CN105679987A - Flexible connecting board for power battery and machining method for soft connecting board - Google Patents
Flexible connecting board for power battery and machining method for soft connecting board Download PDFInfo
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- CN105679987A CN105679987A CN201610165995.6A CN201610165995A CN105679987A CN 105679987 A CN105679987 A CN 105679987A CN 201610165995 A CN201610165995 A CN 201610165995A CN 105679987 A CN105679987 A CN 105679987A
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- welding
- metal foil
- connecting plate
- power battery
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000003754 machining Methods 0.000 title abstract description 5
- 238000003466 welding Methods 0.000 claims abstract description 108
- 239000011888 foil Substances 0.000 claims abstract description 81
- 229910052751 metal Inorganic materials 0.000 claims abstract description 72
- 239000002184 metal Substances 0.000 claims abstract description 72
- 239000000758 substrate Substances 0.000 claims abstract description 12
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 9
- 239000010935 stainless steel Substances 0.000 claims abstract description 9
- 238000004080 punching Methods 0.000 claims abstract description 3
- 238000003672 processing method Methods 0.000 claims description 14
- 229910000679 solder Inorganic materials 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 239000011889 copper foil Substances 0.000 claims description 7
- 239000007769 metal material Substances 0.000 claims description 6
- 239000010953 base metal Substances 0.000 claims description 5
- 238000009792 diffusion process Methods 0.000 claims description 5
- 239000010445 mica Substances 0.000 claims description 5
- 229910052618 mica group Inorganic materials 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 239000011224 oxide ceramic Substances 0.000 claims description 4
- 229910052574 oxide ceramic Inorganic materials 0.000 claims description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000001788 irregular Effects 0.000 claims description 3
- 238000003475 lamination Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 229910001039 duplex stainless steel Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- B23K20/02—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of a press ; Diffusion bonding
- B23K20/023—Thermo-compression bonding
-
- 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
- B23K20/02—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of a press ; Diffusion bonding
- B23K20/023—Thermo-compression bonding
- B23K20/026—Thermo-compression bonding with diffusion of soldering material
-
- 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
- B23K20/14—Preventing or minimising gas access, or using protective gases or vacuum during welding
-
- 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
- B23K20/16—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating with interposition of special material to facilitate connection of the parts, e.g. material for absorbing or producing gas
-
- 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
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/18—Sheet panels
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
- B23K2101/38—Conductors
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention provides a flexible connecting board for a power battery and a machining method for the flexible connecting board. The metal foil of the flexible connecting board adopts special-shaped metal foil; the welding strength of a welding region is the same as that of the base material of the special-shaped metal foil; a non-welding region is formed by applying force to a substrate through special stainless steel; the machining method comprises the steps of enabling multiple layers of special-shaped metal foils to be laminated in vacuum welding equipment to be welded to form the welding region; punching the welding region to form connecting holes; and applying force to the laminated multiple layers of special-shaped metal foils through the special stainless steel to form the non-welding region. Compared with the prior art, the flexible connecting board for the power battery and the machining method for the flexible connecting board provided by the invention can strengthen the connection reliability of the power battery, improve the safety of the single power batteries and modules in series connection and parallel connection, and save the connecting space.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a flexible connecting plate for a power battery and a processing method thereof.
Background
The power battery is an important component of the new energy battery, the connection mode of the battery is an important component of the power battery, and the connection of the battery is used for leading out current. General new energy automobile power battery and module are connected the full stereoplasm connecting plate that uses and are had two drawbacks, and firstly at the car in-process of traveling, the welding between full stereoplasm connecting plate and battery cell or the battery module lacks effectual protection, because the vibration that lasts influences, the welding position lasts the atress, has the risk that the welding became invalid, leads to the battery combination unusual. Secondly, in the assembly process of large-scale single batteries and battery modules, because the consistency of the single power batteries has a certain range of tolerance, the single batteries or the battery modules which need to be connected are deviated from the original positioning holes of the full-hard connecting plates when the battery modules are assembled, so that the automatic production of the battery modules is influenced. Meanwhile, a single battery or a battery module can be separated from the whole battery system, so that the voltage of the battery system is insufficient, even accidental short circuit occurs, and safety accidents are triggered.
