CN102569682B - Battery cover plate assembly and lithium-ion secondary battery thereof - Google Patents
Battery cover plate assembly and lithium-ion secondary battery thereof Download PDFInfo
- Publication number
- CN102569682B CN102569682B CN201010607999.8A CN201010607999A CN102569682B CN 102569682 B CN102569682 B CN 102569682B CN 201010607999 A CN201010607999 A CN 201010607999A CN 102569682 B CN102569682 B CN 102569682B
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- Prior art keywords
- rivet
- cover plate
- hole
- board assembly
- cover board
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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)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention belongs to the field of a lithium-ion battery, provides a battery cover plate assembly, and comprises a cover plate, an insulation sealing element and a rivet. The cover plate is provided with a through hole, the insulation sealing element penetrates through the through hole to respectively extend to the inner surface and the outer surface of the cover plate to form an inside turn-up edge and an outside turn-up edge, and the portion of the insulation sealing element penetrating through the through hole forms a rivet hole. The insulation sealing element enables the rivet and the cover plate to be insulated. The rivet comprises an inner rivet located on the inside of the cover plate and an outer rivet located on the outside of the cover plate, the inner rivet comprises a connecting column inserted in the rivet hole in penetrating mode, and the outer rivet comprises a groove right opposite to the rivet hole. The inner rivet is electrically connected with the outer rivet through matching of the connecting column and the groove. The battery cover plate assembly solves the problem of leakage caused by looseness of the cover plate in a battery using process.
Description
Technical field
The invention belongs to lithium ion battery field, relate in particular to a kind of battery cover board assembly and use the lithium rechargeable battery of this cover plate assembly.
Background technology
The advantage such as lithium dynamical battery is pollution-free owing to having, low cost, capacity are high, have extended cycle life, has become the ideal power source that the modern means of communication are used.
Positive active material for lithium ion battery is generally lithium transition-metal oxide, negative electrode active material is material with carbon element, conventionally contains the electrolytic salts such as organic solvent and lithium hexafluoro phosphate, LiBF4, hexafluoroarsenate lithium, lithium perchlorate, lithium halide, chlorine lithium aluminate, fluorocarbon based fluorine oxygen lithium phosphate and fluorocarbon based Sulfonic Lithium such as ethylene carbonate (EC), propene carbonate (PC), diethyl carbonate (DEC), methyl ethyl carbonate (EMC), dimethyl carbonate (DMC) in electrolyte.When battery in use has external shock, cause spilling electrolyte in lead-out tablet sealing place.
When electrokinetic cell is used in the modern means of communication, harsher to the requirement of battery hermetization.Be used on automobile, in driving process, can produce different vibrations, will cause in such event battery seal fluffing in varying degrees, cause battery leakage, when more serious, electrolyte can corrode other structural member and causes short-circuit fire, causes security incident.
As shown in Figure 1, traditional battery cover board assembly is all generally that simple cover plate 1, insulating sealer 2 and single rivet 12 combine.This cover plate in use, is easy to fluff because vibrations make single rivet, causes battery leakage.
Summary of the invention
The present invention solves existing battery cover board in use because of the fluff technical problem of leakage of vibrations, a kind of good sealing effect, safety is provided, can effectively prevents cover plate assembly and the lithium rechargeable battery thereof of leakage in battery use procedure.
For achieving the above object, cover plate assembly provided by the invention has following characteristics:
A kind of battery cover board assembly, comprises cover plate, insulating sealer and rivet.
On cover plate, have through hole; Insulating sealer extends to form in-flanges and flanging to inside and outside two surfaces of cover plate respectively through described through hole, and on insulating sealer, the part through described through hole forms rivet hole; Insulating sealer is by described rivet and cover plate insulation; Wherein:
Rivet comprises the rivet that is positioned at cover plate inner side and the outer rivet that is positioned at cover plate outside, and interior rivet comprises the joint pin interting in rivet hole, and outer rivet comprises the just groove to rivet hole; Interior rivet is electrically connected by joint pin and coordinating of groove with outer rivet.
The boss that above-mentioned through hole surrounding has flange to form.
On the joint face of above-mentioned insulating sealer and cover plate and with the joint face of rivet on all scribble fluid sealant; In-flanges and flanging all one side are attached on rivet, and another side pastes on the cover board.
The center line of above-mentioned interior rivet, outer rivet, through hole and rivet hole overlaps.
The slightly larger in diameter of above-mentioned groove is in the diameter of joint pin.
The one side that above-mentioned interior rivet pastes insulating sealer is provided with the seal convexity identical with shape of through holes.
The diameter of above-mentioned seal convexity is greater than the diameter of through hole.
Above-mentioned joint pin is connected with the welding manner that electrically connects as of groove.
Above-mentioned joint pin is threaded with electrically connecting as of groove.
