CN207636728U - A kind of dc-battery internal resistance Acquisition Instrument of simplified four-wire method - Google Patents
A kind of dc-battery internal resistance Acquisition Instrument of simplified four-wire method Download PDFInfo
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- CN207636728U CN207636728U CN201721233406.XU CN201721233406U CN207636728U CN 207636728 U CN207636728 U CN 207636728U CN 201721233406 U CN201721233406 U CN 201721233406U CN 207636728 U CN207636728 U CN 207636728U
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- internal resistance
- acquisition instrument
- simplified
- connecting line
- battery internal
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Abstract
The utility model provides a kind of dc-battery internal resistance Acquisition Instrument of simplified four-wire method, including internal resistance of cell Acquisition Instrument ontology and the detection connecting line for connecting accumulator；The connecting terminal for detecting connecting line end position is U-shaped；And the connecting portion of connecting terminal and detection connecting line is for ease of the hollow cylinder pin of receiving harness,Detect concealed NTC (Negative Temperature Coefficient) temperature probe being embedded with for detecting battery plus-negative plate column temperature in the harness of connecting line,NTC temperature probes are positioned in the pin of connecting terminal,It is U-shaped by the way that the connecting terminal for detecting connecting line end position to be designed as,And the connecting portion shape of connecting terminal and detection connecting line is for ease of the hollow cylinder pin of receiving harness,Actual process of manufacture is more convenient,It is efficient,And dismounting is easy,The reliability of product is high,It is embedded in NTC temperature probes are concealed in harness,It improves traditional method and measures inaccurate situation,Have the advantages that accurately reflect accumulator anode and cathode column temperature.
Description
[technical field]
The utility model is related to internal resistance of cell detection technique field more particularly to a kind of installation and removal conveniently, and can
The more accurately dc-battery internal resistance Acquisition Instrument of the simplification four-wire method of reflection battery plus-negative plate column true temperature.
[background technology]
The internal resistance of accumulator and two important parameters that pole temperature is battery, the internal resistance of the capacity and accumulator of accumulator
There are great relationship, internal resistance parameter that can be used for weighing quality, the operation conditions of battery.The internal resistance of general battery is smaller, amount
Grade is several milliohms to tens milliohms.Temperature by detecting accumulator can judge whether there is heat in the current charge and discharge process of battery
Risk out of control, reporting in time for thermal runaway are significant to the maintenance and operation site safety of battery with processing.
When direct current method measures the internal resistance of cell, the impedance for considering circuit is needed, therefore direct current method internal resistance of cell Acquisition Instrument is often adopted
With four-wire method, by two discharge lines to acquire battery discharge current, two sampling lines are to acquire the voltage of battery discharge moment
Difference.4 conducting wires are connected on 4 terminals by traditional OT terminal due to needing, and need to put into more when being engineered large-scale application
More cost of installation and maintenance, and when client has the demand for replacing battery measurement, needing will be on accumulator anode and cathode column
Nut is entirely removed, even more cumbersome in large-scale replace.
Based on the above issues, how to improve the structure of OT terminal, it is difficult to simplify replacement for the cost for reducing installation and safeguarding
Degree, is the problem of those skilled in the art account for, has also carried out a large amount of research and development and experiment, achieve preferable achievement.
[utility model content]
To overcome the problems of prior art, a kind of installation and removal of the utility model offer are convenient, and can be more
Add the dc-battery internal resistance Acquisition Instrument of the accurately simplification four-wire method of reflection battery plus-negative plate column true temperature.
The scheme that the utility model solves technical problem is to provide a kind of dc-battery internal resistance Acquisition Instrument of simplified four-wire method,
Several detection connecting lines including internal resistance of cell Acquisition Instrument ontology and for connecting accumulator；The detection connects line end
The connecting terminal at position is U-shaped；And the connecting portion of connecting terminal and detection connecting line is for ease of the hollow cylinder of receiving harness
Body pin；
The concealed NTC thermometrics being embedded with for detecting battery plus-negative plate column temperature are visited in the harness of the detection connecting line
Head, the NTC temperature probes are positioned in the pin of connecting terminal.
Preferably, the connecting terminal is separately connected that there are two for accommodating the hollow cylinder pin of harness.
Preferably, the quantity of the detection connecting line is two.
Preferably, the hollow cylinder pin is symmetrically disposed on the both sides of U-shaped connecting terminal.
Preferably, the NTC temperature probes include the extension of thermistor shell and the connection thermistor shell
Lead.
Preferably, the thermistor is the ceramic resistor of sensing temperature situation.
Preferably, the internal resistance of cell Acquisition Instrument ontology includes the exchange for injecting constant current AC signal to mesuring battary
Constant-current source and voltage check device for being detected to mesuring battary both end voltage.
Preferably, the AC constant-current source includes sequentially connected AC signal generating unit, control circuit unit, power
Amplifier circuit unit and current sampling unit；The control circuit unit is according to the sampled result of current sampling unit to exchange
The AC signal of signal generating unit output is adjusted, and generates the drive signal of power amplification circuit unit.
Compared with prior art, a kind of dc-battery internal resistance Acquisition Instrument of simplified four-wire method of the utility model will be by that will detect
The connecting terminal at connecting line end position be designed as it is U-shaped, and connecting terminal with detection connecting line connecting portion shape for ease of
The hollow cylinder pin of harness is accommodated, actual process of manufacture is more convenient, efficient, and dismantles simplicity, product
Reliability is high, is embedded in NTC temperature probes are concealed in harness, improves traditional method and measure inaccurate situation, have
The advantages of accurately reflecting accumulator anode and cathode column temperature.
[description of the drawings]
Fig. 1 be a kind of simplified four-wire method of the utility model dc-battery internal resistance Acquisition Instrument in detect connecting line stereo structure
State structural schematic diagram.
[specific implementation mode]
To make the purpose of this utility model, technical solution and advantage be more clearly understood, with reference to the accompanying drawings and embodiments,
The present invention will be further described in detail.It should be appreciated that specific embodiment described herein is used only for explaining this
Utility model is not used to limit this utility model.
Referring to Fig. 1, a kind of dc-battery internal resistance Acquisition Instrument of simplified four-wire method of the utility model includes that the internal resistance of cell is adopted
Collect instrument ontology and several detection connecting lines 1 for connecting accumulator；The terminals at 1 end position of the detection connecting line
Son 15 is U-shaped；And the connecting portion of connecting terminal 15 and detection connecting line 1 is for ease of the hollow cylinder pin of receiving harness
151；
The concealed NTC being embedded with for detecting battery plus-negative plate column temperature is surveyed in the harness 11 of the detection connecting line 1
Temperature probe 13, the NTC temperature probes 13 are positioned in the pin 151 of connecting terminal 15.
It is U-shaped by the way that the connecting terminal 15 for detecting 1 end position of connecting line to be designed as, and connecting terminal 15 is connected with detection
The connecting portion shape of line 1 is for ease of accommodating the hollow cylinder pin 151 of harness, and actual process of manufacture is more just
Victory, efficient, and dismantle easy, the reliability of product is high, is embedded in NTC temperature probes 13 are concealed in harness 11, improves
Traditional method measures inaccurate situation, has the advantages that accurately reflect accumulator anode and cathode column temperature.
Preferably, the connecting terminal 15 is separately connected that there are two for accommodating the hollow cylinder pin 151 of harness.
Preferably, the quantity of the detection connecting line 1 is two.Improve four traditional line access methods.
Preferably, the hollow cylinder pin 151 is symmetrically disposed on the both sides of U-shaped connecting terminal 15.
Preferably, the NTC temperature probes 13 include thermistor shell 131 and the connection thermistor shell
131 extension lead 133.
Preferably, the thermistor is the ceramic resistor of sensing temperature situation.
Preferably, the internal resistance of cell Acquisition Instrument ontology includes the exchange for injecting constant current AC signal to mesuring battary
Constant-current source and voltage check device for being detected to mesuring battary both end voltage.
Preferably, the AC constant-current source includes sequentially connected AC signal generating unit, control circuit unit, power
Amplifier circuit unit and current sampling unit；The control circuit unit is according to the sampled result of current sampling unit to exchange
The AC signal of signal generating unit output is adjusted, and generates the drive signal of power amplification circuit unit.
By the way that connecting terminal 15 is designed as U-shaped structure, the operating time during installation and maintenance, wiring can be saved
Also more simplify, is practical；Conducting wire and terminal joint use hollow design simultaneously, with it is traditional need Crimping Pliers tool compared with,
Installation is more quick practical.
In addition, NTC temperature probes 13 are embedded to inside connecting terminal 15, such method makes the temperature of temperature probe measurement gained
Degree with pole temperature holding it is highly consistent, compensate for it is traditional temperature probe is exposed on battery jar or in air not
It can really reflect the deficiency of pole temperature, and be fitted using algorithm, to improve sampling precision, have with traditional four-wire method identical
Accuracy of detection.
In direct current method measures internal resistance, using the four conducting wire cut-in method of tradition of OT terminal, needed in accumulator positive and negative electrode
Using 4 OT terminal, not only wiring bothers in this way, but also harness is intensive, especially in occasions such as UPS computer rooms, substations, needs
Thousands of section accumulators, such scheme when project installation is safeguarded more have inconvenience.By terminal design at improved U-shaped, installation in this way
When only need the nut of battery plus-negative plate column unscrewing very small part installation can be completed, while it is simple also to remain R types terminal
The advantages of changing wiring, it is such since the dc-battery internal resistance Acquisition Instrument of design is applied to the static fixed-sites such as computer room, substation
The fastness of connecting terminal can still be guaranteed.
