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
  • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
  • H01M10/44—Methods for charging or discharging
• • 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
  • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
  • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
• • 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
  • H01M2200/00—Safety devices for primary or secondary 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
  • 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 to a cell cover for a battery cell according to the first independent claim and to a battery cell,
• Safety valve and a pressure compensation valve in the cell cover are arranged.
• Battery cell in particular prismatic battery cell, claimed for closing an opening of a cell housing of the battery cell, wherein at least two cell terminals can be arranged on the cell cover.
• a rapid discharge unit is provided, which is connectable at least electrically conductively to at least one cell terminal of the battery cell and is integrated in the cell cover (at least mechanically). The cell terminals serve as electrical
• a cell terminal is in each case with the
• Terminal lugs of the anodes or cathodes of the battery cell electrically conductively contacted and / or connected.
• the terminal lugs can be electrically connected to the cell terminal.
• the quick-charging unit serves to discharge the battery cell in the shortest possible time via the fast-charging unit, so that a short circuit or a discharge via an external component can be prevented.
• the fast discharge unit can be electrically and / or thermally connected to at least one cell terminal of the battery cell.
• the fast discharge unit can be arranged between the at least two cell terminals on the cell lid of the battery cell, in particular in the cell lid (at least mechanically or electrically conductive) integrated.
• the integration of the quick-charging unit in the cell cover allows the shortest possible current and thus resistance paths from the cathode or anode to fast-charging unit. Thus, if necessary, reliable discharge via the quick-discharge unit is possible.
• a material recess may be formed in the cell lid, wherein the fast discharge unit is arranged in a form-fitting manner in the material recess.
• the material recess may be formed as an embossing.
• the embossing can be a material deformation of the
• Cell cover be, wherein preferably the material recess is embossed in such a way in the cell cover, that the fast discharge unit is at least partially positively and / or non-positively arranged therein.
• the material recess in the case of the cell cover are made falling or machined, such. B. by punching or milling.
• Material recess can in contrast to an embossed or
• the material recess is made possible by material removal.
• the material recess may be formed as a hole in the cell lid, wherein such a material recess is preferably dimensioned such that the fast discharge unit can be held at least partially non-positively and / or positively in the material recess.
• the material recess is formed geometrically complementary to the fast discharge unit.
• the cell cover can serve as a cooling element for the quick-discharge unit, so that, if required, when the battery cell is discharged via the quick-charging unit, the quick-charging unit is cooled.
• a seal is arranged between the fast-charging unit and the cell lid.
• the fast discharge unit is sealingly inserted in the receptacle.
• the seal may be, for example, glued and / or welded in the material recess and / or arranged on the quick-discharge unit.
• the seal can serve on the one hand as electrical and / or thermal insulation.
• a seal according to the invention can prevent the penetration of environmental influences, for example water and / or dust, into the battery cell.
• the seal may be formed, for example, of plastic and / or silicone and / or ceramic and / or glass.
• the seal may additionally or even prevent electrolyte leakage from the cell.
• the seal may additionally or even prevent electrolyte leakage from the cell.
• the seal may additionally or even prevent electrolyte leakage from the cell.
• the seal may additionally or even prevent electrolyte leakage from the cell.
• the seal may additionally or even prevent electrolyte leakage from the cell.
• the seal
• the seal may be arranged in a form-fitting manner in a receptacle on the quick-loading unit and / or the material recess of the cell lid.
• the material recess and / or the seal may be arranged in a form-fitting manner in a receptacle on the quick-loading unit and / or the material recess of the cell lid.
• Fast discharge unit is formed a contour in which the seal at least partially positively arranged, for example, injected, can be.
• Terminal receptacle in the cell cover in particular form-fitting, be arranged, wherein the terminal receptacle is formed as a filling opening and fluid-tight manner by means of a cell terminal. At least one terminal receptacle may be formed in the cell cover as at least partially.
• Terminal recording can thus in the cell lid tool falling or cutting, such. B. milled, drilled or punched.
