CN114871558A - Preparation method of flexible connection polar plate - Google Patents
Preparation method of flexible connection polar plate Download PDFInfo
- Publication number
- CN114871558A CN114871558A CN202210522148.6A CN202210522148A CN114871558A CN 114871558 A CN114871558 A CN 114871558A CN 202210522148 A CN202210522148 A CN 202210522148A CN 114871558 A CN114871558 A CN 114871558A
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- CN
- China
- Prior art keywords
- welding
- area
- soft
- polar plate
- flexible connection
- 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.)
- Pending
Links
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 238000003466 welding Methods 0.000 claims abstract description 97
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 21
- 238000001816 cooling Methods 0.000 claims description 7
- 238000009792 diffusion process Methods 0.000 claims description 7
- 229910000679 solder Inorganic materials 0.000 claims 1
- 238000005452 bending Methods 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 239000011888 foil Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/001—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by extrusion or drawing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/24—Preliminary treatment
-
- 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
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
-
- 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
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/514—Methods for interconnecting adjacent batteries or cells
- H01M50/516—Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
-
- 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
Abstract
The application discloses a preparation method of a flexible connection polar plate. The preparation method comprises the following steps: providing a blank of a soft connection polar plate, wherein the blank comprises a plurality of welding areas and a soft area for soft connection between two adjacent welding areas; and simultaneously performing a welding operation on the welding area. In the technical scheme, the welding equipment is adopted to simultaneously weld a plurality of welding areas of the blank of the flexible connection polar plate, so that the welding operation time is shortened, and the production efficiency is improved.
Description
Technical Field
The application relates to the technical field of battery assembly, in particular to a preparation method of a soft connection polar plate.
Background
With the national multi-dimensional incentive policy, the new energy industry develops at a high speed, and the power battery technology is continuously updated. The lithium battery occupies an important position in the new energy industry, and has the advantages of various lithium battery materials, high energy conversion ratio, safe and pollution-free actual use, cyclic use, long service life and the like, so that the lithium battery is widely used in various industries, such as the fire explosion new energy automobile industry.
In the related technology, a flexible connection polar plate processing mode adopts zone welding, welding of a first part of welding zones is completed firstly, and welding of all welding zones is completed in sequence; or the two parts of the semi-finished product soft connection product after welding are welded for the second time by adopting sectional welding, and the secondary welding area is fixed by screw thread connection or other connection methods to prevent falling off. Meanwhile, because the multi-station simultaneous welding equipment matched with the existing market is in a non-calibration system, the manufacturing difficulty is high, the cost is high, and the multi-type batch production is difficult to realize.
The defects result in long welding time, long processing procedure, low production efficiency, high energy consumption and high manufacturing cost of the processing mode of the flexible connection polar plate.
Disclosure of Invention
In view of this, the present application provides a method for manufacturing a flexible connection electrode plate, which can effectively improve production efficiency.
The application provides a preparation method of a soft connection polar plate, which comprises the following steps:
providing a blank of a soft connection plate, wherein the blank comprises a plurality of welding areas and a soft area connecting two adjacent welding areas;
and simultaneously performing welding operation on the welding area and the soft area.
Optionally, the lands are equipped with infrared laser sensors.
Optionally, the soft zone is equipped with a jet cooling desuperheating device.
Optionally, the welding is performed by thermocompression welding, molecular diffusion welding, arc welding or ultrasonic welding.
Optionally, the welding equipment used for welding is a full-automatic diffusion welding machine.
Optionally, the weld is configured with a through hole.
According to the preparation method of the flexible connection polar plate, the welding equipment is adopted to weld a plurality of welding areas of the blank of the flexible connection polar plate at the same time, so that the welding operation time is shortened, and the production efficiency is improved.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic front view of a flexible connection plate according to an embodiment of the present disclosure.
Fig. 2 is a schematic structural diagram of a front soft region of a soft connection plate according to an embodiment of the present application.
Fig. 3 is a schematic diagram of a front surface bonding pad structure of a flexible connection plate according to an embodiment of the present application.
Fig. 4 is a schematic diagram of a front surface slotting structure of a flexible connection plate according to an embodiment of the present application. .
Wherein the elements in the figures are identified as follows:
01-a welding area; 02-soft zone; 0101-first weld zone; 0102-second weld zone; 0103-third weld zone; 0104-fourth weld zone; 0105-fifth weld zone; 0201-first arc bending area; a second arcuate bend region 0202; 0203-third arc bending area; 0204-Right Angle bend region.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all 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 application.
