CN203745616U - Maintenance-free lead-acid storage battery nondestructive testing instrument - Google Patents
Maintenance-free lead-acid storage battery nondestructive testing instrument Download PDFInfo
- Publication number
- CN203745616U CN203745616U CN201320892305.9U CN201320892305U CN203745616U CN 203745616 U CN203745616 U CN 203745616U CN 201320892305 U CN201320892305 U CN 201320892305U CN 203745616 U CN203745616 U CN 203745616U
- Authority
- CN
- China
- Prior art keywords
- circuit
- charging
- maintenance
- battery
- testing instrument
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The utility model discloses a maintenance-free lead-acid storage battery nondestructive testing instrument. The maintenance-free lead-acid storage battery nondestructive testing instrument comprises a controllable rectification circuit used for connecting a power source; the output end of the controllable rectification circuit is connected with a storage battery, so that a charging circuit can be formed; and a charging control switch is connected in series in the charging circuit; and the maintenance-free lead-acid storage battery nondestructive testing instrument further comprises a discharging circuit which is connected in series with a discharging control switch and a discharging resistor, a voltage isolation detection circuit which is used for detecting the voltage of the storage battery and a current sensor used for detecting current. The maintenance-free lead-acid storage battery nondestructive testing instrument of the utility model is provided with the charging circuit and the discharging circuit, and can adjust current and voltage in charging and discharging through the controllable rectification circuit, and therefore, whether the storage battery is in a good condition or in a bad condition can be judged according to the changes of the voltage and current. With the maintenance-free lead-acid storage battery nondestructive testing instrument adopted, whether lead-acid storage batteries are in good conditions or in bad conditions can be accurately judged, and detection accuracy can be improved, and wrong scrapping of a large number of storage batteries which is caused by inaccurate judgment, can be avoided, and thus, the maintenance-free lead-acid storage battery nondestructive testing instrument will enable remarkable economic benefits and social benefits.
Description
Technical field
The utility model relates to a kind of maintenance-free lead accumulator nondestructive testing instrument.
Background technology
The recoverable amount of current various vehicles is more and more, and the annual newly-increased various motor vehicles of China all surpass 1,000 ten thousand in recent years, and each is all equipped with 1 or 2 12V lead-acid accumulator above car, and wherein accounting for more than 90% is all maintenance-free lead accumulator.If add that its quantity of maintenance-free lead accumulator that electric motor car joins is quite huge.
And the detection of the early stage common lead-acid battery of open type can check by observation, electric discharge, three kinds of modes of survey proportion the quality of battery, its accuracy rate is quite high.Because a lot of situations can be observed situation that the situation of change of battery internal polar plate and electrolytic solution judges battery as whether vulcanized by liquid filling hole, shedding etc.Combined with Radiotherapy ammeter, to the of short duration electric discharge of battery, can check out failure welding, and single lattice short circuit, opens circuit.The power shortage situation of adding the variation judgement battery that can test electrolyte density, 90% battery failures can detect by said method substantially.
Along with the progress of technology, the requirement of environmental protection, the application of enclosure-type maintenance-free battery is more and more extensive, and the common open type lead-acid accumulator of liquid adding type is progressively eliminated.But the maximum feature of enclosure-type maintenance-free lead-acid battery is sealing, by observing, cannot see inside battery situation, also cannot survey the proportion of electrolytic solution, only by electric discharge, check accumulator quality again, but due to its limitation, a lot of situations are vulcanized as battery, micro-short circuit, the phenomenons such as shedding cannot accurately be judged, cause a large amount of battery erroneous judgements, original operable battery is reported by mistake useless, caused a large amount of manpowers, material resources, the waste of financial resources.Sometimes for accurately judgement accumulator is fine or not, have no alternative but accumulator meter face plastic housing to cut, to observe its inner case, not only caused electrolytic solution and the lead of battery damage but also inside battery also can cause great pollution to environment.
At present in this case, how to work out a kind of fast, convenient, the detecting instrument of judging accurately maintenance-free lead accumulator quality, seeming becomes more and more important and urgent.
