CN101931101A - Lithium-ion power battery and manufacturing method thereof - Google Patents
Lithium-ion power battery and manufacturing method thereof Download PDFInfo
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- CN101931101A CN101931101A CN2009101495068A CN200910149506A CN101931101A CN 101931101 A CN101931101 A CN 101931101A CN 2009101495068 A CN2009101495068 A CN 2009101495068A CN 200910149506 A CN200910149506 A CN 200910149506A CN 101931101 A CN101931101 A CN 101931101A
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The invention provides a lithium-ion power battery and a manufacturing method thereof. The battery comprises a shell, a battery cell and a cover plate device, wherein the battery cell is arranged in the shell and is provided with cathode and anode tabs; the cover plate device is connected with the opening of the shell, seals the battery cell in the shell and is provided with cathode and anode terminals; the cathode tab is electrically connected with the cathode terminal; the anode tab is electrically connected with the anode terminal; and the cathode tab and the anode tab respectively extend out of the two ends of the battery cell. The lithium-ion power battery and the manufacturing method thereof can reduce the risks of short circuits of the cathode and anode tabs.
Description
Technical field
The present invention relates to technical field of lithium ion, particularly a kind of lithium-ion-power cell and manufacture method thereof.
Background technology
Lithium ion battery is a kind of novel battery of succeeding in developing in 20th century, because of it has the specific energy height, advantages such as memory effect, environmental protection are stablized, do not had to discharge voltage, be widely used in the military and civilian compact electric apparatus in recent years, as mobile phone, portable computer, video camera, camera etc., to replace conventional batteries.At present, capacity is used in electric bicycle, electric bicycle, ups power and portable power tool greater than the lithium-ion-power cell of 3Ah, also be expected to one of major impetus power supply that becomes by the 21 century electric automobile, and having broad prospects aspect artificial satellite, Aero-Space and the energy storage.
Fig. 1 is a kind of structural representation of lithium-ion-power cell, wherein, battery 2 is positioned at the inside of battery container 5, and the positive pole ear 1 of battery 2 and negative lug 4 electrically connect with the anode and cathode terminals 6 that is arranged at housing 5 surfaces, can carry out charge or discharge by described anode and cathode terminals 6 batteries.
Usually, the battery both positive and negative polarity lug of lithium-ion-power cell all is to draw (see figure 1) from the same direction of battery, and is connected to the anode and cathode terminals on battery container surface.Yet problem is that because the inner space of battery container is less, the spacing between the both positive and negative polarity lug is very little, and both positive and negative polarity lug short risk is arranged when running into external vibration.And the unique path of lug battery current, all lugs all concentrate on battery one end, are unfavorable for the heat radiation of lug, cause the heat distribution of entire cell inhomogeneous.
Summary of the invention
The purpose of this invention is to provide a kind of lithium-ion-power cell and manufacture method thereof, can reduce both positive and negative polarity lug short risk.
For addressing the above problem, the invention provides a kind of lithium-ion-power cell, comprising:
Housing;
Battery is positioned at described enclosure interior;
Cover board arrangement is connected with the opening of described housing, and described battery is sealed in the housing;
Wherein said cover board arrangement has anode and cathode terminals, described battery has the both positive and negative polarity lug, and described positive pole ear and described positive terminal electrically connect, and described negative lug and described negative terminal electrically connect, and described positive pole ear and negative lug are stretched out by the two ends of battery respectively.
Described battery comprises at least one height electricity core, and each sub electric core all has anodal sub-lug and the sub-lug of negative pole, and described each anodal sub-lug composes in parallel described positive pole ear, and the sub-lug of described each negative pole composes in parallel described negative lug.
The volume core of the electric core of described son for adopting winding process to make perhaps, is the laminated cores that adopts lamination technology to make.
Described housing is made by electric conducting material, and the anodal sub-lug of described each sub electric core and the sub-lug of negative pole are stretched out by the two ends of the electric core of son respectively, and described each anodal sub-lug or the sub-lug of negative pole are fixedlyed connected with described inner walls respectively.
Described positive terminal or negative terminal are double-screw bolt, and described double-screw bolt comprises threaded portion and the extension stem vertical with described threaded portion, and wherein, described extension stem is fixedlyed connected with described cover plate.
Described double-screw bolt has at least two described extension stems, also comprises at least two rivets, and riveted joint realizes described fixedlying connected with cover plate with each extension stem by described rivet.
Described positive pole ear and described positive terminal electrically connect by described extension stem fixedlys connected realization with described positive pole ear, described negative lug and described negative terminal electric connection are fixedlyed connected realization by described extension stem with described negative lug.
Accordingly, also provide a kind of manufacture method of lithium-ion-power cell, may further comprise the steps:
One end of positive pole ear is connected with anode pole piece, and the other end stretches out the edge of anode pole piece, and, an end of negative lug is connected with cathode pole piece, the other end stretches out the edge of cathode pole piece;
Utilize anode pole piece, cathode pole piece and barrier film to form battery, and the external part of the external part of maintenance positive pole ear and negative lug lay respectively at the two ends of battery;
The external part of described positive pole ear and the external part of negative lug are connected with negative terminal with the positive terminal of battery respectively.
Described anode pole piece, cathode pole piece and the barrier film formation battery utilized can adopt winding process or lamination process.
Described anode pole piece, cathode pole piece and the barrier film formation battery utilized comprises:
Be separated by anode pole piece, barrier film and cathode pole piece stacked successively and center on volume pin coiling and form the volume core;
The parallel connection of a plurality of described volume cores can be formed battery.
Compared with prior art, technique scheme has the following advantages:
Described lithium-ion-power cell and manufacture method thereof, the positive pole ear and the negative lug of the enclosure interior battery of battery are stretched out by the two ends of battery respectively, and described have an anode and cathode terminals, positive terminal on described positive pole ear and the cover board arrangement electrically connects, negative terminal on described negative lug and the cover board arrangement electrically connects, so, the positive pole ear of battery and negative lug are by the two-way enclosure interior of drawing, all lugs distribute at the two ends of enclosure interior, increase the spacing between the both positive and negative polarity lug, can effectively reduce the lug short risk.
In addition, because lug is evenly distributed in battery container inside, and is connected with the anode and cathode terminals of cover board arrangement, the lug electric current up/down perforation of flowing through makes that the heat radiation of entire cell is even, has reduced the problem of local pyrexia in the housing.
Description of drawings
Shown in accompanying drawing, above-mentioned and other purpose, feature and advantage of the present invention will be more clear.Reference numeral identical in whole accompanying drawings is indicated identical part.Painstakingly do not draw accompanying drawing, focus on illustrating purport of the present invention by actual size equal proportion convergent-divergent.
Fig. 1 is a kind of structural representation of lithium-ion-power cell;
Fig. 2 is the three-dimensional structure diagram of lithium-ion-power cell among the embodiment one;
Fig. 3 is the structural representation of battery among Fig. 2;
Fig. 4 is the partial sectional view of Fig. 2 cover plate device;
Fig. 5 is the flow chart of lithium-ion-power cell manufacture method among the embodiment two.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing.
Set forth a lot of details in the following description so that fully understand the present invention, implement but the present invention can also adopt other to be different from alternate manner described here, so the present invention has not been subjected to the restriction of following public specific embodiment.
Secondly, the present invention is described in detail in conjunction with schematic diagram, when the embodiment of the invention is described in detail in detail; for ease of explanation; the profile of indication device structure can be disobeyed general ratio and be done local the amplification, and described schematic diagram is example, and it should not limit the scope of protection of the invention at this.The three dimensions size that in actual fabrication, should comprise in addition, length, width and the degree of depth.
Be outstanding characteristics of the present invention, do not provide in the accompanying drawing and the inevitable directly related part of inventive point of the present invention that rubber cushion for example insulate.
The phenomenon that internal short-circuit causes battery to burn scrapping often takes place in traditional lithium-ion-power cell, the present inventor discovers, the essential reason of the problems referred to above is, the both positive and negative polarity lug of battery all is arranged at the same end near cover plate in the battery container, and spacing is narrow and small, the short circuit of both positive and negative polarity lug might take place when running into external vibration, causes battery to burn.
Based on this, technical scheme of the present invention provides a kind of lithium-ion-power cell and manufacture method thereof, adopts the two-way structure of drawing and being connected with the anode and cathode terminals of cover plate up and down respectively of both positive and negative polarity lug, the even distribution of realization lug.
Describe a kind of embodiment of described lithium-ion-power cell in detail below in conjunction with accompanying drawing.
