CN107056268A - Automobile charging pile high-power manganese-zinc ferrite core and preparation method thereof - Google Patents

Automobile charging pile high-power manganese-zinc ferrite core and preparation method thereof Download PDF

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CN107056268A
CN107056268A CN201710293735.1A CN201710293735A CN107056268A CN 107056268 A CN107056268 A CN 107056268A CN 201710293735 A CN201710293735 A CN 201710293735A CN 107056268 A CN107056268 A CN 107056268A
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principal component
oxide
charging pile
temperature
automobile charging
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柯宇翔
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GUANDA MAGNETIC IND CO Ltd SUZHOU
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GUANDA MAGNETIC IND CO Ltd SUZHOU
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    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C04B35/2608—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead
    • C04B35/2633—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead containing barium, strontium or calcium
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Abstract

The invention discloses a kind of high-power manganese-zinc ferrite core of automobile charging pile, including principal component and accessory ingredient；Principal component Fe2O3, MnO and ZnO；Accessory ingredient includes calcium oxide, nickel oxide, bismuth oxide and molybdenum oxide, and the total amount of accessory ingredient is 0.20 ~ 0.90wt% relative to the weight percent content of principal component total amount.Its preparation methods steps are as follows：Weighing；Doping；Suppress blank；Arrange base；Sintering processes.The present invention passes through special doping process and sintering process curve, the magnetic conductivity of its material is set all to possess higher magnetic conductivity under negative temperature and hot conditions, Curie temperature is high, and with good temperature characteristic, temperature curve is flat, high temperature is low in energy consumption, working environment adaptability is strong, provided the user using field it is more extensive, volume is smaller, more efficient, the low power-supply device of loss, wide market.

