CN112098864B - 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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- CN112098864B CN112098864B CN202011023102.7A CN202011023102A CN112098864B CN 112098864 B CN112098864 B CN 112098864B CN 202011023102 A CN202011023102 A CN 202011023102A CN 112098864 B CN112098864 B CN 112098864B
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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
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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 positioned is in a connection state with an adapter, the electronic equipment determines whether the battery reaches a full charge state at the current moment; judging whether a voltage stabilizing event exists in the battery at a subsequent moment after the battery reaches the full charge state under the condition that the battery reaches the full charge state; if the battery has a voltage stabilizing event, determining that the battery has no leakage current; wherein the voltage stabilizing condition characterizes that the voltage of the battery is stabilized in 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 user experience, and faults such as fire and the like caused by overlarge leakage current of the battery are avoided.
Description
Technical Field
The present application relates to the field of battery technologies, and in particular, to a leakage current detection method, a device, an electronic apparatus, and a storage medium.
Background
Battery safety has become an important factor in affecting the safety of electronic devices such as mobile phones. Generally, the protection board is used in the electronic device to monitor the use of the battery, including monitoring the performance of over-charge, over-discharge, over-voltage, over-current, temperature and the like of the battery, so as to ensure the use safety of the electronic device. However, the protection plate cannot detect the leakage current inside the battery, and when the leakage current is large to a certain extent, more heat is generated inside the battery, which may cause thermal runaway and ignition of the battery.
In the traditional method, the electronic equipment can collect the charge quantity and the charge duration of the battery in the charging process, and then calculate the leakage current value of the battery, so as to judge whether the battery is qualified in leakage current detection or not according to the magnitude of the leakage current value.
However, with the above method, erroneous judgment is likely to occur, resulting in inaccurate detection of leakage current.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a leakage current detection method, apparatus, electronic device, and storage medium capable of improving the accuracy of leakage current detection.
A leakage current detection method includes:
determining whether the battery reaches a full charge state at the current moment; under the current moment, the electronic equipment where the battery is located is in a connection state with the adapter;
if so, judging whether the battery has a voltage stabilizing event at the subsequent moment after the battery reaches the full charge state; the voltage stabilizing condition indicates that the voltage of the battery is stabilized in a preset range;
if so, determining that the battery has no leakage current.
In one embodiment, the determining whether the battery has a voltage stabilizing event at a subsequent time after the battery reaches the full charge state includes:
Acquiring the charging completion time of the battery when the battery reaches a full charge state;
acquiring the voltage stabilization time length of the battery after the battery reaches a full charge state;
after the voltage stabilization period is delayed at the time of completion of charging, it is determined whether a voltage stabilization event exists in the battery.
In one embodiment, the determining whether the battery has a voltage stabilizing event includes:
collecting battery voltage of the battery at least two moments, and determining the variation amplitude of the battery voltage at least two moments;
judging whether the variation amplitude meets a preset voltage stabilizing condition or not;
if yes, determining that a voltage stabilizing event exists in the battery.
In one embodiment, the determining whether the variation width meets the preset voltage stabilizing condition includes:
if the variation amplitude is smaller than the preset threshold value, determining that the variation amplitude meets the preset voltage stabilizing condition.
In one embodiment, the determining whether the variation width meets the preset voltage stabilizing condition includes:
determining the duration time when the voltage transformation amplitude of the battery voltage is smaller than a preset threshold value;
if the duration time is longer than the preset duration time threshold, determining that the change amplitude meets the preset voltage stabilizing condition.
In one embodiment, the method further comprises:
And stopping leakage current detection if the battery does not have a voltage stabilizing event within a preset detection time period after the battery reaches a full charge state.
In one embodiment, before the collecting the battery voltage 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 the step of collecting the battery voltage of the battery.
In one embodiment, the obtaining the voltage stabilization period of the battery after reaching the full charge state includes:
obtaining an aging degree parameter of a battery;
determining voltage stabilization time length corresponding to the aging degree parameter according to a preset corresponding relation; the preset corresponding relation comprises voltage stabilization time periods corresponding to the parameters of different aging degrees.
