CN105717835A - Electric appliance and mainboard discharge control method and device - Google Patents
Electric appliance and mainboard discharge control method and device Download PDFInfo
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- CN105717835A CN105717835A CN201610071092.1A CN201610071092A CN105717835A CN 105717835 A CN105717835 A CN 105717835A CN 201610071092 A CN201610071092 A CN 201610071092A CN 105717835 A CN105717835 A CN 105717835A
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- 238000004378 air conditioning Methods 0.000 claims description 9
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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Abstract
The invention discloses an electric appliance and a mainboard discharge control method and device. The mainboard discharge control method comprises the following steps: acquiring voltages at two ends of a capacitor on a mainboard; judging whether the capacitor meets a discharging condition or not according to the voltages at two ends of the capacitor; if the capacitor meets the discharge condition, determining a discharge resistor according to the voltage at the two ends of the capacitor; the capacitor is discharged through the determined discharge resistance. The invention solves the problem of low mainboard discharge efficiency.
Description
Technical field
The present invention relates to appliance field, in particular to a kind of electrical equipment and mainboard discharge control method and device.
Background technology
After the functional test of current mainboard completes, in order to prevent the generation of the situations such as component damage in the electricity electrical equipment that causes of reason, following two measure is usually taken device is discharged:
First kind of way is nature electric discharge, and whether this mode discharging efficiency is low, discharge simultaneously and cannot know completely, uncontrollable；
The second way is artificially to load external loading (being usually resistance) electric discharge, and this kind of mode needs artificially to judge discharge time, can there is length discharge time efficiency low, and discharge time is short is likely to incomplete problem of discharging.
For the problem that mainboard discharging efficiency in correlation technique is low, effective solution is not yet proposed at present.
Summary of the invention
A kind of electrical equipment of offer and mainboard discharge control method and device, the problem low to solve mainboard discharging efficiency are provided.
To achieve these goals, according to an aspect of the invention, it is provided a kind of mainboard discharge control method, the method includes: obtain the voltage at electric capacity two ends on mainboard；Voltage according to electric capacity two ends judges whether electric capacity meets discharging condition；If it is determined that electric capacity meets discharging condition, then the voltage according to electric capacity two ends determines discharge resistance；And electric capacity is discharged by the discharge resistance being determined by.
Further, the voltage at these electric capacity two ends is more big, it is determined that discharge resistance more big.
Further, determine that discharge resistance includes according to the voltage at electric capacity two ends: judge that whether the voltage at electric capacity two ends is be more than or equal to the first predeterminated voltage；If the voltage at electric capacity two ends is be more than or equal to the first predeterminated voltage, it is determined that discharge resistance is the first resistance；If the voltage at electric capacity two ends is less than the first predeterminated voltage, it is judged that whether the voltage at electric capacity two ends is be more than or equal to the second predeterminated voltage, wherein, the second predeterminated voltage is less than the first predeterminated voltage；If the voltage at electric capacity two ends is less than the first predeterminated voltage and be more than or equal to the second predeterminated voltage, it is determined that discharge resistance is the first resistance and the parallel resistance of the second resistance.
Further, if the voltage at electric capacity two ends is less than the second predeterminated voltage, the method also includes: judging that whether the voltage at electric capacity two ends is be more than or equal to the 3rd predeterminated voltage, wherein, the 3rd predeterminated voltage is less than the second predeterminated voltage；If the voltage at electric capacity two ends is less than the second predeterminated voltage and be more than or equal to the 3rd predeterminated voltage, it is determined that discharge resistance is the first resistance, the parallel resistance of the second resistance and the second resistance.
To achieve these goals, according to a further aspect in the invention, it is provided that a kind of mainboard discharge control device, this device includes: voltage collection circuit, for obtaining the voltage at electric capacity two ends on mainboard；Host computer, is connected with voltage collection circuit, for when determining that electric capacity meets discharging condition, determining discharge resistance according to the voltage at electric capacity two ends；And discharge circuit, it is connected with host computer, for the discharge resistance determined according to host computer, electric capacity is discharged.
Further, this discharge circuit includes: multiple resistance；Multiple switches, are connected with multiple resistance respectively, for a resistance in multiple resistance accessing discharge circuit or the multiple resistor coupled in parallel in multiple resistance being accessed discharge circuit；Single-chip microcomputer, is connected with host computer, for receiving the control instruction of host computer；Driving chip, is connected with single-chip microcomputer, for generating driving instruction according to control instruction；And multiple relay, it is connected with driving chip, for controlling Guan Bi or the disconnection of multiple switch respectively according to driving instruction.
