CN1329255A - Chargeable cell test loop contact resistance monitoring method - Google Patents
Chargeable cell test loop contact resistance monitoring method Download PDFInfo
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- CN1329255A CN1329255A CN 00117191 CN00117191A CN1329255A CN 1329255 A CN1329255 A CN 1329255A CN 00117191 CN00117191 CN 00117191 CN 00117191 A CN00117191 A CN 00117191A CN 1329255 A CN1329255 A CN 1329255A
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Abstract
The invented monitoring method is characterized by that it adopts battery monitoring amplifier, its negative input end is connected with current sampling resistor R1 and lower clamp of battery by means of resistor R2, the positive input end of amplifier is connected with threshold current set signal Vx by means of resistor R3, the output end of amplifier is connected with power supply and amplifier end by means of indication light-emitting diode D and resistor R4, and the amplifier end is connected with another end of power supply, and one end of resistor R1 is connected to constant current or constant voltage power supply (HL), and another end is connected to the lower clamp of battery and negative input end of amplifier.
Description
The present invention relates to detection method, particularly a kind of monitoring method that is used for chargeable cell test loop contact resistance belongs to the Automatic Measurement Technique field.
Existing chargeable cell test equipment does not have method to monitor the test loop contact resistance, and this has seriously influenced changing into of rechargeable battery or has detected effect.
The object of the invention provides a kind of simple, practicality can indicate the contact resistance situation between battery and the anchor clamps legibly, the contact resistance monitoring method of so that operating personnel handle, guarantee to change into, the capacity check operation accurately realizing.
For achieving the above object, the present invention (with reference to Fig. 2) adopts following circuit block to form monitoring device, comprising current monitoring amplifier (A), current sampling resistor R
1, indication light emitting diode (D), threshold current settings signal (V
X), rechargeable battery (E) etc.It is characterized in that: the negative input end (2) of battery detection amplifier (A) passes through resistance R
2With current sampling resistor R
1And the connection of battery (E) lower clamp, the positive input terminal of amplifier (3) passes through resistance R
3With threshold current settings signal V
XConnect, the output terminal of amplifier (6) is by indication light emitting diode D, resistance R
4Be connected with power supply and amplifier end (7).Amplifier end (4) is connected with the power supply other end, current sampling resistor R
1One end is to be connected to constant-current supply or constant voltage source (HL), and the other end is connected to battery (E) lower clamp and amplifier negative input end.
Advantage of the present invention is: 1. can monitor the loose contact degree that battery charges and discharge the loop, effect is directly perceived, convenient; 2. be easy to expanded application, practical especially to rechargeable battery detection, the formation device that has numerous loops; 3. the monitoring current threshold value can be regulated and be that numerous loops are public, satisfies the monitoring needs of different model battery to different threshold electric currents; 4. cheap, be easy to produce in batches.
Fig. 1-principle of the invention block scheme, 1 expression current sampling resistor R among the figure
1, 2 expression current monitoring amplifier A, 3 expression rechargeable battery E, 4 expression indication light emitting diode D.
Fig. 2-example elementary diagram
Fig. 3-sample resistance R
1With parallel resistance W connection layout
The invention will be further described below in conjunction with drawings and Examples: the present invention selects components and parts to form with reference to Fig. 1-3.Current sampling resistor R
1Enough power must be arranged, for the electric current that battery charges and discharge, R
1Value generally get 1 Ω/5W, degree of accuracy is more than ± 0.5%, simultaneously R
1The current value that Ying Yuqi flow through becomes simple proportionate relationship, as every ampere of 1V/, so can use one and R
1Parallel resistor is to adjust the proportionate relationship of electric current and output voltage.R
4Value depend mainly on the magnitude of voltage of power supply, allow the indication light emitting diode D be foundation with value by the 8-12mA electric current.Current monitoring amplifier A can select the universal operational amplifier of any kind for use, and the present invention selects 741 for use, and its power supply is directly provided by power supply DC.
Claims (4)
1, a kind of monitoring method that is used for chargeable cell test loop contact resistance, this method adopts circuit, components and parts, comprises battery sample resistance R
1, current monitoring amplifier A, indication diode D, threshold current settings signal V
XDeng, it is characterized in that: the negative input end (2) of current monitoring amplifier (A) passes through resistance R
2With current sampling resistor R
1And the connection of battery (E) lower clamp, the positive input terminal of amplifier (3) passes through resistance R
3With threshold current settings signal V
XConnect, the output terminal of amplifier (6) is by indication diode D, resistance R
4Be connected with power supply and amplifier end (7), amplifier end (4) is connected with the power supply other end, current sampling resistor R
1One end is to be connected to constant-current supply or constant voltage source (HL), and the other end is connected to battery (E) lower clamp and amplifier negative input end.
2, monitoring method according to claim 1 is characterized in that current sampling resistor is connected in the battery testing loop.
3, monitoring method according to claim 1 is characterized in that battery sample resistance R
1Can be in parallel with minute connecting resistance.
4, monitoring method according to claim 1 is characterized in that described indication diode D is a light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00117191 CN1124493C (en) | 2000-06-20 | 2000-06-20 | Chargeable cell test loop contact resistance monitoring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00117191 CN1124493C (en) | 2000-06-20 | 2000-06-20 | Chargeable cell test loop contact resistance monitoring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1329255A true CN1329255A (en) | 2002-01-02 |
| CN1124493C CN1124493C (en) | 2003-10-15 |
Family
ID=4586579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00117191 Expired - Fee Related CN1124493C (en) | 2000-06-20 | 2000-06-20 | Chargeable cell test loop contact resistance monitoring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1124493C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102645571A (en) * | 2012-04-19 | 2012-08-22 | 中兴通讯股份有限公司 | Detection circuit and electronic terminal |
| CN101713794B (en) * | 2009-10-23 | 2012-09-05 | 广州蓝奇电子实业有限公司 | Method for detecting poor contact of battery voltage testing terminals |
| CN101696991B (en) * | 2009-10-14 | 2013-08-28 | 苏州阿特斯阳光电力科技有限公司 | Method and device for detecting contact resistance of probe |
| CN105550092A (en) * | 2015-12-07 | 2016-05-04 | 联想(北京)有限公司 | Information processing method and electronic device |
| CN104166050B (en) * | 2013-05-15 | 2017-04-12 | 乐金信世股份有限公司 | Monitoring apparatus and method of battery contact point |
-
2000
- 2000-06-20 CN CN 00117191 patent/CN1124493C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101696991B (en) * | 2009-10-14 | 2013-08-28 | 苏州阿特斯阳光电力科技有限公司 | Method and device for detecting contact resistance of probe |
| CN101713794B (en) * | 2009-10-23 | 2012-09-05 | 广州蓝奇电子实业有限公司 | Method for detecting poor contact of battery voltage testing terminals |
| CN102645571A (en) * | 2012-04-19 | 2012-08-22 | 中兴通讯股份有限公司 | Detection circuit and electronic terminal |
| CN104166050B (en) * | 2013-05-15 | 2017-04-12 | 乐金信世股份有限公司 | Monitoring apparatus and method of battery contact point |
| CN105550092A (en) * | 2015-12-07 | 2016-05-04 | 联想(北京)有限公司 | Information processing method and electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1124493C (en) | 2003-10-15 |
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