CN104977536B - The method and device of working condition between a kind of detection accumulator group - Google Patents
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000001514 detection method Methods 0.000 title abstract description 5
- 238000007599 discharging Methods 0.000 claims description 48
- 238000012423 maintenance Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 4
- 238000007667 floating Methods 0.000 description 4
- 238000010248 power generation Methods 0.000 description 3
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- 238000012544 monitoring process Methods 0.000 description 2
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Abstract
The invention discloses a kind of method of working condition between detection accumulator group, voltage and current when two group storage batteries of acquisition discharge；Working condition between the two group storage batteries group is determined according to the voltage and current of acquisition and default Rule of judgment.The present invention further simultaneously discloses a kind of device of working condition between detection accumulator group.
Description
Technical Field
The invention relates to a power supply technology of a base station in the communication field, in particular to a method and a device for detecting the working state between storage battery packs.
Background
At present, in order to ensure the stable operation of a base station, two groups of storage batteries are generally adopted as emergency power supplies for many base stations. When the mains supply is normally powered, the two groups of storage batteries are in a floating charging state, namely, the mains supply provides floating charging current for the storage batteries to make up for loss generated by local action of the storage battery pack, and the storage batteries do not supply power to the base station equipment; when the mains supply fails, the two groups of storage batteries supply power to the base station equipment in an emergency mode so as to guarantee normal operation of the base station equipment.
Under normal conditions, when two groups of storage batteries supply power to equipment, the current values output by each group of storage batteries are almost equal, and only small floating exists. When the voltage of the storage battery is reduced to a preset threshold value, if the mains supply does not recover the power supply, the storage battery does not supply power to the equipment any more in order to guarantee the performance of the storage battery, and the power is converted into the power generation of the artificial oil engine until the mains supply recovers the normal power supply.
However, the working environment of the storage battery pack in the base station is unreliable, especially in peak-off power failure, the regularity is not provided, the time and duration of power failure are very random, the power failure is frequent, and even the power failure is more than three times a day. When the mains supply is powered off and the storage batteries supply power to the equipment, the situation that one group of storage batteries cannot normally supply power to the equipment may occur, and in the situation, the output current of the group of storage batteries is smaller or almost no current is generated relative to the output current of the other group of storage batteries; and only another group of normal storage batteries continues to provide stable current for the equipment; thus, imbalance between the battery groups is caused. When the storage battery packs are unbalanced, the storage batteries which normally supply power can greatly reduce the normal discharge time due to heavier load, so that the storage batteries supply power and send faults, the power generation times of the oil engine are increased, and the maintenance cost is greatly increased.
The existing method for judging the unbalance between the storage battery packs comprises the following steps: firstly, manual inspection is carried out, a maintainer uses a discharge instrument or other measuring tools to measure data such as voltage, current and the like of a battery, and the performance condition of the storage battery is judged according to the previous data and experience; then, the measuring instrument is used for detecting the internal resistance of the storage battery, judging the working state of the storage battery and further determining whether the storage battery groups are balanced.
Obviously, the detection of the working state of the existing storage battery needs manual inspection by maintenance personnel, and the data is measured one by one and then judged. However, the number of the storage batteries of the base station is large, the battery performance is easily influenced by the surrounding environment, and the manual operation difference is large, so that the problem of inaccurate monitoring result is caused; therefore, huge maintenance cost can be generated, large manpower and material resources are consumed, the condition monitoring of the storage battery in real time is lacked, and the number of times of power generation of the oil engine is increased.
Disclosure of Invention
In view of this, embodiments of the present invention are intended to provide a method and an apparatus for detecting an operating state between battery packs, which can detect the operating state between the battery packs in real time.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the embodiment of the invention provides a method for detecting the working state between storage battery packs, which comprises the following steps:
collecting voltage and current of two groups of storage batteries during discharging;
and determining the working state of the two groups of storage battery packs according to the collected voltage and current and preset judgment conditions.
In the above scheme, the method further comprises: and when the working state between the two groups of storage battery packs is determined to be discharge imbalance or one group of storage batteries does not work, sending alarm information.
In the above scheme, the determining the working state between the two groups of storage battery packs according to the collected voltage and current and the preset judgment condition includes: and when the absolute value of the difference between the current values of the two groups of storage batteries during discharging is greater than or equal to the preset percentage of the total current value of the load, determining that the working states of the two groups of storage batteries are discharging imbalance.
In the above scheme, the determining the working state between the two groups of storage battery packs according to the collected voltage and current and the preset judgment condition includes: and when the current value of one group of storage batteries during discharging is 0, the current value of the other group of storage batteries during discharging is smaller than-1, and the absolute value of the sum of the current value of the other group of storage batteries during discharging and the total current value of the load is smaller than 1, determining that the working states of the two groups of storage batteries are that one group of storage batteries does not work.
In the above scheme, the determining the working state between the two groups of storage battery packs according to the collected voltage and current and the preset judgment condition includes: when one group of storage batteries is discharged, the current value is 0, the current value of the other group of storage batteries is less than-1, and the absolute value of the sum of the current value of the other group of storage batteries and the total current value of the load is less than 1; and further determining that the working states of the two groups of storage batteries are that one group of storage batteries do not work when the voltages of the two groups of storage batteries during discharging meet the proportional threshold of the voltage dip amplitude.
The embodiment of the invention also provides a device for detecting the working state between the storage battery packs, which comprises: the device comprises an acquisition module and a determination module; wherein,
the acquisition module is used for acquiring voltage and current of the two groups of storage batteries during discharging;
and the determining module is used for determining the working state between the two groups of storage battery packs according to the acquired voltage and current and a preset judging condition.
In the above scheme, the determining module is further configured to send an alarm message when it is determined that the working state between the two groups of storage battery packs is discharging imbalance or that one group of storage batteries does not work.
In the foregoing scheme, the determining module is specifically configured to determine that the working states of the two groups of storage batteries are discharge imbalances when an absolute value of a difference between current values of the two groups of storage batteries during discharge is greater than or equal to a preset percentage of a total current value of the load.
In the foregoing scheme, the determining module is specifically configured to determine that the operating states of the two sets of storage batteries are that one set of storage batteries does not operate when the current value of one set of storage batteries during discharging is 0, the current value of the other set of storage batteries during discharging is less than-1, and the absolute value of the sum of the current value of the other set of storage batteries during discharging and the total current value of the load is less than 1.
In the foregoing solution, the determining module is specifically configured to, when a current value of one group of storage batteries during discharging is 0, a current value of the other group of storage batteries during discharging is smaller than-1, and an absolute value of a sum of the current value of the other group of storage batteries during discharging and a total current value of the load is smaller than 1; and further judging that the voltages of the two groups of storage batteries during discharging meet the proportional threshold of the voltage dip amplitude, and determining the working state of the two groups of storage batteries as the non-working state of one group of storage batteries.
The method and the device for detecting the working state between the storage battery packs, provided by the embodiment of the invention, are used for collecting the voltage and the current of the two groups of storage batteries during discharging; and determining the working state of the two groups of storage battery packs according to the collected voltage and current and preset judgment conditions. So, patrol and examine the detection with traditional manual work and change into through hardware equipment real-time detection to when the operating condition of two sets of batteries is that discharge unbalance, or a set of battery is out of work, timely early warning tells maintainer, so that maintainer in time handles.
Drawings
FIG. 1 is a schematic flow chart illustrating a method for detecting a working state between battery packs according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an apparatus for detecting an operating state between battery packs according to an embodiment of the present invention.
Detailed Description
In practical applications, the overall state of the battery during discharge is that the current is negative and the voltage tends to decrease. When the storage battery starts to discharge, the voltage of the storage battery is instantly reduced from the original value, the reduced difference value is about 3-4V generally, and the specific performance is different; the voltage then rises back by a small amount and then slowly falls. When the storage battery discharges, the current can be instantly reduced from a positive value or a zero value to a negative value, and the current value is a negative value in the whole discharging process.
When the base station is powered on, the voltage of the storage battery is instantly increased, then slowly increased to start charging, and after the storage battery is fully charged, the storage battery enters floating charging; the current changes from negative value to positive value instantaneously, and decreases after keeping steady for a period of time or directly and gradually decreases. After one power failure, the storage battery is in a discharging state, the voltage of the storage battery slightly rises, the current is a negative value, and the absolute value is much lower than that before, so that the storage battery is discharged by small current.
When two sets of batteries carry out emergent power supply to base station equipment simultaneously, under the condition that two sets of batteries worked simultaneously promptly, voltage was steady decline state. Assuming that i0 is the total load current value, i1 is the current value when one group of storage batteries is discharged, and i2 is the current value when the other group of storage batteries is discharged; then, normally, there are i1< -1A, i2< -1A, | i1+ i2| -i 0, i.e., the load total current value is equal to the absolute value of the sum of the current values at the time of discharge of the two sets of storage currents. Here, the values of i1 and i2 may be manually set according to the conditions of the specific battery itself and the surrounding environment.
Based on the above description, in the embodiment of the present invention, the voltage and the current of the two sets of storage batteries during discharging are collected; and determining the working state of the two groups of storage battery packs according to the collected voltage and current and preset judgment conditions.
The mode of collecting the voltage and the current of the two groups of storage batteries during discharging can be collected in real time according to a preset time interval, and can also be collected at regular time. The voltage is the total output voltage of the two groups of storage batteries, and the current comprises the current of the two groups of storage batteries during discharging.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic flow chart of an implementation of a method for detecting an operating state between battery packs according to an embodiment of the present invention, and as shown in fig. 1, the method for detecting an operating state between battery packs according to an embodiment of the present invention includes:
step S100: collecting voltage and current of two groups of storage batteries during discharging;
step S101: and determining the working state of the two groups of storage battery packs according to the collected voltage and current and preset judgment conditions.
Here, the operating state between the two battery stacks includes: discharge imbalance and a battery pack does not operate.
Specifically, the method comprises the following steps:
the step of determining the working state of the two groups of storage battery packs as discharge imbalance according to the collected voltage and current and the preset judgment condition comprises the following steps: when the absolute value of the difference between the current values of the two groups of storage batteries during discharging is greater than or equal to a preset percentage n% of the total load current value i0, namely | i 1-i 2| ≧ n% i0, determining that the working states of the two groups of storage batteries are discharging imbalance; the preset percentage can be manually set according to the self condition of the specific battery and the surrounding environment, and the value of n is generally 15.
Determining the working state between the two groups of storage battery packs as a group of storage batteries does not work according to the collected voltage and current and a preset judgment condition, wherein the working state comprises the following steps:
when the current value of one group of storage batteries is 0, the current value of the other group of storage batteries is less than-1A, and the absolute value of the sum of the current value of the other group of storage batteries and the total load current value i0 is less than 1A, namely i1 is 0, i2 is less than-1A, and | i0+ i2| < 1A, the working state of the two groups of storage batteries is determined that one group of storage batteries does not work.
In order to improve the accuracy of the judgment, the method for determining the working state between the two groups of storage battery packs as a group of storage batteries does not work according to the collected voltage and current and a preset judgment condition further comprises the following steps: when the current value of one group of storage batteries is 0, the current value of the other group of storage batteries is less than-1A, and the absolute value of the sum of the current value of the other group of storage batteries and the total current value of the load is less than 1A, namely i1 is 0, i2 is less than-1A, and | i0+ i2| < 1A; and further determining that the output total voltage of the two groups of storage batteries meets the voltage dip amplitude threshold, and determining the working state of the two groups of storage batteries as the non-working state of the storage batteries.
Here, the total output voltage of the two groups of storage batteries meets the proportional threshold M of the voltage dip amplitude, namely:wherein, Vj、Vj-1And Vj-2Respectively at the j-th time tjBefore j-1 time tj-1And prior to time j-2, time tj-2The total output voltage values of the two groups of storage batteries are equal to or larger than 2, and the value range of j is a natural number; wherein, the proportional threshold M of the voltage dip amplitude can be manually set according to the self condition of the specific battery and the surrounding environment, and generally M satisfies M>14。
Here, the load total current value i0 is an absolute value of a sum of current values at the time of discharging the two sets of storage batteries.
Further, after performing step S101, the method may further include step S102: and when the working state between the two groups of storage battery packs is determined to be discharge imbalance or one group of storage batteries does not work, sending alarm information.
Specifically, when the working states of the two groups of storage batteries are determined to be discharge imbalance, the alarm information indicates that the current output of the storage battery pack is imbalance, and a maintainer is informed to process the imbalance in time; when the working states of the two groups of storage batteries are determined to be that one group of storage batteries does not work, the alarm information indicates that one group of storage batteries does not work, and maintenance personnel are informed to process the alarm information in time; meanwhile, the alarm information carries the currents collected in the step S100 when the two groups of storage batteries discharge, so that a maintainer can conveniently determine the storage battery pack which does not work in time according to the currents of the storage batteries of the groups and perform corresponding maintenance processing.
Fig. 2 is a schematic structural diagram of a device for detecting an operating state between battery packs according to an embodiment of the present invention, and as shown in fig. 2, the device for detecting an operating state between battery packs according to an embodiment of the present invention includes: the device comprises an acquisition module 10 and a determination module 11; wherein,
the acquisition module 10 is used for acquiring voltage and current of two groups of storage batteries during discharging;
and the determining module 11 is configured to determine the working state between the two groups of storage battery packs according to the collected voltage and current and a preset judgment condition.
The determining module is specifically used for determining that the working states of the two groups of storage batteries are unbalanced in discharge when the absolute value of the difference between the current values of the two groups of storage batteries in discharge is greater than or equal to a preset percentage of the total current value of the load; or,
the determining module is specifically configured to determine that the working states of the two groups of storage batteries are that one group of storage batteries does not work when the current value of one group of storage batteries during discharging is 0, the current value of the other group of storage batteries during discharging is smaller than-1A, and the absolute value of the sum of the current value of the other group of storage batteries during discharging and the total current value of the load is smaller than 1A; or,
the determining module is specifically used for determining that when the current value of one group of storage batteries is 0 during discharging, the current value of the other group of storage batteries is smaller than-1A during discharging, and the absolute value of the sum of the current value of the other group of storage batteries during discharging and the total current value of the load is smaller than 1A; and further determining that the working states of the two groups of storage batteries are that one group of storage batteries do not work when the voltages of the two groups of storage batteries during discharging meet the proportional threshold of the voltage dip amplitude.
And the total load current value is the absolute value of the sum of current values of the two groups of storage batteries during discharging.
Further, the determining module 11 is further configured to send an alarm message when it is determined that the working state between the two groups of storage battery packs is discharging imbalance or when one group of storage batteries does not work.
Specifically, when the working states of the two groups of storage batteries are determined to be discharge imbalance, the alarm information indicates that the current output of the storage battery pack is imbalance, and a maintainer is informed to process the imbalance in time; and when the working states of the two groups of storage batteries are determined to be that one group of storage batteries does not work, the alarm information indicates that one group of storage batteries does not work, and maintenance personnel are informed to process the alarm information in time.
In practical applications, the acquisition module 10 and the determination module 11 may be implemented by a Central Processing Unit (CPU), a Microprocessor (MPU), a Digital Signal Processor (DSP), or a Field Programmable Gate Array (FPGA).
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (8)
1. A method for detecting an operating condition between battery packs, the method comprising:
collecting voltage and current of two groups of storage batteries during discharging;
determining the working state between the two groups of storage battery packs according to the collected voltage and current and a preset judgment condition;
the working state is discharge imbalance or a group of storage batteries do not work;
the determining the working state between the two groups of storage battery packs according to the collected voltage and current and the preset judgment condition comprises the following steps: and when the current value of one group of storage batteries during discharging is 0, the current value of the other group of storage batteries during discharging is smaller than-1A, and the absolute value of the sum of the current value of the other group of storage batteries during discharging and the total current value of the load is smaller than 1A, determining that the working states of the two groups of storage batteries are that one group of storage batteries does not work.
