CN101860051A - Charge/discharge test device for distributed full online storage battery pack - Google Patents
Charge/discharge test device for distributed full online storage battery pack Download PDFInfo
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- CN101860051A CN101860051A CN 201010162705 CN201010162705A CN101860051A CN 101860051 A CN101860051 A CN 101860051A CN 201010162705 CN201010162705 CN 201010162705 CN 201010162705 A CN201010162705 A CN 201010162705A CN 101860051 A CN101860051 A CN 101860051A
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Abstract
The invention provides a charge/discharge test device for a distributed full online storage battery pack, which comprises a DC-DC host machine work power supply, a control unit, a storage battery pack online test switch, a second safety protection circuit, a storage battery pack online test switch control circuit, a positive and negative polarity change-over switch, and a safety protection circuit, an automatic current-limiting charge and equipotential connection safety control circuit mutually connected in series and a DC-DC converter and a constant current discharge load intelligent control circuit and a discharge load circuit mutually connected in series. The invention as a group or groups or storage battery packs is performed with charge/discharge maintenance test gradually to implement the function of online storage battery pack to discharge the communication device load safely and with energy conservation and to assist the constant current discharge load intelligent control circuit to adjust the discharge load current and the invention has the function of intelligence, simple operation and safety and energy conservation.
Description
[technical field]
The present invention relates to power-source maintenance equipment in the communication network, particularly relates to a kind of charge/discharge test device for distributed full online storage battery pack.
[background technology]
The communications industry has wireless base station power supply backup battery maintenance management now, because of the many scales of wireless base station quantity big, maintenance work labour intensity height, the cost height, have a big risk, the maintenance work task is heavy, and the problem that wastes energy, cause the maintenance work of most battery capacity discharge test to fail to implement completely, cause the actual capacity of radio communication base station backup battery group is not understood, emergency guarantee power supply duration is unclear, often interrupt to carry out the emergency power generation dispatching management effectively because of civil power, often cause the generation of wireless base station communication disruption accident, storage battery is scrapped in advance, and these problems are perplexing whole communications industry power-source maintenance management work person and concrete maintenance staff always.
For realizing the complete online unattended intelligent monitoring management of radio communication base station power supply backup battery group, automatically finish the volume test of online accumulator cell charging and discharging by remote monitoring, in time control the data of all online battery capacities of existing network and guarantee power supply duration, reduce attendant's labour intensity, reduce the maintenance cost spending, improve network running quality and whole maintenance work efficient, promote the integrated maintenance managerial skills of network security operation, take scientific and effective maintenance management technology, prolong batteries useful life, realize that the online batteries charge/discharge capacity of the whole network detects and the automatic maintenance management of system automatically.
[summary of the invention]
The major technology problem that the present invention will solve, be to provide a kind of complete online batteries device systems, realize that online batteries discharges and recharges and assist constant current charge-discharge load Based Intelligent Control to regulate the function that discharges and recharges load current to communication equipment load energy-saving safe, it has the function of intelligence, easy and simple to handle and energy-saving safe.
The present invention is achieved in that a DC-DC host work power supply, one control unit, one batteries on-line testing diverter switch, second safety protective circuit, a batteries on-line testing conversion control circuit, one positive-negative polarity change over switch, a safety protective circuit connected with each other, an automatic current limiting charging and equipotential attachment security control circuit, a DC-DC converter, and the constant-current discharge load intelligence control circuit and the discharge load circuit that are connected in series mutually; Described control unit further comprises a MCU unit and a current/voltage data acquisition that all is connected with this MCU unit and conversion control circuit, batteries monomer voltage checkout equipment, data storage, telecommunication circuit again, LCD shows and the keyboard input; The input of described positive-negative polarity change over switch is connected to described safety protective circuit, automatic current limiting charging and equipotential attachment security control circuit, DC-DC converter, exports and connect the two ends of the output of batteries on-line testing diverter switch; Described batteries on-line testing conversion control circuit is connected with batteries on-line testing diverter switch, MCU unit and DC-DC host work power supply respectively; The corresponding input parallel connection of the input of described batteries on-line testing diverter switch and second safety protective circuit is connected in online batteries again; A batteries on-line testing diverter switch wherein output is connected with the output of second safety protective circuit, another output and safety protective circuit, automatic current limiting charging and equipotential attachment security control circuit, DC-DC converter and an end that connects are connected, and are connected with an end of described constant-current discharge load intelligence control circuit; The output of DC-DC host work power supply is connected with described constant-current discharge load intelligence control circuit, described control unit in the described equipment; Described DC-DC converter is connected with described current/voltage data acquisition and conversion control circuit and MCU unit respectively; Described MCU unit also is connected with described constant-current discharge load intelligence control circuit, automatic current limiting charging and equipotential attachment security control circuit, positive-negative polarity change over switch, batteries on-line testing diverter switch, second safety protective circuit, batteries on-line testing conversion control circuit respectively; The input of DC-DC host work power supply is connected in the two ends of online communication working power in the described equipment, and the operate as normal power supply is provided.
Preferable; also comprise the forward and reverse polarity work of power supply protective circuit; the input of the forward and reverse polarity work of this power supply protective circuit is connected with the positive-negative polarity change over switch with described batteries on-line testing diverter switch respectively, and output is connected with described constant-current discharge load intelligence control circuit, DC-DC converter respectively.Or described DC-DC converter, described constant-current discharge load intelligence control circuit all have the characteristics of forward and reverse polarity power work.
Preferable, technique scheme also comprises an AC/DC Switching Power Supply, and described DC-DC host work power supply is the DC-DC power supply, and the output of this AC/DC Switching Power Supply is connected described DC-DC host work power supply and civil power respectively with input.
Preferable, technique scheme also comprises at least one current detection circuit, can be a current sensor, described each current detection circuit is coupled in this equipment and monitors each input that discharges and recharges working power of described online batteries, detects charging, the discharging current of online batteries for charge/discharge test device for distributed full online storage battery pack.
Preferable; described second safety protective circuit comprises that a great power bidirectional power supply static switch pipe, a direct current contactor or appliance switch and are used to control and protect the automatic protection circuit of this great power bidirectional power supply static switch pipe and D.C. contactor or appliance switch work, and described great power bidirectional power supply static switch pipe and D.C. contactor or appliance switch are connected in parallel.