Embodiment one
Fig. 2 is the three-dimensional structure diagram of lithium-ion-power cell described in the present embodiment, and Fig. 3 is the structural representation of battery among Fig. 2, and Fig. 4 is the partial sectional view of Fig. 2 cover plate device.
Described lithium-ion-power cell specifically comprises:
Wherein, described cover board arrangement 14 comprises: cover plate 11 and double-screw bolt 12, described double-screw bolt 12 comprise threaded portion 121 and the extension stem (not shown) vertical with described threaded portion 121, and wherein, described extension stem is fixedlyed connected with described cover plate 11 by rivet 15.
A described cover board arrangement 14 is respectively arranged in the upper and lower end face of described cylinder bodily form housing 10, the double-screw bolt 12 of two cover board arrangements 14 is respectively as the anode and cathode terminals of battery up and down, can be connected with external circuit by described anode and cathode terminals, battery is carried out charge or discharge.
As shown in Figure 3, the tubular volume core of each height electricity core 131 (being example only among the figure) for making of battery 13 by winding process with three.Described volume core 131 has two-way anodal sub-lug 131a that draws and the sub-lug 131b of negative pole, also be, sub-lug 131a of described positive pole and the sub-lug 131b of negative pole are stretched out by two end faces of cylinder bodily form volume core 131 respectively, the end of sub-lug 131a or 131b is imbedded volume core 131 inside, and the (not shown) that links to each other with the negative or positive electrode pole piece, the other end stretches out two end faces of volume core 131 respectively.
The anodal sub-lug 131a of described each volume core 131 positive pole ear 13a that constitutes battery 13 in parallel, the sub-lug 131b of the negative pole negative lug 13b that constitutes battery 13 in parallel of each volume core 131, then corresponding, described positive pole ear 13a and negative lug 13b lay respectively at the two ends of battery 13; Described positive pole ear 13a is fixedlyed connected with the double-screw bolt 12 of upper and lower covers panel assembly 14 respectively with negative lug 13b.Certainly, described battery 13 also can only be a volume core, and the positive pole ear of this volume core and negative lug are stretched out by volume core two ends respectively, and directly respectively links to each other with the double-screw bolt of cover plate up and down, does not repeat them here.
In the described lithium-ion-power cell, the positive pole ear of enclosure interior battery and negative lug are stretched out by the two ends of battery respectively, and described have an anode and cathode terminals, positive terminal on described positive pole ear and the cover board arrangement electrically connects, negative terminal on described negative lug and the cover board arrangement electrically connects, so, the positive pole ear of battery and negative lug are by the two-way enclosure interior of drawing, all lugs distribute at the two ends of enclosure interior, increase the spacing between the both positive and negative polarity lug, can effectively reduce the lug short risk.
In addition, because lug is evenly distributed in battery container inside, and is connected with the anode and cathode terminals of cover board arrangement, the lug electric current up/down perforation of flowing through makes that the heat radiation of entire cell is even, has reduced the problem of local pyrexia in the housing.
Concrete, as shown in Figure 4, described cover board arrangement 14 comprises: cover plate 11, and described cover plate 11 is a circular slab; Double-screw bolt 12 above the cover plate 11, described double-screw bolt 12 comprise threaded portion 121 and the extension stem 122 vertical with described threaded portion 121; Wherein, described extension stem 122 is fixedlyed connected with described cover plate 11.In the present embodiment, the double-screw bolt 12 of battery cover plate device has two described extension stems 122, they form " L " font with described threaded portion respectively, in addition, battery cover plate device also comprises two rivets 15 corresponding to a double-screw bolt, 11 riveted joints realize described fixedlying connected with cover plate with two extension stems 122 by described rivet 15, so double-screw bolt 12 is fixed on the cover board.And described threaded portion 121 and extension stem 122 all are positioned at the same side of cover plate 11.
Described cover plate 11 can also can be insulating material for electric conducting material, and when cover plate 11 was electric conducting material, battery cover plate device also comprised rubber cushion, is clipped between described extension stem 122 and the cover plate 11, plays isolated insulation and the effect at the place that is tightly connected.Described double-screw bolt 12 adopts conductive metallic material to make, and as the electrode terminal of described battery cover plate device, at this moment, also comprises the nut 16 that is connected with described double-screw bolt 12.
As shown in Figure 2, described positive pole ear 13a or negative lug 13b are fixedlyed connected with double-screw bolt 12 can be lug and 122 riveted joints of described extension stem, by lug 13b is welded in sheet metal 17, sheet metal 17 is realized with extension stem 122 riveted joints in the present embodiment again.
In addition, in other embodiments of the invention, the anodal sub-lug positive pole ear that constitutes battery in parallel of each volume core of battery, the sub-lug of the negative pole negative lug that constitutes battery in parallel of each volume core, described positive pole ear and a double-screw bolt electrically connect, the welding of described negative lug and housing and housing and the electric connection of another double-screw bolt by conduction, described two double-screw bolts are respectively as the positive terminal and the negative terminal of this electrokinetic cell.
In addition, described positive terminal and negative terminal can lay respectively on two cover board arrangements up and down of battery, also can all be positioned on the same cover board arrangement.
Describe the embodiment of the manufacture method of lithium-ion-power cell provided by the invention in detail below in conjunction with accompanying drawing.
Embodiment two
Fig. 5 is the flow chart of lithium-ion-power cell manufacture method described in the present embodiment, and described manufacture method may further comprise the steps:
Step S1: an end of positive pole ear is connected with anode pole piece, and the other end stretches out the edge of anode pole piece as external part, and, an end of negative lug is connected with cathode pole piece, the other end stretches out the edge of cathode pole piece as external part; Wherein, described positive pole ear for example is an aluminium foil, and described negative lug for example is nickel or copper foil;
Step S2: utilize anode pole piece, cathode pole piece and barrier film to form battery, and the external part of the external part of maintenance positive pole ear and negative lug lays respectively at the two ends of battery;
Step S3: battery is put into battery container inside, and with the external part of the external part of described positive pole ear and negative lug respectively with battery cover plate device on positive terminal and negative terminal electrically connect; For example, described positive terminal and negative terminal are the double-screw bolt of cover plate up and down, and with the external part and the riveted joint of anodal double-screw bolt of positive pole ear, the external part of negative lug and negative pole double-screw bolt are riveted;
Step S4: the cover board arrangement of battery is connected with housing seal.
Step S5: battery is changed into processing, described change into handle refer to the battery initial charge and follow-up be 1～5 charge and discharge cycles that fully activation is carried out.
Wherein, utilizing anode pole piece, cathode pole piece and barrier film to form battery in the described step 2 specifically comprises:
Be separated by anode pole piece, barrier film and cathode pole piece stacked successively and center on volume pin coiling and form the volume core;
The parallel connection of a plurality of described volume cores is formed battery.
Above-mentioned formation battery adopts winding process, also can adopt lamination process in other embodiments of the invention, for example, earlier a plurality of anode pole pieces, cathode pole piece and barrier film are processed as the rectangle of specific dimensions, then with anode pole piece, barrier film and cathode pole piece in layer repeat successively the stack, after lamination is finished all negative or positive electrode lugs are welded, thus the battery that forms in parallel.
The lithium-ion-power cell that adopts described manufacture method to obtain can reduce the risk of internal short-circuit, and, in manufacture process,, avoided positive and negative sub-lug being cross-linked with each other in manufacture process of sub electric core, further reduced short-circuit risks because lug distributes and the two ends of battery.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction.
Though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention.Any those of ordinary skill in the art, do not breaking away under the technical solution of the present invention scope situation, all can utilize the method and the technology contents of above-mentioned announcement that technical solution of the present invention is made many possible changes and modification, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical solution of the present invention, all still belongs in the scope of technical solution of the present invention protection any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present invention.
Claims (10)
1. a lithium-ion-power cell is characterized in that, comprising:
Housing;
Battery is positioned at described enclosure interior;
Cover board arrangement is connected with the opening of described housing, and described battery is sealed in the described housing;
Wherein said cover board arrangement has anode and cathode terminals, described battery has the both positive and negative polarity lug, and described positive pole ear and described positive terminal electrically connect, and described negative lug and described negative terminal electrically connect, and described positive pole ear and negative lug are stretched out by the two ends of battery respectively.
2. lithium-ion-power cell according to claim 1, it is characterized in that, described battery comprises at least one height electricity core, each sub electric core all has anodal sub-lug and the sub-lug of negative pole, described each anodal sub-lug composes in parallel described positive pole ear, and the sub-lug of described each negative pole composes in parallel described negative lug.
3. lithium-ion-power cell according to claim 2 is characterized in that, the volume core of the electric core of described son for adopting winding process to make perhaps, is the laminated cores that adopts lamination technology to make.
4. lithium-ion-power cell according to claim 2, it is characterized in that, described housing is made by electric conducting material, the anodal sub-lug of described each sub electric core and the sub-lug of negative pole are stretched out by the two ends of the electric core of son respectively, and described each anodal sub-lug or the sub-lug of negative pole are fixedlyed connected with described inner walls respectively.
5. lithium-ion-power cell according to claim 1, it is characterized in that described positive terminal or negative terminal are double-screw bolt or rivet arrangement, described double-screw bolt comprises threaded portion and the extension stem vertical with described threaded portion, wherein, described extension stem is fixedlyed connected with described cover plate.
6. lithium-ion-power cell according to claim 5 is characterized in that, described double-screw bolt has at least two described extension stems, also comprises at least two rivets, and riveted joint realizes described fixedlying connected with cover plate with each extension stem by described rivet.
7. lithium-ion-power cell according to claim 5, it is characterized in that, described positive pole ear and described positive terminal electrically connect by described extension stem fixedlys connected realization with described positive pole ear, described negative lug and described negative terminal electric connection are fixedlyed connected realization by described extension stem with described negative lug.
8. the manufacture method of a lithium-ion-power cell is characterized in that, may further comprise the steps:
One end of positive pole ear is connected with anode pole piece, and the other end stretches out the edge of anode pole piece, and, an end of negative lug is connected with cathode pole piece, the other end stretches out the edge of cathode pole piece;
Utilize anode pole piece, cathode pole piece and barrier film to form battery, and the external part of the external part of maintenance positive pole ear and negative lug lay respectively at the two ends of battery;
The external part of described positive pole ear and the external part of negative lug are connected with negative terminal with the positive terminal of battery respectively.
9. the manufacture method of described lithium-ion-power cell according to Claim 8 is characterized in that, describedly utilizes anode pole piece, cathode pole piece and barrier film to form battery can to adopt winding process or lamination process.
10. the manufacture method of described lithium-ion-power cell according to Claim 8 is characterized in that, describedly utilizes anode pole piece, cathode pole piece and barrier film to form battery to comprise:
Be separated by anode pole piece, barrier film and cathode pole piece stacked successively and center on volume pin coiling and form the volume core;
The parallel connection of a plurality of described volume cores is formed battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101495068A CN101931101A (en) | 2009-06-25 | 2009-06-25 | Lithium-ion power battery and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101495068A CN101931101A (en) | 2009-06-25 | 2009-06-25 | Lithium-ion power battery and manufacturing method thereof |
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| CN101931101A true CN101931101A (en) | 2010-12-29 |
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| CN2009101495068A Pending CN101931101A (en) | 2009-06-25 | 2009-06-25 | Lithium-ion power battery and manufacturing method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102368541A (en) * | 2011-09-23 | 2012-03-07 | 上海万宏动力能源有限公司 | Cylindrical storage battery having improved current-collecting effect and manufacturing method |
| CN107342440A (en) * | 2017-06-26 | 2017-11-10 | 合肥国轩高科动力能源有限公司 | A kind of high-power lithium ion battery core and preparation method thereof |
| CN109616608A (en) * | 2018-12-14 | 2019-04-12 | 宁德新能源科技有限公司 | Battery, electronic equipment and battery pack |
| CN111403802A (en) * | 2020-04-30 | 2020-07-10 | 东莞新能德科技有限公司 | Battery and electric device with same |
-
2009
- 2009-06-25 CN CN2009101495068A patent/CN101931101A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102368541A (en) * | 2011-09-23 | 2012-03-07 | 上海万宏动力能源有限公司 | Cylindrical storage battery having improved current-collecting effect and manufacturing method |
| CN107342440A (en) * | 2017-06-26 | 2017-11-10 | 合肥国轩高科动力能源有限公司 | A kind of high-power lithium ion battery core and preparation method thereof |
| CN109616608A (en) * | 2018-12-14 | 2019-04-12 | 宁德新能源科技有限公司 | Battery, electronic equipment and battery pack |
| US11417914B2 (en) | 2018-12-14 | 2022-08-16 | Ningde Amperex Technology Limited | Battery, electronic device and battery pack |
| CN111403802A (en) * | 2020-04-30 | 2020-07-10 | 东莞新能德科技有限公司 | Battery and electric device with same |
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Application publication date: 20101229 |