CN207703999U - A kind of electric system accumulator cell essential resistance on-line measurement device - Google Patents

A kind of electric system accumulator cell essential resistance on-line measurement device Download PDF

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Publication number
CN207703999U
CN207703999U CN201721638605.9U CN201721638605U CN207703999U CN 207703999 U CN207703999 U CN 207703999U CN 201721638605 U CN201721638605 U CN 201721638605U CN 207703999 U CN207703999 U CN 207703999U
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China
Prior art keywords
relay
accumulator
control
module
terminal
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CN201721638605.9U
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Chinese (zh)
Inventor
金烂聚
杨鸿珍
王云烨
贺琛
吴慧
简伟华
沈远飞
方晴程
赵加利
沈爱敏
卢晓帆
张新荣
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State Grid Corp of China SGCC
Information and Telecommunication Branch of State Grid Zhejiang Electric Power Co Ltd
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State Grid Corp of China SGCC
Information and Telecommunication Branch of State Grid Zhejiang Electric Power Co Ltd
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Priority to CN201721638605.9U priority Critical patent/CN207703999U/en
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Abstract

The utility model is intended to provide a kind of electric system accumulator cell essential resistance on-line measurement device, to solve the problems in prior art, to reduce cost.Including processing module, control module, voltage acquisition module, current acquisition module, discharge circuit, voltage collection circuit;The control module includes several acquisition control output ends, and acquisition control output end is connected with the control terminal of the control terminal of the first relay, the control terminal of the second relay, the control terminal of third relay and the 4th relay respectively;The processing module is connected with voltage acquisition module and current acquisition module respectively.Advantageous effects:The control terminal of the first relay, the break-make of the control terminal of the second relay, the control terminal and the 4th relay of third relay can be controlled by control module, allow control module to get the voltage and discharge current of specified tested accumulator, and then reduces cost.

Description

A kind of electric system accumulator cell essential resistance on-line measurement device
Technical field
The utility model is related to electric system, and in particular to a kind of electric system accumulator cell essential resistance on-line measurement device.
Background technology
Accumulator group is the important composition equipment of direct current operative power source of substation system, is that load carries exchanging the when of having a power failure For uninterrupted power supply, with the raising of substation's grade, the capacity of accumulator is in be incremented by state, and the expense of accumulator also presents Increase curve, accumulator group is far longer than expense proportion shared by rectifier power source in the expense proportion of complete equipment.As intelligence becomes The popularization construction of power station technology and unattended operation transformer station, it is one important to carry out effective monitoring for accumulator property Project.
Accumulator internal resistance is one of the important parameter for embodying battery performance, by the study found that accumulator capacity and health State has close relationship with internal resistance, therefore by the variation of internal resistance, realizes to the on-line monitoring of accumulator it is to generally acknowledge at present One of the preferred plan of battery service.The internal resistance of accumulator generally all very little, only tens milliohms even several milliohms, with friendship The signal for flowing injection method measurement is very faint, and the noise being electrically charged in device and environment is flooded, and general internal resistance test device It is seldom to test way, is that independent equipment is difficult to be connected with substation detecting system.
Notification number is CN202815191U- accumulator internal resistance measuring devices, including CPU, discharge control device, electric discharge mould Block, analog/digital conversion device, current sampling device and voltage sampling apparatus;Two input terminals of voltage sampling apparatus respectively with electric power storage The positive and negative electrode in pond connects, and output end is connect with the input terminal of analog/digital conversion device;One end of current sampling device and accumulator Anode connection, the other end connects discharge module by a relay switch and is connected to the cathode of accumulator;Control of discharge fills The output end of the input terminal and analog/digital conversion device set is all connected to CPU;Wherein, the control terminal of relay switch is controlled with electric discharge The output end of device processed connects.The accumulator internal resistance measuring device can not only measure the internal resistance of small-capacity cells, not damage The electrode of battery, and on-line testing is not influenced by charger and battery selfcapacity, and high certainty of measurement, speed are fast.It is not Foot is:Discharge control device is only capable of controlling single relay, and accumulator internal resistance measuring device is only capable of detecting single accumulator, when When needing to test other accumulators in accumulator group, CPU can not get other battery tensions and electric discharge in accumulator group Electric current, then can not in calculating accumulator group other accumulators internal resistance;If necessary to other accumulators in calculating accumulator group Internal resistance, it is necessary to multiple accumulator internal resistance measuring devices, cost are higher.
Utility model content
The utility model is intended to provide a kind of electric system accumulator cell essential resistance on-line measurement device, to solve prior art side The problems in case, to reduce cost.
In order to realize the purpose, a kind of electric system accumulator cell essential resistance on-line measurement device, for measuring accumulator group In each accumulator, including processing module, control module, voltage acquisition module and current acquisition module;
Each accumulator is respectively connected with a discharge circuit, and the discharge circuit includes:The first discharging terminals for being sequentially connected in series, First relay, current acquisition module collection terminal, the second relay, discharge resistance and the second discharging terminals;First electric discharge Terminal setting is arranged in accumulator one end, second discharging terminals in the accumulator other end;
Each accumulator is respectively connected with a voltage collection circuit, and the voltage collection circuit includes:First be sequentially connected in series Acquire terminal, third relay, voltage acquisition module collection terminal, the 4th relay and the second acquisition terminal;First acquisition Terminal setting is arranged in accumulator one end, the second acquisition terminal in the accumulator other end;
The control module includes several acquisition control output ends, the control with the first relay respectively of acquisition control output end End processed, the control terminal of the second relay, the control terminal of third relay are connected with the control terminal of the 4th relay;
The processing module is connected with voltage acquisition module and current acquisition module respectively.
Preferably, the relay is solid-state relay.
Preferably, first relay both ends are parallel with varistor.
Preferably, second relay both ends are parallel with varistor.
Preferably, it is in series with self-recovery fuse between first discharging terminals and the first relay.
Preferably, the processing module is connected with communication module.
Preferably, the processing module is connected with display device.
Following advantageous effects can be obtained by implementing the utility model:Can by control module control first after The break-make of the control terminal of electric appliance, the control terminal of the second relay, the control terminal of third relay and the 4th relay, and then control The break-make of the voltage collection circuit and discharge circuit that are connect with specified tested accumulator;Make voltage acquisition module and current acquisition Module can acquire the voltage and discharge current of specified tested accumulator;I.e. processing module can get specified tested accumulator Voltage and discharge current so that for test storage battery internal resistance when, it is not necessary that multiple accumulator internal resistance measuring devices are arranged, into And reduce cost.
Description of the drawings
Fig. 1 is the connection diagram of the utility model;
Fig. 2 is the circuit connection diagram of the utility model.
Specific implementation mode
For the ease of the understanding of those skilled in the art, the utility model is made with reference to specific embodiment further Explanation:
Embodiment 1:
The utility model provides a kind of electric system accumulator cell essential resistance on-line measurement device, for measuring in accumulator group Each accumulator, as depicted in figs. 1 and 2, including processing module 1, control module 2, voltage acquisition module 3 and current acquisition mould Block 4;
Each accumulator is respectively connected with a discharge circuit 5, and the discharge circuit 5 includes:The first discharge end being sequentially connected in series Sub 51, first relay 52, current acquisition module collection terminal 53, the second relay 54, discharge resistance 55 and the second discharging terminals 56;In accumulator one end, second discharging terminals 56 are arranged in the accumulator other end for the setting of first discharging terminals 51;
Each accumulator is respectively connected with a voltage collection circuit 6, and the voltage collection circuit 6 includes:Be sequentially connected in series One acquisition terminal 61, third relay 62, voltage acquisition module collection terminal 63, the 4th relay 64 and second acquire terminal 65; The first acquisition terminal setting is arranged in accumulator one end, the second acquisition terminal in the accumulator other end;
The control module 2 include several acquisition control output ends, acquisition control output end respectively with the first relay 52 Control terminal, the control terminal of the second relay 54, the control terminal of third relay 62 be connected with the control terminal of the 4th relay 64;
The processing module 1 is connected with voltage acquisition module 3 and current acquisition module 4 respectively.
Can by control module 2 control the control terminal of the first relay 52, the control terminal of the second relay 54, third after The break-make of the control terminal of electric appliance 62 and the 4th relay 64, so control the voltage collection circuit 6 that is connect with tested accumulator and 5 break-make of discharge circuit;So that voltage acquisition module 3 and current acquisition module 4 can acquire tested accumulator voltage and Discharge current.As for when collection voltages, when discharge and acquire discharge current, if according to the voltage and discharge current of acquisition It is the prior art that accumulator resistance, which is calculated, and the utility model no longer describes.The setting of current acquisition module collection terminal 53 exists In each discharge circuit, in practical measurement process, the first relay 52 and the second relay in each discharge circuit can be controlled 54 cut-off, and then control on the discharge circuit where which current acquisition module collection terminal 53 be specifically tested accumulator at.Together Sample, voltage acquisition module collection terminal 63 is arranged in each voltage collection circuit, in practical measurement process, can control voltage Third relay 62 and the 4th relay 64 are cut-off in Acquisition Circuit, and then are controlled voltage acquisition module collection terminal 63 and specifically existed On voltage collection circuit where which tested accumulator.
The acquisition control output end of B, C and D of control module modules in order to control in Fig. 2;Acquisition control output end B and electric power storage 52 control terminal of the first relay in discharge circuit where the S1 of pond is connected with 54 control terminal of the second relay;Acquisition control output end B is connected with 62 control terminal of third relay and 64 control terminal of the 4th relay in voltage collection circuit where accumulator S1;Equally , acquisition control output end C and 52 control terminal of the first relay and the second relay 54 in discharge circuit where accumulator S2 Control terminal is connected;62 control terminal of third relay and the in voltage collection circuit where acquisition control output end C and accumulator S1 Four relays, 64 control terminal is connected;Likewise, the connection type of other acquisition control output ends is similar.
In Fig. 2, the output terminals A of control module is connected with the control terminal of current acquisition module, the output end E of control module with The control terminal of voltage acquisition module is connected.
As the preferred embodiment of the utility model, the relay is solid-state relay.
As the preferred embodiment of the utility model, as shown in Fig. 2, first discharging terminals, 51 and first relay Self-recovery fuse 57 is in series between 52.Preventing plant failure from misplacing, electric or discharge current is excessive causes to damage to battery pack It is bad.
As the preferred embodiment of the utility model, 52 both ends of the first relay are parallel with varistor, and/ Or 54 both ends of the second relay are parallel with varistor.Prevent plant failure from misplacing electric or discharge current excessive to electricity Pond group damages.
As the preferred embodiment of the utility model, the second acquisition terminal 65 on previous accumulator is simultaneously as latter The first acquisition terminal 61 on accumulator.
As the optional embodiment of the utility model, the processing module 1 can be directly to use in background technology CPU, voltage acquisition module 3 and current acquisition module 4 can also directly use voltage sample module and electric current in background technology Acquisition module 4;The control circuit of microcontroller or routine may be used in the control module 2, by exporting low and high level control the One relay 52, the second relay 54, third relay 62, the 4th relay 64, voltage acquisition module 3 and current acquisition module 4, such as high level one controller of series connection, the multiple controls switches parallel with one another of the interior setting of controller.
As the preferred embodiment of the utility model, as shown in Figure 1, the processing module 1 is connected with communication module 7. As the preferred embodiment of the utility model, the processing module 1 is also associated with display module.
The foregoing is merely specific embodiment of the utility model, but the technical characteristics of the utility model is not limited to This, any those skilled in the art in the field of the utility model, made by changes or modifications all cover it is new in this practicality Among the scope of the claims of type.

