CN103812378A - Battery testing device with multi-channel energy flowing in two directions - Google Patents
Battery testing device with multi-channel energy flowing in two directions Download PDFInfo
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- CN103812378A CN103812378A CN201410050458.8A CN201410050458A CN103812378A CN 103812378 A CN103812378 A CN 103812378A CN 201410050458 A CN201410050458 A CN 201410050458A CN 103812378 A CN103812378 A CN 103812378A
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Abstract
The invention provides a battery testing device with multi-channel energy flowing in two directions. The battery testing device comprises an isolation transformer, an AC/DC (Alternating Current/Direct Current) converter, a direct-current side support capacitor, at least one DC/DC converter and a control system, wherein the control system is connected with the AC/DC converter and the DC/DC converter, respectively, the AC/DC converter is connected to the isolation transformer and the DC/DC converter, and the direct-current side support capacitor is connected between the positive and negative output ends of the AD/DC converter; energy flows in two directions so that electricity can be saved, and the test efficiency and the test reliability can be improved.
Description
Technical field
The present invention relates to a kind of battery test apparatus, refer in particular to a kind of multichannel energy two-way type battery test apparatus.
Background technology
Electric automobile, as the strategic new industry of China, is subject to country and pays much attention to and local government's extensive concern, and relevant enterprise is active response also, releases one after another new-energy automobile product.From 2006, the battery testing standard of national new-energy automobile bulletin management was formally implemented, and the electrokinetic cell on electric automobile must carry out compulsory test.Existing battery detection equipment is more, but major part is all energy one-way type, causes the energy to waste in a large number; And equipment mode of operation is limited under constant voltage, constant current mode, it cannot accomplish, according to the actual applying working condition of battery, battery is carried out to detailed test, equipment output voltage range is narrower, stable state accuracy and dynamic property all unsatisfactory.
Summary of the invention
The technical problem to be solved in the present invention, is to provide a kind of multichannel energy two-way type battery test apparatus, improves testing efficiency and testing reliability.
The present invention is achieved in that a kind of multichannel energy two-way type battery test apparatus, comprise isolating transformer, AC/DC converter, DC side Support Capacitor, at least one DC/DC converter and control system, described control system connects respectively described AC/DC converter and described DC/DC converter, described AC/DC converter is connected to described isolating transformer and described DC/DC converter, connects described DC side Support Capacitor between the both positive and negative polarity output of described AC/DC converter.
Further, described DC/DC converter comprises a DC converter and the 2nd DC converter, described AC/DC converter connects respectively a described DC converter and described the 2nd DC converter, and described control system connects respectively a described DC converter and described the 2nd DC converter.
Further, a described DC converter comprises K switch 1, K switch 2, out put reactor L1 and output filter capacitor C1, after the input of the output of described K switch 1 and described K switch 2 is in parallel, be connected to one end of described out put reactor L1, the other end of described out put reactor L1 is connected to one end of described output filter capacitor C1 and the cathode output end of a described DC converter, and the other end of described output filter capacitor C1 is connected to the cathode output end of a described DC converter;
Described the 2nd DC converter comprises K switch 3, K switch 4, out put reactor L2 and output filter capacitor C2, after the input of the output of described K switch 3 and described K switch 4 is in parallel, be connected to one end of described out put reactor L2, the other end of described out put reactor L2 is connected to one end of described output filter capacitor C2 and the cathode output end of described the 2nd DC converter, and the other end of described output filter capacitor C2 is connected to the cathode output end of described the 2nd DC converter;
The positive pole of described AC/DC converter connects respectively the input of described K switch 1 and the input of described K switch 3, the negative pole of described AC/DC converter connects respectively the other end, the output of described K switch 4 and the other end of described output filter capacitor C2 of the output of described K switch 2, described output filter capacitor C1, and described control system connects respectively the control end of described K switch 1, control end, the control end of described K switch 3 and the control end of described K switch 4 of described K switch 2.
Further, a described DC converter comprises K switch 13, K switch 14, K switch 15, K switch 16, out put reactor L7, out put reactor L8 and output filter capacitor C7, after the input of the output of described K switch 13 and described K switch 14 is in parallel, be connected to one end of described out put reactor L7, the output of described K switch 15 and the input parallel connection of described K switch 16 are connected one end of described out put reactor L8 afterwards, after described out put reactor L7 is in parallel with described out put reactor L8, be connected to one end of described output filter capacitor C7 and the cathode output end of a described DC converter, the other end of described output filter capacitor C7 is connected to the cathode output end of a described DC converter,
Described the 2nd DC converter comprises K switch 17, K switch 18, K switch 19, K switch 20, out put reactor L9, out put reactor L10 and output filter capacitor C8, the output of described K switch 17 and the input parallel connection of described K switch 18 are connected one end of described out put reactor L9 afterwards, the output of described K switch 19 and the input parallel connection of described K switch 20 are connected one end of described out put reactor L10 afterwards, after described out put reactor L9 is in parallel with described out put reactor L10, be connected to one end of described output filter capacitor C8 and the cathode output end of described the 2nd DC converter, the other end of described output filter capacitor C8 is connected to the cathode output end of described the 2nd DC converter,
The positive pole of described AC/DC converter connects respectively the input of described K switch 13, the input of described K switch 15, the input of the input of described K switch 17 and described K switch 19, the negative pole of described AC/DC converter connects respectively the output of described K switch 14, the output of described K switch 16, the other end of described output filter capacitor C7, the output of described K switch 18, the other end of the output of described K switch 20 and described output filter capacitor C8, described control system connects respectively the control end of described K switch 13, the control end of described K switch 14, the control end of described K switch 15, the control end of described K switch 16, the control end of described K switch 17, the control end of described K switch 18, the control end of the control end of described K switch 19 and described K switch 20.
Further, a described DC converter comprises K switch 21, K switch 22, K switch 23, K switch 24, out put reactor L11, out put reactor L12 and output filter capacitor C9, after the input of the output of described K switch 21 and described K switch 22 is in parallel, be connected to one end of described out put reactor L11, the other end of described out put reactor L11 is connected to one end of described output filter capacitor C9 and the cathode output end of a described DC converter, the output of described K switch 23 and the input parallel connection of described K switch 24 are connected one end of described out put reactor L12 afterwards, the other end of described out put reactor L12 is connected to the other end of described output filter capacitor C9 and the cathode output end of a described DC converter,
Described the 2nd DC converter comprises K switch 25, K switch 26, K switch 27, K switch 28, out put reactor L13, out put reactor L14 and output filter capacitor C10, the output of described K switch 25 and the input parallel connection of described K switch 26 are connected one end of described out put reactor L13 afterwards, the other end of described out put reactor L13 is connected to one end of described output filter capacitor C10 and the cathode output end of described the 2nd DC converter, the output of described K switch 27 and the input parallel connection of described K switch 28 are connected one end of described out put reactor L14 afterwards, the other end of described out put reactor L14 is connected to the other end of described output filter capacitor C10 and the cathode output end of described the 2nd DC converter,
The positive pole of described AC/DC converter connects respectively the input of described K switch 21, the input of described K switch 23, the input of the input of described K switch 25 and described K switch 27, the negative pole of described AC/DC converter connects respectively the output of described K switch 22, the output of described K switch 24, the output of the output of described K switch 26 and described K switch 28, described control system is the control end of connecting valve K21 respectively, the control end of K switch 22, the control end of K switch 23, the control end of K switch 24, the control end of K switch 25, the control end of K switch 26, the control end of the control end of K switch 27 and K switch 28.
Further, also comprise the first electromagnetic interface filter and the second electromagnetic interface filter, described the first electromagnetic interface filter is connected to a described DC converter, and described the second electromagnetic interface filter is connected to described the 2nd DC converter.
Further, described DC/DC converter comprises the 3rd DC converter and the 4th DC converter, the cathode output end of described the 3rd DC converter is connected to the cathode output end of described the 4th DC converter, the cathode output end of described the 3rd DC converter is connected to the cathode output end of described the 4th DC converter, described AC/DC converter connects respectively described the 3rd DC converter and described the 4th DC converter, and described control system connects respectively described the 3rd DC converter and described the 4th DC converter.
Further, described the 3rd DC converter comprises K switch 5, K switch 6, out put reactor L3 and output filter capacitor C3, after the input of the output of described K switch 5 and described K switch 6 is in parallel, be connected to one end of described out put reactor L3, the other end of described out put reactor L3 is connected to one end of described output filter capacitor C3 and the cathode output end of described the 3rd DC converter, and the other end of described output filter capacitor C3 is connected to the cathode output end of described the 3rd DC converter;
Described the 4th DC converter comprises K switch 7, K switch 8, out put reactor L4 and output filter capacitor C4, after the output of described K switch 7 is in parallel with the input of described switch, be connected to one end of described out put reactor L4, the other end of described out put reactor L4 is connected to one end of described output filter capacitor C4 and the cathode output end of described the 4th DC converter, and the other end of described output filter capacitor C4 is connected to the cathode output end of described the 4th DC converter;
The cathode output end of described the 3rd DC converter is connected to the cathode output end of described the 4th DC converter, the cathode output end of described the 3rd DC converter is connected to the cathode output end of described the 4th DC converter, the positive pole of described AC/DC converter connects respectively the input of described K switch 5 and the input of described K switch 7, the negative pole of described AC/DC converter connects respectively the output of described K switch 6, the other end of described output filter capacitor C3, the other end of the output of described K switch 8 and described output filter capacitor C4, described control system connects respectively the control end of described K switch 5, the control end of described K switch 6, the control end of the control end of described K switch 7 and described K switch 8.
Further, described the 3rd DC converter comprises K switch 29, K switch 30, K switch 31, K switch 32, out put reactor L15, out put reactor L16 and output filter capacitor C11, after the input of the output of described K switch 29 and described K switch 30 is in parallel, be connected to one end of described out put reactor L15, the other end of described out put reactor L15 is connected to one end of described output filter capacitor C11 and the cathode output end of described the 3rd DC converter, the output of described K switch 31 and the input parallel connection of described K switch 32 are connected one end of described out put reactor L16 afterwards, the other end of described out put reactor L16 is connected to the other end of described output filter capacitor C11 and the cathode output end of described the 3rd DC converter,
Described the 4th DC converter comprises K switch 33, K switch 34, K switch 35, K switch 36, out put reactor L17, out put reactor L18 and output filter capacitor C12, the output of described K switch 33 and described K switch 34 input parallel connections are connected one end of described out put reactor L17 afterwards, the other end of described out put reactor L17 is connected to one end of described output filter capacitor C12 and the cathode output end of described the 4th DC converter, the output of described K switch 35 and the input parallel connection of described K switch 36 are connected one end of described out put reactor L18 afterwards, the other end of described out put reactor L18 is connected to the other end of described output filter capacitor C12 and the cathode output end of described the 4th DC converter,
The cathode output end of described the 3rd DC converter is connected to the cathode output end of described the 4th DC converter, the cathode output end of described the 3rd DC converter is connected to the cathode output end of described the 4th DC converter, the positive pole of described AC/DC converter connects respectively the input of described K switch 29, the input of described K switch 31, the input of the input of described K switch 33 and described K switch 35, the negative pole of described AC/DC converter connects respectively the output of described K switch 30, the output of described K switch 32, the output of the output of described K switch 34 and described K switch 36, described control system connects respectively the control end of described K switch 29, the control end of described K switch 30, the control end of described K switch 31, the control end of described K switch 32, the control end of described K switch 33, the control end of described K switch 34, the control end of the control end of described K switch 35 and described K switch 36.
Further, also comprise the 3rd electromagnetic interface filter, described the 3rd electromagnetic interface filter connects respectively described the 3rd DC converter and described the 4th DC converter.