To achieve these goals, the present invention also provides a kind of lithium rechargeable battery, comprises battery cover board assembly, housing, pole piece and electrolyte.Pole piece and electrolyte are encapsulated in the seal cavity of above-mentioned housing and battery cover board assembly formation; Wherein, above-mentioned battery cover board assembly is battery cover board assembly provided by the invention.
The present invention adopts that interior rivet welds with the mode that outer rivet coordinates, seal cover board, and this way can be pressed into insulating sealer, makes insulating sealer produce compression, realizes better sealing effectiveness; Solve assembly in use because of the fluff problem of leakage of vibrations.
Brief description of the drawings
Fig. 1 is the cover plate assembly schematic diagram that prior art provides;
Fig. 2 is cover plate assembly overall diagram provided by the invention;
Fig. 3 is cover plate through hole schematic diagram;
Fig. 4 is that insulating sealer is installed and position view;
Fig. 5 is integral battery door schematic diagram provided by the invention;
Fig. 6 is the enlarged drawing at A place in Fig. 2.
Description of reference numerals:
1-cover plate 2-insulating sealer 3-through hole
The outer rivet of rivet 6-in 4-rivet hole 5-
7-boss 8-seal convexity 9-housing
The mono-rivet of 10-pole piece 11-electrolyte 12-
21-in-flanges 22-flanging
51-joint pin 61-groove
Embodiment
In order to make technical problem solved by the invention, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
From Fig. 2～4, battery cover board assembly provided by the invention comprises cover plate 1, insulating sealer 2 and rivet.On cover plate 1, have through hole 3, from through hole 3, injection moulding obtains insulating sealer 2; Wherein, from through hole 3, to obtain insulating sealer 2 are known technologies common in this area in injection moulding, as long as those skilled in the art can understand, so this explains no longer more.Insulating sealer 2 extends to inside and outside two surfaces of cover plate 1 respectively through through hole 3, form in-flanges 21 and flanging 22, and insulating sealer 2 forms rivet hole 4 through the part of through hole 3; Above-mentioned concrete insulating sealer 2 is through the mode of through hole 3 and form in-flanges 21 and flanging 22 is all the technology that the art personnel know, and does not add to explain at this.Those skilled in the art person knows, insulating sealer 2 is for separating rivet and cover plate 1, insulate.
The rivet that the present invention mentions, comprises the rivet 5 that is positioned at cover plate 1 inner side and the outer rivet 6 that is positioned at cover plate 1 outside, as shown in Figure 2.Wherein, interior rivet 5 comprises the joint pin 51 interting in rivet hole 4, and outer rivet 6 comprises the just groove 61 to rivet hole 4, as shown in accompanying drawing 2～4.Interior rivet 5 welds together by joint pin 51 and coordinating of groove 61 with outer rivet 6; Wherein, the joint pin 51 of interior rivet 5 is the groove 61 of rivet 6 just externally, the stack of rivet 5 and outer rivet 6 in forming, then joint pin 51 and groove 61 are electrically connected, reach the welding of interior rivet 5 and outer rivet 6.Wherein, electrical connection can be welding, by welding manner, joint pin 51 and groove 61 is linked together; Being electrically connected between joint pin 51 and groove 61 can also be thread connecting mode, such as external screw thread being set on joint pin 51 tops, in groove 61 inside, internal thread being set, by the combination of external screw thread and internal thread, joint pin 51 and groove 61 linked together.The relative position of outer rivet 6 and interior rivet 5 can be more accurately located in the connection of above-mentioned cover plate assembly, has prevented that outer rivet 6 from misplacing with interior rivet 5, causes battery short circuit.
As shown in Figure 3, through hole 3, to peripheral flanging, forms boss 7, and then forms a sealing ring, strengthens the sealing property of cover plate 1.Much more no longer the flange technology that this process is used is the known technology of the art personnel, to explain at this.
The insulating sealer 2 that the present invention adopts, on the joint face of itself and cover plate 1 and with the joint face of rivet on all scribble fluid sealant, described fluid sealant is exactly the conventional sealing glue in this area; In-flanges 21 is all that one side is attached on corresponding rivet with flanging 22, and another side is attached on cover plate 1.So do and can better seal miniature gap, avoid battery chronic leakage in use.
In addition, above-mentioned interior rivet 5, outer rivet 6, cover plate 1 and insulating sealer 2 are superimposed upon on same center line, as shown in Figure 2.
The diameter of above-mentioned groove 61 is greater than the diameter of joint pin 51, so that the welding between interior rivet 5 and outer rivet 6.The one side that interior rivet 5 pastes insulating sealer 2 is provided with than the large but similar seal convexity 8 of shape of through hole 3 diameters, as Fig. 6.Interior rivet 5 can push with insulating sealer 2 contact-making surfaces on seal convexity 8 form sealing ring face, after adding seal convexity 8, can further strengthen compression to insulating sealer 2, reach better sealing effectiveness, also can absorb welding time, interior rivet 5 compresses uneven problem with outer rivet 6 to insulating sealer 2.
