CN111308353A - Storage battery abnormity judgment method and system - Google Patents
Storage battery abnormity judgment method and system Download PDFInfo
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/367—Software therefor, e.g. for battery testing using modelling or look-up tables
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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Abstract
The invention provides a storage battery abnormity judgment method, which comprises the following steps: measuring the physical quantity of the storage battery in real time at certain intervals, and recording and storing the physical quantity; comparing the real-time measured physical quantity of the storage battery with a set real-time threshold value of the corresponding physical quantity of the storage battery, and judging whether the real-time threshold value is exceeded or not so as to judge the state of the storage battery; and analyzing and processing the recorded data of the physical quantity of the storage battery according to a certain interval period, comparing the processing result with a set period threshold value of the corresponding physical quantity of the storage battery, and judging whether the processing result exceeds the period threshold value so as to analyze and predict the state of the storage battery. The storage battery abnormity judging method and the storage battery abnormity judging system provided by the invention can monitor the state of the storage battery, judge and predict according to the monitoring record of the storage battery, judge whether the state of the storage battery is abnormal and send out corresponding alarm information.
Description
Technical Field
The invention relates to the technical field of power electronics, in particular to a storage battery abnormity judgment method and system.
Background
In a power distribution system provided with a built-in backup storage battery such as an Uninterruptible Power Supply (UPS), the detection of the abnormity of the storage battery is particularly important to ensure that the related power supply information can be normally recorded and the power failure protection function is generated on the power distribution system when the power distribution system is abnormal, if the battery fails or has insufficient capacity, serious accidents can be caused, so that the operation parameters of the storage battery, such as internal resistance, capacity, voltage, discharge current, storage battery temperature and the like of the storage battery, must be comprehensively monitored on line, and one of the important marks of the state of the storage battery is the internal resistance of the storage battery, and the internal resistance change of the storage battery can be reflected no matter the storage battery is about to fail, has insufficient capacity or is improper to charge and discharge. Therefore, the state of the storage battery can be evaluated by measuring the internal resistance of the storage battery, but the internal resistance of the storage battery presents different internal resistance values in different working processes and different voltage levels, so that the direct and effective functional relationship with whether the storage battery is abnormal or not is difficult to generate. The existing method for comparing the transverse indexes of the storage batteries can represent a certain storage battery state, but no effective method is formed in the development and change process of the internal resistance value of the storage battery. In addition, the physical quantity parameters of the storage battery in the power distribution system are monitored only singly at present, and the state of the storage battery cannot be completely reflected.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a storage battery abnormity judgment method and a storage battery abnormity judgment system, which can monitor the state of a storage battery in real time, can judge and predict the state of the storage battery according to the historical monitoring record of the storage battery, judge whether the storage battery is abnormal, and send out corresponding alarm information, thereby having important significance for the normal and safe operation of a power distribution system.
In order to achieve the above object, the present invention provides a method for determining an abnormality of a storage battery, including: measuring the physical quantity of the storage battery in real time at certain intervals, and recording and storing the physical quantity; and comparing the real-time measured physical quantity of the storage battery with a real-time threshold value of a set corresponding physical quantity, and judging whether the real-time threshold value is exceeded or not so as to judge whether the state of the storage battery is abnormal or not. The real-time threshold value is a threshold value set for comparison with a real-time value of the measured physical quantity of the storage battery, and is set by comprehensively considering different storage battery types, different physical quantities of the storage battery, and different use conditions.
Further, the data of the physical quantity of the storage battery, which is measured, recorded and stored in real time, is subjected to statistical processing according to a certain interval period, the data processing result of the certain interval period is compared with a period threshold value of a set corresponding physical quantity, and whether the period threshold value is exceeded or not is judged so as to judge whether the state of the storage battery is normal or not. The cycle threshold value is set for comparing with the value of the measured physical quantity of the storage battery in a certain interval cycle, and is comprehensively considered and set according to different storage battery types, different physical quantities of the storage battery and different use conditions; compared with the real-time threshold, the period threshold considers the change situation of the physical quantity of the storage battery in a relatively long period of time, and can reflect the change trend of the state of the storage battery in a long period of time.
Optionally, the battery state comprises at least: the storage battery is normal, the storage battery needs to be noticed, and the storage battery needs to be replaced when abnormal; the battery state information display may be performed in one of the following manners: text, indicator light, sound, graphics.
Optionally, the real-time threshold sets at least two of: normal real-time threshold value and alarm real-time threshold value; when the value of any one of the real-time measured physical quantities of the storage battery is within the normal real-time threshold value of the corresponding physical quantity, displaying a sign that the storage battery is normal; when one of the values of the physical quantity of the storage battery measured in real time deviates from the alarm real-time threshold value of the corresponding physical quantity, displaying a mark that the storage battery is abnormally replaced; in other cases, when the value of any one of the physical quantities of the storage battery measured in real time is within the alarm real-time threshold value of the corresponding physical quantity, the mark that the storage battery needs to draw attention is displayed.
Preferably, the time interval for measuring the physical quantity of the storage battery in real time is 15min, and obviously, other fixed time can be set. For some storage battery physical quantity measuring periods are long and have large influence on the service life of the storage battery, but the electric system cannot be immediately damaged, such as the capacity of the storage battery, the corresponding time interval for measuring the storage battery physical quantity in real time is suitable for the storage battery physical quantity, and other fixed time can be selected.
Optionally, the period threshold sets at least two of: a normal cycle threshold value and an alarm cycle threshold value; when the value of any one of the physical quantities of the storage battery measured in the interval period is within the normal period threshold value of the corresponding physical quantity, displaying a sign that the storage battery is normal; when one of the values of any physical quantity of the storage battery measured in the interval period deviates from the alarm period threshold value of the corresponding physical quantity, displaying a mark that the storage battery is abnormally replaced; in other cases, when the value of any one of the physical quantities of the storage battery measured in the interval period is within the alarm period threshold value of the corresponding physical quantity, the mark that the storage battery should draw attention is displayed.
Optionally, the interval period is one of the following: week, month, year, or some fixed number of days.
Optionally, the physical quantity of the storage battery comprises at least one of the following: internal resistance of the storage battery, voltage of the storage battery, current of the storage battery, working temperature of the storage battery and capacity of the storage battery.
The invention also provides a storage battery abnormity judgment system, which comprises; the measuring module is used for measuring the physical quantity of the storage battery in real time and is electrically connected with the storage battery; a storage module that stores the storage battery physical quantity record information of the storage battery abnormality judgment system, in particular, data of the storage battery physical quantity; the calculation processing module is used for calculating and comparing the physical quantity of the storage battery provided by the measurement module, calculating and comparing data provided by the storage module, and outputting calculation or judging the state condition of the storage battery; and the display alarm module is used for displaying the judgment result of the state of the storage battery, outputting the state information of the storage battery and carrying out parameter human-computer interaction setting through a screen.
Optionally, the method further comprises: and the communication module is used for carrying out remote communication with the monitoring host and/or the upper computer to realize remote display of the state of the storage battery.
The method and the system for judging the abnormity of the storage battery have the beneficial effects that: the storage battery abnormity judgment method and the storage battery abnormity judgment system realize the real-time monitoring of the state of the storage battery and the state judgment through the monitoring or the combined monitoring of one or more physical quantities of the storage battery, can regularly judge according to the historical monitoring record of the storage battery and predict the state of the storage battery, judge whether the state of the storage battery is abnormal or not and has the degradation trend, determine different changes of the storage battery through the setting of various real-time threshold values and periodic threshold values, send corresponding alarm information and prompt a user to take corresponding measures as soon as possible.
Drawings
Fig. 1 is a flowchart of a method for determining an abnormality of a storage battery according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for determining an abnormality of a storage battery according to a second embodiment of the present invention;
fig. 3 is a flowchart of a method for determining an abnormality of a storage battery according to a third embodiment of the present invention;
fig. 4 is a functional block diagram of a battery abnormality determination system according to a fourth embodiment of the present invention.
Detailed Description
The storage battery abnormality determination method and system of the present invention will be described in detail below with reference to the accompanying drawings.
Example one
Fig. 1 is a flowchart illustrating a method for determining an abnormality of a storage battery according to a first embodiment of the present invention, and another method for determining an abnormality of a storage battery according to a first embodiment of the present invention may be performed by a system for determining an abnormality of a storage battery as illustrated in fig. 4.
The respective steps of the battery abnormality determination method will now be described with reference to the flowchart shown in fig. 1.
In step S101, the physical quantity of the storage battery is measured in real time at intervals of a certain time, and recorded and stored.
The physical quantity of the storage battery in the invention refers to one or a combination of the following physical quantities: internal resistance of the storage battery, voltage of the storage battery, current of the storage battery, working temperature of the storage battery and capacity of the storage battery. The physical quantity of the storage battery at this time may be an instantaneous physical quantity of the storage battery, or may be an effective value or an average value of the physical quantity of the storage battery within a fixed time by generating a curve within the fixed time from the acquired instantaneous physical quantity of the storage battery. The physical quantity of the storage battery selected in the embodiment is described by taking the combined monitoring of the internal resistance value of the storage battery and the voltage of the storage battery as an example, and certainly, only the internal resistance of the storage battery can be detected, and the physical quantities of other storage batteries are the same as the internal resistance of the storage battery, so that detailed description is omitted; it is worth to be noted that some physical quantities of the storage battery show a gradually decreasing trend along with the change of time, such as the capacity of the storage battery, the voltage of the storage battery, and the like, and the corresponding real-time threshold value and the period threshold value are set to be suitable for the change trend of the physical quantities of the storage battery.
Preferably, the time interval for measuring the physical quantity of the storage battery in real time is 15 min; of course, the time interval may also be set to 10min or 20min, the setting of measuring the physical quantity of the storage battery in real time comprehensively considers the application scenario, the type of the collected physical quantity of the storage battery, the required storage space, and the like, the setting of the time interval is too long, which makes it difficult to represent the real-time information of the system, and the setting of the time interval is too short, which causes too much collected data, occupies too much storage space, and is easy to waste resources.
The above-described battery abnormality determination method according to the embodiment of the present invention may be implemented in hardware, firmware, or as software or computer code storable in a recording medium such as a CD-ROM, a RAM, a floppy disk, a hard disk, or a magneto-optical disk, or as computer code originally stored in a remote recording medium or a non-transitory machine-readable medium downloaded via a network and to be stored in a local recording medium, so that the method described herein may be stored in such software processing on a recording medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware such as an ASIC or FPGA. It is understood that the computer, processor, microprocessor controller or programmable hardware includes memory components (e.g., RAM, ROM, flash memory, etc.) that can store or receive software or computer code that, when accessed and executed by the computer, processor or hardware, implements the battery abnormality determination methods described herein.
In step S102, the physical quantity of the storage battery measured in real time is compared with a real-time threshold value set for the corresponding physical quantity, and whether the state of the storage battery is abnormal or not is determined in real time according to the comparison result. For example: and comparing the internal resistance value and the voltage of the storage battery measured in real time with the set internal resistance value and the set real-time threshold value of the storage battery, judging and analyzing the state of the storage battery in real time according to the comparison result, judging whether the state exceeds the range of the internal resistance value and the real-time threshold value of the voltage of the storage battery, and displaying corresponding alarm information when one of the internal resistance value and the voltage of the storage battery exceeds the corresponding real-time threshold value of the physical quantity of the storage battery.
In step S103, the corresponding battery state warning information is displayed. Optionally, the battery state comprises at least: the storage battery is normal, the storage battery needs to be noticed, and the storage battery needs to be replaced when abnormal; the battery status flag or information display may be in one of the following ways: characters, indicator lights, sounds and figures, so that maintenance personnel can conveniently check and find hidden dangers of the storage battery in time.
In the method for determining an abnormality of a storage battery according to this embodiment, the real-time threshold is set to at least two of: normal real-time threshold value and alarm real-time threshold value; when the value of any one of the real-time measured physical quantities of the storage battery is within the normal real-time threshold value of the corresponding physical quantity, displaying a sign that the storage battery is normal; when one of the values of the physical quantity of the storage battery measured in real time deviates from the alarm real-time threshold value of the corresponding physical quantity, displaying a mark that the storage battery is abnormally replaced; in other cases, when the value of any one of the physical quantities of the storage battery measured in real time is within the alarm real-time threshold value of the corresponding physical quantity, the mark that the storage battery needs to draw attention is displayed. For example: the method adopts a mode of measuring two storage battery physical quantities, namely storage battery internal resistance and storage battery voltage, when the storage battery internal resistance value measured in real time is R and the storage battery voltage value measured in real time is U, the set normal real-time threshold value of the storage battery internal resistance value is R1, the set alarm real-time threshold value of the storage battery internal resistance value is R2, the set normal real-time threshold value of the storage battery voltage value is U1, and the set alarm real-time threshold value of the storage battery temperature value is U2, wherein the R1, the R2, the U1 and the U2 are determined according to different battery types and different use environments: it should be noted that, unlike the internal resistance of the battery, the voltage of the battery tends to decrease gradually as the service life increases, and therefore, the setting of the normal real-time threshold value and the alarm real-time threshold value of the battery voltage is sufficiently considered.
When R < R1 and U > U1, a flag or information that the battery is normal is displayed, indicating that the battery state is normal at this time.
When R2 is less than or equal to R or U2 is more than or equal to U, a mark or information that the storage battery is abnormally replaced is displayed, the storage battery is indicated that the storage battery is abnormally used and can not be used any more, otherwise, the storage battery loses the function of a standby power supply and even causes safety accidents.
Otherwise, that is, when R1 ≦ R < R2 and U1 ≧ U > U2, or R1 ≦ R < R2 and U > U1, or R < R1 and U1 ≧ U > U2, a flag or information to be noticed by the battery is displayed, indicating that the state of the battery is relatively normal but has changed and should be noticed.
The method for determining the abnormality of the storage battery provided in this embodiment is a method of determining the combination of the internal resistance of the storage battery and the voltage of the storage battery, and may also use only one physical quantity of the storage battery, for example, determine only the internal resistance of the storage battery. The storage battery abnormality determination method provided in the embodiment is suitable for determining abnormality of storage battery physical quantity which is caused by abrupt abnormality of the storage battery and is harmful to a system.
Example two
Fig. 2 is a flowchart illustrating a method for determining an abnormality of a storage battery according to a second embodiment of the present invention, which is performed by the system for determining an abnormality of a storage battery shown in fig. 4.
The respective steps of the battery abnormality determination method will now be described in detail with reference to the flowchart shown in fig. 2.
In step S201, the physical quantity of the storage battery is measured in real time at intervals of a certain time, and recorded and stored.
The physical quantity of the storage battery in the invention refers to one or a combination of the following physical quantities: internal resistance of the storage battery, voltage of the storage battery, current of the storage battery, working temperature of the storage battery and capacity of the storage battery. The physical quantity of the storage battery at this time may be an instantaneous physical quantity of the storage battery, or may be an effective value or an average value of the physical quantity of the storage battery within a fixed time by generating a curve within the fixed time from the acquired instantaneous physical quantity of the storage battery. The physical quantity of the storage battery selected in the embodiment is described by taking the combined monitoring of the internal resistance value of the storage battery and the temperature of the storage battery as an example, and certainly, only the internal resistance of the storage battery can be detected, which is not described in detail herein; it is worth to be noted that some physical quantities of the storage battery show a gradually decreasing trend along with the change of time, such as the capacity of the storage battery, the voltage of the storage battery, and the like, and the corresponding real-time threshold value and the period threshold value are set to be suitable for the change trend of the physical quantities of the storage battery.
Preferably, the time interval for measuring the physical quantity of the storage battery in real time is 15 min; of course, the time interval may also be set to 10min or 20min, the setting of measuring the physical quantity of the storage battery in real time comprehensively considers the application scenario, the type of the collected physical quantity of the storage battery, the required storage space, and the like, the setting of the time interval is too long, which makes it difficult to represent the real-time information of the system, and the setting of the time interval is too short, which causes too much collected data, occupies too much storage space, and is easy to waste resources.
In step S202, the recorded data of the physical quantity of the storage battery is analyzed at regular intervals, and it is determined whether or not a period threshold corresponding to the physical quantity of the storage battery is exceeded to analyze the state of the storage battery.
Optionally, the interval period is one of the following: day, week, or some fixed number of days. In the method for determining battery abnormality provided in the second embodiment, because the real-time determination of the real-time measurement value is lacked, the time for measuring the corresponding interval period is correspondingly shortened, and the battery abnormality is discovered in time. For example, the internal resistance data of the storage battery in one week is counted and the average value is calculated,
if the temperature of the storage battery is measured, the temperature data of the storage battery in one week are counted and the average value is calculated,
in step S203, the data processing result of the certain interval period is compared with the period threshold value of the set corresponding physical quantity, and whether the period threshold value is exceeded is determined, so as to determine whether the state of the storage battery is normal. The period threshold sets at least two of: a normal cycle threshold value and an alarm cycle threshold value; when the value of any one of the physical quantities of the storage battery measured in the interval period is within the normal period threshold value of the corresponding physical quantity, displaying a sign that the storage battery is normal; when one of the values of any physical quantity of the storage battery measured in the interval period deviates from the alarm period threshold value of the corresponding physical quantity, displaying a mark that the storage battery is abnormally replaced; in other cases, when the value of any one of the physical quantities of the storage battery measured in the interval period is within the alarm period threshold value of the corresponding physical quantity, the mark that the storage battery should draw attention is displayed. For example: the method adopts a mode of measuring two storage battery physical quantities, namely the storage battery internal resistance and the storage battery temperature, and the average value of the storage battery internal resistance values measured periodically is
The average value of the periodically measured temperature values of the storage battery is
The set normal cycle threshold value of the internal resistance value of the storage battery is R3, the set alarm cycle threshold value of the internal resistance value of the storage battery is R4, the set normal cycle threshold value of the temperature value of the storage battery is T3, and the set alarm cycle threshold value of the temperature value of the storage battery is T4, wherein the R3, the R4, the T3 and the T4 are determined according to different battery types and different use environments:
when in use
And is
And displaying a sign or information that the storage battery is normal, which indicates that the state of the storage battery is normal at the moment.
When in use
Or
And if the storage battery is abnormal, a mark or information indicating that the storage battery is abnormal and needs to be replaced is displayed, and the storage battery cannot be used any more, otherwise the storage battery loses the function of the standby power supply and even causes safety accidents.
In other cases, i.e. when
And is
Or
And is
Or
And is
When the battery is in a normal state, the change of the battery state is displayed, and the attention of the battery is paid.
In step S204, the corresponding battery state warning information is displayed. Optionally, the battery state comprises at least: the storage battery is normal, the storage battery needs to be noticed, and the storage battery needs to be replaced when abnormal; the battery status flag or information display may be in one of the following ways: characters, indicator lights, sounds and figures, so that maintenance personnel can conveniently check and find hidden dangers of the storage battery in time.
The above-described battery abnormality determination method according to the embodiment of the present invention may be implemented in hardware, firmware, or as software or computer code storable in a recording medium such as a CD-ROM, a RAM, a floppy disk, a hard disk, or a magneto-optical disk, or as computer code originally stored in a remote recording medium or a non-transitory machine-readable medium downloaded via a network and to be stored in a local recording medium, so that the method described herein may be stored in such software processing on a recording medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware such as an ASIC or FPGA. It is understood that the computer, processor, microprocessor controller or programmable hardware includes memory components (e.g., RAM, ROM, flash memory, etc.) that can store or receive software or computer code that, when accessed and executed by the computer, processor or hardware, implements the battery abnormality determination methods described herein.
Optionally, the data of the internal resistance value information of the storage battery in the previous same interval period may be compared to form an internal resistance value R or R of the storage battery with time t as a horizontal axis
Is a graph with a vertical axis, and can also display the internal resistance value T or
And a curve chart of a vertical axis is used for judging the change trend of the internal resistance or the temperature of the storage battery.
The second embodiment provides a method for determining battery abnormality, which is suitable for determining battery physical quantity abnormality which is slow in battery deterioration but not harmful to the system.
EXAMPLE III
Fig. 3 is a flowchart illustrating a method for determining an abnormality of a storage battery according to a third embodiment of the present invention, which is performed by a system for determining an abnormality of a storage battery as illustrated in fig. 4.
The respective steps of the battery abnormality determination method will now be described in detail with reference to the flowchart shown in fig. 3.
In step S301, the physical quantity of the storage battery is measured in real time at intervals of a certain time, and recorded and stored.
The physical quantity of the storage battery in the invention refers to one or a combination of the following physical quantities: internal resistance of the storage battery, voltage of the storage battery, current of the storage battery, working temperature of the storage battery and capacity of the storage battery. The physical quantity of the storage battery at this time may be an instantaneous physical quantity of the storage battery, or may be an effective value or an average value of the physical quantity of the storage battery within a fixed time by generating a curve within the fixed time from the acquired instantaneous physical quantity of the storage battery. The physical quantity of the storage battery selected in the embodiment is described by taking the combined monitoring of the internal resistance value of the storage battery and the temperature of the storage battery as an example, and certainly, only the internal resistance of the storage battery can be detected, and the physical quantities of other storage batteries are the same as the internal resistance of the storage battery, so that detailed description is omitted; it is worth to be noted that some physical quantities of the storage battery show a gradually decreasing trend along with the change of time, such as the capacity of the storage battery, the voltage of the storage battery, and the like, and the corresponding real-time threshold value and the period threshold value are set to be suitable for the change trend of the physical quantities of the storage battery.
Preferably, the time interval for measuring the physical quantity of the storage battery in real time is 15 min; of course, the time interval may also be set to 10min or 20min, the setting of measuring the physical quantity of the storage battery in real time comprehensively considers the application scenario, the type of the collected physical quantity of the storage battery, the required storage space, and the like, the setting of the time interval is too long, which makes it difficult to represent the real-time information of the system, and the setting of the time interval is too short, which causes too much collected data, occupies too much storage space, and is easy to waste resources.
The above-described battery abnormality determination method according to the embodiment of the present invention may be implemented in hardware, firmware, or as software or computer code storable in a recording medium such as a CD-ROM, a RAM, a floppy disk, a hard disk, or a magneto-optical disk, or as computer code originally stored in a remote recording medium or a non-transitory machine-readable medium downloaded via a network and to be stored in a local recording medium, so that the method described herein may be stored in such software processing on a recording medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware such as an ASIC or FPGA. It is understood that the computer, processor, microprocessor controller or programmable hardware includes memory components (e.g., RAM, ROM, flash memory, etc.) that can store or receive software or computer code that, when accessed and executed by the computer, processor or hardware, implements the battery abnormality determination methods described herein.
In step S302, the physical quantity of the storage battery measured in real time is compared with a real-time threshold value set for the corresponding physical quantity, and whether the state of the storage battery is abnormal or not is determined in real time according to the comparison result. For example: and comparing the internal resistance value and the temperature of the storage battery measured in real time with the set internal resistance value and the set real-time threshold value of the storage battery, judging and analyzing the state of the storage battery in real time according to the comparison result, judging whether the internal resistance value and the temperature of the storage battery exceed the ranges of the internal resistance value and the real-time threshold value of the storage battery, and displaying corresponding alarm information when one of the internal resistance value and the temperature of the storage battery exceeds the corresponding range of the physical quantity of the storage battery.
In step S305, the corresponding battery state warning information is displayed. Optionally, the battery state comprises at least: the storage battery is normal, the storage battery needs to be noticed, and the storage battery needs to be replaced when abnormal; the battery status flag or information display may be in one of the following ways: characters, indicator lights, sounds and figures, so that maintenance personnel can conveniently check and find hidden dangers of the storage battery in time.
In the method for determining an abnormality of a storage battery according to this embodiment, the real-time threshold is set to at least two of: normal real-time threshold value and alarm real-time threshold value; when the value of any one of the real-time measured physical quantities of the storage battery is within the normal real-time threshold value of the corresponding physical quantity, displaying a sign that the storage battery is normal; when one of the values of the physical quantity of the storage battery measured in real time deviates from the alarm real-time threshold value of the corresponding physical quantity, displaying a mark that the storage battery is abnormally replaced; in other cases, when the value of any one of the physical quantities of the storage battery measured in real time is within the alarm real-time threshold value of the corresponding physical quantity, the mark that the storage battery needs to draw attention is displayed. For example: the method adopts a mode of measuring two storage battery physical quantities, namely storage battery internal resistance and storage battery temperature, when the storage battery internal resistance value measured in real time is R and the storage battery temperature value measured in real time is T, the set normal real-time threshold value of the storage battery internal resistance value is R1, the set alarm real-time threshold value of the storage battery internal resistance value is R2, the set normal real-time threshold value of the storage battery temperature value is T1, and the set alarm real-time threshold value of the storage battery temperature value is T2, wherein the R1, the R2, the T1 and the T2 are determined according to different battery types and different use environments:
when R < R1 and T < T1, a flag or information that the battery is normal is displayed, indicating that the battery state is normal at this time.
When R2 is less than or equal to R or T2 is less than or equal to T, a sign or information that the storage battery is abnormally replaced is displayed, the storage battery is indicated that the storage battery is abnormally used and can not be used any more, otherwise, the storage battery loses the function of a standby power supply and even causes safety accidents.
In other cases, that is, when R1 ≦ R < R2 and T1 ≦ T < T2, or R1 ≦ R < R2 and T < T1, or R < R1 and T1 ≦ T < T2, a flag or information that the battery should be noticed is displayed, indicating that the battery state is relatively normal but a change has occurred, and attention should be paid.
In step S303, the recorded data of the physical quantity of the storage battery is analyzed at regular intervals, and it is determined whether or not a period threshold corresponding to the physical quantity of the storage battery is exceeded to analyze the state of the storage battery.
Optionally, the interval period is one of the following: week, month, year, or some fixed number of days. Preferably, the interval period is one month, and the physical quantity data of the storage battery stored in one month is processed. For example, the internal resistance data of the storage battery in one month is counted and the average value is calculated,
if the temperature of the storage battery is measured, the temperature data of the storage battery within one month are counted and the average value is calculated,
in step S304, the data processing result of a certain interval period is compared with a period threshold corresponding to the set physical quantity, and whether the period threshold is exceeded is determined, so as to determine whether the state of the storage battery is normal. The period threshold sets at least two of: a normal cycle threshold value and an alarm cycle threshold value; when the value of any one of the physical quantities of the storage battery measured in the interval period is within the normal period threshold value of the corresponding physical quantity, displaying a sign that the storage battery is normal; when one of the values of any physical quantity of the storage battery measured in the interval period deviates from the alarm period threshold value of the corresponding physical quantity, displaying a mark that the storage battery is abnormally replaced; in other cases, when the value of any one of the physical quantities of the storage battery measured in the interval period is within the alarm period threshold value of the corresponding physical quantity, the mark that the storage battery should draw attention is displayed. For example: the method adopts a mode of measuring two storage battery physical quantities, namely the storage battery internal resistance and the storage battery temperature, and the average value of the storage battery internal resistance values measured periodically is
The average value of the periodically measured temperature values of the storage battery is
The set normal cycle threshold value of the internal resistance value of the storage battery is R3, the set alarm cycle threshold value of the internal resistance value of the storage battery is R4, the set normal cycle threshold value of the temperature value of the storage battery is T3, and the set alarm cycle threshold value of the temperature value of the storage battery is T4, wherein the R3, the R4, the T3 and the T4 are determined according to different battery types and different use environments:
when in use
And is
When it is, the accumulated power is displayedA cell health flag or message indicating that the battery is in a healthy state at that time.
When in use
Or
And if the storage battery is abnormal, a mark or information indicating that the storage battery is abnormal and needs to be replaced is displayed, and the storage battery cannot be used any more, otherwise the storage battery loses the function of the standby power supply and even causes safety accidents.
In other cases, i.e. when
And is
Or
And is
Or
And is
When the battery is in a normal state, the change of the battery state is displayed, and the attention of the battery is paid.
Optionally, the data of the internal resistance value information of the storage battery in the previous same interval period may be compared to form an internal resistance value R or R of the storage battery with time t as a horizontal axis
Is a graph with a vertical axis, and can also display the internal resistance value T or
And a curve chart of a vertical axis is used for judging the change trend of the internal resistance or the temperature of the storage battery.
Example four
Fig. 4 is a functional block diagram showing a storage battery abnormality determination system according to a fourth embodiment of the present invention; the storage battery abnormality determination system 4 provided by the embodiment of the present invention includes: the measuring module 401 is electrically connected with the storage battery 5, measures the physical quantity of the storage battery in real time and outputs the measuring result; a storage module 404 for storing the storage battery physical quantity record information of the storage battery abnormality determination system 4, in particular, data of the storage battery physical quantity; a calculation processing module 402, which performs calculation comparison on the physical quantity of the storage battery provided by the measurement module 401, performs calculation and comparison processing on the data provided by the storage module 404, and outputs calculation or judges the state condition of the storage battery; and a display alarm module 403 for displaying the judgment result of the storage battery state, outputting the storage battery state information, and performing parameter human-computer interaction setting through a screen.
In the block diagram of the battery abnormality determination system provided in the fourth embodiment of the present invention, the storage module 404 may be located in a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a removable hard disk, a CD-ROM, or any other form of storage medium known in the art. A storage medium may be coupled to the processor such that the processor can read information from, and write information to, the storage medium; or the storage medium may be integral to the processor, and the processor and the storage medium may reside in an Application Specific Integrated Circuit (ASIC).
In the block diagram of the battery abnormality determining system provided in the fourth embodiment of the present invention, the display alarm module 403 may include at least one of a display screen, a display lamp, or a speaker, and notify the user of the battery state information by displaying the corresponding battery state information on the display screen, or distinguish different battery state information by displaying the display lamps in different colors or positions or by emitting different sounds, so that the user can know the battery state as soon as possible and make corresponding maintenance selections.
Optionally, the battery abnormality determination system 4 further includes: the communication module 405 is used for performing remote communication with the monitoring host and/or the upper computer to realize remote display of the state of the storage battery, and the remote communication can be realized through modes such as Ethernet or Wireless Local Area Network (WLAN).
The storage battery abnormity judging method and the storage battery abnormity judging system provided by the invention can realize the real-time monitoring of the state of the storage battery and the state judgment through the monitoring of one or more physical quantities of the storage battery, can regularly judge according to the historical monitoring record of the storage battery and predict the state of the storage battery, judge whether the state of the storage battery is abnormal or not, and send corresponding alarm information to prompt a user to take corresponding measures as soon as possible.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention, and all such changes or substitutions are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A method for determining an abnormality of a storage battery, comprising:
measuring the physical quantity of the storage battery in real time at certain intervals, and recording and storing the physical quantity;
and comparing the real-time measured physical quantity of the storage battery with a real-time threshold value of a set corresponding physical quantity, and judging whether the real-time threshold value is exceeded or not so as to judge whether the state of the storage battery is abnormal or not.
2. The battery abnormality determination method according to claim 1, further comprising performing statistical processing on the data of the physical quantity of the battery, which is measured, recorded and stored in real time, according to a certain interval period, comparing the data processing result of the certain interval period with a period threshold value set for the corresponding physical quantity, and determining whether the period threshold value is exceeded, to determine whether the state of the battery is normal.
3. The battery abnormality determination method according to claim 1 or 2, characterized in that the battery state includes at least: the storage battery is normal, the storage battery needs to be noticed, and the storage battery needs to be replaced when abnormal; the display of the battery state may be by one of: text, indicator light, sound, graphics.
4. The battery abnormality determination method according to claim 1, wherein the real-time threshold value is set to at least two of: normal real-time threshold value and alarm real-time threshold value; when the value of any one of the real-time measured physical quantities of the storage battery is within the normal real-time threshold value of the corresponding physical quantity, displaying a sign that the storage battery is normal; when one of the values of the physical quantity of the storage battery measured in real time deviates from the alarm real-time threshold value of the corresponding physical quantity, displaying a mark that the storage battery is abnormally replaced; in other cases, when the value of any one of the physical quantities of the storage battery measured in real time is within the alarm real-time threshold value of the corresponding physical quantity, the mark that the storage battery needs to draw attention is displayed.
5. The battery abnormality determination method according to claim 4, wherein the time interval for measuring the physical quantity of the battery in real time is 15 min.
6. The battery abnormality determination method according to claim 2, wherein the cycle threshold value is set to at least two of: a normal cycle threshold value and an alarm cycle threshold value; when the value of any one of the physical quantities of the storage battery measured in the interval period is within the normal period threshold value of the corresponding physical quantity, displaying a sign that the storage battery is normal; when one of the values of any physical quantity of the storage battery measured in the interval period deviates from the alarm period threshold value of the corresponding physical quantity, displaying a mark that the storage battery is abnormally replaced; in other cases, when the value of any one of the physical quantities of the storage battery measured in the interval period is within the alarm period threshold value of the corresponding physical quantity, the mark that the storage battery should draw attention is displayed.
7. The battery abnormality determination method according to claim 6, wherein the interval period is one of: week, month, year, or some fixed number of days.
8. The method for determining an abnormality of a storage battery according to any one of claims 1 to 7, wherein the physical quantity of the storage battery includes one or a combination of: internal resistance of the storage battery, voltage of the storage battery, current of the storage battery, working temperature of the storage battery and capacity of the storage battery.
9. A battery abnormality determination system characterized by comprising:
the measuring module is used for measuring the physical quantity of the storage battery in real time and is electrically connected with the storage battery;
a storage module that stores the storage battery physical quantity record information of the storage battery abnormality judgment system, in particular, data of the storage battery physical quantity;
the calculation processing module is used for calculating and comparing the physical quantity of the storage battery provided by the measurement module, calculating and comparing data provided by the storage module, and outputting calculation or judging the state condition of the storage battery;
and the display alarm module is used for displaying the judgment result of the state of the storage battery, outputting the state information of the storage battery and carrying out parameter human-computer interaction setting through a screen.
10. The battery abnormality determination system according to claim 9, characterized by further comprising: and the communication module is used for carrying out remote communication with the monitoring host and/or the upper computer to realize remote display of the state of the storage battery.
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