Utility model content
The purpose of this utility model is to provide a kind of maintenance-free lead accumulator nondestructive testing instrument, to solve the problem of the existing detection method wasting of resources and contaminated environment.
In order to realize above object, the technical scheme that the utility model adopts is: a kind of maintenance-free lead accumulator nondestructive testing instrument, comprise the controlled rectification circuit for being connected with power supply, the output terminal of described controlled rectification circuit, for connecting and composing charging circuit with accumulator, is serially connected with charging control switch in charging circuit; This detector also comprises a discharge circuit that is serially connected with discharge control switch and discharge resistance and for detection of the voltage isolation detection circuit of battery tension with for detection of the current sensor of electric current.
In described discharge circuit, be also connected with one group for the switching tube of controlled discharge electric current.
Described controlled rectification circuit comprises in turn the rectification circuit connecting, the controlled half-bridge inversion circuit consisting of two switching tubes, transformer and control rectifying circuit not.
Described current sensor is Hall DC current sensor, comprises the discharge current sensor being serially connected in discharge circuit and is serially connected in the charging current sensor in charging circuit.
The detection line of described voltage isolation detection circuit and the detection line of current sensor divide and are arranged.
This detector also comprises the anti-holding circuit that connects for being connected with accumulator, described in connect anti-holding circuit and comprise an optocoupler, the former limit of optocoupler is connected with accumulator, the secondary two ends of optocoupler are connected with ground with single-chip microcomputer respectively.
Maintenance-free lead accumulator nondestructive testing instrument of the present utility model is provided with charging circuit and discharge circuit, to electric current and the voltage in charging and when electric discharge being regulated by controlled rectification circuit, meet test needs, when detecting, first by constant-current discharge, calculate the internal resistance of mesuring battary, and compare with standard internal resistance, according to the charged state of comparative result and battery, judge, if without the battery overcharging, if being greater than standard internal resistance, its internal resistance needs through overcharging, to test again judgement.This detection method can be in the situation that not dissecting battery, according to during electric current and voltage change to judge the quality of accumulator, accurately judgement maintenance-free lead accumulator is fine or not, improved the accuracy rate detecting, avoid causing a large amount of accumulators to give up because judging inaccurate wrong report by mistake, have its significant economic benefit and social benefit.
This detector provides a hardware platform for those skilled in the art, based on this hardware platform, those skilled in the art can select specific control device to realize desired charging modes, comprise original charging method and constant voltage charging method etc., make those skilled in the art have basis and the prerequisite of free selection control device; So the claimed technical scheme of the utility model does not relate to the improvement to method, its realization does not rely on software approach yet, belongs to the object of utility model protection.
Voltage detecting line and current detecting line are divided and be arranged, avoid the voltage tester precision at the line pressure drop affects battery two ends that cause because of the charging current on load line, improved greatly the precision of output voltage, prevent that charging set from damaging battery because voltage is inaccurate.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the utility model detector embodiment;
Fig. 2 has been the charge graph of battery;
Fig. 3 is the battery charge graph that has slight sulfuration;
Fig. 4 is the battery charge graph of inner serious sulfuration;
Fig. 5 is the charge graph of bad battery;
Fig. 6 is the bad battery charge graph of interior welds;
Fig. 7 is the schematic diagram of controlled rectification circuit;
Fig. 8 is the circuit theory diagrams of controller;
Fig. 9 is voltage isolation detection circuit schematic diagram;
Figure 10 is the first drive amplification circuit theory diagrams of half-bridge circuit;
Figure 11 is the second drive amplification circuit theory diagrams of half-bridge circuit;
Figure 12 is PWM controller principle figure;
Figure 13 A is the schematic diagram that connects anti-holding circuit exact connect ion;
Figure 13 B is the schematic diagram while connecing anti-holding circuit reversal connection;
Figure 14 is overload protecting circuit schematic diagram;
Figure 15 is auxiliary power circuit schematic diagram;
Figure 16 is four end testing circuit elementary diagrams;
Figure 17 is switch driving circuit schematic diagram.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the utility model is described further.
The utility model maintenance-free lead accumulator lossless detection method comprises the steps:
(1) first mesuring battary is carried out the constant-current discharge of setting-up time and setting electric current, calculate internal resistance r:r=(the Vo-V1)/I of mesuring battary, wherein, Vo is the front voltage of electric discharge; V1 is the rear voltage of electric discharge, and I is discharge current;
(2) according to the internal resistance of cell calculating and the charge condition of mesuring battary, battery is judged: when r < r0, r0 is standard internal resistance, judges that this battery is as good battery; If mesuring battary is rechargeable battery, when r > r0, judge that this battery is as bad battery; If mesuring battary is uncharged battery, when r > r0, need after overcharging, judge again;
The computation process of internal resistance of standard cells is as follows: a new battery is calculated to internal resistance according to the method for step (1), using 1.1 times of this new internal resistance of cell value as standard internal resistance.
(3) mesuring battary that need judge is again carried out to the modified constant-voltage charge of setting-up time and setting voltage after overcharging, charging current after arriving according to setting-up time judges: if the current threshold that after setting-up time, charging current is greater than setting can be judged to be battery, if the current threshold that after setting-up time, charging current is less than setting thinks that inside battery damages.
In the present embodiment, mesuring battary be take 12V lead-acid accumulator and is described as example, constant-voltage charge link is particularly important to the fine or not judgement of battery, through repetition test, and combined circuit thermal value, in determining step (1), the setting-up time of constant-current discharge is 5 seconds, and setting electric current is 25A; In step (3), the setting-up time of modified constant-voltage charge is 10min, and setting voltage is 15V, and current limit is 25A; The current threshold of setting is 20A, can meet the requirement of various battery detecting completely.If good battery power shortage passes through the charging of 10 minutes 15V constant voltage and current limiting 25A, the charging current in the time of 10 minutes is 25A.
Consider that the battery on market is mostly used batteries, some battery may cause battery to have sulfation because depositing, when plate vulcanizing, both inner pad surface can generate the nonconducting lead sulfate crystallization of one deck, charging initial stage electric current ability to accept is difference to some extent, during test, after a few minutes, the progressively decomposition internal resistance along with lead sulfate crystallization progressively reduces during the very large but charging of internal resistance, and charging current progressively increases.The internal resistance power shortage of general good battery can not surpass 20 milliohms yet, and charging current I=15/0.02=750A, if therefore electric current without restriction is very large.While not overcharging, because be the dynamic internal resistance that electrochemical reaction also can be subject to temperature, particle flow, concentration polarization resistance etc. are in interior factor impact, and general charging current can not reach this value yet, if but battery power shortage charging current also can be greater than 25A.Consider that the battery on market is all used battery, every battery all can have certain difference as the oxidation of pile crown, and the factors such as the slight sulfuration of both inner pad, are set as 20A by setting current threshold, do not affect the result of determination of battery.Although after sufficient very little the but interior metal lead of internal resistance total overall reaction be lead sulfate, therefore do not have ion to participate in reaction, it is very little that electric current will become.Through the reality test charging current value of 10 minutes, be greater than 20A, after charging, battery capacity is still greater than 80% normal capacity, if that is to say that the battery current value 10 minutes time after charging that is greater than standard internal resistance for test internal resistance is greater than 20A and can be judged as battery, after charging, can normally use, otherwise can be judged as battery, scrap and should change.
In battery charging process, the variation of internal resistance is all descending, reaction from voltage has two kinds to ask condition: the one, and normal battery power shortage, during charging, voltage changes from low to high, is to be generally elevated to 15V (maintenance-free battery 15V constant-voltage charge) from 12V, and electric current is by being greatly progressively reduced to zero; Another kind is that battery has sulfation, this situation charging voltage is generally first high rear low high again, undulate, when being because starting, this on pole plate, has the crystallization of one deck lead sulfate, progressively decomposition internal resistance along with lead sulfate crystallization after the very large but charging of internal resistance a few minutes progressively reduces, charging voltage also can be along with reduction, and charging current progressively increases.When voltage drop when inner lead sulfate crystallization decomposes to a certain degree to a certain extent time battery reverted to normal battery, charging voltage will progressively change from low to high.
