CN103904287A - Electrolyte injection device, electrolyte injection method and degassing device - Google Patents
Electrolyte injection device, electrolyte injection method and degassing device Download PDFInfo
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- CN103904287A CN103904287A CN201310062145.XA CN201310062145A CN103904287A CN 103904287 A CN103904287 A CN 103904287A CN 201310062145 A CN201310062145 A CN 201310062145A CN 103904287 A CN103904287 A CN 103904287A
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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
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
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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
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Abstract
An electrolyte injection device easily forming a target pressure difference, an electrolyte injection method and a degassing device are disclosed. The electrolyte injection device comprises an electrolyte injection mechanism (1) for injecting electrolyte into an electrolytic bath (Ma) with a pole plate group (P) received therein and a pressure control mechanism (10) for controlling the pressure in the electrolytic bath (Ma). The pressure control mechanism comprises a receiving portion (12) for receiving the electrolytic bath injected with electrolyte, a pressurizing portion (16-19,30) for increasing the pressure in the receiving portion to a referential pressure (Pb) higher than standard pressure (Pa), and a pressure reduction portion (13-14, 30) for reducing the pressure in the receiving portion pressurized by the pressurizing portion to a pressure (Pp) lower than the standard pressure (Pa) so as to generate a preset pressure difference(Delta Pbp) relative to the standard pressure in the receiving portion.
Description
Technical field
The electric groove the present invention relates to being accommodated with pole plate group and electrolyte carries out degassed electrolyte injection device, electrolyte method for implanting and degasser.
Background technology
In the electric groove possessing at battery, be accommodated with pole plate group and electrolyte, pole plate group is made up of dividing plate, positive plate and negative plate.In the time injecting electrolyte to electric groove, repeatedly carry out fluid injection operation and degassing process, in fluid injection operation, under atmospheric pressure to being accommodated with a part of injecting electrolyte in pole plate group's electric groove, in degassing process, in the electric groove that makes to contain electrolyte, after decompression, again return to atmospheric pressure (for example,, referring to patent documentation 1).In degassing process, in electric groove, reduce pressure by making, thereby can make pole plate group, the abundant impregnation electrolyte of especially whole dividing plate.
Patent documentation 1: TOHKEMY 2003-59485 communique
At this, present inventor finds, in degassing process, in order to make pole plate group, dividing plate impregnation electrolyte especially, just to, by the container decompression that is accommodated with electric groove to predetermined pressure, not make the pressure in the container before decompression and the pressure differential between the pressure of post-decompression container reach predetermined value above also very important.So in the decompression in the electric groove in degassing process, the pressure differential between the pressure in atmospheric pressure when decompression and post-decompression container is set to predetermined value.Now, when the atmospheric pressure in the time of decompression declines along with meteorological variation such as such as typhoon, low pressure etc., amount corresponding to atmospheric slippage when the pressure in post-decompression container also correspondingly reduces with decompression.On the other hand, at the vacuum pump of the decompression in container, exhaust capacity is limited, so in the time that atmospheric pressure significantly declines, the pressure differential between the atmospheric pressure when pressure in container and decompression does not reach predetermined value.Its result, the degassing process in electrolyte injection device cannot normally carry out, and pole plate group impregnation electrolyte is insufficient, ionization performance variation.And, in electrolyte injection device, also there is the situation that can not carry out processing below.
Summary of the invention
The object of the invention is to, provide a kind of and can easily form the poor electrolyte injection device of goal pressure, electrolyte method for implanting and degasser.
The electrolyte injection device that a mode of the present invention provides, has: mechanism for filling liquid, inject electrolyte to being accommodated with in pole plate group's electric groove, and described pole plate group has the positive plate and the negative plate that carry out lamination or coiling across dividing plate; And pressure control mechanism, control the pressure in described electric groove, described pressure control mechanism has: incorporating section, storage has been injected into the electric groove of described electrolyte; Pressurization part, by the exert pressure in described incorporating section, to reference pressure, this reference pressure is the pressure higher than standard pressure; And relief portion, will carry out pressure in the incorporating section of the described pressurization pressure forcing down than described Standard Gases that reduces pressure, thereby in described incorporating section, produced the predetermined pressure difference with respect to described reference pressure.
The degasser that another mode of the present invention provides, possess: pressurization part, to be accommodated with exert pressure in the incorporating section of electric groove to reference pressure, this reference pressure is the pressure higher than standard pressure, the inside of described electric groove has pole plate group and electrolyte, and described pole plate group has the positive plate and the negative plate that carry out lamination or coiling across dividing plate; And relief portion, will carry out pressure in the incorporating section of the described pressurization pressure lower than described normal pressure that reduces pressure, thereby in described incorporating section, produced the predetermined pressure difference with respect to described reference pressure.
