CN103500859B - A kind of three-electrode battery device for lithium ion battery - Google Patents
A kind of three-electrode battery device for lithium ion battery Download PDFInfo
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- CN103500859B CN103500859B CN201310444519.4A CN201310444519A CN103500859B CN 103500859 B CN103500859 B CN 103500859B CN 201310444519 A CN201310444519 A CN 201310444519A CN 103500859 B CN103500859 B CN 103500859B
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- baffle plate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/183—Sealing members
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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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/46—Separators, membranes or diaphragms characterised by their combination with electrodes
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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
A kind of three-electrode battery device for lithium ion battery, this three-electrode battery device comprises housing and upper cover, this three-electrode battery device also comprises and is arranged on the first battery core baffle plate in housing and the second battery core baffle plate, this three-electrode battery device also comprises setting the first bolt on the cover board, second bolt, 3rd bolt and the 4th bolt, first bolt is connected reference electrode metal column with the 4th bolt, as reference electrode binding post, second bolt is connected positive and negative electrode metal column with the 3rd bolt, respectively as positive and negative electrode binding post, this three-electrode battery device also comprises the lug folder being arranged on described positive and negative electrode metal column end, the top of this lug folder connection first battery core baffle plate, the first described battery core baffle plate has groove, this groove contacts with reference electrode metal column.Good airproof performance of the present invention, accurately, capacity is adjustable, easy to loading and unloading, and fail safe is high in monitoring.
Description
Technical field
The present invention relates to a kind of three-electrode battery device for lithium ion battery.
Background technology
Lithium ion battery relies on the advantages such as its specific energy is high, the life-span is long, open circuit voltage is high, self-discharge rate is low, environmentally friendly, cheap, becomes the Xin Li army of Battery Market.Along with lithium ion battery widely using in electric automobile and energy storage field, the research work of its material, performance and safety problem is also got more and more.In order to study the performance of lithium ion battery plus-negative plate better, often introducing the 3rd electrode as reference electrode, using reference electrode as standard, testing the current potential of positive pole or negative pole contrast reference electrode respectively.
The main purpose of design lithium ion battery three-electrode battery is the change in voltage realizing positive pole, negative pole when flexible-packed battery normally works, and contributes the electrical property of full battery to studying positive pole, negative pole when battery real work respectively.
Lithium ion battery three-electrode battery is rich solution system preferably, and to ensure the ion channels between reference electrode and battery battery core, the good performance of the electrical property of battery core generally needs positive plate in battery core, compact as far as possible between negative plate and barrier film.Conventional flexible packing lithium ion battery generally realizes the compact of battery core by vacuumizing, but vacuumizes free electrolyte can be extracted lithium ion battery three-electrode battery.Therefore, need to find one and can realize three-electrode battery test performance, the device that in three-electrode battery, the electrical property of battery core normally plays can be ensured again simultaneously.
Utility model patent ZL200620175347.0 discloses a kind of three-electrode battery, comprise battery container, battery core, reference electrode and electrolyte, be riveted together as third electrode and cover plate using rivet, and be positioned at battery core inside, this three-electrode battery achieves the sealing property of battery.But this patent does not openly keep the method for different capabilities battery core compactedness.
Summary of the invention
The invention provides a kind of three-electrode battery device for lithium ion battery, good airproof performance, accurately, capacity is adjustable, easy to loading and unloading, and fail safe is high in monitoring.
In order to achieve the above object, the invention provides a kind of three-electrode battery device for lithium ion battery, this three-electrode battery device comprises housing and upper cover, this three-electrode battery device also comprises and is arranged on the first battery core baffle plate in housing and the second battery core baffle plate, this three-electrode battery device also comprises setting the first bolt on the cover board, second bolt, 3rd bolt and the 4th bolt, first bolt is connected reference electrode metal column with the 4th bolt, as reference electrode binding post, second bolt is connected positive and negative electrode metal column with the 3rd bolt, respectively as positive and negative electrode binding post, this three-electrode battery device also comprises the lug folder being arranged on described positive and negative electrode metal column end, the top of this lug folder connection first battery core baffle plate, the first described battery core baffle plate has groove, this groove contacts with reference electrode metal column.
Fit sealing is carried out by the first fastening bolt between described housing and upper cover.
Described second battery core baffle plate is fastenedly connected by the second fastening bolt and the first battery core baffle plate.
The first described bolt, the second bolt, the 3rd bolt and the 4th bolt are embedded by rubber seal and arrange on the cover board.
Described lug folder is bolted the top of the first battery core baffle plate.
Metal lithium sheet can be placed as reference electrode in described groove.
Can lithium ion battery cell be placed between described first battery core baffle plate and the second battery core baffle plate, according to placed battery core thickness, regulate the gap between two baffle plates by the second fastening bolt.
The present invention has following beneficial effect:
Battery core and reference electrode are separated by battery core fixture by lithium ion battery three-electrode battery provided by the invention, and by lug folder, pole is directly connected with reference electrode with the lug of battery core, battery core fixture is undertaken fastening by bolt, do not need to carry out vacuumizing process and can ensure the compact of battery core, under ensure that battery is in rich solution state, and there is good sealing property and contact, reduce three-electrode battery internal resistance, improve stability and the accuracy of three-electrode battery test, battery core fixture inner space has adjustable function, the performance test of different capabilities battery core can be realized, three-electrode battery can reuse, each parts are all detachable, be convenient to clean comprehensively, ensure the fail safe used.
Accompanying drawing explanation
Fig. 1 is the structural representation of three-electrode battery device for lithium ion battery of the present invention.
Fig. 2 is just very LiMn2O4, and negative pole is three electrode test charging and discharging curves of the full battery of lithium titanate.
The charging and discharging curve of Fig. 3 to be the lithium titanate anode corresponding with Fig. 2 and lithium manganate cathode with lithium metal be respectively reference electrode.
Embodiment
Following according to Fig. 1 ~ Fig. 3, illustrate preferred embodiment of the present invention.
As shown in Figure 1, the invention provides a kind of three-electrode battery device for lithium ion battery, this three-electrode battery device comprises housing 11 and upper cover 12, fit sealing is carried out by the first fastening bolt 13 between described housing 11 and upper cover 12, this three-electrode battery device also comprises the first battery core baffle plate 7 and the second battery core baffle plate 8 be arranged in housing 11, this three-electrode battery device also comprises and embeds by rubber seal the first bolt 1 be arranged on cover plate 12, second bolt 2, 3rd bolt 3 and the 4th bolt 4, first bolt 1 is connected reference electrode metal column 5 with the 4th bolt 4, as reference electrode binding post, second bolt 2 is connected positive and negative electrode metal column 14 with the 3rd bolt 3, respectively as positive and negative electrode binding post, this three-electrode battery device also comprises the lug folder 10 being arranged on described positive and negative electrode metal column 14 end, this lug folder 10 is bolted the top of the first battery core baffle plate 7, the first described battery core baffle plate 7 has groove 6, this groove 6 contacts with reference electrode metal column 5, metal lithium sheet can be placed as reference electrode in described groove 6.Described second battery core baffle plate 8 is fastenedly connected by the second fastening bolt 9 and the first battery core baffle plate 7.Can lithium ion battery cell be placed between described first battery core baffle plate 7 and the second battery core baffle plate 8, according to placed battery core thickness, regulate the gap between two baffle plates by the second fastening bolt 9.
Described housing 11 and upper cover 12 adopt but are not limited to stainless steel.Described first battery core baffle plate 7 and the second battery core baffle plate 8 adopt but are not limited to polytetrafluoroethylene.Described reference electrode metal column 5 adopts but is not limited to metallic copper or metallic aluminium.Described positive and negative electrode metal column 14 presss from both sides 10 with the lug of end and adopts but be not limited to metallic copper or metallic aluminium.
With LiMn2O4 (LMO) for positive pole, lithium titanate (LTO) be negative pole assembling lithium ion battery, battery capacity by lithium titanate anode capacity limit, described lithium ion battery called after MT battery.Using metal lithium sheet as reference electrode, three-electrode battery device provided by the invention is utilized to carry out electrical property research to MT battery.
Fig. 2 is the full battery three electrode test charging and discharging curve of MT battery, the charging and discharging curve of Fig. 3 to be the lithium manganate cathode corresponding with Fig. 2 and lithium titanate anode with lithium metal be respectively reference electrode.
The charging/discharging voltage scope of the MT battery wherein arranged is: 2.8V ~ 1.8V, and charging and discharging currents is 0.5C multiplying power electric current.
As can be seen from Figure 2, the discharge voltage plateau of the full battery of MT battery is 2.5V ~ 2.25V, and after being discharged to 2.25V, voltage sharply drops to cut-ff voltage 1.8V; Charging voltage platform is 2.5 ~ 2.7V, and after charging to 2.7V, voltage sharply rises to cut-ff voltage 2.8V.
Analyze curve in Fig. 3 corresponding with it can find, in the whole discharge process of full battery, lithium titanate anode is in de-lithium process, and potential range is 1.5V ~ 2.0V, and lithium manganate cathode is in embedding lithium process, and potential range is 3.97V ~ 3.84V.In the whole charging process of full battery, lithium titanate anode is in embedding lithium process, and potential range is 2.0 ~ 1.3V, and lithium manganate cathode is in de-lithium process, and potential range is 4.04V ~ 4.15V.
Visible, in the charge and discharge process of full battery, lithium manganate cathode is in its removal lithium embedded potential plateau region always, and the removal lithium embedded reaction of limited capacity pole lithium titanate anode is depended in the cut-off of battery charging and discharging.
Although content of the present invention has done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple amendment of the present invention and substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (3)
1. a three-electrode battery device for lithium ion battery, it is characterized in that, this three-electrode battery device comprises housing (11) and cover plate (12), this three-electrode battery device also comprises and is arranged on the first battery core baffle plate (7) in housing (11) and the second battery core baffle plate (8), this three-electrode battery device also comprises the first bolt (1) be arranged on cover plate (12), second bolt (2), 3rd bolt (3) and the 4th bolt (4), first bolt (1) is connected reference electrode metal column (5) with the 4th bolt (4), as reference electrode binding post, second bolt (2) is connected positive and negative electrode metal column (14) with the 3rd bolt (3), respectively as positive and negative electrode binding post, this three-electrode battery device also comprises lug folder (10) being arranged on described positive and negative electrode metal column (14) end, this lug folder (10) connects the top of the first battery core baffle plate (7), the first described battery core baffle plate (7) has groove (6), this groove (6) connects with reference electrode metal column (5),
Fit sealing is carried out by the first fastening bolt (13) between described housing (11) and cover plate (12);
Described second battery core baffle plate (8) is fastenedly connected by the second fastening bolt (9) and the first battery core baffle plate (7);
Described the first bolt (1), the second bolt (2), the 3rd bolt (3) and the 4th bolt (4) are embedded by rubber seal and are arranged on cover plate (12);
Metal lithium sheet can be placed as reference electrode in described groove (6).
2. three-electrode battery device for lithium ion battery as claimed in claim 1, is characterized in that, described lug folder (10) is bolted the top of the first battery core baffle plate (7).
3. three-electrode battery device for lithium ion battery as claimed in claim 1, it is characterized in that, lithium ion battery cell can be placed between described first battery core baffle plate (7) and the second battery core baffle plate (8), according to placed battery core thickness, regulate the gap between two baffle plates by the second fastening bolt (9).
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CN201310444519.4A CN103500859B (en) | 2013-09-26 | 2013-09-26 | A kind of three-electrode battery device for lithium ion battery |
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CN201310444519.4A CN103500859B (en) | 2013-09-26 | 2013-09-26 | A kind of three-electrode battery device for lithium ion battery |
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CN103500859B true CN103500859B (en) | 2016-02-17 |
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Families Citing this family (9)
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KR102627188B1 (en) * | 2015-05-08 | 2024-01-22 | 에노빅스 코오퍼레이션 | Supplementary negative electrodes of secondary batteries |
CN105785163A (en) * | 2016-01-14 | 2016-07-20 | 江西稀有稀土金属钨业集团有限公司 | Three-electrode combination apparatus for rapidly testing circle life of hydrogen storage alloy powder |
CN106842059A (en) * | 2017-03-07 | 2017-06-13 | 河海大学常州校区 | Lithium battery both positive and negative polarity electrochemical properties on-line monitoring method based on three electrode measurements |
CN107170943A (en) * | 2017-07-05 | 2017-09-15 | 江西优特汽车技术有限公司 | Dividing plate and the Soft Roll electrokinetic cell with it |
CN107827719B (en) * | 2017-11-22 | 2019-12-20 | 厦门大学 | Application of metal oxide catalyst in preparation of poly (methoxy dimethyl ether) |
CN108630980A (en) * | 2018-05-09 | 2018-10-09 | 合肥国轩高科动力能源有限公司 | A kind of three electrode soft-package battery of lithium ion and its test method |
CN113131026B (en) * | 2019-12-30 | 2022-09-30 | 荣盛盟固利新能源科技有限公司 | Evaluation device and evaluation method for battery health state of hard-shell battery |
CN112798959A (en) * | 2020-12-30 | 2021-05-14 | 东方旭能(山东)科技发展有限公司 | Three-electrode testing device for lithium battery |
CN112986352B (en) * | 2021-04-06 | 2022-12-30 | 新乡医学院三全学院 | Battery material electrochemical performance testing device |
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CN200997429Y (en) * | 2006-12-18 | 2007-12-26 | 上海比亚迪有限公司 | Triple-electrode battery |
CN201038264Y (en) * | 2007-04-25 | 2008-03-19 | 上海比亚迪有限公司 | Lithium ion battery emulated three electrode system |
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JP4902235B2 (en) * | 2006-03-20 | 2012-03-21 | ダイハツ工業株式会社 | Electrochemical cell |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN200997429Y (en) * | 2006-12-18 | 2007-12-26 | 上海比亚迪有限公司 | Triple-electrode battery |
CN201038264Y (en) * | 2007-04-25 | 2008-03-19 | 上海比亚迪有限公司 | Lithium ion battery emulated three electrode system |
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