CN201600435U - Lithium ion battery protecting IC circuit board testing device - Google Patents
Lithium ion battery protecting IC circuit board testing device Download PDFInfo
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- CN201600435U CN201600435U CN2009202622687U CN200920262268U CN201600435U CN 201600435 U CN201600435 U CN 201600435U CN 2009202622687 U CN2009202622687 U CN 2009202622687U CN 200920262268 U CN200920262268 U CN 200920262268U CN 201600435 U CN201600435 U CN 201600435U
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Abstract
The utility model provides a lithium ion battery protecting IC circuit board testing device, which comprises a voltage analogue unit, a power consumption signal feedback unit, an over-discharge to-be-judged signal feedback unit, an over-charge to-be-judged signal feedback unit, an over-current to-be-judged signal feedback unit and a judgment unit. The voltage analogue unit is used for providing analogue lithium ion battery voltage according to external control signals and connected with a voltage input end of a to-be-tested circuit board, the power consumption signal feedback unit is used for outputting power consumption signals according to output voltage of the to-be-tested circuit board, the over-discharge to-be-judged signal feedback unit is used for outputting over-discharge to-be-judged signals according to the output voltage of the to-be-tested circuit board, the over-charge to-be-judged signal feedback unit is used for outputting over-charge to-be-judged signals according to the output voltage of the to-be-tested circuit board, the over-current to-be-judged signal feedback unit is used for outputting over-current to-be-judged signals according to the output voltage of the to-be-tested circuit board, and the judgment unit is used for judging whether the to-be-tested circuit board is qualified or not according to the power consumption signals, the over-discharge to-be-judged signals, the over-charge to-be-judged signals and the over-current to-be-judged signals. Compared with the prior art, the lithium ion battery protecting IC circuit board testing device has the advantages of high efficiency and simple operation.
Description
Technical field
The utility model belongs to lithium ion battery protection IC wiring board field tests, relates in particular to a kind of lithium ion battery protection IC circuit board test device.
Background technology
Existing lithium ion battery protection IC wiring board is tested by hand by the people usually, and the resource that need use has adjustable direct supply and digital multimeter.Because the project that the battery protection ic wiring board need be tested comprises power consumption, over-charge protective, crosses and put protection, overcurrent protection etc., need test the protection situation of each batteries one by one, test a wiring board and will carry out repeatedly the voltage switching.So with manual method test, inefficiency, complicated operation also needs artificially to judge underproof wiring board simultaneously, in large batch of test, occurs the disconnected situation of erroneous judgement easily.
The utility model content
The utility model is tested inefficiency, the technical matters of complicated operation by hand for solving existing lithium ion battery protection IC circuit board test device by the people.
For solving the body of asking that exists in the prior art, the utility model provides a kind of lithium ion battery protection IC circuit board test device, and described wiring board is provided with lithium ion battery protection IC, comprising:
In order to the voltage analog unit of simulation lithium ion battery voltage to be provided according to external control signal,
Described voltage analog device links to each other with the voltage input end of wiring board to be measured;
In order to export the power loss signal feedback unit of power loss signal according to the output voltage of wiring board to be measured;
Put the mistake of waiting to declare signal and put and wait to declare the signal feedback unit in order to export according to the output voltage of wiring board to be measured;
In order to output overcharges and waits to declare overcharging of signal and wait to declare the signal feedback unit according to the output voltage of wiring board to be measured;
Wait to declare the signal feedback unit in order to wait the overcurrent of declaring signal according to the output voltage output overcurrent of wiring board to be measured;
In order to respectively according to power loss signal, cross put signal to be declared, overcharge signal to be declared, overcurrent signal to be declared judges the judging unit that wiring board to be measured is whether qualified.
Further, described lithium ion battery protection IC circuit board test device also comprises: in order to the external control unit of described external control signal to be provided; In order to connect the communication unit of voltage analog unit and external control unit.
