CN108417885A - Compound pole structure and the compound glass method for sealing of aluminum hull power lithium-ion battery - Google Patents
Compound pole structure and the compound glass method for sealing of aluminum hull power lithium-ion battery Download PDFInfo
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- CN108417885A CN108417885A CN201810154545.6A CN201810154545A CN108417885A CN 108417885 A CN108417885 A CN 108417885A CN 201810154545 A CN201810154545 A CN 201810154545A CN 108417885 A CN108417885 A CN 108417885A
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- 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
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- 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
- H01M10/058—Construction or manufacture
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- 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
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- 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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses the compound pole of aluminum hull power lithium-ion battery structures and compound glass method for sealing, wherein compound pole includes two kinds of forms：First, inner surface is the housing jacketed electrode stem of cone, not sintered powder bed second is that comprising the cylindrical section being made of aluminium alloy or aluminum matrix composite or Cu-base composites, and involved in compound glass method for sealing between heat resisting gasket, the seal cover board containing step or cylindrical-opening, compound seal glass, heat resisting gasket and compound seal glass and the hot-press sealing mode after assembling them；The present invention uses activeness and quietness agent or filler, and the thermal shock resistance of phosphate or titanate glass and mechanical shock resistance is made to be improved.And, the present invention uses Heterogeneous Composite electrode, so that it is constituted compression-type sealing-in mode between compound seal glass and aluminum or aluminum alloy battery case, ensure that the electrical isolation air-tightness of splitting resistance and battery electrode closure of the compound glass under compression chord state.
Description
Technical field
The invention belongs to battery technology fields, and in particular to the compound pole of aluminum hull power lithium-ion battery structure with it is compound
Glass sealing method.
Background technology
Electric vehicle does not have to burns gasoline, is environmentally protective one of developing direction, in fact, the development of automobile just towards
Motorized and intelligent direction development.The power resources of electric vehicle are chargeable lithium ion battery, important component
Include the encapsulation of positive and negative electrode, diaphragm, electrolyte (liquid) and battery unit in battery unit.Academia and industrial quarters pair
Electrode material, diaphragm material and electrolyte is existing pays close attention to, to improve energy density, the charge and discharge of lithium ion battery
Performance etc., however to not causing enough concerning the sealing technique of battery security and the battery positive and negative electrode pole of service life
Attention.The why important sealing of lithium ion battery is because existing electrolyte has serious corrosivity：Lithium ion battery
Electrolyte be generally the lithium of phosphorus containing hexafluoro (LiPF6) organic matter mixed liquor, if the water or steam outside battery penetrate into battery
It is interior to be mixed with electrolyte, then hydrofluoric acid (HF) solution can be formed, by heavy corrosion battery component, short circuit is caused even to set off an explosion
Accident；If except electrolyte leakage to battery surface, the moisture in extraneous water or air can equally occur anti-with electrolyte
It answers, badly damaged battery, the safety and service life to automobile cause fatal harmful effect.
Existing plastics sealing-in is easy to be corroded intolerant to temperature, and meeting aging, resisting temperature changes poor performance, not anti-vibration, the service life
Short, interface causes to be easy leakage without chemical bonds；Difficult between ceramics and metal to weld when metallized ceramic sealing-in, metallize material
Material is not corrosion-resistant, and ceramics itself are frangible, and welding process generates residual thermal stress, and corrosion causes to damage closure with interfacial thermal stress
Reliability, stability and service life, in addition there are the disadvantages of manufacturing process complexity；And existing seal glass have it is anti-
Thermal shock and the poor problem of mechanical shock resistance, thus it is proposed that the compound pole structure of aluminum hull power lithium-ion battery
With compound glass method for sealing.