Therefore, it is desirable to provide a connection plate having a high reliability connection, saving a connection space of a battery cell or a battery module, and improving connection safety.
Disclosure of Invention
In order to meet the requirements of the prior art, the invention provides a flexible connecting plate for a power battery and a processing method thereof.
The technical scheme of the soft connecting plate for the power battery provided by the invention is as follows:
the flexible connection board comprises a substrate formed by metal foil lamination, a welding area and a non-welding area are arranged on the substrate, a connection hole is arranged in the welding area, the power battery comprises a battery monomer or a battery module, and the battery module comprises at least two battery monomers;
the metal foil is a special-shaped metal foil, and the special-shaped metal foil adopts an aluminum foil or a copper foil with the thickness of 0.01 mm-0.15 mm;
the welding strength of the welding area is the same as the strength of the base metal of the special-shaped metal foil;
the non-welding area is formed by pressing the substrate by special stainless steel.
The invention provides a preferred embodiment as follows: the special-shaped metal foil comprises a strip-shaped metal foil, an S-shaped metal foil or a Z-shaped metal foil.
The invention provides a preferred embodiment as follows: the special-shaped metal foil is a metal foil with an irregular shape.
The invention provides a preferred embodiment as follows: the flexible connecting plate further comprises a conductive terminal, and the conductive terminal is arranged on the welding area through laser welding.
The invention provides a processing method of a soft connecting plate for a power battery, which adopts the technical scheme that:
at a vacuum degree of 5 × 10-4～6×10-3Welding metal foils in the welding equipment of Pa to form a welding area of the soft connecting plate; punching the welding area to form a connecting hole;
and applying pressure of 1-20 MPa to the stacked metal foil through special stainless steel to form a non-welding area of the flexible connecting plate.
The invention provides a preferred embodiment as follows:
when the metal foil is aluminum foil, the vacuum degree is 5 × 10-4～6×10-3Pa, wherein the pressure value is 2-20 MPa;
when the metal foil adopts copper foil, the vacuum degree is 8 × 10-4～6×10-3Pa, and the pressure value is 1-20 MPa.
The invention provides a preferred embodiment as follows: before welding the metal foils, placing a solder mask between the metal foils; the solder mask layer is made of high-melting-point non-metallic materials, and the high-melting-point non-metallic materials comprise aluminum oxide ceramics or mica sheets.
The invention provides a preferred embodiment as follows: the process of welding the metal foil includes heating the metal foil by a heat radiator.
The invention provides a preferred embodiment as follows: the welding metal foil adopts vacuum diffusion welding or vacuum pressure welding; the solder for vacuum diffusion welding and vacuum pressure welding comprises aluminum oxide ceramic or mica sheets.
The invention provides a preferred embodiment as follows: the welding apparatus includes a vacuum welding furnace.
Compared with the closest prior art, the invention has the beneficial effects that:
1. the flexible connecting plate for the power battery can enhance the connection reliability of the power battery, improve the safety of a single power battery and a module in the series-parallel connection process and save the connection space;
2. according to the flexible connecting plate for the power battery, the connection reliability of a power battery loop is improved, and the risk of poor welding in the assembly process of a power battery module is reduced;
3. the flexible connecting plate for the power battery is formed by vacuum welding multiple layers of metal foils, the strength of a welding area is the same as or close to that of a base metal, the foils of a non-welding area are physically separated, certain flexibility is achieved, and the effects of bending and twisting are achieved;
4. the soft connecting plate for the power battery has high welding strength of the welding area and does not have the phenomenon of separation of welding layers, and meanwhile, the connection of the connecting hole in the welding area and other connecting pieces in the vibration process is protected to be reliable and not easy to loosen by the non-welding area.
