CN104752674B - Electrode terminal, battery cover plate assembly with same, battery and battery pack - Google Patents

Electrode terminal, battery cover plate assembly with same, battery and battery pack Download PDF

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Publication number
CN104752674B
CN104752674B CN201310753725.3A CN201310753725A CN104752674B CN 104752674 B CN104752674 B CN 104752674B CN 201310753725 A CN201310753725 A CN 201310753725A CN 104752674 B CN104752674 B CN 104752674B
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China
Prior art keywords
terminal
leading
connection ring
ring
annular
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CN201310753725.3A
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Chinese (zh)
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CN104752674A (en
Inventor
何昱臣
李银玲
吴强
汪鲁建
刘斯源
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BYD Co Ltd
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BYD Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • 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 of a single cell or a single battery
    • H01M50/147—Lids or covers
    • 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

Abstract

The invention discloses an electrode terminal, a battery cover plate assembly with the same, a battery and a battery pack. The electrode terminal comprises a leading-out terminal, a connecting ring and a transition welding layer, wherein a flange is arranged on the outer circumferential surface of the leading-out terminal; the connecting ring and the leading-out terminal are made from different metal materials, the connecting ring sleeves the upper end part of the leading-out terminal and is located on the flange, a welding slot is formed between the connecting ring and the leading-out terminal, and a lug boss located between the upper surface of the flange and the lower end face of the connecting ring is arranged on at least one of the lower end face of the connecting ring and the upper surface of the flange; and the transition welding layer is arranged between the leading-out terminal and the connecting ring and is respectively welded with the connecting ring and the leading-out terminal. When the electrode terminal according to the embodiment of the invention is welded, redundant solders and residues can be collected in the welding slot for easily cleaning the welding residues and avoiding the solders from overflowing to other welding surfaces of the electrode terminal to influence the welding, and thus the cleaning process efficiency and the cleaning effect of the electrode terminal are improved.

Description

Electrode terminal, the battery cover board assembly with it, battery and set of cells
Technical field
The present invention relates to cell art, more particularly, to a kind of electrode terminal, the battery with this electrode terminal Cover plate assembly, battery and set of cells.
Background technology
Electrokinetic cell electric automobile is the vitals of electric automobile, there is material impact to electric automobile performance.Battery Group is by composition in series or in parallel with each other for multiple cells, the performance to set of cells of the quality of connection between cell Have a significant impact.
Content of the invention
The application is based on inventor, problems with and true discovery and understanding to be made：Single being connected with connector During body battery, the bonding strength between the electrode terminal of cell and power connections has very big shadow to the performance of set of cells Ring, because the positive terminal of cell and negative terminal are made up of different metal, for example, the positive terminal of battery is generally by aluminum Make, the negative terminal of battery is generally made of copper, generally copper aluminium welding is carried out using blast weldering, stored energy welding and friction welding (FW), by Different in the welding fusing point of copper aluminum, not prison welding easily occurs when copper aluminium phase connects and leans on, produce welding gap, weld strength Low, salt fog resistance is poor, and contact resistance is big, the performance of impact set of cells, and, the high cost of above-mentioned welding method, complex process, Application is restricted.Accordingly, there exist improved demand.
It is contemplated that at least solving one of above-mentioned technical problem to a certain extent.
For this reason, it is an object of the present invention to proposing a kind of electrode terminal, using this electrode terminal, connecting monomer electricity Can avoid during pond welding different metal, and be connected firmly, stability high.
Another object of the present invention is to proposing a kind of battery cover board assembly with above-mentioned electrode terminal.
A further object of the present invention is to propose a kind of battery with above-mentioned battery cover board assembly.
Another object of the present invention is to propose two kinds of set of cells with above-mentioned electrode terminal.
The electrode terminal of embodiment according to a first aspect of the present invention, including：Leading-out terminal, the outer peripheral face of described leading-out terminal It is provided with flange；Connection ring, described connection ring and described leading-out terminal are made up of different metal materials, and described connection ring is enclosed within The upper end of described leading-out terminal and be located at described flange above, be provided with weld groove between described connection ring and described leading-out terminal, At least one of upper surface of the lower surface of described connection ring and described flange be provided with upper surface positioned at described flange with Boss between the lower surface of described connection ring；And graded seal layer, described graded seal layer be located at described leading-out terminal and Weld between described connection ring and respectively with described connection ring and described leading-out terminal.
Electrode terminal according to embodiments of the present invention, by arranging weld groove between connection ring and leading-out terminal, during welding, Weld groove can assemble unnecessary solder and residue, it is to avoid solder is excessive, so that welding residue is easily cleaned, it is to avoid solder spills into Other solders side of electrode terminal and affect weld, improve cleaning efficiency and the cleaning performance of electrode terminal, and Ensure that the sealing of welding between connection ring and leading-out terminal, thus improve the manufacturability of electrode terminal and producing effect Rate, reduces cost.
Meanwhile, by between leading-out terminal and connection ring arrange graded seal layer, and by graded seal layer respectively with draw Go out terminal and connection ring welding to realize the connection of leading-out terminal and connection ring it is ensured that connecting between leading-out terminal and connection ring Fastness and stability, in welding process, graded seal layer can also reduce solder and flow on leading-out terminal, it is to avoid solder Temperature too high and lead to leading-out terminal deform, improve the safety of electrode terminal.
In addition, it is upper positioned at flange by setting at least one of upper surface and lower surface of connection ring in flange Boss between surface and the lower surface of connection ring so that the upper surface of flange can be spaced apart with the lower surface of connection ring and not Completely attach to, thus effectively reducing bonding area, reducing the welding stress that flange is subject to, it is to avoid flange deforms, making The sealing of electrode terminal and fixing improve.
It is additionally, since leading-out terminal and connection ring to be made up of different metal materials, therefore, use this electrode tip connecting During the cell of son, the welding between different metal material, the negative pole for example becoming for copper can be avoided when this metal terminal During terminal, connection ring can be made of aluminum, and the power connections such that it is able to be formed from aluminium connect the electrode terminal of cell, Connection ring and power connections weld, it is to avoid the welding between copper and aluminum, increased bonding strength.
The battery cover board assembly of an embodiment according to a second aspect of the present invention, including：Main body cover plate, described main body cover plate It is provided with fairlead；There is the insulating sealer of through hole；Electrode terminal, described electrode terminal passes through described through hole and described extraction Hole, described electrode terminal is the electrode terminal according to above-described embodiment.
The battery cover board assembly of another embodiment according to a second aspect of the present invention, including：Main body cover plate, described body cover Plate is provided with the first fairlead and the second fairlead；First insulating sealer with first through hole and the with the second through hole Two insulating sealers；Positive terminal and negative terminal, described positive terminal passes through described first through hole and described first fairlead, Described negative terminal passes through described second through hole and described second fairlead, and described negative terminal is according to above-described embodiment Electrode terminal, and the connection ring of described negative terminal is made up of identical metal material with described positive terminal.
The battery cover board assembly of another embodiment according to a second aspect of the present invention, including：Main body cover plate, described body cover Plate is provided with the first fairlead and the second fairlead；First insulating sealer with first through hole and the with the second through hole Two insulating sealers；Positive terminal and negative terminal, described positive terminal passes through described first insulating sealer and described first Fairlead, described negative terminal passes through described second insulating sealer and described second fairlead, according to described positive terminal Electrode terminal described in above-described embodiment, and the connection ring of described positive terminal and described negative terminal are by identical metal material Make.
The battery of embodiment according to a third aspect of the present invention, including the battery cover board assembly according to above-described embodiment.
The set of cells of an embodiment according to a fourth aspect of the present invention, including：Multiple batteries, described battery has positive terminal Son and negative terminal, wherein said negative terminal is to be electrode terminal according to above-described embodiment according to claim；Dynamic Power connection sheet, the adjacent described battery of described power connector piece electrical connection, described power connector piece, described negative pole connection ring and institute State positive terminal to be made up of identical metal material.
