CN105991025A - Discharge control system - Google Patents
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- CN105991025A CN105991025A CN201510098534.7A CN201510098534A CN105991025A CN 105991025 A CN105991025 A CN 105991025A CN 201510098534 A CN201510098534 A CN 201510098534A CN 105991025 A CN105991025 A CN 105991025A
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Abstract
The invention relates to a discharge control system which comprises a switching power supply, a DC power supply VCC, a discharge circuit, a switch circuit, and a judging circuit. The switching power supply comprises a control module. The judging circuit, the control module, the switch circuit, the discharge circuit and the switching power supply are orderly connected. When the switching power supply is connected to a switching power supply system, the judging circuit outputs a low level signal, the control module converts the low level signal into a high level signal and outputs the high level signal to the switch circuit, and the switch circuit disconnects the discharge circuit. When the switching power supply is pulled out of the switching power supply system, the judging circuit outputs a high level signal to the control module, the control module converts the high level signal into a low level signal and outputs the low level signal to the switch circuit, the switch circuit connects the discharge circuit, and the discharge circuit starts to discharge. The discharge control system stops discharging when the switching power supply is connected to a switching power supply system, the loss is reduced, the temperature of the discharge control system is reduced, and the discharging efficiency is improved.
Description
Technical field
The present invention relates to field of switch power, more particularly, it relates to a kind of discharge control system.
Background technology
With the raising that development and the application of Power Electronic Technique require, Switching Power Supply is towards miniaturization, polynary
Changing, modularization, high efficiency, high reliability, energy-conserving and environment-protective direction is developed.In the big occasion of power consumption, open
Close power module it is generally required to composition system is applied；When switch power module is extracted from switch power supply system
When, owing to high voltage output terminal is exposed, therefore it is required that safe voltage can quickly be discharged into, to avoid
The possible Danger Electric shock risk of operating personnel.The method using at present is the output parallel discharge electricity in Switching Power Supply
Resistance formed discharge circuit so that when Switching Power Supply extracts switch power supply system, can release-push power supply from
The electricity of body, but use the feature of the method to be that circuit is simple, only need to be in the output of switch power supply system
A port thermistor RT in parallel forms closed-loop path, but thermistor RT needs to be connected in parallel on output always
End, this accesses loss when switch power supply system uses by increasing Switching Power Supply, causes Switching Power Supply to be extracted out
Discharging efficiency when closing power-supply system reduces.
Content of the invention
The technical problem to be solved in the present invention is, for the drawbacks described above of prior art, provides one electric discharge
Control system, reduces Switching Power Supply and accesses loss when switch power supply system uses, improve Switching Power Supply
Extract discharging efficiency during switch power supply system.
The technical solution adopted for the present invention to solve the technical problems is: a kind of discharge control system of construction, bag
Including Switching Power Supply and dc source VCC, described Switching Power Supply includes control module, described discharge control system
Also include discharge circuit, on-off circuit, decision circuitry；
Described discharge circuit, is connected with described Switching Power Supply, for the electric discharge of described Switching Power Supply；
Described decision circuitry, is used for judging whether described Switching Power Supply accesses switch power supply system, if described open
Close switch power supply system, then output low level signal described in plant-grid connection, if described Switching Power Supply is extracted described
Switch power supply system, then export high level signal；
Described control module, is connected with described decision circuitry, including signal conversion unit, for by described low
Level signal is converted into high level signal output, or high level signal is converted into low level signal output；
Described on-off circuit, is connected with described discharge circuit, for according to described high level signal and described low
The Guan Bi of the described discharge circuit of level signal control and disconnection.
Preferably, described Switching Power Supply also includes input module, PFC module, DC-DC module, rectification filter
Ripple output module, described input module, it is used for exporting initial electrical signal to described PFC module；
Described PFC module, is connected with described input module, is used for receiving described initial electrical signal and improves institute
State the power factor of initial electrical signal, obtain first signal of telecommunication and export；
Described DC-DC module, is connected with described PFC module, is used for receiving described first signal of telecommunication and converts
For second signal of telecommunication of fixed voltage and export；
Described rectifying and wave-filtering output module, is connected with described DC-DC module, is used for receiving described second telecommunications
Number and be converted into steady direct current voltage signal output；
Described control module, is connected with described PFC module and described DC-DC module respectively, also includes PFC
Control unit and DC-DC control unit, described PFC control unit is extremely described for sending the first control instruction
Described initial electrical signal is converted into described first signal of telecommunication defeated to control described PFC module by PFC module
Go out, described DC-DC control unit, for sending the second control instruction extremely described DC-DC module, with control
Described first signal of telecommunication is converted into described second signal of telecommunication and exports by described DC-DC module.
