CN202679053U - A dual power supply system equipped with a balance bridge arm - Google Patents
A dual power supply system equipped with a balance bridge arm Download PDFInfo
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- CN202679053U CN202679053U CN 201220224997 CN201220224997U CN202679053U CN 202679053 U CN202679053 U CN 202679053U CN 201220224997 CN201220224997 CN 201220224997 CN 201220224997 U CN201220224997 U CN 201220224997U CN 202679053 U CN202679053 U CN 202679053U
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Abstract
The utility model provides a dual power supply system equipped with a balance bridge arm. The dual power supply system comprises an AC power supply, an AC rectifying module, a DC rectifying module, an inverter module, and a balance module. The AC rectifying module is connected with the AC power supply through a switch SW1 and achieves rectification and voltage boosting of an AC input through a bidirectional rectifying circuit. The DC rectifying module connected with the AC rectifying module is used for achieving voltage boosting and charging of a battery. The inverter module connected with the DC rectifying module is used for achieving inversion output. The balance module connected with ground through a switch SW2 is used for achieving bus balance when a DC power supply operates, and a multiplexing circuit is used by the balance module and the AC rectifying module. A multiplexing balance bridge arm is used by the AC rectifying module and the balance module so that the multiplexing circuit and the balance between the positive and the negative buses can be achieved just by applying one selector switch. Control method and timing sequence are different in different modes. The dual power supply system equipped with a balance bridge arm has characteristics of small size, low cost, and high reliability.
Description
Technical field
The utility model relates to a kind of dual power supply system, relates 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 namely do the consideration of bus balance, but like this, all can cause certain influence to performance and the reliability of complete machine, has reduced its quality and stability.
Summary of the invention
Technical problem to be solved in the utility model is that the dual power supply system that a kind of cost is low, volume is little need to be provided, and realizes the balance of bus.
To this, the utility model provides a kind of dual power supply system with the balance brachium pontis, comprising:
Be used for realizing the AC power of Alternating Current Power Supply;
The AC rectification module, described AC rectification module is connected to AC power by interrupteur SW 1, and described AC rectification module realizes exchanging the rectification of input and boosting by the biphase rectification circuit of ac/dc;
The direct current rectification module, described direct current rectification module is connected with the AC rectification module, and described direct current rectification module is realized boosting of battery by two-way step-up/down circuit and is charged;
Be used for realizing the inversion module of AC/DC inversion output, described inverter circuit is connected with the direct current rectification module; And,
Be used for realizing when direct current supply the balance module of bus balance, described balance module is by interrupteur SW 2 ground connection, and described balance module and AC rectification module realize line sharing.
Wherein, described balance module and AC rectification module realize line sharing, described line sharing is the multiplexing of balance brachium pontis, transistor or the field effect transistor of described balance brachium pontis by mutually being connected in series, be used for realizing the bridge arm balance of electric bridge, described field effect transistor is parallel with discrete diode, and described discrete diode is the discrete power device, has comprised semiconductor diode; The biphase rectification circuit that described AC rectification module is an ac/dc namely by 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; Described direct current rectification module also claims the battery rectification circuit, realize direct current supply by battery, be a two-way DC-DC circuit, be also referred to as two-way DC/DC circuit, described direct current rectification module by two-way step-up/down circuit to realize boosting and charging of battery; Described inversion module is used for realizing the inversion output of AC/DC, and be connected with the direct current rectification module, described inversion module can adopt the half-bridge circuit of AC/DC, and namely the semibridge system circuit of DC/AC can be realized by the semibridge system inverter line inversion output of AC/DC; Described balance module by with AC rectification module reuse balance brachium pontis, be that balance module and AC rectification module realize line sharing, described balance module is by interrupteur SW 2 ground connection, that is to say that the line sharing of described 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 utility model is by line sharing, i.e. balance brachium pontis multiplexing and then realize the positive and negative busbar balance of dual power supply system, so that cost is very low, volume is little, the dual power supply system of high-power in being highly suitable for, high reliability.
Mode of operation of the present utility model 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, the interchange input realizes the rectification that exchanges by interrupteur SW 1, inductance L 1, transistor/field effect transistor Q1 and transistor/field effect transistor Q2 and boosts, 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 an interrupteur SW 2 can realize positive and negative busbar; Described direct current rectification module is two-way flowable DC-DC circuit, it also is battery charger, charge the battery by bus, bus forms the buck circuit by transistor/field effect transistor Q3, transistor/field effect transistor Q5, transistor/field effect transistor Q6, inductance L 2, inductance L 3, interrupteur SW 3 and interrupteur SW 5 when exchanging input, and namely the step-down circuit charges the battery; Inverter circuit is the semi-bridge inversion circuit.
Under the direct current supply pattern, be under the battery powered mode, the direct current rectifying circuit forms the boos circuit by transistor/field effect transistor Q3, transistor/field effect transistor Q5, transistor/field effect transistor Q6, inductance L 2, inductance L 3, interrupteur SW 3 and interrupteur SW 5, namely 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/field effect transistor Q1 and transistor/field effect transistor Q2, only need to switch to center line to input by interrupteur SW 1 and interrupteur SW 2, can realize the balance of bus by the break-make of control transistor/field effect transistor Q1 and transistor/field effect transistor Q2; Inverter circuit is the semi-bridge inversion circuit.
Compared with prior art, the utility model AC rectification module and balance module reuse balance brachium pontis only need to just can be realized by increasing a diverter switch balance of the multiplexing and positive and negative busbar of circuit, and its control method is different with sequential when different mode; Described 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, described battery and AC power alternately guarantee dual power supply, and volume is little, cost is low, and can guarantee performance and the reliability of dual power supply system.High-power and the high dual power supply system of reliability requirement during the utility model is particularly suitable for.
Further improvement of the utility model is that the biphase rectification circuit of described AC rectification module is the bi-directional half bridge rectifying circuit.Described bi-directional half bridge rectifying circuit is semibridge system AC/DC biphase rectification circuit, it is semibridge system ac/dc biphase rectification circuit, can be by on hardware, only increasing a diverter switch, can realize the switching of Alternating Current Power Supply pattern and direct current supply pattern, by revising the bus balance under the sequential realization direct current supply pattern, simple in structure, cost is low, and volume is little, compared with prior art, line sharing by the balance brachium pontis, only just increased a diverter switch, just realized the balance of positive and negative busbar, the increase on cost is considerably less, effect is remarkable, and circuit has obtained good optimization and improvement.
Further improvement of the utility model is that described bi-directional half bridge rectifying circuit comprises the transistor of serial connection or be parallel with the field effect transistor of discrete diode that described interrupteur SW 1 and interrupteur SW 2 are connected to the mid point of bi-directional half bridge rectifying circuit by inductance L 1.
Wherein, described transistor is preferably IGBT, i.e. insulated gate bipolar transistor; Described field effect transistor is MOSFET, when using MOSFET, needs discrete diode in parallel; Described interrupteur SW 1 and interrupteur SW 2 are connected to the mid point of bi-directional half bridge rectifying circuit by inductance L 1, it is interrupteur SW 1 and interrupteur SW 2 are connected to transistor or field effect transistor by inductance L 1 mid point, can be when direct current supply, so 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 utility model is that described bi-directional half bridge rectifying circuit comprises the transistor of serial connection; Described AC power is connected to inductance L 1 by interrupteur 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, interrupteur 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 described bi-directional half bridge rectifying circuit carries out rectification to the interchange of input and boosts; The balance brachium pontis circuit of interrupteur SW 2, inductance L 1, transistor Q1 and transistor Q2 Compositional balance module when the direct current supply pattern, namely during battery powered mode, is realized the balance of busbar voltage by the break-make of control transistor Q1 and transistor Q2; Interrupteur SW 3, interrupteur 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, forming buck circuit (step-down circuit) during the Alternating Current Power Supply pattern charges to battery, 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.
Described interrupteur SW 1 closure, interrupteur SW 2 disconnects, and then is in the Alternating Current Power Supply pattern; Described interrupteur SW 1 disconnects, interrupteur SW 2 closures, then be in the direct current supply pattern, further adopt above-mentioned technical characterictic, the utility model can be by diverter switch and then is realized that fast interchange is inputted and the switching of direct current input, realized cheaply positive and negative busbar balance by line sharing simultaneously, described line sharing is that the balance brachium pontis of the Half bridge rectifier circuit of AC rectification module and balance module is multiplexing, simple in structure, volume is little, on this basis, the Half bridge rectifier circuit of described 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 quality and the stability of product again.
Further improvement of the utility model is that described bi-directional half bridge rectifying circuit comprises the field effect transistor of serial connection, and described field effect transistor is parallel with discrete diode; Described AC power is connected to inductance L 1 by interrupteur SW 1, and inductance L 1 is connected to the mid point of field effect transistor Q1 and field effect transistor Q2 to realize exchanging the rectification of input.
Wherein, interrupteur SW 1, inductance L 1, field effect transistor Q1 and field effect transistor Q2 form the AC rectification circuit of semibridge system, i.e. bi-directional half bridge rectifying circuit, and described bi-directional half bridge rectifying circuit carries out rectification to the interchange of input and boosts; The balance brachium pontis circuit of interrupteur SW 2, inductance L 1, field effect transistor Q1 and field effect transistor Q2 Compositional balance module when the direct current supply pattern, namely during battery powered mode, is realized the balance of busbar voltage by the break-make of control field effect transistor Q1 and field effect transistor Q2; Interrupteur SW 3, interrupteur SW 5, inductance L 2, inductance L 3, field effect transistor Q3, field effect transistor Q5 and field effect transistor Q6 form the boost/buck circuit, it is the step-up/down circuit, forming buck circuit (step-down circuit) during the Alternating Current Power Supply pattern charges to battery, form boost circuit (booster circuit) during direct current supply pattern (battery input), bus is boosted; Field effect transistor Q8 and field effect transistor Q9 form the semi-bridge inversion circuit and realize the AC/DC inversion.
The utility model can be by diverter switch and then is realized that fast interchange is inputted and the switching of direct current input, realized cheaply positive and negative busbar balance by line sharing simultaneously, simple in structure, volume is little, on this basis, the Half bridge rectifier circuit of described AC rectification module, the balance brachium pontis of balance module and direct current rectification module step-up/down circuit all adopt field effect transistor to realize, further promote quality and the stability of product.
Further improvement of the utility model is, inductance L 1 is connected to the positive pole of AC power, the minus earth of AC power by interrupteur SW 1; Inductance L 1 is by interrupteur SW 2 ground connection.By the switching of interrupteur SW 1 and interrupteur SW 2, can realize fast the switching of Alternating Current Power Supply and direct current supply, and then realize charging the battery by bus under the Alternating Current Power Supply pattern; Under the direct current supply pattern, by the balance of balance brachium pontis realization positive and negative busbar, realize that by the direct current rectification module direct current rectification and bus boost.
Further improvement of the utility model is that under the Alternating Current Power Supply pattern, described direct current rectification module charges the battery by the step-down circuit; Under the direct current supply pattern, described direct current rectification module boosts to bus by booster circuit.Described direct current rectification module is realized respectively step-down charging and the power supply of boosting under different powering modes, and then has saved the quantity of components and parts, and circuit is rationally effective.
Further improvement of the utility model is, the step-up/down circuit of described direct current rectification module comprises: battery V1, the positive pole of battery V1 is connected to interrupteur SW 3 and inductance L 2, the negative pole of battery V1 is connected to interrupteur SW 5 and inductance L 3, the two ends of interrupteur SW 3 and interrupteur SW 5 are parallel with capacitor C 5, inductance L 2 is connected in the mid point of field effect transistor Q3 and field effect transistor Q6, and inductance L 3 is connected in the mid point of field effect transistor Q6 and field effect transistor Q5; Wherein, field effect transistor Q3, field effect transistor Q6 and field effect transistor Q5 are connected in series and are parallel with discrete diode mutually.
Wherein, field effect transistor Q3 one end is connected to inductance L 2 and field effect transistor Q6, and the other end is connected to the transistor of AC rectification module/field effect transistor Q1; Field effect transistor Q5 one end is connected to inductance L 3 and field effect transistor Q6, and the other end is connected to the transistor of AC rectification module/field effect transistor Q2; Described battery V1 realizes the direct current rectification by switch and LC filtering, and then realizes boosting and charging of battery, and its advantage is that the utility model is simple and reasonable, the bus good balance effect, and cost is low.
Further improvement of the utility model is, the step-up/down circuit of described direct current rectification module comprises: battery V1, the positive pole of battery V1 is connected to interrupteur SW 3 and inductance L 2, the negative pole of battery V1 is connected to interrupteur SW 5 and inductance L 3, the two ends of interrupteur SW 3 and interrupteur 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 of AC rectification module/field effect transistor Q1; Transistor Q5 one end is connected to inductance L 3 and transistor Q6, and the other end is connected to the transistor of AC rectification module/field effect transistor Q2; Described battery V1 realizes the direct current rectification by switch and LC filtering, and then realizes boosting and charging of battery, promotes the counterbalance effect of positive and negative busbar.
The beneficial effects of the utility model are, described AC rectification module and balance module reuse balance brachium pontis, compared with prior art, only need to just can realize by increasing a diverter switch balance of the multiplexing and positive and negative busbar of circuit, different with sequential at the different mode period control method, described different mode is Alternating Current Power Supply pattern or direct current supply pattern, and then realized well the balance of the positive and negative busbar of dual power supply system, volume is little, cost is low, can guarantee the performance of dual power supply system, improve its stability.High-power and the higher dual power supply system of reliability requirement during the utility model is particularly suitable for.
Description of drawings
Fig. 1 is the circuit connection diagram of the embodiment of the invention 1;
Fig. 2 is the circuit connection diagram of the Alternating Current Power Supply pattern of the embodiment of the invention 1;
Fig. 3 is the circuit connection diagram of the direct current supply pattern of the embodiment of the invention 1;
Fig. 4 is that three of the embodiment of the invention 6 is advanced the dual power supply system circuit connection diagram that singly goes out;
Fig. 5 is that three of the embodiment of the invention 6 is advanced the three dual power supply system circuit connection diagrams that go out.
Embodiment
Below in conjunction with accompanying drawing, more excellent embodiment of the present utility model is described in further detail.
Embodiment 1:
As shown in Figure 1 to Figure 3, this example provides a kind of dual power supply system with balance brachium pontis 201, comprising:
Be used for realizing the AC power 1 of Alternating Current Power Supply;
Direct current rectification module 3, described direct current rectification module 3 is connected with AC rectification module 2, and described direct current rectification module 3 is realized boosting of battery by two-way step-up/down circuit and is charged;
Be used for realizing the inversion module 4 of AC/DC inversion output, described inverter circuit is connected with direct current rectification module 3; And,
Be used for realizing when direct current supply the balance module 5 of bus balance, described balance module 5 is by interrupteur SW 2 ground connection, and described balance module 5 is realized line sharing with AC rectification module 2.
