CN102710006A - Double-power supply system with balance bridge arm - Google Patents
Double-power supply system with balance bridge arm Download PDFInfo
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- CN102710006A CN102710006A CN2012101554227A CN201210155422A CN102710006A CN 102710006 A CN102710006 A CN 102710006A CN 2012101554227 A CN2012101554227 A CN 2012101554227A CN 201210155422 A CN201210155422 A CN 201210155422A CN 102710006 A CN102710006 A CN 102710006A
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Abstract
The invention provides a double-power supply system with a balance bridge arm, comprising an alternating current power supply, an alternating current rectifying module which is connected to the alternating current power supply through a switch SW1 and can realize the rectification and the boosting of the alternating current input through a bidirectional rectifying circuit, a direct current rectifying module which is used for realizing the boosting and charging of the battery, and is connected with the alternating current rectifying module, an inverting module which is used for realizing the inverting output, and is connected with the direct current rectifying module, and a balance module which is used for realizing the bus balance when the direct current power supply is carried out, is earthed through a switch SW2, and achieves the line multiplexing with the alternating current rectifying module. In the invention, the alternating current rectifying module and the balance module multiplex the balance bridge arm, the multiplex of the line and the balance between positive and negative buses can be realized by adding one selector switch only; the control method and the timing sequence of the double-power supply system are different in different modes; and furthermore, the double-power supply system is small in volume, low in cost, and high in reliability.
Description
Technical field
The present invention relates to a kind of dual power supply system, relate in particular to a kind of dual power supply system with the balance brachium pontis.
Background technology
In existing dual power supply system, especially in the monocell commutation system of duplicate supply input, the equilibrium problem of positive and negative busbar is that the industry technology personnel must not irrespective problem always; Most of related system is just given up this requirement in order to control cost and to reduce volume in the design phase, does not promptly do the consideration of bus balance, but like this, all can cause certain influence to machine performance and reliability, has reduced its quality and stability.
Summary of the invention
Technical problem to be solved by this invention is that the dual power supply system that a kind of cost is low, volume is little need be provided, and realizes the balance of bus.
To this, the present invention provides a kind of dual power supply system with the balance brachium pontis, comprising:
Be used to realize the AC power of Alternating Current Power Supply;
The AC rectification module, said AC rectification module is connected to AC power through switch SW 1, and said AC rectification module realizes exchanging the rectification of input and boosting through the biphase rectification circuit of ac/dc;
The direct current rectification module, said direct current rectification module is connected with the AC rectification module, and said direct current rectification module is realized boosting of battery through two-way step-up/down circuit and is charged;
Be used to realize the inversion module of AC/DC inversion output, said inverter circuit is connected with the direct current rectification module; And,
Be used for when direct current supply, realizing the balance module of bus balance, said balance module is through switch SW 2 ground connection, and said balance module and AC rectification module realize line sharing.
Wherein, Said balance module and AC rectification module realize line sharing, and said line sharing is the multiplexing of balance brachium pontis, transistor or the FET of said balance brachium pontis through being connected in series each other; Be used to realize the bridge arm balance of electric bridge; Said FET is parallel with discrete diode, and said discrete diode is the discrete power device, has comprised semiconductor diode; The biphase rectification circuit that said AC rectification module is an ac/dc promptly through the rectifying circuit of the two-way AC-DC of balance brachium pontis realization, is also referred to as two-way AC/DC rectifying circuit; Said direct current rectification module is also claimed the battery rectification circuit; Realize direct current supply through battery; Be a two-way DC-DC circuit, be also referred to as two-way DC/DC circuit, said direct current rectification module through two-way step-up/down circuit to realize boosting and charging of battery; Said inversion module is used to realize the inversion output of AC/DC; And be connected with the direct current rectification module; Said inversion module can adopt the half-bridge circuit of AC/DC, and promptly the semibridge system circuit of DC/AC can be realized the inversion output of AC/DC through semibridge system inversion circuit; Said balance module through with AC rectification module reuse balance brachium pontis; Be that balance module and AC rectification module realize line sharing; Said balance module is through switch SW 2 ground connection; That is to say that the line sharing of said balance module and AC rectification module only increases the balance that a diverter switch has just realized the positive and negative busbar under the direct current supply pattern.
The present invention is through line sharing, and promptly balance brachium pontis multiplexing and then realize the positive and negative busbar balance of dual power supply system makes cost very low, and volume is little, the dual power supply system of high-power in being highly suitable for, high reliability.
