WO2002025752A1 - Housing for electrochemical cells - Google Patents
Housing for electrochemical cells Download PDFInfo
- Publication number
- WO2002025752A1 WO2002025752A1 PCT/DE2001/003552 DE0103552W WO0225752A1 WO 2002025752 A1 WO2002025752 A1 WO 2002025752A1 DE 0103552 W DE0103552 W DE 0103552W WO 0225752 A1 WO0225752 A1 WO 0225752A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- housing
- cover
- contact
- electrochemical cells
- vessel
- Prior art date
Links
- 239000000463 material Substances 0.000 claims abstract description 19
- 229910000679 solder Inorganic materials 0.000 claims abstract description 19
- 239000011521 glass Substances 0.000 claims abstract description 16
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910001416 lithium ion Inorganic materials 0.000 claims abstract description 11
- 229920000642 polymer Polymers 0.000 claims abstract description 11
- 238000002844 melting Methods 0.000 claims abstract description 9
- 230000008018 melting Effects 0.000 claims abstract description 9
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 8
- 239000000956 alloy Substances 0.000 claims abstract description 8
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000000945 filler Substances 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 4
- 239000011810 insulating material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 12
- 230000007774 longterm Effects 0.000 abstract description 2
- 239000004411 aluminium Substances 0.000 abstract 1
- 238000005476 soldering Methods 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 230000001070 adhesive effect Effects 0.000 description 8
- 238000004804 winding Methods 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 6
- 239000003792 electrolyte Substances 0.000 description 6
- 239000011888 foil Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 239000005518 polymer electrolyte Substances 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000011244 liquid electrolyte Substances 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000004922 lacquer Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000011255 nonaqueous electrolyte Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- -1 polyethylene terephthalate Polymers 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229920002449 FKM Polymers 0.000 description 1
- 102100031416 Gastric triacylglycerol lipase Human genes 0.000 description 1
- 101000941284 Homo sapiens Gastric triacylglycerol lipase Proteins 0.000 description 1
- 229910015645 LiMn Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- KLARSDUHONHPRF-UHFFFAOYSA-N [Li].[Mn] Chemical compound [Li].[Mn] KLARSDUHONHPRF-UHFFFAOYSA-N 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000002318 adhesion promoter Substances 0.000 description 1
- 239000006183 anode active material Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000006182 cathode active material Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000002322 conducting polymer Substances 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011245 gel electrolyte Substances 0.000 description 1
- 239000000156 glass melt Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000002648 laminated material Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 description 1
- 229910001486 lithium perchlorate Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 235000014214 soft drink Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007784 solid electrolyte Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
-
- 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
- H01M50/183—Sealing members
- H01M50/19—Sealing members characterised by the material
- H01M50/191—Inorganic material
-
- 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
- H01M50/183—Sealing members
- H01M50/19—Sealing members characterised by the material
- H01M50/198—Sealing members characterised by the material characterised by physical properties, e.g. adhesiveness or hardness
-
- 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 invention relates to a housing for electrochemical cells with pole feedthroughs, preferably in the cover, in particular for lithium-ion polymer batteries (hereinafter also called LIB).
- LIB lithium-ion polymer batteries
- cell housings and pole feedthroughs in the finished cover for electrochemical cells Each of them includes a polymer electrolyte that conducts lithium ions, two reversible electrodes that store lithium ions, and batteries that comprise one or more such cells, especially for those that use polymer electrolyte lithium batteries.
- Batteries, accumulators and the like basically consist of a housing in which electrodes and an electrolyte are arranged.
- polymer electrolyte describes a technology in which the separator does not consist of an “inert”, porous film and an injected liquid electrolyte, but instead of ion-conducting polymers with an additional separator function.
- Poles in particular lead poles, are passed through the cover of the housing
- a key quality feature of such batteries is a sealed pole feedthrough, ie this pole feedthrough should be electrolyte and gas tight over the entire life of the battery.
- Pole bolts or contacts of the generic type are known from DE 195 36 683. From DE 198 04 963, pole bolts are known which are suitable for galvanic cells with non-aqueous electrolytes, in which a large number of current conductors (contact capabilities) of the electrodes are connected to the pole bolts. It is A ceramic is provided in the passage area of the pole bolt through the cell cover, which is in particular soldered to the cell cover.
- the positive pole bolt is preferably made of titanium or a titanium alloy.
- the known battery cups consist regularly of stainless steel (such as SUS 304, SUS 316 or SUS 318 or molybdenum and various alloys such as stainless steel). From DE 198 39211 cell covers are known which provide connections for the use of a refill, each cell having a cover and the refill connections being connected when the refill connection and / or electrolyte circulating means are installed.
