CN110618388A - Battery performance detection method and device - Google Patents
Battery performance detection method and device Download PDFInfo
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- CN110618388A CN110618388A CN201910833580.5A CN201910833580A CN110618388A CN 110618388 A CN110618388 A CN 110618388A CN 201910833580 A CN201910833580 A CN 201910833580A CN 110618388 A CN110618388 A CN 110618388A
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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
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
- G01R31/387—Determining ampere-hour charge capacity or SoC
- G01R31/388—Determining ampere-hour charge capacity or SoC involving voltage measurements
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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
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
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- General Physics & Mathematics (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Tests Of Electric Status Of Batteries (AREA)
Abstract
The embodiment of the application discloses a method and a device for detecting battery performance, which can acquire actual voltage and corresponding actual current generated by a battery to be detected every preset time from the beginning of discharging, and calculate corresponding discharged actual discharge capacity according to the actual voltage and the corresponding actual current until the sum of the actual discharge capacity meets a preset discharge capacity range. Acquiring standard data corresponding to the actual data, wherein the actual data comprise actual voltages and corresponding actual discharge capacities, and the standard data comprise corresponding standard discharge capacities of normal batteries under each actual voltage; or the standard data comprises a corresponding standard voltage of a normal battery under each actual discharge capacity, wherein the normal battery is the battery of the battery to be tested under the normal condition. Therefore, the performance of the battery to be tested can be determined according to the relation between the actual data and the standard data. The method can more accurately determine the performance of the battery to be tested.
Description
Technical Field
The present application relates to the field of computer technologies, and in particular, to a method and an apparatus for detecting battery performance.
Background
Based on the importance of data, a Battery Backup Unit (BBU) is usually configured in the storage server, and the functions of the BBU may be: when the storage server is in emergency power failure, the BBU supplies power to the server, so that data can be successfully written. As the performance and the capacity of the BBU are gradually reduced along with the continuous use of the BBU, the risk of insufficient power supply to the storage server exists, and therefore, the method has important significance for the performance detection of the BBU.
At present, the capacity of the BBU is mainly estimated by measuring the voltage of the BBU when the BBU is fully charged, and further the performance detection of the BBU is realized. However, because the difference between the voltage of the BBU at the full power and the voltage of the normal BBU at the full power is very small, the performance of the current BBU is difficult to accurately detect only according to the voltage of the BBU at the full power.
Therefore, how to realize accurate performance detection on the BBU is a problem which needs to be solved urgently at present.
Disclosure of Invention
In order to solve the above technical problems, the present application provides a method and an apparatus for detecting battery performance, which can determine the performance of a battery to be detected more accurately.
The embodiment of the application discloses the following technical scheme:
the embodiment of the application provides a method for detecting battery performance, which comprises the following steps:
acquiring actual voltage and corresponding actual current generated by a battery to be tested at preset time intervals from the beginning of discharging, and calculating the corresponding discharged actual discharge capacity according to the actual voltage and the corresponding actual current; until the sum of the actual discharge capacities meets the preset discharge capacity range;
acquiring standard data corresponding to actual data, wherein the actual data comprises the actual voltage and the corresponding actual discharge capacity, and the standard data comprises the corresponding standard discharge capacity of a normal battery under each actual voltage; or the standard data comprises a standard voltage corresponding to a normal battery under each actual discharge capacity, and the normal battery is the battery of the battery to be tested under the normal condition;
and determining the performance of the battery to be tested according to the relation between the actual data and the standard data.
Optionally, if the obtained standard data includes a standard discharge capacity corresponding to each actual voltage of the normal battery; then, the determining the performance of the battery to be tested according to the relationship between the actual data and the standard data includes:
determining the actual discharge capacity as the abnormal discharge capacity when the discharge capacity difference is higher than the discharge capacity threshold according to the discharge capacity difference between the actual discharge capacity corresponding to each actual voltage and the standard discharge capacity;
and if the number of the abnormal discharge capacities is not lower than a preset first abnormal threshold value, determining that the performance of the battery to be tested is abnormal.
Optionally, if the obtained standard data includes a corresponding standard voltage of the normal battery at each actual discharge capacity; then, the determining the performance of the battery to be tested according to the relationship between the actual data and the standard data includes:
determining the actual voltage as an abnormal voltage when the voltage difference value is higher than a voltage threshold value according to the voltage difference value between the actual voltage corresponding to each actual discharge capacity and the standard voltage;
and if the number of the abnormal voltages is not lower than a preset second abnormal threshold value, determining that the performance of the battery to be tested is abnormal.
Optionally, the obtaining of the actual voltage and the corresponding actual current of the battery to be tested at preset time intervals from the beginning of discharging includes:
the method comprises the steps of responding to a received performance detection request for a battery to be detected, and obtaining actual voltage and corresponding actual current of the battery to be detected at preset time intervals from discharging, wherein the performance detection request for the battery to be detected comprises any one of a detection request for the battery to be detected generated in response to user operation or a detection request for the battery to be detected automatically generated under a preset condition.
Optionally, the method further includes:
determining the residual electric capacity of the battery to be tested when the last actual voltage is generated;
and determining the battery capacity of the battery to be tested according to the actual discharge capacity and the residual electric capacity.
Optionally, after determining the battery capacity of the battery to be tested, the method further includes:
and determining the power supply time of the battery to be tested according to the battery capacity and the power of the electrical appliance powered by the battery to be tested.
The embodiment of the application provides a detection device of battery performance, the device includes:
the first obtaining unit is used for obtaining actual voltage and corresponding actual current generated by the battery to be tested at preset time intervals from the beginning of discharging, and calculating the corresponding discharged actual discharge capacity according to the actual voltage and the corresponding actual current; until the sum of the actual discharge capacities meets the preset discharge capacity range;
the second obtaining unit is used for obtaining standard data corresponding to actual data, wherein the actual data comprise actual voltages and corresponding actual discharge capacities, and the standard data comprise corresponding standard discharge capacities of the normal batteries under each actual voltage; or the standard data comprises a standard voltage corresponding to a normal battery under each actual discharge capacity, and the normal battery is the battery of the battery to be tested under the normal condition;
and the first determining unit is used for determining the performance of the battery to be tested according to the relation between the actual data and the standard data.
Optionally, the first determining unit is specifically configured to:
if the acquired standard data comprise the corresponding standard discharge capacity of the normal battery under each actual voltage; determining the actual discharge capacity as the abnormal discharge capacity when the discharge capacity difference is higher than the discharge capacity threshold according to the discharge capacity difference between the actual discharge capacity corresponding to each actual voltage and the standard discharge capacity;
and if the number of the abnormal discharge capacities is not lower than a preset first abnormal threshold value, determining that the performance of the battery to be tested is abnormal.
Optionally, the first determining unit is specifically configured to:
if the acquired standard data comprise corresponding standard voltages of the normal battery under each actual discharge capacity; determining the actual voltage as an abnormal voltage when the voltage difference value is higher than a voltage threshold value according to the voltage difference value between the actual voltage corresponding to each actual discharge capacity and the standard voltage;
and if the number of the abnormal voltages is not lower than a preset second abnormal threshold value, determining that the performance of the battery to be tested is abnormal.
Optionally, the first obtaining unit is specifically configured to:
the method comprises the steps of responding to a received performance detection request for a battery to be detected, and obtaining actual voltage and corresponding actual current of the battery to be detected at preset time intervals from discharging, wherein the performance detection request for the battery to be detected comprises any one of a detection request for the battery to be detected generated in response to user operation or a detection request for the battery to be detected automatically generated under a preset condition.
Optionally, the apparatus further includes a second determining unit, where the second determining unit is configured to:
determining the residual electric capacity of the battery to be tested when the last actual voltage is generated;
and determining the battery capacity of the battery to be tested according to the actual discharge capacity and the residual electric capacity.
Optionally, the second determining unit is further specifically configured to:
after the battery capacity of the battery to be tested is determined, the power supply available time of the battery to be tested is determined according to the battery capacity and the power of an electrical appliance which is powered by the battery to be tested.
According to the technical scheme, the actual voltage and the corresponding actual current of the battery to be tested at preset time intervals from the beginning of discharging can be obtained, and the corresponding discharged actual discharge capacity is calculated according to the actual voltage and the corresponding actual current until the sum of the actual discharge capacities meets the preset discharge capacity range. Acquiring standard data corresponding to the actual data, wherein the actual data comprise actual voltages and corresponding actual discharge capacities, and the standard data comprise corresponding standard discharge capacities of normal batteries under each actual voltage; or the standard data comprises a corresponding standard voltage of a normal battery under each actual discharge capacity, wherein the normal battery is the battery of the battery to be tested under the normal condition. Therefore, the performance of the battery to be tested can be determined according to the relation between the actual data and the standard data. According to the method, the actual data of the battery to be tested in the discharging process is obtained, and the actual data is compared with the standard data of the battery to be tested under the normal condition, so that the performance of the battery to be tested can be more accurately determined. In addition, because the actual voltage and the actual discharge capacity of the battery can better reflect the performance of the battery, the method acquires the corresponding standard discharge capacity of the normal battery under each actual voltage or the corresponding standard voltage of the normal battery under each actual discharge capacity aiming at each actual voltage and corresponding actual discharge capacity of the battery to be tested, and compares the standard voltage with the actual data as the standard data, so that the performance of the battery to be tested can be more accurately determined.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a flowchart of a method for detecting battery performance according to an embodiment of the present disclosure;
fig. 2 is a flowchart of a method for determining performance of a battery to be tested according to an embodiment of the present disclosure;
fig. 3 is a flowchart of a method for determining performance of a battery to be tested according to an embodiment of the present disclosure;
fig. 4 is a schematic diagram illustrating a method for determining a battery capacity of a battery to be tested according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a device for detecting battery performance according to an embodiment of the present disclosure.
Detailed Description
Embodiments of the present application are described below with reference to the accompanying drawings.
At present, the capacity of the BBU is mainly estimated by measuring the voltage of the BBU when the BBU is fully charged, and further the performance detection of the BBU is realized. However, because the difference between the voltage of the BBU at the full power and the voltage of the normal BBU at the full power is very small, the performance of the current BBU is difficult to accurately detect only according to the voltage of the BBU at the full power. Therefore, how to realize accurate performance detection on the BBU is a problem which needs to be solved urgently at present.
Therefore, the embodiment of the application provides a method for detecting battery performance, which comprises the following steps: the actual voltage and the corresponding actual current generated by the battery to be tested at preset time intervals from the beginning of discharging can be obtained, and the corresponding discharged actual discharge capacity is calculated according to the actual voltage and the corresponding actual current until the sum of the actual discharge capacities meets the preset discharge capacity range. Acquiring standard data corresponding to the actual data, wherein the actual data comprise actual voltages and corresponding actual discharge capacities, and the standard data comprise corresponding standard discharge capacities of normal batteries under each actual voltage; or the standard data comprises a corresponding standard voltage of a normal battery under each actual discharge capacity, wherein the normal battery is the battery of the battery to be tested under the normal condition. Therefore, the performance of the battery to be tested can be determined according to the relation between the actual data and the standard data. According to the method, the actual data of the battery to be tested in the discharging process is obtained, and the actual data is compared with the standard data of the battery to be tested under the normal condition, so that the performance of the battery to be tested can be more accurately determined.
In addition, because the actual voltage and the actual discharge capacity of the battery can better reflect the performance of the battery, the method acquires the corresponding standard discharge capacity of the normal battery under each actual voltage or the corresponding standard voltage of the normal battery under each actual discharge capacity aiming at each actual voltage and corresponding actual discharge capacity of the battery to be tested, and compares the standard voltage with the actual data as the standard data, so that the performance of the battery to be tested can be more accurately determined.
The method for detecting the battery performance provided by the embodiment of the application can be applied to performance detection of BBU.
The following describes a method for detecting battery performance according to an embodiment of the present application with reference to the drawings. Referring to fig. 1, the figure shows a flowchart of a method for detecting battery performance provided by an embodiment of the present application, and as shown in fig. 1, the method includes:
s101: acquiring actual voltage and corresponding actual current generated by a battery to be tested at preset time intervals from the beginning of discharging, and calculating the corresponding discharged actual discharge capacity according to the actual voltage and the corresponding actual current; until the sum of the actual discharge capacities satisfies the preset discharge capacity range.
In the embodiment of the application, the actual voltage and the corresponding actual current generated by the battery to be tested at preset time intervals from the beginning of discharging can be obtained. The preset time may be a preset time interval, and in an actual scene, the preset time should be as short as possible, for example, the preset time may be a time not greater than ten thousandth of a second.
And calculating to obtain corresponding actual discharge capacity according to the obtained actual voltage and the corresponding actual current until the sum of the actual discharge capacities meets the preset discharge capacity range. The discharge capacity can be the size of the electric energy discharged, and the actual discharge capacity can be the size of the electric energy discharged by the battery to be tested within the preset time. The preset discharge capacity range may be a preset total discharge capacity range of the battery to be tested, for example: the preset discharge capacity range is 19% -21% of the total capacity of the battery to be tested, so that if the total capacity of the battery to be tested is 1000mAh, the preset discharge range can be 190mAh-210 mAh.
That is to say, during the period from the beginning of the discharge of the battery to be tested to the time when the total discharge capacity discharged by the battery to be tested reaches the preset discharge range, the actual voltage and the corresponding actual current generated by the battery to be tested at preset time intervals from the beginning of the discharge are obtained, and the corresponding discharged actual discharge capacity is obtained by calculation according to the actual voltage and the corresponding actual current. The method for calculating the actual discharge capacity corresponding to the discharge according to the actual voltage and the corresponding actual current may be: and calculating the actual discharge capacity of the battery to be tested at preset time intervals by using the W-UIt. W may be an actual discharge capacity of the battery to be tested at preset time intervals, U may be each obtained actual voltage, I may be each obtained actual current, and t may be a preset time.
The method of S101 is exemplified below.
Assuming that the preset time is 0.0001s and the preset discharge capacity range is 190mAh-210mAh, the actual voltage U and the corresponding actual current I which are discharged by the battery to be tested every 0.0001s are obtained from the beginning of discharging of the battery to be tested until the total discharge capacity discharged by the battery to be tested reaches 190mAh-210mAh, for example, when the discharge capacity (the sum of the calculated actual discharge capacities) discharged by the battery to be tested reaches 210mAh, the actual voltage U and the corresponding actual current I of the battery to be tested are stopped to be obtained. When each actual voltage U and the corresponding actual current I are obtained, the actual discharge capacity W of the battery to be measured at preset time intervals can be calculated by taking W as UIt.
For example, in this process, each set of the actual current, the actual voltage and the actual discharge capacity obtained includes: (U1, I1, W1), (U2, I2, W2), (U3, I3, W3), … …, (Un, In, Wn), it is understood that W1+ W2+ … …, + Wn-Wz should be In the preset discharge capacity range, i.e. 19mAh Wz 21 mAh.
S102: and acquiring standard data corresponding to the actual data.
Wherein the actual data may include the actual voltage and the corresponding actual discharge capacity in S101, for example, the actual data may be (U1, W1), and the standard data may include a corresponding standard discharge capacity of the normal battery at each actual voltage; or the standard data comprises a corresponding standard voltage of a normal battery under each actual discharge capacity, and the normal battery is the battery of the battery to be tested under the normal condition.
In the embodiment of the application, standard data corresponding to actual data can be acquired. For example, the actual data includes: (U1, W1), (U2, W2), (U3, W3), … …, (Un, Wn), then the standard data corresponding to the obtained actual data may include: (U1, W1 '), (U2, W2'), (U3, W3 '), … …, (Un, Wn'), or standard data corresponding to the acquired actual data may include: (U1 ', W1), (U2', W2), (U3 ', W3), … …, (Un', Wn).
S103: and determining the performance of the battery to be tested according to the relation between the actual data and the standard data.
Therefore, the performance of the battery to be tested can be determined based on the relation between the actual data and the standard data.
In a possible implementation manner, if the obtained standard data includes a standard discharge capacity corresponding to each actual voltage of the normal battery, the determination manner of S103 is not limited in the embodiment of the present application; referring to fig. 2, which shows a flowchart of a method for determining performance of a battery to be tested according to an embodiment of the present application, the method for determining performance of a battery to be tested according to a relationship between actual data and standard data in S103 may include:
s201: and determining the actual discharge capacity as the abnormal discharge capacity when the discharge capacity difference is higher than the discharge capacity threshold according to the discharge capacity difference between the actual discharge capacity corresponding to each actual voltage and the standard discharge capacity.
In this embodiment, a discharge capacity threshold may be preset, where the discharge capacity threshold may be a threshold used to identify whether a discharge capacity difference between an actual discharge capacity and a normal discharge capacity is normal. Then, based on each actual data, the actual discharge capacity when the discharge capacity difference is higher than the discharge capacity threshold may be determined as the abnormal discharge capacity according to the discharge capacity difference between the actual discharge capacity corresponding to each actual voltage and the standard discharge capacity.
For example, the threshold of the discharge capacity is set to be 1mAh, assuming that the actual discharge capacity corresponding to an actual voltage is 10mAh and the normal discharge capacity corresponding to the actual voltage is 12mAh, the difference between the actual discharge capacity and the normal discharge capacity is 2mAh, and if the difference is higher than the threshold of the discharge capacity, the actual discharge capacity belongs to the abnormal discharge capacity.
S202: and if the number of the abnormal discharge capacities is not lower than a preset first abnormal threshold value, determining that the performance of the battery to be tested is abnormal.
A first abnormal threshold may be preset, and the first abnormal threshold may be a threshold for measuring whether the performance of the battery to be tested is abnormal based on the number of abnormal discharge capacities. When the number of the abnormal discharge capacities is not lower than a preset first abnormal threshold value, the performance of the battery to be tested is indicated to be abnormal, and when the number of the abnormal discharge capacities is lower than the preset first abnormal threshold value, the performance of the battery to be tested is indicated to be normal.
And if the number of the abnormal discharge capacities is not lower than a preset first abnormal threshold value, determining that the performance of the battery to be tested is abnormal.
In a specific implementation, the first abnormality threshold may be 1, that is, for the actual data, as long as the abnormal discharge capacity is included, the performance of the battery under test is considered to be abnormal.
In a possible implementation manner, if the acquired standard data includes a corresponding standard voltage of a normal battery at each actual discharge capacity; referring to fig. 3, which shows a flowchart of a method for determining performance of a battery to be tested according to an embodiment of the present application, the method for determining performance of a battery to be tested according to a relationship between actual data and standard data in S103 may include:
s301: and determining the actual voltage as the abnormal voltage when the voltage difference value is higher than the voltage threshold value according to the voltage difference value between the actual voltage corresponding to each actual discharge capacity and the standard voltage.
In this embodiment, a voltage threshold may be preset, where the voltage threshold may be a threshold used to identify whether a voltage difference between an actual voltage and a normal voltage is normal. Then, based on each actual data, the actual voltage when the voltage difference is higher than the voltage threshold may be determined as the abnormal voltage according to the voltage difference between the actual voltage corresponding to each actual discharge capacity and the standard voltage.
For example, the voltage threshold is set to be 0.5V, and if the actual voltage corresponding to one actual discharge capacity is 5V and the normal voltage corresponding to the actual discharge capacity is 5.8V, the difference between the actual voltage and the normal voltage is 0.8V, and if the difference is higher than the voltage threshold, the actual voltage is an abnormal voltage.
S302: and if the number of the abnormal voltages is not lower than a preset second abnormal threshold value, determining that the performance of the battery to be tested is abnormal.
A second abnormal threshold may be preset, and the second abnormal threshold may be a threshold for measuring whether the performance of the battery to be tested is abnormal. When the number of the abnormal voltages is not lower than a preset second abnormal threshold, the performance of the battery to be tested is abnormal, and when the number of the abnormal voltages is lower than the preset second abnormal threshold, the performance of the battery to be tested is normal.
And if the number of the abnormal voltages is not lower than a preset second abnormal threshold, determining that the performance of the battery to be tested is abnormal.
In a specific implementation, the second abnormal threshold may be 1, that is, for the actual data, as long as the abnormal voltage is included, the performance of the battery under test is considered to be abnormal.
In addition, the size relationship between the first anomaly threshold and the second anomaly threshold is not limited in the embodiment of the application, and the first anomaly threshold and the second anomaly threshold can be correspondingly set according to an actual scene.
In this embodiment of the application, the method for acquiring the actual voltage and the corresponding actual current generated by the battery to be tested every preset time from the beginning of discharging in S101 may include:
the method can respond to the received performance detection request of the battery to be detected, and further acquire the actual voltage and the corresponding actual current of the battery to be detected at preset time intervals from the beginning of discharging.
The performance detection request for the battery to be detected may include any one of a detection request generated in response to a user operation or a detection request automatically generated in a preset case.
That is, the battery performance detection method may be performed in response to a performance detection request for the battery under test generated by a user operation or a performance detection request for the battery under test automatically generated in a preset case.
When a user starts a function of detecting the performance of the battery to be detected, the user can respond to the user operation to generate a performance detection request of the battery to be detected, and then respond to the detection request to execute the method for detecting the performance of the battery. Therefore, the function of detecting the performance of the battery to be detected is conveniently started by the operation and maintenance personnel, and the operation and maintenance efficiency of the operation and maintenance personnel is improved.
In addition, the preset condition may include: the situation that a preset timing moment is reached, or the situation that the voltage of the battery to be tested is changed too much, the voltage of the battery to be tested is reduced faster or a server powered by the battery to be tested is idle.
That is to say, a performance detection request for the battery to be detected may be automatically generated at regular time, and when the timing time is reached, the performance detection request for the battery to be detected may be generated, and then the detection method for the battery performance in the embodiment of the present application may be executed, or when it is detected that the voltage change of the battery to be detected is too large, the voltage of the battery to be detected drops fast, or an electrical appliance powered by the battery to be detected is idle, the performance detection request for the battery to be detected may be automatically generated, and then the detection method for the battery performance provided in the embodiment of the present application may be executed. Therefore, the performance of the battery to be tested is detected by detecting whether the current environment meets the preset condition (if the current environment meets the idle condition of the server), and when the preset condition is met (if the server powered by the battery to be tested is idle), the normal operation of the server is not influenced.
In specific implementation, the function of detecting the performance of the battery to be detected can be manually started for a user, and the function of detecting the performance of the battery to be detected can be automatically started under a preset condition, so that the performance detection requests of the battery to be detected can be generated.
In this embodiment of the present application, the battery capacity of the battery to be tested may also be measured, referring to fig. 4, which shows a schematic diagram of a method for determining the battery capacity of the battery to be tested, provided in this embodiment of the present application, where the method further includes:
s401: and determining the residual capacity of the battery to be tested when the last actual voltage is generated.
S402: and determining the battery capacity of the battery to be tested according to the actual discharge capacity and the residual electric capacity.
In the embodiment of the application, the residual capacity of the battery to be tested can be displayed in real time, so that the residual capacity of the battery to be tested when the last actual voltage is generated can be determined.
Then, the total discharge capacity of the battery to be tested when the last actual voltage is generated can be calculated according to each actual discharge capacity, and the battery capacity of the battery to be tested is determined by calculating the sum of the total discharge capacity and the residual electric capacity.
Because the displayed residual capacity of the battery to be tested has a certain error, the battery capacity of the battery to be tested is obtained by calculating according to the total discharge capacity discharged by the battery to be tested and the displayed residual capacity of the battery to be tested, so that the error can be reduced, and the more accurate battery capacity of the battery to be tested can be obtained.
In addition, after determining the battery capacity of the battery to be tested, the method further comprises:
and determining the power supply available time of the battery to be tested according to the battery capacity and the power of the electrical appliance powered by the battery to be tested. In a particular implementation, t ═ W may be passedGeneral assemblyand/P, calculating to obtain the power supply time of the battery to be tested. Wherein t' can be the available power supply time of the battery to be tested to the electrical appliance, WGeneral assemblyThe battery capacity of the battery to be tested can be used, and P can be the power of an electrical appliance powered by the battery to be tested.
By the method, the power supply time of the battery to be tested can be conveniently obtained.
In specific implementation, the management program can be set in the battery management unit to execute the method provided by the embodiment of the application, and after the execution is finished, one or more of the performance state, the battery capacity and the power supply time of the battery to be tested can be returned to the management program and a report can be generated, so that a user can visually know each state of the battery to be tested, determine whether to replace the battery to be tested and the like, and further improve the safety of the system.
In addition, the performance of the battery to be detected is mainly detected manually and periodically at present, the workload is high, the efficiency is low, the battery performance detection method provided by the application can be started manually or automatically according to operation and maintenance personnel, the detection of the battery to be detected can be completed by executing a corresponding program, the workload is greatly reduced, and the operation and maintenance efficiency is effectively improved.
Based on the foregoing provided method for detecting battery performance, an embodiment of the present application further provides a device for detecting battery performance, and referring to fig. 5, the figure shows a schematic structural diagram of the device for detecting battery performance provided in the embodiment of the present application, where the device includes:
a first obtaining unit 501, configured to obtain an actual voltage and a corresponding actual current generated by the battery to be tested at preset time intervals from the beginning of discharging, and calculate a corresponding discharged actual discharge capacity according to the actual voltage and the corresponding actual current; until the sum of the actual discharge capacities meets the preset discharge capacity range;
a second obtaining unit 502, configured to obtain standard data corresponding to actual data, where the actual data includes actual voltages and corresponding actual discharge capacities, and the standard data includes corresponding standard discharge capacities of normal batteries at each actual voltage; or the standard data comprises a standard voltage corresponding to a normal battery under each actual discharge capacity, and the normal battery is the battery of the battery to be tested under the normal condition;
a first determining unit 503, configured to determine the performance of the battery to be tested according to a relationship between the actual data and the standard data.
Optionally, the first determining unit 503 is specifically configured to:
if the acquired standard data comprise the corresponding standard discharge capacity of the normal battery under each actual voltage; determining the actual discharge capacity as the abnormal discharge capacity when the discharge capacity difference is higher than the discharge capacity threshold according to the discharge capacity difference between the actual discharge capacity corresponding to each actual voltage and the standard discharge capacity;
and if the number of the abnormal discharge capacities is not lower than a preset first abnormal threshold value, determining that the performance of the battery to be tested is abnormal.
Optionally, the first determining unit 503 is specifically configured to:
if the acquired standard data comprise corresponding standard voltages of the normal battery under each actual discharge capacity; determining the actual voltage as an abnormal voltage when the voltage difference value is higher than a voltage threshold value according to the voltage difference value between the actual voltage corresponding to each actual discharge capacity and the standard voltage;
and if the number of the abnormal voltages is not lower than a preset second abnormal threshold value, determining that the performance of the battery to be tested is abnormal.
Optionally, the first obtaining unit 501 is specifically configured to:
the method comprises the steps of responding to a received performance detection request for a battery to be detected, and obtaining actual voltage and corresponding actual current of the battery to be detected at preset time intervals from discharging, wherein the performance detection request for the battery to be detected comprises any one of a detection request for the battery to be detected generated in response to user operation or a detection request for the battery to be detected automatically generated under a preset condition.
Optionally, the apparatus further includes a second determining unit, where the second determining unit is configured to:
determining the residual electric capacity of the battery to be tested when the last actual voltage is generated;
and determining the battery capacity of the battery to be tested according to the actual discharge capacity and the residual electric capacity.
Optionally, the second determining unit is further specifically configured to:
after the battery capacity of the battery to be tested is determined, the power supply available time of the battery to be tested is determined according to the battery capacity and the power of an electrical appliance using the battery to be tested to supply power
According to the technical scheme, the actual voltage and the corresponding actual current of the battery to be tested at preset time intervals from the beginning of discharging can be obtained, and the corresponding discharged actual discharge capacity is calculated according to the actual voltage and the corresponding actual current until the sum of the actual discharge capacities meets the preset discharge capacity range. Acquiring standard data corresponding to the actual data, wherein the actual data comprise actual voltages and corresponding actual discharge capacities, and the standard data comprise corresponding standard discharge capacities of normal batteries under each actual voltage; or the standard data comprises a corresponding standard voltage of a normal battery under each actual discharge capacity, wherein the normal battery is the battery of the battery to be tested under the normal condition. Therefore, the performance of the battery to be tested can be determined according to the relation between the actual data and the standard data. According to the method, the actual data of the battery to be tested in the discharging process is obtained, and the actual data is compared with the standard data of the battery to be tested under the normal condition, so that the performance of the battery to be tested can be more accurately determined.
In addition, because the actual voltage and the actual discharge capacity of the battery can better reflect the performance of the battery, the method acquires the corresponding standard discharge capacity of the normal battery under each actual voltage or the corresponding standard voltage of the normal battery under each actual discharge capacity aiming at each actual voltage and corresponding actual discharge capacity of the battery to be tested, and compares the standard voltage with the actual data as the standard data, so that the performance of the battery to be tested can be more accurately determined.
Those of ordinary skill in the art will understand that: all or part of the steps for realizing the method embodiments can be completed by hardware related to program instructions, the program can be stored in a computer readable storage medium, and the program executes the steps comprising the method embodiments when executed; and the aforementioned storage medium may be at least one of the following media: various media that can store program codes, such as read-only memory (ROM), RAM, magnetic disk, or optical disk.
It should be noted that, in the present specification, all the embodiments are described in a progressive manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the apparatus and system embodiments, since they are substantially similar to the method embodiments, they are described in a relatively simple manner, and reference may be made to some of the descriptions of the method embodiments for related points. The above-described embodiments of the apparatus and system are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The above description is only one specific embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (12)
1. A method for detecting battery performance, the method comprising:
acquiring actual voltage and corresponding actual current generated by a battery to be tested at preset time intervals from the beginning of discharging, and calculating the corresponding discharged actual discharge capacity according to the actual voltage and the corresponding actual current; until the sum of the actual discharge capacities meets the preset discharge capacity range;
acquiring standard data corresponding to actual data, wherein the actual data comprises the actual voltage and the corresponding actual discharge capacity, and the standard data comprises the corresponding standard discharge capacity of a normal battery under each actual voltage; or the standard data comprises a standard voltage corresponding to a normal battery under each actual discharge capacity, and the normal battery is the battery of the battery to be tested under the normal condition;
and determining the performance of the battery to be tested according to the relation between the actual data and the standard data.
2. The method of claim 1, wherein if the obtained standard data includes a standard discharge capacity corresponding to a normal battery at each actual voltage; then, the determining the performance of the battery to be tested according to the relationship between the actual data and the standard data includes:
determining the actual discharge capacity as the abnormal discharge capacity when the discharge capacity difference is higher than the discharge capacity threshold according to the discharge capacity difference between the actual discharge capacity corresponding to each actual voltage and the standard discharge capacity;
and if the number of the abnormal discharge capacities is not lower than a preset first abnormal threshold value, determining that the performance of the battery to be tested is abnormal.
3. The method of claim 1, wherein if the obtained standard data comprises a corresponding standard voltage of a normal battery at each actual discharge capacity; then, the determining the performance of the battery to be tested according to the relationship between the actual data and the standard data includes:
determining the actual voltage as an abnormal voltage when the voltage difference value is higher than a voltage threshold value according to the voltage difference value between the actual voltage corresponding to each actual discharge capacity and the standard voltage;
and if the number of the abnormal voltages is not lower than a preset second abnormal threshold value, determining that the performance of the battery to be tested is abnormal.
4. The method according to any one of claims 1 to 3, wherein the obtaining of the actual voltage and the corresponding actual current generated by the battery to be tested at preset time intervals from the beginning of discharging comprises:
the method comprises the steps of responding to a received performance detection request for a battery to be detected, and obtaining actual voltage and corresponding actual current of the battery to be detected at preset time intervals from discharging, wherein the performance detection request for the battery to be detected comprises any one of a detection request for the battery to be detected generated in response to user operation or a detection request for the battery to be detected automatically generated under a preset condition.
5. The method according to any one of claims 1-3, further comprising:
determining the residual electric capacity of the battery to be tested when the last actual voltage is generated;
and determining the battery capacity of the battery to be tested according to the actual discharge capacity and the residual electric capacity.
6. The method of claim 5, wherein after determining the battery capacity of the battery under test, the method further comprises:
and determining the power supply time of the battery to be tested according to the battery capacity and the power of the electrical appliance powered by the battery to be tested.
7. An apparatus for detecting battery performance, the apparatus comprising:
the first obtaining unit is used for obtaining actual voltage and corresponding actual current generated by the battery to be tested at preset time intervals from the beginning of discharging, and calculating the corresponding discharged actual discharge capacity according to the actual voltage and the corresponding actual current; until the sum of the actual discharge capacities meets the preset discharge capacity range;
the second obtaining unit is used for obtaining standard data corresponding to actual data, wherein the actual data comprise actual voltages and corresponding actual discharge capacities, and the standard data comprise corresponding standard discharge capacities of the normal batteries under each actual voltage; or the standard data comprises a standard voltage corresponding to a normal battery under each actual discharge capacity, and the normal battery is the battery of the battery to be tested under the normal condition;
and the first determining unit is used for determining the performance of the battery to be tested according to the relation between the actual data and the standard data.
8. The apparatus according to claim 7, wherein the first determining unit is specifically configured to:
if the acquired standard data comprise the corresponding standard discharge capacity of the normal battery under each actual voltage; determining the actual discharge capacity as the abnormal discharge capacity when the discharge capacity difference is higher than the discharge capacity threshold according to the discharge capacity difference between the actual discharge capacity corresponding to each actual voltage and the standard discharge capacity;
and if the number of the abnormal discharge capacities is not lower than a preset first abnormal threshold value, determining that the performance of the battery to be tested is abnormal.
9. The apparatus according to claim 7, wherein the first determining unit is specifically configured to:
if the acquired standard data comprise corresponding standard voltages of the normal battery under each actual discharge capacity; determining the actual voltage as an abnormal voltage when the voltage difference value is higher than a voltage threshold value according to the voltage difference value between the actual voltage corresponding to each actual discharge capacity and the standard voltage;
and if the number of the abnormal voltages is not lower than a preset second abnormal threshold value, determining that the performance of the battery to be tested is abnormal.
10. The apparatus according to any one of claims 7 to 9, wherein the first obtaining unit is specifically configured to:
the method comprises the steps of responding to a received performance detection request for a battery to be detected, and obtaining actual voltage and corresponding actual current of the battery to be detected at preset time intervals from discharging, wherein the performance detection request for the battery to be detected comprises any one of a detection request for the battery to be detected generated in response to user operation or a detection request for the battery to be detected automatically generated under a preset condition.
11. The apparatus according to any of claims 7-9, further comprising a second determining unit configured to:
determining the residual electric capacity of the battery to be tested when the last actual voltage is generated;
and determining the battery capacity of the battery to be tested according to the actual discharge capacity and the residual electric capacity.
12. The apparatus according to claim 11, wherein the second determining unit is further specifically configured to:
after the battery capacity of the battery to be tested is determined, the power supply available time of the battery to be tested is determined according to the battery capacity and the power of an electrical appliance which is powered by the battery to be tested.
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