CN114122631A - Preparation method of novel cell electrode switching sheet - Google Patents
Preparation method of novel cell electrode switching sheet Download PDFInfo
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- CN114122631A CN114122631A CN202111426379.9A CN202111426379A CN114122631A CN 114122631 A CN114122631 A CN 114122631A CN 202111426379 A CN202111426379 A CN 202111426379A CN 114122631 A CN114122631 A CN 114122631A
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- cell electrode
- sheet
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- electrode adapter
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- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 238000005452 bending Methods 0.000 claims abstract description 63
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229910052802 copper Inorganic materials 0.000 claims abstract description 29
- 239000010949 copper Substances 0.000 claims abstract description 29
- 238000000137 annealing Methods 0.000 claims abstract description 28
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 25
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000007493 shaping process Methods 0.000 claims abstract description 13
- 238000004140 cleaning Methods 0.000 claims abstract description 8
- 238000005520 cutting process Methods 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 239000011265 semifinished product Substances 0.000 claims description 28
- 238000001816 cooling Methods 0.000 claims description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000004321 preservation Methods 0.000 claims description 12
- 238000004080 punching Methods 0.000 claims description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 238000002161 passivation Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 239000002356 single layer Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
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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
- H01M50/531—Electrode connections inside a battery casing
- H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
-
- 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
- H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
-
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a preparation method of a novel battery cell electrode switching piece, which comprises the steps of material preparation, pre-shaping of a bending part, thinning of the bending part, appearance cutting, 90-degree bending, surface cleaning, annealing softening and the like. The preparation process is simple, the hard copper sheet or aluminum sheet achieves the effect of soft connection by using hardware stamping and annealing softening processes, the material is not required to be laminated and welded, the structure of the product can be greatly simplified, the automatic production is easy to realize, and the cost is greatly reduced.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a preparation method of a novel cell electrode patch.
Background
In the production process of lithium batteries such as square-shell batteries, the positive electrode or the negative electrode of the battery needs to be connected with a cover plate of the battery through an adapter plate. During specific operation, the switching piece needs to be folded into a 90-degree right angle, one side of the switching piece is welded with the positive electrode or the negative electrode of the battery, one side of the switching piece is welded with the pole of the cover plate, after welding is completed, the two sides of the switching piece need to be folded by 180 degrees, and the switching piece can be accommodated between the battery and the cover plate in a parallel manner.
The traditional positive and negative pole switching piece of the battery core in the square shell battery is generally formed by directly bending a metal sheet, and after the switching piece is folded by 180 degrees, the bending part can crack, so that the performance and the quality of a product are influenced. In order to solve the problem, some cell positive and negative pole connection pieces with arc-shaped soft connection parts are also appeared on the market at present, and are generally formed by stacking multiple layers of metal foils with the thickness of 0.1mm or 0.2mm and performing diffusion welding by using ultrasonic waves or high molecules. However, the positive and negative pole switching piece of the battery core has the following defects: 1. a welding link is needed, so that the cost is higher; 2. after 90 degrees bending, the edges of the product may be uneven; 3. after being folded by 180 degrees, the stress at the bending part of the product always exists, the bending process still has certain difficulty, and the consistency is poor; 4. the product is welded by ultrasonic waves, the surface is uneven, in addition, ultrasonic welding and laser welding can be carried out when the product is assembled at a client, and certain difficulty is increased in the operation process.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a preparation method of a novel cell electrode patch.
In order to achieve the above object, a first aspect of the present invention provides a method for preparing a novel cell electrode interposer, where the cell electrode interposer includes a first connection region, a second connection region, and an arc-shaped bending region connected between the first connection region and the second connection region, and the method includes the following steps:
(1) preparing materials: preparing a single-layer copper sheet or aluminum sheet with a preset thickness;
(2) pre-shaping a bending part: pre-punching the initial shape of the arc-shaped bending area of the cell electrode adapter sheet on the surface of the copper sheet or the aluminum sheet through a pre-shaping die;
(3) and thinning a bending part: under the condition of ensuring the overcurrent capacity of the cell electrode adapter plate, the thickness of the arc-shaped bending area of the cell electrode adapter plate is thinned through a thinning mold, so that the thickness of the arc-shaped bending area is smaller than the thickness of the first connection area and the second connection area;
(4) and (3) cutting the appearance: placing the copper sheet or the aluminum sheet processed in the step (3) into a punching die, and punching the appearance of the cell electrode adapter sheet when the cell electrode adapter sheet is tiled;
(5) bending by 90 degrees: putting the copper sheet or the aluminum sheet processed in the step (4) into a bending die, and enabling an included angle between a first connecting area and a second connecting area of the cell electrode adapter sheet to form 90 degrees to obtain a cell electrode adapter sheet semi-finished product;
(6) surface cleaning: cleaning the surface of the semi-finished product of the cell electrode adapter plate, and then drying the semi-finished product;
(7) annealing and softening: and (4) putting the semi-finished product of the cell electrode adapter sheet processed in the step (6) into a vacuum annealing furnace for vacuum annealing treatment, so that the hardness of the arc-shaped bending area of the cell electrode adapter sheet is reduced, and the stress of the arc-shaped bending area of the cell electrode adapter sheet is reduced. Preferably, the shape of the cell electrode adaptor sheet when being tiled is set to be L-shaped.
Preferably, when the cell electrode patch is made of a copper material, the thicknesses of the first connecting area and the second connecting area are respectively set to be 0.3mm to 0.5mm, and the thickness of the arc-shaped bending area after thinning is set to be 0.2mm to 0.3 mm.
Preferably, when the cell electrode adaptor sheet is made of aluminum, the thicknesses of the first connection area and the second connection area are respectively set to be 0.5mm to 0.7mm, and the thickness of the arc-shaped bending area after thinning is set to be 0.3mm to 0.4 mm.
Preferably, when the cell electrode interposer is made of a copper material, the step (7) specifically includes the following steps:
(71) placing the semi-finished product of the cell electrode adapter plate processed in the step (6) into a vacuum annealing furnace for preheating treatment, wherein in the preheating treatment stage, the heating time is 100-150 min, the heat preservation temperature is 480-520 ℃, and the heat preservation time is 50-70 min;
(72) continuously heating for 40-60 min to 530-560 ℃ and keeping the temperature for 200-250 min;
(73) and (5) cooling the semi-finished product of the cell electrode adapter sheet processed in the step (72) in a nitrogen cooling mode, wherein the cooling time is 50-70 min.
Preferably, when the cell electrode interposer is made of an aluminum material, the step (7) specifically includes the following steps:
(71) placing the semi-finished product of the cell electrode adapter plate processed in the step (6) into a vacuum annealing furnace for preheating treatment, wherein in the preheating treatment stage, the heating time is 70-100 min, the heat preservation temperature is 450-470 ℃, and the heat preservation time is 50-70 min;
(72) continuously heating for 40-60 min to 480-500 deg.c for 200-250 min;
(73) and (5) cooling the semi-finished product of the cell electrode adapter sheet processed in the step (72) in a nitrogen cooling mode, wherein the cooling time is 50-70 min.
Preferably, when the cell electrode adapter sheet is made of copper material, after the cell electrode adapter sheet is subjected to vacuum annealing treatment, the hardness of the arc-shaped bending area of the cell electrode adapter sheet is controlled to be 35-45 HV0.2。
Preferably, when the cell electrode adaptor sheet is made of aluminum material, after the cell electrode adaptor sheet is subjected to vacuum annealing treatment, the hardness of the arc-shaped bending area of the cell electrode adaptor sheet is controlled to be 19-23 HV0.2。
Preferably, when the cell electrode patch is made of a copper material, the preparation method further comprises the following steps:
(8) passivation: and passivating the semi-finished product of the battery cell electrode adapter plate subjected to annealing treatment.
The second aspect of the invention provides a novel cell electrode patch, which is prepared by the preparation method of the novel cell electrode patch.
Compared with the prior art, the invention has the beneficial effects that:
under the condition of ensuring the overcurrent capacity of a product, the arc-shaped bending area of the cell electrode adapter sheet is thinned to a certain degree, annealing softening treatment is carried out after the cell electrode adapter sheet is bent for 90 degrees, and stress is removed, so that the bending hardness of the cell electrode adapter sheet is reduced to a proper degree, the cell electrode adapter sheet is easy to operate when bent for 180 degrees, the consistency is good, and the bent part is not cracked.