The set of cells of another embodiment according to a fourth aspect of the present invention, including：Multiple batteries, described battery has positive pole Terminal and negative terminal, wherein said positive terminal is the electrode terminal according to above-described embodiment；Power connector piece, described The adjacent described battery of power connector piece electrical connection, described power connector piece, the connection ring of described positive terminal and described negative pole Terminal is made up of identical metal material.
The additional aspect of the present invention and advantage will be set forth in part in the description, and partly will become from the following description Obtain substantially, or recognized by the practice of the present invention.
Brief description
The above-mentioned and/or additional aspect of the present invention and advantage will become from reference to the description to embodiment for the accompanying drawings below Substantially and easy to understand, wherein：
Fig. 1 is the structural representation of electrode terminal according to an embodiment of the invention；
Fig. 2 is the structural representation of the connection ring of electrode terminal according to an embodiment of the invention；
Fig. 3 is the structural representation of electrode terminal in accordance with another embodiment of the present invention；
Fig. 4 is the structural representation of the electrode terminal according to another embodiment of the present invention；
Fig. 5 is the structural representation of the electrode terminal according to further embodiment of the present invention；
Fig. 6 is the structural representation of electrode terminal according to an embodiment of the invention；
Fig. 7 is the structural representation of connection ring in Fig. 6；
Fig. 8 is the structural representation of battery cover board assembly according to an embodiment of the invention；
Fig. 9 is the structural representation of battery cover board assembly in accordance with another embodiment of the present invention；
Figure 10 is the partial structural diagram in Fig. 9；
Figure 11 is the structural representation of the battery cover board assembly according to another embodiment of the present invention；
Figure 12 is the partial structural diagram in Figure 11；
Figure 13 is the profile of the cover plate of battery cover board assembly according to an embodiment of the invention；
Figure 14 is the top view of the cover plate of battery cover board assembly according to an embodiment of the invention；
Figure 15 is the partial structural diagram of Figure 12；
Figure 16 is the structural representation of set of cells according to embodiments of the present invention.
Reference：
Electrode terminal 100；Battery cover board assembly 200 (200 ')；Set of cells 300；
Leading-out terminal 10；Upper end 11；Flange 12；First annular flat part 121；Annular rake 122；Second annular flat Straight portion 123；Leading-out terminal lower end 13；Weld groove 14；
Connection ring 20；Centre bore 21；Top hole section 211；Bottom hole section 212；
Graded seal layer 30；Ring part 31；Sleeve part 32；Top cover 33；
Attachment cap 40；
Boss 50；
Insulating sealer 60；Through hole 61；Upper hole section 611；Middle hole section 612；Lower hole section 613；Annular groove 6131；
First insulating sealer 60a；Second insulating sealer 60b；First through hole 61a；Second through hole 61b；Upper hole section 611a(611b)；Middle hole section (612b)；Lower hole section 613a (613b)；
First annular video disc 70a；Second ring disk 70b；Upper flange 71a (71b)；Lower flange 72a (72b)；
Main body cover plate 80 (80a)；Fairlead 81；First fairlead 81a；Second fairlead 81b；Upper extraction hole section 811a (811b)；Lower extraction hole section 812 (812b)；
Power connector piece 90；Installing hole 91.
Specific embodiment
Embodiments of the invention are described below in detail, the example of described embodiment is shown in the drawings, wherein from start to finish The element that same or similar label represents same or similar element or has same or like function.Below with reference to attached The embodiment of figure description is exemplary it is intended to be used for explaining the present invention, and is not considered as limiting the invention.
In describing the invention it is to be understood that term " " center ", " longitudinal ", " horizontal ", " length ", " width ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", the instruction such as " outward " Orientation or position relationship are based on orientation shown in the drawings or position relationship, be for only for ease of the description present invention and simplification is retouched State, rather than instruction or the hint device of indication or element must have specific orientation, with specific azimuth configuration and operation, Therefore it is not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or hint relative importance Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or Implicitly include one or more this feature.In describing the invention, " multiple " be meant that two or two with On, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " fixation " etc. Term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or is integrally connected；It can be machine Tool connects or electrically connects；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, can be two units Connection within part.For the ordinary skill in the art, above-mentioned term can be understood as the case may be at this Concrete meaning in bright.
Combine accompanying drawing first below and describe electrode terminal 100 according to embodiments of the present invention in detail.
As depicted in figs. 1 and 2, electrode terminal 100 according to embodiments of the present invention includes leading-out terminal 10, connection ring 20 and Graded seal layer 30.Specifically, the outer peripheral face of leading-out terminal 10 is provided with flange 12, and connection ring 20 is enclosed within leading-out terminal 10 Upper end 11 and be located at flange 12 above, be provided with weld groove 14 between connection ring 20 and leading-out terminal 10.Connection ring 20 and exit Son 10 is made up of different metal materials.At least one of upper surface of the lower surface of connection ring 20 and flange 12 is provided with position Boss 50 between the upper surface of flange 12 and the lower surface of connection ring 20.Graded seal layer 30 is located at leading-out terminal 10 and connects Connect and weld between ring 20 and respectively with connection ring 20 and leading-out terminal 10.
Thus, electrode terminal 100 according to embodiments of the present invention, by setting between connection ring 20 and leading-out terminal 10 1 Put weld groove 14, during welding, weld groove 14 can assemble unnecessary solder and residue, it is to avoid solder is excessive, make welding residue easy Cleaning, it is to avoid solder spills into other solders side of electrode terminal 100 and affects to weld, and improves the cleaning of electrode terminal 100 Process efficiency and cleaning performance, and ensure that the sealing of welding between connection ring 20 and leading-out terminal 10, thus improving The manufacturability of electrode terminal 100 and production efficiency, reduce cost.
Meanwhile, by arranging graded seal layer 30 between leading-out terminal 10 and connection ring 20, and by graded seal layer 30 Weld to realize the connection of leading-out terminal 10 and connection ring 20 it is ensured that leading-out terminal respectively with leading-out terminal 10 and connection ring 20 The fastness connecting between 10 and connection ring 20 and stability.In welding process, graded seal layer 30 may also operate as reducing Solder flows to the effect on leading-out terminal 10, it is to avoid solder temperature is too high and leads to leading-out terminal 10 to deform, and improves electrode The safety of terminal 100.
In addition, setting is located at flange at least one of lower surface by upper surface and connection ring 20 in flange 12 Boss 50 between 12 and the lower surface of connection ring 20 is so that the upper surface of flange 12 can be spaced with the lower surface of connection ring 20 Open and incomplete contact between, thus effectively reducing bonding area, reduce the welding stress that flange is subject to, it is to avoid flange occurs Deformation, makes the sealing of electrode terminal 100 and fixing improve.
It is additionally, since leading-out terminal 10 and connection ring 20 is made up of different metal materials, therefore, use this electricity connecting During extremely sub 100 cell, the welding between different metal material can be avoided, such as when this metal terminal is that copper becomes Negative terminal when, connection ring 20 can be made of aluminum, connects cell such that it is able to the power connections that are formed from aluminium Electrode terminal 100, connection ring 20 and power connections welding, it is to avoid the welding between copper and aluminum, increased bonding strength, Do not allow to be also easy to produce soldered gap, salt fog resistance by force, contact resistance is little, improves the performance of set of cells, and, reduce welding cost Height, simplifies technique, applied range.
According to one embodiment of present invention, electrode terminal 100 also includes attachment cap 40, connection ring 20 and attachment cap 40 by Identical metal material is made, the open at its lower end of attachment cap 40 and upper end closed, attachment cap 40 be enclosed within connection ring 20 and with even Connect the welding of at least one of ring 20 and flange 12.Attachment cap 40 and graded seal layer 30 is made to be more easy to be welded into the knot of one Structure, connects more firm, also makes the structure of whole electrode terminal 100 more firm.
