CN203800654U - Three-phase electric charging circuit and air conditioner - Google Patents
Three-phase electric charging circuit and air conditioner Download PDFInfo
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- CN203800654U CN203800654U CN201420114277.2U CN201420114277U CN203800654U CN 203800654 U CN203800654 U CN 203800654U CN 201420114277 U CN201420114277 U CN 201420114277U CN 203800654 U CN203800654 U CN 203800654U
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- 239000003990 capacitor Substances 0.000 claims abstract description 74
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- 230000008878 coupling Effects 0.000 claims description 10
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- 238000004378 air conditioning Methods 0.000 description 8
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- 238000010438 heat treatment Methods 0.000 description 4
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- 238000005868 electrolysis reaction Methods 0.000 description 2
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Abstract
The utility model discloses a three-phase electricity charging circuit and air conditioner. Wherein, this three-phase electricity charging circuit includes: a relay circuit for inputting a first voltage of the rectifier bridge; electrolytic capacitor voltage-sharing circuit is connected with relay circuit for the energy of storage first voltage, electrolytic capacitor voltage-sharing circuit includes: the electrolytic capacitor circuit comprises a first capacitor and a second capacitor; the control circuit is connected with the electrolytic capacitor circuit and used for controlling the voltage division circuit to divide the voltage of the first capacitor and the second capacitor according to the proportional relation between the second voltage and the first voltage of the second capacitor. Adopt the utility model discloses to solved among the prior art air conditioner three-phase electricity charging circuit's the inside temperature of electrical apparatus box high, the big problem of loss, realized the electrolytic capacitor voltage-sharing through low loss and the little mode that generates heat.
Description
Technical field
The utility model relates to air-conditioning charging field, in particular to a kind of three-phase electricity charging circuit and air conditioner.
Background technology
The structure of the three-phase electricity charging circuit in business air conditioner is substantially as Fig. 1 at present: available circuit is made up of two parts, the relay circuit being formed by relay K 2 and resistance R 15, its repeat circuit 1,2 pins are control end, 3,4 pins be can attraction circuit pin, P+ is the negative pole that front end rectifier bridge output cathode, P-are rectifier bridge, and R15 is the current-limiting resistance in moment of powering on; C3 and C4 form electrochemical capacitor series circuit, because electrochemical capacitor technological problems cannot be accomplished high pressure, therefore all use electrolysis capacitances in series to make for improving withstand voltage in three-phase circuit, resistance R 16 and R17 are respectively the grading resistor of C3, C4, because electrochemical capacitor individual difference is larger, series connection must be used while use all presses measure (resistance R 16 and R17) to ensure that two voltages on electric capacity equate.
In such scheme, there is following several defect:
1. the withstand voltage between relay contact is limited, general mark exchanges 250V, use voltage more the high life shorter, but in the system of three-phase electricity power supply, the withstand voltage of 3,4 needs in moment contact of powering on is 540V, although power at every turn the moment all very short, the long-term useful life that uses the words of relay can reduce relay.
2. because electrochemical capacitor individual difference is larger, when being used, series connection to use grading resistor, and grading resistor value is generally tens K Europe, the words that value is too large do not have all presses effect, and this grading resistor is to be connected between the withstand voltage of 540V, the power loss of grading resistor probably has several W to 10W left and right like this, and these power consumptions produce very high temperature rise, in the business air conditioner of three phase supply, this is a main pyrotoxin, causes electrical appliance kit internal temperature rise higher.
Electrical appliance kit internal temperature for air-conditioning three-phase electricity charging circuit in prior art is high, and the problem that loss is large not yet proposes effective solution at present.
Utility model content
Electrical appliance kit internal temperature for air-conditioning three-phase electricity charging circuit in correlation technique is high, the problem that loss is large, not yet proposes effective solution, for this reason at present, main purpose of the present utility model is to provide a kind of three-phase electricity charging circuit and air conditioner, to address the above problem.