• a cell terminal is arranged in each case a terminal receptacle and preferably held therein positively.
• the cell terminal can be electrically conductively connected during or after placement in the terminal receptacle with the anode and / or cathode.
• Terminal receptacle according to the invention may also be formed only as a transformed cell lid section, so that the cell terminal in the
• Terminal recording at least partially in form and / or
• Cell terminal is joined in the terminal receptacle, so that an electrically conductive connection between the cell terminal, the terminal receptacle, in particular the cell cover can be produced.
• the terminal receptacle is designed as a filling opening. After filling the battery cell, the cell terminal can be arranged in the terminal receptacle and become and thus close the battery cell fluid-tight.
• the cell terminal has an electrical and / or fluid-tight seal which can be arranged between the cell lid and cell terminal in the region of the terminal receptacle.
• a conductive metal alloy with or without a coating or coating (eg, for electrical insulation of the surface) is conceivable. This can also be a light metal such.
• B. in the form of aluminum are used, which is not only good electrical conductivity, but also has a good thermal conductivity for cooling the fast-charging unit.
• the battery cell in this case has a cell housing which has an opening at least on one side and can be closed with a cell lid.
• the cell cover has at least two terminals arranged at a distance from each other.
• a rapid discharge unit for the battery cell is provided, which is at least electrically, in particular thermally, conductively connected to at least one cell terminal and integrated into the cell lid.
• the cell lid is formed according to the first aspect of the invention. The arrangement of the fast-charging unit in or directly on the cell lid and the thus integrative embodiment of the fast-charging unit with the cell lid allows the shortest possible current or resistance path for the
• the battery cell can be reliably discharged via the fast-charging unit.
• the cell lid is designed in accordance with the first aspect of the invention, then all the advantages that have already been mentioned in connection with the cell lid according to the invention result for the battery cell.
• the cell terminals of the battery cell each one
• each cell terminal in each case has a connection section which extends at least in sections into the cell housing such that the termination section can be connected to the connection lugs of the anode and / or cathode.
• connection section extends from the cell lid into the cell housing of the battery cell. It is conceivable that the
• connection section is formed from the cell cover of the battery cell at least in sections.
• the terminal portion may be formed from a part of the cell lid. It may be advantageous if the connection section is formed by forming a section of the cell cover. Thus, no additional material is required, which must be connected to the cell lid. Accordingly, there are no further contact resistances between terminal section and anode or cathode of the battery cell.
• connection portion of at least one cell terminal is formed integrally with the lid.
• connection section can be Z-shaped, rectangular or solid.
• the cell cover extends at least in sections in the region of the opening into the cell housing.
• an outer contour of the cell lid may be geometric
• the cell lid is designed such that it at least
• the battery cell can be closed by the cell lid so that the cell interior of the battery cell is protected from external influences.
• the cell lid can be joined to the cell housing with a material fit.
• an outer contour of the cell lid is formed geometrically complementary with an inner contour of the opening of the cell housing.
• the outer contour of the cell lid thus forms a portion of the outer contour of the battery cell, wherein the cell cover in the opening of the
• Cell housing is arranged. It is conceivable that the cell lid is formed such that a first portion of the cell lid into the opening of the Cell housing extends and a second portion of the cell lid with the outer contour of the cell housing form-fitting manner. Thus, edges and / or corners on the cell housing or transition from cell housing to cell cover can be largely prevented. It is thus simplified that the cell lid can be joined to the cell housing in a material-locking manner in the region of the opening of the cell housing.
• the cell cover is formed in several parts and has at least one upper part and a lower part, wherein in particular the upper part and the lower part are joined together by means of clinching, welding, soldering or gluing together.
• the upper part of the cell cover can be dimensioned on its outer circumference such that the upper part has the same circumference as the cell housing. Accordingly, a positive connection of the upper part of the cell lid with the cell housing results.
• the lower part is preferably geometrically formed such that the lower part is geometrically complementary to an inner contour of the opening of the cell housing.