The part that terminal is connected with conducting wire is designed to hollow cylinder form simultaneously, when mounted, it is only necessary to put harness
Enter cylinder hollow position be squeezed into it is flat, compared to Crimping Pliers install it is more convenient.In order to make NTC temperature probes 13
Probe is embedded in harness by the true temperature that can more accurately reflect battery plus-negative plate column, with one with the U-shaped terminal of improvement
A conducting wire pin fits closely.
Relative to traditional process, a kind of dc-battery internal resistance Acquisition Instrument 1 of simplified four-wire method of the utility model has
Following remarkable advantage and effect：
1. improve connecting terminal 15 technological design, simplify installation, disassembly process complexity, reduce material quantity at
This improves the reliability of product while increasing simple and direct, practicability；
2. the layout designs of reasonable arrangement NTC temperature probes 13, protection well is popped one's head in slow down aging, and product is improved
Reliability；The advantages of accurately temperature of reflection accumulator anode and cathode column can also be retained simultaneously.
Compared with prior art, a kind of dc-battery internal resistance Acquisition Instrument 1 of simplified four-wire method of the utility model will be by that will examine
The connecting terminal 15 for surveying connecting line 1 end position is designed as U-shaped, and the connecting portion shape of connecting terminal 15 and detection connecting line 1
For shape for ease of accommodating the hollow cylinder pin 151 of harness, actual process of manufacture is more convenient, efficient, and dismantles
Simplicity, the reliability of product is high, is embedded in NTC temperature probes 13 are concealed in harness 11, improves traditional method and measure
Inaccurate situation has the advantages that accurately reflect accumulator anode and cathode column temperature.
Above-described the utility model embodiment, does not constitute the restriction to scope of protection of the utility model.It is any
Modifications, equivalent substitutions and improvements made within spirit of the present utility model and principle etc., should be included in the utility model
Claims within.
Claims (7)
1. a kind of dc-battery internal resistance Acquisition Instrument of simplified four-wire method, it is characterised in that：Including internal resistance of cell Acquisition Instrument ontology with
And several detection connecting lines for connecting accumulator；The connecting terminal at the detection connecting line end position is U-shaped；And it connects
Line terminals with detection connecting line connecting portion for ease of accommodate harness hollow cylinder pin；
The concealed NTC temperature probes being embedded with for detecting battery plus-negative plate column temperature in the harness of the detection connecting line,
The NTC temperature probes are positioned in the pin of connecting terminal.
2. a kind of dc-battery internal resistance Acquisition Instrument of simplified four-wire method as described in claim 1, it is characterised in that：The wiring
Terminal is separately connected that there are two for accommodating the hollow cylinder pin of harness.
3. a kind of dc-battery internal resistance Acquisition Instrument of simplified four-wire method as claimed in claim 2, it is characterised in that：The detection
The quantity of connecting line is two.
4. a kind of dc-battery internal resistance Acquisition Instrument of simplified four-wire method as claimed in claim 2, it is characterised in that：It is described hollow
Cylinder pin is symmetrically disposed on the both sides of U-shaped connecting terminal.
5. a kind of dc-battery internal resistance Acquisition Instrument of simplified four-wire method as described in claim 1, it is characterised in that：The NTC
Temperature probe includes the extension lead of thermistor shell and the connection thermistor shell.
6. a kind of dc-battery internal resistance Acquisition Instrument of simplified four-wire method as described in claim 1, it is characterised in that：The battery
Internal resistance Acquisition Instrument ontology includes for injecting the AC constant-current source of constant current AC signal to mesuring battary and for electricity to be measured
The voltage check device that pond both end voltage is detected.
7. a kind of dc-battery internal resistance Acquisition Instrument of simplified four-wire method as claimed in claim 6, it is characterised in that：The exchange
Constant-current source includes that sequentially connected AC signal generating unit, control circuit unit, power amplification circuit unit and electric current are adopted
Sample unit；The exchange that the control circuit unit exports AC signal generating unit according to the sampled result of current sampling unit
Signal is adjusted, and generates the drive signal of power amplification circuit unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721233406.XU CN207636728U (en) | 2017-09-25 | 2017-09-25 | A kind of dc-battery internal resistance Acquisition Instrument of simplified four-wire method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721233406.XU CN207636728U (en) | 2017-09-25 | 2017-09-25 | A kind of dc-battery internal resistance Acquisition Instrument of simplified four-wire method |
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| Publication Number | Publication Date |
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| CN207636728U true CN207636728U (en) | 2018-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721233406.XU Active CN207636728U (en) | 2017-09-25 | 2017-09-25 | A kind of dc-battery internal resistance Acquisition Instrument of simplified four-wire method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459594A (en) * | 2018-12-05 | 2019-03-12 | 珠海东帆科技有限公司 | It is a kind of for connecting the measurement terminal of battery |
-
2017
- 2017-09-25 CN CN201721233406.XU patent/CN207636728U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459594A (en) * | 2018-12-05 | 2019-03-12 | 珠海东帆科技有限公司 | It is a kind of for connecting the measurement terminal of battery |
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