CN202679228U - Capacitor charging circuit - Google Patents
Capacitor charging circuit Download PDFInfo
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- CN202679228U CN202679228U CN 201220366866 CN201220366866U CN202679228U CN 202679228 U CN202679228 U CN 202679228U CN 201220366866 CN201220366866 CN 201220366866 CN 201220366866 U CN201220366866 U CN 201220366866U CN 202679228 U CN202679228 U CN 202679228U
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- 239000003990 capacitor Substances 0.000 title claims abstract description 137
- 238000004891 communication Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 22
- 230000008569 process Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 10
- 230000008859 change Effects 0.000 description 4
- 238000011897 real-time detection Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 240000007320 Pinus strobus Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model provides a capacitance charging circuit. The utility model discloses an electric capacity charging circuit includes: the first voltage detection device is connected with the capacitor and used for measuring the voltage of the capacitor; the first branch circuit is connected between a power supply and the capacitor and used for providing a channel for charging the capacitor; the second branch circuit is connected with the first branch circuit in parallel and used for providing a channel for supplying power to a load; and 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 on-off of the first branch circuit and the second branch circuit according to the voltage of the capacitor. Therefore, the actual charging condition of the capacitor is obtained by detecting the actual voltage of the capacitor, the branch circuit of the circuit is controlled to be switched on or switched off according to the actual charging condition of the capacitor, the problem that the existing capacitor charging circuit is easy to generate capacitor overcharge or undercharge is avoided, and the reliability of the capacitor and the power supply is improved.
Description
Technical field
The utility model relates to control field, in particular to a kind of capacitor charging circuit.
Background technology
High-voltage electrolytic capacitor is device commonly used in the power supply circuits, be used for voltage stabilizing and filter action, in being provided with the circuit of high-voltage capacitance, at first by charge circuit capacitor is charged when powering on, cause harmful effect with the large impact electric current of avoiding powered on moment to other element in the power supply circuits with for electric loading.
To the control method of capacitor charging circuit, generally be in advance according to the parameter of electric capacity and charge circuit in the prior art, calculate the time that capacitor charging needs.Reach the charging interval during theoretical value at capacitor charging time, judge that capacitor charging finishes.
But, the parameter of capacitance parameter, charge circuit, actual working environment all can affect the actual time of finishing 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 all is to change in real time such as temperature, dust situation.Therefore can cause capacitor charging deficiency or charging interval long according to the charging of capacitor charging time calculated value control capacitance, the functional reliability of electric capacity and power supply circuits is reduced, when serious even can damage capacitor or other circuit devcie.
For the electric capacity in existing capacitor charging loop and the lower problem of functional reliability of power supply circuits, effective solution is proposed not yet at present.
The utility model content
The utility model aims to provide a kind of capacitor charging circuit, with the electric capacity in capacitor charging loop and the lower problem of functional reliability of power supply circuits in the solution prior art.
To achieve these goals, the utility model provides a kind of capacitor charging circuit.This capacitor charging circuit comprises: the first voltage check device, condense with electric capacity, and be used for measuring the voltage of electric capacity; The first branch road is connected between power supply and the electric capacity, and being used for provides path to capacitor charging; The second branch road, with the first branch circuit parallel connection, being used for powers to the load provides path; Controller is connected respectively with the first voltage check device, the first branch road, the second branch road, is used for according to voltage control first branch road of electric capacity and the break-make of the second branch road.
Further, above-mentioned the first branch road comprises: current-limiting apparatus and the first switch, and wherein, current-limiting apparatus is connected between power supply and the electric capacity; The first switch is connected with current-limiting apparatus, and the control end of the first switch is connected with controller, is used for the break-make of control the first branch road.
Further, above-mentioned the second branch road comprises: second switch, be connected between power supply and the electric capacity, and the control end of second switch is connected with controller, is used for the break-make of control the second branch road.
Further, capacitor charging circuit of the present utility model also comprises the second voltage checkout gear, is connected with controller with power supply respectively, is used for measuring the voltage of described power supply.
Further, power supply is communication power supply, also is provided with rectifying device between power supply and the electric capacity, and it is DC power supply to capacitor charging that rectifying device is used for the communication power supply rectification.
Further, the first branch road and the second branch road are arranged between communication power supply and the rectifying device.
Further, the first branch road and the second branch road are arranged between rectifying device and the electric capacity.
Further, current-limiting apparatus comprises resistor.
Further, the first switch is relay.
Further, second switch is relay.
Use the technical solution of the utility model, capacitor charging circuit of the present utility model comprises the first voltage check device, is connected with electric capacity, is used for measuring the voltage of electric capacity; Be used for measuring the voltage of electric capacity; The first branch road is connected between power supply and the electric capacity, and being used for provides path to capacitor charging; The second branch road, with the first branch circuit parallel connection, being used for powers to the load provides path; Controller is connected respectively with the first voltage check device, the first branch road, the second branch road, is used for according to voltage control first branch road of electric capacity and the break-make of the second branch road.In the 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 the charging target voltage, control the second branch road closed, finish the charging process to electric capacity, disconnect the first branch road, power supply circuits are finished the preparation to load supplying, can power to load at any time.Thereby obtain the actual conditions of the charging of electric capacity by the virtual voltage of Detection capacitance, thereby the actual condition control capacitance charging circuit according to capacitor charging, avoid the problem that overcharges or owe to fill according to the electric capacity that time control capacitance charging produces, improved the reliability of electric capacity and power supply.
Description of drawings
The Figure of description that consists of the application's a part is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the schematic diagram according to the capacitor charging circuit of the utility model the first embodiment;
Fig. 2 is the schematic diagram according to the capacitor charging circuit of the utility model the second embodiment;
Fig. 3 is the schematic diagram according to the capacitor charging circuit of the utility model the 3rd embodiment;
Fig. 4 is the schematic diagram according to the control device of the capacitor charging circuit of the utility model embodiment;
Fig. 5 is the schematic diagram according to the control method of the capacitor charging circuit of the utility model embodiment;
Fig. 6 is the flow chart according to the control method of the capacitor charging circuit of the utility model preferred embodiment.
Embodiment
Need to prove, in the situation that do not conflict, embodiment and the feature among the embodiment among the application can make up mutually.
Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
The utility model embodiment provides a kind of capacitor charging circuit, Fig. 1 is the schematic diagram according to the capacitor charging circuit of the utility model the first embodiment, as shown in Figure 1, the capacitor charging circuit of the first embodiment of the present utility model comprises: the first voltage check device 13, be connected with capacitor C 1, be used for measuring the voltage of capacitor C 1; The first branch road 11 is connected between power supply 15 and the capacitor C 1, and being used for provides path to capacitor C 1 charging; The second branch road 12, in parallel with the first branch road 11, be used 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, is used for according to voltage control first branch road 11 of capacitor C 1 and the break-make of the second branch road 12.In the capacitor charging process, the first branch road 11 closures, the second branch road 12 disconnects, and power supply 15 is by the voltage of the first branch road 11 to capacitor C 1, the first voltage check device 13 real-time Detection capacitance C1, when capacitance voltage reaches the charging target voltage, control the second branch road 12 closures, finish the charging process to electric capacity, disconnect the first branch road 11, power supply circuits are finished 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, obtain the actual conditions of the charging of electric capacity by the virtual voltage of Detection capacitance, thereby the actual condition control capacitance charging circuit according to capacitor charging, avoid the problem that overcharges or owe to fill according to the electric capacity that time control capacitance charging produces, improved the reliability of electric capacity and power supply.
Because electric capacity is at the initial stage of 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 the utility model the first embodiment can comprise: current-limiting apparatus 111 and the first K switch 1, wherein, current-limiting apparatus 111 is connected between power supply 15 and the 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, is used for controlling the break-make of described the first branch road 11.
The effect of current-limiting apparatus 111 is sizes of control 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 use the constant current source apparatus, guarantees that the charging current of electric capacity is constant.Obviously, current-limiting apparatus 111 can use 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, is used under the control of controller 14 the first branch road 11 being carried out closure and turn-offing operation, thereby makes the first branch road 11 inputs or out of service.Owing to having current-limiting apparatus 111 in the first branch road 11, after being full of, capacitor C 1 still powers to load 16 by the first branch road 11, can cause the waste of electric energy, therefore, after capacitor C 1 is full of, control the second branch road 12 and connect, powered to load 16 by the second branch road 12.
The second branch road 12 can comprise: second switch K2, be connected between power supply 15 and the capacitor C 1, and the control end of second switch K2 is connected with controller 14, is used for controlling the break-make of described the second branch road 12.Second switch K2 can use relay or other contactor device with control end, is used under the control of controller 14 the second branch road 12 being carried out closure and turn-offing 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, be used for curtage when circuit and occur disconnecting corresponding branch road so that circuit is protected when unusual.
In different power supply circuits, power supply 15 may be AC power or DC power supply, and corresponding voltage also had difference when capacitor C 1 was finished charging so, if power supply 15 is V for voltage effective value
AcAlternating voltage the time, the theoretical voltage value when capacitor C 1 charging is finished should be V
AcIf power supply 15 is V for voltage
DcDirect voltage the time, the theoretical voltage value when capacitor C 1 charging is finished should be V
Dc, because the situation of actual capacitance, certain fluctuation might appear in the voltage after capacitor C 1 charging, can set suitable voltage threshold by controller, capacitor C 1 both end voltage can think that electric capacity is full of in the voltage threshold scope of setting the time, and power supply circuits are in the state of being ready to complete.
That is to say, input voltage and the type of output voltage of capacitor charging circuit be exchange or the situation of direct current under, when the input voltage of capacitor charging circuit equates with output voltage, can judge that capacitor charging finishes.
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 satisfying this situation, the utility model has also proposed the capacitor charging circuit of the second embodiment, Fig. 2 is the schematic diagram according to the capacitor charging circuit of the utility model the second embodiment, as shown in Figure 2, the capacitor charging circuit of the utility model the second embodiment has increased rectifying device 21 on the basis of the first embodiment, and it is the DC power supply of charging to capacitor C 1 that this rectifying device 21 is used for communication power supply 15 rectifications.The magnitude of voltage of supposing communication power supply 15 is V
Ac, the charging of capacitor C 1 is finished theoretical value and also be should be
In Fig. 2, the first branch road 11 and the second branch road 12 only are shown are arranged on situation between communication power supply 15 and the 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 withdraw from.
In addition, can also there be the second form in the capacitor charging loop of the utility model the second embodiment, namely the first branch road 11 and the second branch road 12 are arranged between rectifying device 21 and the capacitor C 1, in this case, power supply 15 is converted to direct current by rectifying device 21 with interchange, the break-make of the first branch road 11 and the second branch road 12 is only controlled the break-make by the DC power supply behind the rectifying device, uncontrollable rectifying device 21.
Two kinds of forms of above the second embodiment can whether needs control arranges flexibly according to rectifying device 21.Thereby improved the flexibility of power supply circuits operational modes.
The capacitor charging circuit of the utility model the 3rd embodiment detects the voltage of power supply in real time, and the voltage that utilizes power supply is judged whether electric capacity charges and is finished, Fig. 3 is the schematic diagram according to the capacitor charging circuit of the utility model the second embodiment, as shown in Figure 3, compare with the capacitor charging circuit of the utility model the first embodiment, the capacitor charging circuit of the 3rd embodiment also comprises second voltage checkout gear 31, be connected with controller with power supply respectively, be used for measuring the voltage of power supply; Controller also is used for according to the voltage of power supply the first predetermined threshold value being set.When power supply 15 is AC power, the voltage effective value that second voltage checkout gear 31 measures is V
AcThe time, the theoretical voltage value when capacitor C 1 charging is finished should be V
Ac, when power supply 15 is DC power supply, the voltage that second voltage checkout gear 31 measures is V
DcThe time, the theoretical voltage value when capacitor C 1 charging is finished should be V
DcThe theoretical voltage value of controller 14 when charging is finished according to capacitor C 1 set the first suitable predetermined threshold value.
Equally, the second voltage checkout gear 31 of the capacitor charging circuit of the utility model the 3rd embodiment also adds in the capacitor charging circuit of the second embodiment.In this case, the voltage effective value value of the communication power supply 15 that measures of second voltage checkout gear 31 is V
Ac, the charging of capacitor C 1 is finished theoretical value and also be should be
Controller 14 bases
Set the first suitable predetermined threshold value.
By second voltage checkout gear 31, can be in real time judge according to the situation of supply voltage whether capacitor C 1 charges and finish, thus more accurate.
The utility model embodiment also provides a kind of control device of capacitor charging circuit, be used for the capacitor charging circuit of above embodiment is controlled, Fig. 4 is the schematic diagram according to the control device of the capacitor charging circuit of the utility model embodiment, as shown in Figure 4, the control device of the utility model embodiment comprises: charging beginning control module 41, be used for control the first branch road 11 connections and the second branch road 12 and disconnect, charge to capacitor C 1 by the first branch road 11; Voltage acquisition module 43 is used for obtaining capacitor C 1 voltage that the first voltage check device 13 measures; Judge module 45 is used for judging whether capacitance voltage reaches the first predetermined threshold value; Charging finishing control module 47 is used 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, at first connect by charging beginning control module 41 controls the first branch road 11, charge to capacitor C 1 by the first branch road 11, then obtained the real-time voltage value of capacitor C 1 by voltage acquisition module 43, judge module 45 is judged this real-time voltage value and the first predetermined threshold value, when this real-time voltage value arrives the first predetermined threshold value, connected by charging finishing control module 47 controls the second branch road 12, powered for load by the second branch road 12.After other the second branch road 12 is connected, after electric current is finished switching by the first branch road 11 to the second branch road, can control the first branch road 11 and disconnect.
Theoretical voltage value when above-mentioned the first predetermined threshold value can be finished according to above-mentioned capacitor C 1 charging arranges, when reaching 90%, 95% or other multiple of this theoretical voltage value, thereby when the voltage of capacitor C 1 reaches charging and finishes 90%, 95% or other multiple of theoretical voltage value, just can control the second branch road 12 and connect, carry out branch road and switch.
The control device of the capacitor charging circuit of the utility model embodiment can also comprise, the power supply acquisition module, be used for obtaining the voltage of the power supply that the second voltage checkout gear measures, judge module 45 also is used for according to the voltage of described power supply described the first predetermined threshold value being set.
Preferably, the control device of the capacitor charging circuit of the utility model embodiment can also comprise: the second judge module, be used for judging whether capacitance voltage does not increase in the lasting scheduled time and this capacitance voltage less than the second predetermined threshold value; Alarm output module, be used for when voltage whether continue not increase in the scheduled time and this voltage 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, continue not increase and continue for some time if there is capacitor C 1 electric capacity and show that electric capacity can't charge, the related device circuit breaks down, this moment, output alarm signal was 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 utility model embodiment also provides a kind of control method of capacitor charging circuit, is carried out by the control device of the capacitor charging circuit of above embodiment, is used for the capacitor charging circuit of above-described embodiment is controlled.Fig. 5 is the schematic diagram according to the control method of the capacitor charging circuit of the utility model embodiment, and as shown in Figure 5, the control method of the capacitor charging circuit of the utility model embodiment comprises:
Step S51 controls 11 connections of the first branch road and the second branch road 12 disconnects, and charges to capacitor C 1 by the first branch road 11; 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 utility model embodiment, at first controlling the first branch road 11 connects with to capacitor charging, judge according to capacitor C 1 voltage whether charging is finished, 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.Wherein the size of the first predetermined threshold value can arrange according to the theoretical value that capacitor charging is finished.Such as 90% or 95% of theoretical value.
