CN101673971A - Magnetic capacitor array and power supply system and control method using the same - Google Patents
Magnetic capacitor array and power supply system and control method using the same Download PDFInfo
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- CN101673971A CN101673971A CN200810214394A CN200810214394A CN101673971A CN 101673971 A CN101673971 A CN 101673971A CN 200810214394 A CN200810214394 A CN 200810214394A CN 200810214394 A CN200810214394 A CN 200810214394A CN 101673971 A CN101673971 A CN 101673971A
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Abstract
The invention relates to a power supply system comprising a magnetic capacitor array, at least one voltage sensor and a control module, wherein the magnetic capacitor array comprises a plurality of magnetic capacitors for storing electric energy and outputting DC power, a plurality of first switches and a plurality of second switches. Each magnetic capacitor is provided with a first end and a second end and is arranged in the mode of an M*N matrix, whereas one first switch is connected between the first end and the second end of each magnetic capacitor, and in each row of the matrix, one second switch is connected between the first ends or the second ends of two adjacent magnetic capacitors. The voltage sensor is coupled to the magnetic capacitor array and is used for sensing voltage values output by the magnetic capacitor array. The control module is coupled to the voltage sensor and the magnetic capacitor array and controls the first switches and the second switches to be opened or closed by the voltage values so as to connect the magnetic capacitors in series/in parallel.
Description
Technical field
The invention relates to a kind of electric power system, be meant a kind of electric power system that can improve the rate that is used of energy-storage travelling wave tube especially.
Background technology
Energy-storage travelling wave tube extensively applies to products such as home appliance, handheld apparatus (for example: mobile phone (Mobile Phone), PDA etc.) and the vehicles now, to satisfy the demand of people to the separate energy source system.Mostly utilize battery, electric capacity or super capacitor (Super capacitor) element on using now as store energy.
Though electric capacity is comparatively simple on processing procedure,, can only use as of short duration energy storage because of its storage volume is little.And conventional batteries, mainly be to utilize the mode of chemical energy to carry out store energy, therefore its store energy density obviously is better than general electric capacity, and can be applicable to various electric power supply apparatus, but shortcoming is: the moment electric power output that it can produce can be subject to chemical reaction rate, and can't discharge and recharge or carry out high power output fast, and it is limited to discharge and recharge number of times, easily grows variety of issue when excessively charging and discharging; For example: present employed storage battery though bragging about reusablely, but has the restriction in its life-span.repeatedly discharge and recharge or long-time obsolete situation under, the capacity of storage battery can descend, and damage easily, reason is that storage battery is to utilize chemical energy to be converted to electric energy, chemical substance will often be protected its activity, and it is rotten just to be unlikely to lose efficacy, when original compound activity all uses up or nearly use up, just can't carry out new chemical reaction again, and then cause storage battery aging and declaration is died of old age.
Super capacitor is a kind of element between between battery and electric capacity, claim electric double layer capacitance (ElectricalDouble-Layer Capacitor) again, because of passing through the energy storage of part physics, the chemical energy storage framework of part simultaneously, so it has the capacity bigger than common electric capacity, but its shortcoming is: because of chemical material tool chemical characteristic is arranged, and easy electric leakage shortcoming just like battery, add again because of partly being the fast phenomenon of the velocity of discharge of physical characteristic in addition, just produce the phenomenon that not to have electricity thus, can't reach effective storage function.Even the pressure withstanding degree of super capacitor is not high, and internal resistance is bigger, thereby cannot be used for alternating current circuit, and if the improper use meeting cause phenomenons such as electrolyte leakage.
The technology of existing energy-storage travelling wave tube all can't reach the advantages such as output, fast charging and discharging of long (high charge-discharge number of times), high-energy storage density of life-span, transient high power simultaneously.In addition, electric power system now is to use above-mentioned these energy-storage travelling wave tubes to be used as main power supply source, carry out voltage stabilizing output through a DC-DC converter again, but, when the electric power of energy-storage travelling wave tube is lower than the operating voltage range of DC-DC converter, electric power system is the required electric power of supplies electrons device again, that is to say in these energy-storage travelling wave tubes remaining electric power can't be used, not only cause waste of power resources, and the energy-storage travelling wave tube in the electric power system can not be used effectively, so existing energy-storage travelling wave tube and electric power system still have many improvement parts.
Because the defective that above-mentioned existing electric power system exists, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of founding a kind of new magnetic capacitor and using the electric power system and the control method of this array, can improve general existing electric power system, make it have more practicality.Through constantly research, design, and after studying repeatedly and improving, create the present invention who has practical value finally.
Summary of the invention
Main purpose of the present invention is, overcomes the defective that existing electric power system exists, and a kind of new magnetic capacitor is provided, and technical problem to be solved is to make it significantly promote store energy density, thereby is suitable for practicality more.
Another object of the present invention is to, a kind of electric power system with magnetic capacitor is provided.
