CN202679055U - A dual power supply system based on a balance bridge arm - Google Patents
A dual power supply system based on a balance bridge arm Download PDFInfo
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- CN202679055U CN202679055U CN 201220225016 CN201220225016U CN202679055U CN 202679055 U CN202679055 U CN 202679055U CN 201220225016 CN201220225016 CN 201220225016 CN 201220225016 U CN201220225016 U CN 201220225016U CN 202679055 U CN202679055 U CN 202679055U
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Abstract
The utility model provides a dual power supply system based on a balance bridge arm. The dual power supply system comprises an AC power supply, a rectifying module, a storage battery, and a balance module. The AC power supply provides AC power. The rectifying module connected with the AC power supply comprises an AC rectifying unit, a DC rectifying unit, and a first switch unit. A multiplexing rectifying circuit is used by the AC rectifying unit and the DC rectifying unit and switchover between AC rectification and DC rectification is achieved by the first switch unit. The storage battery connected with the rectifying module is used for achieving DC power supply. The balance module connected with the rectifying module and the storage battery comprises a balance unit, a charging unit, and a second switch unit which is a bidirectional selector switch. A multiplexing balance circuit is used by the balance unit and the charging unit. Switchover between the balance unit and the charging unit and balance between positive and negative buses are achieved by the bidirectional selector switch. The balance between positive and negative buses is achieved by the multiplexing balance circuit and charging circuit. The dual power supply system based on a balance bridge arm has characteristics of small size, low cost, and high performance and reliability.
Description
Technical field
The utility model relates to a kind of electric power system of uninterrupted power supply, relates in particular to a kind of dual power supply system based on the balance brachium pontis.
Background technology
Popularizing and the propelling of extensive use of electric equipment at any time, it is particularly important that the application of uninterrupted power supply also seems, and in duplicate supply input monocell commutation system, and the equilibrium problem of positive and negative busbar is that the industry technology personnel must not irrespective problem always; Existing most of related system is just given up this requirement in order to save cost and reduce volume in the design phase, if but do not do the positive and negative busbar balanced design and all can cause certain influence to performance and the reliability of complete machine, reduce whole quality.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of volume little, the dual power supply system based on the balance brachium pontis of positive and negative busbar balance.
To this, the utility model provides a kind of dual power supply system based on the balance brachium pontis, comprising:
Be used for realizing the AC power of Alternating Current Power Supply;
The rectification module that is connected with AC power, described rectification module comprise AC rectification unit, direct current rectification unit and the first switch element; Described AC rectification unit and the multiplexing rectifying circuit of direct current rectification unit, and pass through the switching that the first switch element is realized AC rectification and direct current rectification;
Be used for realizing the storage battery of direct current supply, described storage battery is connected with rectification module; And,
The balance module that is connected with storage battery with rectification module respectively, described balance module comprises balancing unit, charhing unit and second switch unit, described second switch unit is two-way diverter switch; The multiplexing balanced circuit of described balancing unit and charhing unit, and by two-way diverter switch realization switching and positive and negative busbar balance.
Wherein, described rectifying circuit comprises transistor or the field effect transistor of mutual serial connection, and the mid point of rectifying circuit is connected with inductance; Described the first switch element comprises the alternating-current switch that is connected with AC power and the dc switch that is connected with storage battery, and described alternating-current switch and dc switch are respectively applied to control the break-make of ac circuit and DC loop; The interchange input of described AC rectification unit and the input of the direct current of direct current rectification unit share rectifying circuit, exchange the input of input and direct current and realize switching by the first switch element; When exchanging input, the storage battery loop disconnects, and forms half-bridge circuit realization rectification and boosts; The storage battery anode is connected to the rectification input of rectification module by the first switch, and storage battery negative is connected to negative busbar, during the storage battery input, forms booster circuit, realizes the rectification of boosting to positive and negative busbar; Thus, consisted of and exchanged the multiplexing of input rectifying and direct current input rectification circuit, namely consisted of the multiplexing of AC rectification and direct current rectification, the AC rectification path when described interchange input rectifying is the AC power conducting, the direct current rectification path when described direct current input rectifying is the storage battery conducting.