Mode of operation of the present invention comprises Alternating Current Power Supply pattern and direct current supply pattern; Under the Alternating Current Power Supply pattern; But the AC rectification module is the half-bridge circuit of two-way flow; Exchange input and realize the rectification that exchanges through switch SW 1, inductance L 1, transistor/FET Q1 and transistor/FET Q2 and boost, but the two-way flow of AC rectification module has guaranteed the simplicity that balancing circuitry is realized, only needs to increase the balance that a switch SW 2 can realize positive and negative busbar; Said direct current rectification module is two-way flowable DC-DC circuit; It also is battery charger; Charge the battery through bus; Bus charges the battery through transistor/FET Q3, transistor/FET Q5, transistor/FET Q6, inductance L 2, inductance L 3, switch SW 3 and switch SW 5 composition buck circuits when exchanging input, and promptly the step-down circuit charges the battery; Inverter circuit can be the semi-bridge inversion circuit.
Under the direct current supply pattern; Be under the battery powered mode; The direct current rectifying circuit is formed the boos circuit through transistor/FET Q3, transistor/FET Q5, transistor/FET Q6, inductance L 2, inductance L 3, switch SW 3 and switch SW 5 and is boosted to bus, promptly forms booster circuit and boosts to bus; AC rectification circuit when balance module passes through the balance brachium pontis and exchanges input is realized line sharing; Be multiplexing inductance L 1, transistor/FET Q1 and transistor/FET Q2; Only need switch to center line to input, can realize the balance of bus through oxide-semiconductor control transistors/FET Q1 and transistor/break-make of FET Q2 through switch SW 1 and switch SW 2; Inverter circuit is the semi-bridge inversion circuit.
Compared with prior art, AC rectification module of the present invention and balance module reuse balance brachium pontis only need be through increasing the balance that a diverter switch just can realize the multiplexing and positive and negative busbar of circuit, and its control method is different with sequential when different mode; Said different mode is Alternating Current Power Supply pattern or direct current supply pattern; Realized the balance of the positive and negative busbar of dual power supply system, said battery and AC power alternately guarantee dual power supply, and volume is little; Cost is low, and can guarantee the performance and the reliability of dual power supply system.High-power and the high dual power supply system of reliability requirement during the present invention is particularly suitable for.
Further improvement of the present invention is that the biphase rectification circuit of said AC rectification module is the bi-directional half bridge rectifying circuit.Said bi-directional half bridge rectifying circuit is a semibridge system AC/DC biphase rectification circuit, i.e. semibridge system ac/dc biphase rectification circuit can be through only increasing a diverter switch on hardware; Can realize the switching of Alternating Current Power Supply pattern and direct current supply pattern, realize the bus balance under the direct current supply pattern through revising sequential, simple in structure; Cost is low, and volume is little, compared with prior art; Through the line sharing of balance brachium pontis, only just increased a diverter switch, just realized the balance of positive and negative busbar; Increase on cost is considerably less, and effect is remarkable, and circuit has obtained good optimization and improvement.
Further improvement of the present invention is that said bi-directional half bridge rectifying circuit comprises the transistor of serial connection or be parallel with the FET of discrete diode that said switch SW 1 and switch SW 2 are connected to the mid point of bi-directional half bridge rectifying circuit through inductance L 1.
Wherein, said transistor is preferably IGBT, i.e. insulated gate bipolar transistor; Said FET is MOSFET, when using MOSFET, needs parallelly connected discrete diode; Said switch SW 1 and switch SW 2 are connected to the mid point of bi-directional half bridge rectifying circuit through inductance L 1; It is switch SW 1 and switch SW 2 are connected to transistor or FET through inductance L 1 mid point; Can be when direct current supply; Make that the positive and negative busbar counterbalance effect of balance module is more remarkable, can also promote to realize exchanging the rectification of input and boosting simultaneously.
Further improvement of the present invention is that said bi-directional half bridge rectifying circuit comprises the transistor of serial connection; Said AC power is connected to inductance L 1 through switch SW 1, and inductance L 1 is connected to the mid point of transistor Q1 and transistor Q2 to realize exchanging the rectification of input.
Wherein, switch SW 1, inductance L 1, transistor Q1 and transistor Q2 form the AC rectification circuit of semibridge system, i.e. bi-directional half bridge rectifying circuit, and said bi-directional half bridge rectifying circuit carries out rectification to the interchange of input and boosts; The balance brachium pontis circuit of switch SW 2, inductance L 1, transistor Q1 and transistor Q2 Compositional balance module when the direct current supply pattern, promptly during battery powered mode, is realized the balance of busbar voltage through the break-make of oxide-semiconductor control transistors Q1 and transistor Q2; Switch SW 3, switch SW 5, inductance L 2, inductance L 3, transistor Q3, transistor Q5 and transistor Q6 form the boost/buck circuit; It is the step-up/down circuit; Form buck circuit (step-down circuit) during the Alternating Current Power Supply pattern to battery charge; Form boost circuit (booster circuit) during direct current supply pattern (battery input), bus is boosted; Transistor Q8 and transistor Q9 form the semi-bridge inversion circuit and realize the AC/DC inversion.
Said switch SW 1 closure, switch SW 2 is broken off, and then is in the Alternating Current Power Supply pattern; Said switch SW 1 is broken off, and switch SW 2 closures then are in the direct current supply pattern; Further adopt above-mentioned technical characterictic, the present invention can exchange the switching of input and direct current input through diverter switch and then Rapid Realization, has realized positive and negative busbar balance cheaply through line sharing simultaneously; Said line sharing is that the balance brachium pontis of half-bridge rectifying circuit and balance module of AC rectification module is multiplexing; Simple in structure, volume is little, on this basis; The half-bridge rectifying circuit of said AC rectification module, the balance brachium pontis of balance module and direct current rectification module step-up/down circuit all adopt transistor to realize, further promote the quality and the stability of product again.
Further improvement of the present invention is that said bi-directional half bridge rectifying circuit comprises the FET of serial connection, and said FET is parallel with discrete diode; Said AC power is connected to inductance L 1 through switch SW 1, and inductance L 1 is connected to the mid point of FET Q1 and FET Q2 to realize exchanging the rectification of input.
Wherein, switch SW 1, inductance L 1, FET Q1 and FET Q2 form the AC rectification circuit of semibridge system, i.e. bi-directional half bridge rectifying circuit, and said bi-directional half bridge rectifying circuit carries out rectification to the interchange of input and boosts; The balance brachium pontis circuit of switch SW 2, inductance L 1, FET Q1 and FET Q2 Compositional balance module, when the direct current supply pattern, promptly during battery powered mode, the balance of the break-make realization busbar voltage through control FET Q1 and FET Q2; Switch SW 3, switch SW 5, inductance L 2, inductance L 3, FET Q3, FET Q5 and FET Q6 form the boost/buck circuit; It is the step-up/down circuit; Form buck circuit (step-down circuit) during the Alternating Current Power Supply pattern to battery charge, promptly form the step-down circuit battery charge; Form boost circuit (booster circuit) during direct current supply pattern (battery input), promptly when battery is imported, form booster circuit bus is boosted; FET Q8 and FET Q9 form the semi-bridge inversion circuit and realize the AC/DC inversion.
The present invention can exchange the switching of input and direct current input through diverter switch and then Rapid Realization; Realized positive and negative busbar balance cheaply through line sharing simultaneously; Simple in structure, volume is little, on this basis; The half-bridge rectifying circuit of said AC rectification module, the balance brachium pontis of balance module and direct current rectification module step-up/down circuit all adopt FET to realize, further promote the quality and the stability of product.
Further improvement of the present invention is, inductance L 1 is connected to the positive pole of AC power, the minus earth of AC power through switch SW 1; Inductance L 1 is through switch SW 2 ground connection.Through the switching of switch SW 1 and switch SW 2, can the Rapid Realization Alternating Current Power Supply and the switching of direct current supply, and then realized charging the battery through bus under the Alternating Current Power Supply pattern; Under the direct current supply pattern,, realize that through the direct current rectification module direct current rectification and bus boost through the balance of balance brachium pontis realization positive and negative busbar.
Further improvement of the present invention is that under the Alternating Current Power Supply pattern, said direct current rectification module charges the battery through the step-down circuit; Under the direct current supply pattern, said direct current rectification module boosts to bus through booster circuit.Said direct current rectification module is realized the step-down charging and the power supply of boosting respectively under the various power pattern, and then has saved the quantity of components and parts, and circuit is rationally effective.
Further improvement of the present invention is; The step-up/down circuit of said direct current rectification module comprises: battery V1; The positive pole of battery V1 is connected to switch SW 3 and inductance L 2, and the negative pole of battery V1 is connected to switch SW 5 and inductance L 3, and the two ends of switch SW 3 and switch SW 5 are parallel with capacitor C 5; Inductance L 2 is connected in the mid point of FET Q3 and FET Q6, and inductance L 3 is connected in the mid point of FET Q6 and FET Q5; Wherein, FET Q3, FET Q6 and FET Q5 are connected in series and are parallel with discrete diode each other.
Wherein, FET Q3 one end is connected to inductance L 2 and FET Q6, and the other end is connected to the transistor/FET Q1 of AC rectification module; FET Q5 one end is connected to inductance L 3 and FET Q6, and the other end is connected to the transistor/FET Q2 of AC rectification module; Said battery V1 realizes the direct current rectification through switch and LC filtering, and then the boosting and charge of realization battery, and its advantage is that the present invention is simple and reasonable, the bus good balance effect, and cost is low.
Further improvement of the present invention is; The step-up/down circuit of said direct current rectification module comprises: battery V1, the positive pole of battery V1 are connected to switch SW 3 and inductance L 2, and the negative pole of battery V1 is connected to switch SW 5 and inductance L 3; The two ends of switch SW 3 and switch SW 5 are parallel with capacitor C 5; Inductance L 2 is connected in the mid point of transistor Q3 and transistor Q6, and inductance L 3 is connected in the mid point of transistor Q6 and transistor Q5, transistor Q3, transistor Q6 and transistor Q5 serial connection.
Transistor Q3 one end is connected to inductance L 2 and transistor Q6, and the other end is connected to the transistor/FET Q1 of AC rectification module; Transistor Q5 one end is connected to inductance L 3 and transistor Q6, and the other end is connected to the transistor/FET Q2 of AC rectification module; Said battery V1 realizes the direct current rectification through switch and LC filtering, and then realizes boosting and charging the counterbalance effect of promotion positive and negative busbar of battery.
Beneficial effect of the present invention is, said AC rectification module and balance module reuse balance brachium pontis, compared with prior art; Only need be through increasing the balance that a diverter switch just can realize the multiplexing and positive and negative busbar of circuit; Different with sequential at the different mode period control method, said different mode is Alternating Current Power Supply pattern or direct current supply pattern, and then has realized the balance of the positive and negative busbar of dual power supply system well; Volume is little; Cost is low, can guarantee the performance of dual power supply system, improves its stability.High-power and the higher dual power supply system of reliability requirement during the present invention is particularly suitable for.
Description of drawings
Fig. 1 is that the circuit of the embodiment of the invention 1 connects sketch map;
Fig. 2 is that the circuit of the Alternating Current Power Supply pattern of the embodiment of the invention 1 connects sketch map;
Fig. 3 is that the circuit of the direct current supply pattern of the embodiment of the invention 1 connects sketch map;
Fig. 4 is that three of the embodiment of the invention 6 is advanced the dual power supply system circuit that singly goes out and connected sketch map;
Fig. 5 is that three of the embodiment of the invention 6 is advanced the three dual power supply system circuit that go out and connected sketch map.
Embodiment
Below in conjunction with accompanying drawing, more excellent embodiment of the present invention is done further detailed description.
Embodiment 1:
To shown in Figure 3, this example provides a kind of dual power supply system with balance brachium pontis 201, comprising like Fig. 1:
Be used to realize the AC power 1 of Alternating Current Power Supply;
AC rectification module 2, said AC rectification module 2 is connected to AC power 1 through switch SW 1, and said AC rectification module 2 realizes exchanging the rectification of input and boosting through the biphase rectification circuit of ac/dc;
Direct current rectification module 3, said direct current rectification module 3 is connected with AC rectification module 2, and said direct current rectification module 3 is realized boosting of battery through two-way step-up/down circuit and is charged;
Be used to realize the inversion module 4 of AC/DC inversion output, said inverter circuit is connected with direct current rectification module 3; And,
Be used for when direct current supply, realizing the balance module 5 of bus balance, said balance module 5 is through switch SW 2 ground connection, and said balance module 5 is realized line sharing with AC rectification module 2.
Wherein, As shown in Figure 1; Said balance module 5 is realized line sharing with AC rectification module 2, and said line sharing is the multiplexing of balance brachium pontis 201, transistor or the FET of said balance brachium pontis 201 through being connected in series each other; Be used to realize the bridge arm balance of electric bridge, said FET is parallel with discrete diode; The biphase rectification circuit that said AC rectification module 2 is ac/dcs promptly passes through the rectifying circuit that balance brachium pontis 201 is realized two-way AC-DC; Said direct current rectification module 3 is also claimed the battery rectification circuit, realizes direct current supply through battery, is a two-way DC-DC circuit, said direct current rectification module 3 through two-way step-up/down circuit to realize boosting and charging of battery; The half-bridge circuit that said inversion module 4 is AC/DCs is to realize inversion output; Said balance module 5 through with AC rectification module 2 multiplexing balance brachium pontis 201; Be that balance module 5 is realized line sharing with AC rectification module 2; Said balance module 5 is through switch SW 2 ground connection; That is to say that said balance module 5 only increases the balance that a diverter switch has just realized the positive and negative busbar under the direct current supply pattern with the line sharing of AC rectification module 2.
