CN203930016U - A kind of storage battery discharge tester - Google Patents
A kind of storage battery discharge tester Download PDFInfo
- Publication number
- CN203930016U CN203930016U CN201420268019.XU CN201420268019U CN203930016U CN 203930016 U CN203930016 U CN 203930016U CN 201420268019 U CN201420268019 U CN 201420268019U CN 203930016 U CN203930016 U CN 203930016U
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- discharge unit
- electron discharge
- current
- discharge
- storage battery
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- 238000010438 heat treatment Methods 0.000 claims description 19
- 230000005855 radiation Effects 0.000 claims description 14
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 8
- 230000003321 amplification Effects 0.000 description 10
- 238000003199 nucleic acid amplification method Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009711 regulatory function Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of storage battery discharge tester, comprise discharge cell and set current unit, between described discharge cell and described setting current unit, automatic adjustment unit is set.Described discharge cell comprises many groups electron discharge unit group in parallel, described electron discharge unit group comprises the electron discharge unit of multiple parallel connections, described electron discharge unit comprises the triode of multiple series connection, an and resistance of the base stage of each triode serial connection, described electron discharge unit group and described electron discharge unit are respectively equipped with pre-amplifying module, and the described pre-amplifying module utmost point is serially connected with adjustable resistance.Amplify by three grades of sharing control and secondary, effectively solve the current-unbalance coefficient of triode in discharge cell, realize the consistance current-sharing between electron discharge unit and electron discharge unit group simultaneously, greatly improved the stability of discharge current and the precision of accumulator electric capacity test.Automatically adjusting, simple and convenient, has greatly reduced operating personnel's labour intensity.
Description
Technical field
The utility model relates to a kind of testing tool of accumulator capacity, relates in particular to a kind of storage battery discharge tester.
Background technology
At present; the direct current operative power source of the accumulators store electric energy that generating plant and transformer station generally all adopt; can regard the independent current source with generating plant and transforming plant primary system independence as; can make the power supply architecture of operation and protection use simplify; the in the situation that of breaking down in generating plant and transformer station that even AC power disappears completely; accumulator straight-flow system still can reliably working, effectively ensures the power supply reliability of straight-flow system.In addition, because battery tension is steady, capacity is larger, larger dash current therefore can provide breaker closing time, and can be used as the standby power supply of accident protective load.
Accumulator capacity Q test is to utilize 10 hours discharge rate I of accumulator
10fdwith hourage t discharge time
fdproduct.220kV transformer station and part 110kV transformer station adopt two group storage batteries, in the time of accumulator regular inspection, first two groups of straight-flow system parallel connections, then, a group storage battery disengaging straight-flow system wherein, adopt 10 hours discharge rate I
10electric discharge, in the time setting electric current, because instrument is accurate not, often to rule of thumb suitably strengthen a bit or reduce a bit, bad assurance, need repeatedly repeat switch machine to debug, in switching on and shutting down process several times, accumulator more or less discharges, and along with the carrying out of discharging, the voltage of accumulator is declining always, and its discharge current is also changing, then uses discharge current I
10fdbe multiplied by t discharge time
fdcalculate discharge capacity just not accurate enough, cause larger error, even erroneous judgement.
For the accumulator that can not depart from straight-flow system, before electric discharge, must first measure load current, with 10 hours discharge rate I of accumulator
10fddeduct load current and calculate discharge current, then weigh and banish electricity.Load current often has certain fluctuation, stable not, and the discharge current after discharge instrument is set is invariable.Due to the fluctuation of load current, so just cause the many electric discharges of accumulator or few electric discharge, cause measuring error to strengthen, qualified battery also can be mistaken for defective battery sometimes.
In addition, the heater element of the discharge instrument on market is ceramic resistor now, along with the operation of equipment, internal heating element is constantly oxidized, hydraulic performance decline, in discharge process, along with temperature rising discharge current is also in continuous variation, need to repeatedly set to debug, cause and measure inaccurate and increase labour intensity etc.
Above various reasons, the error that all causes accumulator easily to be tested is larger, badly influences the accuracy of test result and the judgement to accumulator property.
Utility model content
The purpose of this utility model is for above-mentioned the deficiencies in the prior art, and a kind of storage battery discharge tester with automatic adjusting is provided, and automatically adjusts according to discharge current size, reduces measuring error, reduces labour intensity.
For realizing the technical scheme that the purpose of this utility model adopts be: a kind of storage battery discharge tester, comprise discharge cell and set current unit, between described discharge cell and described setting current unit, automatic adjustment unit is set, described discharge cell comprises many groups electron discharge unit group in parallel, described electron discharge unit group comprises the electron discharge unit of multiple parallel connections, described electron discharge unit comprises the triode of multiple series connection, an and resistance of the base stage of each triode serial connection, described electron discharge unit group and described electron discharge unit are respectively equipped with pre-amplifying module, the described pre-amplifying module utmost point is serially connected with adjustable resistance.
Described automatic adjustment unit comprises the shunt resistance, loop resistance and the operation amplifier module that connect successively.
Described setting current unit comprises the integrated circuit, capacitor and the resistance that connect successively.
Described discharge cell is provided with automatic heat radiation mechanism.
Described automatic heat radiation mechanism comprises temperature inductor, heating radiator and controller.
Described automatic heat radiation mechanism comprises the temperature inductor and the heating radiator that are arranged on each electron discharge unit group, and described temperature inductor is all connected with same controller with described heating radiator.
Described automatic heat radiation mechanism comprises the temperature inductor and the heating radiator that are arranged on each electron discharge unit, and described temperature inductor is all connected with same controller with described heating radiator.
Discharge instrument of the present utility model is in the time of test accumulator capacity, and the first step need to first be set discharge current, then could discharge.As the VRLA battery of model FM500AH, needing the discharge current of setting is 50A, and therefore discharge instrument is set current unit and is also set as 50A, for realizing the size electric discharge of electric current of 50A.The Automatic Control Theory of the utility model discharge instrument is: when battery discharging, discharge current flows out from battery pack is anodal, on average by each electron discharge unit to shunt positive pole, then get back to battery pack negative pole from shunt.Automatic adjustment unit is by the anodal current signal gathering in discharge loop of shunt, and arrive operation amplifier module negative pole by loop resistance, form negative feedback, compare with the setting current signal of setting current unit, after operation amplifier resume module, form the pre-amplifying module that regulates current signal to output to each electron discharge unit group, after amplifying regulation and control by one-level, output to again the pre-amplifying module of each electron discharge unit, exchange current signal and carry out secondary amplification adjusting, amplify after adjusting by secondary, output to the base stage of triode, the base stage of each triode is further amplified regulation and control in the ratio of setting after receiving and regulating current signal, finally realize discharge current and set the consistent object of electric current, reach the control accurate to discharge cell, make discharge current stable, accurately, improve measuring accuracy.
The application's storage battery discharge tester needs larger electric current according to battery discharging test, can adopt GTR large power triode, simultaneously, adopt several even tens electron discharge unit parallel connections of being connected by GTR triode to realize compared with heavy-current discharge, main discharge circuit and control circuit are all greatly simplified, the GTR of low-voltage is cheap, contributes to reduce costs; By automatic adjustment unit being set between discharge cell and setting current unit, gather the actual discharge electric current in discharge cell by automatic adjustment unit, compare with the setting discharge current of setting current unit, thereby discharge cell is sent to adjusting current signal immediately, realize the regulation and control to actual discharge electric current in discharge cell, thereby make discharge current stable, accurate, improve accuracy and the degree of accuracy of accumulator accumulation of energy test, automatically adjusting, simple and convenient, has greatly reduced operating personnel's labour intensity.Simultaneously, the equal flow problem that the application solves multiple electron discharges unit parallel connection is one of gordian technique, because the triode in discharge process does not run on off state, but run on linear magnifying state, applicant is by the base stage of each triode in each the electron discharge unit larger resistance of relative triode interpolar resistance of connecting, make the interpolar of triode negligible, make each triode performance of each electron discharge unit be tending towards identical, the bigger error of avoiding the error existing between same model triode to cause electric current to regulate, thereby not only realize between each triode balanced consistent, and make performance between each electron discharge unit be tending towards identical, thereby effectively realize the balance current-sharing between each electron discharge unit, simultaneously, applicant arranges pre-amplifying module on each electron discharge unit, on pre-amplifying module, be connected in series adjustable resistance simultaneously, on the one hand, not only effectively improve discharge power, on the other hand, on the convergent basis of realizing the balanced shunting in each electron discharge unit of each triode performance, further realize the adjusting control to the equilibrium shunting between each electron discharge unit, improve the current-sharing consistance between electron discharge unit, heavier is, applicant arranges pre-amplifying module and adjustable resistance in each electron discharge unit group, on the basis of the balanced shunting of front two-stage, realize further again the balanced shunt regulating control between each electron discharge unit group, coordinated mutually, realize the Collaborative Control regulatory function that three grades of current-sharings of discharge cell and secondary amplify, greatly improved stability, the precision of discharge current.In addition, each electron discharge unit group, each electron discharge unit set temperature inductor and cooling mechanism respectively even, and control by same controller is unified, effectively improve on the one hand radiating efficiency, the grouping temperature having on the other hand does not reach setting exothermic temperature, can dispel the heat, avoid unnecessary heat radiation, make each electron discharge unit group all remain on same relative stationary temperature with each electron discharge unit.
Brief description of the drawings
Below in conjunction with accompanying drawing, the utility model is described further:
Fig. 1 is circuit principle structure schematic diagram of the present utility model.
Embodiment
As shown in Figure 1:
Embodiment mono-
A kind of storage battery discharge tester, comprise discharge cell 4 and set current unit 2, between described discharge cell 4 and described setting current unit 2, automatic adjustment unit 3 is set, described discharge cell 4 comprises many groups electron discharge unit group 5 in parallel, described electron discharge unit group 5 comprises the electron discharge unit 1 of multiple parallel connections, described electron discharge unit 1 comprises the GTR triode of multiple series connection, and a resistance R of the base stage of each GTR triode serial connection
b, the each electron discharge unit 1 in each electron discharge unit group 5 and each electron discharge unit group 5 is provided with pre-amplifying module, and the described pre-amplifying module utmost point is serially connected with respectively adjustable resistance R
eand R
d.Described pre-amplifying module can adopt the simplest amplifier tube, also can adopt conventional pre-amplification circuit, by apolegamy electron discharge unit 1 and preposition amplifier tube, or the amplification coefficient of electron discharge unit 1 and pre-amplification circuit, and apolegamy electron discharge unit group 5 and preposition amplifier tube, or the amplification coefficient of electron discharge unit group 5 and pre-amplification circuit, total current size between 1 of each electron discharge unit and each electron discharge unit group 5 is reached unanimity respectively, thereby realize between each electron discharge unit 1 and each electron discharge unit group 5 between the control of current-sharing consistance, and then realize the current constant of discharge cell, accurately.
Described automatic adjustment unit 3 comprises shunt resistance SH, the loop resistance Rc and the operation amplifier module that connect successively, described shunt resistance SH is arranged between described discharge cell 4 and tested accumulator, described operation amplifier module and each resistance R being connected on described electron discharge unit group 5 pre-amplifying modules
econnect.
Described setting current unit 2 comprises the integrated circuit, capacitor and the resistance that connect successively, and passes through resistance R
1be connected with described operation amplifier module.
Described discharge cell 4 is provided with automatic heat radiation mechanism, and described automatic heat radiation mechanism comprises temperature inductor, heating radiator and controller,
The base stage of each GTR triode of the present embodiment neutron discharge cell 1 resistance R b that all connects, by the base series resistor R at each triode
b, resistance R
bresistance is much larger than the interpolar resistance of triode, thereby the interpolar resistance of triode is ignored, and performance reaches unanimity.By configure preposition amplifier tube or pre-amplification circuit on each electron discharge unit group 5 and each electron discharge unit 1, amplification coefficient by apolegamy electron discharge unit group 5 with preposition amplifier tube or electron discharge unit group 5 and pre-amplification circuit, electron discharge unit 1 and preposition amplifier tube or electron discharge unit 1 and pre-amplification circuit, total current size between each 5 of electron discharge unit group and each electron discharge unit 1 is reached unanimity, thereby be conducive to realize current-sharing between 1 of each electron discharge unit and each electron discharge unit group 5, current-sharing consistance is more easily controlled.In addition, pre-amplifying module base input circuit in each electron discharge unit group 5 and each electron discharge unit 1 all arranges adjustable resistance Rd, on the one hand can effectively reduce the deviation that base-emitter voltage differences causes base current, the electrode current that makes to generate electricity in each electron discharge unit group 5 and each electron discharge unit 1 is basic identical; Meanwhile, on the other hand in the time that the full gain of each electron discharge unit group 5 or each electron discharge unit 1 is not identical, capable of regulating R
eand/or R
dthe generating electrode current that resistance is ordered about each electron discharge unit group 5 and each electron discharge unit 1 reaches unanimity.
In sum, the discharge cell 4 of numerous triode compositions in the present embodiment, the measure of controlling current-sharing is divided into three grades: the first order is the balancing performance by controlling each triode in each electron discharge unit 1, by base resistance R
brealize; The second level is the current-sharing between each electron discharge unit 1, by pre-amplifying module and the adjustable resistance R of each electron discharge unit 1
drealize; The third level is the current-sharing between each electron discharge unit group 5, by pre-amplifying module and the adjustable resistance R of each electron discharge unit group 5
erealize.Experiment shows, take after above-mentioned current-sharing measure, amplify by three grades of sharing control and secondary, effectively solve the current-unbalance coefficient of triode in discharge cell, realize the consistance current-sharing between 1 of electron discharge unit and electron discharge unit group 5 simultaneously, greatly improved the stability of discharge current and the precision of accumulator electric capacity test.
Embodiment bis-
The difference part of the present embodiment and embodiment mono-is: described automatic heat radiation mechanism comprises a controller, multiple temperature inductor and multiple heating radiator, a temperature inductor and a heating radiator are set respectively in each electron discharge unit group 5, and described temperature inductor is all connected with described controller with described heating radiator.The present embodiment, by each electron discharge unit group 5, corresponding temperature inductor and heating radiator being set respectively, can effectively improve radiating efficiency, and avoid unnecessary heat radiation, makes each electron discharge unit group 5 all remain on same relative stationary temperature.
Embodiment tri-
The difference part of the present embodiment and embodiment mono-is: each electron discharge unit 1 is provided with temperature inductor and heating radiator, and described temperature inductor is all connected with same controller with described heating radiator.The present embodiment, by each electron discharge unit 1, corresponding temperature inductor and heating radiator being set respectively, further effectively improves radiating efficiency, avoids unnecessary heat radiation, makes each electron discharge unit 1 all remain on same relative stationary temperature.
Claims (7)
1. a storage battery discharge tester, it is characterized in that: it comprises discharge cell and sets current unit, between described discharge cell and described setting current unit, automatic adjustment unit is set, described discharge cell comprises many groups electron discharge unit group in parallel, described electron discharge unit group comprises the electron discharge unit of multiple parallel connections, described electron discharge unit comprises the triode of multiple series connection, an and resistance of the base stage of each triode serial connection, described electron discharge unit group and described electron discharge unit are respectively equipped with pre-amplifying module, the described pre-amplifying module utmost point is serially connected with adjustable resistance.
2. storage battery discharge tester as claimed in claim 1, is characterized in that: described automatic adjustment unit comprises the shunt resistance, loop resistance and the operation amplifier module that connect successively.
3. storage battery discharge tester as claimed in claim 1 or 2, is characterized in that: described setting current unit comprises the integrated circuit, capacitor and the resistance that connect successively.
4. storage battery discharge tester as claimed in claim 3, is characterized in that: described discharge cell is provided with automatic heat radiation mechanism.
5. storage battery discharge tester as claimed in claim 4, is characterized in that: described automatic heat radiation mechanism comprises temperature inductor, heating radiator and controller.
6. storage battery discharge tester as claimed in claim 5, it is characterized in that: described automatic heat radiation mechanism comprises the temperature inductor and the heating radiator that are arranged on each electron discharge unit group, and described temperature inductor is all connected with same controller with described heating radiator.
7. storage battery discharge tester as claimed in claim 5, is characterized in that: described automatic heat radiation mechanism comprises the temperature inductor and the heating radiator that are arranged on each electron discharge unit, and described temperature inductor is all connected with same controller with described heating radiator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420268019.XU CN203930016U (en) | 2014-05-23 | 2014-05-23 | A kind of storage battery discharge tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420268019.XU CN203930016U (en) | 2014-05-23 | 2014-05-23 | A kind of storage battery discharge tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203930016U true CN203930016U (en) | 2014-11-05 |
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ID=51825813
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420268019.XU Expired - Lifetime CN203930016U (en) | 2014-05-23 | 2014-05-23 | A kind of storage battery discharge tester |
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| Country | Link |
|---|---|
| CN (1) | CN203930016U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007393A (en) * | 2014-05-23 | 2014-08-27 | 国网河南省电力公司漯河供电公司 | Storage battery discharge tester and discharge current regulating and controlling method thereof |
| CN109314286A (en) * | 2016-06-06 | 2019-02-05 | 埃尔塞尔有限公司 | Test battery station at least one electrochemical test cell |
-
2014
- 2014-05-23 CN CN201420268019.XU patent/CN203930016U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007393A (en) * | 2014-05-23 | 2014-08-27 | 国网河南省电力公司漯河供电公司 | Storage battery discharge tester and discharge current regulating and controlling method thereof |
| CN104007393B (en) * | 2014-05-23 | 2017-02-08 | 国网河南省电力公司漯河供电公司 | Storage battery discharge tester and discharge current regulating and controlling method thereof |
| CN109314286A (en) * | 2016-06-06 | 2019-02-05 | 埃尔塞尔有限公司 | Test battery station at least one electrochemical test cell |
| CN109314286B (en) * | 2016-06-06 | 2022-03-29 | 埃尔塞尔有限公司 | Test cell station for at least one electrochemical test cell |
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| GR01 | Patent grant |