CN203326011U - Electrode terminal, cover plate component and battery comprising cover plate component - Google Patents
Electrode terminal, cover plate component and battery comprising cover plate component Download PDFInfo
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- CN203326011U CN203326011U CN2013202890244U CN201320289024U CN203326011U CN 203326011 U CN203326011 U CN 203326011U CN 2013202890244 U CN2013202890244 U CN 2013202890244U CN 201320289024 U CN201320289024 U CN 201320289024U CN 203326011 U CN203326011 U CN 203326011U
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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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- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model provides an electrode terminal which comprises a polar column and polar caps positioned at one ends of the polar column, wherein enhancing parts and buffering structures are sequentially arranged around the polar column on the lower surfaces of the polar caps; the enhancing parts are positioned between the polar column and the buffering structures. Furthermore, the utility model also provides a cover plate component, wherein the cover plate component comprises cover plate bodies, insulation sealing pieces and the electrode terminals disclosed by the utility model. Moreover, the utility model also provides a battery. The battery adopts the cover plate component disclosed by the utility model. According to the electrode terminal disclosed by the utility model, the enhancing parts are arranged between the polar column and the buffering structures, so that the thickness of the polar caps can be increased to a certain extent, and the strength of the electrode terminals can be improved.
Description
Technical field
The battery that the utility model relates to a kind of electrode terminal, cover plate assembly and contains this cover plate assembly.
Background technology
Lithium ion battery belongs to the important a kind of product of new forms of energy, has the advantages such as pollution-free, that capacity is high, have extended cycle life.The fields such as current lithium-ion-power cell, lithium ion instrument battery, the network energy.Lithium ion battery is by positive plate, barrier film, negative plate coiling or after being stacked to pole piece, pole piece is put into to the cavity of battery container and seal cover board formation, and the inner electrolyte that injects obtains after the steps such as sealing changes into.And the seal cover board parts assembly indispensable as the lithium battery seal, its fail safe, sealing, resistance to ag(e)ing, insulating properties and space size of taking in battery etc. have very significance, cover plate assembly takies the certain cost of whole lithium battery in addition, provides its production efficiency, rate of finished products largely to reduce costs.
At present, lithium ion battery mainly adopts plastic injection-moulded reach sealing and insulation, cover plate main body is all carrying out injection moulding with anodal exit, negative pole exit and combining of integral type, so not only cause the moulding volume large, during injection moulding, occur being difficult to reaching each position injection moulding seal consistency fine, fraction defective is high, also low problem of production efficiency, and during injection moulding, metalwork need to pass through certain temperature, easily cause metalwork oxidized and contaminated, the integral cap plate material problems such as deliquescing that change.In addition, use be that injection molding plastic material plays the sealed insulation effect, the plastics ageing-resistant performance is not high, compactness is low, and is combustible material, useful life is shorter, security performance is lower.
Also have at present and study pottery as seal for the insulated enclosure of cover plate, but due to the difficult welding of pottery and frangiblely easily split, current application only is confined to the application of ceramic gasket, all also need other routines such as plastic cement seal member etc. for the sealing between cover plate and electrode terminal.When the ceramic seal part insulated enclosure that clamps between cover plate and electrode terminal, difference due to material, producing larger stress during welding makes the frangible ceramic seal part easily split cracked, unreliability, the uncontrollability of product have been increased, the security performance of lithium battery is reduced, technology difficulty increases simultaneously, and the battery fraction defective increases, and has affected its actual application and development.
For the problems referred to above, the battery cover board of buffer structure has appearred arranging between the polar cap of pottery and electrode terminal.But, due to the inside battery limited space, after adding buffer structure, the thickness of polar cap just significantly reduces.In the use procedure of battery, because polar cap is excessively thin, can cause the insufficient strength of electrode terminal.
The utility model content
The utility model is in order to solve the existing ceramic cover plate assembly that contains buffer structure, and polar cap thickness is too small, causes the technical problem of electrode terminal insufficient strength.Provide a kind of and can, when containing buffer structure, increase electrode terminal, the cover plate assembly that contains this electrode terminal and the battery that contains this cover plate assembly of polar cap thickness.