- a low internal resistance and improved storage behavior have a direct influence on the quality of the batteries (preservation of the nominal voltage, capacity).
- Contact problems of the active materials or collectors or oxidized (hydroxide) soiled battery sleeves can be mentioned as possible causes. To avoid this, it is known to provide notches.
- WO98 / 18170 it is known to coat the electrodes with a lacquer.
- Japanese patent H 9-171802 proposes organic coatings which are carbonated by heating and which then have further layers of chromium.
- DE 198 52 202 provides that particles of predominantly carbon are embedded in the galvanic coating. Disadvantages are known lead poles for LIB and separately sealed, hermetically sealed battery housings and troughs.
- Plastic solutions are not optimal because they are not permanently vapor-tight.
- Stainless steel and alloys made of it as material for battery cups are expensive and not cheap for LIB.
- Known ceramic connections tear off, and glass melts require very high temperatures, around 1500 ° C, are therefore disadvantageous.
- Contact problems resulting from chemical reactions such as oxidation reduce the quality of the batteries, none of the known solutions have proven to be advantageous for LIB, since in particular there was insufficient resistance and electrochemical compatibility.
- a concept for a controlled LIB could not be implemented because sensor contacts and functions, in particular, could not be suitably implemented.
- the task was to develop a finished cover with contact part for LIB, other electrochemical cells and the like, optimized cell housings and pole feedthroughs.
- LIB should be contacted and housed, which have a so-called front-side contact. These are wound offset, so that the cell laminate, monofilar or bifilar, with protruding metallic edges of metallic or other suitable current collectors, primarily copper and aluminum foils, can be contacted in accordance with requirements.
- the solutions had to help optimize energy density, be durable, durable, and leakproof, and should not require separate housings such as troughs that had to be hermetically sealed. In order to get sealed bushings, it was up to the company to find alternatives to glazings that are particularly demanding at low temperatures. Also to ensure the quality to the extent that a lower internal resistance and improved storage stability can be achieved and controllable batteries can be supported.
- a housing for electrochemical cells in particular for lithium-ion polymer batteries, which consists of a vessel which is directly connected to a contact (an electrode) and a cover made of the same Material in which the opposite pole contact (electrode) is inserted, protected by an insulating compound, is released when
- the vessel and its lid are made of aluminum or its alloys
- the lid is hermetically sealed to the vessel
- the opposite-pole contact leading through the housing is electrically and mechanically separated from the vessel by an insulating compound which has a melting point between 300 ° and 600 ° C and
- fill pipes or sensors are passed through the vessel or lid wall, which are also embedded in the insulating material.
- the vessel should preferably be designed as a cylindrical vessel (cup).
- Economical, vapor diffusion-tight, light and seamless housings which are also radiation-repellent and recyclable, can be produced according to the invention in particular from conventional aluminum, light metal and their alloys.
- Cups of the generic type, round and out-of-round, in particular from conventional capacitor cups and the like, can be selected as cell containers or housings.
- Such cups are usually manufactured industrially using the extrusion process and are available in appropriate quality. According to the invention, a particularly advantageous solution is seen in the use of so-called capacitor cups, which are often available industrially without additional tool costs.
- a contact (1) is already incorporated in the cup base (11), which serves for contacting or fixing and can be provided in various ways, for example by means of threads, slots, bores, in order to enable better contacting.
- the advantage is to design this contact (1) so that it can serve as a carrier for the electronics, which is disadvantageous on the cover side (see FIG. 2) due to higher mechanical loads.
- the contacts (1 and 7) can also be further treated, for example galvanically, in order to create improved electrical connections.
- the cup base (11) can also be of the same thickness as the cup wall (2), and feedthroughs can also be made here which serve, for example, current sensor connections.
- a conductive lacquer or adhesion promoter according to DE 100 30 571.7 is injected directly into the sleeves (FIG. 1) after the sleeves or cups have been produced and, if appropriate, freed from oil and resistance layers, such as aluminum oxide. This can be done in a simple manner as a possible further treatment using conventional paint guns.
- cans and containers round and out of round, made of different materials and material combinations (also cans for food) as a battery container.
- Soft drink cans and tin cans can be used, for example, which can be permanently closed using a simple machine (Lubeca). To do this, the lids are positioned and closed. The lids are fed automatically and can be pretreated if necessary. These containers are tightly manufactured using can closing machines, if necessary a sealant or sealing element can be incorporated. Adhesive techniques can also be used as locking technology and insulation of the bushings.