Further, described voltage analog unit comprises: in order to the analog digital voltage cell of analog digital voltage to be provided; In order to described digital voltage is converted to the D/A conversion unit of aanalogvoltage.
Further, described lithium ion battery protection IC circuit board test device also comprises the voltage amplification unit that described aanalogvoltage is amplified.
Further, described voltage amplification unit comprises: first operational amplifier, second operational amplifier, first resistance, second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the first transistor, transistor seconds; The positive input terminal of first operational amplifier is connected with the output terminal of AD conversion unit, the output terminal of first operational amplifier connects an end of first resistance, the other end of first resistance is connected with ground through second resistance, and the negative input end of first operational amplifier is connected between first resistance and second resistance; The positive input terminal of second operational amplifier links to each other with the output terminal of first operational amplifier; The output terminal of second operational amplifier is connected with the 3rd resistance, the 4th resistance, the 5th resistance respectively; The other end of the 3rd resistance links to each other with the base stage of the first transistor, the collector of the first transistor is connected with power supply, the emitter of the first transistor is connected with the emitter of transistor seconds, the other end of the 4th resistance is connected with the emitter of the first transistor, the other end of the 5th resistance is connected with the base stage of transistor seconds, and the collector of transistor seconds is connected with ground; One end of the 6th resistance is connected with the emitter of the first transistor, and the other end of the 6th resistance is the output terminal of voltage amplification unit.
Further, described power loss signal feedback unit comprises: four-operational amplifier, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance; The positive input terminal of described four-operational amplifier links to each other with the output terminal of voltage amplification unit by the 7th resistance, and described the 7th resistance is connected with ground by the 9th resistance near an end of the positive input terminal of four-operational amplifier; The negative input end of described four-operational amplifier is connected with the emitter of described the first transistor by the 8th resistance; The negative input end of described four-operational amplifier is connected with the output terminal of described four-operational amplifier; The output terminal of described four-operational amplifier is connected with judging unit.
Further, described overcharging waited to declare the signal feedback unit and comprised: the 3rd operational amplifier, the 11 resistance, the 12 resistance, the 13 resistance, the 14 resistance, the 15 resistance, the 16 resistance; The positive input terminal of described the 3rd operational amplifier is connected with the output terminal of voltage amplification unit by the 12 resistance; The 12 resistance is connected with ground through the 14 resistance near an end of the 3rd operational amplifier positive input terminal; The negative input end of the 3rd operational amplifier links to each other with the malleation output terminal of wiring board to be measured by the 11 resistance, and the other end of the 11 resistance is connected with ground by the 13 resistance.
Further, described mistake is put and is waited to declare the signal feedback unit and comprise first switch, and described first switch is connected between the malleation output terminal of judging unit and wiring board to be measured.
Further, described over-current signal feedback unit comprises: the 5th operational amplifier, the 6th operational amplifier, the 17 resistance, the 18 resistance, the 19 resistance, PMOS pipe; The positive input terminal of the 5th operational amplifier links to each other with judging unit, the output terminal of the 5th operational amplifier links to each other with the 17 resistance, the other end of the 17 resistance links to each other with ground by the 18 resistance, and the negative input end of the 5th operational amplifier is connected between the 17 resistance and the 18 resistance; The positive input terminal of the 6th operational amplifier links to each other with the output terminal of the 5th operational amplifier; The output terminal of the 6th operational amplifier links to each other with the grid of PMOS pipe, and the drain electrode of PMOS pipe is connected with the negative pressure output terminal of wiring board to be measured, and the source electrode of PMOS pipe is connected with power supply.