First order of the present utility model is to provide the polar cap that a kind of electrode terminal comprises pole and is positioned at pole one end; Wherein, on the polar cap lower surface, around described pole, be disposed with enhancing section and buffer structure, described enhancing section is positioned between pole and buffer structure.
Preferably, between enhancing section and pole, leave gap, the width in gap is that on correspondence position, between pole and buffer structure, the 0-1/4 of distance is doubly.
Preferably, enhancing section and polar cap are structure as a whole.
Further, enhancing section is the annular boss that is centered around the pole surrounding.
Preferably, the thickness of enhancing section is greater than 1/2 of polar cap thickness, is less than 3/2 of polar cap thickness.
Second order of the present utility model is to provide a kind of cover plate assembly, comprises cover board body, insulating sealer and electrode terminal; Wherein, electrode terminal is above-mentioned electrode terminal; Wherein, have the through hole that runs through cover board body on cover board body, the pole of electrode terminal is through described through hole extracted current; Be provided with insulating sealer between cover board body and electrode terminal, insulating sealer insulated enclosure cover board body; Buffer structure is between polar cap and insulating sealer.
Preferably, insulating sealer is the ceramic seal part, and ceramic seal part center is provided with through hole, and the pole of electrode terminal is through this through hole.
Preferably, above-mentioned cover plate assembly also comprises cover board connecting component, has the electrode hole that runs through cover board connecting component on cover board connecting component, and electrode terminal passes through the insulating sealer insulated enclosure through electrode hole and cover board connecting component; Above-mentioned cover board connecting component and cover board body are tightly connected.
In addition, utility model also provides a kind of battery, comprises cover plate assembly, battery container, pole piece and electrolyte, and pole piece and electrolyte level are in battery container, and cover plate assembly and battery container are tightly connected, and described cover plate assembly is above-mentioned cover plate assembly.
The electrode terminal that the utility model provides, can play good cushioning effect to cover plate assembly and the battery with this cover plate assembly by buffer structure, simultaneously, the design of enhancing section between pole and buffer structure, can increase to a certain extent the thickness of polar cap, improve the intensity of electrode terminal.
The accompanying drawing explanation
Fig. 1 is cover plate assembly cross-sectional view of the present utility model.
Fig. 2 is electrode terminal cross-sectional view of the present utility model.
The cover board connecting component perspective view that Fig. 3 is embodiment of the present utility model.
The insulating sealer perspective view that Fig. 4 is embodiment of the present utility model.
The electrode terminal perspective view that Fig. 5 is embodiment of the present utility model.
Embodiment
In order to make technical problem to be solved in the utility model, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
With reference to the accompanying drawings embodiment of the present utility model is elaborated.Herein, same reference numerals means the same composition part.And, should be appreciated that in description of the present utility model, " on ", the relative bearing term such as D score, mean each parts and the relative position of part in the cutaway view of the cover plate assembly shown in Fig. 1 thereof in cover plate assembly, so that each parts and part thereof are described; But and be not used in actual installation and the position relationship in lithium ion battery to these parts and part thereof and limited, it may be not identical with the actual installation situation, is not limited to scope of the present utility model.
Cover plate assembly of the present utility model is for the sealing of battery, more for example, for sealing, the especially high-power lithium ion battery of lithium ion battery: the sealing of lithium-ion-power cell, lithium-ion energy storage battery.Skilled in the art will recognize that lithium ion battery mainly comprises: the housing of at least one end opening, be positioned over the pole piece in housing and be contained in the electrolyte in housing.For fear of spilling of electrolyte, adopt cover plate assembly to be sealed the openend of housing.Wherein, housing is generally aluminum hull or box hat, for placing pole piece and holding electrolyte, opening can be an i.e. end opening, from battery one end extracted current, also can be two, be both ends open, from the two ends extracted current of battery, the position of opening is not restriction also, can be from the minor face opening, pole piece is directly vertically put into battery container, and the pole piece end that the opening exposed portions serve is extracted current also can be from long limit opening, the direct level of pole piece is put into battery container, the coiling arc-shaped edges that the opening exposed portions serve is the coiling pole piece.Described pole piece is formed by positive plate, barrier film, negative plate stacked or coiling successively, and the structure of pole piece and manufacture method can be passed through existing techniques in realizing, at this, do not do and repeat.
