CN101938012A - 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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- CN101938012A CN101938012A CN2009101085345A CN200910108534A CN101938012A CN 101938012 A CN101938012 A CN 101938012A CN 2009101085345 A CN2009101085345 A CN 2009101085345A CN 200910108534 A CN200910108534 A CN 200910108534A CN 101938012 A CN101938012 A CN 101938012A
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- cover cap
- point group
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 238000007906 compression Methods 0.000 claims abstract description 7
- 230000006835 compression Effects 0.000 claims abstract description 6
- 230000001681 protective effect Effects 0.000 claims description 22
- 238000005452 bending Methods 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 6
- 239000003792 electrolyte Substances 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 abstract description 11
- 238000003825 pressing Methods 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 description 9
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect 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
- 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)
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (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 and make the 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, is arranged on the height that forms of reeling in the battery barrel 1 is the battery utmost point group 3 of h1, the parts such as cylindric bracing frame 4 that are installed in the combination cover cap 2 on battery barrel 1 top and are arranged on battery utmost point group 3 centres.Battery barrel 1 bottom also be provided for usually with just/bottom insulation circle 7 that negative pole exit 52 and battery utmost point group separate, the top of battery barrel is provided with and is used for top insulated ring 6 that battery utmost point group 3 and combination cover cap 2 insulation are separated.The height that this top insulated ring 6 is pressed in the top of battery utmost point group 3 and is stuck in moulding on the battery barrel 1 is the cannelure 12 times of 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 also is used for putting into bracing frame 4 from the open end of battery barrel 1.In the existing cylindrical battery manufacturing process, generally by roller groove processes moulding cannelure 12, in moulding cannelure 12, it highly is the annular wall 11 of the combination cover cap 2 of h3 that cannelure 12 tops of battery barrel 1 then are formed for clamping.During packaged battery, combination cover cap is placed on the top of top insulated ring 6, simultaneously upwardly extending bearing/anodal exit 51 is welded on the combination cover cap 2, afterwards, annular wall 11 bendings 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 comprise extraction electrode top board 21, be used for thermistor 23, explosion-proof pressure protective device 24 and the conductive plate 25 that welds together with pressure protective device 24 at overheat condition incision outage stream.Described top board 21, thermistor 23, pressure protective device 24 and conductive plate 25 are closely together by insulating sealer 22.
To shown in Figure 6, the concrete steps of making cylindrical battery in the prior art generally comprise as Fig. 1:
At first making battery barrel 1, place the bottom of battery barrel 1 will be just/bottom insulation circle 7 that negative pole exit 52 and battery utmost point group 3 separate; In battery barrel 1, put into then and highly be the battery utmost point group 3 of h1, and with downward just/negative pole exit 52 walks around bottom insulation circle 7 and is connected with bottom electrode.
Then as shown in Figure 1, top insulated ring 6 is placed on the upper surface of battery utmost point group 3, and makes the negative/anodal exit 51 that extends straight up pass the lug hole of top insulated ring 6.
Afterwards, as shown in Figure 2, on battery barrel 1, utilize rolling process to form the cannelure 1 of height for h2, this cannelure 12 is at the battery barrel 1 inner flange (not indicating) that is pressed on the top insulated ring 6 that forms, the flange 1 of this battery barrel 1 inside is pressed on the battery utmost point group 3 top insulated ring 6, forms annular wall 11 at the top of battery barrel 1 simultaneously.
Then, make bracing frame 4 pass the inside center that battery utmost point group 3 is stretched in lug hole on the top insulated ring 6 as shown in Figure 3, and form with battery utmost point group 3 and to closely cooperate.
At last, the free end of upwardly extending bearing/anodal exit 51 is welded on conductive plate 25 bottoms of combination cover cap 2, behind battery barrel 1 inner injection electrolyte, and combination cover cap 2 is placed on the open end (order of above step is decided on concrete technology) of battery barrel 1, and make the annular wall 11 at battery barrel 1 top center on 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 cylindrical battery shown in Figure 6.