Further, this discharge circuit also includes: multiple diodes, in parallel with multiple relays respectively；Multiple electric capacity, in parallel with multiple relays respectively.
Further, multiple relays include: the first relay, are connected with driving chip, for controlling Guan Bi or the disconnection of the first switch according to driving instruction；Second relay, is connected with driving chip, and for controlling Guan Bi or the disconnection of second switch according to driving instruction, multiple resistance include: the first resistance, connect with the first switch, when the first switch Guan Bi, with the first resistance, electric capacity is discharged；Second resistance, connects with second switch, when second switch closes, with the first resistor coupled in parallel, electric capacity is discharged.
Further, multiple relays also include: the 3rd relay, are connected with driving chip, for controlling Guan Bi or the disconnection of the 3rd switch according to driving instruction；Multiple resistance also include: the 3rd resistance, are connected with the 3rd relay, and when the 3rd switch Guan Bi, with the first resistance, electric capacity is discharged by the second resistor coupled in parallel.
Further, voltage collection circuit includes: voltage sensor, is connected with electric capacity two ends on mainboard, for gathering the voltage at electric capacity two ends on mainboard；Voltage acquisition chip, is connected with voltage sensor and host computer, for sending the voltage signal at electric capacity two ends to host computer.
To achieve these goals, according to a further aspect in the invention, it is provided that a kind of electrical equipment, this electrical equipment includes mainboard discharge control device provided by the invention.
Further, this electrical equipment is air-conditioning.
The present invention is by obtaining the voltage at electric capacity two ends on mainboard；Voltage according to electric capacity two ends judges whether electric capacity meets discharging condition；If it is determined that electric capacity meets discharging condition, then the voltage according to electric capacity two ends determines discharge resistance；And electric capacity is discharged by the discharge resistance being determined by, solve the problem that mainboard discharging efficiency is low, and then reached to improve the effect of mainboard discharging efficiency.
Accompanying drawing explanation
The accompanying drawing constituting the part of the application is used for providing a further understanding of the present invention, and the schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of mainboard discharge control method according to a first embodiment of the present invention；
Fig. 2 is the schematic diagram of mainboard discharge control device according to a first embodiment of the present invention；
Fig. 3 is the schematic diagram of mainboard discharge control device according to a second embodiment of the present invention；And
Fig. 4 is the flow chart of mainboard discharge control method according to a second embodiment of the present invention.
Detailed description of the invention
It should be noted that when not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
In order to make those skilled in the art be more fully understood that the application scheme, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only the embodiment of the application part, rather than whole embodiments.Based on the embodiment in the application, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, all should belong to the scope of the application protection.
It should be noted that term " first " in the description and claims of this application and above-mentioned accompanying drawing, " second " etc. are for distinguishing similar object, without being used for describing specific order or precedence.Should be appreciated that the data of so use can be exchanged in the appropriate case, in order to embodiments herein described herein.In addition, term " includes " and " having " and their any deformation, it is intended to cover non-exclusive comprising, such as, contain series of steps or the process of unit, method, system, product or equipment be not necessarily limited to those steps or the unit clearly listed, but can include clearly not listing or for intrinsic other step of these processes, method, product or equipment or unit.
Embodiments provide a kind of mainboard discharge control method.
Fig. 1 is the flow chart of mainboard discharge control method according to a first embodiment of the present invention, as it is shown in figure 1, the method comprises the following steps:
Step S102: obtain the voltage at electric capacity two ends on mainboard.
In embodiments of the present invention, mainboard can be the mainboard of multiple electrical equipment, for instance, TV motherboard, refrigerator mainboard, the mainboard of the intelligent terminal such as mobile phone, air-conditioning mainboard etc., it is preferable that this mainboard is air-conditioning mainboard.Due to the functional test (FunctionalCircuitTest to air-conditioning mainboard, referred to as FCT) complete after, on mainboard electric capacity, remaining has a large amount of residual charge, between electric capacity two-plate, voltage is bigger, easily cause the damage of components and parts, therefore after FCT completes, for the device failure preventing the reasons such as electricity from causing, mainboard is discharged, first the voltage at electric capacity two ends on mainboard is obtained, the voltage at electric capacity two ends on mainboard can be obtained by multiple method, such as, voltage sensor can be passed through and obtain the voltage at electric capacity mainboard two ends, other can also be adopted can to obtain on mainboard the method for the voltage at electric capacity two ends to obtain the voltage at electric capacity two ends on mainboard.Wherein, mainboard has multiple electric capacity, after FCT completes, obtain the voltage at multiple electric capacity two ends on mainboard, it is possible to obtain the voltage at all electric capacity two ends on mainboard, it is also possible to obtain the voltage at the electric capacity two ends worked in FCT process.Preferably, the voltage at electric capacity two ends on mainboard is carried out detection in real time to obtain the voltage at electric capacity two ends on mainboard.
Step S104: judge whether electric capacity meets discharging condition according to the voltage at electric capacity two ends.
Judge whether electric capacity meets discharging condition and can be whether the voltage judging electric capacity two ends exceedes default discharge voltage, if the voltage at electric capacity two ends exceedes default discharge voltage, judge that electric capacity meets discharging condition, such as, default discharge voltage is 1V, if the voltage at electric capacity two ends is more than 1V, then judge that electric capacity meets discharging condition, if the voltage at electric capacity two ends is less than 1V, then judge that electric capacity is unsatisfactory for discharging condition.It can also be judge whether electric capacity meets other discharging conditions that voltage according to electric capacity two ends judges whether electric capacity meets discharging condition, for instance, judge whether electric capacity is complete FCT according to the voltage variety at electric capacity two ends, be in state to be discharged.
Step S106: if it is determined that electric capacity meets discharging condition, then the voltage according to electric capacity two ends determines discharge resistance.
In order to prevent the excessive device caused of electric current in discharge process from crossing stream or crossing the dangerous electric discharge such as cause thermal damage, determine that discharge resistance can be that the voltage at electric capacity two ends is more big according to the voltage at electric capacity two ends, it is determined that discharge resistance more big.That is, in order to ensure that, in electric capacity discharge process, electric current is all the time within safety range, therefore, when voltage is more big, discharge resistance is more big, and simultaneously in order to improve discharging efficiency, when voltage declines, reduce discharge resistance to ensure that electric current improves discharging efficiency when safety range.Determine that discharge resistance can determine that the resistance size of discharge resistance, it is also possible to determine that the number of discharge resistance.
Preferably, according to the change in voltage at electric capacity two ends, electric capacity is carried out multistage electric discharge, determine that discharge resistance may is that whether the voltage judging electric capacity two ends is be more than or equal to the first predeterminated voltage according to the voltage at electric capacity two ends；If the voltage at electric capacity two ends is be more than or equal to the first predeterminated voltage, it is determined that discharge resistance is the first resistance；If the voltage at electric capacity two ends is less than the first predeterminated voltage, it is judged that whether the voltage at electric capacity two ends is be more than or equal to the second predeterminated voltage, wherein, the second predeterminated voltage is less than the first predeterminated voltage；If the voltage at electric capacity two ends is less than the first predeterminated voltage and be more than or equal to the second predeterminated voltage, it is determined that discharge resistance is the first resistance and the parallel resistance of the second resistance.
If the voltage at electric capacity two ends is less than the second predeterminated voltage, it is judged that whether the voltage at electric capacity two ends is be more than or equal to the 3rd predeterminated voltage, wherein, the 3rd predeterminated voltage is less than the second predeterminated voltage；If the voltage at electric capacity two ends is less than the second predeterminated voltage and be more than or equal to the 3rd predeterminated voltage, it is determined that discharge resistance is the first resistance, the parallel resistance of the second resistance and the second resistance.
It can be that electric capacity is carried out two-stage discharge by the change in voltage according to electric capacity two ends that electric capacity is carried out multistage electric discharge by the change in voltage according to electric capacity two ends, can also be three grades of electric discharges or level Four electric discharge, preferably, according to the change in voltage at electric capacity two ends, electric capacity carried out three grades of electric discharges.
Voltage according to electric capacity two ends determines that discharge resistance may is that the voltage range residing for the voltage judging electric capacity two ends, if the voltage range residing for the voltage at electric capacity two ends is the scope be more than or equal to the first predeterminated voltage, then electric capacity is discharged with the first resistance for discharge resistance；If the voltage range residing for the voltage at electric capacity two ends is less than first predeterminated voltage scope be more than or equal to the second predeterminated voltage, then with the parallel resistance of the first resistance and the second resistance, electric capacity is discharged；If the voltage range residing for the voltage at electric capacity two ends is that then with the first resistance, electric capacity is discharged by the parallel resistance of the second resistance and the 3rd resistance less than second predeterminated voltage scope be more than or equal to the 3rd predeterminated voltage.Can effectively control discharge current and discharge time by three discharge regimes, not only can guarantee that electric discharge thoroughly but also can improve discharging efficiency.Meanwhile, reduce discharge resistance by parallel resistance gradually and can effectively reduce the factors such as multiple circuit that single conductive discharge handoff procedure causes is unstable, further increase discharging efficiency.Generally, can through above-mentioned three grades of discharge processes in an electric capacity discharge process after FCT completes.In a discharge process, electric capacity is discharged by the voltage at real-time testing electric capacity two ends with the Voltage Cortrol discharge resistance according to electric capacity two ends.
When resistor coupled in parallel being entered discharge circuit electric capacity being discharged, it is alternatively possible to by the access of Control resistance, for instance, control switch Guan Bi after the first relay power, electric capacity is discharged by the first resistance access circuit；Control switch Guan Bi after second relay power, the second resistance and the first resistor coupled in parallel are accessed circuit electric capacity is discharged；Control switch Guan Bi after 3rd relay power, the 3rd resistance, the second resistance and the first resistor coupled in parallel are accessed circuit electric capacity is discharged.Saying that resistor coupled in parallel enters can also adopt when electric capacity is discharged by discharge circuit other circuit devcie resistance connecting into electric capacity to be discharged.
Alternatively, above-mentioned judgement and control process can be undertaken judging and controlling by host computer computer or controller.Relay power can be controlled by driving chip, so that resistance is accessed discharge circuit when controlling relay power.
Step S108: electric capacity is discharged by the discharge resistance being determined by.
After determining discharge resistance according to the voltage at electric capacity two ends, electric capacity is discharged by the discharge resistance being determined by.It can be the discharge resistance determined is connected to mainboard electric capacity two ends discharge to electric capacity that electric capacity is carried out electric discharge by the discharge resistance being determined by.Until test arrives the voltage at electric capacity two ends less than default discharge voltage, namely stop electric capacity being discharged, for instance, use relay that the discharge resistance determined is connected into discharge circuit and electric capacity is discharged, if
This embodiment adopts and obtains the voltage at electric capacity two ends on mainboard；Voltage according to electric capacity two ends judges whether electric capacity meets discharging condition；If it is determined that electric capacity meets discharging condition, then the voltage according to electric capacity two ends determines discharge resistance；Electric capacity is discharged by the discharge resistance being determined by, thus solving the problem that mainboard discharging efficiency is low, and then has reached to improve the effect of mainboard discharging efficiency.
Embodiments provide a kind of mainboard discharge control device, this mainboard discharge control device may be used for performing the mainboard discharge control method of the embodiment of the present invention, Fig. 2 is the schematic diagram of mainboard discharge control device according to a first embodiment of the present invention, as shown in Figure 2, this mainboard discharge control device includes: voltage collection circuit 10, host computer 20, discharge circuit 30.
Voltage collection circuit 10, for obtaining the voltage at electric capacity two ends on mainboard.
Alternatively, voltage collection circuit 10 includes: voltage sensor, is connected with electric capacity two ends on mainboard, for gathering the voltage at electric capacity two ends on mainboard；Voltage acquisition chip, is connected with voltage sensor and host computer 20, for sending the voltage signal at electric capacity two ends to host computer 20.On the mainboard that voltage sensor can be collected by voltage acquisition chip, the voltage signal at electric capacity two ends sends to host computer 20, alternatively, voltage acquisition chip can to sensor acquisition to mainboard on after the voltage signal at electric capacity two ends is simulated numeral conversion, digital signal is sent to host computer 20.
Host computer 20, is connected with voltage collection circuit 10, for when determining that electric capacity meets discharging condition, determining discharge resistance according to the voltage at electric capacity two ends.Host computer 20 receives the voltage signal at the electric capacity two ends that voltage collection circuit 10 sends, judge whether magnitude of voltage meets discharging condition, such as judge whether magnitude of voltage exceedes default discharge voltage, if magnitude of voltage exceedes default discharge voltage, then judge that magnitude of voltage meets discharging condition.Host computer 20, when determining that electric capacity meets discharging condition, determines discharge resistance according to the voltage at electric capacity two ends.Determine that discharge resistance can determine that the resistance size of discharge resistance, it is also possible to determine that the number of discharge resistance.
Discharge circuit 30, is connected with host computer 20, for the discharge resistance determined according to host computer 20, electric capacity is discharged.
Discharge circuit 30 includes multiple resistance；Multiple switches, are connected with multiple resistance respectively, for a resistance in multiple resistance accessing discharge circuit 30 or the multiple resistor coupled in parallel in multiple resistance being accessed discharge circuit 30；Single-chip microcomputer, is connected with host computer 20, for receiving the control instruction of host computer 20；Driving chip, is connected with single-chip microcomputer, for generating driving instruction according to control instruction；And multiple relay, it is connected with driving chip, for controlling Guan Bi or the disconnection of multiple switch respectively according to driving instruction.
In discharge circuit 30, single-chip microcomputer receives the control instruction that host computer 20 sends, control instruction is sent to driving chip, driving chip generates driving instruction according to control instruction, drive energising and the power-off of multiple relay, during relay control switch Guan Bi, discharge resistance accesses circuit, and electric capacity is discharged.Wherein, discharge circuit 30 can include multiple relay, multiple switches and multiple resistance, each relay and a switch and a resistance is a discharge cell.Alternatively, multiple relays include: the first relay, are connected with driving chip, for controlling Guan Bi or disconnection, second relay of the first switch according to driving instruction, are connected with driving chip, for controlling Guan Bi or the disconnection of second switch according to driving instruction；Multiple resistance include: the first resistance, connect with the first switch, when the first switch Guan Bi, with the first resistance, electric capacity are discharged；Second resistance, connects with second switch, and when second switch closes, electric capacity is discharged by the second resistance and the first resistor coupled in parallel.
Multiple relays also include: the 3rd relay, are connected with driving chip, for controlling Guan Bi or the disconnection of the 3rd switch according to driving instruction；Multiple resistance also include: the 3rd resistance, are connected with the 3rd relay, and when the 3rd switch Guan Bi, with the first resistance, electric capacity is discharged by the second resistor coupled in parallel.
Alternatively, discharge circuit 30 can also include the 4th relay, the 4th switch and the 4th resistance, the closed and disconnected of the 4th Control the 4th switch, when the 4th switch Guan Bi, electric capacity is discharged by the first resistance, the second resistance, the 3rd resistance and the 4th resistor coupled in parallel.
Preferably, by three relays, three switches and three resistance three grades of discharge cells of composition, electric capacity is discharged.
Discharge circuit 30 also includes: multiple diodes, in parallel with multiple relays respectively；Multiple electric capacity, in parallel with multiple relays respectively.Each diode and each Capacitance parallel connection are at relay two ends, for relay is carried out over-current over-voltage protection.
Alternatively, by 485 communication transfer signal and instructions between voltage acquisition chip and host computer 20, also by 485 communication transfer signal and instructions between single-chip microcomputer and host computer 20.
This mainboard discharge control device can apply to multiple electrical equipment, for instance, TV, refrigerator, air-conditioning, intelligent terminal etc., it is preferable that, it is possible to it is applied in air-conditioning.
This embodiment adopts voltage collection circuit 10 to obtain the voltage at electric capacity two ends on mainboard, host computer 20 is connected with voltage collection circuit 10, when determining that electric capacity meets discharging condition, voltage according to electric capacity two ends determines discharge resistance, discharge circuit 30 is connected with host computer 20, according to the discharge resistance that host computer 20 is determined, electric capacity being discharged, thus solving the problem that mainboard discharging efficiency is low, and then having reached to improve the effect of mainboard discharging efficiency.
Fig. 3 is the schematic diagram of mainboard discharge control device according to a second embodiment of the present invention, as it is shown on figure 3, this mainboard discharge control device includes:
Voltage collection circuit 10, for obtaining the voltage at electric capacity two ends on mainboard.
Voltage collection circuit 10 includes voltage sensor V1, resistance R5, resistance R6, resistance R4, electric capacity C5, voltage acquisition chip 101.6th pin of voltage sensor V1 is connected with the negative pole of mainboard electric capacity; 5th pin passes through resistance R5; the series resistance of resistance R6 is protected in the positive pole of mainboard electric capacity and connects the voltage with testing capacitor two ends; 4th pin and the 3rd pin connect and ground connection; second pin is connected with+12V voltage; first pin is outfan, is connected with voltage acquisition chip 101 by resistance R6, and the voltage at electric capacity two ends on mainboard is delivered to voltage acquisition chip 101.The voltage input end of voltage acquisition chip is also by electric capacity C5 ground connection.Voltage acquisition chip 101 can be microprocessor.Alternatively, resistance R5 can adopt the resistance of 1000K ohm, resistance R6 that the resistance of 1000K ohm, electric capacity C5 can be adopted can to adopt the electric capacity of 0.1UF, and resistance R4 can adopt the resistance of 100 ohm.
Host computer 20, for being connected with voltage collection circuit 10, for when determining that electric capacity meets discharging condition, determining discharge resistance according to the voltage at electric capacity two ends.Host computer 20 can be computer.Host computer 20 can carry out the transmission of signal and instruction by 485 communications and voltage acquisition chip 101.Host computer 20 can carry out the transmission of signal and instruction by 485 communications and single-chip microcomputer 304.
