CN101938012B - Method for manufacturing cylindrical battery capable of improving battery capacity - Google Patents
Method for manufacturing cylindrical battery capable of improving battery capacity Download PDFInfo
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- CN101938012B CN101938012B CN200910108534.5A CN200910108534A CN101938012B CN 101938012 B CN101938012 B CN 101938012B CN 200910108534 A CN200910108534 A CN 200910108534A CN 101938012 B CN101938012 B CN 101938012B
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- combination cover
- pole group
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title abstract description 16
- 238000007906 compression Methods 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 230000006835 compression Effects 0.000 claims abstract description 7
- 230000001681 protective effect Effects 0.000 claims description 22
- 238000005452 bending Methods 0.000 claims description 8
- 239000003792 electrolyte Substances 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000003825 pressing Methods 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 description 7
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- -1 nickel metal hydride Chemical class 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/049—Processes for forming or storing electrodes in the battery container
-
- 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
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
- H01M50/593—Spacers; Insulating plates
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/152—Lids or covers characterised by their shape for cells having curved cross-section, e.g. round or elliptic
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
- Primary Cells (AREA)
Abstract
The invention discloses a method for manufacturing a cylindrical battery capable of improving battery capacity. The method comprises the following steps of: assembling a battery pole assembly with height of h1+delta h into a battery cylinder of the cylindrical battery; forming an annular groove with height of h2 on the battery cylinder; placing a combined cap with height of h3 on the upper part in the battery cylinder; connecting the combined cap with the battery pole assembly, wherein the total height H+delta h of the battery is equal to (h1+delta h)+h2+h3, and H is standard height of the cylindrical battery; and applying pressure to a sealing end of the battery, wherein the annular groove with height of (h2+h3) and the combined cap are shortened by delta h by the pressure; the heights of the annular groove and the combined cap are reduced to (h2+h3)' which is equal to (h2+h3)-delta h; and the cylindrical battery is restored to the standard height H which is equal to (h1+delta h)+(h2+h3)' and (h1+delta h)+(h2+h3)-delta h. The method for manufacturing the battery of the invention reduces the height of the components such as the annular groove and the like by compression technology, so that the space in the battery for accommodating the battery pole assembly is improved.
Description
Technical field
The present invention relates to battery manufacture field, be specifically related to a kind of manufacture method of cylindrical battery.
Background technology
Please refer to Fig. 1 to Fig. 7, cylindrical battery generally comprises battery barrel 1, be arranged on battery pole group 3 that height that the interior coiling of battery barrel 1 forms is h1, be arranged on the combination cover cap 2 on battery barrel 1 top and be arranged on the parts such as cylindric bracing frame 4 in the middle of battery pole group 3.Battery barrel 1 bottom is also provided for the bottom insulation circle 7 that positive/negative exit 52 and battery pole group are separated conventionally, and the top of battery barrel is provided with for the top insulated ring 6 separating that battery pole group 3 and combination cover cap 2 are insulated.This top insulated ring 6 is pressed in the top of battery pole group 3 and is stuck in the cannelure 12 times that the height of moulding on battery barrel 1 is h2.The center of this top insulated ring 6 is provided with one can make the lug hole that upwardly extending bearing/anodal exit 51 passes, its slightly larger in diameter also can be held this negative/anodal exit 51 in the diameter of bracing frame 4, and this lug hole is also for putting into bracing frame 4 from the open end of battery barrel 1.In existing cylindrical battery manufacturing process, generally by roller groove processes moulding cannelure 12, in moulding cannelure 12, it is highly the annular wall 11 of the combination cover cap 2 of h3 that cannelure 12 tops of battery barrel 1 are formed for clamping.During packaged battery, combination cover cap is placed on to the top of top insulated ring 6, simultaneously by upwardly extending negative/anodal exit 51 is welded on combination cover cap 2, afterwards, annular wall 11 is bent and is pressed together on the outermost insulating sealer 22 of combination cover cap 2 with external force F1.
Please refer to Fig. 7, the concrete structure of existing combination cover cap 2 comprises the top board 21 of extraction electrode, thermistor 23, explosion-proof pressure protective device 24 and the conductive plate 25 welding together with pressure protective device 24 being used at overheat condition incision power-off stream.Described top board 21, thermistor 23, pressure protective device 24 and conductive plate 25 are closely together by insulating sealer 22.
As shown in Figures 1 to 6, the concrete steps of manufacturing cylindrical battery in prior art generally comprise:
First make battery barrel 1, the bottom insulation circle 7 that positive/negative exit 52 and battery pole group 3 are separated is placed in the bottom of battery barrel 1; Then to putting into the highly battery pole group 3 for h1 in battery barrel 1, and downward positive/negative exit 52 is walked around to bottom insulation circle 7 be connected with bottom electrode.
Then as shown in Figure 1, top insulated ring 6 is placed on the upper surface of battery pole group 3, and makes negative/anodal exit 51 extending straight up pass the lug hole of top insulated ring 6.
Afterwards, as shown in Figure 2, on battery barrel 1, utilize the cannelure 1 that rolling process height of formation is h2, this cannelure 12 is at the inner flange (not indicating) being pressed on top insulated ring 6 that forms of battery barrel 1, the flange 1 of this battery barrel 1 inside is pressed in battery pole group 3 top insulated ring 6, forms annular wall 11 at the top of battery barrel 1 simultaneously.
Then, make as shown in Figure 3 bracing frame 4 through the lug hole on top insulated ring 6, stretch into the inside center of battery pole group 3, and form and closely cooperate with battery pole group 3.
Finally, the free end of upwardly extending bear/anodal exit 51 is welded on to conductive plate 25 bottoms of combination cover cap 2, to battery barrel 1 is inner, inject after electrolyte, and combination cover cap 2 is placed on to the open end (order of above step is depending on concrete technology) of battery barrel 1, and make the annular wall 11 at battery barrel 1 top around this combination cover cap, and be adjacent to the insulating sealer 22 of combination cover cap periphery.Utilize external force F1 that this annular wall pressing is adjacent on insulating sealer 22, obtain the cylindrical battery shown in Fig. 6.
But, battery capacity and interior roll around the volume of battery pole group 3 directly related.The volume of battery pole group 3 is directly proportional to battery pole group 3 height h1 and spreading width.In the manufacture method of existing cylindrical battery, in the limited inner space of battery barrel 1, volume is larger comprises battery pole group 3 and combination cover cap 2, and the height of battery pole group 3 is h1, and the height of combination cover cap 2 is h3.Combination cover cap 2 has been born the several functions such as overtemperature protection, pressure protect, sealing and insulation, and in combination, functional part is a lot.Be used for cannelure 12 structures that the height of split cell utmost point group 3 and combination cover cap 2 is h2 has also taken larger battery barrel 1 inner space simultaneously.Existing various size battery whole height H is invariable standard value, and cell integrated height H equals the height h3 sum of the height h1 of battery pole group 3 and the height h2 of cannelure and combination cover cap 2, H=h1+h2+h3 haply.Therefore, in existing cylindrical cell manufacturing method, the inner space utilance of battery barrel 1 is lower, and in order to meet the demand of electronic product to jumbo battery, battery capacity need to promote.
Summary of the invention
The technical problem to be solved in the present invention is to make up above-mentioned the deficiencies in the prior art, provides one can make full use of inside battery space, improves the cylindrical cell manufacturing method of battery capacity.
Technical problem of the present invention is solved by the following technical programs: a kind of cylindrical cell manufacturing method that improves battery capacity, comprises the following steps: the battery pole that is highly h1+ Δ h is assembled in the battery barrel of cylindrical battery; The cannelure that is h2 at the open end forming height of described battery barrel; The combination cover cap that is highly h3 is placed on to the upside of the ring groove in battery barrel, described combination cover cap connects battery pole group, and by described combination cover cap fixing seal on battery barrel, now, battery total height be H+ Δ h=(h1+ Δ h)+h2+h3, wherein, the calibrated altitude that H is cylindrical battery; From the sealing end of battery exert pressure (F2), described pressure (F2) will be highly that cannelure and the combination cover cap of (h2+h3) shortens Δ h, the height of cannelure and combination cover cap is reduced to (h2+h3) ', that is (h2+h3) '=(h2+h3)-Δ h, after compression cannelure, cylindrical battery recover calibrated altitude H=(h1+ Δ h)+(h2+h3) '=(h1+ Δ h)+(h2+h3)-Δ h.
Wherein, described battery barrel forms annular wall at the open end of upside of the ring groove, after combination cover cap is placed on the upside of the ring groove of battery barrel, utilize external force by inside annular wall bending, the annular wall of described bending by described combination cover cap fixing seal in battery barrel.
Specifically, before battery pole is assembled into battery barrel, at described battery barrel bottom installing insulated ring, from battery pole group, draw positive/negative exit downwards, described positive/negative exit is walked around insulated ring and is contacted with the bottom of battery barrel.
At the top of described battery pole group installing insulated ring, from battery pole group, upwards draw negative/anodal exit, described bear/anodal exit passes the insulated ring of battery pole group top and is welded on the bottom of described combination cover cap.
Then, bracing frame is packed in the middle of described battery pole group.
In this example, before negative/anodal exit and combination cover cap welding or afterwards, can be to the battery pole group injection electrolyte in battery barrel.
Preferably; described combination cover cap comprises the top board of pressure protective device, thermistor and the conduction of the conductive plate, the conduction that connect battery pole group, and conductive plate, pressure protective device, thermistor and top board that described combination cover cap superposes are successively combined from fastening around by insulating sealer.
Concrete, described pressure protective device comprises the connecting portion that welds the elastic portion of conductive plate and extend from elastic portion, described elastic portion and connecting portion junction offer protection breach.
Described pressure F2 acts in the annular wall after bending.
The present invention's beneficial effect is compared with prior art: the 1) cylindrical cell manufacturing method that improves battery capacity of the present invention, compression process is passed through in use, thereby the height of cannelure on battery barrel and combination cover cap (h2+h3) is reduced to (h2+h3) ', thereby make the height h1 of battery pole group increase Δ h, directly increased the developed area of battery pole group 13, thereby lifting battery capacity, makes full use of inside battery space; 2) cylindrical cell manufacturing method that improves battery capacity of the present invention, can significantly promote battery capacity, such as the model roller slot seal lithium ion battery that is 18650, this model cylindrical battery calibrated altitude H is 65 millimeters, in traditional handicraft, the height of battery pole group is 58 millimeters, and in the present invention, the height of battery pole group is 59.5=58+1.5 millimeter; The height h2 tradition of its cannelure is 1.7 millimeters, adopts the height h2 ' of cannelure after technique of the present invention to be reduced to 0.1～0.2 millimeter.Adopt technique of the present invention, battery barrel selection can adopt than original high battery barrel more than 1.5 millimeters, this battery barrel part more than 1.5 millimeters exceeding increases chance highly for battery pole group provides, thereby increase the actual usage space of battery pole group, by increasing, the height of battery pole group is reached to the object that promotes battery capacity.
Accompanying drawing explanation
Fig. 1 is the cutaway view of in existing cylindrical cell manufacturing method, top insulated ring being put into battery barrel;
Fig. 2 is the cylindrical battery cutaway view after existing cylindrical cell manufacturing method central roll groove technique;
Fig. 3 in existing cylindrical cell manufacturing method puts into bracing frame the middle cylindrical battery cutaway view of utmost point group;
Fig. 4 is the cutaway view that in existing cylindrical cell manufacturing method, combination cover cap is placed on to battery barrel top;
Fig. 5 is the cutaway view of integrating combination cover cap in existing cylindrical cell manufacturing method;
Fig. 6 is the height distribution schematic diagram of battery component in existing cylindrical cell manufacturing method;
Fig. 7 is the cutaway view of the combination cover cap in existing cylindrical cell manufacturing method;
Fig. 8 is the cutaway view of combination cover cap in cylindrical cell manufacturing method of the present invention;
Fig. 9 is the cutaway view of in cylindrical cell manufacturing method of the present invention, bottom and top insulated ring being put into battery barrel;
Figure 10 is the cylindrical battery cutaway view after cylindrical cell manufacturing method central roll groove technique of the present invention;
Figure 11 in cylindrical cell manufacturing method of the present invention puts into bracing frame the middle cylindrical battery cutaway view of utmost point group;
Figure 12 is the cutaway view of inserting combination cover cap in cylindrical cell manufacturing method of the present invention;
Figure 13 is the battery cutaway view that applies external force F1 assembling combination cover cap in cylindrical cell manufacturing method of the present invention.
Figure 14 is the height distribution schematic diagram of battery component in cylindrical cell manufacturing method of the present invention.
Figure 15 is the battery cutaway view of F2 compression cannelure of exerting pressure in cylindrical cell manufacturing method of the present invention.
Figure 16 be in cylindrical cell manufacturing method of the present invention cannelure compressed after, the height distribution schematic diagram of battery component.
Embodiment
Below by concrete execution mode, also by reference to the accompanying drawings the present invention is described in further details.
The present invention relates to a kind of cylindrical cell manufacturing method that improves battery capacity, this circular batteries manufacture method adopts the battery pole group 13 that is highly h1+ Δ h is packed in the battery barrel 11 of cylindrical battery; The cannelure 112 that is h2 at the open end forming height of described battery barrel 11; By highly, for the combination cover cap 12 of h3 is placed on cannelure 112 tops in battery barrel 11, described combination cover cap 12 connects battery pole group 13, and by described combination cover cap 12 fixing seals on battery barrel 11.In this example, this battery barrel 11 be highly H+ Δ h=(h1+ Δ h)+h2+h3, wherein, the calibrated altitude that H is cylindrical battery.
Below specifically introduce technical scheme of the present invention.
Please refer to Fig. 1 to Figure 16, the cylindrical battery in present embodiment mainly comprises battery barrel 11, be arranged on battery pole group 13 that height that the interior coiling of battery barrel 11 forms is h1+ Δ h, be arranged on the combination cover cap 12 that the height on battery barrel 11 tops is h3 and be arranged on the parts such as cylindric bracing frame 14 in the middle of battery pole group 13.In this example, this battery barrel 11 be highly H+ Δ h=(h1+ Δ h)+h2+h3, wherein, the calibrated altitude that H is cylindrical battery.
The cannelure 112 that described battery barrel 11 is h2 by roller groove technique at the outside forming height of battery barrel 11.In present embodiment, this roller groove technique is the roller slotted disk sheet of three positions rotation of being positive three-cornered arrangement, and the battery barrel of processing itself also rotates, and by the relative motion of disc and battery barrel, at the outside roller of battery barrel, goes out uniform annular groove.This cannelure 112 is at the inner flange that forms compression top insulated ring 16 of battery barrel 11, and the open end of described battery barrel 11 above cannelure 112 forms annular wall 111.
In present embodiment, described combination cover cap 12 comprises the top board 121 that connects the conductive plate 128 of battery pole group 13, the pressure protective device 124 conducting electricity, thermistor 123 and conduction.Conductive plate 128, pressure protective device 124, thermistor 123 and top board 121 that described combination cover cap 12 superposes are successively combined from fastening around by insulating sealer 122.Conductive plate 128 bottoms arrange some pads, and the upwardly extending bear/anodal exit 151 of this pad and battery pole group 13 welds.Conductive plate 128 welds together with pressure protective device 124.
The below of described insulating sealer 122 is provided with the ring of accommodating for fence conductive plate 128.
Thermistor 123 Bonding pressure protective devices 124 and top board 121 in this example, have been adopted.Lithium ion cylinder shape battery, due to light weight and high-energy-density, has and is better than other type rechargeable battery, such as nickel-cadmium cell and nickel metal hydride battery.Lithium ion battery is extremely responsive to overcharging, and fail safe is the many problems of paying close attention to of battery manufacture always.For example, battery unit becomes and overcharges, and the electrode that lithium metal may be plated to battery unit gets on, and the initiation fire because lithium metal has inflammable characteristic, when battery temperature becomes too high, is got rid of toxic gas.So need thermistor 123 as safety guard, at battery temperature, raise when overheated, when in practice, temperature is between 80 to 90 degrees Celsius, the resistance of this thermistor 123 raises and cuts off electric current, prevents disaster.
In this example, from fail safe, consider, further adopted pressure protective device 124, this pressure protective device 124 is destructive protective devices.In general, the pressure protective device of battery need to tolerate certain pressure, and when the withstand voltage limit of inner pressure of battery overpressure protective device, pressure protective device, by internal sabotage, makes battery pressure release, prevents battery explosion.Described pressure protective device 124 comprises the connecting portion 246 that welds the elastic portion 242 of conductive plate 128 and extend from elastic portion 242 to surrounding, and described elastic portion 242 and connecting portion 246 junctions offer protection breach 244.This protection breach 244 is when the withstand voltage limit of inner pressure of battery overpressure protective device; pressure protective device is bursting at the collision from the protection breach 244 of elastic portion 242 and connecting portion 246 junctions, makes battery pressure release, prevent exploding; but battery is from then on damaged, can not re-use.
Please refer to Fig. 9 to Figure 16, below specifically introduce the cylindrical cell manufacturing method of the improved battery capacity in this example, specifically comprise the following steps:
As shown in Figure 9, at described battery barrel 11 bottom installing bottom insulation circles 17, the battery pole group 13 that is highly h1+ Δ h is packed in the battery barrel 11 of cylindrical battery; From battery pole group 13, draw positive/negative exit 152 downwards, described positive/negative exit 152 is walked around insulated ring 17 and is contacted with the bottom of battery barrel 11.Described battery pole group 13 installing top, top insulated rings 16.Further, from battery pole group 13, upwards draw negative/anodal exit 151.Described negative/anodal exit 151 passes the top insulated ring 16 of battery pole group 13 tops and is welded on the bottom of described combination cover cap 12, and in this example, this negative/anodal exit 151 is welded on conductive plate 128 bottoms of described combination cover cap 12 through top insulated ring 16.
As shown in figure 10, the cannelure 112 that is h2 by roller groove technological forming height outside described battery barrel 11.This cannelure 112 is at the inner flange that compresses top insulated ring 16 that forms of battery barrel 11.The open end of described battery barrel 11 above cannelure 112 forms annular wall 111.
As shown in figure 11, bracing frame 14 is packed in the middle of described battery pole group 13.
In this example, before conductive plate 128 welding of negative/anodal exit 151 and combination cover cap 12 or afterwards, can inject electrolyte to the battery pole group 13 in battery barrel 11.
As shown in figure 12, the combination cover cap 12 that is highly h3 is placed on to the flange top in battery barrel 11.The conductive plate 128 of described combination cover cap 12 bottoms connects battery pole group 13 by negative/anodal exit 151.
As shown in Figure 13 and Figure 14, utilize external force F1 by annular wall 111 to the interior bending of battery barrel 11, described annular wall 111 is adjacent to the top board 121 at combination cover cap 12, thereby combination cover cap 12 is fixedly mounted on battery barrel 11.Now, battery total height be H+ Δ h=(h1+ Δ h)+h2+h3, wherein, the calibrated altitude that H is cylindrical battery.
As shown in Figure 15 and Figure 16, from the sealing end of battery exert pressure (F2), described pressure (F2) will be highly that cannelure and the combination cover cap of (h2+h3) shortens Δ h, the height of cannelure and combination cover cap is reduced to (h2+h3) ', that is (h2+h3) '=(h2+h3)-Δ h, after compression cannelure, cylindrical battery recover calibrated altitude H=(h1+ Δ h)+(h2+h3) '=(h1+ Δ h)+(h2+h3)-Δ h.Wherein, described pressure F2 acts in the annular wall after bending.
Specifically the roller slot seal lithium ion battery take model as 18650 is as example.This model cylindrical battery calibrated altitude H is 65 millimeters, and in traditional handicraft, the height of battery pole group is 58 millimeters, and in the present invention, the height of battery pole group is 59.5=58+1.5 millimeter; The height h2 tradition of its cannelure is 1.7 millimeters, adopts the height h2 ' of cannelure after technique of the present invention to be reduced to 0.1～0.2 millimeter.Adopt technique of the present invention, battery barrel selection can adopt than original high battery barrel more than 1.5 millimeters, this battery barrel part more than 1.5 millimeters exceeding increases chance highly for battery pole group provides, thereby increase the actual usage space of battery pole group, by increasing, the height of battery pole group is reached to the object that promotes battery capacity.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (8)
1. the cylindrical cell manufacturing method that can improve battery capacity, comprises the following steps:
The battery pole that is highly h1+ Δ h is assembled in the battery barrel of cylindrical battery;
The cannelure that is h2 at the open end forming height of described battery barrel;
The combination cover cap that is highly h3 is placed on to the upside of the ring groove in battery barrel, described combination cover cap comprises the conductive plate that connects battery pole group, the pressure protective device of conduction, the top board of thermistor and conduction, the conductive plate that described combination cover cap superposes successively, pressure protective device, thermistor and top board are combined from fastening around by insulating sealer, the below of described insulating sealer is provided with the ring of accommodating for fence conductive plate, described combination cover cap connects battery pole group, and by described combination cover cap fixing seal on battery barrel, now, battery total height be H+ Δ h=(h1+ Δ h)+h2+h3, wherein, H is the calibrated altitude of cylindrical battery,
From the sealing end of battery exert pressure (F2), described pressure (F2) will be highly that cannelure and the combination cover cap of (h2+h3) shortens Δ h, the height of cannelure and combination cover cap is reduced to (h2+h3) '=(h2+h3)-Δ h, after compression cannelure, described cannelure is at the inner flange that compresses top insulated ring that forms of battery barrel, cylindrical battery recover calibrated altitude H=(h1+ Δ h)+(h2+h3) '=(h1+ Δ h)+(h2+h3)-Δ h.
2. the cylindrical cell manufacturing method that improves battery capacity according to claim 1, it is characterized in that: described battery barrel forms annular wall at the open end of upside of the ring groove, after combination cover cap is placed on the upside of the ring groove of battery barrel, utilize external force (F1) by inside annular wall bending, the annular wall of described bending by described combination cover cap fixing seal in battery barrel.
3. the cylindrical cell manufacturing method that improves battery capacity according to claim 2, it is characterized in that: before battery pole is assembled into battery barrel, at described battery barrel bottom installing insulated ring, from battery pole group, draw positive/negative exit downwards, described positive/negative exit is walked around insulated ring and is contacted with the bottom of battery barrel.
4. the cylindrical cell manufacturing method that improves battery capacity according to claim 3, it is characterized in that: at the top of described battery pole group installing insulated ring, from battery pole group, upwards draw negative/anodal exit, described bear/anodal exit passes the insulated ring of battery pole group top and is welded on the bottom of described combination cover cap.
5. the cylindrical cell manufacturing method that improves battery capacity according to claim 4, is characterized in that: bracing frame is packed in the middle of described battery pole group.
6. according to the cylindrical cell manufacturing method of the improved battery capacity described in claim 3 or 4, it is characterized in that: the battery pole group in battery barrel is injected electrolyte.
7. the cylindrical cell manufacturing method that improves battery capacity according to claim 1; it is characterized in that: described pressure protective device comprises the connecting portion that welds the elastic portion of conductive plate and extend from elastic portion, and described elastic portion and connecting portion junction offer protection breach.
8. the cylindrical cell manufacturing method that improves battery capacity according to claim 1, is characterized in that: pressure F2 acts in the annular wall after bending.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910108534.5A CN101938012B (en) | 2009-06-29 | 2009-06-29 | Method for manufacturing cylindrical battery capable of improving battery capacity |
| PCT/CN2010/072656 WO2011000239A1 (en) | 2009-06-29 | 2010-05-12 | A manufacturing method for cylindrical battery imporving the capacity of battery |
| PCT/CN2010/074081 WO2011000267A1 (en) | 2009-06-29 | 2010-06-18 | Method for manufacturing cylindrical battery capable of improving battery capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910108534.5A CN101938012B (en) | 2009-06-29 | 2009-06-29 | Method for manufacturing cylindrical battery capable of improving battery capacity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101938012A CN101938012A (en) | 2011-01-05 |
| CN101938012B true CN101938012B (en) | 2014-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910108534.5A Active CN101938012B (en) | 2009-06-29 | 2009-06-29 | Method for manufacturing cylindrical battery capable of improving battery capacity |
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| Country | Link |
|---|---|
| CN (1) | CN101938012B (en) |
| WO (2) | WO2011000239A1 (en) |
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| US8989821B2 (en) | 2011-08-31 | 2015-03-24 | Apple Inc. | Battery configurations for electronic devices |
| US9343716B2 (en) | 2011-12-29 | 2016-05-17 | Apple Inc. | Flexible battery pack |
| US9812680B2 (en) | 2012-08-30 | 2017-11-07 | Apple Inc. | Low Z-fold battery seal |
| US9136510B2 (en) | 2012-11-26 | 2015-09-15 | Apple Inc. | Sealing and folding battery packs |
| US9593969B2 (en) | 2013-12-27 | 2017-03-14 | Apple Inc. | Concealed electrical connectors |
| US9479007B1 (en) | 2014-02-21 | 2016-10-25 | Apple Inc. | Induction charging system |
| US20150255776A1 (en) | 2014-03-06 | 2015-09-10 | Apple Inc. | Battery Pack System |
| US9455582B2 (en) | 2014-03-07 | 2016-09-27 | Apple Inc. | Electronic device and charging device for electronic device |
| US9917335B2 (en) | 2014-08-28 | 2018-03-13 | Apple Inc. | Methods for determining and controlling battery expansion |
| CN104900820B (en) * | 2015-06-12 | 2017-03-22 | 福建南平南孚电池有限公司 | Secondary electrochemical battery sealing body with encapsulated type chip shield structure and battery |
| US10637017B2 (en) | 2016-09-23 | 2020-04-28 | Apple Inc. | Flexible battery structure |
| CN111082148B (en) * | 2019-12-17 | 2022-03-18 | 深圳先进储能材料国家工程研究中心有限公司 | Secondary battery based on needle-shaped pin battery core and hidden interface |
| CN111900451B (en) * | 2020-06-24 | 2022-05-10 | 先进储能材料国家工程研究中心有限责任公司 | Conical surface sealing type cylindrical battery and preparation method thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2011000239A1 (en) | 2011-01-06 |
| WO2011000267A1 (en) | 2011-01-06 |
| CN101938012A (en) | 2011-01-05 |
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