The 6-QW-68 type maintenance-free lead accumulator that the reality of take was below tested is example, and its main test process is as follows:
1. first the new battery after charged is carried out to 5S, 25A discharge test, by formula r=(Vo-V1)/I, calculate the standard internal resistance of battery, actual test is 4.6 milliohms, using 1.1 times of this internal resistances, 5.1 milliohms are as standard internal resistance, and the battery that is less than this value through internal resistance test is fully charged good battery.
2, by being carried out to constant-current discharge, mesuring battary calculates its internal resistance, in order to reduce erroneous judgement, using 2 times of standard internal resistance, be that 10.2 milliohms are as the boundary of bad battery, after tested internal resistance be less than 2 times of standard internal resistances may for the battery of power shortage can be normal after charging, if mesuring battary is rechargeable battery, what be greater than 2 times of standard internal resistances is judged to be internal damage, cannot repair; If mesuring battary is uncharged battery, and its internal resistance is greater than standard internal resistance, then judges by charging measurement.
Be illustrated in figure 2 the charging curve of battery, battery, after 100% electric discharge, is tested internal resistance 6.5 milliohms, and charging current 25A after 10 minutes, illustrates battery power shortage, normal after charging.
Be illustrated in figure 3 the charging curve of the battery of slight sulfuration, its actual measurement internal resistance is 9 milliohms, between standard internal resistance and 2 times of standard internal resistances, but because it is uncharged battery, need after charging, judge again.By charging curve, can find out, its charging voltage is progressively reduced by 15V, illustrates that internal resistance is progressively reducing, and after 10 minutes, charging current is 25A, illustrates that battery can repair as good battery.
Be illustrated in figure 4 the charging curve of the serious sulfuration of inside battery, its actual measurement internal resistance 27 milliohms although be greater than 2 times of standard internal resistances, because it is uncharged battery, need judge after charging again.By charging curve, can find out, during charging, electric current progressively rises by 0, and 10 minutes after-current 25A illustrate after charging and can repair as normal battery.
Be illustrated in figure 5 the charging curve of bad battery, its actual measurement internal resistance is 16 milliohms, is greater than 2 times of standard internal resistances, carried out again charging measurement, by charging curve, can find out, during charging, to start to be reduced to rapidly 3A after large be bad battery to electric current below, illustrate that inside battery damages, and can fill electricity.
Be illustrated in figure 6 the bad battery charging curve of interior welds, during test, charging current is unstable, occurs that charging curve is jagged, can be bad battery certainly, mostly is inner rosin joint or pole plate bad.
The test case of limited battery is more than provided, and battery is all sail 6-QW-68 type maintenance-free lead accumulator, and through the actual test comparison of a large amount of batteries, above-mentioned method of testing judging nicety rate is more than 95%.
The utility model provides a kind of detector that uses above-mentioned battery lossless detection method, as shown in Figure 1, comprise the controlled rectification circuit for being connected with power supply, the output terminal of controllable flow circuit, for connecting and composing charging circuit with accumulator, is serially connected with charging control switch J1 in charging circuit; This detector also comprises a discharge circuit that is serially connected with discharge control switch J2 and discharge resistance and for detection of the voltage isolation detection circuit of battery tension with for detection of the current sensor of electric current.The present embodiment provides a kind of controller that utilizes to realize the control mode that charging is controlled, and charging control switch J1, discharge control switch J2, current sensor and controlled rectification circuit are all connected with controller with voltage isolation detection circuit.
(the present embodiment is three QA～QC (metal-oxide-semiconductors that model is IRF65N06) in discharge circuit, to be also connected with one group of switching tube for controlled discharge electric current, certainly also different according to the available number of the size of switching tube model and power), the control end of switching tube is connected with controller by switch driving circuit (as shown in figure 17), controller output pwm signal is controlled MOS switching tube by switch driving circuit, makes the electric current on discharge resistance keep constant.
The current sensor of the present embodiment adopts high-precision hall DC current sensor, comprise the discharge current sensor device being serially connected in discharge circuit and be serially connected in the charging current sensor in charging circuit, because the direction of current of charging current and discharge current is different, the error causing in order to reduce reversal link, improve accuracy of detection, therefore adopt two current sensors, the current signal of sensor output 0-5V is directly read in by the AD mouth of single-chip microcomputer.Certainly for reducing costs, also can adopt one both can survey the bidirectional current sensor that charging current also can be surveyed discharge current.
As shown in Figure 7, the controlled rectification circuit of the present embodiment adopts the mode of AC-DC-high-frequency ac-controlled direct current, comprise the electromagnetic compatibility circuit connecting in turn, rectification circuit, the controlled half-bridge inversion circuit being formed by two switching tubes, transformer and not control rectifying circuit, concrete principle is as follows: first the alternating voltage of the 220V of power supply is passed through by L1-2, the electromagnetic compatibility circuit that L1-2 forms is processed, again the voltage after processing is converted to 300V DC voltage through rectification circuit BR1, then via switching tube Q1-5, after the controlled half-bridge inversion circuit that Q1-6 forms is high-frequency ac voltage by the inversion of 300V DC voltage, by transformer T, regulate again, finally by the DC voltage that control rectifying circuit is not converted to 15V by 300V high-frequency ac voltage, charged a battery.
As shown in Figure 8, the controller of the present embodiment adopts STM32F103 single-chip microcomputer, and this single-chip microcomputer is to take embedded 32 8-digit microcontrollers that ARM is kernel, 64 pins, built-in 16 12 bit A/D converters, 6 PWM controllers, various interface is very abundant, is the single-chip microcomputer that a performance is very superior.
The FMQ end of single-chip microcomputer is also connected with the warning circuit consisting of BELL and gauge tap Q1; ADJ_MODE end is connected with display circuit DISPLY, this display circuit adopts touching liquid-crystal display screen, can receive by serial ports the data of single-chip microcomputer, also can send instruction to single-chip microcomputer by touch-screen, by parameters such as Single-chip Controlling and adjusting charging voltage, charging current discharge currents.This single-chip microcomputer is used for gathering the data such as cell voltage, electric current, battery temperature, and data are delivered to LCDs demonstration, also can intuitively show charging curve simultaneously; Data can also be sent to other equipment by RS485 or USB interface.In addition, this single-chip microcomputer is also inputted to be connected with and is connected to charging, electric discharge, automatic three regulating keys.
The battery current detection display A_IN end of single-chip microcomputer is connected with the A_IN terminal in Figure 12; Battery voltage detection shows that terminal V_IN is connected with the V_IN terminal in battery voltage detection circuit, and the other end of battery voltage detection is connected with VOUT+ end, and this circuit is charging set self control signal, plays pre-pressure stabilization function.
As shown in Figure 7, rectification circuit BR1 output terminal is provided with relay J DQ2, and for realizing precharge, triode Q8 controls the coil control circuit of JDQ2, and the control end label of triode Q8 is AC JDQ, is connected in the respective terminal of single-chip microcomputer; In the charging circuit being connected with VOUT+ end, be serially connected with charge relay JDQ1 (being charging control switch), in the coil control circuit of JDQ1, be connected with triode Q7, the control end DC_JDQ of Q7 is connected to the DC_JDQ end (as shown in Figure 8) of single-chip microcomputer, to control cut-offfing of JDQ1.
Be illustrated in figure 9 the voltage isolation detection circuit of the present embodiment, this circuit voltage input end is connected with accumulator, its voltage output end is connected with single-chip microcomputer, adopt isolation optocoupler HCNR200 to realize, HCNR200 is a kind of high linearity analog photoelectricity coupling mechanism, have a LED and two light-emitting diode PD1, PD2, PD1 and amplifier U1 form the light that feedback circuit monitoring LED sends, and make the light signal of LED output more stable; PD2 receives after light signal, by amplifier U2, the current conversion receiving, is voltage signal.This circuit has been realized by controller charging set has been finely tuned.
