CN207528884U - The charge/discharge test device of distributed complete online accumulator group - Google Patents
The charge/discharge test device of distributed complete online accumulator group Download PDFInfo
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- CN207528884U CN207528884U CN201721384980.5U CN201721384980U CN207528884U CN 207528884 U CN207528884 U CN 207528884U CN 201721384980 U CN201721384980 U CN 201721384980U CN 207528884 U CN207528884 U CN 207528884U
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- 238000004891 communication Methods 0.000 claims description 37
- 230000005611 electricity Effects 0.000 claims description 10
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- 238000005259 measurement Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 11
- 238000011068 load Methods 0.000 description 8
- 238000007599 discharging Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
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- RTZKZFJDLAIYFH-UHFFFAOYSA-N diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
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Abstract
The utility model provides a kind of charge/discharge test device of distributed complete online accumulator group, including the storage of the online switching device of battery pack, MCU units, high frequency DC/DC converters, working power circuit, drive control circuit, monomer voltage detection device, current/voltage data acquisition circuit, telecommunication circuit and data and human-computer interaction circuit；The online switching device of battery pack gates the both ends that online backup batteries are connected to working power circuit, also with high frequency DC/DC converters and connecing；MCU units are also respectively connected with high frequency DC/DC converters, working power circuit, monomer voltage detection device, current/voltage data acquisition circuit, telecommunication circuit and data storage and human-computer interaction circuit.The utility model efficiently solves offline discharge operation, power supply and restores online overall process maintenance test security hidden trouble, has many advantages, such as that energy saving, easy to operate and safe, online power supply safety, test terminate to carry out charging and restoring equipotential link online automatically.
Description
【Technical field】
The utility model is related to a kind of maintenance system of base station storage batteries group, more particularly to a kind of distributed complete online electric power storage
The charge/discharge test device of pond group.
【Background technology】
The existing wireless base station power supply backup battery maintenance management of the communications industry, because wireless base station quantity is more, scale is big, dimension
Protect that labor intensity is high, of high cost, risk is big, maintenance work task is heavy and waste of energy problem, causes most
Battery capacity discharge test maintenance work fails to implement completely, leads to the reality of the online backup batteries to radio communication base station
Capacity is not known about, and emergency guarantee powers duration is unclear, often because emergency power generation management and running cannot be effectively performed in commercial power interruption,
The generation of wireless base station communication disruption accident is often led to, accumulator is scrapped in advance, these problems annoying entire logical always
Believe industry power-source maintenance managing and serving system and specific maintenance staff.
To realize the online unattended intelligent monitoring management entirely of the online backup batteries of radio communication base station power supply, by
Remote monitoring is automatically performed the volume test of online accumulator cell charging and discharging, controls now net all online battery capacities and guarantor in time
Hinder the data of powers duration, reduce the labor intensity of maintenance personnel, reduce maintenance cost spending, improve network running quality and whole
Body maintenance work efficiency promotes the integrated maintenance management level of network security operation, takes scientific and effective maintenance management technology,
Extend accumulator group service life, realize that detection and system safeguard pipe to the online accumulator group charge/discharge capacity of the whole network automatically automatically
Reason.
Tradition carries out off-line test equipment, discharge operation, power supply and recovery using intelligent fictitious load, and overall process is adopted
Carried out with offline mode, for only having for the system of a group storage battery group, at this time if there is the situation of commercial power interruption, then without
The accumulator group of standby is powered to custom system equipment, is caused custom system equipment operating interruptions, is led to major accident.Moreover
After the offline deep discharge of tested accumulator group, group terminal voltage is seriously relatively low, at this time if directly by tested accumulator group and connect
It to system, then will appear great impact electric current, seriously affect the service life of battery, therefore traditional battery service method is deposited
In maintenance test security hidden trouble.
【Utility model content】
The technical problems to be solved in the utility model is to provide a kind of charge and discharge electrical measurement of distributed complete online accumulator group
Equipment is tried, realizes the online unattended intelligent monitoring management entirely of the online backup batteries of radio communication base station power supply.
The utility model is realized in this way：A kind of charge/discharge test device of distributed complete online accumulator group, it is described
Base station storage batteries component is online communication power supply and online backup batteries, it is characterised in that：The charge/discharge test device
Including the online switching device of battery pack, MCU units, high frequency DC/DC converters, working power circuit, drive control circuit, list
Bulk voltage detection device, current/voltage data acquisition circuit, telecommunication circuit and data storage and human-computer interaction circuit；
The online communication power supply and online backup batteries are all connected with the online switching device of the battery pack, pass through institute
It is the charge and discharge to state the online switching device of battery pack and gate online backup batteries to be connected to the both ends of the working power circuit
The input service power supply of electric test equipment；The online switching device of battery pack is also with the high frequency DC/DC converters and connecing；Institute
State MCU units be also respectively connected with the high frequency DC/DC converters, the working power circuit, the monomer voltage detection set
Standby, described current/voltage data acquisition circuit, the telecommunication circuit and data storage and human-computer interaction circuit.
Further, the charge/discharge test device has one first wire connection terminal A；
The online switching device of battery pack has there are two input terminal B1, B2, two output terminal C1, C2, and including equipotential
Connecting valve K1, equipotential link switch K2, online afterflow protection circuit D1 and online afterflow protection circuit D2；
The equipotential link switch K1 connect the input terminal respectively with described after circuit D1 is protected in line afterflow and is connect
B1 and output terminal C1；
The equipotential link switch K2 connect the input terminal B2 respectively with described after line afterflow protection circuit D2 connects
With output terminal C2；
Described input terminal B1, B2 are connected to one end of line communication power supply and online backup batteries, the work
Distinguish the output terminal C1 and the first wire connection terminal A in the both ends of power circuit.
Further, the online afterflow protection circuit D1 and online afterflow protection circuit D2 is heavy-duty diode,
Power is more than 500W.
Further, the online switching device of the battery pack also has there are two on-line testing switching switch KB, KC, it is described
Line test switching switch KB includes three terminals KB1, KB2, KB3, and the on-line testing switching switch KC includes three wiring
Hold KC1, KC2, KC3；The terminals KB1 connections input terminal B1, the terminals KB2 connections input terminal B2；Institute
State terminals KC1 connections the output terminal C1, the terminals KC2 connections output terminal C2；
The high frequency DC/DC converters include input terminal ID+, ID- and output terminal OD+, OD-；The ID+ connections described
One wire connection terminal A；It is connect after input terminal ID-, OD+ connection with the terminals KB3；The OD- and terminals KC3
Connection.
Further, the anode of the online communication power supply and online backup batteries connects an anode busbar, cathode
A cathode bus bar is connected, described output terminal C1, C2 are connected to one of the anode busbar and cathode bus bar, first terminals
Sub- A be then connected to the anode busbar and cathode bus bar one of in addition.
Further, the high frequency DC/DC converters are a hf switching power supply, and output voltage, electric current is connect
It is continuous adjustable, while there is constant current voltage limiting, voltage stabilizing current limliting, overvoltage, overcurrent, short-circuit function.
The utility model has the following advantages that：
1st, the charge/discharge test device of the utility model is concatenated with tested battery pack, ensures tested accumulator
Group in safe presence, does not influence the normal safe power supply to communication system equipment, realizes tested accumulator group always
It is discharged online actual load with the discharge parameter of test equipment setting；Online communication is gated by the online switching device of battery pack
The both ends that power supply is connected to the working power circuit are the input service power supply of the charge/discharge test device, meet accumulator group
Flash-over characteristic, related communication power supply operation and maintenance norm standard and accumulator group maintenance test request, discharge examination it is entirely online
Formula simultaneously maintains electric discharge energy-saving safe；
2nd, off-line test comparison is carried out using intelligent fictitious load with tradition, the charge/discharge test device of the utility model
It is hidden safely to efficiently solve offline discharge operation, power supply and the online overall process maintenance test of recovery for the cooperation of each circuit module
Suffer from problem, with energy saving, easy to operate and safe, online power supply safety, test and terminate the automatic progress electricity such as charging and recovery online
The advantages that position connection.
【Description of the drawings】
The utility model is further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the structure diagram of one embodiment of the utility model charge/discharge test device.
Fig. 2 is the structure diagram of another embodiment of the utility model charge/discharge test device.
Fig. 3 is the networking application topological diagram of the utility model charge/discharge test device.
【Specific embodiment】
It please refers to Fig.1 with shown in Fig. 2, the existing wireless base station of the communications industry, base station storage batteries component is online communication power supply
And online backup batteries, there are two group storage battery groups, accumulator group 1 and accumulator group 2, accumulator group 1 and accumulator in figure
Group 2 is divided into online communication power supply and online backup batteries, the online communication power supply and online standby by connection status
The anode of accumulator group connects an anode busbar 3, and cathode connects a cathode bus bar 4, and communication equipment actual loading 5 and -48v are
The both ends of system rectifier 6 connect anode busbar 3 and cathode bus bar 4 respectively.
The charge/discharge test device 100 of the utility model includes the online switching device 101 of battery pack, MCU units 102, height
Frequency DC/DC converters 103, working power circuit 104, drive control circuit 105, monomer voltage detection device 106, electric current/electricity
Press data acquisition circuit 107, telecommunication circuit 108 and data storage and human-computer interaction circuit 109.
The online communication power supply and online backup batteries are all connected with the online switching device of the battery pack, pass through institute
State the online switching device of battery pack and gate the both ends that online backup batteries are connected to the working power circuit 104, with for
The input service power supply of the charge/discharge test device 100；The online switching device 101 of battery pack passes through drive control electricity
Road connects the MCU units 102；The online switching device 101 of battery pack is also with the high frequency DC/DC converters 102 and connecing；
The MCU units are also respectively connected with the high frequency DC/DC converters 102, the working power circuit 104, the monomer voltage
Detection device 106, the current/voltage data acquisition circuit 107, the telecommunication circuit 108 and data storage
And human-computer interaction circuit 109.
Shown in figure, the charge/discharge test device 100 has the first wire connection terminal A, the second wire connection terminal B1 and B2, the
Three wire connection terminal C1 and C2.
There are two input terminal B1, B2 for the online tool of switching device 101 of the battery pack of the charge/discharge test device 100
(and second wire connection terminal B1, B2 of charge/discharge test device), two output terminal C1, C2 (and the of charge/discharge test device
Three wire connection terminal C1, C2), and including equipotential link switch K1, K2, online afterflow protection circuit D1, D2；The online afterflow
Protection circuit D1 and online afterflow protection circuit D2 is heavy-duty diode, and power is more than 500W.
The equipotential link switch K1 connect the input terminal respectively with described after circuit D1 is protected in line afterflow and is connect
B1 and output terminal C1；
The equipotential link switch K2 connect the input terminal B2 respectively with described after line afterflow protection circuit D2 connects
With output terminal C2；
Described input terminal B1, B2 are connected to one end of line communication power supply and online backup batteries, the work
Distinguish the output terminal C1 and the first wire connection terminal A in the both ends of power circuit.
The online switching device 101 of battery pack also has there are two on-line testing switching switch KB, KC, the on-line testing
Switching switch KB includes three terminals KB1, KB2, KB3, the on-line testing switching switch KC include three terminals KC1,
KC2、KC3；The terminals KB1 connections input terminal B1, the terminals KB2 connections input terminal B2；The wiring
Hold KC1 connections the output terminal C1, the terminals KC2 connections output terminal C2；
The high frequency DC/DC converters 103 include input terminal ID+, ID- and output terminal OD+, OD-；The ID+ connections institute
State the first wire connection terminal A；It is connect after input terminal ID-, OD+ connection with the terminals KB3；The OD- and the wiring
Hold KC3 connections.
Described output terminal C1, C2 are connected to one of the anode busbar and cathode bus bar, and the first wire connection terminal A then connects
Be connected to the anode busbar and cathode bus bar one of in addition.
The function of above-mentioned each circuit module is expressed as follows：
The MCU units 2：With the system program directive of MCU units pattern in order to control, to control all coupled and phase
All peripheral circuits or module closed；
The online switching device 101 of battery pack：
(1) it is internally integrated one or two heavy-duty diode D1, D2 and protects circuit as online afterflow, when tested electric power storage
When pond group carries out on-line testing working condition, heavy-duty diode is connected to the straight of accumulator group and power supply system for communications equipment
Between flowing switchboard, ensure that tested accumulator group in safe presence, is not influenced to communication system equipment just always
Normal safe power supply, the cathode of the heavy-duty diode connect Cx ends (output terminal C1, C2), and anode connects Bx ends (input terminal B1, B2)；
(2) equipotential link switch K1, K2 are internally integrated, after tested accumulator group discharge test is completed and
It is automatically performed after line current-limiting charge, carries out equipotential secure connection and restore tested accumulator group to online normal work；
(3) online test switching switch KB, KC are internally integrated, K1, K2 are switched with reference to equipotential link；To work online
Accumulator group perform and be placed in " on-line testing " or " online non-test " with the connection of output terminal switching and connect holding for working condition
(the i.e. tested accumulator group in tested accumulator group connection " on-line testing " end is in complete online charge-discharge test state to row switch；Quilt
It surveys the i.e. tested accumulator group in accumulator group connection connection " online non-test " end and is in equipotential on-line joining process state, do not lie in complete
Online charge-discharge test working condition), on-line testing the switching switch KB, KC have with K1, K2 cooperation allows tested battery pack
(by taking accumulator group 1 as an example, it is under default situations to implement make-before-break function to make-before-break function, and KB first is invested KB1, and KC is thrown
To KC1, K1 is disconnected again after the 500ms that is delayed；For accumulator group 2, similarly analogize), online accumulator group can be thrown into automatically
" on-line testing " state and " online non-test " and handoff procedure be in online power supply safety state, safety protection function
Constant, reliability is excellent.Under default situations, KB, KC is disconnected, and without any one end switching, K1, K2 are normally closed closed state；
Two groups of battery packs keep equipotential on-line joining process state at this time.
The high frequency DC/DC converters 103 are a hf switching power supply, are internally integrated automatic current limiting charging circuit,
Its output voltage, current-limiting charge electric current are continuously adjustable, while have the high reliability such as overvoltage, overcurrent, short circuit, excess temperature
Automatic protection function.
The working power circuit 104, input both ends are connected to the both ends for the power supply that works online, and are the entire charge and discharge
Electric test equipment 100 provides working power.
The drive control circuit 105, the execution selection for the online switching device 101 of drive control battery pack work online
The switching of accumulator group be placed in the crucial control of " on-line testing " or " online non-test " i.e. equipotential on-line joining process working condition
Circuit.
The voltage and current Acquisition Circuit 106, for the online tested storage of discharging test device for full online storage battery detection
On-Line Voltage, group terminal voltage, charging current and the discharge current of battery pack.
The current/voltage data acquisition circuit 107, acquisition measure the charging and discharging currents of accumulator group, accumulator group end
Voltage, system communication power supply voltage (online terminal voltage), voltage of battery cell etc..
The telecommunication circuit 108 is the RS485 circuits of Phototube Coupling, and external GPRS module or RS485 turn ether
Net module realizes telecommunication.
The data storage and human-computer interaction circuit 109, are the compositions such as SD card circuit and several buttons, LCD display.
The utility model charge/discharge test device 100 installs wiring there are two types of pattern at the scene, according to user's in-site installation
Standard selects corresponding pattern to be installed, and is now respectively described below：
1：Cathode series model, please refers to Fig.1, and the first wire connection terminal A of charge/discharge test device 100 is positive terminal, is connect
The positive terminal (former online accumulator group connects the positive terminal on power work ground) of online communication power supply, the second terminals in accumulator group
Sub- B1 and B2 is cathode, is connected on accumulator group negative pole end, and third wire connection terminal C1 and C2 are cathode, is connected on the negative of line communication power supply
Extremely (- 48V direct current cabinets the cathode bus bar in -48V power supply system for communications equipment)；
2：Anode series model, please refers to Fig.2, and the first wire connection terminal A is negative pole end, connects online communication electricity in accumulator group
The negative pole end in source, the second wire connection terminal B1 and B2 are anode, are connected on accumulator group positive terminal, third wire connection terminal C1 and C2 is just
Pole is connected on the positive terminal of line communication power supply and the ground connection (- 48V direct current cabinet anodes busbar in -48V power supply system for communications equipment).
The operation principle of the charge/discharge test device 100 of the utility model：
1st, when the KB3 in on-line testing switching switch KB is closed to KB1, the KC3 in KC is closed to KC1, and K1 is disconnected, and K2 is closed
When conjunction, accumulator group 1 enters on-line testing loop state, and accumulator group 2 keeps equipotential on-line joining process state；It stores at this time
Battery pack 1 is online backup batteries, and accumulator group 2 is online communication power supply.
2nd, similarly, when KB3 is closed to KB2, KC3 is closed to be disconnected to KC2, K2, and when K1 is closed, accumulator group 2 enters online
Test loop state, accumulator group 1 keep equipotential on-line joining process state, and accumulator group 2 is online backup batteries at this time,
Accumulator group 1 is online communication power supply.
3rd, last, when tested accumulator group is completed, after current-limiting charge, on-line testing switching switch KB, KC are
It disconnects, without any one end switching, K1, K2 revert to normally closed closed state.Tested accumulator group is restored to the grade electricity of acquiescence
Position on-line joining process state, at this time the positive and negative anodes of two groups of battery packs be directly attempted by communication switch power positive and negative anodes, at battery pack
In online floating charge electricity condition.
As shown in figure 3, the charge/discharge test device 100 of the utility model passes through GPRS/4G/RJ in networking
45TCPIP modules, various wireless networks or wireless network connection to cloud network host/server or intranet host/server,
The pc client of related personnel most is sent to through wireless router/interchanger afterwards, realizes remote control.
In conclusion the utility model is realizes the complete online unmanned value of the online backup batteries of radio communication base station power supply
Intellectualized monitoring management is kept, the volume test of online accumulator cell charging and discharging is automatically performed by remote monitoring, controls now net institute in time
Have online battery capacity and ensure the data of powers duration, reduce the labor intensity of maintenance personnel, reduce maintenance cost spending,
Network running quality and whole maintenance work efficiency are improved, the integrated maintenance management level of network security operation is promoted, takes section
Effective maintenance management technology is learned, extends accumulator group service life, realizes that the online accumulator group charge/discharge capacity of the whole network is automatic
Detection and the automatic maintenance management of system, and also have the characteristics that following：
(1) charge/discharge test device of the utility model is with online communication power supply and the electricity at online backup batteries both ends
The input service power supply for the test equipment is pressed, meets battery discharging characteristic, related communication power supply operation and maintenance norm standard
And accumulator group maintenance test request, discharge examination is complete online and maintains electric discharge energy-saving safe.
(2) there is the charge/discharge test device of the utility model online accumulator group communication equipment load energy-saving safe is put
Electricity Functional carries out online constant current suitable for the online backup batteries of the different various communication equipment load power supplies of existing net and puts
Electrical testing.
(3) by seamless link technology, the charge/discharge test device of the utility model is gone here and there with tested battery pack
It connects, ensures that tested accumulator group in safe presence, does not influence the normal safe power supply to communication system equipment always,
Realize that tested accumulator group online discharges to actual load with the discharge parameter that test equipment is set.
(4) after the charge/discharge test device of the utility model completes discharge capacity test, work is exported by online rectifier
Make power supply and the online current-limiting charge of progress is automatically controlled by test equipment, and complete equipotential secure connection.
(5) charge/discharge test device of the utility model carries out off-line test comparison with tradition using intelligent fictitious load,
It efficiently solves offline discharge operation, power supply and restores online overall process maintenance test security hidden trouble, there is energy saving, behaviour
Make handy and safe, online power supply safety, test and terminate automatic the advantages that carrying out charging online and recovery equipotential link.
(6) charge/discharge test device of the utility model has single battery on-line checking and alarm defencive function, " is setting
It is standby " in circuit design using the wired voltage tester management system of monomer, preservation ＆ testing is easy to operate, improves system maintenance work peace
Entirely.
(7) output of the charge/discharge test device of the utility model has voltage stabilizing current limliting, current stabilization limited-voltage control defencive function,
And output overcurrent, overvoltage protection and overvoltage shutdown defencive function, have the online discharge capacity inspection of communication backup battery group
It surveys and safe power supply protects feature.
(8) it is simple to have attended operation, a parameter setting for the charge/discharge test device of the utility model, and intelligence degree is high,
The features such as defencive function is strong, the complete online battery power discharge test system operatio friendly interface, operates, i.e., according to system prompt
The online battery capacity detection that communicates can be completed, and automatically saves data, so as to maintenance analysis and management；
(9) the control system output of the MCU units of the charge/discharge test device of the utility model, connects with normal data
Mouth and RS485 interfaces, extend TCP/IP networks, and GPRS/3G/4G interfaces are flexible and convenient to use.
Although the foregoing describe specific embodiment of the present utility model, those familiar with the art should
Work as understanding, our described specific embodiments are merely exemplary rather than for the limit to the scope of the utility model
Equivalent modification and variation fixed, that those skilled in the art are made in the spirit according to the utility model, all should
Cover in the scope of the claimed protection of the utility model.
