CN204085150U - A kind of nickelic anode material for lithium-ion batteries sintering equipment - Google Patents
A kind of nickelic anode material for lithium-ion batteries sintering equipment Download PDFInfo
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- CN204085150U CN204085150U CN201420468603.XU CN201420468603U CN204085150U CN 204085150 U CN204085150 U CN 204085150U CN 201420468603 U CN201420468603 U CN 201420468603U CN 204085150 U CN204085150 U CN 204085150U
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- burner hearth
- gas
- sintering equipment
- lithium
- anode material
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Abstract
The utility model provides a kind of nickelic anode material for lithium-ion batteries sintering equipment, the air exhauster comprise burner hearth, being connected with burner hearth, and air inlet is arranged on burner hearth, and heating system and agglomerating chamber are arranged in burner hearth.This apparatus structure is simple, easy to operate, the nickelic anode material for lithium-ion batteries excellent performance of preparation, and suitable colleges and universities, scientific research institutions and enterprises and institutions use.
Description
Technical field
The utility model relates to anode material for lithium-ion batteries preparation facilities, specifically the special sintering equipment of a kind of nickelic anode material for lithium-ion batteries.
Background technology
Nickelic anode material for lithium-ion batteries finished product (LiNi
x m
1-
x o
2,
x>=0.5) in, nickel ion will be Ni
3+form, but Ni in raw material
2+be difficult to be oxidized to Ni
3+and Ni
3+easily spontaneously under > 600 DEG C of hot conditions be reduced into Ni
2+, and Li
+and Ni (0.76)
2+(0.69) radius closely, and part Ni occupies Li position in crystal structure, forms small structural collapse district, and this phenomenon is referred to as lithium/nickel mixing, and lithium/nickel mixing affects the residual alkali number (Li of material surface
2cO
3, LiHCO
3with LiOH total content).Therefore, nickelic anode material for lithium-ion batteries needs to adopt high purity oxygen gas atmosphere sintering (usually to require body of heater O
2concentration>=98%), reduce the Ni in nickelic positive electrode as far as possible
2+content, thus reduce atom mixing, improve electro-chemical activity and the cyclical stability of material.But at present, general chamber type electric resistance furnace is all a blow vent, an exhaust outlet, inlet calibre is less, and air-flow is faint, and in whole sintering process, body of heater is barotropic state, the gas produced in high-temperature sample sintering process can only be undertaken spreading by concentration gradient and discharge with air-flow, therefore the nickelic anode material for lithium-ion batteries sample lithium/nickel mixing prepared is large, and surperficial residual alkali number is too high, and material property is poor.
Utility model content
For the technical problem of prior art, the utility model provides the good nickelic anode material for lithium-ion batteries sintering equipment of a kind of sintering effect.
The purpose of this utility model solves by the following technical programs:
A kind of nickelic anode material for lithium-ion batteries sintering equipment, the air exhauster comprise burner hearth, being connected with burner hearth, air inlet is arranged on burner hearth, and heating system and agglomerating chamber are arranged in burner hearth.Agglomerating chamber is put into by needing the nickelic anode material for lithium-ion batteries of sintering, in burner hearth, the high purity oxygen gas passing into purity>=98% is continued by air inlet, open air exhauster to bleed to burner hearth, by controlling the size of described exhaust blower blade rotating speed or power of fan size adjustment nickelic anode material for lithium-ion batteries sintering equipment internal gas flow flow velocity, described air-flow velocity is 0.4-50m
3/ h, after the air of drained burner hearth, open the heater switch of heating system, heat-treat by setup program the nickelic anode material for lithium-ion batteries of agglomerating chamber, heating rate is 1-20oC/min.The surface of oxygen nickelic anode material for lithium-ion batteries in agglomerating chamber of flowing produces negative pressure, the oxycarbide that produces in nickelic lithium ion anode material sintering process and steam are discharged smoothly, and provide high purity oxygen gas for the sintering process of agglomerating chamber, reduce the Ni in nickelic positive electrode as far as possible
2+content, thus reduce atom mixing, improve electro-chemical activity and the cyclical stability of material.
Preferably, described heating system is 1 or 2, and the layout of 2 heating systems makes fire box temperature more even.
Preferably, described heating system is heating rod, the normal specimens sintering range 700-1200 DEG C that heating system meets, as 720 DEG C, 750 DEG C, 800 DEG C, 850 DEG C, 980 DEG C, 1050 DEG C; The speed heated up or lower the temperature is 1-20oC/min, as 3oC/min, 8oC/min, 13oC/min, 20oC/min.