This example is through line sharing, and promptly balance brachium pontis 201 multiplexing and then realized the positive and negative busbar balance of dual power supply system makes cost control very low, and volume is little, the dual power supply system of high-power in being applicable to, high reliability.
This routine mode of operation comprises Alternating Current Power Supply pattern and direct current supply pattern; As shown in Figure 2; Under the Alternating Current Power Supply pattern, but AC rectification module 2 is the half-bridge circuit of two-way flow, exchanges input and realizes exchanging the rectification of input and boosting through switch SW 1, inductance L 1, transistor/FET Q1 and transistor/FET Q2; But 2 two-way flows of AC rectification module have guaranteed the simplicity that balancing circuitry is realized, only need to increase the balance that a switch SW 2 can realize positive and negative busbar; Said direct current rectification module 3 is two-way flowable DC-DC circuit; It also is battery charger; Charge the battery through bus; Bus is formed the buck circuit through transistor/FET Q3, transistor/FET Q5, transistor/FET Q6, inductance L 2, inductance L 3, switch SW 3 and switch SW 5 when exchanging input, and promptly the step-down circuit charges the battery; Inverter circuit is the semi-bridge inversion circuit, promptly comprises transistor/FET Q8, transistor/FET Q9 and inductance L 5.
As shown in Figure 3; Under the direct current supply pattern; Be under the battery powered mode; The direct current rectifying circuit is formed the boos circuit through transistor/FET Q3, transistor/FET Q5, transistor/FET Q6, inductance L 2, inductance L 3, switch SW 3 and switch SW 5, promptly forms booster circuit and boosts to bus, realizes direct current rectification and charging circuit; AC rectification circuit when balance module 5 passes through balance brachium pontis 201 and exchanges input is realized line sharing; Be multiplexing inductance L 1, transistor/FET Q1 and transistor/FET Q2; Only need switch to center line to input, can realize the balance of bus through oxide-semiconductor control transistors/FET Q1 and transistor/break-make of FET Q2 through switch SW 1 and switch SW 2; Inverter circuit is the semi-bridge inversion circuit.Can find out AC rectification module 2, direct current rectification module 3, inversion module 4 and balance module 5 shared capacitor C 1 and capacitor C 2 by Fig. 2 and Fig. 3.
Compared with prior art; This routine AC rectification module 2 and balance module 5 multiplexing balance brachium pontis 201 only need be through increasing the balance that a diverter switch just can realize the multiplexing and positive and negative busbar of circuit, and be different with sequential at the different mode period control method; Said different mode is Alternating Current Power Supply pattern or direct current supply pattern; And then the balance of the positive and negative busbar of realization dual power supply system, said battery and AC power 1 alternately guarantee dual power supply, volume is little; Cost is low, and can guarantee the performance and the reliability of dual power supply system.High-power and the high dual power supply system of reliability requirement during this example is particularly suitable for.
The further improvement of this example is that the biphase rectification circuit of said AC rectification module 2 is the bi-directional half bridge rectifying circuit.Said bi-directional half bridge rectifying circuit is a semibridge system AC/DC biphase rectification circuit, i.e. semibridge system ac/dc biphase rectification circuit can be through only increasing a diverter switch on hardware; Can realize the switching of Alternating Current Power Supply pattern and direct current supply pattern, realize the bus balance under the direct current supply pattern through revising sequential, simple in structure; Cost is low, and volume is little, compared with prior art; Through the line sharing of balance brachium pontis 201, only just increased a diverter switch, just realized the balance of positive and negative busbar; Increase on cost is considerably less, and effect is remarkable, and circuit has obtained good optimization and improvement.
The further improvement of this example is that said bi-directional half bridge rectifying circuit comprises the transistor of serial connection or be parallel with the FET of discrete diode that said switch SW 1 and switch SW 2 are connected to the mid point of bi-directional half bridge rectifying circuit through inductance L 1.
Wherein, said transistor is preferably IGBT, i.e. insulated gate bipolar transistor; Said FET is MOSFET, when using MOSFET, needs parallelly connected discrete diode; Said switch SW 1 and switch SW 2 are connected to the mid point of bi-directional half bridge rectifying circuit through inductance L 1; It is switch SW 1 and switch SW 2 are connected to transistor or FET through inductance L 1 mid point; Can be when direct current supply; Make that the positive and negative busbar counterbalance effect of balance module 5 is more remarkable, can also promote to realize exchanging the rectification of input and boosting simultaneously.
Embodiment 2:
On the basis of embodiment 1, this routine said bi-directional half bridge rectifying circuit comprises the transistor of serial connection; Said AC power 1 is connected to inductance L 1 through switch SW 1, and inductance L 1 is connected to the mid point of transistor Q1 and transistor Q2 to realize exchanging the rectification of input.
Wherein, switch SW 1, inductance L 1, transistor Q1 and transistor Q2 form the AC rectification circuit of semibridge system, i.e. bi-directional half bridge rectifying circuit, and said bi-directional half bridge rectifying circuit carries out rectification to the interchange of input and boosts; Balance brachium pontis 201 circuits of switch SW 2, inductance L 1, transistor Q1 and transistor Q2 Compositional balance module 5 when the direct current supply pattern, promptly during battery powered mode, are realized the balance of busbar voltage through the break-make of oxide-semiconductor control transistors Q1 and transistor Q2; Switch SW 3, switch SW 5, inductance L 2, inductance L 3, transistor Q3, transistor Q5 and transistor Q6 form the boost/buck circuit; It is the step-up/down circuit; Form buck circuit (step-down circuit) during the Alternating Current Power Supply pattern to battery charge; Form boost circuit (booster circuit) during direct current supply pattern (battery input), bus is boosted; Transistor Q8 and transistor Q9 form the semi-bridge inversion circuit and realize the AC/DC inversion.
Said switch SW 1 closure, switch SW 2 is broken off, and then is in the Alternating Current Power Supply pattern; Said switch SW 1 is broken off; Switch SW 2 closures then are in the direct current supply pattern, further adopt above-mentioned technical characterictic; This example can exchange the switching of input and direct current input through diverter switch and then Rapid Realization; Realized positive and negative busbar balance cheaply through line sharing simultaneously, said line sharing is that the balance brachium pontis 201 of half-bridge rectifying circuit and balance module 5 of AC rectification module 2 is multiplexing, simple in structure; Volume is little; On this basis, the half-bridge rectifying circuit of said AC rectification module 2, the balance brachium pontis 201 of balance module 5 and direct current rectification module 3 step-up/down circuits all adopt transistor to realize, further promote the quality and the stability of product again.
Embodiment 3:
On the basis of embodiment 1, this routine said bi-directional half bridge rectifying circuit comprises the FET of serial connection, and said FET is parallel with discrete diode; Said AC power 1 is connected to inductance L 1 through switch SW 1, and inductance L 1 is connected to the mid point of FET Q1 and FET Q2 to realize exchanging the rectification of input.
Wherein, switch SW 1, inductance L 1, FET Q1 and FET Q2 form the AC rectification circuit of semibridge system, i.e. bi-directional half bridge rectifying circuit, and said bi-directional half bridge rectifying circuit carries out rectification to the interchange of input and boosts; Balance brachium pontis 201 circuits of switch SW 2, inductance L 1, FET Q1 and FET Q2 Compositional balance module 5; When the direct current supply pattern; When being battery powered mode, realize the balance of busbar voltage through the break-make of control FET Q1 and FET Q2; Switch SW 3, switch SW 5, inductance L 2, inductance L 3, FET Q3, FET Q5 and FET Q6 form the boost/buck circuit; It is the step-up/down circuit; Form buck circuit (step-down circuit) during the Alternating Current Power Supply pattern to battery charge; Form boost circuit (booster circuit) during direct current supply pattern (battery input), bus is boosted; FET Q8 and FET Q9 form the semi-bridge inversion circuit and realize the AC/DC inversion.
This example can exchange the switching of input and direct current input through diverter switch and then Rapid Realization; Realized positive and negative busbar balance cheaply through line sharing simultaneously; Simple in structure, volume is little, on this basis; The half-bridge rectifying circuit of said AC rectification module 2, the balance brachium pontis 201 of balance module 5 and direct current rectification module 3 step-up/down circuits all adopt FET to realize, further promote the quality and the stability of product.
The further improvement of this example is, inductance L 1 is connected to the positive pole of AC power 1, the minus earth of AC power 1 through switch SW 1; Inductance L 1 is through switch SW 2 ground connection.Through the switching of switch SW 1 and switch SW 2, can the Rapid Realization Alternating Current Power Supply and the switching of direct current supply, and then realized charging the battery through bus under the Alternating Current Power Supply pattern; Under the direct current supply pattern,, realize that through direct current rectification module 3 direct current rectifications and bus boost through the balance of balance brachium pontis 201 realization positive and negative busbars.
Embodiment 4:
On the basis of embodiment 1, this example is under the Alternating Current Power Supply pattern, and said direct current rectification module 3 charges the battery through the step-down circuit; Under the direct current supply pattern, said direct current rectification module 3 boosts to bus through booster circuit.Said direct current rectification module 3 is realized the step-down charging and the power supply of boosting respectively under the various power pattern, and then has saved the quantity of components and parts, and circuit is rationally effective.
The further improvement of this example is; The step-up/down circuit of said direct current rectification module 3 comprises: battery V1; The positive pole of battery V1 is connected to switch SW 3 and inductance L 2, and the negative pole of battery V1 is connected to switch SW 5 and inductance L 3, and the two ends of switch SW 3 and switch SW 5 are parallel with capacitor C 5; Inductance L 2 is connected in the mid point of FET Q3 and FET Q6, and inductance L 3 is connected in the mid point of FET Q6 and FET Q5; Wherein, FET Q3, FET Q6 and FET Q5 are connected in series and are parallel with discrete diode each other.
Wherein, FET Q3 one end is connected to inductance L 2 and FET Q6, and the other end is connected to the transistor/FET Q1 of AC rectification module 2; FET Q5 one end is connected to inductance L 3 and FET Q6, and the other end is connected to the transistor/FET Q2 of AC rectification module 2; Said battery V1 realizes the direct current rectification through switch and LC filtering, and then the boosting and charge of realization battery, and its advantage is that this example is simple and reasonable, the bus good balance effect, and cost is low.
This example also is applicable to embodiment 2 and embodiment 3.
Embodiment 5:
Different with embodiment 4 is; The step-up/down circuit of this routine said direct current rectification module 3 comprises: battery V1, the positive pole of battery V1 are connected to switch SW 3 and inductance L 2, and the negative pole of battery V1 is connected to switch SW 5 and inductance L 3; The two ends of switch SW 3 and switch SW 5 are parallel with capacitor C 5; Inductance L 2 is connected in the mid point of transistor Q3 and transistor Q6, and inductance L 3 is connected in the mid point of transistor Q6 and transistor Q5, transistor Q3, transistor Q6 and transistor Q5 serial connection.
Transistor Q3 one end is connected to inductance L 2 and transistor Q6, and the other end is connected to the transistor/FET Q1 of AC rectification module 2; Transistor Q5 one end is connected to inductance L 3 and transistor Q6, and the other end is connected to the transistor/FET Q2 of AC rectification module 2; Said battery V1 realizes the direct current rectification through switch and LC filtering, and then realizes boosting and charging the counterbalance effect of promotion positive and negative busbar of battery.
This routine beneficial effect is, said AC rectification module 2 and balance module 5 multiplexing balance brachium pontis 201, compared with prior art; Only need be through increasing the balance that a diverter switch just can realize the multiplexing and positive and negative busbar of circuit; Different with sequential at the different mode period control method, said different mode is Alternating Current Power Supply pattern or direct current supply pattern, and then has realized the balance of the positive and negative busbar of dual power supply system well; Volume is little; Cost is low, can guarantee the performance of dual power supply system, improves its stability.High-power and the higher dual power supply system of reliability requirement during this example is particularly suitable for.
The AC power 1 of above embodiment 1 to embodiment 5 is the single phase alternating current (A.C.) input, is called for short the dual power supply system that singly advances singly to go out, powerful dual power supply system in being applicable to.Through, dual power supply system of the present invention also can be supported heterogeneous interchange input.
Embodiment 6:
As shown in Figure 4, on the basis of embodiment 1, this example further provides three to advance the dual power supply system that singly goes out; Its operation principle is with embodiment 1; Difference is to exchange and is input as the three-phase input, the direct current input, and promptly battery is input as many brachium pontis parallel connection inputs; Like the DC parallel input of three brachium pontis, this example also can realize the parallel connection input with single brachium pontis or doube bridge arm according to concrete design requirement; Inversion is output as single-phase output.
As shown in Figure 5, on the basis of embodiment 1, this example also further provides three to advance three dual power supply systems that go out; Its operation principle is with embodiment 1, and difference is to exchange and is input as the three-phase input, and three-phase is exported; Straight input; Be that battery is input as many brachium pontis parallel connection inputs, like the DC parallel input of three brachium pontis, this example also can be according to concrete design requirement with single brachium pontis or doube bridge arm parallel connection input; Inversion is output as three-phase output.
Above content is to combine concrete preferred implementation to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to these explanations.For the those of ordinary skill of technical field under the present invention, under the prerequisite that does not break away from the present invention's design, can also make some simple deduction or replace, all should be regarded as belonging to protection scope of the present invention.
Claims (10)
1. the dual power supply system with the balance brachium pontis is characterized in that, comprising:
Be used to realize the AC power of Alternating Current Power Supply;
The AC rectification module, said AC rectification module is connected to AC power through switch SW 1, and said AC rectification module realizes exchanging the rectification of input and boosting through the biphase rectification circuit of ac/dc;
The direct current rectification module, said direct current rectification module is connected with the AC rectification module, and said direct current rectification module is realized boosting of battery through two-way step-up/down circuit and is charged;
Be used to realize the inversion module of AC/DC inversion output, said inverter circuit is connected with the direct current rectification module; And,
Be used for when direct current supply, realizing the balance module of bus balance, said balance module is through switch SW 2 ground connection, and said balance module and AC rectification module realize line sharing.
2. the dual power supply system of band balance brachium pontis according to claim 1 is characterized in that, the biphase rectification circuit of said AC rectification module is the bi-directional half bridge rectifying circuit.
3. the dual power supply system of band balance brachium pontis according to claim 2; It is characterized in that; Said bi-directional half bridge rectifying circuit comprises the transistor of serial connection or is parallel with the FET of discrete diode that said switch SW 1 and switch SW 2 are connected to the mid point of bi-directional half bridge rectifying circuit through inductance L 1.
4. the dual power supply system of band balance brachium pontis according to claim 3 is characterized in that said bi-directional half bridge rectifying circuit comprises the transistor of serial connection; Said AC power is connected to inductance L 1 through switch SW 1, and inductance L 1 is connected to the mid point of transistor Q1 and transistor Q2 to realize exchanging the rectification of input.
5. the dual power supply system of band balance brachium pontis according to claim 3 is characterized in that said bi-directional half bridge rectifying circuit comprises the FET of serial connection, and said FET is parallel with discrete diode; Said AC power is connected to inductance L 1 through switch SW 1, and inductance L 1 is connected to the mid point of FET Q1 and FET Q2 to realize exchanging the rectification of input.
6. according to the dual power supply system of any described band balance brachium pontis of claim 1 to 5, it is characterized in that inductance L 1 is connected to the positive pole of AC power, the minus earth of AC power through switch SW 1; Inductance L 1 is through switch SW 2 ground connection.
7. according to the dual power supply system of any described band balance brachium pontis of claim 1 to 5, it is characterized in that under the Alternating Current Power Supply pattern, said direct current rectification module charges the battery through the step-down circuit; Under the direct current supply pattern, said direct current rectification module boosts to bus through booster circuit.
8. the dual power supply system of band balance brachium pontis according to claim 7; It is characterized in that the step-up/down circuit of said direct current rectification module comprises: battery V1, the positive pole of battery V1 are connected to switch SW 3 and inductance L 2; The negative pole of battery V1 is connected to switch SW 5 and inductance L 3; The two ends of switch SW 3 and switch SW 5 are parallel with capacitor C 5, and inductance L 2 is connected in the mid point of FET Q3 and FET Q6, and inductance L 3 is connected in the mid point of FET Q6 and FET Q5; Wherein, FET Q3, FET Q6 and FET Q5 are connected in series and are parallel with discrete diode each other.
9. the dual power supply system of band balance brachium pontis according to claim 7; It is characterized in that; The step-up/down circuit of said direct current rectification module comprises: battery V1, the positive pole of battery V1 are connected to switch SW 3 and inductance L 2, and the negative pole of battery V1 is connected to switch SW 5 and inductance L 3; The two ends of switch SW 3 and switch SW 5 are parallel with capacitor C 5; Inductance L 2 is connected in the mid point of transistor Q3 and transistor Q6, and inductance L 3 is connected in the mid point of transistor Q6 and transistor Q5, transistor Q3, transistor Q6 and transistor Q5 serial connection.
10. the dual power supply system of band balance brachium pontis according to claim 9 is characterized in that, inductance L 1 is connected to the positive pole of AC power, the minus earth of AC power through switch SW 1; Inductance L 1 is through switch SW 2 ground connection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210155422.7A CN102710006B (en) | 2012-05-18 | 2012-05-18 | Double-power supply system with balance bridge arm |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210155422.7A CN102710006B (en) | 2012-05-18 | 2012-05-18 | Double-power supply system with balance bridge arm |
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| CN102710006B CN102710006B (en) | 2014-12-24 |
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| CN108695963A (en) * | 2017-03-30 | 2018-10-23 | 本田技研工业株式会社 | Generator of engine |
| CN114301291A (en) * | 2021-12-17 | 2022-04-08 | 科华数据股份有限公司 | DC converter and control method |
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| CN102710006B (en) | 2014-12-24 |
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