CN112098864A - Leakage current detection method and device, electronic equipment and storage medium - Google Patents
Leakage current detection method and device, electronic equipment and storage medium Download PDFInfo
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- CN112098864A CN112098864A CN202011023102.7A CN202011023102A CN112098864A CN 112098864 A CN112098864 A CN 112098864A CN 202011023102 A CN202011023102 A CN 202011023102A CN 112098864 A CN112098864 A CN 112098864A
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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
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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
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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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- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
Abstract
The application relates to a leakage current detection method, a leakage current detection device, electronic equipment and a storage medium, wherein when the electronic equipment where a battery is located is connected with an adapter, the electronic equipment determines whether the battery reaches a full charge state at the current moment; under the condition that the battery reaches the full charge state, judging whether the battery has a voltage stabilization event at the subsequent moment after the battery reaches the full charge state; if the battery has a voltage stabilization event, determining that the battery does not have leakage current; wherein, the voltage stabilization condition represents that the voltage of the battery is stabilized within a preset range. By adopting the method, the leakage current detection accuracy of the battery can be improved, the battery state can be predicted in advance under the condition of ensuring the user experience, and the faults of fire and the like caused by overlarge leakage current of the battery are avoided.
Description
Technical Field
The present disclosure relates to the field of battery technologies, and in particular, to a leakage current detection method and apparatus, an electronic device, and a storage medium.
Background
The safety of the battery is an important factor influencing the safety of electronic equipment such as mobile phones and the like. Generally, the use of the battery in the electronic equipment is monitored by the protection board, including monitoring the performances of overcharge and overdischarge, overvoltage and overcurrent, temperature and the like of the battery, so that the use safety of the electronic equipment can be ensured. However, the protection plate cannot detect the leakage current inside the battery, and when the leakage current is large to a certain extent, the battery may generate a large amount of heat inside the battery, which may cause thermal runaway and fire of the battery.
In the traditional method, the electronic equipment can acquire the charging electric quantity and the charging duration of the battery in the charging process, and then calculate the leakage current value of the battery, so that whether the battery is qualified in leakage current detection is judged according to the size of the leakage current value.
However, the method is easy to cause misjudgment, so that the leakage current detection is inaccurate.
Disclosure of Invention
In view of the above, it is necessary to provide a leakage current detection method, a leakage current detection device, an electronic apparatus, and a storage medium, which can improve the detection accuracy of the leakage current.
A method for detecting leakage current, the method comprising:
determining whether the battery reaches a full charge state at the current moment; at the current moment, the electronic equipment where the battery is located and the adapter are in a connection state;
if yes, judging whether the battery has a voltage stabilization event at the subsequent moment after the battery reaches the full charge state; wherein the voltage stabilization condition represents that the voltage of the battery is stabilized within a preset range;
and if so, determining that the battery has no leakage current.
In one embodiment, the determining whether the battery has a voltage stabilization event at a subsequent time after the battery reaches the full charge state includes:
acquiring the charging completion time when the battery reaches a full-charge state;
acquiring the voltage stabilization duration of the battery after the battery reaches a full charge state;
and after delaying the voltage stabilization duration at the charging completion time, judging whether the battery has a voltage stabilization event or not.
In one embodiment, the determining whether the battery has a voltage stabilization event includes:
collecting the battery voltage of the battery at least two moments, and determining the variation amplitude of the battery voltage at the at least two moments;
judging whether the variation amplitude meets a preset voltage stabilization condition or not;
if yes, determining that the battery has a voltage stabilization event.
In one embodiment, the determining whether the variation amplitude satisfies a preset voltage stability condition includes:
and if the variation amplitude is smaller than the preset threshold value, determining that the variation amplitude meets the preset voltage stability condition.
In one embodiment, the determining whether the variation amplitude satisfies a preset voltage stability condition includes:
determining the duration of the voltage transformation amplitude of the battery voltage being smaller than a preset threshold value;
and if the duration is longer than the preset duration threshold, determining that the variation amplitude meets the preset voltage stability condition.
In one embodiment, the method further includes:
and within a preset detection time after the battery reaches the full charge state, if the battery does not have a voltage stabilization event, stopping leakage current detection.
In one embodiment, before collecting the battery voltage of the battery at least two moments, the method further includes:
and detecting whether the electronic equipment is in a connection state with the adapter, and if so, executing a step of collecting the battery voltage of the battery.
In one embodiment, the obtaining the voltage stabilization duration of the battery after reaching the full charge state includes:
acquiring an aging degree parameter of the battery;
determining voltage stabilization duration corresponding to the aging degree parameter according to a preset corresponding relation; the preset corresponding relation comprises voltage stabilization duration corresponding to different aging degree parameters.
In one embodiment, the obtaining the parameter of the degree of aging of the battery includes:
after the battery reaches the full charge state, acquiring the current battery capacity of the battery;
and comparing the current battery capacity with the preset initial battery capacity to determine the aging degree parameter of the battery.
In one embodiment, the method further includes:
and if the battery has no voltage stabilization event, outputting battery leakage current early warning information.
A leakage current detection device, said device comprising:
the first determination module is used for determining whether the battery reaches a full charge state at the current moment; at the current moment, the electronic equipment where the battery is located and the adapter are in a connection state;
the judging module is used for judging whether a voltage stabilization event exists in the battery at the subsequent moment after the battery reaches the full charge state under the condition that the battery reaches the full charge state; wherein the voltage stabilization condition represents that the voltage of the battery is stabilized within a preset range;
and the second determination module is used for determining that the battery does not have leakage current under the condition that the battery has a voltage stabilization event.
An electronic device comprising a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:
determining whether the battery reaches a full charge state at the current moment; at the current moment, the electronic equipment where the battery is located and the adapter are in a connection state;
if yes, judging whether the battery has a voltage stabilization event at the subsequent moment after the battery reaches the full charge state; wherein the voltage stabilization condition represents that the voltage of the battery is stabilized within a preset range;
and if so, determining that the battery has no leakage current.
A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, carries out the steps of:
determining whether the battery reaches a full charge state at the current moment; at the current moment, the electronic equipment where the battery is located and the adapter are in a connection state;
if yes, judging whether the battery has a voltage stabilization event at the subsequent moment after the battery reaches the full charge state; wherein the voltage stabilization condition represents that the voltage of the battery is stabilized within a preset range;
and if so, determining that the battery has no leakage current.
According to the leakage current detection method, the leakage current detection device, the electronic equipment and the storage medium, when the electronic equipment where the battery is located is connected with the adapter, the electronic equipment determines whether the battery reaches a full charge state at the current moment; under the condition that the battery reaches the full charge state, judging whether the battery has a voltage stabilization event at the subsequent moment after the battery reaches the full charge state; if the battery has a voltage stabilization event, determining that the battery does not have leakage current; wherein, the voltage stabilization condition represents that the voltage of the battery is stabilized within a preset range. When the electronic equipment where the battery is located is connected with the adapter, the adapter supplies power to the electronic equipment, and the battery stops supplying power to the outside. When the battery reaches a fully charged state, the voltage of the battery with leakage current will continue to drop, and for the battery without leakage current, the voltage will reach a steady state, i.e., there is a voltage stabilization event. According to the method and the device, whether the voltage stabilization event exists in the battery at the subsequent moment is judged under the condition that the battery reaches the full charge state, so that whether the leakage current exists in the battery can be accurately judged, and misjudgment is avoided; furthermore, the electronic equipment can predict the battery state in advance under the condition of guaranteeing user experience, and faults such as ignition and the like caused by overlarge leakage current of the battery are avoided.
Drawings
FIG. 1 is a diagram of an exemplary embodiment of a leakage current detection method;
FIG. 2 is a flow chart illustrating a leakage current detection method according to an embodiment;
FIG. 3 is a flow chart illustrating a leakage current detection method according to another embodiment;
FIG. 4 is a diagram illustrating a leakage current detection method according to an embodiment;
FIG. 5 is a flow chart illustrating a leakage current detection method according to another embodiment;
FIG. 6 is a flow chart illustrating a leakage current detection method according to another embodiment;
FIG. 7 is a diagram illustrating a leakage current detection method according to another embodiment;
FIG. 8 is a flow chart illustrating a leakage current detection method according to another embodiment;
FIG. 9 is a block diagram of the structure of a leakage current detecting device in one embodiment;
FIG. 10 is a block diagram showing the structure of a leakage current detecting device according to another embodiment;
FIG. 11 is a block diagram showing the structure of a leakage current detecting device according to another embodiment;
FIG. 12 is a block diagram showing the structure of a leakage current detecting device according to another embodiment;
FIG. 13 is a block diagram showing the structure of a leakage current detecting device according to another embodiment;
FIG. 14 is a diagram illustrating an internal structure of a computer device according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The leakage current detection method provided by the application can be applied to the application environment shown in fig. 1. The electronic device 100 includes a battery 200 therein, and the battery 200 can be charged through the adapter 300. The electronic device 100 may be a wireless terminal, which may be a device that provides voice and/or other traffic data connectivity to a user, a handheld device having wireless connection capability, or other processing device connected to a wireless modem. The wireless terminal may be a mobile terminal such as a cellular phone and a computer having a mobile terminal, for example, a mobile device which may be portable, pocket, hand-held, computer-included or vehicle-mounted, etc. The electronic device 100 may also be a notebook computer, an unmanned aerial vehicle, a tablet computer, an electronic book, an electronic cigarette, an intelligent appliance, etc., and the type of the electronic device 100 is not limited herein. The battery 200 may be a lithium battery, a nickel metal hydride battery, or the like; the adapter 300 may be a wired adapter, or may be a wireless charging cradle, and the type of the adapter 300 is not limited herein. The adaptor 300 may be communicatively coupled to the electronic device 100.
