CN100529778C - Multiple battery insertion groove investigating system and method - Google Patents
Multiple battery insertion groove investigating system and method Download PDFInfo
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- CN100529778C CN100529778C CNB2006100611674A CN200610061167A CN100529778C CN 100529778 C CN100529778 C CN 100529778C CN B2006100611674 A CNB2006100611674 A CN B2006100611674A CN 200610061167 A CN200610061167 A CN 200610061167A CN 100529778 C CN100529778 C CN 100529778C
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
A test system of multiple cell insertion-slot is prepared as connecting relay circuit to virtual cell for selecting out one of virtual cells and inserting one selected virtual cell into corresponding cell insertion slot, using cell simulator to provide power supply voltage to said virtual cell through relay circuit, connecting test unit to cell simulator and relay circuit as well as cell insertion slot for testing out whether cell insertion slot is worked properly or not.
Description
Technical field
The present invention relates to a kind of battery insertion groove investigating system, relate in particular to a kind of a plurality of battery insertion groove investigating system.
Background technology
At present, mostly electronic equipment all has a plurality of battery insertion grooves that discharge and recharge function, when external power source takes place can use battery to supply with the electronic equipment stable power when unusual.So, externally power supply just often, battery need charge by the battery insertion groove of electronic equipment.This shows that the quality of battery insertion groove performance directly influences the production yield of electronic equipment.Whether all need to test its battery insertion groove that has before therefore, these electronic equipments dispatch from the factory normal.
Figure 1 shows that existing a plurality of battery insertion groove investigating systems 10, in test macro 10, artificially select battery 14 to insert in arbitrary battery insertion groove and carry out charge-discharge test.For example, when battery 14 is inserted into first battery insertion groove 120, the operator promptly measures the voltage of batteries 14 with ammeter 13.Simultaneously, proving installation 11 also can read the voltage and the electric current of electronic equipment 10 battery of reporting 14.If the difference of the voltage that voltage that ammeter 13 measures and proving installation 11 read does not exceed allowed band, and the current polarity that proving installation 11 reads is correct, then first battery insertion groove 120 is normal, otherwise first battery insertion groove 120 is unusual.
In having the test examining system now, battery 14 need insert first battery insertion groove 120 manually or second battery insertion groove 121 is tested, and the voltage of battery 14 need be artificial with ammeter 13 measurements, and carries out comparative analysis, has relatively poor testing efficiency.
Summary of the invention
In view of this, need provide a kind of a plurality of battery insertion groove investigating system and method, its tested battery insertion groove that can automatically switch improves testing efficiency.
A kind of a plurality of battery insertion groove investigating system is used to test the electronic equipment with described battery insertion groove, and it comprises a plurality of virtual battery, relay circuit, battery simulator and proving installation.Wherein, each virtual battery packet memory pin, identification code pin, start battery pin, positive voltage pin, negative voltage pin, first resistance, second resistance, the 3rd resistance, the 4th resistance.Relay circuit connects described virtual battery, is used for selecting one of described virtual battery and inserts corresponding battery insertion groove.Battery simulator is used for providing supply voltage to described virtual battery by relay circuit, and it comprises positive output pin, negative output pin, positive sensing pin, negative sensing pin, positive digital measures the voltage pin and the negative word measures the voltage pin.Proving installation links to each other with battery simulator, relay circuit and battery insertion groove, and whether be used for the work of test battery slot normal.
A kind of a plurality of battery insertion groove method of testing, whether be used to test the electronic equipment with described battery insertion groove normal, and this method of testing comprises: test system configurations is set; The read test data; Judge according to the test data that reads whether tested battery insertion groove is normal; And if tested battery insertion groove is normal, judge whether tested battery insertion groove is last.
The present invention uses relay circuit automatic switchover virtual battery to insert in the corresponding battery insertion groove and tests, and improves testing efficiency.
Description of drawings
Fig. 1 is existing a plurality of battery insertion groove investigating systems.
Fig. 2 is a plurality of battery insertion groove investigating systems of the present invention.
Fig. 3 is the internal module figure of proving installation of the present invention.
Fig. 4 is the physical circuit figure of a plurality of battery insertion groove investigating systems of the present invention.
Fig. 5 is a plurality of battery insertion groove test flow charts of the present invention.
Fig. 6 is the particular flow sheet of a plurality of battery insertion groove charging measurements of the present invention.
Fig. 7 is the particular flow sheet of a plurality of battery insertion groove charging of the present invention saturation testing.
Fig. 8 is the particular flow sheet of a plurality of battery insertion groove discharge tests of the present invention.
Embodiment
Fig. 2 is a plurality of battery insertion groove investigating systems 20 of the present invention, and it comprises proving installation 21, electronic equipment 22, first virtual battery 23, second virtual battery 24, battery simulator (battery simulator) 25, relay (relay switch) circuit 26 and external ac power source 27.Wherein, electronic equipment 22 has first battery insertion groove 220, second battery insertion groove 221 and power module 222.
Relay circuit 26 links to each other with first virtual battery 23, second virtual battery 24, is used for selecting corresponding battery insertion groove in the insertion electronic equipment 22 of described virtual battery.Battery simulator 25 links to each other with relay circuit 26, is used to provide supply voltage to first virtual battery 23 or second virtual battery 24.Proving installation 21 connection battery simulator 25, relay circuit 26 and electronic equipments 22 are used to test first battery insertion groove 23 or whether 24 work of second battery insertion groove are normal.External ac power source connects relay circuit 26, and provides outer power voltage to electronic equipment 22 by relay circuit 26.
Consult Fig. 3 simultaneously, Fig. 3 is the internal module figure of proving installation 21 of the present invention.Proving installation 21 comprises sets submodule 211, data read submodule 212, judgement submodule 213 and exception record submodule 214.
In the present embodiment, set submodule 211 setting relay circuits 26 and select first virtual battery, 23 insertions, first battery insertion groove 220 to test, perhaps select second virtual battery 24 to insert second battery insertion groove 221 and test.And, set submodule 211 and be used to set battery simulator 25 output voltage sizes, and export to first, second virtual battery 23,24 by relay circuit 26.Again, setting submodule 211 is more set relay circuit 26 and is switched on or off external ac power source 27.In other words, when carrying out charging measurement, set submodule 211 and set relay circuits 26 and connect external ac power source 27, make it give that power module 222 provides AC power in the electronic equipment 22; When carrying out discharge test, set submodule 211 and set relay circuit 26 cut-out external ac power source 27.
In the present embodiment, the voltage range that discharges and recharges of first, second virtual battery 23,24 is 10.8V to 12.6V.That is, the charging saturation voltage is 12.6V, and the discharge critical voltage is 10.8V.Again, in the present embodiment, when carrying out the charge and discharge test, setting submodule 211 setting battery simulators 25 output voltages is 12V; When charging saturation testing, setting submodule 211 setting battery simulators 25 output voltages is 12.6V.
Selecting arbitrary virtual battery 23 or 24 when relay circuit 26 inserts in the corresponding battery insertion groove 220 or 221, as: select first virtual battery 23 to insert first battery insertion groove 220, the data that data read submodule 212 read tests arrive, as voltage, electric current and the digital measurement voltage of 25 outputs of: battery simulator (digital voltagemeasure, DVM) and the voltage of first virtual battery 23 of electronic equipment 22 reports.
Judge that submodule 213 compares according to the data and the corresponding preset value that read, and then judge whether 220 work of first battery insertion groove are normal.If first battery insertion groove, 220 operation irregularities, then exception record submodule 214 writes down the relevant abnormalities information, as: abnormal data, unusual battery insertion groove, Exception Type etc.If first battery insertion groove 220 is working properly, judge that then submodule 214 judges whether first battery insertion groove 220 is last tested battery insertion groove.If whole testing process finishes.If not, then set submodule 211 setting relay circuits 26 and select second virtual battery, 24 insertions, second battery insertion groove 221 to test next time.
In the present embodiment, when virtual battery charged normal, the electric current that data read submodule 212 reads from battery simulator 25 was a negative value, and the DVM that reads is low level, as: 0V.Virtual battery is charged when saturated, and the electric current that data read submodule 212 reads from battery simulator 25 is zero, and the DVM that reads is high level, as: more than or equal to 10V.During virtual battery regular picture, the electric current that data read submodule 212 reads from battery simulator 25 on the occasion of, and the DVM that reads is a low level.
Figure 4 shows that the physical circuit figure of a plurality of battery insertion groove investigating systems 20 of the present invention.Wherein, first, second virtual battery 23,24 all has storer (EEPROM) pin, identification code (ID) pin, start battery (BAT-EN) pin, positive voltage (PACK+) pin and negative voltage (PACK-) pin.And first, second virtual battery 23,24 comprises storer 231 and 241, diode D1 and D2, a plurality of resistance R 11, R21, R31, R41, R12, R22, R32, R42 respectively.Relay circuit 26 comprise power switch SW1 and a plurality of switch SW n (n=2 ..., 8), wherein, each switch SW n (n=2,3, ..., 7) have the first end a, the second end b and control end c, power switch SW1 and switch SW 8 all have the first end e and control end f respectively.Again, switch SW 2, SW3 and SW4 are defined as first switch jointly; Switch SW 6, SW7 are defined as second switch jointly; Switch SW 5 is defined as the 3rd switch; Switch SW 8 is defined as the 4th switch.In the present embodiment, storer 231,241 is used for storing the essential information of first, second corresponding virtual battery 23,24.
Battery simulator 25 has positive output pin, negative output pin, positive sensing pin, negative sensing pin, positive DVM pin and negative DVM pin.
In first virtual battery 23, resistance R 11 and R21 are connected in series between storer 231 and storer pin, and the negative electrode of diode D1 is connected in the tie point of resistance R 11 and R21, its plus earth.Resistance R 31 is connected between the first end a of identification code pin and switch SW 6, and resistance R 41 is connected between the second end b of identification code pin and switch SW 6.The start battery pin links to each other with the first end a of switch SW 4, and the negative voltage pin links to each other with the first end a of switch SW 3, and the positive voltage pin links to each other with the first end a of switch SW 2.
Equally, in second virtual battery 24, resistance R 12 and R22 are connected in series between storer 241 and storer pin, and the negative electrode of diode D2 is connected in the tie point of resistance R 12 and R22, its plus earth.And resistance R 32 is connected between the first end a of identification code pin and switch SW 7, and resistance R 42 is connected between the second end b of identification code pin and switch SW 7.The start battery pin links to each other with the second end b of switch SW 4, and the negative voltage pin links to each other with the second end b of switch SW 3, and the positive voltage pin links to each other with the second end b of switch SW 2.
The control end c of switch SW 2, SW3 and SW4 links to each other with positive output pin, negative output pin and the positive DVM pin of battery simulator 25 respectively.The control end c of switch SW 6 and SW7 is connected to the first end a and the second end b of switch SW 5, and the control end c of switch SW 5 links to each other with the first end e of switch SW 8, and the control end f of switch SW 8 links to each other with the negative output pin of battery simulator 25.The first end e of power switch SW1 links to each other with power module 222, and its control end f links to each other with external ac power source 27.
In the present embodiment, the negative output pin of battery simulator 25, negative sensing pin and negative DVM pin common ground, and the positive output pin links to each other with positive sensing pin, and pass through resistance R 5 and link to each other with positive DVM pin.
In the present embodiment, power switch SW1 is used for selecting whether connect external ac power source 27, and when carrying out charging measurement, switch SW 1 is connected; When carrying out discharge test, switch SW 1 is turn-offed.Switch SW n (n=2,3 ..., 8) be used between first virtual battery 23 and second virtual battery 24, switching.When first virtual battery, the 23 selected insertion first battery insertion groove (not shown), the control end of switch SW 2, SW3, SW4, SW5 and the first end a all are switched on, otherwise then connect the control end c and the second end b of these switches.Switch SW 8 is turn-offed when first virtual battery 23 and second virtual battery 24 are switched, and guarantees that said two devices switches smoothly.Switch SW 6, SW7 are used to switch dissimilar batteries, promptly when switch SW 6 connects resistance R 31 and is connected R41, and its selected different battery types.
In the battery simulator 25, positive output pin output voltage is to first, second virtual battery 23,24.The positive sensing pin sensing battery simulator 25 actual voltage swings that export first, second virtual battery 23,24 to, and adjust its output voltage according to the virtual voltage that senses, make output voltage near setting the output voltage that submodule 211 sets.Positive DVM pin is used for the start battery pin of first, second virtual battery 23,24 of sensing, thereby judges the state of first, second virtual battery 23,24.In other words, when first, second virtual battery 23,24 normally discharged and recharged, the start battery pin was in activation (enable) state, and the voltage of DVM pin output is low level; When first, second virtual battery 23,24 chargings were saturated, the start battery pin was in decapacitation (disable) state, and the voltage of DVM pin output is high level.
Figure 5 shows that the process flow diagram of a plurality of battery insertion groove investigating systems of the present invention.Step S501 sets submodule 211 and sets test system configurations, promptly sets and chooses tested virtual battery, battery insertion groove etc.Step S503, data read submodule 212 reads relevant test data, as: the voltage of first virtual battery 23 of voltage, electric current and the DVM of battery simulator 25 outputs and electronic equipment 22 reports.Step S505 judges that submodule 213 judges according to the data that read whether tested battery insertion groove is normal.If tested battery insertion groove is unusual, execution in step S506 then, exception record submodule 506 record relevant abnormalities information, as: abnormal data, unusual battery insertion groove, Exception Type etc.If tested battery insertion groove is normal, judge that submodule 213 continues to judge whether tested battery insertion groove is last.If last, then whole testing process finishes.If be not last, re-execute step S501, set submodule 211 and reset test system configurations, and proving installation 21 carries out the test of next battery insertion groove.
Figure 6 shows that a plurality of battery insertion groove charging measurement of the present invention process flow diagram.Step S601, set submodule 211 and set the output voltage of battery simulator 25, for example: 12V, and set the duty of relay circuit 26, as: select first virtual battery 23 to insert first battery insertion groove 220, and more set relay circuit 26 and select external ac power source 27 to provide AC power to power module 222.
Step S603, data read submodule 212 read voltage (BS), electric current (BS) and the digital measurement voltage (DVM) of battery simulator 25 outputs, and read the voltage (RP) of electronic equipment 22 reports.
Step S605, whether the absolute value of judging the voltage difference that voltage that submodule 213 judges battery simulator 25 output and electronic equipment 22 are reported is less than a preset value, and promptly whether the difference of the two can be accepted.It should be noted that the definition of preset value can change according to different test environments, so the present invention does not limit preset value.If the absolute value of said two devices difference not in preset value, execution in step S606, exception record submodule 214 recording voltages are unusual.
If the absolute value of said two devices difference is in preset value, step S607 judges that submodule 213 judges that whether the electric current (BS) of battery simulator 25 outputs that read is less than zero.If the electric current that reads not is less than zero, execution in step S606.
If the electric current that reads is less than zero, step S609 judges that submodule 213 continues to judge whether the DVM that reads is low level, and whether promptly tested virtual battery is in enabled status.In the present embodiment, judge that submodule 213 judges whether DVM equals zero.If the DVM that reads is not equal to zero, then execution in step S606.In other embodiment of the present invention, step S605, S607 and S609 sequencing can exchange.
If the DVM that reads equals zero, step S611 judges that submodule 213 judges whether tested battery insertion groove is last battery insertion groove.If tested battery insertion groove is last, then whole testing process finishes.If tested battery insertion groove is not last, re-execute step S601, then set submodule 211 and reset test macro, promptly set relay circuit 26 and select the next battery insertion groove of test to test, for example: select second virtual battery 24 to insert in second battery insertion groove 221.
Figure 7 shows that a plurality of battery insertion groove charging of the present invention saturation testing process flow diagram, itself and process flow diagram shown in Figure 6 are basic identical, difference is: in step S701, the output voltage of setting submodule 211 setting battery simulators 25 is the saturated voltage of charging, as: 12.6V.Step S703, S705 are identical with step S603, S605 shown in Figure 6, therefore omit explanation.
At step S707, judge whether the electric current that submodule 213 judgements read equals zero.If be not equal to zero, execution in step S706 writes down described unusual.
If the electric current that reads equals zero, enter step S709, judge whether the DVM that submodule 213 reads is high level, judges promptly whether tested virtual battery is in the decapacitation state.In the present embodiment, judge that submodule 213 judges that whether DVM is more than or equal to 10V.If DVM is during less than 10V, execution in step S706.If DVM is during more than or equal to 10V, execution in step S711.Step S711 is identical with step S611 among Fig. 6, therefore omits explanation.
Figure 8 shows that a plurality of battery insertion groove discharge test of the present invention process flow diagram, itself and process flow diagram shown in Figure 5 are roughly the same, difference is: in step S801, set submodule 211 and set the power supply that relay circuit 26 turn-offs 27 pairs of power modules 222 of external ac power source.
Whether step S802 judges submodule 213 judges whether electronic equipment 22 starts shooting, promptly detect battery simulator 25 and successfully give electronic equipment 22 power supplies.If electronic equipment 22 is not started shooting, execution in step S806.
If electronic equipment 22 start, execution in step S803 and S805.Step S803, S805 are identical with step S603, S605 shown in Figure 6, therefore omit explanation.
Among the step S807, judge submodule 213 judges whether the current polarity that reads is normal, judge that simultaneously the electric current that reads is whether in the electric current preset range.If the electric current that reads not in the electric current preset range, execution in step S806.If the electric current that reads in the electric current preset range, execution in step S809 then.
A plurality of battery insertion groove investigating system of the present invention adopts the proving installation control relay circuit to select a corresponding battery insertion groove of insertion in a plurality of virtual battery to test, thereby avoids switching manually, improves testing efficiency.
Claims (16)
1. a plurality of battery insertion groove investigating systems, whether normal, it is characterized in that with described battery insertion groove if being used to test electronic equipment, and described a plurality of battery insertion groove investigating systems comprise:
A plurality of virtual battery, each virtual battery have storer pin, identification code pin, start battery pin, positive voltage pin and negative voltage pin, and it also comprises:
Storer is used to store the essential information of corresponding virtual battery;
First resistance;
Second resistance, itself and the described first resistance serial are connected between described storer and the described storer pin;
The 3rd resistance, the one end links to each other with described identification code pin; And
The 4th resistance, the one end links to each other with described identification code pin;
Relay circuit connects described virtual battery, is used for selecting one of described virtual battery and inserts corresponding battery insertion groove;
Battery simulator is used for providing supply voltage to described virtual battery by described relay circuit, and described battery simulator has:
The positive output pin;
The negative output pin;
Positive sensing pin is connected in described positive output pin;
Negative sensing pin is connected in described negative output pin;
Positive digital measures the voltage pin, links to each other with described positive output pin by the 5th resistance; And
The negative word measures the voltage pin, is connected in described negative output pin; And
Proving installation links to each other with described battery simulator, relay circuit and described battery insertion groove, and whether be used to test described battery insertion groove work normal.
2. a plurality of battery insertion groove investigating systems as claimed in claim 1 is characterized in that, described proving installation comprises:
Set submodule, be used to set the output voltage of described battery simulator, and set the duty of described relay circuit;
Reading submodule is used to read a plurality of test datas;
Judge submodule, be used for judging according to the test data that reads whether tested battery insertion groove is normal; And
The exception record submodule is used for writing down the unusual of test process.
3. a plurality of battery insertion groove investigating systems as claimed in claim 1 is characterized in that described relay circuit comprises power switch, are used to turn on and off external ac power source.
4. a plurality of battery insertion groove investigating systems as claimed in claim 1 is characterized in that, described relay circuit comprises a plurality of first switches, and it has first end, second end and control end respectively, are used for switching and testing described virtual battery; Wherein, first end of described first switch is connected to start battery pin, positive voltage pin and the negative voltage pin of first virtual battery, second end of described first switch is connected to start battery pin, positive voltage pin and the negative voltage pin of second virtual battery, and the positive digital that the control end of described first switch is connected to battery simulator measures voltage pin, positive output pin and negative output pin.
5. a plurality of battery insertion groove investigating systems as claimed in claim 4 is characterized in that described relay circuit comprises a plurality of second switches, and it has first end, second end and control end respectively; Wherein, one first end in the described second switch and second end respectively with described first virtual battery in the 3rd resistance link to each other with the 4th resistance, first end of another in the described second switch and second end respectively with described second virtual battery in the 3rd resistance link to each other with the 4th resistance.
6. a plurality of battery insertion groove investigating systems as claimed in claim 5 is characterized in that described relay circuit comprises the 3rd switch, and it has first end, second end and control end; Wherein, first end of described the 3rd switch and second end are connected to the control end of described second switch.
7. a plurality of battery insertion groove investigating systems as claimed in claim 6 is characterized in that described relay circuit comprises the 4th switch, and it has first end and control end; Wherein, first end of described the 4th switch with the control end of the 3rd switch link to each other, its control end is connected in the control end of first switch that links to each other with the negative voltage pin of described virtual battery slot.
8. a plurality of battery insertion groove method of testing, whether normal, it is characterized in that with described battery insertion groove if being used to test electronic equipment, and described a plurality of battery insertion groove method of testings comprise:
Set test system configurations;
The read test data;
Judge according to the test data that reads whether tested battery insertion groove is normal; And
If tested battery insertion groove is normal, judge whether tested battery insertion groove is last battery insertion groove.
9. a plurality of battery insertion groove method of testing as claimed in claim 8 is characterized in that, comprises when tested battery insertion groove is unusual the step of recording exceptional information.
10. a plurality of battery insertion groove method of testing as claimed in claim 8 is characterized in that, comprises that working as tested battery insertion groove is not to be last, sets the step of test system configurations.
11. a plurality of battery insertion groove method of testing as claimed in claim 8 is characterized in that, the step of setting test system configurations comprises the output voltage of setting battery simulator and the duty of relay circuit.
12. a plurality of battery insertion groove method of testing as claimed in claim 8 is characterized in that, the step of read test data comprises voltage, electric current and the digital measurement voltage that reads battery simulator output, and reads the step of the voltage that electronic equipment reports.
13. a plurality of battery insertion groove method of testing as claimed in claim 12 is characterized in that, judges according to the test data that reads whether normal step may further comprise the steps tested battery insertion groove:
Whether the absolute value of judging the output voltage of the battery simulator that reads and the voltage difference that electronic equipment is reported is less than preset value;
If less than preset value, judge whether the current polarity that reads is normal; And
If the current polarity that reads is normal, judge whether the digital measurement voltage that reads is normal.
14. a plurality of battery insertion groove method of testing as claimed in claim 13, it is characterized in that, the absolute value that comprises the voltage difference of reporting when the output voltage and the electronic equipment of the battery simulator that reads surpasses preset value, or the current polarity that reads is unusual, or the digital measurement electric voltage exception that reads, the step of recording exceptional information.
15. a plurality of battery insertion groove method of testing as claimed in claim 8 is characterized in that, the step of setting test system configurations comprises the step of judging whether electronic equipment starts shooting.
16. a plurality of battery insertion groove method of testing as claimed in claim 15 is characterized in that, comprises when electronic equipment is not started shooting the step of recording exceptional information.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100611674A CN100529778C (en) | 2006-06-16 | 2006-06-16 | Multiple battery insertion groove investigating system and method |
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| CNB2006100611674A CN100529778C (en) | 2006-06-16 | 2006-06-16 | Multiple battery insertion groove investigating system and method |
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| CN101089640A CN101089640A (en) | 2007-12-19 |
| CN100529778C true CN100529778C (en) | 2009-08-19 |
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Cited By (1)
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| US20150066416A1 (en) * | 2013-08-30 | 2015-03-05 | Ford Global Technologies, Llc | System and method for testing vehicle traction battery components |
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| CN101950266B (en) * | 2010-09-21 | 2012-04-11 | 中国人民解放军63961部队 | Self-adaptive detection route switching method |
| CN102033176A (en) * | 2010-10-25 | 2011-04-27 | 苏州高新区禾云设备设计事务所 | Battery external characteristic simulator |
| CN102654845B (en) * | 2011-03-02 | 2016-12-07 | 北京百卓网络技术有限公司 | Power detecting system and method |
| CN102999405B (en) * | 2011-09-16 | 2016-11-23 | 李清雪 | Test device of computer main board |
| CN105911452A (en) * | 2016-04-15 | 2016-08-31 | 福建联迪商用设备有限公司 | Testing circuit, testing device, and testing method for multi-SAM card module |
| CN115453153B (en) * | 2022-11-14 | 2023-03-24 | 天津力神电池股份有限公司 | Dummy battery for lithium battery test |
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| CN2479513Y (en) * | 2001-01-17 | 2002-02-27 | 陈军 | Battery three-parameter measuring gauge |
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| CN101089640A (en) | 2007-12-19 |
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