After step S53, can also comprise: judge whether capacitance voltage continues not increase in the scheduled time and this voltage less than the second predetermined threshold value; In capacitance voltage continues the scheduled time, do not increase and this voltage during 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 can't charge normal, timely output alarm signal is 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 utility model embodiment can also comprise: the voltage that obtains the power supply that the second voltage checkout gear measures; Voltage according to described power supply arranges described the first predetermined threshold value.Utilizing the power supply voltage that obtains in real time to judge whether electric capacity charges finishes.
The below is take the ac-dc conversion circuit of air-conditioning DC frequency-changing machine as example, flow process to the control method of the capacitor charging circuit of the utility model embodiment is elaborated by reference to the accompanying drawings, Fig. 6 is the flow chart according to the control method of the capacitor charging circuit of the utility model preferred embodiment, as shown in Figure 6, the flow process of the control method of the capacitor charging circuit of the utility model preferred embodiment is:
Capacitor charging begins, and connects by the first K switch 1 Closed control the first branch road, opens control the second branch road by second switch K2 and disconnects, and power supply 15 charges to capacitor C 1 by the first branch road 11;
Magnitude of voltage Vout by the first voltage check device 13 Real-Time Monitoring capacitor C 1;
Whether judge Vout less than the second predetermined threshold value V2, if Vout＜V2 judges whether Vout increases, if Vout 〉=V2 or Vout change, enter next step, if Vout continues not change output alarm signal in the preset time t 1.
Judge whether Vout reaches the first predetermined threshold value V1, if during Vout＜V1, return the step of Real-Time Monitoring capacitance voltage value,
If Vout 〉=V1, charging process is finished, and connects by second switch K2 Closed control the second branch road, and power supply 15, is opened control the first branch road by the first K switch 1 after current switching is finished and disconnected to load 16 power supplies by the second branch road 12.
Suppose AC-input voltage Vac=220V, through behind the rectifying device 21, the voltage theoretical value that electric capacity is full of behind the 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.Do not increase if occur capacitor C 1 continuous 2 seconds magnitudes of voltage in the charging process, and be lower than 100V, then think the electric capacity fault to show failure code, need the reminding user maintenance.
Above embodiment all describes as an example of single phase circuit example, and capacitor charging circuit of the present utility model can be used in the three phase supply circuit that comprises high-voltage capacitance equally.
Use the technical solution of the utility model, the capacitor charging circuit of the utility model embodiment comprises: the first voltage check device, be connected to the electric capacity two ends, and be used for measuring the voltage of electric capacity; The first branch road is connected between power supply and the electric capacity, and being used for provides path to capacitor charging; The second branch road, with the first branch circuit parallel connection, being used for powers to the load provides path; Controller is connected respectively with the first voltage check device, the first branch road, the second branch road, and be used for the connection of control the first branch road and the second branch road and disconnect, by first road direction capacitor charging, 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 the 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 the electric capacity capacitance voltage reaches the charging target voltage, control the second branch road closed, finish the charging process to electric capacity, disconnect the first branch road, power supply circuits are finished the preparation to load supplying, can power to load at any time.Thereby obtain the actual conditions of the charging of electric capacity by the virtual voltage of Detection capacitance, thereby the actual condition control capacitance charging circuit according to capacitor charging, avoid the problem that overcharges or owe to fill according to the electric capacity that time control capacitance charging produces, improved the reliability of electric capacity and power supply.
The above is preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (10)
1. a capacitor charging circuit is characterized in that, comprising:
The first voltage check device is connected with electric capacity, is used for measuring the voltage of described electric capacity;
The first branch road is connected between power supply and the described electric capacity, and being used for provides path to described capacitor charging;
The second branch road, with described the first branch circuit parallel connection, being used for powers to the load provides path;
Controller is connected respectively with described the first voltage check device, described the first branch road, described the second branch road, is used for the break-make according to described the first branch road of the voltage control of described electric capacity and described the second branch road.
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 the 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, is used 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 between power supply and the electric capacity, and the control end of described second switch is connected with described controller, is used for controlling the break-make of described the second branch road.
4. each described capacitor charging circuit in 3 according to claim 1 is characterized in that, also comprises the second voltage checkout gear, respectively with described power supply be connected controller and be connected, be used for measuring the voltage of described power supply.
5. each described capacitor charging circuit in 3 according to claim 1, it is characterized in that, described power supply is communication power supply, also be provided with rectifying device between described power supply and the described electric capacity, it is DC power supply to described capacitor charging that described rectifying device is used for described communication power supply rectification.
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 the described rectifying device.
7. 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 rectifying device and the described electric capacity.
8. capacitor charging circuit according to claim 2 is characterized in that, described current-limiting apparatus comprises resistor.
9. capacitor charging circuit according to claim 2 is characterized in that, described the first switch is relay.
10. capacitor charging circuit according to claim 3 is characterized in that, described second switch is relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220366866 CN202679228U (en) | 2012-07-26 | 2012-07-26 | Capacitor charging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220366866 CN202679228U (en) | 2012-07-26 | 2012-07-26 | Capacitor charging circuit |
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| Publication Number | Publication Date |
|---|---|
| CN202679228U true CN202679228U (en) | 2013-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220366866 Expired - Lifetime CN202679228U (en) | 2012-07-26 | 2012-07-26 | Capacitor charging circuit |
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| CN (1) | CN202679228U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300543A (en) * | 2013-07-19 | 2015-01-21 | 青岛海尔空调电子有限公司 | Protective circuit and power supply communication method of air conditioner supplied by DC switching power source |
| CN108322035A (en) * | 2018-03-07 | 2018-07-24 | 奥克斯空调股份有限公司 | A kind of charging control circuit and its control method |
| CN109038762A (en) * | 2018-09-14 | 2018-12-18 | 珠海格力电器股份有限公司 | Charging device and charging system |
-
2012
- 2012-07-26 CN CN 201220366866 patent/CN202679228U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300543A (en) * | 2013-07-19 | 2015-01-21 | 青岛海尔空调电子有限公司 | Protective circuit and power supply communication method of air conditioner supplied by DC switching power source |
| CN108322035A (en) * | 2018-03-07 | 2018-07-24 | 奥克斯空调股份有限公司 | A kind of charging control circuit and its control method |
| CN108322035B (en) * | 2018-03-07 | 2020-03-13 | 奥克斯空调股份有限公司 | Charging control circuit and control method thereof |
| CN109038762A (en) * | 2018-09-14 | 2018-12-18 | 珠海格力电器股份有限公司 | Charging device and charging system |
| WO2020052142A1 (en) * | 2018-09-14 | 2020-03-19 | 珠海格力电器股份有限公司 | Charging device and charging system |
| CN109038762B (en) * | 2018-09-14 | 2020-07-14 | 珠海格力电器股份有限公司 | Charging device and charging system |
| US20210249884A1 (en) * | 2018-09-14 | 2021-08-12 | Gree Electric Appliances, Inc. Of Zhuhai | Charging Device and Charging System |
| EP3826129A4 (en) * | 2018-09-14 | 2021-10-06 | Gree Electric Appliances, Inc. of Zhuhai | Charging device and charging system |
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