A kind of lithium ion battery protection IC circuit board test device that the utility model provides, comprise: in order to the voltage analog unit of simulation lithium ion battery voltage to be provided according to external control signal, described voltage analog device links to each other with the voltage input end of wiring board to be measured; In order to export the power loss signal feedback unit of power loss signal according to the output voltage of wiring board to be measured; Put the mistake of waiting to declare signal and put and wait to declare the signal feedback unit in order to export according to the output voltage of wiring board to be measured; In order to output overcharges and waits to declare overcharging of signal and wait to declare the signal feedback unit according to the output voltage of wiring board to be measured; Wait to declare the signal feedback unit in order to wait the overcurrent of declaring signal according to the output voltage output overcurrent of wiring board to be measured; In order to respectively according to power loss signal, cross put signal to be declared, overcharge signal to be declared, overcurrent signal to be declared judges the judging unit that wiring board to be measured is whether qualified.Compared with prior art, has the efficient height, advantage simple to operate.
Description of drawings
Fig. 1 is the circuit theory diagrams of the utility model embodiment;
Fig. 2 is the circuit diagram of the wiring board to be measured of the utility model embodiment;
Fig. 3 is the circuit diagram of the utility model embodiment voltage amplification unit;
Fig. 4 is the circuit diagram of the utility model embodiment power loss signal feedback unit;
Fig. 5 is that the utility model embodiment overcharges the circuit diagram of waiting to declare the signal feedback unit;
Fig. 6 is that the utility model embodiment crosses and puts the circuit diagram of waiting to declare the signal feedback unit;
Fig. 7 is the circuit diagram that the utility model embodiment overcurrent waits to declare the signal feedback unit;
Fig. 8 is the circuit diagram of the utility model embodiment judging unit and D/A conversion unit.
Embodiment
Clearer for technical matters, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Fig. 1 is the circuit theory diagrams of the utility model embodiment; Fig. 2 is the circuit diagram of the wiring board to be measured of the utility model embodiment; Fig. 3 is the circuit diagram of the utility model embodiment voltage amplification unit; Fig. 4 is the circuit diagram of the utility model embodiment power loss signal feedback unit; Fig. 5 is that the utility model embodiment overcharges the circuit diagram of waiting to declare the signal feedback unit; Fig. 6 is that the utility model embodiment crosses and puts the circuit diagram of waiting to declare the signal feedback unit; Fig. 7 is the circuit diagram that the utility model embodiment overcurrent waits to declare the signal feedback unit; Fig. 8 is the circuit diagram of the utility model embodiment judging unit and D/A conversion unit.To a kind of lithium ion battery protection IC circuit board test device shown in Figure 8, described wiring board is provided with lithium ion battery protection IC, comprising as Fig. 1:
In order to the voltage analog unit of simulation lithium ion battery voltage to be provided according to external control signal,
Described voltage analog device links to each other with the voltage input end of wiring board to be measured;
In order to export the power loss signal feedback unit of power loss signal according to the output voltage of wiring board to be measured;
Put the mistake of waiting to declare signal and put and wait to declare the signal feedback unit in order to export according to the output voltage of wiring board to be measured;
In order to output overcharges and waits to declare overcharging of signal and wait to declare the signal feedback unit according to the output voltage of wiring board to be measured;
Wait to declare the signal feedback unit in order to wait the overcurrent of declaring signal according to the output voltage output overcurrent of wiring board to be measured;
In order to respectively according to power loss signal, cross put signal to be declared, overcharge signal to be declared, overcurrent signal to be declared judges the judging unit that wiring board to be measured is whether qualified.
Further, described lithium ion battery protection IC circuit board test device also comprises: in order to the external control unit of described external control signal to be provided; In order to connect the communication unit of voltage analog unit and external control unit.
Further, described voltage analog unit comprises: in order to the analog digital voltage cell of analog digital voltage to be provided; In order to described digital voltage is converted to the D/A conversion unit of aanalogvoltage.
Further, described lithium ion battery protection IC circuit board test device also comprises the voltage amplification unit that described aanalogvoltage is amplified.
Further, described voltage amplification unit comprises: the first operational amplifier Q1, the second operational amplifier Q2, first resistance R 1, second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the first transistor, transistor seconds; The positive input terminal of first operational amplifier is connected with the output terminal of AD conversion unit, the output terminal of first operational amplifier connects an end of first resistance, the other end of first resistance is connected with ground through second resistance, and the negative input end of first operational amplifier is connected between first resistance and second resistance; The positive input terminal of second operational amplifier links to each other with the output terminal of first operational amplifier; The output terminal of second operational amplifier is connected with the 3rd resistance, the 4th resistance, the 5th resistance respectively; The other end of the 3rd resistance links to each other with the base stage of the first transistor, the collector of the first transistor is connected with power supply, the emitter of the first transistor is connected with the emitter of transistor seconds, the other end of the 4th resistance is connected with the emitter of the first transistor, the other end of the 5th resistance is connected with the base stage of transistor seconds, and the collector of transistor seconds is connected with ground; One end a1 of the 6th resistance is connected with the emitter of the first transistor, and the other end a2 of the 6th resistance is the output terminal of voltage amplification unit.
Further, described power loss signal feedback unit comprises: four-operational amplifier Q4, the 7th resistance R 7, the 8th resistance R 8, the 9th resistance R 9, the tenth resistance R 10; The positive input terminal of described four-operational amplifier links to each other with the output terminal of voltage amplification unit by the 7th resistance, and described the 7th resistance is connected with ground by the 9th resistance near an end of the positive input terminal of four-operational amplifier; The negative input end of described four-operational amplifier is connected with the emitter of described the first transistor by the 8th resistance; The negative input end of described four-operational amplifier is connected with the output terminal of described four-operational amplifier; The output terminal of described four-operational amplifier is connected with judging unit.
Further, described overcharging waited to declare the signal feedback unit and comprised: the 3rd operational amplifier Q3, the 11 resistance R the 11, the 12 resistance R the 12, the 13 resistance R the 13, the 14 resistance R the 14, the 15 resistance R the 15, the 16 resistance R 16; The positive input terminal of described the 3rd operational amplifier is connected with the output terminal of voltage amplification unit by the 12 resistance; The 12 resistance is connected with ground through the 14 resistance near an end of the 3rd operational amplifier positive input terminal; The negative input end of the 3rd operational amplifier links to each other with the malleation output terminal of wiring board to be measured by the 11 resistance, and the other end of the 11 resistance is connected with ground by the 13 resistance.
Further, described mistake is put and is waited to declare the signal feedback unit and comprise first switch P 2, and described first switch is connected between the malleation output terminal of judging unit and wiring board to be measured.
Further, described over-current signal feedback unit comprises: the 5th operational amplifier Q5, the 6th operational amplifier Q6, the 17 resistance R the 17, the 18 resistance R the 18, the 19 resistance R 19, PMOS pipe; The positive input terminal of the 5th operational amplifier links to each other with judging unit, the output terminal of the 5th operational amplifier links to each other with the 17 resistance, the other end of the 17 resistance links to each other with ground by the 18 resistance, and the negative input end of the 5th operational amplifier is connected between the 17 resistance and the 18 resistance; The positive input terminal of the 6th operational amplifier links to each other with the output terminal of the 5th operational amplifier; The output terminal of the 6th operational amplifier links to each other with the grid of PMOS pipe, and the drain electrode of PMOS pipe is connected with the negative pressure output terminal of wiring board to be measured, and the source electrode of PMOS pipe is connected with power supply.
