CN102420295A - Battery core cover, battery core cover assembly and manufacturing method thereof - Google Patents
Battery core cover, battery core cover assembly and manufacturing method thereof Download PDFInfo
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- CN102420295A CN102420295A CN2011103951819A CN201110395181A CN102420295A CN 102420295 A CN102420295 A CN 102420295A CN 2011103951819 A CN2011103951819 A CN 2011103951819A CN 201110395181 A CN201110395181 A CN 201110395181A CN 102420295 A CN102420295 A CN 102420295A
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- battery
- battery core
- lug
- core cap
- cover plate
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- 238000009413 insulation Methods 0.000 claims description 62
- 238000000429 assembly Methods 0.000 claims description 29
- 230000000712 assembly Effects 0.000 claims description 29
- 239000000463 material Substances 0.000 claims description 21
- 238000003475 lamination Methods 0.000 claims description 19
- 238000009434 installation Methods 0.000 claims description 14
- 238000003466 welding Methods 0.000 claims description 10
- 238000013459 approach Methods 0.000 claims description 8
- 239000004411 aluminium Substances 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 238000001746 injection moulding Methods 0.000 claims description 4
- 229910000570 Cupronickel Inorganic materials 0.000 claims description 3
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 3
- 239000003792 electrolyte Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 10
- 238000013461 design Methods 0.000 description 6
- 230000004888 barrier function Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 229910001369 Brass Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
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- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
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- 229910000906 Bronze Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910032387 LiCoO2 Inorganic materials 0.000 description 1
- 229910052493 LiFePO4 Inorganic materials 0.000 description 1
- 229910002993 LiMnO2 Inorganic materials 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- KLARSDUHONHPRF-UHFFFAOYSA-N [Li].[Mn] Chemical compound [Li].[Mn] KLARSDUHONHPRF-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- CKFRRHLHAJZIIN-UHFFFAOYSA-N cobalt lithium Chemical compound [Li].[Co] CKFRRHLHAJZIIN-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
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- 229910001416 lithium ion Inorganic materials 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- RSNHXDVSISOZOB-UHFFFAOYSA-N lithium nickel Chemical compound [Li].[Ni] RSNHXDVSISOZOB-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a battery core cover, a battery core cover assembly comprising the battery core cover and a manufacturing method of the battery core cover assembly. The battery core cover comprises a battery core cover plate (30), conductive terminals (10) and battery core cover lugs (41, 42) which are respectively arranged on two opposite sides of the battery core cover plate, a fixing piece (50) and an insulating pad (70), wherein the battery core cover, the conductive terminals and the battery core cover lugs are connected together by the fixing piece, and the conductive terminals, the battery core cover and the battery core cover lugs are electrically isolated by the insulating pad. Compared with the prior art, the battery core cover saves space and is firmly connected; the battery core cover component can prevent the electrolyte in the battery from leaking and avoid short circuit.
Description
Technical field
The present invention relates to a kind of battery structure, relate in particular to a kind of battery core cap, comprise the manufacturing approach of battery cap assemblies and this battery cap assemblies of this battery core cap.
Background technology
Generally speaking, can battery be divided into two kinds of column type and squares according to the shape of battery, the composition of battery then comprises battery container (housing of battery outside), battery core cap, and the battery structure of inside; The battery structure is inserted in the battery container, again with battery core cap and battery container with mode driving fits such as welding after, inject the electrolyte at last in the battery, promptly accomplish the main manufacturing process of battery.
The battery structure mainly is made up of materials such as positive pole, negative pole, barrier films, and is full of electrolyte usually between battery and battery structure.Positive electrode determines the kind of battery usually; For example lithium cobalt battery (LiCoO2), lithium-manganese cell (LiMnO2), lithium nickel-based battery (LiNiO2) and iron lithium phosphate battery (LiFePO4) etc.; Can be generally called lithium ion battery, still have other kind certainly, like ni-mh, nickel-cadmium cell etc.Usually, the shape of battery relates to the processing procedure and the design of battery structure, cylinder battery for example, and its battery structure is generally coiling body, and square battery, its battery structure is generally the lamination body.
