CN104752676A - 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 PDFInfo
- Publication number
- CN104752676A CN104752676A CN201310753849.1A CN201310753849A CN104752676A CN 104752676 A CN104752676 A CN 104752676A CN 201310753849 A CN201310753849 A CN 201310753849A CN 104752676 A CN104752676 A CN 104752676A
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- Prior art keywords
- connecting ring
- terminal
- leading
- out terminal
- ring
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Links
- 239000007769 metal material Substances 0.000 claims abstract description 24
- 230000007704 transition Effects 0.000 claims abstract description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 53
- 229910052782 aluminium Inorganic materials 0.000 claims description 50
- 239000004411 aluminium Substances 0.000 claims description 45
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 39
- 229910052802 copper Inorganic materials 0.000 claims description 36
- 239000010949 copper Substances 0.000 claims description 36
- 230000002093 peripheral effect Effects 0.000 claims description 21
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 3
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000010407 anodic oxide Substances 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 238000004544 sputter deposition Methods 0.000 claims description 2
- 230000000712 assembly Effects 0.000 claims 10
- 238000000429 assembly Methods 0.000 claims 10
- 238000003466 welding Methods 0.000 abstract description 58
- 229910000679 solder Inorganic materials 0.000 abstract description 28
- 238000000034 method Methods 0.000 abstract description 21
- 230000008569 process Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 22
- 239000000463 material Substances 0.000 description 20
- 238000007789 sealing Methods 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000005755 formation reaction Methods 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 5
- 230000004308 accommodation Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
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 the connecting ring and the leading-out terminal are made from different metal materials, and the connecting ring sleeves the upper end part of the leading-out terminal; 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. In the electrode terminal according to the embodiment of the invention, the transition welding layer is arranged between the leading-out terminal and the connecting ring, and the transition welding layer is respectively welded with the connecting ring and the leading-out terminal to connect the leading-out terminal with the connecting ring, so as to improve the connection firmness and stability of the connecting ring and the leading-out terminal, in a welding process, the transition welding layer can be used for reducing solders from flowing onto the leading-out terminal to avoid deformation of the leading-out terminal resulting from an overhigh solder temperature, and thus the safety of the electrode terminal is improved.
Description
Technical field
The present invention relates to cell art, more specifically, relate to a kind of electrode terminal, there is the battery cover board assembly of this electrode terminal, battery and battery pack.
Background technology
Electrokinetic cell electric automobile is the vitals of electric automobile, there is material impact to electric automobile performance.Battery pack by formation in series or in parallel with each other for multiple cell, the quality of connection between cell the performance of battery pack is had a significant impact.
Summary of the invention
The application makes with understanding with true discovery following problem based on inventor: when being connected cell with connector, the performance of bonding strength between the electrode terminal of cell and power connections to battery pack has a great impact, because the positive terminal of cell and negative terminal are made up of different metal, such as, the positive terminal of battery is usually made of aluminum, the negative terminal of battery is made of copper usually, usual employing explosive welding (EW), stored energy welding and friction welding (FW) carry out copper aluminium welding, because the welding fusing point of copper aluminium is different, easily occur when copper aluminium is interconnected that not prison welding is leaned on, produce welding gap, weld strength is low, salt fog resistance is poor, contact resistance is large, affect the performance of battery pack, and, the cost of above-mentioned welding method is high, complex process, application is restricted.Therefore, there is the demand improved.
The present invention is intended to one of solve the problems of the technologies described above at least to a certain extent.
For this reason, one object of the present invention is to propose a kind of electrode terminal, utilizes this electrode terminal, can avoid welding different metal when connecting cell, and be connected firmly, stability is high.
Another object of the present invention is to propose a kind of battery cover board assembly with above-mentioned electrode terminal.
Another 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 that proposition two kinds has the battery pack of above-mentioned battery.
The electrode terminal of embodiment according to a first aspect of the present invention, comprising: leading-out terminal; Connecting ring, described connecting ring is made up of different metal materials from described leading-out terminal, and described connecting ring is set in the upper end of described leading-out terminal; And graded seal layer, described graded seal layer to be located between described leading-out terminal and described connecting ring and to weld with described connecting ring and described leading-out terminal respectively.
According to the electrode terminal of the embodiment of the present invention, by arranging graded seal layer between the leading-out terminal be made up of different metal material and connecting ring, and graded seal layer is welded to be connected leading-out terminal and connecting ring with leading-out terminal and connecting ring respectively, improve fastness and the stability of the connection between connecting ring and leading-out terminal, in welding process, graded seal layer can also reduce solder and flow on leading-out terminal, avoid solder temperature too high and cause leading-out terminal to be out of shape, improve the fail safe of electrode terminal.
And, because leading-out terminal and connecting ring are made up of different metal materials, therefore, when connecting the cell using this electrode terminal, the welding between different metal material can be avoided, such as when this metal terminal is the negative terminal of copper one-tenth, connecting ring can be made of aluminum, thus the power connections that can be formed from aluminium connects the electrode terminal of cell, and connecting ring welds with power connections, avoid the welding between copper and aluminium, add bonding strength.
The battery cover board assembly of an embodiment according to a second aspect of the present invention, comprising: main body cover plate, and described main body cover plate is provided with fairlead; There is the insulating sealer of through hole; Electrode terminal, described electrode terminal is through described through hole and described fairlead, and 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, comprising: main body cover plate, and described main body cover plate is provided with the first fairlead and the second fairlead; There is the first insulating sealer of the first through hole and there is the second insulating sealer of the second through hole; Positive terminal and negative terminal, described positive terminal is through described first through hole and described first fairlead, described negative terminal is through described second through hole and described second fairlead, described negative terminal is the electrode terminal according to above-described embodiment, and the connecting 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, comprising: main body cover plate, and described main body cover plate is provided with the first fairlead and the second fairlead; There is the first insulating sealer of the first through hole and there is the second insulating sealer of the second through hole; Positive terminal and negative terminal, described positive terminal is through described first insulating sealer and described first fairlead, described negative terminal is through described second insulating sealer and described second fairlead, described positive terminal is the electrode terminal according to above-described embodiment, and the connecting ring of described positive terminal is made up of identical metal material with described negative terminal.
The battery of embodiment according to a third aspect of the present invention, comprises the battery cover board assembly according to above-described embodiment.
The battery pack of an embodiment according to a fourth aspect of the present invention, comprising: multiple battery, and described battery has positive terminal and negative terminal, and wherein said negative terminal is for being the electrode terminal according to above-described embodiment according to claim; Power brace, described power brace is electrically connected adjacent described battery, and described power brace, described negative pole connecting ring are made up of identical metal material with described positive terminal.
The battery pack of another embodiment according to a fourth aspect of the present invention, comprising: multiple battery, and described battery has positive terminal and negative terminal, and wherein said positive terminal is the electrode terminal according to above-described embodiment; Power brace, described power brace is electrically connected adjacent described battery, and the connecting ring of described power brace, described positive terminal is made up of identical metal material with described negative terminal.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the profile of electrode terminal according to an embodiment of the invention;
Fig. 2 is the profile of electrode terminal in accordance with another embodiment of the present invention;
Fig. 3 is the perspective view of electrode terminal according to an embodiment of the invention;
Fig. 4 is the profile of the electrode terminal according to another embodiment of the present invention;
Fig. 5 is the profile of the electrode terminal according to another embodiment of the present invention;
Fig. 6 is the profile of electrode terminal according to an embodiment of the invention;
Fig. 7 is the profile of the connecting ring of electrode terminal in Fig. 6;
Fig. 8 is the profile of the electrode terminal according to another embodiment of the present invention;
Fig. 9 is the profile of the electrode terminal according to another embodiment of the present invention;
Figure 10 is the structural representation of battery cover board assembly according to an embodiment of the invention;
Figure 11 is the structural representation of battery cover board assembly in accordance with another embodiment of the present invention;
Figure 12 is the partial structurtes schematic diagram in Figure 11;
Figure 13 is the structural representation of the battery cover board assembly according to another embodiment of the present invention;
Figure 14 is the partial structurtes schematic diagram in Figure 13;
Figure 15 is the profile of the cover plate of battery cover board assembly according to an embodiment of the invention;
Figure 16 is the vertical view of the cover plate of battery cover board assembly according to an embodiment of the invention;
Figure 17 is the partial structurtes schematic diagram of Figure 14;
Figure 18 is the structural representation of the battery pack according to the embodiment of the present invention.