The electrolyte method for implanting that another mode of the present invention provides, comprises the steps: the step of injecting electrolyte in pole plate group's electric groove to being accommodated with, and described pole plate group has the positive plate and the negative plate that carry out lamination or coiling across dividing plate; With the step of controlling the pressure in described electric groove, wherein, the step of controlling the pressure in described electric groove comprises the steps: to be accommodated with exert pressure in the incorporating section of the electric groove that the has been injected into described electrolyte step to reference pressure, and this reference pressure is the pressure higher than standard pressure; And after described pressurization, by the pressure forcing down than described Standard Gases that reduces pressure of the pressure in described incorporating section, thereby in described incorporating section, produce the step with respect to the predetermined pressure difference of described reference pressure.
Brief description of the drawings
Fig. 1 is the formation of the mechanism for filling liquid that represents that the electrolyte injection device of an execution mode possesses and the figure as the electric groove of fluid injection object.
Fig. 2 has the formation of the pressure control mechanism that the electrolyte injection device of the mechanism for filling liquid of Fig. 1 possesses and the figure as the electric groove of degassed object.
Fig. 3 is the figure of the formation of the pressure detecting portion that possesses of the pressure control mechanism of presentation graphs 2.
Fig. 4 (a)～Fig. 4 (d) is the sequential chart of driving condition in the pressure control processing that represents to be undertaken by the pressure control mechanism of Fig. 2, each valve.
Fig. 5 is the sequential chart that represents that the pressure control undertaken by the pressure control mechanism of Fig. 2 pressure in processing, in incorporating section is passed.
Fig. 6 (a) and Fig. 6 (b) are respectively the figure that passes the effect of the pressure control mechanism of presentation graphs 2 by the pressure in incorporating section.
Fig. 7 is the flow chart that adopts the treatment step of the electrolyte method for implanting that the pressure control mechanism of Fig. 2 carries out.
Fig. 8 is the flow chart that adopts the treatment step of the compress control method that the pressure control mechanism of Fig. 2 carries out.
description of reference numerals
1 ... mechanism for filling liquid, 2 ... fluid injection nozzle, 3 ... mounting portion, 10 ... pressure control mechanism, 11 ... mounting plate, 12 ... lid, 13 ... vacuum pump, 13 ... vacuum valve, 15 ... atmosphere pressure valve, 16 ... air supply portion, 17 ... pressure regulating part, 18 ... pressurized tank, 19 ... pressurizing valve, 20 ... pressure detecting portion, 20a ... introducing port, 20b ... test section, 20c ... cable, 20d ... pilot portion, 20e ... holding wire, 21 ... pressure gauge valve, 30 ... control part, E ... electrolyte, M ... electricity groove group, Ma ... electricity groove, P ... pole plate group.
Embodiment
One execution mode of electrolyte injection device, electrolyte method for implanting and degasser is described referring to figs. 1 through Fig. 8.In the present embodiment, degasser is embodied in pressure control mechanism.The order the following describes is followed successively by action, the effect of pressure control mechanism, the electrolyte method for implanting of each valve that the pressure control mechanism of formation, the electrolyte injection device of electrolyte injection device possesses.
[formation of electrolyte injection device]
The formation of electrolyte injection device is described referring to figs. 1 through Fig. 3.The order the following describes is followed successively by mechanism for filling liquid and the pressure control mechanism that electrolyte injection device possesses.
[mechanism for filling liquid]
As shown in Figure 1, mechanism for filling liquid 1 possesses multiple fluid injection nozzles 2 of the electrolyte E that spues.Multiple fluid injection nozzles 2 under atmospheric pressure inject electrolyte E to the mutually different electric groove Ma in the electric groove group M in mounting portion 3 respectively.
On electric groove group M, arrange and be formed with multiple electric groove Ma.Each electric groove Ma is formed as rectangular-shaped, and multiple electric groove Ma share the sidewall extending along electric groove Ma orientation.In each electric groove Ma, be accommodated with pole plate group P, this pole plate group P carries out lamination by positive plate and negative plate across dividing plate and forms, and multiple pole plate group P are connected in series.
[pressure control mechanism]
As shown in Figure 2, pressure control mechanism 10 has and is for example formed as tabular mounting plate 11, at the upper surface of mounting plate 11, mounting surface is uploaded to be set up and stated electric groove group M.In the each electric groove Ma of electric groove group M, be accommodated with pole plate group and electrolyte.Mounting plate 11 tegmentums 12 cover, and this lid 12 is formed as the case shape of lower surface opening, in the periphery of the lower surface of lid 12, seal member are installed.
On lid 12, be linked with the switching mechanism 12a being driven by actuators such as such as cylinders.Switching mechanism 12a changes with respect to the mounting surface of mounting plate 11 position of covering 12 along above-below direction.When the electric groove group M that is injected with electrolyte is below lid 12 during by conveyance, switching mechanism 12a makes to cover 12 and leaves from the mounting surface of mounting plate 11.With respect to this, while being carried out pressure control processing to being placed on the electric groove group M loading on plate 11, switching mechanism 12a is placed into lid 12 on mounting plate 11, by covering 12, electric groove group M is covered.Thus, form the accommodation space of sealing by mounting plate 11 and lid 12, in accommodation space, receive electric groove group M.In the present embodiment, form incorporating section by mounting plate 11 and lid 12.
On lid 12, be connected with vacuum pump 13, vacuum pump 13 reduces pressure to accommodation space, thereby is reduced pressure in the inside of the each electric groove Ma that forms electric groove group M.Vacuum pump 13 can be by the pressure setting in accommodation space in the scope of predetermined pressure, and the lower limit in pressure limit is critical pressure.Critical pressure is for example several kPa.By lid 12 pipe arrangements that are connected with vacuum pump 13 vacuum valve 14 is installed midway, this vacuum valve 14 will cover 12 and vacuum pump 13 between be communicated with and cut off.In the time that vacuum valve 14 is opened, the pressure of accommodation space reduces pressure towards critical pressure.
Be connected with the pipe arrangement being communicated with atmosphere at lid on 12, at this pipe arrangement atmosphere pressure valve 15 be installed midway.In the time that atmosphere pressure valve 15 is opened, accommodation space becomes atmospheric pressure.
Be connected with on 12 to the interior air fed air supply of lid 12 portion 16 at lid, on the pipe arrangements that air supply portion 16 and lid 12 are linked, pressure regulating part 17 and pressurized tank 18 be installed from air supply portion 16 sides successively.Between pressurized tank 18 and lid 12, link by 2 pipe arrangements, i.e. the 1st pipe arrangement and the 2nd pipe arrangement, 2 pipe arrangements and pressurized tank 18 are connected in parallel.
The 1st pipe arrangement linking between by pressurized tank 18 and lid 12 pressurizing valve 19 is installed midway, this pressurizing valve 19 will pressurized tank 18 with cover 12 between be communicated with and cut off.And, by pressurized tank 18 and lid 12 between link the 2nd pipe arrangement midway, pressure detecting portion 20 and pressure gauge valve 21 are installed successively from covering 12 sides, this pressure gauge valve 21 will be communicated with and cut off between pressure detecting portion 20 and pressurized tank 18.
The air conditioning of supplying with from air supply portion 16 is become reference pressure by pressure regulating part 17.Reference pressure is the pressure higher than standard pressure, for example, be set to high several kPa than standard pressure 101.325kPa.In the time that the pressure differential between pressure and the reference pressure of accommodation space arrives predetermined pressure difference, set reference pressure with the scope that the critical pressure of the pressure ratio vacuum pump 13 in accommodation space is large.
In pressurized tank 18, be detained the air that is pressurized to reference pressure by pressure regulating part 17.In the time that pressurizing valve 19 is opened, the air in pressurized tank 18 is fed into accommodation space, is pressurized to reference pressure in accommodation space.In the time that pressure gauge valve 21 is opened, the air of reference pressure is fed into pressure detecting portion 20.
As shown in Figure 3, pressure detecting portion 20 possesses: test section 20a; Introducing port 20b, is imported into the pressure in accommodation space; And cable 20c, from test section 20a towards extending in contrary with an introducing port 20b side with respect to test section 20a.In cable 20c, be installed with the 20d of pilot portion that is formed as tubulose, supply with the pressurized air as pressure fluid from pressurized tank 18 guide splenium 20d, until the pressure in the 20d of pilot portion reaches reference pressure.And, in cable 20c, be installed with holding wire 20e, the testing result of the holding wire 20e output detections 20a of portion.
The pressure detecting portion 20 of present embodiment has been utilized the pressure gauge that can detect gauge pressure, and gauge pressure is the pressure taking atmospheric pressure as benchmark.In pressure detecting portion 20, by originally supplying with to the 20d of pilot portion of atmosphere opening the air having pressurizeed, thereby pressure detecting portion 20 detects the pressure differential between pressure and the reference pressure of accommodation space.
As shown in Figure 2, control part 30 is according to the driving of controlling switching mechanism 12a for the program (sequence) of carrying out pressure control processing.Control part 30 is with respect to the pressure differential between pressure and the reference pressure of accommodation space, using predetermined pressure difference as the poor storage of goal pressure.The poor be for example set to-90kPa of goal pressure.Control part 30 is according to poor for program and the goal pressure of carrying out pressure control processing, with reference to the testing result of the pressure detecting portion 20 of inputting by holding wire 20e, the driving of vacuum valve 14, atmosphere pressure valve 15, pressurizing valve 19 and pressure gauge valve 21 is controlled.
For example, control part 30 is exported for opening the control signal of pressurizing valve 19 after having formed accommodation space, and accommodation space is pressurized to reference pressure.And control part 30 is after being pressurized to reference pressure by accommodation space, output is used for opening the control signal of vacuum valve 14, thereby accommodation space is reduced pressure.And, control part 30, according to the testing result of pressure detecting portion 20, judges whether in accommodation space, to have formed goal pressure poor, when having formed goal pressure when poor in accommodation space, the control signal of output for vacuum valve 14 cuts out, thereby the formation of target end pressure differential.
In the present embodiment, form relief portion by vacuum pump 13, vacuum valve 14 and control part 30.And, in the present embodiment, form pressurization part and the 1st pressurization part by air supply portion 16, pressure regulating part 17, pressurized tank 18, pressurizing valve 19 and control part 30.And, in the present embodiment, form the 2nd pressurization part by the 1st pressurization part and atmosphere pressure valve 15.
[action of each valve when pressure control is processed]
Illustrate that with reference to Fig. 4 and Fig. 5 pressure control mechanism 10 is to carrying out the passing along with the action of each valve of pressure in action and the lid 12 of each valve of degassed pressure control in processing in electric groove Ma.Pressure control processing refers to a series of processing that comprise the processing that accommodation space is reduced pressure and the processing of after reduced pressure treatment, accommodation space being pressurizeed.And, in Fig. 4 and Fig. 5, give identical symbol to same timing.
In pressure control is processed, first, the electric groove group M that is injected with electrolyte in each electric groove Ma by conveyance to cover 12 below.In the time that electric groove group M is configured in the below of covering 12, switching mechanism 12a is driven, and the mounting surface tegmentum 12 of mounting plate 11 covers.Thus, the electric groove group M on mounting plate 11 is incorporated in the accommodation space being surrounded by mounting plate 11 and lid 12.
As shown in Figure 4, in the time that electric groove group M tegmentum 12 covers (timing T0), vacuum valve 14 and atmosphere pressure valve 15 are closed, and accommodation space is retained atmospheric pressure.Pressure gauge valve 21 stays open during pressure control processing carrying out, all the time to the air of pressure gauge valve 21 sustainable supply reference pressures.
In the time that electric groove group M tegmentum 12 covers, pressurizing valve 19 is opened the scheduled time (timing T1), and the air of the reference pressure being regulated by pressure regulating part 17 is fed into accommodation space by pressurized tank 18.Thus, the electric groove group M being accommodated in accommodation space is arrived the reference pressure higher than standard pressure by Quick-pressing.
In the time that accommodation space is elevated to reference pressure, pressurizing valve 19 is closed (timing T2), and then, vacuum valve 14 is opened (timing T3).Now, vacuum valve 14 open until the pressure differential between pressure and the reference pressure of accommodation space to reach goal pressure poor.When the pressure differential between pressure and the reference pressure of accommodation space reaches goal pressure when poor, vacuum valve 14 cuts out (timing T4).Thus, the air in electrolyte or the air that is attached on pole plate group are released to accommodation space in electric groove Ma as bubble.
In the time that vacuum valve 14 cuts out, atmosphere pressure valve 15 is opened the scheduled time (timing T5), and then, atmosphere pressure valve 15 is closed (timing T6).Thus, the pressure of accommodation space is elevated near atmospheric pressure.In the time that atmosphere pressure valve 15 is closed, pressurizing valve 19 is opened (timing T7), and the air of the reference pressure higher than standard pressure is supplied to accommodation space by pressurized tank 18, and accommodation space is elevated to reference pressure.The pressurizing valve 19 of opening at timing T7 is as long as kept reference pressure to close before next pressure control operation starts after reaching the scheduled time from accommodation space.
In the time that accommodation space arrives reference pressure, switching mechanism 12a is driven, and accommodation space is to atmosphere opening.Now, because the pressure ratio atmospheric pressure of accommodation space is high, so even lid 12 and mounting plate 11 undertaken by seal member closely sealed after, lid 12 still easily from mounting plate 11 leave, accommodation space is easily to atmosphere opening.
As shown in Figure 5, accommodation space is retained atmospheric pressure from timing T0 to timing T1, then, from timing T1, pressurizes towards the reference pressure higher than standard pressure.Then, accommodation space is held in reference pressure from timing T1 to timing T3, then, from timing T3, towards and reference pressure between the arrival pressure of reach-90kPa of pressure differential reduce pressure, keep to T5 regularly the state being depressurized.Then, accommodation space pressurizes towards atmospheric pressure from timing T5, till after regularly T7 keeps atmospheric pressure, be pressurized to the reference pressure higher than standard pressure.
[effect of pressure control mechanism]
The effect of pressure control mechanism is described with reference to Fig. 6.In Fig. 6, represent that with solid line the pressure of the accommodation space in above-mentioned execution mode changes, on the other hand, rule to represent that with single-point the pressure of the accommodation space in existing structure changes.And, the pressure of accommodation space when atmospheric pressure, real atmospheric pressure and standard pressure when Fig. 6 (a) represents that pressure control is processed are roughly equal changes, the pressure variation of accommodation space when atmospheric pressure when Fig. 6 (b) represents that pressure control is processed forces down than Standard Gases.
As shown in Figure 6, no matter that real atmospheric pressure Pa and standard pressure are when roughly equal, or when real atmospheric pressure Pa is the air pressure that forces down than Standard Gases, for example 98kPa left and right, the accommodation space before the decompression in present embodiment is all pressurized to the reference pressure Pb higher than standard pressure.Thus, even if real atmospheric pressure Pa is low pressure, the pressure of post-decompression accommodation space, to arrive pressure P p still large than the critical pressure Pmin of the action of vacuum pump 13.
Conventionally, be formed on pressure in accommodation space lower, require the reduced pressure capabilities of vacuum pump 13 higher.At this, be set in the existing formation of real atmospheric pressure Pa at the benchmark of the poor Δ Pbp of goal pressure, be force down than Standard Gases hypobaric at the benchmark of the poor Δ Pbp of goal pressure, require the pressure in accommodation space further to decline from critical pressure Pmin, and then require the high performance of the reduced pressure capabilities of vacuum pump 13.And, in existing formation, be in hypobaric situation at the benchmark of the poor Δ Pbp of goal pressure, the reduced pressure capabilities deficiency of vacuum pump 13, so degassed can not the carrying out fully in electric groove Ma.Its result, pole plate group, especially the electrolyte impregnation on dividing plate is insufficient, battery performance variation.
With respect to this, according to the formation of present embodiment, because the benchmark of the poor Δ Pbp of goal pressure is the reference pressure Pb higher than standard pressure, even so in the situation that real atmospheric pressure Pa forces down than Standard Gases, in the time forming the poor Δ Pbp of goal pressure, the difference further declining between standard pressure and real atmospheric pressure without the pressure making in incorporating section.And, be real atmospheric formation with the benchmark of the poor Δ Pbp of goal pressure compared with, easily in incorporating section, form the poor Δ Pbp of goal pressure.In addition, can suppress the electrolyte impregnation deficiency in pole plate group, so can suppress battery performance variation.
[electrolyte method for implanting]
With reference to Fig. 7 and Fig. 8, electrolyte method for implanting is described.
In Fig. 7, the 1st pressure control operation, the 2nd pressure control operation and the 3rd pressure control operation are described, in the present embodiment, the pressure control of Fig. 5 and Fig. 6 is processed and is carried out with the 1st pressure control operation, the 2nd pressure control operation and the 3rd pressure control operation respectively.
As shown in Figure 7, in the time injecting electrolyte in the each electric groove Ma to the electric groove group M of formation, first, in the electric groove Ma that is accommodated with pole plate group, inject a part (the 1st fluid injection operation: step S11) for the electrolyte that should be injected into electric groove Ma.
In the 1st fluid injection operation, under real atmospheric pressure to 70% left and right of injecting whole amounts of for example electrolyte in electric groove Ma.The amount that is supplied to the electrolyte in electric groove Ma in the 1st fluid injection operation is preferably the amount of the liquid level that is injected into the electrolyte in electric groove Ma above being positioned at than pole plate group's upper end.The above-mentioned mechanism for filling liquid 1 that electrolyte can be formed on above-mentioned pressure control mechanism 10 by one to the injection of electric groove Ma carries out, and the mechanism for filling liquid that also can consist of the device as different from pressure control mechanism 10 carries out.
Then, the pressure of accommodation space for example reduces pressure, than poor the 1st the arriving pressure, arrive after pressure than the 1st of the low 50kPa of reference pressure of low the 1st goal pressure of reference pressure, and the pressure of accommodation space returns to reference pressure (the 1st pressure control operation: step S12) again.
Then, under real atmospheric pressure, by mechanism for filling liquid to 30% left and right (the 2nd fluid injection operation: step S13) of injecting whole amounts of remaining electrolyte, for example electrolyte in each electric groove Ma.
Then, the pressure of accommodation space for example reduces pressure, than poor the 2nd the arriving pressure, arrive after pressure than the 2nd of the low 80kPa of reference pressure of low the 2nd goal pressure of reference pressure, and the pressure of accommodation space returns to reference pressure (the 2nd pressure control operation: step S14) again.
Then, the pressure of accommodation space for example reduces pressure, than poor the 3rd the arriving pressure, arrive after pressure than the 3rd of the low 90kPa of reference pressure of low the 3rd goal pressure of reference pressure, and the pressure of accommodation space returns to reference pressure (the 3rd pressure control operation: step S15) again.
In the 1st pressure control operation, carry out pressure control processing by possessing for first pressure control mechanism of the vacuum pump of the 1st pressure control operation, in the 2nd pressure control operation, carry out pressure control processing by possessing for second pressure control mechanism of the vacuum pump of the 2nd pressure control operation.
Or, in the 1st pressure control operation and the 2nd pressure control operation, on above-mentioned pressure control mechanism 10, add for the vacuum pump of the 1st pressure control operation with for the vacuum pump of the 2nd pressure control operation, in each pressure control operation, use corresponding vacuum pump to carry out pressure control processing.
Or, in the 1st pressure control operation, carry out the decompression for the short evacuation time of the 1st pressure control operation by above-mentioned pressure control mechanism 10, in the 2nd pressure control operation, carry out the decompression for the long evacuation time of the 2nd pressure control operation by above-mentioned pressure control mechanism 10.
In electrolyte method for implanting, carry out multiple pressure control operations, and in multiple pressure control operations, along with number of times increases, the poor absolute value of goal pressure is set greatlyr.Thus, compared with the method for the 3rd pressure control operation of the absolute value maximum poor with only carrying out goal pressure, in the 1st pressure control operation and the 2nd pressure control operation, emit the air in many electric groove Ma, in the 3rd pressure control operation, easily form goal pressure poor.
In the case of for example only carrying out the 3rd pressure control operation of object as a comparison, even if it is poor to have formed goal pressure in incorporating section temporarily, sometimes also can raise because the air of emitting in electric groove Ma cause the pressure in incorporating section.Thus, vacuum pump 13 must carry out the decompression in incorporating section, and the load that vacuum pump 13 is applied increases.
With respect to this, according to present embodiment, easily in incorporating section, form predetermined pressure, can reduce to be applied to the load on vacuum pump 13.
[pressure control operation]
The compress control method adopting in each pressure control operation is described with reference to Fig. 8.In the 1st pressure control operation to the 3 pressure control operations, although the goal pressure forming in accommodation space is poor different, but the treatment step relevant with the decompression of accommodation space is identical.And, the following describes and use above-mentioned pressure control mechanism 10 to carry out the pressure controlled situation in electric groove Ma.
As shown in Figure 8, in each pressure control operation, after accommodation space is pressurized (the 1st pressurization operation: step S21), accommodation space is depressurized (decompression operation: step S22).Then, the pressure of accommodation space returns to atmospheric pressure (atmosphere opening operation: step S23), further accommodation space pressurized (the 2nd pressurization operation: step S24).
Wherein, in the 1st pressurization operation, the air of reference pressure is fed into and is held in real atmospheric accommodation space from pressurized tank 18, thereby the pressure of accommodation space is elevated to reference pressure.And in the 1st decompression operation, vacuum pump 13 reduces pressure to accommodation space, the pressure of accommodation space is depressurized to the arrival pressure with respect to the pressure differential of reference pressure formation-90kPa.Then, in the open operation of atmospheric pressure, real atmospheric air is fed into the accommodation space in decompression state, thereby the pressure of accommodation space becomes atmospheric pressure.And in the 2nd pressurization operation, identical with the 1st pressurization operation, the air of reference pressure is supplied to accommodation space from pressurized tank 18, thereby the pressure of accommodation space is elevated to reference pressure.
As mentioned above, in electrolyte method for implanting, carry out multiple pressure control operations, and in multiple pressure control operations, along with number of times increases, the poor absolute value of goal pressure is set greatlyr.That is, in last pressure control operation, in the 3rd pressure control operation, formed in the poor situation of goal pressure taking real atmospheric pressure as benchmark, post-decompression arrival pressure becomes the possibility maximum lower than critical pressure.And, for the 1st pressurization operation that the pressure of the accommodation space before decompression is elevated to reference pressure, more effective than other pressure control operations in the 3rd pressure control operation.
As mentioned above, according to an execution mode of electrolyte injection device, electrolyte method for implanting and degasser, can obtain cited effect below.
(1) pressure of the accommodation space before decompression is pressurized to reference pressure, so it is poor easily to produce goal pressure between the pressure of accommodation space before decompression and the pressure of post-decompression accommodation space.Thus, even if atmospheric pressure when pressure control is processed declines to a great extent because meteorology changes, still easily in accommodation space, form goal pressure poor.And then, be difficult to hinder the decompression in the each electric groove Ma that tegmentum 12 covers.And, compared with above-mentioned existing formation, can make pole plate group, the abundant impregnation electrolyte of dividing plate especially, can suppress to cause battery performance variation because of pole plate group impregnation insufficient electrolyte.
(2) in pressure detecting portion 20, as the pressure that becomes detection reference, pressurized tank 18 sustainable supply reference pressures.And, compared with the formation different with reference pressure from pressure as a comparative example, that become detection reference, and the formation that the air of reference pressure is also supplied in addition pressure detecting portion 20 except pressurized tank 18 compares, become simple for detection of the formation of the pressure differential between pressure and the reference pressure of accommodation space.
(3) being pressurized to after the pressure higher than standard pressure, open and cover 12.Therefore, be pressurized to and open after atmospheric pressure compared with the formation of covering 12 with pressure as a comparative example, accommodation space, easily open and cover 12.
(4), in electrolyte method for implanting, carry out multiple pressure control operations, and in multiple pressure control operations, along with number of times increases, the poor absolute value of goal pressure is set greatlyr.Thus, compared with only carrying out the method for the 3rd pressure control operation, in the 3rd pressure control operation, easily in incorporating section, produce goal pressure poor.And, can reduce to be applied to the load on vacuum pump 13 in the 3rd pressure control operation.
Above-mentioned execution mode can be implemented to change in the following manner.
In each fluid injection operation, the amount that is supplied to the electrolyte in electric groove Ma is not limited to above-mentioned amount, carries out the size of the number of times of fluid injection operation, electric groove Ma and be incorporated in relation between pole plate group's the size of electric groove Ma etc. suitably changing.
Goal pressure in each pressure control operation is poor, and to be not limited to above-mentioned goal pressure poor, can suitably change according to number of times, the size of electric groove Ma etc. of carrying out pressure control operation.
Electrolyte method for implanting also can not possess 2 fluid injection operations and 3 pressure control operations, and fluid injection operation and pressure control operation are as long as at least respectively possess 1 time.
Also can not apply reference pressure from pressurized tank 18 to pressure detecting portion 20, for example, the pipe arrangement being connected with pressure detecting portion 20 also can be connected with other spaces that form reference pressure.Or, the pipe arrangement being connected with pressure detecting portion 20 is to atmosphere opening, and possess detect atmospheric atmospheric pressure test section, in control part 30, also can the testing result of working pressure test section 20 and the testing result of atmospheric pressure test section, calculate the pressure differential between pressure and the reference pressure of accommodation space.Even if adopt this structure, as long as reference pressure is set to the pressure higher than standard pressure, just can obtain the effect of above-mentioned (1).
In each pressure control operation, in the time accommodation space being reduced pressure, also can the pressure of accommodation space be elevated to reference pressure at every turn.; in at least one operation in the 1st pressure control operation and the 2nd pressure control operation; the pressure of the accommodation space before decompression also can not be lifted to reference pressure, but in accommodation space is at least depressurized the 3rd maximum pressure control operations, the pressure of the accommodation space before decompression is elevated to reference pressure.In this case, at least one operation among the 1st pressure control operation and the 2nd pressure control operation is set to the 2nd decompression operation, in the 2nd decompression operation, be under real atmospheric state at the pressure of accommodation space, by vacuum pump 13, the pressure of accommodation space is reduced pressure.
According to this structure, can obtain following effect.
(5) compared with the formation that is set as reference pressure with the pressure of accommodation space in the time carrying out the decompression of accommodation space at every turn, reduce accordingly the pressure operation in pressure control processing with the part of not pressurizeing by pressurization part, and be difficult to hinder the decompression in accommodation space and even electric groove Ma.
The pressure of the accommodation space before decompression is set as real atmospheric pressure control operation and can uses above-mentioned pressure control mechanism 10 to carry out.In this case, during pressure control operation, above-mentioned pressurizing valve 19 keeps the state of closing.Or described pressure control operation can be carried out to the pressure control mechanism of atmosphere opening with saved air supply portion 16, pressure regulating part 17, pressurized tank 18 and pressurizing valve 19 and pressure detecting portion 20 from pressure control mechanism 10.
The 2nd pressurization part that the accommodation space having reduced pressure is pressurized to again to reference pressure as long as can be by the air supply of reference pressure the formation to accommodation space, can independently form with respect to the 1st pressurization part.
Can be set as the critical pressure of vacuum pump 13 from declined goal pressure poor arrival pressure of reference pressure.According to this structure, can from pressure control mechanism 10, save pressure detecting portion 20, and the testing result of saving working pressure test section 20 from control part 30 judges whether to form the poor arbitration functions of goal pressure.
In electric groove Ma, be not limited to by positive plate and negative plate are carried out to the flat pole plate group that lamination forms across dividing plate, can also receive the pole plate group by positive plate and negative plate are wound into roller shape across dividing plate.And electric groove Ma is not limited to be formed as the rectangular-shaped electric groove for rectangular battery, can be to be also formed as the electric groove for cylinder battery cylindraceous.
The pressure fluid being supplied in incorporating section by pressure regulating part 17 and pressurized tank 18 from air supply portion 16 is not limited to air, as long as to the few gas of the performance impact of battery that electricity consumption groove group M is formed, guarantee the gas of predetermined battery performance.
Claims (6)
1. an electrolyte injection device, has: mechanism for filling liquid, inject electrolyte to being accommodated with in pole plate group's electric groove, and described pole plate group has the positive plate and the negative plate that carry out lamination or coiling across dividing plate; And pressure control mechanism, control the pressure in described electric groove,
Described pressure control mechanism has:
Incorporating section, storage has been injected into the electric groove of described electrolyte;
Pressurization part, by the exert pressure in described incorporating section, to reference pressure, this reference pressure is the pressure higher than standard pressure; And
Relief portion, will carry out pressure in the incorporating section of the described pressurization pressure forcing down than described Standard Gases that reduces pressure, thereby in described incorporating section, produced the predetermined pressure difference with respect to described reference pressure.
2. electrolyte injection device according to claim 1,
Described electrolyte injection device also possesses pressure detecting portion, and this pressure detecting portion has the pilot portion that is imported into pressure fluid,
Described pressurization part is configured to described pressure fluid from described pilot portion to described pressure detecting portion that supply with described reference pressure by,
Described pressure detecting portion is configured to the pressure that detects in described incorporating section and the pressure differential between described reference pressure.
3. electrolyte injection device according to claim 1 and 2,
Described pressurization part is the 1st pressurization part,
Described electrolyte injection device also has the 2nd pressurization part, and the pressure having carried out in the described incorporating section of described decompression is again pressurized to described reference pressure by the 2nd pressurization part.
4. an electrolyte method for implanting, comprises the steps:
To being accommodated with the step of injecting electrolyte in pole plate group's electric groove, described pole plate group has the positive plate and the negative plate that carry out lamination or coiling across dividing plate; With
Control the step of the pressure in described electric groove,
Wherein, the step of controlling the pressure in described electric groove comprises the steps:
To be accommodated with exert pressure in the incorporating section of the electric groove that the has been injected into described electrolyte step to reference pressure, this reference pressure is the pressure higher than standard pressure; And
After described pressurization, by the pressure forcing down than described Standard Gases that reduces pressure of the pressure in described incorporating section, thereby in described incorporating section, produce the step with respect to the predetermined pressure difference of described reference pressure.
5. electrolyte method for implanting according to claim 4,
Before fluid injection and described decompression in generation with respect to the described electrolyte of the described predetermined pressure difference of described reference pressure, also comprise the steps:
Inject the step of electrolyte to described electric groove;
By the pressure forcing down than described Standard Gases that reduces pressure of the pressure in described incorporating section, thereby in described incorporating section, produce the step of the pressure differential less than described predetermined pressure difference.
6. a degasser, possesses:
Pressurization part, to be accommodated with exert pressure in the incorporating section of electric groove to reference pressure, this reference pressure is the pressure higher than standard pressure, and the inside of described electric groove has pole plate group and electrolyte, and described pole plate group has the positive plate and the negative plate that carry out lamination or coiling across dividing plate; With
Relief portion, will carry out pressure in the incorporating section of the described pressurization pressure lower than described normal pressure that reduces pressure, thereby in described incorporating section, produced the predetermined pressure difference with respect to described reference pressure.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012283128A JP2014127344A (en) | 2012-12-26 | 2012-12-26 | Electrolyte injection device, electrolyte injection method and deaerator |
| JP2012-283128 | 2012-12-26 |
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| Publication Number | Publication Date |
|---|---|
| CN103904287A true CN103904287A (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310062145.XA Pending CN103904287A (en) | 2012-12-26 | 2013-02-27 | Electrolyte injection device, electrolyte injection method and degassing device |
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| JP (1) | JP2014127344A (en) |
| CN (1) | CN103904287A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101841803B1 (en) * | 2014-09-17 | 2018-03-23 | 주식회사 엘지화학 | Battery module of improved safety by monitoring of pressure state of battery cell and battery pack containing the same |
| KR102019828B1 (en) * | 2018-01-26 | 2019-09-09 | (주)엔에스 | Method of inpregnating an electrolyte |
| KR102512970B1 (en) * | 2020-03-26 | 2023-03-22 | 주식회사 클레버 | Degas apparatus of battery cell |
| CN114628867A (en) * | 2020-12-14 | 2022-06-14 | 纪顺机电工业股份有限公司 | Electrolyte injection method for lithium battery |
-
2012
- 2012-12-26 JP JP2012283128A patent/JP2014127344A/en active Pending
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- 2013-02-27 CN CN201310062145.XA patent/CN103904287A/en active Pending
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| JP2014127344A (en) | 2014-07-07 |
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Application publication date: 20140702 |