CN101162259A - Function testing device and method for small electric quantity extra battery - Google Patents
Function testing device and method for small electric quantity extra battery Download PDFInfo
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- CN101162259A CN101162259A CNA2006101409124A CN200610140912A CN101162259A CN 101162259 A CN101162259 A CN 101162259A CN A2006101409124 A CNA2006101409124 A CN A2006101409124A CN 200610140912 A CN200610140912 A CN 200610140912A CN 101162259 A CN101162259 A CN 101162259A
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Abstract
The invention discloses a device for testing the function of a small capacity spare battery and the method thereof, wherein the device comprises a spare battery unit 101, a volatile memory unit 102, a micro processing unit 103 and a measurement unit 104, wherein the spare battery unit 101 and the volatile memory unit are connected through an interface of the spare battery unit; when a main power supply is out of work or has power down, the volatile memory unit 102 shifts automatically to the spare battery unit to be supplied with power; the volatile memory unit 102 has the function of storing data, or can provides instant messaging; the micro processing unit 103 is used for reading the voltage measurement information of the spare battery of the measurement unit 104 and the data information of the volatile memory unit 102, judges if the spare battery operates normally and reports the result; the measurement unit is used to shirt the voltage of the spare battery and performs measurement. The invention judges the working state of the spare battery according to the voltage signals of the spare battery and determines simply and effectively the consumption of the battery according to the voltage.
Description
Technical field
The present invention relates to the single-plate grade automatic test field of communication system, personal electric instrument, specifically, is proving installation and the method to a kind of duty of the small-sized reserve battery in electronic equipment and the personal electric product.
Proving installation of the present invention and method are applicable to the application of the application of small hand-held formula equipment, system single board low pressure volatile memory preservation configuration data or real-time clock and the electronic product aspect that the low pressure volatile memory is used.
Background technology
In communication electronic equipment and personal electric product, a lot of product needed use the reserve battery power supply.Electronic products such as general communication class master control veneer, PC mainboard, individual palm appliance and electronic mostly use reserve battery to provide the low pressure volatile memory to preserve certain configuration information or the real-time clock standby power supply are provided.For this type of product, be to be chip power supply for a long time to the requirement of standby battery.
The button cell and real-time timepiece chip or the low pressure storage chip that often use in for example general product, working current be at microampere order, and button cell can continued power more than 2 years.Battery is a consumables, the use of battery also has certain life-span, be subject to the influence that external temperature, humidity, pressure etc. change, all may cause the variation of battery performance in each links such as processing, keeping and uses, so the performance of battery is directly connected to the quality of product.In case reserve battery lost efficacy, serious consequence such as will cause under the power-down conditions that system time mistake, configuration information are lost.In the veneer process, button cell lost efficacy or loose contact, was that a failure rate is than higher fault, so the test of reserve battery is very important.
In the Huashuo Computer Co Ltd of Chinese patent application CN02124333 " notebook computer power supply automatic detecting method ", what introduce is a kind of notebook computer power supply automatic detecting method, it is design one test procedure in the system that detects notebook computer power supply, and cooperation testing appliance, Electronic Negative carrier aircraft and multi-usage ammeter etc., whether the power supply motherboard that reaches prior precognition notebook is unusual, to carry out time of entity test long to form system mode to improve the past, machine plate part is easy to the disappearance that short circuit is burnt, and then can reduce the test duration, increase acceptance rate, improve product production capacity and quality.
For patented claim CN02124333, it is the battery electric quantity metering system of software and hardware combining, mainly is to carry out electric weight according to the voltage and current time of battery to calculate, then the estimating battery electric weight.This mode is proper for being similar to the bigger battery testing of electric weight such as Notebook Battery, but will cause loss ratio bigger for the small-capacity cells test that resembles button cell, will have a strong impact on battery life.And need the voltage and current of the real-time monitoring battery of software, and add up, consumed power is bigger.
Summary of the invention
In order to overcome problems of the prior art, the present invention proposes apparatus and method that the duty of standby power supply, particularly small-capacity cells (for example button cell etc.) is tested, and this kind proving installation and method are particularly suitable for the single-plate grade automatic test course.
The present invention specifically is achieved in that
A kind of device for testing functions that is used for small electric quantity extra battery comprises,
Described standby power unit is small-sized battery, can be the lithium coin cells of button cell or the cycle charging of 3V/50mAH.
Described volatile memory cell can be to have RAM or the real-time clock that low-voltage is preserved data.
Described real-time timepiece chip periphery also needs low frequency crystal oscillator and the crystal oscillator electric capacity of 32.768KHz;
The described real-time timepiece chip IIC interface of two lines or the three-way SPI interfaces of adopting more.
Described measuring unit comprises voltage follower and the A/D converter that amplifier constitutes,
Described voltage follower is got backup battery voltage, and microprocessor unit 103 is sent in conversion through A/D.
Described measuring unit comprises MOSFET type voltage comparator and two divider resistances;
Described MOSFET type voltage comparator is sent into microprocessor unit to the voltage signal that obtains.
A kind of function test method that is used for small electric quantity extra battery comprises the steps:
First step reads the voltage of standby power supply;
Second step and default magnitude of voltage compare;
Third step, microprocessor unit are judged whether operate as normal of standby power supply, and the report comparative result.
Described first step,
Press signal from the standby power supply power taking, import in the voltage follower of amplifier formation, read magnitude of voltage through A/D converter then.
Described first step,
The voltage signal of standby power supply directly imports voltage comparator, and output voltage values compares then.
Device of the present invention, owing to get the voltage signal of reserve battery, current sinking is very little, does not influence serviceable life substantially.Not by the accumulation calculating battery consumption, but judge the state of reserve battery according to the voltage signal of battery.For the battery of little current drain, owing to there is not the impact fluctuation of big current drain, cell voltage can reflect the size of electric weight substantially, so judge that by voltage battery consumption is a kind of rule of thumb.
Description of drawings
Fig. 1 is the realization block diagram of contrive equipment;
Fig. 2 is the physical circuit of quantitative test standby power supply;
Fig. 3 is the physical circuit of voltage compare test standby power supply;
Fig. 4 is concrete test flow chart.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in detail, specific design is example with the real-time clock.
The block diagram of device of the present invention comprises as shown in Figure 1, standby power unit 101, volatile memory cell 102, microprocessor unit 103, measuring unit 104.
Standby power unit 101: mainly be the battery of some low capacities, the button cell of for example general 3V/50mAH or lithium coin cells that can cycle charging.For this class chip of real-time clock, the button cell that 3V electric weight is 25mAH generally can continued power 2 years to 3.5 years.Lithium battery can cycle charging, and it is more permanent to work.In physical circuit, connect the standby power supply interface of Unit 102.
Volatile memory cell unit 102 can have low-voltage and preserve chips such as the RAM of data or real-time clock.This example just is example with the real-time clock.The real-time timepiece chip periphery also needs low frequency crystal oscillator and the crystal oscillator electric capacity of 32.768KHz.For example the supply voltage of M41T11 real-time clock is 2.5V-5.5V, and electric current can reach 70-300uA during operate as normal, and under the situation of reserve battery power supply, working current has only about 0.8uA.M41T11 real-time clock inside comprises the SRAM of 64bit * 8, and preceding 8 is the real-time time record cell, and 9-64 is the user storage data unit, can preserve some significant datas.
General real-time clock adopts the IIC interface of two lines or three-way SPI interface mostly in order to reduce volume.The supply voltage of general real-time timepiece chip can be divided into polytypes such as 1.8V, 3.3V and 5V according to the difference of model.102 all have with Unit 103 and to be connected with 101 in physical circuit, and 101 for it provides standby power supply, and 103 and its interaction data information.
Measuring unit 104: mainly assist Unit 103 to finish the voltage transitions and the surveying work of reserve battery.The test of backup battery voltage.Specific design device, particularly amplifier require preferably MOSFET amplifier because its bias current has only 4pA-30pA, only be chip current sinking 0.8uA (is example with the real-time clock) 30,000/or still less, do not influence the standby power supply life-span substantially).104 specific implementation circuit mainly contains two kinds of situations, but is not limited to both of these case.
Two kinds of test modes are arranged at present, and specifically face is described as follows:
First kind of mode is quantitative measurement, and be main by pressing signal from the standby power supply power taking, imports in the voltage follower of amplifier formation, reads magnitude of voltage through A/D converter then, carries out quantitative judgement.
The second way is to measure qualitatively, by the voltage signal of standby power supply is imported in the voltage comparator, direct and predetermined voltage compares qualitatively, confirm that cell voltage is whether not enough or lost efficacy, this mode can be predicted battery near serviceable life, but does not have first method accurate.
Concrete testing process is referring to accompanying drawing 4.
First kind of mode needs amplifier and A/D converter, but test battery voltage is very accurate, and duty that can the real-time follow-up battery is applied in the relatively stricter product of battery request; The second way needs a voltage comparator and two divider resistances to get final product, and has saved A/D converter, and cell voltage and fixed voltage compare, can be with regard to the prompting changing battery before battery thoroughly lost efficacy, and prompting in advance avoids losing significant data.
First kind of mode utilizes the MOFET amplifier to get backup battery voltage, and Unit 103 are sent in conversion through A/D, and circuit as shown in Figure 2.U2 is AD8541, and it is a MOSFET type amplifier, and operating voltage is 2.7V-5.5V, and input current only needs 4pA.U2 constitutes voltage follower, backup battery voltage is taken out send among the A/D converter U3.U3 is a DELTA-SIGMA type A/D converter, and interface is a serial i IC interface, and the control of inner band automatic gain can be amplified 1,2,4 and 8 times to input signal respectively, 16 precision.Can certainly use the A/D converter of other model.Microprocessor compares by the value that the IIC interface reads A/D transformation result and program setting, judges whether battery lost efficacy or is about to inefficacy.
The second way is utilized the MOFET voltage comparator, and the high-low level signal is input to Unit 103, and circuit as shown in Figure 3.In this circuit, voltage comparison unit has directly used the AD8541 amplifier, and texture ratio Fig. 2 is simple.In this circuit, resistance R 5 and R6 constitute bleeder circuit, at 4 pin of U2 the voltage that pre-sets are arranged.3 pin and the 4 pin predeterminated voltages of backup battery voltage input U2 compare, if being higher than predeterminated voltage, backup battery voltage just thinks that work is good, lost efficacy otherwise just thinking has lost efficacy or be about to, output signal was imported through microprocessor IO pin, microprocessor judges and report were arranged.
Claims (9)
1. a device for testing functions that is used for small electric quantity extra battery is characterized in that, comprise,
Standby power unit (101), volatile memory cell (102), microprocessor unit (103), measuring unit (104);
Standby power unit (101) is connected by the standby power supply interface with volatile memory cell (102), and under the situation of primary power cource fault or power down, volatile memory cell (102) automatically switches to standby power supply (101) and powers;
Volatile memory cell (102) provides the long preservation function or the clocking information of data, carries out information interaction by parallel interface or serial line interface and microprocessor unit (103);
Microprocessor unit (103) is used to read the backup battery voltage metrical information of measuring unit (104) and the data message of volatile memory cell (102), and judges that whether standby power supply is working properly, reports the result then;
Measuring unit (104) is finished the voltage transitions and the surveying work of standby power supply.
2. the device for testing functions that is used for small electric quantity extra battery as claimed in claim 1 is characterized in that:
Described standby power unit is small-sized battery, can be the lithium coin cells of button cell or the cycle charging of 3V/50mAH.
3. the device for testing functions that is used for small electric quantity extra battery as claimed in claim 1 is characterized in that:
Described volatile memory cell can be to have RAM or the real-time clock that low-voltage is preserved data.
4. the device for testing functions that is used for small electric quantity extra battery as claimed in claim 3 is characterized in that:
Described real-time timepiece chip periphery also needs low frequency crystal oscillator and the crystal oscillator electric capacity of 32.768KHz;
The described real-time timepiece chip IIC interface of two lines or the three-way SPI interfaces of adopting more.
5. the device for testing functions that is used for small electric quantity extra battery as claimed in claim 1 is characterized in that:
Described measuring unit comprises voltage follower and the A/D converter that amplifier constitutes,
Described voltage follower is got backup battery voltage, and microprocessor unit (103) is sent in conversion through A/D.
6. the device for testing functions that is used for small electric quantity extra battery as claimed in claim 1 is characterized in that:
Described measuring unit comprises MOSFET type voltage comparator and two divider resistances;
Described MOSFET type voltage comparator is sent into microprocessor unit to the voltage signal that obtains.
7. a function test method that is used for small electric quantity extra battery is characterized in that, comprises the steps:
First step reads the voltage of standby power supply;
Second step and default magnitude of voltage compare;
Third step, microprocessor unit are judged whether operate as normal of standby power supply, and the report comparative result.
8. the function test method that is used for small electric quantity extra battery as claimed in claim 7 is characterized in that:
Described first step,
Press signal from the standby power supply power taking, import in the voltage follower of amplifier formation, read magnitude of voltage through A/D converter then.
9. the function test method that is used for small electric quantity extra battery as claimed in claim 7 is characterized in that:
Described first step,
The voltage signal of Back Up Source directly imports voltage comparator, and output voltage values compares then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNA2006101409124A CN101162259A (en) | 2006-10-12 | 2006-10-12 | Function testing device and method for small electric quantity extra battery |
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| CNA2006101409124A CN101162259A (en) | 2006-10-12 | 2006-10-12 | Function testing device and method for small electric quantity extra battery |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103064033A (en) * | 2011-10-19 | 2013-04-24 | 鸿富锦精密工业（深圳）有限公司 | Power supply test circuit |
| CN103177131A (en) * | 2011-12-21 | 2013-06-26 | 北京普源精电科技有限公司 | Data acquisition device and data acquisition card with power outage self protective function |
| CN104252163A (en) * | 2013-06-28 | 2014-12-31 | 罗斯蒙特公司 | Logic capable power module |
| CN106293796A (en) * | 2015-06-10 | 2017-01-04 | 联想(北京)有限公司 | A kind of information processing method and electronic equipment |
| CN107422175A (en) * | 2017-08-25 | 2017-12-01 | 中国电力科学研究院 | A kind of method and system for judging that power information acquisition system clock is abnormal |
| CN107515376A (en) * | 2017-08-30 | 2017-12-26 | 郑州云海信息技术有限公司 | A kind of method of testing and device of battery back unit |
| CN107591185A (en) * | 2017-09-14 | 2018-01-16 | 郑州云海信息技术有限公司 | The method of testing and system of BBU compatibility are detected under a kind of MCS systems |
| CN108427050A (en) * | 2018-03-13 | 2018-08-21 | 广东美的制冷设备有限公司 | Method for diagnosing faults, the device of power factor corrector for air conditioner |
| CN109065086A (en) * | 2018-09-07 | 2018-12-21 | 郑州云海信息技术有限公司 | A kind of test macro storing power failure protection of equipment circuit |
| CN109375032A (en) * | 2018-09-15 | 2019-02-22 | 宁波高云电气有限公司 | A kind of management system of high-power high-capacity capacitor |
| CN109444752A (en) * | 2018-11-01 | 2019-03-08 | 郑州云海信息技术有限公司 | A kind of RTC cell voltage test method, device and server |
| CN112217273A (en) * | 2019-12-30 | 2021-01-12 | 蜂巢能源科技有限公司 | Monitoring method and monitoring device for battery management system |
-
2006
- 2006-10-12 CN CNA2006101409124A patent/CN101162259A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103064033A (en) * | 2011-10-19 | 2013-04-24 | 鸿富锦精密工业（深圳）有限公司 | Power supply test circuit |
| CN103177131A (en) * | 2011-12-21 | 2013-06-26 | 北京普源精电科技有限公司 | Data acquisition device and data acquisition card with power outage self protective function |
| CN103177131B (en) * | 2011-12-21 | 2017-03-29 | 北京普源精电科技有限公司 | Data acquisition unit with automatic cut-off protection protective function and data collecting card |
| CN104252163A (en) * | 2013-06-28 | 2014-12-31 | 罗斯蒙特公司 | Logic capable power module |
| CN104252163B (en) * | 2013-06-28 | 2020-07-10 | 罗斯蒙特公司 | Power module with logic capability |
| CN106293796B (en) * | 2015-06-10 | 2019-11-26 | 联想(北京)有限公司 | A kind of information processing method and electronic equipment |
| CN106293796A (en) * | 2015-06-10 | 2017-01-04 | 联想(北京)有限公司 | A kind of information processing method and electronic equipment |
| CN107422175A (en) * | 2017-08-25 | 2017-12-01 | 中国电力科学研究院 | A kind of method and system for judging that power information acquisition system clock is abnormal |
| CN107515376A (en) * | 2017-08-30 | 2017-12-26 | 郑州云海信息技术有限公司 | A kind of method of testing and device of battery back unit |
| CN107591185A (en) * | 2017-09-14 | 2018-01-16 | 郑州云海信息技术有限公司 | The method of testing and system of BBU compatibility are detected under a kind of MCS systems |
| CN108427050A (en) * | 2018-03-13 | 2018-08-21 | 广东美的制冷设备有限公司 | Method for diagnosing faults, the device of power factor corrector for air conditioner |
| CN109065086A (en) * | 2018-09-07 | 2018-12-21 | 郑州云海信息技术有限公司 | A kind of test macro storing power failure protection of equipment circuit |
| CN109375032A (en) * | 2018-09-15 | 2019-02-22 | 宁波高云电气有限公司 | A kind of management system of high-power high-capacity capacitor |
| CN109444752A (en) * | 2018-11-01 | 2019-03-08 | 郑州云海信息技术有限公司 | A kind of RTC cell voltage test method, device and server |
| CN112217273A (en) * | 2019-12-30 | 2021-01-12 | 蜂巢能源科技有限公司 | Monitoring method and monitoring device for battery management system |
| CN112217273B (en) * | 2019-12-30 | 2022-04-08 | 蜂巢能源科技有限公司 | Monitoring method and monitoring device for battery management system |
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Open date: 20080416 |