Described balanced circuit comprises transistor or the field effect transistor of mutual serial connection, and namely described balance brachium pontis is transistor or the field effect transistor of mutually serial connection, is used for realizing the bridge arm balance of electric bridge; The balance brachium pontis mid point of balanced circuit is connected with the second switch unit, the multiplexing balanced circuit of described balancing unit and charhing unit, the multiplexing of this balanced circuit switched by the second switch unit, and this circuit is realized charge function when exchanging input, realizes the balance of positive and negative busbar when direct current is inputted; In the circuit of described charhing unit, balance brachium pontis mid point is connected to the storage battery anode by two-way diverter switch and the inductance of second switch unit, forms the step-down circuit to charge in batteries; Described balanced circuit is preferably in the balance brachium pontis, its balance brachium pontis mid point is connected to the positive and negative busbar mid point by two-way diverter switch and inductance, the utility model is by the up and down switch on and off of the two-way diverter switch of Current Control balance brachium pontis of sampling positive and negative busbar voltage and balance brachium pontis mid point, realize the positive and negative busbar balance, reach charging circuit multiplexing of balanced circuit and charhing unit.
Compared with prior art, in the utility model balance module, the charging circuit of balanced circuit and charhing unit is multiplexing, different with sequential at the different mode period control method, described different mode is for exchanging input pattern or direct current input pattern, and then the balance of realization positive and negative busbar, storage battery and AC power alternately guarantee dual power supply, on this basis, the rectifying circuit of described interchange input rectifying and direct current input rectifying is also multiplexing, and then has realized the dual power supply system based on the balance brachium pontis of positive and negative busbar balance, reduces its volume, save cost, can also guarantee performance and the reliability of dual power supply system simultaneously.
Further improvement of the utility model is, described rectifying circuit is the brachium pontis rectification, described the first switch element is connected to the mid point of brachium pontis rectification by inductance, and described brachium pontis rectification comprises the transistor of serial connection or the field effect transistor of discrete diode in parallel, or utilizes the diode in the transistor body.Preferably, the transistor of described brachium pontis rectification is insulated gate bipolar transistor, described insulated gate bipolar transistor is IGBT (Insulated Gate Bipolar Transistor), the compound full-control type voltage driven type power electronic device that is comprised of BJT (double pole triode) and MOS (insulating gate type field effect tube).
Described brachium pontis rectification comprises transistor or the field effect transistor of serial connection, and namely IGBT or the MOSFET of serial connection when using MOSFET, need discrete diode in parallel, and described discrete diode is the discrete power device, has comprised semiconductor diode; Described the first switch element is connected to the mid point of brachium pontis rectification by inductance, namely exchanges the input of input or direct current and is connected to the mid point of two transistors or field effect transistor by the first switch element, has consisted of good AC rectification and the direct current rectification is multiplexing.Compared with prior art, the utility model just can pass through same rectifying circuit and realize exchanging the multiplexing of input rectifying and direct current input rectifying as long as pass through the switching of the first switch and then select to exchange input and the direct current input, reduces the volume of dual power supply system.
Further improvement of the utility model is that described balanced circuit is the balance brachium pontis, and described balance brachium pontis comprises the transistor of serial connection or the field effect transistor of discrete diode in parallel.Preferably, the transistor of described balance brachium pontis is insulated gate bipolar transistor.
Further improvement of the utility model is that described rectification module comprises 3 groups of rectifying circuits, and described rectifying circuit shares storage battery, and is connected to respectively corresponding AC power.
Described 3 groups of rectifying circuit correspondences are provided with 3 group of first switch element, and shared storage battery; Described AC power by the first switch element and the connection of corresponding rectifying circuit, forms 3 tunnel dual power supply systems of inputting respectively.Described dual power supply system can carry out the selection of multichannel incoming line according to the actual requirements, and the way of incoming line is variable, and the way of output also can be selected according to the actual requirements, and the occupation mode flexibility and changeability connects simple.