The present embodiment specifically describes cover plate assembly, and as shown in Figure 1, cover plate assembly comprises cover board body 3, electrode terminal and insulating sealer 4.
The inside battery electric current is drawn in electrode terminal and pole piece conducting, and number the utility model of electrode terminal is restriction not, according to the size of extracted current, is designed.Electrode terminal is generally the metallic conduction parts of connecting tab, can be directly and the tab welding arranged on pole piece realize conducting with pole piece, also can be by connecting brace, brace again with pole piece on the realization such as the tab welding that arranges and pole piece conduct.
As shown in Figure 1, electrode terminal of the present utility model comprises pole 1 and is positioned at the polar cap 2 of pole 1 one ends.Polar cap 2 and pole 1 can be one-body molded, can be also rear welding or cold-heading assembling.Material the utility model of polar cap 2 and pole 1 is restriction not, can adopt conventional material, for example, for positive electrode terminal, can be fine aluminium, aluminium alloy etc., and negative electrode terminal can be for fine copper etc.
Shape the utility model of polar cap 2 and pole 1 is restriction not, only being required to be mutual cross-coupled two parts gets final product, be generally vertical connection, it can be for example the connection of orthogonal rectangle sheet pole and rectangle sheet polar cap, according to actual conditions, assembled, in the placement figure of the present embodiment, electrode terminal can be regarded down " T " font as.The present embodiment specifically is described so that being shaped as of pole 1 is cylindrical, in the present embodiment, the diameter of pole 1 is 6.0 ± 0.05mm, the size of other parts in cover plate assembly, for example: the large I of electrode hole 51, through hole 41 is determined according to the diameter of pole 1.Shape the utility model of polar cap 2 preferably coordinates with the cylindrical of pole 1, and its orthographic projection is circular, for example can preferably, be greater than 1/4 of pole height for thicker cylindric, is less than 1/2 of pole height.In the present embodiment, highly be specially 2.5 ± 0.05mm, the bottom surface diameter is specially 8.8
0 -0.03Mm, can be also thinner circular metal plate etc., and thickness can be 0.8mm, and external diameter is greater than pole.The utility model is restriction not.
As shown in Fig. 1,2 and 5, polar cap 2 lower surfaces of the present utility model are provided with buffer structure 21.In accompanying drawing 2 and 5, the lower surface of polar cap 2 is provided with buffer structure 21, when electrode terminal and insulating sealer 4 welding, can slow down the stress between different materials, reduces the impact of welding on cover plate assembly; In the utility model, the lower surface of polar cap 2 is the one side that polar cap 2 is relative with insulating sealer 4.Buffer structure 21 the utility model are restriction not, general need be played buffering effect and get final product, general only need a support component be set at polar cap 2 and 4 of insulating sealers and get final product, for example can for the integrated boss of polar cap 2, the number of boss and shape be restriction not, also can be at the one-body molded honeycomb metallic object with buffering effect of polar cap 2 lower surfaces, the honeycomb metallic object can be sheet etc.The utility model is preferably support ring 211, make the ring-type support rim on the lower surface of polar cap 2, shape the utility model of support ring 211 is not restriction also, only being required to be ring bodies gets final product, it can be for example annulus, it can be also square ring, hexahedron ring etc., external diameter the utility model of ring-type support rim is restriction not, can be greater than the external diameter of polar cap 2, also can be less than the external diameter of polar cap 2, the internal diameter of support ring 211 of the present utility model can be more than or equal to the external diameter of polar cap 2, now between general polar cap 2 and supporting ring 211, contains and is provided with the part connecting surface.The external diameter of support ring 211 also can be less than the external diameter of polar cap 2, the ring-type support rim can combine with the pole 1 of polar cap 2 lower surfaces, is coated on part pole surface, also can be not and pole 1 combination, its internal diameter is greater than pole 1 external diameter, and there is certain gap in 1 of pole.The ring thickness of supporting ring 211 is not restriction also, be generally corresponding clamping insulating sealer ring thickness 1/3 ~ 3/4,1/4 ~ 1/2 of the height of the insulating sealer that the height of boss can corresponding clamping, the present embodiment is 8.8 for external diameter
0 -0.03The polar cap 21 of mm, can from outward flange 0.8 ± 0.05mm place, extend at its lower surface is highly 1.0 ± 0.05mm, and external diameter is 9.2 ± 0.05mm, and internal diameter is that 8.2 ± 0.05mm is the annular boss that thickness is 1.0 ± 0.05mm.Buffer structure 21 can be one-body molded with polar cap 2, makes this structure when making polar cap 2, buffer structure is welded on to polar cap 2 lower surfaces after can being also.
