CN102479972A - Lithium ion secondary battery - Google Patents
Lithium ion secondary battery Download PDFInfo
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- CN102479972A CN102479972A CN2010105651000A CN201010565100A CN102479972A CN 102479972 A CN102479972 A CN 102479972A CN 2010105651000 A CN2010105651000 A CN 2010105651000A CN 201010565100 A CN201010565100 A CN 201010565100A CN 102479972 A CN102479972 A CN 102479972A
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- plane
- nail
- circular hole
- rivet
- 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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Abstract
The invention provides a lithium ion secondary battery, comprising a casing which is open at both ends, cover plates for respectively sealing the openings of both ends of the casing, an electrical core and electrolyte arranged in a cavity formed by the casing and the cover plates, wherein the cover plates comprise cover plate bodies and rivets, two ends of the electrical core respectively lead out a first tab and a second tab, the first tab and the second tab are respectively electrically connected with the rivets of the cover plates of the two ends, the cover plate bodies are provided with non-circular holes matching with the rivets, the rivets are equipped through the non-circular holes, and insulation sealing members are arranged between the cover plate bodies and the rivets for insulating the cover plate bodies and the rivets. According to the invention, the lithium ion secondary battery disclosed herein adopts non-circular non-circular rivets, thus the lithium ion secondary battery has high anti-extraneous distortion force, can not rotate with outside force to lead to battery leakage, and has good safety performance.
Description
Technical field
The invention belongs to field of batteries, relate in particular to a kind of lithium rechargeable battery.
Background technology
Lithium dynamical battery becomes the ideal power source that the modern means of communication are used owing to have advantages such as pollution-free, low-cost, that capacity is high, have extended cycle life.Lithium ion battery is after positive plate, barrier film, negative plate are reeled or be stacked to pole piece, and pole piece is put into the cavity that battery container and cover plate form, and inner injection electrolyte obtains after step such as changing into through sealing.Cover plate 100 of the prior art ' structure as shown in Figure 1, comprise cover board body 6 ', circle draw post 1 ', cover board body 6 ' and circular draw post 1 ' between seal 5 ', circle draw post 1 ' directly pass seal 5 '.Battery is in use because external shock causes power brick to be distorted, and the interior cell junction of bag circle is drawn post 1 ' meeting and rotated with distortion, causes seal failure inside battery electrolyte from drawing post 1 ' leakage.
When electrokinetic cell was used in the modern means of communication, anti-twist and cell resistance had harsher requirement to battery.For example automobile is in the process of moving because different vibrations or extreme accident takes place, the power brick distortion that can be distorted on the car, and circular rivet that electrokinetic cell adopted or circle are drawn post with the distortion rotation, cause battery leakage.
Summary of the invention
The invention solves in the prior art battery adopts circular rivet or circular to draw post to be prone to rotate with the battery distortion and to cause the technical problem of battery leakage.
The invention provides a kind of lithium rechargeable battery, comprise the shell of both ends open, respectively the can both ends open cover plate and be positioned at shell and the electric core and the electrolyte of cavity that cover plate surrounds; Cover plate comprises cover board body and rivet; The two ends of electricity core lead to first lug and second lug respectively, and first lug, second lug are electrically connected with the rivet of two end cover plate respectively; Cover board body is provided with the non-circular hole with the rivet shape coupling, and rivet is arranged in this non-circular hole, also is provided with the insulating sealer that is used to make cover board body and rivet insulation between cover board body and the rivet.
Lithium rechargeable battery provided by the invention; On cover board body, be arranged at the non-circular hole of rivet shape coupling; And in this non-circular hole, wear non-circular rivet, and non-circular rivet is difficult for rotating with the battery distortion, and 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.
Description of drawings
Fig. 1 be an end of the lithium rechargeable battery that provides of prior art cover plate 100 ' structural representation.
Fig. 2 is the main cutaway view of cover plate 100 of an 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 first lead-out tablet 11 among Fig. 2.
Fig. 6 is the structural representation of second lead-out tablet 12 among Fig. 2.
Fig. 7 is the structural representation of lithium rechargeable battery provided by the invention.
Embodiment
Clearer for technical problem, technical scheme and beneficial effect that the present invention is solved, below in conjunction with accompanying drawing and embodiment, the present invention is further elaborated.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.