Invention content
The purpose of the present invention is to provide the compound pole of aluminum hull power lithium-ion battery structures and compound glass sealing-in side
Method, to solve to propose that existing plastics sealing-in intolerant to temperature, is easy to be corroded in above-mentioned background technology, meeting aging, resisting temperature variation
Poor performance, anti-vibration, short life, interface do not cause to be easy leakage without chemical bonds；Ceramics and gold when metallized ceramic sealing-in
Difficult welding between category, metallization material is not corrosion-resistant, and ceramics itself are frangible, and welding process generates residual thermal stress, corrosion and interface
Thermal stress leads to reliability, stability and the service life of damaging closure, and in addition there are the disadvantages of manufacturing process complexity；And
Existing seal glass has heat shock resistance and the poor problem of mechanical shock resistance.
To achieve the above object, the present invention provides the following technical solutions：The compound pole structure of aluminum hull power lithium-ion battery
Build with compound glass method for sealing, pre-processed heatproof washer is passed through into pole housing, and is placed on the bottom plate table of pole
On face, then places and fix cartridge seal cover board, heatproof washer with sealing-in fixture (fixture such as processed with graphite material)
Can be glass, glass ceramics, ceramics or other glass or ceramic matric composite, its softening temperature is than seal glass
Sealing temperature want high, its coefficient of thermal expansion is higher than 15x10-6/ DEG C, and it is steady with the chemistry that enough electrolyte resistances corrode
Qualitative, its cross sectional shape can be square, and rectangle or stairstepping, its interior diameter may diminish to make the inner surface and pole
Or the surface of its housing maximum outside diameter is in contact, can also arrive greatly keeps its outer surface equal with a certain outer surface of pole bottom plate
Together, not sintered ceramics glass powders under being filled on a part of surface of heatproof washer and being compacted and flatten sealing temperature,
Such as aluminium oxide (A1203), silica flour (Si02), boron nitride (BN) or graphite powder etc., wherein not sintered ceramics glass powders
One of effect be to reduce or discharge interfacial thermal stress.Then it is ceramic cyclic annular powder bed is placed in glass powder powder bed
Precast body, it is as previously mentioned, in glass added with the second phase glass or and ceramic particle, its purpose is to improve the strong of glass
Degree and toughness or splitting resistance, however sintering or the sealing temperature of glass can be improved by adding the second phase activeness and quietness agent, in order to
This adverse effect is eliminated, a kind of mode of hot-press sealing may be used, allow glass based composite material in lower temperature
Under be accomplished the Leakless sealing of battery electrode column, for example, by using the method for weight briquetting and pressure thick stick or pressure ring, wherein annular pressure
Block will have electrical insulating property and with the not wellability of glass or glue glass, as boron nitride (BN), graphite (to clean up afterwards,
Such as use blasting treatment), schmigel, compression bar (multiple) or pressure ring can be weights in order to provide gravity, can also be transmit it is outer
Come the pole or ring of pressure, it requires have enough density and heat resistance as used stainless steel, zirconium oxide etc. will after assembling
Wait for that the Positive Poles component of the resistance to oxidation of sealing-in is sent to sealing-in in air in Muffle furnace or chain-conveyer furnace or other stoves, sealing-in highest
Temperature is less than 600 DEG C, and high-temperature region sealing time is less than 1 hour, the cathode pole of cupric or copper alloy bottom plate for not resistance to oxidation
The sealing-in of column requires when sealing-in to pre-oxidize at less than 300 DEG C, is then having atmosphere (such as nitrogen N2) under conditions of protection,
Maximum temperature carries out sealing-in less than 600 DEG C and under conditions of high-temperature region sealing time is less than 1 hour, finally obtains battery electrode
Closure.
Preferably, the electrode terminal includes the outer tube being sleeved on aluminum or aluminum alloy stem, its outer surface is cylinder
Shape, inner surface is cylindrical or is preferentially cone, and the profile of the outer surface of the outer tube can be concavo-convex or it
He is conducive to improve the surface profile such as corrugated of interface cohesion area, and size dimension can be unrestricted, and electrode terminal
Can be Positive Poles can also be cathode pole, it includes aluminising carbon that the material of housing, which can be aluminium alloy, aluminum matrix composite,
SiClx or other coefficient of thermal expansion are between 17-20x10-6/ DEG C between metal or metal-base composites, the part of outer tube or
All wrapped up by seal glass or glass ceramics or powder bed.
Preferably, the electrode terminal can also include at least one aluminium alloy (including silico-aluminum) or aluminum-base composite material
Expect (such as aluminising silicon carbide, aluminium oxide) cylindrical section, size is without restriction, and outer surface can have bumps or other to be conducive to
Improve the profile of bonded area.And the heterogeneous material compound electrode terminal being made of cylindrical section is (containing aluminium, aluminium alloy, aluminum-base composite
One kind in material, copper, copper alloy and a variety of) can be Positive Poles can also be cathode pole.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) better than plastics machinery pressing sealing technique more air-tightness, because combination interface has chemical bond, envelope in the present invention
Connecing has compression in glass, while glass is than the good weatherability of plastics；
(2) more simple for process than ceramic metallization sealing technique, no metallization material is asked intolerant to electrolytic corrosion
Topic, the problem of will not more causing interface (drawing) due to coefficient of thermal expansion differs greatly stress is excessive and crack；
(3) this patent uses activeness and quietness agent, makes the thermal shock resistance of the low temperature sealing glass such as phosphate or titanate
Previous similar seal glass is greatly improved with mechanical shock resistance ratio；
(4) this patent uses Heterogeneous Composite electrode, make it with compound seal glass and aluminum or aluminum alloy battery case it
Between constitute compression-type sealing-in mode, ensure that the airtight of splitting resistance and electrode closure of the glass under compression chord state
Property.
Description of the drawings
Fig. 1 is the electrode closure structural schematic diagram of the present invention；
Fig. 2 is one of the pole composite design of present invention structural schematic diagram；
Fig. 3 is two structural schematic diagrams of the pole composite design of the present invention；
Fig. 4 is three structural schematic diagrams of the pole composite design of the present invention；
In figure：112- poles housing, 110- poles, 160- pressure rings, 150- annulars briquetting, 120- cartridge seals cover board,
130- Tao Ci glass powders, 131- heatproofs washer, 212- casings, 210- poles, 221- sealing ring caps, 220- cover boards, 210-1-
Bottom plate, 230- powder beds, 231- heatproofs washer, 312- casings, 310- poles, 321- sealing ring caps, 320- plane batteries cover board,
310-1- plane bottom plates, 330- powder beds, 331- heatproofs washer, 440-2- cylindrical sections.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, the present invention provides a kind of technical solution：The compound pole of aluminum hull power lithium-ion battery builds and answers
Glass sealing method is closed, pre-processed heatproof washer 131 is passed through into pole housing 112, and be placed on the bottom plate of pole 110
On upper surface, then places and fix part-cylindrical seal cover board with sealing-in fixture (fixture such as processed with graphite material)
120, heatproof washer 131 can be glass, glass ceramics, ceramics or other glass or ceramic matric composite, its softening temperature
Degree is higher than the sealing temperature of seal glass, its coefficient of thermal expansion is higher than 15x10-6/ DEG C, and with enough resistance to electrolysis
The chemical stability of corrosion, its cross sectional shape can be squares, and rectangle or stairstepping, its interior diameter may diminish to make
The inner surface is in contact with the surface of pole maximum outside diameter, can also arrive a certain outer surface for making its outer surface and pole bottom plate greatly
Flush, it is not sintered under being filled on a part of surface of heatproof washer 131 and being compacted and flatten sealing temperature and to
Eliminate interfacial thermal stress it is ceramic glass powder 130, such as aluminium oxide A1203, silica flour Si02, boron nitride BN or graphite powder etc.,
Then it is ceramic cyclic annular powder bed precast body is placed in 130 powder bed of glass powder, it is as previously mentioned, second is added in glass
Phase glass or and ceramic particle, its purpose is to improve the intensity of glass and toughness or splitting resistance, however add the
The agent of phase activeness and quietness can improve sintering or the sealing temperature of glass, and in order to eliminate this adverse effect, a kind of hot pressing may be used
The mode of sealing-in allows glass based composite material to be accomplished the Leakless sealing of battery electrode column, example at a lower temperature
Stressed method is such as applied using weight block, wherein annular briquetting 150 to have electrical insulating property and with the not wellability of glass or
Glass is not glued, such as boron nitride BN, graphite (clean up, such as with blasting treatment), schmigel, compression bar (multiple) or pressure ring afterwards
160 can be weight in order to provide gravity, can also be the pole or ring for transmitting pressure, it require to have enough density and
Heat resistance is as used stainless steel, zirconium oxide etc. that after assembling, the Positive Poles component for the resistance to oxidation for waiting for sealing-in is sent to Muffle furnace or chain
Sealing-in in air in formula stove or other stoves, sealing-in maximum temperature are less than 600 DEG C, and high-temperature region sealing time is less than 1 hour；For
The not sealing-in of the cathode pole of the cupric of resistance to oxidation or copper alloy bottom plate requires when sealing-in to pre-oxidize at less than 300 DEG C, then
There is atmosphere (such as nitrogen N2) under conditions of protection, be less than 1 hour less than 600 DEG C and in high-temperature region sealing time in maximum temperature
Under conditions of carry out sealing-in, finally obtain battery electrode closure.
It is airtight for the ease of insulating, in the present embodiment, it is preferable that electrode terminal 110 includes being sleeved on aluminum or aluminum alloy stem
On outer tube, its outer surface is cylinder, and inner surface is cylindrical or cone, and the profile of the outer surface can be recessed
Convex or other profiles for being conducive to improve interface cohesion area, size cun can be unrestricted, and electrode terminal can be just
Agent pole can also be cathode pole, and outer tube is partially or fully that seal glass or glass ceramics or powder bed are wrapped up.
It is airtight for the ease of insulating, in the present embodiment, it is preferable that electrode terminal 110 can also include that at least one aluminium closes
Gold or aluminum matrix composite cylindrical section, size is without restriction, and outer surface can have bumps or other to be conducive to improve combination
The profile of area.And it can also be pole pole that the heterogeneous material compound electrode terminal that is made of it of cylindrical section, which can be Positive Poles,
Column.
110 composite design scheme of pole in the present invention is：
1, such as Fig. 2, a kind of copper with type conical bench or copper alloy bottom plate 210-1 and the circle for being connected with aluminum or aluminum alloy cone
Taper pole 210, wherein a part for copper or copper alloy step are with the major part for the aluminum or aluminum alloy cone being connected by a kind of heat
212 tights of the lower aluminium alloy of the coefficient of expansion or aluminum matrix composite casing, if casing 212 and pole 210 connect
Contacting surface is not air-tightness, then casing 212 can be soldered or be brazed together with pole 210, formed airtight interfaces or
Contact surface.It should be noted that the conical surface of taper pole is to be coordinated by cold pressing or shrinkage surplus, realize and casing 212
Between form airtight interfaces or contact surface.Copper used-Al bimetal pole, when in order to use aluminium replace copper, realize reduce at
The purpose of this and attenuating weight, second is that in order to realize requirement of the negative electrode of lithium ion battery electrochemistry to copper material.On the other hand, whole
The outer surface of at least one trepanning on the battery cover board 220 of a plane tabular, tapping cover board is stacked with one and the same material of cover board
The sealing ring cap 221 of matter or similar thermal expansion can simply overlay cover board outer surface, can also be mechanically
It is limited or fixes or be brazed or weld together with cover board by the step on cover board.It makes pottery between bottom plate and battery cover board in pole
It is with a heatproof washer 231 in the outer of pole, it can be glass, glass ceramics, it might even be possible to be plastics, or electrical isolation is multiple
Condensation material, its cross sectional shape can be squares, and rectangle or stairstepping, its interior diameter may diminish to make the inner surface and pole
The surface of column maximum outside diameter is in contact, and can also arrive a certain outer surface flush for making its outer surface and pole bottom plate greatly.Heatproof
The temperature tolerance of washer is at least above 100 DEG C than seal glass, while its coefficient of thermal expansion should not be smaller than glass too many, best
It is close.Pole (210 and 210-1) uses glass between casing 212 and cover board 220 and sealing ring cap 221 and heatproof washer 231
Glass, glass ceramics or compound glass material (lamellar composite or disperse compound type) are used as electrical insulating property and Leakless sealing.Together
Sample should be filled to eliminate interfacial thermal stress in compound glass and electrode terminal bottom plate and heatproof washer area defined
And not sintered ceramics glass powders 230 are compacted and flatten under sealing temperature.In order to improve the secured of post sealing structure part
Property, plastic splint or coating are used in two sides of cover board around pole.
2, such as Fig. 3, a kind of aluminium and the round pole of aluminium alloy (such as trade mark 1060 or 3003 etc.) of the 310-1 containing plane bottom plate
310, there are two sections of two various outer diameters, is wherein cased with the lower aluminium alloy of coefficient of thermal expansion or aluminum-base composite outside small outer diameter section
Material bushing 312 can be by casing 312 and pole if casing 312 and the contact surface of pole 310 do not have air-tightness
310 welding are brazed together, and form airtight interface.On the other hand, at least one is opened on entire plane battery cover board 320
Hole, the outer surface of tapping cover board are stacked with one and cover board same material or the sealing ring cap 321 of similar thermal expansion, can be with
It is simply to overlay cover board outer surface, can also be mechanically to be limited or fixed or be brazed with cover board by the step on cover board
Or weld together.It is with thermotolerant pad circle 331 between pole bottom plate and battery cover board and in the outer of pole, it can be glass
Glass, glass ceramics, ceramics, it might even be possible to be plastics or electric insulation composite material, its cross sectional shape can be square, square
Shape or stairstepping, its interior diameter may diminish to that the inner surface and the surface of pole maximum outside diameter is made to be in contact, can also arrive greatly
Make a certain outer surface flush of its outer surface and pole bottom plate.The temperature tolerance of heatproof washer is at least above than seal glass
100 DEG C, while its coefficient of thermal expansion should not be smaller than glass too many, preferably close to.Pole 310 and casing 312 and cover board 320 and close
Between seal ring lid 321 using glass, glass ceramics or powder bed (lamellar composite or disperse compound type) as electrical insulating property and
Leakless sealing.Equally, it in order to eliminate interfacial thermal stress, should be enclosed in compound glass and electrode terminal bottom plate and heatproof washer
At region, fill and be compacted and flatten under sealing temperature not sintered ceramics glass powders 330.It is close in order to improve pole
The fastness of sealed knot component uses plastic splint or coating around pole in two sides of cover board.
3, such as Fig. 4, a kind of aluminium and the round pole of aluminium alloy (such as trade mark 1060 or 3003 etc.) of the 310-1 containing plane bottom plate
310, middle part have a dissimilar materials cylindrical section 410-2, be the lower aluminium alloy of coefficient of thermal expansion or aluminum matrix composite, with
The matched coefficients of thermal expansion of compound glass hermetic links together with other electrode terminal sections.On the other hand, entire plane
At least one trepanning on battery cover board 320, it is swollen to cover board same material or similar heat that the outer surface of tapping cover board is stacked with one
The sealing ring cap 321 of swollen coefficient can simply overlay cover board outer surface, can also be mechanically by the platform on cover board
Rank limits or fixes or is brazed or welds together with cover board.Between pole bottom plate and battery cover board and in the periphery of pole
There is heatproof washer 331, it can be glass, glass ceramics, ceramics, it might even be possible to it is plastics or electric insulation composite material, it
Cross sectional shape can be square, and rectangle or stairstepping, its interior diameter may diminish to make the inner surface and pole maximum outside diameter
Surface be in contact, a certain outer surface flush for making its outer surface and pole bottom plate can also be arrived greatly.The heatproof of heatproof washer
Property than at least above 100 DEG C of seal glass, while its coefficient of thermal expansion should not be smaller than glass too many, preferably close to.Pole
Glass, glass ceramics or powder bed (lamellar composite are used between 310 and cylindrical section 410-2 and cover board 320 and sealing ring cap 321
Or disperse compound type) it is used as electrical insulating property and Leakless sealing.It equally, should be in compound glass in order to eliminate interfacial thermal stress
With electrode terminal bottom plate and heatproof washer area defined, fills and be compacted and flatten not sintered pottery under sealing temperature
Porcelain glass powder 330.In order to improve the fastness of post sealing structure part, plastic clip is used in two sides of cover board around pole
Plate or coating.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. compound pole structure and the compound glass method for sealing of aluminum hull power lithium-ion battery, it is characterised in that containing heterogeneous multiple
Between conjunction pole, glass or glass ceramics or ceramic base heat resisting gasket, compound seal glass, heat resisting gasket and compound seal glass
Not sintered glass/ceramic powder bed, the opening containing step aluminum or aluminum alloy seal cover board and after they are assembled
Hot-press sealing mode：Pre-processed heatproof washer (131) is passed through into combination electrode, such as (two is compound for pole housing (112)
One of pole form), and be placed on the plate upper surface of pole (110), it then places and with sealing-in fixture (as used graphite material
The fixture of matter processing) the partly or wholly seal cover board (120) that fixes tubular centre bore, the one of heatproof washer (131)
On portion of upper surface or enclosure region fills and flattens not sintered ceramics glass fine powders end bed (130) under sealing temperature, so
Afterwards it is ceramic the cyclic annular prefabricated body of compound glass (not indicating) is placed in 130 powder bed of glass powder, then in gas appropriate
The electrode glass process for sealing (or being hot-press sealing) under pressure condition is carried out under atmosphere (under oxidation or protective atmosphere), is made compound
Glass material can be accomplished the electrical isolation Leakless sealing of battery electrode column at a lower temperature.
2. compound pole structure and the compound glass method for sealing of aluminum hull power lithium-ion battery according to claim 1,
It is characterized in that：Electrode terminal (110) system is made of aluminum or aluminum alloy stem, and is cased with outer tube on its outer surface, should
The outer surface of outer tube is cylinder, and inner surface is preferentially cone, and the profile of the outer surface of the outer tube can be recessed
Surface profile such as corrugated convex or that other are conducive to improve interface cohesion area, size or length size are not added with limit
System, and the material of outer tube can be aluminium alloy (such as silico-aluminum), copper or copper alloy or ooze copper silicon carbide, aluminum matrix composite
Including aluminising silicon carbide or other coefficient of thermal expansion between 17-20x10-6/ DEG C between metal (such as Stainless Steel or dilval)
Or metal-base composites, it is air-tight packaging, the office of the outer tube between electrode terminal (110) and pole housing (112)
Portion will all be coated by seal glass or glass ceramics or compound glass material, and electrode terminal as described above can be electricity
The Positive Poles in pond can also be cathode pole.
3. compound pole structure and the compound glass method for sealing of aluminum hull power lithium-ion battery according to claim 1,
It is characterized in that：The aluminum or aluminum alloy electrode terminal (110) can also be not comprising outer tube, but contain at least one in pole
Column it is axial or longitudinal it is upper with other pole parts are connected and cylindrical section (or conical section or ellipse vertebra in the middle part of pole
Section), the cylindrical section by aluminium alloy (including silico-aluminum) or aluminum matrix composite (such as aluminising silicon carbide, aluminising aluminium oxide),
Or copper or copper alloy or ooze the materials such as copper silicon carbide and constituted, although the shape of the cylindrical section is without restriction, its size should protect
For card within the scope of the cladding of sealing-in compound glass, outer surface can also have bumps or other to be conducive to improve bonded area
Profile.And the cylindrical section can connect into heterogeneous material compound electrode with either method such as friction welding (FW) and other pole parts
Pole, the Positive Poles that can be used as battery can also be used as cathode pole.