Further, described DC/DC converter comprises the 5th DC converter and the 6th DC converter, described the 5th DC converter only has cathode output end, described the 6th DC converter only has AC/DC converter described in cathode output end to connect respectively described the 5th DC converter and described the 6th DC converter, and described control system connects respectively described the 5th DC converter and described the 6th DC converter.
Further, described the 5th DC converter comprises K switch 9, K switch 10, out put reactor L5 and output filter capacitor C5, the one end that is connected to described out put reactor L5 after the input of the output of described K switch 9 and described K switch 10 is in parallel, the other end of described out put reactor L5 is connected to one end of described output filter capacitor C5 and the cathode output end of described the 5th DC converter;
Described the 6th DC converter comprises K switch 11, K switch 12, out put reactor L16 and output filter capacitor C6, the one end that is connected to described out put reactor L6 after the input of the output of described K switch 11 and described K switch 12 is in parallel, the other end of described out put reactor L6 is connected to one end of described output filter capacitor C6 and the cathode output end of described the 6th DC converter;
The positive pole of described AC/DC converter connects respectively the input of described K switch 9 and the input of described K switch 11, the negative pole of described AC/DC converter connects respectively the other end, the output of described K switch 12 and the other end of described output filter capacitor C6 of the output of described K switch 10, described output filter capacitor C5, and described control system connects respectively the control end of described K switch 9, control end, the control end of described K switch 11 and the control end of described K switch 12 of described K switch 10.
Further, also comprise the 4th electromagnetic interface filter, the electrode input end of described the 4th electromagnetic interface filter is connected to the cathode output end of described the 5th DC converter, and the negative input of described the 4th electromagnetic interface filter is connected to the cathode output end of described the 6th DC converter.
Further, described isolating transformer structure is star/triangle form or star/star formula.
Further, described K switch 1, described K switch 2, described K switch 3, described K switch 4, described K switch 5, described K switch 6, described K switch 7, described K switch 8, described K switch 9, described K switch 10, described K switch 11, described K switch 12, described K switch 13, described K switch 14, described K switch 15, described K switch 16, described K switch 17, described K switch 18, described K switch 19, described K switch 20, described K switch 21, described K switch 22, described K switch 23, described K switch 24, described K switch 25, described K switch 26, described K switch 27, described K switch 28, described K switch 29, described K switch 30, described K switch 31, described K switch 32, described K switch 33, described K switch 34, described K switch 35 and described K switch 36 are power transistor.
Further, described power transistor is IGBT or BJT or MOSFET.
The invention has the advantages that: a kind of multichannel energy two-way type battery test apparatus, by control system, the duty ratio of different brachium pontis is carried out to phase shifting control, can further reduce output current ripple, realize the two-way flow of energy, in the time that battery is charged, equipment by the Energy transfer of electrical network to battery, in the time that battery is discharged, equipment can be by energy unnecessary battery with higher quality feedback to electrical network, save electric energy, can test accurately in all directions electrokinetic cell according to actual applying working condition, improve testing efficiency and testing reliability.
Accompanying drawing explanation
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is schematic block diagram of the present invention.
Fig. 2 a is the independent working mode schematic diagram of half-bridge topology of the present invention.
Fig. 2 b is the parallel operation pattern diagram of half-bridge topology of the present invention.
Fig. 2 c is the difference mode of operation schematic diagram of half-bridge topology of the present invention.
Fig. 3 is the phase shifting work mode schematic diagram of half-bridge topology of the present invention.
Fig. 4 a is the independent working mode schematic diagram of full-bridge topology of the present invention.
Fig. 4 b is the parallel operation pattern diagram of full-bridge topology of the present invention.
Embodiment
Refer to shown in Fig. 1, a kind of multichannel energy two-way type battery test apparatus, comprise isolating transformer 10, AC/DC converter 20, DC side Support Capacitor C30, at least one DC/DC converter 40 and control system 50, described control system 50 connects respectively described AC/DC converter 20 and described DC/DC converter 40, described AC/DC converter 20 is connected to described isolating transformer 10 and described DC/DC converter 40, between the both positive and negative polarity output of described AC/DC converter 20, connect described DC side Support Capacitor C30, described isolating transformer 10 is star/triangle form or star/star formula, three phase network first carries out electromagnetic isolation by isolating transformer 10, three-phase electric energy after isolation is as the input of AC/DC converter 20, by control system 50, the switch in AC/DC converter 20 is reasonably controlled, make a stable common DC bus voltage of its output, so that supplying with follow-up DC/DC converter 40 uses, DC side Support Capacitor C30 is used for stablizing this DC bus-bar voltage and leaches ripple, for this common DC bus voltage, can be regulated flexibly by 40 load-carrying differences of DC/DC converter, by the control of control system 50, device can be operated under load charge or discharge state, in the time that device is operated in load charge mode, electric current is transferred to AC/DC converter 20 by three phase mains, being transferred to afterwards DC/DC converter 40 processes, be transferred to afterwards battery, install power grid energy supply load, in the time that device is operated in discharge mode, current delivery, to DC/DC converter 40, after DC/DC converter 40 is processed, is processed delivery of electrical energy to AC/DC converter 20, be finally transferred to electrical network, installs load excess energy is fed back to electrical network, energy savings,
Each DC/DC converter comprises two direct current output channels, each direct current output channel can take half-bridge topology or full-bridge topology to realize, while taking half-bridge topology, switch or change by external cabling terminal (not shown) by control system 50 control relay (not shown), can control two direct current output channels and be operated in stand-alone mode, under paralleling model and difference modes, while taking full-bridge topology, switch or change by external cabling terminal by control system 50 control relays, can control two direct current output channels is operated under stand-alone mode and paralleling model, each pattern that the DC/DC converter of arbitrary extension all can be worked above-mentioned, and between multiple DC/DC converters, can be operated under stand-alone mode and paralleling model.
As shown in Fig. 2 a, Fig. 3 and Fig. 4 a, described DC/DC converter 40 comprises a DC converter 41 and the 2nd DC converter 42, described AC/DC converter 20 connects respectively a described DC converter 41 and described the 2nd DC converter 42, described control system 50 connects respectively a described DC converter 41 and described the 2nd DC converter 42, also comprise the first electromagnetic interface filter (not shown) and the second electromagnetic interface filter (not shown), described the first electromagnetic interface filter is connected to a described DC converter 41, and described the second electromagnetic interface filter is connected to described the 2nd DC converter 42.
