CN201037857Y - Device for testing output current of charger - Google Patents
Device for testing output current of charger Download PDFInfo
- Publication number
- CN201037857Y CN201037857Y CNU2007201200176U CN200720120017U CN201037857Y CN 201037857 Y CN201037857 Y CN 201037857Y CN U2007201200176 U CNU2007201200176 U CN U2007201200176U CN 200720120017 U CN200720120017 U CN 200720120017U CN 201037857 Y CN201037857 Y CN 201037857Y
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- resistance
- triode
- load unit
- charger
- control circuit
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a charger output current testing device, comprising an input end utilized to connect with an output end of a charger to be tested, and also a fixed load module connected with the input end, a comparison control circuit module connected with the load module and an output indication module which outputs comparison result of the comparison control circuit module, wherein, current output by the charger to be tested runs through the fixed load module, and the comparison control circuit module compares voltage drop generated on the fixed load module and then inputs the comparison result in the output indication module. The utility model has the advantages of simple structure, accurate detection result and easy judgment of the detection result.
Description
Technical field
The utility model relates to a kind of source current pick-up unit, relates in particular to a kind of detecting device for output current of charger power supply.
Background technology
The performance test of charger in batch process is very important, the test of semi-manufacture electric current and voltage is very big to the first-pass yield influence of finished product in the production, the output of existing charger power supply detects adopts output terminal with the charger finished product directly to connect load and multimeter comes output current is detected more, use this simple detection device to detect that not only speed is slow, efficient is low, and criterion is also different with personnel's difference, even if the operator of observation acumen, the long-time product of same model of checking also can cause visual fatigue, thereby increased production cost, False Rate is strengthened, also brought difficulty for the personal management of manufacturing enterprise.
The utility model content
The technical problems to be solved in the utility model provides a kind of simple in structure, testing result accurately and the charger output current proving installation judged easily of testing result.
Goal of the invention of the present utility model is achieved through the following technical solutions:
The utility model charger output current proving installation, mainly comprise: be used for the input end that is connected with charger output terminal to be detected, wherein: this charger output current proving installation also comprises the setting load blocks that is connected with this input end, comparison control circuit module that is connected with this load blocks and the output indicating module that comparison control circuit module comparative result is exported; Wherein, the electric current of charger output terminal to be detected output is through setting load blocks, after described comparison control circuit module compares the voltage drop that produces on this setting load blocks with in the input and output indicating module as a result.
On the said structure basis, wherein:
Above-mentioned charger output current proving installation, wherein: described setting load blocks comprises: the upper limit is set load unit and lower limit set load unit.
Above-mentioned charger output current proving installation, wherein: described comparison control circuit module comprises: set load unit upper limit comparison control circuit that is connected and the lower limit comparison control circuit that is connected with above-mentioned lower limit set load unit with the above-mentioned upper limit.
Above-mentioned charger output current proving installation, wherein: described output indicating module comprises: upper limit output indicating circuit that is connected with above-mentioned upper limit comparison control circuit and the lower limit output indicating circuit that is connected with above-mentioned lower limit comparison control circuit.
Improvement as such scheme:
Above-mentioned charger output current proving installation, wherein: described charger output current proving installation comprises that also being arranged on above-mentioned input end and the described upper limit sets between load unit and the lower limit set load unit and be used to switch the change-over switch that this input end is connected above-mentioned setting load unit state.
On the said structure basis, wherein:
Above-mentioned charger output current proving installation, wherein: described input end is by input port, the relay that is connected with this input port, first adjustable resistance that is connected with this relay, base stage and first triode that this first adjustable resistance is connected and collector is connected with relay, second resistance that is connected with this first transistor emitter; The 4th resistance that second triode that collector is connected with relay, second adjustable resistance, one end are connected with this second transistor base, the other end is connected with relay, be connected with this second transistor emitter is formed.
Above-mentioned charger output current proving installation, wherein: the amplifying circuit that described lower limit set load unit is made up of above-mentioned first adjustable resistance, first triode, second resistance constitutes, and this lower limit set load unit is determined the operating voltage point of this load unit by adjusting the first adjustable resistance resistance.
Above-mentioned charger output current proving installation, wherein: the amplifying circuit that described upper limit setting load unit is made up of above-mentioned second adjustable resistance, second triode, the 4th resistance constitutes, and this upper limit is set load unit and determined the operating voltage point of this load unit by adjusting the second adjustable resistance resistance.
Above-mentioned charger output current proving installation, wherein: described lower limit comparison control circuit by the 8th resistance and the 9th resistance of first comparer, series connection, be connected the tenth resistance and second electric capacity that series connection between this first comparator output terminal and the reference voltage input forms feedback circuit and form, wherein, the 8th resistance and the 9th resistance that is connected with the reference voltage input of this first comparer respectively, the sampled voltage input end of this first comparer is connected with the emitter of above-mentioned first triode.
Above-mentioned charger output current proving installation, wherein: described upper limit comparison control circuit by the 12 resistance and the 13 resistance of second comparer, series connection, be connected this second comparator output terminal and be that the 11 resistance and first electric capacity that series connection forms feedback circuit between the sampled voltage input end is formed, wherein, the 12 resistance and the 13 resistance that is connected with the reference voltage input of this second comparer respectively, the sampled voltage input end of this second comparer is connected with the emitter of above-mentioned second triode.
Above-mentioned charger output current proving installation, wherein: described lower limit output indicating circuit is made of with the 3rd triode, the 6th resistance that is connected with the 3rd transistor base respectively and the 7th resistance that first light emitting diode, collector are connected with this first light emitting diode the 5th resistance of series connection, wherein, the 3rd transistor base is connected with the output terminal of first comparer.
Above-mentioned charger output current proving installation, wherein: the 4th triode that described upper limit output indicating circuit is connected with this second light emitting diode by the 16 resistance of connecting and second light emitting diode, collector, the 14 resistance and the 15 resistance that is connected with the 4th transistor base respectively constitute, wherein, the 4th transistor base is connected with the output terminal of second comparer.
Above-mentioned charger output current proving installation, wherein: the normally closed point of described relay is connected with the collector of first triode, and be connected with the collector of second triode normal battle of this relay.
The utility model adopts charger output terminal to be detected to connect the mode of setting load blocks, comparison control circuit module and output indicating module, the user can conveniently judge charger output current test result to be detected intuitively according to the indicator signal of output indicating module, it is less that the high user of the reliability of this kind device produces the erroneous judgement possibility, the efficient height, and this kind device simple in structure, cost is lower; This device can also be by being provided for switching the mode that input end is connected the change-over switch of setting the load unit state, and the user can reach the purpose of the upper and lower bound electric current that detects charger respectively easily by the switching of this change-over switch.
Description of drawings
In order to be easy to explanation, the utility model is done to describe in detail by following preferred embodiment and accompanying drawing.
The circuit diagram of a kind of embodiment of Fig. 1 the utility model charger output current proving installation;
Embodiment
Please consult Fig. 1 together, a kind of embodiment of the utility model, comprise in this embodiment: be used for the input end that is connected with charger output terminal to be detected, the setting load blocks that is connected with this input end, comparison control circuit module that is connected with load blocks and the output indicating module that comparison control circuit module comparative result is exported, the setting load blocks comprises: the upper limit is set load unit and lower limit set load unit, and the setting resistance of the load standard upper and lower limit resistance with charger to be detected respectively is identical; The comparator circuit module comprises: set load unit upper limit comparison control circuit that is connected and the lower limit comparison control circuit that is connected with the lower limit set load unit with the upper limit; The output indicating module comprises: upper limit output indicating circuit that is connected with upper limit comparison control circuit and the lower limit output indicating circuit that is connected with the lower limit comparison control circuit;
In this embodiment, input end is connected with relay K 1 with the second adjustable resistance R3, the other end that this second triode Q2 base stage is connected by the first triode Q1 that the relay K 1 that is connected with input port, the first adjustable resistance R1 that is connected with relay K 1, base stage are connected with the first adjustable resistance R1 and collector is connected with relay K 1, second resistance R 2 that is connected with the first triode Q1 emitter, the second triode Q2, an end that collector is connected with relay K 1, and the 4th resistance R 4 that is connected with this second triode Q2 emitter is formed; The amplifying circuit that the lower limit set load unit is made up of the above-mentioned first adjustable resistance R1, the first triode Q1, second resistance R 2 constitutes, and the lower limit set load unit is determined the operating voltage point of this load unit by adjusting the first adjustable resistance R1 resistance; The amplifying circuit that upper limit setting load unit is made up of the second adjustable resistance R3, the second triode Q2, the 4th resistance R 4 constitutes, and the upper limit is set load unit and determined the operating voltage point of this load unit by adjusting the second adjustable resistance R3 resistance; The lower limit comparison control circuit by the 8th resistance R 8 and the 9th resistance R 9 of the first comparer IC1, series connection, be connected the tenth resistance R 10 and second capacitor C 2 that series connection between the first comparer IC1 output terminal and the reference voltage input forms feedback circuit and form, wherein, the sampled voltage input end of the 8th resistance R 8 that is connected with the reference voltage input of the first comparer IC1 and the 9th resistance R 9, the first comparer IC1 is connected with the emitter of the above-mentioned first triode Q1 respectively; Upper limit comparison control circuit by the 12 resistance R 12 and the 13 resistance R 13 of the second comparer IC2, series connection, be connected the 11 resistance R 11 and first capacitor C 1 that series connection between the sampled voltage input end of this second comparer IC2 output terminal and comparer forms feedback circuit and form, wherein, the sampled voltage input end of the 12 resistance R 12 that is connected with the reference voltage input of the second comparer IC2 and the 13 resistance R 13, the second comparer IC2 is connected with the emitter of the second triode Q2 respectively; The 3rd triode Q3 that lower limit output indicating circuit is connected with this first light emitting diode D1 by the 5th resistance R 5 of connecting and the first light emitting diode D1, collector, the 6th resistance R 6 and the 7th resistance R 7 that is connected with the 3rd triode Q3 base stage respectively constitute, wherein, the 3rd triode Q3 base stage is connected with the output terminal of the first comparer IC1; The 4th triode Q4 that upper limit output indicating circuit is connected with the second light emitting diode D2 by the 16 resistance R 16 of connecting and the second light emitting diode D2, collector, the 14 resistance R 14 and the 15 resistance R 15 that is connected with the 4th triode Q4 base stage respectively constitute, wherein, the 4th triode Q4 base stage is connected with the output terminal of the second comparer IC2; The normally closed point of relay K is connected with the collector of the first triode Q1, and be connected with the collector of the second triode Q2 the normal battle of this relay K; In this embodiment,, the reliability that guarantees first, second triode Q1, Q2 protects the triode (not shown) for having increased EI type heating radiator; First, second comparer IC1, IC2 are integrated in the integrated circuit (IC)-components that model is ICLM358 in this embodiment, and wherein, 1,2,3 pin of this device are formed the first comparer IC1, and 5,6,7 pin are formed the second comparer IC2.
Also comprise in this embodiment being arranged between input end and upper limit setting load unit and the lower limit set load unit and be used to switch the change-over switch K2 that this input end is connected above-mentioned setting load unit state, this change-over switch K2 is self-lock switch not, the duty of pilot relay K1; When change-over switch K2 disconnected in this embodiment, the output current of tested charger was according to the following flow direction: normally closed point-the first triode Q1 collector-first triode Q1 emitter-second resistance R 2-charger negative pole of charger positive pole-input port-relay K 1; The lower bound current value of charger to be detected form with voltage on second resistance R 2 is imported through 3 pin of first comparer IC1 of IC LM358,1 pin is exported to the 3rd triode Q3, when the first light emitting diode D1 is bright, charger bottoming electric current then to be detected is qualified, represents that when the first light emitting diode D1 does not work charger bottoming electric current to be detected is defective; When K2 connects, the output current of tested charger is according to the following flow direction: the negative pole of normal battle-the second triode Q2 collector-second triode Q2 emitter-the 4th resistance R 4-charger of charger positive pole-input port-relay K 1, the upper bound current value of charger to be detected form with voltage on the 4th resistance R 4 is imported through 6 pin of the second comparer IC2 of IC LM358,7 pin are exported to Q4, obtain embodying with not working with the bright of the second diode D2, when the second light emitting diode D2 is bright, charger output upper limit current then to be detected is qualified, represents that when the second light emitting diode D2 does not work charger output upper limit current to be detected is defective.
The embodiment of the above is a better embodiment of the present utility model, be not to limit concrete practical range of the present utility model with this, scope of the present utility model comprises and is not limited to this embodiment, for example, can remove change-over switch K2, only keep the upper limit and set load unit or lower limit set load unit one of them and corresponding comparison control circuit module that is connected with this load blocks and the output indicating module that comparison control circuit module comparative result is exported; The equivalence variation that all shapes according to the utility model, structure are done all comprises in the protection domain of the present utility model.
Claims (10)
1. charger output current proving installation, mainly comprise: be used for the input end that is connected with charger output terminal to be detected, it is characterized in that: this charger output current proving installation also comprises the setting load blocks that is connected with this input end, comparison control circuit module that is connected with this load blocks and the output indicating module that comparison control circuit module comparative result is exported; Wherein, the electric current of the charger output terminal to be detected output setting load blocks of flowing through, after described comparison control circuit module compares the voltage drop that produces on this setting load blocks with in the input and output indicating module as a result.
2. charger output current proving installation according to claim 1 is characterized in that: described setting load blocks comprises: the upper limit is set load unit and lower limit set load unit.
3. charger output current proving installation according to claim 2 is characterized in that: described comparison control circuit module comprises: set load unit upper limit comparison control circuit that is connected and the lower limit comparison control circuit that is connected with above-mentioned lower limit set load unit with the above-mentioned upper limit.
4. charger output current proving installation according to claim 3 is characterized in that: described output indicating module comprises: upper limit output indicating circuit that is connected with above-mentioned upper limit comparison control circuit and the lower limit output indicating circuit that is connected with above-mentioned lower limit comparison control circuit.
5. charger output current proving installation according to claim 4 is characterized in that: described charger output current proving installation comprises that also being arranged on above-mentioned input end and the described upper limit sets between load unit and the lower limit set load unit and be used to switch the change-over switch that this input end is connected above-mentioned setting load unit state.
6. charger output current proving installation according to claim 5 is characterized in that: first adjustable resistance that described input end is connected with this relay by input port, the relay that is connected with this input port, an end, base stage and first triode that the other end of this first adjustable resistance is connected and collector is connected with relay, second resistance that is connected with this first transistor emitter; Second adjustable resistance that second triode that collector is connected with relay, an end are connected with this second transistor base, the other end connect relay, and the 4th resistance that is connected with this second transistor emitter is formed.
7. charger output current proving installation according to claim 6, it is characterized in that: the amplifying circuit that described lower limit set load unit is made up of above-mentioned first adjustable resistance, first triode, second resistance constitutes, and this lower limit set load unit is determined the operating voltage point of this load unit by adjusting the first adjustable resistance resistance;
The amplifying circuit that described upper limit setting load unit is made up of above-mentioned second adjustable resistance, second triode, the 4th resistance constitutes, and this upper limit is set load unit and determined the operating voltage point of this load unit by adjusting the second adjustable resistance resistance.
8. charger output current proving installation according to claim 7, it is characterized in that: described lower limit comparison control circuit by the 8th resistance and the 9th resistance of first comparer, series connection, be connected the tenth resistance and second electric capacity that series connection between this first comparator output terminal and the reference voltage input forms feedback circuit and form, wherein, the 8th resistance and the 9th resistance that is connected with the reference voltage input of this first comparer respectively, the sampled voltage input end of this first comparer is connected with the emitter of above-mentioned first triode;
Described upper limit comparison control circuit by the 12 resistance and the 13 resistance of second comparer, series connection, be connected the 11 resistance and first electric capacity that series connection between this second comparator output terminal and the sampled voltage input end forms feedback circuit and form, wherein, the 12 resistance and the 13 resistance that is connected with the reference voltage input of this second comparer respectively, the sampled voltage input end of this second comparer is connected with the emitter of above-mentioned second triode.
9. charger output current proving installation according to claim 8, it is characterized in that: described lower limit output indicating circuit is made of with the 3rd triode, the 6th resistance that is connected with the 3rd transistor base respectively and the 7th resistance that first light emitting diode, collector are connected with this first light emitting diode the 5th resistance of series connection, wherein, the 3rd transistor base is connected with the output terminal of first comparer;
The 4th triode that described upper limit output indicating circuit is connected with this second light emitting diode by the 16 resistance of connecting and second light emitting diode, collector, the 14 resistance and the 15 resistance that is connected with the 4th transistor base respectively constitute, wherein, the 4th transistor base is connected with the output terminal of second comparer.
10. charger output current proving installation according to claim 9 is characterized in that: the normally closed point of described relay is connected with the collector of first triode, and be connected with the collector of second triode normal battle of this relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201200176U CN201037857Y (en) | 2007-05-11 | 2007-05-11 | Device for testing output current of charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201200176U CN201037857Y (en) | 2007-05-11 | 2007-05-11 | Device for testing output current of charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201037857Y true CN201037857Y (en) | 2008-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201200176U Expired - Fee Related CN201037857Y (en) | 2007-05-11 | 2007-05-11 | Device for testing output current of charger |
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| Country | Link |
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| CN (1) | CN201037857Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721935A (en) * | 2011-03-30 | 2012-10-10 | 海洋王照明科技股份有限公司 | Charger over current test circuit and test method thereof |
| CN102854378A (en) * | 2011-06-30 | 2013-01-02 | 海洋王照明科技股份有限公司 | Current testing circuit |
| CN104777377A (en) * | 2014-12-31 | 2015-07-15 | 重庆川仪自动化股份有限公司 | System and method for detecting output properties of lead-acid battery charger |
| CN105137965A (en) * | 2015-09-18 | 2015-12-09 | 航宇救生装备有限公司 | Detection method and apparatus for multichannel igniting control system |
-
2007
- 2007-05-11 CN CNU2007201200176U patent/CN201037857Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721935A (en) * | 2011-03-30 | 2012-10-10 | 海洋王照明科技股份有限公司 | Charger over current test circuit and test method thereof |
| CN102721935B (en) * | 2011-03-30 | 2015-07-08 | 海洋王照明科技股份有限公司 | Charger over current test circuit and test method thereof |
| CN102854378A (en) * | 2011-06-30 | 2013-01-02 | 海洋王照明科技股份有限公司 | Current testing circuit |
| CN102854378B (en) * | 2011-06-30 | 2015-01-28 | 海洋王照明科技股份有限公司 | Current testing circuit |
| CN104777377A (en) * | 2014-12-31 | 2015-07-15 | 重庆川仪自动化股份有限公司 | System and method for detecting output properties of lead-acid battery charger |
| CN104777377B (en) * | 2014-12-31 | 2017-09-15 | 重庆川仪自动化股份有限公司 | Lead-acid battery charger output characteristics detecting system and its detection method |
| CN105137965A (en) * | 2015-09-18 | 2015-12-09 | 航宇救生装备有限公司 | Detection method and apparatus for multichannel igniting control system |
| CN105137965B (en) * | 2015-09-18 | 2019-01-25 | 航宇救生装备有限公司 | A kind of multichannel Iganition control system detection method and device |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20080319 Termination date: 20160511 |