• the upper part and the lower part of the cell cover are preferably joined together electrically and / or thermally by means of clinching, welding, in particular laser welding, soldering or gluing.
• the upper part and / or the lower part has a material thickness of between about 0.25 mm and about 10 mm, preferably between about 1.5 mm and about 7 mm, particularly preferably between about 2 mm and about 5 mm. It may be advantageous if at least one valve is provided, wherein the
• valve on the cell housing or a cell lid opposite, in particular diametrically opposite, arranged bottom of the battery cell is arranged.
• the valve may be formed, for example, as a pressure and / or degassing, so that when degassing the battery cell chemistry, an internal pressure of the
• Battery cell can be compensated so that deformation of the battery cell, in particular the cell housing of the battery cell, at least can be limited.
• the valve is spaced from the cell housing to the cell cover, in particular arranged at the bottom of the battery cell. If necessary, it is thus possible that the rapid discharge unit can discharge the battery cell and at the same time a degassing via the valve of the battery cell is made possible without that the escaping gas from the battery cell is ignited by the fast discharge unit.
• FIG. 2 shows another possible embodiment of an inventive
• Fig. 3 shows another possible embodiment of an inventive
• Fig. 4 shows another possible embodiment of an inventive
• Fig. 5 shows another possible embodiment of an inventive
• 6a shows a possible embodiment of an upper part of a
• 6b shows a possible embodiment of a lower part of a
• 6c shows a possible embodiment of a cell lid according to the invention
• FIG. 6d shows the embodiment of the cell cover according to the invention from FIG. 6c from a different perspective
• FIG. 7a shows a possible multi-part embodiment of a cell lid according to the invention
• Fig. 7b shows a possible embodiment of an upper part of a
• Fig. 7c shows a possible embodiment of a lower part of a
• the battery cell 20 has a cell housing 11 with an opening 11.1, wherein in the opening 11.1 of the cell housing 11 a possible embodiment of a cell cover 10 according to the invention is arranged.
• the cell cover 10 in this case has a material recess 10.1, wherein in the material recess 10.1 a fast discharge unit 13 is arranged.
• Each side of the two broad sides of the fast discharge unit 13, a cell terminal 12 are arranged, wherein the cell terminals 12 are each electrically connected via a connection portion 12.1 with terminal lugs of the anode or cathode.
• the connection sections 12.1 are both essentially Z-shaped and can, for example, copper and / or Have aluminum.
• the terminal sections 12.1 are respectively connected to the anodes or cathodes of the battery cell on the one hand and the other with the
• Fast discharge unit 13 is electrically connected to the first cell terminal 12 via the busbar 12.2.
• a seal 13.1 is arranged on the peripheral side of the fast discharge unit 13 and in the contact area to the material recess 10.1 of the cell lid 10.
• the material recess 10.1 is formed in FIG. 1 as a material opening in the cell lid 10, the quick-loading unit 13 being arranged in a form-fitting manner therein at least in sections and sealingly closing the cell lid 10 in the area of the material recess 10.1 via the seal 13.1.
• the busbar 12.2 is preferably electrically connected to the cell terminal 12. For example. can the busbar 12.2 with the
• Terminal mount 14 laser welded, soldered or glued electrically conductive.
• Terminal recording 12 which with the bus bar 12.2 with the
• Fast discharge unit 13 is connected between cell terminal 12 and cell lid
• a terminal seal 14.1 is arranged, whereby the cell terminal 12 is electrically isolated and / or protected against external influences with the cell cover 10 is closed.
• the cell lid 10 is arranged in FIG. 1 at least in sections in a form-fitting manner with an inner contour 11.6 of the cell housing 11 in the region of the opening 11.1.
• a valve 15 can be arranged on the cell housing 11 on a broad side of the cell housing 11.
• Cell terminal 12 is electrically connected to the cell cover 10, preferably joined.
• FIG. 2 shows a further possible embodiment of a
• the first cell terminal 12 is formed at right angles, so that the connection portion 12.1 of the cell terminal 12 does not extend as shown in Figure 1 Z-shaped.
• Connection section 12.1 of the cell terminal 12 in this case have a right angle to each other.
• the current / resistance path generated thereby between quick charger unit 13 and anode or cathode is kept as short as possible, so that a contact resistance is minimized.
• a reliable discharge of the battery cell 20 via the fast charging unit 13 allows.
• FIG. 3 shows a further possible embodiment of a
• Cell terminals 12 are formed at right angles.
• FIG. 3 shows a further embodiment of a battery cell 20 according to the invention with one possible embodiment of a device according to the invention
• the cell lid 10 is in this case formed in one piece and has a material recess 10.1, which is partially formed from the cell cover 10.
• the material recess 10.1 by forming the
• Material recess 10.1 is so geometrically formed from the cell cover 10 that the fast discharge unit 13 is at least partially held in a form-fitting manner in the material recess 10.1.
