CN1310346C - Closed cell and method for manufacturing the same - Google Patents
Closed cell and method for manufacturing the same Download PDFInfo
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- CN1310346C CN1310346C CNB011384395A CN01138439A CN1310346C CN 1310346 C CN1310346 C CN 1310346C CN B011384395 A CNB011384395 A CN B011384395A CN 01138439 A CN01138439 A CN 01138439A CN 1310346 C CN1310346 C CN 1310346C
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- Prior art keywords
- fluid injection
- battery case
- gap
- pressure
- electrolyte
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- 238000000034 method Methods 0.000 title claims description 33
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 238000003466 welding Methods 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 238000002347 injection Methods 0.000 claims description 124
- 239000007924 injection Substances 0.000 claims description 124
- 239000012530 fluid Substances 0.000 claims description 117
- 239000003792 electrolyte Substances 0.000 claims description 61
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 239000008151 electrolyte solution Substances 0.000 abstract description 35
- 239000000243 solution Substances 0.000 abstract 2
- 230000006837 decompression Effects 0.000 description 42
- 239000007789 gas Substances 0.000 description 19
- 239000007788 liquid Substances 0.000 description 18
- 238000010586 diagram Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 230000033228 biological regulation Effects 0.000 description 6
- 238000005755 formation reaction Methods 0.000 description 6
- 230000001678 irradiating effect Effects 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 4
- 230000037452 priming Effects 0.000 description 4
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 2
- 239000011149 active material Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- QGHDLJAZIIFENW-UHFFFAOYSA-N 4-[1,1,1,3,3,3-hexafluoro-2-(4-hydroxy-3-prop-2-enylphenyl)propan-2-yl]-2-prop-2-enylphenol Chemical group C1=C(CC=C)C(O)=CC=C1C(C(F)(F)F)(C(F)(F)F)C1=CC=C(O)C(CC=C)=C1 QGHDLJAZIIFENW-UHFFFAOYSA-N 0.000 description 1
- 240000004859 Gamochaeta purpurea Species 0.000 description 1
- 229910013870 LiPF 6 Inorganic materials 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 241000220317 Rosa Species 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Images
Classifications
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- 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
Landscapes
- Filling, Topping-Up Batteries (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The present invention is a sealed type battery to supply electrolytic solution without installing an exclusive solution supplying port. In the sealed type battery wherein a cap body is mounted on an opening part of a battery can and a sealing is made by welding, when a seal is made of a meeting part between surroundings of the cap body and the opening part of the battery can, a gap part is formed leaving a part, and the gap part is sealed after supplying the solution of the electrolytic solution from the gap part.
Description
Technical field
The present invention relates to the enclosed-type battery that the lid by welding battery case opening configuration seals, particularly be characterised in that the enclosed-type battery and the manufacture method thereof of the fluid injection of electrolyte.
Background technology
In enclosed-type battery, known have at the battery case opening by sealing ring lid is installed, the battery that seals with battery case riveted joint one, the perhaps enclosed-type battery that behind battery case opening configuration lid, seals by methods such as laser weldings.
Enclosed-type battery as the power supply of miniaturized electronics etc. uses uses the square enclosed-type battery that can effectively utilize the battery accommodating space widely.
For example, the square lithium ion battery that miniaturized electronics is used, the anode electrode and the negative electrode that apply the active material manufacturing on positive electrode collector and negative electrode collector respectively are stacked by dividing plate, and the cell device of reeling and forming, after being housed inside in the battery case, seal at battery case opening configuration lid, behind the injecting electrolytic solution mouth injection electrolyte that is arranged at lid or battery case, at the injecting electrolytic solution mouth cap liner is set, between welding cap liner and liquid injection port wall, seal.
Fig. 9 is the figure of the assembling procedure of the existing enclosed-type battery of explanation.
Shown in Fig. 9 (A), cell device is contained in the battery case 2, the lid 4 of the pressure relief valve of cell fracture etc. etc. when having injecting electrolytic solution mouth 9, external electrode leading-out terminal 3 and preventing that cell internal pressure from rising, by methods such as laser 5 irradiation weldings, after being installed in the opening on battery case 2 tops, shown in Fig. 9 (B), the liquid injecting mouth 7 of injecting electrolytic solution device is installed airtightly at the injecting electrolytic solution mouth 9 of lid 4 settings, the air of battery case inside is vented to after the predetermined pressure relief degree, injects the electrolyte 8 of scheduled volumes from liquid injecting mouth 7.