Preferably, described discharge circuit includes that thermistor RT, described thermistor RT filter with described rectification
Ripple output module is in parallel.
Preferably, described on-off circuit is relay switching circuit, including relay drive circuit and relay,
Described relay includes coil L and switch K, and relay drive circuit includes the first resistance R1, the second resistance
R2, the first electric capacity C1, the first triode Q1, described control module, described first resistance R1, described
One triode Q1, described coil L, described dc source VCC are sequentially connected in series, described second resistance R2 and
Described first electric capacity C1 is in parallel with described first triode Q1, and described first triode Q1 base stage,
Colelctor electrode is connected with described first resistance R1, described coil L respectively, described second resistance R2 or described
The two ends of one electric capacity C1 are connected with base stage and the emitter stage of described first triode Q1, if described one or three pole
Pipe Q1 is NPN type, and the first triode Q1 described in when described control module exports described high level signal turns on,
If described first triode is positive-negative-positive, described control module export described low level signal when described in the one or three
Pole pipe Q1 turns on, and described second resistance R2 is the pull down resistor of described first triode Q1.
Preferably, described on-off circuit is transistor switching circuit, including positive-negative-positive the second triode Q2,
5th resistance R5, the collector and emitter of described second triode Q2 is series in described discharge circuit,
The two ends of described 5th resistance R5 connect with the base stage of described control unit and described second triode Q2 respectively
Connecing, when described control module exports described high level signal, described second triode Q2 disconnects, described control
When molding block exports described low level signal, described second triode Q2 conducting.
Preferably, described on-off circuit is controllable semiconductor switch circuit, including the 3rd triode Q3,
Four triode Q4, the 5th triode Q5, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8,
Three electric capacity C3, also include metal-oxide-semiconductor or IGBT pipe, and described metal-oxide-semiconductor is N-type groove MOS pipe, described
One end of 6th resistance R6 is connected with the base stage of described 5th triode Q5 and the other end and described control module
Connect, the colelctor electrode of described 5th triode Q5 and described 3rd triode Q3 and described 4th triode
The base stage of Q4 connects and grounded emitter, the emitter stage of described 3rd triode Q3 and described 4th triode
The emitter stage of Q4 connects and colelctor electrode is connected with described dc source VCC, described 8th resistance R8 and described
3rd electric capacity C3 is parallel to the two ends of described metal-oxide-semiconductor or described IGBT pipe and is grounded, described 3rd electric capacity
For filtering, described 8th resistance R8 is the pull down resistor of described metal-oxide-semiconductor,
The G pole of described metal-oxide-semiconductor, described 7th resistance R7, described 3rd triode Q3 or the described 4th
The emitter stage of triode Q4 is sequentially connected with, and described metal-oxide-semiconductor is series at described temperature-sensitive by D pole and S pole
Between resistance RT and described rectifying and wave-filtering output module, when described control module exports described high level signal,
Described metal-oxide-semiconductor disconnects, and when described control module exports described low level signal, described MOS turns on,
Or, the gate pole of described IGBT pipe, described 7th resistance R7, described 3rd triode Q3 or
The emitter stage of described 4th triode Q4 is sequentially connected with, and described IGBT pipe is by collector and emitter string
Being coupled between described thermistor RT and described rectifying and wave-filtering output module, the output of described control module is described
During high level signal, described IGBT pipe disconnects, when described control module exports described low level signal, and institute
State IGBT conducting.
