CN114914590B - Manufacturing method of circular ring battery and circular ring battery - Google Patents
Manufacturing method of circular ring battery and circular ring battery Download PDFInfo
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- CN114914590B CN114914590B CN202210584942.3A CN202210584942A CN114914590B CN 114914590 B CN114914590 B CN 114914590B CN 202210584942 A CN202210584942 A CN 202210584942A CN 114914590 B CN114914590 B CN 114914590B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 52
- 239000003792 electrolyte Substances 0.000 claims abstract description 19
- 238000004804 winding Methods 0.000 claims abstract description 17
- 238000003466 welding Methods 0.000 claims abstract description 11
- 238000009517 secondary packaging Methods 0.000 claims abstract description 8
- 230000004913 activation Effects 0.000 claims abstract description 6
- 239000000126 substance Substances 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 238000012545 processing Methods 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 14
- 239000011248 coating agent Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 12
- 239000011267 electrode slurry Substances 0.000 claims description 12
- 238000009966 trimming Methods 0.000 claims description 9
- 238000005096 rolling process Methods 0.000 claims description 8
- 230000003213 activating effect Effects 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000009516 primary packaging Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 description 11
- 238000007789 sealing Methods 0.000 description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 7
- 239000002390 adhesive tape Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000002985 plastic film Substances 0.000 description 5
- 229920006255 plastic film Polymers 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000004080 punching Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229910000625 lithium cobalt oxide Inorganic materials 0.000 description 1
- BFZPBUKRYWOWDV-UHFFFAOYSA-N lithium;oxido(oxo)cobalt Chemical compound [Li+].[O-][Co]=O BFZPBUKRYWOWDV-UHFFFAOYSA-N 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Abstract
The invention discloses a manufacturing method of a circular ring battery, which comprises the following steps: preparing a positive plate and a negative plate; manufacturing a bag-making pole piece; forming a battery body by sequentially stacking or winding; welding the battery body with the positive electrode lug and the negative electrode lug respectively; manufacturing a circular battery shell and installing the circular battery shell into a battery body; performing primary packaging treatment on the annular battery shell; electrolyte is injected into the annular battery shell; respectively carrying out activation, chemical composition and secondary packaging treatment on the circular ring battery; the invention also discloses a ring battery, which is manufactured by adopting the manufacturing method of the ring battery, and comprises a ring battery shell, a positive electrode lug arranged on one side of the ring battery shell, a negative electrode lug arranged on the other side of the ring battery shell and a battery body arranged in the ring battery shell; the manufacturing method of the circular ring battery has low production cost and high manufacturing efficiency, so that the circular ring battery has mass productivity; the ring battery of the invention has high durability and safety.
Description
Technical Field
The invention relates to the technical field of batteries and battery manufacturing, in particular to a manufacturing method of a circular ring battery and the circular ring battery.
Background
Along with the continuous improvement of living standard of people, the demands of people on various electronic intelligent products are continuously improved. In order to meet the use requirements of people, the electronic intelligent products have to be improved in the directions of high performance, high integration level, small design, convenience in wearing and the like, such as intelligent bracelets, intelligent glasses, intelligent pens and the like. At this time, in order to meet the design precision requirement of the intelligent product, a new special-shaped battery needs to be designed to meet the requirement.
Among them, the ring battery is used as one of the special-shaped batteries, and currently, there is a great demand in the market of electronic intelligent products. However, the ring battery on the market must be manufactured by a series of special processing devices, such as a special device for manufacturing a pole piece bag of the ring battery, a primary packaging device, a secondary packaging device, etc., and the ring battery manufactured by the special processing device has high manufacturing cost, complex working procedures and long processing time, and finally results in low production efficiency of the ring battery, has no mass producibility and can only receive the customized production of small-scale orders.
Disclosure of Invention
The present invention has been made to overcome the above-mentioned drawbacks of the prior art, and an object of the present invention is to provide a method of manufacturing a ring battery, which reduces the manufacturing cost of the ring battery while improving the production efficiency of the ring battery, and which can provide mass productivity of the ring battery manufactured according to the method of manufacturing a ring battery, and a ring battery thereof.