4. compound pole structure and the compound glass method for sealing of aluminum hull power lithium-ion battery according to claim 1,
It is characterized in that：When hot-press sealing, it includes using annular weight briquetting (150) and multiple compression bars (160) to apply stressed method,
Wherein annular weight briquetting will have electrical insulating property and not glue glass with the not wellability of glass or not, such as boron nitride BN, graphite (thing
After to clean up, such as with blasting treatment), schmigel, and compression bar (multiple) or pressure ring (160) can be weights in order to provide weight
Power can also be the pole or ring for transmitting extraneous pressure, it requires have enough density and heat resistance as used stainless steel, oxygen
Change zirconium etc.；In order to carry out hot-press sealing, the Positive Poles component for the resistance to oxidation for waiting for hot-press sealing is sent to Muffle furnace or chain-conveyer furnace
Or sealing-in in air in other stoves, sealing-in maximum temperature are less than 600 DEG C, high-temperature region sealing time is less than 1 hour, and for not
The sealing-in of the cupric of resistance to oxidation or the cathode pole of copper alloy bottom plate requires when sealing-in to pre-oxidize at less than 300 DEG C, then exist
There is atmosphere (such as nitrogen N2) under conditions of protection, in maximum temperature less than 600 DEG C and in high-temperature region sealing time less than 1 hour
Under the conditions of carry out sealing-in, finally obtain the lithium ion battery positive and negative electrode closure of requirement.
5. compound pole structure and the compound glass method for sealing of aluminum hull power lithium-ion battery according to claim 1,
It is characterized in that：The combination electrode pole, aluminum or aluminum alloy stem and outer tube (such as aluminium alloy (such as silico-aluminum), copper
Copper alloy or ooze copper silicon carbide, aluminum matrix composite) between air-tightness combination process can be following process individually make
With or be applied in combination:Mechanical press, the surplus cooperation using expanding with heat and contract with cold, welding (soldering, Laser Welding, electric resistance welding, electron beam
Weldering, microwave joining etc.), wherein soldering can be seal glass before compound glass sealing-in or in compound glass sealing-in with
Fusion seal while cored solder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810154545.6A CN108417885B (en) | 2018-02-23 | 2018-02-23 | Method for constructing composite pole of aluminum-shell power lithium ion battery and sealing composite glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810154545.6A CN108417885B (en) | 2018-02-23 | 2018-02-23 | Method for constructing composite pole of aluminum-shell power lithium ion battery and sealing composite glass |
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| Publication Number | Publication Date |
|---|---|
| CN108417885A true CN108417885A (en) | 2018-08-17 |
| CN108417885B CN108417885B (en) | 2021-04-16 |
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| CN201810154545.6A Active CN108417885B (en) | 2018-02-23 | 2018-02-23 | Method for constructing composite pole of aluminum-shell power lithium ion battery and sealing composite glass |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109256499A (en) * | 2018-11-01 | 2019-01-22 | 中澳科创（深圳）新材料有限公司 | A kind of glass-sealed seal assembly of aluminum hull power battery electrode pole and its method for sealing |
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| CN113991229A (en) * | 2021-10-25 | 2022-01-28 | 芜湖天弋能源科技有限公司 | Lithium battery pack and assembling device thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109256499A (en) * | 2018-11-01 | 2019-01-22 | 中澳科创（深圳）新材料有限公司 | A kind of glass-sealed seal assembly of aluminum hull power battery electrode pole and its method for sealing |
| CN109301151A (en) * | 2018-11-01 | 2019-02-01 | 中澳科创（深圳）新材料有限公司 | A kind of battery electrode pole glass sealing structure and its method for sealing |
| CN109256499B (en) * | 2018-11-01 | 2023-08-11 | 深圳中傲新瓷科技有限公司 | Sealing assembly for sealing electrode post glass of aluminum shell power battery and sealing method thereof |
| CN109301151B (en) * | 2018-11-01 | 2024-02-06 | 深圳中傲新瓷科技有限公司 | Battery electrode post glass sealing structure and sealing method thereof |
| CN112599834A (en) * | 2020-12-04 | 2021-04-02 | 广东微电新能源有限公司 | Battery with a battery cell |
| CN113991229A (en) * | 2021-10-25 | 2022-01-28 | 芜湖天弋能源科技有限公司 | Lithium battery pack and assembling device thereof |
| CN113991229B (en) * | 2021-10-25 | 2023-08-04 | 芜湖天弋能源科技有限公司 | Lithium battery pack and assembly device thereof |
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