To achieve these goals, according to an aspect of the present utility model, provide a kind of three-phase electricity charging circuit, this three-phase electricity charging circuit comprises: relay circuit, for the first voltage of input rectifying bridge; Electrochemical capacitor equalizer circuit, is connected with relay circuit, and for storing the energy of the first voltage, electrochemical capacitor equalizer circuit comprises: electrochemical capacitor circuit and control circuit, and wherein, electrochemical capacitor circuit comprises the first electric capacity and the second electric capacity; Control circuit is connected with electrochemical capacitor circuit, for being the first electric capacity and the second capacitance partial pressure according to the proportionate relationship control bleeder circuit of the second voltage of the second electric capacity and the first voltage.
Further, control circuit comprises: sample circuit, comparison circuit and switching circuit, and sample circuit, is connected with electrochemical capacitor circuit, for gathering the first voltage and second voltage; Comparison circuit, is connected with sample circuit, generates the first control signal for being greater than at second voltage the half of the first voltage, generates the second control signal at second voltage the half that is less than the first voltage; Switching circuit, is the second capacitance partial pressure for control bleeder circuit in the situation that receiving the first control signal, and in the situation that receiving the second control signal, controlling bleeder circuit is the first capacitance partial pressure.
Further, electrochemical capacitor equalizer circuit also comprises: optical coupling isolation circuit, be connected with switching circuit circuit, and optical coupling isolation circuit comprises: the first optocoupler and the second optocoupler; Bleeder circuit comprises: first all presses branch road and second all to press branch road, and the first optocoupler and first all presses branch road to be connected, first control signal control the first optocoupler conducting, and first all presses branch road and the access of the second Capacitance parallel connection; Second control signal control the second optocoupler conducting, second all presses branch road and the access of the first Capacitance parallel connection.
Further, relay circuit comprises: relay, the first resistance and the second resistance, relay comprises first pair of normally-closed contact, second pair of normally-closed contact, first pair of normally opened contact, second pair of normally opened contact, first pair of normally opened contact comprises: the first contact and the second contact, first pair of normally-closed contact comprises the second contact and the 3rd contact, second pair of normally opened contact comprises: the 4th contact and the 5th contact, and second pair of normally-closed contact comprises the 5th contact and the 6th contact; Wherein, the second contact is connected with the positive pole of rectifier bridge, the second contact is connected with the 3rd contact, the 3rd contact is connected with the first end of the first resistance, and the second end of the first resistance is connected with the first end of the second resistance, and the second end of the second resistance is connected with the 6th contact, the 6th contact is connected with the 5th contact, the 5th contact is as the output of relay circuit, and the 5th contact is connected with electrochemical capacitor circuit, and the first contact is connected with the second end of the first resistance with the 4th contact.
Further, sample circuit comprises: the first sampling electronic circuit and the second sampling electronic circuit; The first sampling electronic circuit comprises: the 3rd resistance, the 4th resistance and the 5th resistance, the first end of the 3rd resistance is connected with the first end of the first electric capacity, the first end of the 4th resistance is connected with the second end of the 3rd resistance, the first end of the 5th resistance is connected with the second end of the 4th resistance, and the second end of the 5th resistance is connected with the second end of the second electric capacity; The second sampling electronic circuit comprises: the 6th resistance, the 7th resistance and the 8th resistance, the first end of the 6th resistance is connected with the first end of the second electric capacity, the first end of the 7th resistance is connected with the second end of the 6th resistance, the first end of the 8th resistance is connected with the second end of the 7th resistance, the second end of the 8th resistance is connected with the second end of the second electric capacity, the second end ground connection of the second electric capacity.
Further, comparison circuit comprises: operational amplifier and the 9th resistance, the first input end of operational amplifier is connected with the second end of the 7th resistance, the second input of operational amplifier is connected with the second end of the 4th resistance, the power end of operational amplifier is connected with the first power supply, and power end is connected with the first end of the 9th resistance, the output of operational amplifier is connected with the second end of the 9th resistance, the output of operational amplifier is connected with switching circuit, wherein, the first control signal is high level signal, and the second control signal is low level signal.
Further, switching circuit comprises: the first triode and the second triode, the conducting under high level signal control of the first triode, the conducting under low level signal control of the second triode, wherein, the base stage of the first triode is connected with the output of operational amplifier, the grounded emitter of the first triode, and the collector electrode of the first triode is connected with the first optocoupler; The base stage of the second triode is connected with the output of operational amplifier, the grounded collector of the second triode, and the emitter of the second triode is connected with the second optocoupler.
Further, optical coupling isolation circuit also comprises: the tenth resistance, and wherein, the first end of the tenth resistance is connected with second source; The first input end of the first optocoupler is connected with the second end of the tenth resistance, the second input of the first optocoupler is connected with the collector electrode of the first triode, the first output of the first optocoupler and first all presses branch road to be connected, and the second output of the first optocoupler is connected with the second end of the second electric capacity; The first input end of the second optocoupler is connected with the second end of the tenth resistance, the second input of the second optocoupler is connected with the emitter of the second triode, the first output of the second optocoupler and second all presses branch road to be connected, and the second output of the second optocoupler is connected with the second end of the first electric capacity.
Further, first all presses branch road to comprise: the 11 resistance and the 12 resistance, the first end of the 11 resistance is connected with the first output of the first optocoupler, the second end of the 11 resistance is connected with the first end of the 12 resistance, and the second end of the 12 resistance is connected with the first end of the second electric capacity; Second all presses branch road to comprise: the 13 resistance and the 14 resistance, the first end of the 13 resistance is connected with the first output of the second optocoupler, the second end of the 13 resistance is connected with the first end of the 14 resistance, and the second end of the 14 resistance is connected with the first end of the first electric capacity.
To achieve these goals, according to another aspect of the present utility model, also provide a kind of air conditioner, comprised three-phase electricity charging circuit.
Adopt the utility model, by control circuit according to the second voltage of the first electric capacity with from the relation of the first voltage of rectifier bridge, control all pressure of bleeder circuit to electrochemical capacitor, loss and temperature rise are significantly reduced with respect to pure resistance equalizer circuit in prior art, thereby it is high to have solved in prior art the electrical appliance kit internal temperature of air-conditioning three-phase electricity charging circuit, the problem that loss is large, realizes electrochemical capacitor by low-loss and the little mode of heating and all presses.
Brief description of the drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, forms the application's a part, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of air-conditioning three-phase electricity charging circuit in prior art;
Fig. 2 is according to the structural representation of the three-phase electricity charging circuit of the utility model embodiment; And
Fig. 3 is according to the structural representation of a kind of optional three-phase electricity charging circuit of the utility model embodiment.
Embodiment
In order to make those skilled in the art person understand better the utility model scheme, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the embodiment of the utility model part, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all should belong to the scope of the utility model protection.
It should be noted that, term " first ", " second " etc. in specification of the present utility model and claims and above-mentioned accompanying drawing are for distinguishing similar object, and needn't be used for describing specific order or precedence.The data that should be appreciated that such use suitably can exchanged in situation, so as embodiment of the present utility model described herein can with except diagram here or describe those order enforcement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, for example, those steps or unit that process, method, system, product or the equipment that has comprised series of steps or unit is not necessarily limited to clearly list, but can comprise clearly do not list or for these processes, method, product or equipment intrinsic other step or unit.
Fig. 2 is according to the structural representation of the three-phase electricity charging circuit of the utility model embodiment.As shown in Figure 2, this circuit can comprise: relay circuit 10, for the first voltage of input rectifying bridge; Electrochemical capacitor equalizer circuit 20, is connected with relay circuit 10, and for storing the energy of the first voltage, electrochemical capacitor equalizer circuit comprises: electrochemical capacitor circuit 21 and control circuit 23, and wherein, electrochemical capacitor circuit comprises the first capacitor C 1 and the second capacitor C 2; Control circuit is connected with electrochemical capacitor circuit, for being the first electric capacity and the second capacitance partial pressure according to the proportionate relationship control bleeder circuit of the second voltage of the second electric capacity and the first voltage.
Adopt the utility model, by control circuit according to the second voltage of the first electric capacity with from the relation of the first voltage of rectifier bridge, control all pressure of bleeder circuit to electrochemical capacitor, loss and temperature rise are significantly reduced with respect to pure resistance equalizer circuit in prior art, thereby it is high to have solved in prior art the electrical appliance kit internal temperature of air-conditioning three-phase electricity charging circuit, the problem that loss is large, realizes electrochemical capacitor by low-loss and the little mode of heating and all presses.