Preferably, described air inlet is arranged on the side of heating system in burner hearth, make the high purity oxygen gas being entered burner hearth by air inlet first carry out preheating through heating system, avoid cold oxygen directly to enter high temperature sintering room, affect the temperature homogeneity on nickelic anode material for lithium-ion batteries surface.
Preferably, described sintering equipment also comprises gas-circulating system, the oxygen passed into can be recycled, reduce costs.
Preferably, the filter that described gas-circulating system comprises gas switching valves, is connected with gas switching valves, the other end of described gas switching valves is connected with air exhauster, and the other end of described filter is connected with air inlet.
Preferably, the filter type that described filtration system adopts is the one or more kinds of modes in chemisorbed, physical absorption, gas liquefaction, rectifying.The chemical substance that described chemisorbed adopts is alkaline solution, soda lime, the oxycarbide in alkaline solution absorption mist, the steam in soda lime absorption mist.Described physical absorption is namely by the avtive spot of the bigger serface active material surface physisorption to steam and oxycarbide.Described gas liquefaction, rectifying, separation, for utilizing the condensing temperature of gas with various different, progressively pressurizeing to mist, being cooled to the condensation temperature of each component gas step by step, preferentially isolating the gas that condensing temperature is lower.
Preferably, described gas switching valves is threeway, the connection gas outlet, one end of gas switching valves; Described sintering equipment is provided with pressure checking device, in sintering process, when the pressure in sintering equipment is more than or equal to the limiting pressure of setting, automatically makes gas switching valves be communicated with gas outlet and carries out pressure release; In addition before heating, gas switching valves is communicated with gas outlet by the air discharge in burner hearth.Limiting pressure is set as 50Pa-1000Pa, as 50Pa, 80Pa, 200Pa, 269Pa, 500Pa, 780Pa, 920Pa.
Preferably, described gas-circulating system also comprises cooling device, and one end of cooling device is connected with air exhauster, and the other end of cooling device is connected with gas switching valves.
Preferably, described gas-circulating system also comprises holding vessel, and one end of holding vessel is connected with filter, and the other end of holding vessel is connected with air inlet, plays the effect of store buffer.
Preferably, described cooling device is circulating water device, makes gas temperature be down to less than 100 DEG C, and the steam in mist is liquefied, and reach the effect of the steam in preliminary removing mist, remaining steam is finally filtered device removing.
The beneficial effects of the utility model are: nickelic anode material for lithium-ion batteries sintering equipment structure is simple, easy to operate, the nickelic anode material for lithium-ion batteries excellent performance of preparation, and suitable colleges and universities, scientific research institutions and enterprises and institutions use.
Accompanying drawing explanation
Fig. 1 is the structural representation of nickelic anode material for lithium-ion batteries sintering equipment embodiment 1;
Fig. 2 is the structural representation of nickelic anode material for lithium-ion batteries sintering equipment embodiment 2;
Fig. 3 is the structural representation of nickelic anode material for lithium-ion batteries sintering equipment embodiment 3.
Wherein: 1-air inlet; 2-heating system; 3-agglomerating chamber; 4-burner hearth; 5-air exhauster; 6-cooling device; 7-gas switching valves; 8-gas outlet; 9-filter; 10-holding vessel.
Detailed description of the invention
Below in conjunction with embodiment, embodiment of the present utility model is described in detail.It will be understood to those of skill in the art that following examples are only preferred embodiment of the present utility model, so that understand the utility model better, thus should not be considered as limiting scope of the present utility model.For a person skilled in the art, the utility model can have various modifications and variations, all within spirit of the present utility model and principle, and any amendment done, equivalent replacement or improvement etc., all should be included within protection domain of the present utility model.
As shown in Figure 1, a kind of nickelic anode material for lithium-ion batteries sintering equipment, the air exhauster 5 comprising burner hearth 4 and be connected with burner hearth 4, air inlet 1 is arranged on burner hearth 4 embodiment 1, and heating system 2 and agglomerating chamber 3 are arranged in burner hearth 4.Agglomerating chamber 3 is put into by needing the nickelic anode material for lithium-ion batteries of sintering, in burner hearth 4, the high purity oxygen gas passing into purity >=98% is continued by air inlet 1, open air exhauster 5 pairs of burner hearths 4 to bleed, bleed after a period of time, detect the concentration of oxygen at air exhauster 5, the air illustrating in burner hearth 4 when the concentration of oxygen reaches 98% has been excluded and has been high purity oxygen gas atmosphere in burner hearth 4; Then open the heater switch of heating system 2, agglomerating chamber 3 sample is heat-treated by setup program.Oxygen is heated to 1000 DEG C through heating system 2, and heating rate is 20 DEG C/min, regulates the power of air exhauster 5 to make the air-flow velocity of oxygen be 50m
3/ h, swiftly flowing oxygen blow material surface, effectively can get rid of the gas that material surface produces.The gas that high speed oxygen entraining air stream carries material surface travels forward, make the gas on material surface thinner compared to air, thus formation negative pressure, the negative pressure produced is conducive to the gas componant that material produces in high-temperature sintering process further and effectively discharges, thus form a benign cycle, the glide path of dotted arrow composition high purity oxygen gas in burner hearth 4 in Fig. 1.Nickelic anode material for lithium-ion batteries sintering equipment provides high purity oxygen gas for the sintering process in agglomerating chamber 3, reduces the Ni in nickelic positive electrode as far as possible
2+content, thus reduce atom mixing, improve electro-chemical activity and the cyclical stability of material.
As shown in Figure 2, many gas-circulating systems, make the oxygen passed into recycle, reduce costs embodiment 2 compared with embodiment 1.A kind of nickelic anode material for lithium-ion batteries sintering equipment, the air exhauster 5 comprising burner hearth 4 and be connected with burner hearth 4, air inlet 1 is arranged on burner hearth 4, heating system 2 and agglomerating chamber 3 are arranged in burner hearth 4, the filter 9 that described gas-circulating system comprises gas switching valves 7, is connected with gas switching valves 7, the other end of described gas switching valves 7 is connected with air exhauster 5, and the other end of described filter 9 is connected with air inlet 1.Agglomerating chamber 3 is put into by needing the nickelic anode material for lithium-ion batteries of sintering, in burner hearth 4, the high purity oxygen gas passing into purity >=98% is continued by air inlet 1, open air exhauster 5 pairs of burner hearths 4 to bleed, gas switching valves 7 is communicated with gas outlet 8 and carries out pressure release, bleed after a period of time, detect the concentration of oxygen in gas outlet 8, the air illustrating in burner hearth 4 when the concentration of oxygen reaches 98% has been excluded and has been high purity oxygen gas atmosphere in burner hearth 4; Then gas switching valves 7 closes gas outlet 8, open the heater switch of heating system 2, agglomerating chamber 3 sample is heat-treated by setup program, when the pressure in sintering equipment is more than or equal to the limiting pressure of setting, automatically make gas switching valves be communicated with gas outlet and carry out pressure release, limit pressure can be 50Pa, 80Pa, 200Pa, 269Pa, 500Pa, 780Pa, 920Pa.The oxycarbide produced in nickelic lithium ion anode material sintering process is followed together with oxygen with steam and is discharged, when filter 9, filter 9 adopts the mode of chemisorbed and physical absorption to remove oxycarbide in mist and steam, as chemisorbed adopts the mixture of NaOH and soda lime to get rid of oxycarbide in mist and steam, physical absorption utilizes adsorbent solids surface molecular and gas molecule active force to be greater than active force between gas molecule, thus makes gas molecule be adsorbed on adsorbent surface.By selecting a selective gas adsorbent (CO absorption
2molecule does not adsorb O
2molecule) as zeolite 5A molecular sieve can effective CO absorption
2molecule; The high purity oxygen gas of purity>=98% only remaining pure after filter 9, high purity oxygen gas can pass in burner hearth 4 again and recycle.
Embodiment 3 as shown in Figure 3, many cooling device 6 and holding vessel 10 compared with embodiment 2.A kind of nickelic anode material for lithium-ion batteries sintering equipment, the air exhauster 5 comprising burner hearth 4 and be connected with burner hearth 4, air inlet 1 is arranged on burner hearth 4, heating system 2 and agglomerating chamber 3 are arranged in burner hearth 4, the air exhauster 5, cooling device 6, gas switching valves 7, the filter 9 that are connected successively, the other end of filter 9 is connected with air inlet 1.Agglomerating chamber 3 is put into by needing the nickelic anode material for lithium-ion batteries of sintering, in burner hearth 4, the high purity oxygen gas passing into purity >=98% is continued by air inlet 1, open air exhauster 5 pairs of burner hearths 4 to bleed, gas switching valves 7 is communicated with gas outlet 8 and carries out pressure release, bleed after a period of time, detect the concentration of oxygen in gas outlet 8, the air illustrating in burner hearth 4 when the concentration of oxygen reaches 98% has been excluded and has been high purity oxygen gas atmosphere in burner hearth 4; Then gas switching valves 7 closes gas outlet 8, opens the heater switch of heating system 2, heat-treats by setup program agglomerating chamber 3 sample.The oxycarbide of the high temperature produced in nickelic lithium ion anode material sintering process is followed together with oxygen with steam and is discharged, circulating water device is specially through apparatus for supercooling 6, temperature is made to be down to less than 100 DEG C, steam in mist is liquefied, reaches the effect of the steam in preliminary removing mist; Then mist is when filter 9, filter 9 adopts the mode of chemisorbed and physical absorption to remove oxycarbide in mist and steam, make the high purity oxygen gas of purity >=98% only remaining pure after filter 9, high purity oxygen gas passes in burner hearth 4 after entering holding vessel 10 and recycles.