As shown in Fig. 2 b and Fig. 4 b, described DC/DC converter 40 comprises the 3rd DC converter 43 and the 4th DC converter 44, described AC/DC converter 20 connects respectively described the 3rd DC converter 43 and described the 4th DC converter 44, the cathode output end of described the 3rd DC converter 43 is connected to the cathode output end of described the 4th DC converter 44, the cathode output end of described the 3rd DC converter 43 is connected to the cathode output end of described the 4th DC converter 44, described control system 50 connects respectively described the 3rd DC converter 43 and described the 4th DC converter 44, also comprise the 3rd electromagnetic interface filter (not shown), described the 3rd electromagnetic interface filter connects respectively described the 3rd DC converter 43 and described the 4th DC converter 44.
As shown in Figure 2 c, described DC/DC converter 40 comprises the 5th DC converter 45 and the 6th DC converter 46, described AC/DC converter 20 connects respectively described the 5th DC converter 45 and described the 6th DC converter 46, described control system 50 connects respectively described the 5th DC converter 45 and described the 6th DC converter 46, described the 5th DC converter 45 only has cathode output end, described the 6th DC converter 46 only has cathode output end, also comprise the 4th electromagnetic interface filter (not shown), the positive pole of described the 4th electromagnetic interface filter is connected to the positive pole of described the 5th DC converter 45, the negative pole of described the 4th electromagnetic interface filter is connected to the negative pole of described the 6th DC converter 46.
As shown in Figure 2 a, take half-bridge topology form, be operated in stand-alone mode lower time, a described DC converter 41 comprises K switch 1, K switch 2, out put reactor L1 and output filter capacitor C1, after the input of the output of described K switch 1 and described K switch 2 is in parallel, be connected to one end of described out put reactor L1, the other end of described out put reactor L1 is connected to one end of described output filter capacitor C1 and the cathode output end of a described DC converter 41, and the other end of described output filter capacitor C1 is connected to the cathode output end of a described DC converter 41;
Described the 2nd DC converter 42 comprises K switch 3, K switch 4, out put reactor L2 and output filter capacitor C2, after the input of the output of described K switch 3 and described K switch 4 is in parallel, be connected to one end of described out put reactor L2, the other end of described out put reactor L2 is connected to one end of described output filter capacitor C2 and the cathode output end of described the 2nd DC converter 42, and the other end of described output filter capacitor C2 is connected to the cathode output end of described the 2nd DC converter 42;
The positive pole of described AC/DC converter 20 connects respectively the input of described K switch 1 and the input of described K switch 3, the negative pole of described AC/DC converter 20 connects respectively the other end, the output of described K switch 4 and the other end of described output filter capacitor C2 of the output of described K switch 2, described output filter capacitor C1, and described control system 50 connects respectively the control end of described K switch 1, control end, the control end of described K switch 3 and the control end of described K switch 4 of described K switch 2;
DC bus-bar voltage is provided by isolating transformer 10 and AC/DC converter 20 above, in the time that two direct current channels are operated in stand-alone mode, although two passage common DC bus, but other strong power part is completely independent, two passages respectively carry direct current output loading and work alone, whole equipment can be with the DC load of maximum quantity, by control system 50 to switch K1, K switch 2, K switch 3 and K switch 4 are rationally controlled, DC bus-bar voltage is converted into the direct voltage of various grades to export to the different loads that require, according to the different demands of client, control system 50 can be controlled whole equipment and charge to load, electric discharge, and can realize constant current mode in charging process, constant voltage mode, permanent power mode, and constant current/constant voltage mode, in discharge process, can realize constant current mode, permanent power mode, constant-resistance pattern and constant current/constant voltage mode, and can realize step shape for charging and discharging currents waveform, pulse form, slope shape and shapes of any curves.
As shown in Figure 2 b, take half-bridge topology form, be operated under paralleling model, described the 3rd DC converter 43 comprises K switch 5, K switch 6, out put reactor L3 and output filter capacitor C3, after the input of the output of described K switch 5 and described K switch 6 is in parallel, be connected to one end of described out put reactor L3, the other end of described out put reactor L3 is connected to one end of described output filter capacitor C3 and the cathode output end of described the 3rd DC converter 43, and the other end of described output filter capacitor C3 is connected to the cathode output end of described the 3rd DC converter 43;
Described the 4th DC converter 44 comprises K switch 7, K switch 8, out put reactor L4 and output filter capacitor C4, after the output of described K switch 7 is in parallel with the input of described switch, be connected to one end of described out put reactor L4, the other end of described out put reactor L4 is connected to one end of described output filter capacitor C4 and the cathode output end of described the 4th DC converter 44, and the other end of described output filter capacitor C4 is connected to the cathode output end of described the 4th DC converter 44;
The cathode output end of described the 3rd DC converter 43 is connected to the cathode output end of described the 4th DC converter 44, the cathode output end of described the 3rd DC converter 43 is connected to the cathode output end of described the 4th DC converter 44, the positive pole of described AC/DC converter 20 connects respectively the input of described K switch 5 and the input of described K switch 7, the negative pole of described AC/DC converter 20 connects respectively the output of described K switch 6, the other end of described output filter capacitor C3, the other end of the output of described K switch 8 and described output filter capacitor C4, described control system 50 connects respectively the control end of described K switch 5, the control end of described K switch 6, the control end of the control end of described K switch 7 and described K switch 8,
As shown in Figure 2 c, take half-bridge topology form, be operated under difference modes, described the 5th DC converter 45 comprises K switch 9, K switch 10, out put reactor L5 and output filter capacitor C5, the one end that is connected to described out put reactor L5 after the input of the output of described K switch 9 and described K switch 10 is in parallel, the other end of described out put reactor L5 is connected to one end of described output filter capacitor C5 and the cathode output end of described the 5th DC converter 45;
Described the 6th DC converter 46 comprises K switch 11, K switch 12, out put reactor L16 and output filter capacitor C6, the one end that is connected to described out put reactor L6 after the input of the output of described K switch 11 and described K switch 12 is in parallel, the other end of described out put reactor L6 is connected to one end of described output filter capacitor C6 and the cathode output end of described the 6th DC converter 46;
The positive pole of described AC/DC converter 20 connects respectively the input of described K switch 9 and the input of described K switch 11, the negative pole of described AC/DC converter 20 connects respectively the other end, the output of described K switch 12 and the other end of described output filter capacitor C6 of the output of described K switch 10, described output filter capacitor C5, and described control system 50 connects respectively the control end of described K switch 9, control end, the control end of described K switch 11 and the control end of described K switch 12 of described K switch 10;
Under this pattern, the plus end of the plus end of the 5th DC converter 45 direct current outputs and the 6th DC converter 46 direct current outputs is exported as new positive and negative terminal, equipment output voltage is the poor of two passage output voltages, so now output voltage range can be expanded greatly, control system 50 is coordinated to control to two passages, by control system 50 according to customer requirement, equipment now can be realized constant current mode in charging process, constant voltage mode, permanent power mode and constant current/constant voltage mode, in discharge process, can realize constant current mode, permanent power mode, constant-resistance pattern and constant current/constant voltage mode, and can realize step shape for charging and discharging currents waveform, pulse form, slope shape and shapes of any curves.
As shown in Figure 3, the phase shifting work mode of half-bridge topology, a described DC converter 41 comprises K switch 13, K switch 14, K switch 15, K switch 16, out put reactor L7, out put reactor L8 and output filter capacitor C7, after the input of the output of described K switch 13 and described K switch 14 is in parallel, be connected to one end of described out put reactor L7, the output of described K switch 15 and the input parallel connection of described K switch 16 are connected one end of described out put reactor L8 afterwards, after described out put reactor L7 is in parallel with described out put reactor L8, be connected to one end of described output filter capacitor C7 and the cathode output end of a described DC converter 41, the other end of described output filter capacitor C7 is connected to the cathode output end of a described DC converter 41,
Described the 2nd DC converter 42 comprises K switch 17, K switch 18, K switch 19, K switch 20, out put reactor L9, out put reactor L10 and output filter capacitor C8, the output of described K switch 17 and the input parallel connection of described K switch 18 are connected one end of described out put reactor L9 afterwards, the output of described K switch 19 and the input parallel connection of described K switch 20 are connected one end of described out put reactor L10 afterwards, after described out put reactor L9 is in parallel with described out put reactor L10, be connected to one end of described output filter capacitor C8 and the cathode output end of described the 2nd DC converter 42, the other end of described output filter capacitor C8 is connected to the cathode output end of described the 2nd DC converter 42,
The positive pole of described AC/DC converter 20 connects respectively the input of described K switch 13, the input of described K switch 15, the input of the input of described K switch 17 and described K switch 19, the negative pole of described AC/DC converter connects respectively the output of described K switch 14, the output of described K switch 16, the other end of described output filter capacitor C7, the output of described K switch 18, the other end of the output of described K switch 20 and described output filter capacitor C8, described control system 50 connects respectively the control end of described K switch 13, the control end of described K switch 14, the control end of described K switch 15, the control end of described K switch 16, the control end of described K switch 17, the control end of described K switch 18, the control end of the control end of described K switch 19 and described K switch 20,
As shown in Fig. 4 a, the independent working mode of full-bridge topology, a described DC converter 41 comprises K switch 21, K switch 22, K switch 23, K switch 24, out put reactor L11, out put reactor L12 and output filter capacitor C9, after the input of the output of described K switch 21 and described K switch 22 is in parallel, be connected to one end of described out put reactor L11, the other end of described out put reactor L11 is connected to one end of described output filter capacitor C9 and the cathode output end of a described DC converter 41, the output of described K switch 23 and the input parallel connection of described K switch 24 are connected one end of described out put reactor L12 afterwards, the other end of described out put reactor L12 is connected to the other end of described output filter capacitor C9 and the cathode output end of a described DC converter 41,
Described the 2nd DC converter 42 comprises K switch 25, K switch 26, K switch 27, K switch 28, out put reactor L13, out put reactor L14 and output filter capacitor C10, the output of described K switch 25 and the input parallel connection of described K switch 26 are connected one end of described out put reactor L13 afterwards, the other end of described out put reactor L13 is connected to one end of described output filter capacitor C10 and the cathode output end of described the 2nd DC converter 42, the output of described K switch 27 and the input parallel connection of described K switch 28 are connected one end of described out put reactor L14 afterwards, the other end of described out put reactor L14 is connected to the other end of described output filter capacitor C10 and the cathode output end of described the 2nd DC converter 42,
The positive pole of described AC/DC converter 20 connects respectively the input of described K switch 21, the input of described K switch 23, the input of the input of described K switch 25 and described K switch 27, the negative pole of described AC/DC converter connects respectively the output of described K switch 22, the output of described K switch 24, the output of the output of described K switch 26 and described K switch 28, described control system 50 control end of connecting valve K21 respectively, the control end of K switch 22, the control end of K switch 23, the control end of K switch 24, the control end of K switch 25, the control end of K switch 26, the control end of the control end of K switch 27 and K switch 28.
As shown in Figure 4 b, the parallel operation pattern of full-bridge topology, described the 3rd DC converter 43 comprises K switch 29, K switch 30, K switch 31, K switch 32, out put reactor L15, out put reactor L16 and output filter capacitor C11, after the input of the output of described K switch 29 and described K switch 30 is in parallel, be connected to one end of described out put reactor L15, the other end of described out put reactor L15 is connected to one end of described output filter capacitor C11 and the cathode output end of described the 3rd DC converter 43, the output of described K switch 31 and the input parallel connection of described K switch 32 are connected one end of described out put reactor L16 afterwards, the other end of described out put reactor L16 is connected to the other end of described output filter capacitor C11 and the cathode output end of described the 3rd DC converter 43,
Described the 4th DC converter 44 comprises K switch 33, K switch 34, K switch 35, K switch 36, out put reactor L17, out put reactor L18 and output filter capacitor C12, the output of described K switch 33 and described K switch 34 input parallel connections are connected one end of described out put reactor L17 afterwards, the other end of described out put reactor L17 is connected to one end of described output filter capacitor C12 and the cathode output end of described the 4th DC converter 44, the output of described K switch 35 and the input parallel connection of described K switch 36 are connected one end of described out put reactor L18 afterwards, the other end of described out put reactor L18 is connected to the other end of described output filter capacitor C12 and the cathode output end of described the 4th DC converter 44,
The cathode output end of described the 3rd DC converter 43 is connected to the cathode output end of described the 4th DC converter 44, the cathode output end of described the 3rd DC converter 43 is connected to the cathode output end of described the 4th DC converter 44, the positive pole of described AC/DC converter 20 connects respectively the input of described K switch 29, the input of described K switch 31, the input of the input of described K switch 33 and described K switch 35, the negative pole of described AC/DC converter 20 connects respectively the output of described K switch 30, the output of described K switch 32, the output of the output of described K switch 34 and described K switch 36, described control system 50 connects respectively the control end of described K switch 29, the control end of described K switch 30, the control end of described K switch 31, the control end of described K switch 32, the control end of described K switch 33, the control end of described K switch 34, the control end of the control end of described K switch 35 and described K switch 36,
Now not only can obtain wider output voltage range, can also obtain double load capacity, be that load current and power grade can be double, but load-carrying quantity is than under stand-alone mode few one times, by control system 50 according to customer requirement, equipment now can be realized constant current mode in charging process, constant voltage mode, permanent power mode and constant current/constant voltage mode, in discharge process, can realize constant current mode, permanent power mode, constant-resistance pattern and constant current/constant voltage mode, and can realize step shape for charging and discharging currents waveform, pulse form, slope shape and shapes of any curves, in addition, by two direct current channels are carried out to duty ratio phase shifting control, can further reduce output current ripple.
Described K switch 1, described K switch 2, described K switch 3, described K switch 4, described K switch 5, described K switch 6, described K switch 7, described K switch 8, described K switch 9, described K switch 10, described K switch 11, described K switch 12, described K switch 13, described K switch 14, described K switch 15, described K switch 16, described K switch 17, described K switch 18, described K switch 19, described K switch 20, described K switch 21, described K switch 22, described K switch 23, described K switch 24, described K switch 25, described K switch 26, described K switch 27, described K switch 28, described K switch 29, described K switch 30, described K switch 31, described K switch 32, described K switch 33, described K switch 34, described K switch 35 and described K switch 36 are power transistor, described power transistor is IGBT or BJT or MOSFET.
The invention has the advantages that: a kind of multichannel energy two-way type battery test apparatus, by control system, the duty ratio of different brachium pontis is carried out to phase shifting control, can further reduce output current ripple, realize the two-way flow of energy, in the time that battery is charged, equipment by the Energy transfer of electrical network to battery, in the time that battery is discharged, equipment can be by energy unnecessary battery with higher quality feedback to electrical network, save electric energy, can test accurately in all directions electrokinetic cell according to actual applying working condition, improve testing efficiency and testing reliability.
Although more than described the specific embodiment of the present invention; but being familiar with those skilled in the art is to be understood that; our described specific embodiment is illustrative; rather than for the restriction to scope of the present invention; those of ordinary skill in the art are in equivalent modification and the variation done according to spirit of the present invention, all should be encompassed in the scope that claim of the present invention protects.
Claims (16)
1. a multichannel energy two-way type battery test apparatus, it is characterized in that: comprise isolating transformer, AC/DC converter, DC side Support Capacitor, at least one DC/DC converter and control system, described control system connects respectively described AC/DC converter and described DC/DC converter, described AC/DC converter is connected to described isolating transformer and described DC/DC converter, connects described DC side Support Capacitor between the both positive and negative polarity output of described AC/DC converter.
2. a kind of multichannel energy two-way type battery test apparatus as claimed in claim 1, it is characterized in that: described DC/DC converter comprises a DC converter and the 2nd DC converter, described AC/DC converter connects respectively a described DC converter and described the 2nd DC converter, and described control system connects respectively a described DC converter and described the 2nd DC converter.
3. a kind of multichannel energy two-way type battery test apparatus as claimed in claim 2, it is characterized in that: a described DC converter comprises K switch 1, K switch 2, out put reactor L1 and output filter capacitor C1, after the input of the output of described K switch 1 and described K switch 2 is in parallel, be connected to one end of described out put reactor L1, the other end of described out put reactor L1 is connected to one end of described output filter capacitor C1 and the cathode output end of a described DC converter, the other end of described output filter capacitor C1 is connected to the cathode output end of a described DC converter,
Described the 2nd DC converter comprises K switch 3, K switch 4, out put reactor L2 and output filter capacitor C2, after the input of the output of described K switch 3 and described K switch 4 is in parallel, be connected to one end of described out put reactor L2, the other end of described out put reactor L2 is connected to one end of described output filter capacitor C2 and the cathode output end of described the 2nd DC converter, and the other end of described output filter capacitor C2 is connected to the cathode output end of described the 2nd DC converter;
The positive pole of described AC/DC converter connects respectively the input of described K switch 1 and the input of described K switch 3, the negative pole of described AC/DC converter connects respectively the other end, the output of described K switch 4 and the other end of described output filter capacitor C2 of the output of described K switch 2, described output filter capacitor C1, and described control system connects respectively the control end of described K switch 1, control end, the control end of described K switch 3 and the control end of described K switch 4 of described K switch 2.
4. a kind of multichannel energy two-way type battery test apparatus as claimed in claim 2, it is characterized in that: a described DC converter comprises K switch 13, K switch 14, K switch 15, K switch 16, out put reactor L7, out put reactor L8 and output filter capacitor C7, after the input of the output of described K switch 13 and described K switch 14 is in parallel, be connected to one end of described out put reactor L7, the output of described K switch 15 and the input parallel connection of described K switch 16 are connected one end of described out put reactor L8 afterwards, after described out put reactor L7 is in parallel with described out put reactor L8, be connected to one end of described output filter capacitor C7 and the cathode output end of a described DC converter, the other end of described output filter capacitor C7 is connected to the cathode output end of a described DC converter,
Described the 2nd DC converter comprises K switch 17, K switch 18, K switch 19, K switch 20, out put reactor L9, out put reactor L10 and output filter capacitor C8, the output of described K switch 17 and the input parallel connection of described K switch 18 are connected one end of described out put reactor L9 afterwards, the output of described K switch 19 and the input parallel connection of described K switch 20 are connected one end of described out put reactor L10 afterwards, after described out put reactor L9 is in parallel with described out put reactor L10, be connected to one end of described output filter capacitor C8 and the cathode output end of described the 2nd DC converter, the other end of described output filter capacitor C8 is connected to the cathode output end of described the 2nd DC converter,
The positive pole of described AC/DC converter connects respectively the input of described K switch 13, the input of described K switch 15, the input of the input of described K switch 17 and described K switch 19, the negative pole of described AC/DC converter connects respectively the output of described K switch 14, the output of described K switch 16, the other end of described output filter capacitor C7, the output of described K switch 18, the other end of the output of described K switch 20 and described output filter capacitor C8, described control system connects respectively the control end of described K switch 13, the control end of described K switch 14, the control end of described K switch 15, the control end of described K switch 16, the control end of described K switch 17, the control end of described K switch 18, the control end of the control end of described K switch 19 and described K switch 20.
5. a kind of multichannel energy two-way type battery test apparatus as claimed in claim 2, it is characterized in that: a described DC converter comprises K switch 21, K switch 22, K switch 23, K switch 24, out put reactor L11, out put reactor L12 and output filter capacitor C9, after the input of the output of described K switch 21 and described K switch 22 is in parallel, be connected to one end of described out put reactor L11, the other end of described out put reactor L11 is connected to one end of described output filter capacitor C9 and the cathode output end of a described DC converter, the output of described K switch 23 and the input parallel connection of described K switch 24 are connected one end of described out put reactor L12 afterwards, the other end of described out put reactor L12 is connected to the other end of described output filter capacitor C9 and the cathode output end of a described DC converter,
Described the 2nd DC converter comprises K switch 25, K switch 26, K switch 27, K switch 28, out put reactor L13, out put reactor L14 and output filter capacitor C10, the output of described K switch 25 and the input parallel connection of described K switch 26 are connected one end of described out put reactor L13 afterwards, the other end of described out put reactor L13 is connected to one end of described output filter capacitor C10 and the cathode output end of described the 2nd DC converter, the output of described K switch 27 and the input parallel connection of described K switch 28 are connected one end of described out put reactor L14 afterwards, the other end of described out put reactor L14 is connected to the other end of described output filter capacitor C10 and the cathode output end of described the 2nd DC converter,
The positive pole of described AC/DC converter connects respectively the input of described K switch 21, the input of described K switch 23, the input of the input of described K switch 25 and described K switch 27, the negative pole of described AC/DC converter connects respectively the output of described K switch 22, the output of described K switch 24, the output of the output of described K switch 26 and described K switch 28, described control system is the control end of connecting valve K21 respectively, the control end of K switch 22, the control end of K switch 23, the control end of K switch 24, the control end of K switch 25, the control end of K switch 26, the control end of the control end of K switch 27 and K switch 28.
6. a kind of multichannel energy two-way type battery test apparatus as claimed in claim 2, it is characterized in that: also comprise the first electromagnetic interface filter and the second electromagnetic interface filter, described the first electromagnetic interface filter is connected to a described DC converter, and described the second electromagnetic interface filter is connected to described the 2nd DC converter.
7. a kind of multichannel energy two-way type battery test apparatus as claimed in claim 1, it is characterized in that: described DC/DC converter comprises the 3rd DC converter and the 4th DC converter, the cathode output end of described the 3rd DC converter is connected to the cathode output end of described the 4th DC converter, the cathode output end of described the 3rd DC converter is connected to the cathode output end of described the 4th DC converter, described AC/DC converter connects respectively described the 3rd DC converter and described the 4th DC converter, described control system connects respectively described the 3rd DC converter and described the 4th DC converter.
8. a kind of multichannel energy two-way type battery test apparatus as claimed in claim 7, it is characterized in that: described the 3rd DC converter comprises K switch 5, K switch 6, out put reactor L3 and output filter capacitor C3, after the input of the output of described K switch 5 and described K switch 6 is in parallel, be connected to one end of described out put reactor L3, the other end of described out put reactor L3 is connected to one end of described output filter capacitor C3 and the cathode output end of described the 3rd DC converter, the other end of described output filter capacitor C3 is connected to the cathode output end of described the 3rd DC converter,
Described the 4th DC converter comprises K switch 7, K switch 8, out put reactor L4 and output filter capacitor C4, after the output of described K switch 7 is in parallel with the input of described switch, be connected to one end of described out put reactor L4, the other end of described out put reactor L4 is connected to one end of described output filter capacitor C4 and the cathode output end of described the 4th DC converter, and the other end of described output filter capacitor C4 is connected to the cathode output end of described the 4th DC converter;
The cathode output end of described the 3rd DC converter is connected to the cathode output end of described the 4th DC converter, the cathode output end of described the 3rd DC converter is connected to the cathode output end of described the 4th DC converter, the positive pole of described AC/DC converter connects respectively the input of described K switch 5 and the input of described K switch 7, the negative pole of described AC/DC converter connects respectively the output of described K switch 6, the other end of described output filter capacitor C3, the other end of the output of described K switch 8 and described output filter capacitor C4, described control system connects respectively the control end of described K switch 5, the control end of described K switch 6, the control end of the control end of described K switch 7 and described K switch 8.
