CN106169540B - A kind of aluminum shell column lithium ion battery - Google Patents
A kind of aluminum shell column lithium ion battery Download PDFInfo
- Publication number
- CN106169540B CN106169540B CN201610671225.9A CN201610671225A CN106169540B CN 106169540 B CN106169540 B CN 106169540B CN 201610671225 A CN201610671225 A CN 201610671225A CN 106169540 B CN106169540 B CN 106169540B
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- CN
- China
- Prior art keywords
- lithium ion
- shell
- nut cap
- anode ear
- ion battery
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/102—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure
- H01M50/107—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
-
- 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
-
- 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
Abstract
The invention discloses a kind of aluminum shell column lithium ion batteries, including shell, nut cap and battery core, the battery core includes positive plate, negative electrode tab, anode ear, negative electrode lug and diaphragm, it is integrally placed in the seal cavity of shell and nut cap cooperation composition, described anode ear one end connects positive plate, the other end stretches out battery core, the seam crossing being welded between shell and nut cap.Anode ear extension end of the present invention is welded on the seam crossing between shell and nut cap, so that it may so that anode ear is far from negative electrode lug, it is ensured that they will not contact and short circuit occurs, and improve the security performance of lithium ion battery.
Description
Technical field
The present invention relates to a kind of lithium ion batteries, more particularly to one kind can be to avoid the aluminum shell column of positive and negative electrode ear short circuit
Lithium ion battery.
Background technique
It is investigated from structure, lithium ion battery is mainly made of shell, nut cap and battery core three parts, and wherein battery core is by anode
Piece, negative electrode tab and diaphragm stacking turn around to be formed, and electrolyte solution are also filled in shell, naturally it is also possible to be gelatinous polymerization
Object electrolyte.Lithium ion battery can be divided into several types such as steel shell, aluminum hull, nickel plating iron-clad and aluminum plastic film according to sheathing material difference
Type, wherein the negative electrode tab of aluminum shell column battery is welded by the negative terminal on negative electrode lug and nut cap, and negative electrode tab then passes through anode ear
With nut cap or case weld.
As CN2824317Y discloses battery case caused by a kind of cylindrical lithium ion battery with aluminum shell, including use aluminum hull system
Body and battery, the battery are placed in shell in rolled, and the positive pole ear of battery is welded in aluminum hull wall top or lid
On cap, the negative lug of battery is connected to the rivet in nut cap, a liquid injection hole is offered in the nut cap, a steel ball card is embedded in should
At liquid injection hole.
CN1917272A discloses a kind of cylindrical lithium ion battery with aluminum shell that weight ratio capacity is high, aluminum shell column of the present invention
Diaphragm is set among shape lithium ion battery, positive plate and negative electrode tab and is rolled into cylinder and is set in shell, the positive plate is
Positive electrode active material layer is arranged in plus plate current-collecting body two sides, and the negative electrode tab is that negative electrode active material is arranged in negative current collector two sides
Layer, described plus plate current-collecting body one end are bent to anode ear, and anode ear is fixedly connected with cap；Negative electrode lug and the fixed company of negative electrode tab
It connects, negative electrode tab is connect by negative electrode lug with negative terminal；The shell is aluminum hull.
As described above, the anode ear of aluminum shell column lithium ion battery is to weld with nut cap, and negative electrode lug is also and nut cap
The negative terminal at center welds, if cell diameter is smaller, will lead to that positive and negative tab is very close, has the hidden danger of short circuit.
Summary of the invention
The present invention provides a kind of aluminum shell column lithium ion batteries, solve the positive and negative tab of existing lithium ion battery and weld
It is connected to nut cap, spacing is small, has the problem of short-circuit hidden danger.
A kind of aluminum shell column lithium ion battery, including shell, nut cap and battery core, the battery core include positive plate, negative electrode tab,
Anode ear, negative electrode lug and diaphragm are integrally placed in the seal cavity of shell and nut cap cooperation composition, and described anode ear one end connects
Positive plate is connect, the other end stretches out battery core, the seam crossing being welded between shell and nut cap.
The positive plate has white edge, and the anode ear is formed by white edge cutting fold.The form of cutting and fold
Can be varied, as long as guaranteeing that anode ear has sufficient length to stretch out battery core.
The width of the anode ear is 2-3mm.It is almost the same with the width of traditional tab.
The collector of the positive plate is aluminium foil.Shell and the material of nut cap are similarly aluminium, guarantee that three is securely welded on
Together.
