CN2526858Y - Dynamic source cell internal resistance measurer - Google Patents
Dynamic source cell internal resistance measurer Download PDFInfo
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- CN2526858Y CN2526858Y CN 01271600 CN01271600U CN2526858Y CN 2526858 Y CN2526858 Y CN 2526858Y CN 01271600 CN01271600 CN 01271600 CN 01271600 U CN01271600 U CN 01271600U CN 2526858 Y CN2526858 Y CN 2526858Y
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- internal resistance
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- precision constant
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Abstract
The utility model discloses a measuring instrument of dynamic source battery internal resistance, comprising a contact terminal which touches a battery to be measured. The utility model is characterized in that a high-precision constant current source circuit, value of internal resistance of which is given, is used for constituting a closed circuit in series with the battery to be measured; a positive electrode of the contact terminal is connected with an input end of the high-precision constant current source circuit. The high-precision constant current source circuit comprises a high-frequency Cuk stable current circuit and a closed loop circuit with a high constant current precision Uf, If; and the high-precision constant current source circuit can also consists of a low- frequency linear circuit, for instance, constituting by utilizing a standard adjustable three-end steady voltage IC circuit uA317.
Description
Technical field
The utility model relates to a kind of accumulator capacity determinator, particularly a kind of dynamic source battery internal resistance measurement instrument.
Background technology
In numerous backup power systems, the judgement of accumulator capacity is the main contents of maintenance work, and has directly determined the reliability of system works.Traditional decision method, as the density of electrolyte method, generally be only applicable to open-type automobile storage battery and fixed lead-acid accumulator, generally be in the battery of new attitude, its density and capacity have good corresponding relation, and outmoded battery, then deviation is increasing, commercially available hydrometer delimited three zones for this reason, show battery status roughly, be difficult to make quantitative test.The present no-load voltage method that adopts, its reliability is the same with densimetry, only for reference. U.S., moral, states such as method adopt the alternating current inducing defecation by enema and suppository to carry out online conductivity test to valve controlling sealed accumulator, when this method requires accumulator is installed, must set up corresponding electric conductivity value and measure the curve archives, domestic some studies show that, this method only can judge whether battery lost efficacy, detect and can not make battery capacity, Kai Fa impulsive discharge method in recent years, test error fluctuation range to similar battery is about 5%, the constant-current discharge method of present national sector standard regulation, use comparatively general, yet, accumulator is in discharge process, need the series connection joint number numerous, sometimes even nearly 180 save, chemical constitution and electrode plate structure are difficult to satisfy some common standards, and the impulse detection of short time can be subjected to the restriction of all factors, as service time, environment temperature, its maintenance situation etc., moreover, because discharge resistance can not very fast adjustment, and keeps high precision, so be static to the evaluation of internal resistance, and be accompanied by the discharge of electric battery, its internal resistance generally can increase, so just can not in time find the descend subtle change of the source internal resistance that causes of certain battery capacity, also just can't instead call out certainly on the extrinsic parameter such as terminal voltage, often cause erroneous judgement, fail to judge or prolong and declare.
Description of content
The purpose of this utility model provides a kind of dynamic source battery internal resistance measurement instrument.
The purpose of this utility model is achieved in that
The utility model comprises the contact terminal that contacts with mesuring battary, and the high-precision constant flow source circuit that an internal resistance value is given is used for constituting the closed-loop path of connecting with mesuring battary, and the positive pole of contact terminal and the input end of described high-precision constant flow source circuit link.Characteristics such as described high-precision constant flow source circuit possesses high precision of steady current, fast tracking response speed, the constant current adjustable extent is wide, electric current is big.
Described high-precision constant flow source circuit can be made up of high frequency Cuk current stabilization circuit, feedback voltage sampling Uf, feedback current sampled I f closed loop circuit with high precision of steady current.
Described high-precision constant flow source circuit also can be made up of the low frequency linear circuit, as utilizes adjustable three-terminal voltage-stabilizing IC circuit { the uA317} formation of standard.
Because the utility model adopts technique scheme, thereby, not only satisfied the requirement of the battery capacity constant-current discharge method of national unique approval, avoided its discharge time long again, the drawback that workload is big, port from battery, high precise current source has constituted the part of the internal resistance of cell, and be adjusted to the internal resistance value that meets capacity requirement automatically, because source resistance does not change with any extraneous factor, so, when arbitrary batteries capacity decline causes connecting source internal resistance increase, having the high-precision constant flow source circuit of following the tracks of at a high speed current stabilization circuit and high precision of steady current can this small variation of very fast discovery, instrument can increase source resistance and amplify this variation from motion tracking, causes battery series connection source internal resistance to be multiplied, and sees that from the outside tested battery has very fast unit interval inner terminal voltage decline phenomenon, as foundation, can detect backward or dead battery by the voltage rate of descent.Obviously, the utlity model has following advantage:
{ 1} automaticity height, the discharge scene need not personnel's continued operation, raises labour efficiency.
{ battery follows the inspection joint number in the 2} discharge process no longer needs single-unit to detect { need reach more than 200 line as 108 batteries }, changes because instrument can amplify the internal resistance of single-unit, can significantly reduce so detect joint number.Only need to detect 19 joints, wiring reduces to 20.
{ 3} adapts to variety classes, the accumulator of different electric pressures or battery pack.
{ 4} is easy to use flexibly, and the battery more serious to general inefficacy often just can find in a few minutes, and conventional method is difficult to accomplish this point.
Description of drawings
Fig. 1 is the utility model circuit structure schematic diagram.
Fig. 2 is a kind of high-precision constant flow source circuit structure principle chart that the utility model adopted.
Fig. 3 is the another kind of high-precision constant flow source circuit structural principle that the utility model adopted
Figure.
Embodiment
Embodiment one
As Fig. 1～shown in Figure 2:
The utility model comprises the contact terminal that contacts with mesuring battary, it is characterized in that: the high-precision constant flow source circuit that an internal resistance value is given is used for constituting the closed-loop path of connecting with mesuring battary, and the positive pole of contact terminal and the input end of described high-precision constant flow source circuit link.Characteristics such as described high-precision constant flow source circuit possesses high precision of steady current, fast tracking response speed, the constant current adjustable extent is wide, electric current is big.
Described high-precision constant flow source circuit can be by high frequency Cuk current stabilization circuit, and feedback voltage sampling Uf, feedback current sampled I f closed loop circuit with high precision of steady current are formed, and concrete annexation is as follows: the positive pole of contact terminal is through IGBT power tube T
1, resonant inductance L
2To afterflow diode D
1Negative pole and resonant capacitance C
1Positive pole, then, by discharge resistance R
LGet back to battery terminal negative, in sustained diode
1Negative pole and resonant capacitance C
1Between, serial connection afterflow inductance L
1, discharge current signal I
FIntroduce pulse width control circuit input end, discharge resistance R from battery positive voltage
LTerminal voltage signal U
FFrom discharge resistance R
LAnodal pulse width control circuit input end, the resonant inductance L of introducing
2Terminal voltage signal U
LFrom resonant inductance L
2Introduce the pulse width control circuit input end, the external IGBT power tube of the control port of pulse width control circuit (OUT) T1.The PLC control system is used Siemens PLC C hardware to realize programmed control, data storage, is crossed functions such as putting protection.
Embodiment two
Referring to Fig. 1 and Fig. 3
Other is with embodiment one, but described high-precision constant flow source circuit also can be made up of the low frequency linear circuit, as { uA317} constitutes to utilize the adjustable three-terminal voltage-stabilizing IC circuit of standard.Fig. 3 shows: { IN}'s input end of uA317 links to each other with the positive pole of contact terminal, { OUT}'s output terminal links to each other with a resistance R s, the adjustable device Q that the other end of Rs and an internal resistance value are given links to each other, { end of GND} and pull-up resistor R1 links to each other adjustable device Q, and the other end of R1 links to each other with the negative pole of contact terminal with the earth terminal of uA317 respectively.
Claims (3)
1, dynamic source battery internal resistance measurement instrument, comprise the contact terminal that contacts with mesuring battary, it is characterized in that: the high-precision constant flow source circuit that an internal resistance value is given is used for constituting the closed-loop path of connecting with mesuring battary, and the positive pole of contact terminal and the input end of described high-precision constant flow source circuit link.
2, the described dynamic source battery internal resistance measurement instrument of root a tree name claim 1 is characterized in that: described high-precision constant flow source circuit is made up of high frequency Cuk current stabilization circuit, feedback voltage sampling Uf, feedback current sampled I f closed loop circuit with high precision of steady current.
