CN203574050U - Strap-type battery cell and lithium ion battery - Google Patents
Strap-type battery cell and lithium ion battery Download PDFInfo
- Publication number
- CN203574050U CN203574050U CN201320746558.5U CN201320746558U CN203574050U CN 203574050 U CN203574050 U CN 203574050U CN 201320746558 U CN201320746558 U CN 201320746558U CN 203574050 U CN203574050 U CN 203574050U
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- Prior art keywords
- lug
- pole piece
- electrically connected
- welding
- type electric
- Prior art date
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- Expired - Lifetime
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 21
- 238000003466 welding Methods 0.000 claims abstract description 92
- 239000012212 insulator Substances 0.000 claims abstract description 30
- 230000004888 barrier function Effects 0.000 claims abstract description 18
- 238000003475 lamination Methods 0.000 claims description 58
- 238000004806 packaging method and process Methods 0.000 claims description 13
- 239000003792 electrolyte Substances 0.000 claims description 9
- 239000003292 glue Substances 0.000 claims description 9
- 239000011149 active material Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 6
- 238000005538 encapsulation Methods 0.000 claims description 5
- 239000011888 foil Substances 0.000 abstract 2
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical group [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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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
Abstract
The utility model provides a strap-type battery cell and a lithium ion battery. The strap-type battery cell comprises a first electrode plate, a first electrode lug foil, a first electrode lug, a second electrode plate, a second electrode lug foil, a second electrode lug, a barrier film and a protective adhesive, wherein the first electrode lug is provided with a first insulator, first welding parts and a first external connecting part; the first electrode plate is provided with first welding slots used for accommodating the first welding parts, and a first accommodating slot, and the first welding parts and a first current collector are welded together; the second electrode lug is provided with a second insulator, second welding parts and a second external connecting part; the second electrode plate is provided with second welding slots used for accommodating the second welding parts, and a second accommodating slot, and the second welding parts and a second current collector are welded together; the parts, which face to the first electrode plate electrically connected with the first electrode lug and are isolated and protected by the barrier film, of the second welding parts are accommodated in the first accommodating slots; the parts, which face to the second electrode plate electrically connected with the second electrode lug and are isolated and protected by the barrier film, of the first welding parts are accommodated in the second accommodating slot.
Description
Technical field
The utility model relates to energy storage device field, relates in particular to a kind of lamination type electric core and lithium ion battery.
Background technology
Along with the development of modern society, mobile device presents diversification and variation.As increasing in the screen of mobile phone, function is more and more; Original portable notebook computer develops into the present super utmost point originally; Various PAD and e-book etc.The demand of secondary lithium battery correspondingly also constantly increases, and requires the cruising time of lithium ion battery longer, harsher to the requirement of energy density.
Therefore, how to make full use of the energy density that various means improve battery, the problem that promotes performance of lithium-ion secondary battery seems very urgent.Wherein just expedited the emergence of a kind of new laminated cell structural design, by external lug being embedded in battery core one deck pole piece wherein, other pole pieces connect the mode of energising by lug paper tinsel, promote inside battery space availability ratio, promote the energy density space of laminated batteries, improved the safety and stability of battery simultaneously.
The processing technology of current lamination lithium battery routine, positive/negative plate and barrier film are staggered superimposed, every layer of positive/negative plate welds together by lug paper tinsel, and then with the tab welding of external equipment, so just caused tab to be wasted to this part space between battery core main body, consuming cells inner space, causes the capacity of battery to reduce.
Utility model content
In view of the problem existing in background technology, the purpose of this utility model is to provide a kind of lamination type electric core and lithium ion battery, and it can reduce the waste of the battery core inner space that soldering polar ear causes.
Another object of the present utility model is to provide a kind of lamination type electric core and lithium ion battery, and it can improve the reliability of tab welding.
An object more of the present utility model is to provide a kind of lamination type electric core and lithium ion battery, and it can improve the energy density of battery core.
An object more of the present utility model is to provide a kind of lamination type electric core and lithium ion battery, and it can improve the flexibility of lug design.
