and réelleman gel 5 is low.
  • the housing 3 also tightly encloses the electrical energy store 2. Tightly enclosed means on the one hand that the electrical energy store 2 is protected against environmental influences so that its functionality is not impaired, and on the other hand that the electrical energy store 2 does not pose any danger to the environment.
  • the tight order also relates to the medium, so that the medium does not get into the housing 3.
  • Fig. 2 shows a second embodiment of a cell 1 in a perspective view.
  • the second exemplary embodiment differs from the first exemplary embodiment exclusively in that the outer jacket 4 does not have a circular, but a rectangular cross-sectional contour. Otherwise, the explanations relating to the first exemplary embodiment apply accordingly to the second exemplary embodiment.
  • Fig. 3 shows a longitudinal section of an electrical series connection of two cells 1 according to the first embodiment through awhosbei game of a series cell connector 14.
  • the two cells 1 are geometrically arranged serially.
  • Fig. 4a shows the serial cell connector 14 from Fig. 3 separately in a perspective view.
  • 4b shows the components of the serial cell connector 14 pulled apart along its longitudinal axis.
  • 4c shows a longitudinal section of the serial cell connector 14. It has a first connector 15, a second connector 16 and a collar 17.
  • the first plug 15 and the second plug 16 are complementary to the first socket 10 and second socket 11 and are therefore also the same.
  • the two cells 1 are geometrically angeord net to each other as shown in FIG.
  • the first plug 15 is designed to make electrical contact with the first socket 10 and thus the first electrical cell conductor 8, and the collar 17 is designed for electrically contacting the outer jacket 4 and thus the second electrical cell conductor 9.
  • the first plug 15 and the collar 17 are electrically connected to one another.
  • the series cell connector 14 the first electrical cell conductor 8 of one cell 1 and the second electrical cell conductor 9 of the other cell 1 are electrically connected to one another.
  • the configuration of the se- rienzellverbinders 14 enables an electrical series connection of two cells 1 regardless of their orientation to each other. Independence from the orientation means that the electrical series connection is retained even if the orientation of one or both cells 1 is reversed. If the orientation of one of the two cells is reversed, then the first socket 10 and the second socket 11 are exchanged.
  • FIG. 5 shows a longitudinal section of an electrical parallel connection of two cells 1 according to the first exemplary embodiment through an exemplary embodiment of a parallel cell connector 18.
  • the two cells 1 are geometrically arranged in series.
  • Fig. 6a shows the parallel cell connector 18 from FIG. 5 separately in a perspective view.
  • Fig. 6b shows the components of the parallel cell connector 18 pulled apart along its longitudinal axis.
  • 6c shows a longitudinal section of the parallel cell connector 18. It has a first connector 15, a second connector 16 and a ring 19.
  • the first plug 15 and the second plug 16 are complementary to the first socket 10 and second socket 11 and are therefore also the same.
  • the two cells 1 are geometrically angeord net to each other as shown in FIG.
  • both the first plug 15 and the second plug 16 are designed for electrical contacting of the first socket 10 and the second socket 11.
  • the ring 19 is designed to make electrical contact with the outer sheaths 4 of the two cells 1.
  • the parallel cell connector 18 on the one hand the first electrical-specific cell conductor 8 of one cell 1 and the first electrical cell conductor 8 of the other cell 1 and on the other hand the second electrical cell conductor 9 of one cell 1 and the second electrical cell conductor 9 of the other cell 1 electrically connected to each other.
  • the configuration of the Parallelzellver connector 18 described allows two cells 1 to be electrically connected in parallel, regardless of their geometric orientation to one another.
  • the hollow cylindrical shape of the housing 3 in conjunction with the assignment of the outer jacket 4, the inner jacket 5, the first cap 6 and the second cap 7 to the first electrical cell conductor 8 and second electrical cell conductor 9 and the electrical connection of the first electrical cell conductor 8 with the first energy storage pole 12 and the connection of the second electrical cell conductor 9 to the second energy storage pole 13 both an electrical series circuit and an electrical parallel circuit of two geometrically serially arranged cells 1 regardless of their geometrical orientation.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Materials Engineering (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