Yet, battery capacity and interior roll around the volume of battery utmost point group 3 directly related.The volume of battery utmost point group 3 is directly proportional with battery utmost point 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 bigger comprises battery utmost point group 3 and combination cover cap 2, and the height of battery utmost point group 3 is h1, and the height of combination cover cap 2 is h3.Combination cover cap 2 has been born multiple functions such as overtemperature protection, pressure protect, sealing and insulation, and functional part is a lot of in the combination.Being used for the height of split cell utmost point group 3 and combination cover cap 2 simultaneously is that cannelure 12 structures of h2 have also taken bigger battery barrel 1 inner space.Existing various size battery whole height H are invariable standard values, and cell integrated haply height H equals height h1 and the height h2 of cannelure and the height h3 sum of combination cover cap 2 of battery utmost point group 3, H=h1+h2+h3.Therefore, in the existing cylindrical cell manufacturing method, the inner space utilance of battery barrel 1 is lower, and in order to satisfy the demand of electronic product to jumbo battery, battery capacity is still waiting to promote.
Summary of the invention
The technical problem to be solved in the present invention is to remedy above-mentioned the deficiencies in the prior art, and a kind of inside battery space that makes full use of is provided, and 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 may further comprise the steps: will highly be assembled in the battery barrel of cylindrical battery for the battery utmost point of h1+ Δ h; Open end moulding at described battery barrel highly is the cannelure of h2; To highly be placed on upside of the ring groove in the battery barrel for the combination cover cap of h3, described combination cover cap connects battery utmost point group, and with described combination cover cap fixing seal on battery barrel, at this moment, the battery total height is 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 highly be that the 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 the compression cannelure, cylindrical battery recovers 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, combination cover cap is placed on after the upside of the ring groove of battery barrel, utilizes external force with the inside bending of annular wall, the annular wall of described bending with described combination cover cap fixing seal in battery barrel.
Specifically, before the battery utmost point is assembled into battery barrel, at described battery barrel bottom installing insulated ring, just drawing downwards/the negative pole exit from battery utmost point group, just described/negative pole exit is walked around insulated ring and is contacted with the bottom of battery barrel.
At the top of described battery utmost point group installing insulated ring, upwards draw negative/anodal exit from battery utmost point group, described bearing/anodal exit passes the insulated ring of battery utmost point group top and is welded on the bottom of described combination cover cap.
Then, bracing frame is packed in the middle of the described battery utmost point group.
In this example, before negative/anodal exit and combination cover cap welding or afterwards, battery utmost point group injection electrolyte that can be in battery barrel.
Preferably; described combination cover cap comprises the top board of pressure protective device, thermistor and the conduction of the conductive plate that connects battery utmost point group, conduction, and the conductive plate that described combination cover cap superposes successively, pressure protective device, thermistor and top board are combined from fastening on every side by insulating sealer.
Concrete, described pressure protective device comprises elastic portion of welding conductive plate and the connecting portion that extends from elastic portion, described elastic portion and connecting portion junction offer the protection breach.
Described pressure F2 acts on the annular wall after the bending.
The present invention's beneficial effect compared with prior art is: the 1) cylindrical cell manufacturing method that improves battery capacity of the present invention, compression process is passed through in use, thereby the height (h2+h3) of cannelure on the battery barrel and combination cover cap is reduced to (h2+h3) ', thereby make the height h1 of battery utmost point group increase Δ h, directly increased the developed area of battery utmost point group 13, thereby the lifting battery capacity makes full use of the inside battery space; 2) cylindrical cell manufacturing method that improves battery capacity of the present invention, can significantly promote battery capacity, it such as model 18650 roller slot seal lithium ion battery, this model cylindrical battery calibrated altitude H is 65 millimeters, the height of battery utmost point group is 58 millimeters in the traditional handicraft, and the height of battery utmost point group is the 59.5=58+1.5 millimeter among the present invention; The height h2 tradition of its cannelure is 1.7 millimeters, adopts that the height h2 ' of cannelure is reduced to 0.1～0.2 millimeter after the technology of the present invention.Adopt technology of the present invention, the battery barrel selection can be adopted than original high battery barrel more than 1.5 millimeters, this battery barrel more than 1.5 millimeters that exceeds part provides the chance that increases height for battery utmost point group, thereby increase the actual usage space of battery utmost point group, reach the purpose that promotes battery capacity by the height that increases battery utmost point group.
Description of drawings
Fig. 1 is in the existing cylindrical cell manufacturing method putting into the top insulated ring cutaway view of battery barrel;
Fig. 2 is the cylindrical battery cutaway view after the existing cylindrical cell manufacturing method central roll groove technology;
Fig. 3 is in the existing cylindrical cell manufacturing method putting into bracing frame the cylindrical battery cutaway view of utmost point group centre;
Fig. 4 is in the existing cylindrical cell manufacturing method being placed on combination cover cap the cutaway view at battery barrel top;
Fig. 5 is a cutaway view of integrating combination cover cap in the existing cylindrical cell manufacturing method;
Fig. 6 is the height distribution schematic diagram of battery component in the existing cylindrical cell manufacturing method;
Fig. 7 is the cutaway view of the combination cover cap in the existing cylindrical cell manufacturing method;
Fig. 8 is the cutaway view of combination cover cap in the cylindrical cell manufacturing method of the present invention;
Fig. 9 is for putting into bottom and top insulated ring in the cylindrical cell manufacturing method of the present invention the cutaway view of battery barrel;
Figure 10 is the cylindrical battery cutaway view after the cylindrical cell manufacturing method central roll groove technology of the present invention;
Figure 11 is in the cylindrical cell manufacturing method of the present invention putting into bracing frame the cylindrical battery cutaway view of utmost point group centre;
Figure 12 is for inserting the cutaway view of combination cover cap in the cylindrical cell manufacturing method of the present invention;
Figure 13 is for applying the battery cutaway view of external force F1 assembling combination cover cap in the cylindrical cell manufacturing method of the present invention.
Figure 14 is the height distribution schematic diagram of battery component in the cylindrical cell manufacturing method of the present invention.
Figure 15 is the battery cutaway view of the F2 compression cannelure of exerting pressure in the cylindrical cell manufacturing method of the present invention.
Figure 16 is after cannelure is compressed in the cylindrical cell manufacturing method of the present invention, the height distribution schematic diagram of battery component.
Embodiment
Also in conjunction with the accompanying drawings the present invention is described in further details below by concrete execution mode.
The present invention relates to a kind of cylindrical cell manufacturing method that improves battery capacity, this circular batteries manufacture method adopts will be highly packs in the battery barrel 11 of cylindrical battery for the battery utmost point group 13 of h1+ Δ h; Open end moulding at described battery barrel 11 highly is the cannelure 112 of h2; For the combination cover cap 12 of h3 is placed on cannelure 112 tops in the battery barrel 11, described combination cover cap 12 connects battery utmost point groups 13 with highly, and with described combination cover cap 12 fixing seals on battery barrel 11.In this example, this battery barrel 11 highly is H+ Δ h=(h1+ Δ h)+h2+h3, and wherein, H is the calibrated altitude of cylindrical battery.
Below specifically introduce technical scheme of the present invention.
Please refer to Fig. 1 to Figure 16, the height that the cylindrical battery in the present embodiment mainly comprises battery barrel 11, be arranged on battery utmost point group 13 that the height that form of reeling in the battery barrel 11 are h1+ Δ h, be installed in battery barrel 11 tops is the combination cover cap 12 of h3 and is arranged on parts such as cylindric bracing frame 14 in the middle of the battery utmost point group 13.In this example, this battery barrel 11 highly is H+ Δ h=(h1+ Δ h)+h2+h3, and wherein, H is the calibrated altitude of cylindrical battery.
Described battery barrel 11 highly is the cannelure 112 of h2 by roller groove technology in battery barrel 11 outside moulding.In the present embodiment, this roller groove technology 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, goes out uniform annular groove at the outside roller of battery barrel.This cannelure 112 forms the flange that compresses top insulated ring 16 in battery barrel 11 inside, and the open end of described battery barrel 11 above cannelure 112 forms annular wall 111.
In the present embodiment, described combination cover cap 12 comprises the conductive plate 128 that connects battery utmost point group 13, pressure protective device 124, the thermistor 123 of conduction and the top board 121 that conducts electricity.The conductive plate 128 that described combination cover cap 12 superposes successively, pressure protective device 124, thermistor 123 and top board 121 are combined from fastening on every side by insulating sealer 122.Conductive plate 128 bottoms are provided with some pads, this pad and battery utmost point group 13 upwardly extending bearing/anodal exit 151 welding.Conductive plate 128 welds together with pressure protective device 124.
The below of described insulating sealer 122 is provided with and is used for the ring of accommodating of fence conductive plate 128.
Adopted thermistor 123 to connect pressure protective device 124 and top board 121 in this example.Lithium ion cylinder shape battery is because light weight and high-energy-density, has to be 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 that battery is made many problems of paying close attention to always.For example, battery unit becomes and overcharges, and the electrode that lithium metal may be plated to battery unit gets on, because lithium metal has inflammable characteristic and initiation fire, when battery temperature becomes too high, gets rid of toxic gas.So need thermistor 123 as safety guard, raise when overheated at battery temperature, temperature is between 80 to 90 degrees centigrade the time in the practice, and the resistance of this thermistor 123 raises and cuts off electric current, prevents disaster.
Consider from fail safe in this example, further adopted pressure protective device 124, this pressure protective device 124 is destructive protective devices.In general, the pressure protective device of battery need tolerate certain pressure, and when the withstand voltage limit of inner pressure of battery overpressure protective device, pressure protective device is made the battery pressure release by internal sabotage, prevents battery explosion.Described pressure protective device 124 comprise the elastic portion 242 of welding conductive plate 128 and from elastic portion 242 to around the connecting portion 246 that extends, 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 the battery pressure release to prevent blast; but from then on battery is damaged, and 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 may further comprise the steps:
As shown in Figure 9, at described battery barrel 11 bottoms installings bottom insulation circle 17, will highly pack in the battery barrel 11 of cylindrical battery for the battery utmost point group 13 of h1+ Δ h; Just drawing downwards/negative pole exit 152 from battery utmost point group 13, just described/negative pole exit 152 is walked around insulated ring 17 and is contacted with the bottom of battery barrel 11.Installing top, described battery utmost point group 13 tops insulated ring 16.Further, upwards draw negative/anodal exit 151 from battery utmost point group 13.Described bearing/anodal exit 151 passes the top insulated ring 16 of battery utmost point group 13 tops and is welded on the bottom of described combination cover cap 12, and in this example, this negative/anodal exit 151 passes conductive plate 128 bottoms that top insulated ring 16 is welded on described combination cover cap 12.
As shown in figure 10, outside described battery barrel 11, be the cannelure 112 of h2 by roller groove technological forming height.This cannelure 112 is at the battery barrel 11 inner flanges that compress top insulated ring 16 that form.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 the described battery utmost point group 13.
In this example, before conductive plate 128 welding of negative/anodal exit 151 and combination cover cap 12 or afterwards, can be to the 13 injection electrolyte of the battery utmost point group battery barrel 11 in.
As shown in figure 12, will highly be placed on flange top in the battery barrel 11 for the combination cover cap 12 of h3.The conductive plate 128 of described combination cover cap 12 bottoms connects battery utmost point group 13 by negative/anodal exit 151.
As Figure 13 and shown in Figure 14, utilize external force F1 with annular wall 111 bending in 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 the battery barrel 11.At this moment, the battery total height is H+ Δ h=(h1+ Δ h)+h2+h3, and wherein, H is the calibrated altitude of cylindrical battery.
As Figure 15 and shown in Figure 16, from the sealing end of battery exert pressure (F2), described pressure (F2) will highly be that the 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 the compression cannelure, cylindrical battery recovers calibrated altitude H=(h1+ Δ h)+(h2+h3) '=(h1+ Δ h)+(h2+h3)-Δ h.Wherein, described pressure F2 acts on the annular wall after the bending.
Be that 18650 roller slot seal lithium ion battery is an example specifically with model.This model cylindrical battery calibrated altitude H is 65 millimeters, and the height of battery utmost point group is 58 millimeters in the traditional handicraft, and the height of battery utmost point group is the 59.5=58+1.5 millimeter among the present invention; The height h2 tradition of its cannelure is 1.7 millimeters, adopts that the height h2 ' of cannelure is reduced to 0.1～0.2 millimeter after the technology of the present invention.Adopt technology of the present invention, the battery barrel selection can be adopted than original high battery barrel more than 1.5 millimeters, this battery barrel more than 1.5 millimeters that exceeds part provides the chance that increases height for battery utmost point group, thereby increase the actual usage space of battery utmost point group, reach the purpose that promotes battery capacity by the height that increases battery utmost point group.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the 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 (9)
1. cylindrical cell manufacturing method that can improve battery capacity may further comprise the steps:
To highly be assembled in the battery barrel of cylindrical battery for the battery utmost point of h1+ Δ h;
Open end moulding at described battery barrel highly is the cannelure of h2;
To highly be placed on upside of the ring groove in the battery barrel for the combination cover cap of h3, described combination cover cap connects battery utmost point group, and with described combination cover cap fixing seal on battery barrel, at this moment, the battery total height is 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 highly be that the 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 the compression cannelure, cylindrical battery recovers 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, combination cover cap is placed on after the upside of the ring groove of battery barrel, utilize external force (F1) with the inside bending of annular wall, the annular wall of described bending with 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 the battery utmost point is assembled into battery barrel, at described battery barrel bottom installing insulated ring, just drawing downwards/the negative pole exit from battery utmost point group, just described/negative pole 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 utmost point group installing insulated ring, upwards draw negative/anodal exit from battery utmost point group, described bearing/anodal exit passes the insulated ring of battery utmost point 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 the described battery utmost point group.
6. according to claim 3 or the 4 described cylindrical cell manufacturing methods that improve battery capacity, it is characterized in that: the battery utmost point 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 combination cover cap comprises the top board of pressure protective device, thermistor and the conduction of the conductive plate that connects battery utmost point group, conduction, and the conductive plate that described combination cover cap superposes successively, pressure protective device, thermistor and top board are combined from fastening on every side by insulating sealer.
8. the cylindrical cell manufacturing method that improves battery capacity according to claim 7; it is characterized in that: described pressure protective device comprises elastic portion of welding conductive plate and the connecting portion that extends from elastic portion, and described elastic portion and connecting portion junction offer the protection breach.
9. the cylindrical cell manufacturing method that improves battery capacity according to claim 7 is characterized in that: pressure F2 acts on the annular wall after the 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 true CN101938012A (en) | 2011-01-05 |
| CN101938012B CN101938012B (en) | 2014-04-30 |
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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 |
| CN114399012B (en) | 2019-04-17 | 2024-08-06 | 苹果公司 | Wireless locatable tag |
| 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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| JP2002048241A (en) * | 2000-08-03 | 2002-02-15 | Seiko Instruments Inc | Gasket |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN101938012B (en) | 2014-04-30 |
| WO2011000239A1 (en) | 2011-01-06 |
| WO2011000267A1 (en) | 2011-01-06 |
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