Claims (6)
1. a kind of charge/discharge test device of distributed complete online accumulator group, the base station storage batteries component is online communication electricity
Source and online backup batteries, it is characterised in that：The charge/discharge test device includes the online switching device of battery pack, MCU
Unit, high frequency DC/DC converters, working power circuit, drive control circuit, monomer voltage detection device, current/voltage data
Acquisition Circuit, telecommunication circuit and data storage and human-computer interaction circuit；
The online communication power supply and online backup batteries are all connected with the online switching device of the battery pack, pass through the electricity
The both ends that the online backup batteries of the online switching device gating of pond group are connected to the working power circuit are the charge and discharge electrical measurement
Try the input service power supply of equipment；The online switching device of battery pack is also with the high frequency DC/DC converters and connecing；It is described
MCU units are also respectively connected with the high frequency DC/DC converters, the working power circuit, the monomer voltage detection device, institute
State current/voltage data acquisition circuit, the telecommunication circuit and data storage and human-computer interaction circuit.
2. the charge/discharge test device of distributed complete online accumulator group according to claim 1, it is characterised in that：
The charge/discharge test device has one first wire connection terminal A；
The online switching device of battery pack has there are two input terminal B1, B2, two output terminal C1, C2, and including equipotential link
Switch K1, K2, online afterflow protection circuit D1 and D2；
Equipotential link switch K1 with it is described connect respectively in line afterflow protection circuit D1 and after connecing the input terminal B1 and
Output terminal C1；
The equipotential link switch K2 and input terminal B2 and defeated of being connect respectively after line afterflow protects circuit D2 to connect
Outlet C2；
Described input terminal B1, B2 are connected to one end of line communication power supply and online backup batteries, the working power
The both ends of circuit connect the output terminal C1 and the first wire connection terminal A respectively.
3. the charge/discharge test device of distributed complete online accumulator group according to claim 2, it is characterised in that：It is described
Online afterflow protection circuit D1 and online afterflow protection circuit D2 is heavy-duty diode, and power is more than 500W.
4. the charge/discharge test device of distributed complete online accumulator group according to claim 2, it is characterised in that：It is described
The online switching device of battery pack also has there are two on-line testing switching switch KB, KC, and the on-line testing switching switch KB includes
Three terminals KB1, KB2, KB3, the on-line testing switching switch KC include three terminals KC1, KC2, KC3；It is described to connect
Line end KB1 connections the input terminal B1, the terminals KB2 connections input terminal B2；The terminals KC1 connections are described defeated
Outlet C1, the terminals KC2 connections output terminal C2；
The high frequency DC/DC converters include input terminal ID+, ID- and output terminal OD+, OD-；The ID+ connections described first connect
Line terminals A；It is connect after input terminal ID-, OD+ connection with the terminals KB3；The OD- and terminals KC3 connects
It connects.
5. the charge/discharge test device of distributed complete online accumulator group according to claim 3, it is characterised in that：It is described
The anode of online communication power supply and online backup batteries connects an anode busbar, and cathode connects a cathode bus bar, described defeated
Outlet C1, C2 is connected to one of the anode busbar and cathode bus bar, and it is female that the first wire connection terminal A is then connected to the anode
Row and cathode bus bar in addition one of.
6. the charge/discharge test device of distributed complete online accumulator group according to claim 1, it is characterised in that：It is described
High frequency DC/DC converters are a hf switching power supply, and output voltage, electric current are continuously adjustable, while have constant current limit
Pressure, voltage stabilizing current limliting, overvoltage, overcurrent, short-circuit function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721384980.5U CN207528884U (en) | 2017-10-25 | 2017-10-25 | The charge/discharge test device of distributed complete online accumulator group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721384980.5U CN207528884U (en) | 2017-10-25 | 2017-10-25 | The charge/discharge test device of distributed complete online accumulator group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207528884U true CN207528884U (en) | 2018-06-22 |
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ID=62570851
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721384980.5U Active CN207528884U (en) | 2017-10-25 | 2017-10-25 | The charge/discharge test device of distributed complete online accumulator group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207528884U (en) |
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2017
- 2017-10-25 CN CN201721384980.5U patent/CN207528884U/en active Active
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