CN103022407A - Device for discharging bubbles in electrolyte of lithium ion battery - Google Patents
Device for discharging bubbles in electrolyte of lithium ion battery Download PDFInfo
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- CN103022407A CN103022407A CN2012105647663A CN201210564766A CN103022407A CN 103022407 A CN103022407 A CN 103022407A CN 2012105647663 A CN2012105647663 A CN 2012105647663A CN 201210564766 A CN201210564766 A CN 201210564766A CN 103022407 A CN103022407 A CN 103022407A
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- electrolyte
- surge tank
- nitrogen
- ion battery
- lithium ion
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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
Abstract
The invention discloses a device for discharging bubbles in electrolyte of a lithium ion battery. The device comprises an electrolyte cylinder (1) and a buffer cylinder (4), which are mutually communicated via a connecting pipe (3); a vacuumizing pipe (3) is inserted into the right at the top of the buffer cylinder (4), and the vacuumizing pipe (3) is communicated with one set of vacuumizing device; and at least one output pipe (10) is inserted into the left at the top of the buffer cylinder (4) and communicated with an electrolyte pump. The device can conveniently and reliably discharge bubbles in the electrolyte before the electrolyte is injected into the battery, so that the capacity accuracy of the electrolyte is improved, the cycle performance of the lithium ion battery is ensured, the production quality of the battery can be remarkably improved, users' use experience is enhanced, and improvement of the lithium ion battery on market competitiveness is facilitated.
Description
Technical field
The present invention relates to the battery technology field, particularly relate to a kind of lithium ion battery liquid injection exhaust bulb apparatus.
Background technology
At present, lithium ion battery have specific energy high, recycle often, the advantage such as memory time is long, not only on portable electric appts, be used widely such as mobile phone, Digital Video and laptop computer, and be widely used in the big-and-middle-sized electrical equipment aspects such as electric automobile, electric bicycle and electric tool.
For present polymer Li-ion battery, it is as a kind of novel lithium ion battery, not only have the advantages such as voltage is high, specific energy is high, good cycle, and compare traditional lithium-ion battery with steel shell and improved more greatly its security performance, so polymer Li-ion battery has been widely used in the various digital products such as notebook, mobile phone, digital camera, bluetooth earphone, portable media player.
Extensive use along with polymer Li-ion battery, receive much concern the useful life of battery, the cycle performance of battery substantially can characterizing battery useful life, and the cycle performance of battery depend mainly on battery electrolyte reservoir quantity what, therefore, the reservoir quantity precision that how to guarantee battery electrolyte is the subject matter that the fluid injection process faces.At present, for the control of battery electrolyte reservoir quantity precision, mainly be subjected to the impact of following two factors, the one, the process capability of topping-up pump, present applied height above sea level pump or electrodynamic pump, the precision of its reservoir quantity all can satisfy the specification requirement of fluid injection operation; The 2nd, whether the electrolyte that injects in the battery leaves bubble, if there is bubble residual, will cause so the reservoir quantity of battery electrolyte inside unstable.
Summary of the invention
In view of this, the purpose of this invention is to provide a kind of lithium ion battery liquid injection exhaust bulb apparatus, it can make things convenient for, reliably the bubble in the electrolyte be discharged before injecting battery, thereby improve the reservoir quantity precision of battery electrolyte inside, guarantee the cycle performance of lithium ion battery, therefore can significantly improve the quality of production of battery, the product that strengthens the user uses impression, be conducive to improve the market competitiveness of lithium ion battery, be of great practical significance.
For this reason, the invention provides a kind of lithium ion battery liquid injection exhaust bulb apparatus, comprise electrolyte bucket and surge tank, described electrolyte bucket and surge tank are connected by a connecting tube each other;
The right, top of described surge tank is inserted with vacuum lead, and described vacuum lead is connected with a vacuum extractor;
The top left of described surge tank is inserted with at least one output channel, and described output channel is connected with a topping-up pump.
Wherein, the top of described electrolyte bucket is inserted with the first nitrogen and passes into pipeline, and described the first nitrogen passes into pipeline and is connected with a nitrogen machine.
Wherein, the right, the top of described surge tank is inserted with the second nitrogen and passes into pipeline, and described the second nitrogen passes into pipeline and is connected with a nitrogen machine.
Wherein, the top left of described surge tank is inserted with four described output channels, and each described output channel is connected with a topping-up pump.
Wherein, be provided with an electromagnetically operated valve on the described connecting tube, the right side wall of described surge tank is respectively arranged with a liquid level upper limit inductor and a liquid level lower limit inductor in two ends up and down, and described liquid level upper limit inductor is connected with electromagnetically operated valve respectively with a liquid level lower limit inductor.
Wherein, described vacuum extractor moves time-delay closing when receiving shutdown signal.
By above technical scheme provided by the invention as seen, compared with prior art, the invention provides a kind of lithium ion battery liquid injection exhaust bulb apparatus, it can make things convenient for, reliably the bubble in the electrolyte be discharged before injecting battery, thereby improve the reservoir quantity precision of battery electrolyte inside, guarantee the cycle performance of lithium ion battery, therefore can significantly improve the quality of production of battery, the product that strengthens the user uses impression, be conducive to improve the market competitiveness of lithium ion battery, be of great practical significance.
Description of drawings
Fig. 1 is the structural representation of a kind of lithium ion battery liquid injection exhaust bulb apparatus provided by the invention;
Among the figure: 1 is the electrolyte bucket, and 2 is that the first nitrogen passes into pipeline, and 3 is connecting tube, and 4 is surge tank, and 5 is electromagnetically operated valve, and 6 is liquid level upper limit inductor, and 7 is liquid level lower limit inductor, and 8 is that the second nitrogen passes into pipeline, and 9 is vacuum lead, and 10 is output channel.
Embodiment
In order to make those skilled in the art person understand better the present invention program, the present invention is described in further detail below in conjunction with drawings and embodiments.
Referring to Fig. 1, the invention provides a kind of lithium ion battery liquid injection exhaust bulb apparatus, comprise electrolyte bucket 1 and surge tank 4, described electrolyte bucket 1 and surge tank 4 are connected by a connecting tube 3 each other.
In the present invention, deposited electrolyte in described electrolyte bucket 1 and the surge tank 4.
In the present invention, the top of described electrolyte bucket 1 is inserted with the first nitrogen and passes into pipeline 2, described the first nitrogen passes into pipeline 2 and is connected with a nitrogen machine, thereby by opening nitrogen machine, described the first nitrogen pass into pipeline 2 can be all the time in the described electrolyte bucket 1 nitrogen injection, and to keep the pressure of institute's nitrogen injection be 0.3 MPa.
In the present invention, the right, top of described surge tank 4 is inserted with the second nitrogen and passes into pipeline 8, described the second nitrogen passes into pipeline 8 and is connected with a nitrogen machine, thereby by opening nitrogen machine, described the second nitrogen pass into pipeline 8 can be all the time in the described surge tank 4 nitrogen injection, and the maintenance slight positive pressure state for example allows the pressure of institute's nitrogen injection be 0.01 MPa.
In the present invention, the right, top of described surge tank 4 is inserted with vacuum lead 9, described vacuum lead 9 is connected with a vacuum extractor (for example evacuator), thereby by opening vacuum extractor, the bubble of electrolyte in the surge tank 4 can be extracted out through described vacuum lead 9.
In the present invention, on the specific implementation, described vacuum extractor is when receiving shutdown signal, and will delay time (such as 30 seconds) close operation.
In the present invention, the top left of described surge tank 4 is inserted with four output channels 10, and each described output channel 10 is connected with a topping-up pump, and described topping-up pump is used for to the inner electrolyte that injects of lithium-ion battery shell.
Need to prove, for the present invention, electrolyte relies on nitrogen pressure, injects surge tank 4 from electrolyte bucket 1, the height of the topping-up pump that four output channels 10 are communicated with will be lower than the height of surge tank, and topping-up pump will be lower than the height of topping-up pump to the height of the fluid injection syringe needle of lithium ion battery.
In the present invention, be provided with an electromagnetically operated valve 5 on the described connecting tube 3, the right side wall of described surge tank 4 is respectively arranged with a liquid level upper limit inductor 6 and a liquid level lower limit inductor 7 in two ends up and down, and described liquid level upper limit inductor 6 is connected with electromagnetically operated valve 5 respectively with a liquid level lower limit inductor 7.Therefore, for the present invention, by liquid level upper limit inductor 6 is installed, when electrolyte bucket 1 to surge tank 4 conveying electrolytes, so that the injection rate of surge tank 4 electrolyte insides is when being higher than in the surge tank 4 the liquid level of electrolyte higher limit, described liquid level upper limit inductor 6 will send alarm signal to electromagnetically operated valve 5, and will trigger shut electromagnetic valve 5 this moment; And by liquid level lower limit inductor 7 is installed, when for to lithium ion battery liquid injection, surge tank 4 is exported electrolyte by four output channels 10 to topping-up pump, thereby so that when liquid level of electrolyte is lower than lower limit in the surge tank 4, the liquid level lower limit inductor 7 of surge tank 4 will send alarm signal to topping-up pump, at this moment, the topping-up pump lithium ion battery that will stop to the outside carrying out fluid injection.
Need to prove, for the present invention, liquid level of electrolyte not yet is lower than in limited time lower in surge tank 4, topping-up pump normally moves the fluid injection of outside lithium ion battery, at this moment, electromagnetically operated valve 5 is in closed condition, and electrolyte bucket 1 and surge tank 4 are obstructed, nitrogen passes into pipeline 8 one direct-opens, be in slight positive pressure state (such as 0.01MPa), vacuum extractor 9 does not leave, and electrolyte is from 10 outputs of four output channels, flow to topping-up pump, inject lithium ion battery by topping-up pump.
And the liquid level of electrolyte in surge tank 4 is lower than lower limit, surge tank liquid level lower limit inductor 7 is reported to the police to topping-up pump, at this moment, topping-up pump will stop lithium ion battery being carried out fluid injection, four output channels 10 the topping-up pump that connects respectively will no longer include electrolyte output, electromagnetically operated valve 5 between electrolyte bucket 1 and the surge tank 4 is opened, the vacuum extractor that vacuum lead 9 is communicated with begins to vacuumize, because the first nitrogen passes into pipeline 2 and has nitrogen to be communicated with (for example pressure is 0.30MPa) with electrolyte bucket 1 always, the electrolyte of electrolyte bucket 1 will inject surge tank 4 through connecting tube 3.
Electrolyte is injected in the surge tank 4, has a large amount of Bubble formations, because the existence of the vacuum extractor that vacuum lead 9 is communicated with, the bubble in the surge tank 4 can rise rapidly from the bottom of surge tank 4 under the effect of negative pressure, extracts out through vacuum lead 9.When being higher than in the surge tank 4, the electrolyte injection rate prescribes a time limit on the liquid level of electrolyte, the liquid level upper limit inductor 6 of surge tank 4 is reported to the police, this moment is with shut electromagnetic valve 5, connecting tube 3 between electrolyte bucket 1 and the surge tank 4 is closed, electrolyte stops to carry in surge tank 4, the vacuum extractor time-delay closing (such as 30s) that vacuum lead 9 is communicated with is fully discharged the bubble in the surge tank 4.
After delay time, the vacuum extractor that vacuum lead 9 is communicated with cuts out, and the topping-up pump that four output channels 10 connect is started working.At this moment, the bubble in the electrolyte in the surge tank 4 is all discharged by negative pressure, in the electrolyte that four topping-up pumps are drawn without bubble, thereby so that this moment battery the reservoir quantity data be accurate and stable, precision is guaranteed, the fluid injection process capability gets a promotion.
Therefore, for the present invention, it has following beneficial effect:
1, electrolyte can be annotated surge tank from the electrolyte bucket after, bubble in the surge tank is discharged, thereby makes in the electrolyte that topping-up pump draws without bubble, has improved the precision of reservoir quantity;
2, can obviously improve the process capability of fluid injection process, thereby improve the yields of fluid injection operation;
3, the stability of the reservoir quantity of battery electrolyte inside be can effectively guarantee, thereby cycle performance and the useful life of battery guaranteed.
In sum, compared with prior art, a kind of lithium ion battery liquid injection exhaust bulb apparatus provided by the invention, it can make things convenient for, reliably the bubble in the electrolyte be discharged before injecting battery, thereby improves the reservoir quantity precision of battery electrolyte inside, guarantees the cycle performance of lithium ion battery, therefore can significantly improve the quality of production of battery, the product that strengthens the user uses impression, is conducive to improve the market competitiveness of lithium ion battery, is of great practical significance.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. a lithium ion battery liquid injection exhaust bulb apparatus is characterized in that, comprises electrolyte bucket (1) and surge tank (4), and described electrolyte bucket (1) and surge tank (4) are connected by a connecting tube (3) each other;
The right, top of described surge tank (4) is inserted with vacuum lead (9), and described vacuum lead (9) is connected with a vacuum extractor;
The top left of described surge tank (4) is inserted with at least one output channel (10), and described output channel (10) is connected with a topping-up pump.
2. fluid injection exhaust bulb apparatus as claimed in claim 1 is characterized in that, the top of described electrolyte bucket (1) is inserted with the first nitrogen and passes into pipeline (2), and described the first nitrogen passes into pipeline (2) and is connected with a nitrogen machine.
3. fluid injection exhaust bulb apparatus as claimed in claim 1 is characterized in that, the right, top of described surge tank (4) is inserted with the second nitrogen and passes into pipeline (8), and described the second nitrogen passes into pipeline (8) and is connected with a nitrogen machine.
4. fluid injection exhaust bulb apparatus as claimed in claim 1 is characterized in that, the top left of described surge tank (4) is inserted with four described output channels (10), and each described output channel (10) is connected with a topping-up pump.
5. fluid injection exhaust bulb apparatus as claimed in claim 1, it is characterized in that, be provided with an electromagnetically operated valve (5) on the described connecting tube (3), the right side wall of described surge tank (4) is respectively arranged with a liquid level upper limit inductor (6) and a liquid level lower limit inductor (7) in two ends up and down, and described liquid level upper limit inductor (6) is connected with electromagnetically operated valve (5) respectively with a liquid level lower limit inductor (7).
6. such as each described fluid injection exhaust bulb apparatus in the claim 1 to 5, it is characterized in that, described vacuum extractor moves time-delay closing when receiving shutdown signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105647663A CN103022407A (en) | 2012-12-24 | 2012-12-24 | Device for discharging bubbles in electrolyte of lithium ion battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105647663A CN103022407A (en) | 2012-12-24 | 2012-12-24 | Device for discharging bubbles in electrolyte of lithium ion battery |
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| CN103022407A true CN103022407A (en) | 2013-04-03 |
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| CN2012105647663A Pending CN103022407A (en) | 2012-12-24 | 2012-12-24 | Device for discharging bubbles in electrolyte of lithium ion battery |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167526A (en) * | 2014-07-25 | 2014-11-26 | 东莞市鸿宝锂电科技有限公司 | Electrolyte vacuum stirring bubble-removal device with self-cleaning function |
| CN106159188A (en) * | 2016-08-31 | 2016-11-23 | 合肥国轩高科动力能源有限公司 | A kind of through electrolyte filling method of lithium ion battery and device |
| CN108400280A (en) * | 2018-05-16 | 2018-08-14 | 江门市朗达锂电池有限公司 | A kind of glove box |
| CN112582763A (en) * | 2019-09-30 | 2021-03-30 | 松下能源(无锡)有限公司 | Automatic electrolyte supply device for vacuum degassing and method for supplying electrolyte by using same |
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2012
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| CN201387907Y (en) * | 2009-03-03 | 2010-01-20 | 天津力神电池股份有限公司 | Automatic liquid feeding device of lithium ion battery filling machine |
| CN201877496U (en) * | 2010-11-01 | 2011-06-22 | 保定风帆新能源有限公司 | Liquid storage device for storing electrolyte of lithium battery |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167526A (en) * | 2014-07-25 | 2014-11-26 | 东莞市鸿宝锂电科技有限公司 | Electrolyte vacuum stirring bubble-removal device with self-cleaning function |
| CN104167526B (en) * | 2014-07-25 | 2016-09-07 | 东莞市鸿宝锂电科技有限公司 | Electrolyte vacuum stirring degassing bulb apparatus with automatic cleaning function |
| CN106159188A (en) * | 2016-08-31 | 2016-11-23 | 合肥国轩高科动力能源有限公司 | A kind of through electrolyte filling method of lithium ion battery and device |
| CN106159188B (en) * | 2016-08-31 | 2018-09-28 | 合肥国轩高科动力能源有限公司 | A kind of through electrolyte filling method of lithium ion battery and device |
| CN108400280A (en) * | 2018-05-16 | 2018-08-14 | 江门市朗达锂电池有限公司 | A kind of glove box |
| CN112582763A (en) * | 2019-09-30 | 2021-03-30 | 松下能源(无锡)有限公司 | Automatic electrolyte supply device for vacuum degassing and method for supplying electrolyte by using same |
| CN112582763B (en) * | 2019-09-30 | 2023-09-15 | 松下能源(无锡)有限公司 | Automatic vacuum degassing electrolyte supply device and method for supplying electrolyte by using same |
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Application publication date: 20130403 |