Claims (10)
1. a nickelic anode material for lithium-ion batteries sintering equipment, is characterized in that, the air exhauster comprise burner hearth, being connected with burner hearth, and air inlet is arranged on burner hearth, and heating system and agglomerating chamber are arranged in burner hearth.
2. sintering equipment according to claim 1, is characterized in that, described heating system is 1 or 2.
3. sintering equipment according to claim 1, is characterized in that, described heating system is heating rod.
4. sintering equipment according to claim 1, is characterized in that, described air inlet is arranged on the side of heating system in burner hearth.
5. sintering equipment according to claim 1, is characterized in that, described sintering equipment also comprises gas-circulating system.
6. sintering equipment according to claim 5, it is characterized in that, the filter that described gas-circulating system comprises gas switching valves, is connected with gas switching valves, the other end of described gas switching valves is connected with air exhauster, and the other end of described filter is connected with air inlet.
7. sintering equipment according to claim 6, is characterized in that, described gas switching valves is threeway, the connection gas outlet, one end of gas switching valves.
8. sintering equipment according to claim 6, is characterized in that, described gas-circulating system also comprises cooling device, and one end of cooling device is connected with air exhauster, and the other end of cooling device is connected with gas switching valves.
9. the sintering equipment according to claim 6 or 8, is characterized in that, described gas-circulating system also comprises holding vessel, and one end of holding vessel is connected with filter, and the other end of holding vessel is connected with air inlet.
10. sintering equipment according to claim 8, is characterized in that, described cooling device is circulating water device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420468603.XU CN204085150U (en) | 2014-08-20 | 2014-08-20 | A kind of nickelic anode material for lithium-ion batteries sintering equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420468603.XU CN204085150U (en) | 2014-08-20 | 2014-08-20 | A kind of nickelic anode material for lithium-ion batteries sintering equipment |
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| Publication Number | Publication Date |
|---|---|
| CN204085150U true CN204085150U (en) | 2015-01-07 |
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ID=52177853
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|---|---|---|---|
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018152805A1 (en) * | 2017-02-25 | 2018-08-30 | 深圳市玖创科技有限公司 | Sintering device for battery positive electrode materials |
| CN114251942A (en) * | 2021-11-30 | 2022-03-29 | 广东邦普循环科技有限公司 | Production line and production method for lithium ion battery anode material |
| CN114524471A (en) * | 2022-04-22 | 2022-05-24 | 宜宾锂宝新材料有限公司 | Low-residual-alkali high-nickel ternary cathode material, and preparation method and application thereof |
| CN114251942B (en) * | 2021-11-30 | 2024-05-10 | 广东邦普循环科技有限公司 | Production line and production method of lithium ion battery anode material |
-
2014
- 2014-08-20 CN CN201420468603.XU patent/CN204085150U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018152805A1 (en) * | 2017-02-25 | 2018-08-30 | 深圳市玖创科技有限公司 | Sintering device for battery positive electrode materials |
| CN114251942A (en) * | 2021-11-30 | 2022-03-29 | 广东邦普循环科技有限公司 | Production line and production method for lithium ion battery anode material |
| CN114251942B (en) * | 2021-11-30 | 2024-05-10 | 广东邦普循环科技有限公司 | Production line and production method of lithium ion battery anode material |
| CN114524471A (en) * | 2022-04-22 | 2022-05-24 | 宜宾锂宝新材料有限公司 | Low-residual-alkali high-nickel ternary cathode material, and preparation method and application thereof |
| CN114524471B (en) * | 2022-04-22 | 2022-07-08 | 宜宾锂宝新材料有限公司 | Low-residual-alkali high-nickel ternary cathode material, and preparation method and application thereof |
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Legal Events
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518106 Gongming City, Guangdong province Guangming New District Office of the West community high and New Technology Industrial Park, building eighth, Patentee after: Beitrei New Materials Group Co., Ltd Address before: 518106 Gongming City, Guangdong province Guangming New District Office of the West community high and New Technology Industrial Park, building eighth, Patentee before: Shenzhen BTR New Energy Material Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |