CN204465001U - The system that a kind of constant-current supply is aging and detection system - Google Patents
The system that a kind of constant-current supply is aging and detection system Download PDFInfo
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- CN204465001U CN204465001U CN201520075663.XU CN201520075663U CN204465001U CN 204465001 U CN204465001 U CN 204465001U CN 201520075663 U CN201520075663 U CN 201520075663U CN 204465001 U CN204465001 U CN 204465001U
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Abstract
The system that constant-current supply is aging and a detection system, this system comprises: be somely aging power supply, and the input of this power supply connects electrical network; One DC-DC boosting unit, described some outputs being aging power supply are connected in parallel the input of this DC-DC boosting unit respectively after series diode; One DC-AC inverter, the input of this inverter connects the output of described DC-DC boosting unit, and the output of this inverter connects electrical network.Ageing system of the present utility model, adopt the output being aging power supply after diode, receive the mode of a total DC-DC boosting unit, because the power consumption of diode is little, in the process that small-power constant-current supply is aging, can saves energy significantly, thus reduce the use cost of the utility model ageing system.
Description
Technical field
The utility model relates to a kind of ageing system for aging constant-current supply, and the detection system of power source aging.
Background technology
Manufacturing the power supply manufacturing enterprise of the power supplys such as such as adapter, charger, Switching Power Supply, LED drive power, for choosing bad power supply, usually needing carry out aging to finished product power supply and detect.Traditional aging method utilizes high-power resistance as load, therefore there is the shortcoming that large, the aging cost of power consumption is high.
The patent No. is ZL200710099161.0, patent name is the patent of multiple input path modular high frequency isolation single phase power feedback type electronic load, disclose and be a kind ofly applicable to the aging method of constant-current supply, this aging method is aging power supply output is separately linked into a DC-DC high-frequency isolation module respectively by some, then the output-parallel of each DC-DC high-frequency isolation module is linked into a DC-AC inverter, finally by the output of this DC-AC inverter access electrical network, with this while aging power supply, recycling of electric energy can also be realized, reach saves energy, reduce the object of aging cost.But this aging method is when small-power constant-current supply this kind of for aging such as LED drive power, and little owing to being aging power supply own power, the energy-saving effect of this aging method is very not obvious, and aging cost does not effectively reduce.
Summary of the invention
First object of the present utility model is to provide and is a kind ofly especially applicable to the aging ageing system of small-power constant-current supply for constant-current supply, makes it have the feature that obvious, the aging cost of energy-saving effect is low.
Second object of the present utility model provides a kind of energy-conservation constant-current supply ageing management system further.
For achieving the above object, the utility model takes following technical scheme:
Implement a kind of method that constant-current supply is aging, the method comprises the following steps:
One, some inputs being aging power supply are connected electrical network;
Two, parallel connection after described some output being aging power supply respectively series diode is linked into a DC-DC boosting unit, the described low-voltage DC being aging power supply output is converted to high voltage direct current by this DC-DC boosting unit, and controls the size of the input voltage of this DC-DC boosting unit;
Three, the output of described DC-DC boosting unit is linked into a DC-AC inverter, the output of described DC-AC inverter is linked into electrical network; The high voltage direct current exported by the conversion of DC-DC boosting unit in step 2 is converted to alternating current and feeds back to electrical network by this DC-AC inverter, and controls the size feeding back to the electric current of electrical network.
In above-mentioned steps two, described diode connects in the mode of common anode pole or common cathode.
According to above-mentioned aging method, design the system that a kind of constant-current supply is aging, this system comprises:
Somely be aging power supply, the input of this power supply connects electrical network;
One DC-DC boosting unit, described some outputs being aging power supply are connected in parallel the input of this DC-DC boosting unit respectively after series diode;
One DC-AC inverter, the input of this inverter connects the output of described DC-DC boosting unit, and the output of this inverter connects electrical network.
Particularly, described some diodes being aging power output end and being connected in series respectively, for the connected mode of common anode pole or common cathode.
For choosing aging defective products, based on above-mentioned ageing system, provide the detection system that a kind of constant-current supply is aging, this system comprises above-mentioned ageing system and for detecting the detecting unit being respectively aging electric power output voltage value and/or current value.
Further, being respectively aging the qualification of the constant current output of power supply for detecting, in described ageing system, being somely aging between the output negative terminal of power supply and the input negative terminal of DC-DC boosting unit, being connected in series current sampling resistor respectively.