The preparation process is simple, the hard copper sheet or aluminum sheet achieves the effect of soft connection by using hardware stamping and annealing softening processes, the material is not required to be laminated and welded, the structure of the product can be greatly simplified, the automatic production is easy to realize, and the cost is greatly reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a novel cell electrode interposer provided in an embodiment of the present invention when the interposer is tiled.
Fig. 2 is a schematic structural diagram of the novel cell electrode interposer provided in the embodiment of the present invention, when bent by 90 degrees;
fig. 3 is a schematic structural diagram of the novel cell electrode interposer provided in the embodiment of the present invention, when bent by 180 degrees;
fig. 4 is a schematic structural diagram (double station) of a pre-shaping mold provided in an embodiment of the present invention;
fig. 5 is a schematic structural diagram (double stations) of the thinning mold provided by the embodiment of the present invention;
fig. 6 is a schematic structural diagram of a bending die provided in an embodiment of the present invention.
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.
Referring to fig. 1, an embodiment of the present invention provides a novel cell electrode interposer, including a first connection region 1, a second connection region 2, and an arc-shaped bending region 3, where the arc-shaped bending region 3 is connected between the first connection region 1 and the second connection region 2.
As shown in fig. 2, when the novel cell electrode interposer is manufactured, an included angle between the first connection region 1 and the second connection region 2 is 90 degrees, and at this time, the first connection region 1 and the second connection region 2 may be welded to a cover plate of a battery and a positive electrode or a negative electrode of the battery, respectively. As shown in fig. 3, after the welding is completed, the first connection region 1 and the second connection region 2 of the cell electrode interposer need to be folded by 180 degrees and parallel, so that the interposer can be accommodated between the battery and the cover plate.
During specific preparation, the cell electrode patch can be made of copper materials such as copper sheets and the like or aluminum materials such as aluminum sheets and the like.
The preparation method of the novel cell electrode patch comprises the following steps:
(1) preparing materials: preparing a single-layer copper sheet or aluminum sheet with a preset thickness;
(2) pre-shaping a bending part: pre-punching the initial shape of the arc-shaped bending area of the cell electrode adapter sheet on the surface of the copper sheet or the aluminum sheet through a pre-shaping die;
as shown in fig. 4, the pre-shaping mold may be installed on a punching machine, an upper mold 10 of the pre-shaping mold may be provided with an arc-shaped male mold 12 corresponding to the shape of the arc-shaped bending region 3, a lower mold 11 of the pre-shaping mold may be provided with an arc-shaped female mold 13 corresponding to the shape of the arc-shaped bending region 3, and the pre-shaping mold may press one, two, four or more cell electrode adaptor sheets at a time.
The initial shape of the arc-shaped bending area of the cell electrode adapter sheet is pressed out in advance, so that the thinning operation of the arc-shaped bending area is facilitated.
(3) And thinning a bending part: under the condition of ensuring the overcurrent capacity of the cell electrode adapter plate, the thickness of the arc-shaped bending area of the cell electrode adapter plate is thinned through a thinning mold, so that the thickness of the arc-shaped bending area is smaller than the thickness of the first connection area and the second connection area;
when the battery cell electrode adapter sheet is made of copper materials, the thicknesses of the first connecting area and the second connecting area can be set to be 0.3-0.5 mm, preferably 0.4mm, and the thickness of the arc-shaped bending area after thinning can be set to be 0.2-0.3 mm, preferably 0.25 mm.
When the cell electrode patch is made of aluminum material, the thicknesses of the first connecting area and the second connecting area can be respectively set to be 0.5 mm-0.7 mm, preferably 0.6mm, and the thickness of the arc-shaped bending area after thinning can be set to be 0.3 mm-0.4 mm, preferably 0.4 mm.
As shown in fig. 5, the thinning mold may be installed on a punching machine, an upper mold 20 of the thinning mold may be provided with a punching male mold 22 corresponding to the shape of the arc-shaped bending region 3, a lower mold 21 of the pre-shaping mold may be provided with an arc-shaped female mold 23 corresponding to the shape of the arc-shaped bending region 3, and the thinning mold may press one, two, four or more cell electrode adaptor sheets at a time.
(4) And (3) cutting the appearance: placing the copper sheet or the aluminum sheet processed in the step (3) into a punching die, and punching the appearance of the cell electrode adapter sheet when the cell electrode adapter sheet is tiled;
as shown in fig. 1, the cell electrode interposer may be L-shaped when laid flat.
(5) Bending by 90 degrees: putting the copper sheet or the aluminum sheet processed in the step (4) into a bending die, and enabling an included angle between a first connecting area and a second connecting area of the cell electrode adapter sheet to form 90 degrees to obtain a cell electrode adapter sheet semi-finished product;
as shown in fig. 6, the bottom of the upper mold 30 of the bending mold may be provided with a substantially V-shaped bending punch 32, and the lower mold 31 of the bending mold may be provided with a substantially V-shaped positioning groove 33.
(6) Surface cleaning: cleaning the surface of the semi-finished product of the cell electrode adapter plate, and then drying the semi-finished product;
the surface cleaning treatment can remove oil stains and sundries on the surface of the semi-finished product of the battery cell electrode adapter sheet, and the appearance of the product cannot be influenced.
(7) Annealing and softening: and (4) putting the semi-finished product of the cell electrode adapter sheet processed in the step (6) into a vacuum annealing furnace for vacuum annealing treatment, so that the hardness of the arc-shaped bending area of the cell electrode adapter sheet is reduced, and the stress of the arc-shaped bending area of the cell electrode adapter sheet is reduced.
When the cell electrode interposer is made of a copper material, the step (7) may specifically include the following steps:
(71) placing the semi-finished product of the cell electrode adapter plate processed in the step (6) into a vacuum annealing furnace for preheating treatment, wherein in the preheating treatment stage, the heating time is 100-150 min, the heat preservation temperature is 480-520 ℃, and the heat preservation time is 50-70 min;
(72) continuously heating for 40-60 min to 530-560 ℃ and keeping the temperature for 200-250 min;
(73) and (5) cooling the semi-finished product of the cell electrode adapter sheet processed in the step (72) in a nitrogen cooling mode, wherein the cooling time is 50-70 min.
When the cell electrode adapter sheet is made of copper material, after the cell electrode adapter sheet is subjected to vacuum annealing treatment, the hardness of the arc-shaped bending area of the cell electrode adapter sheet is controlled to be 35-45 HV0.2Wherein the hardness of the product can be measured by a vickers hardness tester.
And when the cell electrode adapter sheet is made of an aluminum material, the step (7) specifically comprises the following steps:
(71) placing the semi-finished product of the cell electrode adapter plate processed in the step (6) into a vacuum annealing furnace for preheating treatment, wherein in the preheating treatment stage, the heating time is 70-100 min, the heat preservation temperature is 450-470 ℃, and the heat preservation time is 50-70 min;
(72) continuously heating for 40-60 min to 480-500 deg.c for 200-250 min;
(73) and (5) cooling the semi-finished product of the cell electrode adapter sheet processed in the step (72) in a nitrogen cooling mode, wherein the cooling time is 50-70 min.
When the cell electrode adapter sheet is made of aluminum material, after the cell electrode adapter sheet is subjected to vacuum annealing treatment, the hardness of the arc-shaped bending area of the cell electrode adapter sheet is controlled to be 19-23 HV0.2。
Preferably, when the cell electrode patch is made of a copper material, the preparation method further comprises the following steps:
(8) passivation: and passivating the semi-finished product of the battery cell electrode adapter plate subjected to annealing treatment.
Wherein, the passivation treatment can protect the copper cell electrode adapter plate from being corroded easily.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. The preparation method of the novel cell electrode patch comprises a first connection area, a second connection area and an arc bending area connected between the first connection area and the second connection area, and is characterized by comprising the following steps:
(1) preparing materials: preparing a single-layer copper sheet or aluminum sheet with a preset thickness;
(2) pre-shaping a bending part: pre-punching the initial shape of the arc-shaped bending area of the cell electrode adapter sheet on the surface of the copper sheet or the aluminum sheet through a pre-shaping die;
(3) and thinning a bending part: under the condition of ensuring the overcurrent capacity of the cell electrode adapter plate, the thickness of the arc-shaped bending area of the cell electrode adapter plate is thinned through a thinning mold, so that the thickness of the arc-shaped bending area is smaller than the thickness of the first connection area and the second connection area;
(4) and (3) cutting the appearance: placing the copper sheet or the aluminum sheet processed in the step (3) into a punching die, and punching the appearance of the cell electrode adapter sheet when the cell electrode adapter sheet is tiled;
(5) bending by 90 degrees: putting the copper sheet or the aluminum sheet processed in the step (4) into a bending die, and enabling an included angle between a first connecting area and a second connecting area of the cell electrode adapter sheet to form 90 degrees to obtain a cell electrode adapter sheet semi-finished product;
(6) surface cleaning: cleaning the surface of the semi-finished product of the cell electrode adapter plate, and then drying the semi-finished product;
(7) annealing and softening: and (4) putting the semi-finished product of the cell electrode adapter sheet processed in the step (6) into a vacuum annealing furnace for vacuum annealing treatment, so that the hardness of the arc-shaped bending area of the cell electrode adapter sheet is reduced, and the stress of the arc-shaped bending area of the cell electrode adapter sheet is reduced.
2. The method of claim 1, wherein the cell electrode interposer is L-shaped when laid flat.
3. The method according to claim 1, wherein when the cell electrode interposer is made of copper, the thicknesses of the first connection region and the second connection region are set to 0.3mm to 0.5mm, respectively, and the thickness of the arc-shaped bending region after thinning is set to 0.2mm to 0.3 mm.
4. The method according to claim 1, wherein when the cell electrode interposer is made of aluminum, the thicknesses of the first connection region and the second connection region are set to 0.5mm to 0.7mm, respectively, and the thickness of the arc-shaped bending region after thinning is set to 0.3mm to 0.4 mm.
5. The method according to claim 1, wherein when the cell electrode interposer is made of a copper material, the step (7) specifically includes the following steps:
(71) placing the semi-finished product of the cell electrode adapter plate processed in the step (6) into a vacuum annealing furnace for preheating treatment, wherein in the preheating treatment stage, the heating time is 100-150 min, the heat preservation temperature is 480-520 ℃, and the heat preservation time is 50-70 min;
(72) continuously heating for 40-60 min to 530-560 ℃ and keeping the temperature for 200-250 min;
(73) and (5) cooling the semi-finished product of the cell electrode adapter sheet processed in the step (72) in a nitrogen cooling mode, wherein the cooling time is 50-70 min.
6. The method according to claim 1, wherein when the cell electrode interposer is made of an aluminum material, the step (7) specifically includes the following steps:
(71) placing the semi-finished product of the cell electrode adapter plate processed in the step (6) into a vacuum annealing furnace for preheating treatment, wherein in the preheating treatment stage, the heating time is 70-100 min, the heat preservation temperature is 450-470 ℃, and the heat preservation time is 50-70 min;
(72) continuously heating for 40-60 min to 480-500 deg.c for 200-250 min;
(73) and (5) cooling the semi-finished product of the cell electrode adapter sheet processed in the step (72) in a nitrogen cooling mode, wherein the cooling time is 50-70 min.
7. The preparation method of the novel cell electrode patch according to claim 1, wherein when the cell electrode patch is made of copper, after the cell electrode patch is subjected to vacuum annealing, the hardness of the arc-shaped bending region of the cell electrode patch is controlled to be 35-45 HV0.2。
8. The manufacture of the novel cell electrode interposer of claim 1The preparation method is characterized in that when the cell electrode adapter sheet is made of aluminum materials, after the cell electrode adapter sheet is subjected to vacuum annealing treatment, the hardness of the arc-shaped bending area of the cell electrode adapter sheet is controlled to be 19-23 HV0.2。
9. The method of claim 1, wherein when the cell electrode interposer is made of copper, the method further comprises the following steps:
(8) passivation: and passivating the semi-finished product of the battery cell electrode adapter plate subjected to annealing treatment.
10. A novel cell electrode patch, which is characterized by being prepared by the preparation method of the novel cell electrode patch according to any one of claims 1 to 7.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115132964A (en) * | 2022-08-30 | 2022-09-30 | 楚能新能源股份有限公司 | Lithium battery pole piece substrate and pole piece manufacturing method |
| WO2024011882A1 (en) * | 2022-07-13 | 2024-01-18 | 宁德时代新能源科技股份有限公司 | Thermal management component, thermal management system, battery box, battery, and electrical device |
| WO2024026861A1 (en) * | 2022-08-05 | 2024-02-08 | 宁德时代新能源科技股份有限公司 | Adapter member, battery cell, battery, and electric device |
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| CN115132964A (en) * | 2022-08-30 | 2022-09-30 | 楚能新能源股份有限公司 | Lithium battery pole piece substrate and pole piece manufacturing method |
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