Reference numeral:
Electrode terminal 100;
Leading-out terminal 10; Upper end 11; Flange 12; First annular flat part 121; Annular rake 122; Second annular flat part 123; Leading-out terminal lower end 13; Weld groove 14;
Battery cover board assembly 200(200a, 200a ');
Connecting ring 20; Centre bore 21; Upper hole section 211; Bottom hole section 212;
Pad 30; Ring part 31; Sleeve part 32; Top cover portion 33;
Boss 50;
Insulating sealer 60; First insulating sealer 60a(60a '); Second insulating sealer 60b(60b '); Through hole 61; First through hole 61a(61a '); Second through hole 61b(61b '); Upper end hole section 611; Interstitial hole section 612; Lower stomidium section 613; Annular groove 6131;
First ring disk 70a(70a '); Second ring disk 70b(70b '); Upper flange 71a '; Lower flange 72a ';
Main body cover plate 80(80a, 80a '); Fairlead 81; First fairlead 81a(81a '); Second fairlead 81b(81b '); Upper fairlead section 811a '; Lower fairlead section 812a ';
Connect aluminium flake 90; Installing hole 91;
Battery pack 300.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
In describing the invention, it will be appreciated that, term length " " thickness ", " on ", D score, " vertically ", " level ", " top ", " end ", " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
First the electrode terminal 100 according to the embodiment of the present invention is specifically described by reference to the accompanying drawings below.
As shown in Figure 1 to Figure 3, leading-out terminal 10, connecting ring 20 and graded seal layer 30 is comprised according to the electrode terminal 100 of the embodiment of the present invention.
Specifically, connecting ring 20 is made up of different metal materials from leading-out terminal 10, connecting ring 20 is set on the upper end 11 of leading-out terminal 10, and graded seal layer 30 to be located between leading-out terminal 10 and connecting ring 20 and to weld with connecting ring 20 and leading-out terminal 10 respectively.
Thus, according to the electrode terminal 100 of the embodiment of the present invention, by arranging graded seal layer 30 between the leading-out terminal 10 be made up of different metal material and connecting ring 20, and graded seal layer 30 is welded with leading-out terminal 10 and connecting ring 20 connection realizing leading-out terminal 10 and connecting ring 20 respectively, improve fastness and the stability of the connection between connecting ring and leading-out terminal, in welding process, graded seal layer 30 can also play and reduce solder and flow to effect on leading-out terminal 10, avoid solder temperature too high and cause leading-out terminal 10 to be out of shape, improve the fail safe of electrode terminal 100.
And, because leading-out terminal 10 and connecting ring 20 are made up of different metal materials, therefore, when connecting the cell using this electrode terminal 100, the welding between different metal material can be avoided, such as when this metal terminal is the negative terminal of copper one-tenth, connecting ring 20 can be made of aluminum, thus the power connections that can be formed from aluminium connects the electrode terminal 100 of cell, connecting ring 20 welds with power connections, avoid the welding between copper and aluminium, add bonding strength, be not easy to produce welding gap, salt fog resistance is strong, contact resistance is little, improve the performance of battery pack, and, reduce welding cost high, simplify technique, applied range.
According to the electrode terminal 100 of the embodiment of the present invention, by arranging graded seal layer 30 between leading-out terminal 10 and connecting ring 20, graded seal layer 30 can select the material that can carry out good welds with leading-out terminal 10 and connecting ring 20 respectively to make, graded seal layer 30 can weld with leading-out terminal 10 and connecting ring 20 respectively and have higher weld strength, meet the requirement of strength that leading-out terminal 10 is connected with connecting ring 20, and the fume resistance of welding portion is also improved.In addition, graded seal layer 30 can also decrease the solder that can flow directly on leading-out terminal 10 to a certain extent, can effectively prevent from being out of shape because weld the leading-out terminal 10 caused, thus ensures the safety in utilization of electrode terminal 100.
When connecting ring 20 is set on the upper end 11 of leading-out terminal 10, also can weld between the internal perisporium of connecting ring 20 and the periphery wall of upper end 11, according to one embodiment of present invention, graded seal layer 30 comprises the sleeve part 32 between internal perisporium and the upper end 11 of leading-out terminal 10 being located at connecting ring 20, the lower end of sleeve part 32 is connected with the inner edge of ring part 31, and sleeve part 32 is located between the upper end 11 of leading-out terminal 10 and the internal perisporium of connecting ring 20.Thus, by arrange sleeve part 32 can by the internal perisporium of connecting ring 20 spaced apart with the periphery wall of the upper end 11 of leading-out terminal 10 and weld with both respectively two connect, the stability of welding between the periphery wall of the upper end 11 of leading-out terminal 10 and the internal perisporium of connecting ring 20 can be ensured.
Alternatively, according to one embodiment of present invention, the outer peripheral face of leading-out terminal 10 is provided with flange 12, and graded seal layer 30 comprises the ring part 31 between upper surface and the lower surface of connecting ring 20 being located at flange 12, and the lower surface of connecting ring 20 is welded with flange 12 by ring part 31.Thus, the ring part 31 of this structure can by the lower surface of connecting ring 20 and flange 12 spaced apart and be weldingly connected with both respectively, the stability of welding between the lower surface of connecting ring 20 with flange 12 can be ensured.
In other embodiments of the present invention, the outer peripheral face of leading-out terminal 10 is provided with flange 12, and graded seal layer 30 comprises the sleeve part 32 between the ring part 31 between upper surface and the lower surface of connecting ring 20 being located at flange 12 and the periphery wall being located at the internal perisporium of connecting ring 20 and the upper end 11 of leading-out terminal 10.
That is, graded seal layer 30 not only comprises the sleeve part 32 between the periphery wall of the upper end 11 of internal perisporium and the leading-out terminal 10 being located at connecting ring 20, also comprises the ring part 31 between lower surface and the first annular flat part 121 being located at connecting ring 20.Thus, connecting ring 20 and leading-out terminal 10 can separate by graded seal layer 30 completely, completely avoid the possibility of directly being welded with leading-out terminal 10 by connecting ring 20, further ensure the welding stability of connecting ring 20 and leading-out terminal 10.
According to one embodiment of present invention, the outer peripheral face of described leading-out terminal is provided with flange, described connecting ring is positioned at above described flange, described flange comprises the first annular flat part be connected with described leading-out terminal, second annular flat part of the annular rake extended downwardly towards outer incline from the outer of described first annular flat part and the outside horizontal-extending in outer from described annular rake, the edge, periphery of described first annular flat part and the periphery of described connecting ring exceed the edge, periphery of described connecting ring along concordant or extension, described graded seal layer comprises the ring part be located between described first annular flat part and the lower surface of described connecting ring.
According to one embodiment of present invention, the outer peripheral face of leading-out terminal 10 is provided with flange 12, connecting ring 20 is positioned at above flange 12, flange 12 comprises the first annular flat part 121 be connected with leading-out terminal 10, the annular rake 122 extended downwardly towards outer incline from the outer of the first annular flat part 121 and the second annular flat part 123 from the outside horizontal-extending of annular rake 122, the periphery of the first annular flat part 121 along with the periphery of connecting ring 20 along concordant or stretch out and exceed the edge, periphery of connecting ring 20, graded seal layer 30 comprises the ring part 31 be located between the first annular flat part 121 and the lower surface of connecting ring 20.
In other words, the outer peripheral face of leading-out terminal 10 is provided with the circle flange 12 extended along its circumference, flange 12 can play and support graded seal layer 30 and connecting ring 20 and the effect of welding with it.Graded seal layer 30 need to be located at the position needing between connecting ring 20 with leading-out terminal 10 to weld at least partially, to avoid connecting ring 20 directly to weld with leading-out terminal 10.Ring part 31 can be formed as being located at the annular gasket between the first annular flat part 121 and connecting ring 20, 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 of ring part 31 fit the first annular flat part 121 upper surface and be weldingly connected with it.Thus, the outer peripheral face of leading-out terminal 10 arranges flange 12, connecting ring 20 and the assembling of graded seal layer 30 on leading-out terminal 10 can be facilitated, and can easily graded seal layer 30 be weldingly connected with leading-out terminal 10 and connecting ring 20 respectively.
Further, graded seal layer 30 also comprises sleeve part 32, and the lower end of sleeve part 32 is connected with the inner edge of ring part 31, between the outer peripheral face that sleeve part 32 is located at the upper end 11 of leading-out terminal 10 and the internal perisporium of connecting ring 31.Thus, connecting ring 20 and leading-out terminal 10 can separate by graded seal layer 30 completely, completely avoid the possibility of directly being welded with leading-out terminal 10 by connecting ring 20, further ensure the welding stability of connecting 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, the graded seal layer 30 not only convenient formation be integrally formed, preparation cost is cheap, and ensure that the overall structure stability of graded seal layer 30, thus improves the integral solder stability of electrode terminal 100.
Further, graded seal layer 30 also comprises top cover portion 33, and top cover portion 33 is located on the upper surface of upper end 11 of leading-out terminal 10.Particularly, top cover portion 33 coordinates with sleeve part 32 barrel-like structure forming open at its lower end, and top cover portion 33 can cover the upper surface of leading-out terminal 10.Thus, can also weld further between the upper surface of upper end cover 33 and the upper surface of connecting ring 20, guarantee the welding stability of connecting 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 is formed as one of graded seal layer 30.Further, flange 12 and leading-out terminal 10 also can be integrally formed.Thus, the structure that leading-out terminal 10 and graded seal layer 30 are all formed as one, had both reduced shaping difficulty, had controlled preparation cost, in turn ensure that the overall structure stability of electrode terminal 100.
Connecting ring 20 and leading-out terminal 10 prepare the electrode material that material can commonly use for those of ordinary skill in the art, when connecting ring 20 and leading-out terminal 10 prepare material be respectively one of aluminium or copper and mutually different material time, can carry out the good material welded with aluminium and copper can be mild steel, nickel and stainless steel etc. simultaneously.According to one embodiment of present invention, graded seal layer 30 can be mild steel pad, nickel pad, stainless steel pad or iron pad.Thus, graded seal layer 30 can be welded with connecting ring 20 and leading-out terminal 10 respectively, and ensure the intensity of welding.
Further, according to one embodiment of present invention, described graded seal layer is for being arranged on the surface-treated layer on the surface of 20 connecting rings and/or leading-out terminal 10, the setting position of this surface-treated layer can be arranged according to specific needs, and this surface-treated layer can be electrodeposited coating, sprayed coating, anodic oxide coating or vacuum sputtering layer.Particularly, on the surface that can coordinate with leading-out terminal 10 at connecting ring 20 and welding position arranges this surface-treated layer.
In correlation technique, on the upper end 11 of leading-out terminal 10 during sheathed connecting ring 20, the upper surface of connecting ring 20 is usually concordant with the upper surface of leading-out terminal 10, when welding leading-out terminal 10 and connecting ring 20, unnecessary solder and residue outwards can overflow from the upper surface of the upper surface of leading-out terminal 10 and connecting ring 20, the solder overflowed and residue fall other positions needing welding, welding effect and the sealing of other solders side can be had a strong impact on, and solder and residue cleaning difficulty, cleaning efficiency is low.
In order to solve the problem, in embodiments more of the present invention, between the upper end 11 of connecting ring 20 and leading-out terminal 10, there is weld groove 14.Wherein, comprise between the side surface of connecting ring 20 and the side surface of upper end 11 and/or between the upper surface of the side surface of connecting ring 20 and leading-out terminal 10 between the upper end 11 of connecting ring 20 and leading-out terminal 10.The position relationship of weld groove 14 between connecting ring 20 and the upper end 11 of leading-out terminal 10 is described in detail below in conjunction with specific embodiment.
The structure limiting weld groove 14 between the upper end of connecting ring 20 and the upper end of leading-out terminal 10 is not particularly limited, and limits the spatial accommodation that can hold solder and residue as long as meet in the upper end of the upper end of connecting ring 20 and leading-out terminal 10.Alternatively, as shown in Figure 4, according to one embodiment of present invention, the upper surface of connecting ring 20 flushes with the upper surface of leading-out terminal 10, and weld groove 14 is located between the inner edge of the edge, periphery of the upper end of leading-out terminal 10 and the upper end of connecting ring 20.
In other words, the upper surface of connecting ring 20 and the upper surface of leading-out terminal 10 are at grade, connecting ring 20 is set on the upper end 11 of leading-out terminal 10, the periphery wall of the internal perisporium laminating leading-out terminal 10 of connecting ring 20, the cooperation place of the upper end of connecting ring 20 and the upper end of leading-out terminal 10 circumference be formed along leading-out terminal 10 extend weld groove 14.Thus, after the circumference welding of leading-out terminal 10, unnecessary solder and residue all can flow in weld groove 14, improve the effect of assembling solder and residue.
According to one embodiment of present invention, weld groove 14 is annular and has V-arrangement cross section.Particularly, weld groove 14 is formed as the cannelure around leading-out terminal 10, and the cross section of this cannelure is formed as V-shaped, and that is, this weld groove 14 opening up, two sidewalls forming weld groove 14 are respectively to the lower and formation inclined-plane that extends internally.Thus, solder unnecessary when the weld groove 14 of this structure can conveniently weld and residue flow into the bottom of weld groove 14 from inclined-plane, are convenient to collect solder and residue.Certainly, the cross section of weld groove 14 is not limited to V-arrangement, also can hold the shape of solder and residue rapidly for other.
Particularly, the position of the weld groove 14 limited in the upper end of the upper end of connecting ring 20 and leading-out terminal 10 is not particularly limited, alternatively, according to one embodiment of present invention, weld groove 14 is formed by the chamfering at least one in the inner edge of the edge, periphery of the upper end of leading-out terminal 10 and the upper end of connecting ring 20 or rounding.
That is, this weld groove 14 can be located at the upper end of connecting ring 20, also can be located at the upper end of leading-out terminal 10, can also be located between the upper end of connecting ring 20 and the upper end of leading-out terminal 10.When weld groove 14 is located at the upper end of connecting ring 20, leading-out terminal 10 can be complete column structure, and the inner edge of the upper end of the internal perisporium of connecting ring 20 is provided with notch, and this notch coordinates with the periphery wall of leading-out terminal 10 and forms weld groove 14; When weld groove 14 is located at the upper end of leading-out terminal 10, draws connecting ring 20 and can be formed as complete circular cylindrical structure, the periphery of the upper end of the periphery wall of leading-out terminal 10 is along being provided with notch, and this notch coordinates with the internal perisporium of connecting ring 20 and forms weld groove 14; When groove is located between the upper end of connecting ring 20 and the upper end of leading-out terminal 10, notch can be provided with on the inner edge of the upper end of the internal perisporium of connecting ring 20, the upper end of the periphery wall of leading-out terminal 10 periphery along on be also provided with notch, the notch on connecting ring 20 coordinates with the notch on leading-out terminal 10 and forms this weld groove 14.
As shown in Figure 5, according to one embodiment of present invention, the upper surface of leading-out terminal 10 is positioned at the centre bore of connecting ring 20, and the internal perisporium of connecting ring 20 and the upper surface of leading-out terminal 10 limit weld groove 14.Particularly, the upper surface of the internal perisporium of connecting ring 20 upwards extends beyond the upper surface of leading-out terminal 10 to form weld groove 14.That is, the axial length of connecting ring 20 is greater than the axial length of the upper end 11 of leading-out terminal 10, the lower surface of connecting ring 20 flushes with the lower surface of the upper end 11 of leading-out terminal 10, the upper surface of connecting ring 20 exceeds the upper surface of leading-out terminal 10, then the upper surface of leading-out terminal 10 coordinates with the internal perisporium of connecting ring 20 of the upper surface exceeding leading-out terminal 10 and forms groove 14.Thus, the groove 14 of this structure has larger spatial accommodation, can hold more solder and residue, reduces the amount of solder and residue spilling further, ensures the welding effect of the entirety of electrode terminal 100.
Further, the periphery of the upper end of leading-out terminal 10 is along being provided with chamfering or rounding.This chamfering or rounding make to form groove between the internal perisporium of the upper end of the outer peripheral face of leading-out terminal 10 and connecting ring 20, make groove 14 have larger spatial accommodation, ensure the welding effect of electrode terminal 100 further.
In other embodiments of the present invention, as shown in Figure 6 and Figure 7, the centre bore 21 of connecting ring 20 comprises upper hole section 211 and bottom hole section 212, the radial dimension of upper hole section 211 is greater than the radial dimension of bottom hole section 212, and the upper end 11 of leading-out terminal 10 is engaged in bottom hole section 212.Further, leading-out terminal 10 upper surface with in bottom hole section 212 along concordant.Thus, on the basis of normal weld not affecting electrode terminal 100, the spatial accommodation of groove 14 can be expanded further, thus more solder and residue can be held, further ensure the integral solder effect of electrode terminal 100.
According to one embodiment of present invention, leading-out terminal 10 has circular cross section, and the diameter of the upper end 11 of leading-out terminal 10 is less than the diameter of the remainder of leading-out terminal 10.Thus, can so that the assembling of connecting ring 10 on leading-out terminal 10.
Alternatively, in other embodiments of the present invention, between the outside wall surface that weld groove 14 can also be located at the upper end 11 of leading-out terminal 10 and the internal face of connecting 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 connecting ring 20, when the cross section of the outside wall surface of upper end 11 and the internal face of connecting ring 20 is all formed as circle, form the vacancy of annular between the outside wall surface of upper end 11 and the internal face of connecting ring 20, namely this vacancy forms weld groove 14.The weld groove 14 of this structure makes to have larger bonding area between connecting ring 20 and leading-out terminal 10, can improve both welding stabilities further.
As shown in Figure 8, according to one embodiment of present invention, the outer peripheral face of leading-out terminal 10 is provided with flange 12, connecting ring 20 is positioned at above flange 12, and at least one in the upper surface of flange 12 and the lower surface of connecting ring 20 is provided with the boss 50 between the upper surface and the lower surface of connecting ring 20 of flange 12.Thus, by arranging boss 50 between connecting ring 20 and ring part 31, the upper surface of ring part 31 can be made spaced apart with the lower surface of connecting ring 20 and not exclusively contact, when welding, without the need to by the lower surface of connecting ring 20 together with the upper surface integral solder of ring part 31, thus decrease the welding stress that ring part 31 and flange 12 be subject to, avoid flange 12 to deform, and then the sealing of electrode terminal 100 and fixing are improved.
Particularly, flange 12 can comprise the first annular flat part 121 be connected with leading-out terminal 10, the annular rake 122 extended downwardly towards outer incline from the outer of the first annular flat part 121 and from annular rake 122 outwards the annular flat part 121 of the second annular flat part 123, first of horizontal-extending periphery along with the periphery of connecting ring 20 along concordant or stretch out and exceed the edge, periphery of connecting ring 20.Alternatively, according to one embodiment of present invention, boss 50 is located on the first annular flat part 121.Further, arc transition between the lower surface of the first annular flat part 121 and the outer peripheral face of leading-out terminal 10.
Namely the plane that on flange 12, level height is the highest is the upper surface of the first annular flat part 121, the upper surface of the first annular flat part 121 is provided with boss 50, the junction of the lower surface of the first annular flat part 121 and the outer peripheral face of leading-out terminal 10 is formed as circular arc, and the sectional dimension of the first annular flat part 121 is greater than or equal to the sectional dimension of connecting ring 20.
Wherein, in embodiments more of the present invention, flange 12 and leading-out terminal 10 are integrally formed.Thus, the structure be integrally formed not only convenient formation, reduces preparation cost, and ensure that the overall structure stability of leading-out terminal 10, also makes the connection of whole electrode terminal 100 more firm simultaneously.
The structure of boss 50 rationally can be arranged according to concrete requirement, and alternatively, according to one embodiment of present invention, boss 50 is annular.Namely boss 50 is located between connecting ring 20 and flange 12, and is formed as annular.Thus, make can form annular contact surface between connecting ring 20 and flange 12, the lower surface of connecting ring 20 can form complete annular welds junction around leading-out terminal 10 and flange 12 when welding, and makes welding comparatively firm.
Further, according to one embodiment of present invention, boss 50 is multiple, and multiple boss 50 is arranged with one heart and radial direction along leading-out terminal 10 is spaced apart from each other.As shown in Figure 9, boss 50 is formed as two, two boss 50 intervals are located on the upper surface of flange 12, the height of two boss 50 is equal, to make the upper surface of two boss 50 can both contact with the lower surface of connecting ring 20, and then connecting ring 20 can be welded together with two boss 50 simultaneously, bonding area is increased, welding position evenly, weld more firm.
Certainly, the setting of boss 50 is not limited only to this, and such as, in other embodiments of the present invention, boss 50 is located on the lower surface of connecting ring 20.Be located on flange 12 similar with boss 50, when on the lower surface that boss 50 is located at connecting ring 20, the structure of boss 50 also can be formed as annular, and the quantity of boss 50 can be multiple, and spaced apart setting, therefore, its concrete structure and technique effect repeat no more.
Connecting ring 20 and leading-out terminal 10 prepare the electrode material that material can commonly use for those of ordinary skill in the art, alternatively, according to one embodiment of present invention, connecting 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.In other embodiments of the present invention, connecting ring 20 also can 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 the radial dimension of the remainder of leading-out terminal 10.Namely the radial dimension of the upper end 11 of leading-out terminal 10 is minimum, and the radial dimension of the flange 12 on leading-out terminal 10 is larger.Now, when on the upper end 11 of leading-out terminal 10 during sheathed connecting ring 20, the size of connecting ring 20 can be less, thus can save material usage.Meanwhile, the upper end 11 of leading-out terminal 10 is less is also easier to enclosed electrode terminal 100.
In addition, because connecting ring 20 is set on the upper end 11 of leading-out terminal 10, when the upper end 11 of leading-out terminal 10 changes, connecting ring 20 also should make corresponding change.Such as, according to one embodiment of present invention, the centre bore 61 of connecting ring 20 and the upper end 11 of leading-out terminal 10 have noncircular cross section.Namely the upper end 11 of leading-out terminal 10 is formed as non-cylindrical, and correspondingly, the shape of the centre bore 61 of connecting ring 20 is also formed as non-circular, with the shape adaptation of the upper end 11 with leading-out terminal 10.
It should be noted that, according to the electrode terminal 100 of the embodiment of the present invention, the positive pole of battery can be located at, also can be located at the negative pole of battery.Positive pole due to battery is generally aluminium electrode, and negative pole is generally copper electrode.Therefore, when being located at the positive pole of battery according to the electrode terminal 100 of the embodiment of the present invention, leading-out terminal 10 is copper tip, and connecting ring 20 is aluminium ring.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 connecting ring 20 is copper ring.
The battery cover board assembly 200 according to the embodiment of the present invention is specifically described below in conjunction with drawings and Examples.
Embodiment 1
In an embodiment of the present invention, as shown in Figure 10, battery cover board assembly 200 comprises: main body cover plate 80, insulating sealer 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, and insulating sealer 60 has through hole 61, and electrode terminal 100 is arranged in main body cover plate 80 through through hole 61 and fairlead 81.
