CN104749526A - Method for detecting critical failure of battery - Google Patents
Method for detecting critical failure of battery Download PDFInfo
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- CN104749526A CN104749526A CN201410219467.5A CN201410219467A CN104749526A CN 104749526 A CN104749526 A CN 104749526A CN 201410219467 A CN201410219467 A CN 201410219467A CN 104749526 A CN104749526 A CN 104749526A
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000001514 detection method Methods 0.000 claims abstract description 32
- 208000032953 Device battery issue Diseases 0.000 claims description 31
- 238000007599 discharging Methods 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
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Abstract
The invention discloses a method for detecting critical failure of a battery. The method is that the critical failure condition of an UPS battery is determined by analyzing the time from inverting discharging to reach the voltage critical determining value of the UPS battery. The method is simple to perform; the detection cost can be effectively reduced; in addition, the failure condition of the UPS battery can be accurately detected; an LED of the UPS can be used for reminding, thus a user can timely conveniently know the failure condition of the UPS battery, and as a result, the accident caused by the failure of the UPS battery can be greatly reduced. The method can be widely applied to the field of detection of batteries.
Description
Technical field
The present invention relates to UPS battery administrative skill, particularly relate to a kind of method of critical battery failure detection.
Background technology
Ups power as the important peripheral hardware of computer information system, communication system, Data LAN Management Centre etc., protection calculation machine data, ensure line voltage and frequency the harm of stablizing, improve power grid quality, preventing instantaneous power-off and forced outage from causing user etc. in be very important.Battery is as one of indispensable pillar of UPS, and its quality directly affects the running quality of UPS.If battery failure is undiscovered again, UPS will be made normally not run or to shut down, finally may cause catastrophic consequence.
Be directed to the administrative skill comparative maturity extending the UPS battery life-span although existing, because cost is higher, be generally only applied in the management of large-capacity ups battery, and be used in the less of the UPS battery of middle low power.
Summary of the invention
In order to solve the problems of the technologies described above, the object of this invention is to provide a kind of cost lower, and accurately can detect the method for a kind of critical battery failure detection of UPS battery borderline failure.
The technical solution adopted in the present invention is:
A method for critical battery failure detection, comprises the following steps:
A, UPS battery is switched to battery mode, give initial value to count value, and judge whether cell voltage is in full charge state, if so, then perform step B; Otherwise, exit battery detecting;
B, discharge current to be sampled, and judge discharge current whether within the scope of the inversion discharge current of regulation, if so, then perform step C; Otherwise, exit battery detecting;
The time counting value that C, calculating current flow multiplying power are corresponding, and allow current count value reduce the time counting value of a unit;
D, judge whether count value is 0, if so, then performs step e; Otherwise execution step F;
E, judge whether cell voltage is greater than default voltage critical judgment value, if so, then critical battery zone bit is set to 0; Otherwise, critical battery zone bit is set to 1;
F, judge whether cell voltage is greater than default voltage critical judgment value, if so, then return after the setting-up time of interval and perform step B; Otherwise, critical battery zone bit is set to 1.
As the further improvements in methods of described a kind of critical battery failure detection, described step C comprises:
C1, read current current ratio, according to current ratio, inquiry obtains battery is discharged to voltage critical judgment value discharge time from full charge state;
C2, according to discharge time, calculate the marginal time;
C3, according to the marginal time, by the initial value of count value divided by the marginal time, obtain corresponding time counting value;
C4, time counting value according to correspondence, reduce the time counting value of a unit by real-time count value.
As the further improvements in methods of described a kind of critical battery failure detection, also comprise: critical battery zone bit is saved in flash memory.
As the further improvements in methods of described a kind of critical battery failure detection, also comprise: from flash memory, read critical battery zone bit, judge whether it is 1, if so, then control UPS battery LED and carry out flickering display; Otherwise UPS battery LED maintains normal display.
As the further improvements in methods of described a kind of critical battery failure detection, the initial value in described steps A is OxFFFF.
As the further improvements in methods of described a kind of critical battery failure detection, described default voltage critical judgment value is 11V.
As the further improvements in methods of described a kind of critical battery failure detection, the setting-up time in described step F is 1s.
