CN115084790A - Manufacturing method of high-energy-density battery - Google Patents
Manufacturing method of high-energy-density battery Download PDFInfo
- Publication number
- CN115084790A CN115084790A CN202210834329.2A CN202210834329A CN115084790A CN 115084790 A CN115084790 A CN 115084790A CN 202210834329 A CN202210834329 A CN 202210834329A CN 115084790 A CN115084790 A CN 115084790A
- Authority
- CN
- China
- Prior art keywords
- cover plate
- battery
- groups
- aluminum shell
- positive
- Prior art date
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 30
- 238000003466 welding Methods 0.000 claims abstract description 30
- 239000000758 substrate Substances 0.000 claims abstract description 14
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims 1
- 239000004411 aluminium Substances 0.000 abstract 2
- 238000004080 punching Methods 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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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
- H01M50/147—Lids or covers
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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
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling 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
- 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
Abstract
The invention discloses a manufacturing method of a high-energy-density battery, belonging to the field of battery manufacturing, and the manufacturing method of the high-energy-density battery comprises the following steps: punching the substrate, namely punching a through groove on the substrate to obtain a positive cover plate; step two: connecting the lugs, and respectively welding the two groups of lugs on the two groups of battery cells through an ultrasonic welding machine; step three: assembling, namely, arranging the battery cell welded with the tab into an aluminum shell, covering the negative cover plate with the aluminum shell, penetrating the tab through the through groove on the positive cover plate, and covering the positive cover plate with the aluminum shell; step four: the pole lugs are fixed, and the two groups of pole lugs are folded and connected at one end of the positive pole cover plate extending to the outer side; step five: utmost point ear is sealed, and through seting up logical groove on anodal apron, the link of utmost point ear passes logical groove and extends to anodal apron outside fifty percent discount welding, reduces utmost point ear in the space that aluminium hull internal weld took, in the aluminium hull space of equal size, has saved the battery inner space, has improved the energy density space that holds electric core.
Description
Technical Field
The invention relates to the technical field of battery manufacturing, in particular to a manufacturing method of a high-energy-density battery.
Background
The battery is provided with a pole (anode and cathode), a battery core, a shell and the like, wherein the pole and the battery core are connected together through a pole lug to form a passage; due to the connection mode, the lug is arranged in the battery, the internal space of the battery is occupied (under the condition that the height of the shell is fixed), and the corresponding energy density space is lost.
Disclosure of Invention
In order to overcome the technical problems, the invention aims to provide a method for manufacturing a high-energy-density battery, which is characterized in that a through groove is formed in an anode cover plate, and a connecting end of a tab passes through the through groove and extends to the outer side of the anode cover plate to be folded and welded, so that the space occupied by the tab in the welding process inside an aluminum shell is reduced, the internal space of the battery is saved in the aluminum shell space with the same size, and the energy density space for accommodating a battery cell is improved.
The purpose of the invention can be realized by the following technical scheme:
a method of making a high energy density battery, the high energy density battery comprising: the battery comprises an aluminum shell, a positive cover plate, a negative cover plate, two groups of battery cells, two groups of tabs and terminals, wherein one side of the positive cover plate is provided with a through groove;
the high energy density battery is manufactured by the following steps:
the method comprises the following steps: the method comprises the following steps of (1) stamping a substrate, namely placing the substrate on a stamping die, stamping the substrate through a punch, and stamping a through groove on the substrate to obtain a positive cover plate;
step two: connecting the lugs, and respectively welding the two groups of lugs on the two groups of battery cells through an ultrasonic welding machine;
step three: assembling, namely, installing the battery cell welded with the tab into an aluminum shell, covering the negative electrode cover plate with the aluminum shell, then carrying out peripheral welding on the negative electrode cover plate and the aluminum shell through a laser welding machine, penetrating the tab through a through groove on the positive electrode cover plate, covering the positive electrode cover plate with the aluminum shell, and carrying out peripheral welding on the positive electrode cover plate and the aluminum shell through a laser welding machine;
step four: fixing the lugs, connecting two groups of lugs on the positive cover plate to extend to one end of the outer side, and then welding the folded part by a laser welding machine;
step five: and sealing the electrode lug, namely placing the terminal on the outer side of the anode cover plate, which is folded in half, shielding the folded electrode lug, welding the terminal through a laser welding machine, sealing the electrode lug and finishing the manufacture of the battery.
As a further scheme of the invention: in the first step, two groups of through grooves are formed, the two groups of through grooves are symmetrically arranged, and the two groups of tabs respectively penetrate through the two groups of through grooves.
As a further scheme of the invention: and step four, folding and stacking the two ends of the pole lug inwards.
The invention has the beneficial effects that:
in the invention, the through groove is formed in the positive electrode cover plate, and the connecting end of the tab passes through the through groove and extends to the outer side of the positive electrode cover plate to be folded and welded, so that the space occupied by the tab in the welding process inside the aluminum shell is reduced, the internal space of the battery is saved in the aluminum shell space with the same size, and the energy density space for accommodating the battery cell is improved.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a process diagram of the present invention;
FIG. 2 is a schematic view of the overall structure of the high energy density battery of the present invention;
FIG. 3 is a schematic view of the internal structure of the high energy density battery of the present invention;
fig. 4 is a schematic diagram of a positive electrode cover plate structure in the high energy density battery of the present invention.
In the figure: 1. an aluminum shell; 2. a positive electrode cover plate; 201. a through groove; 3. a negative electrode cover plate; 4. an electric core; 5. a tab; 6. and a terminal.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 4, a method for manufacturing a high energy density battery includes: the battery comprises an aluminum shell 1, a positive cover plate 2, a negative cover plate 3, two groups of battery cells 4, two groups of tabs 5 and a terminal 6, wherein a through groove 201 is formed in one side of the positive cover plate 2;
the high energy density battery is manufactured by the following steps:
the method comprises the following steps: the method comprises the following steps of (1) substrate stamping, namely placing a substrate on a stamping die, stamping the substrate through a 100T punch press, and stamping two groups of symmetrical through grooves 201 on the substrate to obtain a positive cover plate 2;
step two: the lugs 5 are connected, and the two groups of lugs 5 are respectively welded at the side connection positions on the two groups of battery cells 4 through an ultrasonic welding machine;
step three: assembling, namely, installing the battery cell 4 with the welded lugs 5 into the aluminum shell 1, covering the negative electrode cover plate 3 with the aluminum shell 1, then carrying out peripheral welding on the negative electrode cover plate 3 and the aluminum shell 1 through a laser welding machine, respectively penetrating the two groups of lugs 5 through the through grooves 201 on the positive electrode cover plate 2, covering the positive electrode cover plate 2 with the aluminum shell 1, and carrying out peripheral welding on the positive electrode cover plate 2 and the aluminum shell 1 through a laser welding machine;
step four: the tabs 5 are fixed, and two groups of tabs 5 are folded and stacked inwards at one end of the positive cover plate 2 extending to the outer side, and then the folded part is welded through a laser welding machine;
step five: the tab 5 is sealed, the terminal 6 is placed on the outer side of the positive cover plate 2, the tab 5 is folded in half, the folded tab 5 is covered, the terminal 6 is welded through a laser welding machine, the tab 5 is sealed, and the battery is manufactured.
The working principle of the invention is as follows: through set up logical groove 201 on anodal apron 2, utmost point ear 5's link passes logical groove 201 and extends to the anodal apron 2 outside fifty percent discount welding, reduces utmost point ear 5 in the space that 1 internal weld of aluminum hull took, in 1 space of aluminum hull of the same size, has saved the battery inner space, has improved the energy density space that holds electric core 4.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (3)
1. A method of making a high energy density battery, the high energy density battery comprising: the battery comprises an aluminum shell (1), a positive cover plate (2), a negative cover plate (3), two groups of battery cores (4), two groups of tabs (5) and terminals (6), wherein a through groove (201) is formed in one side of the positive cover plate (2);
the high energy density battery is manufactured by the following steps:
the method comprises the following steps: the method comprises the following steps of (1) stamping a substrate, namely placing the substrate on a stamping die, stamping the substrate through a punch, and stamping a through groove (201) on the substrate to obtain a positive cover plate (2);
step two: the lugs (5) are connected, and the two groups of lugs (5) are respectively welded on the two groups of battery cells (4) through an ultrasonic welding machine;
step three: assembling, namely, installing an electric core (4) welded with a tab (5) into an aluminum shell (1), covering a negative electrode cover plate (3) with the aluminum shell (1), then carrying out peripheral welding on the negative electrode cover plate (3) and the aluminum shell (1) through a laser welding machine, penetrating the tab (5) through a through groove (201) on a positive electrode cover plate (2), covering the positive electrode cover plate (2) with the aluminum shell (1), and carrying out peripheral welding on the positive electrode cover plate (2) and the aluminum shell (1) through a laser welding machine;
step four: the tabs (5) are fixed, one ends of the two groups of tabs (5) extending to the outer side on the positive electrode cover plate (2) are folded and connected, and then the folded parts are welded through a laser welding machine;
step five: utmost point ear (5) are sealed, place utmost point ear (5) fifty percent discount's outside on positive pole apron (2) with terminal (6), carry out the shade to folding utmost point ear (5), and rethread laser-beam welding machine welds terminal (6), seals utmost point ear (5), accomplishes the preparation to the battery.
2. The method for manufacturing a high energy density battery according to claim 1, wherein in the first step, two groups of through slots (201) are formed, the two groups of through slots (201) are symmetrically arranged, and two groups of tabs (5) are respectively arranged through the two groups of through slots (201).
3. The method for manufacturing a high energy density battery as claimed in claim 2, wherein the two ends of the tab (5) are folded inwards and stacked in four steps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210834329.2A CN115084790B (en) | 2022-07-14 | 2022-07-14 | Manufacturing method of high-energy-density battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210834329.2A CN115084790B (en) | 2022-07-14 | 2022-07-14 | Manufacturing method of high-energy-density battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115084790A true CN115084790A (en) | 2022-09-20 |
| CN115084790B CN115084790B (en) | 2024-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210834329.2A Active CN115084790B (en) | 2022-07-14 | 2022-07-14 | Manufacturing method of high-energy-density battery |
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| Country | Link |
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| CN (1) | CN115084790B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649149A (en) * | 2018-05-16 | 2018-10-12 | 多氟多（焦作）新能源科技有限公司 | The connection structure and battery assembly method of battery cover board and lug |
| CN209896161U (en) * | 2019-05-13 | 2020-01-03 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| CN110828907A (en) * | 2019-12-10 | 2020-02-21 | 四川新敏雅电池科技有限公司 | Power battery and preparation method thereof |
| CN110828908A (en) * | 2019-11-19 | 2020-02-21 | 凌帕新能源科技(上海)有限公司 | Battery cell, manufacturing method thereof and lithium battery |
| CN212571267U (en) * | 2020-07-02 | 2021-02-19 | 江苏英耐杰新能源有限公司 | Soft packet of PCB board in groups |
| CN216488407U (en) * | 2021-12-02 | 2022-05-10 | 宁德时代新能源科技股份有限公司 | Battery monomer, secondary battery and power consumption device |
-
2022
- 2022-07-14 CN CN202210834329.2A patent/CN115084790B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649149A (en) * | 2018-05-16 | 2018-10-12 | 多氟多（焦作）新能源科技有限公司 | The connection structure and battery assembly method of battery cover board and lug |
| CN209896161U (en) * | 2019-05-13 | 2020-01-03 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| CN110828908A (en) * | 2019-11-19 | 2020-02-21 | 凌帕新能源科技(上海)有限公司 | Battery cell, manufacturing method thereof and lithium battery |
| CN110828907A (en) * | 2019-12-10 | 2020-02-21 | 四川新敏雅电池科技有限公司 | Power battery and preparation method thereof |
| CN212571267U (en) * | 2020-07-02 | 2021-02-19 | 江苏英耐杰新能源有限公司 | Soft packet of PCB board in groups |
| CN216488407U (en) * | 2021-12-02 | 2022-05-10 | 宁德时代新能源科技股份有限公司 | Battery monomer, secondary battery and power consumption device |
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| Publication number | Publication date |
|---|---|
| CN115084790B (en) | 2024-04-09 |
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| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Chengshi Inventor after: Dai Junwei Inventor after: Zhang Changchun Inventor after: Liu Zijun Inventor before: Dai Junwei Inventor before: Liu Chengshi Inventor before: Zhang Changchun Inventor before: Liu Zijun |
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| CB03 | Change of inventor or designer information | ||
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| GR01 | Patent grant |