As shown in Figure 10～Figure 12, by switching tube Q1-5, the controlled half-bridge inversion circuit that Q1-6 forms is connected with single-chip microcomputer by voltage-regulation driving circuit, concrete structure is as follows: as shown in Figure 8, the PWM of single-chip microcomputer is connected respectively corresponding drive amplification circuit with PWM1 end, export corresponding signal V_REF (as shown in figure 10) and A_ADJ (as shown in figure 11), V_REF and A_ADJ are connected to PWM controller U1 (model is KA3525) and export corresponding drive control signal DRV1 and DRV2 (as shown in figure 12), DRV1 and DRV2 control the switching tube Q1-5 of half-bridge circuit again by a driving transformer and driving circuit, Q1-6 (as shown in Figure 7).
As shown in Figure 13 A and Figure 13 B, charging set of the present utility model also comprises that connects an anti-holding circuit, this circuit comprises a resistance and the optocoupler G being connected in series with it, the former limit of optocoupler G is connected with accumulator, secondary and single-chip microcomputer (DCFJJC end) are connected with ground, and the former limit of optocoupler is also parallel with an electric capacity, and its control principle is as follows: when accumulator connects when correct, not conducting of optocoupler G, D point is noble potential; When reverse connection of accumulator, optocoupler G conducting, D point current potential drags down, and optocoupler is connect to designature passes to single-chip microcomputer, when single-chip microcomputer detects accumulator, connects inverse time, sends warning, and forbids charge relay action.
Be the overload protecting circuit of the present embodiment as shown in figure 14; the former limit of transformer T be provided with one for the protection of mutual inductor CT (as shown in Figure 7); measurement result feeds back to YBDL terminal (DL, DL1 through diode rectifier bridge output to YBDL) by DL and DL1, then holds by the SOFT_START that triode Q2 is connected to PWM controller U1.
As shown in figure 15, charging set of the present utility model also comprises an auxiliary power circuit, the input end of this circuit connects output terminals A C, the AC1 of electromagnetic compatibility circuit, after the alternating current pressuring meridian rectification circuit of input, by No. 4 output transformers, be converted to again the direct supply of needed all size, the former limit of described transformer is connected with a chopping switching tube Q3, and Q3 is controlled by pwm chip U5 (model is UC3845), to regulate original edge voltage.
As shown in figure 16, the input port for detection of voltage of the utility model single-chip microcomputer is inputted separately battery voltage signal by the voltage detecting line four end testing circuits separated with the current loading line that detects electric current, namely the current loading line of charging and voltage detecting line are separated, avoid the voltage tester precision at the line pressure drop affects battery two ends that cause because of the charging current on load line, improved greatly the precision of output voltage, prevented that charging set from damaging battery because voltage is inaccurate.
If need to battery in enormous quantities be detected, can many detectors be connected into Sampling network by the CAN interface of single-chip microcomputer separately, and can to the detection case of each battery, be monitored by a host computer, and by the print data memory of every battery.
Maintenance-free lead accumulator is because its shell seals, so the quality of battery cannot be found by visual examination the fault of battery.Charging set of the present utility model can be by observing the charging curve judgement battery quality of accumulator on display screen, check whether inside exists fault to accumulator, this function for the new inside battery failure welding of procuratorial work of great use, if particularly automobile complete system plant is by the bad battery entrucking of interior welds, during probably because of vehicle launch, electric current is larger, inside battery sparking, causes battery explosion, and Mou automobile production of this phenomenon producer occurred.
The course of work and the principle of the utility model detector are as follows:
First connect battery, turn on the power switch after K, by touch-screen, input battery size, after the parameters such as battery CC A value, press " automatically test " button by the first adhesive electric discharge of single-chip microcomputer relay J 2, and the conducting state by PWM gauge tap pipe makes the electric current on discharge resistance keep constant by the discharge current of setting.After electric discharge 5S, stop, calculate the internal resistance value of battery, then by the cell voltage data of measuring, the internal resistance of cell, the CCA value of battery etc. shows in instrument, the internal resistance value of single-chip microcomputer by test be stored in after the standard internal resistance relatively of inner corresponding battery size, by discharge data, surveyed battery is divided into: good battery, need to survey after rechargeable battery, three kinds, bad battery also shows again.
For the battery of surveying again after needs charging, single-chip microcomputer is opened charge relay J1 automatically, charging circuit work, and Single-chip Controlling charging circuit carries out modified constant-voltage charge by voltage, the electric current set, and constant voltage 15V maximum current 25A was to battery charging 10 minutes.By parameter displays such as charging curve, charging voltage, charging currents on liquid crystal display, and be bad battery according to the battery that charging curve and 10 minutes charging current values are less than 20A, what 10 minutes current values were greater than 20A needs two kinds of rechargeable batteries for good battery, and test result is shown.If again press " automatically " key in automatic test mode, automatically stop test.If only need charge or discharge, corresponding button be can press and only charging or only discharging function realized, again press and change key and automatically quit work.
Claims (6)
1. a maintenance-free lead accumulator nondestructive testing instrument, it is characterized in that: comprise the controlled rectification circuit for being connected with power supply, the output terminal of described controlled rectification circuit, for connecting and composing charging circuit with accumulator, is serially connected with charging control switch in charging circuit; This detector also comprises a discharge circuit that is serially connected with discharge control switch and discharge resistance and for detection of the voltage isolation detection circuit of battery tension with for detection of the current sensor of electric current.
2. maintenance-free lead accumulator nondestructive testing instrument according to claim 1, is characterized in that: in described discharge circuit, be also connected with one group for the switching tube of controlled discharge electric current.
3. maintenance-free lead accumulator nondestructive testing instrument according to claim 1, is characterized in that: described controlled rectification circuit comprises the rectification circuit connecting in turn, the controlled half-bridge inversion circuit consisting of two switching tubes, transformer and control rectifying circuit not.
4. maintenance-free lead accumulator nondestructive testing instrument according to claim 1, it is characterized in that: described current sensor is Hall DC current sensor, comprise the discharge current sensor being serially connected in discharge circuit and be serially connected in the charging current sensor in charging circuit.
5. maintenance-free lead accumulator nondestructive testing instrument according to claim 1, is characterized in that: the detection line of described voltage isolation detection circuit and the detection line of current sensor divide and be arranged.
6. according to the maintenance-free lead accumulator nondestructive testing instrument described in claim 1～5 any one; it is characterized in that: this detector also comprises the anti-holding circuit that connects for being connected with accumulator; describedly connect anti-holding circuit and comprise an optocoupler; the former limit of optocoupler is connected with accumulator, and the secondary two ends of optocoupler are connected with ground with single-chip microcomputer respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320892305.9U CN203745616U (en) | 2013-12-31 | 2013-12-31 | Maintenance-free lead-acid storage battery nondestructive testing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320892305.9U CN203745616U (en) | 2013-12-31 | 2013-12-31 | Maintenance-free lead-acid storage battery nondestructive testing instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203745616U true CN203745616U (en) | 2014-07-30 |
Family
ID=51345400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320892305.9U Expired - Fee Related CN203745616U (en) | 2013-12-31 | 2013-12-31 | Maintenance-free lead-acid storage battery nondestructive testing instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203745616U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104297693A (en) * | 2014-10-10 | 2015-01-21 | 武汉黎赛科技有限责任公司 | Detection grading device for storage battery |
| CN106443156A (en) * | 2016-10-31 | 2017-02-22 | 成都雅骏新能源汽车科技股份有限公司 | Current measuring circuit for electrical automobile and realization method of current measuring circuit |
| CN108073110A (en) * | 2017-12-28 | 2018-05-25 | 上海神力科技有限公司 | A kind of multifunctional fuel battery testing platform controller |
| CN111157907A (en) * | 2019-12-30 | 2020-05-15 | Oppo广东移动通信有限公司 | Detection method and device, charging method and device, electronic device and storage medium |
| CN113125979A (en) * | 2019-12-31 | 2021-07-16 | 华为技术有限公司 | Storage battery internal resistance detection device and method |
-
2013
- 2013-12-31 CN CN201320892305.9U patent/CN203745616U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104297693A (en) * | 2014-10-10 | 2015-01-21 | 武汉黎赛科技有限责任公司 | Detection grading device for storage battery |
| CN106443156A (en) * | 2016-10-31 | 2017-02-22 | 成都雅骏新能源汽车科技股份有限公司 | Current measuring circuit for electrical automobile and realization method of current measuring circuit |
| CN106443156B (en) * | 2016-10-31 | 2023-06-30 | 成都雅骏新能源汽车科技股份有限公司 | Electric automobile current measurement circuit |
| CN108073110A (en) * | 2017-12-28 | 2018-05-25 | 上海神力科技有限公司 | A kind of multifunctional fuel battery testing platform controller |
| CN108073110B (en) * | 2017-12-28 | 2024-04-23 | 上海神力科技有限公司 | Multifunctional fuel cell test board controller |
| CN111157907A (en) * | 2019-12-30 | 2020-05-15 | Oppo广东移动通信有限公司 | Detection method and device, charging method and device, electronic device and storage medium |
| CN113125979A (en) * | 2019-12-31 | 2021-07-16 | 华为技术有限公司 | Storage battery internal resistance detection device and method |
| US12072388B2 (en) | 2019-12-31 | 2024-08-27 | Huawei Technologies Co., Ltd. | Apparatus and method for detecting internal resistance of battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104155609B (en) | A kind of maintenance-free lead accumulator lossless detection method and nondestructive testing instrument | |
| CN101312293B (en) | Power lithium battery intelligent management system | |
| CN103941210B (en) | The checking monitoring system of a kind of BMS and method thereof | |
| CN203745616U (en) | Maintenance-free lead-acid storage battery nondestructive testing instrument | |
| CN201360156Y (en) | Charging and discharging management system for improving safety and service life of series-connected battery set | |
| CN106646267A (en) | Method and device for detecting service life of battery of power distribution terminal | |
| CN105429226A (en) | High-capacity charging-discharging battery management system | |
| CN103475054B (en) | A kind of lithium battery charger of Based Intelligent Control and charge control method | |
| CN106410946B (en) | Power supply circuit for distribution line fault positioning device and power supply method thereof | |
| CN207938239U (en) | A kind of BMS battery management systems practical traning platform | |
| CN207730852U (en) | A kind of charging pile detecting system of electric vehicle | |
| CN115877228B (en) | Storage battery charge and discharge monitoring method and system with remote nuclear capacity | |
| CN106921182A (en) | A device and method for improving the voltage consistency of a flow battery stack | |
| CN104655973B (en) | A kind of method and apparatus that battery module short circuit is detected in ups system | |
| CN108832686A (en) | Charge circuit and charge circuit detection method | |
| CN103872727A (en) | Method for determining largest use current of lithium-ion battery | |
| CN207336643U (en) | A kind of electric car insulation detection device | |
| CN202870190U (en) | Comprehensive testing stand for charger used for electric bicycle | |
| CN211123194U (en) | Battery internal resistance measuring device | |
| CN103645441A (en) | Method for Judging charging/discharging state of vanadium battery in operation process | |
| CN103744029B (en) | A kind of evaluation method based on internal resistance measurement cell residual capacity | |
| CN203707825U (en) | Storage battery charger | |
| CN202474130U (en) | Backup battery pack system | |
| CN105375586A (en) | Battery charge and discharge management device and metering instrument manufactured by the same | |
| CN201611385U (en) | Automatic detecting device of communication battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140730 Termination date: 20211231 |