9. a kind of multichannel energy two-way type battery test apparatus as claimed in claim 7, it is characterized in that: described the 3rd DC converter comprises K switch 29, K switch 30, K switch 31, K switch 32, out put reactor L15, out put reactor L16 and output filter capacitor C11, after the input of the output of described K switch 29 and described K switch 30 is in parallel, be connected to one end of described out put reactor L15, the other end of described out put reactor L15 is connected to one end of described output filter capacitor C11 and the cathode output end of described the 3rd DC converter, the output of described K switch 31 and the input parallel connection of described K switch 32 are connected one end of described out put reactor L16 afterwards, the other end of described out put reactor L16 is connected to the other end of described output filter capacitor C11 and the cathode output end of described the 3rd DC converter,
Described the 4th DC converter comprises K switch 33, K switch 34, K switch 35, K switch 36, out put reactor L17, out put reactor L18 and output filter capacitor C12, the output of described K switch 33 and described K switch 34 input parallel connections are connected one end of described out put reactor L17 afterwards, the other end of described out put reactor L17 is connected to one end of described output filter capacitor C12 and the cathode output end of described the 4th DC converter, the output of described K switch 35 and the input parallel connection of described K switch 36 are connected one end of described out put reactor L18 afterwards, the other end of described out put reactor L18 is connected to the other end of described output filter capacitor C12 and the cathode output end of described the 4th DC converter,
The cathode output end of described the 3rd DC converter is connected to the cathode output end of described the 4th DC converter, the cathode output end of described the 3rd DC converter is connected to the cathode output end of described the 4th DC converter, the positive pole of described AC/DC converter connects respectively the input of described K switch 29, the input of described K switch 31, the input of the input of described K switch 33 and described K switch 35, the negative pole of described AC/DC converter connects respectively the output of described K switch 30, the output of described K switch 32, the output of the output of described K switch 34 and described K switch 36, described control system connects respectively the control end of described K switch 29, the control end of described K switch 30, the control end of described K switch 31, the control end of described K switch 32, the control end of described K switch 33, the control end of described K switch 34, the control end of the control end of described K switch 35 and described K switch 36.
10. a kind of multichannel energy two-way type battery test apparatus as claimed in claim 7, is characterized in that: also comprise the 3rd electromagnetic interface filter, described the 3rd electromagnetic interface filter connects respectively described the 3rd DC converter and described the 4th DC converter.
11. a kind of multichannel energy two-way type battery test apparatus as claimed in claim 1, it is characterized in that: described DC/DC converter comprises the 5th DC converter and the 6th DC converter, described the 5th DC converter only has cathode output end, described the 6th DC converter only has AC/DC converter described in cathode output end to connect respectively described the 5th DC converter and described the 6th DC converter, and described control system connects respectively described the 5th DC converter and described the 6th DC converter.
12. a kind of multichannel energy two-way type battery test apparatus as claimed in claim 11, it is characterized in that: described the 5th DC converter comprises K switch 9, K switch 10, out put reactor L5 and output filter capacitor C5, the one end that is connected to described out put reactor L5 after the input of the output of described K switch 9 and described K switch 10 is in parallel, the other end of described out put reactor L5 is connected to one end of described output filter capacitor C5 and the cathode output end of described the 5th DC converter;
Described the 6th DC converter comprises K switch 11, K switch 12, out put reactor L16 and output filter capacitor C6, the one end that is connected to described out put reactor L6 after the input of the output of described K switch 11 and described K switch 12 is in parallel, the other end of described out put reactor L6 is connected to one end of described output filter capacitor C6 and the cathode output end of described the 6th DC converter;
The positive pole of described AC/DC converter connects respectively the input of described K switch 9 and the input of described K switch 11, the negative pole of described AC/DC converter connects respectively the other end, the output of described K switch 12 and the other end of described output filter capacitor C6 of the output of described K switch 10, described output filter capacitor C5, and described control system connects respectively the control end of described K switch 9, control end, the control end of described K switch 11 and the control end of described K switch 12 of described K switch 10.
13. a kind of multichannel energy two-way type battery test apparatus as claimed in claim 4, it is characterized in that: also comprise the 4th electromagnetic interface filter, the electrode input end of described the 4th electromagnetic interface filter is connected to the cathode output end of described the 5th DC converter, and the negative input of described the 4th electromagnetic interface filter is connected to the cathode output end of described the 6th DC converter.
14. a kind of multichannel energy two-way type battery test apparatus as claimed in claim 1, is characterized in that: described isolating transformer structure is star/triangle form or star/star formula.
15. as claim 3, 4, 5, 8, a kind of multichannel energy two-way type battery test apparatus described in 9 or 12, it is characterized in that: described K switch 1, described K switch 2, described K switch 3, described K switch 4, described K switch 5, described K switch 6, described K switch 7, described K switch 8, described K switch 9, described K switch 10, described K switch 11, described K switch 12, described K switch 13, described K switch 14, described K switch 15, described K switch 16, described K switch 17, described K switch 18, described K switch 19, described K switch 20, described K switch 21, described K switch 22, described K switch 23, described K switch 24, described K switch 25, described K switch 26, described K switch 27, described K switch 28, described K switch 29, described K switch 30, described K switch 31, described K switch 32, described K switch 33, described K switch 34, described K switch 35 and described K switch 36 are power transistor.
16. a kind of multichannel energy two-way type battery test apparatus as claimed in claim 15, is characterized in that: described power transistor is IGBT or BJT or MOSFET.
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Address after: 350000 Productivity Promotion Center, No. 8, star hair Road, Mawei District, Fujian, Fuzhou 3, 304 Applicant after: FUJIAN NEBULA ELECTRONICS CO., LTD. Address before: 350000 Productivity Promotion Center, 8 star road, Mawei District, Fujian, Fuzhou 3, China, 304 Applicant before: Fuzhou Development Zone Xingyun Electronic Automation Co., Ltd. |
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Application publication date: 20140521 |