Then, shown in Fig. 9 (C), cap liner 10 is installed, is carried out the welding of laser 5, the injecting electrolytic solution mouth is sealed at injecting electrolytic solution mouth 9.
But in this enclosed-type battery, for the injecting electrolytic solution mouth is sealed, the operation that the cap liner of different shape such as tabular, bar-shaped, spherical is installed at the injecting electrolytic solution mouth is absolutely necessary.Therefore, if cap liner can not correctly be installed in liquid injection port, then there is the bad such problem of sealing.Though the methods such as direction of illumination that proposed temporary fixed cap liner or regulated irradiating laser when sealing, the problem that is to use cap liner to seal to be produced still fails to solve.Particularly, the injecting electrolytic solution mouth of compact battery is less, and cap liner is also less, and in the automatic transportation of pin shape, little cap liner such as spherical, it is bad to be easy to generate transportation, must confirm whether cap liner correctly is installed in the operation of injecting electrolytic solution mouth.
And, after generating element etc. was contained in battery case in when battery was made, filling electrolyte disposed the lid that external connection terminal etc. is installed at the battery case opening then, carry out method for sealing by laser welding and also be considered, but can not implement such method in the reality.This is because following reason causes, must consider by battery case opening integral body being carried out laser welding when sealing, produce a large amount of heat and make the electrolyte deterioration, and the danger that produces pore because of electrolyte attached, be not installed in the situation of fixed position at lid, when electrolyte uses inflammable substance, there is the danger of breaking out of fire etc. in laser radiation battery case inside.
Summary of the invention
The object of the present invention is to provide a kind of manufacture method of enclosed-type battery, need not the series of processes such as sealing process of in liquid injection port cap liner being installed, confirming installation, welding cap liner.
The invention provides a kind of manufacture method of enclosed-type battery, it is the manufacture method of loading lid and sealing by welding by opening at battery case, it is characterized in that, hold after the cell device in the battery case, load lid at the battery case opening, the state at the part formation position, gap of the binding site of lid and battery case opening is after sealing by welding, inject electrolyte from the position, gap, by welding the position, gap is sealed then.
In the manufacture method of above-mentioned enclosed-type battery, at the indoor fluid injection groove that is provided with of fluid injection, make the clearance portion position in the bottom, the electrolyte for the treatment of fluid injection injects the fluid injection groove, the pressure that fluid injection is indoor reduces pressure at least once below atmospheric pressure, remain on the above pressure of atmospheric pressure or atmospheric pressure, carry out the fluid injection of electrolyte.
Description of drawings
Fig. 1 is the key diagram of the manufacturing process of enclosed-type battery of the present invention.
Fig. 2 is the key diagram that the position, gap forms an example of position.
Fig. 3 is that the electrolyte filling method that changes the priming device that carries out fluid injection according to pressure is used in explanation.
Fig. 4 (A) and 4 (B) have showed the example of other injecting electrolytic solution device.
Fig. 5 is the indoor key diagram that changes the decompression rate produced and an example of decompression degree because of pressure of the fluid injection of injecting electrolytic solution device, and the longitudinal axis is represented pressure, and transverse axis is represented the elapsed time.
Fig. 6 is the perspective view of explanation injecting electrolytic solution groove.
Fig. 7 is the figure of an example of explanation unit fluid injection groove.
Fig. 8 is the key diagram of formation position at position, gap of the battery of embodiment.
Fig. 9 is the key diagram of the assembling procedure of existing enclosed-type battery.
Embodiment
According to the present invention, as lid in the configuration of battery case opening, employing is at the privileged site of lid, between battery case internal face and lid, form the position, gap, leave the position, gap thus, after by methods such as laser weldings battery case and lid being sealed, inject electrolyte from position, unsealed gap, by the position, gap is sealed, make enclosed-type battery afterwards.
Therefore, can provide a kind of enclosed-type battery according to the present invention, part beyond battery case opening and lid binding site is not the closure part of representative to weld the injecting electrolytic solution mouth that seals by laser after the fluid injection.And enclosed-type battery of the present invention is characterised in that, need not at lid or battery case special-purpose injecting electrolytic solution mouth, configuration cap liner and sealing process to be set.
Below with reference to description of drawings the present invention.
Fig. 1 is the key diagram of the manufacturing process of enclosed-type battery of the present invention.