- FIG. 2 The structure of a battery cover according to the invention is outlined in FIG. 2.
- pole contact (7) which is passed through a cover and is preferably glazed (8) with glass solder, special connections for a current sensor (10) being provided. These can be glazed in one piece with the pole contact (7) or separately (8). Such implementation on the basis of glass solders could be produced with at least temperature resistance up to 150 ° C and pressure resistant up to 10 bar.
- a preferred variant is that the opposite-pole contact in the interior of the housing is designed as a plate, so that the two contacts (anode and cathode) almost fill the housing base and housing cover.
- the inside of the lid is deep-drawn (4) with an upstanding edge, preferably of the same wall thickness as the cup according to FIG. 2, which can be welded to the cup rim (3, 6) or hermetically sealed in another way.
- beads are incorporated in the lid base (9), which enable increased heat transfer and stabilize the lid according to FIG. 2.
- solder glasses are used as the insulating material. These are glasses with low viscosity and low surface tension with a melting point between 420 ° and 520 ° C.
- glass solder-like solder materials or composite solder with glass portions with melting points between 300 ° and 600 ° C. can also be used in the broadest sense.
- the glazing using commercially available glass solder (for example from TA 23 or PA 23 from AmeriGlas). If material combinations other than Cu / Al are to be provided, melting alloys such as Nicosil against glass solder and melting body should also be arranged. Such an alloy tube can be brazed to the Cu contact bolt (7).
- commercially available glass solder for example from TA 23 or PA 23 from AmeriGlas.
- pole feedthroughs (8) can also consist of epoxy glass hard fabric, laminated materials, mica products and mineral pressed materials, also of paper composites, whereby it must be differentiated to what extent a suitable technology and, depending on the application, a sufficient quality of the bushings with regard to resistance and diffusion tightness can be achieved
- the contact part according to FIG. 2 consists of a round bolt with a contacting unit (5).
- This consists of a highly conductive material, preferably copper (it is particularly advantageous to use S-ECU material qualities, i.e. oxygen-free copper, deoxidized or not deoxidized (in accordance with DIN 1787)), and notches, structures, coatings can be provided to protect the Protect contact, serve as a guide or better contact.
- the contacting unit is preferably worked as a contact plate (5) which is correspondingly smaller in diameter than the cover (6) and thus offers suitable protection against short circuits. A variant is to provide this contacting plate with openings to make it lighter.
- FIG. 2 shows an advantageous solution as a battery cover bushing.
- the inner cylinder height (4) for the glazing (8) should, however, be chosen so that it receives a good circulation, as suggested in FIG. 2 with approximately 3.5 mm. It is advantageous to provide axial depressions in the inner cylinder or inner edge (4), which can be continuous. As proposed, these axial depressions for the sintered glass body are worked into the inner cylinder (4) in a collar-shaped manner. This makes glazing easier, since the glass solder (8) finds good resistance, which can be called the glass solder brake.
- a non-conductive, temperature-resistant fixing and adhesive composition is preferably introduced into the distance between the contact plate (5) and the cup wall (2).
- adhesive tapes preferably electrical adhesive tapes or foils, in particular PET (polyethylene terephthalate) foils or glass flow materials, can be used.
- Epoxy materials and the anaerobic adhesives described are gap-filling, temperature-resistant from -60 ° to +220 ° C, because the hardening process can be influenced or activated by heat, especially by activators or heat, these materials are well suited for fixing the cell laminate in the cup.
- the contacting unit in particular can advantageously be fixed in a few seconds, for example by applying the adhesive. It is advantageous to use this fixing or Adhesives in that, to a certain extent, one measure improves the vibration resistance of the arrangement in the vibration test, reduces short-circuits and the contacting unit can be fixed quickly.
- Rupture disks (12) as structural overpressure safeguards can be incorporated as required, as illustrated in FIG. 3, and pressure valves can also be expedient.
- Filling nozzles known per se which can be hermetically sealed, are arranged in order to provide an evacuation after the formation, so that formation gas can escape and afterwards there is still access.
- Sensor bushings are just as easy to manufacture. They serve the generation of measurement data, which are to be arranged essentially in the context of a so-called intelligent battery.
- the glass bushing (8) or glass serves as a sensor element in that it generates excess pressure and, if necessary, eliminates it by bursting.
- each battery cell After construction, each battery cell, regardless of its chemical composition, needs a so-called formation. This is a phase of controlled charging and discharging, in which the later properties of the battery are decisively determined. In addition to the process of reversible energy storage, which will later ideally be the only process occurring, other processes also occur, such as the formation gas formation. These gases may have to be removed.