Ageing system of the present utility model, adopt the output being aging power supply after diode, receive the mode of a total DC-DC boosting unit, because the power consumption of diode is little, in the process that small-power constant-current supply is aging, can saves energy significantly, thus reduce the use cost of the utility model ageing system; Be aging the diode arranged in power supply shunt circuit separately, can also protect aging after the power supply that breaks down can not cause the further infringement of other parallel connection power supplies, thus avoid the extension of fault; In addition, because the constant-current supply be aging itself only controls its electric current exported, and do not control output voltage, its output voltage is determined by its load, so an available total DC-DC boosting unit controls the size of its input voltage, to make the constant-current supply of the applicable different capacity of ageing system of the present utility model, and remove to control without the need to multiple DC-DC high-frequency isolation module the output voltage that each is aging power supply respectively, like this, the construction cost of ageing system can significantly be reduced again.Therefore, ageing system of the present utility model, has good energy-conserving effect, feature that aging cost is low.
Ageing management system of the present utility model, designs further based on ageing system of the present utility model, therefore also has good energy-saving effect, and can independent detection each be aging output voltage, the electric current of power supply, to choose aging defective products.
Accompanying drawing explanation
Fig. 1 is the structural principle block diagram of the system that a kind of constant-current supply of the utility model is aging;
Fig. 2 is the another kind of structural principle block diagram of the system that a kind of constant-current supply of the utility model is aging;
Fig. 3 is the structural principle block diagram of the detection system that a kind of constant-current supply of the utility model is aging;
Fig. 4 is the another kind of structural principle block diagram of the detection system that a kind of constant-current supply of the utility model is aging;
Fig. 5 is the circuit diagram of DC-DC boosting unit in the utility model;
Fig. 6 is the circuit diagram of DC-AC inverter in the utility model;
Fig. 7 is the block diagram relating to DSP control method in the utility model.
In figure, each label respectively: (10) are aging power supply, (20) DC-DC boosting unit, (21) boost circuit, (22) full-bridge circuit, (30) DC-AC inverter, (40) detecting unit.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Referring to Fig. 1, the aging method that the system that a kind of constant-current supply of the utility model is aging is implemented, comprises the following steps:
One, the input three being aging power supply 10 connects electrical network;
Two, the output three being aging power supply 10 respectively after series diode D1, diode D2, diode D3 parallel connection be linked into a DC-DC boosting unit 20, this DC-DC boosting unit 20 is aging the DC bus-bar voltage Vbus that low-voltage DC that power supply 10 exports is converted to voltage 385 volts by three, and the size of the input voltage vin of control DC-DC boosting unit 20, with the constant-current supply making this aging method can be used for aging different capacity; And the power supply broken down after diode D1, diode D2, diode D3 protection can be utilized aging can not cause the further infringement of other parallel connection power supplies, thus avoid the extension of fault;
Three, the 385 volts of DC bus-bar voltage Vbus exported by DC-DC boosting unit 20 are linked into a DC-AC inverter 30, and the output of this DC-AC inverter 30 is linked into electrical network; The 385 volts of DC bus-bar voltage Vbus changing output by DC-DC boosting unit 20 in step 2 are converted to current waveform and electrical network and feed back to electrical network with the alternating current of homophase frequently by this DC-AC inverter 30, and control the size feeding back to the electric current of electrical network, ageing system input power and power output are balanced each other.
The system that a kind of constant-current supply of the utility model is aging, the first execution mode comprises:
Three are aging power supply 10, and its input connects electrical network;
The output that DC-DC boosting unit 20, three is aging power supply 10 is connected in parallel the input of this boosting unit 20 respectively after series diode D1, diode D2, diode D3; Diode D1, diode D2, diode D3 are the connected mode of common cathode;
A DC-AC inverter 30, the input of this inverter 30 connects the output of DC-DC boosting unit 20, and the output of this inverter 30 connects electrical network.
Referring to Fig. 2, the system that a kind of constant-current supply of the utility model is aging, the second execution mode is from the different of the first execution mode: diode D1, diode D2, diode D3, is the connected mode of common anode pole.
Referring to Fig. 3, the detection system that a kind of constant-current supply of the utility model is aging, first execution mode comprise above-mentioned first execution mode ageing system and for detecting the detecting unit 40 being respectively aging power supply 10 output voltage values, the bad power supply after being aging can be detected.
Referring to Fig. 4, the detection system that a kind of constant-current supply of the utility model is aging, second execution mode is on the basis of the first execution mode, be aging between the output negative terminal of power supply 10 and the input negative terminal of DC-DC boosting unit 20 at three, be connected in series current sampling resistor R1, current sampling resistor R2, current sampling resistor R3 respectively, magnitude of voltage and the current value that three are aging the respective output of power supply 10 is measured by detecting unit 40, whether normal to check three constant current values being aging power supply 10 output.
Referring to Fig. 5, in the utility model, DC-DC boosting unit 20 is made up of two power electronic translation circuits, and L1, Q1, D1, C1 form boost circuit 21, Q2, Q3, Q4, Q5, C2, T1, D2, D3, D4, D5, C3 form full-bridge circuit 22.Boost circuit 21 is converted to 75 volts of direct currents by being aging the low-voltage DC that power supply 10 exports, and drives the size of the input voltage vin of control DC-DC boosting unit 20 by the PWM of control Q1, namely controls the power output being aging power supply 10.75 volts of direct currents that boost circuit 21 exports by full-bridge circuit 22 are converted to 385 volts of direct current supply DC-AC inverters 30.