Another object of the present invention is to, a kind of control method of magnetic capacitor is provided.
The object of the invention to solve the technical problems realizes by the following technical solutions.A kind of magnetic capacitor according to the present invention's proposition, an exportable direct current electric power, this magnetic capacitor comprises: a plurality of magnetic capacitances, store electrical energy is also exported this direct current power, and respectively this magnetic capacitance has one first end and one second end, and described magnetic capacitance is with one M * N arranged, wherein, M, N be integer and both one of them for greater than one integer, and in the same delegation of this matrix, described magnetic capacitance is connected mutually; And a plurality of first switches, connect one first switch between first end of each magnetic capacitance and second end; And a plurality of second switches, in each row of this matrix, first end of two adjacent magnetic capacitances and second end wherein connect a second switch respectively between one; On/Off by described first switch and second switch makes described magnetic capacitance series/parallel.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid magnetic capacitor, wherein said magnetic capacitor also comprises a plurality of the 3rd switches, each magnetic capacitance and first switch room that is connected with this magnetic capacitance connect one the 3rd switch, and the 3rd switch and this magnetic capacitance first switch in parallel of connecting and being connected with this magnetic capacitance.
Aforesaid magnetic capacitor, wherein said magnetic capacitance also has one first magnetic pole, one second magnetic pole and a therebetween dielectric layer, wherein this first magnetic pole and second magnetic pole are that electric conducting material by tool magnetic constitutes, and the magnetic coupling extreme direction of this first magnetic pole is identical, and the magnetic coupling extreme direction of this second magnetic pole is identical.
Aforesaid magnetic capacitor, in wherein said first magnetic pole and this second magnetic pole at least one has one first magnetosphere, one second magnetosphere and is folded between this first magnetosphere and this second magnetosphere and the separator of non magnetic material, and this first magnetospheric magnetic coupling extreme direction is in contrast to this second magnetospheric magnetic coupling extreme direction.
The object of the invention to solve the technical problems also realizes by the following technical solutions.A kind of electric power system according to the present invention's proposition, this electric power system comprises: a magnetic capacitor, it comprises: a plurality of magnetic capacitances, be store electrical energy and export a direct current electric power, respectively this magnetic capacitance has one first end and one second end, and described magnetic capacitance is with one M * N arranged, wherein, M, N be integer and both one of them for greater than one integer, and in the same delegation of this matrix, described magnetic capacitance is connected mutually, and a plurality of first switches, connect one first switch, a plurality of second switches between first end of each magnetic capacitance and second end, in each row of this matrix, first end of two adjacent magnetic capacitances and second end wherein connect a second switch between one; At least one voltage-sensor is coupled to this magnetic capacitor, is used to detect the magnitude of voltage of this magnetic capacitor output; And a control die set, being coupled to this voltage-sensor and this magnetic capacitor, this control die set controls described first switch according to this magnitude of voltage and described second switch is opened or closed, and makes described magnetic capacitance series/parallel.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid electric power system, wherein said magnetic capacitor also comprises a plurality of the 3rd switches of being controlled by this control die set, each magnetic capacitance and first switch room that is connected with this magnetic capacitance connect one the 3rd switch, and the 3rd switch and this magnetic capacitance first switch in parallel of connecting and being connected with this magnetic capacitance.
Aforesaid electric power system, the quantity of wherein said at least one voltage-sensor are one.
Aforesaid electric power system, the quantity of wherein said at least one voltage-sensor equals the quantity of described magnetic capacitance, and the voltage of corresponding respectively each magnetic capacitance of detecting of each voltage-sensor.
Aforesaid electric power system, wherein said control die set comprises a Power Management Unit and a switch control unit, and this Power Management Unit receives the magnitude of voltage of this at least one voltage-sensor and orders about this switch control unit and control described first, second and third switch open/close.
Aforesaid electric power system, wherein said control die set comprise and comprise that also one is coupled to the DC-DC converter of this magnetic capacitor, exports after the direct current power voltage stabilizing of exporting in order to this magnetic capacitor.
Aforesaid electric power system, wherein said magnetic capacitance also has one first magnetic pole, one second magnetic pole and a therebetween dielectric layer, wherein this first magnetic pole and second magnetic pole are that electric conducting material by tool magnetic constitutes, and the magnetic coupling extreme direction of this first magnetic pole is identical, and the magnetic coupling extreme direction of this second magnetic pole is identical.
In first magnetic pole and this second magnetic pole at least one has one first magnetosphere, one second magnetosphere and is folded between this first magnetosphere and this second magnetosphere and the separator of non magnetic material, and this first magnetospheric magnetic coupling extreme direction is in contrast to this second magnetospheric magnetic coupling extreme direction.
The object of the invention to solve the technical problems also realizes in addition by the following technical solutions.The control method of a kind of magnetic capacitor that proposes according to the present invention, this magnetic capacitor store electrical energy is also exported a direct current electric power, this magnetic capacitor has the magnetic capacitance of a plurality of M of being * N arranged, M, N be integer and both one of them for greater than one integer, this control method comprises following steps: the magnitude of voltage of (a) detecting this magnetic capacitor; (b) when magnitude of voltage during greater than a critical value, at least a portion magnetic capacitance magnitude of voltage parallel with one another and its output DC power of controlling in this magnetic capacitor is higher than this critical value; And, control in this magnetic capacitor that at least a portion changes to series connection in the magnetic capacitance in parallel when magnitude of voltage during less than a critical value, the magnitude of voltage of its output DC power is incremented to is not less than this critical value.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
The control method of aforesaid magnetic capacitor, it also comprises a DC-DC converter that is coupled to this magnetic capacitor, export after the direct current power voltage stabilizing of exporting in order to this magnetic capacitor, and this critical value is the minimum critical voltage value of the opereating specification of this DC-DC converter.
The present invention compared with prior art has tangible advantage and beneficial effect.As known from the above, in order to achieve the above object, the invention provides a kind of magnetic capacitor, comprise: the magnetic capacitance of a plurality of store electrical energy and output DC power, a plurality of first switch and a plurality of second switch.Respectively this magnetic capacitance has one first end and one second end, and with one M * N arranged, wherein, M, N be integer and both one of them for greater than one integer, and in the same delegation of this matrix, described magnetic capacitance is connected mutually.In addition, connect one first switch between first end of each magnetic capacitance and second end, and in each row of matrix, first end of two adjacent magnetic capacitances and second end wherein connect a second switch between one.
In addition, magnetic capacitor also comprises a plurality of the 3rd switches, and each magnetic capacitance and first switch room that is connected with magnetic capacitance connect one the 3rd switch, and the 3rd switch and magnetic capacitance first switch in parallel of connecting and being connected with magnetic capacitance.
Magnetic capacitance also has one first magnetic pole, one second magnetic pole and one of therebetween dielectric layer, wherein first magnetic pole and second magnetic pole are that electric conducting material by tool magnetic constitutes, and the magnetic coupling extreme direction of first magnetic pole is identical, and the magnetic coupling extreme direction of second magnetic pole is identical, but second magnetic pole can be opposite with the magnetic coupling extreme direction of first magnetic pole.Moreover, in first magnetic pole and second magnetic pole at least one has one first magnetosphere, one second magnetosphere and is folded between first magnetosphere and second magnetosphere and the separator of non magnetic material, and this first magnetospheric magnetic coupling extreme direction is in contrast to this second magnetospheric magnetic coupling extreme direction.
Electric power system of the present invention comprises a magnetic capacitor, at least one voltage-sensor and a control die set.Wherein, magnetic capacitor then comprises the magnetic capacitance of a plurality of store electrical energy and output DC power, a plurality of first switch and a plurality of second switch, respectively this magnetic capacitance has one first end and one second end, and with one M * N arranged, wherein, M, N be integer and both one of them for greater than one integer, and in the same delegation of this matrix, described magnetic capacitance is connected mutually.In addition, connect one first switch between first end of each magnetic capacitance and second end, and in each row of matrix, first end of two adjacent magnetic capacitances and second end wherein connect a second switch between one.
Moreover voltage-sensor is to be coupled to magnetic capacitor, and is used to detect the magnitude of voltage of magnetic capacitor output.Control die set then is to be coupled to voltage-sensor and magnetic capacitor, and controls first switch and second switch is opened or closed according to magnitude of voltage, makes the magnetic capacitance series/parallel.
In addition, electric power system of the present invention also comprises a DC-DC converter that is coupled to this magnetic capacitor, exports after the direct current power voltage stabilizing of exporting in order to this magnetic capacitor.Therefore, utilize the series/parallel combination of magnetic capacitance in the control die set control magnetic capacitor, reaching voltage that magnetic capacitor exports can be greater than the minimum critical voltage value of the opereating specification of DC-DC converter.
Preferably, magnetic capacitor also comprises a plurality of the 3rd switches of being controlled by control die set, each magnetic capacitance and first switch room that is connected with this magnetic capacitance connect one the 3rd switch, and the 3rd switch and this magnetic capacitance first switch in parallel of connecting and being connected with this magnetic capacitance.
Preferably, control die set of the present invention comprises a Power Management Unit and a switch control unit.Power Management Unit receives the magnitude of voltage of voltage-sensor and orders about switch control unit and control described first, second and third switch open/close.
Magnetic capacitance also has one first magnetic pole, one second magnetic pole and one of therebetween dielectric layer, wherein first magnetic pole and second magnetic pole are that electric conducting material by tool magnetic constitutes, and the magnetic coupling extreme direction of first magnetic pole is identical, and the magnetic coupling extreme direction of second magnetic pole is identical, but second magnetic pole can be opposite with the magnetic coupling extreme direction of first magnetic pole.Moreover, in first magnetic pole and second magnetic pole at least one has one first magnetosphere, one second magnetosphere and is folded between first magnetosphere and second magnetosphere and the separator of non magnetic material, and this first magnetospheric magnetic coupling extreme direction is in contrast to this second magnetospheric magnetic coupling extreme direction.
