CN201066708Y - A three-electrode device for simulation battery - Google Patents

A three-electrode device for simulation battery Download PDF

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Publication number
CN201066708Y
CN201066708Y CNU200720119760XU CN200720119760U CN201066708Y CN 201066708 Y CN201066708 Y CN 201066708Y CN U200720119760X U CNU200720119760X U CN U200720119760XU CN 200720119760 U CN200720119760 U CN 200720119760U CN 201066708 Y CN201066708 Y CN 201066708Y
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CN
China
Prior art keywords
electrode
cover plate
wire
housing
simulated battery
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CNU200720119760XU
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Chinese (zh)
Inventor
王涌
雷磊
曾诚
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Shanghai BYD Co Ltd
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Shanghai BYD Co Ltd
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Priority to CNU200720119760XU priority Critical patent/CN201066708Y/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The utility model discloses a simulated battery three-electrode device with simple structure. The utility model is provided with an opening shell for holding electric core and electrolyte; the opening of the shell can be detachably provided with a sealed coverplate; the sealed coverplate is respectively embedded with a reference electrode lead wire, a positive lead wire connected with the positive polar ear of the electric core and a negative lead wire connected with the negative polar ear of the electric core; the tail end of the reference electrode lead wire can be provided with lithium metal which forms the reference electrode. A simulated battery three-electrode system can be conveniently manufactured by only arranging the electric core, the lithium metal and the electrolyte in the simulated battery three-electrode device. With good sealing performance, the simulated battery three-electrode device can be repeatedly used.

Description

A kind of simulated battery three electrode assemblies
Technical field
The utility model relates to a kind of secondary cell chemical property testing apparatus, particularly a kind of simulated battery three electrode assemblies.
Background technology
Continuous development along with the secondary cell industry, application as a kind of important research means one simulated battery three-electrode system of electrode or battery becomes more and more widely, this simulated battery three-electrode system mainly is to be made by introduce reference electrode in the housing that accommodates electric core and electrolyte, its existing manufacture method is: in glove box, battery taken apart take out electric core after, lithium metal reference electrode is introduced in boring on the cover board, lug with electric core is weldingly fixed on the cover plate then, to insert with the electric core that cover plate links together in the aluminum hull again, inject an amount of electrolyte in the aluminum hull, at last with cover plate for sealing be welded on the opening part of aluminum hull.
The simulated battery three-electrode system of making by above method has following shortcoming: the welding fixed form is all adopted in being connected between (1) cover plate and cell polar ear, the aluminum hull, complicated operation, and make the building block of this simulated battery three-electrode system can not be repeated to use; (2) finish outside glove box owing to welding process, thereby inevitably introduced extraneous moisture, make the battery performance variation, these simulated battery three battery systems are the chemical property of test battery exactly; (3) reference electrode is located on this cover plate after on the cover board holing, thereby the position is fixing, and the consistency of reference electrode is bad; (4) shell of this simulated battery three-electrode system is an aluminum hull, thereby whether can not observe the state of its inner reference electrode good, and the whether variable color because moisture is more of electrolyte, is unfavorable for analysis of experiments; (5) interface of reference electrode and cover plate seals poor sealing, and complicated operating process by using epoxy resin.
Summary of the invention
In order to overcome above-mentioned shortcoming, the utility model provides a kind of simulated battery simple in structure, easy to make three electrode assemblies, only need pack in these simulated battery three electrode assemblies electric core, lithium metal and electrolyte just can be made the simulated battery three-electrode system easily, good airproof performance, and these simulated battery three electrode assemblies can use repeatedly.
The utility model is achieved through the following technical solutions:
A kind of simulated battery three electrode assemblies, it is provided with a shedding shell that is used for containing electric core and electrolyte, the opening part of this housing removably is provided with cover plate sealing together, embedding respectively on this cover plate has reference electrode lead-in wire, the positive wire that can link to each other with the positive pole ear of electric core, the negative wire that can link to each other with the negative lug of electric core, and the end of this reference electrode lead-in wire can be installed to form the lithium metal of reference electrode.
On the said structure basis, wherein:
Described housing and cover plate are transparent housing and cover plate.
Described housing and cover plate housing and the cover plate for being made by transparent glass handled formation through ground between housing and the cover plate and is sealed and matched, and is coated with vaseline at the ground place of this housing and cover plate.
The end of described positive wire and negative wire is welded with can clamp the iron clamp of positive pole ear and negative lug respectively.
The end of described reference electrode lead-in wire is hollowed out formation and can be filled in the cavity of lithium metal.
Described positive wire, negative wire and reference electrode lead-in wire are the copper wire that three length are respectively definite value.
Described cover plate is provided with an inner chamber and the extraneous breather valve that communicates for housing.
Only need in housing of the present utility model, be connected into electric core, the i.e. iron clamp of the end by positive wire on the cover plate and the negative wire positive pole ear and the negative lug of clamping electric core respectively, and in the cavity of reference electrode lead terminal, fill in lithium metal, in housing, inject an amount of electrolyte then, just finished the making of simulated battery three-electrode system after sealing.
Than prior art, advantage of the present utility model is:
(1) adopt the mode that on the cover board embeds reference electrode lead-in wire, positive wire and negative wire to form three combination of electrodes, sealing is fine, and the connected mode of cover plate and housing is being sealed and matched of forming between the grournd glass, by utilizing iron clamp to make that being connected to of cover plate and electric core is movable detachable, three combination of electrodes of the present utility model like this and housing are reusable in addition;
(2) utilizing the utility model to make the simulated battery three-electrode system does not need through welding, easy to assembly, can finish in glove box fully, has avoided introducing extraneous moisture, has guaranteed the normal performance of battery;
(3) reference electrode is to be embedded by the copper wire of certain-length on the cover board to form, the position relative fixed of reference electrode and cover plate, and the consistency of reference electrode is better;
(4) cover plate and housing are made by glass, and whether the state of reference electrode that can observe enclosure interior is good, and the whether variable color because moisture is more of electrolyte, help analysis of experiments;
(5) handle to form through ground between cover plate of making by glass and the housing and be sealed and matched, be coated with vaseline at the ground place of cover plate and housing, good airproof performance, manufacturing process is simple;
(6) can vacuumize enclosure interior by the breather valve on the cover plate, thereby can improve sealing effectiveness further.
Description of drawings
Fig. 1 is the section plan of a kind of simulated battery three electrode assemblies of the utility model.
Fig. 2 is the top plan view of a kind of simulated battery three electrode assemblies of the utility model.
Fig. 3 is the charging and discharging curve chart that the simulated battery three-electrode system that utilizes the utility model to make carries out 100 front and back of loop test.
Embodiment
One, below in conjunction with accompanying drawing structure of the present utility model is elaborated:
Please refer to Fig. 1, Fig. 2, a kind of simulated battery three electrode assemblies of the present utility model comprise housing 1 and the cover plate 2 with opening, housing 1 inner chamber can hold electric core and electrolyte, this cover plate 2 removably covers hermetically and is located on the opening of housing 1, embedding respectively on this cover plate 2 has reference electrode lead-in wire 3, the positive wire 4 that can link to each other with the positive pole ear of electric core, the negative wire 5 that can link to each other with the negative lug of electric core, these reference electrode lead-in wire 3 ends that are positioned at housing 1 are hollowed out forms cavity 7 (this cavity 7 can be a semi-spherical shape), in this cavity 7, can fill in lithium metal to form reference electrode, this reference electrode lead-in wire 3, positive wire 4 and negative wire 5 are the copper wire that three length are respectively definite value.These simulated battery three electrode assemblies are of a size of high 75mm, and wide is 47mm, and thick is 20mm.
Wherein, this housing 1 and cover plate 2 are made by transparent glass, can be clear that the internal state of housing 1, handling formation through ground between housing 1 and the cover plate 2 is sealed and matched, ground place at this housing 1 and cover plate 2 is coated with vaseline, sealing is better, end at positive wire 4 and negative wire 5 all is welded with an iron clamp 6 simultaneously, can clamp positive pole ear and negative lug respectively by this iron clamp 6, make being connected between cover plate 2 and electric core, the housing 1 be detachable connection like this.Also be provided with one and be used for the breather valve 8 that vacuumizes to housing 1 inside on this cover plate 2, this breather valve 8 can make housing 1 inner chamber communicate with the external world.
Simulated battery three electrode assemblies of the present utility model are owing to cover plate 2 and reference electrode lead-in wire 3, positive wire 4, negative wire 5 are combined into one, simple in structure, good airproof performance, and iron clamp 6 can be welded on the end of positive wire 4 and negative wire 5 in advance, and easy to make.Being assembled between cover plate 2 and electric core, the housing 1 is detachable, thereby these simulated battery three electrode assemblies can be repeatedly used.
Two, make the utility model and to utilize the utility model to make the detailed process of simulated battery three-electrode system as follows:
On the cover plate of making by glass 2, embed reference electrode lead-in wire 3, positive wire 4 and negative wire 5 are to form three combination of electrodes, the position relative fixed of reference electrode lead-in wire 3 and cover plate 2 wherein, breather valve 8 is installed in perforate on this cover plate 2 simultaneously, end at positive wire 4 and negative wire 5 welds an iron clamp 6 (as shown in Figure 1) respectively, vaseline is evenly smeared at ground place at cover plate 2 and housing 1, cover plate 2 is covered on the opening of housing 1, form then and be sealed and matched, open breather valve 8 and it is linked to each other with vacuum pump, housing 1 inside is evacuated, close breather valve 8 then, disconnect itself and being connected of vacuum pump, so far finish the making of a kind of simulated battery three electrode assemblies of the utility model, these simulated battery three electrode assemblies are preserved.
When utilizing these simulated battery three electrode assemblies to make the simulated battery three-electrode system, take out simulated battery three electrode assemblies of preserving and put into glove box, housing 1 is separated with cover plate 2, in glove box, take simultaneously a finished product battery apart, take out electric core, electric core is separated with battery cover board on being connected this electricity core, take out well found cover plate 2, positive pole ear and negative lug that the iron clamp 6 of the end of positive wire 4 and negative wire 5 is clamped this electricity core respectively, taking out lithium metal simultaneously fills in reference electrode and goes between in the cavity 7 of 3 ends to form reference electrode, should put into housing 1 together with cover plate 2 by the electricity core then, its cover plate 2 is positioned at the opening top of housing 1.Inject the electrolyte in the housing 1, make its just submergence electricity core, the also submergence reference electrode lithium metal of 3 ends that goes between, vaseline is evenly smeared at ground place at cover plate 2 and housing 1, the opening part formation of then cover plate 2 being covered at housing 1 is sealed and matched, so far finish the making of simulated battery three-electrode system, then this simulated battery three-electrode system is taken out from glove box, breather valve 8 is communicated with vacuum pump, opens vacuum pump, open breather valve 8 again, housing 1 inside is vacuumized, close breather valve 8 after reaching the certain vacuum degree, disconnect itself and being connected of vacuum pump then, this simulated battery three-electrode system promptly can be used for carrying out electrochemical property test.
Three, utilize the application study of the simulated battery three-electrode system that the utility model makes:
The battery three-electrode system of use prior art carries out electrochemical property test to be taken apart after one month, find because the inside battery moisture is more, and the electrolyte jaundice, reference electrode is oxidized.And utilize simulated battery three-electrode system that the utility model makes after test one month, and can see directly that the electrolyte color of the enclosure interior of being made by glass does not change, reference electrode is in good condition, illustrates that sealing is better.
Adopt charging and discharging curve chart that Agilent 34970A carries out 100 front and back of loop test to this simulated battery three-electrode system as shown in Figure 3, charging and discharging curve before and after 100 loop tests is to recently, the charging and discharging curve of the positive pole-reference electrode before and after the circulation overlaps substantially, and the charging and discharging curve of the negative pole-reference electrode before and after the circulation also overlaps substantially.Electromotive forces anodal and negative pole circulation front and back are stable in charge and discharge process, illustrate that the electromotive force difference of reference electrode before and after circulation is little, that is to say that lithium metal reference electrode does not change before and after circulation, reflected real battery charging and discharging curve, this simulated battery three-electrode system good airproof performance is described, test data is accurate, reaches test request.

Claims (7)

1. simulated battery three electrode assemblies, it is provided with a shedding shell that is used for containing electric core and electrolyte, it is characterized in that: the opening part of this housing removably is provided with cover plate sealing together, embedding respectively on this cover plate has reference electrode lead-in wire, the positive wire that can link to each other with the positive pole ear of electric core, the negative wire that can link to each other with the negative lug of electric core, and the end of this reference electrode lead-in wire can be installed to form the lithium metal of reference electrode.
2. a kind of simulated battery three electrode assemblies as claimed in claim 1 is characterized in that: described housing and cover plate are transparent housing and cover plate.
3. a kind of simulated battery three electrode assemblies as claimed in claim 1 or 2, it is characterized in that: described housing and cover plate housing and cover plate for making by transparent glass, handle formation through ground between housing and the cover plate and be sealed and matched, be coated with vaseline at the ground place of this housing and cover plate.
4. a kind of simulated battery three electrode assemblies as claimed in claim 1 is characterized in that: the end of described positive wire and negative wire is welded with can clamp the iron clamp of positive pole ear and negative lug respectively.
5. a kind of simulated battery three electrode assemblies as claimed in claim 1 is characterized in that: the end of described reference electrode lead-in wire is hollowed out formation and can be filled in the cavity of lithium metal.
6. a kind of simulated battery three electrode assemblies as claimed in claim 1 is characterized in that: described positive wire, negative wire and reference electrode lead-in wire are the copper wire that three length are respectively definite value.
7. a kind of simulated battery three electrode assemblies as claimed in claim 1 is characterized in that: described cover plate is provided with an inner chamber and the extraneous breather valve that communicates for housing.
CNU200720119760XU 2007-04-25 2007-04-25 A three-electrode device for simulation battery Expired - Lifetime CN201066708Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102044699A (en) * 2010-12-16 2011-05-04 天津力神电池股份有限公司 Preparation method of lithium ion polymer battery suitable for reference electrode
CN102192935A (en) * 2010-03-15 2011-09-21 深圳市比克电池有限公司 Electrolytic cell, apparatus and method for electrochemical measurement
CN102608539A (en) * 2012-03-08 2012-07-25 曙鹏科技(深圳)有限公司 Battery electrochemical testing method and device
CN102707243A (en) * 2012-06-18 2012-10-03 江苏理士电池有限公司 Detection method for dry load performance of polar plates
CN104459546A (en) * 2013-09-16 2015-03-25 中国科学院长春应用化学研究所 Lithium battery performance testing system
CN108987836A (en) * 2018-06-15 2018-12-11 桑顿新能源科技有限公司 A kind of lithium ion battery three-electrode system and preparation method thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102192935A (en) * 2010-03-15 2011-09-21 深圳市比克电池有限公司 Electrolytic cell, apparatus and method for electrochemical measurement
CN102044699A (en) * 2010-12-16 2011-05-04 天津力神电池股份有限公司 Preparation method of lithium ion polymer battery suitable for reference electrode
CN102608539A (en) * 2012-03-08 2012-07-25 曙鹏科技(深圳)有限公司 Battery electrochemical testing method and device
CN102608539B (en) * 2012-03-08 2014-05-14 曙鹏科技(深圳)有限公司 Battery electrochemical testing method and device
CN102707243A (en) * 2012-06-18 2012-10-03 江苏理士电池有限公司 Detection method for dry load performance of polar plates
CN104459546A (en) * 2013-09-16 2015-03-25 中国科学院长春应用化学研究所 Lithium battery performance testing system
CN104459546B (en) * 2013-09-16 2017-08-25 中国科学院长春应用化学研究所 A kind of lithium battery Performance Test System
CN108987836A (en) * 2018-06-15 2018-12-11 桑顿新能源科技有限公司 A kind of lithium ion battery three-electrode system and preparation method thereof

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Granted publication date: 20080528

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