Description

Automobile charging pile high-power manganese-zinc ferrite core and preparation method thereof
Technical field
The present invention relates to manganese-zinc ferrite field, more particularly to a kind of automobile charging pile is with high-power manganese-zinc ferrite magnetic Core and preparation method thereof.
Background technology
With the high speed development of cross-cutting electronic device industry, the industry development of electric automobile industry charging pile is rapid, and its The technology of middle most critical is the soft magnetic ferrite and product of nesting.Soft magnetic ferrite due to the advantage in terms of its cost, More and more it is used to replace traditional permanent magnetism, while its good registration property can also help to realize that component is preferably special Property.Power-type MnZn ferrite material is low in energy consumption, and frequency characteristic is good, and Applicable temperature scope is wide, is conducive to designing large-scale charging electricity Source, anti-interference degree is high, and the stability under different temperatures working environment is good, meets the development trend of electronic component.
Magnetic material occupies partial volume and consumed in wave filter, Switching Power Supply and transformer application electronic product The part energy.Therefore magnetic core initial permeability and frequency characteristic are improved, makes high-power product to ting model, efficient development, it is right China's electronic industry structural adjustment, energy-saving and emission-reduction provide effective help.
The content of the invention
The present invention solves the technical problem of provide a kind of automobile charging pile with high-power manganese-zinc ferrite core and Its preparation method.
In order to solve the above technical problems, one aspect of the present invention is：A kind of automobile charging pile is provided with greatly Power manganese-zinc ferrite core, including：Principal component and accessory ingredient；The principal component includes the Mole percent in terms of respective reference material Than the Fe that content is 50~54mol%2O3, 39~42mol% MnO and 5~9mol% ZnO；The accessory ingredient is aoxidized including calcium Thing, nickel oxide, bismuth oxide and molybdenum oxide, relatively described principal component total amount, titanium oxide, nickel oxide, bismuth oxide With molybdenum oxide with its reference material CaCO3、NiO、Bi2O3And MoO3The total weight percent content of meter is 0.20 ~ 0.90wt%.
In a preferred embodiment of the present invention, weight percent content difference of the accessory ingredient in terms of respective reference material For：CaCO3250~1200ppm, 200~5000ppm of NiO, Bi2O3 100~1000ppm, MoO380~600ppm.
In order to solve the above technical problems, another technical solution used in the present invention is：A kind of automobile charging pile is provided to use The preparation method of high-power manganese-zinc ferrite core, comprises the following steps：
（1）Weighing：The principal component and auxiliary element are weighed by formula；
（2）Doping：By step（1）In the auxiliary element that weighs successively be added in the principal component weighed points more than for 3 times, add every time Enter after auxiliary element, the auxiliary element of addition is first carried out with principal component to mix pre-burning, then be ground processing, finally will be all Auxiliary element and principal component mixed grinding obtain the blending ingredients that average grain diameter is 0.1~0.3 μm；
（3）Suppress blank：To step（2）In successively add deionized water and dispersant in obtained compound, stir into homogeneous Slurry, then the slurry is pressed into magnetic core blank with particular manufacturing craft；
（4）Arrange base：By step（3）In obtained blank carry out individual layer row's base processing by certain space spacing on sintering frame, And spread one layer of emergy in the bottom of magnetic core blank；
（5）Sintering processes：By step（4）The middle magnetic core blank after arranging base is inserted in sintering kiln, is sintered under balanced atmosphere Shaping.
In a preferred embodiment of the present invention, the step（2）In, the condition of the mixing pre-burning is：Temperature 600~ 800 DEG C, 5~15min of time；The mixed grinding is carried out in planetary ball mill, and each milling time is 5~15min.
In a preferred embodiment of the present invention, the step（4）In, the space spacing of the magnetic core blank for 1~ 1.5cm。
In a preferred embodiment of the present invention, the step（5）In, the process conditions of the sintering are：In 5~8% nitrogen Under the equilibrium air pressure of Gas content, first rise to 1000 DEG C from room temperature with 30~50 DEG C/min heating rate, then again with 100 DEG C/ Min heating rate is warming up to 1400 DEG C, and constant temperature keeps 6h, then again with 30~50 DEG C/min rate of temperature fall near 1100 DEG C, constant temperature keeps 1~2h, finally naturally cools to room temperature with stove.
The beneficial effects of the invention are as follows：The present invention makes its material by special doping process and sintering process curve Magnetic conductivity all possesses higher magnetic conductivity under negative temperature and hot conditions, and Curie temperature is high, and with good temperature characteristic, Temperature curve is flat, high temperature is low in energy consumption, and working environment adaptability is strong, has provided the user more extensive using field, and volume is smaller, It is more efficient, low power-supply device, wide market is lost.
Embodiment
Presently preferred embodiments of the present invention is described in detail below so that advantages and features of the invention can be easier to by It will be appreciated by those skilled in the art that apparent clearly being defined so as to be made to protection scope of the present invention.
The embodiment of the present invention includes：
Embodiment 1
A kind of high-power manganese-zinc ferrite core of automobile charging pile, including：Principal component and accessory ingredient；The principal component includes oxygen Change iron, manganese oxide and zinc oxide, the mole percent level of iron oxide, manganese oxide and zinc oxide in terms of respective reference material is Fe2O3 50mol%、MnO 42mol%、ZnO 8mol%；The accessory ingredient includes calcium oxide, nickel oxide, bismuth oxide and molybdenum Oxide, relatively described principal component total amount, titanium oxide, nickel oxide, bismuth oxide and molybdenum oxide are with its reference material CaCO3、NiO、Bi2O3And MoO3The total weight percent content of meter is 0.20wt%, and specifically, accessory ingredient is in terms of respective reference material Weight percent content be respectively：CaCO3 250ppm、NiO 200 ppm、Bi2O3 100 ppm, MoO3 80 ppm。
The above-mentioned automobile charging pile preparation method of high-power manganese-zinc ferrite core, comprises the following steps：
（1）Weighing：The principal component and auxiliary element are weighed by formula；
（2）Doping：The above-mentioned auxiliary element weighed is successively divided more than 3 times and is added in the principal component weighed, is added every time auxiliary After co-ingredients, the auxiliary element of addition is first mixed into pre-burning 15min with principal component at 600 DEG C, then ground in planetary ball mill Mill 5~15min of processing, it is 0.1~0.3 μm that whole auxiliary elements and principal component mixed grinding finally are obtained into average grain diameter Blending ingredients；
（3）Suppress blank：To step（2）In successively add deionized water and dispersant in obtained compound, stir into homogeneous Slurry, then the slurry is pressed into magnetic core blank with particular manufacturing craft；
（4）Arrange base：By step（3）In obtained blank on sintering frame by 1cm space spacing（That is all around spacing）Enter The row's base processing of row individual layer, and spread one layer of emergy, the multidirectional notch of pad envisaged underneath in bottom；Between space between magnetic core It is easy to thermal current to circulate away from design, so that heating degree of the whole magnetic core in sintering kiln is uniform, can effectively ensure that magnetic core Overall performance stable homogeneous；
（5）Sintering processes：By step（4）It is middle through arrange base after magnetic core blank insert in sintering kiln, take into full account energy-conservation and Dumping, sinter uniformity and take into account principal component and auxiliary element characteristic on the basis of, set atmosphere curve by Bu Laike equations, And be sintered using following sintering process：Under the equilibrium air pressure of 5% nitrogen content, first with 50 DEG C/min heating rate from Room temperature rises to 1000 DEG C, is then warming up to 1400 DEG C again with 100 DEG C/min heating rate, constant temperature keeps 6h, then again with 50 DEG C/min near 1100 DEG C of rate of temperature fall, constant temperature keeps 1~2h, finally naturally cools to room temperature with stove；By extending high temperature Under the conditions of the sintered heat insulating time, reach reduction magnetic core high temperature power consumption levels, improve TC, reduce product temperature coefficient, make temperature Line of writing music tends to flat purpose.In addition, by suitably reducing sintering temperature, ensureing high temperature power consumption levels, improving TC and drop Intergranular activity is reduced on the premise of low product temperature coefficient, on the one hand for reducing magnetic core microscopic gaps, increases saturation Magnetic flux density, on the other hand also improves the product strength after sintering indirectly.
Embodiment 2
A kind of high-power manganese-zinc ferrite core of automobile charging pile, including：Principal component and accessory ingredient；The principal component includes oxygen Change iron, manganese oxide and zinc oxide, the mole percent level of iron oxide, manganese oxide and zinc oxide in terms of respective reference material is Fe2O3 54mol%、MnO 39mol%、ZnO 7mol%；The accessory ingredient includes calcium oxide, nickel oxide, bismuth oxide and molybdenum Oxide, relatively described principal component total amount, titanium oxide, nickel oxide, bismuth oxide and molybdenum oxide are with its reference material CaCO3、NiO、Bi2O3And MoO3The total weight percent content of meter is 0.90wt%, and specifically, accessory ingredient is in terms of respective reference material Weight percent content be respectively：CaCO3 1200ppm、NiO 5000ppm、Bi2O3 1000ppm, MoO3 600ppm。
The above-mentioned automobile charging pile preparation method of high-power manganese-zinc ferrite core, comprises the following steps：
（1）Weighing：The principal component and auxiliary element are weighed by formula；
（2）Doping：The above-mentioned auxiliary element weighed is successively divided more than 3 times and is added in the principal component weighed, is added every time auxiliary After co-ingredients, the auxiliary element of addition and principal component are first mixed into pre-burning 5min at 800 DEG C, then ground in planetary ball mill 5~15min is handled, it is mixed for 0.1~0.3 μm that whole auxiliary elements and principal component mixed grinding finally are obtained into average grain diameter Charge-coupled point；
（3）Suppress blank：To step（2）In successively add deionized water and dispersant in obtained compound, stir into homogeneous Slurry, then the slurry is pressed into magnetic core blank with particular manufacturing craft；
（4）Arrange base：By step（3）In obtained blank on sintering frame by 1.5cm space spacing（That is all around spacing） Individual layer row's base processing is carried out, and one layer of emergy, the multidirectional notch of pad envisaged underneath are spread in bottom；Space between magnetic core Line space design is easy to thermal current to circulate, so that heating degree of the whole magnetic core in sintering kiln is uniform, can effectively ensure that magnetic The overall performance stable homogeneous of core；
（5）Sintering processes：By step（4）It is middle through arrange base after magnetic core blank insert in sintering kiln, take into full account energy-conservation and Dumping, sinter uniformity and take into account principal component and auxiliary element characteristic on the basis of, set atmosphere curve by Bu Laike equations, And be sintered using following sintering process：Under the equilibrium air pressure of 8% nitrogen content, first with 30 DEG C/min heating rate from Room temperature rises to 1000 DEG C, is then warming up to 1400 DEG C again with 100 DEG C/min heating rate, constant temperature keeps 6h, then again with 30 DEG C/min near 1100 DEG C of rate of temperature fall, constant temperature keeps 1~2h, finally naturally cools to room temperature with stove；Wherein, longer guarantor The warm time helps to reach the high temperature power consumption levels of reduction magnetic core, improves TC, reduces product temperature coefficient, temperature curve is become In flat purpose.In addition, by suitably reducing sintering temperature, ensureing high temperature power consumption levels, improving TC and reduction product temperature Intergranular activity is reduced on the premise of degree coefficient, on the one hand for reducing magnetic core microscopic gaps, increases saturation flux density, On the other hand the product strength after sintering is also improved indirectly.
The high-power manganese-zinc ferrite core of the automobile charging pile that the above method is obtained, is that a kind of automobile charging pile that adapts to is used Powerful low-loss ferrite material product, magnetic core is not easy to crack and deforms, and Curie temperature is high, and special with good temperature rise Property, temperature curve is flat, high temperature is low in energy consumption, and working environment adaptability is strong.After tested, specific performance feature is as follows：
1）Performance aspect, 1.0KHz, 0.3V, under the conditions of 25 ± 3 DEG C, initial permeability μ i=3300 ± 25%；
2）With good temperature characterisitic, temperature curve is flat, and it is -30~200 DEG C to be adapted to operating temperature；
3）Curie temperature is high, Tc >=230 DEG C；
4）High temperature is low in energy consumption, and the power consumption that 70~100 DEG C of 100KHz 200mT is less than 350kw/m3。
The present invention manganese-zinc ferrite core provide the user using field it is more extensive, volume is smaller, more efficient, be lost it is low Power-supply device, and can be applied to other charging equipment facilities, such as wireless telecommunications, intelligent electric meter terminal, industry it is integrated The particular surroundings such as equipment, submarine cable, optical cable underwater installation.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair Equivalent structure or equivalent flow conversion that bright description is made, or directly or indirectly it is used in other related technology necks Domain, is included within the scope of the present invention.

Claims (6)

1. a kind of high-power manganese-zinc ferrite core of automobile charging pile, it is characterised in that including：Principal component and accessory ingredient；Institute Stating principal component includes the Fe of the mole percent level counted using respective reference material as 50~54mol%2O3, 39~42mol% MnO With 5~9mol% ZnO；The accessory ingredient includes calcium oxide, nickel oxide, bismuth oxide and molybdenum oxide, relatively described master Composition total amount, titanium oxide, nickel oxide, bismuth oxide and molybdenum oxide are with its reference material CaCO3、NiO、Bi2O3And MoO3Meter Total weight percent content be 0.20 ~ 0.90wt%.
2. the high-power manganese-zinc ferrite core of automobile charging pile according to claim 1, it is characterised in that it is described it is secondary into Weight percent content point in terms of respective reference material is respectively：CaCO3250~1200ppm, 200~5000ppm of NiO, Bi2O3 100~1000ppm, MoO380~600ppm.
3. a kind of preparation method of the high-power manganese-zinc ferrite core of automobile charging pile as claimed in claim 1 or 2, it is special Levy and be, comprise the following steps：
（1）Weighing：The principal component and auxiliary element are weighed by formula；
（2）Doping：By step（1）In the auxiliary element that weighs successively be added in the principal component weighed points more than for 3 times, add every time Enter after auxiliary element, the auxiliary element of addition is first carried out with principal component to mix pre-burning, then be ground processing, finally will be all Auxiliary element and principal component mixed grinding obtain the blending ingredients that average grain diameter is 0.1~0.3 μm；
（3）Suppress blank：To step（2）In successively add deionized water and dispersant in obtained compound, stir into homogeneous Slurry, then the slurry is pressed into magnetic core blank with particular manufacturing craft；
（4）Arrange base：By step（3）In obtained blank carry out individual layer row's base processing by certain space spacing on sintering frame, And spread one layer of emergy in the bottom of magnetic core blank；
（5）Sintering processes：By step（4）The middle magnetic core blank after arranging base is inserted in sintering kiln, is sintered under balanced atmosphere Shaping.
4. the automobile charging pile according to claim 3 preparation method of high-power manganese-zinc ferrite core, its feature exists In the step（2）In, the condition of the mixing pre-burning is：600~800 DEG C of temperature, 5~15min of time；The mixing is ground Mill is carried out in planetary ball mill, and each milling time is 5~15min.
5. the automobile charging pile according to claim 3 preparation method of high-power manganese-zinc ferrite core, its feature exists In the step（4）In, the space spacing of the magnetic core blank is 1~1.5cm.
6. the automobile charging pile according to claim 3 preparation method of high-power manganese-zinc ferrite core, its feature exists In the step（5）In, the process conditions of the sintering are：Under the equilibrium air pressure of 5~8% nitrogen content, first with 30~50 DEG C/min heating rate rises to 1000 DEG C from room temperature, is then warming up to 1400 DEG C, constant temperature again with 100 DEG C/min heating rate 6h is kept, then again near 1100 DEG C of 30~50 DEG C/min rate of temperature fall, constant temperature keeps 1~2h, finally naturally cold with stove But to room temperature.
CN201710293735.1A 2017-04-28 2017-04-28 Automobile charging pile high-power manganese-zinc ferrite core and preparation method thereof Pending CN107056268A (en)

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