5. According to the flexible connecting plate for the power battery, the distribution positions of the non-welding areas can be set at will, simultaneous connection among connecting points in various position forms is met, the connection design space is saved, the capacity and the safety performance of a battery system can be effectively improved, and a key effect is played on development and technical improvement of the new energy automobile industry;
6. the processing method of the flexible connecting plate for the power battery, provided by the invention, adopts vacuum welding and heating through heat radiation in a re-welding process, so that the welding reliability is improved.
Drawings
FIG. 1: the side view of the soft connecting plate for the power battery in the embodiment of the invention;
FIG. 2: the invention discloses a top view of a flexible connecting plate for a power battery;
FIG. 3: the structure schematic diagram of the conductive terminal in the embodiment of the invention;
FIG. 4: the embodiment of the invention provides a processing method flow chart of a soft connecting plate for a power battery;
wherein, 1: a welding zone; 2: a non-welding area; 3: connecting holes; 4: and a conductive terminal.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.
The following describes a flexible connecting plate for a power battery and a processing method thereof according to an embodiment of the present invention, with reference to the accompanying drawings.
Fig. 1 is a side view of a flexible connecting plate for a power battery according to an embodiment of the present invention, and as shown in the drawing, the flexible connecting plate for a power battery cell and a module according to the embodiment includes a substrate laminated by multiple layers of metal foils, and a welding region 1 and a non-welding region 2 are disposed on the substrate. Wherein,
the metal foil is a special-shaped metal foil, and the special-shaped metal foil adopts an aluminum foil or a copper foil with the thickness of 0.01 mm-0.15 mm. In another preferred embodiment provided by the invention, the special-shaped metal foil can also adopt an aluminum foil or a copper foil with the thickness of 0.008 mm-0.01 mm.
The welding strength of the welding area 1 is the same as the strength of the base metal of the special-shaped metal foil, namely, the welded multi-layer special-shaped metal foil is completely combined into a whole and cannot be separated from each other by a physical method. The surface of the land 1 in the present embodiment is provided with a plating layer including any one of a silver plating layer or a nickel plating layer.
The non-welding area 2 is formed by applying pressure to the substrate through special stainless steel, and the multilayer special-shaped metal foils are physically separated and have certain flexibility. In the embodiment, the special stainless steel is duplex stainless steel consisting of 23% of chromium and 4% of nickel, or an Alloy alloy mainly containing 32Ni-21Cr-Ti and A1, or an Alloy alloy mainly containing 73Ni-15Cr-Ti and A1.
The welded regions 1 and the non-welded regions 2 in the present invention may be sequentially arranged on the substrate at equal intervals, or may be arranged on the substrate in an arbitrary order to meet the actual mounting requirements of the battery system. Meanwhile, the special-shaped metal foil can comprise any one of a strip-shaped metal foil, an S-shaped metal foil or a Z-shaped metal foil, and can also be an irregular-shaped metal foil so as to meet the actual installation requirement of the battery system.
It should be noted that the power battery module in the invention refers to a battery combination formed by connecting single power battery cells in series and parallel, and has a larger capacity or current voltage than that of a single power battery.
Fig. 2 is a top view of a flexible connecting plate for a power battery in an embodiment of the present invention, and as shown in the figure, a connecting hole 3 is provided in a welding region 1 of the flexible connecting plate for a power battery cell and a module in this embodiment, and is used for device connection. Meanwhile, the special-shaped metal foil is an S-shaped metal foil in this embodiment.
Fig. 3 is a schematic structural diagram of the conductive terminal in the embodiment of the present invention, and as shown in the drawing, the conductive terminal 4 is disposed on the welding area 1 of the flexible connecting plate for the power battery cell and the module in the embodiment. The conductive terminals 4 are connected through a laser welding technology, and based on the flexibility of the non-welding area 2, the laser welding effect of the conductive terminals 4 and the connecting holes 3 can be effectively protected, and the kinetic energy of the power battery system in the vibration process can be effectively absorbed.
Fig. 4 is a flowchart of a processing method of a flexible connecting plate for a power battery in an embodiment of the present invention, and as shown in the drawing, the processing method in this embodiment specifically includes the following steps:
step S101: the method comprises the following steps of cutting metal foils after cleaning according to the actual requirements of a power battery system, placing a solder mask between the special-shaped metal foils, stacking a plurality of layers of special-shaped metal foils on a welding fixture after the metal foils are placed, and placing the welding fixture in vacuum welding equipment for welding to form a welding area 1.
In the present embodiment, the vacuum degree of 5 × 10 is adopted for the welding equipment-4～6×10-3And the welding equipment Pa heats the multilayer special-shaped metal foil through a heat radiator in the welding process of the multilayer special-shaped metal foil, namely, other contact type heat conduction is not adopted. The solder mask layer is made of high-melting-point non-metallic materials, and the high-melting-point non-metallic materials comprise any one of alumina ceramics or mica sheets.
Step S102: the welded area is punched to form the connection hole 3.
Step S103: and (3) applying 1-20 MPa pressure to the stacked multilayer special-shaped metal foil through special stainless steel to form a non-welding area 2. The welding area 1 and the non-welding area 2 are cleaned and shaped respectively, and an electroplated layer can be arranged on the surface of the welding area for protection according to the installation requirement of the power battery system.
When the aluminum foil is adopted as the metal foil in this embodiment, the vacuum degree of the welding equipment is 5 × 10-4～6×10-3Pa, the pressure value of the formed non-welding area 2 is 2-20 MPa, and when the metal foil adopts copper foil, the vacuum degree of welding equipment is 8 × 10-4～6×10-3Pa, the pressure value of the non-welded area 2 is 1 to 20 MPa.
The welding of the multilayer special-shaped metal foil adopts any one of vacuum diffusion welding or vacuum pressure welding. The vacuum welding apparatus includes a vacuum welding furnace. Meanwhile, the invention only provides a preferred embodiment of the processing method of the flexible connecting plate for the power battery, and the sequence of the steps is not limited.
The processing method of the flexible connecting plate for the power battery in the embodiment of the invention is characterized in that the flexible connecting plate is formed by vacuum welding multiple layers of metal foils, the strength of a welding area is the same as or close to that of a base metal, and the foils of a non-welding area are physically separated, so that the flexible connecting plate has certain flexibility and can be bent and twisted. Because the welding strength of the welding area is high and no welding layer separation phenomenon exists, the connection of the connecting hole in the welding area and other connecting pieces in the vibration process is also protected by the non-welding area, and the connecting hole is not easy to loosen. The distribution positions of the non-welding areas can be randomly arranged, simultaneous connection among connection points in various position forms is met, the connection design space is saved, the capacity and the safety performance of a battery system can be effectively improved, and the key effect is played on development and technical improvement of the new energy automobile industry.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A soft connecting plate for a power battery comprises a substrate formed by metal foil lamination, wherein a welding area and a non-welding area are arranged on the substrate, and a connecting hole is formed in the welding area;
the metal foil is a special-shaped metal foil, and the special-shaped metal foil adopts an aluminum foil or a copper foil with the thickness of 0.01 mm-0.15 mm;
the welding strength of the welding area is the same as the strength of the base metal of the special-shaped metal foil;
the non-welding area is formed by pressing the substrate by special stainless steel.
2. The flexible connecting plate for power batteries according to claim 1, wherein the specially-shaped metal foil comprises a strip-shaped metal foil, an S-shaped metal foil or a Z-shaped metal foil.
3. The flexible connecting plate for power batteries according to claim 1, wherein the irregular metal foil is an irregular metal foil.
4. The flexible connecting plate for a power battery as claimed in claim 1, wherein the flexible connecting plate further comprises conductive terminals, and the conductive terminals are disposed on the welding area by laser welding.
5. A processing method of a soft connecting plate for a power battery is characterized in that,
at a vacuum degree of 5 × 10-4～6×10-3Welding metal foils in the welding equipment of Pa to form a welding area of the soft connecting plate; punching the welding area to form a connecting hole;
and applying pressure of 1-20 MPa to the stacked metal foil through special stainless steel to form a non-welding area of the flexible connecting plate.
6. The processing method of the soft connecting plate for the power battery as claimed in claim 5,
when the metal foil is aluminum foil, the vacuum degree is 5 × 10-4～6×10-3Pa, wherein the pressure value is 2-20 MPa;
when the metal foil adopts copper foil, the vacuum degree is 8 × 10-4～6×10-3Pa, and the pressure value is 1-20 MPa.
7. The processing method of the power battery soft connecting plate is characterized in that before welding the metal foils, a solder mask layer is arranged between the metal foils; the solder mask layer is made of high-melting-point non-metallic materials, and the high-melting-point non-metallic materials comprise aluminum oxide ceramics or mica sheets.
8. The method as claimed in claim 5, wherein the step of welding the metal foil includes heating the metal foil by a heat radiator.
9. The processing method of the soft connecting plate for the power battery as claimed in claim 5, wherein the welding metal foil adopts vacuum diffusion welding or vacuum pressure welding; the solder for vacuum diffusion welding and vacuum pressure welding comprises aluminum oxide ceramic or mica sheets.
10. The method for processing the flexible connecting plate for the power battery as claimed in claim 5, wherein the welding equipment comprises a vacuum welding furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610165995.6A CN105679987A (en) | 2016-03-21 | 2016-03-21 | Flexible connecting board for power battery and machining method for soft connecting board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610165995.6A CN105679987A (en) | 2016-03-21 | 2016-03-21 | Flexible connecting board for power battery and machining method for soft connecting board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105679987A true CN105679987A (en) | 2016-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610165995.6A Pending CN105679987A (en) | 2016-03-21 | 2016-03-21 | Flexible connecting board for power battery and machining method for soft connecting board |
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| CN (1) | CN105679987A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106956072A (en) * | 2017-04-06 | 2017-07-18 | 爱迪森自动化科技（昆山）有限公司 | A kind of connection method of diffusion welding (DW) laminated aluminium foil |
| CN110560877A (en) * | 2019-09-26 | 2019-12-13 | 镇江四洋特种金属材料制造有限公司 | Method for welding multi-layer aluminum and aluminum alloy strips |
| 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 |
| CN114871558A (en) * | 2022-05-13 | 2022-08-09 | 湖北钛时代新能源有限公司 | Preparation method of flexible connection polar plate |
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| CN101745736A (en) * | 2009-12-23 | 2010-06-23 | 西北工业大学 | Copper alloy and stainless diffusion welding method |
| CN203826470U (en) * | 2014-05-12 | 2014-09-10 | 杨醒超 | Welding piece for combining batteries |
| 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 |
| WO2015146976A1 (en) * | 2014-03-25 | 2015-10-01 | 旭化成ケミカルズ株式会社 | Connecting member between positive and negative electrode terminals of battery |
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2016
- 2016-03-21 CN CN201610165995.6A patent/CN105679987A/en active Pending
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| CN106956072A (en) * | 2017-04-06 | 2017-07-18 | 爱迪森自动化科技（昆山）有限公司 | A kind of connection method of diffusion welding (DW) laminated aluminium foil |
| CN106956072B (en) * | 2017-04-06 | 2019-11-26 | 哈尔滨工大华策科技有限公司 | A kind of connection method of diffusion welding (DW) laminated aluminium foil |
| 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 |
| CN110560877A (en) * | 2019-09-26 | 2019-12-13 | 镇江四洋特种金属材料制造有限公司 | Method for welding multi-layer aluminum and aluminum alloy strips |
| CN110560877B (en) * | 2019-09-26 | 2021-07-06 | 镇江四洋特种金属材料制造有限公司 | Method for welding multi-layer aluminum and aluminum alloy strips |
| CN114871558A (en) * | 2022-05-13 | 2022-08-09 | 湖北钛时代新能源有限公司 | Preparation method of flexible connection polar plate |
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