• a first cell terminal 12 is disposed on the cell lid 10 and electrically connected to the cell lid 10. Inside the cell housing 11, the first extends
• the second cell terminal 12 is arranged in a terminal receptacle 14 in the cell lid 10. Between the second cell terminal 12 and terminal receptacle 14, a terminal seal 14.1 is arranged, so that the second cell terminal 12 is formed electrically insulating with respect to the cell lid 10.
• a bus bar 12.2 is arranged to be electrically conductive and connected to the fast discharge unit 13.
• a seal 13.1 is arranged, so that the fast discharge unit 13 is formed electrically insulating with respect to the cell lid 10 and the cell interior is sealed against external influences.
• Both connection sections 12.1 of the two cell terminals 12 are formed at right angles to the cell terminal 12.
• FIG. 4 shows a further possible embodiment of a battery cell 20 according to the invention with one possible embodiment of a battery cell according to the invention
• Cell cover 10 is shown, wherein the cell cover 10 is formed in Figure 4 from an upper part 11.3 and a lower part 11.4. In the lower part 11.4 of
• Cell cover 10 is formed a material recess 10.1, so that the fast discharge unit 13 can be arranged in the material recess 10.1 substantially positive fit.
• the upper part 11.3 of the cell lid 10 in this case has an opening in the region of the rapid discharge unit 13, so that the fast discharge unit 13 can be arranged on the lower part 11.4 of the cell lid 10.
• the connection sections 12.1 of the two cell terminals 12 are formed in FIG. 4 at a right angle to the cell terminal 12 and electrically connected via busbars 12. 2 to the fast discharge unit.
• FIG. 5 differs from the embodiments of FIGS. 1 to 4 in that the first cell terminal 12 serves as a closure for an opening of the terminal receptacle 14, wherein the terminal receptacle 14 of the first cell terminal 12 can serve as a filling opening. Accordingly, the opening of the terminal receptacle 14 can be closed via the first cell terminal 12. The filling opening formed by the terminal receptacle 14 can thus after filling the
• Battery cell 20 are preferably joined fluid-tight with the cell terminal 12.
• Figures 6a to 6d show possible embodiments of a
• FIG. 6a A cell lid 10 according to the invention is shown in FIG. 6a
• FIG. 6b shows a further possible embodiment of a cell lid 10 according to the invention.
• the cell lid 10 has a material recess 10. 1, the material recess 10. 1 preferably being made of the cell lid 10
• the cell lid 10 a terminal receptacle 14, which on the one hand can serve as a filling opening and at the same time can be closed by a cell terminal 12.
• the terminal receptacle 14 may preferably have a
• Terminal seal 14.1 are arranged so that a cell terminal 12 is electrically isolated from the cell cover 10 in the terminal receptacle 14 is arranged.
• connection section 12. 1 which is formed by the cell cover 10. It is the
• connection section 12.1 is a possible resistance current path due to further avoidance of
• Embodiment of a cell lid 10 of the invention shown. Similar to FIG. 6b, the cell lid 10 has a material recess 10.1, which is milled out in sections into the cell lid 10, so that the
• Fast discharge unit 13 at least partially positively in the
• Cell cover 10 can be kept.
• the cell cover 10 has a connection section 12. 1, which is formed from the cell cover 10.
• FIG. 6d shows the embodiment from FIG. 6c from a different perspective. It can be seen here that the connection section 12.1 is at least partially formed from the cell cover 10 and / or is of the same material.
• the cell cover 10 has a contour, so that the
• FIGS. 7a to 7c show a possible embodiment of a multi-part cell lid 10.
• FIG. 7a shows the assembled cell lid 10, consisting of an upper part 11.3 and a lower part 11.4.
• the upper part 11.3 of the cell lid 10 has one
• FIG. 7b shows the upper part 11.3 of the cell lid 10 shown in FIG. 7a.
• the upper part 11.3 has a
• FIG. 7c shows the lower part 11.4 of a cell lid 10, wherein beside one
• connection section 12.1 for a cell terminal 12 off the lower part 11.4 of the cell lid 10 is formed.
• the connection section 12.1 serves to electrically connect the anodes or cathodes of the cell interior to a cell terminal 12.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Electrochemistry (AREA)
• General Chemical & Material Sciences (AREA)
• Manufacturing & Machinery (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Connection Of Batteries Or Terminals (AREA)
• Gas Exhaust Devices For Batteries (AREA)
• Battery Mounting, Suspending (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=61231253

Family Applications (1)

Country Status (3)

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Citations (3)

Family Cites Families (10)

• 2017
  • 2017-03-21 DE DE102017204706.2A patent/DE102017204706A1/de not_active Withdrawn
• 2018
  • 2018-02-14 CN CN201880019709.2A patent/CN110419119A/zh active Pending
  • 2018-02-14 WO PCT/EP2018/053610 patent/WO2018171978A1/de active Application Filing

Patent Citations (3)

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