Elaborate below in conjunction with the course of work of accompanying drawing to the utility model embodiment:
The utility model adopts main control singlechip C8051F120 and external D/A conversion chip AD5724, successively the power consumption of test battery protection IC wiring board, overcharge, cross and put and overcurrent protection function.Single-chip processor i/o port P0.2, P0.3, P0.4, P0.5, P0.6, P0.7 respectively with AD5724 port SDIN, SYNC ,/LDAC ,/CLR, SCLK, SDO be connected, control AD5724 exports 4 road aanalogvoltage VA, VB, VC, VD, is amplified to VT1, VT2, VT3, VT4 through 4 road operational amplifier amplifying circuits respectively; Each batteries duty of this voltage analog offers the battery protection ic wiring board.A1 connects power consumption sampling resistor R6 between the a2, feed back to C8051F analog input port AIN0.0, AIN0.1, AIN0.2, AIN0.3 after amplifying via the operational amplifier difference.The P+ end of battery protection ic wiring board and VT1 are connected to the AIN2.0 sampling of C8051F through behind the comparer.The built-in DAC0 port of C8051F is connected to the operational amplifier amplifying circuit, by operational amplifier output voltage control gate pmos utmost point opening.VCC connects resistance R 19, and another pin of R19 connects the negative feedback pin of PMOS pipe source electrode and operational amplifier.The drain electrode of PMOS pipe connects the P-port of external cell protection IC wiring board.Be concrete test philosophy and flow process below.
The first step, power consumption test
AD5724 output VA, VB, VC, VD are amplified to VT1, VT2, VT3, VT4 through differential amplifier circuit, and each batteries normal working voltage of this voltage analog offers external cell protection IC wiring board.Resistance R 6 is protection IC wiring board power consumption sampling resistor; the voltage that its electric current produces of flowing through when sampling VT1, VT2, VT3, VT4 normal power supply; feed back to C8051F analog input port AIN0.0, AIN0.1, AIN0.2, AIN0.3 via differential amplifier circuit, detect protection IC wiring board power consumption.
In second step, overcharge test
VT1 overcharges test: AD5724 output normal voltage VA, VB, VC, VD; guarantee battery protection ic wiring board normal operating conditions; again VA is changed to protection IC by normal voltage and overcharges downscale protection threshold voltage VACL; the P+ end compares the two-port change in voltage with the VT1 end by comparer simultaneously, is sampled by AIN2.0.AIN2.0 is 0 level during protection IC operate as normal, as sample 0 level this moment, then protects IC not enter guard mode, judges PASS and continues next testing procedure; As sample high level this moment, then protect IC to enter guard mode, judge FAIL and stop test.Next stage, VA rises on downscale protection threshold voltage VACL basis and overcharges upscale protection threshold voltage VACH, and the P+ end compares by comparer with the VT1 end simultaneously.Protect IC to should be guard mode, sampling AIN2.0 end is high level 2.4V, judges that PASS continues next step test this moment.Otherwise, still be then FAIL of 0 level as AIN2.0, stop test.
VT2; VT3, VT4 overcharges test: similar VT1 overcharges test, AD5724 output normal voltage VA, VB, VC, VD; at test VT2; VT3 when VT4 overcharges, is changed to VB, VC, VD protection IC respectively and overcharges the downscale protection threshold voltage; and keep its excess-three economize on electricity to press; sampling AIN2.0 judges, test by after respectively VB, VC, VD are risen to again and overcharge the upscale protection threshold voltage, sampling AIN2.0 judges.
In the 3rd step, cross and put test
VT1 crosses puts test: AD5724 output normal voltage VA, VB, VC, VD are changed to the VA normal voltage protection IC again and cross and put limit protection threshold voltage VAOH; Gauge tap P2 closure is changed by AIN2.1 port sampling P+ port level simultaneously.AIN2.1 is 2.4V during protection IC operate as normal, samples 2.4V as AIN2.1 this moment, and protection IC does not enter guard mode, judges PASS, continues next testing procedure; Then protect IC to enter guard mode as be sampled as 0V this moment, judge FAIL and stop test.Next stage, VA was reduced on upscale protection threshold voltage VAOH basis and put down limit protection threshold voltage VAOL, and the AIN2.1 that samples equally end detects P+ port level to be changed.Protection IC should be guard mode at the moment, and the AIN2.1 port is 0V, judges PASS, continues next step test.Otherwise, still be then FAIL of 2.4V as AIN2.1, stop test.
VT2; VT3, VT4 cross puts test: similar VT1 crosses puts test, AD5724 output normal voltage VA, VB, VC, VD; at test VT2; VT3, VT4 cross when putting, and respectively VB, VC, VD are changed to protection IC and cross and put limit protection threshold voltage; and keep its excess-three economize on electricity to press; sampling AIN2.1 judges, test by after respectively VB, VC, VD were reduced to again and put down limit protection threshold voltage, sampling AIN2.1 judges.
In the 4th step, cross current test
AD5724 output normal voltage VA, VB, VC, VD, C8051 are by the DAC0 output voltage, behind the amplifying circuit of operational amplifier, by operational amplifier output pin control gate pmos utmost point conducting state.VCC flows into battery protection ic circuit with a certain size electric current by P-by resistance R 19 this moment.Detect P+ port level in real time by AIN2.1 and change, at normal condition P+ port output high level, after P-imports a certain size electric current; AIN2.1 detects the P+ port and is changed to the 0.3V low level by high level 2.4V; then protect IC that the overcurrent protection state takes place, judge PASS, otherwise FAIL.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (9)
1. a lithium ion battery is protected the IC circuit board test device, and described wiring board is provided with lithium ion battery protection IC, it is characterized in that: comprising:
In order to the voltage analog unit of simulation lithium ion battery voltage to be provided according to external control signal, described voltage analog device links to each other with the voltage input end of wiring board to be measured;
In order to export the power loss signal feedback unit of power loss signal according to the output voltage of wiring board to be measured;
In order to output overcharges and waits to declare overcharging of signal and wait to declare the signal feedback unit according to the output voltage of wiring board to be measured;
Put the mistake of waiting to declare signal and put and wait to declare the signal feedback unit in order to export according to the output voltage of wiring board to be measured;
Wait to declare the signal feedback unit in order to wait the overcurrent of declaring signal according to the output voltage output overcurrent of wiring board to be measured;
In order to respectively according to power loss signal, cross put signal to be declared, overcharge signal to be declared, overcurrent signal to be declared judges the judging unit that wiring board to be measured is whether qualified.
2. lithium ion battery protection IC circuit board test device according to claim 1 is characterized in that: also comprise:
In order to the external control unit of described external control signal to be provided;
In order to connect the communication unit of voltage analog unit and external control unit.
3. lithium ion battery protection IC circuit board test device according to claim 1, it is characterized in that: described voltage analog unit comprises:
In order to the analog digital voltage cell of analog digital voltage to be provided;
In order to described digital voltage is converted to the D/A conversion unit of aanalogvoltage.
4. lithium ion battery protection IC circuit board test device according to claim 3 is characterized in that: also comprise the voltage amplification unit that described aanalogvoltage is amplified.
5. lithium ion battery protection IC circuit board test device according to claim 4, it is characterized in that: described voltage amplification unit comprises: first operational amplifier, second operational amplifier, first resistance, second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the first transistor, transistor seconds; The positive input terminal of first operational amplifier is connected with the output terminal of AD conversion unit, the output terminal of first operational amplifier connects an end of first resistance, the other end of first resistance is connected with ground through second resistance, and the negative input end of first operational amplifier is connected between first resistance and second resistance; The positive input terminal of second operational amplifier links to each other with the output terminal of first operational amplifier; The output terminal of second operational amplifier is connected with the 3rd resistance, the 4th resistance, the 5th resistance respectively; The other end of the 3rd resistance links to each other with the base stage of the first transistor, the collector of the first transistor is connected with power supply, the emitter of the first transistor is connected with the emitter of transistor seconds, the other end of the 4th resistance is connected with the emitter of the first transistor, the other end of the 5th resistance is connected with the base stage of transistor seconds, and the collector of transistor seconds is connected with ground; One end of the 6th resistance is connected with the emitter of the first transistor, and the other end of the 6th resistance is the output terminal of voltage amplification unit.
6. according to claim lithium ion battery protection according to claim 5 IC circuit board test device, it is characterized in that: described power loss signal feedback unit comprises: four-operational amplifier, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance; The positive input terminal of described four-operational amplifier links to each other with the output terminal of voltage amplification unit by the 7th resistance, and described the 7th resistance is connected with ground by the 9th resistance near an end of the positive input terminal of four-operational amplifier; The negative input end of described four-operational amplifier is connected with the emitter of described the first transistor by the 8th resistance; The negative input end of described four-operational amplifier is connected with the output terminal of described four-operational amplifier; The output terminal of described four-operational amplifier is connected with judging unit.
7. according to claim lithium ion battery according to claim 4 protection IC circuit board test device, it is characterized in that: described overcharging waited to declare the signal feedback unit and comprised: the 3rd operational amplifier, the 11 resistance, the 12 resistance, the 13 resistance, the 14 resistance, the 15 resistance, the 16 resistance; The positive input terminal of described the 3rd operational amplifier is connected with the output terminal of voltage amplification unit by the 12 resistance; The 12 resistance is connected with ground through the 14 resistance near an end of the 3rd operational amplifier positive input terminal; The negative input end of the 3rd operational amplifier links to each other with the malleation output terminal of wiring board to be measured by the 11 resistance, and the other end of the 11 resistance is connected with ground by the 13 resistance.
8. according to claim lithium ion battery protection according to claim 1 IC circuit board test device; it is characterized in that: described mistake is put and is waited to declare the signal feedback unit and comprise first switch, and described first switch is connected between the malleation output terminal of judging unit and wiring board to be measured.
9. according to claim lithium ion battery protection according to claim 1 IC circuit board test device, it is characterized in that: described over-current signal feedback unit comprises: the 5th operational amplifier, the 6th operational amplifier, the 17 resistance, the 18 resistance, the 19 resistance, PMOS pipe; The positive input terminal of the 5th operational amplifier links to each other with judging unit, the output terminal of the 5th operational amplifier links to each other with the 17 resistance, the other end of the 17 resistance links to each other with ground by the 18 resistance, and the negative input end of the 5th operational amplifier is connected between the 17 resistance and the 18 resistance; The positive input terminal of the 6th operational amplifier links to each other with the output terminal of the 5th operational amplifier; The output terminal of the 6th operational amplifier links to each other with the grid of PMOS pipe, and the drain electrode of PMOS pipe is connected with the negative pressure output terminal of wiring board to be measured, and the source electrode of PMOS pipe is connected with power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202622687U CN201600435U (en) | 2009-12-30 | 2009-12-30 | Lithium ion battery protecting IC circuit board testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202622687U CN201600435U (en) | 2009-12-30 | 2009-12-30 | Lithium ion battery protecting IC circuit board testing device |
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| CN201600435U true CN201600435U (en) | 2010-10-06 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529319A (en) * | 2013-09-24 | 2014-01-22 | 福州开发区星云电子自动化有限公司 | Lithium battery protection plate testing system |
| CN104079846A (en) * | 2013-03-29 | 2014-10-01 | 索尼公司 | Comparator, solid-state imaging device, electronic apparatus, and driving method |
| CN105589041A (en) * | 2015-12-09 | 2016-05-18 | 上海斐讯数据通信技术有限公司 | Test method and test device for battery under-voltage discharge protection circuit |
-
2009
- 2009-12-30 CN CN2009202622687U patent/CN201600435U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104079846A (en) * | 2013-03-29 | 2014-10-01 | 索尼公司 | Comparator, solid-state imaging device, electronic apparatus, and driving method |
| CN103529319A (en) * | 2013-09-24 | 2014-01-22 | 福州开发区星云电子自动化有限公司 | Lithium battery protection plate testing system |
| CN103529319B (en) * | 2013-09-24 | 2016-09-14 | 福建星云电子股份有限公司 | Li-ion cell protection board test system |
| CN105589041A (en) * | 2015-12-09 | 2016-05-18 | 上海斐讯数据通信技术有限公司 | Test method and test device for battery under-voltage discharge protection circuit |
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