The processing procedure of lamination body generally comprises Z font laminated layer method, and this method please refer within No. 101485033 announcements of Chinese patent CN to be held; Barrier film bag method, this method please refer within No. 101174681 announcements of Chinese patent CN to be held; Barrier film microtomy, this method please refer within No. 101405911 announcements of Chinese patent CN to be held.With the laminated layer method is example, just/negative pole be by just/after negative material is coated pole piece, add lug so that electricity is derived, at last again with barrier film just separating/negative pole forms, and so then avoids short circuit.If anodal lug with negative pole is all same direction, then the battery core cap of battery must be done corresponding design, lead-out terminal is made in battery covers.Because lead-out terminal is all at homonymy, and can be made in battery usually and covers, therefore, designs such as the insulation of battery core cap, connected mode just seem quite important.Good insulating Design can be avoided internal short-circuit of battery; Good connected mode can make full use of the space of battery container inside, has characteristics such as firm anti-collision again.
Yet, existing square battery be designed with several blind spots.
At first, the fixed form of the battery core cap splicing ear of square battery is normally utilized screw and directly the lug of lamination body is locked in battery and covers, and specifically please refer to Chinese patent and holds within disclosing for CN101174681 number; Or utilize rivet directly the lug riveting of lamination body to be covered in battery.Yet in the occasion of various practical applications, the mode of above-mentioned physical fixation is loosening easily, so cause the generation of leakage situation most probably.In addition, the lug of each pole piece also is to connect with physics mode in the lamination body, and the contact internal resistance is bigger, and unit is a milliohm, and the lamination body lug that is generally ultrasonic bonding contacts quite a few times of internal resistance.
Secondly, touch the battery core cap and cause the possibility of short circuit, must do extra insulating Design again, so increased the whole volume of battery for fear of the lug of inside.
Summary of the invention
The object of the present invention is to provide a kind of battery core cap, this battery core cap is saved the space and is connected firmly.
Concrete technical scheme is following: a kind of battery core cap comprises the battery cover plate, is separately positioned on conducting terminal and battery core cap lug, retaining piece and the insulation cushion of the relative both sides of battery cover plate; Said retaining piece links together said battery core cap, conducting terminal, battery core cap lug, and said insulation cushion is with said conducting terminal, said battery core cap and said battery core cap lug electrical isolation.
Further, said conducting terminal comprises and is installed on installation portion that battery covers and the junction that extends and can be connected with external equipment from said installation portion.
Further, said junction has helicitic texture.
Further, said retaining piece is a rivet, and said conducting terminal, battery cover plate, battery core cap lug and insulation cushion pass through rivet in one.
Further, said insulation cushion comprise be positioned at battery cover plate one side, in order to first insulation division of said conducting terminal of electric insulation and battery cover plate, be positioned at battery cover plate opposite side, be used for second insulation division of said battery cover plate of electric insulation and battery core cap lug.
Further, said insulation is paid somebody's debt and expected repayment later and is comprised the connecting portion that connects first insulation division and second insulation division and said retaining piece of electric insulation and battery cover plate.
Further, said battery cover plate offers and covers the hole and supply said retaining piece to pass, and the connecting portion of said insulation cushion is coated on the inwall of said lid hole.
Further, the cross section of said insulation cushion is I shape.
Further, said conducting terminal is the step screw, is to make with the cold stamping mode to form.
Further, said battery core cap lug comprises positive pole ear and negative lug.
Further, the material of said positive pole ear is an aluminium, and the material of said negative lug is copper nickel plating.
Further, said battery core cap lug is a laminated structure.
Further, said battery core cap further comprises an insulating trip, and said insulating trip is a laminated structure.
Further, offering opening on the said insulating trip supplies said battery core cap lug to pass.
The present invention also aims to provide a kind of battery cap assemblies, this battery cap assemblies can prevent that the electrolyte in the battery from spilling, avoiding short circuit, saving the space and be connected firmly.