L'invention concerne un élément (1) doté d'un accumulateur d'énergie (2) électrique et d'un boîtier (3) cylindrique creux, ledit accumulateur d'énergie (2) électrique étant disposé dans le boîtier (3) et ledit boîtier (3) entourant l'accumulateur d'énergie (2) électrique de manière étanche, l'accumulateur d'énergie (2) électrique présentant un premier pôle d'accumulateur d'énergie (12) et un second pôle d'accumulateur d'énergie (13), et le boîtier (3) présentant une enveloppe extérieure (4), une enveloppe intérieure (5), un premier capuchon (6) et un second capuchon (7). L'invention vise à fournir une thermorégulation de l'élément (1), laquelle maintient l'accumulateur d'énergie (2) électrique dans une plage de températures prédéfinie. A cet effet, d'une part l'enveloppe intérieure (5) et le premier capuchon (6) constituent un premier conducteur d'élément (8) électrique et d'autre part l'enveloppe extérieure (4) et le second capuchon (7) constituent un second conducteur d'élément (9) électrique, le premier pôle d'accumulateur d'énergie (12) et l'enveloppe intérieure (5) d'une part et le second pôle d'accumulateur d'énergie (13) et l'enveloppe extérieure (4) d'autre part sont interconnectés électriquement, l'enveloppe intérieure (5) présente d'une part sur le premier capuchon (6) une première douille (10) et d'autre part sur le second capuchon (7) une seconde douille (11) pour des fiches (15, 16) d'un cavalier (14, 18), et le boîtier (3) est conçu de sorte qu'un milieu destiné à la thermorégulation de l'élément (1) peut être reçu dans l'enveloppe intérieure (5).
PCT/EP2020/068861 2019-07-04 2020-07-03 Élément à accumulateur d'énergie électrique et boîtier WO2021001545A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20737140.2A EP3994758A1 (fr) 2019-07-04 2020-07-03 Élément à accumulateur d'énergie électrique et boîtier

Applications Claiming Priority (2)

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DE102019118160.7A DE102019118160A1 (de) 2019-07-04 2019-07-04 Zelle mit elektrischem Energiespeicher und Gehäuse
DE102019118160.7 2019-07-04

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WO2021001545A1 true WO2021001545A1 (fr) 2021-01-07

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Publication number Priority date Publication date Assignee Title
DE102022106656A1 (de) 2022-03-22 2023-09-28 Bayerische Motoren Werke Aktiengesellschaft Elektrochemischer Energiespeicher, elektrochemische Rundzelle und Verfahren zur Herstellung einer elektrochemischen Rundzelle

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005041746A1 (de) * 2005-09-02 2007-03-08 Bayerische Motoren Werke Ag Elektrochemische Energiespeicherzelle
DE102012018040A1 (de) * 2012-09-13 2014-03-13 Daimler Ag Einzelzelle für eine elektrochemische Batterie, elektrochemische Batterie und Verfahren zum Betrieb einer Einzelzelle für eine elektrochemische Batterie
US20150171462A1 (en) * 2012-07-06 2015-06-18 Orange Power Ltd. Electrode assembly, battery comprising same, and method for manufacturing same
US20170229745A1 (en) * 2014-08-21 2017-08-10 Lg Chem, Ltd. Battery cell having improved cooling performance
EP3705344A1 (fr) * 2019-03-04 2020-09-09 Friedrich Grimm Cellule d'accumulateur en tant que cellule cylindrique et en tant qu'échangeur de chaleur

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3075477B1 (fr) * 2017-12-14 2021-07-30 Commissariat Energie Atomique Traversee formant borne pour accumulateur electrochimique metal-ion, accumulateur associe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005041746A1 (de) * 2005-09-02 2007-03-08 Bayerische Motoren Werke Ag Elektrochemische Energiespeicherzelle
US20150171462A1 (en) * 2012-07-06 2015-06-18 Orange Power Ltd. Electrode assembly, battery comprising same, and method for manufacturing same
DE102012018040A1 (de) * 2012-09-13 2014-03-13 Daimler Ag Einzelzelle für eine elektrochemische Batterie, elektrochemische Batterie und Verfahren zum Betrieb einer Einzelzelle für eine elektrochemische Batterie
US20170229745A1 (en) * 2014-08-21 2017-08-10 Lg Chem, Ltd. Battery cell having improved cooling performance
EP3705344A1 (fr) * 2019-03-04 2020-09-09 Friedrich Grimm Cellule d'accumulateur en tant que cellule cylindrique et en tant qu'échangeur de chaleur

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EP3994758A1 (fr) 2022-05-11

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