CN101662004B - Battery cover board assembly, battery and battery pack, and manufacture method thereof - Google Patents
Battery cover board assembly, battery and battery pack, and manufacture method thereof Download PDFInfo
- Publication number
- CN101662004B CN101662004B CN2008101818182A CN200810181818A CN101662004B CN 101662004 B CN101662004 B CN 101662004B CN 2008101818182 A CN2008101818182 A CN 2008101818182A CN 200810181818 A CN200810181818 A CN 200810181818A CN 101662004 B CN101662004 B CN 101662004B
- Authority
- CN
- China
- Prior art keywords
- battery
- cover plate
- electrode terminal
- seal
- tubular rivet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Connection Of Batteries Or Terminals (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a battery cover board assembly, a battery and a battery pack, and a manufacture method thereof. The battery cover board assembly comprises a cover board, a hollow rivet, a sealing member and an electrode terminal, wherein the cover board is provided with a through hole, the through hole is communicated with the hollow part of the hollow rivet, and the electrode terminal is in a sheet shape; the sealing member is arranged in the hollow rivet, the electrode terminal passes through the sealing member, and the hollow rivet clamps the sealing member so as to seal the electrode terminal; the sealing member is higher than the upper part of the hollow rivet and wraps up the upper part of the hollow rivet to form a flanged structure. The battery is a battery using the battery cover board assembly, and the battery pack is a battery pack formed by connecting a plurality of batteries. Due to adopting the scheme that the sealing member is higher than the upper part of the hollow rivet and wraps up the upper part of the hollow rivet so as to seal the electrode terminal, when the battery is shocked by an external force, causing the electrode terminal to deform, the exposed sealing material can prevent the short circuit between the electrode terminal and the rivet, thereby enhancing the safety performance of the battery.
Description
[technical field]
The present invention relates to field of batteries, relate in particular to the battery cover board assembly field, electrode terminal is the field that the battery serial or parallel connection of sheet forms battery pack.
[background technology]
In oil modern society in short supply day by day, electric motor car becomes the alternative car that people consider.In the vehicles such as electric motor car, hybrid power, generally all be to adopt the power battery pack that is formed by connecting on a plurality of batteries, satisfy the demand of high-power output with this.Traditional battery pack syndeton is as shown in Figure 1; In this power battery pack 10; Owing to adopt positive terminal 22, the negative terminal 24 of screw and nut, carry out serial operation with connector 40, so there are many defectives such as the contact internal resistance is big, battery weight is heavier in this connected mode as battery.If occur between nut and the screw simultaneously becoming flexible, it is bigger then to contact the internal resistance meeting, and might cause seal failure, reduces the battery reliability.
Internal resistance is big, the heavier shortcoming of weight in view of above-mentioned power battery pack exists; The applicant had once invented a kind of electrokinetic cell of sheet deriving structure; And applied for patent, the patent No. is ZL200720147273.4, and is as shown in Figure 2; Promptly adopt sheet lead-out tablet 22 and 23 to replace traditional pole structure, the both positive and negative polarity of electric core is guided to outside batteries.In this mode, the connection between connection between electric core and the lead-out tablet and the battery 1 all is to adopt welding manner to accomplish, so with respect to the connected mode of screw and nut, can reduce the contact internal resistance of battery and battery pack to a great extent.In this connected mode, the sealed structure chart between lead-out tablet and the cover plate is crucial, and it directly influences the performance of battery.
Shown in Fig. 3 (a); Said hermetically-sealed construction comprises a tubular rivet 8 and seal 9; Seal 9 is in tubular rivet 8, and electrode terminal 2 (is above-mentioned lead-out tablet, describes for convenient; All claim electrode terminal below) from seal 9, pass, said seal of tubular rivet 8 clampings and deformation squeeze sealing member are with the enclosed electrode terminal; Tubular rivet 8 and cover plate 7 welding.Shown in 3 (b), after being extruded, tubular rivet 8 become illustrated shape, to reach the purpose of sealing.
Yet; The inventor finds that because the inner seal 9 of hermetically-sealed construction is filled in the tubular rivet 8, electrode terminal 2 stretches out the certain probability of having of seal and is connected with tubular rivet 8; And tubular rivet 8 is conductors; And link to each other with shell, cause having certain probability to make the entire cell short circuit like this, bring risk for the manufacturing and the use of battery.
[summary of the invention]
During for solution manufacturing and use battery, electrode terminal and tubular rivet are prone to problem of short-circuit, the invention provides a kind of safe and reliable battery cover board assembly.
Battery cover board assembly of the present invention comprises cover plate, tubular rivet, seal, electrode terminal; Cover plate is provided with through hole, and through hole communicates with the hollow space of tubular rivet, and electrode terminal is a sheet; Seal is in tubular rivet, and electrode terminal passes from seal, and the said seal of tubular rivet clamping is with the enclosed electrode terminal; Seal exceeds tubular rivet top and encases tubular rivet top formation turnup structure.
The present invention provides a kind of safe and reliable battery simultaneously.