Concrete technical scheme is following: a kind of battery cap assemblies, comprise battery, and said battery comprises lamination body and lamination body lug, said battery cap assemblies also comprises aforesaid battery core cap.
Further, said lamination body is by some stacked the forming of pole piece, and each pole piece has a lug, and said lamination body lug is that to be welded through the ultrasonic bonding mode by some lugs be that one forms, and comprises positive pole ear and negative lug.
Further, said lamination body lug and said battery core cap lug electrically connect, and form M type extreme ear structure.
The present invention also aims to provide a kind of manufacturing approach of battery cap assemblies, the battery cap assemblies that this method produces can prevent that the electrolyte in the battery from spilling, avoiding short circuit, saving the space and be connected firmly.
Concrete technical scheme is following: a kind of manufacturing approach of battery cap assemblies may further comprise the steps:
The battery cover plate is provided, said battery cover plate is inserted injection molding machine;
Injection mo(u)lding insulation cushion on said battery cover plate;
Provide the step screw to do conducting terminal, said conducting terminal is placed battery cover plate top;
Battery core cap lug is provided, said battery core cap lug is placed the battery under;
Rivet is provided, and said rivet is fixed said conducting terminal, said insulation cushion, said battery cover plate and said battery core cap lug with the riveted joint mode;
The battery structure is provided, the lug of said battery structure and battery core cap lug are welded in one with the mode of supersonic welding.
Further, also comprise with the cold-stamped mode and make said step screw.
Further, before the lug of battery structure and battery core cap lug welded, also comprise the step that lug and battery core cap lug with the battery structure bend respectively.
Compared to prior art, battery core cap of the present invention is saved the space and is connected firmly; The battery cap assemblies can prevent that the electrolyte in the battery from spilling, avoiding short circuit, saving the space and be connected firmly.
Description of drawings
Fig. 1 is the stereogram that battery cap assemblies of the present invention is assembled in battery.
Fig. 2 is the schematic perspective view of battery cap assemblies of the present invention.
Fig. 3 is another schematic perspective view (battery case is omitted) of battery cap assemblies of the present invention.
Fig. 4 is the schematic perspective view at another visual angle of battery cap assemblies of the present invention.
Fig. 5 is partial perspective view's (battery case is omitted) of battery shown in Figure 1.
Fig. 6 is the schematic side view of battery cap assemblies of the present invention.
Fig. 7 is the cell core lug of battery shown in Figure 1 and the sketch map before the welding of battery core cap lug.
Fig. 8 is the combination sketch map of Fig. 6.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer, describe the present invention below in conjunction with accompanying drawing and specific embodiment.
See also Fig. 1 to shown in Figure 5, battery cap assemblies 300 of the present invention is contained in the battery case 200 of battery 100.Be full of electrolyte in the battery case 200.Said battery cap assemblies 300 comprises battery core cap (not label) and battery structure 20.Battery core cap of the present invention comprises battery cover plate 30, be arranged on the conducting terminal 10 of battery cover plate 30 1 sides, be arranged on battery core cap lug 41,42, retaining piece 50 and the insulation cushion 70 of battery cover plate 30 opposite sides.
Like Fig. 2, shown in Figure 3, said conducting terminal 10 comprises installation portion 12 and extends from installation portion 12 and is used for the junction 11 that is connected with external equipment (figure do not show).In the present embodiment, said junction 11 be provided with screw thread 111 in order to external equipment screw-threaded coupling, said installation portion 12 is oblong.Be appreciated that the shape of installation portion 12 does not have special restriction as long as adapt to the width of battery 100.Said installation portion 12 is provided with the riveted holes that runs through installation portion 12.The cross section of said conducting terminal 10 is step-like.Said conducting terminal 10 comprises positive terminal 10a and negative terminal 10b, and main material is brass.In order to distinguish positive pole and negative pole, can be in the extra rete that adds outside the brass.Said rete is to electroplate on conducting terminal 10, and material is generally nickel or bronze.Said conducting terminal 10 also is called pole as lead-out terminal, and main application is that the electricity with battery structure 20 exports to battery 100 outsides in battery 100, and can lock.
Said conducting terminal 10 is made with the cold stamping mode, comprises the steps:
Long copper rod is cut into charge bar, and said charge bar is long to be the 15-20 millimeter;
Said charge bar is put into cold punching die one end is flattened into round pie, this charge bar of punch die forms in order to being installed to the installation portion 12 on the battery 100, and installation portion 12 is cut into oblong;
Use filature on charge bar, to rub junction 11 with screw thread 111;
Cleaning step, said cleaning method are ultrasonic waves for cleaning; And
On the conducting terminal after the cleaning 10, form rete, electroplate different materials respectively according to the positive pole or the negative pole of conducting terminal 10.
The torsion of the conducting terminal 10 that comes out with the manufacturing of cold stamping mode is bigger, can reach 10 newton. rice.In the prior art, mainly utilize car to cut the processing and manufacturing conducting terminal, yet it is less to cut the conducting terminal torsion that processing and manufacturing comes out with car, at most to 3 newton. rice promptly can be slided tooth.As if said sliding tooth is meant that just beginning to lock screw has locking, but lock dark phenomenon that a bit comes loose again again.Therefore, be not easy to take place sliding tooth more with the produced conducting terminal 10 of cold stamping mode.
Said battery structure 20 comprises lamination body (not label) and cell core lug 21,22, and said cell core lug 21,22 is with battery core cap lug 41,42 machineries and be electrically connected, and detail will be set forth at this paper back segment.Said cell core lug 21,22 comprises anode pole piece lug 21 and cathode pole piece lug 22.Said lamination body is to form by the multi-disc pole piece is stacked, and each pole piece has a lug.Said positive and negative cell core lug 21,22 is welded into one with the mode of ultrasonic bonding by the lug on the multi-disc pole piece respectively and forms.
The material of said battery cover plate 30 can be consistent with battery case 200, such as all can be aluminium.Being shaped as of said battery cover plate 30 is square.Its size design mainly is the openings of sizes of matching battery shell 200, so that be bonded with each other.Simultaneously, reserving four lid holes of running through (figure does not show) supplies insulation cushion 70 and retaining piece 50 to wear.Said battery cover plate 30 is with battery 100 sealing, and the inner surfaces in four lid holes all coat with insulation cushion 70, again with retaining piece 50, such as rivet etc., passes wherein with riveted joint.
Said battery core cap lug comprises positive battery core cap lug 41 and negative battery core cap lug 42.The material of said positive and negative battery core cap lug 41,42 is different, and the material of positive battery core cap lug 41 is an aluminium, and the material of negative battery core cap lug 42 is copper nickel plating.The selection principle of said battery core cap ear pole material is that positive battery core lug 21 materials need connected positive battery core cap lug 41 materials consistent, and negative pole also together.Said battery core cap lug 41,42 is a sheet metal, and its width depends on the size of overcurrent.Electric current is big more, and the width of battery core cap lug 41,42 is big more.For example: the battery core cap lug width of 25 ampere-hours is generally 20 ~ 25 millimeters, and the battery core cap lug width of 16 ampere-hours is generally 15 ~ 20 millimeters, and the battery core cap lug width of 12 ampere-hours is generally 10 ~ 15 millimeters.Said battery core cap lug is riveted on the battery cover plate 30 by rivet 50, is used for and the cell core lug welding, and forms M font extreme ear structure jointly with cell core lug.
Said positive battery core cap lug 41 and anode pole piece lug 21 are connected through ultrasonic bonding.Said negative battery core cap lug 42 and cathode pole piece lug 22 are connected through ultrasonic bonding.Said battery cap assemblies 300 also can further comprise the insulating trip 60 that is arranged between battery structure 20 and the battery cover plate 30.Further be provided with through hole (not label) on the said insulating trip 60, said battery core cap lug 41,42 passes the through hole and cell core lug 21,22 machineries of insulating trip 60 and is electrically connected.
See also Fig. 3 to shown in Figure 6, said cell core lug 21,22 comprises first connecting portion 211,221 that is connected with battery structure 20 lamination bodies and first joint portion 212,222 that is connected with battery core cap lug 41,42.Said battery core cap lug 41,42 comprises second connecting portion 411,421 that is connected with battery cover plate 30 and second joint portion 412,422 that is connected and is connected with first joint portion 212,222 with second connecting portion 411,421.Cross section after said positive battery core lug 21 and positive battery core cap lug 41 machineries and the electric connection is the M font.Cross section after said negative battery core lug 22 and negative battery core cap lug 42 machineries and the electric connection roughly is the M font.Adopt the connected mode of this kind M font, the distance between then said battery cover plate 30 and the battery structure 20 is smaller or equal to 10 millimeters, thus the waste of minimizing battery container 200 inner spaces.The connected mode of this kind M font is easy to use ultrasonic bonding, and ultrasonic bonding can reduce the contact internal resistance.In addition, this kind M font extreme ear structure makes that also connection is more firm.
As shown in Figure 2, said retaining piece 50 reaches battery cover plate 30, conducting terminal 10, battery core cap lug 41,42 machineries to link together electrically.In the present embodiment, said retaining piece 50 is a rivet, and said conducting terminal 10, battery cover plate 30, battery core cap lug 41,42 and insulation cushion 70 are retained on together through rivet.The material of rivet is mainly aluminium, also can be the material of red metal or other equal performances.Said rivet 50 be shaped as round column, have the head of similar ladder type, be positioned at the below of battery cover plate 30 than major part.Said rivet 50 is of a size of: head width can be 7 ~ 10 millimeters, and thickness can be 0.8 ~ 1.5 millimeter, and bar directly can be 3.5 ~ 5 millimeters, and height is done corresponding adjustment according to the size of battery cover plate 30.The hole wall of four riveted holes on conducting terminal 10 installation portions 12 all coats with insulation cushion 70, rivet 50 is passed rivet again.In the present embodiment, utilize riveted joint mode fixed conductive terminals 10, insulation cushion 70, battery cover plate 30 and battery core cap lug 41,42.
Said insulating trip 60 is an insulator, and its material can be plastics.Said insulating trip 60 be shaped as a sheet insulator, can be squarely, marks the twice square aperture in the middle of the lamellar body, pass this insulating trip 60 in order to battery core cap lug 41,42.The effect of said insulating trip 60 is to avoid cell core lug 21,22 to touch battery cover plate 30 with the part that battery core cap lug 41,42 is connected.
Like Fig. 6 and shown in Figure 7, said insulation cushion 70 comprises first insulation division 71 in order to electric insulation conducting terminal 10 and battery cover plate 30 that is positioned at battery cover plate 30 1 sides, be positioned at battery cover plate 30 opposite sides is used for second insulation division 72 of electric insulation battery cover plate 30 and battery core cap lug 41,42 and is positioned at the connecting portion (figure does not show) that is connected first insulation division 71 and second insulation division 72 and electric insulation retaining piece 50 and battery cover plate 30.Said first insulation division 71 partly is coated on battery cover plate 30 tops; Said second insulation division 72 partly is coated on battery cover plate 30 belows; On the said connecting portion clad battery core cover plate 30 lid hole inwalls, said lid hole is to make rivet 50 can pass battery cover plate 30.The material of said insulation cushion 70 is PP (polypropylene), also can be the material of other insulation and electrolyte resistance corrosion, does not enumerate one by one in this.Said insulation cushion 70 has the I shape section shape.Overlook on the direction to being square, and four end fillets.Be appreciated that ground, said insulation cushion 70 areas must be bigger than the area of conducting terminal 10 installation portions 12, and also the area than battery core cap lug 41,42 is big, overlooks and also can be other shapes on the direction.The processing method of said insulation cushion 70 is that battery cover plate 30 is inserted injection molding machine earlier, makes the insulation system that cross section is an I shape with the mode of ejection formation then.Because conducting terminal 10, battery cover plate 30, cell core lug 21,22 reach battery core cap lug 41,42 and are metal material, so the purposes of said insulation cushion 70 is for avoiding the both positive and negative polarity short circuit.Particularly, said insulation cushion 70 be used for isolating simultaneously battery cover plate 30 and rivet 50, isolate battery cover plate 30 and battery core cap lug 41,42, being electrically connected between isolation battery cover plate 30 and the conducting terminal 10.In the present invention, said insulating trip 60 constitutes double-layer insulating structure with insulation cushion 70, makes that the insulation effect of battery is better.
