CN101728874A - Power system with charging protection mechanism - Google Patents
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- CN101728874A CN101728874A CN200810171230A CN200810171230A CN101728874A CN 101728874 A CN101728874 A CN 101728874A CN 200810171230 A CN200810171230 A CN 200810171230A CN 200810171230 A CN200810171230 A CN 200810171230A CN 101728874 A CN101728874 A CN 101728874A
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Abstract
The invention relates to a power system with a charging protection mechanism, capable of being charged by an external power supply for energy storage. The power system comprises an energy storage device for storing energy in a form of electrical potential energy, and a charging protection unit which is in electric connection with the energy storage device and controls whether the external power supply is connected with the energy storage device according to the voltage state of the energy storage device. The power system comprises the energy storage device with a magnetic capacitor unit and a charging protection unit in electric connection with the magnetic capacitor unit, and the charging protection unit controls whether the charger is connected with the magnetic capacitor unit according to the voltage state of the magnetic capacitor unit, so the charger is prevented from overcharging the magnetic capacitor unit caused by abnormity of the charger and a self-protection mechanism of the energy storage device under abnormal charging condition is provided.
Description
Technical field
The present invention relates to a kind of power-supply system, particularly relate to a kind of in order to its energy storage device is carried out the power-supply system with charging protection mechanism of charge protection.
Background technology
The electrical power storage element that more generally uses is nothing more than being battery, electric capacity or super capacitor (Super capacitor) etc. now.Though electric capacity is comparatively simple on manufacturing process (processing procedure),, can only use as of short duration energy storage because its storage volume is little.And traditional battery mainly is 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 its 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, grows variety of issue when excessively charging and discharging easily; For example: present employed storage battery, can reuse though bragging about, the restriction in its life-span is still arranged.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.
As for super capacitor then is a kind of element between between battery and electric capacity, claim electric double layer capacitance (Electrical Double-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 also bigger than common electric capacity, but its shortcoming is: have chemical characteristic because chemical material is arranged, and easy electric leakage shortcoming just like battery, add that again because also have part be the fast phenomenon of the velocity of discharge of physical characteristic, just produce the phenomenon that not to have electricity thus, can't reach the function of effective electric power storage.Therefore even the pressure withstanding degree of super capacitor is not high, and internal resistance is bigger, cannot be used for alternating current circuit, and if the improper use meeting cause phenomenons such as electrolyte leakage.And above-mentioned these energy-storage travelling wave tubes all can't possess advantages such as long (high charge-discharge number of times), high-energy storage density of life-span, transient high power output and fast charging and discharging simultaneously.
In addition, along with the universalness and the high performance of mobile electronic product, make the demand of big capacity energy-storage travelling wave tube grow to even greater heights, and the related charger of big capacity energy-storage travelling wave tube that makes become the key element that can't be short of.
And; because suffer improper charging or overcharge and damage, existing charger mostly is provided with a protective circuit, in order to detect the temperature and the voltage of energy-storage travelling wave tube in charging process in order to prevent energy-storage travelling wave tube; with when the charging generation is unusual, can in time stop energy-storage travelling wave tube being charged.But because protective circuit is arranged on the charger end; when protective circuit generation problem; it is unusual and when allowing charger continue energy-storage travelling wave tube charge to detect charging, because energy-storage travelling wave tube self-protective mechanism not itself, thereby still can damage because charged unusually by charger.
Therefore; if can provide a kind of energy storage device the mechanism of performance self-protection under the abnormal conditions can take place, will help to develop with energy-storage travelling wave tube as the electronic product of power source and expand the application of energy-storage travelling wave tube in charging in conjunction with an energy-storage travelling wave tube and that possesses advantages such as long (high charge-discharge number of times), high-energy storage density of life-span, transient high power output and fast charging and discharging.
Summary of the invention
The objective of the invention is to; mainly provide a kind of power-supply system with charging protection mechanism of new structure, technical problem to be solved is to make it stop charging when the charging generation is unusual in good time; and can protection itself not be damaged, be very suitable for practicality.
The object of the invention to solve the technical problems realizes by the following technical solutions.According to a kind of power-supply system that the present invention proposes with charging protection mechanism, can accept external power source charging with energy storage, this power-supply system comprises: an energy storage device, it is to come storage power with the form of electrical potential energy; And a charge protection unit, be electrically connected with this energy storage device, and, control this external power source and whether be connected with this energy storage device according to the voltage status of this energy storage device.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Preferably, aforesaid power-supply system with charging protection mechanism, wherein said energy storage device is a magnetic capacitance or a magnetic capacitance group of being made up of in the serial or parallel connection mode a plurality of magnetic capacitances.
Preferably, aforesaid power-supply system with charging protection mechanism, wherein said energy storage device is a magnetic capacitance or a magnetic capacitance group of being made up of with series-parallel system a plurality of magnetic capacitances.
Preferably; aforesaid power-supply system with charging protection mechanism; wherein said magnetic capacitance includes one first magnetic pole, one second magnetic pole and is arranged at therebetween a dielectric layer, wherein has magnetic dipole in this first magnetic pole and second magnetic pole to suppress the leakage current of this magnetic capacitance.
Preferably, aforesaid power-supply system with charging protection mechanism, wherein said first magnetic pole includes: one first magnetosphere has the magnetic dipole that is arranged in first direction; One second magnetosphere, the magnetic dipole with the second direction of being arranged in; And a separator, include nonmagnetic substance, be arranged between this first magnetosphere and this second magnetosphere; Wherein this first direction and this second direction are reverse each other, to suppress the leakage current of this magnetic capacitance.
Preferably, aforesaid power-supply system with charging protection mechanism, wherein said first magnetic pole and second magnetic pole are to include rare earth element, this dielectric layer is made of titanium oxide (TiO3), barium monoxide titanium (BaTiO3) or semi-conductor layer.
Preferably, aforesaid power-supply system with charging protection mechanism, wherein said semiconductor layer is a silica.
Preferably; aforesaid power-supply system with charging protection mechanism; wherein said charge protection unit comprises a switch and a control circuit; this switch determines this external circuit and this energy storage device whether to connect; this control switch is controlled this switch and is opened and closed; and the relatively voltage of this energy storage device and a reference voltage; with at the voltage of this energy storage device during less than this reference voltage; make this switch connect this external power source and this energy storage device; and during greater than this reference voltage, make this switch not connect this external power source and this energy storage device at the voltage of this energy storage device.
Preferably, aforesaid power-supply system with charging protection mechanism, wherein said switch is a relay.
Preferably; aforesaid power-supply system with charging protection mechanism; wherein said control circuit comprises that a digital comparator (is a digital comparator; below all claim digital comparator) and an analog/digital converter that is connected an input of this digital comparator (be analogy/digital converter; this paper all is called analog/digital converter); and this reference voltage is a numerical value; it imports another input of this digital comparator; this analog/digital converter with the voltage digitisation of this energy storage device after input this digital comparator and this reference voltage compare, make this digital comparator export a control signal and control this switch keying according to comparative result.
Preferably, aforesaid power-supply system with charging protection mechanism, wherein said control circuit is an analog comparator, and one input end is accepted this reference voltage, and another input is accepted the voltage of this energy storage device.
By technique scheme; the power-supply system that the present invention has charging protection mechanism has following advantage and beneficial effect at least: the present invention is by this energy storage device and this charge protection unit are combined; make the charge protection unit in the process of energy storage device charging; at any time detect the voltage status of energy storage device; when energy storage device being overcharged to take place unusual at charger; can in time interrupt the charging action of external power source to energy storage device; reason overcharges and damages can to protect energy storage device to take place under the unusual situation of charging not at charger, and can reach the purpose and the effect of self-protection.
In sum; the invention relates to a kind of power-supply system with charging protection mechanism; can accept external power source charging with energy storage; this power-supply system comprises an energy storage device and the charge protection unit that is electrically connected with this magnetic capacitance unit with a magnetic capacitance unit; the charge protection unit is according to the voltage status of this magnetic capacitance unit; whether control this charger is connected with this magnetic capacitance unit; can prevent that whereby charger is unlikely because take place unusually the magnetic capacitance unit to be overcharged, provide energy storage device that the mechanism of performance self-protection under the abnormal conditions takes place in charging.Therefore, the present invention can stop charging in good time when the charging generation is unusual, and can protection itself not be damaged, and is very suitable for practicality.The present invention has obvious improvement technically, and has tangible good effect, really is a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, in order to more clearly understand technological means of the present invention, and can be implemented according to the content of specification, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is the circuit block diagram of a preferred embodiment of the power-supply system of the present invention with charging protection mechanism.
Fig. 2 is the thin portion circuit diagram of the charge protection unit of present embodiment.
Fig. 3 is the magnetic capacitance of present embodiment and the comparison schematic diagram of other existing store energy media.
Fig. 4 is the structural representation of magnetic capacitance in the present embodiment.
Fig. 5 is the structural representation of first magnetic pole among another embodiment of magnetic capacitance of present embodiment.
Fig. 6 is the schematic diagram of a magnetic capacitance group in another embodiment of the present invention.
Fig. 7 is the charge-discharge characteristic curve chart of the magnetic capacitance unit of present embodiment.
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 the power-supply system with charging protection mechanism, structure, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.
About aforementioned and other technology contents, characteristics and effect of the present invention, in the following detailed description that cooperates with reference to a graphic preferred embodiment, can clearly present.
Seeing also Fig. 1 and shown in Figure 2, is the circuit block diagram of a preferred embodiment of the energy storage device of the present invention with charging protection mechanism.Fig. 1 is the circuit block diagram of a preferred embodiment of the power-supply system of the present invention with charging protection mechanism, and Fig. 2 is the thin portion circuit diagram of the charge protection unit of present embodiment.The power-supply system with charging protection mechanism 1 of present embodiment; can be applied in needs high-energy, high-power mobile electronic product; for example notebook computer, personal digital assistant (PDA), automobile batteries and motor vehicle; perhaps in the Locating Type power supply device as power source; as shown in Figure 1, power-supply system 1 mainly comprises an energy storage device 11 and a charge protection unit 12.
Above-mentioned energy storage device 11 is accepted external power source charging with energy storage, and this external power source can be the power supply that the charger, a battery, another energy storage device or the electronic installation that are electrically connected with the city are provided.Energy storage device 11 is to come storage power with the form of electrical potential energy, and it is made of a kind of magnetic capacitance element in the present embodiment, and its characteristic is held the back explanation.
Above-mentioned charge protection unit 12, the voltage of detecting energy storage device 11, and control external power source and whether be connected with energy storage device 11 according to the detecting result, prevent in time that whereby external power source from overcharging to energy storage device 11.
As shown in Figure 2, in the present embodiment, external power source is to be example with a charger 2.Charger 2 is existing charging circuits, general charging circuit can generally be divided into two kinds of constant-voltage charge and constant-current charges, constant-voltage charge is owing to be to charge with fixed voltage, for the very big electric capacity of capacity, for example the charge efficiency of the energy storage device 11 employed magnetic capacitances of present embodiment can be relatively poor, the waste energy, so the charger 2 of the energy storage device 11 of present embodiment is to adopt constant-current charge, its charging modes is to make output voltage be a bit larger tham the voltage of energy storage device 11, to continue output one fixing electric current energy storage device 11 is charged, output voltage up to charger 2 reaches a preset value, represent that promptly energy storage device 11 has been filled full (promptly reaching rated voltage), then can stop energy storage device 11 chargings.But because the magnetic capacitance in the energy storage device 11 has the characteristic of electric capacity, the restriction (being that voltage resistance is limited) of rated voltage is promptly arranged, therefore if charger 2 takes place unusual, can't when reaching preset value, its output voltage stop to cause energy storage device 11 to be run through damage even produce because of energy storage device 11 is overcharged easily and exploding to energy storage device 11 chargings.
Therefore, take place for preventing the above-mentioned phenomenon that overcharges, as shown in Figure 2, the charge protection unit 12 of present embodiment comprises the switch 15 whether a decision charger 2 and energy storage device 11 connect, and the control circuit 10 of control switch 15 keyings.Control circuit 10 is compared the voltage Vc of energy storage device 11 with a reference voltage Vref; and at the voltage Vc of energy storage device 11 during less than reference voltage Vref; make switch 15 connect charger 2 and energy storage device 11; charger 2 can be continued energy storage device 11 chargings; and at the voltage Vc of energy storage device 11 during greater than reference voltage Vref; make switch 15 not connect charger 2 and energy storage device 11, make charger 2 can't continue again energy storage device 11 is charged, with protection energy storage device 11.Below further specify the thin portion circuit of control circuit 10 and switch 15.
This control circuit 10 comprises a digital comparator 13 and an analog/digital converter (being analogy/digital converter) 14 in the present embodiment.The positive input terminal of digital comparator 13 is imported a reference voltage level Vref, and the negative input end of digital comparator 13 connects analog/digital converter 14.
This switch 15 is to be example with a relay in the present embodiment, and it is connected between charger 2 and the energy storage device 11, and is subjected to digital comparator 13 controls.Under normal situation (voltage that is energy storage device 11 is less than reference voltage Vref), switch 15 is in closed condition, so charger 2 can be to energy storage device 11 chargings.When charger 2 began energy storage device 11 charging, charge protection unit 12 obtained electric power and begins energy storage device 11 is carried out detecting voltage from energy storage device 11.At this moment, the positive input terminal of digital comparator 13 is transfused to a reference voltage level Vref, and this reference voltage level Vref is the load voltage value of energy storage device 11 (maximum withstand voltage) or a numerical value slightly littler than load voltage value normally.
Analog/digital converter 14 connects energy storage devices 11 with the voltage VC that obtains energy storage device 11 and after carrying out digitisation, negative input end with magnitude of voltage VC ' the input value comparator 13 of energy storage device 11, whether digital comparator 13 compares the magnitude of voltage VC ' of energy storage device 11 greater than reference voltage level Vref, under normal situation, the voltage of energy storage device 11 can be less than (or equaling at most) reference voltage level Vref, digital comparator 13 outputs this moment one high levle control signal control switch 15 maintains closed condition, and charger 2 can be continued energy storage device 11 chargings.And the voltage of working as energy storage device 11 has reached rated voltage; but charger 2 is because take place unusually still to energy storage device 11 chargings; when making the voltage of energy storage device 11 surpass its rated voltage; digital comparator 13 can be because relatively the magnitude of voltage VC ' of energy storage device 11 be greater than reference voltage level Vref; and export one for example low level control signal control switch 15 open; make to form between charger 12 and the energy storage device 11 and open circuit; and interrupting the charging action of 2 pairs of energy storage devices 11 of charger immediately, protection energy storage device 11 not reason continues to overcharge and damages.
What deserves to be mentioned is, the control circuit 10 of present embodiment also can only use an analog comparator, so then can omit analog/digital converter 14, but need provide the positive input terminal of a reference voltage to analog comparator, so, after the voltage of energy storage device 11 promptly can directly be imported the negative input end of analog comparator and reference voltage and compares, open or close by analog comparator output control signal control switch 15.
The energy storage device 11 of present embodiment can be a single magnetic capacitance (magnetic capacitor) or a magnetic capacitance group of being made up of with series, parallel or series and parallel mode plural magnetic capacitance, magnetic capacitance wherein be a kind of be raw material with the Si semiconductor, under certain the action of a magnetic field, realize the energy-storage travelling wave tube of high density, big capacity store electrical energy by physics energy storage mode.And magnetic capacitance has, and output current is big, volume is little, in light weight, overlength useful life, charging and discharging capabilities is good and characteristic such as the memory effect of not charging, therefore as the electrical power storage element, except volume, weight and the manufacturing cost that can reduce energy-storage travelling wave tube, but also the useful life that can improve energy-storage travelling wave tube.
So of the present invention one is characterised in that the use magnetic capacitance is as energy accumulating device and power source.It should be noted that compared to general electric capacity magnetic capacitance 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.
Seeing also shown in Figure 3ly, is the magnetic capacitance of present embodiment and the comparison schematic diagram of other existing store energy media.As shown in Figure 3, 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, grows variety of issue when excessively charging and discharging easily.
Compared to this, because energy stored all is that mode with electrical potential energy stores in the magnetic capacitance, therefore, except have can with the store energy density of general battery or super capacitor coupling, also 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.
Seeing also shown in Figure 4ly, is the structural representation of magnetic capacitance 400 in one embodiment of the invention.As shown in Figure 4, magnetic capacitance 400 is to include one first magnetic pole 110, one second magnetic pole 120, and a therebetween dielectric layer 130.Wherein first magnetic pole 110 and second magnetic pole 120 are made of the electric conducting material with magnetic, and magnetize by suitable extra electric field, make in first magnetic pole 110 and second magnetic pole 120 and form magnetic dipole (mageneticdipole) 115 and 125 respectively, to constitute a magnetic field in magnetic capacitance 400 inside, the mobile of charged particle impacted, thus the leakage current of inhibition magnetic capacitance 400.
Required ben be that the magnetic dipole 115 among Fig. 4 and 125 the direction of arrow are a schematic diagram.For haveing the knack of the technical staff of this skill, should recognize that the small magnetic dipole that magnetic dipole 115 and 125 is actually by a plurality of proper alignment is formed by stacking, 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 are to 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 the magnetic capacitance of the present invention of metaphor explanation now 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 area A of electric capacity, the DIELECTRIC CONSTANT of dielectric layer
0ε
rAnd the thickness d decision, shown in one.Yet in the present invention, magnetic capacitance 400 mainly is to utilize 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 400 is equivalent to the dielectric constant that is used for changing dielectric layer 130 by magnetic field, so cause the significantly lifting of capacitance.
In addition, in the present embodiment, the interface 132 between the 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 promote the capacitance C of magnetic capacitance 400.
See also shown in Figure 5ly, be the structural representation of first magnetic pole 110 in the another embodiment of the present invention.As shown in Figure 5, first magnetic pole 110 is to be 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 with magnetic, and when magnetization, by different extra electric fields, make the magnetosphere 112 of winning have different directions respectively, for example in a preferred embodiment of the present invention with magnetic dipole 113 and 117 in second magnetosphere 114, magnetic dipole 113 and 117 direction are for oppositely, and can further suppress the leakage current of magnetic capacitance 400.
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, constantly be staggeredly stacked with a plurality of magnetospheres and nonmagnetic layer, relend the leakage current that further suppresses magnetic capacitance 400 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 400 of the present invention is that the mode with electrical potential energy stores, and because employed material goes for semiconductor fabrication process (processing procedure), so can form magnetic capacitance 400 and peripheral circuit by suitable manufacture of semiconductor connects, and then the volume and the weight of dwindling magnetic capacitance 400, because this manufacture method can be used general manufacture of semiconductor, it should be the technical staff who has the knack of this skill knows, so do not repeat them here.
See also shown in Figure 6ly, be the schematic diagram of the magnetic capacitance group 500 in another embodiment of the present invention.Brought forward is described, in the present embodiment, be to utilize manufacture of semiconductor on a silicon substrate, to make a plurality of undersized magnetic capacitances 400, and by the proper metal processing procedure, between these a plurality of magnetic capacitances 400, form and be electrically connected, thereby constitute a magnetic capacitance group 500 that includes a plurality of magnetic capacitances 400, be used as the supply of electric power source of energy accumulating device or external device (ED) again with this magnetic capacitance group 500.In the present embodiment, a plurality of magnetic capacitances 400 in the magnetic capacitance group 500 are that the mode with similar array is electrically connected, yet the present invention is not limited to this, and can be according to different voltage or capacitance demand, carry out suitable serial or parallel connection, to satisfy the supply of electric power demand of various different devices.
Please consult shown in Figure 7 again, charge-discharge characteristic curve chart for the magnetic capacitance unit that illustrates present embodiment, it is a charge-discharge characteristic schematic diagram of the energy storage device 11 of present embodiment, by the discharge curve that shows among the figure as can be known, voltage during energy storage device 11 discharges is not to be to maintain certain value as storage battery, but presents along with the trend of successively decreasing rapidly discharge time.Therefore, in the present embodiment, the voltage regulation unit (figure do not show) of need arranging in pairs or groups again carries out suitable lifting/voltage reducing conversion to the discharge voltage of energy storage device 11, and the direct voltage (decide voltage) that voltage regulation unit can be exported maintain certain value is given a connected load (scheming not show).
In sum; the power-supply system 1 of present embodiment combines energy storage device 11 and charge protection unit 12; make charge protection unit 12 in the process of energy storage device 11 chargings; at any time detect voltage (current potential) state of energy storage device 11; when energy storage device 11 being overcharged to take place unusual at charger 2; can in time interrupt the charging action of 2 pairs of energy storage devices 11 of charger; reason overcharges and damages can to protect energy storage device 11 to take place under the unusual situation of charging not at charger 2 whereby; and can reach the effect and the purpose of self-protection, be very suitable for practicality.
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 the content that does not break away from technical solution of the present invention, 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 (11)
1. the power-supply system with charging protection mechanism can be accepted external power source charging with energy storage, it is characterized in that this power-supply system comprises:
One energy storage device, it is to come storage power with the form of electrical potential energy; And
One charge protection unit is electrically connected with this energy storage device, and according to the voltage status of this energy storage device, controls this external power source and whether be connected with this energy storage device.
2. the power-supply system with charging protection mechanism as claimed in claim 1 is characterized in that wherein said energy storage device is a magnetic capacitance or a magnetic capacitance group of being made up of in the serial or parallel connection mode a plurality of magnetic capacitances.
3. the power-supply system with charging protection mechanism as claimed in claim 1 is characterized in that wherein said energy storage device is a magnetic capacitance or a magnetic capacitance group of being made up of with series-parallel system a plurality of magnetic capacitances.
4. as claim 2 or 3 described power-supply systems with charging protection mechanism; it is characterized in that wherein said magnetic capacitance includes one first magnetic pole, one second magnetic pole and is arranged at therebetween a dielectric layer, wherein has magnetic dipole to suppress the leakage current of this magnetic capacitance in this first magnetic pole and second magnetic pole.
5. the power-supply system with charging protection mechanism as claimed in claim 4 is characterized in that wherein said first magnetic pole includes:
One first magnetosphere has the magnetic dipole that is arranged in first direction;
One second magnetosphere, the magnetic dipole with the second direction of being arranged in; And
One separator includes nonmagnetic substance, is arranged between this first magnetosphere and this second magnetosphere;
Wherein this first direction and this second direction are reverse each other, to suppress the leakage current of this magnetic capacitance.
6. the power-supply system with charging protection mechanism as claimed in claim 4 is characterized in that wherein said first magnetic pole and second magnetic pole are to include rare earth element, and this dielectric layer is made of titanium oxide, barium monoxide titanium or semi-conductor layer.
7. the power-supply system with charging protection mechanism as claimed in claim 6 is characterized in that wherein said semiconductor layer is a silica.
8. the power-supply system with charging protection mechanism as claimed in claim 1; it is characterized in that wherein said charge protection unit comprises a switch and a control circuit; this switch determines this external circuit and this energy storage device whether to connect; this control switch is controlled this switch and is opened and closed; and the relatively voltage of this energy storage device and a reference voltage; with at the voltage of this energy storage device during less than this reference voltage; make this switch connect this external power source and this energy storage device; and during greater than this reference voltage, make this switch not connect this external power source and this energy storage device at the voltage of this energy storage device.
9. the power-supply system with charging protection mechanism as claimed in claim 8 is characterized in that wherein said switch is a relay.
10. the power-supply system with charging protection mechanism as claimed in claim 8; it is characterized in that wherein said control circuit comprises that a digital comparator and is connected the analog/digital converter of an input of this digital comparator; and this reference voltage is a numerical value; it imports another input of this digital comparator; this analog/digital converter with the voltage digitisation of this energy storage device after input this digital comparator and this reference voltage compare, make this digital comparator export a control signal and control this switch keying according to comparative result.
11. the power-supply system with charging protection mechanism as claimed in claim 8 is characterized in that wherein said control circuit is an analog comparator, one input end is accepted this reference voltage, and another input is accepted the voltage of this energy storage device.
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| CN200810171230A CN101728874A (en) | 2008-10-27 | 2008-10-27 | Power system with charging protection mechanism |
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| CN200810171230A CN101728874A (en) | 2008-10-27 | 2008-10-27 | Power system with charging protection mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104716290A (en) * | 2013-12-12 | 2015-06-17 | 现代自动车株式会社 | Battery assembly and hybrid electric vehicle including the same |
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2008
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104716290A (en) * | 2013-12-12 | 2015-06-17 | 现代自动车株式会社 | Battery assembly and hybrid electric vehicle including the same |
| CN104716290B (en) * | 2013-12-12 | 2018-09-14 | 现代自动车株式会社 | Battery component and hybrid electric vehicle including battery component |
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