Improvements of the present utility model are also to be provided with the enhancing section 22 for increasing polar cap thickness on the lower surface of polar cap 2.In accompanying drawing 2, be to be provided with the enhancing section 22 for increasing polar cap thickness on the lower surface of polar cap 2, can increase to a certain extent the thickness of polar cap 2, and then improve the intensity of electrode terminal, increase the electrode terminal fail safe in use with buffer structure 21.Enhancing section 22 the utility model are restriction not, as long as generally be arranged between pole 1 and buffer structure 21, increase the thickness that is positioned at polar cap 2 parts between the two and get final product, and can be for example and the integrated boss of polar cap 2 that the number of boss and shape be restriction not.
Position relationship between enhancing section 22 and pole 1 does not limit yet, enhancing section 22 can and pole 1 between leave gap, also can link together with pole 1.The width that leaves Shi，Gai gap, gap is that on correspondence position, between pole and buffer structure, the 0-1/4 of distance is doubly.Here, the width in gap is not done concrete restriction, and according to different cover plate assembly sizes, those skilled in the art can do corresponding design.Generally, preferably enhancing section 22 is made of one structure with polar cap 2.When polar cap 2 and pole 1 are structure as a whole, when making electrode terminal, enhancing section 22 also directly is made of one to structure, ease of assembly and subsequent treatment.
In addition, the thickness of enhancing section 22 is preferably greater than 1/2 of polar cap 2 thickness, is less than 3/2 of polar cap 2 thickness.Certainly, be here a kind of preferably; Those skilled in the art can select suitable enhancing section 22 thickness according to the thickness of polar cap 2 and the use state of battery reality, as long as can play the effect needed.
Simultaneously, between above-mentioned enhancing section 22 and buffer structure 21, leave gap, in the welding process of electrode terminal, this gap can prevent from causing because of the expanded by heating of enhancing section 22 that buffer structure 21 is stressed excessively even breaks.In the present embodiment, enhancing section 22 is cirque structure with buffer structure 21, so its gap is also annular.To the shape in this gap, the utility model does not limit, and according to concrete enhancing section 22, with the shape of buffer structure 21, determines.Preferably, the 1/3-2/3 that the gap width between this enhancing section 22 and buffer structure 21 is distance between pole 1 and buffer structure 21; Perhaps the gap width between this enhancing section 22 and buffer structure 21 is 1-2mm, and enhancing section 22 and the gap width between buffer structure 21 that the present embodiment adopts are 1mm.Leave so wide gap between enhancing section 22 and buffer structure 21, can play better anti-expansion effect.Gap width between above-mentioned enhancing section 22 and buffer structure 21 is a kind of preferred, and is not specifically limited; In different electrode terminals, can, according to welding temperature, material expansion complexity etc. concrete condition, select suitable gap width.
Above-mentioned is of the present utility model a kind of preferred, can better help welding; Certainly, also can not stay the width in gap or gap not within above-mentioned scope, these can determine according to specific circumstances, at this, do not do restriction.
In the utility model, as shown in Fig. 2 or Fig. 5, enhancing section 22 is preferably the annular boss 221 that is centered around pole 1 surrounding, and this annular boss 221 links together with pole 1, and preferably and polar cap 2 one-body molded.
In the selection of enhancing section 22 materials, preferably the material identical or approximate with polar cap 2, be conducive to when enhancing section 22 combined with the one-body molded or later stage of polar cap 2 better fit together.
The utility model also can be processed the outer face of polar cap 2, for example at the outer face of polar cap periphery, contains the first lead angle.Be convenient to be connected with external loading or be connected with electrode connecting piece, more easily be fit in the installing hole of electrode connecting piece and weld, simultaneously as also can prevent the solder diffusing for soldering processes, concentrated solder is at the soldering opening place.
Number the utility model of cover board body 3 is restriction not, according to the opening number of battery container, designed, shape the utility model of cover board body 3 is not restriction also, according to the shape of the opening of battery container, is designed, coordinate housing, for example can for circle also can be for square.Size for example thickness can be 2.0mm.Material the utility model of cover board body is not restriction also, such as being selected from fine aluminium, aluminium alloy etc.On cover board body 3, other structure example can be passed through existing techniques in realizing as liquid injection port etc. with manufacture method, at this, do not do and repeat.
Be provided with insulating sealer 4 between cover board body 3 and electrode terminal, the described cover board body 3 of described insulating sealer 4 insulated enclosure, buffer structure 21 is between polar cap 2 and insulating sealer 4.Insulating sealer 4 the utility model are restriction not, can be for example moulding, and as shown in Figure 4, the utility model preferably adopts ceramic seal part 42 insulated enclosures, and wherein, ceramic seal part 42 centers are formed with through hole 41, as shown in Figure 4.The pole 1 of electrode terminal is through above-mentioned through hole 41,3 clamping ceramic seal part 42 insulated enclosures of pole 1 and cover board body.In the present embodiment, through hole 41 internal diameters of ceramic seal part 42 mate with pole 1 external diameter of the electrode terminal that passes it, the external diameter that can be a bit larger tham pole 1, make between through hole 41 and pole 1 and form gap, to avoid ceramic seal part 42 expanded by heating, be less than the external diameter of polar cap 2, thereby guarantee to wear pole 1, can make again polar cap 2 be connected on ceramic seal part 42, thereby make between ceramic seal part 42 and electrode terminal to have good sealing.
Shown in Fig. 4, ceramic seal part 42 comprises that sealing 421 and external diameter are greater than the connecting portion 422 of sealing 421, cover board body 3 for conventional through hole, sealing 421 generally is arranged in through hole, be clamped between pole 1 and cover board body 3, connecting portion 422 generally is clamped between buffer structure 21 and cover board body 3, and two surfaces are connected with cover board body 3 with buffer structure 21 respectively.In the present embodiment, through hole contains the mounting groove that protrudes cover board body 3 surfaces, the sealing 421 of ceramic seal part 42 can be arranged in electrode hole 51, two surfaces of connecting portion 422 can be connected with buffer structure 21 with mounting groove bottom lower surface respectively, connecting portion 422 is arranged in mounting groove, be fastened on mounting groove inside, more easily welding, connect more firm, wherein, connecting portion 422 can all be positioned at through hole, height is lower than cover board body 3 thickness, also can partly be positioned at through hole, height is higher than cover board body 3 thickness, perhaps identical with cover board body 3 thickness, the utility model is restriction not, in the present embodiment, the aperture of through hole is more than or equal to the external diameter of connecting portion 422, the external diameter of the aperture fitted seal section 421 of electrode hole 51, be less than the external diameter of connecting portion 422, make cover plate assembly there is good sealing.Connecting portion 32 can adopt with being connected of mounting groove bottom the method for attachment that well known to a person skilled in the art various potteries and metal, such as adopting metal promoted solder flux etc., for example be specifically as follows between the lower surface of connecting portion 422 and mounting groove bottom and be provided with the first metal solder layer (not shown), wherein, the first metal solder layer is by forming by Welding again and between the lower surface of mounting groove bottom after being metallized in connecting portion 422 surfaces, metallization can adopt ceramic surface metallization technique common in prior art, for example can carry out the manganese molybdenum to ceramic surface.Under preferable case, ceramic metallization also completes can proceed the element that nickel plating, aluminium etc. do not affect welding, to strengthen the mechanical strength of welding position and base material to be welded.Can also be preferably between the lower surface of connecting portion 422 and mounting groove bottom by the transition metal ring is set, the mechanical stress that the transition metal ring plate produces for buffering or while reducing soldering.The metal material that the transition metal ring plate can adopt common various easy aluminum or aluminum alloy to be welded, such as adopting fine aluminium, aluminium alloy etc.The maximum outside diameter of transition metal ring plate can be identical with the external diameter of the connecting portion 422 of ceramic seal part 42, also can be different, and the utility model is not particularly limited.Welding is those skilled in the art's welding procedures commonly used, in the utility model, repeats no more.By Welding, can will make welding node place and base material to be welded form integrative-structure, structure is welded into one between mounting groove and ceramic seal part 42, guarantee on the one hand its sealing intensity, reduce on the other hand the interface difference of material, thereby reduce the internal resistance of cover plate assembly, reduce the battery-heating amount.
As shown in Figure 2 and Figure 4, buffer structure 21 can adopt with being connected also of connecting portion 422 outer faces the method for attachment that well known to a person skilled in the art various potteries and metal, such as adopting welding material of metal etc., for example be specifically as follows and be provided with the second metal solder layer (not shown) between buffer structure and connecting portion 422 outer faces, the second metal solder layer forms by Welding again and between buffer structure after being metallized in connecting portion 422 outer faces.Wherein, the first metal solder layer forms by Welding again and between the lower surface of buffer structure after the connecting portion end face is metallized, metallization can adopt ceramic surface metallization technique common in prior art, for example can carry out the manganese molybdenum to ceramic surface.Under preferable case, ceramic metallization also completes can proceed the element that nickel plating, aluminium etc. do not affect welding, to strengthen the mechanical strength of welding position and base material to be welded.Can also preferably between buffer structure and connecting portion 422 outer faces, also be provided with the transition metal ring plate, the mechanical stress that the transition metal ring plate produces when being used for buffering or reducing soldering.The transition metal ring plate can adopt common various easily and the metal material that welded of copper or copper alloy, aluminum or aluminum alloy, for example can adopt kovar alloy, copper or copper alloy, aluminum or aluminum alloy.The maximum outside diameter of transition metal ring plate can be identical with the external diameter of the connecting portion 422 of ceramic seal part 42, also can be different, and the utility model is not particularly limited.More preferably, in situation, the element that nickel plating, aluminium etc. do not affect welding also can be carried out in transition metal ring plate surface, to strengthen the mechanical strength of welding position and base material to be welded.Welding is those skilled in the art's welding procedures commonly used, in the utility model, repeats no more.Pass through Welding, can will make welding node place and base material to be welded form integrative-structure, it is the structure that is welded into one between the polar cap 2 of electrode terminal and ceramic seal part 42, guarantee on the one hand its sealing intensity, reduce on the other hand the interface difference of material, thereby reduce the internal resistance of cover plate assembly, reduce the battery-heating amount.
Ceramic seal part 42 can be in aluminium oxide ceramics ring, zirconia ceramics ring, aluminium nitride ceramics ring, boron nitride ceramics ring, silicon nitride ceramics ring, aluminium oxide and zirconic composite ceramics ring a kind of, preferential oxidation aluminium ceramic ring, aluminium oxide and zirconic composite ceramics ring, in the present embodiment, the aperture of the through hole that ceramic seal part middle part forms is ￠ 6.0 ± 0.1mm, and thickness is 2.5 ± 0.1mm.The decay resistance of ceramic seal part is very good, can not corroded by electrolyte, can guarantee the useful life of lithium ion battery; And impact strength, the thermal shock resistance of ceramic seal part are better than vitreum, make the structure of cover plate assembly more stable, sealing effectiveness is better; It is worth mentioning that, adopt the ceramic seal part as the sealing-in medium, compared to adopting ceramic wafer, its thickness is thicker, and thermal shock resistance and thermal circulation performance are better.
As shown in Figure 1, cover plate assembly can also contain electrode connecting piece 6, electrode terminal is by electrode connecting piece 6 and pole piece conducting, extracted current, electrode connecting piece 6 is provided with the installing hole of installing electrodes terminal, the size of installing hole and position the utility model be restriction not, according to the electrode terminal of installing, designed, the installation of electrode terminal can be welded in this installing hole for it being extended to ceramic seal part 42, can be also that the polar cap of electrode terminal 2 parts are welded in this installing hole, installing hole can be also can not connecting of through electrode brace 6, according to the part of the electrode terminal of its connection, designed.Be generally and prevent short circuit, 6 of cover board body 3 and electrode connecting piece need insulation processing, for example can between them, put into sealing ring 7, and sealing ring 7 of the present utility model refers to the seal member with sealing effectiveness, to the not restriction of its shape.The present embodiment is specifically as follows the lower end that the sealing ring of O type 7 is set in to the ceramic seal part, and the lower end of ceramic seal part is coated in sealing ring 7, and sealing ring 7 can be used PP or PE plastic rubber material etc. to be insoluble to the material of electrolyte.
As shown in Figures 2 and 3, the cover plate assembly that the utility model provides also comprises a cover board connecting component 5, has the electrode hole 51 that runs through cover board connecting component 5 on cover board connecting component 5, and electrode terminal is connected with cover board connecting component 5 and insulated enclosure through electrode hole 51.Cover board connecting component 5 is for being tightly connected with cover board body 3, the utility model is mainly ceramic seal part 42, electrode terminal and cover board body 3 is sealedly connected, after first electrode terminal, ceramic seal part 42, cover board connecting component 5 being made to integrative-structure, by cover board connecting component 5 and cover board body 3 welding, realize the insulated enclosure of cover plate assembly again.The less parts of the general employing of cover board connecting component 5, shape to cover board connecting component 5, structure and position the present invention be restriction not, such as can be at the upper surface of cover board body 3 or lower surface etc., adopt bow-shaped structural etc., the electrode terminal of structure will be made of one, ceramic seal part 42, cover board connecting component 5 is connected with cover board body 3, when now general electrode terminal is through the through hole on cover board body 3, electrode terminal also to clamp the steadiness of insulating sealer 4. in order strengthening to be connected to be arranged with 3 of cover plate main bodies, and simplification technique etc., the preferred cover board connecting component 5 of the present invention is arranged in the through hole of cover board body 3, better sealing-in.
Number the utility model of the electrode hole 51 of cover board connecting component 5 is restriction not, for example can be designed according to the number of electrode terminal, for example a large cover board connecting component 5 can only be set in the through hole of cover board body 3, electrode hole with extraction electrode terminal equal number is set on cover board connecting component 5, then each electrode terminal is through an electrode hole extracted current, and 5 of the electrode terminal of at least one polarity and cover board connecting components are provided with insulating sealer.Also can design the number of cover board connecting component 5 according to the number of electrode terminal, only have an electrode hole in cover board connecting component 5, or in a plurality of cover board connecting component 5, the electrode hole number of each cover board connecting component 5 is also different.
The material of cover board connecting component 5 is generally selected the consistent material of cover board body 3.Can be for example aluminium alloy 3003, fine aluminium, not only weld more conveniently, and guarantee the intensity of cover plate assembly.
Simultaneously, the utility model also provides a kind of battery, and this battery comprises cover plate assembly, battery container, pole piece and electrolyte, pole piece and electrolyte level are in battery container, cover plate assembly and battery container are tightly connected, wherein, and the cover plate assembly that cover plate assembly provides for the utility model.The structure of battery, form, be assembled into well-known to those skilled in the art, the battery that the utility model provides, the cover plate assembly that has adopted the utility model to provide, other do not repeat them here similarly to the prior art.
The cover plate assembly that the utility model provides and the battery that contains this cover plate assembly, all designs on the basis of above-mentioned electrode terminal; According to different requirements, above-mentioned electrode terminal is done to accommodation, be used on cover plate assembly, and then make the battery needed.
Those skilled in the art easily know; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.Protection range of the present utility model is determined by claims.
Claims (9)
1. an electrode terminal, is characterized in that, comprises pole and be positioned at the polar cap of pole one end; Be disposed with enhancing section and buffer structure around described pole on described polar cap lower surface, described enhancing section is positioned between pole and buffer structure.
2. electrode terminal according to claim 1, is characterized in that, between described enhancing section and pole, leaves gap, and the width in described gap is that on correspondence position, between pole and buffer structure, the 0-1/4 of distance is doubly.
3. electrode terminal according to claim 1, is characterized in that, described enhancing section and polar cap are structure as a whole.
4. electrode terminal according to claim 1, is characterized in that, described enhancing section is the annular boss that is centered around the pole surrounding.
5. electrode terminal according to claim 1, is characterized in that, the thickness of described enhancing section is greater than 1/2 of polar cap thickness, is less than 3/2 of polar cap thickness.
6. a cover plate assembly, is characterized in that, comprises cover board body, insulating sealer and electrode terminal; Described electrode terminal is the described electrode terminal of claim 1-5 any one;
Have the through hole that runs through cover board body on described cover board body, the pole of described electrode terminal is through described through hole extracted current;
Be provided with insulating sealer between described cover board body and electrode terminal, the described cover board body of described insulating sealer insulated enclosure;
Described buffer structure is between polar cap and insulating sealer.
7. cover plate assembly according to claim 6, is characterized in that, described insulating sealer is the ceramic seal part, and described ceramic seal part center is provided with through hole, and the pole of described electrode terminal is through described middle through hole.
8. cover plate assembly according to claim 6, it is characterized in that, described cover plate assembly also comprises cover board connecting component, has the electrode hole that runs through cover board connecting component on described cover board connecting component, and described electrode terminal passes through the insulating sealer insulated enclosure through electrode hole and cover board connecting component; Described cover board connecting component and cover board body are tightly connected.
9. a battery comprises: cover plate assembly, battery container, pole piece and electrolyte, and pole piece and electrolyte level are in battery container, and cover plate assembly and battery container are tightly connected; Described cover plate assembly is the described cover plate assembly of claim 6-8 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202890244U CN203326011U (en) | 2013-05-24 | 2013-05-24 | Electrode terminal, cover plate component and battery comprising cover plate component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202890244U CN203326011U (en) | 2013-05-24 | 2013-05-24 | Electrode terminal, cover plate component and battery comprising cover plate component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203326011U true CN203326011U (en) | 2013-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202890244U Expired - Lifetime CN203326011U (en) | 2013-05-24 | 2013-05-24 | Electrode terminal, cover plate component and battery comprising cover plate component |
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| CN (1) | CN203326011U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105633309A (en) * | 2016-02-03 | 2016-06-01 | 深圳市三讯电子有限公司 | Electrode terminal, power battery cover plate assembly and power battery |
| CN105702887A (en) * | 2016-02-03 | 2016-06-22 | 深圳市三讯电子有限公司 | Cover board assembly for power battery and power battery |
| CN107732042A (en) * | 2017-09-26 | 2018-02-23 | 惠州市亿纬新能源研究院 | A kind of block and the lithium battery comprising the block |
-
2013
- 2013-05-24 CN CN2013202890244U patent/CN203326011U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105633309A (en) * | 2016-02-03 | 2016-06-01 | 深圳市三讯电子有限公司 | Electrode terminal, power battery cover plate assembly and power battery |
| CN105702887A (en) * | 2016-02-03 | 2016-06-22 | 深圳市三讯电子有限公司 | Cover board assembly for power battery and power battery |
| CN107732042A (en) * | 2017-09-26 | 2018-02-23 | 惠州市亿纬新能源研究院 | A kind of block and the lithium battery comprising the block |
| CN107732042B (en) * | 2017-09-26 | 2021-02-05 | 惠州市亿纬新能源研究院 | Nut cap and lithium battery comprising same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131204 |