The extension end of the anode ear has the interconnecting piece bent to shell and the seam crossing of nut cap.The interconnecting piece of bending,
The case where can guaranteeing seam of the anode ear across shell and nut cap, avoiding the occurrence of rosin joint or desoldering generation.
Insulation board is equipped between the nut cap and shell, the center of insulation board has the through-hole passed through for negative electrode lug, edge
Notch with evacuation anode ear.Ensure that anode ear by the gap between notch and shell, avoids contacting with negative electrode lug.
There are two the notches, and is arranged symmetrically.
Anode ear thickness is excessive, will lead to nut cap and case weld out-of-flatness, it is preferred that the anode ear with a thickness of
10-20μm。
Anode ear extension end of the present invention is welded on the seam crossing between shell and nut cap, so that it may so that anode ear is far from cathode
Ear, it is ensured that they will not contact and short circuit occurs, and improve the security performance of lithium ion battery.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of lithium ion battery of the present invention.
Fig. 2 is positive plate white edge cutting mode schematic diagram of the present invention.
Fig. 3 is positive plate white edge another kind cutting mode schematic diagram.
Fig. 4 is the enlarged drawing of anode ear weld structure of the present invention.
Specific embodiment
As shown in Figure 1 and Figure 4, a kind of aluminum shell column lithium ion battery, including shell 1, nut cap 2, battery core 3 and insulation board 4,
Wherein 4 center of nut cap is equipped with negative terminal 21, and lower part is equipped with sealing ring 22, and the top surface of corresponding insulation board 4 has seal chamber, this is close
The lower part for sealing chamber and nut cap is cooperated by the sealing of sealing ring 22, to protect the negative electrode lug 32 across insulation board 4.
Battery core is turned around by positive plate, negative electrode tab and diaphragm and is formed, and is integrally placed in shell 1, and nut cap 2 is matched with the sealing of shell 1
Close, between have a circle seam.
The edge of insulation board 4 is set there are two symmetrical notch 42, and notch 42 and the inner wall of shell 1 are cooperatively formed for anode ear
32 through-holes passed through, 4 center of insulation board are additionally provided with the through-hole 41 passed through for negative electrode lug 32, and shape is strip, substantially with it is negative
The shape of tab matches.Negative electrode lug 32 is welded by through-hole 41 and 21 phase of negative terminal.
The welding manner for theing improvement is that anode ear of the invention, as shown in figure 4,31 one end of anode ear and battery core 3
Positive plate connection, the other end stretch out battery core 3, the seaming position being welded between shell 1 and nut cap 2.Because negative electrode lug 32 stretches out
Part be encapsulated in the seal cavity that nut cap 2 and insulation board 4 are formed substantially, and anode ear 31 is close to the inner wall of shell 1, weldering
Position is connect far from negative electrode lug, ensures that positive and negative tab will not be in contact, avoids short circuit.
Because traditional anode ear thickness is probably at 150 μm or so, if be directly welded between shell 1 and nut cap 2
In seam, then it will lead to shell 1 and out-of-flatness welded in nut cap 2.And positive plate collector is aluminium foil, thickness only has 15 μm of left sides
The right side, if using the white edge of collector can be to avoid the above problem as anode ear.
As described in Fig. 2 and Fig. 3, the present invention provides the cutting mode of two kinds of positive plate white edges, first way elder generation horizontal cutting
It cuts to form anode ear 31, then proceedes to chamfer, guarantee that base portion is thicker, avoid pulling apart.The second way is the bottom of from along vertical cutting shape
It at anode ear 31, then proceedes to chamfer, base portion is allowed to broaden, naturally it is also possible to using other cutting modes.It, will be positive after cutting
Ear 31 flips up, and stretches out battery core 3.The width of anode ear and traditional tab width are almost the same, in 2-3mm.In addition, being
Facilitate welding, the extension end of anode ear forms interconnecting piece to the seam bending between shell and nut cap.
The main difference of battery assembly method of the present invention and conventional batteries is exactly before shell 1 and nut cap 2 are welded, will be described
Interconnecting piece is placed in seam, after the completion of shell and nut cap welding, part that anode ear is pierced by also while being cut away, because being positive
Tab is very thin, thus in appearance and performance with the basic indifference of conventional batteries.
Claims (7)
1. a kind of aluminum shell column lithium ion battery, including shell, nut cap and battery core, the battery core includes positive plate, negative electrode tab, just
Tab, negative electrode lug and diaphragm, be integrally placed at shell and nut cap cooperation constitute seal cavity in, which is characterized in that it is described just
Tab one end connects positive plate, and the other end stretches out battery core, is welded on seam crossing between shell and nut cap, the nut cap and shell
Between be equipped with insulation board, the center of insulation board has the through-hole passed through for negative electrode lug, and edge has the notch of evacuation anode ear, lid
Cap center is equipped with negative terminal, and lower part is equipped with sealing ring, and the top surface of corresponding insulation board has a seal chamber, the seal chamber and nut cap
Lower part is sealed by sealing ring to be cooperated, and the negative electrode lug across insulation board is protected.
2. aluminum shell column lithium ion battery as described in claim 1, which is characterized in that the positive plate has white edge, described
Anode ear is formed by white edge cutting fold.
3. aluminum shell column lithium ion battery as claimed in claim 2, which is characterized in that the width of the anode ear is 2-3mm.
4. aluminum shell column lithium ion battery as claimed in claim 1 or 2, which is characterized in that the collector of the positive plate is
Aluminium foil.
5. aluminum shell column lithium ion battery as claimed in claim 1 or 2, which is characterized in that the extension end of the anode ear has
The interconnecting piece of oriented shell and the bending of the seam crossing of nut cap.
6. aluminum shell column lithium ion battery as described in claim 1, which is characterized in that there are two the notches, and symmetrical cloth
It sets.
7. aluminum shell column lithium ion battery as claimed in claim 1 or 2, which is characterized in that the anode ear with a thickness of 10-
20μm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610671225.9A CN106169540B (en) | 2016-08-15 | 2016-08-15 | A kind of aluminum shell column lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610671225.9A CN106169540B (en) | 2016-08-15 | 2016-08-15 | A kind of aluminum shell column lithium ion battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106169540A CN106169540A (en) | 2016-11-30 |
| CN106169540B true CN106169540B (en) | 2019-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610671225.9A Active CN106169540B (en) | 2016-08-15 | 2016-08-15 | A kind of aluminum shell column lithium ion battery |
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| CN (1) | CN106169540B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108198968A (en) * | 2018-02-01 | 2018-06-22 | 广东微电新能源有限公司 | For the cap assemblies and battery of battery |
| JP7351447B2 (en) * | 2019-10-02 | 2023-09-27 | エルジー エナジー ソリューション リミテッド | Cylindrical batteries and battery packs containing them |
| CN113708021B (en) * | 2021-08-02 | 2023-06-13 | 惠州锂威新能源科技有限公司 | Manufacturing method of multi-lug battery and multi-lug battery |
| CN116848719A (en) * | 2021-11-26 | 2023-10-03 | 宁德时代新能源科技股份有限公司 | Battery monomer, battery, electric equipment and preparation method and equipment of battery monomer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2824317Y (en) * | 2005-06-27 | 2006-10-04 | 东莞新能源电子科技有限公司 | Aluminium shell cylinder shaped lithium ion cell |
| CN1917272A (en) * | 2006-09-08 | 2007-02-21 | 天津力神电池股份有限公司 | Columniform lithium ion battery in aluminum case, and prepartion method |
| CN201893423U (en) * | 2010-12-20 | 2011-07-06 | 东莞新能源科技有限公司 | Square lithium-ion battery |
| CN204333097U (en) * | 2015-01-22 | 2015-05-13 | 松下能源(无锡)有限公司 | Battery insulation board and comprise lithium ion battery and the battery pack of this battery insulation board |
| CN206040715U (en) * | 2016-08-15 | 2017-03-22 | 天臣新能源研究南京有限公司 | Aluminum hull cylindrical lithium ion battery |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203733894U (en) * | 2014-01-17 | 2014-07-23 | 宁德新能源科技有限公司 | Lithium ion battery |
-
2016
- 2016-08-15 CN CN201610671225.9A patent/CN106169540B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2824317Y (en) * | 2005-06-27 | 2006-10-04 | 东莞新能源电子科技有限公司 | Aluminium shell cylinder shaped lithium ion cell |
| CN1917272A (en) * | 2006-09-08 | 2007-02-21 | 天津力神电池股份有限公司 | Columniform lithium ion battery in aluminum case, and prepartion method |
| CN201893423U (en) * | 2010-12-20 | 2011-07-06 | 东莞新能源科技有限公司 | Square lithium-ion battery |
| CN204333097U (en) * | 2015-01-22 | 2015-05-13 | 松下能源(无锡)有限公司 | Battery insulation board and comprise lithium ion battery and the battery pack of this battery insulation board |
| CN206040715U (en) * | 2016-08-15 | 2017-03-22 | 天臣新能源研究南京有限公司 | Aluminum hull cylindrical lithium ion battery |
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| Publication number | Publication date |
|---|---|
| CN106169540A (en) | 2016-11-30 |
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