The leakage current is self-discharge generated in a current loop inside the battery when the battery is not connected with an external load, and current is consumed inside the battery. When the leakage current is small, the capacity of the battery is easily lost, namely the battery can release 4000mAh, but the capacity value used in the actual use process may be only 3800 mAh; when the leakage current is large to a certain extent, for example, the current value of the leakage current in the battery is above 1A, a large amount of heat may be generated inside the battery, and even reactions such as violent reaction inside the battery, electrolyte consumption, aggravation of redox reaction, oxygen release for combustion supporting, and the like may be caused, resulting in thermal runaway and ignition of the battery. Therefore, it is necessary to provide a method capable of accurately detecting the leakage current of the battery.
In one embodiment, as shown in fig. 2, a leakage current detection method is provided, which is described by taking the method as an example applied to the electronic device in fig. 1, and includes:
s101, determining whether the battery reaches a full charge state at the current moment; at the current moment, the electronic device where the battery is located and the adapter are in a connected state.
When the adapter is connected to the electronic device, the battery in the electronic device will no longer power the electronic device, but the adapter will power the electronic device based on the charging logic. The electronic device may first determine whether the battery reaches a full charge state at the present time, so as to perform leakage current detection on the battery in the full charge state.
Specifically, the electronic device can monitor the charging state of the battery in real time, and start to perform leakage detection on the battery after the battery reaches a full charge state; alternatively, the electronic device may determine whether the battery reaches a full charge state at a predetermined time. For example, when the electronic device is a mobile terminal, many users choose to charge the mobile terminal at night, and then the charging duration of the mobile terminal does not need to be the whole night; the electronic device may set a certain time in the morning as a preset time, and determine whether the battery reaches a full charge state at the preset time.
The electronic device may determine whether the battery has reached a full charge state by reading the remaining battery amount, for example, the electronic device may consider that the battery has reached the full charge state when the remaining battery amount of the electronic device is 100%. Alternatively, the electronic device may determine whether the full charge state is reached based on the magnitude of the charging current of the battery. For the constant-current constant-voltage charging mode, the adapter charges the battery with a constant current, and when the voltage of the battery reaches the cut-off voltage, the adapter charges the battery with the constant voltage until the charging current of the battery reaches the cut-off current, and the cut-off current may be 0A theoretically. The electronic device may compare the collected charging current with a preset cutoff current, and when the charging current is less than the cutoff current, the electronic device may consider that the battery is in a full charge state. The determination method of the full charge state is not limited herein.
In addition, the electronic device may further determine whether the battery reaches the full charge state according to the charging duration, for example, the duration required for charging the battery is fixed, and the electronic device may determine whether the battery reaches the full charge state at the current time according to the time when the adapter is connected to the electronic device and the duration required for charging the battery.
S102, if yes, judging whether the battery has a voltage stabilization event at a subsequent moment after the battery reaches a full charge state; wherein, the voltage stabilization condition represents that the voltage of the battery is stabilized within a preset range.
After determining that the battery reaches the full charge state, the electronic device may begin leakage current detection of the battery. The electronic device may determine whether a voltage stabilization event exists with the battery at a subsequent time when the battery reaches a fully charged state.
The subsequent time when the battery reaches the full charge state may be a time period when the battery reaches the full charge state and the electronic device and the adapter are in the connection state. The time period may be a fixed-duration time period, for example, the electronic device may determine whether a voltage stabilization event exists in the battery within two hours after the battery reaches a full charge state; in addition, the duration of the time period may vary with the connection state of the electronic device and the adapter, and the electronic device may continuously determine whether a voltage stabilization event exists in the battery after the battery reaches the full charge state until the electronic device is disconnected from the adapter.
The voltage stabilization event may be used to characterize the voltage stabilization of the battery within a predetermined range. When the battery reaches a fully charged state, the voltage of the battery with leakage current will continue to drop, and for the battery without leakage current, the voltage will reach a steady state, i.e., there is a voltage stabilization event. The voltage stabilization event means that the voltage of the battery is stabilized and unchanged and is maintained at a fixed value; alternatively, the voltage stabilization event may refer to that the voltage of the battery fluctuates within a preset range, for example, the nominal voltage of the battery is 5V, and when the voltage of the battery fluctuates between 4.95V and 5.05V, the electronic device may consider that the voltage of the battery is stable, and the voltage stabilization event exists.
Specifically, the electronic device may determine whether a voltage stabilization event exists in the battery according to the voltage of the battery. The electronic device can determine whether the voltage value is stable within a preset range according to the collected multiple voltage values.
And S103, if the leakage current exists, determining that the battery does not have the leakage current.
If a voltage stabilization event exists for the battery, the electronic device may determine that there is no leakage current for the battery. Further, the electronic device may determine that the leakage current detection result is that the battery leakage current detection is qualified, and store a leakage current detection log.
If the electronic device determines that the voltage of the battery is not stabilized within the preset range, for example, the voltage of the battery continuously decreases, so that the voltage of the battery exceeds the preset range after a certain time, the electronic device may determine that the voltage of the battery is unstable, and determine that the battery has a leakage current. Further, the electronic device may determine that the leakage current detection result is that the leakage current detection is not qualified, and store a leakage current detection log. Optionally, the electronic device may output the battery leakage current warning information after determining that the battery does not have the voltage stabilization event. The current early warning information can be displayed to a user through system information, and battery leakage current early warning can be carried out through a battery state interface.