The invention has the beneficial effects as follows:
The method of a kind of critical battery failure detection of the present invention is discharged to voltage critical judgment value time by analyzing UPS battery inversion judges the borderline failure situation of UPS battery.The present invention carries out simply, effectively can reduce testing cost, and accurately can detect the failure conditions of UPS battery, and be reminded by the LED etc. of UPS battery, person easy to use knows the failure conditions of UPS battery in time, greatly reduces the accident because UPS battery inefficacy produces.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further:
Fig. 1 is the flow chart of steps of the method for a kind of critical battery failure detection of the present invention;
Fig. 2 is the state-of-charge of UPS battery and the graph of a relation of voltage in the method for a kind of critical battery failure detection of the present invention;
Fig. 3 is voltage and the graph of a relation of time under UPS battery different multiplying electric current in the method for a kind of critical battery failure detection of the present invention;
Fig. 4 is the state-of-charge of UPS battery and the graph of a relation of voltage in the method for a kind of critical battery failure detection of the present invention;
Fig. 5 is voltage and the graph of a relation of time under UPS battery different multiplying electric current in the method for a kind of critical battery failure detection of the present invention.
Embodiment
With reference to figure 1, the method for a kind of critical battery failure detection of the present invention, comprises the following steps:
A, UPS battery is switched to battery mode, give initial value to count value, and judge whether cell voltage is in full charge state, if so, then perform step B; Otherwise, exit battery detecting;
B, discharge current to be sampled, and judge discharge current whether within the scope of the inversion discharge current of regulation, if so, then perform step C; Otherwise, exit battery detecting;
The time counting value that C, calculating current flow multiplying power are corresponding, and allow current count value reduce the time counting value of a unit;
D, judge whether count value is 0, if so, then performs step e; Otherwise execution step F;
E, judge whether cell voltage is greater than default voltage critical judgment value, if so, then critical battery zone bit is set to 0; Otherwise, critical battery zone bit is set to 1;
F, judge whether cell voltage is greater than default voltage critical judgment value, if so, then return after the setting-up time of interval and perform step B; Otherwise, critical battery zone bit is set to 1.
With reference to figure 2, as the further improvements in methods of described a kind of critical battery failure detection, described step C comprises:
C1, read current current ratio, according to current ratio, inquiry obtains battery is discharged to voltage critical judgment value discharge time from full charge state;
C2, according to discharge time, calculate the marginal time;
C3, according to the marginal time, by the initial value of count value divided by the marginal time, obtain corresponding time counting value;
C4, time counting value according to correspondence, reduce the time counting value of a unit by real-time count value.
As shown in Figure 3, UPS mainly operates in one of four states to the structure of UPS, holding state, city's electricity condition, battery inverter mode and off-mode.At holding state or city's electricity condition, civil power can be charged to battery by charger, and is in inverter mode, then UPS by inverter to battery discharge.
As shown in Figure 4, the state-of-charge of battery and voltage relationship are linear relationships, for the battery of a standard 12V, if with voltage when carrying more than 13V, then can think that this battery has been in full charge state.
As the further improvements in methods of described a kind of critical battery failure detection, also comprise: critical battery zone bit is saved in flash memory.
As the further improvements in methods of described a kind of critical battery failure detection, also comprise: from flash memory, read critical battery zone bit, judge whether it is 1, if so, then control UPS battery LED and carry out flickering display; Otherwise UPS battery LED maintains normal display.
As the further improvements in methods of described a kind of critical battery failure detection, the initial value in described steps A is OxFFFF.
As the further improvements in methods of described a kind of critical battery failure detection, described default voltage critical judgment value is 11V.The rated capacity C of UPS battery, unit ampere-hour Ah, it be discharge current peace A and discharge time hour h product.Battery strength of current is at work commonly used multiplying power to represent, writes and is NCh.If rated capacity is 7AH battery, if with the electric discharge of 2C strength of current, then discharge current equals 2 × 7=14A.When the final voltage of UPS battery refers to electric discharge, cell voltage drops to the minimum angle value being unlikely to cause damage.Under the electric current of different multiplying, the curved line relation of voltage and time as shown in Figure 2.Can find out, in battery allowed band, discharge current is larger, and final voltage is lower, but battery capacity but diminishes on the contrary.In order to comprehensively obtain the capacity of battery, wish that the cell discharge voltage value set is more low better, but the uninterrupted output considering UPS and the damage avoiding battery, wish again the height that the magnitude of voltage set is tried one's best.Again in conjunction with the range of current size of the occasion of UPS utilization, therefore the critical judgment value of setting voltage is 11V.
As the further improvements in methods of described a kind of critical battery failure detection, the setting-up time in described step F is 1s.
With reference to figure 5, according to the relation of battery discharge current and capacity, can by will in advance its data be stored, the time value that UPS battery discharges into voltage critical judgment value under different current ratio can be read by real-time query.The setting marginal time is 60% of query time.In order to the better digital quantization time, the initial value of regulation counting is 0xFFFF, the numerical value of stipulated time count value for deducting in the corresponding marginal time 1s of each electric current.Suppose that current ratio is 1C, battery from full charge discharge to the standard time of 11V be 25 minutes, can inquire about and draw from data store.Show that the marginal time is 25 × 60%=15Min again, namely 900s.The initial value T=0xFFFF of count value just needs the 900s time to reduce to 0.When defined, every one second subtrahend once, the deducted time so per second is exactly T/900=65535/900=73 to counter.By that analogy, from 0.3C to 4C, make every 0.1C and deduct corresponding time counting value.
More than that better enforcement of the present invention is illustrated, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement under the prerequisite without prejudice to spirit of the present invention, and these equivalent distortion or replacement are all included in the application's claim limited range.
Claims (7)
1. a method for critical battery failure detection, is characterized in that: comprise the following steps:
A, UPS battery is switched to battery mode, give initial value to count value, and judge whether cell voltage is in full charge state, if so, then perform step B; Otherwise, exit battery detecting;
B, discharge current to be sampled, and judge discharge current whether within the scope of the inversion discharge current of regulation, if so, then perform step C; Otherwise, exit battery detecting;
The time counting value that C, calculating current flow multiplying power are corresponding, and allow current count value reduce the time counting value of a unit;
D, judge whether count value is 0, if so, then performs step e; Otherwise execution step F;
E, judge whether cell voltage is greater than default voltage critical judgment value, if so, then critical battery zone bit is set to 0; Otherwise, critical battery zone bit is set to 1;
F, judge whether cell voltage is greater than default voltage critical judgment value, if so, then return after the setting-up time of interval and perform step B; Otherwise, critical battery zone bit is set to 1.
2. the method for a kind of critical battery failure detection according to claim 1, is characterized in that: described step C comprises:
C1, read current current ratio, according to current ratio, inquiry obtains battery is discharged to voltage critical judgment value discharge time from full charge state;
C2, according to discharge time, calculate the marginal time;
C3, according to the marginal time, by the initial value of count value divided by the marginal time, obtain corresponding time counting value;
C4, time counting value according to correspondence, reduce the time counting value of a unit by real-time count value.
3. the method for a kind of critical battery failure detection according to claim 1, is characterized in that: also comprise: be saved in flash memory by critical battery zone bit.
4. the method for a kind of critical battery failure detection according to claim 3, is characterized in that: also comprise: from flash memory, read critical battery zone bit, judges whether it is 1, if so, then controls UPS battery LED and carries out flickering display; Otherwise UPS battery LED maintains normal display.
5. the method for a kind of critical battery failure detection according to claim 1, is characterized in that: the initial value in described steps A is OxFFFF.
6. the method for a kind of critical battery failure detection according to claim 1, is characterized in that: described default voltage critical judgment value is 11V.
7. the method for a kind of critical battery failure detection according to claim 1, is characterized in that: the setting-up time in described step F is 1s.
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| CN201410219467.5A CN104749526B (en) | 2014-05-22 | 2014-05-22 | A kind of method of critical battery failure detection |
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Cited By (2)
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| CN107658921A (en) * | 2017-09-08 | 2018-02-02 | 成都瓦力特新能源技术有限公司 | Communication base station fixed sources of energy management system and its management method |
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| CN104749526B (en) | 2017-11-28 |
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Application publication date: 20150701 Assignee: Foshan Huabao Power Equipment Co., Ltd. Assignor: Sunshine & Cell Power System Equipment Co. Ltd. Contract record no.: 2019440000028 Denomination of invention: Method for detecting critical failure of battery Granted publication date: 20171128 License type: Exclusive License Record date: 20190130 |
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Effective date of registration: 20210512 Address after: 528000 floor 1-5, block 6, 115 Zhangcha 1st Road, Chancheng District, Foshan City, Guangdong Province Patentee after: Foshan Huabao Power Equipment Co.,Ltd. Address before: 528000 Guangdong province Foshan city Chancheng District Zhangcha Industrial Park West 3 Lang Foxi knitting Road 8 3 floor Patentee before: SUNSHINE & CELL POWER SYSTEM EQUIPMENT Co.,Ltd. |
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