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
  • H01M10/04—Construction or manufacture in general
  • H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
• • 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
  • H01M10/04—Construction or manufacture in general
  • H01M10/0422—Cells or battery with cylindrical 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
  • H01M50/30—Arrangements for facilitating escape of gases
• • 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
  • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
  • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
  • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

• the invention relates to a battery with a degassing system and a method for discharging outlets of a battery, whereby the gases and electrolytes resulting from chemical activity can be discharged in a simple manner in a manner and cells of the battery before are protected from damage.
• Battery cells for example, lithium-ion cells, require a vent because certain operating conditions can lead to an overpressure in the cell.
• the gases under pressure must be able to escape.
• the leakage of gases can cause damage to the
• DE 600 03 843 T2 discloses a battery cover with ventilation system with which the gases resulting from the chemical activity are to be removed.
• the battery lid has an integrated gas collector, which is connected to a side channel with a recess in the lid side wall and opens into an intermediate chamber.
• a frit body is located in the depression and is arranged in such a way that all the gases flow through it and are introduced via a degassing opening into the frit Free to arrive.
• a bottom of the intermediate chamber is intended to serve as an electrolyte collector.
• the invention is therefore based on the object to provide a battery with optimized degassing, which avoids the aforementioned problems.
• the battery according to the invention comprises a degassing system, a base plate and at least one cell module arranged on the base plate with at least one battery cell, wherein the battery cell has a top provided with cell terminals and an underside provided with at least one degassing opening and the base plate at least at the location of the at least one degassing opening a passage to a collecting area, wherein the underside opposite to the top and the bottom is arranged in the direction of gravity below the top.
• the electrical connections of the battery cells and the degassing channels no longer have to be arranged in the same area.
• the degassing channels run according to the invention below the cells or modules.
• the electrolyte can not contaminate cells or other electrical contacts in leaks in the channels.
• the degassing channels can be made simpler, the number of separation points and thus the risk of leaks is reduced.
• the Gravity exploited to selectively dissipate the exiting substances. The leaked substances accumulate below the battery cells and the electrical components and can thus cause no short circuits.
• the cell module is screwed to the base plate and for sealing between the at least one battery cell and the base plate, an O-ring is arranged.
• an O-ring is arranged.
• the at least one battery cell is a lithium-ion cell.
• Lithium-ion cells offer better performance over other cell types. They have better weight and mass specific capacity and longer life.
• the base plate has degassing channels. This makes it advantageously possible to save the number of different components and thus material and installation costs. In addition, the reduction of components reduces the likelihood of leakage.
• a collecting basin is integrated as a collecting area in the base plate.
• the base plate advantageously has an additional function. There is no need for a separate unit with cooling function.
• the housing plate has at least one shaped piece. This advantageously makes a Conclusion to derive the leaks, so the gases and electrolytes created.
• the fitting comprises a check valve.
• the vehicle according to the invention comprises a battery with a degassing system, a base plate and at least one cell module arranged on the base plate with at least one battery cell, wherein the battery cell has a top provided with cell terminals and a bottom provided with at least one degassing opening and the base plate at the location of at least a degassing opening has at least one passage to a collecting area, wherein the underside opposite to the top and the bottom is arranged in the direction of gravity below the top.
• the exits are discharged via at least one degassing opening on an underside of the battery cell.
• the electrical connections of the battery cells and the degassing channels no longer have to be arranged in the same area.
• the degassing channels run according to the invention below the battery cells or modules.
• the electrolyte in leaks in the channels no cells or other electrical contact contaminate.
• the degassing channels can be made simpler, the number of separation points and thus the risk of leaks is reduced.
• the force of gravity is exploited in order to selectively divert the exiting substances. The leaked substances accumulate below the cells and the electrical components and thus can cause no short circuits.
• the battery cell is mounted on a base plate and the exits are passed through channels in the base plate, or collected in a reservoir in the base plate.
• the total length of the degassing channels is advantageously minimized, which further reduces the number of components and thus saves weight and additional space.
• Figure 1 a conventional battery cell
• Figure 2 a battery according to the invention with degassing.
• FIG. 1 shows a conventional battery cell 40 according to the prior art. On its upper side there are both cell terminals 42 and an overhead degassing opening 44. If a battery consists of several of these cells, a complicated line system is required to remove the gases and electrolytes emerging from the degassing openings.
• FIG. 2 shows a battery 10 according to the invention with a degassing system in a sectional view. On a housing plate 28, a base plate 22 is mounted. Between the housing plate 28 and the base plate 22, a housing plate seal 30 is arranged. On the base plate 22, a cell module 12 is attached with three battery cells 16 here. Each battery cell 16 has on a top 34 cell terminals 14.
• each battery cell 16 is provided with an underlying degassing opening 18.
• the degassing opening 18 of the battery cell 16 is here sealed directly to the base plate 22 via an O-ring 20. A pressing of this seal is ensured by screwing the entire cell module 12 on the base plate 22.
• the base plate 22 includes at the point at which the battery cells 16, the vent openings 18 have passages 24. In the illustrated embodiment, these are generated with holes. Through the passages 24 leaking electrolyte and escaping gas is selectively discharged to a collecting area.
• the base plate 22 is provided with a reservoir 26, which serves as a catchment area for the leaks of all three battery cells 16. Likewise, it is possible according to the invention to arrange the collecting area outside the base plate 22.
• the base plate 22 may also have degassing channels, by means of which the Austrre lines are forwarded.
• the collecting area is to be designed in such a way that it forms the lowest level of the battery or of a battery pack, ie all other components that can be damaged by the leaks are placed above.
• the containment area may also be sealed to the remainder of a system in which the battery of the invention is installed to ensure that the leaked electrolyte does not wet other components of the system that could be damaged thereby.
• the housing plate 28 is provided in the embodiment of Figure 2 in the region of the collecting basin 26 with a shaped piece 32.
• This may for example be a flanged check valve. It represents the interface to the environment in the degassing system.
• the Base plate 22 include, for example, a cooling, or be part of a cooling system.
• the battery 10 according to the invention can be used, for example, in a vehicle.

Landscapes

• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Electrochemistry (AREA)
• General Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Battery Mounting, Suspending (AREA)
• Gas Exhaust Devices For Batteries (AREA)
• Secondary Cells (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=43778526

Family Applications (1)

Country Status (6)

Cited By (1)

Families Citing this family (59)

Citations (5)

Family Cites Families (7)

• 2009
  • 2009-11-04 DE DE102009046385A patent/DE102009046385A1/de not_active Ceased
• 2010
  • 2010-09-21 EP EP10760972A patent/EP2497132A1/de not_active Withdrawn
  • 2010-09-21 US US13/505,503 patent/US20130059175A1/en not_active Abandoned
  • 2010-09-21 JP JP2012537331A patent/JP5508541B2/ja active Active
  • 2010-09-21 WO PCT/EP2010/063853 patent/WO2011054584A1/de active Application Filing
  • 2010-09-21 CN CN201080049108XA patent/CN102598358A/zh active Pending

Patent Citations (5)

Non-Patent Citations (1)

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