Further improvement of the utility model is, also comprise for the 3rd switch element that connects storage battery and balance module, the anode of described storage battery is inputted by the rectification that the first switch element is connected to rectification module, and the anode of described storage battery is connected to the mid point of balance brachium pontis by the 3rd switch element and second switch unit.
More specifically, the anode of described storage battery is connected to the 3rd switch element by inductance, the 3rd switch element is connected with the second switch unit, to switch the mid point that is connected to the balance brachium pontis through bidirectional switch, the realization storage battery is connected with balance module, is convenient to input under the pattern of switching with exchanging in the direct current input, realizes the multiplexing of rectifying circuit and balanced circuit, reduce volume, guarantee performance and the reliability of dual power supply system.
Further improvement of the utility model is, described the first switch element and the 3rd switch element be in relay, controllable silicon and the contactor any one.
Further improvement of the utility model is that described the first switch element and the 3rd switch element are single-way switch or bidirectional switch.
For guaranteeing the normal conversion work of Alternating Current Power Supply and direct current supply, simultaneously according to different demands such as power and change-over times, wherein the first switch element and the 3rd switch element comprise in relay, controllable silicon and the contactor any one, and can be unidirectional or bidirectional switchs, such as one-way SCR; During simultaneously for assurance direct current supply, need to cut off exchanging input, according to the demand of power and switching time, the alternating-current switch in the first switch element also can correspondingly be selected different schemes, includes but not limited to relay, controllable silicon and contactor; Described two-way diverter switch can be selected the two-way diverter switches such as relay, controllable silicon and contactor.
Preferably, described AC power anode is connected to an end of the inductance of rectification module by bidirectional triode thyristor, described storage battery anode is connected to the same end of the inductance of rectification module by one-way SCR, described storage battery negative terminal is connected to rectification module and balance module; The inductance other end of described rectification module is connected to the transistorized mid point of two serial connections, and the electric capacity of two serial connections of transistor AND gate of described two serial connections is in parallel, the electric capacity neutral earthing of these two serial connections; The electric capacity mid point of described two serial connections is connected to an input of two-way diverter switch by the inductance of balance module, another input that inductance and the one-way SCR of described storage battery anode by balance module is connected to two-way diverter switch, the output of described two-way diverter switch is connected to the transistorized mid point of two serial connections; The transistor of two other serial connection of transistor AND gate of two serial connections of described balance module is in parallel, and these two the transistor mid points in parallel with balance module are realized inversion output by inductance.
Preferably, described AC power anode is connected to an end of the inductance of rectification module by bidirectional triode thyristor, described storage battery anode is connected to the same end of the inductance of rectification module by one-way SCR, described storage battery negative terminal is connected to rectification module and balance module; The inductance other end of described rectification module is connected to the mid point of the field effect transistor of two serial connections, and the field effect transistor of described two serial connections is in parallel with two electric capacity that are connected in series, the electric capacity neutral earthing of these two serial connections; The electric capacity mid point of described two serial connections is connected to an input of two-way diverter switch by the inductance of balance module, another input that inductance and the one-way SCR of described storage battery anode by balance module is connected to two-way diverter switch, the output of described two-way diverter switch is connected to the mid point of the field effect transistor of two serial connections; The field effect transistor that the field effect transistor of two serial connections of described balance module is connected in series with two other is in parallel, and these two the field effect transistor mid points in parallel with balance module are realized inversion output by inductance.
The beneficial effects of the utility model are, in the balance module, the balanced circuit of balancing unit and the charging circuit of charhing unit are multiplexing, and the balance of realization positive and negative busbar, storage battery and AC power alternately guarantee dual power supply, on this basis, the rectifying circuit of described interchange input rectifying and direct current input rectifying is also multiplexing, and then realized the balance of positive and negative busbar, number of elements and equipment volume have been effectively reduced, the components and parts reusability is high, has reduced cost, can also guarantee performance and the reliability of dual power supply system simultaneously.
Description of drawings
Fig. 1 is the operation principle schematic diagram of the utility model embodiment 1;
Fig. 2 is the interchange input pattern operation principle schematic diagram of the utility model embodiment 1;
Fig. 3 is the direct current input pattern operation principle schematic diagram of the utility model embodiment 1;
Fig. 4 is that the province of the utility model embodiment 2 is except the operation principle schematic diagram of the inductance of balance brachium pontis;
Fig. 5 is the balance brachium pontis of the utility model embodiment 2 and the operation principle schematic diagram that charging circuit shares inductance;
Fig. 6 is the operation principle schematic diagram that three of the utility model embodiment 3 advances three dual power supply systems that go out;
Fig. 7 is the operation principle schematic diagram that three of the utility model embodiment 3 advances the dual power supply system that singly goes 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 based on the balance brachium pontis, comprising:
Be used for realizing the AC power 1 of Alternating Current Power Supply;
The rectification module 2 that is connected with AC power 1, described rectification module 2 comprise AC rectification unit 201, direct current rectification unit 202 and the first switch element 203; Described AC rectification unit 201 and direct current rectification unit 202 multiplexing rectifying circuits, and by the first switch element 203 realization AC rectifications and direct current rectification switching;
Be used for realizing the storage battery 3 of direct current supply, described storage battery 3 is connected with rectification module 2;
Are connected the balance module 4 that is connected with storage battery with rectification module 2 respectively, described balance module 4 comprises balancing unit 401, charhing unit 402 and second switch unit 403, and described second switch unit 403 is two-way diverter switch; Described balancing unit 401 and charhing unit 402 multiplexing balanced circuits, and by two-way diverter switch realization switching and positive and negative busbar balance.
Wherein, described rectifying circuit comprises transistor or the field effect transistor of mutual serial connection, and the mid point of rectifying circuit is connected with inductance; Described the first switch element 203 comprises the alternating-current switch that is connected with AC power 1 and the dc switch that is connected with storage battery 3, and described alternating-current switch and dc switch are respectively applied to control the break-make of ac circuit and DC loop; The interchange input of described AC rectification unit 201 and the input of the direct current of direct current rectification unit 202 share rectifying circuit, exchange the input of input and direct current and realize switching by the first switch element 203; When exchanging input, storage battery 3 loops disconnect, and form half-bridge circuit realization rectification and boost; Storage battery 3 anodes are connected to the rectification input of rectification module 2 by the first switch, and storage battery 3 negative terminals are connected to negative busbar, during storage battery 3 input, form booster circuit, realize the rectification of boosting to positive and negative busbar; Thus, consisted of the multiplexing of interchange input rectifying and direct current input rectification circuit, the AC rectification path when described interchange input rectifying is AC power 1 conducting, the direct current rectification path when described direct current input rectifying is storage battery 3 conducting.
Described balanced circuit comprises transistor or the field effect transistor of mutual serial connection, the mid point of balanced circuit is connected with second switch unit 403, described balancing unit 401 and charhing unit 402 multiplexing balanced circuits, the multiplexing of this balanced circuit switched by second switch unit 403, this circuit is realized charge function when exchanging input, realizes the balance of positive and negative busbar when direct current is inputted; In the circuit of described charhing unit 402, balance brachium pontis mid point is connected to storage battery 3 anodes by two-way diverter switch and the inductance of second switch unit 403, forms the step-down circuit to storage battery 3 chargings; Described balanced circuit is preferably in the balance brachium pontis, its balance brachium pontis mid point is connected to the positive and negative busbar mid point by two-way diverter switch and inductance, this example is by the up and down switch on and off of the two-way diverter switch of Current Control balance brachium pontis of sampling positive and negative busbar voltage and balance brachium pontis mid point, realize the positive and negative busbar balance, reach charging circuit multiplexing of balanced circuit and charhing unit 402.
By Fig. 2 and shown in Figure 3, compared with prior art, in this routine balance module 4, the charging circuit of the balanced circuit of balancing unit 401 and charhing unit 402 is multiplexing, different with sequential at the different mode period control method, described different mode is for exchanging input pattern or direct current input pattern, and then the balance of realization positive and negative busbar, storage battery 3 and AC power 1 alternately guarantee dual power supply, on this basis, the rectifying circuit of described interchange input rectifying and direct current input rectifying is also multiplexing, and then realized the dual power supply system based on the balance brachium pontis of positive and negative busbar balance, reduce its volume, save cost, can also guarantee performance and the reliability of dual power supply system simultaneously.
The fundamental diagram of this example under utility mode and battery mode as shown in Figures 2 and 3, described utility mode namely exchanges input pattern and direct current input pattern with battery mode.
The further improvement of this example is that described rectifying circuit is the brachium pontis rectification, and described the first switch element 203 is connected to the mid point of brachium pontis rectification by inductance, and described brachium pontis rectification comprises the transistor of serial connection or the field effect transistor of discrete diode in parallel.Preferably, the transistor of described brachium pontis rectification is insulated gate bipolar transistor.
Described brachium pontis rectification comprises transistor or the field effect transistor of serial connection, and namely IGBT or the MOSFET of serial connection when using MOSFET, need discrete diode in parallel; Described the first switch element 203 is connected to the mid point of brachium pontis rectification by inductance, namely exchanges the input of input or direct current and is connected to the mid point of two transistors or field effect transistor by the first switch element 203, has consisted of good AC rectification and the direct current rectification is multiplexing.Compared with prior art, this example just can be passed through same rectifying circuit and realize exchanging the multiplexing of input rectifying and direct current input rectifying as long as pass through the switching of the first switch and then select to exchange input and the direct current input, reduces the volume of dual power supply system.
The further improvement of this example is that described balanced circuit is the balance brachium pontis, and described balance brachium pontis comprises the transistor of serial connection or the field effect transistor of discrete diode in parallel.Preferably, the transistor of described balance brachium pontis is insulated gate bipolar transistor.
The further improvement of this example is, also comprise for the 3rd switch element 404 that connects storage battery 3 and balance module 4, the anode of described storage battery 3 is inputted by the rectification that the first switch element 203 is connected to rectification module 2, and the anode of described storage battery 3 is connected to the mid point of balance brachium pontis by the 3rd switch element 404 and second switch unit 403.
More specifically, the anode of described storage battery 3 is connected to the 3rd switch element 404 by inductance, the 3rd switch element 404 is connected connection with the second switch unit, to switch the mid point that is connected to the balance brachium pontis through bidirectional switch, realization storage battery 3 is connected with balance module 4, is convenient to input under the pattern of switching with exchanging in the direct current input, realizes the multiplexing of rectifying circuit and balanced circuit, reduce volume, guarantee performance and the reliability of dual power supply system.
The further improvement of this example is, described the first switch element 203 and the 3rd switch element 404 be in relay, controllable silicon and the contactor any one.
The further improvement of this example is that described the first switch element 203 and the 3rd switch element 404 are single-way switch or bidirectional switch.
For guaranteeing the normal conversion work of Alternating Current Power Supply and direct current supply, simultaneously according to different demands such as power and change-over times, wherein the first switch element 203 and the 3rd switch element 404 comprise in relay, controllable silicon and the contactor any one, and can be unidirectional or bidirectional switch, such as one-way SCR; During simultaneously for assurance direct current supply, need to cut off exchanging input, according to the demand of power and switching time, the alternating-current switch in the first switch element 203 also can correspondingly be selected different schemes, includes but not limited to relay, controllable silicon and contactor; Described two-way diverter switch can be selected the two-way diverter switches such as relay, controllable silicon and contactor.
When the operation principle in this illustration 1 was inputted for interchange: bidirectional switch Q4 was logical, and single-way switch Q1 is disconnected, and inductance L 1, transistor Q3 and transistor Q5 form the Half bridge rectifier circuit, and the realization rectification is boosted; Transistor Q6, transistor Q7 and inductance L 5 form the step-down circuit, realize the charging to storage battery 3; Described transistor Q6 and transistor Q7 utilize diode in the IGBT body, and this routine described transistor also can replace to the field effect transistor of discrete diode in parallel.
Among Fig. 1, during the direct current input, bidirectional switch Q4 is disconnected, and single-way switch Q1 is logical, and inductance L 1, transistor Q3 and transistor Q5 form booster circuit, realize boosting rectification; Transistor Q6, transistor Q7 and inductance L 2 Compositional balance circuits, break-make and then adjustment busbar voltage by PWM modulation transistor Q6 or transistor Q7, realize the bus balance, described transistor Q3 utilizes diode in its body, and this routine described transistor also can replace to the field effect transistor of discrete diode in parallel.
This routine beneficial effect is, in the balance module 4, the charging circuit of the balanced circuit of balancing unit 401 and charhing unit 402 is multiplexing, and the balance of realization positive and negative busbar, storage battery 3 and AC power 1 alternately guarantee dual power supply, on this basis, the rectifying circuit of described interchange input rectifying and direct current input rectifying is also multiplexing, and then realized the balance of positive and negative busbar, number of elements and equipment volume have been effectively reduced, the components and parts reusability is high, has reduced cost, can also guarantee performance and the reliability of dual power supply system simultaneously.
This routine described rectification module 2 can comprise 3 groups of rectifying circuits, and described rectifying circuit shares storage battery 3, and is connected to respectively corresponding AC power 1.
Described 3 groups of rectifying circuit correspondences are provided with 3 group of first switch element 203, and shared storage battery 3; Described AC power 1 by the first switch element 203 and the connection of corresponding rectifying circuit, forms 3 tunnel dual power supply systems of inputting respectively.Described dual power supply system can carry out the selection of multichannel incoming line according to the actual requirements, and the way of incoming line is variable, and the way of output also can be selected according to the actual requirements, and the occupation mode flexibility and changeability connects simple.
Embodiment 2:
As shown in Figure 4 and Figure 5, as different from Example 1, the dual power supply system that this example provides embodiment 1 to develop, this routine described transistor also can replace to the field effect transistor of discrete diode in parallel.
Wherein, circuit shown in Figure 4 can be economized except balance brachium pontis inductance, and its operation principle is: during the interchange input, bidirectional switch Q4 is logical, and single-way switch Q1 is disconnected, and inductance L 1, transistor Q3 and transistor Q5 form the Half bridge rectifier circuit, and the realization rectification is boosted; Transistor Q6, transistor Q7 and inductance L 5 form the step-down circuit, realize the charging to battery.During the direct current input, bidirectional switch Q4 is disconnected, and single-way switch Q1 is logical, and inductance L 1, transistor Q3 and transistor Q5 form booster circuit, realizes boosting rectification; Transistor Q6 and transistor Q7 Compositional balance circuit are adjusted busbar voltage by the break-make of PWM modulation transistor Q6 or transistor Q7.
In the circuit shown in Figure 5, balance brachium pontis inductance and charging circuit inductance can share inductance L 2 inductance, and its operation principle is: bidirectional switch Q4 is logical, and single-way switch Q1 is disconnected, and inductance L 1, transistor Q3 and transistor Q5 form the Half bridge rectifier circuit, and the realization rectification is boosted; Transistor Q6, transistor Q7 and inductance L 5 form the step-down circuit, realize the charging to storage battery.During the direct current input, bidirectional switch Q4 is disconnected, and single-way switch Q1 is logical, and inductance L 1, transistor Q3 and transistor Q5 form booster circuit, realizes boosting rectification; Transistor Q6 and transistor Q7 Compositional balance circuit are adjusted busbar voltage by the break-make of PWM modulation transistor Q6 or transistor Q7.
Embodiment 3:
As shown in Figure 6 and Figure 7, different from embodiment 1 or 2 is, this example can be applicable to three to be advanced three and go out circuit or three and advance singly to go out circuit, and this routine described transistor also can replace to the field effect transistor of discrete diode in parallel.
Wherein, Figure 6 shows that three advance the three line work schematic diagrams that go out, its operation principle: when exchanging input, single-way switch Q10R, single-way switch Q10S and single-way switch Q10T are logical, single-way switch Q1, single-way switch Q11 and single-way switch Q111 are disconnected, (inductance L 1-R, transistor Q3-R, transistor Q5-R), (inductance L 1-S, transistor Q3-S, transistor Q5-S) and (inductance L 1-T, transistor Q3-T, transistor Q5-T) form three-phase Half bridge rectifier circuit, the realization rectification is boosted; Transistor Q6, transistor Q7 and inductance L 2 form the step-down circuit, realize the charging to battery.During direct current (battery) input, single-way switch Q10R, single-way switch Q10S and single-way switch Q10T are disconnected, and single-way switch Q1, single-way switch Q11 and single-way switch Q111 are logical, and inductance L 1, transistor Q3 and transistor Q5 form booster circuit, realize boosting rectification; Transistor Q6, transistor Q7 and inductance L 5 Compositional balance circuits are adjusted busbar voltage by the break-make of PWM modulation transistor Q6 or transistor Q7.Output is adopted as 3 tunnel outputs.
Figure 7 shows that three advance the line work schematic diagram that singly goes out, its operation principle: when exchanging input, single-way switch Q10R, single-way switch Q10S and single-way switch Q10T are logical, and single-way switch Q1, single-way switch Q11 and single-way switch Q111 are disconnected, (inductance L 1-R, transistor Q3-R, transistor Q5-R), (inductance L 1-S, transistor Q3-S, transistor Q5-S) and (inductance L 1-T, transistor Q3-T, transistor Q5-T) form three-phase Half bridge rectifier circuit, the realization rectification is boosted; Transistor Q6, transistor Q7 and inductance L 2 form the step-down circuit, realize the charging to battery.During direct current (battery) input, single-way switch Q10R, single-way switch Q10S and single-way switch Q10T are disconnected, and single-way switch Q1, single-way switch Q11 and single-way switch Q111 are logical, and inductance L 1, transistor Q3 and transistor Q5 form booster circuit, realize boosting rectification; Transistor Q6, transistor Q7 and inductance L 5 Compositional balance circuits are adjusted busbar voltage by the break-make of PWM modulation transistor Q6 or transistor Q7.Be output as single channel 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 based on the balance brachium pontis is characterized in that, comprising:
Be used for realizing the AC power of Alternating Current Power Supply;
With the rectification module that described AC power is connected, described rectification module comprises AC rectification unit, direct current rectification unit and the first switch element; Described AC rectification unit and the multiplexing rectifying circuit of direct current rectification unit, and pass through the switching that the first switch element is realized AC rectification and direct current rectification;
Be used for realizing the storage battery of direct current supply, described storage battery is connected with rectification module; And,
The balance module that is connected with storage battery with described rectification module respectively, described balance module comprises balancing unit, charhing unit and second switch unit, described second switch unit is two-way diverter switch; The multiplexing balanced circuit of described balancing unit and charhing unit, and by two-way diverter switch realization switching and positive and negative busbar balance.
2. the dual power supply system based on the balance brachium pontis according to claim 1, it is characterized in that, described rectifying circuit is the brachium pontis rectification, described the first switch element is connected to the mid point of brachium pontis rectification by inductance, and described brachium pontis rectification comprises the transistor of serial connection or the field effect transistor of discrete diode in parallel.
3. the dual power supply system based on the balance brachium pontis according to claim 1 and 2 is characterized in that, described balanced circuit is the balance brachium pontis, and described balance brachium pontis comprises the transistor of serial connection or the field effect transistor of discrete diode in parallel.
4. the dual power supply system based on the balance brachium pontis according to claim 3 is characterized in that, described rectification module comprises 3 groups of rectifying circuits, and described rectifying circuit shares storage battery, and is connected to respectively corresponding AC power.
5. the dual power supply system based on the balance brachium pontis according to claim 3, it is characterized in that, also comprise for the 3rd switch element that connects storage battery and balance module, the anode of described storage battery is inputted by the rectification that the first switch element is connected to rectification module, and the anode of described storage battery is connected to the mid point of balance brachium pontis by the 3rd switch element and second switch unit.
6. the dual power supply system based on the balance brachium pontis according to claim 5 is characterized in that, described the first switch element and the 3rd switch element be in relay, controllable silicon and the contactor any one.
