CN104777435A - Charging and discharging testing device of mobile power supply - Google Patents
Charging and discharging testing device of mobile power supply Download PDFInfo
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- CN104777435A CN104777435A CN201510083726.0A CN201510083726A CN104777435A CN 104777435 A CN104777435 A CN 104777435A CN 201510083726 A CN201510083726 A CN 201510083726A CN 104777435 A CN104777435 A CN 104777435A
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Abstract
The invention discloses a charging and discharging testing device of a mobile power supply and relates to the technical field of mobile power supply testing. The device comprises an AC/DC (Alternating Current/Direct Current) bidirectional converter, a charging unit and a discharging unit, wherein one end of the AC/DC bidirectional converter is connected with a mains supply; the other end of the AC/DC bidirectional converter is connected with a direct current bus; an input end of the charging unit is connected with the direct current bus; an output end of the charging unit is connected with an input end of the tested mobile power supply; an input end of the discharging unit is connected with an output end of the tested mobile power supply; an output end of the discharging unit is connected with the direct current bus; when the tested mobile power supply is subjected to charging testing, the charging unit takes electricity from the direct current bus and charges the tested mobile power supply; when the tested mobile power supply is subjected to discharging testing, the tested mobile power supply discharges electricity to the discharging unit; and the electricity is output to the direct current bus after DC/DC conversion by the discharging unit.
Description
Technical field
The invention relates to portable power source technical field of measurement and test.
Background technology
In recent years, for saving fuselage interior space, mobile intelligent terminal generally adopts the non-removable design of battery, due to the limited battery capacity that mobile intelligent terminal is built-in, many users can bring a portable power source when going out working, to increase the cruising time of mobile intelligent terminal, therefore portable power source obtains general application.
Portable power source generally needed to carry out charge-discharge test before dispatching from the factory.Usually, the mode of carrying out charge-discharge test to portable power source is charged to portable power source with charger, then discharge to portable power source with discharge resistance, during electric discharge, the energy that portable power source stores is discharged resistance consumption, and electric energy conversion is that heat energy is discharged in environment and goes by discharge resistance.Adopt this test mode to carry out charge-discharge test to large batch of portable power source, the waste of the energy will be caused.
Summary of the invention
For the above-mentioned technical matters that prior art exists, the invention provides a kind of portable power source charge-discharge testing device, and it can reduce in waste portable power source being carried out to the energy in charge-discharge test process.
For achieving the above object, the invention provides following technical scheme.
Portable power source charge-discharge testing device, comprise AC/DC reversible transducer, DC bus, charhing unit and discharge cell, AC/DC reversible transducer one end connects civil power, the other end connects DC bus, charhing unit input end connects DC bus, output terminal connects the input end of tested portable power source, discharge cell input end connects the output terminal of tested portable power source, output terminal connects DC bus, when carrying out charging measurement to tested portable power source, charhing unit is from DC bus power taking and to this tested portable power source charging; When carrying out discharge test to tested portable power source, this tested portable power source discharges to discharge cell, carries out exporting DC bus to after DC/DC conversion through discharge cell.
Wherein, a charhing unit and a discharge cell form a charge/discharge unit, charge/discharge unit has two, each charge/discharge unit connects a tested portable power source, when a charge/discharge unit pair tested portable power source corresponding with it carries out discharge test, another charge/discharge unit pair tested portable power source corresponding with it carries out charging measurement.
Wherein, AC/DC reversible transducer comprises inversion rectification multiplex circuit, and commercial power rectification becomes direct current to become alternating current to be fed to electrical network to the DC bus powered DC inverter with being inputted by DC bus by the timesharing of inversion rectification multiplex circuit.
Wherein, inversion rectification multiplex circuit comprises switching tube Q1, Q2, Q3 and Q4, and switching tube Q1 and Q2 connects, and forms the first brachium pontis, and switching tube Q3 and Q4 connects, and forms the second brachium pontis, the first brachium pontis and the parallel connection of the second brachium pontis.
Wherein, AC/DC reversible transducer also comprises two-way voltage conversion circuit, two-way voltage conversion circuit is serially connected between inversion rectification multiplex circuit and DC bus, two-way voltage conversion circuit comprises electric capacity C1, electric capacity C2, switching tube Q5, switching tube Q6 and transformer T1, the primary coil of transformer T1 is in parallel with electric capacity C1 again after connecting with switching tube Q5, the two ends of electric capacity C1 connect inversion rectification multiplex circuit, the secondary coil of transformer T1 is in parallel with electric capacity C2 again after connecting with switching tube Q6, and the two ends of electric capacity C2 connect DC bus.
Wherein, charhing unit comprises K switch 1, K switch 1 is serially connected between the input end of DC bus and tested portable power source, discharge cell comprises the K switch 2 of the break-make of the discharge loop that the output terminal for controlling tested portable power source is formed via discharge cell, when charge/discharge unit carries out charging measurement to tested portable power source, K switch 1 closes and K switch 2 disconnects, and when charge/discharge unit carries out discharge test to tested portable power source, K switch 2 closes and K switch 1 disconnects.
Wherein, discharge cell comprises inductance L 2, switching tube Q7, diode D1, electric capacity C3 and resistance R1, inductance L 2 one end connects the output head anode of tested portable power source, the other end connects the positive pole of diode D1, the negative pole of diode D1 connects one end of electric capacity C3, one end of the other end contact resistance R1 of electric capacity C3, the other end of resistance R1 connects the negative pole of output end of tested portable power source, switching tube Q7 is connected between the contact of electric capacity C3 and resistance R1 and the positive pole of diode D1, DC bus comprises positive direct-current bus and negative DC bus, the two ends of electric capacity C3 connect positive direct-current bus and negative DC bus respectively.
The beneficial effect of the invention is: the rectifier substituting the charger in traditional charge-discharge test with AC/DC reversible transducer, it can realize the two-way changing of AC/DC, combined with DC bus and charge/discharge unit, the realizing bidirectional electric energy flow between tested portable power source and electrical network can be realized, when carrying out charging measurement, get civil power to charge to tested portable power source, be fed to telegram in reply net again after being converted by the electric energy that tested portable power source exports when carrying out discharge test or recycle, instead of consume with discharge resistance, as can be seen here, the electric energy loss that portable power source charge-discharge testing device is carrying out producing in the process of charge-discharge test to portable power source of the invention is less, compared to traditional portable power source charge-discharge test mode, it can reduce in waste portable power source being carried out to the energy in charge-discharge test process, economize on resources.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the portable power source charge-discharge testing device of the invention.
Fig. 2 is the circuit theory diagrams of another embodiment of the invention.
Reference numeral comprises: AC/DC reversible transducer 1, inversion rectification multiplex circuit 11, two-way voltage conversion circuit 12, charge/discharge unit 2, charhing unit 21,21 ＇, discharge cell 22,22 ＇, tested portable power source 3,3 ＇, positive direct-current bus a, negative DC bus b.
Embodiment
Below in conjunction with specific embodiment, the invention is elaborated.
As shown in Figure 1, the portable power source charge-discharge testing device of the present embodiment comprises AC/DC reversible transducer 1, positive direct-current bus a, negative DC bus b and charge/discharge unit 2, wherein AC/DC reversible transducer 1 is made up of inversion rectification multiplex circuit 11 and two-way voltage conversion circuit 12, and charge/discharge unit 2 is made up of charhing unit 21 and discharge cell 22.As shown in Figure 1, inversion rectification multiplex circuit 11 mainly comprises a single-phase full-bridge inverter be made up of switching tube Q1-Q4, is worked in coordination by these four switching tubes of gauge tap pipe Q1-Q4, timesharing can realize the electrical energy transfer of rectification and inversion both direction.On the primary coil and secondary coil of transformer T1, series connection tandem tap pipe Q5 and Q6 respectively, is coordinated electric capacity C1 and C2 respectively, is coordinated, just timesharing can form the contrary Switching Power Supply in two electrical energy transfer directions by gauge tap pipe Q5 and Q6.Charhing unit 21 mainly comprises K switch 1, and it is serially connected between the input anode of positive direct-current bus a and tested portable power source 3.In discharge cell 22, wherein inductance L 2, diode D1, switching tube Q7 and electric capacity C3 form a boost circuit, and output head anode and the negative pole of output end of tested portable power source 3 are connected two input ends of above-mentioned boost circuit respectively with resistance R1 via K switch 2.
See Fig. 1, when charging measurement is carried out to tested portable power source 3, K switch 1 closes, K2 disconnects, inversion rectification multiplex circuit 11 is got civil power and is carried out rectification, and by the direct current input two-way voltage conversion circuit 12 after rectification, gauge tap pipe Q5 and Q6 coordinates, electric energy is made to be delivered to secondary coil from the primary coil of transformer T1, be delivered to positive direct-current bus a and negative DC bus b by electric capacity C2 again, thus charge, by pwm signal gauge tap pipe Q5 to tested portable power source 3, adjust the dutycycle of this pwm signal, i.e. adjustable charging voltage.When discharge test is carried out to tested portable power source 3, K switch 2 closes, K1 disconnects, described boost circuit in discharge cell 22 is input to positive direct-current bus a and negative DC bus b after being boosted by the voltage that tested portable power source 3 exports again, gauge tap pipe Q5 and Q6 coordinates, make electric energy be delivered to primary coil from the secondary coil of transformer T1, then be input to inversion rectification multiplex circuit 11 by electric capacity C1, after carrying out inversion by inversion rectification multiplex circuit 11, be fed to electrical network again.
Resistance R1 is that discharge current detects resistance, by detecting the pressure drop of resistance R1, can learn the discharge current of tested portable power source 3, controlling the dutycycle of the PWM drive singal of the switching tube Q7 in described boost circuit accordingly, just can realize the control to discharge current.By discharge cell 22 and AC/DC reversible transducer 1, the feeding electric energy telegram in reply net tested portable power source 3 exported when carrying out discharge test to tested portable power source 3, instead of adopt discharge resistance to consume, thus decrease the waste of the energy.
As another embodiment, as shown in Figure 2, be provided with two charge/discharge units 2,2 ＇, they carry out charge-discharge test to tested portable power source 3,3 ＇ respectively, by gauge tap K1, K2, K1 ＇ and K2 ＇, when one in above-mentioned two charge/discharge units can be made to carry out discharge test to the tested portable power source corresponding with it, another carries out charging measurement to the tested portable power source corresponding with it.Such as, K switch 1 and K2 ＇ close, K2 and K1 ＇ disconnects, now charge/discharge unit 2 ＇ carries out discharge test to tested portable power source 3 ＇, the electric energy that tested portable power source 3 ＇ exports is transported in positive direct-current bus a and negative DC bus b by discharge cell 22 ＇, meanwhile, charge/discharge unit 2 carries out charging measurement to tested portable power source 3, and charhing unit 21 charges also to tested portable power source 3 from DC bus power taking.Otherwise in like manner.Therefore, the electric energy that tested portable power source 3 ＇ exports when discharge test is used to supply tested portable power source 3 and carries out charging measurement, otherwise, the electric energy that tested portable power source 3 exports when discharge test is also used to supply tested portable power source 3 ＇ and carries out charging measurement, thus realize electric energy and recycle between each charge/discharge unit and tested portable power source, energy-saving effect is better.AC/DC reversible transducer 1 plays the effect of equilibrium charging power and discharge power in this process.
Finally should be noted that; above embodiment is only in order to illustrate the technical scheme of the invention; but not the restriction to the invention protection domain; although done to explain to the invention with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to the technical scheme of the invention or equivalent replacement, and not depart from essence and the scope of the invention technical scheme.
Claims (7)
1. portable power source charge-discharge testing device, it is characterized in that, comprise AC/DC reversible transducer, DC bus, charhing unit and discharge cell, AC/DC reversible transducer one end connects civil power, the other end connects DC bus, charhing unit input end connects DC bus, output terminal connects the input end of tested portable power source, discharge cell input end connects the output terminal of tested portable power source, output terminal connects DC bus, when carrying out charging measurement to tested portable power source, charhing unit is from DC bus power taking and to this tested portable power source charging; When carrying out discharge test to tested portable power source, this tested portable power source discharges to discharge cell, carries out exporting DC bus to after DC/DC conversion through discharge cell.
2. portable power source charge-discharge testing device according to claim 1, it is characterized in that, a charhing unit and a discharge cell form a charge/discharge unit, charge/discharge unit has two, each charge/discharge unit connects a tested portable power source, when a charge/discharge unit pair tested portable power source corresponding with it carries out discharge test, another charge/discharge unit pair tested portable power source corresponding with it carries out charging measurement.
3. portable power source charge-discharge testing device according to claim 1 and 2, it is characterized in that, AC/DC reversible transducer comprises inversion rectification multiplex circuit, and commercial power rectification becomes direct current to become alternating current to be fed to electrical network to the DC bus powered DC inverter with being inputted by DC bus by the timesharing of inversion rectification multiplex circuit.
4. portable power source charge-discharge testing device according to claim 3, is characterized in that, inversion rectification multiplex circuit comprises switching tube Q1, Q2, Q3 and Q4, switching tube Q1 and Q2 connects, and forms the first brachium pontis, and switching tube Q3 and Q4 connects, form the second brachium pontis, the first brachium pontis and the parallel connection of the second brachium pontis.
5. portable power source charge-discharge testing device according to claim 3, it is characterized in that, AC/DC reversible transducer also comprises two-way voltage conversion circuit, two-way voltage conversion circuit is serially connected between inversion rectification multiplex circuit and DC bus, two-way voltage conversion circuit comprises electric capacity C1, electric capacity C2, switching tube Q5, switching tube Q6 and transformer T1, the primary coil of transformer T1 is in parallel with electric capacity C1 again after connecting with switching tube Q5, the two ends of electric capacity C1 connect inversion rectification multiplex circuit, the secondary coil of transformer T1 is in parallel with electric capacity C2 again after connecting with switching tube Q6, the two ends of electric capacity C2 connect DC bus.
6. portable power source charge-discharge testing device according to claim 1, it is characterized in that, charhing unit comprises K switch 1, K switch 1 is serially connected between the input end of DC bus and tested portable power source, discharge cell comprises the K switch 2 of the break-make of the discharge loop that the output terminal for controlling tested portable power source is formed via discharge cell, when charge/discharge unit carries out charging measurement to tested portable power source, K switch 1 closes and K switch 2 disconnects, when charge/discharge unit carries out discharge test to tested portable power source, K switch 2 closes and K switch 1 disconnects.
7. portable power source charge-discharge testing device according to claim 1, it is characterized in that, discharge cell comprises inductance L 2, switching tube Q7, diode D1, electric capacity C3 and resistance R1, inductance L 2 one end connects the output head anode of tested portable power source, the other end connects the positive pole of diode D1, the negative pole of diode D1 connects one end of electric capacity C3, one end of the other end contact resistance R1 of electric capacity C3, the other end of resistance R1 connects the negative pole of output end of tested portable power source, switching tube Q7 is connected between the contact of electric capacity C3 and resistance R1 and the positive pole of diode D1, DC bus comprises positive direct-current bus and negative DC bus, the two ends of electric capacity C3 connect positive direct-current bus and negative DC bus respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510083726.0A CN104777435A (en) | 2015-02-14 | 2015-02-14 | Charging and discharging testing device of mobile power supply |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510083726.0A CN104777435A (en) | 2015-02-14 | 2015-02-14 | Charging and discharging testing device of mobile power supply |
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| CN104777435A true CN104777435A (en) | 2015-07-15 |
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| CN201510083726.0A Pending CN104777435A (en) | 2015-02-14 | 2015-02-14 | Charging and discharging testing device of mobile power supply |
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| 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 |
| CN107070231A (en) * | 2017-01-05 | 2017-08-18 | 上海蔚来汽车有限公司 | Series-to-parallel converter with multi input and use its charging and conversion electric facility |
| CN107783046A (en) * | 2016-08-30 | 2018-03-09 | 维谛技术有限公司 | A kind of power-supply system of achievable on-line checking battery |
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| 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 |
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Application publication date: 20150715 |
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