In addition, the present invention also provides a kind of lithium rechargeable battery, comprises battery cover board assembly, housing 9, pole piece 10 and electrolyte 11, as shown in Figure 5.The same with the known technology of this area, the pole piece 10 of this lithium rechargeable battery and electrolyte 11 are encapsulated in the seal cavity of housing 9 and battery cover board assembly formation; Wherein, the battery cover board assembly that this lithium rechargeable battery adopts is battery cover board assembly provided by the invention, has its all character.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a battery cover board assembly, comprises cover plate (1), insulating sealer (2) and rivet;
On described cover plate (1), have through hole (3);
Described insulating sealer (2) extends to form in-flanges (21) and flanging (22) to inside and outside two surfaces of cover plate (1) respectively through described through hole (3), and the upper part through described through hole (3) of insulating sealer (2) forms rivet hole (4);
Described insulating sealer (2) is by described rivet and cover plate (1) insulation;
It is characterized in that: described rivet comprises the rivet (5) that is positioned at cover plate (1) inner side and the outer rivet (6) that is positioned at cover plate (1) outside; Described interior rivet (5) comprises the joint pin (51) interting in rivet hole (4), and outer rivet (6) comprises the just groove to rivet hole (4) (61); Described interior rivet (5) is electrically connected by joint pin (51) and coordinating of groove (61) with outer rivet (6); Described in-flanges (21) one side is fitted with interior rivet 5, another side and cover plate (1) laminating; Flanging (22) one side and outer rivet (6) laminating, another side and cover plate (1) laminating.
2. battery cover board assembly as claimed in claim 1, is characterized in that: the boss (7) that described through hole (3) surrounding has flange to form.
3. battery cover board assembly as claimed in claim 1, is characterized in that: on the joint face of described insulating sealer (2) and cover plate (1) and with the joint face of rivet on all scribble fluid sealant; Described in-flanges (21) and flanging (22) all one side are attached on rivet, and another side is attached on cover plate (1).
4. battery cover board assembly as claimed in claim 1, is characterized in that: the center line of described interior rivet (5), outer rivet (6), through hole (3) and rivet hole (4) overlaps.
5. battery cover board assembly as claimed in claim 1, is characterized in that: the slightly larger in diameter of described groove (61) is in the diameter of joint pin (51).
6. battery cover board assembly as claimed in claim 1, is characterized in that: the one side that described interior rivet (5) pastes insulating sealer (2) is provided with the seal convexity (8) identical with through hole (3) shape.
7. battery cover board assembly as claimed in claim 6, is characterized in that: the diameter of described seal convexity (8) is greater than the diameter of through hole (3).
8. battery cover board assembly as claimed in claim 1, is characterized in that: the welding manner that electrically connects as between described joint pin (51) and groove (61) is connected.
9. battery cover board assembly as claimed in claim 1, is characterized in that: electrically connecting as between described joint pin (51) and groove (61) is threaded.
10. a lithium rechargeable battery, comprises battery cover board assembly, housing (9), pole piece (10) and electrolyte (11), and described pole piece (10) and electrolyte (11) are encapsulated in the seal cavity of described housing (9) and battery cover board assembly formation;
It is characterized in that: described battery cover board assembly is the battery cover board assembly described in claim 1 ~ 9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010607999.8A CN102569682B (en) | 2010-12-25 | 2010-12-25 | Battery cover plate assembly and lithium-ion secondary battery thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010607999.8A CN102569682B (en) | 2010-12-25 | 2010-12-25 | Battery cover plate assembly and lithium-ion secondary battery thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102569682A CN102569682A (en) | 2012-07-11 |
| CN102569682B true CN102569682B (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010607999.8A Active CN102569682B (en) | 2010-12-25 | 2010-12-25 | Battery cover plate assembly and lithium-ion secondary battery thereof |
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| CN (1) | CN102569682B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109103033A (en) * | 2018-09-12 | 2018-12-28 | 张拉社 | A kind of end cap collector plate assembly of supercapacitor and power battery |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN201655906U (en) * | 2010-03-11 | 2010-11-24 | 昇阳国际半导体股份有限公司 | Secondary battery |
| CN201936927U (en) * | 2010-12-25 | 2011-08-17 | 比亚迪股份有限公司 | Battery cover plate component and lithium-ion secondary battery |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000138055A (en) * | 1998-11-02 | 2000-05-16 | Japan Storage Battery Co Ltd | Nonaqueous electrolyte battery |
| KR100976452B1 (en) * | 2008-01-23 | 2010-08-17 | 삼성에스디아이 주식회사 | Rechargeable battery |
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2010
- 2010-12-25 CN CN201010607999.8A patent/CN102569682B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN201655906U (en) * | 2010-03-11 | 2010-11-24 | 昇阳国际半导体股份有限公司 | Secondary battery |
| CN201936927U (en) * | 2010-12-25 | 2011-08-17 | 比亚迪股份有限公司 | Battery cover plate component and lithium-ion secondary battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102569682A (en) | 2012-07-11 |
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