CN110931879A - Novel columnar lithium ion battery - Google Patents
Novel columnar lithium ion battery Download PDFInfo
- Publication number
- CN110931879A CN110931879A CN201911127780.5A CN201911127780A CN110931879A CN 110931879 A CN110931879 A CN 110931879A CN 201911127780 A CN201911127780 A CN 201911127780A CN 110931879 A CN110931879 A CN 110931879A
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- Prior art keywords
- cover plate
- positive
- lithium ion
- negative
- insulating pad
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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
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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
-
- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
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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)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The novel columnar lithium ion battery provided by the invention is of a regular hexagonal prism structure, and the anode pole and the cathode pole are respectively positioned on two end faces of the regular hexagonal prism structure. When the novel cylindrical lithium ion battery pack provided by the invention forms a battery module, the batteries are assembled in a surface-to-surface laminating mode, so that the gaps among the batteries can be effectively reduced, the space of the battery pack is fully utilized, and the volume energy density of the battery pack is relatively improved, so that the assembled battery module has better mechanical impact resistance compared with a common cylindrical lithium ion battery module.
Description
Technical Field
The invention relates to the technical field of lithium ion batteries, in particular to a novel columnar lithium ion battery.
Background
As a new power energy using mode of national great development, the lithium ion battery has started to be applied to electric vehicles, energy storage and various intelligent devices in a large scale, and has characteristics of high capacity, small volume and quality, good cycle capacity, low requirement on environment and the like, so that people are expected to be in great favor of the lithium ion battery. However, in practical applications, the lithium iron phosphate lithium ion battery with higher safety performance has a low energy density, and still cannot meet the energy requirement of people, and particularly, when the lithium iron phosphate lithium ion battery is used as a power source of an automobile, the lithium iron phosphate lithium ion battery can hardly replace gasoline under certain volume and quality conditions. The ternary lithium ion battery with higher energy density can provide relatively sufficient power for automobiles, but the safety performance of the ternary lithium ion battery makes people hesitate, and the ternary lithium ion battery is likely to become a disaster due to high temperature and violent collision. Therefore, it is a necessary trend in the development of lithium ion batteries to increase the energy density of the lithium ion batteries while ensuring reliable safety performance.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a novel columnar lithium ion battery.
The novel columnar lithium ion battery provided by the invention is of a regular hexagonal prism structure, and the anode pole and the cathode pole are respectively positioned on two end faces of the regular hexagonal prism structure.
Preferably, the battery shell is of a hollow regular hexagonal prism structure, and the battery roll core is of a regular hexagonal prism structure.
Preferably, positive pole apron and negative pole apron are regular hexagon structure, and positive pole apron and negative pole apron cooperation battery case form and roll up the chamber that holds that the core matches with the battery.
Preferably, the positive electrode cap plate includes: the positive pole comprises a positive pole column, a positive pole upper insulating pad, a positive pole cover plate main body, a positive pole lower insulating pad and a positive pole lug connecting sheet; the main body of the positive cover plate is of a regular hexagon structure;
the positive pole upper insulating pad and the positive pole lower insulating pad are respectively arranged on the upper surface and the lower surface of the positive pole cover plate main body, the positive pole column is arranged on the upper surface of the positive pole upper insulating pad, the positive pole lug connecting sheet is arranged on the lower surface of the positive pole lower insulating pad, and the positive pole column is in conductive connection with the positive pole lug connecting sheet.
Preferably, the negative electrode cap plate includes: the negative pole comprises a negative pole post, a negative pole upper insulating pad, a negative pole cover plate main body, a negative pole lower insulating pad and a negative pole lug connecting sheet; the main body of the negative electrode cover plate is of a regular hexagon structure;
the upper insulating pad and the lower insulating pad of the negative pole are respectively arranged on the upper surface and the lower surface of the negative pole cover plate main body, the negative pole post is arranged on the upper surface of the insulating pad on the negative pole, the negative pole lug connecting sheet is arranged on the lower surface of the insulating pad under the negative pole, and the negative pole post is electrically connected with the negative pole lug connecting sheet.
Preferably, the positive pole lug and the negative pole lug at the two ends of the battery roll core are respectively connected with the positive pole lug connecting sheet and the negative pole lug connecting sheet in a welding manner.
Preferably, the positive electrode lug connecting piece and the negative electrode lug connecting piece are both of U-shaped structures, and the positive electrode lug and the negative electrode lug are respectively inserted into a U-shaped groove of the positive electrode lug connecting piece and a U-shaped groove of the negative electrode lug connecting piece.
Preferably, the positive electrode cover plate main body and the negative electrode cover plate main body are both connected with the battery shell in a welding mode.
According to the novel columnar lithium ion battery provided by the invention, when the battery module is formed by the novel columnar lithium ion battery, the batteries are assembled in a surface-to-surface laminating mode, so that the gap between the batteries can be effectively reduced, the space of the battery pack is fully utilized, the volume energy density of the battery pack is relatively improved, and the assembled battery module has better mechanical impact resistance compared with a common columnar lithium ion battery module.
And each single battery can be contacted with the adjacent single batteries in a surface-to-surface joint mode by the structure of the regular hexagonal prism, so that the contact area between the batteries is increased, the pressure generated by extrusion force is reduced, and the force applied to the cylindrical surface of each single battery in any direction can be dispersed to at least two adjacent batteries. Meanwhile, the six edges in the regular hexagonal prism structure also play a role of reinforcing ribs, so that the lithium ion battery with the hexagonal prism structure has better safety than a common cylindrical battery. In addition, a honeycomb-like module consisting of regular hexagonal prism unit cells can produce a larger effective cell space for the same amount of material than a general prismatic cell.
Drawings
Fig. 1 is a schematic diagram of a novel columnar lithium ion battery provided by the invention;
FIG. 2 is a top view of FIG. 1;
fig. 3 is an explosion diagram of a novel cylindrical lithium ion battery provided by the invention;
FIG. 4 is a schematic diagram of a novel pillar-shaped lithium ion battery according to the present invention;
FIG. 5 is a cross-sectional view of a novel cylindrical lithium ion battery according to the present invention;
FIG. 6 is an exploded view of the negative cover plate;
fig. 7 is a schematic diagram of a novel cylindrical lithium ion battery module.
The figure is as follows: the battery comprises a battery shell 1, a battery roll core 3, an anode cover plate 2.1, an anode pole 2.1.1, an anode upper insulation pad 2.1.2, an anode cover plate main body 2.1.3, a cathode lower insulation pad 2.1.4, an anode tab connecting piece 2.1.5, a cathode cover plate 2.2, a cathode pole 2.2.1, a cathode upper insulation pad 2.2.2, a cathode cover plate main body 2.2.3, a cathode lower insulation pad 2.2.4, a cathode tab connecting piece 2.2.5, an anode tab 3.1 and a cathode tab 3.2.
Detailed Description
Referring to fig. 1 to 5, the novel columnar lithium ion battery provided by the invention has a regular hexagonal prism structure, and the positive electrode post 2.1.1 and the negative electrode post 2.2.1 are respectively located on two end faces of the regular hexagonal prism structure.
So, refer to fig. 7, when constituteing the battery module through this novel column lithium ion battery, through the mode equipment of face and face laminating between battery and the battery, space between can effectual reduction battery, the space of make full use of battery package, the relative volume energy density that improves the battery package for the battery module after the equipment compares general cylinder lithium ion battery module and has better anti mechanical impact ability.
And each single battery can be contacted with the adjacent single batteries in a surface-to-surface joint mode by the structure of the regular hexagonal prism, so that the contact area between the batteries is increased, the pressure generated by extrusion force is reduced, and the force applied to the cylindrical surface of each single battery in any direction can be dispersed to at least two adjacent batteries. Meanwhile, the six edges in the regular hexagonal prism structure also play a role of reinforcing ribs, so that the lithium ion battery with the hexagonal prism structure has better safety than a common cylindrical battery. In addition, a honeycomb-like module consisting of regular hexagonal prism unit cells can produce a larger effective cell space for the same amount of material than a general prismatic cell.
Referring to fig. 5, in the present embodiment, the battery case 1 has a hollow regular hexagonal prism structure, and the battery roll core 3 has a regular hexagonal prism structure. Specifically, positive pole apron 2.1 and negative pole apron 2.2 are regular hexagon structure, and positive pole apron 2.1 and negative pole apron 2.2 cooperate battery case 1 to form and roll up the chamber that holds that 3 matches of core with the battery. So for the battery rolls up core 3 and is convenient for install inside battery case 1, and can guarantee not to leave the space between battery rolls up core 3 and the battery case 1, guarantees the stability that the battery rolled up core 3.
Referring to fig. 3, in the present embodiment, the positive electrode cover plate 2.1 includes: the positive pole comprises a positive pole post 2.1.1, a positive pole upper insulating pad 2.1.2, a positive pole cover plate main body 2.1.3, a positive pole lower insulating pad 2.1.4 and a positive pole lug connecting sheet 2.1.5; the positive electrode cover plate main body 2.1.3 is of a regular hexagon structure.
The upper insulating pad 2.1.2 and the lower insulating pad 2.1.4 of positive pole are installed respectively at the upper surface and the lower surface of positive pole apron main part 2.1.3, anodal utmost point post 2.1.1 is installed at the upper surface of anodal upper insulating pad 2.1.2, anodal utmost point ear connection piece 2.1.5 is installed at the lower surface of anodal lower insulating pad 2.1.4, and anodal utmost point post 2.1.1 is connected with anodal utmost point ear connection piece 2.1.5 electrically conductively.
With reference to fig. 6, the negative cover plate 2.2 comprises: the cathode pole 2.2.1, the cathode upper insulating pad 2.2.2, the cathode cover plate main body 2.2.3, the cathode lower insulating pad 2.2.4 and the cathode tab connecting piece 2.2.5, and the cathode cover plate main body 2.2.3 is of a regular hexagon structure.
The upper surface and the lower surface of the negative cover plate main body 2.2.3 are respectively installed with the upper insulating pad 2.2.2 and the lower insulating pad 2.2.4 of the negative pole, the upper surface of the upper insulating pad 2.2.2 of the negative pole is installed with the 2.2.1 of the negative pole, the lower surface of the lower insulating pad 2.2.4 of the negative pole is installed with the negative pole lug connecting piece 2.2.5, and the 2.2.1 of the negative pole and the negative pole lug connecting piece 2.2.5 are in conductive connection.
Thus, the positive cover plate main body 2.1.3 and the negative cover plate main body 2.2.3 can be connected with the battery shell 1 in a seamless mode, and the installation of the positive cover plate 2.1 and the negative cover plate 2.2 is facilitated. In the present embodiment, the positive electrode lid plate main body 2.1.3 and the negative electrode lid plate main body 2.2.3 are both welded to the battery case 1.
Specifically, in the present embodiment, the positive electrode tab 3.1 and the negative electrode tab 3.2 at the two ends of the battery roll core 3 are welded to the positive electrode tab connecting sheet 2.1.5 and the negative electrode tab connecting sheet 2.2.5, respectively.
In this embodiment, the positive tab connecting piece 2.1.5 and the negative tab connecting piece 2.2.5 are both U-shaped structures, and the positive tab 3.1 and the negative tab 3.2 are respectively inserted into the U-shaped groove of the positive tab connecting piece 2.1.5 and the U-shaped groove of the negative tab connecting piece 2.2.5.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.
Claims (8)
1. The novel columnar lithium ion battery is characterized in that the battery is of a regular hexagonal prism structure, and a positive pole post (2.1.1) and a negative pole post (2.2.1) are respectively positioned on two end faces of the regular hexagonal prism structure.
2. The novel cylindrical lithium ion battery according to claim 1, wherein the battery shell (1) has a hollow regular hexagonal prism structure, and the battery roll core (3) has a regular hexagonal prism structure.
3. The novel cylindrical lithium ion battery according to claim 2, characterized in that the positive cover plate (2.1) and the negative cover plate (2.2) are both regular hexagonal structures, and the positive cover plate (2.1) and the negative cover plate (2.2) cooperate with the battery case (1) to form a containing cavity matched with the battery roll core (3).
4. The new cylindrical lithium ion battery according to claim 3, characterized in that the positive electrode cover plate (2.1) comprises: the positive pole comprises a positive pole post (2.1.1), a positive upper insulating pad (2.1.2), a positive cover plate main body (2.1.3), a positive lower insulating pad (2.1.4) and a positive pole lug connecting sheet (2.1.5); the positive cover plate main body (2.1.3) is of a regular hexagon structure;
the upper insulating pad (2.1.2) and the lower insulating pad (2.1.4) of the anode are respectively arranged on the upper surface and the lower surface of the anode cover plate main body (2.1.3), the anode pole column (2.1.1) is arranged on the upper surface of the upper insulating pad (2.1.2), the anode pole lug connecting sheet (2.1.5) is arranged on the lower surface of the lower insulating pad (2.1.4) of the anode, and the anode pole column (2.1.1) is in conductive connection with the anode pole lug connecting sheet (2.1.5).
5. The new cylindrical lithium ion battery according to claim 4, characterized in that the negative electrode cover plate (2.2) comprises: a negative pole post (2.2.1), a negative pole upper insulating pad (2.2.2), a negative pole cover plate main body (2.2.3), a negative pole lower insulating pad (2.2.4) and a negative pole lug connecting sheet (2.2.5); the negative electrode cover plate main body (2.2.3) is of a regular hexagon structure;
the upper insulating pad (2.2.2) and the lower insulating pad (2.2.4) of the negative pole are respectively arranged on the upper surface and the lower surface of the negative pole cover plate main body (2.2.3), the upper surface of the upper insulating pad (2.2.2) of the negative pole is arranged on the negative pole, the lower surface of the lower insulating pad (2.2.4) of the negative pole is arranged on the negative pole lug connecting piece (2.2.5), and the negative pole lug (2.2.1) is in conductive connection with the negative pole lug connecting piece (2.2.5).
6. The novel cylindrical lithium ion battery according to claim 5, characterized in that the positive electrode tab (3.1) and the negative electrode tab (3.2) at the two ends of the battery roll core (3) are welded to the positive electrode tab connection piece (2.1.5) and the negative electrode tab connection piece (2.2.5), respectively.
7. The novel cylindrical lithium ion battery according to claim 6, wherein the positive electrode tab connecting piece (2.1.5) and the negative electrode tab connecting piece (2.2.5) are both U-shaped structures, and the positive electrode tab (3.1) and the negative electrode tab (3.2) are respectively inserted into the U-shaped groove of the positive electrode tab connecting piece (2.1.5) and the U-shaped groove of the negative electrode tab connecting piece (2.2.5).
8. The novel cylindrical lithium ion battery according to claim 5, characterized in that the positive cover plate body (2.1.3) and the negative cover plate body (2.2.3) are both welded to the battery housing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911127780.5A CN110931879A (en) | 2019-11-18 | 2019-11-18 | Novel columnar lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911127780.5A CN110931879A (en) | 2019-11-18 | 2019-11-18 | Novel columnar lithium ion battery |
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| Publication Number | Publication Date |
|---|---|
| CN110931879A true CN110931879A (en) | 2020-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911127780.5A Pending CN110931879A (en) | 2019-11-18 | 2019-11-18 | Novel columnar lithium ion battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115472973A (en) * | 2022-08-26 | 2022-12-13 | 重庆长安新能源汽车科技有限公司 | Battery cell structure, battery pack and vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09266012A (en) * | 1996-03-29 | 1997-10-07 | Nikkiso Co Ltd | Nonaqueous electrolyte secondary battery and battery assembly |
| CN101937977A (en) * | 2010-09-26 | 2011-01-05 | 广州市云通磁电有限公司 | Production method for regular hexagonal prism-shaped battery case |
| CN106159174A (en) * | 2015-04-14 | 2016-11-23 | 宁波维科电池股份有限公司 | A kind of cylindrical lithium battery |
| CN109786589A (en) * | 2019-01-04 | 2019-05-21 | 上海德朗能动力电池有限公司 | A kind of battery modules of square lithium ion battery and preparation method and its composition |
-
2019
- 2019-11-18 CN CN201911127780.5A patent/CN110931879A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09266012A (en) * | 1996-03-29 | 1997-10-07 | Nikkiso Co Ltd | Nonaqueous electrolyte secondary battery and battery assembly |
| CN101937977A (en) * | 2010-09-26 | 2011-01-05 | 广州市云通磁电有限公司 | Production method for regular hexagonal prism-shaped battery case |
| CN106159174A (en) * | 2015-04-14 | 2016-11-23 | 宁波维科电池股份有限公司 | A kind of cylindrical lithium battery |
| CN109786589A (en) * | 2019-01-04 | 2019-05-21 | 上海德朗能动力电池有限公司 | A kind of battery modules of square lithium ion battery and preparation method and its composition |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115472973A (en) * | 2022-08-26 | 2022-12-13 | 重庆长安新能源汽车科技有限公司 | Battery cell structure, battery pack and vehicle |
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Application publication date: 20200327 |
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