CN105742530B - Battery cover board assembly, preparation method and single battery and battery pack - Google Patents
Battery cover board assembly, preparation method and single battery and battery pack Download PDFInfo
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- CN105742530B CN105742530B CN201610109010.8A CN201610109010A CN105742530B CN 105742530 B CN105742530 B CN 105742530B CN 201610109010 A CN201610109010 A CN 201610109010A CN 105742530 B CN105742530 B CN 105742530B
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- cover board
- sealant
- electrode terminal
- battery
- insulating part
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- 238000001746 injection moulding Methods 0.000 claims description 12
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- 238000004381 surface treatment Methods 0.000 claims description 10
- -1 Poly-s 179 Polymers 0.000 claims description 9
- 239000003792 electrolyte Substances 0.000 claims description 9
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 7
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 239000012812 sealant material Substances 0.000 claims description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 4
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- 230000003014 reinforcing effect Effects 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 230000002708 enhancing effect Effects 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000008188 pellet Substances 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 claims description 2
- 239000004408 titanium dioxide Substances 0.000 claims description 2
- HBGPNLPABVUVKZ-POTXQNELSA-N (1r,3as,4s,5ar,5br,7r,7ar,11ar,11br,13as,13br)-4,7-dihydroxy-3a,5a,5b,8,8,11a-hexamethyl-1-prop-1-en-2-yl-2,3,4,5,6,7,7a,10,11,11b,12,13,13a,13b-tetradecahydro-1h-cyclopenta[a]chrysen-9-one Chemical compound C([C@@]12C)CC(=O)C(C)(C)[C@@H]1[C@H](O)C[C@]([C@]1(C)C[C@@H]3O)(C)[C@@H]2CC[C@H]1[C@@H]1[C@]3(C)CC[C@H]1C(=C)C HBGPNLPABVUVKZ-POTXQNELSA-N 0.000 claims 1
- PFRGGOIBYLYVKM-UHFFFAOYSA-N 15alpha-hydroxylup-20(29)-en-3-one Natural products CC(=C)C1CCC2(C)CC(O)C3(C)C(CCC4C5(C)CCC(=O)C(C)(C)C5CCC34C)C12 PFRGGOIBYLYVKM-UHFFFAOYSA-N 0.000 claims 1
- SOKRNBGSNZXYIO-UHFFFAOYSA-N Resinone Natural products CC(=C)C1CCC2(C)C(O)CC3(C)C(CCC4C5(C)CCC(=O)C(C)(C)C5CCC34C)C12 SOKRNBGSNZXYIO-UHFFFAOYSA-N 0.000 claims 1
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- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims 1
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- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 10
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- 230000006978 adaptation Effects 0.000 description 1
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- 239000011230 binding agent Substances 0.000 description 1
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- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
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- 230000009477 glass transition Effects 0.000 description 1
- XEMZLVDIUVCKGL-UHFFFAOYSA-N hydrogen peroxide;sulfuric acid Chemical compound OO.OS(O)(=O)=O XEMZLVDIUVCKGL-UHFFFAOYSA-N 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
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- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 1
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- 229910052708 sodium Inorganic materials 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The present invention provides a kind of battery cover board assembly and preparation method thereof and single battery and battery pack, battery cover board assembly includes cover board, tubular rivet, electrode terminal, sealant and insulating part；Wherein, it is additionally provided with sealant between electrode terminal and insulating part, can mutually be fused with insulating part under sealant molten condition；Microcellular structure is furnished on the face that electrode terminal is contacted with sealant.Battery cover board assembly of the invention passes through processing before sealant is arranged between electrode terminal and insulating part and carries out to electrode terminal, reduce polymer insulation part because deforming the especially influence to the sealing associativity of electrode terminal and cover board such as diminution caused by various environmental factors such as temperature etc., increase the binding force of inorganic metal and organic polymer, not only increase the connectivity robustness of electrode terminal and cover board, the sealing performance of cover plate assembly is also further enhanced simultaneously, meets the growth requirement of existing battery.Provide a kind of single battery that performance is more stable and battery pack.
Description
It is on November 28th, 2009 that the application, which is the applying date, application No. is 200910188461.5, entitled " battery cover board
The divisional application of the Chinese invention patent application of component, preparation method and single battery and battery pack ".
Technical field
The present invention relates to field of batteries, the preparation side of a kind of battery cover board assembly, battery cover board assembly is more particularly related to
Method and contain the battery cover board assembly single battery and battery pack.
Background technique
Currently, the advantages that battery is high, pollution-free with its energy, is more widely deployed for mobile phone, digital camera etc.