- Fig. 3 shows an embodiment of a pressure sensor with a rupture disk (12) made of glass solder, which can be arranged so or directly on the contact part.
- a so-called filler neck (10) or vacuum tube must be arranged.
- the rupture disc (12) can consist of the pole penetration material used as a predetermined breaking point, whereby one or more substances can also be installed.
- glass solders (8) of the types described is particularly advantageous according to the invention. Vacuum tube or the filler neck or the like is worked according to FIG. 3 to fit the rupture disc or the pressure sensor.
- FIG. 4 shows a finished, optimized cell housing with pole feedthrough primarily for lithium-ion polymer batteries.
- a filler neck or vacuum tube (10) is arranged, the solution of the glazing (8) is particularly suitable for one or more sensor bushings, which can be incorporated according to the invention as contact wires that are glazed (8).
- the edge of the cover (6) is permanently hermetically connected to the cup wall (2) or the cup rim (3) by means of suitable welding processes or other suitable joining techniques.
- An electronic battery management system provides additional functions that contribute to the controllable battery, relieve the load on other systems and are particularly useful in high-current applications.
- the current sensor should deliver the necessary data precisely and reliably to the BMS. It is characterized by higher accuracy and lower power loss, and thus enables a more precise determination of the state of charge. Information about the state of charge, service life etc. of the battery should be made available to the user.
- the battery receives "intelligence" from electronic components such as charging and power modules, and the current sensor to be integrated into the battery design, as described in DE 198 60 561.7.
- the following lithium-ion polymer battery creates a so-called gel electrolyte system.
- the polymer is the carrier for the high-boiling polar and aprotic electrolyte components (ethylene and propylene carbonate) in which a lithium conductive salt such as LIPF 6 , lithium perchlorate or LiCF 3 S0 3 is dissolved.
- a lithium conductive salt such as LIPF 6 , lithium perchlorate or LiCF 3 S0 3
- the lithium ion conductivity is now determined by the liquid component and is> 1 mS / cm.
- the electrolyte system also serves as a separator between the electrodes. This electrolyte can therefore hardly flow and This particularly affects the seal.
- Lithium-manganese spinel LiMn 2 ⁇ 4
- LiMn 2 ⁇ 4 LiMn 2 ⁇ 4
- Intercalation graphites are used as anode active material.
- the polymer electrolyte acts as a binder between the electrochemically active particles.
- the electrode masses are applied as thin layers (50 - 250 ⁇ m) to metal foils, and the battery is manufactured in a "sandwich" arrangement.
- self-adhesive laminates are created. This eliminates the contact pressure required with fixed liquid electrolyte systems due to the winding and free design becomes possible.
- the so-called cell winding results from the winding together of the three individual webs for anode, solid electrolyte and cathode (plus insulation film for monofilament winding).
- the protective films wrapped during the coating are removed.
- the contact is made on the respective coating free metal strips on the edge of the arrester foil. It takes place at the same time as the winding process using a friction welding process.
- Defined contact flags are attached to the metallic edge of the respective conductor foil in such a way that they come to lie on top of each other despite the variable winding circumference.
- One electrode is in contact with the bottom of the housing, the other is in direct connection with the contact plate of the cover.
- the lithium-ion polymer technology makes it possible to meet the demands of the market, e.g. the automotive industry, according to flexible design.
- the starting point are special, wound and contacted cells.
- the lamination and winding of the laminates allows for wide variations and modular construction of batteries for a wide variety of applications and performance areas.
- free shaping in flat cells of any size, in contrast to other battery systems, is feasible. This makes it possible for the device and battery to "fuse" to form a system with new, improved properties, for example by accommodating the battery as a housing component.
- Exemplary lithium polymer cells are 207 mm high according to a special design, have a diameter of 85 mm with a weight of 2.12 kg, 3.8 V and a nominal capacity of 5 Ah (C5).
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10194033T DE10194033D2 (en) | 2000-09-23 | 2001-09-15 | Housing for electrochemical cells |
AU2001291634A AU2001291634A1 (en) | 2000-09-23 | 2001-09-15 | Housing for electrochemical cells |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10047206.0 | 2000-09-23 | ||
DE10047206A DE10047206A1 (en) | 2000-09-23 | 2000-09-23 | Housing for electrochemical cells |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002025752A1 true WO2002025752A1 (en) | 2002-03-28 |
Family
ID=7657376
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2001/003552 WO2002025752A1 (en) | 2000-09-23 | 2001-09-15 | Housing for electrochemical cells |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2001291634A1 (en) |
DE (2) | DE10047206A1 (en) |
WO (1) | WO2002025752A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019081408A1 (en) * | 2017-10-27 | 2019-05-02 | Robert Bosch Gmbh | Battery cell and method for producing same |
Families Citing this family (14)
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DE102004034769A1 (en) * | 2004-07-19 | 2006-02-16 | Epcos Ag | Double layer capacitor, has end portions of capacitor winding layers connected via end face contact |
DE102007063188A1 (en) * | 2007-12-20 | 2009-06-25 | Daimler Ag | Battery and method for operating a battery |
DE102011080469B4 (en) | 2011-08-04 | 2023-12-28 | Varta Microbattery Gmbh | Battery with innovative pole feedthrough |
DE102011089700A1 (en) | 2011-12-22 | 2013-06-27 | Volkswagen Varta Microbattery Forschungsgesellschaft Mbh & Co. Kg | Battery e.g. lithium ion battery for e.g. notebook computer, has pneumatically actuated electrical switches that are operated to alter circuitry state when pressure within housing is above threshold value, and trigger safety mechanism |
DE102012213100B4 (en) | 2012-07-25 | 2015-08-06 | Volkswagen Varta Microbattery Forschungsgesellschaft Mbh & Co. Kg | Battery with thermal switch and pneumatically actuated switch and method for safe operation of the battery |
DE102013208555A1 (en) | 2013-05-08 | 2014-11-13 | Volkswagen Varta Microbattery Forschungsgesellschaft Mbh & Co. Kg | Battery with resettable safety device and suitable pole pins |
DE102014106056A1 (en) * | 2014-04-30 | 2015-11-05 | Elringklinger Ag | Electrochemical cell |
DE102014216435A1 (en) | 2014-08-19 | 2016-02-25 | Volkswagen Varta Microbattery Forschungsgesellschaft Mbh & Co. Kg | Battery with prismatic housing and manufacturing process |
DE102014118308A1 (en) | 2014-12-10 | 2016-06-16 | Hella Kgaa Hueck & Co. | Reflector for vehicles |
DE102015207070A1 (en) | 2015-04-17 | 2016-10-20 | Varta Microbattery Gmbh | Battery with prismatic metal housing |
DE102015207043A1 (en) | 2015-04-17 | 2016-11-17 | Varta Microbattery Gmbh | Battery with pneumo-electric safety switch |
DE102015221555A1 (en) | 2015-11-03 | 2017-05-04 | VW-VM Forschungsgesellschaft mbH & Co. KG | Sealing system for pole feedthrough |
EP4135088A1 (en) * | 2021-08-11 | 2023-02-15 | VARTA Microbattery GmbH | Energy storage element, composite of energy storage elements and manufacturing method |
DE102022202291A1 (en) | 2022-03-08 | 2023-09-14 | Volkswagen Aktiengesellschaft | Battery cell and method for recycling the same |
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US5306581A (en) * | 1989-06-15 | 1994-04-26 | Medtronic, Inc. | Battery with weldable feedthrough |
EP0921583A1 (en) * | 1997-12-05 | 1999-06-09 | Siemens Aktiengesellschaft | Sealing of high temperature fuel cells and high temperature fuel cell stacks |
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US4830940A (en) * | 1986-01-14 | 1989-05-16 | Wilson Greatbatch Ltd. | Non-agueous lithium battery |
AU635043B2 (en) * | 1989-07-12 | 1993-03-11 | Medtronic, Inc. | Lithium thionyl chloride resistant feedthrough |
-
2000
- 2000-09-23 DE DE10047206A patent/DE10047206A1/en not_active Withdrawn
-
2001
- 2001-09-15 AU AU2001291634A patent/AU2001291634A1/en not_active Abandoned
- 2001-09-15 WO PCT/DE2001/003552 patent/WO2002025752A1/en active Application Filing
- 2001-09-15 DE DE10194033T patent/DE10194033D2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US5306581A (en) * | 1989-06-15 | 1994-04-26 | Medtronic, Inc. | Battery with weldable feedthrough |
EP0921583A1 (en) * | 1997-12-05 | 1999-06-09 | Siemens Aktiengesellschaft | Sealing of high temperature fuel cells and high temperature fuel cell stacks |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019081408A1 (en) * | 2017-10-27 | 2019-05-02 | Robert Bosch Gmbh | Battery cell and method for producing same |
Also Published As
Publication number | Publication date |
---|---|
DE10194033D2 (en) | 2003-08-21 |
DE10047206A1 (en) | 2002-06-06 |
AU2001291634A1 (en) | 2002-04-02 |
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