Preferable, if described batteries on-line testing diverter switch has the make-before-break function, then described second safety protective circuit only need comprise a great power bidirectional power supply static switch pipe, be used to control and protect the automatic protection circuit of this great power bidirectional power supply static switch plumber work, and can omit D.C. contactor or appliance switch; Because of batteries on-line testing diverter switch has the make-before-break function, can all be in online power supply safety state to the handoff procedure of online charge-discharge test state of online batteries and online non-test mode, its safety protection function is constant, and reliability is more excellent.
The invention has the advantages that:
1, the design of this charge/discharge test device for distributed full online storage battery pack and application, voltage with online communication power supply and backup battery group two ends is the input service power supply of this testing equipment, satisfy battery discharging characteristic, related communication power supply operation maintenance norm standard and batteries maintenance test requirement, discharge examination is complete online and safeguarded the discharge energy-saving safe.
2, the design of this charge/discharge test device for distributed full online storage battery pack system and application have online batteries to communication equipment load energy-saving safe discharging function and on-line intelligence load constant-current discharge function.Satisfy simultaneously under the situation of online various different communication machine utilization electric currents, the constant-current discharge volume test that all can realize online batteries is applicable to that the different various communication equipments of the existing network power supply backup battery groups of loading carry out online constant-current discharge and test.
3, charge/discharge test device for distributed full online storage battery pack possesses discharge of online communication device energy conservation and online load discharge function, and comprehensive strong, the scope of application is extensive.
4, charge/discharge test device for distributed full online storage battery pack has positive-negative power polarity switch selection conversion and control function, satisfying the online constant-current discharge test of batteries of different positive and negative communication power supplies uses, intelligent degree height, function is strong, uses flexible safety.
5, pass through seamless link technology, be connected in series with tested battery pack, guarantee that tested batteries is in safe presence all the time, do not influence normal safe power supply, realize that tested batteries is online to actual load discharge and on-line intelligence load discharge with the discharge parameter of testing equipment setting communication system equipment.
6, when online communication equipment actual load, when satisfying tested batteries constant-current discharge, this device systems is closed online intelligent load discharge automatically; When online communication equipment actual load does not satisfy tested batteries constant-current discharge, this device systems will be controlled online intelligent load constant-current discharge automatically, realize the online constant-current discharge volume test of tested batteries purpose.
7, finish after the discharge capacity test, control automatically by testing equipment by online rectifier output power supply and carry out online current-limiting charge, and finish the connection of equipotential safety.
8, use intelligent dummy load to carry out the off-line test contrast with tradition, solved off-line discharge operation, power supply effectively and recovered online overall process maintenance test security hidden trouble, had energy-conservation, easy to operate and safe, online power supply safety, EOT and carry out advantages such as online charging and the connection of recovery equipotential automatically.
9,, and have energy-conservation discharge test function of batteries safety on line and online constant current intelligent load discharge test function with advanced online " batteries discharge test device " contrast.Satisfy the batteries constant-current discharge test of the various communication equipment load of existing network, practical more, and possess energy-saving safe discharge test function.
10, online detection of cell and alarm defencive function adopt wireless voltage test and management system of monomer or the wired voltage tester management system of monomer in " equipment " circuit design, safeguard that detecting operation is easy, improve system maintenance work safety.
11, the output of this complete online batteries instrumentation system has voltage stabilizing current limliting, current stabilization pressure limiting control defencive function; and output overcurrent, overvoltage protection and overvoltage shutdown defencive function, possess online discharge capacity detection of communication backup battery group and safe power supply protection characteristics.
12, this complete online batteries instrumentation system possesses attended operation, parameter is provided with simply, intelligent degree height, characteristics such as defencive function is strong, this complete online battery power discharge test macro operation interface close friend, operate according to system prompt, can finish the online battery capacity of communication and detect, and preserve data automatically, so that maintenance analysis and management;
13, the control system of this complete online battery power discharge test macro MCU unit is provided with one the tunnel and exchanges backup battery, so that consult, read, copy test data in good time, and the historical events record;
14, the control system of the MCU unit of this complete online battery power discharge test macro output has standard data interface, and USB interface and IP network interface, and is flexible and convenient to use.
[description of drawings]
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the theory structure block diagram of the embodiment one of charge/discharge test device for distributed full online storage battery pack of the present invention.
Fig. 2 is the theory structure block diagram of the embodiment two of charge/discharge test device for distributed full online storage battery pack of the present invention.
Fig. 3 is the theory structure block diagram of the embodiment three of charge/discharge test device for distributed full online storage battery pack of the present invention.
Fig. 4 is the theory structure block diagram of the embodiment four of charge/discharge test device for distributed full online storage battery pack of the present invention.
Fig. 5 is embodiment one, embodiment three and embodiment four and-48V power supply system for communications seamless link operation chart.
Fig. 6 is embodiment one, embodiment three and embodiment four and-48V power supply system for communications equipment wiring schematic diagram.
Fig. 7 is embodiment two, embodiment three and embodiment four and+24V power supply system for communications equipment wiring schematic diagram.
Fig. 8 is that embodiment one and embodiment three are applied to-theory structure block diagram during the 48V power supply system for communications under the online discharge condition, wherein omits the control unit part.
Fig. 9 is that embodiment one and embodiment three are applied to-theory structure block diagram during the 48V power supply system for communications under the online charged state, wherein omits the control unit part.
Figure 10 is that embodiment four is applied to-theory structure block diagram during the 48V power supply system for communications under the online discharge condition, wherein omits the control unit part.
Figure 11 is that embodiment four is applied to-theory structure block diagram during the 48V power supply system for communications under the online charged state, wherein omits the control unit part.
[embodiment]
Charge/discharge test device for distributed full online storage battery pack of the present invention is to be applied to a kind of complete online batteries device systems, and described complete online batteries device systems also comprises a tested batteries and a communication equipment usually.This communication equipment is by the power supply power supply in support of this batteries.
Now for following 4 embodiment, and its operation principle is described.
Embodiment one
See also shown in Figure 1; a kind of charge/discharge test device for distributed full online storage battery pack comprises: a DC-DC host work power supply 1, a control unit 2, a safety protective circuit 3, an automatic current limiting charging and equipotential attachment security control circuit 4, a constant-current discharge load intelligence control circuit 5, a discharge load circuit 6, second safety protective circuit 10, a positive-negative polarity change over switch 11, a DC-DC converter 12, one batteries on-line testing diverter switches 13 and a batteries on-line testing conversion control circuit 14.Described control unit 2 further comprises a MCU unit 21 and a current/voltage data acquisition that all is connected with this MCU unit 21 and conversion control circuit 22, batteries monomer voltage checkout equipment 23, data storage 24, telecommunication circuit 25 again, LCD shows and keyboard input 26;
Described safety protective circuit 3, automatic current limiting charging and equipotential attachment security control circuit 4, DC-DC converter 12 are connected with each other, itself and the two ends that connect are respectively D+1 end and D-1 end, and the positive and negative electrode of described safety protective circuit 3 connects D+1 end and D-1 end respectively, and described constant-current discharge load intelligence control circuit 5 and discharge load circuit 6 are connected in series mutually;
Described positive-negative polarity change over switch 11 inputs are connected to safety protective circuit 3, automatic current limiting charging and equipotential attachment security control circuit 4, DC-DC converter 12, export and connect the two ends of the output of batteries on-line testing diverter switch 13;
After the corresponding input parallel connection of the input of described batteries on-line testing diverter switch 13 and second safety protective circuit 10, be connected in online batteries; And this batteries on-line testing diverter switch 13 a wherein output is connected with the output of second safety protective circuit 10, another output is connected with safety protective circuit 3, automatic current limiting charging and equipotential attachment security control circuit 4, DC-DC converter 12 and the end that connects, and is connected with an end of constant-current discharge load intelligence control circuit 5;
The output of DC-DC host work power supply 1 is connected with described constant-current discharge load intelligence control circuit 5, described batteries on-line testing conversion control circuit 14 and described control unit 2 in the described equipment, one of input two ends of DC-DC host work power supply 1 end is connected with the output of the described batteries on-line testing diverter switch 13 parallel with one another and second safety protective circuit 10, and the other end is connected with public power one end of described DC-DC converter 12, discharge load circuit 6;
Described DC-DC converter 12 is connected with described current/voltage data acquisition and conversion control circuit 22 and MCU unit 21 respectively; Described MCU unit 21 also is connected with described constant-current discharge load intelligence control circuit 5, automatic current limiting charging and equipotential attachment security control circuit 4, positive-negative polarity change over switch 11, batteries on-line testing diverter switch 13, second safety protective circuit 10, batteries on-line testing conversion control circuit 10 respectively;
Described tested batteries is connected to DC-DC converter 12 in parallel by the output of batteries on-line testing diverter switch 13, and the input of constant-current discharge load intelligence control circuit 5, and complete machine operate as normal power supply is provided; The input two ends of DC-DC host work power supply 1 are connected in the two ends of the power supply that works online in the described equipment, for main frame operate as normal power supply is provided.
The function of above-mentioned each circuit module is expressed as follows:
Described DC-DC host work power supply 1: for described constant-current discharge load intelligence control circuit 5, described control unit 2 provide working power;
Described control unit 2: this circuit module is a control model with the system program directive of MCU unit 21, with control constant-current discharge load intelligence control circuit 5, automatic current limiting charging and equipotential attachment security control circuit 4;
Described safety protective circuit 3: can be a heavy-duty diode, when tested batteries is carried out the on-line testing operating state, its heavy-duty diode is connected in series between the DC distributor of communication storage battery group and power supply system for communications equipment through positive-negative polarity change over switch 11 and batteries on-line testing diverter switch 13, guarantee that tested batteries is in safe presence all the time, do not influence normal safe power supply to communication system equipment, the negative pole of this heavy-duty diode connects the D+1 end, and positive pole connects the D-1 end;
Described automatic current limiting charging and equipotential attachment security control circuit 4: after finishing tested batteries discharge test end, carry out online current-limiting charge automatically, and carry out the connection of equipotential safety and recover tested batteries to online operate as normal;
Described constant-current discharge load intelligence control circuit 5:, finish control and test that tested batteries is carried out online dummy load constant-current discharge automatically according to the parameter that is provided with of discharge equipment system;
Described discharge load circuit 6: the operating circuit that allows to pass through the discharge load electric current by the tested batteries of constant-current discharge load intelligence control circuit 5 controls;
Described second safety protective circuit 10: comprise that a great power bidirectional power supply static switch pipe, a direct current contactor and are used to control and protect the automatic protection circuit (all not shown) of this great power bidirectional power supply static switch pipe and D.C. contactor work, and described great power bidirectional power supply static switch pipe and D.C. contactor are connected in parallel.This second safety protective circuit 10 guarantees all can the uninterrupted safe power supply of real-time online in tested battery charging or the discharge test process.Simultaneously also be to finish to discharge and recharge conversion and control and finish one of main circuit that equipotential is connected.
Described positive-negative polarity change over switch 11:, be applicable to charging, the discharge test control transformation of the positive and negative different online batteries of communication power supply for connecting the selective switchgear of positive and negative working power polarity.
Described DC-DC converter 12: be a hf switching power supply, its output voltage, electric current have constant current pressure limiting, voltage stabilizing current limliting, the automatic protection function of high reliability such as overvoltage, overcurrent, short circuit simultaneously for adjustable continuously.
Described batteries on-line testing diverter switch 13: (it is that tested batteries is in complete online charge-discharge test state that tested batteries connects " on-line testing " end with switching the execution switch that places " on-line testing " or " online non-test " connection operating state being connected of output for the batteries that works online is carried out; It is that tested batteries is in complete online connection status that tested batteries connects " online non-test " end, do not lie in complete online charge-discharge test operating state), if described batteries on-line testing diverter switch 13 has the make-before-break function, 10 need of then described second safety protective circuit comprise a great power bidirectional power supply static switch pipe, are used to control and protect the automatic protection circuit of this great power bidirectional power supply static switch plumber work, and can omit D.C. contactor or appliance switch; Because of batteries on-line testing diverter switch 13 has the make-before-break function; can all be in online power supply safety state to the handoff procedure that online batteries is thrown " on-line testing " state and " online non-test " state automatically into; its safety protection function is constant, and reliability is more excellent.。
Described batteries on-line testing conversion control circuit 14: for the batteries that the execution of drive controlling batteries on-line testing diverter switch 13 is selected to work online is switched the crucial control circuit that places " on-line testing " or " online non-test " connection operating state.
Present embodiment also can comprise an AC/DC Switching Power Supply 7 and N current detection circuit 8, the output of this AC/DC Switching Power Supply 7 is connected described DC-DC host work power supply 1 and civil power respectively with input, in order to civil power is introduced with the interchange input power supply as host power supply; Described current detection circuit 8 can be a current sensor, described current detection circuit 8 connects each terminals of described discharging test device for full online storage battery, detects charging, the discharging current of online tested batteries for discharging test device for full online storage battery.
Refer again to Fig. 1, it is easy to connect when the charge/discharge test device for distributed full online storage battery pack of present embodiment is used, a power supply output line is drawn in the input that connects described discharge load circuit 6, DC-DC converter 12, described DC-DC host work power supply 1, have the first binding post A; Draw a power supply output line on second safety protective circuit, 10 1 contacts that batteries on-line testing diverter switch 13 correspondences are connected in parallel again, in equipment, be connected with the second binding post B through current detection circuit 8, has the second binding post B, promptly with the binding post B1～BN of online batteries one end (N specifically can according to the configuration of actual user's demand, according to communication power supply design specification multiple-connected battery group number configuration N≤4); On the common point of power positive cathode change over switch 11, second safety protective circuit 10 and the batteries on-line testing diverter switch 13 that will and connect, DC-DC host work power supply 1, draw a power supply output line again, have the 3rd binding post D.
Refer again to Fig. 1; described DC-DC converter 12; automatic current limiting is charged and is recovered equipotential attachment security control protection electric circuit 4 certainly; safety protective circuit 3 also connects output and has 2 positive and negative wiring public terminals (anodal D+1 end; negative pole D-1 end) is connected in power positive cathode change over switch 11; wherein corresponding DC-DC converter 12; DC-DC host work power supply 1; described constant-current discharge load intelligence control circuit 5 power supplys such as input service such as grade just; the negative terminal and the first binding post A; second binding post B1～BN; the 3rd binding post D positive and negative needs corresponding the connection, to adapt to-the online battery charging of 48V power supply system for communications equipment; the discharge maintenance test equipment.In conjunction with shown in Figure 5, its first binding post A is that negative pole connects the batteries power end negative pole that works online, the second binding post B is that positive pole is connected on line batteries power positive end (positive terminal on former online storage battery winding power work ground), and the 3rd binding post D is that positive pole is connected on line power work ground (in the 48V power supply system for communications equipment-the anodal busbar of 48V direct current cabinet);
Embodiment two
As shown in Figure 2; present embodiment two is basic identical with the structure of the foregoing description one; the difference of the two is: described DC-DC converter 12, automatic current limiting charging and recover equipotential attachment security control protection electric circuit 4, safety protective circuit 3 certainly and the output that connects to be connected in 2 positive and negative wiring public terminals of input (anodal D+1 end, negative pole D-1 end) of power positive cathode change over switch 11 opposite with corresponding terminal polarity among the embodiment one.All the other structures can be consulted the description in the foregoing description one, no longer repeat herein.
Please refer to Fig. 6, the first binding post A of present embodiment two is that positive pole connects the batteries power end positive pole that works online, the second binding post B is that negative pole is connected on line batteries power-extreme (negative pole end on former online storage battery winding power work ground), the 3rd binding post D is that negative pole is connected on line power work ground (in+24V power supply system for communications equipment+24V direct current cabinet cathode bus bar) and embodiment one positive-negative polarity opposite states, the online battery charging of adaptation+24V power supply system for communications equipment, discharge maintenance test, all the other are all identical.
Embodiment three
As shown in Figure 3, the charge/discharge test device for distributed full online storage battery pack of present embodiment three is identical with structure and the binding post of the foregoing description one, embodiment two, difference is: in present embodiment three, described DC-DC converter 12, DC-DC host work power supply 1, described constant-current discharge load intelligence control circuit 5 all have the characteristics of forward and reverse polarity power work.Can realize mode of operation with best safety, be applicable to the charge and discharge maintenance test of the online batteries of communication power supply that difference is positive and negative simultaneously, and it is identical with the work connected mode of the above embodiments one and embodiment two, no matter working power is positive pole or minus earth, when this equipment carries out the on-line maintenance test, the power work earth terminal that only needs operation batteries side to connect, the risk of having avoided operation to bump ground short circuit, and have online batteries constant current pressure limiting charging and voltage stabilizing current-limiting charge maintenance function, maintenance test is used more flexible, safe and simple.
Therefore present embodiment three has two kinds of functions of embodiment one and embodiment two simultaneously; to and the DC-DC converter 12 that connects; automatic current limiting is charged and is recovered equipotential attachment security control protection electric circuit 4 certainly; 2 wiring public terminals of the both positive and negative polarity of safety protective circuit 3 (anodal D+1 end; negative pole D-1 end) is connected with two kinds of power positive cathode change over switch 11; to have automatic identification just online because of this charge/discharge test device for distributed full online storage battery pack; negative working power and diagnosis control defencive function; and the positive-negative polarity conversion that can finish control power positive cathode change over switch 11 is automatically exported; realization is to the automatic control transformation of the charging and the discharge of tested batteries, so can just be adaptive to simultaneously; online communication battery charging in negative two kinds of communication DC power-supply system equipment; the use of discharge maintenance test.Fig. 3 and Fig. 1, Fig. 2 show state are identical, can consult the description among the embodiment one, no longer repeat herein;
Embodiment four
See also Fig. 4; present embodiment four is a kind of conversion to embodiment three; it is compared with embodiment three; the difference of the two is: the charge/discharge test device for distributed full online storage battery pack of present embodiment four also comprises the forward and reverse polarity work of power supply protective circuit 9; the input of the forward and reverse polarity work of this power supply protective circuit 9 is connected with positive-negative polarity change over switch 11 with described batteries on-line testing diverter switch 13 respectively; output and DC-DC converter 12; the constant-current discharge load intelligence control circuit 5 of described serial connection is connected with discharge load circuit 6, and all the other structures are all identical with embodiment three.
Illustrate: the forward and reverse polarity work of the input power supply protective circuit function that is distributed in described DC-DC converter 12, DC-DC host work power supply 1, constant-current discharge load intelligence control circuit 5 among the embodiment three, and embodiment four will supply with DC- DC converter 12,5 two functional modules of constant-current discharge load intelligence control circuit by the output of the forward and reverse polarity work of power supply protective circuit 9.Therefore, above-mentioned these two embodiment have identical functions, be adapted to equally-48V and+work and the application of two kinds of power supply system for communications equipment of 24V.
Refer again to Fig. 4, it is easy to connect when the charge/discharge test device for distributed full online storage battery pack of present embodiment is used, a power supply output line is drawn in the input that connects the forward and reverse polarity work of described power supply protective circuit 9, described DC-DC host work power supply 1, have the first binding post A; Draw a power supply output line on second safety protective circuit, 10 1 contacts that batteries on-line testing diverter switch 13 correspondences are connected in parallel again, in equipment, be connected with the second binding post B through current detecting 8, has the second binding post B, promptly with the binding post B1～BN of online batteries one end (N specifically can according to the configuration of actual user's demand, according to communication power supply design specification multiple-connected battery group number configuration N≤4); On the common point of power positive cathode change over switch 11, second safety protective circuit 10 and the batteries on-line testing diverter switch 13 that will and connect, DC-DC host work power supply 1, draw a power supply output line again, have the 3rd binding post D.
As shown in Figure 5 and Figure 6, be embodiment one and implement three and embodiment four and-48V power supply system for communications equipment wiring schematic diagram.The input wires terminal that connects this charge/discharge test device for distributed full online storage battery pack by tested batteries promptly the first binding post A (negative pole) and the second binding post B (positive pole) as the working power of battery pack on-line testing equipment.Its output wiring terminal is that the 3rd binding post D (positive pole) and the second binding post B two ends are serially connected between tested batteries and the online communication equipment work power supply, and the positive pole that the 3rd binding post D is connected in communication power supply device systems DC distributor compiles row.-48V power work ground is plus earth, menu according to charge/discharge test device for distributed full online storage battery pack MCU unit 21 is selected, parameter is provided with, the output positive-negative polarity of automatic control power supply positive-negative polarity change over switch 11 is changed and is connected with the output of DC-DC converter 12, finish and select tested batteries to be in online charge or discharge operating state, selecting the batteries on-line testing diverter switch 13 of the tested batteries of control to export " on-line testing " to once more holds once power positive cathode change over switch 11 and is connected in DC-DC converter 12, the output of finishing DC-DC converter 12 is serially connected with between tested batteries and the power supply system for communications equipment, output voltage (binding post B by the control DC-DC of charge/discharge test device for distributed full online storage battery pack system converter 12, the D both end voltage), play the complete online charge and discharge test purpose of batteries.In addition, two tested batteries export " on-line testing " end to through batteries on-line testing diverter switch 13 and are connected in described constant-current discharge load intelligence control circuit 5, make tested batteries and the described constant-current discharge load intelligence control circuit 5 that is connected in series, 6 parallel connections of discharge load circuit, when working as the online constant-current discharge of this tested batteries, by this charge/discharge test device for distributed full online storage battery pack system, according to tested batteries to the size (being communication equipment load current size) of online communication equipment load discharge electric current control the operating current that constant-current discharge load intelligence control circuit 5 carries out auxiliary adjustment control discharge load 6 automatically, guarantee the online constant-current discharge of tested batteries.
As shown in Figure 5, be embodiment one and embodiment three and embodiment four and-48V power supply system for communications seamless link operation chart.
During use, discharging test device for full online storage battery is connected in series between the DC distributor of communication storage battery group and power supply system for communications equipment by " equipment " seamless link technology, guarantee that batteries is in the state that works online safely all the time, does not influence the normal safe power supply to communication system equipment.The input service power supply of discharging test device for full online storage battery is provided by tested batteries power supply.In the operating process, batteries is only torn positive battery terminal (power work ground wire) open, promptly and the positive pole of rectifier power supply power supply compile between line and be connected in series safety simple to operate.
The operating process of online seamless link technology is as described below: the complete online seamless link operation of the batteries equipment of the power supply system for communications, charge/discharge test device for distributed full online storage battery pack is connected in series on the negative or positive electrode of online batteries (power work ground wire), promptly and rectifier, the negative or positive electrode of the power supply of load equipment compiles between line and is connected in series, the access of charge/discharge test device for distributed full online storage battery pack should observe " connect three earlier; after tear one open " principle, the battery power discharge testing equipment is finished test and is withdrawed from when serving, should observe the principle of " connect earlier, then tear three open ".See also Fig. 5, with-the tested batteries of 48V communication power supply is an example, " connect three earlier; after tear one open " be: the power supply output line L1 that connects charge/discharge test device for distributed full online storage battery pack earlier, L2, L3, be about to the binding post B of this testing equipment, A, D is connected to batteries positive pole (being the binding post that former batteries connects power work ground) binding post B respectively, negative terminals or DC distributor output one along separate routes A1 and-48V communication power supply power supply positive pole compiles row GD, after tear the former electric power connection line L5 of tested batteries positive terminal open, disconnect promptly that the sub-C1 of batteries positive terminal and the power supply of-48V communication power supply are anodal to compile being connected of row GD; " connect one earlier; after tear three open " be: tested batteries is finished test, and carry out current-limiting charge automatically and withdraw from service from being dynamically connected to equipotential, should meet the former electric power connection line L5 of tested batteries positive terminal C1 earlier, after tear C1 end power line L1, A1 end power line L2 and GD end power line L3 open.
Again as shown in Figure 7, be embodiment two, embodiment three and embodiment four and+24V power supply system for communications equipment wiring schematic diagram.The input wires terminal that connects this charge/discharge test device for distributed full online storage battery pack by tested batteries promptly the first binding post A (positive pole) and the second binding post B (negative pole) as the working power of battery pack on-line testing equipment.Its 3rd binding post D (negative pole) is connected in series between online batteries and the online communication equipment work power supply with the second binding post B, and the negative pole that the 3rd binding post D is connected in communication power supply device systems DC distributor compiles row.+ 24V power work ground is minus earth, menu according to charge/discharge test device for distributed full online storage battery pack MCU unit 21 is selected, parameter is provided with, the output positive-negative polarity conversion of automatic control power supply positive-negative polarity change over switch 11, input also is connected with the output of DC-DC converter 12, automatically select tested batteries to be in online charge or discharge operating state, selecting the batteries on-line testing diverter switch 13 of the tested batteries of control to export " on-line testing " to once more holds once power positive cathode change over switch 11 and is connected in DC-DC converter 12, the output of finishing DC-DC converter 12 is serially connected with between tested batteries and the power supply system for communications equipment, output voltage (the second and the 3rd binding post B by the control DC-DC of charge/discharge test device for distributed full online storage battery pack system converter 12, the D both end voltage), play the complete online charge and discharge test purpose of battery pack.In addition, two tested batteries export " on-line testing " end to through batteries on-line testing diverter switch 13 and are connected in described constant-current discharge load intelligence control circuit 5, make tested batteries and the described constant-current discharge load intelligence control circuit 5 that is connected in series, 6 parallel connections of discharge load circuit, when working as the online constant-current discharge of this tested batteries, by this charge/discharge test device for distributed full online storage battery pack system, according to tested batteries to the size (being communication equipment load current size) of online communication equipment load discharge electric current control the operating current that constant-current discharge load intelligence control circuit 5 carries out auxiliary adjustment control discharge load 6 automatically, guarantee the online constant-current discharge of tested batteries.
In conjunction with Fig. 8 to Fig. 9, below with-the online charge/discharge capacity test job of 48V communication power supply backup battery group principle is an example, and the application operation principle of embodiment one and embodiment three is described.
Selecting wherein now, the tested batteries I of one group-48V carries out online capacity discharge test, tested batteries I as shown in Figure 8 carries out online discharge capacity test, be somebody's turn to do mode artificial, automatic or remote monitoring control, MCU unit program control output one command signal by charge/discharge test device for distributed full online storage battery pack is passed through batteries on-line testing conversion control circuit drive controlling batteries on-line testing diverter switch, selects a tested batteries I to carry out online discharge capacity test.This tested batteries I makes tested batteries be in " on-line testing " operating state through the switching output of batteries on-line testing diverter switch 13.The anodal B1 end that connects of tested batteries I is put " on-line testing " operating state through the output of batteries on-line testing diverter switch 13, one is connected to D-1 via 11 conductings of power positive cathode change over switch holds (the 3rd binding post D conducting is connected to the D+1 end), and two provide working power for the constant-current discharge load intelligence control circuit 5 and the discharge load circuit 5 of described DC-DC converter 12, described serial connection.Be serially connected with the B1 port of charge/discharge test device for distributed full online storage battery pack in this tested batteries I positive pole, connect through batteries on-line testing diverter switch, make tested batteries I power supply and constant-current discharge load intelligence control circuit, discharge load circuit (being constant-current discharge load and intelligence control system circuit) series arm is finished and is connected in parallel, be serially connected with the B1 port of charge/discharge test device for distributed full online storage battery pack in this two batteries positive pole, output connection power positive cathode change over switch 11 conductings through batteries on-line testing diverter switch 13 are connected in D-1 end and safety circuit 3 parallel with one another, 12 outputs of DC-DC converter, automatic current limiting charging and 4 series connection of equipotential attachment security control circuit, export and connect the D+1 end and be connected to the 3rd binding post D, finish output with DC-DC converter 12 be serially connected with tested tested batteries I and-48V power supply system for communications DC distributor between, output voltage (the second and the 3rd binding post B by the control DC-DC of charge/discharge test device for distributed full online storage battery pack system converter 12, the D both end voltage), make tested batteries I be in online capacity discharge or online charge maintenance test job state, other batteries connect through the input conducting of batteries on-line testing diverter switch puts the output of " online non-test " end and is connected to the 3rd binding post D and all keeps the normal condition that works online, this moment by the charge/discharge test device for distributed full online storage battery pack system according to selection, function and parameter are provided with and finish online constant-current discharge of tested batteries and charge maintenance test automatically.
See also Fig. 8, the online capacity discharge test of tested batteries I process, according to the test parameter setting, carry out the constant-current discharge test of online capacity with I 1 electric current that discharges, the constant-current discharge electric current I of carrying out greater than tested batteries I when online communication apparatus of load electric current and the batteries floating current sum (I equipment+I floating current) that works online is discharged 1 the time, the charge/discharge test device for distributed full online storage battery pack system controls DC-DC converter 12 automatically, with automatic steady current control output voltage UO, improve the stable voltage U of online output battery pack 1+U0, it is online to communication equipment load constant-current discharge test job requirement to satisfy tested batteries I, automatically forbid or close constant-current discharge load intelligence control circuit 5 and battery power discharge load circuit 6, keep constant current the online communication apparatus of load I discharge 1=IB1=ID+1+IA1=I discharge D+I floating charge+I industry control+IA that discharges; (IB1 discharge is the input service electric current of serial connection charge/discharge test device for distributed full online storage battery pack, I discharge D be tested batteries I to communication equipment electric electric current, the I floating charge is other batteries floating charge operating currents that works online; The I industry control is the operating current of the DC-DC host work power supply 1 in the charge/discharge test device for distributed full online storage battery pack, and this DC-DC host work power supply 1 provides the working power of relevant control unit 2; ID+1 provides the operating current sum of importing power supply for tested batteries I gives DC-DC converter 12 and constant-current discharge load intelligence control circuit 5 with battery power discharge load circuit 6 for the electric current I A of DC-DC converter 12 output services.At this moment, I Constant Current Load=0.IA=I Constant Current Load+IDC-DC=IDC-DC), the online communication equipment work electric current I equipment=I rectifier+I D that discharges, at this moment, the rectifier of operate as normal or high frequency switch power output current I rectifier are less than communication equipment loaded work piece electric current I equipment; Under normal operation, its-48V rectifier or HF switch output current I rectifier are the load of communication equipment loaded work piece electric current I, tested batteries I discharging current I discharge D and the batteries floating current I floating charge sum that works online.Discharge process, the voltage of tested batteries I is along with the prolongation of discharging current and time, battery voltage also descends thereupon, adjust output voltage U O by the control of charge/discharge test device for distributed full online storage battery pack automatic steady current, the lifting voltage that works online makes tested batteries I carry out online capacity discharge test with constant electric current.The constant-current discharge electric current I of carrying out less than tested batteries I when online communication apparatus of load electric current and the batteries floating current sum (I equipment+I floating current) that works online is discharged 1 the time, the preferential control automatically DC-DC of charge/discharge test device for distributed full online storage battery pack system converter 12, with automatic steady current control output voltage UO, improve the stable voltage U of online output battery pack 1+U0, satisfy that tested batteries I is online preferentially to carry out constant current power supply to the communication equipment load, simultaneously carry out pressure limiting current stabilization numerical value according to actual online communication apparatus of load automatically, automatically the electric current of auxiliary constant-current discharge load intelligence control circuit 5 and discharge load circuit 6 is adjusted in control, keeps tested batteries I to carry out online constant-current discharge.At this moment, tested batteries I is to the auxiliary constant-current discharge load of the control of online communication apparatus of load and charge/discharge test device for distributed full online storage battery pack system I discharge 1=IB1 discharge=ID+1+IA1=I discharge D+I floating charge+I industry control+IA=I D+I floating charge+I industry control+I Constant Current Load+IDC-DC that discharges that discharges; IA=I Constant Current Load+IDC-DC), the online communication equipment work electric current I equipment=I D that discharges.At this moment, the rectifier of operate as normal or high frequency switch power output current I rectifier are less than communication equipment loaded work piece electric current I equipment and tested batteries I discharging current I discharge 1, and no current output.Under normal operation, its-48V rectifier or HF switch output current I rectifier are communication equipment loaded work piece electric current I equipment, tested batteries I discharging current I discharge D and the batteries floating current I floating charge sum that works online.Discharge process, the voltage of tested batteries I is along with the prolongation of discharging current and time, battery voltage also descends thereupon, adjust output voltage U O by distributed online batteries charge/discharge capacity integrated maintenance testing equipment automatic steady current control, the lifting voltage that works online makes tested batteries I carry out the discharge capacity test with constant electric current.Carry out the charge/discharge test device for distributed full online storage battery pack of discharge test; have equipment on-Line Voltage voltage-limiting protection, overvoltage protection; tested batteries discharge low-voltage variation, cell discharge off low-voltage variation; and battery discharge work current limliting and overcurrent protection, and batteries, monomer, online charging overvoltage, voltage stabilizing current limliting, constant current pressure limiting or the like protection.Concrete parameter setting; the user can set according to actual testing requirement; for avoiding customer parameter that mistake is set; the charge/discharge test device for distributed full online storage battery pack system also has parameter the upscale protection function is set, and is safe in utilization to guarantee the operation of charge/discharge test device for distributed full online storage battery pack system.
After online discharge finishes, be charged to equipotential automatically and recover to work online catenation principle as shown in Figure 9:
After the online discharge test of tested batteries I finished, the charge/discharge test device for distributed full online storage battery pack system controlled DC-DC converter 12 and constant-current discharge load and intelligence control system circuit 5 automatically and is in closed condition, and the IA electric current is tending towards 0.Charge/discharge test device for distributed full online storage battery pack is controlled automatic current limiting charging and equipotential attachment security control circuit 4 automatically simultaneously; and the second protective circuit 10 charging recovery process that enters a stage; utilize system's output voltage of online-48V rectifier or high frequency switch power equipment; (schematic diagram omits to carry out current-limiting charge by automatic current limiting charging and 4 couples of tested batteries I of equipotential attachment security control circuit; this stage is to the tested same discharge test device for distributed full online storage battery pack of battery charging principle);-48V rectifier or switch power supply output current I rectifier=I equipment+I D that charges; tested batteries I charging current IB1 charging=I charging D-(I floating charge+I industry control); prolongation along with charging current and time; the voltage of tested batteries I also increases; when when being tending towards equipotential with on-Line Voltage; carry out its charging current of intelligent diagnostics by the charge/discharge test device for distributed full online storage battery pack system; when voltage differences etc. satisfy condition; tested batteries I is changed automatically over to constant current charge and the voltage stabilizing current-limiting charge of two-stage; automatically the large power supply static switch pipe conducting in control second safety protective circuit 10; system's output voltage of online-48V rectifier or high frequency switch power equipment is charged to tested batteries by this power supply static switch pipe; and finish equipotential safety and connect; from then on the charge/discharge test device for distributed full online storage battery pack system changes tested batteries I over to the charging recovery process of two-stage automatically; connect and self-starting DC-DC converter 12 in this output polarity conversion by system's automatic control power supply positive-negative polarity change over switch 8; and the equipotential of closing second safety protective circuit 10 connects; automatically regulate the output voltage of DC-DC converter 12; promote the voltage of tested batteries I; thereby tested batteries I is carried out online voltage stabilizing current-limiting charge work (when the charging voltage of tested batteries I does not reach the charging voltage value of system parameter setting; DC-DC converter 12 is in the constant current charge operating state); as shown in Figure 9; tested batteries I charging current IB1 charging=I charging D-(I floating charge+I industry control)-IDC-DC; the voltage U E1=UI on-Line Voltage+UO at tested batteries I two ends is more than or equal to the normal output voltage of system of online-48V rectifier or high frequency switch power equipment at this moment; in charging process; charging voltage and the electric current of the tested batteries I of system's real time automatic detection; and automatic diagnosis; when tested batteries I finishes charging recovery capacity; system will regulate the output voltage of DC-DC converter 12 automatically and close the output of its voltage; when treating that tested batteries I voltage equals to work online voltage; system will control second safety protective circuit 10 automatically and carry out or drive safe equipotential circuit and finish equipotential connecting; and the switching of finishing batteries on-line testing diverter switch 13 puts " online non-test " state, finishes tested batteries I charge and discharge maintenance test and recovers to work online overall process fully.
The online one by one discharge of batteries, charging return to " online non-test " this charge/discharge test device for distributed full online storage battery pack of operation principle overall process by after being provided with of system program menu selection function, parameter, to control batteries on-line testing conversion control circuit drive controlling batteries on-line testing diverter switch 13 automatically by the MCU unit program and carry out " on-line testing " and conversion of " online non-test " mode of operation and control automatically, carry out the online one by one capacity discharge test of tested batteries, and recover the state that works online automatically.As previously mentioned, the online discharge test of tested batteries I finishes, recover to work online on the basis of overall process to finishing charging recovery capacity and equipotential, charge/discharge test device for distributed full online storage battery pack will carry out next tested batteries automatically and carry out online discharge test.Repeat the above-mentioned course of work (principle is the same), finish the online one by one charge-discharge test maintenance work of all online batteries capacity automatically.
In the foregoing discharge course of work, tested batteries I safety on line power supply is by safety protective circuit 3 and the 10 dual power supply safeguard protections of second safety protective circuit; And in charging process; if civil power takes place to interrupt or rectifier (high frequency switch power equipment) fault; cause other online batteries to be discharged to the phenomenon of online low pressure; great power bidirectional power supply static switch pipe forward conduction in second safety protective circuit 10 is connected in the power supply that works online thus; and carry out the connection of equipotential safety and protect; automatically close simultaneously the output of DC-DC converter 12, guaranteeing all can the uninterrupted safe power supply of real-time online in the tested batteries I charge or discharge test process.
The operation principle of embodiment four please is described in conjunction with Figure 10 and Figure 11, using operation principle compares with embodiment one, embodiment three, difference is: the DC-DC converter 12 of embodiment four, the constant-current discharge load intelligence control circuit 5 of serial connection and the input service power supply of discharge load circuit 6 provide via the forward and reverse polarity work of power supply protective circuit 9; Tested batteries I positive pole is serially connected with the B1 port of charge/discharge test device for distributed full online storage battery pack; connect the forward and reverse polarity work of power supply protective circuit 9 through batteries on-line testing diverter switch, make tested batteries I power supply and the forward and reverse polarity work of power supply protective circuit 9, constant-current discharge load intelligence control circuit 5, discharge load circuit 6 (being constant-current discharge load and intelligence control system circuit) series arm finish and be connected in parallel.Remainder is identical with embodiment one, embodiment's three, can will not repeat with reference to its associated description herein.
The online operation principle that discharges and recharges of embodiment two, embodiment three and embodiment four and+24V power supply system for communications equipment:
As shown in Figure 7, be embodiment two, embodiment three and embodiment four and the wiring schematic diagram of+24V power supply system for communications equipment.It is compared with-48V communication power supply backup battery online discharge capacity the test job of group principle with the foregoing description one, embodiment three and embodiment four, the difference of the two is: the positive-negative polarity of the first binding post A of connection device, the second binding post B and the 3rd binding post D is contrary, when therefore online discharge capacity was tested, the operating current direction was opposite.But operation principle is identical, can will not repeat with reference to the description of preamble herein.
In sum, charge/discharge test device for distributed full online storage battery pack of the present invention has been realized the complete online unattended operation remote monitoring and administration of radio communication base station power supply backup battery group; Thoroughly solved the long-term problem that is perplexing communications industry power-source maintenance management work person and on-site maintenance personnel, can in time control all online battery capacities of existing network, emergency communication supportability and resource scheduling management level have been improved, simplified the maintenance management flow process, improved operating efficiency, save a large amount of maintenance costs, promote network operation safety and integrated operation maintenance management level.
Claims (9)
1. charge/discharge test device for distributed full online storage battery pack is characterized in that: comprising:
One DC-DC host work power supply, one control unit, one batteries on-line testing diverter switch, second safety protective circuit, a batteries on-line testing conversion control circuit, one positive-negative polarity change over switch, a safety protective circuit connected with each other, an automatic current limiting charging and equipotential attachment security control circuit, a DC-DC converter, and the constant-current discharge load intelligence control circuit and the discharge load circuit that are connected in series mutually;
Described control unit further comprises a MCU unit and a current/voltage data acquisition that all is connected with this MCU unit and conversion control circuit, batteries monomer voltage checkout equipment, data storage, telecommunication circuit again, LCD shows and the keyboard input;
The input of described positive-negative polarity change over switch is connected to described safety protective circuit, automatic current limiting charging and equipotential attachment security control circuit, DC-DC converter, exports and connect the two ends of the output of batteries on-line testing diverter switch;
Described batteries on-line testing conversion control circuit is connected with batteries on-line testing diverter switch, MCU unit and DC-DC host work power supply respectively;
The corresponding input parallel connection of the input of described batteries on-line testing diverter switch and second safety protective circuit is connected in online batteries again; A batteries on-line testing diverter switch wherein output is connected with the output of second safety protective circuit, another output and safety protective circuit, automatic current limiting charging and equipotential attachment security control circuit, DC-DC converter and an end that connects are connected, and are connected with an end of described constant-current discharge load intelligence control circuit;
The output of DC-DC host work power supply is connected with described constant-current discharge load intelligence control circuit, described control unit in the described equipment;
Described DC-DC converter is connected with described current/voltage data acquisition and conversion control circuit and MCU unit respectively;
Described MCU unit also is connected with described constant-current discharge load intelligence control circuit, automatic current limiting charging and equipotential attachment security control circuit, positive-negative polarity change over switch, batteries on-line testing diverter switch, second safety protective circuit, batteries on-line testing conversion control circuit respectively;
The input of DC-DC host work power supply is connected in the two ends of online communication working power in the described equipment, and the operate as normal power supply is provided.
2. a kind of charge/discharge test device for distributed full online storage battery pack as claimed in claim 1; it is characterized in that: also comprise the forward and reverse polarity work of power supply protective circuit; the input of the forward and reverse polarity work of this power supply protective circuit is connected with the positive-negative polarity change over switch with described batteries on-line testing diverter switch respectively; output respectively with described constant-current discharge load intelligence control circuit, the DC-DC converter connects.
3. charge and discharge test equipment for full on-line storage battery pack as claimed in claim 1 is characterized in that: described DC-DC converter, DC-DC host work power supply, described constant-current discharge load intelligence control circuit all have the characteristics of forward and reverse polarity power work.
4. a kind of charge/discharge test device for distributed full online storage battery pack as claimed in claim 1, it is characterized in that: also comprise an AC/DC Switching Power Supply, described DC-DC host work power supply is the DC-DC power supply, and the output of this AC/DC Switching Power Supply is connected described DC-DC host work power supply and civil power respectively with input.
5. a kind of charge/discharge test device for distributed full online storage battery pack as claimed in claim 1, it is characterized in that: also comprise at least one current detection circuit, described each current detection circuit is coupled in this equipment and monitors each input that discharges and recharges working power of described tested batteries.
6. a kind of charge/discharge test device for distributed full online storage battery pack as claimed in claim 3 is characterized in that: described current detection circuit is a current sensor.
7. a kind of charge/discharge test device for distributed full online storage battery pack as claimed in claim 1 is characterized in that: described safety protective circuit is a heavy-duty diode.
8. a kind of charge/discharge test device for distributed full online storage battery pack as claimed in claim 1; it is characterized in that: described second safety protective circuit comprises that a great power bidirectional power supply static switch pipe, a direct current contactor and are used to control and protect the automatic protection circuit of this great power bidirectional power supply static switch pipe and D.C. contactor work, and described great power bidirectional power supply static switch pipe and D.C. contactor are connected in parallel.
9. a kind of charge/discharge test device for distributed full online storage battery pack as claimed in claim 1; it is characterized in that: described batteries on-line testing diverter switch has the make-before-break function, and described second safety protective circuit automatic protection circuit that comprises a great power bidirectional power supply static switch pipe, be used to control and protect this great power bidirectional power supply static switch plumber to do.
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