CN105552432A - Multi-cathode-lug cylindrical lithium ion battery - Google Patents
Multi-cathode-lug cylindrical lithium ion battery Download PDFInfo
- Publication number
- CN105552432A CN105552432A CN201610154247.8A CN201610154247A CN105552432A CN 105552432 A CN105552432 A CN 105552432A CN 201610154247 A CN201610154247 A CN 201610154247A CN 105552432 A CN105552432 A CN 105552432A
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- CN
- China
- Prior art keywords
- battery
- anode ear
- lithium ion
- ion battery
- cylindrical lithium
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- 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
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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
- 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
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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
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a multi-cathode-lug cylindrical lithium ion battery. The multi-cathode-lug cylindrical lithium ion battery comprises a battery shell (4). A battery pole set (6) is placed in the battery shell (4). The top of the battery pole set (6) is connected with multiple cathode lugs (1). The cathode lugs (1) are welded together in an ultrasonic welding mode to form a cathode lug set (10). The cathode lug set (10) and a battery cover (5) are welded together in a laser welding mode. According to the multi-cathode-lug cylindrical lithium ion battery, the cathode lugs can be conveniently and effectively welded to the battery cover of the cylindrical lithium ion battery, the welding effect is guaranteed, the production quality of the battery is improved, the overall production cost of the battery is reduced, and the battery can be easily and widely applied to production and has great production practice significance.
Description
Technical field
The present invention relates to cell art, particularly relate to a kind of many anode ears cylindrical lithium ion battery.
Background technology
At present, lithium ion battery have specific energy high, recycle often, the advantage such as memory time is long, not only on a portable electronic device as mobile phone, Digital Video and laptop computer are used widely, and be widely used in the big-and-middle-sized electrical equipment aspects such as electric automobile, electric bicycle and electric tool, therefore require more and more higher to the up-to-standard rate of lithium ion battery.
For cylindrical lithium ion battery, in concrete production practices, the anode ear quantity of inside battery pole group is commonly one, and the quantity of negative electrode lug is then commonly one or two.Wherein, being laser welding between anode ear and battery cover, is resistance welded between negative electrode lug and battery case.Negative electrode lug can be the reason of multistage ear for which employs resistance welding technology, resistance welding technology can weld together disposable for soldered for multilayer material simultaneously, and two-layer soldered material often can only weld together by laser welding mode, this is because laser welding can cause energy sharp-decay when penetrating the soldered material of multilayer and welding, outer welding material is often occurred to weld Lou and the situation of rosin joint appears in the soldered material of internal layer, therefore, cylindrical lithium ion battery many anode ears solder technology is one of key factor of restriction battery development.
Along with cylindrical lithium ion battery constantly expands as the application of power type battery in industries such as electric tool, electric automobile, energy storage, require increasing to the charging and discharging currents of battery, discharge and recharge time requirement is shorter and shorter, require more and more less to the internal resistance of battery accordingly, therefore, many anode ears cylindrical lithium ion battery will become a kind of development trend.But, based on current technology, for many anode ears, if it is welded with battery cover, easily produce welding weldering leakage problem, the effect of welding battery cannot be ensured.In addition, usually there is residual electrolyte between two-layer anode ear before welding, cannot clean clean, easily cause the stability of welding to decline.
Therefore, at present in the urgent need to developing a kind of technology, it can facilitate, effectively be welded on the battery cover of cylindrical lithium ion battery by multiple anode ear, ensures the effect of welding, promotes the quality of production of battery, and then reduces the integral production cost of battery.
Summary of the invention
In view of this, the object of this invention is to provide a kind of many anode ears cylindrical lithium ion battery, it can facilitate, effectively be welded on the battery cover of cylindrical lithium ion battery by multiple anode ear, ensure the effect of welding, promote the quality of production of battery, and then reducing the integral production cost of battery, application in being conducive to producing widely, is of great practical significance.
For this reason, the invention provides a kind of many anode ears cylindrical lithium ion battery, comprise battery case, be placed with battery pole group in described battery case, described battery pole group top is connected with multiple anode ear;
Described multiple anode ear is welded together to form anode ear group by ultrasonic bonding mode;
Described anode ear group and battery cover are welded together by laser welding mode.
Wherein, any individual layer anode ear in described anode ear group and battery cover are welded together by laser welding mode.
Wherein, the anode ear that in described anode ear group, length is the longest and battery cover are welded together by laser welding mode.
Wherein, described multiple anode ear is multiple anode ears that length is successively decreased one by one.
Wherein, between described any two adjacent anode ears, there is ultrasonic wave and close solder joint, there is between described battery cover and anode ear group Laser Welding contact.
From above technical scheme provided by the invention, compared with prior art, the invention provides a kind of many anode ears cylindrical lithium ion battery, it can facilitate, effectively be welded on the battery cover of cylindrical lithium ion battery by multiple anode ear, ensure the effect of welding, promote the quality of production of battery, and then reduce the integral production cost of battery, in being conducive to producing widely, application, is of great practical significance.
Accompanying drawing explanation
Fig. 1 be one many anode ears cylindrical lithium ion battery provided by the invention before multiple anode ear is welded together, the syndeton schematic diagram of multiple anode ear and battery pole group;
Fig. 2 be one many anode ears cylindrical lithium ion battery provided by the invention when multiple anode ear is welded together, the syndeton schematic diagram of multiple anode ear and battery pole group;
Fig. 3 is the left view of a kind of many anode ears cylindrical lithium ion battery provided by the invention when multiple anode ear being welded together to form anode ear group and anode ear group is welded rear with battery cover;
Fig. 4 is the front view of a kind of many anode ears cylindrical lithium ion battery provided by the invention when multiple anode ear being welded together to form anode ear group and anode ear group is welded rear with battery cover;
In figure, 1 is anode ear, and 2 is ultrasonic wave conjunction solder joint, and 3 is Laser Welding contact, and 4 is battery case, and 5 is battery cover, and 6 is battery pole group, and 10 is anode ear group.
Embodiment
In order to make those skilled in the art person understand the present invention program better, below in conjunction with drawings and embodiments, the present invention is described in further detail.
See Fig. 1 to Fig. 4, the invention provides a kind of many anode ears cylindrical lithium ion battery, comprise battery case 4, be placed with battery pole group 6 in described battery case 4, described battery pole group 6 top is connected with multiple anode ear 1.
In the present invention, described multiple anode ear 1 is welded together to form anode ear group 10 by ultrasonic bonding mode.
In specific implementation, between described any two adjacent anode ears 1, there is ultrasonic wave and close solder joint 2.It should be noted that, between described multiple anode ear 1, the distributed welding of adjacent two layers anode ear can be carried out, also disposablely can complete the conjunction weldering welding of multilayer anode ear,
In the present invention, described anode ear group 10 is welded together by laser welding mode with battery cover 5, has Laser Welding contact 3 between described battery cover 5 and anode ear group 10.In specific implementation, any individual layer anode ear 1 in described anode ear group 10 is welded together by laser welding mode with battery cover 5.Wherein optimal way is: anode ear 1 and battery cover 5 that in described anode ear group 10, length is the longest are welded together by laser welding mode.
In the present invention, in specific implementation, multiple anode ears that described multiple anode ear 1 successively decreases one by one for length.
Therefore, for many anode ears cylindrical lithium ion battery provided by the invention, in concrete assembling practice, before assembling, first, by ultrasonic bonding mode, multiple anode ear is carried out ultrasonic wave and close weldering, close postwelding and form anode ear group 10, then battery pole group 6 is dropped into assembly process again to produce, put into battery case 4, and then anode ear 1 the longest for length in anode ear group 10 is welded by laser welding mode with battery cover 5, namely through the assembling shown in Fig. 3, Fig. 4, obtain many anode ears cylindrical lithium ion battery that the present invention needs.
It should be noted that, for many anode ears cylindrical lithium ion battery provided by the invention, which employs a kind of novel cylindrical lithium ion battery anode ear welding manner, before battery assembling, first by ultrasonic bonding mode, multiple anode ears of battery pole group are carried out ultrasonic wave and close postwelding formation anode ear group, assembling is dropped into again after having welded, by the mode of laser welding, the individual layer anode ear in anode ear group is welded with battery cover, multiple anode ear is welded on the battery cover of cylindrical lithium ion battery by final realization, effectively can ensure the effect of welding.
For many anode ears cylindrical lithium ion battery provided by the invention, it has following advantage:
1, the impact of many anode ears multilayer laser welding difficulty is no longer subject to, after first anode ear being carried out ultrasonic wave conjunction weldering formation anode ear group by ultrasonic bonding mode, by Laser Welding mode, the individual layer anode ear in anode ear group is welded with battery cover again, remain the laser welding mode of individual layer lug and the battery cover had in original production practices, and then improve the stability of welding;
2, cylindrical lithium ion battery provided by the invention is not by the quantitative limitation of anode ear number, and the use of new welding procedure can make product design can break through design bottleneck, and welding effect is all unaffected;
3, in concrete production, the protruded length of multiple anode ear can successively decrease one by one, no longer adopts original equal length to design, and saves the consumption of anode ear, reduces the production cost of battery.
In sum, compared with prior art, one many anode ears cylindrical lithium ion battery provided by the invention, it can facilitate, effectively be welded on the battery cover of cylindrical lithium ion battery by multiple anode ear, ensure the effect of welding, promote the quality of production of battery, and then reduce the integral production cost of battery, in being conducive to producing widely, application, is of great practical significance.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. anode ear cylindrical lithium ion battery more than a kind, it is characterized in that, comprise battery case (4), be placed with battery pole group (6) in described battery case (4), described battery pole group (6) top is connected with multiple anode ear (1);
Described multiple anode ear (1) is welded together to form anode ear group (10) by ultrasonic bonding mode;
Described anode ear group (10) and battery cover (5) are welded together by laser welding mode.
2. lithium ion battery as claimed in claim 1, is characterized in that, any individual layer anode ear (1) in described anode ear group (10) and battery cover (5) are welded together by laser welding mode.
3. lithium ion battery as claimed in claim 2, is characterized in that, the anode ear (1) that in described anode ear group (10), length is the longest and battery cover (5) are welded together by laser welding mode.
4. lithium ion battery as claimed in claim 1, is characterized in that, multiple anode ears that described multiple anode ear (1) is successively decreased one by one for length.
5. as the lithium ion battery in Claims 1-4 as described in any one, it is characterized in that, between described any two adjacent anode ears (1), there is ultrasonic wave and close solder joint (2), there is between described battery cover (5) and anode ear group (10) Laser Welding contact (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610154247.8A CN105552432A (en) | 2016-03-18 | 2016-03-18 | Multi-cathode-lug cylindrical lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610154247.8A CN105552432A (en) | 2016-03-18 | 2016-03-18 | Multi-cathode-lug cylindrical lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105552432A true CN105552432A (en) | 2016-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610154247.8A Pending CN105552432A (en) | 2016-03-18 | 2016-03-18 | Multi-cathode-lug cylindrical lithium ion battery |
Country Status (1)
| Country | Link |
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| CN (1) | CN105552432A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110625310A (en) * | 2019-09-27 | 2019-12-31 | 常德烟草机械有限责任公司 | Battery cell tab joint welding equipment |
| WO2020233141A1 (en) * | 2019-05-21 | 2020-11-26 | Ningde Amperex Technology Limited | Electrode sheet and battery cell |
| CN112453735A (en) * | 2020-10-09 | 2021-03-09 | 湖北亿纬动力有限公司 | Tab welding method, battery manufacturing method and battery |
| USD982375S1 (en) | 2019-06-06 | 2023-04-04 | Sharkninja Operating Llc | Food preparation device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202259518U (en) * | 2011-09-23 | 2012-05-30 | 维动新能源股份有限公司 | Combined lithium battery with welded tabs |
| CN202549967U (en) * | 2012-03-03 | 2012-11-21 | 吉安市优特利科技有限公司 | Connection mode of multiple polar lugs and cover plate of power lithium-ion battery |
-
2016
- 2016-03-18 CN CN201610154247.8A patent/CN105552432A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202259518U (en) * | 2011-09-23 | 2012-05-30 | 维动新能源股份有限公司 | Combined lithium battery with welded tabs |
| CN202549967U (en) * | 2012-03-03 | 2012-11-21 | 吉安市优特利科技有限公司 | Connection mode of multiple polar lugs and cover plate of power lithium-ion battery |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020233141A1 (en) * | 2019-05-21 | 2020-11-26 | Ningde Amperex Technology Limited | Electrode sheet and battery cell |
| US11817543B2 (en) | 2019-05-21 | 2023-11-14 | Ningde Amperex Technology Limited | Electrode sheet and battery cell |
| USD982375S1 (en) | 2019-06-06 | 2023-04-04 | Sharkninja Operating Llc | Food preparation device |
| CN110625310A (en) * | 2019-09-27 | 2019-12-31 | 常德烟草机械有限责任公司 | Battery cell tab joint welding equipment |
| CN112453735A (en) * | 2020-10-09 | 2021-03-09 | 湖北亿纬动力有限公司 | Tab welding method, battery manufacturing method and battery |
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| PB01 | Publication | ||
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Application publication date: 20160504 |