Discharge circuit 30, for being connected with host computer 20, discharges to electric capacity for the discharge resistance determined according to host computer 20.
The single-chip microcomputer 304 of discharge circuit 30 is connected with host computer 20, receive the control instruction of host computer 20, control instruction is sent to driving chip U1, single-chip microcomputer 304 can be microprocessor, control of discharge can be carried out, driving chip U1 has multiple pin, wherein the first pin, second pin and the 3rd pin are connected with single-chip microcomputer 304, receive control instruction, driving instruction is generated according to control instruction, 16th pin and the first relay 301 connect control the first relay 301 and are energized and power-off, 15th pin and the second relay 302 connect control the second relay 302 and are energized and power-off, 14th pin and the 3rd relay 303 connect control the 3rd relay 303 and are energized and power-off, host computer 20 determines discharge resistance according to the voltage at electric capacity two ends, generate control of discharge instruction, driving chip U1 drives relay work according to control instruction, wherein, when the first relay 301 is energized, first switch K1 Guan Bi, first resistance R1 is connected to electric capacity two ends and electric capacity is discharged；When second relay 302 is energized, second switch K2 also closes, and electric capacity is discharged by the second resistance R2 and the first resistance R1 parallel connection；When 3rd relay 303 is energized, 3rd switch K3 also closes, electric capacity is discharged by the 3rd resistance R3 and the first resistance R1 and the second resistance R2 parallel connection, in discharge process, voltage sensor V1 detects the voltage at electric capacity two ends on mainboard in real time, when the voltage at electric capacity two ends is less than default discharge voltage, stops the electric capacity on mainboard is discharged, now, three wholly off energisings of relay, three switch off, and stop electric capacity being discharged.
Alternatively; for protective relay; first relay 301 and electric capacity C1; diode D1 is in parallel; wherein; first end of the first relay 301 is connected with the anode of first end of electric capacity C1 and diode D1, and the second end of the first relay 301 is connected with the negative electrode of second end of electric capacity C1 and diode D1 and is connected with+12V voltage；First end of the second relay 302 is connected with the anode of first end of electric capacity C2 and diode D2, and the second end of the second relay 302 is connected with the negative electrode of second end of electric capacity C2 and diode D2 and is connected with+12V voltage；First end of the 3rd relay 303 is connected with the anode of first end of electric capacity C3 and diode D3, and the second end of the 3rd relay 303 is connected with the negative electrode of second end of electric capacity C3 and diode D3 and is connected with+12V voltage.3rd end of the first switch K1 is connected with the positive pole of mainboard electric capacity with the 3rd end of the 3rd end of second switch K2 and the 3rd switch K3, and the 4th end of the first switch K1 is connected with the positive pole of mainboard electric capacity with the 4th end of the 4th end of second switch K2 and the 3rd switch K3.The 8th pin ground connection of driving chip U1, the 9th pin is connected with+12V voltage, and, the 8th pin and the 9th pin are connected by the 4th electric capacity.
This embodiment adopts voltage collection circuit 10 to obtain the voltage at electric capacity two ends on mainboard, host computer 20 is connected with voltage collection circuit 10, when determining that electric capacity meets discharging condition, voltage according to electric capacity two ends determines discharge resistance, discharge circuit 30 is connected with host computer 20, according to the discharge resistance that host computer 20 is determined, electric capacity being discharged, thus solving the problem that mainboard discharging efficiency is low, and then having reached to improve the effect of mainboard discharging efficiency.
It should be noted that, can perform in the computer system of such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing, and, although illustrating logical order in flow charts, but in some cases, it is possible to perform shown or described step with the order being different from herein.
Fig. 4 is the flow chart of mainboard discharge control method according to a second embodiment of the present invention, the mainboard discharge control method of this embodiment can be applied in the mainboard discharge control device of second embodiment of the invention, as shown in Figure 4, in embodiments of the present invention, V0 represents the voltage at mainboard electric capacity two ends, and V1 represents the first predeterminated voltage, V2 represents the second predeterminated voltage, V3 represents the 3rd predeterminated voltage and V1 > V2 > V3, and this mainboard discharge control method includes:
Step S201, it is judged that V0 >=V1.
Judge that whether the voltage at mainboard electric capacity two ends is be more than or equal to the first predeterminated voltage, if it is judged that the voltage at mainboard electric capacity two ends is more than the first predeterminated voltage, then perform step S202.
Step S202, K1 adhesive.
If it is judged that the voltage at mainboard electric capacity two ends is more than the first predeterminated voltage, then controls switch K1 adhesive, with the first resistance, electric capacity is discharged.
Step S203, it is judged that V1 > V0 >=V2.
Judge whether the voltage at mainboard electric capacity two ends meets less than the first predeterminated voltage and be more than or equal to the second predeterminated voltage, if it is judged that less than the first predeterminated voltage and be more than or equal to the second predeterminated voltage, then perform step S204, if it is judged that the voltage condition is not satisfied at electric capacity two ends, then the voltage continuing to be discharged to electric capacity two ends meets V1 > V0 >=V2.
Step S204, K2 adhesive.
Voltage at electric capacity two ends meets V1 > after V0 >=V2, control switch K2 adhesive, with the parallel resistance of the first resistance and the second resistance, electric capacity is discharged.
Step S205, it is judged that V2 > V0 >=V3.
Judge whether the voltage at mainboard electric capacity two ends meets less than the second predeterminated voltage and be more than or equal to the 3rd predeterminated voltage, if it is judged that less than the second predeterminated voltage and be more than or equal to the 3rd predeterminated voltage, then perform step S206, if it is judged that the voltage condition is not satisfied at electric capacity two ends, then the voltage continuing to be discharged to electric capacity two ends meets V2 > V0 >=V3.
Step S206, K3 adhesive.
Voltage at electric capacity two ends meets V2 > after V0 >=V3, control switch K3 adhesive, with the parallel resistance of the first resistance, the second resistance and the 3rd resistance, electric capacity is discharged.
Step S207, V0 are less than setting value.
Setting value can be default minimum discharge voltage value, when the voltage at mainboard electric capacity two ends being detected less than the discharge voltage set, the electric discharge of mainboard electric capacity is complete, and host computer report is qualified and exits electric discharge, now relay stops energising, switches off to stop the electric discharge to electric capacity.
This embodiment is by monitoring the voltage at electric capacity two ends in real time, scope according to electric capacity both end voltage determines the resistance to electric capacity electric discharge, with the resistance determined, electric capacity is discharged, control discharge current and discharge time, improve the discharging efficiency of mainboard electric capacity, efficiently control electric capacity thoroughly to discharge, prevent the problems such as the excessive electrical equipment damage brought of discharge current simultaneously, also improve testing efficiency.
The embodiment of the present invention additionally provides a kind of electrical equipment, and this electrical equipment includes the mainboard discharge control device that the embodiment of the present invention provides.Alternatively, this electrical equipment can be the intelligent terminal such as TV, refrigerator, mobile phone, air-conditioning etc., it is preferable that this electrical equipment is air-conditioning.
Obviously, those skilled in the art should be understood that, each module of the above-mentioned present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or it is distributed on the network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, can be stored in storage device is performed by calculation element, or they are fabricated to respectively each integrated circuit modules, or the multiple modules in them or step are fabricated to single integrated circuit module realize.So, the present invention is not restricted to the combination of any specific hardware and software.
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.All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (12)
1. a mainboard discharge control method, it is characterised in that including:
Obtain the voltage at electric capacity two ends on mainboard；
Voltage according to described electric capacity two ends judges whether described electric capacity meets discharging condition；
If it is determined that described electric capacity meets discharging condition, then the voltage according to described electric capacity two ends determines discharge resistance；And
Described electric capacity is discharged by the discharge resistance being determined by.
2. method according to claim 1, it is characterised in that the voltage at described electric capacity two ends is more big, it is determined that discharge resistance more big.
3. method according to claim 2, it is characterised in that determine that discharge resistance includes according to the voltage at described electric capacity two ends:
Judge that whether the voltage at described electric capacity two ends is be more than or equal to the first predeterminated voltage；
If the voltage at described electric capacity two ends is be more than or equal to described first predeterminated voltage, it is determined that described discharge resistance is the first resistance；
If the voltage at described electric capacity two ends is less than described first predeterminated voltage, it is judged that whether the voltage at described electric capacity two ends is be more than or equal to the second predeterminated voltage, wherein, described second predeterminated voltage is less than described first predeterminated voltage；
If the voltage at described electric capacity two ends is less than described first predeterminated voltage and be more than or equal to described second predeterminated voltage, it is determined that described discharge resistance is the first resistance and the parallel resistance of the second resistance.
4. method according to claim 3, it is characterised in that if the voltage at described electric capacity two ends is less than described second predeterminated voltage, described method also includes:
Judging that whether the voltage at described electric capacity two ends is be more than or equal to the 3rd predeterminated voltage, wherein, described 3rd predeterminated voltage is less than described second predeterminated voltage；
If the voltage at described electric capacity two ends is less than described second predeterminated voltage and be more than or equal to described 3rd predeterminated voltage, it is determined that described discharge resistance is the first resistance, the parallel resistance of the second resistance and the second resistance.