Shown in the perspective view of Fig. 1 (A), enclosed-type battery 1 of the present invention, opening at the battery case 2 that holds cell device, the lid 4 that has disposed conductive connection terminal 3 is installed by insulating material, in the binding site irradiating laser 5 formation closure part 6 of battery case and lid, between battery case wall and lid, be provided with and have the part in gap,, form position, gap 11 at gap portion irradiating laser not.
Then, shown in Fig. 1 (B), set head for injecting electrolytic solution 7, inject electrolyte 8 at position, gap 11.Be preferably in head for injecting electrolytic solution 7 and be used in combination decompressor, inject electrolyte after extracting the gas remove in the battery case out, so the quick filling electrolyte of subtlety of the cell device that can hold to battery case inside.
Shown in Fig. 1 (C), after the injecting electrolytic solution,, finish sealing of enclosed-type battery to position, gap 11 irradiating lasers 5.
In enclosed-type battery of the present invention, preferably by processing to battery case or lid, make and often form the interior gap of certain limit between battery case and the lid, especially, form the position, gap and preferably the little part of width is set, so that when being disposed at the battery case opening, form the position, gap in the part of lid.
Fig. 2 is the key diagram that the position, gap forms an example of position.
Fig. 2 (A) is a plane graph to (D), and a lid size part is less than the formed space of battery case internal face, because the binding site of battery case and lid usually forms the gap in same position, so this part can be used as position, gap 11.During by metal processing and manufacturing lid, use predetermined mould can easily make such lid.The formation position in gap no matter be which part can, but preferably the position through being everlasting same forms the gap, with this part as the position, gap.
And, the size in gap (width) is 10-150 μ m preferably, if gap size is less than 10 μ m, then inject electrolyte and need certain hour from the position, gap, so it is undesirable, on the other hand, in situation, be easy to generate the bad such problems of welding such as pore when having laser seal in closure part greater than 150 μ m.
If it is big that the size at position, gap is a width, then, can shorten manufacturing time, so favourable because injecting electrolytic solution speed is fast.But when sealing by laser welding, owing to may there be the problem that produces pore etc., so this moment is by methods such as pushing positions, battery case gap, after the size at position, gap is dwindled, carry out laser welding, perhaps under the state at the position, gap that pushes battery case, carry out laser welding, can make the characteristic of closure part good.
And, because the length in gap also influences the fluid injection speed of electrolyte, so from the viewpoint of the fluid injection speed of electrolyte, the length in gap is longer for well.But because can electrolyte leakage when having the battery of fluid injection to use, so the perhaps long problem of closure part after the fluid injection be length 3-10mm preferably.
In the battery of the present invention, can formed gap be installed by head for injecting electrolytic solution, after decompression in the battery case, carry out the fluid injection of electrolyte again at the position, gap between battery case internal face and the lid.
And the applicant is willing to propose in 2000-305865 number the spy, and opening preferably is arranged in electrolyte, uses the priming device of change system internal pressure, carries out the fluid injection of electrolyte.In the method for existing installation filling head, must prepare filling head corresponding to position, gap shape, but in the method, because the interstitial site of injecting electrolyte can be set under liquid level of electrolyte, so the fluid injection of electrolyte can not rely on the shape in gap etc.
Fig. 3 is that the electrolyte filling method that changes the priming device that carries out fluid injection according to pressure is used in explanation.
Injecting electrolytic solution device 21 has fluid injection chamber 24, its inner fluid injection groove 23 that is provided with a plurality of unit fluid injection grooves 22, and fluid injection chamber 24 combines with the pressure regulation device 25 that can adjust the fluid injection room pressure arbitrarily.Pressure regulation device 25 has can be fluid injection chamber 24 internal pressures reduce pressure exhaust apparatus 26, atmospheric rilief valve 27 below the atmospheric pressure.
Leave the battery case 2 at position, gap 11 in a part, its position, gap 11 is positioned at the bottom, a plurality of such battery cases are placed on the set unit fluid injection groove 22 of fluid injection groove 23 that injects electrolyte 9, the exhaust apparatus 26 of operating pressure adjusting device 25 makes the pressure decompression in the fluid injection chamber 24 and keeps certain hour afterwards.
Then, open atmospheric rilief valve 27, make pressure in the fluid injection chamber 24 after atmospheric pressure keeps the regular hour, the exhaust apparatus 26 of operating pressure adjusting device 25 once more, after making the pressure decompression in the fluid injection chamber 24, open atmospheric rilief valve 27, make the pressure in the fluid injection chamber 24 keep preset time at atmospheric pressure.
Like this, by changing the pressure in the fluid injection chamber 24, in the battery case 2 of decompression, inject electrolyte from position, gap 11.Inject after the electrolyte, from the indoor taking-up battery case of fluid injection.
Because the gap that forms at the position, gap can be fully little, so when the fluid injection groove was removed battery case, electrolyte can not spill from the position, gap.
Then, clean with organic solvent and to be attached with around the position, gap of electrolyte, can do the position, gap by laser welding and seal processing.Even the organic solvent that cleaning is used is sneaked into electrolyte and also can not had a negative impact, preferably use the solvent of evaporation rate piece, concrete can list diethyl carbonate.And, preferably use the few especially organic solvent of moisture.
Preferably consider decompression degree and the decompression retention time down that fluid injection is indoor to contain the big liquid of volatility according to the characteristic of the electrolyte that injects etc., in the situation according to decompression change mixing ratio, the retention time that is preferably in decompression state is the short period.
The decompression that fluid injection is indoor and open at atmospheric pressure, the number of times that under atmospheric pressure keeps preferably is more than 2 times at least.
And in the situation that repeatedly reduces pressure, later decompression degree is preferably set to such an extent that be lower than primary pressure for the second time, and decompression rate preferably also than for the first time fast, can improve fluid injection speed like this.
The method that changes pressure by the multistage is preferably adopted in maintenance under atmospheric pressure, is in atmospheric pressure in the resulting device, must take out the container after the fluid injection, after being not limited to keep under atmospheric any pressure, returning to and takes out behind the atmospheric pressure etc.
Fig. 4 has showed other injecting electrolytic solution device example.
Injecting electrolytic solution device 21 shown in Fig. 4 (A) has the fluid injection chamber 24 that its inside is provided with the fluid injection groove 23 of a plurality of unit fluid injection grooves 22 formations, and fluid injection chamber 24 combines with the pressure regulation device 25 that can at random adjust the fluid injection room pressure.Pressure regulation device 25 has exhaust apparatus 26 and atmosphere gas supply device 28, exhaust apparatus 26 can make reduce pressure pressure below the atmospheric pressure of the pressure in the fluid injection chamber 24, leave position, gap 11 and airtight battery case 2, position, gap 11 is positioned at its bottom, have in the fluid injection groove 23 of a plurality of unit fluid injection grooves 22 that inject electrolyte 9 and hold after the battery case 2, the exhaust apparatus 26 of operating pressure adjusting device 25, make the pressure decompression in the fluid injection chamber 24, keep after the scheduled time, open atmosphere gas and supply with valve 29, in fluid injection chamber 24, supply with predetermined atmosphere gas, after the maintenance scheduled time, close atmosphere gas and supply with valve 29.
The exhaust apparatus 26 of operating pressure adjusting device 25 once more, make the pressure decompression in the fluid injection chamber 24 after, open atmosphere gas and supply with valve 29.In fluid injection chamber 24, supply with atmosphere gas thus, keep preset time, in the battery case of decompression, inject electrolyte.Then, open atmospheric rilief valve door 27, behind the air displacement atmosphere gas, take out battery case from the fluid injection chamber, seal processing then at position, gap state up.
By using such injecting electrolytic solution device, owing to can supply with gases such as nitrogen, helium, carbon dioxide from the atmosphere gas feedway, form the atmosphere of these gases,, solve the problem of liquid-to-air contact so can in container, be full of the atmosphere of these gases.
Particularly,, the filling work procedure of these gases is not set then, can after battery seal, carries out leak detection if use helium etc. can be used for the special gas of leak detection.
And the injecting electrolytic solution device 21 shown in Fig. 4 (B) has the fluid injection chamber 24 that its inside is provided with the fluid injection groove 23 of a plurality of unit fluid injection grooves 22 formations, and fluid injection chamber 24 combines with the pressure regulation device 25 that can at random adjust the fluid injection room pressure.Pressure regulation device 25 has exhaust apparatus 26 and pressue device 30, exhaust apparatus 26 can make reduce pressure pressure below the atmospheric pressure of the pressure in the fluid injection chamber 24, leave position, gap 11 and airtight battery case 2, position, gap 11 is positioned at its bottom, hold after the battery case 2 in the unit fluid injection groove 22 of injection electrolyte 9, the exhaust apparatus 26 of operating pressure adjusting device 25, make the pressure decompression in the fluid injection chamber 24, keep after the scheduled time, utilize pressue device 30 that the indoor pressure of fluid injection is remained on more than the atmospheric pressure, by keeping the scheduled time, in the battery case of decompression, inject electrolyte.Also can carry out the decompression of fluid injection chamber 24 internal pressures repeatedly and remain on the operation of predetermined pressure.Then, open atmospheric rilief valve door 27, use the air displacement atmosphere gas, make the indoor atmospheric pressure that reaches of fluid injection.
Battery case after the fluid injection can be at the position, gap up state take out, seal processing.
And the pressue device 30 shown in Fig. 4 (B) also can combine with atmosphere gas feedway shown in Fig. 4 (A), supplies with the predetermined atmosphere gas of atmospheric pressure with upward pressure.
By making the indoor pressure that is pressurized to more than the atmospheric pressure of fluid injection like this, can improve the fluid injection speed of electrolyte.
Fig. 5 is the indoor key diagram that changes the decompression rate produced and an example of decompression degree because of pressure of the fluid injection of injecting electrolytic solution device, and the longitudinal axis is represented pressure, and transverse axis is represented the elapsed time.
In Fig. 5 (A), A represents the situation that primary decompression rate is big, and the speed of the gas that takes out in the container is big, and because of producing bubble, liquid overflows in container easily, so the decision decompression rate must be considered the wall face height of unit fluid injection groove etc.
At first, the decompression degree B that reduces pressure to and be scheduled to.Decompression degree B preferably is not the pressure below the vapour pressure under the temperature of the electrolyte that should inject, if the decompression degree is big, can become fluidized state, from unit fluid injection groove loss liquid.Then, behind the decompression degree B that arrival is scheduled to, return to atmospheric pressure, during predetermined retention time C, remain on atmospheric pressure.
Then, the decompression rate D with greater than primary decompression rate carries out the decompression operation second time, reduces pressure than the lower predetermined pressure relief degree E of degree of the decompression B first time.In this state, in battery case, inject the electrolyte of a great deal of.Thereby, in battery case, there is the situation of the parts of dividing plate, liquid such as dipping active material etc., even improve decompression degree, the increasing decompression rate can not produce from phenomenons such as unit fluid injection groove overflowing liquids yet.
Reach after the predetermined pressure relief degree E, pressure returns to atmospheric pressure, through taking out from container behind the predetermined retention time F.
And Fig. 5 (B) has showed that the decompression back remains on the pressure of decompression state in the predetermined time from B1 to B2, returns to atmospheric pressure after the maintenance scheduled time, and decompression remains on the example than last time bigger decompression degree from E1 to E2 once more.
Keep the method for the scheduled time at decompression state, the situation littler than the battery size of wanting fluid injection to the injecting electrolytic solution mouth, the tough situation of electrolyte is effective especially.
Fig. 6 is the perspective view of the fluid injection groove of explanation electrolyte.
And, each of fluid injection groove 23 divided the unit fluid injection groove 22 that forms, inject in inside under the state of electrolyte of scheduled volume that should fluid injection, even its size must guarantee that having held battery case electrolyte does not overflow yet, and the time to fluid injection chamber exhaust decompression, electrolyte bubbled when the gas in the battery case rose in electrolyte, and its degree of depth must guarantee not from unit fluid injection groove 22 loss electrolyte.
And Fig. 7 is the figure of an example of explanation unit fluid injection groove.Fig. 7 (A) is the cross section view of unit fluid injection groove, and Fig. 7 (B) is a plan view.
The inclination in the 32 best oriented centres, bottom of unit fluid injection groove 22, and the side wall surface 33 of unit fluid injection groove 22 is preferably formed as curved surface with binding site 34, so that reduce the residual quantity of liquid.
And bottom 32 is preferably formed as recessed position 35, so that when holding the battery case of wanting fluid injection, the outstanding positions such as external cabling terminal of battery case setting is included in, by forming recessed position, can guarantee from the fluid injection at position, gap.
The fluid injection groove should use and the little material of electrolyte wettability to be injected, and by using the little material of wettability, can reduce at the residual amount of liquid of fluid injection groove, so the loss amount of electrolyte is little.And the base material of fluid injection groove uses the big stable material of metal equal strength, then can be only at the fluid injection groove little material of electrolyte affinity inner-surface coated Yu to be injected.
As the little material of affinity, should be according to electrolyte to be injected and difference, but can use synthetic resin such as polypropylene, fluororesin.And, can use stainless steel and other metal materials to form lining as base material.
State the situation of utilizing pressure to change the method for fluid injection in battery case in the use, be provided with in the fluid injection groove of a plurality of unit fluid injection grooves, use has the quantitative priming device of a plurality of liquid injecting mouths, after injecting the electrolyte of scheduled volume, hold a plurality of battery cases for the treatment of fluid injection, the decompression and the pressure that carry out pre-determined number return to atmospheric operation, can once inject predetermined amount of liquid in a plurality of battery cases.
Following according to illustrated embodiment explanation the present invention.
Is that 29mm, minor face are the opening that 4.8mm constitutes on battery case top by long limit, installation has the top cover of electrode leads to client, forming long side is that 70 μ m, short brink are the gap of 55 μ m, make lid then as shown in Figure 8, wherein form the position, gap, a=0.02mm, b=3mm, reserve the c zone, seal, make battery case with position, gap by laser welding.
Then, be in inside dimension, wide 50mm, high 42mm, thick 12mm, the bottom is provided with in the unit fluid injection groove that holds the position of electrode leads to client of dark 0.8mm, injects and contains diethyl carbonate (DEC), ethylene carbonate (EC) and lithium hexafluoro phosphate (LiPF
6) 3.1 the gram electrolyte after, the position, gap of battery case after the bottom surface is put into, it is indoor to be installed in fluid injection, to the fluid injection indoor exhaust, the decompression degree arrives 0.005MPa constantly, after this decompression degree keeps 5 seconds, make the indoor pressure of fluid injection reach atmospheric pressure, after keeping 5 minutes, atmospheric pressure takes out battery case.Electrolyte can not fall from the injecting electrolytic solution mouth of battery case.
The quality of 10 battery case fluid injections front and back of electrolyte has been injected in detection, and reservoir quantity is as shown in table 1, can inject the electrolyte of average 3.00 grams.
Comparative Examples
Removal is carried out the fluid injection operation of electrolyte at the injecting electrolytic solution mouth of the 1mm of top cover setting with embodiment 1 the samely, detects the quality of the fluid injection front and back of 10 batteries that obtain, and on average reservoir quantity is 3.00 grams.
Table 1
Reservoir quantity (gram)
| | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |
| Embodiment | |||||||||||
| 1 | 2.98 | 3.02 | 2.99 | 3.01 | 3.00 | 2.99 | 3.01 | 3.00 | 3.00 | 3.00 | 3.00 |
| Comparative Examples 1 | 3.00 | 3.00 | 2.99 | 2.98 | 3.01 | 3.02 | 3.01 | 2.99 | 3.00 | 3.00 | 3.00 |
Enclosed-type battery of the present invention when the battery case opening is sealed, seals and leaves the position, gap, utilizes the position, gap that forms when injecting electrolyte, and the injecting electrolytic solution mouth needn't be set.And in the situation that the injecting electrolytic solution mouth is set, the indispensable cap liner that is used to stop up liquid injection port needn't exist when sealing, and makes sealing process simplify, and can solve cap liner simultaneously problems such as bad are installed.
And, change the injecting electrolytic solution method that is suitable for according to the pressure of fluid injection chamber, can be to a large amount of battery case fluid injections in the single treatment operation, so with compare to the method for each container fluid injection, can boost productivity.
Claims (2)
1. the manufacture method of an enclosed-type battery, it is the manufacture method of loading lid and sealing by welding by opening at battery case, it is characterized in that, hold after the cell device in the battery case, load lid at the battery case opening, the state at the part formation position, gap of the binding site of lid and battery case opening is after sealing by welding, inject electrolyte from the position, gap, by welding the position, gap is sealed then.
2. the manufacture method of enclosed-type battery according to claim 1, it is characterized in that, at the indoor fluid injection groove that is provided with of fluid injection, make the clearance portion position in the bottom, the electrolyte for the treatment of fluid injection injects the fluid injection groove, the pressure that fluid injection is indoor reduces pressure once at least below atmospheric pressure, remains on the above pressure of atmospheric pressure or atmospheric pressure, carries out the fluid injection of electrolyte.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000291881A JP3615699B2 (en) | 2000-09-26 | 2000-09-26 | Sealed battery and method for manufacturing the same |
| JP291881/00 | 2000-09-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1350337A CN1350337A (en) | 2002-05-22 |
| CN1310346C true CN1310346C (en) | 2007-04-11 |
Family
ID=18774902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011384395A Expired - Lifetime CN1310346C (en) | 2000-09-26 | 2001-09-26 | Closed cell and method for manufacturing the same |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3615699B2 (en) |
| KR (1) | KR100795651B1 (en) |
| CN (1) | CN1310346C (en) |
| TW (1) | TW518777B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4617784B2 (en) * | 2004-09-07 | 2011-01-26 | 株式会社明電舎 | Electrolyte injection method and apparatus for electric double layer capacitor |
| JP2007313544A (en) * | 2006-05-26 | 2007-12-06 | Pioneer Electronic Corp | Beam welding equipment and beam welding method |
| CN103329312B (en) * | 2011-01-31 | 2016-06-22 | 株式会社杰士汤浅国际 | Charge storage element |
| JP5670854B2 (en) * | 2011-09-29 | 2015-02-18 | 株式会社東芝 | Manufacturing method of secondary battery |
| JP5935526B2 (en) * | 2012-06-12 | 2016-06-15 | 株式会社村田製作所 | Electrolyte injection method |
| JP5790604B2 (en) * | 2012-08-07 | 2015-10-07 | トヨタ自動車株式会社 | Manufacturing method of sealed battery |
| US9147865B2 (en) | 2012-09-06 | 2015-09-29 | Johnson Controls Technology Llc | System and method for closing a battery fill hole |
| JP7373935B2 (en) * | 2018-07-30 | 2023-11-06 | マクセル株式会社 | Battery case lid and battery |
| CN115050587A (en) * | 2022-05-09 | 2022-09-13 | 安徽德渥新能源科技有限公司 | Capacitor assembly process with injection molding insulation part |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85103500A (en) * | 1985-05-03 | 1986-10-29 | 三洋电机株式会社 | Metal-hydrogen alkaline accumulator |
| JPH0641050U (en) * | 1992-10-30 | 1994-05-31 | 三洋電機株式会社 | Sealed prismatic battery |
| CN1181638A (en) * | 1996-10-31 | 1998-05-13 | 松下电器产业株式会社 | Cylindrical alkaline battery |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4209343A1 (en) * | 1992-03-23 | 1993-09-30 | Hoechst Ag | 1,2-naphthoquinone-2-diazide-sulfonic acid ester, radiation-sensitive composition prepared therefrom and radiation-sensitive recording material |
| JPH0737611A (en) * | 1993-07-16 | 1995-02-07 | Sanyo Electric Co Ltd | Laser sealing method for sealed battery |
| KR960025568U (en) * | 1994-12-07 | 1996-07-22 | Sealed Ni-MH Battery | |
| JP3890675B2 (en) * | 1996-06-12 | 2007-03-07 | Ｆｄｋ株式会社 | Square electrochemical device and method for producing the same |
| JP2000048803A (en) * | 1998-07-27 | 2000-02-18 | Japan Storage Battery Co Ltd | Organic electrolyte battery |
-
2000
- 2000-09-26 JP JP2000291881A patent/JP3615699B2/en not_active Expired - Lifetime
-
2001
- 2001-09-25 TW TW090123573A patent/TW518777B/en not_active IP Right Cessation
- 2001-09-26 KR KR1020010059685A patent/KR100795651B1/en active IP Right Grant
- 2001-09-26 CN CNB011384395A patent/CN1310346C/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85103500A (en) * | 1985-05-03 | 1986-10-29 | 三洋电机株式会社 | Metal-hydrogen alkaline accumulator |
| JPH0641050U (en) * | 1992-10-30 | 1994-05-31 | 三洋電機株式会社 | Sealed prismatic battery |
| CN1181638A (en) * | 1996-10-31 | 1998-05-13 | 松下电器产业株式会社 | Cylindrical alkaline battery |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002100329A (en) | 2002-04-05 |
| KR20020024806A (en) | 2002-04-01 |
| TW518777B (en) | 2003-01-21 |
| CN1350337A (en) | 2002-05-22 |
| KR100795651B1 (en) | 2008-01-21 |
| JP3615699B2 (en) | 2005-02-02 |
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