Preferably, described decision circuitry includes the 3rd resistance R3, the 4th resistance R4 and diode D,
One end of described 3rd resistance R3 is connected with one end of described 4th resistance R4, described 3rd resistance
The R3 other end is connected with described dc source VCC, the other end of described 4th resistance R4 ground connection, and described the
The two ends of four resistance R4 are provided with the first detection pin PIN1 and second detection pin PIN2, at described switch electricity
When described switch power supply system is accessed in source, described first detection pin PIN1 and described second detection pin PIN2
Short circuit；
Described diode D is in parallel with described 4th resistance R4, and the negative pole of described diode D is connected to institute
State between the 3rd resistance R3 and described 4th resistance R4.
Preferably, described discharge circuit also includes the 9th resistance R9, described 9th resistance R9 respectively with described
Thermistor RT and described rectifying and wave-filtering output module connect.
Preferably, described discharge control system also includes cooling module, and described control module also includes cooling control
Unit processed, is used for exporting cooling control instruction extremely described cooling module, adjusts fall to control described cooling module
Temperature speed, described cooling module is connected with described dc source VCC and described control module respectively, is used for connecing
Receive described cooling control instruction and described dc source VCC output direct current signal, with adjust rate of temperature fall and
For the cooling of described discharge control system.
Preferably, described cooling module includes cooling alignment circuit and cooling unit, and described cooling unit is used for
For described discharge control system cooling, described cooling alignment circuit respectively with described control module, described cooling
Unit and described dc source VCC connect, for receiving the cooling control signal of described control module output,
The direct current signal size controlling described DC voltage VCC output to described cooling unit is to adjust described cooling
The rate of temperature fall of unit.
Implement the discharge control system of the present invention, have the advantages that and judged by decision circuitry
Whether Switching Power Supply accesses switch power supply system, if Switching Power Supply accesses switch power supply system, then decision circuitry
Output low level signal, low level signal is converted into high level signal and exports to on-off circuit by control module,
On-off circuit control discharge circuit disconnects, and with the electric discharge of shutdown switch power supply, reduces the loss of Switching Power Supply,
When Switching Power Supply extracts switch power supply system, then decision circuitry output high level signal, control module is by height
Level signal is converted into low level signal and exports to on-off circuit, on-off circuit control discharge circuit Guan Bi, opens
Close power supply and start electric discharge, owing to when Switching Power Supply accesses switch power supply system, discharge circuit disconnects, not
Electric discharge, the temperature during temperature of discharge control system continuous discharge to be less than this moment, and then improve electric discharge control
The discharging efficiency of system processed.
Brief description
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the first embodiment theory structure block diagram of discharge control system of the present invention；
Fig. 2 is the circuit diagram of the first embodiment of discharge control system of the present invention；
Fig. 3 is the circuit diagram of the second embodiment of discharge control system of the present invention；
Fig. 4 is the circuit diagram of the 3rd embodiment of discharge control system of the present invention；
Fig. 5 is the workflow diagram of discharge control system of the present invention.
Detailed description of the invention
As it is shown in figure 1, in the discharge control system first embodiment of the present invention, discharge control system includes
Switching Power Supply the 1st, dc source VCC5, Switching Power Supply 1 includes control module 11, and discharge control system is also
Including discharge circuit the 2nd, on-off circuit the 3rd, decision circuitry 4.As preferably, dc source VCC5 with open
Close power supply 1 to connect, receive the voltage signal of Switching Power Supply 1 output and carry out reducing supply switch electricity after voltage
Source discharge circuit uses.
Discharge circuit 2 is connected with Switching Power Supply 1, for Switching Power Supply electric discharge.
Decision circuitry 4 is used for judging whether Switching Power Supply 1 accesses switch power supply system and use, if Switching Power Supply
1 accesses switch power supply system, then output low level signal, if Switching Power Supply 1 extracts switch power supply system,
Then export high level signal.
Control module 11 is connected with decision circuitry 4, and control module 11 includes signal conversion unit 111, letter
Number conversion unit 111 for being converted into high level signal output by low level signal, or by high level signal
It is converted into low level signal output.
On-off circuit 3 is connected with discharge circuit 2, puts for controlling according to high level signal and low level signal
The Guan Bi of electricity circuit 2 and disconnection.
Control module 11 is DSP (digital signal processor), and the range of voltage values of above-mentioned low level signal is
Less than 0.8V, the range of voltage values of high level signal is above 2V-3.3V.In another embodiment, control
Module 11 is single-chip microcomputer, and the range of voltage values of above-mentioned low level signal is less than 0.8V, high level signal
Range of voltage values is above 2V-5V.
Discharge circuit the 2nd, on-off circuit the 3rd, decision circuitry the 4th, dc source VCC5 and cooling module 6 both may be used
To be arranged in Switching Power Supply 1, it is also possible to be arranged at the outside of Switching Power Supply 1.
When Switching Power Supply 1 accesses switch power supply system, it is judged that circuit 4 output low level signal is to controlling mould
Block 11, low level signal is converted into high level signal simultaneously by the signal conversion unit 111 in control module 11
Output is to on-off circuit 3, and on-off circuit 3 receives conducting after high level signal, and control discharge circuit 2 disconnects,
Discharge circuit 2 stops electric discharge, decreases the energy loss of Switching Power Supply 1.
Switching Power Supply 1 also includes input module the 12nd, PFC module the 13rd, DC-DC module the 14th, rectifying and wave-filtering
Output module 15.Input module 12 is used for exporting initial electrical signal to PFC module 13；PFC module 13
It is connected with input module 12, for receiving initial electrical signal and improve the power factor of the signal of telecommunication, obtain the
One signal of telecommunication simultaneously exports；DC-DC module 14 is connected with PFC module 13, for receiving first signal of telecommunication simultaneously
It is converted into second signal of telecommunication of fixed voltage and export；Rectifying and wave-filtering output module 15 and DC-DC module 14
Connect, for receiving second signal of telecommunication the voltage signal being converted into steady direct current；Control module 11 is respectively
Being connected with PFC module 13 and DC-DC module 14, control module 11 also includes PFC control unit 112
With DC-DC control unit 113, PFC control unit 112 is for sending the first control instruction to PFC module
13, initial electrical signal is converted into first signal of telecommunication to control PFC module 13 and exports, DC-DC controls
Unit 113 is for sending the second control instruction to DC-DC module 14, to control DC-DC module 14 by the
One signal of telecommunication is converted into second signal of telecommunication and exports.
As in figure 2 it is shown, in the present embodiment further, discharge circuit 2 includes thermistor RT, heat
Quick resistance RT is in parallel with the rectifying and wave-filtering output module 15 in Switching Power Supply 1, forms loop.When switch electricity
3rd signal of telecommunication of source 1 output produces heat by thermistor RT and discharges, and then can accelerate switch
The process of power supply 1 electric discharge.Further, discharge circuit 2 also includes the 9th resistance R9, the 9th resistance
R9 is connected with output port and the thermistor RT of Switching Power Supply 1, forms loop, and the 9th resistance R9 is
When the voltage of the output port output of Switching Power Supply 1 is higher, reduce the electric current in discharge circuit 2, in case
Damage thermistor RT.
As in figure 2 it is shown, in the first embodiment, it is judged that circuit includes the 3rd resistance R3 and the 4th resistance R4,
One end of 3rd resistance R3 is connected with one end of the 4th resistance R4, the 3rd resistance R3 other end and direct current
Source VCC connects, and the other end ground connection of the 4th resistance R4, the two ends of the 4th resistance R4 are provided with the first detection
Pin PIN1 and second detection pin PIN2, when Switching Power Supply 1 accesses switch power supply system, the first detection pin
PIN1 and described second detection pin PIN2 short circuit.First detection pin PIN1 and described second detection pin PIN2
Short circuit, and then cause the 4th resistance R4 to be shorted, the junction of the 4th resistance R4 and the 3rd resistance R3
Electromotive force reduces, and the signal of the control module 11 in output to Switching Power Supply 1 is low level signal, thus controls
This low level signal is converted into high level signal and exports to on-off circuit 3, on-off circuit 3 by molding block 11
Connecting and disconnect discharge circuit 2, discharge circuit 2 stops electric discharge.
As in figure 2 it is shown, on-off circuit 3 is relay switching circuit, relay switching circuit includes relay
Drive circuit and relay, relay includes coil L and switch K, and relay drive circuit includes the first electricity
Resistance R1, the second resistance R2, the first electric capacity C1, the first triode Q1, control module the 11st, the first resistance
R1, the first triode Q1, coil L, dc source VCC5 are sequentially connected in series, the second resistance R2 and first electricity
Hold C1 and the first triode Q1 in parallel, and base stage, the colelctor electrode of the first triode Q1 are electric with first respectively
Resistance R1, coil L connect, the base of the two ends of the second resistance R2 or the first electric capacity C1 and the first triode Q1
Pole and emitter stage connect, and wherein the first electric capacity C1 is used for filtering, and the second resistance R2 is the first triode Q1
Pull down resistor.If the first triode Q1 is NPN type, when control module 11 exports high level signal first
Triode Q1 turns on, and during control module 11 output low level signal, the first triode Q1 disconnects；If first
Triode is positive-negative-positive, the first triode Q1 conducting, control module during control module output low level signal
During output high level signal, the first triode Q1 disconnects.When the first triode Q1 is NPN type triode,
Switch K is normally closed, and when coil L is energized, switch K disconnects, otherwise, as the first triode Q2
For PNP type triode, switch K is that normality disconnects, when coil L is energized, and switch K Guan Bi.As excellent
Selection of land, on-off circuit 3 also includes that the tenth resistance R10, the tenth resistance R10 are connected to coil L and dc source
Between VCC5, for limiting the size of current flowing through the first triode Q1 colelctor electrode.
As it is shown on figure 3, in a second embodiment, on-off circuit 3 is transistor switching circuit, and triode is opened
Close circuit and include positive-negative-positive the second triode Q2, the 5th resistance R5, the colelctor electrode of the second triode Q2 and sending out
Emitter-base bandgap grading is series in discharge circuit 2, the two ends of the 5th resistance R5 respectively with control unit the 11 and the 2nd 3 pole
The base stage of pipe Q2 connects, and when control module 11 exports high level signal, the second triode Q2 disconnects, control
During molding block 11 output low level signal, the second triode Q2 conducting.5th resistance R5 is for limiting the
The input current size of two triode Q2 base stages.
As shown in Figure 4, in the third embodiment, controllable semiconductor switch circuit include the 3rd triode Q3,
4th triode Q4, the 5th triode Q5, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8,
3rd electric capacity C3, also includes metal-oxide-semiconductor, and metal-oxide-semiconductor is N-type groove MOS pipe.One end of 6th resistance R6
It is connected with the base stage of the 5th triode Q5 and the other end of the 6th resistance R6 is connected with control module 11, the
The base stage connection of the colelctor electrode of five triode Q5 and the 3rd triode Q3 and the 4th triode Q4 and the five or three
The grounded emitter of pole pipe Q5, the emitter stage of the 3rd triode Q3 and the emitter stage of the 4th triode Q4 are even
Connect and the colelctor electrode of the 3rd triode Q3 is connected with dc source VCC5, the 8th resistance R8 and the 3rd electric capacity
C3 is parallel to the two ends of metal-oxide-semiconductor and is grounded, and the 8th resistance R8 is the pull down resistor of metal-oxide-semiconductor.
The G pole of metal-oxide-semiconductor, the 7th resistance R7, the emitter stage of the 3rd triode Q3 or the 4th triode Q4
It is sequentially connected with, and metal-oxide-semiconductor is series at thermistor RT and rectifying and wave-filtering output module by D pole and S pole
Between 15, when control module 11 exports high level signal, metal-oxide-semiconductor disconnects, and control module 11 exports low
During level signal, MOS turns on.
It as preferably, between the colelctor electrode and dc source VCC5 of the 3rd triode Q3, is connected to the tenth electricity
Resistance R10, for limiting the size of the electric current flowing through the 3rd triode Q3.
In the third embodiment, metal-oxide-semiconductor is also changed to IGBT pipe, the gate pole of IGBT pipe, the 7th resistance R7,
The emitter stage of the 3rd triode Q3 or the 4th triode Q4 is sequentially connected with, and IGBT pipe passes through colelctor electrode
With emitter stage is series between thermistor RT and rectifying and wave-filtering output module 15.Control module 11 exports
During high level signal, IGBT pipe disconnects, and during control module 11 output low level signal, IGBT turns on.
In the third embodiment, the electric current of the collector terminal of the 4th triode Q4 can accelerate metal-oxide-semiconductor or IGBT
Pipe disconnects.
In the first embodiment, it is judged that circuit 4 also includes diode D, diode D and the 4th resistance R4
Parallel connection, and the negative pole of diode D is connected between the 3rd resistance R3 and the 4th resistance R4.Diode D
For stablizing the voltage at the 4th resistance R4 two ends so that the high level signal of output to control module 11 does not surpasses
Cross the maximum voltage value that control module 11 allows.
Discharge control system also includes cooling module 6, and control module 11 also includes control unit 114 of lowering the temperature,
For export cooling control instruction to cooling module 6, adjust rate of temperature fall to control cooling module 6, cooling
Module 6 is connected with dc source VCC5 and control module 11 respectively, is used for receiving cooling control instruction and straight
The direct current signal of stream power supply VCC5 output, to adjust rate of temperature fall and to lower the temperature for discharge control system.
Cooling module 6 includes cooling alignment circuit 61 and cooling unit 62, and cooling unit 62 is for for putting
Electric control system lower the temperature, cooling alignment circuit 61 respectively with control module the 11st, cooling unit 62 and direct current
Power supply VCC5 connects, and for receiving the cooling control signal of control module 11 output, controls DC voltage
VCC5 output to the direct current signal size of cooling unit 62 to adjust the rate of temperature fall of cooling unit 62.
As it is shown in figure 5, the workflow of discharge control system is as follows: Switching Power Supply 1 accesses Switching Power Supply system
System, dc source VCC5 starts working, the first detection pin PIN1 and the second detection pin PIN2 short circuit, sentences
Deenergizing 4 output low level signal, low level signal is converted into high level signal output by control module 11
To on-off circuit 3, on-off circuit 3 disconnects discharge circuit 2, and control module 11 sends cooling control instruction extremely
Cooling alignment circuit 61, cooling alignment circuit 61 reduces dc source VCC5 and inputs to cooling unit 62
Voltage, makes the lower power consumption of cooling unit 62.Switching Power Supply 1 extracts switch power supply system, dc source
VCC5 works on, the first detection pin PIN1 and the second detection non-short circuit of pin PIN2, it is judged that circuit 4 is defeated
Going out high level signal, high level signal is converted into low level signal and exports to on-off circuit by control module 11
3, on-off circuit 3 closes discharge circuit 2, and control module 11 sends cooling control instruction to cooling speed governing electricity
Road 61, cooling alignment circuit 61 regulate dc source VCC5 input to cooling unit 62 voltage for maximum,
Cooling unit 62 starts, with peak power work, to lower the temperature to discharge circuit 2.
In sum, discharge control system involved in the present invention, judges Switching Power Supply by decision circuitry 4
Whether 1 access switch power supply system, when Switching Power Supply 1 accesses switch power supply system, it is judged that circuit 4 is defeated
Going out low level signal, control module 11 receives low level signal and is converted into high level signal output to switch
Circuit 3, on-off circuit 3 connects and disconnects discharge circuit 2, and discharge circuit 2 stops putting for Switching Power Supply 1
Electricity, when Switching Power Supply 1 extracts switch power supply system, it is judged that circuit 4 exports high level signal, controls mould
Block 11 receives this high level signal and is converted into low level signal output to on-off circuit 3, on-off circuit 3
Being not turned on, discharge circuit 2 closes and starts to discharge for Switching Power Supply 1.Above-mentioned discharge control system makes
When Switching Power Supply 1 uses in accessing switch power supply system, electric discharge can be stopped, decreasing Switching Power Supply 1
Loss, simultaneously do not produce heat at discharge circuit so that extract switch power supply system in Switching Power Supply 1
When just start electric discharge and produce heat, improve the discharging efficiency of discharge circuit.Further, put above-mentioned
Electric control system is provided with cooling module 6, is that above-mentioned discharge control system produces during electric discharge
Heat is lowered the temperature, and can improve the discharging efficiency of discharge circuit 2, and meanwhile, cooling module 6 is in the course of the work
Also can increase the discharge rate of dc source VCC5, and then increase the discharge rate of Switching Power Supply 1.
It should be understood that above example only have expressed the preferred embodiment of the present invention, its description more has
Body and in detail, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention；It should be pointed out that,
For the person of ordinary skill of the art, without departing from the inventive concept of the premise, can be to above-mentioned
Technical characterstic carries out independent assortment, can also make some deformation and improve, and these broadly fall into the guarantor of the present invention
Protect scope；Therefore, all equivalents done with scope of the invention as claimed and modification, all should belong to this
The covering scope of invention claim.
Claims (10)
1. a discharge control system, including Switching Power Supply and dc source VCC, it is characterised in that described Switching Power Supply includes control module, and described discharge control system also includes discharge circuit, on-off circuit, decision circuitry；
Described discharge circuit, is connected with described Switching Power Supply, for the electric discharge of described Switching Power Supply；
Described decision circuitry, is used for judging whether described Switching Power Supply accesses switch power supply system, if described Switching Power Supply accesses described switch power supply system, then output low level signal, if described Switching Power Supply extracts described switch power supply system, then exports high level signal；
Described control module, is connected with described decision circuitry, including signal conversion unit, exports for described low level signal is converted into high level signal, or high level signal is converted into low level signal output；
Described on-off circuit, is connected with described discharge circuit, for controlling Guan Bi and the disconnection of described discharge circuit according to described high level signal and described low level signal.
2. discharge control system according to claim 1, it is characterised in that described Switching Power Supply also includes input module, PFC module, DC-DC module, rectifying and wave-filtering output module, described input module, is used for exporting initial electrical signal to described PFC module；
Described PFC module, is connected with described input module, for the power factor receiving described initial electrical signal and improve described initial electrical signal, obtains first signal of telecommunication and exports；
Described DC-DC module, is connected with described PFC module, for receiving described first signal of telecommunication and being converted into second signal of telecommunication of fixed voltage and export；
Described rectifying and wave-filtering output module, is connected with described DC-DC module, for the voltage signal output receiving described second signal of telecommunication and be converted into steady direct current；
Described control module, it is connected with described PFC module and described DC-DC module respectively, also include PFC control unit and DC-DC control unit, described PFC control unit is for sending the first control instruction to described PFC module, described initial electrical signal is converted into described first signal of telecommunication to control described PFC module and exports, described DC-DC control unit, for sending the second control instruction extremely described DC-DC module, described first signal of telecommunication is converted into described second signal of telecommunication to control described DC-DC module and exports.
3. discharge control system according to claim 2, it is characterised in that described discharge circuit includes thermistor RT, described thermistor RT is in parallel with described rectifying and wave-filtering output module.
null4. discharge control system according to claim 2，It is characterized in that，Described on-off circuit is relay switching circuit，Including relay drive circuit and relay，Described relay includes coil L and switch K，Relay drive circuit includes the first resistance R1、Second resistance R2、First electric capacity C1、First triode Q1，Described control module、Described first resistance R1、Described first triode Q1、Described coil L、Described dc source VCC is sequentially connected in series，Described second resistance R2 and described first electric capacity C1 is in parallel with described first triode Q1，And the base stage of described first triode Q1、Colelctor electrode respectively with described first resistance R1、Described coil L connects，The described two ends of the second resistance R2 or described first electric capacity C1 are connected with base stage and the emitter stage of described first triode Q1，If described first triode Q1 is NPN type，First triode Q1 described in when described control module exports described high level signal turns on，If described first triode is positive-negative-positive，First triode Q1 described in when described control module exports described low level signal turns on，Described second resistance R2 is the pull down resistor of described first triode Q1.
5. discharge control system according to claim 2, it is characterized in that, described on-off circuit is transistor switching circuit, including positive-negative-positive the second triode Q2, the 5th resistance R5, the collector and emitter of described second triode Q2 is series in described discharge circuit, the two ends of described 5th resistance R5 are connected with the base stage of described control unit and described second triode Q2 respectively, when described control module exports described high level signal, described second triode Q2 disconnects, when described control module exports described low level signal, described second triode Q2 conducting.
null6. discharge control system according to claim 2，It is characterized in that，Described on-off circuit is controllable semiconductor switch circuit，Including the 3rd triode Q3、4th triode Q4、5th triode Q5、6th resistance R6、7th resistance R7、8th resistance R8、3rd electric capacity C3，Also include metal-oxide-semiconductor or IGBT pipe，Described metal-oxide-semiconductor is N-type groove MOS pipe，One end of described 6th resistance R6 is connected with the base stage of described 5th triode Q5 and the other end is connected with described control module，The colelctor electrode of described 5th triode Q5 is connected and grounded emitter with the base stage of described 3rd triode Q3 and described 4th triode Q4，The emitter stage of described 3rd triode Q3 is connected with the emitter stage of described 4th triode Q4 and colelctor electrode is connected with described dc source VCC，Described 8th resistance R8 and described 3rd electric capacity C3 is parallel to the two ends of described metal-oxide-semiconductor or described IGBT pipe and is grounded，Described 3rd electric capacity is used for filtering，Described 8th resistance R8 is the pull down resistor of described metal-oxide-semiconductor，
The G pole of described metal-oxide-semiconductor, described 7th resistance R7, the emitter stage of described 3rd triode Q3 or described 4th triode Q4 are sequentially connected with, and described metal-oxide-semiconductor is series between described thermistor RT and described rectifying and wave-filtering output module by D pole and S pole, when described control module exports described high level signal, described metal-oxide-semiconductor disconnects, when described control module exports described low level signal, described MOS turns on
Or, the gate pole of described IGBT pipe, described 7th resistance R7, the emitter stage of described 3rd triode Q3 or described 4th triode Q4 are sequentially connected with, and described IGBT pipe is series between described thermistor RT and described rectifying and wave-filtering output module by collector and emitter, when described control module exports described high level signal, described IGBT pipe disconnects, when described control module exports described low level signal, described IGBT turns on.
7. discharge control system according to claim 2, it is characterised in that described decision circuitry includes the 3rd resistance R3, the 4th resistance R4 and diode D,
One end of described 3rd resistance R3 is connected with one end of described 4th resistance R4, the described 3rd resistance R3 other end is connected with described dc source VCC, the other end ground connection of described 4th resistance R4, the two ends of described 4th resistance R4 are provided with the first detection pin PIN1 and second detection pin PIN2, when described Switching Power Supply accesses described switch power supply system, described first detection pin PIN1 and described second detection pin PIN2 short circuit；
Described diode D is in parallel with described 4th resistance R4, and the negative pole of described diode D is connected between described 3rd resistance R3 and described 4th resistance R4.
8. discharge control system according to claim 3, it is characterised in that described discharge circuit also includes that the 9th resistance R9, described 9th resistance R9 are connected with described thermistor RT and described rectifying and wave-filtering output module respectively.
9. the discharge control system according to claim 1-8 any one, it is characterized in that, described discharge control system also includes cooling module, described control module also includes control unit of lowering the temperature, for exporting cooling control instruction to described cooling module, adjust rate of temperature fall with the described cooling module of control, described cooling module is connected with described dc source VCC and described control module respectively, for receiving the direct current signal of described cooling control instruction and described dc source VCC output, to adjust rate of temperature fall and to lower the temperature for described discharge control system.
10. discharge control system according to claim 9, it is characterized in that, described cooling module includes cooling alignment circuit and cooling unit, described cooling unit is for lowering the temperature for described discharge control system, described cooling alignment circuit is connected with described control module, described cooling unit and described dc source VCC respectively, for receiving the cooling control signal of described control module output, the direct current signal size controlling described DC voltage VCC output to described cooling unit is to adjust the rate of temperature fall of described cooling unit.
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| CN201510098534.7A CN105991025A (en) | 2015-03-05 | 2015-03-05 | Discharge control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510098534.7A CN105991025A (en) | 2015-03-05 | 2015-03-05 | Discharge control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107154726A (en) * | 2016-03-03 | 2017-09-12 | 通用汽车环球科技运作有限责任公司 | Equipment for discharging high-voltage bus |
| CN108429441A (en) * | 2018-02-12 | 2018-08-21 | 宁波宇喆电子科技有限公司 | A kind of protection circuit of memory programming circuit |
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| CN102064719A (en) * | 2010-11-02 | 2011-05-18 | 深圳创维－Rgb电子有限公司 | LED (Light Emitting Diode) backlight power source circuit, backlight power source and multimedia device |
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Application publication date: 20161005 |