5. a mainboard discharge control device, it is characterised in that including:
Voltage collection circuit, for obtaining the voltage at electric capacity two ends on mainboard；
Host computer, is connected with described voltage collection circuit, for when determining that described electric capacity meets discharging condition, determining discharge resistance according to the voltage at described electric capacity two ends；And
Discharge circuit, is connected with described host computer, for the discharge resistance determined according to described host computer, described electric capacity is discharged.
6. device according to claim 5, it is characterised in that described discharge circuit includes:
Multiple resistance；
Multiple switches, are connected with the plurality of resistance respectively, for a resistance in the plurality of resistance accessing described discharge circuit or the multiple resistor coupled in parallel in the plurality of resistance being accessed described discharge circuit；
Single-chip microcomputer, is connected with described host computer, for receiving the control instruction of described host computer；
Driving chip, is connected with described single-chip microcomputer, for generating driving instruction according to described control instruction；And
Multiple relays, are connected with described driving chip, for controlling Guan Bi or the disconnection of multiple switch respectively according to described driving instruction.
7. device according to claim 6, it is characterised in that described discharge circuit also includes:
Multiple diodes, in parallel with the plurality of relay respectively；
Multiple electric capacity, in parallel with the plurality of relay respectively.
8. device according to claim 6, it is characterised in that
The plurality of relay includes: the first relay, is connected with described driving chip, for controlling Guan Bi or the disconnection of the first switch according to described driving instruction；
Second relay, is connected with described driving chip, for controlling Guan Bi or the disconnection of second switch according to described driving instruction,
The plurality of resistance includes: the first resistance, connects with described first switch, when described first switch Guan Bi, with the first resistance, described electric capacity is discharged；
Second resistance, connects with described second switch, when described second switch closes, with described first resistor coupled in parallel, described electric capacity is discharged.
9. device according to claim 8, it is characterised in that
The plurality of relay also includes: the 3rd relay, is connected with described driving chip, for controlling Guan Bi or the disconnection of the 3rd switch according to described driving instruction；
The plurality of resistance also includes: the 3rd resistance, is connected with described 3rd relay, and when described 3rd switch Guan Bi, with described first resistance, described electric capacity is discharged by described second resistor coupled in parallel.
10. device according to claim 5, it is characterised in that described voltage collection circuit includes:
Voltage sensor, is connected with electric capacity two ends on described mainboard, for gathering the voltage at electric capacity two ends on described mainboard；
Voltage acquisition chip, is connected with described voltage sensor and described host computer, for sending the voltage signal at described electric capacity two ends to described host computer.
11. an electrical equipment, it is characterised in that include the mainboard discharge control device according to any one of claim 5 to 10.
12. electrical equipment according to claim 11, it is characterised in that described electrical equipment is air-conditioning.
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| CN201610071092.1A CN105717835A (en) | 2016-02-01 | 2016-02-01 | Electric appliance and mainboard discharge control method and device |
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| CN201610071092.1A CN105717835A (en) | 2016-02-01 | 2016-02-01 | Electric appliance and mainboard discharge control method and device |
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| JP2010206909A (en) * | 2009-03-03 | 2010-09-16 | Hitachi Automotive Systems Ltd | Power conversion apparatus |
| CN102005753A (en) * | 2010-11-22 | 2011-04-06 | 中国石油大学(北京) | Peak overvoltage eliminator |
| CN102025357A (en) * | 2009-09-18 | 2011-04-20 | 富士迈半导体精密工业（上海）有限公司 | Discharge circuit |
| CN202333923U (en) * | 2011-12-13 | 2012-07-11 | 北京华电天仁电力控制技术有限公司 | Rapid discharge device for ultracapacitor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2010206909A (en) * | 2009-03-03 | 2010-09-16 | Hitachi Automotive Systems Ltd | Power conversion apparatus |
| CN102025357A (en) * | 2009-09-18 | 2011-04-20 | 富士迈半导体精密工业（上海）有限公司 | Discharge circuit |
| CN102005753A (en) * | 2010-11-22 | 2011-04-06 | 中国石油大学(北京) | Peak overvoltage eliminator |
| CN202333923U (en) * | 2011-12-13 | 2012-07-11 | 北京华电天仁电力控制技术有限公司 | Rapid discharge device for ultracapacitor |
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Application publication date: 20160629 |