7. the dual power supply system based on the balance brachium pontis according to claim 5 is characterized in that, described the first switch element and the 3rd switch element are single-way switch or bidirectional switch.
8. the dual power supply system based on the balance brachium pontis according to claim 7 is characterized in that, described the first switch element and the 3rd switch element be in relay, controllable silicon and the contactor any one.
9. the dual power supply system based on the balance brachium pontis according to claim 8, it is characterized in that, described AC power anode is connected to an end of the inductance of rectification module by bidirectional triode thyristor, described storage battery anode is connected to the same end of the inductance of rectification module by one-way SCR, described storage battery negative terminal is connected to rectification module and balance module; The inductance other end of described rectification module is connected to the transistorized mid point of two serial connections, and the electric capacity of two serial connections of transistor AND gate of described two serial connections is in parallel, the electric capacity neutral earthing of these two serial connections; The electric capacity mid point of described two serial connections is connected to an input of two-way diverter switch by the inductance of balance module, another input that inductance and the one-way SCR of described storage battery anode by balance module is connected to two-way diverter switch, the output of described two-way diverter switch is connected to the transistorized mid point of two serial connections; The transistor of two other serial connection of transistor AND gate of two serial connections of described balance module is in parallel, and these two the transistor mid points in parallel with balance module are realized inversion output by inductance.
10. the dual power supply system based on the balance brachium pontis according to claim 8, it is characterized in that, described AC power anode is connected to an end of the inductance of rectification module by bidirectional triode thyristor, described storage battery anode is connected to the same end of the inductance of rectification module by one-way SCR, described storage battery negative terminal is connected to rectification module and balance module; The inductance other end of described rectification module is connected to the mid point of the field effect transistor of two serial connections, and the field effect transistor of described two serial connections is in parallel with two electric capacity that are connected in series, the electric capacity neutral earthing of these two serial connections; The electric capacity mid point of described two serial connections is connected to an input of two-way diverter switch by the inductance of balance module, another input that inductance and the one-way SCR of described storage battery anode by balance module is connected to two-way diverter switch, the output of described two-way diverter switch is connected to the mid point of the field effect transistor of two serial connections; The field effect transistor that the field effect transistor of two serial connections of described balance module is connected in series with two other is in parallel, and these two the field effect transistor mid points in parallel with balance module are realized inversion output by inductance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220225016 CN202679055U (en) | 2012-05-18 | 2012-05-18 | A dual power supply system based on a balance bridge arm |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220225016 CN202679055U (en) | 2012-05-18 | 2012-05-18 | A dual power supply system based on a balance bridge arm |
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| CN202679055U true CN202679055U (en) | 2013-01-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710007A (en) * | 2012-05-18 | 2012-10-03 | 深圳市健网科技有限公司 | Double-power-supply system based on balance bridge arm |
| CN106602853A (en) * | 2015-10-15 | 2017-04-26 | 伊顿公司 | Discharge device and discharge method for DC buses of uninterruptible power supply |
| CN106716775A (en) * | 2014-06-03 | 2017-05-24 | Abb瑞士股份有限公司 | Uninterruptible power supply system with precharge converter |
-
2012
- 2012-05-18 CN CN 201220225016 patent/CN202679055U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710007A (en) * | 2012-05-18 | 2012-10-03 | 深圳市健网科技有限公司 | Double-power-supply system based on balance bridge arm |
| CN102710007B (en) * | 2012-05-18 | 2014-08-06 | 深圳市健网科技有限公司 | Double-power-supply system based on balance bridge arm |
| CN106716775A (en) * | 2014-06-03 | 2017-05-24 | Abb瑞士股份有限公司 | Uninterruptible power supply system with precharge converter |
| CN106716775B (en) * | 2014-06-03 | 2019-07-30 | Abb瑞士股份有限公司 | Uninterruptible power system with preliminary filling electric transducer |
| CN106602853A (en) * | 2015-10-15 | 2017-04-26 | 伊顿公司 | Discharge device and discharge method for DC buses of uninterruptible power supply |
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