Positive pole can be applied to and negative pole is located on the battery at two ends respectively according to the battery cover board assembly 200 of the embodiment of the present invention, battery cover board assembly 200 is located at the two ends of battery respectively and seals described battery, electrode terminal 100 according to the above embodiment of the present invention can be positive terminal and/or the negative terminal of battery, and the electrode terminal 100 being positioned at two ends is each passed through main body cover plate 80 and is arranged in main body cover plate 80.Because electrode terminal 100 according to the above embodiment of the present invention has above-mentioned technique effect, therefore, the battery cover board assembly 200 according to the embodiment of the present invention also has corresponding technique effect.
Embodiment 2
As is illustrated by figs. 11 and 12, in the specific embodiment of the present invention, battery cover board assembly 200a comprises: main body cover plate 80a, the first insulating sealer 60a and the second insulating sealer 60b, positive terminal and negative terminal.
Particularly, main body cover plate 80a is provided with the first fairlead 81a and the second fairlead 81b, first insulating sealer 60a has the first through hole 61a, second insulating sealer 60b has the second through hole 61b, positive terminal is through the first through hole 61a and the first fairlead 81a, negative terminal is through the second through hole 61b and the second fairlead 81b, wherein, negative terminal is the electrode terminal 100 according to more above-mentioned embodiments, and the connecting ring 20 of negative terminal is made up of identical metal material with positive terminal, namely described in embodiments of the present invention negative terminal is copper tip according to the above embodiment of the present invention, connecting ring 20 is the loop configuration identical with positive terminal material.
Positive pole can be applied to and negative pole is located on the battery of same one end according to the battery cover board assembly 200a of the embodiment of the present invention, one end that battery cover board assembly 200a is located at battery seals described battery, negative terminal can be the electrode terminal 100 become with copper according to the above embodiment of the present invention, positive terminal can for the terminal commonly used according to those of ordinary skill in the art, and connecting ring 20 is the loop configuration identical with positive terminal material.
Thus, positive terminal and negative terminal be each passed through the first insulating sealer 60a and the second insulating sealer 60b seal be arranged on main body cover plate 80a the first fairlead 81a and the second fairlead 81b in, battery cover board assembly 200a coordinates the end being arranged on battery, thus by battery complete seal.Because the electrode terminal 100 according to the embodiment of the present invention has above-mentioned technique effect, therefore according to the battery cover board assembly 200a of the embodiment of the present invention, also there is corresponding technique effect.That is: by arranging graded seal layer 30 between the different leading-out terminal 10 of material and connecting ring 20, and graded seal layer 30 is welded with leading-out terminal 10 and connecting ring 20 connection realizing leading-out terminal 10 and connecting ring 20 respectively, improve fastness and the stability of the connection between connecting ring and leading-out terminal, in welding process, graded seal layer 30 can also play and reduce solder and flow to effect on leading-out terminal 10, avoid solder temperature too high and cause leading-out terminal 10 to be out of shape, improve the fail safe of electrode terminal 100.
In order to ensure the sealing that electrode terminal 100 and main body cover plate 80a assemble, alternatively, according to one embodiment of present invention, this battery cover board assembly 200a also comprises: the second ring disk 70b being arranged on the first ring disk 70a in the first fairlead 81a and being arranged in the second fairlead 81b, first insulating sealer 60a is supported on the first ring disk 70a, second insulating sealer 60b is supported on the second ring disk 70b, positive terminal and negative terminal are each passed through the first ring disk 70a be arranged in the first fairlead 81a and the second ring disk 70b sealing be arranged in the second fairlead 81b is arranged on main body cover plate 80a.
Particularly, the outer peripheral face of negative terminal is provided with flange 12, flange 12 comprises the first annular flat part 121 be connected with leading-out terminal 10, the annular rake 122 extended downwardly towards outer incline from the outer of the first annular flat part 121 and the second annular flat part 123 from the outside horizontal-extending of annular rake 122, the periphery of the first annular flat part 121 along with the periphery of connecting ring 20 along concordant or stretch out and exceed the edge, periphery of connecting ring 20, wherein the first insulating sealer 60a to be clamped between the first ring disk 70a with the second annular flat part 123 and to weld with the second annular flat part 123.Thus, by arranging the first ring disk 70a between the first insulating sealer 60a and main body cover plate 80a, the sealing of electrode terminal 100 and main body cover plate 80a effectively can be ensured.
Embodiment 3
As shown in Figure 13 and Figure 14, in the specific embodiment of the present invention, battery cover board assembly 200a ' comprising: main body cover plate 80a ', the first insulating sealer 60a ' and the second insulating sealer 60b ', positive terminal and negative terminal.
Particularly, main body cover plate 80a ' is provided with the first fairlead 81a ' and the second fairlead 81b ' (as shown in Figure 15 and Figure 16), first insulating sealer 60a ' has the first through hole 61a ', second insulating sealer 60b ' has the second through hole 61b ', positive terminal is through the 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 more above-mentioned embodiments, and the connecting ring 20 of positive terminal is made up of identical metal material with negative terminal, namely described in embodiments of the present invention positive terminal is aluminium terminal according to the above embodiment of the present invention, connecting ring 20 is the loop configuration identical with negative terminal material.
Positive pole can be applied to and negative pole is located on the battery of same one end according to the battery cover board assembly 200a ' of the embodiment of the present invention, one end that battery cover board assembly 200a ' is located at battery seals described battery, positive terminal can be the electrode terminal 100 become with copper according to the above embodiment of the present invention, negative terminal can for the terminal commonly used according to those of ordinary skill in the art, and connecting ring 20 is the loop configuration identical with negative terminal material.
Thus, positive terminal and negative terminal be each passed through the first insulating sealer 60a ' and the second insulating sealer 60b ' seal be arranged on main body cover plate 80a ' the first fairlead 81a ' and the second fairlead 81b ' in, battery cover board assembly 200a ' coordinates the end being arranged on battery, thus by battery complete seal.Because the electrode terminal 100 according to the embodiment of the present invention has above-mentioned technique effect, therefore according to the battery cover board assembly 200a ' of the embodiment of the present invention, also there is corresponding technique effect.That is: by arranging graded seal layer 30 between the different leading-out terminal 10 of material and connecting ring 20, and graded seal layer 30 is welded with leading-out terminal 10 and connecting ring 20 connection realizing leading-out terminal 10 and connecting ring 20 respectively, improve fastness and the stability of the connection between connecting ring and leading-out terminal, in welding process, graded seal layer 30 can also play and reduce solder and flow to effect on leading-out terminal 10, avoid solder temperature too high and cause leading-out terminal 10 to be out of shape, improve the fail safe of electrode terminal 100.
In order to ensure the sealing that electrode terminal 100 and main body cover plate 80a ' assemble, alternatively, according to one embodiment of present invention, this battery cover board assembly 200a ' also comprises: the second ring disk 70b ' being arranged on the first ring disk 70a ' in the first fairlead 81a ' and being arranged in the second fairlead 81b ', first insulating sealer 60a ' is supported on the first ring disk 70a ', second insulating sealer 60b ' is supported on the second ring disk 70b ', positive terminal and negative terminal are each passed through the first ring disk 70a ' be arranged in the first fairlead 81a ' and the second ring disk 70b ' sealing be arranged in the second fairlead 81b ' is arranged on main body cover plate 80a '.
Particularly, the outer peripheral face of positive terminal is provided with flange 12, flange 12 comprises the first annular flat part 121 be connected with leading-out terminal 10, the annular rake 122 extended downwardly towards outer incline from the outer of the first annular flat part 121 and the second annular flat part 123 from the outside horizontal-extending of annular rake 122, the periphery of the first annular flat part 121 along with the periphery of connecting ring 20 along concordant or stretch out and exceed the edge, periphery of connecting ring 20, wherein the first insulating sealer 60a ' to be clamped between the first ring disk 70a ' with the second annular flat part 123 and to weld with the second annular flat part 123.
In other words, the two ends of the first insulating sealer 60a ' weld together with the second annular flat part 123 of the first ring disk 70a ' and flange 12 respectively, first ring disk 70a is positioned between the first insulating sealer 60a ' and main body cover plate 80a ', the lower surface of the first ring disk 70a ' contacts with the first fairlead 81a ' of main body cover plate 80a ', and upper surface and the first insulating sealer 60a ' of the first ring disk 70a ' weld together.Thus, by arranging the first ring disk 70a ' between the first insulating sealer 60a ' and main body cover plate 80a ', positive terminal and the first insulating sealer 60a ', the first ring disk 70a ' and main body cover plate 80a ' are installed togather and form closed system, effectively can ensure the sealing of positive terminal and main body cover plate 80a '.
Further, in embodiments more of the present invention, the first insulating sealer 60a ' and the second insulating sealer 60b ' is ceramic-seal ring.Compared with rubber seal ring, adopt ceramic-seal ring effectively can extend the useful life of battery cover board assembly 200a '.Wherein, ceramic-seal ring can be the ceramic-seal rings such as Al2O3, AlN, BN or BeO.In addition, consider that ceramic-seal ring will be weldingly connected with the first ring disk 70a ', the second insulating sealer 60b ' and flange 12, and directly welding comparatively difficulty is carried out to ceramic-seal ring, therefore, further process can be done, to reduce the difficulty of welding to ceramic-seal ring.Such as, metalized can be carried out on the surface of ceramic-seal ring, to reach the object of easily welding.Particularly, can on the upper surface of ceramic-seal ring or lower surface nickel coating, zinc coat or sputtered aluminum layer etc.
As shown in figure 17, according to one embodiment of present invention, each in first through hole 61a ' and the second through hole 61b ' comprises hole section 611, interstitial hole section 612 and lower opening section 613, and the radial dimension of upper hole section 611 and lower opening section 613 is all greater than the radial dimension of interstitial hole section 612.
Particularly, for the first insulating sealer 60a ', the middle part of the first insulating sealer 60a ' is provided with the first through hole 61a ' of up/down perforation, the upper surface of the first insulating sealer 60a ' is provided with hole section 611, the lower surface of the first insulating sealer 60a ' is provided with lower opening section 613, and upper hole section 611 is all greater than the radial dimension of interstitial hole section 612 with the radial dimension of lower opening section 613, the radial dimension of interstitial hole section 612 is more than or equal to the radial dimension of the lower end 13 of positive terminal, can be set on positive terminal to make the first insulating sealer 60a '.
Further, the roof of lower opening section 613 is provided with annular groove 6131.Thus, during the lower surface contact weld of the upper surface of the first ring disk 70a ' and the first insulating sealer 60a ', need to avoid lower opening section 613 and annular groove 6131, distance between first ring disk 70a ' and positive terminal is strengthened, the creepage distance of the first insulating sealer 60a ' is increased, and breakdown voltage resistant ability improves.Meanwhile, the setting of annular groove 6131 also can avoid the solder trickling when welding trickle and be difficult to the problem of cleaning everywhere.
According to one embodiment of present invention, the upper end of each in first ring disk 70a ' and the second ring disk 70b ' is provided with upper flange 71a ' and lower end is provided with lower flange 72a ', each in first fairlead 81a ' and the second fairlead 81b ' comprises fairlead section 811a ' and lower fairlead section 812a ' (as shown in figure 15), the radial dimension of upper fairlead section 811a ' is greater than the radial dimension of lower fairlead section 812a ', the diapire that the lower end of the first ring disk 70a ' and the lower flange 72a ' of the first ring disk 70a ' are supported on the upper fairlead section 811a ' of the first fairlead 81a ' welds with the inwall of the upper fairlead section 811a ' of the first fairlead 81a ', the diapire that the lower end of the second ring disk 70b ' and the lower flange 72a ' of the second ring disk 70b ' are supported on the upper fairlead section 811a ' of the second fairlead 81b ' welds with the inwall of the upper fairlead section 811a ' of the second fairlead 81b '.
That is, first ring disk 70a ' is located in the upper fairlead section 811a ' of the first fairlead 81a ' of main body cover plate 80a ', the top and bottom of the first ring disk 70a ' are respectively equipped with upper flange 71a ' and lower flange 72a ', and upper flange 71a ' and lower flange 72a ' contact with the diapire of upper fairlead section 811a ' with the first insulating sealer 60a ' respectively.Thus, the first ring disk 70a ' is increased with the contact area of the first insulating sealer 60a ' and main body cover plate 80a ', welds more firm.
Other formations according to the battery cover board assembly 200a ' of the embodiment of the present invention are all known for the person of ordinary skill of the art, are not described in detail at this.
According to the battery of the embodiment of the present invention according to the battery cover board assembly 200(battery cover board assembly 200a of the embodiment of the present invention, battery cover board assembly 200a ').Battery cover board assembly 200(battery cover board assembly 200a, battery cover board assembly 200a ') be located at the end of battery with sealed cell.Due to the battery cover board assembly 200(battery cover board assembly 200a according to the embodiment of the present invention, battery cover board assembly 200a ') there is above-mentioned technique effect, therefore, the battery according to the embodiment of the present invention also has corresponding technique effect.
As shown in figure 18, multiple battery according to the above embodiment of the present invention and power brace 90 is comprised according to the battery pack 300 of the embodiment of the present invention.Wherein, battery has positive terminal and negative terminal, negative terminal can for according to the copper tip described in above-described embodiment, and power brace 90 is electrically connected adjacent battery, and the connecting ring 20 of power brace 90, negative terminal is made up of identical metal material with positive terminal.
In other words, negative terminal described is in embodiments of the present invention copper tip according to the above embodiment of the present invention, the electrode terminal that positive terminal can adopt those of ordinary skill in the art to commonly use, the connecting ring 20 on negative terminal is the loop configuration identical with positive terminal material with power brace 90.
Multiple battery according to the above embodiment of the present invention and power brace 90 is comprised according to the battery pack 300 in another embodiment of the present invention.Wherein, battery has positive terminal and negative terminal, positive terminal can be that power brace 90 is electrically connected adjacent battery according to the aluminium terminal in above-described embodiment, and the connecting ring 20 of power brace 90, positive terminal is made up of identical metal material with negative terminal.
That is, positive terminal described is in embodiments of the present invention aluminium terminal according to the above embodiment of the present invention, the electrode terminal that negative terminal can adopt those of ordinary skill in the art to commonly use, the connecting ring 20 on positive terminal is the loop configuration identical with negative terminal material with power brace 90.
Battery pack according to the above embodiment of the present invention can be connected in parallel mutually for multiple battery, also can be connected in series with each other, can also connect and Hybrid connections in parallel, below for the positive terminal of battery be aluminium terminal according to the above embodiment of the present invention, negative terminal is that copper tip according to the above embodiment of the present invention specifically describes according to the battery pack of the embodiment of the present invention.
When being connected in series between multiple battery, power brace 90 is connected with negative terminal with the positive terminal on two batteries be disposed adjacent respectively, namely one end of power brace 90 is connected with the positive terminal of a battery, then the other end is connected with the negative terminal of adjacent cell.Now, positive terminal is aluminium terminal, and negative terminal is copper tip, negative terminal, namely copper tip is arranged with the connecting ring 20 of aluminium matter, and power brace 90 is aluminium flake.
Particularly, power brace 90 is provided with two installing holes 91 arranged spaced apart, the negative terminal of a battery, namely copper tip is provided with the connecting ring 20 of aluminium matter, connecting ring 20 and the copper tip of aluminium matter are weldingly connected, copper tip is according to the electrode terminal 100 in the more above-mentioned embodiments of the present invention, has corresponding technique effect, and the connecting ring 20 of aluminium matter can be stablized with copper tip and welds.
An installing hole 91 of the power brace 90 of aluminium matter to be set on connecting ring 20 and to be weldingly connected with it, another installing hole 91 of power brace 90 is set in the positive terminal of adjacent cell, namely aluminium terminal is weldingly connected with it, the connecting ring 20 of aluminium matter is welding between same metal material with the power brace 90 of the power brace 90 of aluminium matter and aluminium matter with the connection between aluminium terminal, effectively prevent copper aluminium welding be connected caused connection not easily with unsteady problem, convenient welding and welding effect is good, the stronger and fail safe of vibration resistance improves, the performance of battery pack is improved, and the price of aluminium is comparatively cheap, preparation cost can be reduced to a certain extent.