In order to achieve the above purpose, the present invention is realized by the following technical scheme:
In a first aspect, the present invention provides a method for manufacturing a circular ring battery, comprising:
S1, preparing a positive plate and a negative plate;
S2: making bags according to the mode that one layer of diaphragm is attached to the top of the positive plate, and meanwhile the bottom of the positive plate is attached to the other layer of diaphragm, cutting through a diaphragm cutter in the bag making process, and finally forming one layer of bag making pole piece;
S3, sequentially stacking a layer of negative pole piece and a layer of bag-making pole piece in the step S2 through battery pole piece stacking equipment, or winding a layer of negative pole piece and a layer of bag-making pole piece in the step S2 through battery pole piece winding equipment, and forming a battery body after stacking or winding is completed;
S4, welding the battery body with the positive electrode lug positioned on one side of the battery body and the negative electrode lug positioned on the other side of the battery body through welding equipment;
s5, stamping the battery body into a circular battery shell through die processing equipment, and mounting the battery body into the circular battery shell;
S6: packaging the annular battery shell provided with the battery body through the arc-shaped end socket, and forming an annular battery after packaging;
s7, electrolyte is injected into the annular battery through the battery liquid injection equipment;
s8, activating the ring battery through battery activating equipment;
s9, carrying out chemical composition treatment on the annular battery through battery chemical composition equipment;
And S10, trimming the inner ring of the circular ring battery through the circular ring inner cutter, trimming the outer ring of the circular ring battery through the arc-shaped outer cutter, and completing secondary packaging of the circular ring battery after trimming.
Preferably, the preparing the positive electrode sheet and the negative electrode sheet in the step S1 includes the following steps:
respectively preparing positive electrode slurry and negative electrode slurry by slurry production equipment;
coating positive electrode slurry on a positive electrode base film and coating negative electrode slurry on a negative electrode base film through coating equipment respectively;
rolling the positive electrode base film and the negative electrode base film respectively through rolling equipment;
and processing the positive electrode base film into a positive electrode plate and processing the negative electrode base film into a negative electrode plate through a battery electrode plate stamping device respectively, or processing the positive electrode base film into a positive electrode plate and processing the negative electrode base film into a negative electrode plate through a electrode plate die cutting device respectively.
Preferably, the battery pole piece stamping device comprises annular cutters for stamping the positive pole base film into a positive pole piece and stamping the negative pole base film into a negative pole piece; the annular cutters are utilized to respectively and rapidly punch into an annular positive plate and an annular negative plate.
Preferably, the die processing apparatus in step S5 includes a circular ring die; and manufacturing the annular battery shell through an annular die.
Preferably, the activating treatment is performed on the ring battery by a battery activating device in the step S8, and the activating time ranges from 36 hours to 60 hours; the 36-60 hours are the optimal activation time for experimental verification, and the thorough infiltration of the electrolyte can be ensured.
In a second aspect, the invention provides a circular ring battery, which is manufactured by adopting the manufacturing method of the circular ring battery according to any one of claims 1 to 6, and comprises a circular ring battery shell, a positive electrode lug arranged on one side of the circular ring battery shell, a negative electrode lug arranged on the other side of the circular ring battery shell, a battery body arranged in the circular ring battery shell and electrolyte filled in the circular ring battery shell, wherein the battery body comprises a plurality of positive electrode plates, a negative electrode plate and a diaphragm, the positive electrode plates, the negative electrode plates and the diaphragm are arranged in a manner of sequentially laminating a layer of positive electrode plates and a layer of negative electrode plates or winding a layer of positive electrode plates and a layer of negative electrode plates, a diaphragm is arranged between each layer of positive electrode plates and the negative electrode plates, the positive electrode plates, the negative electrode plates and the diaphragm are immersed in an electrolyte environment, the positive electrode lug is electrically connected with the positive electrode plates, and the negative electrode lugs are electrically connected with the negative electrode plates.
Preferably, the side wall of the circular battery shell is in a ladder shape.
Compared with the prior art, the invention has the beneficial effects that:
1. The diaphragm cutter provided in the step S2 can be used for rapidly preparing the bag-making pole piece; the arc-shaped sealing head provided in the step S6 can be used for rapidly carrying out primary packaging along the side wall of the circular ring battery shell provided with the battery body, and the circular ring inner cutter and the arc-shaped outer cutter provided in the step S10 can be used for rapidly completing secondary packaging of the circular ring battery, so that the processing efficiency of the circular ring battery is remarkably improved, and meanwhile, the production process is simplified and the production cost is reduced.