Referring to Fig. 6, in the utility model, DC-AC inverter 30 adopts full bridge inverter, Q5, Q6, Q7, Q8 alternate conduction, be alternating current by DC inverter, the drive singal of Q5, Q6, Q7, Q8 comes from DSP control circuit, the size of DSP control circuit detection of grid voltage, frequency and phase place and grid-connected current Ie, bus voltage value, produce SPWM (Sine Wave Pulse Width Modulation) drive singal according to these values, grid-connected current and line voltage are with frequency homophase to drive 4 IGBTQ5, Q6, Q7, Q8 to ensure.DSP control circuit is also responsible in addition and system host computer carries out communication with what obtain input voltage vin and arranges instruction.Inductance L 3 is used for the ripple current of filtering switching frequency, and K1 is used for inverter circuit and electrical network to separate, when line voltage or frequency abnormal time disconnect K1, to protect inverter 30 internal circuit.
When ageing system power is larger, DC-AC inverter 30 also can adopt three phase full bridge rectification/inverter circuit.
Referring to Fig. 7, the DSP control circuit related in the utility model, realizes the balance of system input power and feedback grid power by control ring.Control ring comprises an outer shroud and an inner ring.
Outer shroud is 385 volts of busbar voltage rings, ensures that system input power and power output match by keeping the stable of busbar voltage.The difference of busbar voltage actual value and value of feedback obtains the given of grid-connected current amplitude after pi regulator.When input power specific power output is large, then busbar voltage can increase, and at this moment, increase grid-connected current, then busbar voltage can reduce.Equally, when input power specific power output is little, then busbar voltage can reduce, and at this moment, reduce grid-connected current, then busbar voltage can raise.After busbar voltage is stable, system input power is and power output has matched.
Inner ring is grid-connected current ring, this environmental protection card grid-connected current and line voltage are with frequency homophase, the grid-connected current amplitude signal that busbar voltage ring exports is multiplied with the sinusoidal signal that civil power phase-locked loop exports, namely obtain the instantaneous set-point of grid-connected current, the drive singal that the difference of this value and grid-connected current actual value obtains adjustable pulse width after adjuster removes driving 4 IGBTQ5, Q6, Q7, Q8.
Claims (4)
1. the system that constant-current supply is aging, is characterized in that: comprising:
Somely be aging power supply (10), the input of this power supply (10) connects electrical network;
One DC-DC boosting unit (20), described some outputs being aging power supply (10) are connected in parallel the input of this DC-DC boosting unit (20) respectively after series diode;
One DC-AC inverter (30), the input of this inverter (30) connects the output of described DC-DC boosting unit (20), and the output of this inverter (30) connects electrical network.
2. the system that constant-current supply according to claim 1 is aging, is characterized in that: described some diodes being aging power supply (10) output and being connected in series respectively, is the connected mode of common anode pole or common cathode.
3. the detection system that constant-current supply is aging, is characterized in that: comprise the aging system of constant-current supply according to claim 1 and be respectively aging the detecting unit (40) of power supply (10) output voltage values and/or current value for detecting.
4. the detection system that constant-current supply according to claim 3 is aging, it is characterized in that: in the system that constant-current supply according to claim 1 is aging, somely to be aging between the output negative terminal of power supply (10) and the input negative terminal of DC-DC boosting unit (20), to be connected in series current sampling resistor respectively.
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| CN201520075663.XU CN204465001U (en) | 2015-02-03 | 2015-02-03 | The system that a kind of constant-current supply is aging and detection system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106093803A (en) * | 2016-06-07 | 2016-11-09 | 东莞市冠佳电子设备有限公司 | Switch power supply aging test circuit |
| CN110907846A (en) * | 2018-08-28 | 2020-03-24 | 比亚迪股份有限公司 | Test system and test method of DC/DC conversion module |
-
2015
- 2015-02-03 CN CN201520075663.XU patent/CN204465001U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106093803A (en) * | 2016-06-07 | 2016-11-09 | 东莞市冠佳电子设备有限公司 | Switch power supply aging test circuit |
| CN106093803B (en) * | 2016-06-07 | 2019-06-11 | 东莞市冠佳电子设备有限公司 | Switch power supply aging tests circuit |
| CN110907846A (en) * | 2018-08-28 | 2020-03-24 | 比亚迪股份有限公司 | Test system and test method of DC/DC conversion module |
| CN110907846B (en) * | 2018-08-28 | 2021-12-07 | 比亚迪股份有限公司 | Test system and test method of DC/DC conversion module |
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