In one embodiment, the obtaining the aging degree parameter of the battery includes:
after the battery reaches a full charge state, acquiring the current battery capacity of the battery;
and comparing the current battery capacity with the preset initial battery capacity, and determining the aging degree parameter of the battery.
In one embodiment, the method further comprises:
if the battery does not have a voltage stabilizing event, outputting battery leakage current early warning information.
A leakage current detection device, said device comprising:
the first determining module is used for determining whether the battery reaches a full charge state at the current moment; under the current moment, the electronic equipment where the battery is located is in a connection state with the adapter;
the judging module is used for judging whether the battery has a voltage stabilizing event at the subsequent moment after the battery reaches the full charge state under the condition that the battery reaches the full charge state; the voltage stabilizing condition indicates that the voltage of the battery is stabilized in a preset range;
and the second determining module is used for determining that the battery does not have leakage current under the condition that the battery has a voltage stabilizing event.
An electronic device comprising a memory storing a computer program and a processor which when executing the computer program performs the steps of:
determining whether the battery reaches a full charge state at the current moment; under the current moment, the electronic equipment where the battery is located is in a connection state with the adapter;
if so, judging whether the battery has a voltage stabilizing event at the subsequent moment after the battery reaches the full charge state; the voltage stabilizing condition indicates that the voltage of the battery is stabilized in a preset range;
if so, determining that the battery has no leakage current.
A computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:
determining whether the battery reaches a full charge state at the current moment; under the current moment, the electronic equipment where the battery is located is in a connection state with the adapter;
if so, judging whether the battery has a voltage stabilizing event at the subsequent moment after the battery reaches the full charge state; the voltage stabilizing condition indicates that the voltage of the battery is stabilized in a preset range;
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 in a connection state with the adapter, the electronic equipment determines whether the battery reaches a full charge state at the current moment; judging whether a voltage stabilizing event exists in the battery at a subsequent moment after the battery reaches the full charge state under the condition that the battery reaches the full charge state; if the battery has a voltage stabilizing event, determining that the battery has no leakage current; wherein the voltage stabilizing condition characterizes that the voltage of the battery is stabilized in a preset range. When the electronic equipment where the battery is located is in a connection state with the adapter, the adapter supplies power to the electronic equipment, and the battery stops supplying power outwards. When the battery reaches a full charge state, the voltage will continue to drop for batteries with leakage current, and for batteries without leakage current, the voltage will reach a steady state, i.e., voltage stabilizing events. According to the application, under the condition that the battery reaches the full charge state, whether the battery has a voltage stabilizing event at the subsequent moment is judged, so that whether the battery has leakage current can be accurately judged, and erroneous judgment is avoided; further, the electronic equipment can predict the battery state in advance under the condition of ensuring user experience, and faults such as fire and the like caused by overlarge leakage current of the battery are avoided.
Drawings
FIG. 1 is a diagram showing an application environment of a leakage current detection method in one embodiment;
FIG. 2 is a flow chart of 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 schematic diagram of a leakage current detection method according to an embodiment;
FIG. 5 is a flow chart of a leakage current detection method according to another embodiment;
FIG. 6 is a flow chart of a leakage current detection method according to another embodiment;
FIG. 7 is a schematic diagram of a leakage current detection method according to another embodiment;
FIG. 8 is a flow chart of a leakage current detection method according to another embodiment;
FIG. 9 is a block diagram of a leakage current detection device according to an embodiment;
FIG. 10 is a block diagram showing a leakage current detecting device according to another embodiment;
FIG. 11 is a block diagram showing a leakage current detecting device according to another embodiment;
FIG. 12 is a block diagram showing a leakage current detecting device according to another embodiment;
FIG. 13 is a block diagram showing a leakage current detecting device according to another embodiment;
fig. 14 is an internal structural diagram of a computer device in one embodiment.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
The leakage current detection method provided by the application can be applied to an application environment shown in fig. 1. The electronic device 100 includes a battery 200 therein, and the battery 200 may 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 business data connectivity to a user, a handheld device with wireless connectivity, 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, may be portable, pocket-sized, hand-held, a mobile device built in or on-board the computer, 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 household 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 connection adapter, a wireless charging base, or the like, and the type of the adapter 300 is not limited herein. The adapter 300 may be communicatively connected to the electronic device 100.