Above-described embodiment of the present utility model can be applied in the three-phase electricity charging of commercial use air conditioner.Wherein, the first above-mentioned electric capacity and the second electric capacity can be all electrochemical capacitor.
In above-described embodiment of the present utility model, control circuit 23 can comprise: sample circuit, comparison circuit and switching circuit, and sample circuit, is connected with electrochemical capacitor circuit, for gathering the first voltage and second voltage; Comparison circuit, is connected with sample circuit, generates the first control signal for being greater than at second voltage the half of the first voltage, generates the second control signal at second voltage the half that is less than the first voltage; Switching circuit, is the second capacitance partial pressure for control bleeder circuit in the situation that receiving the first control signal, and in the situation that receiving the second control signal, controlling bleeder circuit is the first capacitance partial pressure.
In above-described embodiment, the bleeder circuit of electrochemical capacitor is realized all and being pressed by a kind of mode that detects voltage, control bleeder circuit by relatively the first voltage and second voltage, and relatively original pure resistance equalizer circuit had significantly reduced loss and temperature rise.
Need to illustrate further, electrochemical capacitor equalizer circuit can also comprise: optical coupling isolation circuit, be connected with switching circuit circuit, and optical coupling isolation circuit comprises as shown in Figure 3: the first optocoupler U1 and the second optocoupler U2; Bleeder circuit comprises: first all presses branch road and second all to press branch road, and the first optocoupler and first all presses branch road to be connected, first control signal control the first optocoupler conducting, and first all presses branch road and the access of the second Capacitance parallel connection; Second control signal control the second optocoupler conducting, second all presses branch road and the access of the first Capacitance parallel connection.
By optical coupling isolation circuit, the parallel resistance of electrochemical capacitor is switched, can isolate control circuit and electrochemical capacitor, thereby effectively prevent the impact of the change in voltage on electrochemical capacitor on control circuit, thereby made the more stable work of three-phase electricity charging circuit in the utility model above-described embodiment.
According to above-described embodiment of the present utility model, relay circuit comprises: relay K 1, the first resistance R 1 and the second resistance R 2, relay comprises first pair of normally-closed contact, second pair of normally-closed contact, first pair of normally opened contact, second pair of normally opened contact, first pair of normally opened contact comprises: the first contact A and the second contact B, first pair of normally-closed contact comprises the second contact B and the 3rd contact C, second pair of normally opened contact comprises: the 4th contact D and the 5th contact E, and second pair of normally-closed contact comprises the 5th contact E and the 6th contact F; Wherein, the second contact is connected with the positive pole of rectifier bridge, the second contact is connected with the 3rd contact, the 3rd contact is connected with the first end of the first resistance, and the second end of the first resistance is connected with the first end of the second resistance, and the second end of the second resistance is connected with the 6th contact, the 6th contact is connected with the 5th contact, the 5th contact is as the output of relay circuit, and the 5th contact is connected with electrochemical capacitor circuit, and the first contact is connected with the second end of the first resistance with the 4th contact.
Particularly, the B/C of relay K 1 as shown in Figure 3, E/F contact is normally-closed contact, B/A, E/D contact is normally opened contact, G/H contact is control end, the moment control end that powers on does not move, current charges circuit is that B-C-the first resistance R 1-the 2nd R2-contact F-E in contact arrives electrochemical capacitor C1 and C2 below again, by the contact A arriving useless now, D receives the mid point of charging resistor R1 and R2, powered on moment contact B like this, C is idiostatic, for busbar voltage (being the first voltage P+ in above-described embodiment), contact E, F is idiostatic is 0, contact A, the current potential of D is the half of busbar voltage (being the first voltage P+ in above-described embodiment), after control end effect, D/E contact, contact and the adhesive of A/B contact of relay, at this moment all contact voltages are all idiostatic, relay voltage between any pair of contact in the time powering on the moment and normally work is all no more than P+/2 like this, thereby improve the reliability of relay work.Alternatively, the relay K 1 in above-described embodiment also can connect to replace with two relays.
More specifically, the first resistance in above-described embodiment and the second resistance are current-limiting resistance, can prevent powered on moment rush of current, by the connection of relay contact and current-limiting resistance, reduce relay voltage between the contact in moment that powers on, improve the useful life of relay.
As shown in Figure 3, the sample circuit in the utility model above-described embodiment comprises: the first sampling electronic circuit and the second sampling electronic circuit; The first sampling electronic circuit comprises: the 3rd resistance R 3, the 4th resistance R 4 and the 5th resistance R 5, the first end of the 3rd resistance is connected with the first end of the first electric capacity, the first end of the 4th resistance is connected with the second end of the 3rd resistance, the first end of the 5th resistance is connected with the second end of the 4th resistance, and the second end of the 5th resistance is connected with the second end of the second electric capacity; The second sampling electronic circuit comprises: the 6th resistance R 6, the 7th resistance R 7 and the 8th resistance R 8, the first end of the 6th resistance is connected with the first end of the second electric capacity, the first end of the 7th resistance is connected with the second end of the 6th resistance, the first end of the 8th resistance is connected with the second end of the 7th resistance, the second end of the 8th resistance is connected with the second end of the second electric capacity, the second end ground connection of the second electric capacity.
Particularly, comparison circuit comprises: operational amplifier U3 and the 9th resistance R 9, the first input end of operational amplifier is connected with the second end of the 7th resistance, the second input of operational amplifier is connected with the second end of the 4th resistance, the power end of operational amplifier is connected with the first power supply Y1, and power end is connected with the first end of the 9th resistance, the output of operational amplifier is connected with the second end of the 9th resistance, the output of operational amplifier is connected with switching circuit, wherein, the first control signal is high level signal, and the second control signal is low level signal.
It should be noted that, switching circuit comprises: the first triode Q1 and the second triode Q2, the conducting under high level signal control of the first triode, the conducting under low level signal control of the second triode, wherein, the base stage of the first triode is connected with the output of operational amplifier, the grounded emitter of the first triode, and the collector electrode of the first triode is connected with the first optocoupler; The base stage of the second triode is connected with the output of operational amplifier, the grounded collector of the second triode, and the emitter of the second triode is connected with the second optocoupler.
According to above-described embodiment of the present utility model, optical coupling isolation circuit also comprises: the tenth resistance R 10, and wherein, the first end of the tenth resistance is connected with second source Y2; The first input end of the first optocoupler is connected with the second end of the tenth resistance, the second input of the first optocoupler is connected with the collector electrode of the first triode, the first output of the first optocoupler and first all presses branch road to be connected, and the second output of the first optocoupler is connected with the second end of the second electric capacity; The first input end of the second optocoupler is connected with the second end of the tenth resistance, the second input of the second optocoupler is connected with the emitter of the second triode, the first output of the second optocoupler and second all presses branch road to be connected, and the second output of the second optocoupler is connected with the second end of the first electric capacity.
Further, first all presses branch road to comprise: the 11 resistance R the 11 and the 12 resistance R 12, the first end of the 11 resistance is connected with the first output of the first optocoupler, the second end of the 11 resistance is connected with the first end of the 12 resistance, and the second end of the 12 resistance is connected with the first end of the second electric capacity; Second all presses branch road to comprise: the 13 resistance R the 13 and the 14 resistance R 14, the first end of the 13 resistance is connected with the first output of the second optocoupler, the second end of the 13 resistance is connected with the first end of the 14 resistance, and the second end of the 14 resistance is connected with the first end of the first electric capacity.
Resistance in two-way sampling electronic circuit in above-described embodiment and the resistance value of two-way and Capacitance parallel connection can be larger, to reduce power consumption.By the voltage on two series connection electrolysis electric capacity of resistance detection, comparison value is realized voltage-sharing in electrochemical capacitor series connection use by controlling the switch of optical coupler after sending into comparator, and relatively original pure resistance equalizer circuit had significantly reduced loss and temperature rise.
Particularly, rectifier bridge as shown in Figure 3 has three inputs (L1, L2 and L3), electrochemical capacitor C1 and C2 series connection can be motor, compressor or the power model energy storage of load, the first capacitor C 1 and the second capacitor C 2 are withstand voltage can be all 450V, in three-phase electricity charging circuit, series connection is used the first electric capacity and the second electric capacity, and the withstand voltage of electrochemical capacitor equalizer circuit can be brought up to 900V.The 3rd resistance R 3, the 4th resistance R 4 and the 5th resistance R 5 are i.e. the first voltage of busbar voltage P+() the sampling resistor of the first sampling electronic circuit, the 6th resistance R 6, the 7th resistance R 7 and the 8th resistance R 8 are the detection resistance of the second sampling electronic circuit of second voltage in the first capacitor C 2, be used for detecting the second voltage VC2 in the second capacitor C 2, design to reach following function by two groups of sampling resistor values: when the second voltage of the second capacitor C 2 equals a half of the first voltage P+, be the tertiary voltage of VC2=P+/2=VC1(the first electric capacity), the sampled value of two groups of sample circuits equates, can establish sampled value as normal work is 2V, deliver to operational amplifier (being comparator U3), the pull-up resistor that the 9th resistance R 9 is comparator.
In above-described embodiment of the present utility model, if the second voltage height in the second capacitor C 2, be VC2>P+/2, triode side conducting-the 11 resistance R the 11 and the 12 resistance R 12 and the access in parallel of the second capacitor C 2 of LED side conducting (current-limiting resistance that wherein the tenth resistance R 10 is 3.3V) the-first optocoupler U1 of output high level-the first triode Q1 conducting-the first optocoupler U1 after comparator sampling, now two triode Q2 and the second optocoupler U2 are in off state, and the first capacitor C 1 does not have parallel resistance, the second capacitor C 2 parallel connections second are all pressed after branch road, the dividing potential drop that the second capacitor C 2 dividing potential drops reduce the first capacitor C 1 increases, voltage distribution tends to balance, otherwise be the second triode Q2 and the second optocoupler U2 conducting, the first capacitor C 1 parallel connection first all presses branch road (the 13 resistance R the 13 and the 14 resistance R 14) to reduce the voltage of the first capacitor C 1.
The first optocoupler in the utility model above-described embodiment and the second optocoupler can be selected optocoupler that can be high voltage withstanding, and two-way sampling electronic circuit and two-way all press the value of the resistance of branch road can be larger, to reduce power consumption.In above-described embodiment, the equalizer circuit of electrochemical capacitor is detected, realized all and being pressed by the mode of relatively control ' switch ' with a kind of, the switching that employing electronic device carries out parallel resistance is (as controlled with switching device, as slow in reaction speeds such as relays, switching frequency is low cannot be switched in time, reduce and all pressed precision), here adopt optocoupler to switch the parallel resistance of electrochemical capacitor, and can make control circuit and electrochemical capacitor isolate, can effectively prevent the impact of the change in voltage on electric capacity on control circuit.
To achieve these goals, according to another aspect of the present utility model, also provide a kind of air conditioner, this air conditioner can comprise any one three-phase electricity charging circuit in above-described embodiment.
Adopt the utility model, three-phase electricity charging circuit by control circuit according to the second voltage of the first electric capacity with from the relation of the first voltage of rectifier bridge, control all pressure of bleeder circuit to electrochemical capacitor, loss and temperature rise are significantly reduced with respect to pure resistance equalizer circuit in prior art, thereby it is high to have solved in prior art the electrical appliance kit internal temperature of air-conditioning three-phase electricity charging circuit, the problem that loss is large, realizes electrochemical capacitor by low-loss and the little mode of heating and all presses.
As can be seen from the above description, the utility model has been realized following technique effect:
Adopt the utility model, by control circuit according to the second voltage of the first electric capacity with from the relation of the first voltage of rectifier bridge, control all pressure of bleeder circuit to electrochemical capacitor, loss and temperature rise are significantly reduced with respect to pure resistance equalizer circuit in prior art, thereby it is high to have solved in prior art the electrical appliance kit internal temperature of air-conditioning three-phase electricity charging circuit, the problem that loss is large, realizes electrochemical capacitor by low-loss and the little mode of heating and all presses.Adopt above-described embodiment of the present utility model, with respect to traditional business air conditioner three-phase electricity charging circuit, the power of the nearly 10W that electrochemical capacitor grading resistor can be produced is reduced to below 1W, raise the efficiency and reduce temperature rise, can reduce the instantaneous voltage between relay contact, improve the useful life of relay.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (10)
1. a three-phase electricity charging circuit, is characterized in that, comprising:
Relay circuit, for the first voltage of input rectifying bridge;
Electrochemical capacitor equalizer circuit, is connected with described relay circuit, and for storing the energy of described the first voltage, described electrochemical capacitor equalizer circuit comprises: electrochemical capacitor circuit and control circuit, wherein,
Described electrochemical capacitor circuit comprises the first electric capacity and the second electric capacity;
Described control circuit is connected with described electrochemical capacitor circuit, for being described the first electric capacity and described the second capacitance partial pressure according to the proportionate relationship control bleeder circuit of the second voltage of described the second electric capacity and described the first voltage.
2. three-phase electricity charging circuit according to claim 1, is characterized in that,
Described control circuit comprises: sample circuit, comparison circuit and switching circuit,
Described sample circuit, is connected with described electrochemical capacitor circuit, for gathering described the first voltage and described second voltage;
Described comparison circuit, is connected with described sample circuit, for generating the first control signal the half that is greater than described the first voltage at described second voltage, generates the second control signal at described second voltage the half that is less than described the first voltage;
Described switching circuit, is described the second capacitance partial pressure for control described bleeder circuit in the situation that receiving described the first control signal, and in the situation that receiving described the second control signal, controlling described bleeder circuit is described the first capacitance partial pressure.
3. three-phase electricity charging circuit according to claim 2, is characterized in that,
Described electrochemical capacitor equalizer circuit also comprises: optical coupling isolation circuit, be connected with described switching circuit circuit, and described optical coupling isolation circuit comprises: the first optocoupler and the second optocoupler;
Described bleeder circuit comprises: first all presses branch road and second all to press branch road, and described the first optocoupler and described first all presses branch road to be connected, the first optocoupler conducting described in described the first control signal control, and described first all presses branch road and described the second Capacitance parallel connection access; The second optocoupler conducting described in described the second control signal control, described second all presses branch road and described the first Capacitance parallel connection access.
4. three-phase electricity charging circuit according to claim 2, is characterized in that,
Described relay circuit comprises: relay, the first resistance and the second resistance,
Described relay comprises first pair of normally-closed contact, second pair of normally-closed contact, first pair of normally opened contact, second pair of normally opened contact, described first pair of normally opened contact comprises: the first contact and the second contact, described first pair of normally-closed contact comprises described the second contact and the 3rd contact, described second pair of normally opened contact comprises: the 4th contact and the 5th contact, and described second pair of normally-closed contact comprises described the 5th contact and the 6th contact;
Wherein, described the second contact is connected with the positive pole of described rectifier bridge, described the second contact is connected with described the 3rd contact, described the 3rd contact is connected with the first end of described the first resistance, the second end of described the first resistance is connected with the first end of described the second resistance, the second end of described the second resistance is connected with described the 6th contact, described the 6th contact is connected with described the 5th contact, described the 5th contact is as the output of described relay circuit, described the 5th contact is connected with described electrochemical capacitor circuit, described the first contact is connected with the second end of described the first resistance with described the 4th contact.
5. three-phase electricity charging circuit according to claim 3, is characterized in that,
Described sample circuit comprises: the first sampling electronic circuit and the second sampling electronic circuit;
Described the first sampling electronic circuit comprises: the 3rd resistance, the 4th resistance and the 5th resistance, the first end of described the 3rd resistance is connected with the first end of described the first electric capacity, the first end of described the 4th resistance is connected with the second end of described the 3rd resistance, the first end of described the 5th resistance is connected with the second end of described the 4th resistance, and the second end of described the 5th resistance is connected with the second end of described the second electric capacity;
Described the second sampling electronic circuit comprises: the 6th resistance, the 7th resistance and the 8th resistance, the first end of described the 6th resistance is connected with the first end of described the second electric capacity, the first end of described the 7th resistance is connected with the second end of described the 6th resistance, the first end of described the 8th resistance is connected with the second end of described the 7th resistance, the second end of described the 8th resistance is connected with the second end of described the second electric capacity, the second end ground connection of described the second electric capacity.
6. three-phase electricity charging circuit according to claim 5, is characterized in that,
Described comparison circuit comprises: operational amplifier and the 9th resistance, the first input end of described operational amplifier is connected with the second end of described the 7th resistance, the second input of described operational amplifier is connected with the second end of described the 4th resistance, the power end of described operational amplifier is connected with the first power supply, and described power end is connected with the first end of described the 9th resistance, the output of described operational amplifier is connected with the second end of described the 9th resistance, the output of described operational amplifier is connected with described switching circuit
Wherein, described the first control signal is high level signal, and described the second control signal is low level signal.
7. three-phase electricity charging circuit according to claim 6, is characterized in that,
Described switching circuit comprises: the first triode and the second triode, and the conducting under described high level signal control of described the first triode, the conducting under described low level signal control of described the second triode,
Wherein, the base stage of described the first triode is connected with the output of described operational amplifier, the grounded emitter of described the first triode, and the collector electrode of described the first triode is connected with described the first optocoupler; The base stage of described the second triode is connected with the output of described operational amplifier, the grounded collector of described the second triode, and the emitter of described the second triode is connected with described the second optocoupler.
8. three-phase electricity charging circuit according to claim 7, is characterized in that, described optical coupling isolation circuit also comprises: the tenth resistance, wherein,
The first end of described the tenth resistance is connected with second source;
The first input end of described the first optocoupler is connected with the second end of described the tenth resistance, the second input of described the first optocoupler is connected with the collector electrode of described the first triode, the first output of described the first optocoupler and described first all presses branch road to be connected, and the second output of described the first optocoupler is connected with the second end of described the second electric capacity;
The first input end of described the second optocoupler is connected with the second end of described the tenth resistance, the second input of described the second optocoupler is connected with the emitter of described the second triode, the first output of described the second optocoupler and described second all presses branch road to be connected, and the second output of described the second optocoupler is connected with the second end of described the first electric capacity.
9. three-phase electricity charging circuit according to claim 3, is characterized in that,
Described first all presses branch road to comprise: the 11 resistance and the 12 resistance, the first end of described the 11 resistance is connected with the first output of described the first optocoupler, the second end of described the 11 resistance is connected with the first end of described the 12 resistance, and the second end of described the 12 resistance is connected with the first end of described the second electric capacity;
Described second all presses branch road to comprise: the 13 resistance and the 14 resistance, the first end of described the 13 resistance is connected with the first output of described the second optocoupler, the second end of described the 13 resistance is connected with the first end of described the 14 resistance, and the second end of described the 14 resistance is connected with the first end of described the first electric capacity.
10. an air conditioner, comprises the three-phase electricity charging circuit described in any one in claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420114277.2U CN203800654U (en) | 2014-03-13 | 2014-03-13 | Three-phase electric charging circuit and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420114277.2U CN203800654U (en) | 2014-03-13 | 2014-03-13 | Three-phase electric charging circuit and air conditioner |
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| Publication Number | Publication Date |
|---|---|
| CN203800654U true CN203800654U (en) | 2014-08-27 |
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| CN201420114277.2U Expired - Lifetime CN203800654U (en) | 2014-03-13 | 2014-03-13 | Three-phase electric charging circuit and air conditioner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104917217A (en) * | 2014-03-13 | 2015-09-16 | 珠海格力电器股份有限公司 | Three-phase electric charging circuit and air conditioner |
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2014
- 2014-03-13 CN CN201420114277.2U patent/CN203800654U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104917217A (en) * | 2014-03-13 | 2015-09-16 | 珠海格力电器股份有限公司 | Three-phase electric charging circuit and air conditioner |
| CN104917217B (en) * | 2014-03-13 | 2018-06-26 | 珠海格力电器股份有限公司 | Three-phase electric charging circuit and air conditioner |
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