Wherein, as shown in Figure 1, described balance module 5 is realized line sharing with AC rectification module 2, described line sharing is the multiplexing of balance brachium pontis 201, transistor or the field effect transistor of described balance brachium pontis 201 by mutually being connected in series, be used for realizing the bridge arm balance of electric bridge, described field effect transistor is parallel with discrete diode; The biphase rectification circuit that described AC rectification module 2 is ac/dcs namely passes through the rectifying circuit that balance brachium pontis 201 is realized two-way AC-DC; Described direct current rectification module 3 also claims the battery rectification circuit, realizes direct current supply by battery, is a two-way DC-DC circuit, described direct current rectification module 3 by two-way step-up/down circuit to realize boosting and charging of battery; The half-bridge circuit that described inversion module 4 is AC/DCs is to realize inversion output; Described balance module 5 by with AC rectification module 2 multiplexing balance brachium pontis 201, be that balance module 5 is realized line sharing with AC rectification module 2, described balance module 5 is by interrupteur SW 2 ground connection, that is to say that described 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 by line sharing, i.e. balance brachium pontis 201 multiplexing and then realized the positive and negative busbar balance of dual power supply system, so that cost control is very low, 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, exchanging input realizes exchanging the rectification of input and boosting by interrupteur SW 1, inductance L 1, transistor/field effect transistor Q1 and transistor/field effect transistor 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 an interrupteur SW 2 can realize positive and negative busbar; Described direct current rectification module 3 is two-way flowable DC-DC circuit, it also is battery charger, charge the battery by bus, bus forms the buck circuit by transistor/field effect transistor Q3, transistor/field effect transistor Q5, transistor/field effect transistor Q6, inductance L 2, inductance L 3, interrupteur SW 3 and interrupteur SW 5 when exchanging input, and namely the step-down circuit charges the battery; Inverter circuit is the semi-bridge inversion circuit, namely comprises transistor/field effect transistor Q8, transistor/field effect transistor 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 forms the boos circuit by transistor/field effect transistor Q3, transistor/field effect transistor Q5, transistor/field effect transistor Q6, inductance L 2, inductance L 3, interrupteur SW 3 and interrupteur SW 5, namely form booster circuit and boost to bus, realize 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/field effect transistor Q1 and transistor/field effect transistor Q2, only need to switch to center line to input by interrupteur SW 1 and interrupteur SW 2, can realize the balance of bus by the break-make of control transistor/field effect transistor Q1 and transistor/field effect transistor Q2; Inverter circuit is the semi-bridge inversion circuit.Can find out that by Fig. 2 and Fig. 3 AC rectification module 2, direct current rectification module 3, inversion module 4 and balance module 5 share capacitor C 1 and capacitor C 2.
Compared with prior art, this routine AC rectification module 2 and balance module 5 multiplexing balance brachium pontis 201, only need to just can realize by increasing a diverter switch balance of the multiplexing and positive and negative busbar of circuit, different with sequential at the different mode period control method, described 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, described battery and AC power 1 alternately guarantee dual power supply, volume is little, cost is low, and can guarantee 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 described AC rectification module 2 is the bi-directional half bridge rectifying circuit.Described bi-directional half bridge rectifying circuit is semibridge system AC/DC biphase rectification circuit, it is semibridge system ac/dc biphase rectification circuit, can be by on hardware, only increasing a diverter switch, can realize the switching of Alternating Current Power Supply pattern and direct current supply pattern, by revising the bus balance under the sequential realization direct current supply pattern, simple in structure, cost is low, and volume is little, compared with prior art, line sharing by balance brachium pontis 201, only just increased a diverter switch, just realized the balance of positive and negative busbar, the increase on cost is considerably less, effect is remarkable, and circuit has obtained good optimization and improvement.
The further improvement of this example is that described bi-directional half bridge rectifying circuit comprises the transistor of serial connection or be parallel with the field effect transistor of discrete diode that described interrupteur SW 1 and interrupteur SW 2 are connected to the mid point of bi-directional half bridge rectifying circuit by inductance L 1.
Wherein, described transistor is preferably IGBT, i.e. insulated gate bipolar transistor; Described field effect transistor is MOSFET, when using MOSFET, needs discrete diode in parallel; Described interrupteur SW 1 and interrupteur SW 2 are connected to the mid point of bi-directional half bridge rectifying circuit by inductance L 1, it is interrupteur SW 1 and interrupteur SW 2 are connected to transistor or field effect transistor by inductance L 1 mid point, can be when direct current supply, so 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 described bi-directional half bridge rectifying circuit comprises the transistor of serial connection; Described AC power 1 is connected to inductance L 1 by interrupteur 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, interrupteur 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 described bi-directional half bridge rectifying circuit carries out rectification to the interchange of input and boosts; Balance brachium pontis 201 circuits of interrupteur SW 2, inductance L 1, transistor Q1 and transistor Q2 Compositional balance module 5 when the direct current supply pattern, namely during battery powered mode, are realized the balance of busbar voltage by the break-make of control transistor Q1 and transistor Q2; Interrupteur SW 3, interrupteur 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, forming buck circuit (step-down circuit) during the Alternating Current Power Supply pattern charges to battery, 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.
Described interrupteur SW 1 closure, interrupteur SW 2 disconnects, and then is in the Alternating Current Power Supply pattern; Described interrupteur SW 1 disconnects, interrupteur SW 2 closures, then be in the direct current supply pattern, further adopt above-mentioned technical characterictic, this example can be by diverter switch and then is realized that fast interchange is inputted and the switching of direct current input, realized cheaply positive and negative busbar balance by line sharing simultaneously, described line sharing is that the balance brachium pontis 201 of the Half bridge rectifier circuit of AC rectification module 2 and balance module 5 is multiplexing, simple in structure, volume is little, on this basis, the Half bridge rectifier circuit of described 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 quality and the stability of product again.
Embodiment 3:
On the basis of embodiment 1, this routine described bi-directional half bridge rectifying circuit comprises the field effect transistor of serial connection, and described field effect transistor is parallel with discrete diode; Described AC power 1 is connected to inductance L 1 by interrupteur SW 1, and inductance L 1 is connected to the mid point of field effect transistor Q1 and field effect transistor Q2 to realize exchanging the rectification of input.
Wherein, interrupteur SW 1, inductance L 1, field effect transistor Q1 and field effect transistor Q2 form the AC rectification circuit of semibridge system, i.e. bi-directional half bridge rectifying circuit, and described bi-directional half bridge rectifying circuit carries out rectification to the interchange of input and boosts; Balance brachium pontis 201 circuits of interrupteur SW 2, inductance L 1, field effect transistor Q1 and field effect transistor Q2 Compositional balance module 5, when the direct current supply pattern, when being battery powered mode, realize the balance of busbar voltage by the break-make of control field effect transistor Q1 and field effect transistor Q2; Interrupteur SW 3, interrupteur SW 5, inductance L 2, inductance L 3, field effect transistor Q3, field effect transistor Q5 and field effect transistor Q6 form the boost/buck circuit, it is the step-up/down circuit, forming buck circuit (step-down circuit) during the Alternating Current Power Supply pattern charges to battery, form boost circuit (booster circuit) during direct current supply pattern (battery input), bus is boosted; Field effect transistor Q8 and field effect transistor Q9 form the semi-bridge inversion circuit and realize the AC/DC inversion.
This example can be by diverter switch and then is realized that fast interchange is inputted and the switching of direct current input, realized cheaply positive and negative busbar balance by line sharing simultaneously, simple in structure, volume is little, on this basis, the Half bridge rectifier circuit of described 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 field effect transistor to realize, further promote 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 by interrupteur SW 1; Inductance L 1 is by interrupteur SW 2 ground connection.By the switching of interrupteur SW 1 and interrupteur SW 2, can realize fast the switching of Alternating Current Power Supply and direct current supply, and then realize charging the battery by bus under the Alternating Current Power Supply pattern; Under the direct current supply pattern, by the balance of balance brachium pontis 201 realization positive and negative busbars, realize that by direct current rectification module 3 direct current rectifications and bus boost.
Embodiment 4:
On the basis of embodiment 1, this example is under the Alternating Current Power Supply pattern, and described direct current rectification module 3 charges the battery by the step-down circuit; Under the direct current supply pattern, described direct current rectification module 3 boosts to bus by booster circuit.Described direct current rectification module 3 is realized respectively step-down charging and the power supply of boosting under different powering modes, 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 described direct current rectification module 3 comprises: battery V1, the positive pole of battery V1 is connected to interrupteur SW 3 and inductance L 2, the negative pole of battery V1 is connected to interrupteur SW 5 and inductance L 3, the two ends of interrupteur SW 3 and interrupteur SW 5 are parallel with capacitor C 5, inductance L 2 is connected in the mid point of field effect transistor Q3 and field effect transistor Q6, and inductance L 3 is connected in the mid point of field effect transistor Q6 and field effect transistor Q5; Wherein, field effect transistor Q3, field effect transistor Q6 and field effect transistor Q5 are connected in series and are parallel with discrete diode mutually.
Wherein, field effect transistor Q3 one end is connected to inductance L 2 and field effect transistor Q6, and the other end is connected to the transistor of AC rectification module 2/field effect transistor Q1; Field effect transistor Q5 one end is connected to inductance L 3 and field effect transistor Q6, and the other end is connected to the transistor of AC rectification module 2/field effect transistor Q2; Described battery V1 realizes the direct current rectification by switch and LC filtering, and then realizes boosting and charging of 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:
As different from Example 4, the step-up/down circuit of this routine described direct current rectification module 3 comprises: battery V1, the positive pole of battery V1 is connected to interrupteur SW 3 and inductance L 2, the negative pole of battery V1 is connected to interrupteur SW 5 and inductance L 3, the two ends of interrupteur SW 3 and interrupteur 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 of AC rectification module 2/field effect transistor Q1; Transistor Q5 one end is connected to inductance L 3 and transistor Q6, and the other end is connected to the transistor of AC rectification module 2/field effect transistor Q2; Described battery V1 realizes the direct current rectification by switch and LC filtering, and then realizes boosting and charging of battery, promotes the counterbalance effect of positive and negative busbar.
This routine beneficial effect is, described AC rectification module 2 and balance module 5 multiplexing balance brachium pontis 201, compared with prior art, only need to just can realize by increasing a diverter switch balance of the multiplexing and positive and negative busbar of circuit, different with sequential at the different mode period control method, described different mode is Alternating Current Power Supply pattern or direct current supply pattern, and then realized well the balance of the positive and negative busbar of dual power supply system, volume is little, cost is low, can guarantee the performance of dual power supply system, improve 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.By, dual power supply system described in the utility model 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 namely battery is input as the input in parallel of many brachium pontis, such as the DC parallel input of three brachium pontis, this example also can realize input in parallel with single brachium pontis or doube bridge arm according to the specific design demand; 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 the input in parallel of many brachium pontis, such as the DC parallel input of three brachium pontis, this example also can be inputted with single brachium pontis or the parallel connection of doube bridge arm according to the specific design demand; Inversion is output as three-phase output.
The embodiment of the above is preferred embodiments of the present utility model; be not to limit implementation scope of the present utility model with this; scope of the present utility model comprises and is not limited to this embodiment that the equivalence that all shapes according to the utility model, structure are done changes all in protection range of the present utility model.
Claims (10)
1. the dual power supply system with the balance brachium pontis is characterized in that, comprising:
Be used for realizing the AC power of Alternating Current Power Supply;
The AC rectification module, described AC rectification module is connected to AC power by interrupteur SW 1, and described AC rectification module realizes exchanging the rectification of input and boosting by the biphase rectification circuit of ac/dc;
The direct current rectification module, described direct current rectification module is connected with the AC rectification module, and described direct current rectification module is realized boosting of battery by two-way step-up/down circuit and is charged;
Be used for realizing the inversion module of AC/DC inversion output, described inverter circuit is connected with the direct current rectification module; And,
Be used for realizing when direct current supply the balance module of bus balance, described balance module is by interrupteur SW 2 ground connection, and described balance module and AC rectification module realize line sharing.
2. the dual power supply system with the balance brachium pontis according to claim 1 is characterized in that, the biphase rectification circuit of described AC rectification module is the bi-directional half bridge rectifying circuit.
3. the dual power supply system with the balance brachium pontis according to claim 2, it is characterized in that, described bi-directional half bridge rectifying circuit comprises the transistor of serial connection or is parallel with the field effect transistor of discrete diode that described interrupteur SW 1 and interrupteur SW 2 are connected to the mid point of bi-directional half bridge rectifying circuit by inductance L 1.
4. the dual power supply system with the balance brachium pontis according to claim 3 is characterized in that, described bi-directional half bridge rectifying circuit comprises the transistor of serial connection; Described AC power is connected to inductance L 1 by interrupteur 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 with the balance brachium pontis according to claim 3 is characterized in that, described bi-directional half bridge rectifying circuit comprises the field effect transistor of serial connection, and described field effect transistor is parallel with discrete diode; Described AC power is connected to inductance L 1 by interrupteur SW 1, and inductance L 1 is connected to the mid point of field effect transistor Q1 and field effect transistor Q2 to realize exchanging the rectification of input.
6. according to claim 1 to the described dual power supply system with the balance brachium pontis of 5 any one, it is characterized in that inductance L 1 is connected to the positive pole of AC power, the minus earth of AC power by interrupteur SW 1; Inductance L 1 is by interrupteur SW 2 ground connection.
7. according to claim 1 to the described dual power supply system with the balance brachium pontis of 5 any one, it is characterized in that under the Alternating Current Power Supply pattern, described direct current rectification module charges the battery by the step-down circuit; Under the direct current supply pattern, described direct current rectification module boosts to bus by booster circuit.
8. the dual power supply system with the balance brachium pontis according to claim 7, it is characterized in that, the step-up/down circuit of described direct current rectification module comprises: battery V1, the positive pole of battery V1 is connected to interrupteur SW 3 and inductance L 2, the negative pole of battery V1 is connected to interrupteur SW 5 and inductance L 3, the two ends of interrupteur SW 3 and interrupteur SW 5 are parallel with capacitor C 5, and inductance L 2 is connected in the mid point of field effect transistor Q3 and field effect transistor Q6, and inductance L 3 is connected in the mid point of field effect transistor Q6 and field effect transistor Q5; Wherein, field effect transistor Q3, field effect transistor Q6 and field effect transistor Q5 are connected in series and are parallel with discrete diode mutually.
9. the dual power supply system with the balance brachium pontis according to claim 7, it is characterized in that, the step-up/down circuit of described direct current rectification module comprises: battery V1, the positive pole of battery V1 is connected to interrupteur SW 3 and inductance L 2, the negative pole of battery V1 is connected to interrupteur SW 5 and inductance L 3, the two ends of interrupteur SW 3 and interrupteur SW 5 are parallel with capacitor C 5, inductance L 2 is connected in the mid point of transistor Q3 and transistor Q6, 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 with the 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 by interrupteur SW 1; Inductance L 1 is by interrupteur SW 2 ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220224997 CN202679053U (en) | 2012-05-18 | 2012-05-18 | A dual power supply system equipped with a balance bridge arm |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220224997 CN202679053U (en) | 2012-05-18 | 2012-05-18 | A dual power supply system equipped with a balance bridge arm |
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| CN202679053U true CN202679053U (en) | 2013-01-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710006A (en) * | 2012-05-18 | 2012-10-03 | 深圳市健网科技有限公司 | Double-power supply system with balance bridge arm |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710006A (en) * | 2012-05-18 | 2012-10-03 | 深圳市健网科技有限公司 | Double-power supply system with balance bridge arm |
| CN102710006B (en) * | 2012-05-18 | 2014-12-24 | 深圳市健网科技有限公司 | Double-power supply system with balance bridge arm |
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Granted publication date: 20130116 Termination date: 20180518 |