Battery of the present invention comprises cover plate assembly, housing, pole piece and electrolyte; Pole piece and electrolyte are encapsulated in the seal cavity of said housing and cover plate assembly formation; Cover plate assembly upper electrode terminal one end is electrically connected with pole piece, and it is outer as battery electrode that the other end stretches out seal cavity.
The present invention provides a kind of battery pack simultaneously, is formed by connecting through serial or parallel connection or series-parallel connection on above-mentioned battery, and the pellet electrode terminal of each battery is welded to connect through applying.
The present invention provides a kind of manufacturing approach of battery cover board simultaneously, comprises the steps:
1) makes cover plate, have a through hole on the cover plate;
2) tubular rivet is welded as a whole with cover plate on through hole, hollow space communicates with through hole in the tubular rivet;
3) electrode terminal is passed through hole and tubular rivet; Then through injecting sealing material injection moulding in the through hole on tubular rivet and cover plate; In tubular rivet and cover plate, form a seal; This moment, electrode terminal was injection-moulded in the seal, made seal exceed tubular rivet top and encase tubular rivet top to form turnup structure.
The present invention provides a kind of manufacturing approach of battery simultaneously, comprises the steps:
A) make battery cover board assembly, make pole piece and housing;
B) pole piece is placed in the housing, and the end of the electrode terminal on the cover plate assembly under cover plate is connected with pole piece;
C) with cover plate assembly and housing welded seal, form a seal cavity, pole piece injects electrolyte then in seal cavity in said seal cavity.
The present invention provides a kind of manufacturing approach of battery pack simultaneously, behind the method manufacturing battery of making battery, each battery is connected to form battery pack, and the pellet electrode terminal of each battery is welded to connect through applying.
The present invention forms turnup structure owing to having adopted seal to exceed tubular rivet top and having encased tubular rivet top; Scheme with the enclosed electrode terminal; When so the impact and the render electrical gate terminal that receive external force when battery deform; The encapsulant that exposes can well prevent the short circuit between electrode terminal and the rivet, has promoted the security performance of battery.
[description of drawings]
Pole type battery pack structure sketch map in Fig. 1 prior art;
The battery pack structure sketch map that Fig. 2 connects through the pellet electrode terminal;
Sealed structural representation in Fig. 3 (a) prior art;
Sealed structural representation in Fig. 3 (b) prior art;
Fig. 4 specific embodiment of the invention cover plate modular construction sketch map;
Process structure sketch map on the electrode terminal in Fig. 5 specific embodiment of the invention;
Preferred cover plate assembly structural representation in Fig. 6 specific embodiment of the invention;
Fig. 7 specific embodiment of the invention cover plate guard member integrative-structure sketch map;
Fig. 8-Figure 11 specific embodiment of the invention cover plate guard member is split type mutual buckle type structural representation;
[embodiment]
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearer,, the present invention is done further explain below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Embodiment 1
As shown in Figure 4, cover plate assembly comprises cover plate 7, tubular rivet 8, and moulding and electrode terminal 2, cover plate 7 is provided with through hole, and a tubular rivet 8 is welded in the through hole, and through hole communicates on the hollow space of tubular rivet 8 and the cover plate 7; Electrode terminal 2 is passed through hole on tubular rivet 8 and the cover plate 7; Then through injecting sealing material injection moulding in tubular rivet 8 and cover plate 7 through holes; On tubular rivet 8 and cover plate 7, form a seal 9 in the through hole; This moment, electrode terminal 2 was injection-moulded in the seal 9, made seal 9 exceed tubular rivet top and encase tubular rivet top to form turnup structure 90 with enclosed electrode terminal 2; Preferably, seal 9 also can form insulated part in cover plate 7 lower ends, be electrically connected with cover plate 7 to prevent lug as spacer ring 91.
The cover plate 7 of present embodiment is provided with a through hole, and a tubular rivet 8 communicates with this through hole, also is provided with liquid injection hole on the cover plate 7 in addition, is used in housing, feeding electrolyte, if be two cover plates 7, then only need on the cover plate 7 wherein liquid injection hole to be set and gets final product.
Electrode terminal 2 (or claiming the electrode lead-out tablet) is metals such as copper, aluminium, nickel.Preferably, be the adhesion strength between intensifier electrode terminal 2 and the seal 9, have the process structure 11 that increases with the encapsulant adhesion strength on the electrode terminal 2.Increase electrode terminal 2 rough surface faces or uneven structure such as projection, through hole etc.Or the alternative means that is equal to, these for the mechanical engineer, should be under the enlightenment of present embodiment, very easily to expect, as shown in Figure 5, this process structure 11 is distributed on the sheet plane of electrode terminal 2 equally spacedly, and the cross section of penetrating electrode terminal 2.Process structure 11 can be arbitrary shape and size.Wherein, shape is preferably circle, square, rhombus.