Another object of the present utility model is to provide a kind of lamination type electric core and lithium ion battery, and it can guarantee that battery core and packaging bag are intact and mate.
To achieve these goals, in first aspect, the utility model provides a kind of lamination type electric core, and it comprises: a plurality of the first pole pieces, and each first pole piece has the first collector, is formed at the primary diaphragm that contains the first active material on the first collector positive and negative; A plurality of the first lug paper tinsels, are electrically connected and each first lug paper tinsel is electrically connected on the first collector of corresponding first pole piece; The first lug, arranges and is electrically connected on one of them of described a plurality of the first pole pieces; A plurality of the second pole pieces, each second pole piece has the second collector, is formed at the secondary diaphragm that contains the second active material on the second collector positive and negative; A plurality of the second lug paper tinsels, are electrically connected and each second lug paper tinsel is electrically connected on the second collector of corresponding second pole piece; The second lug, arranges and is electrically connected on one of them of described a plurality of the second pole pieces; Barrier film, is arranged between described a plurality of the first pole piece and described a plurality of the second pole piece; And protection glue.Wherein, the first pole piece being electrically connected to the first lug and the second pole piece being electrically connected to the second lug are set to adjacent.The first lug has: the first insulator; Two the first weld parts, are arranged at the first insulator and are spaced from each other; And the first external portion, be arranged at the first insulator and be electrically connected on described two the first weld parts.The first pole piece being electrically connected to the first lug has: two the first welding grooves, by making the primary diaphragm of this first pole piece expose the first collector, form, two the first weld parts of accommodating the first lug respectively, described two the first weld parts respectively with described two the first welding grooves in the first collector welding; The first holding tank, towards the second pole piece setting being electrically connected to the second lug and spaced apart with two the first welding grooves.The second lug has: the second insulator; Two the second weld parts, are arranged at the second insulator and are spaced from each other; And the second external portion, be arranged at the second insulator and be electrically connected on described two the second weld parts.The second pole piece being electrically connected to the second lug has: two the second welding grooves, by making the secondary diaphragm of this second pole piece expose the second collector, form, two the second weld parts of accommodating the second lug of difference, described two the second weld parts respectively with described two the second welding grooves in the second collector welding, and the second weld part towards the first pole piece being electrically connected to the first lug in described two the second weld parts is partly contained in the first holding tank by barrier film insulation blocking ground; And second holding tank; towards the first pole piece setting being electrically connected to the first lug and spaced apart with described two the second welding grooves, the first weld part towards the second pole piece being electrically connected to the second lug in described two the first weld parts is contained in the second holding tank by barrier film insulation blocking ground part.Described protection glue is coated on respectively in two the first welding grooves, two the second welding grooves, to cover the welding position of the first weld part of corresponding the first lug and the welding position of the second weld part of the second lug.
To achieve these goals, in second aspect, the utility model provides a kind of lithium ion battery, and it comprises: according to the lamination type electric core described in the utility model first aspect; Electrolyte; And packaging bag, encapsulation lamination type electric core also holds electrolyte so that electrolyte infiltrates a plurality of the first pole pieces and a plurality of second pole piece of lamination type electric core.
The beneficial effects of the utility model are as follows:
Lamination type electric core of the present utility model is provided for welding the first welding groove of the first lug and the first holding tank of holding portion the second lug on the first pole piece, and on the second pole piece, be provided for accordingly welding the second welding groove of the second lug and the second holding tank of holding portion the first lug, and described protection glue is coated on respectively in two the first welding grooves, two the second welding grooves, thus, the waste of the battery core inner space that minimizing soldering polar ear causes, the reliability of tab welding is higher, and has improved the energy density of battery core; Improve the flexibility of lug design simultaneously, can be arranged on any position of battery core surrounding.
The first pole piece being electrically connected to the first lug can make thus lug concordant with packaging bag encapsulation limit near the pitted surface that do not rush of packaging bag when being arranged at outermost layer, and near not rushing pitted surface, thereby battery core is mated with packaging bag is intact.
Accompanying drawing explanation
Fig. 1 is according to the exploded perspective view of the associated components of lamination type electric core of the present utility model;
Fig. 2 is the stereogram that the part associated components of Fig. 1 is combined;
Fig. 3 is the stereogram according to lamination type electric core of the present utility model, but for the sake of clarity, has omitted barrier film;
Fig. 4 is according to the stereogram of lamination type electric core of the present utility model and lithium ion battery, wherein, and packaging bag shown in broken lines, but for the sake of clarity, omitted barrier film;
Fig. 5 is according to the stereogram of an embodiment of the first pole piece of lamination type electric core of the present utility model and the first lug paper tinsel, wherein for clarity sake, and first welding groove shown in broken lines;
Fig. 6 is according to the stereogram of an embodiment of the first pole piece of lamination type electric core of the present utility model and the first lug paper tinsel, wherein for clarity sake, and first welding groove shown in broken lines;
Fig. 7 is according to the stereogram of an embodiment of the first pole piece of lamination type electric core of the present utility model and the first lug paper tinsel, wherein for clarity sake, and first welding groove shown in broken lines;
Fig. 8 is according to the stereogram of an embodiment of the first pole piece of lamination type electric core of the present utility model and the first lug paper tinsel, wherein for clarity sake, and first welding groove shown in broken lines;
Fig. 9 is according to the stereogram of an embodiment of the first pole piece of lamination type electric core of the present utility model and the first lug paper tinsel, wherein for clarity sake, and first welding groove shown in broken lines;
Figure 10 is according to the stereogram of an embodiment of the first pole piece of lamination type electric core of the present utility model and the first lug paper tinsel, wherein for clarity sake, and second welding groove shown in broken lines and the second holding tank;
Figure 11 is according to the stereogram of an embodiment of the second pole piece of lamination type electric core of the present utility model and the second lug paper tinsel, wherein for clarity sake, and second welding groove shown in broken lines and the second holding tank;
Figure 12 is according to the stereogram of an embodiment of the second pole piece of lamination type electric core of the present utility model and the second lug paper tinsel, wherein for clarity sake, and second welding groove shown in broken lines and the second holding tank;
Figure 13 is according to the stereogram of an embodiment of the second pole piece of lamination type electric core of the present utility model and the second lug paper tinsel, wherein for clarity sake, and second welding groove shown in broken lines and the second holding tank;
Figure 14 is according to the stereogram of an embodiment of the second pole piece of lamination type electric core of the present utility model and the second lug paper tinsel, wherein for clarity sake, and second welding groove shown in broken lines and the second holding tank;
Wherein, description of reference numerals is as follows:
1 lamination type electric core 141 second collectors
11 first pole piece 142 secondary diaphragms
111 first collector 143 second welding grooves
112 primary diaphragm 144 second holding tanks
113 first welding groove 15 second lug paper tinsels
114 first holding tank 16 second lugs
12 first lug paper tinsel 161 second insulators
13 first lug 162 second weld parts
131 first insulator 163 second external portions
132 first weld part 17 barrier films
2 packaging bags of 133 first external portions
14 second pole pieces 21 do not rush pitted surface
Embodiment
Describe in detail with reference to the accompanying drawings according to lamination type electric core of the present utility model and lithium ion battery.
First illustrate according to the lamination type electric core of the utility model first aspect.
Referring to figs. 1 through Figure 14, according to lamination type electric core 1 of the present utility model, comprise: a plurality of the first pole pieces 11, each first pole piece 11 has the first collector 111, is formed at the primary diaphragm that contains the first active material 112 on the first collector 111 positive and negatives; A plurality of the first lug paper tinsels 12, are electrically connected and each first lug paper tinsel 12 is electrically connected on the first collector 111 of corresponding first pole piece 11; The first lug 13, arranges and is electrically connected on one of them of described a plurality of the first pole pieces 11; A plurality of the second pole pieces 14, each second pole piece 14 has the second collector 141, is formed at the secondary diaphragm that contains the second active material 142 on the second collector 141 positive and negatives; A plurality of the second lug paper tinsels 15, are electrically connected and each second lug paper tinsel 15 is electrically connected on the second collector 141 of corresponding second pole piece 14; The second lug 16, arranges and is electrically connected on one of them of described a plurality of the second pole pieces 14; Barrier film 17, is arranged between described a plurality of the first pole piece 11 and described a plurality of the second pole piece 14; And protection glue (not shown).Wherein, the first pole piece 11 being electrically connected to the first lug 13 and the second pole piece 14 being electrically connected to the second lug 16 are set to adjacent.The first lug 13 has: the first insulator 131; Two the first weld parts 132, are arranged at the first insulator 131 and are spaced from each other; And the first external portion 133, be arranged at the first insulator 131 and be electrically connected on described two the first weld parts 132.The first pole piece 11 being electrically connected to the first lug 13 has: two the first welding grooves 113, by making the primary diaphragm 112 of this first pole piece 11 expose the first collector 111, form, two the first weld parts 132 of accommodating the first lug 13 respectively, described two the first weld parts 132 respectively with described two the first welding grooves 113 in the first collector 111 welding; The first holding tank 114, towards the second pole piece 14 settings and spaced apart with two the first welding grooves 113 that are electrically connected to the second lug 16.The second lug 16 has: the second insulator 161; Two the second weld parts 162, are arranged at the second insulator 161 and are spaced from each other; And the second external portion 163, be arranged at the second insulator 161 and be electrically connected on described two the second weld parts 162.The second pole piece 14 being electrically connected to the second lug 16 has: two the second welding grooves 143, by making the secondary diaphragm 142 of this second pole piece 14 expose the second collector 141, form, two the second weld parts 162 of accommodating the second lug 16 of difference, described two the second weld parts 162 respectively with described two the second welding grooves 143 in the second collector 141 welding, and the second weld part 162 towards the first pole piece 11 being electrically connected to the first lug 13 in described two the second weld parts 162 is partly contained in the first holding tank 114 by barrier film 17 insulation blockings ground; And second holding tank 144; towards the first pole piece 11 settings and spaced apart with described two the second welding grooves 143 that are electrically connected to the first lug 13, the first weld part 132 towards the second pole piece 14 being electrically connected to the second lug 16 in described two the first weld parts 132 is contained in the second holding tank 144 by barrier film 17 insulation blockings ground parts.Described protection glue is coated on respectively in two the first welding grooves 113, two the second welding grooves 143, to cover the welding position of the first weld part 132 of corresponding the first lug 13 and the welding position of the second weld part 162 of the second lug 16.
Lamination type electric core 1 of the present utility model is provided for welding the first welding groove 113 of the first lug 13 and the first holding tank 114 of holding portion the second lug 16 on the first pole piece 11, and on the second pole piece 14, be provided for accordingly welding the second welding groove 143 of the second lug 16 and the second holding tank 144 of holding portion the first lug 13, and described protection glue is coated on respectively two the first welding grooves 113, in two the second welding grooves 143, thus, the waste of the battery core inner space that minimizing soldering polar ear causes, the reliability of tab welding is higher, and improved the energy density of battery core, improve the flexibility of lug design simultaneously, can be arranged on any position of battery core surrounding.
According in an embodiment of lamination type electric core 1 of the present utility model, the first pole piece 11 being electrically connected to the first lug 13 is arranged on outermost layer.
According in an embodiment of lamination type electric core 1 of the present utility model, the first pole piece 11 can be negative plate, and the second pole piece 14 can be positive plate.In another embodiment, the first pole piece 11 can be anode pole piece, and the second pole piece 12 can be cathode pole piece.Correspondingly, can select suitable first active material corresponding with polarity pole piece and the second active material.
According in an embodiment of lamination type electric core 1 of the present utility model, with reference to Fig. 2 and in conjunction with Fig. 1, Fig. 3 and Fig. 4, the first insulator 131 of the first lug 13 covers described two the first welding grooves 113 and the second holding tank 144; The second insulator 161 of the second lug 16 covers described two the second welding grooves 143 and the first holding tank 114.
According in an embodiment of lamination type electric core 1 of the present utility model, with reference to Fig. 3 and Fig. 4, the first insulator 131 of the first lug 13 flushes with the second insulator 161 outer edge of the second lug 16.
According in an embodiment of lamination type electric core 1 of the present utility model, be contained in the thickness sum that the first welding groove 113 of correspondence and the thickness of the first weld part 132 in the second holding tank 144 are less than or equal to primary diaphragm 112 and the secondary diaphragm 142 of corresponding position; The thickness that is contained in the second corresponding welding groove 143 and the second weld part 162 in the first holding tank 114 is less than or equal to the thickness sum of secondary diaphragm 142 and the primary diaphragm 112 of corresponding position.
According in an embodiment of lamination type electric core 1 of the present utility model, see figures.1.and.2, region that the second holding tank 144 edges surround covers the region that the edge of first welding groove 113 relative with the second holding tank 144 surrounds; Region that the second welding groove 143 edges surround covers the region that the edge of first holding tank 114 relative with the second welding groove 143 surrounds.
According in an embodiment of lamination type electric core 1 of the present utility model, with reference to Fig. 5 to Figure 14, each first welding groove 113 can be the groove (with reference to right side in left side and Fig. 9 in left and right sides, Fig. 8 in left side, Fig. 7 in left and right sides, Fig. 6 in Fig. 5) of bottom side sealing or the groove (with reference to left side in right side and Fig. 9 in right side, Fig. 8 in Fig. 6) of up/down perforation; Each second welding groove 143 can be the groove (with reference to left side in right side and Figure 14 in right side, Figure 13 in left and right sides, Figure 12 in left and right sides, Figure 11 in Figure 10) of bottom side sealing or the groove (with reference to right side in left side and Figure 14 in left side, Figure 13 in Figure 12) of up/down perforation; The first holding tank 114 is the groove (with reference to Fig. 5, Fig. 6 and Fig. 9) of bottom side sealing or the groove (with reference to Fig. 7 and Fig. 8) of up/down perforation; The second holding tank 144 is the groove (with reference to Figure 10, Figure 12 and Figure 14) of bottom side sealing or the groove (with reference to Figure 11 and Figure 13) of up/down perforation.
According in an embodiment of lamination type electric core 1 of the present utility model, with reference to Fig. 3 and Fig. 4 and in conjunction with Fig. 1 and Fig. 2, described a plurality of the first lug paper tinsels 12 are in alignment with each other; Described a plurality of the second lug paper tinsel 15 is in alignment with each other.
According in an embodiment of lamination type electric core 1 of the present utility model, with reference to Fig. 3 and Fig. 4, described a plurality of the first lug paper tinsels 12 are electrically connected to by bent jointing; Described a plurality of the second lug paper tinsel 15 is electrically connected to by bent jointing.In another embodiment, with reference to Fig. 3 and Fig. 4, the first lug paper tinsel 12 bending 45-90 degree.The second lug paper tinsel 15 bending 45-90 degree.It should be noted that in Fig. 3 and Fig. 4, outermost the first lug paper tinsel 12 and the second not bending of lug paper tinsel 15 being adjacent, because its size shorter (seeing figures.1.and.2), without bending, the bending of the first lug paper tinsel 12 and the second lug paper tinsel 15 can change according to different need of productions, as long as guarantee not exceed in the size situation of lamination type electric core 1, a plurality of the first lug paper tinsels 12 and a plurality of the second lug paper tinsel 15 are electrically connected by bent jointing respectively.
According in an embodiment of lamination type electric core 1 of the present utility model, with reference to Fig. 1, barrier film 17 can be monolithic form.In another embodiment, barrier film 17 is for being folded in the full wafer between the first pole piece 11 and the second pole piece 14.
According in an embodiment of lamination type electric core 1 of the present utility model, protect glue to can be green glue.
According to battery core described in the utility model, can be the battery core of battery or the battery core of capacitor.Battery can for but be not limited to lithium ion battery, capacitor can for but be not limited to lithium ion super capacitor.
The following describes according to the lithium ion battery of the utility model second aspect.
According to the lithium ion battery of the utility model second aspect, comprise: according to the lamination type electric core 1 described in the utility model first aspect; Electrolyte (not shown); And packaging bag 2, encapsulation lamination type electric core 1 also holds electrolyte so that electrolyte infiltrates a plurality of the first pole pieces 11 and a plurality of second pole piece 14 of lamination type electric core 1.
According in an embodiment of lithium ion battery of the present utility model, with reference to Fig. 4, the first pole piece 11 being electrically connected to the first lug 13 is arranged on outermost layer and does not rush pitted surface 21 near packaging bag 2.Can make thus lug concordant with packaging bag encapsulation limit, near not rushing pitted surface 21, thereby battery core is mated with packaging bag is intact.
Claims (10)
1. a lamination type electric core (1), comprising:
A plurality of the first pole pieces (11), each first pole piece (11) has the first collector (111), is formed at the primary diaphragm that contains the first active material (112) on the first collector (111) positive and negative;
A plurality of the first lug paper tinsels (12), are electrically connected and each first lug paper tinsel (12) is electrically connected on first collector (111) of corresponding first pole piece (11);
The first lug (13), arranges and is electrically connected on one of them of described a plurality of the first pole pieces (11);
A plurality of the second pole pieces (14), each second pole piece (14) has the second collector (141), is formed at the secondary diaphragm that contains the second active material (142) on the second collector (141) positive and negative;
A plurality of the second lug paper tinsels (15), are electrically connected and each second lug paper tinsel (15) is electrically connected on second collector (141) of corresponding second pole piece (14);
The second lug (16), arranges and is electrically connected on one of them of described a plurality of the second pole pieces (14); And
Barrier film (17), is arranged between described a plurality of the first pole pieces (11) and described a plurality of the second pole pieces (14);
It is characterized in that,
The first pole piece (11) being electrically connected to the first lug (13) and the second pole piece (14) being electrically connected to the second lug (16) are set to adjacent;
The first lug (13) has:
The first insulator (131);
Two the first weld parts (132), are arranged at the first insulator (131) and are spaced from each other; And
The first external portion (133), is arranged at the first insulator (131) and is electrically connected on described two the first weld parts (132);
The first pole piece (11) being electrically connected to the first lug (13) has:
Two the first welding grooves (113), by making the primary diaphragm (112) of this first pole piece (11) expose the first collector (111), form, two first weld parts (132) of accommodating the first lug (13) respectively, described two the first weld parts (132) respectively with described two the first welding grooves (113) in the first collector (111) welding;
The first holding tank (114), towards the second pole piece (14) setting being electrically connected to the second lug (16) and spaced apart with two the first welding grooves (113);
The second lug (16) has:
The second insulator (161);
Two the second weld parts (162), are arranged at the second insulator (161) and are spaced from each other; And
The second external portion (163), is arranged at the second insulator (161) and is electrically connected on described two the second weld parts (162);
The second pole piece (14) being electrically connected to the second lug (16) has:
Two the second welding grooves (143), by making the secondary diaphragm (142) of this second pole piece (14) expose the second collector (141), form, two second weld parts (162) of accommodating the second lug of difference (16), described two the second weld parts (162) respectively with described two the second welding grooves (143) in the second collector (141) welding, and the second weld part (162) towards the first pole piece (11) being electrically connected to the first lug (13) in described two the second weld parts (162) is contained in the first holding tank (114) by barrier film (17) insulation blocking ground part, and
The second holding tank (144), towards the first pole piece (11) setting being electrically connected to the first lug (13) and spaced apart with described two the second welding grooves (143), the first weld part (132) towards the second pole piece (14) being electrically connected to the second lug (16) in described two the first weld parts (132) is contained in the second holding tank (144) by barrier film (17) insulation blocking ground part;
Described lamination type electric core (1) also comprises:
Protection glue; be coated on respectively in two the first welding grooves (113), two the second welding grooves (143), to cover the welding position of the first weld part (132) of corresponding the first lug (13) and the welding position of second weld part (162) of the second lug (16).
2. lamination type electric core according to claim 1 (1), is characterized in that, the first pole piece (11) being electrically connected to the first lug (13) is arranged on outermost layer.
3. lamination type electric core according to claim 1 (1), is characterized in that, the first pole piece (11) is negative plate, and the second pole piece (14) is positive plate.
4. lamination type electric core according to claim 1 (1), is characterized in that,
First insulator (131) of the first lug (13) covers described two the first welding grooves (113) and the second holding tank (144);
Second insulator (161) of the second lug (16) covers described two the second welding grooves (143) and the first holding tank (114).
5. lamination type electric core according to claim 1 (1), is characterized in that,
First insulator (131) of the first lug (13) flushes with the first insulator (161) outer edge of the first lug (16).
6. lamination type electric core according to claim 1 (1), is characterized in that,
The thickness that is contained in corresponding the first welding groove (113) and the first weld part (132) in the second holding tank (144) is less than or equal to the thickness sum of primary diaphragm (112) and the secondary diaphragm (142) of corresponding position;
The thickness that is contained in corresponding the second welding groove (143) and the second weld part (162) in the first holding tank (114) is less than or equal to the thickness sum of secondary diaphragm (142) and the primary diaphragm (112) of corresponding position.
7. lamination type electric core according to claim 3 (1), is characterized in that,
Region that the second holding tank (144) edge surrounds covers the region that the edge of first welding groove (113) relative with the second holding tank (144) surrounds;
Region that the second welding groove (143) edge surrounds covers the region that the edge of first holding tank (114) relative with the second welding groove (143) surrounds.
8. lamination type electric core according to claim 1 (1), is characterized in that,
Each first welding groove (113) is the groove of bottom side sealing or the groove of up/down perforation;
Each second welding groove (143) is the groove of bottom side sealing or the groove of up/down perforation;
The first holding tank (114) is the groove of bottom side sealing or the groove of up/down perforation;
The second holding tank (144) is the groove of bottom side sealing or the groove of up/down perforation.
9. a lithium ion battery, is characterized in that, comprising:
According to the lamination type electric core (1) described in any one in claim 1-8;
Electrolyte; And
Packaging bag (2), encapsulation lamination type electric core (1) also holds electrolyte so that electrolyte infiltrates a plurality of the first pole pieces (11) and a plurality of second pole piece (14) of lamination type electric core (1).
10. lithium ion battery according to claim 9, is characterized in that;
The first pole piece (11) being electrically connected to the first lug (13) is arranged on outermost layer and does not rush pitted surface (21) near packaging bag (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320746558.5U CN203574050U (en) | 2013-11-21 | 2013-11-21 | Strap-type battery cell and lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320746558.5U CN203574050U (en) | 2013-11-21 | 2013-11-21 | Strap-type battery cell and lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203574050U true CN203574050U (en) | 2014-04-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320746558.5U Expired - Lifetime CN203574050U (en) | 2013-11-21 | 2013-11-21 | Strap-type battery cell and lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203574050U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017035749A1 (en) * | 2015-08-31 | 2017-03-09 | 宁德新能源科技有限公司 | Secondary battery cell and winding formation system thereof |
| CN109596982A (en) * | 2017-09-28 | 2019-04-09 | 宁德时代新能源科技股份有限公司 | battery detection structure |
| US11923498B2 (en) | 2014-01-17 | 2024-03-05 | Ningde Amperex Technology Limited | Lithium-ion battery having desirable safety performance |
-
2013
- 2013-11-21 CN CN201320746558.5U patent/CN203574050U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11923498B2 (en) | 2014-01-17 | 2024-03-05 | Ningde Amperex Technology Limited | Lithium-ion battery having desirable safety performance |
| WO2017035749A1 (en) * | 2015-08-31 | 2017-03-09 | 宁德新能源科技有限公司 | Secondary battery cell and winding formation system thereof |
| CN108352492A (en) * | 2015-08-31 | 2018-07-31 | 宁德新能源科技有限公司 | Secondary cell battery core and its coiling and molding system |
| CN108352492B (en) * | 2015-08-31 | 2021-08-31 | 宁德新能源科技有限公司 | Secondary battery core |
| US11329352B2 (en) | 2015-08-31 | 2022-05-10 | Ningde Amperex Technology Limited | Secondary battery cell and winding formation system thereof |
| CN109596982A (en) * | 2017-09-28 | 2019-04-09 | 宁德时代新能源科技股份有限公司 | battery detection structure |
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