The invention provides a kind of lithium rechargeable battery, comprise the shell 200 of both ends open, the cover plate 100 of can 200 both ends opens respectively, and be positioned at electric core 300 and electrolyte that shell 200 and 100 of cover plates surround cavity.
Among the present invention, the structure of the cover plate 100 at lithium rechargeable battery two ends is identical, mainly the cover plate 100 of battery upper end is described below in conjunction with accompanying drawing.Cover plate 100 comprises cover board body 6 and rivet 3.The two ends of electricity core 300 lead to first lug and second lug respectively, and first lug, 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, also is provided with the insulating sealer 5 that is used to make cover board body 6 and rivet 3 insulation between cover board body 6 and the rivet 3.
Among the present invention, do not have particular determination for the positive and negative polarity of first lug, second lug, promptly any end of lithium rechargeable battery of the present invention all can be positive pole, and the other end then should be negative pole mutually.For example first lug is anodal, and second lug then is a negative pole; Perhaps first lug is a negative pole, and second lug is anodal.
As shown in Figure 3, rivet 3 comprises nail body 30 and nail body 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 surfaces respectively.Nail body 30 is arranged in the non-circular hole of cover board body 6.Insulating sealer 5 comprises first insulating part 51, second insulating sealer 52 and the 3rd insulating sealer 53 of integrative-structure.First insulating sealer 51 is between the non-circular hole inner surface of nail body 30 and cover board body 6; Second insulating sealer 52 is between first head of a nail 31 and cover board body 6 upper surfaces, and the 3rd insulating sealer 53 is between second head of a nail 32 and cover board body 6 lower surfaces.
Among the present invention, insulating sealer 5 can adopt moulding, and the Shi Buhui that is squeezed changes, and can not produce the gap between cover board body 6 and the rivet 3, can effectively prevent battery leakage.
First lead-out tablet 11 is positioned at second insulating sealer, 52 upper surfaces, with cover board body 6 insulation, can prevent lithium rechargeable battery short circuit of the present invention.The structure of first lead-out tablet 11 is as shown in Figure 5, has first plane 111, is positioned at first plane, 111 1 sides and is structure as a whole with 111 vertical 112, the first planes 111, second plane and second planes 112, first plane.Have the non-circular hole 114 with rivet 3 form fit on first plane 111, this non-circular hole 114 aligns with the non-circular hole of cover board body 6.
As shown in Figure 4, first plane 111 fits in second insulating sealer, 52 upper surfaces, and is electrically connected with first head of a nail 31.Nail body 30 passes the non-circular hole 114 on first plane 111 and the non-circular hole of cover board body 6 successively, and 31 weeks of first head of a nail are along being welded on first plane 111.As one embodiment of the present invention, first lead-out tablet 11 also has the opposite side that 113, the three planes 112, the 3rd plane are positioned at first plane 111, and vertical with first plane 111, and the 3rd plane 113 and first plane 111 are structure as a whole.Lead-out tablet with the 3rd plane 112,113 planes are used to be connected external electric equipment with 112 planes or battery cell connects.
As shown in Figure 3, second lead-out tablet 12 is positioned at the 3rd insulating sealer 53 lower surfaces of shell 200, with cover board body 6 insulation.The similar of the structure of second lead-out tablet 12 and first lead-out tablet 11, as shown in Figure 6, have Siping City's face 121, be positioned at Siping City's face 121 1 sides and be structure as a whole with Siping City's face 121 vertical the 5th plane 122, the Siping City's faces 121 and the 5th planes 122.Siping City's face 121 fits in the 3rd insulating sealer 53 lower surfaces, and is electrically connected with second head of a nail 32.
Among the present invention, first lead-out tablet 11, second lead-out tablet 12 all are structure as a whole, and therefore can better resist extraneous distortion power.
Similarly; Has non-circular hole 124 on Siping City's face 121 with rivet 3 form fit; This non-circular hole 124 aligns with the non-circular hole 114 on first plane 111, the non-circular hole of cover board body 6; Nail body 30 passes week of non-circular hole 124, the second heads of a nail 32 of non-circular hole and Siping City's face 121 of non-circular hole 114, cover board body 6 on first plane 111 successively along being welded on Siping City's face 121.