When being connected in parallel between multiple battery, power brace 90 is connected with the positive terminal on two batteries be disposed adjacent or negative terminal respectively, namely one end of power brace 90 is connected with the positive terminal of a battery, then the other end of power brace 90 is connected with the negative terminal in adjacent cell.Now, positive terminal is aluminium terminal, and negative terminal is copper tip, copper tip is arranged with the connecting ring 20 of aluminium matter, and power brace 90 is aluminium flake.
Particularly, power brace 90 is provided with two installing holes 91 arranged spaced apart, the negative terminal of two batteries be disposed adjacent, namely copper tip is respectively equipped with the connecting ring 20 of aluminium matter, connecting ring 20 and the copper tip of aluminium matter are weldingly connected, copper tip is according to the electrode terminal 100 in the more above-mentioned embodiments of the present invention, has corresponding technique effect, and the connecting ring 20 of aluminium matter can be stablized with copper tip and welds.Two positive terminals be disposed adjacent, namely on aluminium terminal then without the need to arranging connecting ring 20.
Two installing holes 91 on the power brace 90 be connected with the negative terminal of adjacent two batteries are set in adjacent two negative terminals respectively, on the connecting ring 20 of the i.e. aluminium matter of copper tip, and be weldingly connected with two connecting rings 20 respectively, with the positive terminal of adjacent two batteries, namely two installing holes 91 on the power brace 90 that is connected of aluminium terminal are set in two positive terminals respectively, namely aluminium terminal is weldingly connected with it respectively, the connecting ring 20 of aluminium matter is welding between same metal material with the power brace 90 of the power brace 90 of aluminium matter and aluminium matter with the connection between aluminium terminal, effectively prevent copper aluminium welding be connected caused connection not easily with unsteady problem, convenient welding and welding effect is good, the stronger and fail safe of vibration resistance improves, the performance of battery pack is improved, and the price of aluminium is comparatively cheap, preparation cost can be reduced to a certain extent.
Other formations according to the battery pack of the embodiment of the present invention are all known for the person of ordinary skill of the art, are not described in detail at this.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, those of ordinary skill in the art can change above-described embodiment within the scope of the invention when not departing from principle of the present invention and aim, revising, replacing and modification.
Claims (45)
1. an electrode terminal, is characterized in that, comprising:
Leading-out terminal;
Connecting ring, described connecting ring is made up of different metal materials from described leading-out terminal, and described connecting ring is set in the upper end of described leading-out terminal; And
Graded seal layer, described graded seal layer to be located between described leading-out terminal and described connecting ring and to weld with described connecting ring and described leading-out terminal respectively.
2. electrode terminal according to claim 1, is characterized in that, described graded seal layer comprises the sleeve part between internal perisporium and the upper end of described leading-out terminal being located at described connecting ring.
3. electrode terminal according to claim 1, it is characterized in that, the outer peripheral face of described leading-out terminal is provided with flange, described graded seal layer comprises the ring part between upper surface and the lower surface of described connecting ring being located at described flange, and the lower surface of described connecting ring is welded with described flange by described ring part.
4. electrode terminal according to claim 1, it is characterized in that, the outer peripheral face of described leading-out terminal is provided with flange, and described graded seal layer comprises the sleeve part between the ring part between upper surface and the lower surface of described connecting ring being located at described flange and the periphery wall being located at the internal perisporium of described connecting ring and the upper end of described leading-out terminal.
5. electrode terminal according to claim 1, it is characterized in that, the outer peripheral face of described leading-out terminal is provided with flange, described connecting ring is positioned at above described flange, described flange comprises the first annular flat part be connected with described leading-out terminal, second annular flat part of the annular rake extended downwardly towards outer incline from the outer of described first annular flat part and the outside horizontal-extending in outer from described annular rake, the periphery of described first annular flat part along with the periphery of described connecting ring along concordant or stretch out and exceed the edge, periphery of described connecting ring, described graded seal layer comprises the ring part be located between described first annular flat part and the lower surface of described connecting ring.
6. electrode terminal according to claim 5, it is characterized in that, described graded seal layer also comprises sleeve part, and the lower end of described sleeve part is connected with the inner edge of described ring part, and described sleeve part is located between the outer peripheral face of the upper end of described leading-out terminal and the internal perisporium of described connecting ring.
7. electrode terminal according to claim 6, is characterized in that, described sleeve part and described ring part are integrally formed.
8. electrode terminal according to claim 7, is characterized in that, described graded seal layer also comprises top cover portion, and described top cover portion is located on the upper surface of the upper end of described leading-out terminal.
9. electrode terminal according to claim 8, is characterized in that, described sleeve part, described ring part and described top cover portion are integrally formed.
10. electrode terminal according to claim 5, is characterized in that, described flange and described leading-out terminal are integrally formed.
11. electrode terminals according to any one of claim 1-10, it is characterized in that, described graded seal layer is mild steel pad, nickel pad, stainless steel pad or iron pad.
12. electrode terminals according to any one of claim 1-11, it is characterized in that, described graded seal layer is for being arranged on the surface-treated layer on the surface on described connecting ring and/or described leading-out terminal, and described surface-treated layer is electrodeposited coating, sprayed coating, anodic oxide coating or vacuum sputtering layer.
13. electrode terminals according to claim 1, is characterized in that, have weld groove between the upper end of described connecting ring and described leading-out terminal.
14. electrode terminals according to claim 13, is characterized in that, the upper surface of described connecting ring flushes with the upper surface of described leading-out terminal, and described weld groove is located between the inner edge of the edge, periphery of the upper end of described leading-out terminal and the upper end of described connecting ring.
15. electrode terminals according to claim 14, is characterized in that, described weld groove is annular and has V-arrangement cross section.
16. electrode terminals according to claim 14, is characterized in that, described weld groove is formed by the chamfering at least one in the inner edge of the edge, periphery of the upper end of described leading-out terminal and the upper end of described connecting ring or rounding.
17. electrode terminals according to claim 13, is characterized in that, the upper surface of described leading-out terminal is positioned at the centre bore of described connecting ring, and the internal perisporium of described connecting ring and the upper surface of described leading-out terminal limit described weld groove.
18. electrode terminals according to claim 17, is characterized in that, the periphery of the upper end of described leading-out terminal is along being provided with chamfering or rounding.
19. electrode terminals according to claim 17, it is characterized in that, the centre bore of described connecting ring comprises upper hole section and bottom hole section, and the radial dimension of described upper hole section is greater than the radial dimension of described bottom hole section, and the upper end of described leading-out terminal is engaged in described bottom hole section.
20. electrode terminals according to claim 19, is characterized in that, the upper surface of described leading-out terminal with in described bottom hole section along concordant.
21. electrode terminals according to claim 13, is characterized in that, described weld groove is located between the outside wall surface of the upper end of described leading-out terminal and the internal face of described connecting ring.
22. electrode terminals according to claim 1, it is characterized in that, the outer peripheral face of described leading-out terminal is provided with flange, described connecting ring is positioned at above flange, and at least one in the upper surface of described flange and the lower surface of described connecting ring is provided with the boss between the upper surface and the lower surface of described connecting ring of described flange.
23. electrode terminals according to claim 22, it is characterized in that, described flange comprises the second annular flat part of the first annular flat part be connected with described leading-out terminal, the annular rake extended downwardly towards outer incline from the outer of described first annular flat part and the outside horizontal-extending in outer from described annular rake, the periphery of described first annular flat part along with the periphery of described connecting ring along concordant or stretch out and exceed the edge, periphery of described connecting ring.
24. electrode terminals according to claim 23, is characterized in that, described boss is located on described first annular flat part.
25. electrode terminals according to claim 22, is characterized in that, described flange and described leading-out terminal are integrally formed.
26. electrode terminals according to claim 25, is characterized in that, arc transition between the lower surface of described first annular flat part and the outer peripheral face of described leading-out terminal.
27. electrode terminals according to claim 22, is characterized in that, described boss is annular.
28. electrode terminals according to claim 27, is characterized in that, described boss is multiple, and described multiple boss is arranged with one heart and radial direction along described leading-out terminal is spaced apart from each other.
29. electrode terminals according to claim 22, is characterized in that, described boss is located on the lower surface of described connecting ring.
30. electrode terminals according to any one of claim 1-29, it is characterized in that, described leading-out terminal is copper tip, and described connecting ring is aluminium ring.
31. electrode terminals according to any one of claim 1-29, it is characterized in that, described leading-out terminal is aluminium terminal, and described connecting ring is copper ring.
32. 1 kinds of battery cover board assemblies, is characterized in that, comprising:
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 is through described through hole and described fairlead, and described electrode terminal is the electrode terminal according to any one of claim 1-31.
33. 1 kinds of battery cover board assemblies, is characterized in that, comprising:
Main body cover plate, described main body cover plate is provided with the first fairlead and the second fairlead;
There is the first insulating sealer of the first through hole and there is the second insulating sealer of the second through hole;
Positive terminal and negative terminal, described positive terminal is through described first through hole and described first fairlead, and described negative terminal passes described second through hole and described second fairlead,
Described negative terminal is the electrode terminal described in claim 1-30, and the connecting ring of described negative terminal is made up of identical metal material with described positive terminal.
34. battery cover board assemblies according to claim 33, it is characterized in that, also comprise: the second ring disk being arranged on the first ring disk in described first fairlead and being arranged in described second fairlead, described first insulating sealer is supported on described first ring disk, and described second insulating sealer is supported on described second ring disk.
35. battery cover board assemblies according to claim 34, it is characterized in that, the outer peripheral face of described negative terminal is provided with flange, described flange comprises the first annular flat part be connected with described leading-out terminal, second annular flat part of the annular rake extended downwardly towards outer incline from the outer of described first annular flat part and the outside horizontal-extending in outer from described annular rake, the edge, periphery of described first annular flat part and the periphery of described connecting ring exceed the edge, periphery of described connecting ring along concordant or extension, wherein said first insulating sealer to be clamped between described first ring disk with described second annular flat part and to weld with described second annular flat part.
36. 1 kinds of battery cover board assemblies, is characterized in that, comprising:
Main body cover plate, described main body cover plate is provided with the first fairlead and the second fairlead;
There is the first insulating sealer of the first through hole and there is the second insulating sealer of the second through hole;
Positive terminal and negative terminal, described positive terminal is through described first insulating sealer and described first fairlead, and described negative terminal passes described second insulating sealer and described second fairlead,
The electrode terminal of described positive terminal according to any one of claim 1-29 and 31, and the connecting ring of described positive terminal is made up of identical metal material with described negative terminal.
37. battery cover board assemblies according to claim 36, it is characterized in that, also comprise: the second ring disk being arranged on the first ring disk in described first fairlead and being arranged in described second fairlead, described first insulating sealer is supported on described first ring disk, and described second insulating sealer is supported on described second ring disk.
38. according to battery cover board assembly according to claim 37, it is characterized in that, the outer peripheral face of described positive terminal is provided with flange, described flange comprises the first annular flat part be connected with described leading-out terminal, second annular flat part of the annular rake extended downwardly towards outer incline from the outer of described first annular flat part and the outside horizontal-extending in outer from described annular rake, the edge, periphery of described first annular flat part and the periphery of described connecting ring exceed the edge, periphery of described connecting ring along concordant or extension, wherein said first insulating sealer to be clamped between described first ring disk with described second annular flat part and to weld with described second annular flat part.
39. battery cover board assemblies according to claim 33 or 36, it is characterized in that, described first insulating sealer and the second insulating sealer are ceramic-seal ring.
40. battery cover board assemblies according to claim 33 or 36, it is characterized in that, each in described first through hole and the second through hole comprises hole section, interstitial hole section and lower opening section, and the radial dimension of described upper hole section and described lower opening section is all greater than the radial dimension of described interstitial hole section.
41. battery cover board assemblies according to claim 40, is characterized in that, the roof of described lower opening section is provided with annular groove.
42. battery cover board assemblies according to claim 40, it is characterized in that, the upper end of each in described first ring disk and the second ring disk is provided with upper flange and lower end is provided with lower flange, each in described first fairlead and the second fairlead comprises fairlead section and lower fairlead section, the radial dimension of described upper fairlead section is greater than the radial dimension of described lower fairlead section, the diapire that the lower end of described first ring disk and the lower flange of described first ring disk are supported on the upper fairlead section of described first fairlead welds with the inwall of the upper fairlead section of described first fairlead, the diapire that the lower end of described second ring disk and the lower flange of described second ring disk are supported on the upper fairlead section of described second fairlead welds with the inwall of the upper fairlead section of described second fairlead.
43. 1 kinds of batteries, is characterized in that, comprise the battery cover board assembly according to any one of claim 32-42.
44. 1 kinds of battery pack, is characterized in that, comprising:
Multiple battery, described battery has positive terminal and negative terminal, and wherein said negative terminal is for being the electrode terminal according to any one of claim 1-30 according to claim;
Power brace, described power brace is electrically connected adjacent described battery, and the connecting ring of described power brace, described negative terminal is made up of identical metal material with described positive terminal.
45. 1 kinds of battery pack, is characterized in that, comprising:
Multiple battery, described battery has positive terminal and negative terminal, and wherein said positive terminal is the electrode terminal according to any one of claim 1-29 and 31;
Power brace, described power brace is electrically connected adjacent described battery, and the connecting ring of described power brace, described positive terminal is made up of identical metal material with described negative terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310753849.1A CN104752676B (en) | 2013-12-31 | 2013-12-31 | Electrode terminal, there is its battery cover board assembly, battery and battery pack |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310753849.1A CN104752676B (en) | 2013-12-31 | 2013-12-31 | Electrode terminal, there is its battery cover board assembly, battery and battery pack |
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| Publication Number | Publication Date |
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| CN104752676A true CN104752676A (en) | 2015-07-01 |
| CN104752676B CN104752676B (en) | 2017-12-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161640A (en) * | 2015-08-26 | 2015-12-16 | 惠州亿纬锂能股份有限公司 | Cover plate assembly and battery comprising same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040023107A1 (en) * | 2002-05-08 | 2004-02-05 | Naoya Nakanishi | Battery |
| US20110300435A1 (en) * | 2010-06-04 | 2011-12-08 | Sangwon Byun | Rechargeable battery |
| CN102347464A (en) * | 2010-07-21 | 2012-02-08 | Sb锂摩托有限公司 | Rechargeable battery |
| WO2013094000A1 (en) * | 2011-12-19 | 2013-06-27 | 日立ビークルエナジー株式会社 | Welded structure in battery, method for forming same, secondary battery cell, and secondary battery module |
| CN103378321A (en) * | 2012-04-20 | 2013-10-30 | 比亚迪股份有限公司 | Cover plate component and battery with same |
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2013
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040023107A1 (en) * | 2002-05-08 | 2004-02-05 | Naoya Nakanishi | Battery |
| US20110300435A1 (en) * | 2010-06-04 | 2011-12-08 | Sangwon Byun | Rechargeable battery |
| CN102347464A (en) * | 2010-07-21 | 2012-02-08 | Sb锂摩托有限公司 | Rechargeable battery |
| WO2013094000A1 (en) * | 2011-12-19 | 2013-06-27 | 日立ビークルエナジー株式会社 | Welded structure in battery, method for forming same, secondary battery cell, and secondary battery module |
| CN103378321A (en) * | 2012-04-20 | 2013-10-30 | 比亚迪股份有限公司 | Cover plate component and battery with same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105161640A (en) * | 2015-08-26 | 2015-12-16 | 惠州亿纬锂能股份有限公司 | Cover plate assembly and battery comprising same |
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| CN104752676B (en) | 2017-12-01 |
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