2. The method of claim 1, further comprising: and when the working state between the two groups of storage battery packs is determined to be discharge imbalance or one group of storage batteries does not work, sending alarm information.
3. The method according to claim 1 or 2, wherein the determining the working state between the two groups of storage battery packs according to the collected voltage and current and the preset judgment condition comprises: and when the absolute value of the difference between the current values of the two groups of storage batteries during discharging is greater than or equal to the preset percentage of the total current value of the load, determining that the working states of the two groups of storage batteries are discharging imbalance.
4. The method according to claim 1 or 2, wherein the determining the working state between the two groups of storage battery packs according to the collected voltage and current and the preset judgment condition comprises: when one group of storage batteries is discharged, the current value is 0, the current value of the other group of storage batteries is less than-1A, and the absolute value of the sum of the current value of the other group of storage batteries and the total current value of the load is less than 1A; and further determining that the working states of the two groups of storage batteries are that one group of storage batteries do not work when the voltages of the two groups of storage batteries during discharging meet the proportional threshold of the voltage dip amplitude.
5. An apparatus for detecting an operating condition between battery packs, the apparatus comprising: the device comprises an acquisition module and a determination module; wherein,
the acquisition module is used for acquiring voltage and current of the two groups of storage batteries during discharging;
the determining module is used for determining the working state between the two groups of storage battery packs according to the acquired voltage and current and a preset judging condition;
the working state is discharge imbalance or a group of storage batteries do not work;
the determining module is specifically configured to determine that the working states of the two groups of storage batteries are that one group of storage batteries does not work when the current value of one group of storage batteries during discharging is 0, the current value of the other group of storage batteries during discharging is smaller than-1A, and the absolute value of the sum of the current value of the other group of storage batteries during discharging and the total current value of the load is smaller than 1A.
6. The device according to claim 5, wherein the determining module is further configured to send an alarm message when determining that the operating state between the two groups of battery packs is discharge imbalance or when determining that one group of batteries does not operate.
7. The apparatus according to claim 5 or 6, wherein the determining module is specifically configured to determine the operating status of the two sets of storage batteries as discharge imbalance when the absolute value of the difference between the current values of the two sets of storage batteries during discharge is greater than or equal to a preset percentage of the total current value of the load.
8. The device according to claim 5 or 6, wherein the determining module is specifically configured to set the current value when one group of storage batteries is discharged to be 0, set the current value when another group of storage batteries is discharged to be less than-1A, and set the absolute value of the sum of the current value when the other group of storage batteries is discharged and the total current value of the load to be less than 1A; and further judging that the voltages of the two groups of storage batteries during discharging meet the proportional threshold of the voltage dip amplitude, and determining the working state of the two groups of storage batteries as the non-working state of one group of storage batteries.
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| CN202405387U (en) * | 2011-12-01 | 2012-08-29 | 吴瑞荣 | Remote comprehensive management system for storage battery of mobile base station |
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| JP4130186B2 (en) * | 2004-11-12 | 2008-08-06 | 三洋電機株式会社 | Pack battery |
| CN101067644B (en) * | 2007-04-20 | 2010-05-26 | 杭州高特电子设备有限公司 | Storage battery performance analytical expert diagnosing method |
| JP6030817B2 (en) * | 2010-06-04 | 2016-11-24 | エスアイアイ・セミコンダクタ株式会社 | Battery state monitoring circuit and battery device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101577438A (en) * | 2009-06-19 | 2009-11-11 | 深圳市迪迪美环保科技有限公司 | High-capacity back-up power maintaining method based on remote monitoring platform |
| CN102074763A (en) * | 2010-12-27 | 2011-05-25 | 珠海金峰航电源科技有限公司 | Battery engine |
| CN202405387U (en) * | 2011-12-01 | 2012-08-29 | 吴瑞荣 | Remote comprehensive management system for storage battery of mobile base station |
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