3, the described dynamic source battery internal resistance measurement instrument of root a tree name claim 1, it is characterized in that: described high-precision constant flow source circuit is made up of the low frequency linear circuit, promptly utilizes the adjustable three-terminal voltage-stabilizing IC circuit uA317 of standard to constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01271600 CN2526858Y (en) | 2001-12-31 | 2001-12-31 | Dynamic source cell internal resistance measurer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01271600 CN2526858Y (en) | 2001-12-31 | 2001-12-31 | Dynamic source cell internal resistance measurer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2526858Y true CN2526858Y (en) | 2002-12-18 |
Family
ID=33677011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01271600 Expired - Fee Related CN2526858Y (en) | 2001-12-31 | 2001-12-31 | Dynamic source cell internal resistance measurer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2526858Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102495374A (en) * | 2011-12-02 | 2012-06-13 | 深圳市晶福源电子技术有限公司 | Alternate-current current source for detecting internal resistant of cell in alternate current injection method and control method thereof |
| CN105277792A (en) * | 2015-12-04 | 2016-01-27 | 深圳国安电气科技开发有限公司 | On-line measurement method for internal resistance of lithium battery |
| CN105548725A (en) * | 2015-12-16 | 2016-05-04 | 黑龙江省计量检定测试院 | Online detector for super capacitor and internal resistance detection method based on detector |
| CN106468738A (en) * | 2015-08-20 | 2017-03-01 | 福建二菱电子有限公司 | A kind of measurement apparatus of accumulator internal resistance and method |
| CN109212430A (en) * | 2018-07-27 | 2019-01-15 | 深圳市美思创电子有限公司 | A kind of battery impedance measurement method and system based on the small signal of analog AC |
| CN110018421A (en) * | 2019-05-22 | 2019-07-16 | 四川网达科技有限公司 | Battery state monitoring method and system |
| CN111679216A (en) * | 2020-06-24 | 2020-09-18 | 重庆长安新能源汽车科技有限公司 | Device and method for detecting high-voltage connection reliability of power battery |
-
2001
- 2001-12-31 CN CN 01271600 patent/CN2526858Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102495374A (en) * | 2011-12-02 | 2012-06-13 | 深圳市晶福源电子技术有限公司 | Alternate-current current source for detecting internal resistant of cell in alternate current injection method and control method thereof |
| CN102495374B (en) * | 2011-12-02 | 2013-05-29 | 深圳市晶福源电子技术有限公司 | Alternate-current source for detecting internal resistance of cell in alternate current injection method and control method thereof |
| WO2013078894A1 (en) * | 2011-12-02 | 2013-06-06 | 深圳市晶福源电子技术有限公司 | Alternating current source for detecting battery internal resistance in alternate current injection method and control method thereof |
| CN106468738A (en) * | 2015-08-20 | 2017-03-01 | 福建二菱电子有限公司 | A kind of measurement apparatus of accumulator internal resistance and method |
| CN106468738B (en) * | 2015-08-20 | 2023-06-13 | 漳州海银智慧信息科技有限公司 | Device and method for measuring internal resistance of storage battery |
| CN105277792A (en) * | 2015-12-04 | 2016-01-27 | 深圳国安电气科技开发有限公司 | On-line measurement method for internal resistance of lithium battery |
| CN105548725A (en) * | 2015-12-16 | 2016-05-04 | 黑龙江省计量检定测试院 | Online detector for super capacitor and internal resistance detection method based on detector |
| CN109212430A (en) * | 2018-07-27 | 2019-01-15 | 深圳市美思创电子有限公司 | A kind of battery impedance measurement method and system based on the small signal of analog AC |
| CN110018421A (en) * | 2019-05-22 | 2019-07-16 | 四川网达科技有限公司 | Battery state monitoring method and system |
| CN111679216A (en) * | 2020-06-24 | 2020-09-18 | 重庆长安新能源汽车科技有限公司 | Device and method for detecting high-voltage connection reliability of power battery |
| CN111679216B (en) * | 2020-06-24 | 2022-08-02 | 重庆长安新能源汽车科技有限公司 | Device and method for detecting high-voltage connection reliability of power battery |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhang Yang Document name: Notification of Termination of Patent Right |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |