CN103941192B - Energy storage power station test load - Google Patents
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Abstract
The invention provides an energy storage power station test load which comprises a transformer, a load module and a master control module. High voltages are input to the transformer, the transformer outputs low voltages to be connected to the load module, and the load module comprises an impedance load array and an inductive impedance load array. The master control module is connected with the load module to control switching of the impedance load array and/or the inductive impedance load array in the load module. According to the characteristics of an actual power grid, the input high voltages are converted to the lower voltages through the transformer and then are connected to the load module in a low-voltage level, the problem of high-voltage energy storage power station testing is completely solved, the overall load module can achieve load capacity in a three-phase unbalanced state, and the requirement for a 10 W minimum regulation stride can be met.
Description
Technical field
The present invention relates to a kind of power train regiment commander carries test equipment, refer in particular to a kind of energy-accumulating power station test load.
Background technology
With the development of new forms of energy, for improving the stability of electrical network, electrical network accesses a lot of photovoltaics, wind-powered electricity generation and energy storage dress
Put, usual with energy-storage battery is referred to as battery energy storage station (bess-battery energy storage in electrical network
Station), it refers to, with accumulator as energy carrier, carry out discharge and recharge by energy conversion system, and can be real with power system
The energy-storage system that the active and quadergy of existing various ways exchanges.
Known to, before battery energy storage stands in the operation of power networks of formal input, it is required for its energy-storage system performance is tested,
Now it is accomplished by using special test device energy-accumulating power station test load (high-power resistance and
Inductive load), the adjustable resistive load of built-in classification, inductive load, appearance in this energy-accumulating power station test load
Property load, thus can achieve load simulation.
However, in existing electrical network, the access point voltage at battery energy storage station mostly is 10kv level, but exchange in the market
Test load is all that it primary concern is that the material relative maturity of load by 400v design.But, for battery energy storage station
Typically require the uneven loading of realization, and (the smallest step refers to adjust from current steady state to load minimum step amplitude
Arrive next stable state, device is capable of single single step and is loaded the minimum capacity value that resistance sense holds power) it is 10w, if adopting 10kv's
Resistance, inductance, catalyst, meeting there is problems in that
1), the resistance of 10w/10kv single-phase resistance is: 0.000577 Europe, and resistance is too little.Material cost is also very high simultaneously.
Powerful resistance is also required to the resistance 33 of pressure 300v, and quantity is a lot, simultaneously need to when being used in series, to every in load
The coherence request of root resistance is very high, and the duration of screening is very long, in the later stage using also there is certain risk, causes later maintenance
Workload is big, the problems such as investigation is difficult.
2), the catalyst of 10kv, do not have low capacity such as 10w minimum be also 63a be applied to 50kw power grade, complete
The requirement of small-power fine adjustments entirely can not be met, its cost is increased simultaneously, whole equipment volume increases relatively.
3), the operations involving high pressure environment of 10kv for site operation personnel quality put forward higher requirement must be requested that
There is high-tension electricity cost, just can achieve relevant item test, operator are required higher.
4) if pressing 10kv design, specify that between 10kv high-pressure electrified conductor, creep age distance is 250mm according to standard, electrically
Gap is 125mm, if from 10kv design, undoubtedly increased the volume of equipment, it is estimated that equipment size at least increases by 1/3,
Equipment size is excessive, and takies bigger space.The volume realizing three-phase imbalance load cabinet is just bigger.
As can be seen here, need in the industry a kind of energy-accumulating power station test load meeting the use of 10kv electrical network of design badly.
Content of the invention
It is an object of the invention to overcoming drawbacks described above, one kind is provided to be converted to low pressure mode by high pressure and then realize electricity
The energy-accumulating power station test load of the grid-connected test of pond energy storage station.
The object of the present invention is achieved like this: a kind of energy-accumulating power station test load, it include transformator, load blocks and
Main control module；Described transformator inputs high pressure, and output low pressure is connected into load blocks；Described load blocks include impedance load battle array
Row, inductive reactance array；Described main control module be connected with load blocks control load blocks in impedance load array and/or sense
The switching of anti-loading array.
The beneficial effects of the present invention is according to the characteristic of actual electric network, to the high pressure inputting first by through a transformator
It is transformed into low pressure, is then attached to the load blocks of low pressure grade, thus completely solving high-voltage energy storage power station test problem, no
Only whole load blocks can achieve that three-phase imbalance state band carries, and minimum adjustment stride can reach the requirement of 10w.Technology is overall
By being converted to, using by high pressure, the test that low pressure mode realizes energy-accumulating power station, taken into account the low-voltage load technology of maturation simultaneously
Application, is later dilatation and other performance tests are laid a good foundation, and the later maintenance cost of whole equipment is greatly reduced.
Brief description
The concrete structure of the present invention is described in detail in detail below in conjunction with the accompanying drawings
Fig. 1 is the system architecture diagram of the present invention；
Fig. 2 is the system architecture diagram of the present invention one specific embodiment；
Fig. 3 is the system architecture diagram of another specific embodiment of the present invention；
Fig. 4 is the circuit theory diagrams of impedance load array one specific embodiment of load blocks of the present invention.
41- single-phase low-power group；42- single-phase high-power group；43- Three-phase high-power group.
Specific embodiment
It is negative that the thinking of the transformation process of electrical network process of distributing electricity height-medium-low distribution is applied to energy-accumulating power station test by the present invention
Carry, change and take into account the application that ripe low-voltage load technology achieves the test of energy-accumulating power station by high-low pressure.For specifically
Bright technology contents of the present utility model, structural features, realized purpose and effect, below in conjunction with embodiment and coordinate accompanying drawing 1-
3 are explained in detail.
Refer to Fig. 1, the present invention relates to a kind of energy-accumulating power station test load, it includes transformator, load blocks and master control
Module；Described transformator inputs high pressure, and output low pressure is connected into load blocks；Described load blocks include impedance load array, sense
Anti-loading array,；The impedance load array that described main control module is connected with load blocks in control load blocks and/or induction reactance are born
Carry the switching of array.
Thus, the present invention is according to the characteristic of actual electric network, first low by being transformed into through a transformator to the high pressure of input
Pressure, being then attached to the load blocks of low pressure grade, thus completely solving high-voltage energy storage power station test problem, not only entirely bearing
Carry module and can achieve that three-phase imbalance state band carries, and minimum adjustment stride can reach the requirement of 10w.Technology entirety merits and demerits adopt
The test that low pressure mode realizes energy-accumulating power station is converted to by high pressure, has taken into account the application of the low-voltage load technology of maturation simultaneously, be
Dilatation later and other performance tests are laid a good foundation, and the later maintenance cost of whole equipment is greatly reduced.
Embodiment one:
As shown in Fig. 2 energy-accumulating power station test load further comprises electric quantity acquisition module, protection module, working power
Control module, manipulation and display module and radiating module.Wherein electric quantity acquisition module be respectively connected to defeated after low pressure and high-voltage acquisition
Go out to main control module；Protection module is connected with main control module；Main control module is connected with manipulation and display module；Described working power
Control module inputs civil power, and its output is connected with main control module and radiating module, for for master control module for power supply and according to its control
System drives radiating module work.
Embodiment two:
As shown in figure 3, further, above-mentioned middle radiating module includes fan governor, the Thermal protection relay being sequentially connected
Device permutation and cooling fan permutation；Described fan governor is connected with working power control module.
Further, above-mentioned middle electric quantity acquisition module includes the first electric quantity acquisition unit, first voltage transformer, the first electricity
Current transformer, the second electric quantity acquisition unit, second voltage transformer, the second current transformer；Described high pressure passes through first respectively
Voltage transformer, the first current transformer access the first electric quantity acquisition unit, and the first electric quantity acquisition unit accesses main control module；Institute
State low pressure and pass through second voltage transformer, second current transformer access the second electric quantity acquisition unit respectively.
Embodiment three:
Above-mentioned protection module includes temperature sensor.Can be to the operating temperature of load blocks, environment by temperature sensor
Temperature is monitored, it is to avoid its over loading operates.
Example IV:
Further, in above-mentioned, the impedance load array of load blocks includes multichannel impedance branch, each impedance branch bag
Include resistance, catalyst and the fuse of series connection；The inductive reactance array of described load blocks includes multichannel impedance branch, each sense
Anti- branch road includes inductance, catalyst and the fuse connected.
Can be devoted oneself to work according to control this road resistance of switching, inductance by this catalyst, and fuse then can be to each branch road
Protected respectively.
Embodiment five:
In above-mentioned, load blocks may also include capacitive reactance load.Lc resonance band can be realized carry, realize anti-isolated island test work(
Energy.