It is right as it is widely applied in portable electronic products, while also as the standby energy of the large scale equipments such as automobile, space station
The requirement of its properties also not only improves.
Battery cover board assembly is generally by clamping insulating part between tubular rivet and electrode terminal come sealed cell, or is insulating
Binder is injected on the contact surface of part and electrode terminal to reinforce sealing, insulating part, which generally passes through directly injection molding, to be completed, but such
Sealing means are simultaneously insecure, and the binding force between metal and organic polymer is very weak, it is violent or largely jolt during may
The problems such as falling off, lead to the seal failure of battery, may cause electrolyte leakage, cause electric leakage, burn into capacity attenuation, simultaneously
Loosening will also result in the problems such as electrode terminal connect loosening with pole piece and also will affect the output performance of battery, or even the electrode of loosening
Short circuit may occur in the moving process of battery for terminal, bring security risk etc.；The hot spot automobile especially studied now is dynamic
Power battery, it is higher to the connectivity robustness requirement of its component since its working condition need to be in mobile even jounce condition, and make
Battery pack is to realize serial or parallel connection by the electrode terminal welding on cover board by multiple batteries, realizes power supply, for
Security consideration, the component of the output electric current such as electrode terminal and electrode terminal connect it is general relatively tightly, it is easy in battery moving process
In be vibrated, pull, impact, be easy to cause the connection of electrode terminal and cover board to loosen, the leakproofness of battery cover board made
At influence, the reliability of the connection between single battery is impacted, the performance of entire battery pack is impacted.
Summary of the invention
It is not firm enough that the present invention overcomes the connections of the electrode of the battery cover board assembly of the prior art and cover board, sealing performance
It is not ideal enough, be easy the electrode in transport and use process and loosen, influence the output of battery, security performance the problems such as.
Provide a kind of battery cover board assembly, including cover board, tubular rivet, electrode terminal, sealant and insulating part；
The cover board is equipped with through-hole, and tubular rivet is arranged on the cover board, the hollow space and through-hole of the tubular rivet
It communicates；
The insulating part is located in tubular rivet；
The electrode terminal passes through insulating part, and tubular rivet clamps insulating part with insulated enclosure electrode terminal；
Wherein, sealant, the sealant and insulating part are additionally provided between the tubular rivet and insulating part described exhausted
Fusion is generated in the forming process of edge part；
It is furnished with microcellular structure on the face that the tubular rivet is contacted with sealant, the sealant and is furnished with the micropore knot
The surface of the tubular rivet of structure combines.
Wherein, the present invention is equipped with sealant between tubular rivet and insulating part, and sealant can cover entire hollow riveting
The face contacted with insulating part is followed closely, is also possible to the face that part covering tubular rivet is contacted with insulating part, it might even be possible to be that covering is whole
The surface of a tubular rivet only need to guarantee there is sealant between tubular rivet and insulating part.The present invention even can be hollow
Female seat slot is set on rivet, after the inner surface of female seat slot is surface-treated, is arranged inside female seat slot
It is molded insulating part after sealant, guarantees that sealant and insulating part melt binding, such structure are not take up battery volume, reinforces sealing
Connectivity.The present invention is preferably directly surface-treated tubular rivet, and sealant is arranged afterwards, increases the secured of sealed connection
Property, and the influences to battery such as insulating part deformation are prevented, the especially electric conductivity of electrode terminal and thermal diffusivity not will cause shadow
It rings.
Battery cover board assembly of the invention by between tubular rivet and insulating part be arranged sealant and to tubular rivet into
Row pre-treatment reduces polymer insulation part and especially reduces to hollow because deforming caused by various environmental factors such as temperature etc.
The influence of the sealing associativity of rivet and cover board increases the binding force of inorganic metal and organic polymer, not only increases hollow
The connectivity robustness of rivet and cover board, while the sealing performance of cover plate assembly is also further enhanced, meet the hair of existing battery
Exhibition demand.Influence of the vibration to cell sealing-structure that can be reduced the connections such as welding reduces mobile jolt etc. to cell sealing knot
The influence of structure reduces the decline of output performance, security performance of battery that loosens and may cause etc..Emphasis solves existing length
Phase is in the power battery of the electric car for the environment that jolts, and is easy to appear the difficulties such as cover plate assembly sealing loosening, ensure that
Its output performance, security performance etc. ensure that its stability, further lay a good foundation for the large-scale application of electric vehicle.