As shown in Figure 4, the seal 9 in the hermetically-sealed construction is the encapsulant injection mo(u)lding, and encapsulant is can be plastics; As can adopt but be not limited to PFA (injection grade perfluoroalkyl alkoxy copolymer), PES (Poly-s 179), PPS (polyphenylene sulfide), MODIFIED PP (modification polypropylene) etc.; Can be rubber, such as selecting for use but be not limited to EPDM, can select resin for use; Such as selecting for use but be not limited to epoxy resin, phenol aldehyde modified epoxy resin etc.; Perhaps select adhesive glue for use, can select for use but be not limited to bi-component epoxide-resin glue, PUR etc., must have insulation characterisitic, electrolyte resistance and hydrofluoric acid, can with the material of copper al stainless steel metlbond.Encapsulant preferably adopts PPS (polyphenylene sulfide).
Be provided with the spacer ring 91 of insulation below the general cover plate 7, should be used to isolate pole piece and cover plate 7 by each circle.Spacer ring can be structure as a whole with cover plate assembly, becomes the part of cover plate assembly.
Preferably, be the adhesion strength between intensifier electrode terminal 2 and the seal 9, can on electrode terminal 2, increase process structure 11 with the encapsulant bonding strength.
The cover plate assembly manufacturing approach is described below:
Make cover plate 7 and tubular rivet 8; Have a through hole on the cover plate 7, the cover plate 7 that will have through hole is welded as a whole with tubular rivet 8, and hollow space communicates with through hole in the tubular rivet; Then electrode terminal 2 is passed tubular rivet 8; Then through injecting sealing material injection moulding in tubular rivet 8; In tubular rivet 8, form a seal 9; This moment, electrode terminal 2 was injection-moulded in the seal 9, made seal 9 exceed tubular rivet top and encase tubular rivet top to form turnup structure 90 with enclosed electrode terminal 2;
During injection moulding; The part that original spacer ring 91 parts can be used as seal 9 is injection-moulded on the cover plate 7; Because the sealing structure is earlier rivet and cover plate 7 to be added the encapsulant injection moulding after integrally welded again, in the simplification manufacture craft, has also reduced the hidden danger of seal failure.So with first injection moulding again welding procedure compare, both simplified technology, the heat that has produced when having avoided 7 welding of rivet and cover plate again damages the phenomenon of encapsulant.
Preferably, can on the contact-making surface of encapsulant and electrode terminal 2, tubular rivet 8 and cover plate 7, add the further enhanced leaktightness effect of adhesive.
As required, the reinforcement 10 of gaining in strength can be set on tubular rivet 8.
During manufacturing, can earlier before injecting sealing material injection moulding in tubular rivet 8, carry out roughening treatment to pellet electrode terminal 2, cover plate 7 and rivet earlier.
The invention discloses a kind of battery (or claiming cell), comprise housing (not shown), cover plate assembly, electrolyte and pole piece, describe in detail among the cover plate assembly embodiment 1, comprise cover plate 7, tubular rivet 8, seal 9 and electrode terminal 2; Pole piece and electrolyte are encapsulated in the seal cavity of said housing and cover plate assembly formation; Pole piece is electrically connected with electrode terminal 2, and electrode terminal 2 comprises positive terminal and negative terminal; Cover plate 7 is provided with through hole; Electrode terminal 2 passes said through hole and draws as anodal, negative pole; Tubular rivet 8 can be described as hermetically-sealed construction with seal 9, and electrode terminal 2 is through the sealing sealing structure, and seal 9 is in tubular rivet 8; Electrode terminal 2 passes from seal 9, and the said seal 9 of tubular rivet 8 clampings is with enclosed electrode terminal 2; Seal 9 exceeds tubular rivet 8 tops and encases tubular rivet 8 tops formation turnup structure 90.
The cover plate of describing in the present embodiment 7, battery terminal 2 and hermetically-sealed construction constitute the cover plate assembly among the embodiment 1.
Pole piece comprises positive plate, barrier film, negative plate, and is different according to the mode that forms, and can be divided into takeup type pole piece and stacked pole piece; So-called takeup type pole piece is a positive plate, barrier film, the pole piece that negative plate forms through the mode of reeling; Each draws an anode ear, negative electrode lug respectively on each positive plate, negative plate; The present invention is the electrode terminal 2 that preceding text are said, i.e. positive terminal and negative terminal with drawing battery 1 outside between anode ear, the negative electrode lug as electrode.And stacked battery is a plurality of positive plates, barrier film, negative plate, barrier film ... folding successively forming; Draw an anode ear on each positive plate; Draw a negative electrode lug on each negative plate, therefore must a plurality of anode ears be linked together through an anodal lead-out tablet and draw, a plurality of negative electrode lugs are linked together through a negative pole lead-out tablet draw as GND as anode; Then should be positive terminal by the positive pole lead-out tablet, this negative pole lead-out tablet is negative terminal.Connected mode is welding, and welding can be supersonic welding, cold welding, Laser Welding, soldering, flash butt welding, friction welding (FW), electric resistance welding.
Because of positive plate, barrier film, negative plate are conventionally known to one of skill in the art, the method for production of pole piece also is conventionally known to one of skill in the art, therefore no longer endures and states.
Housing is generally box hat or aluminum hull, selects material as required, and cover plate 7 also is a metal material.This routine cover plate 7 is selected stainless steel; Positive terminal, negative terminal can be drawn from the same side of battery 1 as required, such as all drawing from the top of battery 1, are from the same side like the battery among Fig. 21 and draw; Need a cover plate 7 this moment, but pass two electrode terminals 2 on the cover plate 7; Also can draw from the both sides of battery respectively, then need two cover plates 7 this moment, be separately positioned on the housing both sides of hollow sleeve wound packages, positive terminal and negative terminal are drawn from both sides respectively, then two cover plates 7 and housing welded seal.
As shown in Figure 4, the seal 9 in the hermetically-sealed construction is the encapsulant injection mo(u)lding, and encapsulant is can be plastics; As can adopt but be not limited to PFA (injection grade perfluoroalkyl alkoxy copolymer), PES (Poly-s 179), PPS (polyphenylene sulfide), MODIFIED PP (modification polypropylene) etc.; Can be rubber, such as selecting for use but be not limited to EPDM, can select resin for use; Such as selecting for use but be not limited to epoxy resin, phenol aldehyde modified epoxy resin etc.; Perhaps select adhesive glue for use, can select for use but be not limited to bi-component epoxide-resin glue, PUR etc., must have insulation characterisitic, electrolyte resistance and hydrofluoric acid, can with the material of copper al stainless steel metlbond.Encapsulant preferably adopts PPS (polyphenylene sulfide).
During injection moulding; Tubular rivet 8 is placed mould, then the hollow space of electrode terminal 2 from tubular rivet 8 passed through injection moulding then; Form hermetically-sealed construction as shown in Figure 4, and mould must be able to make have after the injection moulding part encapsulant to form turnup structure 90 on rivet top.The structure of bonding force between the different materials and adhesion and encapsulant outsourcing rivet can guarantee air-tightness, water penetration requirement under the certain pressure; Compare with original mechanical seal, have higher sealing reliability.Owing to adopted the turnup structure 90 of encapsulant outsourcing rivet; When so the impact and the render electrical gate terminal 2 that receive external force when battery deform; The encapsulant that exposes can well prevent the short circuit between electrode and the tubular rivet 8, has promoted the security performance of battery.
After injection moulding is intact tubular rivet 8 is welded on the cover plate 7.
As replacement scheme; Also can earlier rivet be welded on the cover plate 7; Structure after then cover plate 7 and rivet being welded is put into mould and is carried out injection moulding, forms turnup structure 90 after the injection moulding equally on rivet top, and can spacer ring 91 one below the cover plate 7 be injection-moulded on the cover plate 7.Also reduced the hidden danger of seal failure when simplifying manufacture craft like this.The heat that has produced when having avoided rivet and cover plate 7 welding again damages the phenomenon of encapsulant.Therefore preferred this kind mode is carried out.
For guaranteeing the security performance of battery, can temperature protection device, safety valve etc. be set in battery 1, for conventionally known to one of skill in the art, therefore seldom describe.
Cell manufacturing method mainly comprises the steps:
Make battery cover board assembly, make pole piece and housing;
Pole piece is placed in the housing, and the end of the electrode terminal on the cover plate assembly under cover plate is connected with pole piece;
With cover plate assembly and housing welded seal, form a seal cavity, pole piece injects electrolyte then in seal cavity in said seal cavity.
Further specify below.
Make pole piece: promptly make positive electrode; Make negative material, apply positive electrode then on the aluminium foil, on Copper Foil, apply negative material as negative plate as positive plate; Make the barrier film of appropriate length and width; Reel then or the stacked pole piece that forms, this step is conventionally known to one of skill in the art, seldom is described herein.
Make housing:, form commercially available acquisition like punching press with existing known technology.
Then pole piece is placed in the housing, and with an end and the pole piece of electrode terminal 2 under cover plate 7 through being welded to connect; The mode of welding can be selected welding manner commonly used for use, such as the cold welding of mentioning in the preamble, supersonic welding, Laser Welding, soldering, flash butt welding, friction welding (FW), electric resistance welding etc., preferably adopts cold welding.
Welded case and cover plate assembly then are then toward interior injection electrolyte.
Just become spendable battery through after changing into like this.Also comprise steps such as subsequent packages,, no longer endure and state because of it is conventionally known to one of skill in the art.
Simultaneously, preferably, can before injecting sealing material injection moulding in tubular rivet 8, carry out roughening treatment to pellet electrode terminal 2, cover plate 7 and rivet earlier.So-called roughening treatment is the processing of the contacted surface of workpiece being carried out corresponding technologies such as texturing, its objective is in order to let encapsulant better be connected with electrode terminal 2, rivet and cover plate 7, implements better to seal.
Preferably, can, injection moulding on the contact-making surface of seal 9 and electrode terminal 2, cover plate 7 and rivet, inject adhesive after accomplishing.So further raising bonding force and adhesion can guarantee air-tightness, water penetration requirement under the certain pressure, have higher sealing reliability.
When making tubular rivet 8, preferably on tubular rivet 8, make reinforcement 10 to improve reinforcement 10 intensity.
Preferably, also be included in be provided with on the electrode terminal 2 increase with seal 9 fusible process structures 11 step.This process structure 11 is distributed on the sheet plane of electrode terminal 2 equally spacedly, and the cross section of penetrating electrode terminal 2.Process structure 11 can be arbitrary shape and size.Wherein, shape is preferably circle, square, rhombus.
Present embodiment is mainly introduced power battery pack, and the battery that makes among the embodiment 21 is connected according to the electric current of required output and the mode of Voltage Series or parallel connection or series-parallel connection.
Can be the annexation of serial or parallel connection between the battery 1, can be through realizing the serial or parallel connection between a plurality of batteries 1 through the electrode terminal 2 that connects battery 1 in a different manner.As shown in Figure 2, be series connection between the battery 1, electrode terminal 2 of a battery 1 is connected with the opposite polarity electrode terminal 2 of an adjacent battery 1, and the opposite polarity electrode terminal 2 of another electrode terminal 2 battery 1 adjacent with another is connected.The mode that battery 1 is connected includes but not limited to following mode: the negative terminal 23 that is positioned at the battery 1 of an end is connected with the positive terminal 22 of adjacent battery 1; The positive terminal 22 that perhaps is positioned at the battery 1 of an end is connected with the negative terminal 23 of adjacent battery 1; The rest may be inferred; Opposite polarity pair of electrodes terminal 2 welding of two adjacent batteries 1; Thereby two batteries 1 at the two ends of the battery pack that obtains respectively have an electrode terminal 2 not to be connected with other electrode terminal 2, and the polarity of these two electrode terminals 2 is opposite, as the both positive and negative polarity of battery pack.
Connected mode between the electrode terminal 2 is for fitting, as long as the pellet electrode terminal 2 that will connect fits together and makes certain bonding strength is arranged between the electrode terminal 2, under the preferable case, with 2 welding of pellet electrode terminal.Welding can be existing various welding methods, and for example cold welding, supersonic welding, Laser Welding, soldering, flash butt welding, friction welding (FW), electric resistance welding etc. preferably adopt cold welding.Use cold welding only need provide enough static pressures just can realize reliable soldering, and it is little, shockproof and do not have a relative displacement to be welded the object caloric value in the welding process.
As shown in Figure 6, preferably, the cover plate guard member 3 of an insulation is set on the cover plate 7 again, cover plate guard member 3 is isolated electrode terminal 2 and cover plate 7 insulation.
Cover plate guard member 3 optional usefulness have insulation characterisitic, electrolyte resistance and fire-retardant material and process; For example plastics, rubber, resin; Wherein plastics can adopt but be not limited to PFA, PES, MODIFIED PP; Rubber can be selected for use but be not limited to ethylene propylene diene rubber, and resin can be selected for use but be not limited to epoxy resin, phenol aldehyde modified epoxy resin etc., and its cover plate guard member 3 materials are preferably rubber.
Shown in Fig. 7, Fig. 8, cover plate guard member 3 is provided with the hole 30 that can let electrode terminal 2 draw.
Also the electrode mark can be set on the cover board, such as the negative pole mark 31 among Fig. 7, Fig. 8.
Cover plate guard member 3 is structure as a whole or divides body structure, and the shape of cover plate guard member 3 and cover plate assembly be complementary, and divides body structure that the hole was opened in 30 minutes.Fig. 7 is the integral structure sketch map.
Dividing body structure is the mutual buckle type structure.Cover plate has been divided into two parts, is provided with protuberance 33 such as the part of cover plate, and then another part is provided with corresponding concave part 34, and this protuberance, recess can be any fit structures such as corresponding triangle, trapezoidal, square, rectangle or " U " shape.Such as protuberance among Fig. 8 33 and recess 34 is the trapezoidal of correspondence; It is as shown in Figure 9 that two parts are detained later shape mutually, is corresponding rectangle such as protuberance among Figure 10 33 and recess 34; Such as protuberance among Figure 11 33 and recess 34 is corresponding U-shaped; The mutual buckle type structure helps the engaging of branch body structure, makes connection more firm.In the battery assembling process, will make that assembling is more simple and convenient.
It is bending structure that existing electrode terminal 2 is positioned at battery 1 outer part; Be fitted and connected with other battery 1 with convenient; And certain rigidity is arranged; Employing is with the branch body structure that the hole on the cover plate guard member 3 is divided into two, and the bending part of walking around electrode terminal like this directly is fastened on the lug lead-out tablet in the hole on the cover plate guard member from both sides.Significantly reduce the difficulty of drawing the hole of lug lead-out tablet on cover plate guard member 3.
Like Fig. 7, shown in Figure 8, the steam vent 32 of pressure release was avoided the impact failure of external force in order to protect safety valve when cover plate guard member 3 was provided with and is beneficial to safety valve and opens, and this steam vent is preferably the intersection fence structure.
Preferably, be positioned at cover plate 7 and have groove 4 on the electrode terminals 2 as battery electrode outward.When receiving mechanical external force rearward recess 4 safety effect that ruptured.
The method preparation that groove 4 can adopt mechanical field to know is arbitrarily perhaps processed with methods such as punching presses; The degree of depth of groove 4 is the 10%-95% of electrode terminal thickness; The wide of said groove 4 is the 50%-500% of electrode terminal 2 width; Groove on the electrode terminal can be one or many.
The thickness of electrode terminal 2 can be decided with the preparation needs according to the kind of battery, and according to specific embodiments of the present invention, the thickness of said electrode terminal 2 is the 0.2-20 millimeter, preferred 2.5 millimeters.
Preferably, be filled with soft in the groove 4 and the filler of conductive capability and certain bond strength is arranged, said filler can be tin, conductive plastic, conductive rubber etc.
Claims (29)
1. a battery cover board assembly comprises cover plate, tubular rivet, seal, electrode terminal;
Said cover plate is provided with through hole, the tubular rivet setting on the cover board, said through hole communicates with the hollow space of tubular rivet, electrode terminal is a sheet;
Seal is in tubular rivet, and electrode terminal passes from seal, and the said seal of tubular rivet clamping is with the enclosed electrode terminal; Seal exceeds tubular rivet top and encases tubular rivet top formation turnup structure;
Said seal is processed by the material with insulation characterisitic, electrolyte resistance and hydrofluoric acid.
2. battery cover board assembly as claimed in claim 1 is characterized in that: said tubular rivet and cover plate are structure as a whole, and through hole communicates on tubular rivet hollow space and the cover plate.
3. according to claim 1 or claim 2 battery cover board assembly is characterized in that: be injected with adhesive on the contact-making surface of said seal and electrode terminal.
4. battery cover board assembly as claimed in claim 1 is characterized in that: hermetically-sealed construction is tubular rivet and seal injection mo(u)lding.
5. battery cover board assembly as claimed in claim 1 is characterized in that: said tubular rivet is provided with the reinforcement of gaining in strength.
6. like claim 1 or 2 or 4 or 5 described battery cover board assemblies, it is characterized in that: said electrode terminal is provided with to be increased and the fusible process structure of seal.
7. battery cover board assembly as claimed in claim 1 is characterized in that: the injection mo(u)lding in tubular rivet of said seal.
8. battery cover board assembly as claimed in claim 1 is characterized in that: seal forms spacer ring through the cover plate through hole at the cover plate lower surface.
9. battery cover board assembly as claimed in claim 1 is characterized in that: the manufacturing materials of said seal for can with the material of copper al stainless steel metlbond.
10. battery cover board assembly as claimed in claim 1 is characterized in that: have the cover plate guard member of an insulation on the said cover plate, said cover plate guard member is isolated electrode terminal and cover plate insulation.
11. battery cover board assembly as claimed in claim 10 is characterized in that: said cover plate guard member is split type mutual buckle structure.
12., it is characterized in that: be positioned at cover plate assembly and have through the groove on said electrode terminal surface on the electrode terminal as battery electrode outward like claim 1 or 10 or 11 described battery cover board assemblies.
13. battery cover board assembly as claimed in claim 12 is characterized in that: be filled with soft in the groove and the filler of conductive capability and certain bond strength is arranged.
14. a battery comprises any described cover plate assembly, housing, pole piece and an electrolyte among the claim 1-13;
Said pole piece and electrolyte are encapsulated in the seal cavity of said housing and cover plate assembly formation; Cover plate assembly upper electrode terminal one end is electrically connected with pole piece, and it is outer as battery electrode that the other end stretches out seal cavity.
15. battery as claimed in claim 14 is characterized in that: said housing is the cuboid of an end opening, and said cover plate assembly and housing stretch out two electrode terminals in the opening part fitted seal on the cover plate assembly, respectively as positive pole, the negative pole of battery.
16. battery as claimed in claim 14 is characterized in that: said housing is the cuboid of both ends open, and both ends open stretches out two electrode terminals through the sealing of two cover plate assemblies on the cover plate assembly, respectively as positive pole, the negative pole of battery.
17. a battery pack is formed by connecting like any described battery among the claim 14-16 a plurality of, the pellet electrode terminal of each battery is welded to connect through applying.
18. a battery cover board assembly manufacturing approach comprises the steps:
1) makes cover plate, have a through hole on the cover plate;
2) tubular rivet is welded as a whole with cover plate on through hole, hollow space communicates with through hole in the tubular rivet;
3) choose have insulation characterisitic, the material of electrolyte resistance and hydrofluoric acid is as the injected plastics material of seal;
4) electrode terminal is passed through hole and tubular rivet; Then through injecting sealing material injection moulding in the through hole on tubular rivet and cover plate; In tubular rivet and cover plate, form a seal; This moment, electrode terminal was injection-moulded in the seal, made seal exceed tubular rivet top and encase tubular rivet top to form turnup structure.
19. battery cover board assembly manufacturing approach as claimed in claim 18 is characterized in that: before injecting sealing material injection moulding in tubular rivet and through hole, earlier pellet electrode terminal, cover plate and tubular rivet are carried out roughening treatment.
20. like claim 18 or 19 described battery cover board assembly manufacturing approaches, it is characterized in that: injection moulding is injected adhesive after accomplishing on the contact-making surface of seal and electrode terminal.
21. battery cover board assembly manufacturing approach as claimed in claim 18 is characterized in that: also be included in the step of making reinforcement on the tubular rivet.
22. battery cover board assembly manufacturing approach as claimed in claim 21 is characterized in that: also be included in the step that increases with the fusible process structure of seal is set on the electrode terminal.
23. battery cover board assembly manufacturing approach as claimed in claim 18 is characterized in that: during injection moulding, seal forms spacer ring through the cover plate through hole at the cover plate lower surface.
24. battery cover board assembly manufacturing approach as claimed in claim 18 is characterized in that: the cover plate guard member of an insulation on the cover board is set, and said cover plate guard member is isolated electrode terminal and cover plate insulation.
25. battery cover board assembly manufacturing approach as claimed in claim 24 is characterized in that: said cover plate guard member is arranged to split type mutual buckle structure.
26. like claim 18 or 24 or 25 described battery cover board assembly manufacturing approaches, it is characterized in that: it is outer as being provided with on the electrode terminal of battery electrode through the groove on said electrode terminal surface to be positioned at cover plate assembly.
27. battery cover board assembly manufacturing approach as claimed in claim 26 is characterized in that: in groove, fill soft and the filler of conductive capability and certain bond strength is arranged.
28. a cell manufacturing method comprises the steps:
A) make battery cover board assembly like any described method among the claim 18-27, make pole piece and housing;
B) pole piece is placed in the housing, and the end of the electrode terminal on the cover plate assembly under cover plate is connected with pole piece;
C) with cover plate assembly and housing welded seal, form a seal cavity, pole piece injects electrolyte then in seal cavity in said seal cavity.
29. a battery pack manufacturing approach is made battery by the described cell manufacturing method of claim 28, then each battery is connected to form battery pack, the pellet electrode terminal of each battery is welded to connect through applying.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101818182A CN101662004B (en) | 2008-08-26 | 2008-11-14 | Battery cover board assembly, battery and battery pack, and manufacture method thereof |
| US12/547,856 US8420254B2 (en) | 2007-12-25 | 2009-08-26 | End cover assembly for an electrochemical cell |
| PCT/CN2009/073581 WO2010022668A1 (en) | 2008-08-26 | 2009-08-27 | Battery cover board assembly, battery having the same, battery pack and method of forming the same |
| JP2011524169A JP5646482B2 (en) | 2008-08-26 | 2009-08-27 | Battery cover assembly, battery including the cover assembly, battery pack, and manufacturing method thereof |
| KR1020117007109A KR101297941B1 (en) | 2008-08-26 | 2009-08-27 | Battery cover board assembly, battery having the same, battery pack and method of forming the same |
| EP09809253.9A EP2321865B1 (en) | 2008-08-26 | 2009-08-27 | Battery cover board assembly, battery having the same, battery pack and method of forming the same |
Applications Claiming Priority (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810142082 | 2008-08-26 | ||
| CN200810142083.2 | 2008-08-26 | ||
| CN200810142083 | 2008-08-26 | ||
| CN200810142082.8 | 2008-08-26 | ||
| CN200820146851.7 | 2008-08-26 | ||
| CN200820146851 | 2008-08-26 | ||
| CN200820146848 | 2008-08-26 | ||
| CN200820146848.5 | 2008-08-26 | ||
| CN2008101818182A CN101662004B (en) | 2008-08-26 | 2008-11-14 | Battery cover board assembly, battery and battery pack, and manufacture method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101662004A CN101662004A (en) | 2010-03-03 |
| CN101662004B true CN101662004B (en) | 2012-05-30 |
Family
ID=41276968
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202074796U Expired - Lifetime CN201345384Y (en) | 2008-08-26 | 2008-11-01 | Battery pack |
| CNU2008202074832U Expired - Lifetime CN201349038Y (en) | 2008-08-26 | 2008-11-01 | Battery and battery pack |
| CN2008101818182A Active CN101662004B (en) | 2007-12-25 | 2008-11-14 | Battery cover board assembly, battery and battery pack, and manufacture method thereof |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202074796U Expired - Lifetime CN201345384Y (en) | 2008-08-26 | 2008-11-01 | Battery pack |
| CNU2008202074832U Expired - Lifetime CN201349038Y (en) | 2008-08-26 | 2008-11-01 | Battery and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN201345384Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022209569A1 (en) | 2022-09-13 | 2024-03-14 | Mahle International Gmbh | High-voltage connection, battery module and procedure |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101877413B (en) * | 2009-04-30 | 2013-10-30 | 比亚迪股份有限公司 | Monomer battery and power battery pack containing same |
| US20120189901A1 (en) * | 2011-01-21 | 2012-07-26 | Chia-Ming Chuang | Battery cell, battery module incorporated with same and method for producing the battery module |
| AT512028B1 (en) * | 2011-10-13 | 2015-06-15 | Avl List Gmbh | ELECTRIC ENERGY STORAGE |
| CN102569679A (en) * | 2011-12-30 | 2012-07-11 | 丁振荣 | Battery core, battery and method for sealing and fixing electrode and cap of battery |
| JP2017199652A (en) * | 2016-04-25 | 2017-11-02 | 株式会社Ｇｓユアサ | Energy storage element |
| JP6950201B2 (en) * | 2016-04-25 | 2021-10-13 | 株式会社Ｇｓユアサ | Power storage element |
| CN105958078B (en) * | 2016-06-27 | 2018-07-17 | 中银（宁波）电池有限公司 | Battery current collector |
| CN107204408B (en) * | 2017-06-05 | 2023-08-04 | 林州朗坤科技有限公司 | Full-lug square lithium battery and preparation method thereof |
| JP2019029225A (en) * | 2017-07-31 | 2019-02-21 | リチウム エナジー アンド パワー ゲゼルシャフト ミット ベシュレンクテル ハフッング ウント コンパニー コマンディトゲゼルシャフトＬｉｔｈｉｕｍ Ｅｎｅｒｇｙ ａｎｄ Ｐｏｗｅｒ ＧｍｂＨ ＆ Ｃｏ． ＫＧ | Power storage element |
| CN109841910B (en) * | 2019-02-28 | 2020-12-11 | 西安西电电气研究院有限责任公司 | Liquid metal battery |
| CN110247011A (en) * | 2019-07-13 | 2019-09-17 | 常州瑞德丰精密技术有限公司 | Battery cap with drainage function |
| CN110739416A (en) * | 2019-11-07 | 2020-01-31 | 多氟多新能源科技有限公司 | optimized novel lithium battery cover plate assembly |
| CN113903971A (en) * | 2021-09-26 | 2022-01-07 | 中安芯界(莱西)新能源科技有限公司 | Slat battery chip |
| CN114430086A (en) * | 2022-01-25 | 2022-05-03 | 东莞新能安科技有限公司 | Battery core subassembly and battery |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2754215Y (en) * | 2004-12-30 | 2006-01-25 | 比亚迪股份有限公司 | Cell |
| CN201374350Y (en) * | 2008-11-14 | 2009-12-30 | 比亚迪股份有限公司 | Battery, battery cover plate assembly and battery pack |
-
2008
- 2008-11-01 CN CNU2008202074796U patent/CN201345384Y/en not_active Expired - Lifetime
- 2008-11-01 CN CNU2008202074832U patent/CN201349038Y/en not_active Expired - Lifetime
- 2008-11-14 CN CN2008101818182A patent/CN101662004B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2754215Y (en) * | 2004-12-30 | 2006-01-25 | 比亚迪股份有限公司 | Cell |
| CN201374350Y (en) * | 2008-11-14 | 2009-12-30 | 比亚迪股份有限公司 | Battery, battery cover plate assembly and battery pack |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2005-190885A 2005.07.14 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022209569A1 (en) | 2022-09-13 | 2024-03-14 | Mahle International Gmbh | High-voltage connection, battery module and procedure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101662004A (en) | 2010-03-03 |
| CN201345384Y (en) | 2009-11-11 |
| CN201349038Y (en) | 2009-11-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101662004B (en) | Battery cover board assembly, battery and battery pack, and manufacture method thereof | |
| CN201374350Y (en) | Battery, battery cover plate assembly and battery pack | |
| US20120082888A1 (en) | Electrochemical device and process of manufacturing same | |
| KR20080005627A (en) | Secondary battery having safety-improved sealing portion | |
| KR101229228B1 (en) | Secondary Battery with Improved Moisture Barrier | |
| JP6860091B2 (en) | Power storage module and manufacturing method of power storage module | |
| JP7088410B2 (en) | Power storage module | |
| KR101306190B1 (en) | Secondary Battery of Improved Insulating Property | |
| JP6874852B2 (en) | Power storage module | |
| JP2018106967A (en) | Power storage device and manufacturing method thereof | |
| JP6858270B2 (en) | Power storage module | |
| CN204885310U (en) | Soft package lithium -ion battery with H type lamination | |
| JP7100538B2 (en) | Power storage module | |
| JP2019192589A (en) | Manufacturing method for power storage module | |
| JP2019121450A (en) | Power-storage module and manufacturing method thereof | |
| JP7103272B2 (en) | Power storage module and its manufacturing method | |
| JP7095630B2 (en) | Power storage module manufacturing equipment and power storage module manufacturing method | |
| JP7056167B2 (en) | Power storage module and manufacturing method of power storage module | |
| JP7056102B2 (en) | Manufacturing method of power storage module and power storage module | |
| JP2019192625A (en) | Manufacturing method for power storage module and power storage module | |
| JP7074614B2 (en) | Power storage module | |
| JP7087955B2 (en) | Manufacturing method of power storage module and power storage module | |
| CN105390625A (en) | Battery cell with housing having tubular projections | |
| JP7108532B2 (en) | Method for manufacturing power storage module | |
| JP6858165B2 (en) | Power storage module and manufacturing method of power storage module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |