CN103872716A

CN103872716A - Redundant power supply system

Info

Publication number: CN103872716A
Application number: CN201210547888.1A
Authority: CN
Inventors: 陈志列; 陈敬毅; 周仕贤
Original assignee: EVOC Intelligent Technology Co Ltd
Current assignee: Shenzhen Yanxiang Smart Technology Co ltd
Priority date: 2012-12-17
Filing date: 2012-12-17
Publication date: 2014-06-18
Anticipated expiration: 2032-12-17
Also published as: CN103872716B

Abstract

The invention is suitable for the field of power supply control, and provides a redundant power supply system. A first power supply module, a second power supply module, a first redundancy control module, a second redundancy control module, a first boost-buck module, a second boost-buck module, a first switching module and a second switching module are adopted in the redundant power supply system, redundant power supply can be realized under the condition of two paths of power supply buses, redundant power supply hybrid configuration can be performed by the first power supply module and the second power supply module by adopting different types of power supply circuits respectively when only one path of power supply bus is available, and the aim of realizing redundant power supply control by using industrial automatic control equipment is fulfilled, so that the problem that redundant power supply cannot be performed on the industrial automatic control equipment in a compatible way under the condition that only one path of power supply bus supplies power while redundant power supply is realized by using two paths of power supply buses in the prior art is solved.

Description

A kind of redundant power electric power system

Technical field

The invention belongs to power supply control field, relate in particular to a kind of redundant power electric power system.

Background technology

In industrial automatic control field, in order to ensure the continued power to equipment, promote reliability, fail safe and the technological rationality of power supply, and ensureing under the prerequisite of the reliability and security of realizing power supply, also need further to promote the economy of power supply, thereby make industrial automation control appliance realize under the prerequisite that system stability is powered and software is not damaged and can normally work.

In the face of above-mentioned for industrial automation control appliance for power supply related needs, prior art be the power circuit by adopt two batteries or two uninterrupted power supply formulas be simultaneously equipment carry out redundant power supply with ensure can obtain and stablize lasting power supply industrial automation control appliance.But, above-mentioned prior art is could realize redundant power supply for the power circuit of two batteries or two uninterrupted power supply formulas provides respectively power supply buses in the course of the work, so, it is when only having the situation of a road power supply buses, owing to the power circuit of battery and uninterrupted power supply formula cannot being carried out to mixed configuration to share a road power supply buses, can cause it to realize redundant power supply for industrial automation control appliance.Therefore, prior art, supporting duplex feeding bus with in realizing redundant power supply, is carried out redundant power supply to industrial automation control appliance in the situation that cannot compatible only have a road power supply buses to power.

Summary of the invention

The object of the present invention is to provide a kind of redundant power electric power system, be intended to solve prior art supporting duplex feeding bus with in realizing redundant power supply, cannot compatible only have the problem of in the situation of a road power supply buses power supply, industrial automation control appliance being carried out redundant power supply.

The present invention is achieved in that a kind of redundant power electric power system, is connected with the power end of industrial automation control appliance, it is characterized in that, described redundant power electric power system comprises:

The first supply module, the second supply module, the first redundant control module, the second redundant control module, the first buck module, the second buck module, the first switch module and second switch module;

Described the first supply module has input and output, described the second supply module also has input and output, the output of the output of described the first supply module and described the second supply module is connected respectively the input of described the first redundant control module and the input of described the second redundant control module, the output of the output of described the first redundant control module and described the second redundant control module is connected to the power end of described industrial automation control appliance altogether, described the first supply module and described the second supply module are respectively to described the first redundant control module and described the second redundant control module output direct current,

Described the first redundant control module compares the voltage of the power end of the output voltage of described the first supply module and described industrial automation control appliance, in the time that the output voltage of described the first supply module is greater than the voltage of power end of described industrial automation control appliance, described the first redundant control module conducting also will export the power end of described industrial automation control appliance to from the direct current of described the first supply module;

Described the second redundant control module compares the voltage of the power end of the output voltage of described the second supply module and described industrial automation control appliance, in the time that the output voltage of described the second supply module is greater than the voltage of power end of described industrial automation control appliance, described the second redundant control module conducting also will export the power end of described industrial automation control appliance to from the direct current of described the second supply module;

The input of described the first buck module connects the output of described the first supply module, and described the first buck module is carried out buck processing to the output direct current of described the first supply module;

The input of described the second buck module connects the output of described the second supply module, and described the second buck module is carried out buck processing to the output direct current of described the second supply module;

Described the first switch module and described second switch module all have switch control end, input and output, and the input of the input of described the first switch module and described second switch module is connected with the output of described the first buck module and the output of described the second buck module respectively;

When described the first supply module is a power circuit, and when described the second supply module is a battery feed circuit, described the second supply module comprises the second battery charge controller, and also have for electrical input and switch controlling signal output, the input of described the first supply module connects power supply buses, the switch control end of described the first switch module is connected with the switch controlling signal output of described the second supply module, the electrical input that supplies of described the second supply module connects the output of described the first buck module, the output of described the first switch module is connected with the input of described the second supply module, it is described the second battery charge controller power supply that described the second supply module is introduced direct current from the output of described the first buck module, it is described the second supply module charging that described the first switch module is introduced direct current for the switch controlling signal of exporting according to described the second supply module from described the first buck module,

When described the first supply module is a battery feed circuit, and when described the second supply module is a power circuit, described the first supply module comprises the first battery charge controller, and also have for electrical input and switch controlling signal output, the input of described the second supply module connects power supply buses, the switch control end of described second switch module is connected with the switch controlling signal output of described the first supply module, the electrical input that supplies of described the first supply module connects the output of described the second buck module, the output of described second switch module is connected with the input of described the first supply module, it is described the first battery charge controller power supply that described the first supply module is introduced direct current from the output of described the second buck module, it is described the first supply module charging that described second switch module is introduced direct current for the switch controlling signal of exporting according to described the first supply module from described the second buck module.

Further, in the time that described the first supply module and described the second supply module are all described power circuit, the equal sky of switch control end of the switch control end of described the first switch module and described second switch module connects, and the output of the output of described the first switch module and described second switch module also equal sky connects, and the input of the input of described the first supply module and described the second supply module is connected respectively the first power supply buses and the second power supply buses.

Further, in the time that described the first supply module and described the second supply module are all described battery feed circuit, the equal sky of input of the input of described the first supply module and described the second supply module connects, and the output of the output of described the first switch module and described second switch module also all sky connect.

In the present invention, by adopt the first supply module in redundant power electric power system, the second supply module, the first redundant control module, the second redundant control module, the first buck module, the second buck module, the first switch module and second switch module, can in the situation that possessing duplex feeding bus, realize redundant power supply, can in the time only having a road power supply buses, can make described the first supply module and described the second supply module adopt respectively dissimilar power supply circuits to carry out redundant power mixed configuration again, and reach equally the object that industrial automation control appliance is realized to redundant power supply control, thereby solve prior art supporting duplex feeding bus with in realizing redundant power supply, cannot compatible only have the problem of in the situation of a road power supply buses power supply, industrial automation control appliance being carried out redundant power supply.

Brief description of the drawings

Fig. 1 is the modular structure and basic annexation figure of the redundant power control system that provides of the embodiment of the present invention;

Fig. 2 is the basic circuit structure figure of the redundant power control system that provides of the embodiment of the present invention;

Fig. 3 is the modular structure figure of the redundant power control system that provides of first embodiment of the invention;

Fig. 4 is the circuit structure diagram of the redundant power control system that provides of first embodiment of the invention;

Fig. 5 is the modular structure figure of the redundant power control system that provides of second embodiment of the invention;

Fig. 6 is the circuit structure diagram of the redundant power control system that provides of second embodiment of the invention;

Fig. 7 is the modular structure figure of the redundant power control system that provides of third embodiment of the invention;

Fig. 8 is the circuit structure diagram of the redundant power control system that provides of third embodiment of the invention;

Fig. 9 is the modular structure figure of the redundant power control system that provides of fourth embodiment of the invention.

Embodiment

In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.

In embodiments of the present invention, by adopt the first supply module in redundant power electric power system, the second supply module, the first redundant control module, the second redundant control module, the first buck module, the second buck module, the first switch module and second switch module, can in the situation that possessing duplex feeding bus, realize redundant power supply, can in the time only having a road power supply buses, can make described the first supply module and described the second supply module adopt respectively dissimilar power supply circuits to carry out redundant power mixed configuration again, and reach equally the object that industrial automation control appliance is realized to redundant power supply control.

Different according to the circuit types that the first supply module is selected from the second supply module, also can there is corresponding change in the local annexation of redundant power electric power system, therefore, Fig. 1 only shows modular structure and the basic annexation of the redundant power electric power system that the embodiment of the present invention provides, and details are as follows:

Redundant power electric power system 100 is connected with the power end of industrial automation control appliance 200, and redundant power electric power system 100 comprises:

The first supply module 101, the second supply module 102, the first redundant control module 103, the second redundant control module 104, the first buck module 105, the second buck module 106, the first switch module 107 and second switch module 108.

The first supply module 101 has input IN1 and output DC1, the second supply module 102 also has input IN2 and output DC2, the output DC1 of the first supply module 101 is connected respectively the input of the first redundant control module 103 and the input of the second redundant control module 104 with the output DC2 of the second supply module 102, the output of the output of the first redundant control module 103 and the second redundant control module 104 is connected to the power end of industrial automation control appliance 200 altogether, the first supply module 101 and the second supply module 102 are exported direct current to the first redundant control module 103 and the second redundant control module 104 respectively.

The first redundant control module 103 compares the voltage of the power end of the output voltage of the first supply module 101 and industrial automation control appliance 200, in the time that the output voltage of the first supply module 101 is greater than the voltage of power end of industrial automation control appliance 200, the first redundant control module 103 conductings also will export the power end of industrial automation control appliance 200 to from the direct current of the first supply module 101.

The second redundant control module 104 compares the voltage of the power end of the output voltage of the second supply module 102 and industrial automation control appliance 200, in the time that the output voltage of the second supply module 102 is greater than the voltage of power end of industrial automation control appliance 200, the second redundant control module 104 conductings also will export the power end of industrial automation control appliance 200 to from the direct current of the second supply module 102.

The input of the first buck module 105 connects the output of the first supply module 101, and the first buck module 105 is carried out buck processing to the output direct current of the first supply module 101;

The input of the second buck module 106 connects the output of the second supply module 102, and the second buck module 106 is carried out buck processing to the output direct current of the second supply module 102;

The first switch module 107 has switch control end, input and output, and second switch module 108 also has switch control end, input and output, the input of the input of the first switch module 107 and second switch module 108 is connected with the output of the first buck module 104 and the output of the second buck module 105 respectively.

Further, as shown in Figure 2, the first redundant control module 103 comprises:

Resistance R 1, NMOS pipe Q1, NMOS pipe Q2 and the first metal-oxide-semiconductor controller U1;

The drain electrode of NMOS pipe Q1 is the input of the first redundant control module 103, the source electrode of NMOS pipe Q1 connects the source electrode of NMOS pipe Q2, the drain electrode of NMOS pipe Q2 is the output of the first redundant control module 103, resistance R 1 is connected between the NMOS pipe drain electrode of Q1 and the first voltage input end Vin of metal-oxide-semiconductor controller U1, the grid of the grid of NMOS pipe Q1 and NMOS pipe Q2 is connected to the output Gate of the first metal-oxide-semiconductor controller U1 altogether, and the second voltage input Vout of the first metal-oxide-semiconductor controller U1 is connected with the drain electrode of NMOS pipe Q2.Wherein, the break-make of NMOS pipe Q1 and NMOS pipe Q2 is that the level of being exported by the output Gate of the first metal-oxide-semiconductor controller U1 determines, when the output Gate of the first metal-oxide-semiconductor controller U1 output high level, and when this high level is greater than the source voltage of NMOS pipe Q1 and NMOS pipe Q2, NMOS pipe Q1 and NMOS pipe Q2 conducting simultaneously, in the time of the output Gate output low level of the first metal-oxide-semiconductor controller U1, NMOS pipe Q1 and NMOS pipe Q2 end simultaneously; The first metal-oxide-semiconductor controller U1 metal-oxide-semiconductor control chip that specifically model is LT4531.Owing to being the switching characteristic of having utilized NMOS pipe Q1 and NMOS pipe Q2 herein, in other embodiments of the invention, NMOS pipe Q1 and NMOS pipe Q2 can be replaced with PMOS pipe simultaneously, and the first metal-oxide-semiconductor controller U1 are replaced with simultaneously and have voltage ratio and the break-make control to PMOS pipe with realization of the voltage comparator circuit of control pmos function processed.

Further, as shown in Figure 2, the second redundant control module 104 comprises:

Resistance R 2, NMOS pipe Q3, NMOS pipe Q4 and the second metal-oxide-semiconductor controller U2;

The drain electrode of NMOS pipe Q3 is the input of the second redundant control module 104, the source electrode of NMOS pipe Q3 connects the source electrode of NMOS pipe Q4, the drain electrode of NMOS pipe Q4 is the output of the second redundant control module 104, resistance R 2 is connected between the NMOS pipe drain electrode of Q3 and the first voltage input end Vin of the second metal-oxide-semiconductor controller U2, the grid of the grid of NMOS pipe Q3 and NMOS pipe Q4 is connected to the output Gate of the second metal-oxide-semiconductor controller U2 altogether, and the second voltage input Vout of the second metal-oxide-semiconductor controller U2 is connected with the drain electrode of NMOS pipe Q4.Wherein, the break-make of NMOS pipe Q3 and NMOS pipe Q4 is that the level of being exported by the output of the second metal-oxide-semiconductor controller U2 determines, when the output Gate of the second metal-oxide-semiconductor controller U2 output high level, and when this high level is greater than the source voltage of NMOS pipe Q3 and NMOS pipe Q4, NMOS pipe Q3 and NMOS pipe Q4 conducting simultaneously, in the time of the output Gate output low level of the second metal-oxide-semiconductor controller U2, NMOS pipe Q3 and NMOS pipe Q4 end simultaneously; The second metal-oxide-semiconductor controller U2 metal-oxide-semiconductor control chip that specifically model is LT4531.Owing to being the switching characteristic of having utilized NMOS pipe Q3 and NMOS pipe Q4 herein, in other embodiments of the invention, NMOS pipe Q3 and NMOS pipe Q4 can be replaced with PMOS pipe simultaneously, and the second metal-oxide-semiconductor controller U2 are replaced with simultaneously and have voltage ratio and the break-make control to PMOS pipe with realization of the voltage comparator circuit of control pmos function processed.

Further, as shown in Figure 2, the first buck module 105 comprises:

Capacitor C 1, NMOS pipe Q5, NMOS pipe Q6, inductance L 1, resistance R 3, NMOS pipe Q7, NMOS pipe Q8, capacitor C 2, the first buck controller U3, resistance R 4 and resistance R 5;

The drain electrode of NMOS pipe Q5 is the input of the first buck module 105, capacitor C 1 is connected between the drain electrode and ground of NMOS pipe Q5, the drain electrode of the source electrode of NMOS pipe Q5 and NMOS pipe Q6 is connected to the first end of inductance L 1 altogether, the source electrode of the source electrode of NMOS pipe Q6 and NMOS pipe Q7 is connected to the first end of resistance R 3 altogether, the second end ground connection of resistance R 3, the NMOS pipe drain electrode of Q7 and the second end of inductance L 1 are connected to the source electrode of NMOS pipe Q8 altogether, the drain electrode of NMOS pipe Q8 is the output of the first buck module 105, capacitor C 2 is connected between the drain electrode and ground of NMOS pipe Q8, the drain electrode of the first termination NMOS pipe Q8 of resistance R 4, the second end of resistance R 4 and the first end of resistance R 5 are connected to the feedback reference voltage input pin VSNS of the first buck controller U3 altogether, the second end ground connection of resistance R 5, the negative pin SNS-of the positive pin SNS+ of current detecting of the first buck controller U3 and current detecting first end and the second end of contact resistance R3 respectively, the first top gate of the first buck controller U3 drives pin TG1, the second top gate drives pin TG2, the first lower end grid drives pin BG1 and the second lower end grid to drive pin BG2 to manage respectively the grid of Q8 with NMOS, the grid of NMOS pipe Q5, the grid of the grid of NMOS pipe Q7 and NMOS pipe Q6 is connected, the power supply lower margin PGND ground connection of the first buck controller U3.Wherein, the first buck controller U3 four switch buck control chips that specifically model is LTC3780.

Further, as shown in Figure 2, the second buck module 106 comprises:

Capacitor C 3, NMOS pipe Q9, NMOS pipe Q10, inductance L 2, resistance R 6, NMOS pipe Q11, NMOS pipe Q12, capacitor C 4, the second buck controller U4, resistance R 7 and resistance R 8;

The drain electrode of NMOS pipe Q9 is the input of the second buck module 106, capacitor C 3 is connected between the drain electrode and ground of NMOS pipe Q9, the drain electrode of the source electrode of NMOS pipe Q9 and NMOS pipe Q10 is connected to the first end of inductance L 2 altogether, the source electrode of the source electrode of NMOS pipe Q10 and NMOS pipe Q11 is connected to the first end of resistance R 6 altogether, the second end ground connection of resistance R 6, the NMOS pipe drain electrode of Q11 and the second end of inductance L 2 are connected to the source electrode of NMOS pipe Q12 altogether, the drain electrode of NMOS pipe Q12 is the output of the second buck module 106, capacitor C 4 is connected between the drain electrode and ground of NMOS pipe Q12, the drain electrode of the first termination NMOS pipe Q12 of resistance R 7, the second end of resistance R 7 and the first end of resistance R 8 are connected to the feedback reference voltage input pin VSNS of the second buck controller U4 altogether, the second end ground connection of resistance R 8, the negative pin SNS-of the positive pin SNS+ of current detecting of the second buck controller U4 and current detecting first end and the second end of contact resistance R6 respectively, the first top gate of the second buck controller U4 drives pin TG1, the second top gate drives pin TG2, the first lower end grid drives pin BG1 and the second lower end grid to drive pin BG2 to manage respectively the grid of Q12 with NMOS, the grid of NMOS pipe Q9, the grid of the grid of NMOS pipe Q11 and NMOS pipe Q10 is connected, the power supply lower margin PGND ground connection of the second buck controller U4.Wherein, the second buck controller U4 four switch buck control chips that specifically model is LTC3780.

Further, as shown in Figure 2, the first switch module 107 comprises resistance R 9, NPN type triode Q13 and diode D1, the first end of resistance R 9 is the input of the first switch module 107, the second end of the emitter connecting resistance R9 of NPN type triode Q13, the base stage of NPN type triode Q13 is the switch control end of the first switch module 107, and the collector electrode of NPN type triode Q13 connects the anode of diode D1, and the negative electrode of diode D1 is the output of the first switch module 107.Wherein, due to NPN type triode, Q13 plays on-off action at this, so in other embodiments of the invention, NPN type triode Q13 is replaceable possesses the semiconductor switch device of switching characteristic for NMOS pipe, insulated gate bipolar transistor (Insulated Gate Bipolar Transistor, IGBT) or other.

Further, as shown in Figure 2, second switch module 108 comprises resistance R 10, NPN type triode Q14 and diode D2, the first end of resistance R 10 is the input of second switch module 108, the second end of the emitter connecting resistance R10 of NPN type triode Q14, the base stage of NPN type triode Q14 is the switch control end of second switch module 108, and the collector electrode of NPN type triode Q14 connects the anode of diode D2, and the negative electrode of diode D2 is the output of second switch module 108.Wherein, due to NPN type triode, Q14 plays on-off action at this, so in other embodiments of the invention, NPN type triode Q14 is replaceable possesses the semiconductor switch device of switching characteristic for NMOS pipe, insulated gate bipolar transistor (Insulated Gate Bipolar Transistor, IGBT) or other.

Below in conjunction with specific embodiment, the specific implementation of the redundant power electric power system shown in Fig. 1 is further described:

embodiment mono-:

Fig. 3 shows the modular structure of the redundant power electric power system that first embodiment of the invention provides, and for convenience of explanation, only shows the part relevant to first embodiment of the invention, and details are as follows:

The redundant power electric power system that the present embodiment provides is that the redundant power electric power system 100 shown in Fig. 1 is a power circuit at the first supply module 101, and implementation when the second supply module 102 is a battery feed circuit, the present embodiment is maintaining under the prerequisite of the each module annexation shown in Fig. 1 and Fig. 2 and each inside modules structure, and redundant power electric power system 100 has also further realized following annexation:

The second supply module 102 comprises the second battery charge controller U5, and also have for electrical input VCC and switch controlling signal output DS, the input IN1 of the first supply module 101 connects power supply buses, the switch control end of the first switch module 107 is connected with the switch controlling signal output DS of the second supply module 102, the electrical input VCC that supplies of the second supply module 102 connects the output of the first buck module 105, the output of the first switch module 107 is connected with the input IN2 of the second supply module 102, it is the second battery charge controller U5 power supply that the second supply module 102 is introduced direct current from the output of the first buck module 105, it is that the second supply module 102 charges that the first switch module 107 is introduced direct current for the switch controlling signal of exporting according to the second supply module 102 from the first buck module 105.

Wherein, because the first supply module 101 is a power circuit, it is to be made up of the power supply topologies of commonly using and control chip.

The second supply module 102 is a battery feed circuit, be that it is the power supply circuits taking storage battery as core power supply component, and by the second battery charge controller U5, storage battery is carried out to Charge Management, the input IN2 of the second supply module 102 is for to introduce direct current from the first switch module 107 be charge in batteries, mentioned herein and storage battery can be the battery that lithium battery, lead-acid battery, Ni-MH battery and lithium polymer battery etc. possess electric energy and charge and discharge characteristic.

Redundant power electric power system 100(the present embodiment being provided below in conjunction with operation principle is as shown in Figure 4) be described further:

The direct current I1 that the output DC1 of the first supply module 101 exports enters respectively the input of the first redundant control module 103 and the input of the first buck module 105, resistance R 4 and resistance R 5 are sampled and are obtained a feedback voltage after dividing potential drop and input the feedback reference voltage input pin VSNS of the first buck controller U3 the drain voltage of NMOS pipe Q8, and the first buck controller U3 compares the output end voltage of the first buck module 105 and its input terminal voltage according to this feedback voltage, in the time that the output end voltage of the first buck module 105 is less than its input terminal voltage, the first buck controller U3 can drive pin TG1 and the first lower end grid to drive pin BG1 output to have the break-make of pulse signal control NMOS pipe Q8 and the NMOS pipe Q7 of particular duty cycle by its first top gate, simultaneously, the first buck controller U3 also drives pin TG2 output high level control NMOS pipe Q5 conducting by its second top gate, and drive pin BG2 output low level control NMOS pipe Q6 cut-off by its second lower end grid, so just, can be to the processing of boosting of the input voltage of the first buck module 105, in the time that the output end voltage of the first buck module 105 is greater than its input terminal voltage, the first buck controller U3 can drive pin TG2 and the second lower end grid to drive pin BG2 output to have the break-make of pulse signal control NMOS pipe Q5 and the NMOS pipe Q6 of particular duty cycle by its second top gate, simultaneously, the first buck controller U3 also drives pin TG1 output high level control NMOS pipe Q8 conducting by its first top gate, and drive pin BG1 output low level control NMOS pipe Q7 cut-off by its first lower end grid, so just, can carry out step-down processing to the input voltage of the first buck module 105.In said process, the electrical input VCC that supplies of the second supply module 102 is the second battery charge controller U5 power supply from the output introducing direct current of the first buck module 105, the second battery charge controller U5 just carries out Charge Management to the storage battery in the second supply module 102, and export high level as switch controlling signal driving positive-negative-positive triode Q13 conducting, the second supply module 102 can be charge in batteries from the negative electrode introducing direct current of diode D1 by its input IN2, and in the time that charge in batteries completes, the second battery charge controller U5 can output low level make positive-negative-positive triode Q13 cut-off as switch controlling signal, now the second supply module 102 in completely standby electricity condition.From foregoing, the in the situation that of the first supply module 101 normal work, storage battery in the second supply module 102 is always in standby electricity condition (in preparation power supply state), because the output voltage of the first supply module 101 is higher than the voltage of the output DC2 of the second supply module 102, the second metal-oxide-semiconductor controller U2 in the first metal-oxide-semiconductor controller U1 in the first redundant control module 103 and the second redundant control module 104 through voltage ratio after, the output Gate of the first metal-oxide-semiconductor controller U1 can export high level control NMOS pipe Q1 and NMOS pipe Q2 conducting, and the output Gate of the second metal-oxide-semiconductor controller U2 can manage Q3 and NMOS pipe Q4 cut-off by output low level control NMOS, so, now to be powered for industrial automation control appliance 200 by the first supply module 101, when the first supply module 101 is during because of power supply buses power-off or its internal fault power-off, the output Gate of the first metal-oxide-semiconductor controller U1 can manage Q1 and NMOS pipe Q2 cut-off by output low level control NMOS, and the output Gate of metal-oxide-semiconductor controller U2 can export high level control NMOS pipe Q3 and NMOS pipe Q4 conducting, is now that industrial automation control appliance 200 is powered by the storage battery in the second supply module 102.

Therefore, by making the first supply module 101 and the second supply module 102 be respectively power circuit and battery feed circuit, still can be to the redundant power supply control of industrial automation control appliance in the situation that only having a road power supply buses, to ensure that industrial automation control appliance normally works under stable and lasting condition of power supply.

embodiment bis-:

Fig. 5 shows the modular structure of the redundant power electric power system that second embodiment of the invention provides, and for convenience of explanation, only shows the part relevant to second embodiment of the invention, and details are as follows:

The redundant power electric power system that the present embodiment provides is that the redundant power electric power system 100 shown in Fig. 1 is a battery feed circuit at the first supply module 101, and implementation when the second supply module 102 is a power circuit, the present embodiment is maintaining under the prerequisite of the each module annexation shown in Fig. 1 and Fig. 2 and each inside modules structure, and redundant power electric power system 100 has also further realized following annexation:

The first supply module 101 comprises the first battery charge controller U6, and also have for electrical input VCC and switch controlling signal output DS, the input IN2 of the second supply module 102 connects power supply buses, the switch control end of second switch module 108 is connected with the switch controlling signal output DS of the first supply module 101, the electrical input VCC that supplies of the first supply module 101 connects the output of the second buck module 106, the output of second switch module 108 is connected with the input of the first supply module 101, it is the first battery charge controller U6 power supply that the first supply module 101 is introduced direct current from the output of the second buck module 106, it is that the first supply module 101 charges that second switch module 108 is introduced direct current for the switch controlling signal of exporting according to the first supply module 101 from the second buck module 106.

Wherein, the first supply module 101 is a battery feed circuit, be that it is the power supply circuits taking storage battery as core power supply component, and by the first battery charge controller U6, storage battery is carried out to Charge Management, the input IN1 of the first supply module 101 is for to introduce direct current from second switch module 108 be charge in batteries, mentioned herein and storage battery can be the battery that lithium battery, lead-acid battery, Ni-MH battery and lithium polymer battery etc. possess electric energy and charge and discharge characteristic.

Because the second supply module 102 is a power circuit, it is to be made up of the power supply topologies of commonly using and control chip.

Redundant power electric power system 100(the present embodiment being provided below in conjunction with operation principle is as shown in Figure 6) be described further:

The direct current I2 that the output DC2 of the second supply module 102 exports enters respectively the input of the first redundant control module 104 and the input of the second buck module 106, resistance R 7 and resistance R 8 are sampled and are obtained a feedback voltage after dividing potential drop and input the feedback reference voltage input pin VSNS of the second buck controller U4 the drain voltage of NMOS pipe Q12, and the second buck controller U4 compares the output end voltage of the second buck module 106 and its input terminal voltage according to this feedback voltage, in the time that the output end voltage of the second buck module 106 is less than its input terminal voltage, the second buck controller U4 can drive pin TG1 and the first lower end grid to drive pin BG1 output to have the break-make of pulse signal control NMOS pipe Q12 and the NMOS pipe Q11 of particular duty cycle by its first top gate, simultaneously, the second buck controller U4 also drives pin TG2 output high level control NMOS pipe Q9 conducting by its second top gate, and drive pin BG2 output low level control NMOS pipe Q10 cut-off by its second lower end grid, so just, can be to the processing of boosting of the input voltage of the second buck module 106, in the time that the output end voltage of the second buck module 106 is greater than its input terminal voltage, the second buck controller U4 can drive pin TG2 and the second lower end grid to drive pin BG2 output to have the break-make of pulse signal control NMOS pipe Q9 and the NMOS pipe Q10 of particular duty cycle by its second top gate, simultaneously, the second buck controller U4 also drives pin TG1 output high level control NMOS pipe Q12 conducting by its first top gate, and drive pin BG1 output low level control NMOS pipe Q11 cut-off by its first lower end grid, so just, can carry out step-down processing to the input voltage of the second buck module 106.In said process, the electrical input VCC that supplies of the first supply module 101 is the first battery charge controller U6 power supply from the output introducing direct current of the second buck module 106, the first battery charge controller U6 just carries out Charge Management to the storage battery in the first supply module 101, and export high level as switch controlling signal driving positive-negative-positive triode Q14 conducting, the first supply module 101 can be charge in batteries from the negative electrode introducing direct current of diode D2 by its input IN2, and in the time that charge in batteries completes, the first battery charge controller U6 can output low level make positive-negative-positive triode Q14 cut-off as switch controlling signal, now the first supply module 101 in completely standby electricity condition.

From foregoing, the in the situation that of the second supply module 102 normal work, storage battery in the first supply module 101 is always in standby electricity condition (in preparation power supply state), because the output voltage of the second supply module 102 is higher than the voltage of the output DC2 of the first supply module 101, the first metal-oxide-semiconductor controller U1 in the second metal-oxide-semiconductor controller U2 in the second redundant control module 104 and the first redundant control module 103 through voltage ratio after, the output Gate of the second metal-oxide-semiconductor controller U2 can export high level control NMOS pipe Q3 and NMOS pipe Q4 conducting, and the output Gate of the first metal-oxide-semiconductor controller U1 can manage Q1 and NMOS pipe Q2 cut-off by output low level control NMOS, so, now to be powered for industrial automation control appliance 200 by the second supply module 102, when the second supply module 102 is during because of power supply buses power-off or its internal fault power-off, the output Gate of the second metal-oxide-semiconductor controller U2 can manage Q3 and NMOS pipe Q4 cut-off by output low level control NMOS, and the output Gate of the first metal-oxide-semiconductor controller U1 can export high level control NMOS pipe Q1 and NMOS pipe Q2 conducting, is now that industrial automation control appliance 200 is powered by the storage battery in the first supply module 101.

Therefore, by making the first supply module 101 and the second supply module 102 be respectively battery feed circuit and power circuit, still can be to the redundant power supply control of industrial automation control appliance 200 in the situation that only having a road power supply buses, to ensure that industrial automation control appliance 200 normally works under stable and lasting condition of power supply.

embodiment tri-:

Fig. 7 shows the modular structure of the redundant power electric power system that third embodiment of the invention provides, and for convenience of explanation, only shows the part relevant to third embodiment of the invention, and details are as follows:

The implementation that the redundant power electric power system that the present embodiment provides is the redundant power electric power system 100 shown in Fig. 1 in the time that the first supply module 101 and the second supply module 102 are all power circuit, the present embodiment is maintaining under the prerequisite of the each module annexation shown in Fig. 1 and Fig. 2 and each inside modules structure, and redundant power electric power system 100 has also further realized following annexation:

The equal sky of switch control end of the switch control end of the first switch module 107 and second switch module 108 connects, and the output of the output of the first switch module 107 and second switch module 107 also equal sky connects, and the input IN1 of the first supply module 101 is connected respectively the first power supply buses and the second power supply buses with the input IN2 of the second supply module 102.

Because the first above-mentioned supply module 101 and the second supply module 102 are all power circuit, so it is identical that its internal structure provides with first embodiment of the invention and the second embodiment, and in the present embodiment, the first buck module 105, the second buck module 106, the first switch module 107 and second switch module 108 all quit work.

Redundant power electric power system 100(the present embodiment being provided below in conjunction with operation principle is as shown in Figure 8) be described further:

The first supply module 101 and the second supply module 102 are exported respectively direct current to the first redundant control module 103 and the second redundant control module 104, the first metal-oxide-semiconductor controller U1 in the first redundant control module 103 can compare the voltage of the power end of the output voltage of the first supply module 101 and industrial automation control appliance 200, simultaneously, the second metal-oxide-semiconductor controller U2 in the second redundant control module 104 can compare the voltage of the power end of the output voltage of the second supply module 102 and industrial automation control appliance 200, in the initial power supply moment, because the output voltage of the first supply module 101 and the output voltage of the second supply module 102 are all higher than the voltage of the power end of industrial automation control appliance 200, so the first metal-oxide-semiconductor controller U1 can export high level and make NMOS pipe Q1 and NMOS pipe Q2 conducting simultaneously, the second metal-oxide-semiconductor controller U2 also can export high level simultaneously and make NMOS pipe Q3 and NMOS pipe Q4 conducting simultaneously, now the first supply module 101 and the second supply module 102 are powered for industrial automation control appliance 200 simultaneously, afterwards along with the output voltage of the first supply module 101 and the second supply module 102 raises gradually, can there is because step-up ratio is separately different dividing of height in both output voltages.So, when the output voltage of the first supply module 101 is during higher than the output voltage of the second supply module 102, the first metal-oxide-semiconductor controller U1 can learn that the output voltage of the first supply module 101 is greater than the voltage of the power end of industrial automation control appliance 200 by judgement, and from its output Gate output high level driving N metal-oxide-semiconductor Q1 and NMOS pipe Q2 conducting simultaneously, and the voltage that the output voltage of the second supply module 102 is less than the power end of industrial automation control appliance 200 is judged in the second metal-oxide-semiconductor controller U2 meeting simultaneously because the voltage of the power end of industrial automation control appliance 200 equals the output voltage of the first supply module 101, and from its output Gate output low level, NMOS pipe Q3 and NMOS pipe Q4 are ended simultaneously, so, powered to industrial automation control appliance 200 by the first supply module 101, otherwise, when the output voltage of the second supply module 102 is during higher than the output voltage of the first supply module 101, the second metal-oxide-semiconductor controller U2 can export high level driving N metal-oxide-semiconductor Q3 and NMOS pipe Q4 conducting simultaneously, the first metal-oxide-semiconductor controller U1 meeting output low level control NMOS pipe Q1 and NMOS pipe Q2 end simultaneously simultaneously, so, powered for industrial automation control appliance 200 by the second supply module 102.

In the present embodiment, by the first supply module 101 is connected respectively to the first power supply buses and the second power supply buses with the second supply module 102, under the condition that possesses duplex feeding bus, realize the object that industrial automation control appliance 200 is carried out to redundant power supply control.

embodiment tetra-:

Fig. 9 shows the modular structure of the redundant power electric power system that fourth embodiment of the invention provides, and for convenience of explanation, only shows the part relevant to fourth embodiment of the invention, and details are as follows:

The implementation that the redundant power electric power system that the present embodiment provides is the redundant power electric power system 100 shown in Fig. 1 in the time that the first supply module 101 and the second supply module 102 are all battery feed circuit, the present embodiment is maintaining under the prerequisite of the each module annexation shown in Fig. 1 and Fig. 2 and each inside modules structure, and redundant power electric power system 100 has also further realized following annexation:

The equal sky of input IN2 of the input IN1 of the first supply module 101 and the second supply module 102 connects, and the output of the output of the first switch module 107 and second switch module 108 also all sky connect.

Wherein, the first supply module 101 and the second supply module 102 are all battery feed circuit, be that both are all the power supply circuits taking storage battery as core power supply component, storage battery can be the battery that lithium battery, lead-acid battery, Ni-MH battery and lithium polymer battery etc. possess electric energy and charge and discharge characteristic, and in the present embodiment, the first buck module 105, the second buck module 106, the first switch module 107 and second switch module 108 all quit work.

Consistent with shown in Fig. 2 of the circuit structure of the redundant power electric power system 100 that the present embodiment provides, therefore repeats no more.

The redundant power electric power system 100 the present embodiment being provided below in conjunction with operation principle is described further:

The first supply module 101 and the second supply module 102 are exported respectively direct current to the first redundant control module 103 and the second redundant control module 104, the first metal-oxide-semiconductor controller U1 in the first redundant control module 103 can compare the voltage of the power end of the output voltage of the first supply module 101 and industrial automation control appliance 200, simultaneously, the second metal-oxide-semiconductor controller U2 in the second redundant control module 104 can compare the voltage of the power end of the output voltage of the second supply module 102 and industrial automation control appliance 200, in the initial power supply moment, because the output voltage of the first supply module 101 and the output voltage of the second supply module 102 are all higher than the voltage of the power end of industrial automation control appliance 200, so the first metal-oxide-semiconductor controller U1 can export high level and make NMOS pipe Q1 and NMOS pipe Q2 conducting simultaneously, the second metal-oxide-semiconductor controller U2 also can export high level simultaneously and make NMOS pipe Q3 and NMOS pipe Q4 conducting simultaneously, now the first supply module 101 and the second supply module 102 are powered for industrial automation control appliance 200 simultaneously, afterwards along with the output voltage of the first supply module 101 and the second supply module 102 reduces gradually, both output voltage can be because electric weight be different and have dividing of height separately.So (, when the output voltage of the first supply module 101 is during higher than the output voltage of the second supply module 102, the first metal-oxide-semiconductor controller U1 can learn that the output voltage of the first supply module 101 is greater than the voltage of the power end of industrial automation control appliance 200 by judgement, and from its output Gate output high level driving N metal-oxide-semiconductor Q1 and NMOS pipe Q2 conducting simultaneously, and the voltage that the output voltage of the second supply module 102 is less than the power end of industrial automation control appliance 200 is judged in the second metal-oxide-semiconductor controller U2 meeting simultaneously because the voltage of the power end of industrial automation control appliance 200 equals the output voltage of the first supply module 101, and from its output Gate output low level, NMOS pipe Q3 and NMOS pipe Q4 are ended simultaneously, so, powered to industrial automation control appliance 200 by the first supply module 101, otherwise, when the output voltage of the second supply module 102 is during higher than the output voltage of the first supply module 101, the second metal-oxide-semiconductor controller U2 can export high level driving N metal-oxide-semiconductor Q3 and NMOS pipe Q4 conducting simultaneously, the first metal-oxide-semiconductor controller U1 meeting output low level control NMOS pipe Q1 and NMOS pipe Q2 end simultaneously simultaneously, so, powered for industrial automation control appliance 200 by the second supply module 102.

In the present embodiment, by adopt battery feed circuit in the first supply module 101 and the second supply module 102 simultaneously, can without any need for power supply buses in the situation that, supply with industrial automation control appliance 200 is carried out to redundant power supply control using storage battery as power supply, promote the condition of power supply adaptive capacity of whole redundant power electric power system.

In sum, the embodiment of the present invention by adopting the first supply module in redundant power electric power system, the second supply module, the first redundant control module, the second redundant control module, the first buck module, the second buck module, the first switch module and second switch module, can in the situation that possessing duplex feeding bus, realize redundant power supply, can in the time only having a road power supply buses, can make described the first supply module and described the second supply module adopt respectively dissimilar power supply circuits to carry out redundant power mixed configuration again, and reach equally the object that industrial automation control appliance is realized to redundant power supply control, thereby solve prior art supporting duplex feeding bus with in realizing redundant power supply, cannot compatible only have the problem of in the situation of a road power supply buses power supply, industrial automation control appliance being carried out redundant power supply.

The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.

Claims

1. a redundant power electric power system, is connected with the power end of industrial automation control appliance, it is characterized in that, described redundant power electric power system comprises:

2. redundant power electric power system as claimed in claim 1, is characterized in that, described the first redundant control module comprises:

Resistance R 1, NMOS pipe Q1, NMOS pipe Q2 and the first metal-oxide-semiconductor controller;

The drain electrode of described NMOS pipe Q1 is the input of described the first redundant control module, the source electrode of described NMOS pipe Q1 connects the source electrode of described NMOS pipe Q2, the drain electrode of described NMOS pipe Q2 is the output of described the first redundant control module, described resistance R 1 is connected between the described NMOS pipe drain electrode of Q1 and the first voltage input end of described the first metal-oxide-semiconductor controller, the grid of the grid of described NMOS pipe Q1 and described NMOS pipe Q2 is connected to the output of described the first metal-oxide-semiconductor controller altogether, the second voltage input of described the first metal-oxide-semiconductor controller is connected with the drain electrode of described NMOS pipe Q2.