Claims (7)

1. a kind of electric system accumulator cell essential resistance on-line measurement device, special for measuring each accumulator in accumulator group Sign is:Including processing module, control module, voltage acquisition module and current acquisition module;
Each accumulator is respectively connected with a discharge circuit, and the discharge circuit includes:The first discharging terminals for being sequentially connected in series, first Relay, current acquisition module collection terminal, the second relay, discharge resistance and the second discharging terminals;First discharging terminals Setting is arranged in accumulator one end, second discharging terminals in the accumulator other end;
Each accumulator is respectively connected with a voltage collection circuit, and the voltage collection circuit includes:The first acquisition being sequentially connected in series Terminal, third relay, voltage acquisition module collection terminal, the 4th relay and the second acquisition terminal;The first acquisition terminal Setting is arranged in accumulator one end, the second acquisition terminal in the accumulator other end;
The control module includes several acquisition control output ends, the control with the first relay respectively of acquisition control output end End, the control terminal of the second relay, the control terminal of third relay are connected with the control terminal of the 4th relay;
The processing module is connected with voltage acquisition module and current acquisition module respectively.
2. a kind of electric system accumulator cell essential resistance on-line measurement device as described in claim 1, it is characterised in that:The relay Device is solid-state relay.
3. a kind of electric system accumulator cell essential resistance on-line measurement device as described in claim 1, it is characterised in that:Described first Relay both ends are parallel with varistor.
4. a kind of electric system accumulator cell essential resistance on-line measurement device as described in claim 1 or 3, it is characterised in that:It is described Second relay both ends are parallel with varistor.
5. a kind of electric system accumulator cell essential resistance on-line measurement device as described in claim 1, it is characterised in that:Described first It is in series with self-recovery fuse between discharging terminals and the first relay.
6. a kind of electric system accumulator cell essential resistance on-line measurement device as described in claim 1, it is characterised in that:The processing Module is connected with communication module.
7. a kind of electric system accumulator cell essential resistance on-line measurement device as described in claim 1, it is characterised in that:The processing Module is connected with display device.
CN201721638605.9U 2017-11-30 2017-11-30 A kind of electric system accumulator cell essential resistance on-line measurement device Active CN207703999U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721638605.9U CN207703999U (en) 2017-11-30 2017-11-30 A kind of electric system accumulator cell essential resistance on-line measurement device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721638605.9U CN207703999U (en) 2017-11-30 2017-11-30 A kind of electric system accumulator cell essential resistance on-line measurement device

Publications (1)

Publication Number Publication Date
CN207703999U true CN207703999U (en) 2018-08-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721638605.9U Active CN207703999U (en) 2017-11-30 2017-11-30 A kind of electric system accumulator cell essential resistance on-line measurement device

Country Status (1)

Country Link
CN (1) CN207703999U (en)

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