It is a further object to provide the preparation methods of above-mentioned battery cover board assembly, comprising: in tubular rivet
Setting sealant and the face that sealant first need to be arranged to tubular rivet, which carry out surface treatment, on inner surface makes it be furnished with microcellular structure；
On the cover board by tubular rivet setting, the hollow space of tubular rivet is communicated with through-hole；
Electrode terminal is passed through to the hollow space of tubular rivet；
It is molded insulating part between sealant and electrode terminal, fuses the sealant and the insulating part.
Preparation method of the invention, it is simple easily to realize, it is conducive to large-scale production.
Third object of the present invention is to provide a kind of sealing performance is more excellent, security performance and output performance are preferably single
Body battery, including battery cover board assembly, shell, pole piece and electrolyte；Pole piece and electrolyte are encapsulated in shell and battery cover board group
In the sealing space that part is formed；Battery cover board assembly top electrode terminal one end is electrically connected with pole piece, and the other end stretches out sealing space
It is outer to be used as battery electrode, wherein battery cover board assembly is above-mentioned battery cover board assembly.
Fourth object of the present invention is to provide a kind of battery pack using above-mentioned battery, including above-mentioned single battery passes through
Be connected in series or in parallel, serial or parallel connection by the overlap joint of electrode terminal, docking or flange to fetch realize.
The performance of single battery and battery pack of the invention is stablized, and is more avoided that extraneous irresistible factor to battery
The influence of performance ensure that the normal use of battery, meet the growth requirement of the prior art, and it is excellent in particular, provide a kind of performance
The good automobile power cell that can guarantee output stability energy and security performance.
Detailed description of the invention
Fig. 1 is the surface electron microscope of electrode terminal of the invention；
Fig. 2 is a kind of structural schematic diagram of preferred embodiment of battery cover board assembly of the invention；
Fig. 3 is the structural schematic diagram of another preferred embodiment of battery cover board assembly of the invention；
The top view of battery cover board assembly Fig. 4 of the invention.
Specific embodiment
In order to which the technical problems, technical solutions and beneficial effects solved by the present invention is more clearly understood, below in conjunction with
Accompanying drawings and embodiments, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
It is not firm enough that the present invention overcomes the connections of the electrode of the battery cover board assembly of the prior art and cover board, sealing performance
It is not ideal enough, be easy the electrode in transport and use process and loosen, influence the output of battery, security performance the problems such as.
The sealing for providing a kind of electrode and cover board is more secured, and sealing performance is more excellent, is especially able to satisfy the Large-scale Mobiles such as automobile
The battery cover board assembly of the requirement of equipment, including cover board, tubular rivet, electrode terminal, sealant and insulating part；Cover board is equipped with
Through-hole, tubular rivet are arranged on the cover board, and the hollow space of tubular rivet is communicated with through-hole；Insulating part is located in tubular rivet；
Electrode terminal passes through insulating part, and tubular rivet clamps insulating part with insulated enclosure electrode terminal；Wherein, electrode terminal and insulating part
Between be additionally provided with sealant, sealant can mutually fuse in the molten state with insulating part；Electrode terminal is contacted with sealant
Microcellular structure is furnished on face.The present invention is surface-treated electrode terminal, and sealant, and sealant energy and insulating part are arranged afterwards
Mutually fusion, increases the fastness of sealed connection, and prevents the influences to battery, especially electrode tip such as insulating part deformation
The electric conductivity and thermal diffusivity of son will not impact.Battery cover board assembly of the invention can be reduced the vibration of the connections such as welding to electricity
The influence of pond sealing structure reduces the influence moved and jolted etc. to cell sealing-structure, reduces the battery that loosens and may cause
Output performance, security performance etc. decline.
Further, the present invention is additionally provided with sealant preferably between tubular rivet and insulating part, further increases leakproofness
Can, equally it is also preferred that sealant can mutually fuse in the molten state with insulating part, on the face that tubular rivet is contacted with sealant
It is furnished with microcellular structure.Sealant can cover the face that entire tubular rivet is contacted with insulating part, and it is hollow to be also possible to part covering
The face that rivet is contacted with insulating part only need to guarantee that the inner surface of tubular rivet has sealant.
The preferred tubular rivet of the present invention is structure as a whole with cover board, can be formed by casting etc., further enhance adaptation.
It is preferred that insulating part forms spacer ring in cover board lower surface by cover plate through hole, enhances sealing performance, reduce the possibility of short circuit, further
Improve security performance.It is preferred that insulating part is formed in tubular rivet by injection molding, injection molding is generally high-temperature fusion injection moulding, i.e.,
It is preferred that sealant and insulating part can generate fusion in the forming process of insulating part, reinforce sealing performance, method is simply easily realized.
Wherein, the material of insulating part and sealant can be the same or different, and can be independently selected from injection grade
Perfluoroalkyl alkoxy copolymer, Poly-s 179, polyphenylene sulfide, modified polypropylene, ethylene propylene diene rubber, epoxy resin, phenolic aldehyde change
One or more of property epoxy resin, bi-component epoxide-resin glue or hot melt adhesive；Wherein, sealant is that above-mentioned material heating is molten
Melt the dense seal layer formed after sintering, it can be by being infused in the surface treated metal surface needed and sealant contacts
It is sintered and is formed after modeling, hot pressing, spraying or coating above-mentioned material.
In order to further increase the levelability and binding force of sealant, it can also add and fill out in the preferred sealant of the present invention
Material, filler are more preferably one or more of nanometer titanium dioxide, nano aluminium oxide and graphite powder etc., can be used conventional
Method be scattered in sealant.
Wherein, the micropore size of microcellular structure is preferably 10nm~2 μm, and micropore hole depth is preferably 20~2 μm, is further mentioned
The binding ability of high inorganic metal and organic polymer improves sealing performance.
Wherein, the various electric conductors that electrode terminal is known to the skilled person, material are selected from copper, aluminium, nickel, gold, silver
One or more of, selection determination can be carried out according to the model of battery.Wherein, sealant need to be arranged to metal electrode terminal
Surface be surface-treated before sealant is set, be surface-treated make electrode terminal that sealant need to be set surface be covered with micropore
Structure.Surface treatment can be the surface to entire electrode terminal, be also possible to the face carry out table that need to only contact with sealant
Surface treatment, it might even be possible to be that the part of the surface that need to be contacted with sealant is surface-treated, need to only guarantee electrode terminal and sealing
The face of layer contact is equipped with microcellular structure, enhances the associativity of metal and sealant.
The various hollow rivets that tubular rivet is known to the skilled person, material is in copper, aluminium, nickel, gold, silver
One or more.The surface that sealant need to be arranged to metal hollow rivet is surface-treated before sealant is arranged, surface
The surface that handling makes tubular rivet that sealant need to be arranged is covered with microcellular structure.Same surface treatment can be to entire tubular rivet
Inner surface, be also possible to be surface-treated the face that need to only contact with sealant, it might even be possible to be that need to contact with sealant
Part of the surface be surface-treated, need to only guarantee that face that tubular rivet contact with sealant is equipped with microcellular structure, enhance golden
Belong to the associativity with sealant.
Surface treatment of the invention may include surface etching treatment.Wherein, the preferable electrochemical etching of surface etching treatment,
One or more of soda acid etching or oxidant etching, improve the binding force of metal and organic polymer.It is wider for application
The preferable soda acid etching of general aluminium material electrode terminal both using strong acid such as hydrochloric acid or can use highly basic such as hydrogen-oxygen
Change sodium to perform etching electrode terminal；Copper preferable for existing performance, nickel, stainless steel, can the materials electrode terminal such as valve alloy
It is preferred that the oxidizing solution such as sulfuric acid-hydrogen peroxide or persulfate solution etc. using moderate strength carry out oxidant etching.This
Invention can also include pre-processing before surface treatment to metal, pre-process the various places being known to the skilled person
Reason, generally comprises and is polished metal, cleaned, and improves cleannes etc..
Be additionally provided on the preferred tubular rivet of the present invention increase intensity reinforcing rib, reinforcing rib can be enhanced sealing material with
Bond strength between rivet, and the leakproofness of battery pack is improved in turn.It is distributed at equal intervals on electrode terminal for enhancing
With the process structure of sealant or insulating part associativity, which is equally spacedly distributed in the sheet-like plane of electrode terminal
On, and the cross section of penetrating electrode terminal.Process structure can be arbitrary shape and size.Wherein, conveniently of circular shape, side
Shape, diamond shape.
Preferred electrode terminal of the present invention is pellet electrode terminal, reduces internal resistance, is also beneficial to when forming battery pack, electrode
The welding of terminal can be realized by modes such as fittings, and contact internal resistance, and the electrode tip after welding can also be reduced between single battery
Son is not easy to loosen；In addition, battery pack of the invention uses plates as electrode terminal, do not need additionally to increase connector, it can
Directly to weld electrode terminal, it is thereby possible to reduce the weight and volume of battery pack.The thickness of electrode terminal can be according to battery
Type and preparation need depending on, specific embodiment according to the invention, the electrode terminal generally used with a thickness of 0.2-
20 millimeters, preferably 2.5 millimeters.The present invention is to further decrease the internal resistance of cell, increases electric current and heat conduction path, preferred battery lid
Board group part at least contains the electrode terminal there are two same polarity, the i.e. electric current of multiple electrodes terminal export same polarity, in order to reduce weldering
It connects, preferably the bottom of two or more electrode terminals, which can be connected, makes two U-shaped structures of electrode tip subgroup, i.e., will be multiple
The electrode terminal of same polarity is made of one structure, can be directly prepared by casting etc., be also beneficial to the assembly and preparation of battery.
Invention also provides the preparation methods of above-mentioned battery cover board assembly, comprising: is arranged on the surface of electrode terminal
Sealant and the surface that sealant first need to be arranged to electrode terminal, which carry out surface treatment, makes it be furnished with microcellular structure；By tubular rivet
On the cover board, the hollow space of tubular rivet is communicated with through-hole for setting；The electrode terminal for being equipped with sealant is passed through into tubular rivet
Hollow space and guarantee electrode terminal on sealant be at least partially in tubular rivet；Between sealant and tubular rivet
It is molded insulating part.The high temperature of injection molding keeps sealant and insulating part in a molten state, viscous state insulator material in high temperature item
The melting sealed layer surface fusion being in contact with it under part, can form fine and close connection with sealant after insulating part is cooling, general high
The temperature of temperature injection molding is preferably 340-390 DEG C.
The present invention be arranged preferably on the inner surface of tubular rivet sealant be included in it is surface treated have micropore
The inner surface coating sealing layer material of the tubular rivet of structure, is heated to sealant material molten, sintering forms sealant.
The mode that sealant is arranged can be using well known to a person skilled in the art various modes, such as injection molding, hot pressing, spray
Apply or be coated with etc., wherein injection molding or hot pressing directly can form sealant in metal surface, slightly above be sealed by heated mould temperature
The fusing point of layer material makes material viscous state, can sufficiently be combined with the metal surface after surface treatment by sealant after pressurization；?
Can using the conventional slurry of spraying or coating containing sealing layer material, after be heated to the melting of sealing layer material, be sintered shape
At fine and close sealant, spraying or coating can be using tools such as spray gun, hairbrush, galleys.
The glass transition temperature that the present invention preferably seals layer material is 260-280 DEG C, and the temperature of sintering is 320-390, time
It is 20-30 minutes.
Being described in further detail in conjunction with attached drawing to be
Embodiment 1
As shown in Figure 1, cover plate assembly includes electrode terminal 1, insulating part 2, tubular rivet 3, cover board 4 and sealant 5, cover board
4 are equipped with through-hole.The inner surface of tubular rivet 3 etches 20 minutes through concentrated hydrochloric acid soda acid, and forming surface has 10nm-1 μm
Micropore size distribution, 50nm-2 μm of mean pore hole depth microcellular structure, after the inner surface of tubular rivet 3 be coated with adjust
The nmp solution of the oligomer coating high molecular material PPS prepared, after dry, 340 degree of temperature are heated to the high molecular material of coating
Melting, rear sintering extremely form dense seal layer 5 in 30 minutes.By inner surface with sealant 5 tubular rivet 3 hollow space with
After through-hole communicates on cover board 4, with the integrally welded structure of cover board 4.Aluminum electrode terminal 1 is etched 15 minutes through concentrated hydrochloric acid soda acid
Time, forming surface, the micropore size with 10nm-1 μm is distributed, the microcellular structure of 50nm-2 μm of micropore hole depth, by electrode tip
The surface for the part that son 1 need to be tightly connected with cover board 4 is coated with the nmp solution of deployed oligomer coating high molecular material PPS,
After drying, 380 DEG C are heated to, melt polymer material, sintering 250min, will be with sealant 5 to dense seal layer 5 is formed
Electrode terminal 1 passes through the through-hole on tubular rivet 3 and cover board 4 then in 4 through-hole of tubular rivet 3 and cover board with 380 DEG C of temperature
Sealing high molecular material PPS is injected, injection molding forms insulating part 2 in the through-hole of tubular rivet 3 and cover board 4, at this time electrode tip
Son 1 is injection-moulded in insulating part 2.In order to enhance the linking intensity between electrode terminal 1 and insulating part 2, have on electrode terminal 1
Increase the process structure 11 with insulating materials adhesion strength.The process structure 11 is equally spacedly distributed in the upper of electrode terminal 1, and
The cross section of penetrating electrode terminal 2.It is additionally provided with liquid injection hole on cover board 4, for being passed through electrolyte into shell, if battery both ends
The battery of extraction electrode terminal only needs setting note night hole on cover board at one end.