Under the preferable case, second lead-out tablet 12 also has the opposite side that 123, the six planes 123, the 6th plane are positioned at Siping City's face 121, and vertical with Siping City's face 121, and the 6th plane 123 and Siping City's face 121 are structure as a whole.Second lead-out tablet 12 has two not at conplane 122 and 123; Therefore the lug that is welded on the lithium rechargeable battery inner pole piece of the present invention can with second lead-out tablet 12 near the plane welding; Can reduce the bending of pole piece; Reduce and fall material generation dust in the pole piece bending process, prevent internal short-circuit of battery or micro-short circuit.
First head of a nail 31, second head of a nail, 32 surfaces are respectively equipped with groove 311 and groove 321, and are as shown in Figure 3.The shape of groove is similar with the nail shape.The head of a nail is provided with groove, can make rivet better rivet the back welding.Among the present invention, laser welding is preferably adopted in the welding of the rivet 3 and first lead-out tablet 11, second lead-out tablet 12, can effectively reduce the connection resistance, thereby reduces the internal resistance of cell; On the other hand, laser welding can avoid the long-time back battery resistance of using to drift about.
In the lithium rechargeable battery of the present invention, the rivet of employing is that the non-circular rivet of can avoiding twists with external force, thereby prevents battery leakage.That the shape of said rivet can be is square, triangle or rhombus.Under the preferable case, said rivet is square, as shown in Figure 4.
Among the present invention, the number of rivet 3 on the cover plate 100 is not had particular determination, under the preferable case, the rivet number is 1-4.For example, the number of rivet 3 is 2 on the cover plate shown in Fig. 2 100.Adopt a plurality of rivets can increase the bonding area of rivet and lead-out tablet, thereby further reduce the internal resistance of cell, can also effectively reduce the generation of heat in the battery use.When lithium rechargeable battery of the present invention has a plurality of rivet, a plurality of rivets all with the lead-out tablet welding, and lead-out tablet is structure as a whole, and makes this lithium rechargeable battery can bear bigger electric current.
Among the present invention, the lower end structure of cover plate of lithium rechargeable battery is identical with the upper end cover plate structure, and the rivet of lower cover is electrically connected conducting through the lead-out tablet of lower cover with second lug, repeats no more here.
The assembling of lithium rechargeable battery of the present invention can be carried out as follows: the non-circular hole with rivet 3 form fit is set on cover board body 6 earlier; Cover board body 6 upper and lower surperficial injection-moulded plastics around the inner surface of this non-circular hole and hole are then at injection-moulded plastic surfaces coated fluid sealant; First plane 111 of first lead-out tablet 11 is fitted on cover board body 6 upper surfaces; Siping City's face 121 of second lead-out tablet 12 fits on the lower surface of cover board body 6, makes non-circular 114 holes on first plane 111, the non-circular hole of cover board body 6 and the non-circular hole 123 3 hole co-axially aligns of Siping City's face 121 simultaneously; Again non-circular rivet 3 was passed in the good hole of stack, and rivet shaping, thereby injection-moulded plastic can effectively be compressed formation insulating sealer 5 this moment; After rivet was accomplished, turned up and be welded in respectively on first lead-out tablet 11 and second lead-out tablet 12 in 31,32 week of the head of a nail edge at two ends up and down, thereby obtain cover plate 100; Lug with cover plate 100 and electric core 300 1 ends welds then; After the welding electric core 300 is penetrated shell 200; Make cover plate 100 edges contact and weld with shell 200; The cover plate 100 of on electric core 300 other end lugs, also burn-oning then makes cover plate 100 edges contact shell 200, welds; Inject electrolyte again the liquid injection hole from cover board body 6 61 and flood electric core, finally sealed liquid injection hole 6 can obtain lithium rechargeable battery of the present invention.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. lithium rechargeable battery, comprise the shell of both ends open, respectively the can both ends open cover plate and be positioned at shell and the electric core and the electrolyte of cavity that cover plate surrounds; Cover plate comprises cover board body and rivet; The two ends of electricity core lead to first lug and second lug respectively, and first lug, 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 with the rivet shape coupling, rivet is arranged in this non-circular hole, also is provided with the insulating sealer that is used to make cover board body and rivet insulation between cover board body and the rivet.
2. lithium rechargeable battery according to claim 1 is characterized in that, rivet comprises the nail body with nail body two ends and be riveted on first head of a nail and second head of a nail of cover board body upper and lower surfaces respectively, and the nail body is arranged in the non-circular hole of cover board body; Insulating sealer comprises first insulating sealer, second insulating sealer and the 3rd insulating sealer of integrative-structure; First insulating sealer is between the non-circular hole inner surface of nail body and 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, cover plate also comprises first lead-out tablet that is electrically connected with first head of a nail and second lead-out tablet that is electrically connected with second head of a nail; The other end of second lead-out tablet is electrically connected with first lug.
4. lithium rechargeable battery according to claim 3; It is characterized in that; First lead-out tablet is positioned at the second insulating sealer upper surface, and first lead-out tablet has first plane, is positioned at first plane, one side and second plane vertical with first plane, and first plane and second plane are structure as a whole; 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; It is characterized in that; Has non-circular hole on first plane with the rivet shape coupling; The non-circular hole on first plane aligns with the non-circular hole of cover board body, in the non-circular hole that the nail body is arranged in first plane successively and the non-circular hole of cover board body, first head of a nail week edge be welded on first plane.
6. lithium rechargeable battery according to claim 4 is characterized in that first lead-out tablet also has the 3rd plane, and the 3rd plane is positioned at the opposite side on first plane and vertical with first plane; The 3rd plane and first plane are structure as a whole.
7. lithium rechargeable battery according to claim 3 is characterized in that, second lead-out tablet is positioned at the 3rd insulating sealer lower surface; Second lead-out tablet has Siping City's face, is positioned at Siping City's face one side and five plane vertical with Siping City's face, and Siping City's face and the 5th plane are structure as a whole; Siping City's face fits in the 3rd insulating sealer lower surface, and is electrically connected with second head of a nail.
8. lithium rechargeable battery according to claim 7; It is characterized in that; Has non-circular hole on Siping City's face with the rivet shape coupling; Quadriplanar non-circular hole aligns with the non-circular hole of cover board body, and the nail body is arranged in the non-circular hole and quadriplanar non-circular hole of cover board body successively, and second head of a nail week is along being welded on Siping City's face.
9. lithium rechargeable battery according to claim 7 is characterized in that second lead-out tablet also has the 6th plane, and the 6th plane is positioned at Siping City's face opposite side and vertical with Siping City's face; The 6th plane and Siping City's face are structure as a whole.
10. lithium rechargeable battery according to claim 2 is characterized in that, first head of a nail, second head of a nail surface have groove.
11. lithium rechargeable battery according to claim 1 is characterized in that, rivet is square.
12. lithium rechargeable battery according to claim 1 is characterized in that, the 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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| Publication Number | Publication Date |
|---|---|
| CN102479972A true CN102479972A (en) | 2012-05-30 |
| CN102479972B CN102479972B (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
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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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| CN (1) | CN102479972B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018046000A (en) * | 2016-09-08 | 2018-03-22 | 株式会社Ｇｓユアサ | Power storage element |
| CN107846819A (en) * | 2017-11-07 | 2018-03-27 | 奇鋐科技股份有限公司 | Heat abstractor is airtight to run through structure |
Citations (5)
| 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 |
| 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 |
| CN101960647A (en) * | 2008-02-29 | 2011-01-26 | 日产自动车株式会社 | Battery module and method for producing battery module |
-
2010
- 2010-11-30 CN CN201010565100.0A patent/CN102479972B/en active Active
Patent Citations (5)
| 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 |
| CN101960647A (en) * | 2008-02-29 | 2011-01-26 | 日产自动车株式会社 | Battery module and method for producing battery module |
| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018046000A (en) * | 2016-09-08 | 2018-03-22 | 株式会社Ｇｓユアサ | Power storage element |
| CN107846819A (en) * | 2017-11-07 | 2018-03-27 | 奇鋐科技股份有限公司 | Heat abstractor is airtight to run through structure |
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| Publication number | Publication date |
|---|---|
| CN102479972B (en) | 2015-09-02 |
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