CN204789905U - Lithium batteries step up two unification management chip failure detector circuit - Google Patents
Lithium batteries step up two unification management chip failure detector circuit Download PDFInfo
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- CN204789905U CN204789905U CN201520339990.1U CN201520339990U CN204789905U CN 204789905 U CN204789905 U CN 204789905U CN 201520339990 U CN201520339990 U CN 201520339990U CN 204789905 U CN204789905 U CN 204789905U
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Abstract
The utility model relates to a lithium batteries step up two unification management chip failure detector circuit. The utility model discloses a procedure download module, power module, AD collection module, single -chip computer control module, install the chip test module, reference voltage source module, liquid crystal display module. Procedure download module adopts the ISP interface direct continuous with single -chip computer control module, receives single -chip computer control module's control, power module is responsible for converting 12V's input voltage to 5V and 3.7V, for the singlechip and the two unification chips power supplies of stepping up of charging, AD collection module selects 11 tunnel 12 AD conversion chip TLC2543, and install the chip test module is four ageing seats of installation on detection circuitry promptly, make installation testing and the dismantlement above that of charge management chip ASC8826. The utility model discloses can once only test the quality of 4 each pins of lithium batteries management chip ASC8826 to use the liquid crystal display test result.
Description
Technical field
The utility model relates to electronic circuit field, and particularly relating to the circuit whether a kind of single lithium battery charging management chip of inspection is qualified, is specifically a kind of quality for each pin of test chip, and liquid crystal display shows test results and the circuit of process of classifying.
Background technology
ASC8826 is a kind of charging, the two-in-one chip of boosting portable power source, adopts external power tube, and charging, boosting share inductance, and charging current can reach more than 2A, and boosting adopts synchronous rectification mode, and output load current can reach 3A, efficiency can reach more than 90%.The charge function of ASC8826 is opened automatically when there being 5V power supply to input, and pulls out power supply and then quits work.When 5V power supply inputs (being namely operated in charge mode), boost function is prohibited.Do not have 5V power supply to input, then can control boosting work by control EN pin, EN is high, and boosting exports 5V.ASC8826 adopts TSSSOP-16 encapsulation.In the process producing this charging management chip in enormous quantities, the value of the ISET pin voltage of chip, BAT pin voltage, SYS pin output voltage and quiescent current may be caused undesirable because of the reason of technique.These mistakes can directly cause chip cisco unity malfunction, become bad sheet, if even can burn the critical elements in control circuit in this integrated chip to circuit, cause much unnecessary loss.Tradition multimeter measuring method, can only detect a pin of a chip at every turn, can not detect multiple pins of multiple chip simultaneously, take time and effort, extremely inconvenient.
Summary of the invention
The utility model, for the deficiencies in the prior art, provides a kind of lithium cell charging and to boost two-in-one managing chip failure detector circuit.
The utility model comprises download program module, power module, AD acquisition module, single chip control module, chip installation testing module, reference voltage source module, LCD MODULE.
Described download program module adopts ISP interface to be directly connected with single chip control module, by the control of single chip control module; Power module is responsible for converting the input voltage of 12V to 5V and 3.7V, to single-chip microcomputer and the two-in-one chip power supply of charging pressure-boosting; AD acquisition module selects 12,11 tunnel AD conversion chip TLC2543, and namely chip installation testing module installs four aging seats on testing circuit, makes charging management chip ASC8826 installation testing and dismounting thereon.
Described single chip control module selects AT89S52, and this single-chip microcomputer has 32 input and output pins, meets design input and output pin quantity.
1 pin of described ISP download interface, 5 pin, 7 pin, 9 pin are connected with 6 pin of single-chip microcomputer, 9 pin, 8 pin, 7 pin respectively, and 2 pin of ISP download interface meet VCC, 4 pin, 6 pin, 8 pin, 10 pin ground connection.
Described power module adopts 12V to turn the step-down chip U1LM3485MM of 5V, and in addition, this power module is also responsible for 12V voltage transitions to become 3.7V to input boost function for lithium battery power supply.
Described AD acquisition module selects two piece of 12 bit resolution A/D converter TLC2543, and it has 11 analog input channels; Wherein every block A/D converter 16 pin, 17 pin, 18 pin, 19 pin are connected with 22 pin of AT89S52 single board computer, 23 pin, 24 pin, 25 pin respectively, 21 pin and 26 pin of single-chip microcomputer are connected 15 pin of every block A/D converter respectively, the Enable Pin of control A/D acquisition module conversion; In addition, 1 pin of first piece of A/D converter is connected to 4 pin with 4 pin of charging management chip ASC8826,5 to 8 pin of first piece of A/D converter are connected with 13 pin of charging management chip ASC8826,9 pin of first piece of A/D converter, 11 pin, 12 pin and 1 pin of U3 are connected with 8 pin of charging management chip ASC8826,2 pin of second piece of A/D converter are connected to 5 pin with 15 pin of charging management chip ASC8826, and these pins are used for providing input voltage and test b AT voltage, ISET voltage to charging management chip ASC8826 and exporting SYS voltage respectively.
Described LCD MODULE selects 12864 liquid crystal displays; The display module of this system selects 12864 liquid crystal displays; 1 pin of single-chip microcomputer, 2 pin, 3 pin, 4 pin are connected for controlling display screen with 4 pin of 12864 liquid crystal displays, 5 pin, 6 pin, 17 pin respectively, and in addition, 32 pin of single-chip microcomputer connect 12864 liquid crystal displays 7 pin to 39 pin are to the transmission of 4 pin for data.
Described reference voltage source module uses 5V high precision reference voltage source chip REF02 to provide 5V reference voltage for AD acquisition module, 2 pin of reference voltage source chip REF02 connect 12V power supply, 6 pin export the accurate voltage of 5V and are connected with 14 pin of every block A/D converter, guarantee AD acquisition module voltage stabilization.。
The beneficial effects of the utility model: the quality of energy disposable test 4 each pins of lithium cell charging managing chip ASC8826, and show test results with liquid crystal display.
Accompanying drawing explanation
Fig. 1 is the utility model lithium cell charging managing chip testing circuit general structure schematic diagram.
Fig. 2 is the utility model ISP download program module diagram.
Fig. 3 is the utility model power module schematic diagram.
Fig. 4 is the utility model reference voltage source module schematic diagram.
Fig. 5 is the utility model AD acquisition module schematic diagram.
Fig. 6 is the utility model single chip control module and LCD MODULE schematic diagram.
Fig. 7 is the utility model reset switch module diagram.
Fig. 8 is the utility model ASC8826 chip installation testing module diagram.
Fig. 9 is utility model works FB(flow block).
Embodiment
For better the technical solution of the utility model being described, be described in detail below in conjunction with the embodiment of accompanying drawing to utility model.
The present embodiment uses AT89S52, REF02, LCD12864, ASC8826, TLC2543.ASC8826 needs test signal (input current, battery temperature measuring ability, output voltage) to be connected to TLC2543, is input to AT89S52, shows test results after AT89S52 process on liquid crystal display 12864 after AD conversion.
Test data:
1. test I SET pin voltage: 1.25V ~ 1.35V;
2. test GND pin voltage: by 10 Europe resistance conversion quiescent current 0.5 ~ 2mA of series connection;
3. test SYS pin voltage: 5V ~ 5.5V;
4. test b AT pin voltage: add GND pin voltage correction (charge cutoff voltage=BAT pin voltage-to-ground-GND pin voltage-to-ground), according to last magnitude of voltage stepping;
5.A：4.08~4.15VB：4.15~4.23V；
As shown in Figure 1, the present embodiment comprises download program module, power module, AD acquisition module, single chip control module, chip installation testing module, reference voltage source module, LCD MODULE.Wherein, download program module adopts ISP interface to be directly connected with single-chip microcomputer, by the control of single-chip microcomputer; Power module is responsible for converting the input voltage of 12V to 5V and 3.7V, to single-chip microcomputer and the two-in-one chip power supply of charging pressure-boosting; AD acquisition module selects 12,11 tunnel AD conversion chip TLC2543, and can meet design requirement the precision and AD input channel quantitative requirement that reach.Furtherly, namely chip installation testing module installs four aging seats on test board, makes charging management chip can installation testing and dismounting thereon easily.
As shown in Figure 2,1 pin of the ISP download interface U5 of this system, 5 pin, 7 pin, 9 pin are connected with 6 pin of single-chip microcomputer, 9 pin, 8 pin, 7 pin respectively, and 2 pin of ISP meet VCC, 4 pin, 6 pin, 8 pin, 10 pin ground connection.
As shown in Figure 3, the microcontroller power supply module of this system adopts 12V to turn the step-down chip U1LM3485MM of 5V, and as Closing Switch SW_F_5, power light D1 is shinny, and chip is started working.In addition, the U11LM3485MM of this power module is also responsible for 12V voltage transitions to become 3.7V to input boost function for lithium battery power supply.
As shown in Figure 4 and Figure 5, AD acquisition module selects 12 bit resolution A/D converter TLC2543, and it has 11 analog input channels.Wherein 16 pin of TLC2543U2 with U3,17 pin, 18 pin, 19 pin are connected with 22 pin of AT89S52 single board computer, 23 pin, 24 pin, 25 pin respectively, and 21 pin and 26 pin of single-chip microcomputer are connected 15 pin of two TLC2543 respectively, the Enable Pin that control A/D changes.The design uses 5V high precision reference voltage source chip REF02 to provide 5V reference voltage for AD acquisition module, and 2 pin of REF02 connect 12V power supply, exports the accurate voltage of 5V and is connected with 14 pin of TLC2543, guarantee AD acquisition module voltage stabilization at 6 pin.In addition, 1 pin of U2 is connected to 4 pin with 4 pin of chip ASC8826,5 to 8 pin of U2 are connected with 13 pin of chip ASC8826,9 pin of U2,11 pin, 12 pin and 1 pin of U3 are connected with 8 pin of chip ASC8826,2 pin of U3 are connected to 5 pin with 15 pin of chip ASC8826, and these pins are used for providing input voltage and test b AT voltage, ISET voltage to ASC8826 and exporting SYS voltage respectively.
As shown in Figure 6, single chip control module selects AT89S52, and this single-chip microcomputer has 32 input and output pins, meets design input and output pin quantity.The display module of this system selects 12864 liquid crystal displays.1 pin of AT89S52,2 pin, 3 pin, 4 pin are connected for controlling display screen with 4 pin of U16,5 pin, 6 pin, 17 pin respectively, and in addition, 32 pin of single-chip microcomputer connect 12,864 7 pin to 39 pin are used for the transmission of data to 4 pin.
As shown in Figure 7,9 pin of single-chip microcomputer are connected with 8 pin of U6 with U17 respectively with 12 pin, for whole system reset and start test.16 pin of single-chip microcomputer, 17 pin, 27 pin, 28 pin, 10 pin, 11 pin, 14 pin, 15 pin are responsible for conducting and the shutoff of chip ASC8826 input voltage.Fig. 8 is embodiment chips installation testing module diagram.
The workflow of the present embodiment is see Fig. 9:
1. lay chip reset to power on
Press after correctly laying chip and trigger next Test Switchboard, now by singlechip control chip test module supply voltage, automatic power down after whole test job completes.
2. tested static electric current
The effective range of ASC8826 input current is 0.5 ~ 2mA, if be greater than 2mA, then and wafer damage.
3.BAT pin voltage, ISET pin voltage, SYS pin voltage tester
First allow Single-chip Controlling to chip 5V voltage, gather ISET pin voltage, BAT pin voltage, display screen display is presented at after AD conversion, break 5V voltage again, to BAT pin input 3.7V voltage, whether gather SYS pin output voltage in display screen display after AD conversion, status indicator lamp signal is input to single-chip microcomputer, then meet the requirements at display screen display status indicator lamp signal.
4. automatic power down, classification chip
After whole test job completes, singlechip control chip test module voltage, makes it invalid, chip testing modular power down, and LCD shows, according to display result classification chip.
5. put chip, start next test process
In the above-described embodiments; a kind of best mode of the utility model is described, obviously, under inventive concept of the present utility model; still can make a lot of changes and improvements, any change made under inventive concept of the present utility model all will fall in protection domain of the present utility model.
Claims (1)
1. a lithium cell charging boosts two-in-one managing chip failure detector circuit, comprise download program module, power module, AD acquisition module, single chip control module, chip installation testing module, reference voltage source module, LCD MODULE, it is characterized in that:
Described download program module adopts ISP interface to be directly connected with single chip control module, by the control of single chip control module; Power module is responsible for converting the input voltage of 12V to 5V and 3.7V, to single-chip microcomputer and the two-in-one chip power supply of charging pressure-boosting; AD acquisition module selects 12,11 tunnel AD conversion chip TLC2543, and namely chip installation testing module installs four aging seats on testing circuit, makes charging management chip ASC8826 installation testing and dismounting thereon;
Described single chip control module selects AT89S52, and this single-chip microcomputer has 32 input and output pins, meets design input and output pin quantity;
1 pin of described ISP download interface, 5 pin, 7 pin, 9 pin are connected with 6 pin of single-chip microcomputer, 9 pin, 8 pin, 7 pin respectively, and 2 pin of ISP download interface meet VCC, 4 pin, 6 pin, 8 pin, 10 pin ground connection;
Described power module adopts 12V to turn the step-down chip U1LM3485MM of 5V, and in addition, this power module is also responsible for 12V voltage transitions to become 3.7V to input boost function for lithium battery power supply;
Described AD acquisition module selects two piece of 12 bit resolution A/D converter TLC2543, and it has 11 analog input channels; Wherein every block A/D converter 16 pin, 17 pin, 18 pin, 19 pin are connected with 22 pin of AT89S52 single board computer, 23 pin, 24 pin, 25 pin respectively, 21 pin and 26 pin of single-chip microcomputer are connected 15 pin of every block A/D converter respectively, the Enable Pin of control A/D acquisition module conversion; In addition, 1 pin of first piece of A/D converter is connected to 4 pin with 4 pin of charging management chip ASC8826,5 to 8 pin of first piece of A/D converter are connected with 13 pin of charging management chip ASC8826,9 pin of first piece of A/D converter, 11 pin, 12 pin and 1 pin of U3 are connected with 8 pin of charging management chip ASC8826,2 pin of second piece of A/D converter are connected to 5 pin with 15 pin of charging management chip ASC8826, and these pins are used for providing input voltage and test b AT voltage, ISET voltage to charging management chip ASC8826 and exporting SYS voltage respectively;
Described LCD MODULE selects 12864 liquid crystal displays; 1 pin of single-chip microcomputer, 2 pin, 3 pin, 4 pin are connected for controlling display screen with 4 pin of 12864 liquid crystal displays, 5 pin, 6 pin, 17 pin respectively, and in addition, 32 pin of single-chip microcomputer connect 12864 liquid crystal displays 7 pin to 39 pin are to the transmission of 4 pin for data;
Described reference voltage source module uses 5V high precision reference voltage source chip REF02 to provide 5V reference voltage for AD acquisition module, 2 pin of reference voltage source chip REF02 connect 12V power supply, 6 pin export the accurate voltage of 5V and are connected with 14 pin of every block A/D converter, guarantee AD acquisition module voltage stabilization.
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| CN201520339990.1U CN204789905U (en) | 2015-05-24 | 2015-05-24 | Lithium batteries step up two unification management chip failure detector circuit |
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| CN201520339990.1U CN204789905U (en) | 2015-05-24 | 2015-05-24 | Lithium batteries step up two unification management chip failure detector circuit |
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| CN204789905U true CN204789905U (en) | 2015-11-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597257A (en) * | 2016-12-21 | 2017-04-26 | 安徽中兴继远信息技术股份有限公司 | Testing device for core board and testing method thereof |
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2015
- 2015-05-24 CN CN201520339990.1U patent/CN204789905U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597257A (en) * | 2016-12-21 | 2017-04-26 | 安徽中兴继远信息技术股份有限公司 | Testing device for core board and testing method thereof |
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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 |
Granted publication date: 20151118 Termination date: 20160524 |
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| CF01 | Termination of patent right due to non-payment of annual fee |