In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
Referring to fig. 1 to 4, an embodiment of the present application provides a method for preparing a soft connection plate, including:
providing a blank of a flexible connection polar plate, wherein the blank comprises a plurality of welding areas and a flexible area for flexibly connecting two adjacent welding areas;
and simultaneously carrying out welding operation on the welding areas.
Note that, as the material of the blank, a metal foil such as copper, aluminum, titanium alloy, or the like may be selected, and the blank is processed and cut into a thin sheet by a machine, shaped, surface-cleaned, and welded to obtain a desired flexible connection electrode plate.
Here, the welding method is not limited to thermocompression welding, molecular diffusion welding, arc welding, ultrasonic welding, etc., the thickness of the metal foil is not limited, and the number of layers of the thin sheets is not limited, but the rated condition and the limit condition of the welding equipment need to be considered.
Referring again to fig. 1-4, the operation of the present application for the preparation of a flexible connection plate will now be described with respect to a common application scenario. It should be noted that this common embodiment is not to be taken as an identification basis for understanding the essential features of the technical problem to be solved as claimed in the present application, which is merely exemplary.
The specific process of assembling the flexible connection polar plate is as follows:
the aluminum foil is cut into thin sheets by an aluminum foil cutting machine, and the thin sheets are shaped, cleaned and stacked layer by layer. The aluminum sheet was placed in a welding apparatus.
And inputting the number of the working welding pressure heads and working parameters (such as temperature, pressure and the like) into the welding equipment control host, and starting the equipment.
The welding area 01 is composed of a first welding area 0101, a second welding area 0102, a third welding area 0103, a fourth welding area 0104, a fifth welding area 0105 and the like, and is welded simultaneously under the action of the temperature and pressure of a welding pressure head.
In the welding process, the infrared laser sensor monitors parameters such as temperature and pressure of a welding area 01 in real time and synchronously adjusts welding parameters; the air-jet cooling device cools the soft zone 02 in real time to assist in completing welding.
And taking out the welded workpiece, and naturally cooling or artificially cooling. And (5) performing finish machining and cleaning on the cooled workpiece to obtain the demanded flexible connection pole plate.
In a typical embodiment, compared with the traditional welding equipment for the soft connection products, the present application example adopts a customized full-automatic diffusion welding machine for welding.
The multi-station welding soft connection polar plate body is shown in figure 1 and comprises a welding area 01 and a soft area 02.
The welding area 01 is a welding area; the soft area 02 is an unwelded area, that is, an active area for soft connection of the pole plate, that is, a first arc-shaped bending area 0201, a second arc-shaped bending area 0202, a third arc-shaped bending area 0203, and a right-angle bending area 0204 shown in fig. 2. As shown in fig. 3, the first welding area 0101, the second welding area 0102, the third welding area 0103, the fourth welding area 0104, and the fifth welding area 0105 are welded to the battery cell in a matching manner, and the fifth welding area 0105 is used for other processes of battery preparation.
In the implementation process of the application, the welding diffusion contact area is extended under the action of high welding temperature and high pressure due to the fact that the spacing distance between the welding area 01 and the welding area 01 (the soft area 02) is small. If any parameter deviation such as temperature, pressure, cooling in the welding process, it is very likely to lead to soft zone 02 mistake welding, and then lead to the product to scrap. Therefore, a plurality of infrared laser sensors are additionally arranged in the welding area 01 of the welding equipment, and the parameters such as temperature, pressure and the like are accurately controlled.
In the welding process is implemented in the application, the soft area 02 needs to be monitored in real time, and particularly, the fluctuation of parameters such as temperature and pressure can greatly affect the soft area 02, so that the product can be scrapped. Therefore, the air injection cooling equipment is additionally arranged in the soft area 02 of the welding equipment, and the danger of mistaken welding of the soft area 02 is prevented.
In this application implementation welding process, the welding equipment pressure head can be according to accurate complicated control procedure, the work of control welding pressure head, the welding pressure head quantity that also can control the input.
In the implementation process of the application, the processing environment meets the high requirements of constant temperature and humidity, cleanness, dustless and smokeless fog and the like.
It should be understood that the above examples of the present application include, but are not limited to, illustrations of the methods and techniques of processing of the present application, which are intended primarily for understanding and preparation.
In a typical embodiment, the above-mentioned plate structure of the preferred embodiment of the present application is only illustrated in this example, and the shape and structure thereof can be made according to actual requirements.
In an exemplary embodiment, the number of the regions of the plate bonding area 01 and the soft area 02 is not limited to the number in this example, and may be reduced or increased according to the actual design.
In a typical embodiment, the electrode plate soldering zone slotting position 03 of the preferred embodiment of the present application, as shown in fig. 4, is not limited in shape and can be made according to actual requirements, and the slotting 03 is designed to mainly match with the electrolyte permeation flow of the battery and can be expanded to be an internal exhaust position of the battery, so as to avoid the problems of slow electrolyte permeation, limited exhaust and the like of the traditional hard-connected electrode plate.
In an exemplary embodiment, the electrode pad lands 01 of the preferred embodiment of the present invention may be used in combination with a cylindrical battery, a square-can battery, a pouch battery, etc. Preferably, the plates of the preferred embodiment may not be limited to the number of cells and types of cells to be mated.
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 changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (6)
1. A method for preparing a flexible connection polar plate is characterized by comprising the following steps:
providing a blank of a soft connection polar plate, wherein the blank comprises a plurality of welding areas and a soft area for soft connection between two adjacent welding areas;
and simultaneously performing a welding operation on the welding area.
2. The method of manufacturing of claim 1, wherein the lands are equipped with infrared laser sensors.
3. The method of claim 1, wherein the soft zone is equipped with a jet cooling device.
4. The method of claim 1, wherein the welding is performed by thermocompression welding, molecular diffusion welding, arc welding, or ultrasonic welding.
5. The manufacturing method according to claim 1, wherein the welding equipment used for welding is a fully automatic diffusion welding machine.
6. The method of manufacturing of claim 1, wherein the solder is configured with through holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210522148.6A CN114871558A (en) | 2022-05-13 | 2022-05-13 | Preparation method of flexible connection polar plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210522148.6A CN114871558A (en) | 2022-05-13 | 2022-05-13 | Preparation method of flexible connection polar plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114871558A true CN114871558A (en) | 2022-08-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210522148.6A Pending CN114871558A (en) | 2022-05-13 | 2022-05-13 | Preparation method of flexible connection polar plate |
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| CN (1) | CN114871558A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006137746A1 (en) * | 2005-06-24 | 2006-12-28 | Renewable Energy Corporation Asa | Stress relieving ribbons |
| CN104157823A (en) * | 2014-08-26 | 2014-11-19 | 深圳市科达利实业股份有限公司 | Soft connecting piece used for power battery and processing method thereof |
| CN105679987A (en) * | 2016-03-21 | 2016-06-15 | 广东莫莱卡焊接科技有限公司 | Flexible connecting board for power battery and machining method for soft connecting board |
| CN110449723A (en) * | 2019-08-30 | 2019-11-15 | 东莞市万连实业有限公司 | The disposable welding shaping method that the aluminium foil of different-thickness is flexible coupling |
| CN110561043A (en) * | 2019-08-30 | 2019-12-13 | 东莞市万连实业有限公司 | Dislocation welding method for flexible connection part of aluminum foil flexible connection |
| CN110788440A (en) * | 2019-09-27 | 2020-02-14 | 宁波奥克斯电气股份有限公司 | Welding temperature control method |
| CN110883505A (en) * | 2019-08-30 | 2020-03-17 | 东莞市万连实业有限公司 | Multipoint aluminum-nickel simultaneous welding method |
| CN111570986A (en) * | 2020-05-18 | 2020-08-25 | 东莞市精维电气科技有限公司 | Metal foil flexible connection welding process and metal foil flexible connection welding equipment |
-
2022
- 2022-05-13 CN CN202210522148.6A patent/CN114871558A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006137746A1 (en) * | 2005-06-24 | 2006-12-28 | Renewable Energy Corporation Asa | Stress relieving ribbons |
| CN104157823A (en) * | 2014-08-26 | 2014-11-19 | 深圳市科达利实业股份有限公司 | Soft connecting piece used for power battery and processing method thereof |
| CN105679987A (en) * | 2016-03-21 | 2016-06-15 | 广东莫莱卡焊接科技有限公司 | Flexible connecting board for power battery and machining method for soft connecting board |
| CN110449723A (en) * | 2019-08-30 | 2019-11-15 | 东莞市万连实业有限公司 | The disposable welding shaping method that the aluminium foil of different-thickness is flexible coupling |
| CN110561043A (en) * | 2019-08-30 | 2019-12-13 | 东莞市万连实业有限公司 | Dislocation welding method for flexible connection part of aluminum foil flexible connection |
| CN110883505A (en) * | 2019-08-30 | 2020-03-17 | 东莞市万连实业有限公司 | Multipoint aluminum-nickel simultaneous welding method |
| CN110788440A (en) * | 2019-09-27 | 2020-02-14 | 宁波奥克斯电气股份有限公司 | Welding temperature control method |
| CN111570986A (en) * | 2020-05-18 | 2020-08-25 | 东莞市精维电气科技有限公司 | Metal foil flexible connection welding process and metal foil flexible connection welding equipment |
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Application publication date: 20220809 |
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