Embodiment 2
Such as Fig. 2, cover plate assembly includes electrode terminal 1, insulating part 2, tubular rivet 3, cover board 4 and sealant 5, on cover board 4
Equipped with through-hole.The inner surface of tubular rivet 3 etches 20 minutes through concentrated hydrochloric acid soda acid, forms the micropore hole that surface has 50nm-2 μm
Diameter distribution, 200nm-2 μm of micropore hole depth microcellular structure, the inner surface of tubular rivet 3 is coated with deployed oligomer and is applied
The aqueous solution of cloth high molecular material PPS, it is dry, 320 DEG C of melt polymer materials are heated to, sintering 30min is fine and close close to being formed
Sealing 5.Two circle female seat slots 6 are carved on the surface for the part that aluminum electrode terminal 1 need to be tightly connected with cover board 4, through concentrated hydrochloric acid
Soda acid etch 15 minutes, formed surface with 50nm-2 μm micropore size be distributed, 200nm-2 μm of micropore hole depth it is micro-
Pore structure fills the aqueous solution of deployed oligomer coating high molecular material PPS, after dry, temperature in female seat slot 6
350 DEG C of melt polymer materials are heated to, sintering 25min to formation surrounds 1 liang of electrode terminal all annular dense seal layer 5.
Electrode terminal 1 with sealant is passed through the through-hole on tubular rivet 3 and cover board 4 then to lead in tubular rivet 3 and cover board 4
350 DEG C of temperature inject insulation high molecular material PPS in hole, and injection molding forms insulating part in the through-hole of tubular rivet 3 and cover board 4
2, electrode terminal 1 is injection-moulded in insulating part 2 at this time.In order to enhance the linking intensity between electrode terminal 1 and insulating part 2, electricity
There is the process structure 11 increased with sealing material adhesion strength on extreme son 1.The process structure 11 is equally spacedly distributed in electricity
Extremely son 1 is upper, and the cross section of penetrating electrode terminal 2.It is additionally provided with liquid injection hole on cover board 4, for being passed through electrolysis into shell
Liquid.
Preparation method of the invention, it is simple easily to realize, it is conducive to large-scale production.
The present invention also provides that a kind of sealing performance is more excellent, and security performance and output performance preferably contain above-mentioned lid simultaneously
The battery of board group part, including battery cover board assembly, shell, pole piece and electrolyte；Pole piece and electrolyte are encapsulated in shell and battery
In the sealing space that cover plate assembly is formed；Battery cover board assembly top electrode terminal one end is electrically connected with pole piece, and the other end stretches out close
Envelope is used as battery electrode outside space.Wherein electrode terminal includes anode and cathode terminals, anode and cathode terminals can directly with pole piece just
Negative electrode tab, which is connected, exports reversal, for example, positive terminal and anode pole piece can be welded, by negative terminal and cathode pole piece
Welding.Under preferable case, also there is positive pole ear on anode pole piece, positive pole ear is connect with positive terminal, therefore, anode pole piece
It is connect by positive pole ear with positive terminal；There is negative lug on cathode pole piece, negative lug is connect with negative terminal, because
This, cathode pole piece is connect by negative lug with negative terminal.Positive pole ear and negative lug can be various conductive materials, excellent
It is selected as one or more of copper, nickel and aluminium.Under preferable case, the part that positive pole ear is connected with positive terminal is identical
Material, the part that negative lug is connected with negative terminal are identical material.Electrode terminal and tab and tab and pole piece
Connection type preferably weld, such as supersonic welding, cold welding, Laser Welding, soldering, flash butt welding, friction welding (FW), electric resistance welding.
Structure, pole piece, shell, the electrolyte of positive/negative plate etc. are known to those skilled in the art, and details are not described herein.
The preferred shell of the present invention is the cuboid of both ends open, and both ends open is sealed by two battery cover board assemblies,
Anode, cathode respectively as battery are drawn, i.e. both ends extracted current of the electrode terminal from battery from the two sides of battery.
The present invention equally also provides a kind of battery pack using above-mentioned single battery, including above-mentioned single battery passes through series connection
Or compose in parallel, can by different ways by connect single battery electrode terminal come realize multiple single batteries it
Between serial or parallel connection, such as series connection can for positioned at the negative terminal of the single battery of one end and adjacent single battery just
Extreme son connection, or the positive terminal of the single battery positioned at one end are connect with the negative terminal of adjacent single battery, according to
It is secondary to analogize, opposite polarity a pair of electrodes terminal welding of two adjacent single batteries, the both ends of the battery pack obtained from
Two single batteries respectively there is an electrode terminal not connect with other electrode terminals, and the polarity phase of the two electrode terminals
Instead, as the positive and negative anodes of battery pack.Connection between electrode terminal can be overlap joint, docking or flange docking, can pass through fitting
Mode under preferable case, then is welded.Welding can be existing various welding methods, such as cold welding, supersonic welding, laser
Weldering, soldering, flash butt welding, friction welding (FW), electric resistance welding etc., it is preferred to use cold welding.It only needs to provide enough static pressure using cold welding
Power can realize reliable welding, and small, shockproof by weldering object calorific value in welding process and without relative displacement.
After the connection of multiple single batteries, battery pack can also be fixed according to existing method, for example, adjacent
Radiator structure is set between single battery, and the single battery after connection is fixed together using fastening structure, prevents monomer
It is mobile that position occurs between battery.
The performance of battery and battery pack of the invention is stablized, and is more avoided that extraneous irresistible factor to the performance of battery
Influence, ensure that the normal use of battery, meet the growth requirement of the prior art, in particular, provide a kind of function admirable
It can guarantee the automobile power cell of output stability energy and security performance.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (19)
1. a kind of battery cover board assembly, including cover board, tubular rivet, electrode terminal and insulating part；
The cover board is equipped with through-hole, and tubular rivet is arranged on the cover board, and the hollow space of the tubular rivet is communicated with through-hole；
The insulating part is located in tubular rivet；
The electrode terminal passes through insulating part, and tubular rivet clamps insulating part with insulated enclosure electrode terminal；
It is characterized in that, being additionally provided with sealant between the tubular rivet and insulating part, the sealant and insulating part are described
Fusion is generated in the forming process of insulating part；
It is furnished with microcellular structure on the face that the tubular rivet is contacted with sealant, the sealant and is furnished with the microcellular structure
The surface of tubular rivet combines, and the micropore size of the microcellular structure is 10nm~2 μm, and micropore hole depth is 20~2 μm.
2. battery cover board assembly according to claim 1, which is characterized in that also set between the electrode terminal and insulating part
There is sealant, the sealant and insulating part between the electrode terminal and insulating part generate in the forming process of the insulating part
Fusion；
Microcellular structure is furnished on the face that the electrode terminal is contacted with corresponding sealant, between the electrode terminal and insulating part
Sealant in conjunction with the surface of electrode terminal for being furnished with the microcellular structure.
3. battery cover board assembly according to claim 1, which is characterized in that the tubular rivet and cover board are integrated knot
Structure；
The insulating part forms spacer ring in cover board lower surface by cover plate through hole, and the insulating part passes through injection molding in tubular rivet
It is formed；
At least one female seat slot is provided on the part that the electrode terminal is located in tubular rivet.
4. battery cover board assembly according to claim 3, which is characterized in that the material of the insulating part and sealant difference
It is independent to be selected from perfluoroalkyl alkoxy copolymer, Poly-s 179, polyphenylene sulfide, modified polypropylene, ethylene propylene diene rubber, asphalt mixtures modified by epoxy resin
One or more of rouge, phenol aldehyde modified epoxy resin, bi-component epoxide-resin glue or hot melt adhesive.
5. battery cover board assembly according to claim 4, which is characterized in that be also dispersed with filler, institute in the sealant
It states filler and is selected from one or more of nanometer titanium dioxide, nano aluminium oxide and graphite powder.
6. battery cover board assembly according to claim 1, which is characterized in that be provided with increase intensity on the tubular rivet
Reinforcing rib；It is distributed at equal intervals on the electrode terminal for enhancing the technique knot with sealant or insulating part associativity
Structure.
7. battery cover board assembly according to claim 1, which is characterized in that the electrode terminal is pellet electrode terminal；
The battery cover board assembly at least contains the electrode terminal there are two same polarity.
8. a kind of preparation method of battery cover board assembly characterized by comprising
The face that sealant is arranged on the inner surface of tubular rivet and sealant first need to be arranged to tubular rivet is surface-treated
It is set to be furnished with microcellular structure；
Through-hole is set on the cover board, and on the cover board by tubular rivet setting, the hollow space of tubular rivet is communicated with through-hole；
Electrode terminal is passed through to the hollow space of tubular rivet；
It is molded insulating part between sealant and electrode terminal, fuses the sealant and the insulating part.
9. the preparation method of battery cover board assembly according to claim 8, which is characterized in that in the inner surface of tubular rivet
Upper setting sealant includes the inner surface coating sealing layer material in the surface treated tubular rivet with microcellular structure,
It is heated to sealant material molten, sintering forms sealant.
10. the preparation method of battery cover board assembly according to claim 9, which is characterized in that the coating sealant material
Material includes that the inner surface of the surface treated tubular rivet with microcellular structure is coated with oligomer high molecular material PPS
Aqueous solution or nmp solution.
11. the preparation method of battery cover board assembly according to claim 8, which is characterized in that preparation method further include:
Before being molded insulating part between sealant and electrode terminal, sealant is set on the surface of electrode terminal and first to electrode terminal
The surface that sealant need to be arranged, which carries out surface treatment, makes it be furnished with microcellular structure, the electrode terminal for being equipped with sealant is passed through hollow
The hollow space and the sealant on guarantee electrode terminal of rivet are at least partially in tubular rivet.
12. the preparation method of battery cover board assembly according to claim 11, which is characterized in that on the surface of electrode terminal
It includes in the surface of the surface treated electrode terminal with microcellular structure coating sealing layer material, heating that sealant, which is arranged,
To sealant material molten, sintering forms sealant.
13. the preparation method of battery cover board assembly according to claim 12, which is characterized in that the coating sealant material
Material includes the table for the part that the electrode terminal surface treated with microcellular structure needs to connect with the cover plate for sealing
The aqueous solution or nmp solution of face coating oligomer high molecular material PPS.
14. the preparation method of the battery cover board assembly according to any one of claim 9,10,12,13, feature exist
In, the sealing layer material includes polymer, the polymer be selected from perfluoroalkyl alkoxy copolymer, Poly-s 179, polyphenylene sulfide,
In modified polypropylene, ethylene propylene diene rubber, epoxy resin, phenol aldehyde modified epoxy resin, bi-component epoxide-resin glue or hot melt adhesive
One or more.
15. the preparation method of the battery cover board assembly according to any one of claim 9,10,12,13, feature exist
In the temperature of the sintering is 320-390 DEG C, and the time is 20-30 minutes；
The temperature of the injection molding is 340-390 DEG C.
16. the preparation method of the battery cover board assembly according to any one of claim 8 to 13, which is characterized in that institute
The material for stating electrode terminal is selected from one or more of copper, aluminium, nickel, gold, silver；The material of the tubular rivet be selected from copper, aluminium,
One or more of nickel, gold, silver；
The surface treatment includes surface etching treatment；The surface etching treatment is selected from electrochemical etching, soda acid etching or oxygen
One or more of agent etching.
17. a kind of single battery, including battery cover board assembly, shell, pole piece and electrolyte；
The pole piece and electrolyte are encapsulated in the sealing space that the shell and battery cover board assembly are formed；Battery cover board assembly
Top electrode terminal one end is electrically connected with pole piece, and the other end, which stretches out outside sealing space, is used as battery electrode, which is characterized in that the electricity
Pond cover plate assembly is battery cover board assembly described in any one of claim 1-7.
18. single battery according to claim 17, it is characterised in that: the shell is the cuboid of both ends open,
Both ends open by two battery cover board assembly sealings, draw from the two sides of battery by anode, cathode respectively as battery.
19. a kind of battery pack, the single battery as described in claim 17 or 18 by being connected in series or in parallel, the series connection or
Parallel connection is realized by the connection of electrode terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610109010.8A CN105742530B (en) | 2009-11-28 | 2009-11-28 | Battery cover board assembly, preparation method and single battery and battery pack |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610109010.8A CN105742530B (en) | 2009-11-28 | 2009-11-28 | Battery cover board assembly, preparation method and single battery and battery pack |
| CN200910188461.5A CN102082244B (en) | 2009-11-28 | 2009-11-28 | Battery cover assembly, its preparation method, single battery and battery pack |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910188461.5A Division CN102082244B (en) | 2009-11-28 | 2009-11-28 | Battery cover assembly, its preparation method, single battery and battery pack |
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| CN105742530B true CN105742530B (en) | 2019-02-01 |
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| DE102021205024A1 (en) | 2021-05-18 | 2022-11-24 | Robert Bosch Gesellschaft mit beschränkter Haftung | Lid assembly of a battery cell housing, method for its manufacture and use of such |
| WO2025025934A1 (en) * | 2023-08-01 | 2025-02-06 | 江苏懋略科技有限公司 | Battery cover plate and manufacturing method therefor, and battery and processing method therefor |
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| CN1319901A (en) * | 2001-01-14 | 2001-10-31 | 深圳市雄韬电源科技有限公司 | Cell terminal seal technology for structure |
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