CN102479972B - A kind of lithium rechargeable battery - Google Patents
A kind of lithium rechargeable battery Download PDFInfo
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- CN102479972B CN102479972B CN201010565100.0A CN201010565100A CN102479972B CN 102479972 B CN102479972 B CN 102479972B CN 201010565100 A CN201010565100 A CN 201010565100A CN 102479972 B CN102479972 B CN 102479972B
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- plane
- rivet
- board body
- cover board
- circular hole
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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
Abstract
The invention provides a kind of lithium rechargeable battery, comprise the shell of both ends open, respectively can both ends open cover plate and be positioned at shell and cover plate surround battery core and the electrolyte of cavity; Cover plate comprises cover board body and rivet; The two ends of battery core lead to the first lug and the second lug respectively, and the first lug, the second lug are electrically connected with the rivet of two end cover plate respectively; Cover board body is provided with the non-circular hole mated with rivet shape, and rivet is arranged in this non-circular hole, is also provided with the insulating sealer for making cover board body and rivet insulation between cover board body and rivet.Lithium rechargeable battery of the present invention adopts non-circular rivet, has higher anti-extraneous distortion power, can not rotate and cause battery leakage, have good security performance with external force.
Description
Technical field
The invention belongs to field of batteries, particularly relate to a kind of lithium rechargeable battery.
Background technology
Lithium dynamical battery, owing to having the advantages such as pollution-free, low cost, capacity are high, have extended cycle life, becomes the ideal power source of the modern means of communication.Lithium ion battery is by positive plate, barrier film, negative plate winding or after being stacked to pole piece, pole piece is put into the cavity of battery container and cover plate formation, the inner electrolyte that injects obtains after the steps such as sealing changes into.The structure of cover plate 100 ' of the prior art as shown in Figure 1, comprises cover board body 6 ', circular extraction post 1 ', at cover board body 6 ' and circular seal 5 ' of drawing between post 1 ', circular post 1 ' of drawing directly passes seal 5 '.Battery, in use due to external shock, causes power brick to be distorted, and in bag, cell junction circle extraction post 1 ' can rotate with distortion, causes seal failure inside battery electrolyte to leak from extraction post 1 '.
When electrokinetic cell is used in the modern means of communication, to battery, anti-twist and cell resistance has more rigors.Such as automobile is in the process of moving due to different vibrations or extreme accident occurs, and on car, power brick can be distorted distortion, and the rounded rivets that electrokinetic cell adopts or circular post of drawing rotate with distortion, cause battery leakage.
Summary of the invention
The invention solves in prior art battery adopts rounded rivets or circular post of drawing easily to rotate with battery distortion and cause the technical problem of battery leakage.
The invention provides a kind of lithium rechargeable battery, comprise the shell of both ends open, respectively can both ends open cover plate and be positioned at shell and cover plate surround battery core and the electrolyte of cavity; Cover plate comprises cover board body and rivet; The two ends of battery core lead to the first lug and the second lug respectively, and the first lug, the second lug are electrically connected with the rivet of two end cover plate respectively; Cover board body is provided with the non-circular hole mated with rivet shape, and rivet is arranged in this non-circular hole, is also provided with the insulating sealer for making cover board body and rivet insulation between cover board body and rivet.
Lithium rechargeable battery provided by the invention, cover board body is arranged at the non-circular hole of rivet shape coupling, and non-circular rivet is worn in this non-circular hole, non-circular rivet not easily rotates with battery distortion, this non-circular rivet has higher anti-extraneous distortion power, adopt the battery of this non-circular rivet can not produce in the dead of night, battery has good security performance.
Accompanying drawing explanation
Fig. 1 is the structural representation of the cover plate 100 ' of the one end of the lithium rechargeable battery that prior art provides.
Fig. 2 is the main cutaway view of the cover plate 100 of one end of lithium rechargeable battery provided by the invention.
Fig. 3 is the A-A ' cutaway view of Fig. 2 cover plate 100.
Fig. 4 is the vertical view of Fig. 2 cover plate 100.
Fig. 5 is the structural representation of the first lead-out tablet 11 in Fig. 2.
Fig. 6 is the structural representation of the second lead-out tablet 12 in Fig. 2.
Fig. 7 is the structural representation of lithium rechargeable battery provided by the invention.
Embodiment
In order to make technical problem solved by the invention, technical scheme and beneficial effect clearly understand, 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, be not intended to limit the present invention.
The invention provides a kind of lithium rechargeable battery, comprise the cover plate 100 of the shell 200 of both ends open, respectively can 200 both ends open, and be positioned at shell 200 and cover plate 100 surround battery core 300 and the electrolyte of cavity.
In the present invention, the structure of the cover plate 100 at lithium rechargeable battery two ends is identical, is mainly described the cover plate 100 of battery upper end below in conjunction with accompanying drawing.Cover plate 100 comprises cover board body 6 and rivet 3.The two ends of battery core 300 lead to the first lug and the second lug respectively, and the first lug, the second lug are electrically connected with the rivet 3 of two end cover plate 100 respectively.The cover board body 6 of cover plate 100 is provided with non-circular hole, and rivet 3 is arranged in this non-circular hole, is also provided with the insulating sealer 5 for making cover board body 6 and rivet 3 insulate between cover board body 6 and rivet 3.
In the present invention, the positive and negative polarity for the first lug, the second lug is not particularly limited, and namely any one end of lithium rechargeable battery of the present invention all can be positive pole, and the other end then should be negative pole mutually.Such as the first lug is positive pole, and the second lug is then negative pole; Or the first lug is negative pole, the second lug is positive pole.
As shown in Figure 3, rivet 3 comprises rivet nut 30 and rivet nut 30 two ends and is riveted on first head of a nail 31 and second head of a nail 32 of cover board body 6 upper and lower surface respectively.Rivet nut 30 is arranged in the non-circular hole of cover board body 6.Insulating sealer 5 comprises the first insulating part 51, second insulating sealer 52 and the 3rd insulating sealer 53 of integrative-structure.First insulating sealer 51 is between rivet nut 30 and the non-circular hole inner surface of cover board body 6, second insulating sealer 52 is between first head of a nail 31 and cover board body 6 upper surface, and the 3rd insulating sealer 53 is between second head of a nail 32 and cover board body 6 lower surface.
In the present invention, insulating sealer 5 can adopt moulding, can not change when being squeezed, and can not produce gap between cover board body 6 and rivet 3, effectively can prevent battery leakage.
Cover plate assembly 100 also comprises the first lead-out tablet 11 be electrically connected with first head of a nail 31, and the second lead-out tablet 12 be electrically connected with second head of a nail 32.First lead-out tablet 11 is positioned at above cover board body 6, for being connected with external electric equipment or battery cell; Second lead-out tablet 12 is positioned at shell 200, and the other end is electrically connected with the first lug that battery core 300 is drawn.
First lead-out tablet 11 is positioned at the second insulating sealer 52 upper surface, insulate with cover board body 6, can prevent lithium rechargeable battery short circuit of the present invention.The structure of the first lead-out tablet 11 as shown in Figure 5, has the first plane 111, is positioned at the first plane 111 side and second plane 112, first plane 111 vertical with the first plane 111 and the second plane 112 are structure as a whole.First plane 111 has the non-circular hole 114 with rivet 3 form fit, this non-circular hole 114 aligns with the non-circular hole of cover board body 6.
As shown in Figure 4, the first plane 111 fits in the second insulating sealer 52 upper surface, and is electrically connected with first head of a nail 31.Rivet nut 30 is successively through the non-circular hole 114 of the first plane 111 and the non-circular hole of cover board body 6, and first head of a nail 31 weeks is along being welded in the first plane 111.As one embodiment of the present invention, the first lead-out tablet 11 also has the opposite side that the 3rd plane the 113, three plane 112 is positioned at the first plane 111, and vertical with the first plane 111, and the 3rd plane 113 and the first plane 111 are structure as a whole.Have the lead-out tablet of the 3rd plane 112,113 planes and 112 planes are for being connected external electric equipment or battery cell connection.
As shown in Figure 3, the second lead-out tablet 12 is positioned at the 3rd insulating sealer 53 lower surface of shell 200, insulate with cover board body 6.The structure of the second lead-out tablet 12 and the similar of the first lead-out tablet 11, as shown in Figure 6, have the 4th plane 121, be positioned at the 4th plane 121 side and five plane 122, four plane 121 vertical with the 4th plane 121 and the 5th plane 122 are structure as a whole.4th plane 121 fits in the 3rd insulating sealer 53 lower surface, and is electrically connected with second head of a nail 32.
In the present invention, the first lead-out tablet 11, second lead-out tablet 12 is all structure as a whole, and therefore can better resist extraneous distortion power.
Similarly, 4th plane 121 has the non-circular hole 124 with rivet 3 form fit, this non-circular hole 124 aligns with the non-circular hole 114 of the first plane 111, the non-circular hole of cover board body 6, rivet nut 30 is welded in the 4th plane 121 through the week edge of non-circular hole 124, second head of a nail 32 of the non-circular hole 114 of the first plane 111, the non-circular hole of cover board body 6 and the 4th plane 121 successively.
Under preferable case, the second lead-out tablet 12 also has the opposite side that the 6th plane the 123, six plane 123 is positioned at the 4th plane 121, and vertical with the 4th plane 121, and the 6th plane 123 and the 4th plane 121 are structure as a whole.Second lead-out tablet 12 has two not in conplane face 122 and 123, therefore lug lithium rechargeable battery inner pole piece of the present invention welded can be close with the second lead-out tablet 12 plane-welding, the bending of pole piece can be reduced, reduce in pole piece bending process and fall material generation dust, prevent internal short-circuit of battery or micro-short circuit.
First head of a nail 31, second head of a nail 32 surface is respectively equipped with groove 311 and groove 321, as shown in Figure 3.The shape of groove is similar to rivet nut shape.The head of a nail is provided with groove, and rivet can be made better to rivet rear welding.In the present invention, rivet 3 preferably adopts laser welding with the first welding of lead-out tablet 12 of lead-out tablet 11, second, can effectively reduce connection resistance, thus reduces the internal resistance of cell; On the other hand, after laser welding can avoid long-time use, battery resistance is drifted about.
In lithium rechargeable battery of the present invention, the rivet of employing is that non-circular rivet of can avoiding twists with external force, thus prevents battery leakage.The shape of described rivet can be square, triangle or rhombus.Under preferable case, described rivet is square, as shown in Figure 4.
In the present invention, be not particularly limited the number of rivet 3 on cover plate 100, under preferable case, rivet number is 1-4.Such as, on the cover plate 100 shown in Fig. 2, the number of rivet 3 is 2.Adopt multiple rivet can increase the bonding area of rivet and lead-out tablet, thus reduce the internal resistance of cell further, effectively can also reduce the generation of heat in battery use procedure.When lithium rechargeable battery of the present invention has multiple rivet, multiple rivet all welds with lead-out tablet, and lead-out tablet is structure as a whole, and makes this lithium rechargeable battery can bear larger electric current.
In the present invention, the structure of the lower end cover plate of lithium rechargeable battery is identical with upper end cover plate structure, and the rivet of lower cover is electrically connected conducting by the lead-out tablet of lower cover with the second lug, repeats no more herein.
The assembling of lithium rechargeable battery of the present invention can be carried out as follows: first on cover board body 6, arrange the non-circular hole with rivet 3 form fit, the upper and lower surperficial injection-moulded plastic of cover board body 6 around the inner surface and hole of this non-circular hole, is then coated with fluid sealant on injection-moulded plastic surface; First plane 111 of the first lead-out tablet 11 is fitted on cover board body 6 upper surface, 4th plane 121 of the second lead-out tablet 12 fits on the lower surface of cover board body 6, makes the non-circular hole 123 3 hole co-axially align of non-circular 114 holes of the first plane 111, the non-circular hole of cover board body 6 and the 4th plane 121 simultaneously; Passed by non-circular rivet 3 in the hole superposed, and carry out riveted joint shaping, now injection-moulded plastic effectively can be compressed thus be formed insulating sealer 5; After rivet completes, turning up and be welded in respectively on the first lead-out tablet 11 and the second lead-out tablet 12 in the head of a nail 31,32 weeks edges at upper and lower two ends, thus obtains cover plate 100; Then by the tab welding of cover plate 100 and battery core 300 one end, after welding, battery core 300 is penetrated shell 200, cover plate 100 edge is made to contact with shell 200 and weld, then also to burn-on on battery core 300 other end lug cover plate 100, make cover plate 100 edge contact shell 200, weld; From the liquid injection hole 61 cover board body 6, inject electrolyte dipping battery core again, finally sealed liquid injection hole 6, can obtain lithium rechargeable battery of the present invention.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. a lithium rechargeable battery, comprise the shell of both ends open, respectively can both ends open cover plate and be positioned at shell and cover plate surround battery core and the electrolyte of cavity; Cover plate comprises cover board body and rivet; The two ends of battery core lead to the first lug and the second lug respectively, and the first lug, the second lug are electrically connected with the rivet of two end cover plate respectively; It is characterized in that, cover board body is provided with the non-circular hole mated with rivet shape, and rivet is arranged in this non-circular hole, is also provided with the insulating sealer for making cover board body and rivet insulation between cover board body and rivet;
Rivet comprises rivet nut and rivet nut two ends and is riveted on first head of a nail and second head of a nail of cover board body upper and lower surface respectively;
Cover plate also comprises the first lead-out tablet be electrically connected with first head of a nail and the second lead-out tablet be electrically connected with second head of a nail; First lead-out tablet has the first plane, be positioned at the first plane side and with the second plane of the first plane orthogonal, the first plane and the second plane are structure as a whole; First plane has the non-circular hole mated with rivet shape, the non-circular hole of the first plane aligns with the non-circular hole of cover board body;
Second lead-out tablet is positioned at the 3rd insulating sealer lower surface; Second lead-out tablet has the 4th plane, be positioned at the 4th plane side and with the 5th plane of the 4th plane orthogonal, the 4th plane and the 5th plane are structure as a whole; 4th plane fits in the 3rd insulating sealer lower surface, and is electrically connected with second head of a nail.
2. lithium rechargeable battery according to claim 1, is characterized in that, rivet nut is arranged in the non-circular hole of cover board body; Insulating sealer comprises the first insulating sealer of integrative-structure, the second insulating sealer and the 3rd insulating sealer, first insulating sealer is between rivet nut and the non-circular hole inner surface of cover board body, second insulating sealer is between first head of a nail and cover board body upper surface, and the 3rd insulating sealer is between second head of a nail and cover board body lower surface.
3. lithium rechargeable battery according to claim 2, is characterized in that, the other end of the second lead-out tablet is electrically connected with the first lug.
4. lithium rechargeable battery according to claim 3, is characterized in that, the first lead-out tablet is positioned at the second insulating sealer upper surface; First plane fits in the second insulating sealer upper surface, and is electrically connected with first head of a nail.
5. lithium rechargeable battery according to claim 4, is characterized in that, rivet nut is arranged in the non-circular hole of the first plane and the non-circular hole of cover board body successively, and the first head of a nail week is along being welded in the first plane.
6. lithium rechargeable battery according to claim 4, is characterized in that, the first lead-out tablet also has the 3rd plane, the 3rd plane be positioned at the first plane opposite side and with the first plane orthogonal; 3rd plane and the first plane are structure as a whole.
7. lithium rechargeable battery according to claim 1, it is characterized in that, 4th plane has the non-circular hole mated with rivet shape, quadriplanar non-circular hole aligns with the non-circular hole of cover board body, in the non-circular hole that rivet nut is arranged in cover board body successively and quadriplanar non-circular hole, the second head of a nail week is along being welded in the 4th plane.
8. lithium rechargeable battery according to claim 1, is characterized in that, the second lead-out tablet also has the 6th plane, the 6th plane be positioned at the 4th plane opposite side and with the 4th plane orthogonal; 6th plane and the 4th plane are structure as a whole.
9. lithium rechargeable battery according to claim 2, is characterized in that, first head of a nail, the second head of a nail surface have groove.
10. lithium rechargeable battery according to claim 1, is characterized in that, rivet is square.
11. lithium rechargeable batteries according to claim 1, is characterized in that, rivet number is 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010565100.0A CN102479972B (en) | 2010-11-30 | 2010-11-30 | A kind of lithium rechargeable battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010565100.0A CN102479972B (en) | 2010-11-30 | 2010-11-30 | A kind of lithium rechargeable battery |
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| CN102479972A CN102479972A (en) | 2012-05-30 |
| CN102479972B true CN102479972B (en) | 2015-09-02 |
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| CN201010565100.0A Active CN102479972B (en) | 2010-11-30 | 2010-11-30 | A kind of lithium rechargeable battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2018046000A (en) * | 2016-09-08 | 2018-03-22 | 株式会社Ｇｓユアサ | Power storage element |
| CN107846819B (en) * | 2017-11-07 | 2021-01-26 | 奇鋐科技股份有限公司 | Airtight penetrating structure of heat dissipation device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1197298A (en) * | 1997-04-22 | 1998-10-28 | 松下电器产业株式会社 | Sealing storage battery and its making method |
| CN1677710A (en) * | 2004-03-30 | 2005-10-05 | 三星Sdi株式会社 | Quadrangular secondary battery having lead plate attached thereto |
| CN201149877Y (en) * | 2008-01-28 | 2008-11-12 | 苏州星恒电源有限公司 | Battery electrode drawing-off sealing structure |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4775436B2 (en) * | 2008-02-29 | 2011-09-21 | 日産自動車株式会社 | Battery module and battery module manufacturing method |
| CN101562241A (en) * | 2009-06-01 | 2009-10-21 | 奇瑞汽车股份有限公司 | Square lithium ion battery terminal post anti-rotation device |
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2010
- 2010-11-30 CN CN201010565100.0A patent/CN102479972B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1197298A (en) * | 1997-04-22 | 1998-10-28 | 松下电器产业株式会社 | Sealing storage battery and its making method |
| CN1677710A (en) * | 2004-03-30 | 2005-10-05 | 三星Sdi株式会社 | Quadrangular secondary battery having lead plate attached thereto |
| CN201149877Y (en) * | 2008-01-28 | 2008-11-12 | 苏州星恒电源有限公司 | Battery electrode drawing-off sealing structure |
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| CN102479972A (en) | 2012-05-30 |
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