The control method of magnetic capacitor of the present invention is to be applied to an electric power system, and magnetic capacitor is store electrical energy and exports a direct current electric power, and magnetic capacitance with a plurality of M of being * N arranged, M, N be integer and both one of them for greater than one integer, this control method comprises following steps:
(a) detect the magnitude of voltage of this magnetic capacitor;
(b) when magnitude of voltage during greater than a critical value, at least a portion magnetic capacitance magnitude of voltage parallel with one another and its output DC power of controlling in this magnetic capacitor is higher than this critical value; And when magnitude of voltage during less than a critical value, control in this magnetic capacitor that at least a portion changes to series connection in the magnetic capacitance in parallel, that is to say the addition each other of the electric power in these magnetic capacitances, the magnitude of voltage of its output DC power is incremented to is not less than this critical value.
Preferably, electric power system also comprises a DC-DC converter that is coupled to magnetic capacitor, and in order to exporting after the direct current power voltage stabilizing that allows magnetic capacitor export, and critical value is the minimum critical voltage value of the opereating specification of DC-DC converter.
By technique scheme, magnetic capacitor of the present invention and electric power system and the control method of using this array have the following advantages and remarkable result at least:
By stored electric power in the sufficient use magnetic capacitance, reduce waste of power resources, and also increased the service time of electric power system.
Description of drawings
Fig. 1 is a circuit box schematic diagram, and the preferred embodiment of electric power system of the present invention is described;
Fig. 2 is a circuit diagram, illustrates that magnetic capacitor is one 3 * 3 magnetic capacitor in the electric power system;
Fig. 3 is an equivalent circuit diagram, and the kenel a kind of in parallel of 3 * 3 magnetic capacitors is described;
Fig. 4 is an equivalent circuit diagram, and a kind of series connection kenel of 3 * 3 magnetic capacitors is described;
Fig. 5 is an equivalent circuit diagram, and the another kind series connection kenel of 3 * 3 magnetic capacitors is described;
Fig. 6 is an equivalent circuit diagram, and the kenel in parallel of single row in 3 * 3 magnetic capacitors is described;
Fig. 7 is an equivalent circuit diagram, and the series connection kenel of single row in 3 * 3 magnetic capacitors is described;
Fig. 8 is a comparison schematic diagram, and the comparison of magnetic capacitance of the present invention and other existing store energy media is described;
Fig. 9 is a structural representation, and the structure of magnetic capacitance of the present invention is described; And
Figure 10 is a structural representation, is illustrated as the alternative structure of first magnetic pole of magnetic capacitance of the present invention.
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, to its embodiment of electric power system, step, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.
See also shown in Figure 1, preferred embodiment for electric power system of the present invention, this electric power system 1 can be applicable to various electronic installations, notebook computer (notebook) for example, mobile phone or the like, mainly be the required electric power of these electronic installations of supply, and comprise a magnetic capacitor 2 and a DC-DC converter (DC-to-DC Converter) 3, wherein, magnetic capacitor 2 can store electrical energy and is exported a direct current power and give DC-DC converter 3, and DC-DC converter 3 is to this direct current masterpiece voltage stabilizing, makes electronic installation can access one for deciding the power supply of voltage.What deserves to be mentioned is that DC-DC converter 3 has an opereating specification, as long as in this scope of the direct current power that magnetic capacitor 2 is exported energy, DC-DC converter 3 can both produce this supply voltage of deciding voltage.
And can be connected one first switch 21 between first end 201 of each magnetic capacitance 20 and second end 202, so the quantity of first switch 21 of each row can be M, and the unlatching by first switch 21 or close magnetic capacitance 20 short circuit or the not short circuits of may command correspondence.And in each row of matrix, can connect a second switch 22 between first end 201 of the magnetic capacitance 20 that two left and right sides are adjacent, in order to the magnetic capacitance 20 of same row is made series/parallel each other, and owing to will connect a second switch 22 in twos between the magnetic capacitance 20, promptly the quantity of the second switch 22 of each row can be N-1.
The electric power system 1 of present embodiment also comprises a detecting voltage device 4 and a control die set 5, wherein, detecting voltage device 4 can be coupled to magnetic capacitor 2 and can remove to detect the magnitude of voltage that magnetic capacitor 2 is exported, and the magnitude of voltage that detects is sent to control die set 5.And control die set 5 can all first switches 21 of control with the unlatching (open/off) of second switch 22 or close (close/on), and include a Power Management Unit 51 (Power Management Unit, PMU) and a switch control unit 52.This Power Management Unit 51 can receive the voltage that detecting voltage device 4 is detected, and determine all first switches 21 to change magnetic capacitance 20 permutation and combination each other with the keying of second switch 22, and in case after the decision, Power Management Unit 51 can be ordered about the driving voltage that switch control unit 52 sends corresponding these selecteed first switches 21 and second switch 22.
Cooperate 3 * 3 magnetic capacitors as shown in Figure 2 to illustrate, wherein include nine magnetic capacitances 20, nine first switches (211～219) and six second switches (221～226), and each magnetic capacitance 20 all has a coordinate position to represent, for example the magnetic capacitance coordinate position of first row first row be (Row1, Col1).At the beginning, Power Management Unit 51 can be (Row3 with all first switch (211～219) unlatchings (open/off) and with coordinate position, Col1), (Row3, Col2) reach (Row3, second end, 202 ground connection of magnetic capacitance 20 Col3), so that the magnetic capacitance 20 of each row can be connected mutually and be made the electric power addition that wherein stores, Power Management Unit 51 can be with the second switch 221 of first row again, 222 close (close/on) and remaining second switch (223～226) are opened (open/off), make that three magnetic capacitances 20 in each row can be in parallel each other, its equivalent electric circuit is shown in Figure 3.Thus, increased the time constant that discharges and recharges of magnetic capacitor 2, made its velocity of discharge slack-off and have more stably that institute's output voltage is supplied to DC-DC converter 3.
In addition, consult Fig. 1, because when control die set 5 control first switch 21 cuts out, the corresponding magnetic capacitance 20 of expression can be by short circuit, and this magnetic capacitance 20 of anticipating promptly will can output power.Therefore, in order to ensure the direct current power that can not influenced its output by the magnetic capacitance 20 of short circuit, so the electric power system 1 of present embodiment also comprises a plurality of the 3rd switches of being controlled by control die set 5 23, be connected on respectively between each magnetic capacitance 20 and first switch 21, in present embodiment, the 3rd switch 23 is to be connected between second end 202 and first switch 21 of magnetic capacitance 20, can certainly be to be connected between first end 201 and first switch 21 of magnetic capacitance 20, so do not exceed with present embodiment.Moreover, with single magnetic capacitance 20, when control die set 5 controls first switch 21 cuts out, also the 3rd switch 23 can be opened, make an end of magnetic capacitance 20 can present suspension joint (floating) state, so that electric current can only flow through from first switch 21; On the contrary, when control die set 5 controls first switch 21 is opened, the 3rd switch 23 can cut out, make electric current to flow through from magnetic capacitance 20, also first switch 21 and the 3rd switch 23 can be opened simultaneously, thus, first switch 21 and the magnetic capacitance 20 neither electric currents that have flow through.
But, magnetic capacitor 2 stored electric power can slowly be decayed along with the service time of electronic installation, when detecting voltage device 4 detects electric power that magnetic capacitor 2 exported when being lower than the minimum critical voltage of opereating specification of DC-DC converter 3, DC-DC converter 3 is the required electric power of supplies electrons device again, so that last electric power can't be used in the magnetic capacitor 2.
Cooperate and consult Fig. 2, still illustrate wherein have nine the 3rd switches (231～239) with 3 * 3 magnetic capacitors.During minimum critical voltage Vth that the voltage of being exported when magnetic capacitor 2 is lower than that 3 of DC-DC converters can change, Power Management Unit 51 can be controlled first switch 214,215, second switch 221,226, the 3rd switch 231～233,237 and 238 close (close/on), and rest switch all opened (open/off), just with all the magnetic capacitance 20 whole short circuits in second row, the capable magnetic capacitance 20 of winning can be connected mutually with the first two magnetic capacitance 20 of the third line, its equivalent electric circuit as shown in Figure 4, that is to say that with coordinate position be (Row1, Col1), (Row2, Col1), (Row3, Col1), (Row1, Col3) reach (Row2, Col3) five magnetic capacitances 20 remaining electric power addition, the voltage that makes magnetic capacitor 2 be exported can be higher than the critical voltage of DC-DC converter 3 once again, so that DC-DC converter 3 can be had additional supply of the time of electronic installation required electric power, also utilize the electric power in the magnetic capacitance simultaneously fully.
Yet, series system between each row magnetic capacitance 20 does not have only above-mentioned mode, also can be as shown in Figure 5, change the charging direction of second all magnetic capacitances 20 of row Col2, make its with first the row and the third line in magnetic capacitance 20 polarity opposite, and control second switch 221, the 226 and the 3rd switch 231～235,237 and 238 close (close/on), and rest switch all opened (open/off), the positive pole of the first row magnetic capacitance 20 is connected in the negative pole of the second row magnetic capacitance 20, again the positive pole of the second row magnetic capacitance 20 is connected in the negative pole of the third line magnetic capacitance 20, so can reaches the series connection action of all magnetic capacitances 20.
Certainly, the magnetic capacitance 20 that Power Management Unit 51 also can only be controlled single row is done the conversion of series/parallel each other, for example first switch (218,219), second switch (221,222,224,226) and the 3rd switch (231,234,237) are closed (close/on), and remaining all switch is all opened (open/on), its equivalent electric circuit so can reach and only use the supply of electric power of the first row Row1 magnetic capacitance 20 to give DC-DC converter 3 as shown in Figure 6; In the same manner, Power Management Unit 51 is as long as close (close/on) with first switch (212,213), second switch (221,224) and the 3rd switch (231,234,237), and remaining all switch is all opened (open/on), the magnetic capacitance 20 of first row can be converted to series connection from parallel connection, its equivalent electric circuit as shown in Figure 7.Therefore, as long as utilize rising of first switch (211～219), second switch (221～226) and the 3rd switch (231～239) to close, can change the permutation and combination between the magnetic capacitance 20 in the magnetic capacitor 2, so do not exceed with present embodiment.
What deserves to be mentioned is, the mode of the detecting voltage device 4 detecting voltages of present embodiment can only be detected the total voltage of magnetic capacitor 2 as mentioned above, also can be to cooperate the keying of switch to detect the voltage of single (or single row/row) magnetic capacitance 20 respectively, can also be that quantity with detecting voltage device 4 is increased to identical with the quantity of magnetic capacitance 20, that is to say that each magnetic capacitance 20 all can a corresponding detecting voltage device 4 detects voltage wherein, so do not exceed with present embodiment.In addition, Power Management Unit 51 is to utilize a burning to control closing of all switches in algorithm wherein, that is to say that working as Power Management Unit 51 receives the voltage that detecting voltage device 4 is detected, can choose the action that suitable magnetic capacitance 20 is made series/parallel according to this algorithm, make electric power system 1 that maximum usefulness can be arranged.
Except above electric power system, another feature of the present invention is to use magnetic capacitance 20 as energy accumulating device and power source.It should be noted that compared to general electric capacity magnetic capacitance 20 can suppress leakage current, and significantly promote store energy density by the magnetic field that forms in upper and lower electrode place, so can be used as a splendid energy accumulating device or a supply of electric power source.
Please refer to Fig. 8, Fig. 8 is the magnetic capacitance of present embodiment and the comparison schematic diagram of other existing store energy media.As shown in Figure 8, because existing store energy media (for example conventional batteries or super capacitor) mainly is to utilize the mode of chemical energy to carry out store energy, therefore its store energy density will obviously be better than general electric capacity, and can be applicable to various electric power supply apparatus, the moment electric power output that it can produce also can be subject to chemical reaction rate, and can't discharge and recharge or carry out high power output fast but at the same time,, and it is limited to discharge and recharge number of times, easily grows variety of issue when excessively charging and discharging.
Compared to this, because energy stored all is that mode with electrical potential energy stores in the magnetic capacitance 20, therefore, except have can with the store energy density of general battery or super capacitor coupling, more because of fully possessing the characteristic of electric capacity, and have long (high charge-discharge number of times), memory-less effect of life-span, can carry out characteristics such as high power output, fast charging and discharging, so the variety of issue that can effectively solve current battery and run into.
Please refer to Fig. 9, Fig. 9 is the structural representation of magnetic capacitance 20 of the present invention.As shown in Figure 9, magnetic capacitance 20 includes one first magnetic pole 110, one second magnetic pole 120, and one of therebetween dielectric layer 130.Wherein first magnetic pole 110 and second magnetic pole 120 are that electric conducting material by tool magnetic is constituted, and magnetize by suitable extra electric field, make and form magnetic dipole (magenetic dipole) 115 and 125 in first magnetic pole 110 and second magnetic pole 120 respectively, to constitute a magnetic field in magnetic capacitance 20 inside, the mobile of charged particle impacted, thus the leakage current of inhibition magnetic capacitance 20.
Required ben be that the magnetic dipole 115 among Fig. 9 and 125 the direction of arrow only are a schematic diagram.For haveing the knack of this skill person, should recognize that the small magnetic dipole institute superposition that magnetic dipole 115 and 125 is actually by a plurality of proper alignment forms, and in the present invention, magnetic dipole 115 and 125 last direction and the indefinite that form for example can be pointed to same direction or different directions.130 of dielectric layers are to be used for separating first magnetic pole 110 and second magnetic pole 120, with in first magnetic pole 110 and second magnetic pole, 120 place's stored charges, store electrical potential energy.In one embodiment of this invention, first magnetic pole 110 and second magnetic pole 120 include the magnetic conductive material, rare earth element for example, dielectric layer 130 is by titanium oxide (TiO3), barium monoxide titanium (BaTiO3) or semi-conductor layer, for example silica (silicon oxide) constitutes, yet the present invention is not limited to this, first magnetic pole 110, second magnetic pole 120 and dielectric layer 130 all visual product demand and select suitable other materials for use.
The operating principle of metaphor explanation magnetic capacitance of the present invention is as follows.The material phenomenon that resistance changes under certain magnetic field is called " magneto resistance effect ", and magnetic metal and alloy material generally all have this magneto-resistor phenomenon, and generally, the resistivity of material only produces slight reducing in magnetic field; Under certain condition, the amplitude that resistivity reduces is quite big, exceeds more than 10 times than the magnetoelectricity resistance of common magnetic metal and alloy material, and can produce very huge magneto resistance effect.If further combined with the Maxwell-Wagner circuit model, also may produce very huge magnetocapacitance effect in the magnetic-particle complex media.
In existing electric capacity, capacitance C is by the dielectric constant of the area A of electric capacity, dielectric layer and thickness d decision, as shown in the formula.Yet in the present invention, magnetic capacitance 20 mainly utilizes the magnetic dipole of proper alignment in first magnetic pole 110 and second magnetic pole 120 to form magnetic field, the electronics of internal reservoir is rotated towards same spin direction, carry out neat arrangement, so can be under similarity condition, hold more electric charge, and then increase the storage density of energy.Be analogous to existing electric capacity, the operation principles of magnetic capacitance 20 is equivalent to the dielectric constant that is used for changing dielectric layer 130 by magnetic field, so and cause capacitance significantly to promote.
In addition, in the present embodiment, interface 132 between interface 131 between first magnetic pole 110 and the dielectric layer 130 and second magnetic pole 120 and the dielectric layer 130 is a uneven surface, with by the mode that increases surface area A, further promotes the capacitance C of magnetic capacitance 20.
Please refer to Figure 10, Figure 10 is first magnetic pole, the 110 alternative structural representations of magnetic capacitance of the present invention.As shown in figure 10, first magnetic pole 110 is a sandwich construction, includes one first magnetosphere 112, a separator 114 and one second magnetosphere 116.Wherein separator 114 is made of nonmagnetic substance, first magnetosphere 112 and second magnetosphere 116 then include the electric conducting material of tool magnetic, and when magnetization, by different extra electric fields, make the magnetosphere 112 of winning have different directions respectively with magnetic dipole 113 and 117 in second magnetosphere 114, for example in a preferred embodiment of the present invention, magnetic dipole 113 and 117 direction are oppositely, and can further suppress the leakage current of magnetic capacitance 20.In addition, it is emphasized that, the structure of magnetic pole 110 is not limited to aforesaid three-decker, and can be in a similar fashion, with a plurality of magnetospheres and continuous staggered the stacking of nonmagnetic layer, relend the leakage current that further suppresses magnetic capacitance 20 by the adjustment of magnetic dipole direction in each magnetosphere, even reach the almost effect of leakage current.
In addition, because existing energy-storage travelling wave tube stores in the mode of chemical energy mostly, therefore all need to have the dimensions, otherwise tend to cause declining to a great extent of efficient.Compared to this, magnetic capacitance 20 of the present invention is that the mode with electrical potential energy stores, and because of employed material applicable to manufacture of semiconductor, so can form magnetic capacitance 20 and peripheral circuit by suitable manufacture of semiconductor connects, and then the volume and the weight of dwindling magnetic capacitance 20, because this manufacture method can use general manufacture of semiconductor, it should be has the knack of this skill person and knows, so do not repeat them here.
In sum, electric power system of the present invention changes the connection in series-parallel combination of magnetic capacitance by the switching of switch, and then can fully use the electric power that is stored in the magnetic capacitance, so not only increase the service time of electric power system, and can not cause its waste of power resources.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be not break away from the technical solution of the present invention content, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (14)
1, a kind of magnetic capacitor, an exportable direct current electric power is characterized in that this magnetic capacitor comprises:
A plurality of magnetic capacitances, store electrical energy is also exported this direct current power, respectively this magnetic capacitance has one first end and one second end, and described magnetic capacitance is with one M * N arranged, wherein, M, N be integer and both one of them for greater than one integer, and in the same delegation of this matrix, described magnetic capacitance is connected mutually; And
A plurality of first switches connect one first switch between first end of each magnetic capacitance and second end; And
A plurality of second switches, in each row of this matrix, first end of two adjacent magnetic capacitances and second end wherein connect a second switch respectively between one;
On/Off by described first switch and second switch makes described magnetic capacitance series/parallel.
2, magnetic capacitor as claimed in claim 1, it is characterized in that: this magnetic capacitor also comprises a plurality of the 3rd switches, each magnetic capacitance and first switch room that is connected with this magnetic capacitance connect one the 3rd switch, and the 3rd switch and this magnetic capacitance first switch in parallel of connecting and being connected with this magnetic capacitance.
3, magnetic capacitor as claimed in claim 1 or 2, it is characterized in that: described magnetic capacitance also has one first magnetic pole, one second magnetic pole and a therebetween dielectric layer, wherein this first magnetic pole and second magnetic pole are that electric conducting material by tool magnetic constitutes, and the magnetic coupling extreme direction of this first magnetic pole is identical, and the magnetic coupling extreme direction of this second magnetic pole is identical.
4, magnetic capacitor as claimed in claim 3, it is characterized in that: at least one in this first magnetic pole and this second magnetic pole has one first magnetosphere, one second magnetosphere and is folded between this first magnetosphere and this second magnetosphere and the separator of non magnetic material, and this first magnetospheric magnetic coupling extreme direction is in contrast to this second magnetospheric magnetic coupling extreme direction.
5, a kind of electric power system is characterized in that this electric power system comprises:
One magnetic capacitor, it comprises:
A plurality of magnetic capacitances, be store electrical energy and export a direct current electric power, respectively this magnetic capacitance has one first end and one second end, and described magnetic capacitance is with one M * N arranged, wherein, M, N be integer and both one of them for greater than one integer, and in the same delegation of this matrix, described magnetic capacitance is connected mutually, and
A plurality of first switches connect one first switch between first end of each magnetic capacitance and second end,
A plurality of second switches, in each row of this matrix, first end of two adjacent magnetic capacitances and second end wherein connect a second switch between one;
At least one voltage-sensor is coupled to this magnetic capacitor, is used to detect the magnitude of voltage of this magnetic capacitor output; And
One control die set is coupled to this voltage-sensor and this magnetic capacitor, and this control die set controls described first switch according to this magnitude of voltage and described second switch is opened or closed, and makes described magnetic capacitance series/parallel.
6, electric power system as claimed in claim 5, it is characterized in that: this magnetic capacitor also comprises a plurality of the 3rd switches of being controlled by this control die set, each magnetic capacitance and first switch room that is connected with this magnetic capacitance connect one the 3rd switch, and the 3rd switch and this magnetic capacitance first switch in parallel of connecting and being connected with this magnetic capacitance.
7, electric power system as claimed in claim 6 is characterized in that: the quantity of this at least one voltage-sensor is one.
8, electric power system as claimed in claim 6 is characterized in that: the quantity of this at least one voltage-sensor equals the quantity of described magnetic capacitance, and the voltage of corresponding respectively each magnetic capacitance of detecting of each voltage-sensor.
9, electric power system as claimed in claim 7, it is characterized in that: this control die set comprises a Power Management Unit and a switch control unit, and this Power Management Unit receives the magnitude of voltage of this at least one voltage-sensor and orders about this switch control unit and control described first, second and third switch open/close.
10, electric power system as claimed in claim 9 is characterized in that: this control die set comprises and comprises that also one is coupled to the DC-DC converter of this magnetic capacitor, exports after the direct current power voltage stabilizing of exporting in order to this magnetic capacitor.
11, as each described electric power system in the claim 5～10, it is characterized in that: described magnetic capacitance also has one first magnetic pole, one second magnetic pole and a therebetween dielectric layer, wherein this first magnetic pole and second magnetic pole are that electric conducting material by tool magnetic constitutes, and the magnetic coupling extreme direction of this first magnetic pole is identical, and the magnetic coupling extreme direction of this second magnetic pole is identical.
12, electric power system as claimed in claim 11, it is characterized in that: at least one in this first magnetic pole and this second magnetic pole has one first magnetosphere, one second magnetosphere and is folded between this first magnetosphere and this second magnetosphere and the separator of non magnetic material, and this first magnetospheric magnetic coupling extreme direction is in contrast to this second magnetospheric magnetic coupling extreme direction.
13, a kind of control method of magnetic capacitor, this magnetic capacitor store electrical energy is also exported a direct current electric power, this magnetic capacitor has the magnetic capacitance of a plurality of M of being * N arranged, M, N be integer and both one of them for greater than one integer, it is characterized in that:
This control method comprises following steps:
(a) detect the magnitude of voltage of this magnetic capacitor;
(b) when magnitude of voltage during greater than a critical value, at least a portion magnetic capacitance magnitude of voltage parallel with one another and its output DC power of controlling in this magnetic capacitor is higher than this critical value; And, control in this magnetic capacitor that at least a portion changes to series connection in the magnetic capacitance in parallel when magnitude of voltage during less than a critical value, the magnitude of voltage of its output DC power is incremented to is not less than this critical value.
14, the control method of magnetic capacitor as claimed in claim 13, it is characterized in that: also comprise a DC-DC converter that is coupled to this magnetic capacitor, export after the direct current power voltage stabilizing of exporting in order to this magnetic capacitor, and this critical value is the minimum critical voltage value of the opereating specification of this DC-DC converter.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872785A (en) * | 2012-12-10 | 2014-06-18 | 华为技术有限公司 | Electric power storage device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872785A (en) * | 2012-12-10 | 2014-06-18 | 华为技术有限公司 | Electric power storage device |
| CN103872785B (en) * | 2012-12-10 | 2017-02-22 | 华为技术有限公司 | Electric power storage device |
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Open date: 20100317 |