2. The manufacturing method of the circular ring battery improves the production efficiency of the circular ring battery, can realize mass rapid production of the circular ring battery, and ensures that the circular ring battery has mass productivity; the annular battery provided by the invention can meet the requirements of some electronic intelligent products requiring the structural design of the annular battery, and the annular structure fully utilizes the effective space of the annular battery shell, so that the battery capacity is maximized, the structure is more stable, and the durability and the safety are higher.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a circular ring battery manufactured by the manufacturing method of a circular ring battery provided by the invention;
Fig. 2 is a schematic view of an exploded structure of a battery body according to the present invention;
FIG. 3 is a schematic view of the structure of the annular cutter provided by the invention;
FIG. 4 is a schematic view of the structure of the diaphragm cutter provided by the invention;
FIG. 5 is a schematic view of the structure of the annular mold provided by the invention;
FIG. 6 is a schematic structural view of an arc closure head provided by the present invention;
FIG. 7 is a schematic view of the structure of the circular ring inner cutter and the arc outer cutter provided by the invention;
FIG. 8 is a schematic cross-sectional view of an arcuate outer cutter provided by the present invention;
Fig. 9 is a schematic structural view of the bag making pole piece provided by the invention.
The drawings include:
1. A circular ring battery housing; 2. a battery body; 3. a positive electrode tab; 4. a negative electrode ear; 5. a positive plate; 6. a negative electrode sheet; 7. a diaphragm; 8. making a bag pole piece; 10. an annular cutter; 20. a diaphragm cutter; 30. a circular ring mold; 31. a mold core; 32. an upper movable die; 40. an arc-shaped end socket; 51. a circular ring inner cutter; 52. an arc-shaped outer cutter.
Detailed Description
The technical solutions of the present embodiment of the present invention will be clearly and completely described below with reference to the drawings in the present embodiment of the present invention, and it is apparent that the described present embodiment is one embodiment of the present invention, but not all the present embodiments. All other embodiments, which can be made by those skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.
Example 1
Referring to fig. 1 to 9, the present embodiment provides a method for manufacturing a circular ring battery, and the type of the battery body 2 of the circular ring battery may be a soft lithium cobalt oxide system or a ternary lithium system, and the system is not limited.
The size and capacity of the battery body 2 can be determined according to the multiplying power requirement of the battery charge and discharge capability, the design requirement of a voltage system and gram capacity required by the electronic intelligent product.
Specifically, the size and capacity of the battery body 2 according to the above design requirements, among which it is also possible to confirm:
1. OVERHANG of the separator 7, the negative electrode sheet 6 and the positive electrode sheet 5, wherein OVERHANG is defined to mean that the length and the width direction of the negative electrode sheet are larger than those of the positive electrode sheet and the negative electrode sheet, so that the radius of the separator 7, the radius of the negative electrode sheet 6 and the radius of the positive electrode sheet 5 are confirmed;
2. the density and thickness of the positive plate 5 can be obtained according to the design requirements, so that the density and thickness of the negative plate 6 can be confirmed;
N/P ratio, wherein the definition of N/P ratio refers to the positive to negative capacity exceeding the positive capacity margin at the same stage and under the same conditions;
4. The thickness of the battery body 2 was confirmed according to the relationships of 1, 2 and 3 described above.
Therefore, as known from the above-mentioned 1,2,3 and 4, the size and capacity of the battery body 2 can be calculated according to the actual design requirements, and the manufacturing method of the circular ring battery of the present invention does not limit the size of the circular ring battery.
In order to ensure that the battery body 2 is fully immersed in the electrolyte environment, the electrolyte injection coefficient inside the annular battery case 1 may be set to 6.0, and the electrolyte retention coefficient is greater than 2.0.
The manufacturing method of the annular battery comprises the following manufacturing steps:
S1: preparing a positive electrode sheet 5 and a negative electrode sheet 6, wherein the method further comprises the following steps:
And (3) a step of: and respectively preparing positive electrode slurry and negative electrode slurry by slurry production equipment.
Respectively coating positive electrode slurry on a positive electrode base film and coating negative electrode slurry on a negative electrode base film through coating equipment; the coating size may be determined according to OVERHANG of the separator 7, the negative electrode sheet 6 and the positive electrode sheet 5, while it should be ensured that the positive electrode coating cannot be applied to the welded end of the positive electrode tab 3, and the negative electrode coating size may be slightly larger than the diameter of the negative electrode sheet 6 by 1 to 2mm.
Thirdly, rolling the positive electrode base film and rolling the negative electrode base film through rolling equipment respectively, wherein the rolling thickness is determined according to the thickness of the positive electrode plate 5 and the negative electrode plate 6, and the positive electrode base film can be rolled for the second time.
The method comprises the steps of respectively processing a positive base film into a positive plate 5 and processing a negative base film into a negative plate 6 through a battery plate punching device, wherein the positive plate 5 and the negative plate 6 are materials for manufacturing a battery body 2 in a laminated form, or respectively processing the positive base film into the positive plate 5 and processing the negative base film into the negative plate 6 through a plate die cutting device, the positive plate 5 and the negative plate 6 are materials for manufacturing the battery body 2 in a winding form, specifically, the battery plate punching device comprises an annular cutter 10 and a loading and unloading annular cutter device for loading and unloading the annular cutter 10, and referring to fig. 3, the shape of the annular cutter 10 is shown in fig. 3, one annular cutter 10 is used for punching the positive base film into the positive plate 5, the other annular cutter 10 is used for punching the negative base film into the negative plate 6, and the annular cutters 10 are loaded and unloaded by the same annular cutter device.
S2, bagging is carried out according to the mode that one layer of diaphragm 7 is attached to the top of the positive plate 5, and meanwhile, the bottom of the positive plate 5 is attached to the other layer of diaphragm 7, wherein when the bagging pole piece 8 is made of a material for manufacturing the battery body 2 in a laminated mode, referring to FIG. 4, the bagging pole piece 8 is formed by cutting through a diaphragm cutter 20, specifically, the diaphragm cutter 20 is a ring-shaped cutter, and the diaphragm cutter 20 is used for aligning an upper layer diaphragm 7 attached to the same positive plate 5 with a lower layer diaphragm 7 and manufacturing the bagging pole piece 8. The chemical property of the positive plate 5 is active, and the bag making plate 8 can avoid oxidation reaction or pollution in the exposed air of the positive plate 5.
And S3, sequentially stacking a layer of negative electrode sheet 6 and a layer of bag-making pole piece 8 in the step S2 through a battery pole piece stacking device, or winding the layer of negative electrode sheet 6 and the layer of bag-making pole piece 8 in the step S2 through a battery pole piece winding device, forming a battery body 2 after stacking or winding is completed, wherein the stacking thickness or winding thickness of the battery body 2 is determined according to the designed thickness of the battery body 2, and reinforcing the battery body 2 through a termination adhesive tape. The termination adhesive tape can be green adhesive tape, and the termination adhesive tape has the functions of winding the outer surface of the circular battery body 2, fixing the battery body 2 and resisting electrolyte corrosion, but the termination adhesive tape winding needs to be designed by considering the thickness of the battery body 2. In addition, in the lamination or winding process, the positioning of the welding ends of the positive electrode tab 3 and the negative electrode tab 4 needs to be considered, and whether the laminated or wound battery body 2 meets the design requirements of the installation positions and angles of the positive electrode tab 3 and the negative electrode tab 4 needs to be verified, wherein the installation positions and angles of the welding ends of the positive electrode tab 3 and the negative electrode tab 4 can be obtained through the size and the capacity of the battery body 2.
And S4, respectively welding the battery body 2 with the positive electrode lugs 3 positioned on one side of the battery body 2 through welding equipment, and welding the battery body with the negative electrode lugs 4 positioned on the other side of the battery body 2, wherein after the welding is finished, the positive electrode lugs 3 are electrically connected with the positive electrode plates 5 of the battery body 2, and the negative electrode lugs 4 are electrically connected with the negative electrode plates 6 of the battery body 2.