According to the leakage current detection method, when the electronic equipment where the battery is located is connected with the adapter, the electronic equipment determines whether the battery reaches a full charge state at the current moment; under the condition that the battery reaches the full charge state, judging whether the battery has a voltage stabilization event at the subsequent moment after the battery reaches the full charge state; if the battery has a voltage stabilization event, determining that the battery does not have leakage current; wherein, the voltage stabilization condition represents that the voltage of the battery is stabilized within a preset range. When the electronic equipment where the battery is located is connected with the adapter, the adapter supplies power to the electronic equipment, and the battery stops supplying power to the outside. When the battery reaches a fully charged state, the voltage of the battery with leakage current will continue to drop, and for the battery without leakage current, the voltage will reach a steady state, i.e., there is a voltage stabilization event. According to the method and the device, whether the voltage stabilization event exists in the battery at the subsequent moment is judged under the condition that the battery reaches the full charge state, so that whether the leakage current exists in the battery can be accurately judged, and misjudgment is avoided; furthermore, the electronic equipment can predict the battery state in advance under the condition of guaranteeing user experience, and faults such as ignition and the like caused by overlarge leakage current of the battery are avoided.
Fig. 3 is a schematic flowchart of a leakage current detection method in another embodiment, where the embodiment relates to a manner of determining whether a voltage stabilization event exists in a battery by an electronic device, and on the basis of the above embodiment, as shown in fig. 3, the above step S102 includes:
s201, acquiring the charging completion time when the battery reaches the full charge state.
The charging completion time may be a time when the charging capacity of the battery reaches 100%, or a time when the charging current of the battery is less than or equal to a preset cutoff current. The electronic equipment can monitor the charging state in real time, and record the charging completion moment when the battery reaches the full-charge state.
S202, acquiring the voltage stabilization duration of the battery after the battery reaches the full charge state.
Generally, after the battery reaches the full charge state, the charging current does not reach the theoretical cutoff current 0A in the full charge state due to the internal resistance generated during charging, so that the voltage of the battery decreases by a certain extent after the battery reaches the full charge state, and then reaches the steady state. The process of the voltage reaching the steady state is the voltage stabilization duration of the battery. The voltage stabilization period is generally fixed for the same type of battery. The staff can determine the voltage stabilization duration of the battery of the model by collecting the duration required by the voltage drop of the batteries of the same batch, and store the duration in the electronic device in advance, for example, the staff can measure 100 batteries, wherein the voltage stabilization durations of 80 batteries are all about 5 minutes, and then the duration can be determined as the voltage stabilization duration of the battery of the model.
When the electronic equipment detects the leakage current of the battery, the voltage stabilization duration can be obtained by reading the parameters stored in the electronic equipment. In addition, the voltage stabilization duration of the battery can also be related to parameters such as the aging degree of the battery, the service life of the battery, and the like, and the electronic equipment can also determine more accurate voltage stabilization duration according to the parameters.
S203, after the voltage stabilization duration is delayed at the moment of finishing charging, whether the battery has a voltage stabilization event or not is judged.
And on the basis of the steps, after delaying the voltage stabilization time at the charging completion moment, judging whether the battery has a voltage stabilization event or not. As shown in fig. 4, if the battery reaches the full charge state at time t1 and the voltage stabilization duration of the battery is t, the electronic device may start to perform the leakage current detection of the battery at time t2 equal to t1+ t to determine whether the voltage stabilization duration of the battery exists.
According to the leakage current detection method, after the electronic equipment delays the voltage stabilization duration at the charging completion time, whether the voltage stabilization event exists in the battery is judged, the normal voltage drop of the battery can be prevented from being detected as the leakage current, the leakage current misjudgment is avoided, and the accuracy of leakage current detection is improved.
Fig. 5 is a schematic flowchart of a leakage current detection method in another embodiment, where the present embodiment relates to a manner of determining whether a voltage stabilization event exists in a battery by an electronic device, and on the basis of the foregoing embodiment, as shown in fig. 5, the foregoing S203 includes:
s301, collecting the battery voltage of the battery at least two moments, and determining the variation amplitude of the battery voltage at the at least two moments.
The at least two moments may be any multiple moments after the voltage stabilization duration is delayed at the charging completion moment, or may be voltage collection moments selected according to a predetermined time interval. The at least two moments of time may include a charging completion moment of time, or may both be located after the charging completion moment of time. The time intervals between the above-mentioned times may be the same or different.
The electronic device may collect the battery voltages at least two times and then obtain the magnitude of change of each battery voltage. The variation range may be a plurality of voltage differences between the battery voltages corresponding to two adjacent moments, or may be a voltage difference between a maximum value and a minimum value in each battery voltage; the form of the variation width is not limited herein.
For example, the electronic device may collect the battery voltages at two moments in time, and then determine the difference between the battery voltages at the two moments in time as the variation amplitude of the battery voltage.
For another example, the electronic device may collect the battery voltages t1, t2, …, tn at multiple times according to the interval duration, and then perform curve fitting on the battery voltages to obtain a voltage change curve; then, the variation amplitude of the battery voltage is determined according to the voltage variation curve.
Optionally, before the electronic device collects the battery voltage at each time, it may be first detected whether the electronic device is in a connection state with the adapter, and the battery voltage is collected when the electronic device is in the connection state with the adapter. If the electronic device is disconnected from the adapter, the electronic device is powered by the battery, and the voltage of the battery is reduced along with the power supply of the battery. Therefore, by detecting the connection state of the electronic device and the adapter, the leakage current can be detected more accurately by judging the voltage stabilization event.
S302, judging whether the variation amplitude meets a preset voltage stabilization condition.
And S303, if yes, determining that the battery has a voltage stabilization event.
The voltage stabilization condition may be that the variation amplitude is smaller than a preset threshold, or that the variation amplitude is within a preset threshold range, which is not limited herein.
After determining the variation range of the battery voltage, the electronic device may match the variation range of the battery voltage with a preset voltage stabilization condition, and determine whether the variation range satisfies the preset voltage stabilization condition.
Optionally, the variation range is a difference of the battery voltage, and the electronic device may compare the difference with a preset threshold, and if the variation range is smaller than the preset threshold, determine that the variation range meets a preset voltage stabilization condition.
In another implementation, the voltage stabilization condition includes a stabilization period of the battery voltage. The electronic device may determine a duration that the transformation amplitude of the battery voltage is less than a preset threshold, and if the duration is greater than the preset duration threshold, determine that the transformation amplitude satisfies a preset voltage stabilization condition. And if the duration is less than a preset duration threshold, determining that the variation amplitude does not meet a preset voltage stability condition.
According to the leakage current detection method, the electronic equipment acquires the battery voltage of the battery, obtains the variation amplitude of the battery voltage, determines that the battery has a voltage stabilization event when the variation amplitude meets the preset voltage stabilization condition, quantifies the stable state of the battery through the voltage amplitude, and enables the electronic equipment to more accurately determine whether the battery has the voltage stabilization event, so that the accuracy of leakage current detection is improved.
In one embodiment, the leakage current detection process may be as shown in fig. 6:
s401, determining whether the battery reaches a full charge state at the current moment, if so, executing S402, and if not, returning to execute S401.
S402, acquiring the charging completion time when the battery reaches the full charge state.
And S403, acquiring the voltage stabilization duration of the battery after the battery reaches the full charge state.
S404, determining whether the electronic equipment is in a connection state with the adapter or not after the delay voltage stabilization duration is set at the moment when the charging is finished at the current moment, if so, executing S405, and if not, finishing the detection;
s405, collecting a first battery voltage at a first moment; the first moment is after delaying the voltage stabilization duration on the charging completion moment;
s406, determining whether the time interval between the current moment and the collection moment of the first battery voltage is larger than a preset interval or not; if yes, executing S407; if not, returning to execute S406;
and S407, detecting whether the electronic equipment is in a connection state with the adapter, if so, executing S408, and if not, finishing the detection.
S408, collecting a second battery voltage at a second moment; the second time is after the first time.
S409, determining whether the difference value between the second battery voltage and the first battery voltage is smaller than a preset threshold value, if so, determining that the battery does not have leakage current, and if not, determining that the battery has leakage current.
The implementation principle and technical effect of the leakage current detection method are similar to those of the above embodiments, and are not described herein again.
In one embodiment, after the electronic device determines that the battery does not have a voltage stabilization event through the battery voltages at two times, the electronic device may continue to collect the battery voltage to determine whether a voltage stabilization time will exist at a subsequent time. As shown in fig. 7, the electronic device collects the battery voltages corresponding to the time t3 and the time t4, and the difference between the two battery voltages is greater than the preset threshold, so that the electronic device can continue to collect the battery voltages at the time t5 and the time t6, and continue to determine whether a voltage stabilization event exists, thereby avoiding misjudgment.
Optionally, the electronic device may set a preset detection duration, and within the preset detection duration after the battery reaches the full charge state, if the battery does not have a voltage stabilization event, the leakage current detection is stopped.
Fig. 8 is a schematic flowchart of a leakage current detection method in another embodiment, where the embodiment relates to a manner of obtaining a voltage stabilization duration by an electronic device, and on the basis of the embodiment, as shown in fig. 7, the step S202 includes:
s501, obtaining the aging degree parameter of the battery.
The aging degree parameter may be a usage time of the battery, a capacity reduction ratio of the battery, or an aging level determined according to a usage state of the battery, and the type of the aging degree parameter is not limited herein.
Specifically, the electronic device may detect the degree of aging of the battery after a period of use, and then store the degree of aging parameter in the electronic device; when the electronic device detects the leakage current of the battery, the stored aging degree parameter in the electronic device can be read. In addition, the electronic device may determine an aging degree parameter of the battery according to a battery capacity of the battery when the leakage current is detected. The determination method of the aging parameter is not limited herein.
Optionally, the electronic device may obtain the current battery capacity of the battery after the battery reaches the full charge state; and then, comparing the current battery capacity with the preset initial battery capacity to determine the aging degree parameter of the battery. For example, if the initial battery capacity of the battery is 4000ma and the current battery capacity is 3800ma, then the electronic device may calculate a difference between the current battery capacity and the initial battery capacity, e.g., 200 ma, and determine a ratio of the difference to the initial battery capacity as an aging parameter of the battery, e.g., five percent.
S502, determining voltage stabilization duration corresponding to the aging degree parameter according to a preset corresponding relation; the preset corresponding relation comprises voltage stabilization duration corresponding to different aging degree parameters.
The electronic device may store a corresponding relationship between the aging parameter and the voltage stabilization duration, for example, in the corresponding relationship, when the aging parameter is ten percent, the corresponding voltage stabilization duration is 10 minutes; when the aging degree parameter is 30 percent, the corresponding voltage stabilization duration is half an hour.
According to the corresponding relation, the electronic equipment can determine the voltage stabilization duration of the battery.
According to the leakage current detection method, the electronic equipment determines the voltage stabilization duration of the battery according to the aging degree parameters, so that batteries with different aging degrees can correspond to an accurate voltage stabilization duration, the leakage current detection misjudgment caused by battery aging can be avoided, and the leakage current detection accuracy of the battery is improved.
It should be understood that although the various steps in the flow charts of fig. 2-8 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 2-8 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least some of the other steps.
In one embodiment, as shown in fig. 9, there is provided a leakage current detecting device including: a first determination module 10, a judgment module 20 and a second determination module 30, wherein:
a first determination module 10, configured to determine whether a battery reaches a full charge state at a current time; at the current moment, the electronic equipment where the battery is located and the adapter are in a connection state;
the judging module 20 is configured to, when the battery reaches the full charge state, judge whether a voltage stabilization event exists in the battery at a subsequent time after the battery reaches the full charge state; wherein the voltage stabilization condition represents that the voltage of the battery is stabilized within a preset range;
the second determining module 30 is configured to determine that there is no leakage current in the battery when there is a voltage stabilization event in the battery.
The leakage current detection device provided above can implement the embodiment of the leakage current detection method, and the implementation principle and technical effect are similar, which are not described herein again.
In an embodiment, on the basis of the above embodiment, as shown in fig. 10, the determining module 20 includes:
a first acquisition unit 201 for acquiring a charge completion time when the battery reaches a full charge state;
a second obtaining unit 202, configured to obtain a voltage stabilization duration of the battery after reaching a full charge state;
the determining unit 203 is configured to determine whether a voltage stabilization event occurs in the battery after delaying the voltage stabilization duration at the charging completion time.
In one embodiment, on the basis of the above embodiment, as shown in fig. 11, the above determining unit 203 includes:
the collecting subunit 2031 is configured to collect battery voltages of the battery at least two times, and determine variation amplitudes of the battery voltages at the at least two times;
a judging subunit 2032, configured to judge whether the variation amplitude meets a preset voltage stabilization condition;
the determining subunit 2033 is configured to determine that a voltage stabilization event exists in the battery when the variation amplitude satisfies a preset voltage stabilization condition.
In an embodiment, on the basis of the foregoing embodiment, the determining subunit 2033 is specifically configured to: and if the variation amplitude is smaller than the preset threshold value, determining that the variation amplitude meets the preset voltage stability condition.
In an embodiment, on the basis of the foregoing embodiment, the determining subunit 2033 is specifically configured to: determining the duration of the voltage transformation amplitude of the battery voltage being smaller than a preset threshold value; and if the duration is longer than the preset duration threshold, determining that the variation amplitude meets the preset voltage stability condition.
In an embodiment, on the basis of the foregoing embodiment, the determining subunit 2033 is specifically configured to: and within a preset detection time after the battery reaches the full charge state, if the battery does not have a voltage stabilization event, stopping leakage current detection.
In an embodiment, on the basis of the above embodiment, as shown in fig. 12, the determining unit 203 further includes:
the detecting subunit 2034 is configured to detect whether the electronic device is connected to the adapter, and if so, collect a battery voltage of the battery.
In an embodiment, on the basis of the foregoing embodiment, the second obtaining unit 202 is specifically configured to: acquiring an aging degree parameter of the battery; determining voltage stabilization duration corresponding to the aging degree parameter according to a preset corresponding relation; the preset corresponding relation comprises voltage stabilization duration corresponding to different aging degree parameters.
In an embodiment, on the basis of the foregoing embodiment, the second obtaining unit 202 is specifically configured to: after the battery reaches the full charge state, acquiring the current battery capacity of the battery; and comparing the current battery capacity with the preset initial battery capacity to determine the aging degree parameter of the battery.
In an embodiment, on the basis of the above embodiment, as shown in fig. 13, the apparatus further includes an early warning module 40, configured to: and if the battery has no voltage stabilization event, outputting battery leakage current early warning information.
For the specific definition of the leakage current detection device, reference may be made to the above definition of the leakage current detection method, which is not described herein again. All or part of each module in the leakage current detection device can be realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, an electronic device is provided, which may be a terminal, and its internal structure diagram may be as shown in fig. 14. The electronic device comprises a processor, a memory, a communication interface, a display screen and an input device which are connected through a system bus. Wherein the processor of the electronic device is configured to provide computing and control capabilities. The memory of the electronic equipment comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The communication interface of the electronic device is used for carrying out wired or wireless communication with an external terminal, and the wireless communication can be realized through WIFI, an operator network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a leakage current detection method. The display screen of the electronic equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the electronic equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the electronic equipment, an external keyboard, a touch pad or a mouse and the like.
Those skilled in the art will appreciate that the structure shown in fig. 14 is a block diagram of only a portion of the structure relevant to the present application, and does not constitute a limitation on the electronic device to which the present application is applied, and a particular electronic device may include more or less components than those shown in the drawings, or combine certain components, or have a different arrangement of components.
In one embodiment, an electronic device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor implementing the following steps when executing the computer program:
determining whether the battery reaches a full charge state at the current moment; at the current moment, the electronic equipment where the battery is located and the adapter are in a connection state;
if yes, judging whether the battery has a voltage stabilization event at the subsequent moment after the battery reaches the full charge state; wherein the voltage stabilization condition represents that the voltage of the battery is stabilized within a preset range;
and if so, determining that the battery has no leakage current.
In one embodiment, the processor, when executing the computer program, further performs the steps of: acquiring the charging completion time when the battery reaches a full-charge state; acquiring the voltage stabilization duration of the battery after the battery reaches a full charge state; and after delaying the voltage stabilization duration at the charging completion time, judging whether the battery has a voltage stabilization event or not.
In one embodiment, the processor, when executing the computer program, further performs the steps of: collecting the battery voltage of the battery at least two moments, and determining the variation amplitude of the battery voltage at the at least two moments; judging whether the variation amplitude meets a preset voltage stabilization condition or not; if yes, determining that the battery has a voltage stabilization event.
In one embodiment, the processor, when executing the computer program, further performs the steps of: and if the variation amplitude is smaller than the preset threshold value, determining that the variation amplitude meets the preset voltage stability condition.
In one embodiment, the processor, when executing the computer program, further performs the steps of: determining the duration of the voltage transformation amplitude of the battery voltage being smaller than a preset threshold value; and if the duration is longer than the preset duration threshold, determining that the variation amplitude meets the preset voltage stability condition.
In one embodiment, the processor, when executing the computer program, further performs the steps of: and within a preset detection time after the battery reaches the full charge state, if the battery does not have a voltage stabilization event, stopping leakage current detection.
In one embodiment, the processor, when executing the computer program, further performs the steps of: and detecting whether the electronic equipment is in a connection state with the adapter, and if so, executing a step of collecting the battery voltage of the battery.
In one embodiment, the processor, when executing the computer program, further performs the steps of: acquiring an aging degree parameter of the battery; determining voltage stabilization duration corresponding to the aging degree parameter according to a preset corresponding relation; the preset corresponding relation comprises voltage stabilization duration corresponding to different aging degree parameters.
In one embodiment, the processor, when executing the computer program, further performs the steps of: after the battery reaches the full charge state, acquiring the current battery capacity of the battery; and comparing the current battery capacity with the preset initial battery capacity to determine the aging degree parameter of the battery.
In one embodiment, the processor, when executing the computer program, further performs the steps of: and if the battery has no voltage stabilization event, outputting battery leakage current early warning information.
The implementation principle and technical effect of the electronic device provided by this embodiment are similar to those of the method embodiments described above, and are not described herein again.
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of:
determining whether the battery reaches a full charge state at the current moment; at the current moment, the electronic equipment where the battery is located and the adapter are in a connection state;
if yes, judging whether the battery has a voltage stabilization event at the subsequent moment after the battery reaches the full charge state; wherein the voltage stabilization condition represents that the voltage of the battery is stabilized within a preset range;
and if so, determining that the battery has no leakage current.
In one embodiment, the computer program when executed by the processor further performs the steps of: acquiring the charging completion time when the battery reaches a full-charge state; acquiring the voltage stabilization duration of the battery after the battery reaches a full charge state; and after delaying the voltage stabilization duration at the charging completion time, judging whether the battery has a voltage stabilization event or not.
In one embodiment, the computer program when executed by the processor further performs the steps of: collecting the battery voltage of the battery at least two moments, and determining the variation amplitude of the battery voltage at the at least two moments; judging whether the variation amplitude meets a preset voltage stabilization condition or not; if yes, determining that the battery has a voltage stabilization event.
In one embodiment, the computer program when executed by the processor further performs the steps of: and if the variation amplitude is smaller than the preset threshold value, determining that the variation amplitude meets the preset voltage stability condition.
In one embodiment, the computer program when executed by the processor further performs the steps of: determining the duration of the voltage transformation amplitude of the battery voltage being smaller than a preset threshold value; and if the duration is longer than the preset duration threshold, determining that the variation amplitude meets the preset voltage stability condition.
In one embodiment, the computer program when executed by the processor further performs the steps of: and within a preset detection time after the battery reaches the full charge state, if the battery does not have a voltage stabilization event, stopping leakage current detection.
In one embodiment, the computer program when executed by the processor further performs the steps of: and detecting whether the electronic equipment is in a connection state with the adapter, and if so, executing a step of collecting the battery voltage of the battery.
In one embodiment, the computer program when executed by the processor further performs the steps of: acquiring an aging degree parameter of the battery; determining voltage stabilization duration corresponding to the aging degree parameter according to a preset corresponding relation; the preset corresponding relation comprises voltage stabilization duration corresponding to different aging degree parameters.
In one embodiment, the computer program when executed by the processor further performs the steps of: after the battery reaches the full charge state, acquiring the current battery capacity of the battery; and comparing the current battery capacity with the preset initial battery capacity to determine the aging degree parameter of the battery.
In one embodiment, the computer program when executed by the processor further performs the steps of: and if the battery has no voltage stabilization event, outputting battery leakage current early warning information.
The computer storage medium provided in this embodiment has similar implementation principles and technical effects to those of the above method embodiments, and is not described herein again.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware related to instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (13)
1. A method for detecting leakage current, the method comprising:
determining whether the battery reaches a full charge state at the current moment; at the current moment, the electronic equipment where the battery is located and the adapter are in a connection state;
if so, judging whether the battery has a voltage stabilization event at the subsequent moment after the battery reaches the full charge state; wherein the voltage stabilization condition represents that the voltage of the battery is stabilized within a preset range;
and if so, determining that the battery has no leakage current.
2. The leakage current detection method of claim 1, wherein the determining whether the battery has a voltage stabilization event at a subsequent time after the battery reaches the full charge state comprises:
acquiring the charging completion time of the battery when the battery reaches the full charge state;
acquiring the voltage stabilization duration of the battery after the battery reaches the full charge state;
and after delaying the voltage stabilization duration at the charging completion time, judging whether the battery has a voltage stabilization event.
3. The leakage current detection method of claim 2, wherein said determining whether the battery has a voltage stabilization event comprises:
collecting the battery voltage of the battery at least two moments, and determining the variation amplitude of the battery voltage at the at least two moments;
judging whether the variation amplitude meets a preset voltage stabilization condition or not;
if so, determining that the voltage stabilization event exists in the battery.
4. A leakage current detection method according to claim 3, wherein the determining whether the variation amplitude satisfies a preset voltage stabilization condition includes:
and if the variation amplitude is smaller than a preset threshold value, determining that the variation amplitude meets a preset voltage stabilization condition.
5. A leakage current detection method according to claim 3, wherein the determining whether the variation amplitude satisfies a preset voltage stabilization condition includes:
determining the duration of the voltage transformation amplitude of the battery voltage being smaller than a preset threshold value;
and if the duration is greater than a preset duration threshold, determining that the variation amplitude meets a preset voltage stabilization condition.
6. A leakage current detection method according to any one of claims 3-5, further comprising:
and within a preset detection time after the battery reaches the full charge state, if the battery does not have the voltage stabilization event, stopping leakage current detection.
7. A leakage current detection method according to any one of claims 3-5, wherein before collecting the cell voltages of the cell at least two moments in time, further comprising:
and detecting whether the electronic equipment is in a connection state with the adapter, and if so, executing a step of collecting the battery voltage of the battery.
8. The leakage current detection method according to any one of claims 2 to 5, wherein the obtaining a voltage stabilization duration of the battery after reaching the full charge state includes:
acquiring an aging degree parameter of the battery;
determining the voltage stabilization duration corresponding to the aging degree parameter according to a preset corresponding relation; the preset corresponding relation comprises voltage stabilization duration corresponding to different aging degree parameters.
9. The leakage current detection method of claim 8, wherein said obtaining a parameter of a degree of degradation of the battery comprises:
after the battery reaches the full charge state, acquiring the current battery capacity of the battery;
and comparing the current battery capacity with a preset initial battery capacity, and determining the aging degree parameter of the battery.
10. A leakage current detection method according to any one of claims 1 to 5, further comprising:
and if the battery does not have the voltage stabilization event, outputting battery leakage current early warning information.
11. A leakage current detection apparatus, comprising:
the first determination module is used for determining whether the battery reaches a full charge state at the current moment; at the current moment, the electronic equipment where the battery is located and the adapter are in a connection state;
the judging module is used for judging whether a voltage stabilization event exists in the battery at the subsequent moment after the battery reaches the full charge state under the condition that the battery reaches the full charge state; wherein the voltage stabilization condition represents that the voltage of the battery is stabilized within a preset range;
a second determination module to determine that there is no leakage current for the battery if the battery has the voltage stabilization event.
12. An electronic device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor realizes the steps of the method of any one of claims 1 to 10 when executing the computer program.
13. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 10.
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