Embodiment six:
Main control module passes through middle control relay array and connects load blocks, can be controlled by centre by this main control module
Relay load blocks are carried out the control of switching.
Embodiment seven:
As shown in figure 4, the impedance load array of described load blocks and inductive reactance array include single-phase low-power group 41,
Single-phase high-power group 42 and Three-phase high-power group 43.Impedance load array and inductive reactance array are divided into different three groups herein
It is advantageous in that single-phase low-power group can achieve that fine tuning, single-phase high-power then can achieve that three-phase imbalance loads and Three-phase high-power
Realize high-power loading.
Embodiment eight:
In said structure, described high pressure is not less than 10kv, and described low pressure is not higher than 400v.It is particularly suitable for by this this programme
Apply in 400v electric pressure, the energy-accumulating power station of 10kv electric pressure, realizing load blocks can three-phase imbalance state band carry, and
Minimum adjustment stride can reach the application requirement of 10w.
Embodiment nine:
It is in security consideration, equipment carries resistance overheat protector, each loop short-circuit protection, power upper limit protection, overvoltage
Protection, personnel enter protection, interference prevention, fan protection, inductance surge protection etc..
1) load built-in control circuit built-in over-voltage protective plate, when monitoring that voltage exceedes setting value, automatic separating loads
2) overcurrent protection adopts fuse hardware protection and software to carry power upper limit and protect, when electric current more than preset value is
Stop loading.
3) smoke alarm unit is arranged on inductive load top, when monitoring smog alarm, and stops loading and reports to the police.
4) radiator fan air outlet installs wind speed detection system, when wind speed is less than protection value it is impossible to load.
5) temperature protective device is arranged in resistance box, when resistance box temperature is more than 120 degree, reports to the police and shuts down.
6) insulating monitoring is arranged between 10kv pt and casing, monitors that insulation is less than thresholding, reports to the police and stop to load.
Insulation monitoring principle is: discontinuity sends voltage signal, and whether detection leakage current exceedes setting.
Embodiment two specific example:
Electric quantity acquisition module is realized by current transformer pt and current transformer ct to high and low pressure side parameter acquisition.?
In one alternative:
High-pressure side 10kv parameter acquisition adopts pt and ct of 10kv, and pt adopts 10k/400v no-load voltage ratio, and ct is using by formula
High accuracy ct, is connected by bronze medal, and precision is 0.2%.
Low-pressure side 400v parameter acquisition, is directly adopted using 400v, and ct adopts the no-load voltage ratio of 1000:5, realizes 0-1000a electric current and adopts
Collection, precision is 0.2%
High and low pressure side is equipped with the electrical parameter analytical table with mc metering mark, the test voltage at two ends, electric current, has
Work(, the idle, parameter such as power factor (PF), imbalance of three-phase voltage.
Embodiment seven specific example:
This example is directed to 400v electric pressure, the energy-accumulating power station of 10kv electric pressure, wherein:
1st, resistive load power distribution is:
Single-phase: 0.01-0.1kw, 0.1-1kw, 1-10kw, 10-20kw, (a phase, b phase, c phase 31.1kw respectively)；Three-phase
Total: 93.3kw
Three-phase: 10kw, 20kw, 30kw, 50kw, 100kw, 200kw；
Amount to: 503.3kw
The regulation of minimum 10w stepping can be realized and carry it is also possible to realize three-phase imbalance band.
2nd, the power distribution of inductive load:
Single-phase: 0.01-0.1kvar, 0.1-1kvar, 1-10kvar, 10-20kvar, (a phase, b phase, c phase are respectively
31.1kva)；Three-phase adds up to: 93.3kvar
Three-phase: 10kvar, 20kvar, 30kvar, 50kvar, 100kvar, 200kvar；
Amount to: 503.3kvar
The regulation of minimum 0.01kvar stepping can be realized and carry it is also possible to realize three-phase imbalance band, can bear with capacitive
When isolated island test is realized in load cooperation, the requirement that three phase resonances are adjusted.
The power distribution that capacitive load can be increased is: single-phase: 0.01-0.1kvar, 0.1-1kvar, 1-10kvar,
10-20kvar, (a phase, b phase, c phase 31.1kva respectively)；Three-phase adds up to: 93.3kvar
Three-phase: 10kvar, 20kvar, 30kvar, 50kvar, 100kvar, 200kvar；
Amount to: 503.3kvar
Below this patent is applied and provides a specific example:
, it is electric taking pressure energy-storage system in south electric network 863 project energy storage problem demonstration project 2mw/10kv as a example for this example
Pressure grade is 10kv, and rated power is 2mva, and energy storage system capacity is 2mwh, mainly by accumulator, battery management system
(bms), the composition such as energy conversion system (pcs), monitoring system.Wherein, 2mw/10kv power conversion system (pcs) takes cascade
The topological structure of h bridge, primary circuit adopts Y-connection.The existing 4mw/400v low pressure energy-storage system that put into operation, electric pressure is
400v, rated power is 4mva, and energy storage system capacity is 16mwh, mainly by accumulator, battery management system (bms), energy
Converting system (pcs), monitoring system etc. form, and boost to 10kv using energy conversion system (pcs) and transformator connected mode.
It is that in cooperation 2mw/10kv, pressure energy-storage system and 4mw/400v low pressure energy-storage system carry out performance test, as load access 10kv
Bus isolated power grid builds test platform, below special develop the energy storage electricity meeting test request and matching with energy-storage system interface
Stand test load.
Overall product is by: container body, the 400v/10kv transformator of 800kva, 400v voltage accesses bronze medal, 10kv accesses
Row, 400v parameter measurement, 10kv parameter measurement, 503.3kw electric resistance array, 503.3kva electric inductance array, resistance sense array access abb
Contactor group, multifinger contactor panel, resistance sense array access the protection such as overcurrent protection fuse, overvoltage, excess temperature, gate inhibition and control
Plate, resistive dissipation fan group, inductance radiator fan group, Non-follow control case, remotely controlling computer, control software, system control joins
Electricity etc. forms.
1st, structure design: resistive load array and inductive load array combination using 400v realize resistance sense power from 0-
503.3kw (kva) continuously adjustabe, the access of 10kv realized by the transformator that rear end adds 400v/10kv.
2nd, directly using 20 chi TEU (Twenty-foot Equivalent Unit)s, (the 6m standard container customizing, external dimensions is carrying case: 6058*2438*
2591mm), container front portion adopts double door, facilitates the equipment such as transformator to install.It is designed with high voltage line inlet on door, and install
There is high pressure edge lasso, packaging box back is electric resistance array installation site, lower end is designed with the shutter of three side motor switches,
The corresponding container top of electric resistance array is air outlet, and is provided with automatic lifting rain insensitive device.It is 400v wiring copper in the middle part of side
Board, parameter measurement table, communication interface, control power interface and cat ladder etc..The box house module of container adopts cabinet type group of screen
Close, reserve capacitive load position, transformator is independently installed.
Specifically, it is transversely mounted in box house transformator, away from container both sides 400mm safe distance；Low pressure wiring cabinet
It is arranged on away from transformator 580mm position, higher-pressure region is isolated by high-low pressure isolated screen with area of low pressure, and inductive load is arranged on and leans on
The low-pressure area side of nearly high-low pressure isolated screen, ohmic load is arranged on the area of low pressure one near container afterbody for the heat emission fan top
Side, and electric capacity installation site is reserved at inductive load top, by the loading position of reserved capacitive load so that product future is permissible
Easily escalate into rlc load, be applied to the anti-isolated island testing inspection of energy-accumulating power station.Additionally, equipment carries in container afterbody
Warning lamp, can point out energising, operation, three kinds of states of fault.The design of casing line is then: high tension cable wire inlet-outlet and high pressure
Cable protective kit, high-voltage connection adopts porcelain knob to insulate, and 400v specification is pressed in low-pressure side insulation.Earth point includes: high tension cable crust
Earthing bar, container contact, 400v outlet earth point row, device interior earth point links together.
3rd, the mode of connection: 400v input adopts wye connection, three-phase four-wire system, 10kv input adopt angle-style connection,
Three-phase three-wire system, lug, 400v adopts side windowing bronze medal to connect, and 10kv adopts packaging door opening, and configuration high tension cable is exhausted
Edge circle, enters container, is connected to transformator bronze medal.
4th, power designs: the power band meeting 500kw energy-accumulating power station carries, design resistive 503.3kw, perceptual 503.3kva,
Apparent energy is 711.67kva, and the power of 10kv transformator is 800kva.
This transformator needs to meet the working condition of peak power, and the peak power rising buckling is: 711.77kva it is considered to
Volume and surplus, from the transformator of the 10kv/400v of 800kva, for the different electric pressure of reply, surplus three voltages of setting
Adjustment gear.
5th, parameter measurement: 400v terminal voltage, electric current, active, idle, power factor (PF) etc., 10kv terminal voltage, electric current, active,
Idle, power factor (PF), loads that parameter can show in gauge outfit, Non-follow control case screen shows, remote computer shows.
6th, control mode: remote computer controls (computer control is divided into manual loading and preset curve to load), local control
Case controls various ways such as (hand switch control, computer controls).
7th, the control of equipment and operation power supply adopt 220v/50hz.
Above-mentioned design reference to standard:
1) gb/t 191 packaging--pictorial marking for handling of goods
2) gb/t 2423.1 electric and electronic product Essential Environment testing regulationss test a: low-temperature test method (gb/t
2423.1-2001, idt iec 60068-2-1:1990)
3) gb/t 2423.2 electric and electronic product Essential Environment testing regulationss test b: hot test method (gb/t
2423.2-2001, idt iec 60068-2-2:1974)
4) gb/t 2423.3 electric and electronic product environmental test part 2 test method test cab: steady-state damp heat test
5) gb/t 2423.10 electric and electronic product Essential Environment testing regulationss test fc: vibration (sinusoidal)
6) gb 4208 shell protection grade (ip code)
7) gbt 1094.2-1996 power transformer part 2 temperature rise
8) gb 6450-86 dry-type power transformer
9) gb/t 4365-2003 electrotechnical terminology electromagnetic compatibility
10) gb/t 17626.2 EMC test and the test of e measurement technology esd immunity
11) gb/t 17626.3 EMC test and e measurement technology radio frequency electromagnetic field radiation immunity experiment
12) gb/t 17626.4 EMC test and e measurement technology electrical fast transient (eft) immunity experiment
13) gb/t 17626.5 EMC test and e measurement technology surge (impact) immunity experiment
14) the conduction interference immunity to interference of gb/t 17626.6 EMC test and the sensing of e measurement technology radio-frequency field
15) gb/t 17626.11 EMC test and e measurement technology voltage dip, short interruptions and change in voltage is anti-
Degree of disturbing is tested
16) emission standard in the inhabitation of gb 17799.3 Electromagnetic Compatibility General standard, business and Light Industrial environment
17) emission standard in gb 17799.4 Electromagnetic Compatibility General standard industry environment
18) the general technical conditions of gb/t 13384-2008 electronic product packaging
19) gb/t 14436 industrial products ensure file general provisions
20) overvoltage protection of dl/t 620-1997 alternating-current electric device and Insulation Coordination
21) gjb 2815-97 military engine load general specification
22) the military exchange of gjb 235a-97 mobile load general specification
23) gjb 235-87 work, intermediate frequency mobile load general technical specifications
24) q/gdw676-2011 energy-storage system accesses power distribution network test specification.
Summary:
According to the characteristic of actual electric network, used for reference electrical network process of distributing electricity is all through too high-medium-low distribution to the art of this patent
Transformation process, is ultimately converted to the thinking of civil power, is also adopted by being converted to by high pressure low in the design of this energy-accumulating power station test load
Pressure mode realizes the test of energy-accumulating power station.Especially set out for using load by the design of low pressure 400v electric pressure.Energy storage electricity
10kv high pressure of standing first is transformed into 400v low pressure by the transformator through a 800kva, is then attached to the load of 400v electric pressure
Cabinet.All kinds of problems in background technology are overcome by the design of the present invention program, completely solves 10kv energy-accumulating power station and survey
Why inscribe, and whole equipment size can control completely in 6m container, and three-phase imbalance state band can be realized and carry, minimum
Adjustment stride 10w etc. requires.Simultaneous with the input port of 400v and 10kv, two voltages can be directly accessed.Low pressure is born
Load technology also comparative maturity relatively, is later dilatation and other performance tests are laid a good foundation, and the later maintenance of whole equipment becomes
Originally it is greatly reduced.
The foregoing is only embodiments of the invention, not thereby limit the present invention the scope of the claims, every using this
Equivalent structure or equivalent flow conversion that bright description and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (9)
1. a kind of energy-accumulating power station test load it is characterised in that: it includes transformator, load blocks and main control module；Described change
Depressor inputs high pressure, and output low pressure is connected into load blocks；Described load blocks include impedance load array, inductive reactance array；
Described main control module be connected with load blocks control load blocks in impedance load array and/or inductive reactance array throwing
Cut；It also includes electric quantity acquisition module, protection module, working power control module, manipulation and display module and radiating module；Its
Middle electric quantity acquisition module is respectively connected to low pressure and high pressure, exports to main control module after collection；Protection module is connected with main control module；
Main control module is connected with manipulation and display module；Described working power control module inputs civil power, its output and main control module and
Radiating module is connected, and controls driving radiating module work for for master control module for power supply and according to it.
2. energy-accumulating power station test load as claimed in claim 1 it is characterised in that: described radiating module includes being sequentially connected
Fan governor, hot protective relay array and cooling fan array；Described fan governor and working power control module phase
Even.
3. energy-accumulating power station test load as claimed in claim 1 it is characterised in that: described electric quantity acquisition module include first electricity
Amount collecting unit, first voltage transformer, the first current transformer, the second electric quantity acquisition unit, second voltage transformer, second
Current transformer；Described high pressure passes through first voltage transformer respectively, the first current transformer accesses the first electric quantity acquisition unit,
First electric quantity acquisition unit accesses main control module；Described low pressure is connect by second voltage transformer, the second current transformer respectively
Enter the second electric quantity acquisition unit.
4. energy-accumulating power station test load as claimed in claim 1 it is characterised in that: described protection module includes temperature sensing
Device.
5. energy-accumulating power station test load as claimed in claim 1 it is characterised in that: the impedance load array of described load blocks
Including multichannel impedance branch, each impedance branch includes resistance, catalyst and the fuse connected；The induction reactance of described load blocks
Load array includes multichannel impedance branch, and each induction reactance branch road includes inductance, catalyst and the fuse connected.
6. energy-accumulating power station test load as claimed in claim 1 it is characterised in that: described load blocks also include capacitive reactance bear
Carry.
7. energy-accumulating power station test load as claimed in claim 1 it is characterised in that: described main control module passes through middle control and continues
Electrical equipment array connects load blocks.
8. energy-accumulating power station test load as claimed in claim 1 it is characterised in that: the impedance load array of described load blocks
And inductive reactance array includes single-phase low-power group, single-phase high-power group and Three-phase high-power group.
9. energy-accumulating power station test load as claimed in claim 1 it is characterised in that: described high pressure is not less than 10kv, described low
Pressure is not higher than 400v.
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| CN104236699A (en) * | 2014-10-10 | 2014-12-24 | 天津学子电力设备科技有限公司 | Simulation load vibration test method of transformer |
| CN104810728B (en) * | 2015-04-22 | 2017-08-15 | 新余宇浩科技发展有限公司 | Intelligent touch distribution box |
| CN108828378A (en) * | 2018-09-10 | 2018-11-16 | 国网河北省电力有限公司电力科学研究院 | A kind of anti-isolated island detecting device of multi-voltage grade |
| CN109613331B (en) * | 2018-12-19 | 2020-11-24 | 广东电网有限责任公司 | Load detection method and method for alternating current charging pile based on double-load array |
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| CN201956727U (en) * | 2011-03-28 | 2011-08-31 | 国电南瑞科技股份有限公司 | Heavy current and constant current discharging device of parallel type storage battery |
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| JP2007529854A (en) * | 2004-03-15 | 2007-10-25 | ハイドロジェニクス コーポレイション | Test station for fuel cell power module |
| CN101873061B (en) * | 2009-04-21 | 2013-11-06 | 鸿富锦精密工业（深圳）有限公司 | Power supply system |
| CN201409000Y (en) * | 2009-04-30 | 2010-02-17 | 比亚迪股份有限公司 | Energy storage power station |
| CN201765310U (en) * | 2010-01-26 | 2011-03-16 | 南京工业大学 | Intelligent circulating charge and discharge test device for battery |
| CN103257297B (en) * | 2013-05-10 | 2015-06-10 | 电子科技大学 | System and method for testing dynamic energy exchange performance of electricity energy-storing device |
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| CN201956727U (en) * | 2011-03-28 | 2011-08-31 | 国电南瑞科技股份有限公司 | Heavy current and constant current discharging device of parallel type storage battery |
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