S5, stamping the annular battery shell 1 through die processing equipment, wherein a battery body 2 is arranged in the annular battery shell 1; the thickness of the punched shell of the annular battery shell 1 is determined according to design requirements, in this embodiment, the annular battery shell 1 is made of an aluminum plastic film material, and in other embodiments, the annular battery shell 1 may be a steel shell, an iron shell or an aluminum shell. When the material of the circular ring battery shell 1 is an aluminum plastic film, the width of the aluminum plastic film needs to be considered in the preparation process, the width of the aluminum plastic film is determined according to the overall size of the battery body 2, the overall size of the battery body 2 comprises the exposed sizes of the positive electrode lug 3 and the negative electrode lug 4, and the exposed sizes of the lug are determined according to design requirements.
Referring to fig. 5, the mold processing device includes a circular mold 30, the circular mold 30 includes an upper moving mold 32 and a mold core 31, the mold core 31 is a circular ring, a cylinder is included in a groove of the upper moving mold 32, and an aluminum plastic film is pressed out of the shape of the circular battery case 1 by pressing the upper moving mold 32 and the mold core 31.
S6: the circular ring battery shell 1 provided with the battery body 2 is subjected to primary packaging treatment through the arc-shaped sealing head 40, and the circular ring battery is formed after primary packaging is completed. Referring to fig. 6, fig. 6 is a shape of an arc-shaped sealing head 40, the arc-shaped sealing head 40 encapsulates the side wall of the annular battery case 1 with the battery body 2 in the step S6, and the arc-shaped sealing head 40 has two forms of heat sealing and cold sealing.
And S7, injecting electrolyte into the annular battery shell 1 through a battery liquid injection device to initially form an annular battery, wherein the annular battery can be adsorbed for 2-3 times in the electrolyte injection process, so that the electrolyte is prevented from polluting during pre-sealing, and the pre-sealing is normally packaged at the top end of an air bag of the annular battery.
S8: the ring battery is activated by the battery activation equipment, the activation time can be between 36 hours and 60 hours, and the battery body 2 inside the ring battery is ensured to be fully soaked in the electrolyte environment.
S9: the battery forming and dividing equipment is used for carrying out forming and dividing treatment on the annular battery, the annular battery is subjected to forming treatment under different conditions according to design requirements and actual production requirements, and then battery parameters such as the capacity and the internal resistance of the battery can be analyzed, so that the quality grade of the battery can be determined, wherein the forming and dividing treatment steps of the annular battery can be operated separately or simultaneously.
And S10, carrying out exhaust treatment on the battery before the secondary packaging step, then trimming the inner ring of the circular battery through a circular ring inner cutter 51, trimming the outer ring of the circular battery through an arc outer cutter 52, and finishing secondary packaging of the circular battery after trimming. Referring to fig. 7, fig. 7 includes an annular inner cutter 51, an arc outer cutter 52 and a placement bottom plate, wherein the inner wall of the arc outer cutter 52 is inclined, and can be used for cutting off the redundant aluminum-plastic shell on the outer wall of the annular battery, so that the unnecessary volume is reduced, and the structure is more attractive. When the inner circular cutter 51 trims the inner ring of the circular battery, the outer circular cutter 52 trims the outer ring of the circular battery, so that the secondary packaging of the circular battery is completed, then the side wall of the circular battery can be folded manually, and finally the side wall of the circular battery has a trapezoid structure.
After the ring cell is packaged for the second time, the ring cell is already manufactured. At this time, the electrical performance test of the battery core can be selectively performed on the annular battery, namely, the annular battery is subjected to OCV test processing through OCV test equipment, and the OCV test equipment can continuously measure each item of performance data of the annular battery, so that defective products and good products of the battery are distinguished.
In summary, each step of the manufacturing method of the circular ring battery ensures the safety, reliability and stability of the circular ring battery production, and the special diaphragm cutter 20, the arc-shaped end socket 40, the circular ring inner cutter 51 and the arc-shaped outer cutter 52 in the manufacturing method improve the production efficiency of the circular ring battery, reduce the production cost and realize the mass rapid production of the circular ring battery.
Example 2
Referring to fig. 1 and 2, the present embodiment provides a method for manufacturing a circular ring battery, which includes a circular ring battery case 1, a positive electrode tab 3, a negative electrode tab 4 and a battery body 2. Specifically, positive tab 3 has been installed to ring battery casing 1 one side, and negative tab 4 has been installed to ring battery casing 1 another side, and battery body 2 and the electrolyte of filling in this ring battery casing 1 sealed inside are installed to ring battery casing 1's sealed inner space, and battery body 2 includes a plurality of positive plate 5, negative plate 6 and diaphragm 7, and positive plate 5, negative plate 6 and diaphragm 7's arrangement be one deck positive plate 5 and one deck negative plate 6 stack gradually and form, every layer all be provided with diaphragm 7 between positive plate 5 and the negative plate 6.
The positive plate 5, the diaphragm 7 and the negative plate 6 are immersed in an electrolyte environment, the positive plate 5 is electrically connected with the positive lug 3, and the negative plate 6 is electrically connected with the negative lug 4.
In summary, the above-mentioned annular battery structure is suitable for manufacturing not only secondary batteries such as nickel-cadmium and lithium batteries, but also nickel-hydrogen annular battery structures, and the annular battery housing 1 may be manufactured by a steel shell, an iron shell or an aluminum shell. The ring structure of the ring battery fully utilizes the effective space of the ring battery shell 1, so that the battery capacity is maximized, the structure is more stable, and the durability and the safety are higher.
Example 3
The present embodiment provides a method of manufacturing a ring battery as described in embodiment 1, while the present embodiment differs from the ring battery in embodiment 2 in that: the battery body 2 of the circular ring battery of the embodiment comprises a plurality of positive plates 5, negative plates 6 and diaphragms 7, wherein the positive plates 5, the negative plates 6 and the diaphragms 7 are arranged in a way of winding one layer of positive plates 5 and one layer of negative plates 6, and each layer of diaphragms 7 are arranged between the positive plates 5 and the negative plates 6.
The foregoing is only illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the invention, but rather as various modifications, equivalent arrangements, improvements, etc., within the spirit and principles of the present invention.
Claims (6)
1. A method of manufacturing a circular ring battery, comprising:
s1, preparing a positive plate (5) and a negative plate (6);
the preparation of the positive electrode sheet (5) and the negative electrode sheet (6) in the step S1 comprises the following steps:
respectively preparing positive electrode slurry and negative electrode slurry by slurry production equipment;
coating positive electrode slurry on a positive electrode base film and coating negative electrode slurry on a negative electrode base film through coating equipment respectively;
rolling the positive electrode base film and the negative electrode base film respectively through rolling equipment;
Processing the positive electrode base film into a positive electrode sheet (5) and processing the negative electrode base film into a negative electrode sheet (6) through battery electrode sheet stamping equipment respectively, or processing the positive electrode base film into the positive electrode sheet (5) and processing the negative electrode base film into the negative electrode sheet (6) through electrode sheet die cutting equipment respectively;
The battery pole piece stamping equipment comprises an annular cutter (10) for stamping the positive pole base film into a positive pole piece (5) and stamping the negative pole base film into a negative pole piece (6);
S2: according to the method, a layer of diaphragm (7) is attached to the top of an anode sheet (5), meanwhile, the bottom of the anode sheet (5) is attached to another layer of diaphragm (7), and in the bag making process, a layer of bag making pole piece (8) is finally formed by cutting through a diaphragm cutter (20);
The diaphragm cutter (20) is a cutter in a circular ring shape;
S3, sequentially stacking a layer of negative electrode sheet (6) and a layer of bag-making pole sheet (8) in the step S2 through battery pole sheet stacking equipment, or winding the layer of negative electrode sheet (6) and the layer of bag-making pole sheet (8) in the step S2 through battery pole sheet winding equipment, and forming a battery body (2) after stacking or winding is completed;
s4, respectively welding the battery body (2) with the positive electrode lug (3) positioned on one side of the battery body (2) and the negative electrode lug (4) positioned on the other side of the battery body (2) through welding equipment;
s5, stamping the annular battery shell (1) through die processing equipment, and loading the battery body (2) into the annular battery shell (1);
s6: the method comprises the steps of packaging a circular ring battery shell (1) provided with a battery body (2) through an arc-shaped seal head (40), and forming a circular ring battery after packaging;
s7, electrolyte is injected into the annular battery through the battery liquid injection equipment;
s8, activating the ring battery through battery activating equipment;
s9, carrying out chemical composition treatment on the annular battery through battery chemical composition equipment;
and S10, trimming the inner ring of the circular battery through a circular ring inner cutter (51), trimming the outer ring of the circular battery through an arc-shaped outer cutter (52), and finishing secondary packaging of the circular battery after trimming.
2. The method of manufacturing a circular ring battery according to claim 1, wherein the mold processing apparatus in step S5 includes a circular ring mold (30).
3. The method according to claim 1, wherein in step S3, a termination tape is attached to the outer surface of the annular battery case (1).
4. The method according to claim 1, wherein the activation time of the ring battery by the battery activation device in step S8 is in the range of 36 hours to 60 hours.
5. The manufacturing method of the circular ring battery is characterized in that the circular ring battery is manufactured by adopting any one of claims 1 to 4, and comprises a circular ring battery shell (1), a positive electrode lug (3) arranged on one side of the circular ring battery shell (1), a negative electrode lug (4) arranged on the other side of the circular ring battery shell (1), a battery body (2) arranged in the circular ring battery shell (1) and electrolyte filled in the circular ring battery shell (1), wherein the battery body (2) comprises a plurality of positive electrode lugs (5), negative electrode lugs (6) and diaphragms (7), the arrangement mode of the positive electrode lugs (5), the negative electrode lugs (6) and the diaphragms (7) is that one layer of positive electrode lugs (5) and one layer of negative electrode lugs (6) are sequentially laminated or one layer of positive electrode lugs (5) and one layer of negative electrode lugs (6) are wound, a diaphragm (7) is arranged between each layer of positive electrode lugs (5) and negative electrode lugs (6), the electrolyte is soaked in the positive electrode lugs (5), the negative electrode lugs (6) and the diaphragm (7) are connected in an electrolyte environment, and the positive electrode lugs (4) are electrically connected.
6. The circular ring battery according to claim 5, wherein the side wall of the circular ring battery case (1) has a stepped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210584942.3A CN114914590B (en) | 2022-05-27 | Manufacturing method of circular ring battery and circular ring battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210584942.3A CN114914590B (en) | 2022-05-27 | Manufacturing method of circular ring battery and circular ring battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114914590A CN114914590A (en) | 2022-08-16 |
| CN114914590B true CN114914590B (en) | 2024-07-02 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094618A (en) * | 2012-12-19 | 2013-05-08 | 天津市捷威动力工业有限公司 | Bag-making type lithium ion battery and preparation method thereof |
| CN104332648A (en) * | 2014-07-31 | 2015-02-04 | 中航锂电（洛阳）有限公司 | Special-shaped laminated-sheet-typed lithium ion battery and cell |
| CN204257773U (en) * | 2014-12-25 | 2015-04-08 | 海宁兰博电源科技有限公司 | A kind of inside and outside encapsulating mould of annular lithium battery |
| CN206340617U (en) * | 2016-12-29 | 2017-07-18 | 安普瑞斯（无锡）有限公司 | A kind of circular ring type lithium ion battery |
| CN107591566A (en) * | 2016-07-08 | 2018-01-16 | 宁德新能源科技有限公司 | Arc secondary cell forming method |
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094618A (en) * | 2012-12-19 | 2013-05-08 | 天津市捷威动力工业有限公司 | Bag-making type lithium ion battery and preparation method thereof |
| CN104332648A (en) * | 2014-07-31 | 2015-02-04 | 中航锂电（洛阳）有限公司 | Special-shaped laminated-sheet-typed lithium ion battery and cell |
| CN204257773U (en) * | 2014-12-25 | 2015-04-08 | 海宁兰博电源科技有限公司 | A kind of inside and outside encapsulating mould of annular lithium battery |
| CN107591566A (en) * | 2016-07-08 | 2018-01-16 | 宁德新能源科技有限公司 | Arc secondary cell forming method |
| CN206340617U (en) * | 2016-12-29 | 2017-07-18 | 安普瑞斯（无锡）有限公司 | A kind of circular ring type lithium ion battery |
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