CN206893736U - A kind of formation device of solution 3V level lithium titanate battery flatulence - Google Patents
A kind of formation device of solution 3V level lithium titanate battery flatulence Download PDFInfo
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- CN206893736U CN206893736U CN201720734269.1U CN201720734269U CN206893736U CN 206893736 U CN206893736 U CN 206893736U CN 201720734269 U CN201720734269 U CN 201720734269U CN 206893736 U CN206893736 U CN 206893736U
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- chemical conversion
- battery
- temperature control
- formation device
- thermistor
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model provides a kind of formation device of solution 3V level lithium titanate battery flatulence, including temperature control chemical conversion case and chemical conversion unit, 8 × n chemical conversion unit is provided with temperature control chemical conversion case, n=1~5, the heater element of each chemical conversion unit is PTC thermistor, and the feed that each thermistor for being melted into unit is connected to when the other Battery pack of centralized Control cabinet importing discharges by wire heats for chemical conversion element cell.The utility model devises the temperature control chemical conversion case heated in a manner of PTC thermistor, and PTC directly heats the aluminium alloy heat-conducting plate for holding lithium titanate battery, makes the temperature control of chemical conversion battery accurate, and firing rate is fast, battery temperature is uniform.It is simple, convenient.Heated using the feed of battery discharge, easily controllable, energy-conservation.
Description
Technical field
The utility model belongs to the field that chemical energy is changed into the device of electric energy, and in particular to one kind solves 3V level lithium titanates
The formation device of battery flatulence.
Background technology
Spinel lithium titanate (Li4Ti5O12) it is a kind of novel cathode material for lithium ion battery, after Lithium-ion embeding lattice,
Crystal formation does not change, and unit cell volume change is less than 1%, is referred to as " zero strain material ", it is extraordinary that this make it that battery has
Charge-discharge performance.Spinel lithium titanate material is three-dimensional lithium ion conductor, and ion diffusional resistance is small, and charge/discharge rates are fast.
Higher (the 1.55V vs.Li/Li of the embedding lithium electrode current potential of the material+), battery can avoid the growth of Li dendrite in charging process,
Show good overcharge safety characteristic.In addition, when internal short-circuit occurs in battery, lithium titanate anode can be quickly converted to absolutely
Edge body, electric current is cut off, shows excellent short-circuit protection characteristic.
Spinel-type nickel ion doped (Li1-xNi0.5Mn1.5O4) positive electrode be three-dimensional conductive electronic and ionic mixed conductor,
Its discharge platform is 4.75V (relative to lithium electrode), theoretical specific capacity 146.7mAh/g.Using nickel ion doped as positive pole, metatitanic acid
Lithium has 3.2V rated operational voltage for the lithium ion battery of negative pole, and energy density is high, can quickly fill under cryogenic
Electric discharge, and cycle performance is good, and security is better than ferric phosphate lithium cell, and these features make it should as power lithium-ion battery
With there is huge business potential.
However, nickel ion doped-lithium titanate battery system flatulence outstanding problem, the gas generated and electrolysis of lithium titanate battery
H in liquid2O and HF content is directly proportional.Nickel ion doped electrode potential is higher, in LiPF6In use, anion in electrolyte
(PF6 -) be easily oxidized, caused hydrofluoric acid meeting corroding electrode material and aluminum foil current collector, produce hydrogen and moisture.Moisture is again
Can be with anion (PF6 -) reaction generation hydrofluoric acid, so move in circles, electrode material is constantly corroded, electrolyte is in titanium
Sour cathode of lithium surface, which produces gas, to increase inner pressure of battery, cell expansion, capacity rapid decrease.
Utility model content
For weak point existing for this area, the purpose of this utility model is to propose a kind of solution 3V level lithium titanate batteries
The formation device of flatulence.
A kind of formation device of solution 3V level lithium titanate battery flatulence, including temperature control chemical conversion case and chemical conversion unit, temperature control
8 × n chemical conversion unit is provided with into case, n=1~5, each heater element for being melted into unit is thermistor.Each chemical conversion unit
Thermistor centralized Control cabinet is connected with by wire, the centralized Control cabinet is additionally provided with and Battery formation discharge loop connects
The wire connect.
Wherein, the chemical conversion unit includes fixture backboard, fixture, discharge chamber, and the folder of placing battery is set on fixture backboard
Tool, each fixture are provided with upper mounted plate, aluminium alloy heat-conducting plate, portable plate and bottom plate from top to bottom, portable plate and lower solid
Fixed board is parallel, there is spring connection between portable plate and bottom plate；Thermistor is posted on the aluminium alloy heat-conducting plate；The row
Air cavity is located at the top of upper mounted plate.
Preferably, the thermistor is the PTC thermistor of 12V voltage specifications.
Further, every 4 chemical conversions unit is a battery pack for providing feed.
Every 4 chemical conversions unit is one group, and when a Battery pack, which is melted into, to discharge, centralized Control cabinet collects its feed output to another
The PTC power supplies of one group of 4 chemical conversion unit.
Wherein, the temperature control chemical conversion case is closed casing, and each discharge chamber is all connected to a discharge duct, the exhaust
The gas vent of pipeline is located at the outside of temperature control chemical conversion case.
Using device of the present utility model, temperature control chemical synthesis technology is：The battery sealed temporarily is put into temperature control chemical conversion case,
Liquid injection port is connected with discharge chamber, is passed through argon gas protection in temperature control chemical conversion case, is stood 15~40min, is heated to temperature as 55~85
DEG C, using 0.1C constant-current charges to 3.5~3.8V, 20~40min is then stood, is vented by discharge chamber；Using 0.1C constant currents
Electric discharge, stand 10~20min；0.2C constant current charge-discharges 1~2 time again.
Wherein, the temperature control chemical conversion case is closed casing, and each discharge chamber is all connected to a discharge duct, the exhaust
The gas vent of pipeline is located at the outside of temperature control chemical conversion case.
In formation process, feed when PTC thermistor is discharged with chemical conversion is heated, and every 4 batteries are a group, often
PTC thermistor feed heating is mutually provided between two battery packs.
The beneficial effects of the utility model are：
The utility model devises the temperature control chemical conversion case heated in a manner of PTC thermistor, and PTC, which is directly heated, holds metatitanic acid
The aluminium alloy heat-conducting plate of lithium battery, make the temperature control of chemical conversion battery accurate, firing rate is fast, battery temperature is uniform, operation letter
Singly, conveniently.Heated using the feed of battery discharge, easily controllable, energy-conservation.Using the wide high voltage withstanding electrolysis of electrochemical window
Liquid system, and using temperature control chemical synthesis technology manufacture 3V levels spinel nickel LiMn2O4-lithium titanate battery, solve battery flatulence and ask
Topic, battery cycle life length.
Brief description of the drawings
Fig. 1 is the front view for the formation device structure of rectangular cell.
Fig. 2 is the side view of formation device structure.
Fig. 3 is the structure chart that temperature control is melted into case.
Fig. 4 is the cycle performance of battery figure of embodiment 1.
In figure, 1 is fixture backboard, and 2 be discharge chamber, and 3 be chemical conversion contact, and 4 be aluminium alloy heat-conducting plate, and 5 be PTC temperature-sensitives electricity
Resistance, 6 be portable plate, and 7 be bottom plate, and 8 be that temperature control is melted into case, and 9 be discharge duct.
Embodiment
Illustrate the utility model below by most preferred embodiment.Those skilled in the art institute it should be understood that, embodiment only
For illustrating the utility model rather than for limiting the scope of the utility model.
In embodiment, unless otherwise instructed, used means are technological means known in those skilled in the art.
Embodiment 1：
There are eight sets of chemical conversion units in the temperature control chemical conversion case 8 of the present embodiment, often set chemical conversion unit includes fixture backboard 1, is vented
Chamber 2, it is melted into contact 3, aluminium alloy heat-conducting plate 4, PTC-ceramic heating plate 5, portable plate 6, bottom plate 7.Aluminium alloy heat-conducting plate 4
Above portable plate 6, PTC-ceramic heating plate 5 is attached on aluminium alloy heat-conducting plate 4.Discharge chamber 2 and chemical conversion contact 3 are located at aluminium alloy
The top of heat-conducting plate 4.The PTC-ceramic heating plate 5 of all chemical conversion units is connected to centralized Control cabinet by wire and imports other Battery pack
Feed control battery heating-up temperature during electric discharge.Centralized Control cabinet is located at outside temperature control chemical conversion case 8.
Portable plate 6 is parallel with bottom plate 7, and spring is equipped between portable plate and bottom plate.Each discharge chamber 2 is all connected to
Discharge duct 9, discharge duct are stretched out outside temperature control chemical conversion case.
The PTC sensitive ceramic resistors of chemical conversion unit use 12V voltage specifications, and heat-conducting plate can ensure that internal temperature of battery is distributed
Uniformly, formation device is inserted in closed temperature control chemical conversion case.Temperature control chemical conversion case is passed through nitrogen and battery is protected.
In formation process, feed when PTC thermistor is discharged with chemical conversion is heated, and every 4 batteries are an offer
The battery pack of feed.Every two Battery pack mutually provides PTC thermistor feed heating.
Square nickel ion doped-lithium titanate lithium ion battery is prepared, battery specifications size is：Thickness 18mm, width 65mm are high
Spend 140mm, the ampere-hour of design capacity 10.
Positive active material is by Surface coating Al2O3The spinel-type nickel ion doped of processing, square nickel ion doped/titanium
The making step of acid lithium battery is as follows：
(1) prepared by slurries
Positive pole matches：Active material/electrically conductive graphite KS-6/ conductive black Super P/ adhesive PVDF=92/2/3/
3%.
Negative pole matches：Active material/conductive black Super P/ adhesive PVDF=93/2/5%.
(2) prepared by pole pieces,
(3) prepared by poles group,
(4) batteries assemble,
(5) vacuum liquid fillings,
(6) the electrically heated accurate temperature controlling chemical conversion of feedback during Battery formation electric discharge is utilized：Enter in temperature control chemical conversion case (Fig. 1-3)
OK.
Interim sealed battery is put into formation cabinet, discharge chamber is connected with liquid injection port, is stood 30min, is put with other Battery pack
The 12V feeds of electricity are passed through PTC-ceramic heating plate, are heated to temperature as 80 DEG C, using 0.1C constant-current constant-voltage chargings to 3.6V, then
30min is stood, is vented by discharge chamber；Using 0.1C constant-current discharges to 2.7V, 15min is stood.0.2C constant-current charges to 3.6V,
15min is stood, reignition/charging is once.
(7) vacuum seal
Battery is put into vacuum sealer by chemical conversion after terminating, and is firmly compressed battery case, it is returned to original thickness,
- 0.09MPa is evacuated down to, an aluminium rivet is pressed into liquid injection port.After battery sends out drying shed, rinsed at once on running water residual
Remaining electrolyte, electrolytic corrosion aluminum hull is prevented, surface is dried up with compressed air.
(8) performance detections
With 1C constant-current constant-voltage chargings to 3.6V, cut-off current 0.01C.Then followed with 5C constant-current discharges to 2.7V, discharge and recharge
Ring 2000 times, flatulence, 2000 circulations do not have capacity attenuation to battery substantially, as a result capability retention is shown in Fig. 4 more than 99%.
Embodiment above is only that preferred embodiment of the present utility model is described, not to the utility model
Scope be defined, on the premise of the utility model design spirit is not departed from, this area ordinary skill technical staff to this
The all variations and modifications that the technical scheme of utility model is made, the guarantor that claims of the present utility model determine all should be fallen into
In the range of shield.
Claims (5)
- A kind of 1. formation device of solution 3V level lithium titanate battery flatulence, it is characterised in that：It is single including temperature control chemical conversion case and chemical conversion Member, temperature control, which is melted into case, is provided with 8 × n chemical conversion unit, and n=1~5, each heater element for being melted into unit is thermistor, respectively The thermistor of chemical conversion unit is connected with centralized Control cabinet by wire, and the centralized Control cabinet is additionally provided with to be put with Battery formation The wire of electrical circuit connection.
- 2. formation device according to claim 1, it is characterised in that：The chemical conversion unit includes fixture backboard, fixture, row Air cavity, the fixture of placing battery is set on fixture backboard, and each fixture is provided with upper mounted plate, aluminium alloy heat conduction from top to bottom Plate, portable plate and bottom plate, portable plate is parallel with bottom plate, there is spring connection between portable plate and bottom plate；It is described Thermistor is posted on aluminium alloy heat-conducting plate；The discharge chamber is located at the top of upper mounted plate.
- 3. formation device according to claim 1, it is characterised in that：The thermistor is warm for the PTC of 12V voltage specifications Quick resistance.
- 4. according to the formation device described in any one of claims 1 to 3, it is characterised in that every 4 chemical conversions unit is an offer The battery pack of feed.
- 5. according to the formation device described in any one of claims 1 to 3, it is characterised in that the temperature control chemical conversion case is closed Casing, each discharge chamber are all connected to a discharge duct, and the gas vent of the discharge duct is located at the outside of temperature control chemical conversion case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720734269.1U CN206893736U (en) | 2017-06-22 | 2017-06-22 | A kind of formation device of solution 3V level lithium titanate battery flatulence |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720734269.1U CN206893736U (en) | 2017-06-22 | 2017-06-22 | A kind of formation device of solution 3V level lithium titanate battery flatulence |
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| CN206893736U true CN206893736U (en) | 2018-01-16 |
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| CN201720734269.1U Active CN206893736U (en) | 2017-06-22 | 2017-06-22 | A kind of formation device of solution 3V level lithium titanate battery flatulence |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109947154A (en) * | 2019-02-28 | 2019-06-28 | 深圳市新浦自动化设备有限公司 | Battery formation fixture temperature regulating device and Battery formation temperature control method |
-
2017
- 2017-06-22 CN CN201720734269.1U patent/CN206893736U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109947154A (en) * | 2019-02-28 | 2019-06-28 | 深圳市新浦自动化设备有限公司 | Battery formation fixture temperature regulating device and Battery formation temperature control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: GEJIU SHENGBIHE INDUSTRIAL Co.,Ltd. Assignor: BEIJING SUPERHOO TECHNOLOGY CO.,LTD. Contract record no.: X2022440020006 Denomination of utility model: A formation device for solving the flatulence of 3V lithium titanate battery Granted publication date: 20180116 License type: Exclusive License Record date: 20220629 |
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| EE01 | Entry into force of recordation of patent licensing contract |