Further, according to one embodiment of present invention, attachment cap 40 is welded with flange 12 by graded seal layer 30. In the preparation, first graded seal layer 30 is fixed together with flange 12, then will be welded on transition weldering between attachment cap 40 Connect on layer 30.
In certain specific embodiments of the invention, it is first annular straight that flange 12 includes being connected with leading-out terminal 10 Portion 121, downwardly and outwardly tilt the annular rake 122 of extension and from annular rake from the outer of first annular flat part 121 The second outwards horizontal-extending annular flat part 123 of 122 outer, periphery edge and the connection ring 20 of first annular flat part 121 Periphery along periphery edge that is concordant or extending beyond outward connection ring 20.
In other words, the outer peripheral face of leading-out terminal 10 is provided with along its circumferentially extending circle flange 12, flange 12 is permissible Play the effect supporting graded seal layer 30 and connection ring 20 and welding with it.At least a portion of graded seal layer 30 needs to set Between connection ring 20 and leading-out terminal 10, for connecting connection ring 20 and leading-out terminal 10, with avoid by connection ring 20 with draw Go out terminal 10 directly to weld.
According to one embodiment of present invention, leading-out terminal 10 has circular cross section, connection ring 20, boss 50 and flange 12 are annular, and the external diameter of boss 50 is less than the external diameter of connection ring 20, and the external diameter of first annular flat part 121 is more than connection ring 20 external diameter.
That is, leading-out terminal 10 is formed as cylindrical, the upper end 13 of leading-out terminal 10 is provided with the flange of annular 12, the connection ring 20 of annular is set on the upper end 13 of leading-out terminal 10, and is provided with circle between connection ring 20 and flange 12 The boss 50 of annular, so that can form the solder side of annular between connection ring 20 and leading-out terminal 10, makes welding more firm. First annular flat part 121, connection ring 20 and the external diameter of boss 50 are sequentially reduced.
According to one embodiment of present invention, graded seal layer 30 includes ring part 31, and ring part 31 is located at connection ring 20 Lower surface and the upper surface of flange 12 between.Ring part 31 can be formed as the annular being located between flange 12 and connection ring 20 Pad, the upper surface of ring part 31 is fitted and connected the lower surface of ring 20 and is connected with its soldering, the lower surface laminating of ring part 31 The upper surface of flange 12 is simultaneously weldingly connected with it.Thus, the ring part 31 on graded seal layer 30 can be completely by connection ring 20 Lower surface separate with the flange 12 of leading-out terminal 10, it is entirely avoided directly by connection ring 20 and leading-out terminal 10 weld can Can, further ensure the welding stability of connection ring 20 and leading-out terminal 10.
Boss 50 is located between lower surface and the upper surface of ring part 31 of connection ring 20, under boss 50 and connection ring 20 The upper surface of surface or ring part 31 is weldingly connected, the outer peripheral edge of upper surface of attachment cap 40 and ring part 31 and connection ring 20 outer peripheral face is weldingly connected, and the upper surface of the lower surface first annular flat part 121 of laminating of ring part 31 simultaneously welds phase with it Even.Thus, the outer peripheral face of leading-out terminal 10 arranges flange 12, connection ring 20 and graded seal layer 30 can be facilitated to draw Go out the assembling on terminal 10, and easily graded seal layer 30 can be welded phase with leading-out terminal 10 and connection ring 20 respectively Even.
Further, graded seal layer 30 also includes sleeve part 32, the inner edge of the lower end of sleeve part 32 and ring part 31 It is connected, sleeve part 32 is located between the outer peripheral face of upper end 11 of leading-out terminal 10 and the internal perisporium of connection ring 31.Thus, transition Connection ring 20 can be separated by weld layer 30 completely with leading-out terminal 10, it is entirely avoided directly by connection ring 20 and leading-out terminal The possibility of 10 welding, further ensures the welding stability of connection ring 20 and leading-out terminal 10.
According to one embodiment of present invention, sleeve part 32 and ring part 31 are integrally formed.Thus, integral part of transition Weld layer 30 not only convenient formation, preparation cost is cheap, and ensure that the overall structure stability of graded seal layer 30, thus Improve the integral solder stability of electrode terminal 100.
Further, graded seal layer 30 also includes top cover portion 33, and top cover portion 33 is located at the upper end 11 of leading-out terminal 10 Upper surface on.Specifically, top cover portion 33 and sleeve part 32 cooperatively form the barrel-like structure of open at its lower end, and top cover portion 33 can be covered Live the upper surface of leading-out terminal 10.Thus, one can also be entered between the upper surface of the upper surface of upper end cover 33 and connection ring 20 Step welding is it is ensured that the welding stability of connection ring 20 and leading-out terminal 10.
According to one embodiment of present invention, sleeve part 32, ring part 31 and top cover portion 33 are integrally formed.That is, The structure that graded seal layer 30 is formed as one.Further, flange 12 and leading-out terminal 10 also may be integrally formed.Thus, draw Go out terminal 10 and graded seal layer 30 is integral part of structure, both reduced molding difficulty, controlled preparation cost, protect again Demonstrate,prove the overall structure stability of electrode terminal 100.
Connection ring 20 and leading-out terminal 10 prepare the electrode material that material can be commonly used for those of ordinary skill in the art, As connection ring 20 and when preparing material respectively aluminum or copper one of both and mutually different material of leading-out terminal 10, Neng Goutong When to carry out the material of good welding with aluminum and copper can be mild steel, nickel and rustless steel etc..An enforcement according to the present invention Example, graded seal layer 30 can be mild steel pad, nickel pad, rustless steel pad or ferrum pad.Thus, it is possible to by graded seal layer 30 respectively Welded with connection ring 20 and leading-out terminal 10, and ensured the intensity welded.
According to one embodiment of present invention, graded seal layer 30 is located at the upper surface of flange 12 and the lower end of connection ring 20 Between face, and the upper end 11 of leading-out terminal 10 is directly welded with connection ring 20, and graded seal is passed through in the lower surface of connection ring 20 Layer 30 is welded with flange 12.Thus, the lower surface of connection ring 20 is spaced apart completely by graded seal layer 30 with flange 12, it is to avoid Between connection ring 20 and flange 12 welding it is ensured that leading-out terminal 10 welding stability and fastness.
Further, according to one embodiment of present invention, described graded seal layer is to be arranged on 20 connection rings and/or draw Go out the surface-treated layer on the surface of terminal 10, the set location of this surface-treated layer can be arranged according to specific needs, this table Face process layer can be electrodeposited coating, sprayed coating, anodic oxide coating or vacuum sputtering layer.Specifically, can connection ring 20 with draw Go out on the surface of terminal 10 cooperation and welding position arranges this surface-treated layer.
The structure of boss 50 rationally can be arranged according to specific requirement, alternatively, according to a reality of the present invention Apply example, boss 50 is annular.I.e. boss 50 is located between connection ring 20 and flange 12, and is formed as annular.As a result, connecting Can form annular contact surface between ring 20 and flange 12, the lower surface of connection ring 20 in welding can around leading-out terminal 10 with Flange 12 forms complete annular welds junction, makes welding more firm.
Further, according to one embodiment of present invention, boss 50 is multiple, and multiple boss 50 are disposed concentrically upon and edge Being spaced radially from each other of leading-out terminal 10.As shown in figure 3, boss 50 is formed as two, two boss 50 intervals are located at flange On 12 upper surface, the height of two boss 50 is equal so that the upper surface of two boss 50 can with connection ring 20 under Surface contacts, and then so that connection ring 20 is welded together with two boss 50 simultaneously, so that bonding area is increased, welding position Evenly, welding is more firm.
Certainly, the setting of boss 50 is not limited only to this, for example, in other specific embodiments of the present invention, boss On 50 lower surfaces being located at connection ring 20.With boss 50 be located at similar on flange 12, when boss 50 is located at the following table of connection ring 20 When on face, the structure of boss 50 may be alternatively formed to annular, and the quantity of boss 50 can be multiple, and is spaced apart setting, therefore, its Concrete structure and technique effect repeat no more.
Connection ring 20 and leading-out terminal 10 prepare the electrode material that material can be commonly used for those of ordinary skill in the art, Alternatively, according to one embodiment of present invention, connection ring 20 is aluminium ring, and leading-out terminal 10 is copper tip.That is, connecting Ring 20 is prepared from for aluminum material, and leading-out terminal 10 is prepared from for copper material.Other in the present invention are embodied as In mode, connection ring 20 can also be copper ring, and leading-out terminal 10 is aluminium terminal.
According to one embodiment of present invention, the radial dimension of the upper end 11 of leading-out terminal 10 is less than leading-out terminal 10 The radial dimension of remainder.I.e. the radial dimension of the upper end 11 of leading-out terminal 10 is minimum, the flange 12 on leading-out terminal 10 Radial dimension larger.Now, when sheathed connection ring 20 on the upper end 11 of leading-out terminal 10, the size of connection ring 20 can With less, such that it is able to material-saving consumption.Meanwhile, the upper end 11 of leading-out terminal 10 is less is also easier to enclosed electrode terminal 100.
Further, since connection ring 20 is set on the upper end 11 of leading-out terminal 10, when the upper end 11 of leading-out terminal 10 When changing, connection ring 20 also should make corresponding change.For example, according to one embodiment of present invention, in connection ring 20 The upper end 11 of heart hole 61 and leading-out terminal 10 has noncircular cross section.I.e. the upper end 11 of leading-out terminal 10 is formed as non-cylindrical Shape, correspondingly, the shape of the centre bore 61 of connection ring 20 is again formed as non-circular, with the shape with the upper end 11 of leading-out terminal 10 Shape is adapted to.
It should be noted that electrode terminal 100 according to embodiments of the present invention, the positive pole of battery can be located at it is also possible to It is located at the negative pole of battery.Because the positive pole of battery is usually aluminium electrode, negative pole is usually copper electrode.Therefore, when according to the present invention When the electrode terminal 100 of embodiment is located at the positive pole of battery, leading-out terminal 10 is copper tip, and connection ring 20 is then aluminium ring.Work as root When being located at the negative pole of battery according to the electrode terminal 100 of the embodiment of the present invention, leading-out terminal 10 is aluminium terminal, and connection ring 20 is then copper Ring.
The side surface of connection ring 20 and the side of upper end 11 is included between the upper end 11 of connection ring 20 and leading-out terminal 10 Between surface and/or between the side surface of connection ring 20 and the upper surface of leading-out terminal 10.Detailed below in conjunction with specific embodiment Thin description position relationship between the upper end 11 of connection ring 20 and leading-out terminal 10 for the weld groove 14.
The structure limiting weld groove 14 between the upper end of the upper end of connection ring 20 and leading-out terminal 10 is not particularly limited, only Meet to limit in the upper end of the upper end of connection ring 20 and leading-out terminal 10 and can accommodate the receiving space of solder and residue and be Can.Alternatively, as shown in figure 4, according to one embodiment of present invention, the upper end of the upper surface of connection ring 20 and leading-out terminal 10 Face flushes, and weld groove 14 is located at the periphery of the upper end of leading-out terminal 10 along and the inner edge of upper end of connection ring 20 between.
In other words, at grade, connection ring 20 is sheathed for the upper surface of the upper surface of connection ring 20 and leading-out terminal 10 On the upper end 11 of leading-out terminal 10, the internal perisporium of connection ring 20 is fitted the periphery wall of leading-out terminal 10, connection ring 20 upper It is formed with the circumferentially extending weld groove 14 along leading-out terminal 10 at end and the cooperation of upper end of leading-out terminal 10.Thus, edge is drawn After going out the circumference welding of terminal 10, unnecessary solder and residue all can flow in weld groove 14, improve the effect assembling solder and residue Really.
According to one embodiment of present invention, weld groove 14 is annular and has V-arrangement cross section.Specifically, weld groove 14 is formed It is the cannelure around leading-out terminal 10, and the section of this cannelure is formed as V-shaped that is to say, that the opening of this weld groove 14 Upward, two side walls forming weld groove 14 separately down and extend inwardly to form inclined-plane to mouth.Thus, the weld groove 14 of this structure is permissible Facilitate unnecessary solder when welding and residue that the bottom of weld groove 14 is flowed into from inclined-plane, be easy to solder and residue are collected. Certainly, the section of weld groove 14 is not limited to V-arrangement or other can rapidly accommodate the shape of solder and residue.
Specifically, the position of the weld groove 14 limiting in the upper end of the upper end of connection ring 20 and leading-out terminal 10 is not special Limit, alternatively, according to one embodiment of present invention, weld groove 14 is by the periphery edge of upper end of leading-out terminal 10 and connection ring 20 At least one of the inner edge of upper end on chamfering or rounding formed.
That is, this weld groove 14 can be located at the upper end of connection ring 20 it is also possible to be located at the upper end of leading-out terminal 10, also Can be located between the upper end of connection ring 20 and the upper end of leading-out terminal 10.When weld groove 14 is located at the upper end of connection ring 20, draw Go out terminal 10 and can be provided with notch for complete column structure, the inner edge of the upper end of the internal perisporium of connection ring 20, this notch Cooperatively form weld groove 14 with the periphery wall of leading-out terminal 10；When weld groove 14 is located at the upper end of leading-out terminal 10, draw connection ring 20 can be formed as complete circular cylindrical structure, and the periphery of the upper end of the periphery wall of leading-out terminal 10, should along being provided with notch Notch cooperatively forms weld groove 14 with the internal perisporium of connection ring 20；When groove is located at the upper end of connection ring 20 and leading-out terminal 10 When between upper end, notch can be provided with the inner edge of the upper end of the internal perisporium of connection ring 20, in the periphery of leading-out terminal 10 The periphery of the upper end of wall cooperatively forms this weldering along also above being provided with notch, the notch in connection ring 20 with the notch on leading-out terminal 10 Groove 14.
As shown in figure 5, according to one embodiment of present invention, the upper surface of leading-out terminal 10 is located at the center of connection ring 20 In the hole, the internal perisporium of connection ring 20 limits weld groove 14 with the upper surface of leading-out terminal 10.Specifically, the internal perisporium of connection ring 20 Upper surface extend above the upper surface of leading-out terminal 10 to form weld groove 14.That is, the axial direction of connection ring 20 is long Degree is more than the axial length of the upper end 11 of leading-out terminal 10, the lower surface of connection ring 20 and the upper end 11 of leading-out terminal 10 Lower surface flushes, and the upper surface of connection ring 20 exceeds the upper surface of leading-out terminal 10, then the upper surface of leading-out terminal 10 with exceed The internal perisporium of the connection ring 20 of the upper surface of leading-out terminal 10 cooperatively forms groove 14.Thus, the groove 14 of this structure has relatively Big receiving space, can accommodate more solder and residue, reduce the amount that solder and residue overflow further it is ensured that electrode tip The welding effect of the entirety of son 100.
Further, the periphery edge of the upper end of leading-out terminal 10 is provided with chamfering or rounding.This chamfering or rounding make to draw Go out to be formed groove between the upper end of the outer peripheral face of terminal 10 and the internal perisporium of connection ring 20 so that groove 14 has bigger receiving Space, is further ensured that the welding effect of electrode terminal 100.
In other specific embodiments of the present invention, as shown in Figure 6 and Figure 7, the centre bore 21 of connection ring 20 includes Top hole section 211 and bottom hole section 212, the radial dimension of top hole section 211 is more than the radial dimension of bottom hole section 212, draws The upper end 11 of terminal 10 coordinates in bottom hole section 212.Further, the upper surface of leading-out terminal 10 and bottom hole section 212 Upper edge concordant.Thus, on the basis of the normal weld not affecting electrode terminal 100, groove 14 can be expanded further Receiving space, such that it is able to accommodate more solders and residue, further ensures the integral solder effect of electrode terminal 100.
According to one embodiment of present invention, leading-out terminal 10 has circular cross section, the upper end 11 of leading-out terminal 10 Diameter be less than leading-out terminal 10 remainder diameter.Thus, it is possible to be easy to dress on leading-out terminal 10 for the connection ring 10 Join.
Alternatively, in other specific embodiments of the present invention, weld groove 14 can also be located at the upper of leading-out terminal 10 Between the internal face of the outside wall surface of end 11 and connection ring 20.That is, the radial dimension of the outside wall surface of upper end 11 is less than The radial dimension of the internal face of connection ring 20, when the section of the outside wall surface of upper end 11 and the internal face of connection ring 20 is all formed as When circular, form the vacancy of annular between the internal face of the outside wall surface of upper end 11 and connection ring 20, this vacancy constitutes weld groove 14.The weld groove 14 of this structure makes there is bigger bonding area between connection ring 20 and leading-out terminal 10, can carry further Both welding stabilities high.
Specifically describe battery cover board assembly 200 according to embodiments of the present invention with reference to the accompanying drawings and examples.
Embodiment 1
In an embodiment of the present invention, as shown in figure 8, battery cover board assembly 200 includes：Main body cover plate 80, insulated enclosure Part 60 and the electrode terminal according to the above embodiment of the present invention 100.Specifically, main body cover plate 80 is provided with fairlead 81, insulating sealer 60 has through hole 61, and electrode terminal 100 passes through through hole 61 and fairlead 81 to be arranged in main body cover plate 80.
Battery cover board assembly 200 according to embodiments of the present invention can apply to positive pole and negative pole is respectively provided at the electricity at two ends Chi Shang, battery cover board assembly 200 is respectively provided at the two ends of battery and seals described battery, electricity according to the above embodiment of the present invention Extremely son 100 can be positive terminal and/or the negative terminal of battery, and the electrode terminal 100 positioned at two ends is each passed through main body Cover plate 80 is simultaneously arranged in main body cover plate 80.Because electrode terminal 100 according to the above embodiment of the present invention has above-mentioned technology Effect, therefore, battery cover board assembly 200 according to embodiments of the present invention also has corresponding technique effect.
Embodiment 2
As shown in Figure 9 and Figure 10, in the specific embodiment of the present invention, battery cover board assembly 200a includes：Body cover Plate 80a, the first insulating sealer 60a and the second insulating sealer 60b, positive terminal and negative terminal.
Specifically, main body cover plate 80a is provided with the first fairlead 81a and the second fairlead 81b, the first insulating sealer 60a has first through hole 61a, and the second insulating sealer 60b has the second through hole 61b, positive terminal pass through first through hole 61a and First fairlead 81a, negative terminal passes through the second through hole 61b and the second fairlead 81b, and wherein, negative terminal is according to above-mentioned Electrode terminal 100 described in some embodiments, and the connection ring 20 of negative terminal and positive terminal are by identical metal material system Become, that is, negative terminal described in embodiments of the present invention is the copper tip according to the above embodiment of the present invention, and connection ring 20 is then It is and positive terminal material identical loop configuration.
Battery cover board assembly 200a according to embodiments of the present invention can apply to positive pole and negative pole is located at the electricity of same one end Chi Shang, battery cover board assembly 200a are located on one end of battery and seal described battery, and negative terminal can be according to the present invention The electrode terminal 100 being become with copper of above-described embodiment, positive terminal can be commonly used according to those of ordinary skill in the art Terminal, connection ring 20 is then and positive terminal material identical loop configuration.
Thus, to be each passed through the first insulating sealer 60a and the second insulating sealer 60b close for positive terminal and negative terminal Envelope is arranged in the first fairlead 81a and the second fairlead 81b of main body cover plate 80a, and battery cover board assembly 200a cooperation is installed In the end of battery, thus by battery complete seal.Because electrode terminal 100 according to embodiments of the present invention has above-mentioned technology Effect, battery cover board assembly 200a therefore according to embodiments of the present invention also has corresponding technique effect.I.e.：By in material Between different leading-out terminals 10 and connection ring 20 arrange graded seal layer 30, and by graded seal layer 30 respectively with leading-out terminal 10 and connection ring 20 weld to realize the connection of leading-out terminal 10 and connection ring 20, improve between connection ring and leading-out terminal The fastness connecting and stability, in welding process, graded seal layer 30 may also operate as minimizing solder and flows to leading-out terminal Effect on 10, it is to avoid solder temperature is too high and leads to leading-out terminal 10 to deform, and improves the safety of electrode terminal 100.
In order to ensure the sealing of electrode terminal 100 and the assembling of main body cover plate 80a, alternatively, according to one of the present invention Embodiment, this battery cover board assembly 200a also includes：It is arranged on first annular video disc 70a and the installation in the first fairlead 81a The second ring disk 70b in the second fairlead 81b, the first insulating sealer 60a are supported on first annular video disc 70a, Second insulating sealer 60b is supported on the second ring disk 70b, and positive terminal and negative terminal are each passed through and are arranged on first First annular video disc 70a in fairlead 81a and the second ring disk 70b sealing being arranged in the second fairlead 81b are installed In main body cover plate 80a.
Specifically, the outer peripheral face of negative terminal is provided with flange 12, and flange 12 includes first being connected with leading-out terminal 10 Annular flat part 121, downwardly and outwardly tilt the annular rake 122 of extension and from ring from the outer of first annular flat part 121 Shape rake 122 outwards horizontal-extending the second annular flat part 123, the periphery edge of first annular flat part 121 and connection ring 20 periphery is clamped in first along periphery edge that is concordant or extending outwardly beyond connection ring 20, the wherein first insulating sealer 60a Weld between the annular flat part 123 of ring disk 70a and second and with the second annular flat part 123.Thus, by exhausted first Between edge sealing member 60a and main body cover plate 80a, first annular video disc 70a is set, electrode terminal 100 and main body can be effectively ensured The sealing of cover plate 80a.
Embodiment 3
As is illustrated by figs. 11 and 12, in the specific embodiment of the present invention, battery cover board assembly 200a ' includes：Main body Cover plate 80a ', the first insulating sealer 60a ' and the second insulating sealer 60b ', positive terminal and negative terminal.
Specifically, main body cover plate 80a ' it is provided with the first fairlead 81a ' and the second fairlead 81b ' (as Figure 13 and Figure 14 Shown), the first insulating sealer 60a ' has first through hole 61a ', the second insulating sealer 60b ' has the second through hole 61b ', Positive terminal passes through first through hole 61a ' and the first fairlead 81a ', negative terminal is through the second through hole 61b ' and the second fairlead 81b ', wherein, positive terminal is the electrode terminal 100 according to some embodiments above-mentioned, and the connection ring 20 of positive terminal It is made up of identical metal material with negative terminal, that is, positive terminal described in embodiments of the present invention is according in the present invention State the aluminium terminal of embodiment, connection ring 20 is then and negative terminal material identical loop configuration.
Battery cover board assembly 200a ' according to embodiments of the present invention can apply to positive pole and negative pole is located at the electricity of same one end Chi Shang, battery cover board assembly 200a ' are located on one end of battery and seal described battery, and positive terminal can be according to the present invention The electrode terminal 100 being become with copper of above-described embodiment, negative terminal can be commonly used according to those of ordinary skill in the art Terminal, connection ring 20 is then and negative terminal material identical loop configuration.
Thus, positive terminal and negative terminal are each passed through the first insulating sealer 60a ' and the second insulating sealer 60b ' Be sealingly mounted at main body cover plate 80a ' the first fairlead 81a ' and the second fairlead 81b ' in, battery cover board assembly 200a ' joins Close and be arranged on the end of battery, thus by battery complete seal.On being had due to electrode terminal 100 according to embodiments of the present invention State technique effect, battery cover board assembly 200a ' therefore according to embodiments of the present invention also has corresponding technique effect.I.e.：Logical Cross between the different leading-out terminal of material 10 and connection ring 20 setting graded seal layer 30, and by graded seal layer 30 respectively with Leading-out terminal 10 and connection ring 20 are welded to realize the connection of leading-out terminal 10 and connection ring 20, improve connection ring and exit The fastness of connection between son and stability, in welding process, graded seal layer 30 may also operate as minimizing solder and flows to Effect on leading-out terminal 10, it is to avoid solder temperature is too high and leads to leading-out terminal 10 to deform, and improves electrode terminal 100 Safety.
In order to ensure electrode terminal 100 and main body cover plate 80a ' sealing assembled, alternatively, according to one of the present invention Embodiment, this battery cover board assembly 200a ' also includes：It is arranged on the first annular video disc 70a ' in the first fairlead 81a ' and peace It is contained in the second ring disk 70b ' in the second fairlead 81b ', the first insulating sealer 60a ' is supported on first annular video disc On 70a ', the second insulating sealer 60b ' is supported on the second ring disk 70b ', and positive terminal and negative terminal are each passed through The first annular video disc 70a ' being arranged in the first fairlead 81a ' and the second annular dish being arranged in the second fairlead 81b ' Piece 70b ' is sealingly mounted at main body cover plate 80a ' on.
Specifically, the outer peripheral face of positive terminal is provided with flange 12, and flange 12 includes first being connected with leading-out terminal 10 Annular flat part 121, downwardly and outwardly tilt the annular rake 122 of extension and from ring from the outer of first annular flat part 121 Shape rake 122 outwards horizontal-extending the second annular flat part 123, the periphery edge of first annular flat part 121 and connection ring 20 periphery is clamped in first along periphery edge that is concordant or extending outwardly beyond connection ring 20, the wherein first insulating sealer 60a ' Weld between the annular flat part 123 of ring disk 70a ' and second and with the second annular flat part 123.
In other words, the two ends of the first insulating sealer 60a ' the second ring with first annular video disc 70a ' and flange 12 respectively Shape flat part 123 welds together, and first annular video disc 70a is located at the first insulating sealer 60a ' and main body cover plate 80a ' it Between, the lower surface of first annular video disc 70a ' and main body cover plate 80a ' the first fairlead 81a ' contact, first annular video disc The upper surface of 70a ' is welded together with the first insulating sealer 60a '.Thus, by the first insulating sealer 60a ' and master First annular video disc 70a ', positive terminal and the first insulating sealer 60a ', first annular video disc are set between body cover plate 80a ' 70a ' and main body cover plate 80a ' being installed togather forms the system of closing, and positive terminal and main body cover plate can be effectively ensured The sealing of 80a '.
Further, in certain specific embodiments of the invention, the first insulating sealer 60a ' and second insulation is close Sealing 60b ' is ceramic-seal ring.Compared with rubber seal ring, battery cover board can effectively be extended using ceramic-seal ring The service life of assembly 200a '.Wherein, ceramic-seal ring can be the ceramic-seal ring such as Al2O3, AlN, BN or BeO.In addition, examining Consider ceramic-seal ring to be weldingly connected with first annular video disc 70a ', the second insulating sealer 60b ' and flange 12, and to pottery Porcelain sealing ring is directly welded more difficulty, therefore, it can ceramic-seal ring is further processed, to reduce the difficulty of welding Degree.For example, metalized can be carried out on the surface of ceramic-seal ring, to reach the purpose of easy welding.Specifically, can be Nickel coating, zinc coat or sputtered aluminum layer etc. on the upper surface of ceramic-seal ring or lower surface.
As shown in figure 15, according to one embodiment of present invention, first through hole 61a ' and the second through hole 61b ' in each Individual inclusion above hole section 611, middle hole section 612 and lower hole section 613, during the radial dimension of upper hole section 611 and lower hole section 613 is all higher than Between hole section 612 radial dimension.
Specifically, the middle part of the first insulating sealer 60a ' is provided with up/down perforation taking the first insulating sealer 60a ' as a example First through hole 61a ', the upper surface of the first insulating sealer 60a ' is provided with hole section 611, the first insulating sealer 60a's ' Lower surface is provided with lower hole section 613, and the radial dimension of upper hole section 611 and lower hole section 613 is all higher than the radial direction of middle hole section 612 Size, the radial dimension of middle hole section 612 is more than or equal to the radial dimension of the lower end 13 of positive terminal, so that the first insulation is close Sealing 60a ' can be set on positive terminal.
Further, the roof of lower hole section 613 is provided with annular groove 6131.Thus, first annular video disc 70a's ' is upper During the lower surface contact bonding of surface and the first insulating sealer 60a ', need to avoid lower hole section 613 and annular groove 6131, make Obtain first annular video disc 70a ' and the distance between positive terminal increasing, so that the creep age distance of the first insulating sealer 60a ' is increased Greatly, breakdown voltage resistant ability improves.Meanwhile, the setting of annular groove 6131 can also avoid the solder trickling in welding to flow everywhere Drop down and be difficult to the problem cleaned.
According to one embodiment of present invention, each of first annular video disc 70a ' and the second ring disk 70b ' Upper end is provided with upper flange 71a ' and lower end is provided with lower flange 72a ', each in the first fairlead 81a ' and the second fairlead 81b ' Individual include drawing hole section 811a ' and lower extraction hole section 812a ' (as shown in figure 15), upper extraction hole section 811a ' radial dimension More than lower draw hole section 812a ' radial dimension, convex under the lower end of first annular video disc 70a ' and first annular video disc 70a ' Edge 72a ' is supported on upper extraction hole section 811a of the first fairlead 81a ' ' diapire on and the upper extraction with the first fairlead 81a ' Hole section 811a ' inwall welding, the lower flange 72a ' of the lower end of the second ring disk 70b ' and the second ring disk 70b ' supports Upper extraction hole section 811a in the second fairlead 81b ' ' diapire on and upper extraction hole section 811a with the second fairlead 81b ' ' Inwall welding.
That is, first annular video disc 70a ' is located at main body cover plate 80a ' the first fairlead 81a ' upper extraction hole section In 811a ', the top and bottom of first annular video disc 70a ' are respectively equipped with upper flange 71a ' and lower flange 72a ', upper flange 71a ' With lower flange 72a ' respectively with the first insulating sealer 60a ' and upper draw hole section 811a ' diapire contact.As a result, first Ring disk 70a ' and the first insulating sealer 60a ' and main body cover plate 80a ' contact area increase, weld more firm.
Other of battery cover board assembly 200a ' according to embodiments of the present invention are constituted for those of ordinary skill in the art For be all known, here is not described in detail.
Battery according to embodiments of the present invention includes battery cover board assembly 200 (battery cover board according to embodiments of the present invention Assembly 200a, battery cover board assembly 200a ').Battery cover board assembly 200 (battery cover board assembly 200a, battery cover board assembly 200a ') it is located at the end of battery with sealed cell.Due to battery cover board assembly 200 (battery cover according to embodiments of the present invention Board component 200a, battery cover board assembly 200a ') there is above-mentioned technique effect, therefore, battery according to embodiments of the present invention also has There is corresponding technique effect.
As shown in figure 16, set of cells 300 according to embodiments of the present invention includes according to the above embodiment of the present invention multiple Battery and power connector piece 90.Wherein, battery has positive terminal and negative terminal, and negative terminal can be according to above-mentioned enforcement Copper tip described in example, power connector piece 90 electrically connects adjacent battery, power connector piece 90, the connection ring 20 of negative terminal It is made up of identical metal material with positive terminal.
In other words, negative terminal described in embodiments of the present invention is the copper tip according to the above embodiment of the present invention, The electrode terminal that positive terminal can be commonly used using those of ordinary skill in the art, the connection ring 20 on negative terminal and power are even Contact pin 90 is then and positive terminal material identical loop configuration.
Included according to the above embodiment of the present invention many according to the set of cells 300 in another embodiment of the present invention Individual battery and power connector piece 90.Wherein, battery has positive terminal and negative terminal, and positive terminal can be according to above-mentioned reality Apply the aluminium terminal in example, power connector piece 90 electrically connects adjacent battery, power connector piece 90, connection ring 20 and of positive terminal Negative terminal is made up of identical metal material.
That is, positive terminal described in embodiments of the present invention is the aluminum end according to the above embodiment of the present invention Son, the electrode terminal that negative terminal can be commonly used using those of ordinary skill in the art, the connection ring 20 on positive terminal and dynamic Power connection sheet 90 is then and negative terminal material identical loop configuration.
Set of cells according to the above embodiment of the present invention can be connected in parallel mutually it is also possible to mutually be in series for multiple batteries Connect, can also connect and Hybrid connections in parallel, be the aluminum according to the above embodiment of the present invention with the positive terminal of battery below Terminal, negative terminal are according to specifically describing battery according to embodiments of the present invention as a example the copper tip of the above embodiment of the present invention Group.
When being connected in series between multiple batteries, the positive pole on battery that power connector piece 90 is disposed adjacent with two respectively Terminal is connected with negative terminal, and that is, one end of power connector piece 90 is connected with the positive terminal of a battery, then the other end and phase The negative terminal of adjacent battery is connected.Now, positive terminal is aluminium terminal, and negative terminal is copper tip, negative terminal, i.e. copper tip On be arranged with the connection ring 20 of aluminum, power connector piece 90 is aluminium flake.
Specifically, power connector piece 90 is provided with two installing holes 91 arranged spaced apart, the negative terminal of a battery, I.e. copper tip is provided with the connection ring 20 of aluminum, and connection ring 20 and the copper tip of aluminum are weldingly connected, and copper tip is according to this Electrode terminal 100 in bright some embodiments above-mentioned, has corresponding technique effect, connection ring 20 and the copper tip of aluminum can Stable welding.
One installing hole 91 of the power connector piece 90 of aluminum is set in connection ring 20 and is weldingly connected with it, and power is even Another installing hole 91 of contact pin 90 is set in the positive terminal of adjacent cell, is weldingly connected on aluminium terminal and with it, aluminum Connection ring 20 be phase with the connection between the power connector piece 90 of aluminum and the power connector piece 90 of aluminum and aluminium terminal With the welding between metal material, effectively prevent connected the led to connection of copper aluminium welding and be difficult and unsteady problem, weldering Connect conveniently and welding effect is good, vibration resistance is higher and safety improves, and the performance of set of cells is improved, and the price of aluminum Comparatively cheap, preparation cost can be reduced to a certain extent.
When being connected in parallel between multiple batteries, the positive pole on battery that power connector piece 90 is disposed adjacent with two respectively Terminal or negative terminal are connected, and that is, one end of power connector piece 90 is connected with the positive terminal of a battery, then power connector piece 90 other end is connected with the negative terminal in adjacent cell.Now, positive terminal is aluminium terminal, and negative terminal is copper tip, The connection ring 20 of aluminum is arranged with copper tip, power connector piece 90 is aluminium flake.
Specifically, power connector piece 90 is provided with two installing holes 91 arranged spaced apart, two batteries being disposed adjacent Negative terminal, the connection ring 20 of aluminum is respectively equipped with copper tip, connection ring 20 and the copper tip of aluminum are weldingly connected, copper Terminal is according to the electrode terminal 100 in the present invention some embodiments above-mentioned, has corresponding technique effect, the connection ring of aluminum 20 can stably be welded with copper tip.Two positive terminals being disposed adjacent, then need not arrange connection ring 20 on aluminium terminal.
Two installing holes 91 on the power connector piece 90 being connected with the negative terminal of two neighboring battery are respectively sleeved at Two neighboring negative terminal, that is, in the connection ring 20 of the aluminum of copper tip, and is weldingly connected with two connection rings 20, respectively with phase The positive terminal of adjacent two batteries, two installing holes 91 on power connector piece 90 that is, aluminium terminal is connected are respectively sleeved at two Positive terminal, is weldingly connected on aluminium terminal and respectively with it, the power connector piece 90 of the connection ring of aluminum 20 and aluminum and Connection between the power connector piece 90 of aluminum and aluminium terminal is the welding between same metal material, effectively prevent copper aluminum The led to connection that is weldingly connected is difficult and unsteady problem, convenient welding and welding effect is good, and vibration resistance is higher and pacifies Full property improves, and the performance of set of cells is improved, and the price of aluminum is comparatively cheap, can reduce system to a certain extent Standby cost.
Other compositions of set of cells according to embodiments of the present invention are all for the person of ordinary skill of the art Know, here is not described in detail.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or the spy describing with reference to this embodiment or example Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not Necessarily refer to identical embodiment or example.And, the specific features of description, structure, material or feature can be any One or more embodiments or example in combine in an appropriate manner.
Although embodiments of the invention have been shown and described above it is to be understood that above-described embodiment is example Property it is impossible to be interpreted as limitation of the present invention, those of ordinary skill in the art is in the principle without departing from the present invention and objective In the case of above-described embodiment can be changed within the scope of the invention, change, replace and modification.

Claims (38)

1. a kind of electrode terminal is it is characterised in that include：
Leading-out terminal, the outer peripheral face of described leading-out terminal is provided with flange；
Connection ring, described connection ring and described leading-out terminal are made up of different metal materials, described connection ring be enclosed within described in draw Go out the upper end of terminal and be located above described flange, between described connection ring and described leading-out terminal, there is weld groove, described company Connect at least one of the lower surface of ring and the upper surface of described flange and be provided with upper surface and described company positioned at described flange Connect the boss between the lower surface of ring, first annular flat part that described flange includes being connected, from described with described leading-out terminal The outer of first annular flat part downwardly and outwardly tilt extension annular rake and from described annular rake outer outside Horizontal-extending second annular flat part, the periphery of described first annular flat part along the periphery with described connection ring along concordant or Extend beyond outward the periphery edge of described connection ring；And
Graded seal layer, described graded seal layer be located between described leading-out terminal and described connection ring and respectively with described connection Ring and the welding of described leading-out terminal.
2. electrode terminal according to claim 1 is it is characterised in that also include attachment cap, described attachment cap and described company Connect ring to be made up of identical material, the open at its lower end of described attachment cap and upper end closed, described attachment cap is set in described connection Weld on ring and with least one of described connection ring and described flange.
3. electrode terminal according to claim 2 is it is characterised in that described attachment cap passes through described graded seal layer and institute State flange welding.
4. electrode terminal according to claim 1 is it is characterised in that described leading-out terminal has circular cross section, described Connection ring, described boss and described flange are annular, and the external diameter of described boss is less than the external diameter of described connection ring, and described the The external diameter of one annular flat part is more than the external diameter of described connection ring.
5. electrode terminal according to claim 1 is it is characterised in that described graded seal layer includes ring part, described ring Shape portion is located between lower surface and the upper surface of described flange of described connection ring.
6. electrode terminal according to claim 5 is it is characterised in that described graded seal layer also includes sleeve part, described The lower end of sleeve part is connected with the inner edge of described ring part, and described sleeve part is located at the periphery of the upper end of described leading-out terminal Between the internal perisporium of wall and described connection ring.
7. electrode terminal according to claim 6 is it is characterised in that described sleeve part is integrally formed with described ring part.
8. electrode terminal according to claim 6 is it is characterised in that described graded seal layer also includes top cover, described top Cover on the upper surface of upper end being located at described leading-out terminal.
9. electrode terminal according to claim 8 is it is characterised in that described sleeve part, described ring part and described top cover It is integrally formed.
10. it is characterised in that described boss is annular, described boss includes multiple electrode terminal according to claim 1 And being spaced radially from each other along described flange.
11. electrode terminals according to claim 1 are it is characterised in that described graded seal layer is located at the upper of described flange Between the lower surface of surface and described connection ring, and the upper end of described leading-out terminal is directly welded with described connection ring, described Described graded seal layer and described flange welding are passed through in the lower surface of connection ring.
12. electrode terminals according to claim 1 are it is characterised in that described boss is located at the lower surface of described connection ring On.
It is characterised in that described boss is annular, described boss is multiple to 13. electrode terminals according to claim 12, The plurality of boss is disposed concentrically upon and being spaced radially from each other along described leading-out terminal.
14. electrode terminals according to claim 1 are it is characterised in that the upper surface of described connection ring and described exit The upper surface of son flushes, and described weld groove is located at the periphery of the upper end of described leading-out terminal along the inner circumferential with the upper end of described connection ring Between edge.
15. electrode terminals according to claim 14 are it is characterised in that described weld groove is annular and has V-arrangement section.
16. electrode terminals according to claim 14 it is characterised in that described weld groove by described leading-out terminal upper end Chamfering at least one of inner edge of upper end of periphery edge and described connection ring or rounding are formed.
17. electrode terminals according to claim 1 are it is characterised in that the upper surface of described leading-out terminal is located at described company Connect the center in the hole of ring, the internal perisporium of described connection ring limits described weld groove with the upper surface of described leading-out terminal.
18. electrode terminals according to claim 17 are it is characterised in that the periphery edge of the upper surface of described leading-out terminal sets There are chamfering or rounding.
19. electrode terminals according to claim 17 are it is characterised in that the centre bore of described connection ring includes top hole section With bottom hole section, the radial dimension of described top hole section is more than the radial dimension of described bottom hole section, described leading-out terminal upper End coordinates in the hole section of described bottom.
20. electrode terminals according to claim 19 are it is characterised in that the upper surface of described leading-out terminal and described bottom The upper edge of hole section is concordant.
21. electrode terminals according to claim 1 are it is characterised in that described weld groove is located at the upper end of described leading-out terminal Between the internal face of the outside wall surface in portion and described connection ring.
22. electrode terminals according to claim 1 are it is characterised in that the radial dimension of the upper end of described leading-out terminal Radial dimension less than the remainder of described leading-out terminal.
23. electrode terminals according to any one of claim 1-22 are it is characterised in that described leading-out terminal is copper end Son, described connection ring is aluminium ring.
24. electrode terminals according to any one of claim 1-22 are it is characterised in that described leading-out terminal is aluminum end Son, described connection ring is copper ring.
A kind of 25. battery cover board assemblies are it is characterised in that include：
Main body cover plate, described main body cover plate is provided with fairlead；
There is the insulating sealer of through hole；
Electrode terminal, described electrode terminal passes through described through hole and described fairlead, and described electrode terminal is according to claim Electrode terminal any one of 1-24.
A kind of 26. battery cover board assemblies are it is characterised in that include：
Main body cover plate, described main body cover plate is provided with the first fairlead and the second fairlead；
First insulating sealer with first through hole and second insulating sealer with the second through hole；
Positive terminal and negative terminal, described positive terminal passes through described first through hole and described first fairlead, described negative pole Terminal passes through described second through hole and described second fairlead,
Described negative terminal be claim 1-23 any one of electrode terminal, and the connection ring of described negative terminal with Described positive terminal is made up of identical metal material.
27. battery cover board assemblies according to claim 26 are it is characterised in that also include：It is arranged on described first extraction The first annular video disc of in the hole and the second ring disk being arranged on described second extraction in the hole, described first insulating sealer props up On described first annular video disc, described second insulating sealer is supported on described second ring disk for support.
28. battery cover board assemblies according to claim 27 are it is characterised in that the outer peripheral face of described negative terminal is provided with Flange, first annular flat part that described flange includes being connected with described leading-out terminal, from described first annular flat part Along the annular rake downwardly and outwardly tilting extension with from the second outwards horizontal-extending annular of the outer of described annular rake Flat part, the periphery edge of described first annular flat part is concordant with the periphery edge of described connection ring or extends beyond outward described connection The periphery edge of ring, wherein said first insulating sealer be clamped in described first annular video disc and the described second annular flat part it Between and with the described second annular flat part welding.
A kind of 29. battery cover board assemblies are it is characterised in that include：
Main body cover plate, described main body cover plate is provided with the first fairlead and the second fairlead；
First insulating sealer with first through hole and second insulating sealer with the second through hole；
Positive terminal and negative terminal, described positive terminal passes through described first insulating sealer and described first fairlead, institute State negative terminal and pass through described second insulating sealer and described second fairlead,
Described positive terminal is the electrode terminal any one of claim 1-22 and 24, and the connection of described positive terminal Ring is made up of identical metal material with described negative terminal.
30. battery cover board assemblies according to claim 29 are it is characterised in that also include：It is arranged on described first extraction The first annular video disc of in the hole and the second ring disk being arranged on described second extraction in the hole, described first insulating sealer props up On described first annular video disc, described second insulating sealer is supported on described second ring disk for support.
31. battery cover board assemblies according to claim 30 are it is characterised in that the outer peripheral face of described positive terminal is provided with Flange, first annular flat part that described flange includes being connected with described leading-out terminal, from described first annular flat part Along the annular rake downwardly and outwardly tilting extension with from the second outwards horizontal-extending annular of the outer of described annular rake Flat part, the periphery edge of described first annular flat part is concordant with the periphery edge of described connection ring or extends beyond outward described connection The periphery edge of ring, wherein said first insulating sealer be clamped in described first annular video disc and the described second annular flat part it Between and with the described second annular flat part welding.
32. battery cover board assemblies according to claim 26 or 29 are it is characterised in that described first insulating sealer and Two insulating sealers are ceramic-seal ring.
33. battery cover board assemblies according to claim 26 or 29 are it is characterised in that described first through hole and the second through hole Each of include upper hole section, middle hole section and lower hole section, the radial dimension of described upper hole section and described lower hole section is all higher than The radial dimension of described middle hole section.
34. battery cover board assemblies according to claim 33 are it is characterised in that the roof of described lower hole section is provided with annular Groove.
35. battery cover board assemblies according to claim 33 it is characterised in that described first annular video disc and second annular The upper end of each of video disc is provided with upper flange and lower end is provided with lower flange, in described first fairlead and the second fairlead Each includes drawing hole section and lower extraction hole section, and the described upper radial dimension drawing hole section is more than described lower extraction hole section Radial dimension, the lower flange of the lower end of described first annular video disc and described first annular video disc is supported on described first fairlead The diapire of upper extraction hole section on and with the welding of the inwall of the upper extraction hole section of described first fairlead, described second ring disk Lower end and described second ring disk lower flange be supported on the diapire of upper extraction hole section of described second fairlead and with The inwall welding of the upper extraction hole section of described second fairlead.
A kind of 36. batteries are it is characterised in that include the battery cover board assembly as any one of claim 25-35.
A kind of 37. set of cells are it is characterised in that include：
Multiple batteries, described battery has positive terminal and negative terminal, and wherein said negative terminal is according to claim 1- Electrode terminal any one of 23；
Power connector piece, the adjacent described battery of described power connector piece electrical connection, described power connector piece, described negative pole connect Ring and described positive terminal are made up of identical metal material.
A kind of 38. set of cells are it is characterised in that include：
Multiple batteries, described battery has positive terminal and negative terminal, and wherein said positive terminal is according to claim 1- Electrode terminal any one of 22 and 24；
Power connector piece, the adjacent described battery of described power connector piece electrical connection, described power connector piece, described positive terminal Connection ring and described negative terminal be made up of identical metal material.
CN201310753725.3A 2013-12-31 2013-12-31 Electrode terminal, battery cover plate assembly with same, battery and battery pack Active CN104752674B (en)

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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
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
CN105576161A (en) * 2016-02-03 2016-05-11 深圳市三讯电子有限公司 Electrode terminal, power battery cover plate assembly and power battery
US10763466B2 (en) * 2018-03-09 2020-09-01 Contemporary Amperex Technology Co., Limited Top cap assembly of a secondary battery, and secondary battery

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