The manufacturing approach of said battery cap assemblies 300 may further comprise the steps:
Injection mo(u)lding insulation cushion 70 on battery cover plate 30;
Conducting terminal 10 is provided, conducting terminal 10 is placed battery cover plate 30 1 sides;
Battery core cap lug 41,42 is provided, battery core cap lug 41,42 is placed battery cover plate 30 opposite sides;
Retaining piece 50 is provided, said retaining piece 50 with battery cover plate 30, insulation cushion 70, conducting terminal 10 and battery cover lug 41,42 machineries and electrically fixing link together;
With said battery core cap lug 41,42 and cell core lug 21,22 with the mode machinery of ultrasonic bonding and be electrically connected.
In above step, said conducting terminal 10, battery core cap lug 41,42 and retaining piece 50 all insulate with battery cover plate 30 through insulation cushion 70 mutually.Said cell core lug 21,22 is to use the supersonic welding mode that both welding are dissolved in the machinery and the electric connection of battery core cap lug 41,42.
As shown in Figure 8; Before welding battery core cap lug and the cell core lug; Second connecting portion 411,421 with battery core cap lug is riveted on the battery cover plate 30 earlier, makes second connecting portion 411,421 vertical with second joint portion 412,422 bending of battery core cap lug again.Simultaneously, make the angle of the win connecting portion 211,221 and first joint portion 212,222 also be 90 degree battery core cap lug also bending, also promptly vertical each other.Then, battery core cap lug is corresponding in twos according to positive and negative electrode with cell core lug.Then, with the supersonic welding mode both are welded in one.At last, battery cover plate 30 upset is made after fixing said cell core lug 21,22 roughly be the M font with cross section after battery core cap lug 41,42 is connected, as shown in Figure 6, also i.e. formation M font lug syndeton at last.
In the present invention, battery cap assemblies 300 uses the fixed form of riveted joint, can avoid producing the loosening phenomenon of similar screw, and can avoid the possibility of battery leakage, and overall structure is able to simplify.In addition, battery cap assemblies of the present invention avoids the respond well while of short circuit can realize a large amount of productions.In addition, cell core lug 21,22 and battery core cap lug 41,42 adopt the connected mode and the recessed M font that is converted into of ultrasonic bonding, thereby can save space and firm welding.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope that the present invention protects.
Claims (20)
1. battery core cap; It is characterized in that: said battery core cap comprises battery cover plate (30), is separately positioned on the conducting terminal (10) and battery core cap lug (41 of the relative both sides of battery cover plate; 42), retaining piece (50) and insulation cushion (70); Said retaining piece links together said battery core cap, conducting terminal, battery core cap lug, and said insulation cushion is with said conducting terminal, said battery core cap and said battery core cap lug electrical isolation.
2. battery core cap as claimed in claim 1 is characterized in that: said conducting terminal comprises installation portion (12) that is installed on battery and covers and the junction (11) that extends and can be connected with external equipment from said installation portion.
3. battery core cap as claimed in claim 2 is characterized in that: said junction has helicitic texture.
4. battery core cap as claimed in claim 1 is characterized in that: said retaining piece is a rivet, and said conducting terminal, battery cover plate, battery core cap lug and insulation cushion pass through rivet in one.
5. battery core cap as claimed in claim 1 is characterized in that: said insulation cushion comprise be positioned at battery cover plate one side, in order to first insulation division (71) of said conducting terminal of electric insulation and battery cover plate, be positioned at battery cover plate opposite side, be used for second insulation division (72) of said battery cover plate of electric insulation and battery core cap lug.
6. battery core cap as claimed in claim 5 is characterized in that: said insulation is paid somebody's debt and expected repayment later and is comprised the connecting portion that connects first insulation division and second insulation division and said retaining piece of electric insulation and battery cover plate.
7. battery core cap as claimed in claim 6 is characterized in that: said battery cover plate offers and covers the hole and supply said retaining piece to pass, and the connecting portion of said insulation cushion is coated on the inwall of said lid hole.
8. battery core cap as claimed in claim 1 is characterized in that: the cross section of said insulation cushion is I shape.
9. battery core cap as claimed in claim 1 is characterized in that: said conducting terminal is the step screw, is to make with the cold stamping mode to form.
10. battery core cap as claimed in claim 1 is characterized in that: said battery core cap lug comprises positive pole ear and negative lug.
11. battery core cap as claimed in claim 10 is characterized in that: the material of said positive pole ear is an aluminium, and the material of said negative lug is copper nickel plating.
12. battery core cap as claimed in claim 10 is characterized in that: said battery core cap lug is a laminated structure.
13. battery core cap as claimed in claim 1 is characterized in that: said battery core cap further comprises an insulating trip (60), and said insulating trip is a laminated structure.
14. battery core cap as claimed in claim 13 is characterized in that: offer opening on the said insulating trip and supply said battery core cap lug to pass.
15. battery cap assemblies; Comprise battery structure (20); Said battery structure comprises lamination body and lamination body lug (21,22), it is characterized in that: said battery cap assemblies also comprises like any described battery core cap among the claim 1-15.
16. battery cap assemblies as claimed in claim 15; It is characterized in that: said lamination body is by some stacked the forming of pole piece; Each pole piece has a lug; Said lamination body lug is that to be welded through the ultrasonic bonding mode by some lugs be that one forms, and comprises anode pole piece lug and cathode pole piece lug.
17. battery cap assemblies as claimed in claim 16 is characterized in that: said lamination body lug and said battery core cap lug electrically connect, and form M type extreme ear structure.
18. the manufacturing approach of a battery cap assemblies is characterized in that: may further comprise the steps:
The battery cover plate is provided, said battery cover plate is inserted injection molding machine;
Injection mo(u)lding insulation cushion on said battery cover plate;
Provide the step screw to do conducting terminal, said conducting terminal is placed battery cover plate top;
Battery core cap lug is provided, said battery core cap lug is placed the battery under;
Rivet is provided, and said rivet is fixed said conducting terminal, said insulation cushion, said battery cover plate and said battery core cap lug with the riveted joint mode;
The battery structure is provided, the lug of said battery structure and battery core cap lug are welded in one with the mode of supersonic welding.
19. the manufacturing approach of battery cap assemblies as claimed in claim 18 is characterized in that: also comprise with the cold-stamped mode and make said step screw.
20. the manufacturing approach of battery cap assemblies as claimed in claim 18 is characterized in that: before the lug of battery structure and battery core cap lug welded, also comprise the step that lug and battery core cap lug with the battery structure bend respectively.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103951819A CN102420295A (en) | 2011-12-02 | 2011-12-02 | Battery core cover, battery core cover assembly and manufacturing method thereof |
| JP2012012728A JP2013118161A (en) | 2011-12-02 | 2012-01-25 | Battery lid assembly member, battery assembly including battery lid assembly member, and manufacturing method of battery assembly |
| EP12152672.7A EP2600433A1 (en) | 2011-12-02 | 2012-01-26 | Lithium ion battery |
| US13/360,413 US20130143097A1 (en) | 2011-12-02 | 2012-01-27 | Lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103951819A CN102420295A (en) | 2011-12-02 | 2011-12-02 | Battery core cover, battery core cover assembly and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102420295A true CN102420295A (en) | 2012-04-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103951819A Pending CN102420295A (en) | 2011-12-02 | 2011-12-02 | Battery core cover, battery core cover assembly and manufacturing method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN102420295A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106784909A (en) * | 2016-12-29 | 2017-05-31 | 东莞市金源电池科技有限公司 | Double battery core batteries and its preparation technology of a kind of high safety |
| CN110366786A (en) * | 2017-01-30 | 2019-10-22 | 罗伯特·博世有限公司 | Energy storage device |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003092103A (en) * | 2001-07-11 | 2003-03-28 | Japan Storage Battery Co Ltd | Battery |
| JP2003157812A (en) * | 2001-11-20 | 2003-05-30 | Japan Storage Battery Co Ltd | Manufacturing method of battery |
| CN1705155A (en) * | 2004-05-31 | 2005-12-07 | 三星Sdi株式会社 | Rechargeable battery |
| CN101232082A (en) * | 2007-01-25 | 2008-07-30 | 深圳华粤宝电池有限公司 | Battery cover plate with new type structure and secondary battery thereof |
| CN101567427A (en) * | 2009-06-05 | 2009-10-28 | 深圳市科达利实业有限公司 | Battery cathode sealing device |
| CN201408796Y (en) * | 2009-05-18 | 2010-02-17 | 湖北骆驼蓄电池股份有限公司 | Acid leakage-proof terminal of accumulator |
| CN101887956A (en) * | 2010-06-24 | 2010-11-17 | 朝阳立塬新能源有限公司 | Splitting riveting type energy storage device with low internal resistance |
| CN201853759U (en) * | 2010-06-24 | 2011-06-01 | 朝阳立塬新能源有限公司 | Split rivet-type energy storage device with low internal resistance |
| JP2011216243A (en) * | 2010-03-31 | 2011-10-27 | Lithium Energy Japan:Kk | Battery |
| CN102255058A (en) * | 2010-05-17 | 2011-11-23 | 株式会社杰士汤浅国际 | Battery and method of manufacturing the same |
| CN202058819U (en) * | 2011-04-19 | 2011-11-30 | 杨小东 | Intelligent lithium ion battery pack |
-
2011
- 2011-12-02 CN CN2011103951819A patent/CN102420295A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003092103A (en) * | 2001-07-11 | 2003-03-28 | Japan Storage Battery Co Ltd | Battery |
| JP2003157812A (en) * | 2001-11-20 | 2003-05-30 | Japan Storage Battery Co Ltd | Manufacturing method of battery |
| CN1705155A (en) * | 2004-05-31 | 2005-12-07 | 三星Sdi株式会社 | Rechargeable battery |
| CN101232082A (en) * | 2007-01-25 | 2008-07-30 | 深圳华粤宝电池有限公司 | Battery cover plate with new type structure and secondary battery thereof |
| CN201408796Y (en) * | 2009-05-18 | 2010-02-17 | 湖北骆驼蓄电池股份有限公司 | Acid leakage-proof terminal of accumulator |
| CN101567427A (en) * | 2009-06-05 | 2009-10-28 | 深圳市科达利实业有限公司 | Battery cathode sealing device |
| JP2011216243A (en) * | 2010-03-31 | 2011-10-27 | Lithium Energy Japan:Kk | Battery |
| CN102255058A (en) * | 2010-05-17 | 2011-11-23 | 株式会社杰士汤浅国际 | Battery and method of manufacturing the same |
| CN101887956A (en) * | 2010-06-24 | 2010-11-17 | 朝阳立塬新能源有限公司 | Splitting riveting type energy storage device with low internal resistance |
| CN201853759U (en) * | 2010-06-24 | 2011-06-01 | 朝阳立塬新能源有限公司 | Split rivet-type energy storage device with low internal resistance |
| CN202058819U (en) * | 2011-04-19 | 2011-11-30 | 杨小东 | Intelligent lithium ion battery pack |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106784909A (en) * | 2016-12-29 | 2017-05-31 | 东莞市金源电池科技有限公司 | Double battery core batteries and its preparation technology of a kind of high safety |
| CN110366786A (en) * | 2017-01-30 | 2019-10-22 | 罗伯特·博世有限公司 | Energy storage device |
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Application publication date: 20120418 |