3. redundant power electric power system as claimed in claim 2, is characterized in that, described the second redundant control module comprises:

Resistance R 2, NMOS pipe Q3, NMOS pipe Q4 and the second metal-oxide-semiconductor controller;

The drain electrode of described NMOS pipe Q3 is the input of described the second redundant control module, the source electrode of described NMOS pipe Q3 connects the source electrode of described NMOS pipe Q4, the drain electrode of described NMOS pipe Q4 is the output of described the second redundant control module, described resistance R 2 is connected between the described NMOS pipe drain electrode of Q3 and the first voltage input end of described the second metal-oxide-semiconductor controller, the grid of the grid of described NMOS pipe Q3 and described NMOS pipe Q4 is connected to the output of described the second metal-oxide-semiconductor controller altogether, the second voltage input of described the second metal-oxide-semiconductor controller is connected with the drain electrode of described NMOS pipe Q4.

4. redundant power electric power system as claimed in claim 3, is characterized in that, described the first buck module comprises:

The drain electrode of described NMOS pipe Q5 is the input of described the first buck module, described capacitor C 1 is connected between the drain electrode and ground of described NMOS pipe Q5, the drain electrode of the source electrode of described NMOS pipe Q5 and described NMOS pipe Q6 is connected to the first end of described inductance L 1 altogether, the source electrode of the source electrode of described NMOS pipe Q6 and described NMOS pipe Q7 is connected to the first end of described resistance R 3 altogether, the second end ground connection of described resistance R 3, the described NMOS pipe drain electrode of Q7 and the second end of described inductance L 1 are connected to the source electrode of described NMOS pipe Q8 altogether, the drain electrode of described NMOS pipe Q8 is the output of described the first buck module, described capacitor C 2 is connected between the drain electrode and ground of described NMOS pipe Q8, the drain electrode of NMOS pipe Q8 described in the first termination of described resistance R 4, the second end of described resistance R 4 and the first end of described resistance R 5 are connected to the feedback reference voltage input pin of described the first buck controller U3 altogether, the second end ground connection of described resistance R 5, the positive pin of current detecting of described the first buck controller U3 bears with current detecting first end and the second end that pin is connected respectively described resistance R 3, the first top gate of described the first buck controller U3 drives pin, the second top gate drives pin, the first lower end grid drives pin and the second lower end grid to drive pin to manage respectively the grid of Q8 with described NMOS, the grid of described NMOS pipe Q5, the grid of the grid of described NMOS pipe Q7 and described NMOS pipe Q6 is connected, the power supply lower margin ground connection of described the first buck controller U3.

5. redundant power electric power system as claimed in claim 4, is characterized in that, the second buck module 106 comprises:

The drain electrode of described NMOS pipe Q9 is the input of described the second buck module, described capacitor C 3 is connected between the drain electrode and ground of described NMOS pipe Q9, the drain electrode of the source electrode of described NMOS pipe Q9 and described NMOS pipe Q10 is connected to the first end of described inductance L 2 altogether, the source electrode of the source electrode of described NMOS pipe Q10 and described NMOS pipe Q11 is connected to the first end of described resistance R 6 altogether, the second end ground connection of described resistance R 6, the described NMOS pipe drain electrode of Q11 and the second end of described inductance L 2 are connected to the source electrode of described NMOS pipe Q12 altogether, the drain electrode of described NMOS pipe Q12 is the output of described the second buck module, described capacitor C 4 is connected between the drain electrode and ground of described NMOS pipe Q12, the drain electrode of NMOS pipe Q12 described in the first termination of described resistance R 7, the second end of described resistance R 7 and the first end of described resistance R 8 are connected to the feedback reference voltage input pin of described the second buck controller U4 altogether, the second end ground connection of described resistance R 8, the positive pin of current detecting of described the second buck controller U4 bears with current detecting first end and the second end that pin is connected respectively described resistance R 6, the first top gate of described the second buck controller U4 drives pin, the second top gate drives pin, the first lower end grid drives pin and the second lower end grid to drive pin to manage respectively the grid of Q12 with described NMOS, the grid of described NMOS pipe Q9, the grid of the grid of described NMOS pipe Q11 and described NMOS pipe Q10 is connected, the power supply lower margin ground connection of described the second buck controller U4.

6. redundant power electric power system as claimed in claim 5, it is characterized in that, described the first switch module comprises resistance R 9, NPN type triode Q13 and diode D1, the first end of described resistance R 9 is the input of described the first switch module, the emitter of described NPN type triode Q13 connects the second end of described resistance R 9, the base stage of described NPN type triode Q13 is the switch control end of described the first switch module, the collector electrode of described NPN type triode Q13 connects the anode of described diode D1, and the negative electrode of described diode D1 is the output of described the first switch module.

7. redundant power electric power system as claimed in claim 6, it is characterized in that, second switch module comprises resistance R 10, NPN type triode Q14 and diode D2, the first end of described resistance R 10 is the input of described second switch module, the emitter of described NPN type triode Q14 connects the second end of described resistance R 10, the base stage of described NPN type triode Q14 is the switch control end of described second switch module, the collector electrode of described NPN type triode Q14 connects the anode of described diode D2, and the negative electrode of described diode D2 is the output of described second switch module.

8. the redundant power electric power system as described in claim 1 to 7 any one, it is characterized in that, in the time that described the first supply module and described the second supply module are all described power circuit, the equal sky of switch control end of the switch control end of described the first switch module and described second switch module connects, and the output of the output of described the first switch module and described second switch module also equal sky connects, and the input of the input of described the first supply module and described the second supply module is connected respectively the first power supply buses and the second power supply buses.

9. the redundant power electric power system as described in claim 1 to 7 any one, it is characterized in that, in the time that described the first supply module and described the second supply module are all described battery feed circuit, the equal sky of input of the input of described the first supply module and described the second supply module connects, and the output of the output of described the first switch module and described second switch module also all sky connect.