CN103580458A - Method and device for controlling capacitor charging circuit and capacitor charging circuit - Google Patents

Method and device for controlling capacitor charging circuit and capacitor charging circuit Download PDF

Info

Publication number
CN103580458A
CN103580458A CN201210262606.3A CN201210262606A CN103580458A CN 103580458 A CN103580458 A CN 103580458A CN 201210262606 A CN201210262606 A CN 201210262606A CN 103580458 A CN103580458 A CN 103580458A
Authority
CN
China
Prior art keywords
voltage
branch road
power supply
capacitor
capacitor charging
Prior art date
Application number
CN201210262606.3A
Other languages
Chinese (zh)
Inventor
陈翀
宋德超
刘访
赫晓龙
Original Assignee
珠海格力电器股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 珠海格力电器股份有限公司 filed Critical 珠海格力电器股份有限公司
Priority to CN201210262606.3A priority Critical patent/CN103580458A/en
Publication of CN103580458A publication Critical patent/CN103580458A/en

Links

Abstract

The invention provides a method and device for controlling a capacitor charging circuit and the capacitor charging circuit. The capacitor charging circuit comprises a first voltage detection device, a first branch circuit, a second branch circuit and a controller, wherein the first voltage detection device is connected with a capacitor and used for measuring capacitor voltage; the first branch circuit is connected between a power supply and the capacitor; the second branch circuit is in parallel connection with the first branch circuit; the controller is respectively connected with the first voltage detection device, the first branch circuit and the second branch circuit and is used for controlling the first branch circuit to be connected and controlling the second branch circuit to be disconnected, charging the capacitor through the first branch circuit, obtaining the capacitor voltage measured by the first voltage detection device in real time, judging whether the capacitor voltage reaches a first preset threshold, and controlling the second branch circuit to be connected when the capacitor voltage reaches the first preset threshold. Accordingly, the capacitor charging actual conditions are obtained by detecting the actual voltage of the capacitor, the capacitor charging circuit is controlled according to the capacitor charging actual working conditions, the problem of capacitor over charging or insufficient charging is solved, and the reliability of the capacitor and the power supply is improved.

Description

The control method of capacitor charging circuit and control device and capacitor charging circuit
Technical field
The present invention relates to control field, in particular to a kind of control method and control device and capacitor charging circuit of capacitor charging circuit.
Background technology
High-voltage electrolytic capacitor is conventional device in power supply circuits, for voltage stabilizing and filter action, in circuit, high-voltage capacitance is generally connected to the output of power supply circuits, in parallel with load, while powering on, first by charge circuit, capacitor is charged, to avoid the large impact electric current of powered on moment to cause harmful effect to other element in power supply circuits with for electric loading.
Control method to capacitor charging circuit in prior art, is generally in advance according to the parameter of electric capacity and charge circuit, calculates the time that capacitor charging needs.At capacitor charging time, reach the charging interval during theoretical value, judge that capacitor charging completes.
But, the parameter of capacitance parameter, charge circuit, actual working environment all can affect the actual time completing of capacitor charging, and along with the growth of capacitance operation time, the parameter of capacitance parameter, charge circuit all can change, and actual working environment as temperature, dust situation be all to change in real time.Therefore according to the charging of capacitor charging time calculated value control capacitance can cause capacitor charging deficiency or the charging interval long, the functional reliability of electric capacity and power supply circuits is reduced, when serious, even can damage capacitor or other circuit devcie.
Problem for causing the functional reliability of electric capacity and power supply circuits to reduce according to the method for fixing charging interval control capacitance charging in prior art, not yet proposes effective solution at present.
Summary of the invention
The present invention aims to provide a kind of control method and control device and capacitor charging circuit of capacitor charging circuit, to solve the problem that causes the functional reliability of electric capacity and power supply circuits to reduce according to the method for fixing charging interval control capacitance charging in prior art.
To achieve these goals, according to an aspect of the present invention, provide a kind of capacitor charging circuit.This capacitor charging circuit comprises: the first voltage check device, is connected with electric capacity, for measuring the voltage of electric capacity; The first branch road, is connected between power supply and electric capacity, for providing path to capacitor charging; The second branch road, with the first branch circuit parallel connection, provides path for powering to the load; Controller, is connected respectively with the first voltage check device, the first branch road, the second branch road, and for controlling, the first branch road is connected and the second branch road disconnects, by first road direction capacitor charging, and the capacitance voltage that Real-time Obtaining the first voltage check device measures; Judge whether capacitance voltage reaches the first predetermined threshold value; When capacitance voltage reaches the first predetermined threshold value, control the second branch road and connect.
Further, the first branch road comprises: current-limiting apparatus and the first switch, and wherein, current-limiting apparatus, is connected between power supply and electric capacity; The first switch is connected with current-limiting apparatus, and the control end of the first switch is connected with controller, for controlling the break-make of the first branch road.
Further, the second branch road comprises: second switch, be connected between power supply and electric capacity, and the control end of second switch is connected with controller, for controlling the break-make of the second branch road.
Further, capacitor charging circuit provided by the invention also comprises second voltage checkout gear, is connected respectively, for measuring the voltage of power supply with power supply with controller; Controller is also for arranging the first predetermined threshold value according to the voltage of power supply.
Further, power supply is communication power supply, is also provided with rectifying device between power supply and electric capacity, and it is the DC power supply to capacitor charging by communication power supply rectification that rectifying device is used for.
Further, the first branch road and the second branch road are arranged between communication power supply and rectifying device.
A kind of control method of capacitor charging circuit is provided according to a further aspect in the invention.The control method of this capacitor charging circuit comprises: control the first branch road connection and the second branch road and disconnect, by first road direction capacitor charging; Obtain the capacitance voltage that the first voltage check device measures; Judge whether capacitance voltage reaches the first predetermined threshold value; When capacitance voltage reaches the first predetermined threshold value, control the second branch road and connect.
Further, also comprise after obtaining the capacitance voltage that the first voltage check device measures: judge that capacitance voltage did not increase in the whether lasting scheduled time and this capacitance voltage is less than the second predetermined threshold value; In capacitance voltage continues the scheduled time, do not increase and when this capacitance voltage is less than the second predetermined threshold value, control described the first branch road and described the second branch road disconnects, and output alarm signal.
Further, also comprise after obtaining the capacitance voltage that the first voltage check device measures: obtain the voltage of the power supply that second voltage checkout gear measures, according to the voltage of described power supply, described the first predetermined threshold value is set.
A kind of control device of capacitor charging circuit is provided according to a further aspect in the invention.The control device of this capacitor charging circuit, comprising: charging starts control module, and for controlling, the first branch road is connected and the second branch road disconnects, by first road direction capacitor charging; Voltage acquisition module, the capacitance voltage measuring for obtaining the first voltage check device; Judge module, for judging whether capacitance voltage reaches the first predetermined threshold value; The control module of having charged, for when capacitance voltage reaches the first predetermined threshold value, controls the second branch road and connects.
Apply technical scheme of the present invention, capacitor charging circuit of the present invention comprises: the first voltage check device, is connected to electric capacity two ends, for measuring the voltage of electric capacity; The first branch road, is connected between power supply and electric capacity, for providing path to capacitor charging; The second branch road, with the first branch circuit parallel connection, provides path for powering to the load; Controller, is connected respectively with the first voltage check device, the first branch road, the second branch road, and for controlling, the first branch road is connected and the second branch road disconnects, by first road direction capacitor charging, and the capacitance voltage that Real-time Obtaining the first voltage check device measures; Judge whether capacitance voltage reaches the first predetermined threshold value; When capacitance voltage reaches the first predetermined threshold value, control the second branch road and connect.In capacitor charging process, the first branch road is closed, the second branch road disconnects, and power supply is by first road direction electric capacity, the voltage of the real-time Detection capacitance of the first voltage check device, when capacitance voltage reaches charging target voltage, control the second branch road according to connection, complete the charging process to electric capacity, disconnect the first branch road, power supply circuits complete the preparation to load supplying, can power to load at any time.Thereby by the virtual voltage of Detection capacitance, obtain the actual conditions of the charging of electric capacity, thereby according to the actual condition control capacitance charging circuit of capacitor charging, the electric capacity of having avoided producing according to time control capacitance charging overcharges or the problem of charge less, has improved the reliability of electric capacity and power supply.
Accompanying drawing explanation
The Figure of description that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is according to the schematic diagram of the capacitor charging circuit of first embodiment of the invention;
Fig. 2 is according to the schematic diagram of the capacitor charging circuit of second embodiment of the invention;
Fig. 3 is according to the schematic diagram of the capacitor charging circuit of second embodiment of the invention;
Fig. 4 is according to the schematic diagram of the control device of the capacitor charging circuit of the embodiment of the present invention;
Fig. 5 is according to the schematic diagram of the control method of the capacitor charging circuit of the embodiment of the present invention;
Fig. 6 is the flow chart of the control method of capacitor charging circuit according to the preferred embodiment of the invention.
Embodiment
It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
The embodiment of the present invention provides a kind of capacitor charging circuit, Fig. 1 is according to the schematic diagram of the capacitor charging circuit of first embodiment of the invention, as shown in Figure 1, the capacitor charging circuit of the first embodiment of the present invention comprises: the first voltage check device 13, be connected with capacitor C 1, for measuring the voltage of capacitor C 1; The first branch road 11, is connected between power supply 15 and capacitor C 1, for providing path to capacitor C 1 charging; The second branch road 12, in parallel with the first branch road 11, for providing path to load 16 power supplies; Controller 14, is connected respectively with the first voltage check device 13, the first branch road 11, the second branch road 12, for according to voltage control first branch road 11 of capacitor C 1 and the break-make of the second branch road 12.In capacitor charging process, the first branch road 11 closures, the second branch road 12 disconnects, and power supply 15 is the voltage to capacitor C 1, the first voltage check device 13 real-time Detection capacitance C1 by the first branch road 11, when capacitance voltage reaches charging target voltage, control the second branch road 12 closures, complete the charging process to electric capacity, disconnect the first branch road 11, power supply circuits complete the preparation to load supplying, can power to load at any time.
Adopt the technical scheme of the capacitor charging circuit of the first embodiment, by the virtual voltage of Detection capacitance, obtain the actual conditions of the charging of electric capacity, thereby according to the actual condition control capacitance charging circuit of capacitor charging, the electric capacity of having avoided producing according to time control capacitance charging overcharges or the problem of charge less, has improved the reliability of electric capacity and power supply.
Due to the initial stage of electric capacity in charging, can produce larger impulse current, for each components and parts of power supply circuits have brought adverse effect, the first branch road 11 of the capacitor charging circuit of first embodiment of the invention can comprise: current-limiting apparatus 111 and the first K switch 1, wherein, current-limiting apparatus 111 is connected between power supply 15 and capacitor C 1; The first K switch 1 is connected in series with current-limiting apparatus 111, and the control end of the first K switch 1 is connected with controller 14, for controlling the break-make of described the first branch road 11.
The effect of current-limiting apparatus 111 is sizes of controlling charging current, for the not high occasion of charging current required precision, can use resistor as current-limiting apparatus 111, the resistance size of resistor is set according to the voltage of power supply and the capacitance of capacitor C 1 and the restriction of charging current.At the higher applied environment of charging current required precision, current-limiting apparatus 111 can be used constant current source apparatus, guarantees that the charging current of electric capacity is constant.Obviously, current-limiting apparatus 111 can be used the device of various Limited Current sizes, and the cost of resistor is lower, but the charging process meeting evolution of heat, size of current is uncontrollable, and the cost of constant-current source is high, but electric current is controlled, and can guarantee the constant of charging current.
The first K switch 1 can be used relay or other contactor device with control end, under the control at controller 14, the first branch road 11 being carried out closure and turn-offs operation, thereby makes the first branch road 11 inputs or out of service.Owing to there is current-limiting apparatus 111 in the first branch road 11, after being full of, capacitor C 1 still by the first branch road 11, to load 16, powers, can cause the waste of electric energy, therefore, after capacitor C 1 is full of, control the second branch road 12 and connect, by the second branch road 12, to load 16, powered.
The second branch road 12 can comprise: second switch K2, be connected between power supply 15 and capacitor C 1, and the control end of second switch K2 is connected with controller 14, for controlling the break-make of described the second branch road 12.Second switch K2 can be used relay or other contactor device with control end, under the control at controller 14, the second branch road 12 being carried out closure and turn-offs operation, thereby makes the second branch road 12 inputs or out of service.
In the first branch road 11 and the second branch road 12, protective device can also be set respectively in addition, for the curtage when circuit, occur when abnormal, disconnecting corresponding branch road so that circuit is protected.
In different power supply circuits, power supply 15 may be AC power or DC power supply, and capacitor C 1 completes voltage corresponding to when charging so also difference, if power supply 15 for voltage effective value be V acalternating voltage time, theoretical voltage value when capacitor C 1 has been charged should be V acif, power supply 15 for voltage be V dcdirect voltage time, theoretical voltage value when capacitor C 1 has been charged should be V dc, due to the situation of actual capacitance, likely there is certain fluctuation in the voltage after capacitor C 1 charging, can set suitable voltage threshold by controller, capacitor C 1 both end voltage within the scope of the voltage threshold of setting time, can think that electric capacity is full of, and power supply circuits are in being ready to complete state.
That is to say, in the situation that the input voltage of capacitor charging circuit and the type of output voltage are, exchange or direct current, when the input voltage of capacitor charging circuit equates with output voltage, can judge that capacitor charging completes.
The ac-dc conversion circuit of air-conditioning DC frequency-changing machine for example in some specific power supply circuits, require power supply be AC power but exporting electric energy is direct current, capacitor C 1 strobes in DC side, for meeting this situation, the invention allows for the capacitor charging circuit of the second embodiment, Fig. 2 is according to the schematic diagram of the capacitor charging circuit of second embodiment of the invention, as shown in Figure 2, the capacitor charging circuit of second embodiment of the invention has increased rectifying device 21 on the basis of the first embodiment, this rectifying device 21 is for by communication power supply 15 rectifications being the DC power supply to capacitor C 1 charging.The magnitude of voltage of supposing communication power supply 15 is V ac, the charging of capacitor C 1 completes theoretical value and also should be
In Fig. 2, the first branch road 11 is only shown and the second branch road 12 is arranged on the situation between communication power supply 15 and rectifying device 21, in this case, the break-make of the first branch road 11 and the second branch road 12 can be controlled equally the input of rectifying device or exit.
In addition, can also there be the second form in the capacitor charging loop of second embodiment of the invention, namely the first branch road 11 and the second branch road 12 are arranged between rectifying device 21 and capacitor C 1, in this case, power supply 15 is converted to direct current by rectifying device 21 by interchange, the break-make of the first branch road 11 and the second branch road 12 is only controlled by the break-make of the DC power supply after rectifying device, uncontrollable rectifying device 21.
Whether two kinds of forms of above the second embodiment, can need control to arrange flexibly according to rectifying device 21.Thereby improved the flexibility of power supply circuits operational modes.
The capacitor charging circuit of third embodiment of the invention detects the voltage of power supply in real time, and the voltage that utilizes power supply judges whether electric capacity has charged, Fig. 3 is according to the schematic diagram of the capacitor charging circuit of second embodiment of the invention, as shown in Figure 3, compare with the capacitor charging circuit of first embodiment of the invention, the capacitor charging circuit of the 3rd embodiment also comprises second voltage checkout gear 31, is connected respectively, for measuring the voltage of power supply with power supply with controller; Controller is also for arranging the first predetermined threshold value according to the voltage of power supply.When power supply 15 is AC power, the voltage effective value that second voltage checkout gear 31 measures is V actime, theoretical voltage value when capacitor C 1 has been charged should be V ac, when power supply 15 is DC power supply, the voltage that second voltage checkout gear 31 measures is V dctime, theoretical voltage value when capacitor C 1 has been charged should be V dc.Theoretical voltage value when controller 14 has charged according to capacitor C 1 is set the first suitable predetermined threshold value.
Equally, the second voltage checkout gear 31 of the capacitor charging circuit of third embodiment of the invention also adds in the capacitor charging circuit of the second embodiment.The voltage effective value value of the communication power supply 15 that in this case, second voltage checkout gear 31 measures is V ac, the charging of capacitor C 1 completes theoretical value and also should be controller 14 bases set the first suitable predetermined threshold value.
By second voltage checkout gear 31, can according to the situation of supply voltage, judge whether capacitor C 1 has charged in real time, thus more accurate.
The embodiment of the present invention also provides a kind of control device of capacitor charging circuit, for the capacitor charging circuit of above embodiment is controlled, Fig. 4 is according to the schematic diagram of the control device of the capacitor charging circuit of the embodiment of the present invention, as shown in Figure 4, the control device of the embodiment of the present invention comprises: charging starts control module 41, be used for controlling the first branch road 11 connections and the second branch road 12 and disconnect, by the first branch road 11, to capacitor C 1, charge; Voltage acquisition module 43, capacitor C 1 voltage measuring for obtaining the first voltage check device 13; Judge module 45, for judging whether capacitance voltage reaches the first predetermined threshold value; Charging finishing control module 47, for when capacitance voltage reaches the first predetermined threshold value, controls the second branch road 12 and connects.
By above-mentioned control device control capacitance charging circuit, first by charging, start control module 41 and control the first branch road 11 connections, by the first branch road 11, to capacitor C 1, charge, then by voltage acquisition module 43, obtained the real-time voltage value of capacitor C 1, judge module 45 judges this real-time voltage value and the first predetermined threshold value, when this real-time voltage value arrives the first predetermined threshold value, by charging finishing control module 47, control the second branch roads 12 and connect, by the second branch road 12, powered for load.After other the second branch road 12 is connected, electric current is completed after switching to the second branch road by the first branch road 11, can control the first branch road 11 and disconnect.
Theoretical voltage value when above-mentioned the first predetermined threshold value can have been charged according to above-mentioned capacitor C 1 arranges, when reaching 90%, 95% or other multiple of this theoretical voltage value, thereby when the voltage of capacitor C 1 reaches 90%, 95% or other multiple of the theoretical voltage value of having charged, just can control the second branch road 12 and connect, carry out branch road switching.
The control device of the capacitor charging circuit of the embodiment of the present invention can also comprise, power supply acquisition module, for obtaining the voltage of the power supply that second voltage checkout gear measures, judge module 45 is also for arranging described the first predetermined threshold value according to the voltage of described power supply.
Preferably, the control device of the capacitor charging circuit of the embodiment of the present invention can also comprise: the second judge module, for judging that capacitance voltage did not increase in the whether lasting scheduled time and this capacitance voltage is less than the second predetermined threshold value; Alarm output module, for working as, voltage did not increase in the whether lasting scheduled time and this voltage is less than the second predetermined threshold value, output alarm signal.By the second judge module and alarm output module are set, can judge the operating mode of electric capacity, if there is capacitor C 1 electric capacity, continue not increase and continue for some time and show that electric capacity cannot charge, related device circuit breaks down, now output alarm signal is reminded, and by controlling the first branch road and the second branch road all disconnects, stop to electric capacity and load supplying, to prevent more serious consequence.The means such as concrete type of alarm can use sound, light, code demonstration.
The embodiment of the present invention also provides a kind of control method of capacitor charging circuit, by the control device of the capacitor charging circuit of above embodiment, is carried out, and for the capacitor charging circuit to above-described embodiment, controls.Fig. 5 is according to the schematic diagram of the control method of the capacitor charging circuit of the embodiment of the present invention, and as shown in Figure 5, the control method of the capacitor charging circuit of the embodiment of the present invention comprises:
Step S51, controls the first branch road 11 connections and the second branch road 12 and disconnects, and by the first branch road 11, to capacitor C 1, charges; Step S53, obtains capacitor C 1 voltage that the first voltage check device 13 measures; Step S55, judges whether voltage reaches the first predetermined threshold value; Step S47, when voltage reaches the first predetermined threshold value, controls the second branch road 12 and connects.
Adopt the control method of the capacitor charging circuit of the embodiment of the present invention, first controlling the first branch road 11 connects with to capacitor charging, according to capacitor C, whether 1 voltage judgement charging completes, when voltage reaches the first predetermined threshold value, control the second branch road 12 and connect, thereby powered to load 16 by the second branch road 12.The size of the first predetermined threshold value wherein, the theoretical value that can complete according to capacitor charging arranges.Such as 90% or 95% of theoretical value.
After step S53, can also comprise: judge that capacitance voltage did not increase in the whether lasting scheduled time and this voltage is less than the second predetermined threshold value; In capacitance voltage continues the scheduled time, do not increase and when this voltage is less than the second predetermined threshold value, control the first branch road 11 and the second branch road 12 disconnects, and output alarm signal.Thereby whether the charging of Detection capacitance is normal, in the situation that electric capacity cannot charge normal, timely output alarm signal, by controlling the first branch road 11 and the second branch road 12 disconnects stopping to electric capacity and load supplying.
After step S53, the control method of the capacitor charging circuit of the embodiment of the present invention can also comprise: the voltage that obtains the power supply that second voltage checkout gear measures; According to the voltage of described power supply, described the first predetermined threshold value is set.Utilize the power supply voltage obtaining in real time to judge whether electric capacity has charged.
The ac-dc conversion circuit of air-conditioning DC frequency-changing machine of take is below example, flow process to the control method of the capacitor charging circuit of the embodiment of the present invention is elaborated by reference to the accompanying drawings, Fig. 6 is the flow chart of the control method of capacitor charging circuit according to the preferred embodiment of the invention, as shown in Figure 6, the flow process of the control method of the capacitor charging circuit of the preferred embodiment of the present invention is:
Capacitor charging starts, and by first K switch 1 Closed control the first branch road, connects, and opens control the second branch road disconnect by second switch K2, and power supply 15 charges to capacitor C 1 by the first branch road 11;
By the magnitude of voltage Vout of the first voltage check device 13 Real-Time Monitoring capacitor C 1;
Judge whether Vout is less than the second predetermined threshold value V2, if Vout < is V2, judge whether Vout increases, if Vout >=V2 or Vout change, enter next step, if Vout continues not change in preset time t 1, output alarm signal.
Judge whether Vout reaches the first predetermined threshold value V1, if during Vout < V1, return to the step of Real-Time Monitoring capacitance voltage value,
If Vout >=V1, charging process completes, and by second switch K2 Closed control the second branch road, connects, and power supply 15, is opened control the first branch road by the first K switch 1 after current switching completes and disconnected to load 16 power supplies by the second branch road 12.
Suppose AC-input voltage Vac=220V, after rectifying device 21, the voltage theoretical value that electric capacity is full of after electricity should be V oUT=220*1.414 ≈ 310V.Control the first branch road 11 closures to capacitor charging, the charging voltage of Detection capacitance, when measured value reaches 95% of 310V and is about 295V, thinks that voltage is full of, and controls the second branch road 12 closures, and the first branch road 11 disconnects.If occur in charging process that continuous 2 seconds magnitudes of voltage of capacitor C 1 do not increase, and lower than 100V, think and electric capacity fault show failure code, need reminding user maintenance.
Above embodiment all be take single phase circuit and is described as example, and capacitor charging circuit of the present invention can be applied in the three phase supply circuit that comprises high-voltage capacitance equally.
Apply technical scheme of the present invention, the capacitor charging circuit of the embodiment of the present invention comprises: the first voltage check device, is connected to electric capacity two ends, for measuring the voltage of electric capacity; The first branch road, is connected between power supply and electric capacity, for providing path to capacitor charging; The second branch road, with the first branch circuit parallel connection, provides path for powering to the load; Controller, is connected respectively with the first voltage check device, the first branch road, the second branch road, and for controlling, the first branch road is connected and the second branch road disconnects, by first road direction capacitor charging, and the capacitance voltage that Real-time Obtaining the first voltage check device measures; Judge whether voltage reaches the first predetermined threshold value; When capacitance voltage reaches the first predetermined threshold value, control the second branch road and connect.In capacitor charging process, the first branch road is closed, the second branch road disconnects, and power supply is by first road direction electric capacity, the voltage of the real-time Detection capacitance of the first voltage check device, when electric capacity capacitance voltage reaches charging target voltage, control the second branch road closed, complete the charging process to electric capacity, disconnect the first branch road, power supply circuits complete the preparation to load supplying, can power to load at any time.Thereby by the virtual voltage of Detection capacitance, obtain the actual conditions of the charging of electric capacity, thereby according to the actual condition control capacitance charging circuit of capacitor charging, the electric capacity of having avoided producing according to time control capacitance charging overcharges or the problem of charge less, has improved the reliability of electric capacity and power supply.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in storage device and be carried out by calculation element, or they are made into respectively to each integrated circuit modules, or a plurality of modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims (10)

1. a capacitor charging circuit, is characterized in that, comprising:
The first voltage check device, is connected with electric capacity, for measuring the voltage of described electric capacity;
The first branch road, is connected between power supply and described electric capacity, for providing path to described capacitor charging;
The second branch road, with described the first branch circuit parallel connection, provides path for powering to the load;
Controller, be connected respectively with described the first voltage check device, described the first branch road, described the second branch road, being used for controlling the first branch road connection and described the second branch road disconnects, by described first road direction capacitor charging, the capacitance voltage that the first voltage check device measures described in Real-time Obtaining; Judge whether described capacitance voltage reaches the first predetermined threshold value; When described capacitance voltage reaches described the first predetermined threshold value, control described the second branch road and connect.
2. capacitor charging circuit according to claim 1, is characterized in that, described the first branch road comprises: current-limiting apparatus and the first switch, wherein,
Described current-limiting apparatus, is connected between power supply and described electric capacity;
Described the first switch is connected with described current-limiting apparatus, and the control end of described the first switch is connected with described controller, for controlling the break-make of described the first branch road.
3. capacitor charging circuit according to claim 2, is characterized in that, described the second branch road comprises:
Second switch, is connected in series between power supply and electric capacity, and the control end of described second switch is connected with described controller, for controlling the break-make of described the second branch road.
4. according to the capacitor charging circuit described in any one in claims 1 to 3, it is characterized in that, also comprise second voltage checkout gear, be connected with controller with power supply respectively, for measuring the voltage of described power supply; Described controller is also for arranging described the first predetermined threshold value according to the voltage of described power supply.
5. according to the capacitor charging circuit described in any one in claims 1 to 3, it is characterized in that, described power supply is communication power supply, between described power supply and described electric capacity, be also provided with rectifying device, it is the DC power supply to described capacitor charging by described communication power supply rectification that described rectifying device is used for.
6. capacitor charging circuit according to claim 5, is characterized in that, described the first branch road and described the second branch road are arranged between described communication power supply and described rectifying device.
7. a control method for capacitor charging circuit, is characterized in that, comprising:
Control the first branch road connection and described the second branch road and disconnect, by described first road direction capacitor charging;
Obtain the capacitance voltage that the first voltage check device measures;
Judge whether described capacitance voltage reaches the first predetermined threshold value;
When described capacitance voltage reaches described the first predetermined threshold value, control described the second branch road and connect.
8. control method according to claim 7, is characterized in that, also comprises after obtaining the capacitance voltage that the first voltage check device measures:
Judge that described capacitance voltage did not increase in the whether lasting scheduled time and this voltage is less than the second predetermined threshold value;
In described capacitance voltage continues the scheduled time, do not increase and when this voltage is less than described the second predetermined threshold value, control described the first branch road and described the second branch road disconnects, and output alarm signal.
9. control method according to claim 7, is characterized in that, also comprises after obtaining the capacitance voltage that the first voltage check device measures;
Obtain the voltage of the power supply that second voltage checkout gear measures;
According to the voltage of described power supply, described the first predetermined threshold value is set.
10. a control device for capacitor charging circuit, is characterized in that, comprising:
Charging starts control module, and for controlling, the first branch road is connected and described the second branch road disconnects, by described first road direction capacitor charging;
Voltage acquisition module, the capacitance voltage measuring for obtaining the first voltage check device;
Judge module, for judging whether described capacitance voltage reaches the first predetermined threshold value;
The control module of having charged, for when described capacitance voltage reaches described the first predetermined threshold value, controls described the second branch road and connects.
CN201210262606.3A 2012-07-26 2012-07-26 Method and device for controlling capacitor charging circuit and capacitor charging circuit CN103580458A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210262606.3A CN103580458A (en) 2012-07-26 2012-07-26 Method and device for controlling capacitor charging circuit and capacitor charging circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210262606.3A CN103580458A (en) 2012-07-26 2012-07-26 Method and device for controlling capacitor charging circuit and capacitor charging circuit

Publications (1)

Publication Number Publication Date
CN103580458A true CN103580458A (en) 2014-02-12

Family

ID=50051586

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201210262606.3A CN103580458A (en) 2012-07-26 2012-07-26 Method and device for controlling capacitor charging circuit and capacitor charging circuit

Country Status (1)

Country Link
CN (1) CN103580458A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106505846A (en) * 2016-11-15 2017-03-15 上海玖行能源科技有限公司 A kind of soft starting circuit and soft-start method and direct-current charging post
CN108267665A (en) * 2017-11-22 2018-07-10 珠海格力电器股份有限公司 Detection method, circuit, storage medium and the processor of busbar short-circuit
CN109950879A (en) * 2019-02-28 2019-06-28 珠海格力电器股份有限公司 Charge protection device, method and the circuit with charge protection of power circuit
CN110045808A (en) * 2019-04-02 2019-07-23 惠州Tcl移动通信有限公司 Capacitances to supply power method, system, storage medium and mobile terminal
CN110247541A (en) * 2018-03-08 2019-09-17 鸿富锦精密电子(天津)有限公司 It can inhibit the power supply circuit of dash current
WO2020114187A1 (en) * 2018-12-06 2020-06-11 中车时代电动汽车股份有限公司 Pre-charging circuit fault detection method and apparatus

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1273450A (en) * 1999-05-10 2000-11-15 精工电子有限公司 Switch regulator
CN1545198A (en) * 2003-09-28 2004-11-10 北京利德华福电气技术有限公司 Second generation high-voltage large-power frequency converter
JP2007189873A (en) * 2006-01-16 2007-07-26 Tokushu Denso Kk Inrush current protection circuit
CN201063534Y (en) * 2007-08-09 2008-05-21 中国航天科工集团第三总体设计部 Soft starting and commutation integrated device for switch power supply
CN101982934A (en) * 2010-10-29 2011-03-02 华南理工大学 Soft starting device and method of high-power switching power supply
CN201976021U (en) * 2011-04-28 2011-09-14 湖南银秀变频技术有限公司 Transducer
JP2012110183A (en) * 2010-11-19 2012-06-07 Panasonic Corp Air conditioner

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1273450A (en) * 1999-05-10 2000-11-15 精工电子有限公司 Switch regulator
CN1545198A (en) * 2003-09-28 2004-11-10 北京利德华福电气技术有限公司 Second generation high-voltage large-power frequency converter
JP2007189873A (en) * 2006-01-16 2007-07-26 Tokushu Denso Kk Inrush current protection circuit
CN201063534Y (en) * 2007-08-09 2008-05-21 中国航天科工集团第三总体设计部 Soft starting and commutation integrated device for switch power supply
CN101982934A (en) * 2010-10-29 2011-03-02 华南理工大学 Soft starting device and method of high-power switching power supply
JP2012110183A (en) * 2010-11-19 2012-06-07 Panasonic Corp Air conditioner
CN201976021U (en) * 2011-04-28 2011-09-14 湖南银秀变频技术有限公司 Transducer

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
宋德超等: "电解电容充电控制电路分析和应用", 《家电科技》 *
宋德超等: "电解电容充电控制电路分析和应用", 《家电科技》, 1 April 2011 (2011-04-01), pages 84 - 85 *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106505846A (en) * 2016-11-15 2017-03-15 上海玖行能源科技有限公司 A kind of soft starting circuit and soft-start method and direct-current charging post
CN106505846B (en) * 2016-11-15 2019-03-26 上海玖行能源科技有限公司 A kind of soft starting circuit and soft-start method and direct-current charging post
CN108267665A (en) * 2017-11-22 2018-07-10 珠海格力电器股份有限公司 Detection method, circuit, storage medium and the processor of busbar short-circuit
CN108267665B (en) * 2017-11-22 2020-10-02 珠海格力电器股份有限公司 Bus short circuit detection method, circuit, storage medium and processor
CN110247541A (en) * 2018-03-08 2019-09-17 鸿富锦精密电子(天津)有限公司 It can inhibit the power supply circuit of dash current
WO2020114187A1 (en) * 2018-12-06 2020-06-11 中车时代电动汽车股份有限公司 Pre-charging circuit fault detection method and apparatus
CN111289870A (en) * 2018-12-06 2020-06-16 中车时代电动汽车股份有限公司 Fault detection method and device for pre-charging circuit
CN109950879A (en) * 2019-02-28 2019-06-28 珠海格力电器股份有限公司 Charge protection device, method and the circuit with charge protection of power circuit
CN110045808A (en) * 2019-04-02 2019-07-23 惠州Tcl移动通信有限公司 Capacitances to supply power method, system, storage medium and mobile terminal

Similar Documents

Publication Publication Date Title
CN105207258B (en) A kind of photovoltaic direct-current micro-grid energy cooperative control device
US9680303B2 (en) Power storage system and power source system
US8587251B2 (en) Switching circuit, control apparatus, and power generation system
US9969286B2 (en) Smart, integrated charging device for electric vehicles
EP2665619B1 (en) Battery charger for electric vehicles
US8659263B2 (en) Power supply circuit having low idle power dissipation
US8896263B2 (en) Critical mode control discontinuous mode boost-buck charger
CN101394103B (en) Charging system performing charging control by using surface temperature of battery cell
US10432020B2 (en) Emergency back-up power system for traction elevators
US10230264B2 (en) Emergency lighting battery charger
US8935145B2 (en) Apparatus for simulating battery system
JP5959561B2 (en) Multiple battery DC microgrid charging / discharging system connected in series
EP2566007A2 (en) Cell balancing device and method
CN102005817B (en) Uninterruptible power supply device based on microgrid and dispatching control method thereof
US9531297B2 (en) Solar power conversion system
CN105591460B (en) System and method for battery management
US9667094B1 (en) Battery backup system for uninterrupted power supply
US20130181539A1 (en) Adaptive wireless power transfer system and method
TWI472121B (en) Discharge control apparatus and discharge control method
CN102549879B (en) Uninterruptible power-supply system
EP2793352A1 (en) Power supply system and power conditioner for charging and discharging
JP2012532582A (en) Fast feedback adjustment of power charging / discharging of energy storage system
EP2367261A2 (en) Direct-current power source apparatus
CN103688437B (en) Power governor, control method and electricity generation system
CN100391079C (en) Rapid dattery Charging method and apparatus

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20140212