The leakage current refers to self-discharge generated in a current loop inside the battery under the condition that the battery is not connected with an external load, so that current consumption is caused inside the battery. When the leakage current is small, the loss of the capacity of the battery is easy to cause, namely the capacity of 4000mAh can be released originally, but the capacity value utilized in the actual use process can be 3800mAh only; when the leakage current is large to a certain extent, for example, the current value of the leakage current in the battery is more than 1A, the battery can generate large heat, and even the internal reaction of the battery is severe, the electrolyte is consumed, the oxidation-reduction reaction is aggravated, the oxygen release combustion-supporting reaction and the like can be caused, so that the thermal runaway and the ignition of the battery can be caused. 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 an example that the method is applied to the electronic device in fig. 1, and includes:
s101, determining whether a battery reaches a full charge state at the current moment; at the current moment, the electronic equipment where the battery is located is in a connection state with the adapter.
When the adapter is in a connected state with the electronic device, the battery in the electronic device will not power the electronic device any more based on the charging logic, but the adapter will power the electronic device. The electronic device may first determine whether the battery reaches a full charge state at the current time, so as to detect a leakage current of the battery in the full charge state.
Specifically, the electronic device may monitor the charging state of the battery in real time, and start to perform leakage detection on the battery after the battery reaches the full charging state; alternatively, the electronic device may determine at a predetermined time whether the battery has reached a full charge state. 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 the whole night; the electronic device may set a certain time in the early 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, e.g., when the remaining battery amount of the electronic device is 100%, the electronic device may consider the battery to have reached a full charge state. Alternatively, the electronic device may determine whether a full charge state is reached according to the charge current level of the battery. For the constant-current constant-voltage charging mode, the adapter charges the battery with a constant current, and after the voltage of the battery reaches the cutoff voltage, the battery is charged with a constant voltage until the charging current of the battery reaches the cutoff current, which 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 manner of determining the full charge state is not limited herein.
In addition, the electronic device may further determine whether the battery reaches a full charge state according to the charging duration, for example, the battery charging duration 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 with the electronic device and the time when the battery charging is required.
S102, if so, judging whether a voltage stabilizing event exists in the battery at a subsequent moment after the battery reaches a full charge state; wherein the voltage stabilizing condition characterizes that the voltage of the battery is stabilized within a preset range.
After determining that the battery has reached a 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 at a subsequent time when the battery reaches a full charge state.
The subsequent time when the battery reaches the full charge state may refer to a period of time when the battery reaches the full charge state and the electronic device is in a connection state with the adapter. The time period may be a fixed duration of time, 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 stabilizing 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 described above may be used to characterize the voltage of the battery as stabilized within a preset range. When the battery reaches a full charge state, the voltage will continue to drop for batteries with leakage current, and for batteries without leakage current, the voltage will reach a steady state, i.e., voltage stabilizing events. The voltage stabilizing event means that the voltage of the battery is stable and unchanged and is maintained at a fixed value; alternatively, the voltage stabilizing event may refer to the voltage of the battery fluctuating 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 the voltage of the battery to be stable, and a voltage stabilizing 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 may determine whether the voltage value is stable within a preset range according to the collecting the plurality of voltage values.
And S103, if the leakage current exists, determining that the leakage current does not exist in the battery.
If a voltage stabilization event exists for the battery, the electronic device may determine that the battery is not subject to leakage current. Further, the electronic device may determine that the leakage current detection result is qualified for battery leakage current detection, and store a leakage current detection log.
If the electronic device determines that the voltage of the battery is not stable within the preset range, for example, the voltage of the battery continuously drops, 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 consider that the battery has leakage current. Further, the electronic device may determine that the leakage current detection result is unqualified for leakage current detection, and save a leakage current detection log. Optionally, the electronic device may output battery leakage current warning information after determining that the battery does not have a voltage stabilizing event. The current early warning information can be displayed to a user through a system message, and battery leakage current early warning can be performed through a battery state interface.
According to the leakage current detection method, when the electronic equipment where the battery is located is in a connection state with the adapter, the electronic equipment determines whether the battery reaches a full charge state at the current moment; judging whether a voltage stabilizing event exists in the battery at a subsequent moment after the battery reaches the full charge state under the condition that the battery reaches the full charge state; if the battery has a voltage stabilizing event, determining that the battery has no leakage current; wherein the voltage stabilizing condition characterizes that the voltage of the battery is stabilized in a preset range. When the electronic equipment where the battery is located is in a connection state with the adapter, the adapter supplies power to the electronic equipment, and the battery stops supplying power outwards. When the battery reaches a full charge state, the voltage will continue to drop for batteries with leakage current, and for batteries without leakage current, the voltage will reach a steady state, i.e., voltage stabilizing events. According to the application, under the condition that the battery reaches the full charge state, whether the battery has a voltage stabilizing event at the subsequent moment is judged, so that whether the battery has leakage current can be accurately judged, and erroneous judgment is avoided; further, the electronic equipment can predict the battery state in advance under the condition of ensuring user experience, and faults such as fire and the like caused by overlarge leakage current of the battery are avoided.
Fig. 3 is a flowchart of another embodiment of a leakage current detection method, where the embodiment relates to a manner in which the electronic device determines whether a voltage stabilization event exists in the battery, and on the basis of the above embodiment, as shown in fig. 3, the step S102 includes:
s201, acquiring the charging completion time of the battery 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 off current. The electronic equipment can monitor the charging state in real time, and records the charging completion time when the battery reaches the full charging state.
S202, acquiring the voltage stabilizing time of the battery after the battery reaches the full charge state.
In general, after the battery reaches a 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 drops by a certain magnitude after the battery reaches a steady state. The process of the voltage reaching the stable state is the voltage stabilizing time of the battery. The above voltage stabilization period is generally fixed for the same type of battery. The staff can determine the voltage stability duration of the battery of the model by collecting the duration required by the voltage drop of the battery of the same batch and pre-store the duration in the electronic equipment, for example, the staff can measure 100 batteries, wherein the voltage stability duration of 80 batteries is about 5 minutes, and then the duration can be determined as the voltage stability duration of the battery of the model.
When the electronic equipment detects the leakage current of the battery, the voltage stabilizing duration can be obtained by reading the parameters stored in the electronic equipment. In addition, the voltage stabilization time of the battery can be related to parameters such as the aging degree of the battery, the service time of the battery, the service life of the battery and the like, and the electronic equipment can determine more accurate voltage stabilization time according to the parameters.
And S203, judging whether a voltage stabilizing event exists in the battery after delaying the voltage stabilizing time at the time of charging completion.
On the basis of the steps, after the voltage stabilizing time is delayed at the time of the completion of the charging, whether the battery has a voltage stabilizing event is judged. As shown in fig. 4, if the battery reaches the full charge state at time t1 and the voltage stabilizing period of the battery is t, the electronic device may start to detect the leakage current of the battery at time t2=t1+t, to determine whether the battery has a voltage stabilizing period.
According to the leakage current detection method, after the voltage stabilization time is delayed at the charging completion time, the electronic equipment judges whether the voltage stabilization event exists in the battery or not, normal voltage drop of the battery can be prevented from being detected as leakage current, erroneous judgment of the leakage current is avoided, and accuracy of leakage current detection is improved.
Fig. 5 is a flowchart of another embodiment of a leakage current detection method, where the embodiment relates to a manner in which the electronic device determines whether a voltage stabilization event exists in the battery, and on the basis of the above embodiment, as shown in fig. 5, the step S203 includes:
s301, collecting battery voltages of the battery at least two moments, and determining the change amplitude of the battery voltages at the at least two moments.
The at least two times may be any plurality of times after a delay of the voltage stabilizing period at the charging completion time, or may be voltage acquisition times selected at predetermined time intervals. The at least two times may include a charging completion time, or may be located after the charging completion time. The time intervals between the plurality of times may be the same or different.
The electronic device may collect the battery voltages at least two times and then obtain the magnitudes of the variations of the respective battery voltages. 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 among the battery voltages; the form of the variation is not limited herein.
For example, the electronic device may collect the battery voltages at two times and then determine the difference between the battery voltages at the two times as the magnitude of the change in the battery voltages.
For another example, the electronic device may collect battery voltages at a plurality of moments, t1, t2, …, tn according to the interval duration, and then perform curve fitting on the battery voltages to obtain a voltage variation curve; then, the variation amplitude of the battery voltage is determined from the voltage variation curve.
Optionally, before the electronic device collects the battery voltage at each time, it may first detect whether the electronic device is in a connection state with the adapter, and then collect the battery voltage when the electronic device is in a 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 decreases as the battery supplies power. Therefore, by detecting the connection state of the electronic device and the adapter, the leakage current detection can be performed more accurately by judging the voltage stabilizing event.
S302, judging whether the variation amplitude meets a preset voltage stabilizing condition.
And S303, if yes, determining that a voltage stabilizing event exists in the battery.
The voltage stabilizing condition may be that the variation range is smaller than a preset threshold value, or that the variation range is within a preset threshold value, which is not limited herein.
After determining the variation amplitude of the battery voltage, the electronic device may match the variation amplitude of the battery voltage with a preset voltage stabilizing condition, and determine whether the variation amplitude satisfies the preset voltage stabilizing condition.
Optionally, the variation range is a difference value of the battery voltage, and the electronic device may compare the difference value with a preset threshold value, and if the variation range is smaller than the preset threshold value, determine that the variation range meets a preset voltage stabilizing condition.
In another implementation, the voltage stabilization condition includes a duration of stabilization of the battery voltage. The electronic device may determine that the voltage variation amplitude of the battery voltage is less than a duration of a preset threshold, and if the duration is greater than the preset duration threshold, determine that the voltage variation amplitude satisfies a preset voltage stabilizing condition. If the duration is smaller than the preset duration threshold, determining that the variation amplitude does not meet the preset voltage stabilizing condition.
According to the leakage current detection method, the electronic equipment acquires the battery voltage of the battery and obtains the variation amplitude of the battery voltage, then when the variation amplitude meets the preset voltage stabilization condition, the battery is determined to have a voltage stabilization event, and the stable state of the battery can be quantitatively measured through the voltage amplitude, so that the electronic equipment can more accurately determine whether the battery has the voltage stabilization event, and 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 executing S401.
S402, acquiring the charging completion time of the battery when the battery reaches the full charge state.
S403, obtaining the voltage stabilizing time length of the battery after the battery reaches the full charge state.
S404, determining whether the current moment is in a connection state with the adapter after delaying the voltage stabilizing time at the time of completing charging, if so, executing S405, and if not, ending the detection;
s405, collecting a first battery voltage at a first moment; the first time is after the voltage stabilization time is delayed at the charging completion time;
s406, determining whether the time interval between the current time and the acquisition time of the first battery voltage is larger than a preset interval; if yes, then execute S407; if not, returning to execute S406;
s407, detecting whether the electronic equipment is in a connection state with the adapter, if so, executing S408, and if not, ending 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 yes, determining that the battery has no leakage current, and if not, determining that the battery has leakage current.
The implementation principle and technical effects of the above 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 from the battery voltages at two times, the electronic device may continue to collect the battery voltages 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 a preset threshold, so that the electronic device can continuously collect the battery voltages at the time t5 and the time t6, continuously determine whether a voltage stabilizing event exists, and avoid erroneous determination.
Optionally, the electronic device may set a preset detection duration, and stop the leakage current detection if the battery has no voltage stabilizing event within the preset detection duration after the battery reaches the full charge state.
Fig. 8 is a flowchart of a leakage current detection method in another embodiment, where the embodiment relates to a manner in which the electronic device obtains the voltage stabilizing period, and based on the above embodiment, as shown in fig. 7, the step S202 includes:
s501, acquiring an aging degree parameter of a battery.
The aging degree parameter may be a time period of use of the battery, a capacity reduction ratio of the battery, or an aging level determined according to a use state of the battery, and the type of the aging degree parameter is not limited.
Specifically, the electronic device may detect the aging degree of the battery after a period of use, and then store the aging degree parameter in the electronic device; when the electronic equipment detects the leakage current of the battery, the aging degree parameters stored in the electronic equipment can be read. In addition, the electronic device can determine the aging degree parameter of the battery according to the battery capacity of the battery during leakage current detection. The manner of determining the aging degree parameter is not limited herein.
Optionally, the electronic device may obtain a current battery capacity of the battery after the battery reaches a 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, the initial battery capacity of the battery is 4000 milliamperes and the current battery capacity is 3800 milliamperes, then the electronic device may calculate a difference between the current battery capacity and the initial battery capacity, for example, 200 milliamperes, and then determine a ratio of the difference in capacity to the initial battery capacity as a degradation degree parameter of the battery, for example, five percent.
S502, determining voltage stabilization time length corresponding to the aging degree parameter according to a preset corresponding relation; the preset corresponding relation comprises voltage stabilization time periods corresponding to the parameters of different aging degrees.
The electronic device may store a correspondence between the aging degree parameter and the voltage stabilization duration, for example, in the correspondence, when the aging degree parameter is ten percent, the corresponding voltage stabilization duration is 10 minutes; when the aging degree parameter is 30 percent, the corresponding voltage stabilizing time is half an hour.
According to the correspondence, the electronic device may determine the voltage stabilizing period of the battery.
According to the leakage current detection method, the electronic equipment determines the voltage stability time of the battery according to the aging degree parameters, so that batteries with different aging degrees can correspond to one accurate voltage stability time, misjudgment of leakage current detection 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 steps in the flowcharts of fig. 2-8 are shown in order as indicated by the arrows, these steps are not necessarily performed in order as indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in fig. 2-8 may include multiple steps or stages that are not necessarily performed at the same time, but may be performed at different times, nor does the order in which the steps or stages are performed necessarily performed in sequence, but may be performed alternately or alternately with at least a portion of the steps or stages in other steps or other steps.
In one embodiment, as shown in fig. 9, there is provided a leakage current detection apparatus including: a first determining module 10, a judging module 20 and a second determining module 30, wherein:
a first determining module 10, configured to determine whether the battery reaches a full charge state at the current moment; under the current moment, the electronic equipment where the battery is located is in a connection state with the adapter;
a judging module 20, configured to judge whether a voltage stabilization event exists in the battery at a subsequent time after the battery reaches the full charge state, if the battery reaches the full charge state; the voltage stabilizing condition indicates that the voltage of the battery is stabilized in a preset range;
the second determining module 30 is configured to determine that the battery has no leakage current in the case where the battery has a voltage stabilizing event.
The leakage current detection device provided above may implement the embodiment of the leakage current detection method, and its implementation principle and technical effects are similar, and will not be described herein.
In one embodiment, on the basis of the above embodiment, as shown in fig. 10, the above judging module 20 includes:
a first obtaining unit 201, configured to obtain a charging 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;
And a judging unit 203 for judging whether the battery has a voltage stabilizing event after delaying the voltage stabilizing period at the charging completion time.
In one embodiment, on the basis of the above embodiment, as shown in fig. 11, the above judging unit 203 includes:
an acquisition subunit 2031, configured to acquire a battery voltage of the battery at least two moments, and determine a variation amplitude of the battery voltage at least two moments;
a judging subunit 2032, configured to judge whether the variation amplitude meets a preset voltage stability condition;
a determining subunit 2033 is configured to determine that the battery has a voltage stabilization event when the variation amplitude satisfies a preset voltage stabilization condition.
In one embodiment, on the basis of the above embodiment, the determining subunit 2033 is specifically configured to: if the variation amplitude is smaller than the preset threshold value, determining that the variation amplitude meets the preset voltage stabilizing condition.
In one embodiment, on the basis of the above embodiment, the determining subunit 2033 is specifically configured to: determining the duration time when the voltage transformation amplitude of the battery voltage is smaller than a preset threshold value; if the duration time is longer than the preset duration time threshold, determining that the change amplitude meets the preset voltage stabilizing condition.
In one embodiment, on the basis of the above embodiment, the determining subunit 2033 is specifically configured to: and stopping leakage current detection if the battery does not have a voltage stabilizing event within a preset detection time period after the battery reaches a full charge state.
In one embodiment, on the basis of the above embodiment, as shown in fig. 12, the above judging unit 203 further includes:
a detecting subunit 2034, configured to detect whether the electronic device is in a connection state with the adapter, and if so, perform battery voltage acquisition of the battery.
In one embodiment, based on the above embodiment, the second obtaining unit 202 is specifically configured to: obtaining an aging degree parameter of a battery; determining voltage stabilization time length corresponding to the aging degree parameter according to a preset corresponding relation; the preset corresponding relation comprises voltage stabilization time periods corresponding to the parameters of different aging degrees.
In one embodiment, based on the above embodiment, the second obtaining unit 202 is specifically configured to: after the battery reaches a full charge state, acquiring the current battery capacity of the battery; and comparing the current battery capacity with the preset initial battery capacity, and determining the aging degree parameter of the battery.
In one embodiment, on the basis of the foregoing embodiment, as shown in fig. 13, the apparatus further includes an early warning module 40, configured to: if the battery does not have a voltage stabilizing event, outputting battery leakage current early warning information.
For specific limitation of the leakage current detection device, reference may be made to the limitation of the leakage current detection method hereinabove, and the description thereof will not be repeated here. Each of the above-described blocks in the leakage current detection device may be implemented in whole or in part by software, hardware, or a combination thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
In one embodiment, an electronic device is provided, which may be a terminal, and an internal structure diagram thereof may be as shown in fig. 14. The electronic device includes a processor, a memory, a communication interface, a display screen, and an input device connected by a system bus. Wherein the processor of the electronic device is configured to provide computing and control capabilities. The memory of the electronic device includes 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 the operating system and computer programs in the non-volatile storage media. The communication interface of the electronic device is used for carrying out wired or wireless communication with an external terminal, and the wireless mode 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, can also be keys, a track ball or a touch pad arranged on the shell of the electronic equipment, and can also be an external keyboard, a touch pad or a mouse and the like.
It will be appreciated by those skilled in the art that the structure shown in fig. 14 is merely a block diagram of a portion of the structure associated with the present inventive arrangements and is not limiting of the electronic device to which the present inventive arrangements are applied, and that a particular electronic device may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, an electronic device is provided that includes a memory having a computer program stored therein and a processor that when executing the computer program performs the steps of:
determining whether the battery reaches a full charge state at the current moment; under the current moment, the electronic equipment where the battery is located is in a connection state with the adapter;
if so, judging whether the battery has a voltage stabilizing event at the subsequent moment after the battery reaches the full charge state; the voltage stabilizing condition indicates that the voltage of the battery is stabilized in a preset range;
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 of the battery when the battery reaches a full charge state; acquiring the voltage stabilization time length of the battery after the battery reaches a full charge state; after the voltage stabilization period is delayed at the time of completion of charging, it is determined whether a voltage stabilization event exists in the battery.
In one embodiment, the processor when executing the computer program further performs the steps of: collecting battery voltage of the battery at least two moments, and determining the variation amplitude of the battery voltage at least two moments; judging whether the variation amplitude meets a preset voltage stabilizing condition or not; if yes, determining that a voltage stabilizing event exists in the battery.
In one embodiment, the processor when executing the computer program further performs the steps of: if the variation amplitude is smaller than the preset threshold value, determining that the variation amplitude meets the preset voltage stabilizing condition.
In one embodiment, the processor when executing the computer program further performs the steps of: determining the duration time when the voltage transformation amplitude of the battery voltage is smaller than a preset threshold value; if the duration time is longer than the preset duration time threshold, determining that the change amplitude meets the preset voltage stabilizing condition.
In one embodiment, the processor when executing the computer program further performs the steps of: and stopping leakage current detection if the battery does not have a voltage stabilizing event within a preset detection time period after the battery reaches a full charge state.
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 the step of collecting the battery voltage of the battery.
In one embodiment, the processor when executing the computer program further performs the steps of: obtaining an aging degree parameter of a battery; determining voltage stabilization time length corresponding to the aging degree parameter according to a preset corresponding relation; the preset corresponding relation comprises voltage stabilization time periods corresponding to the parameters of different aging degrees.
In one embodiment, the processor when executing the computer program further performs the steps of: after the battery reaches a full charge state, acquiring the current battery capacity of the battery; and comparing the current battery capacity with the preset initial battery capacity, and determining the aging degree parameter of the battery.
In one embodiment, the processor when executing the computer program further performs the steps of: if the battery does not have a voltage stabilizing event, outputting battery leakage current early warning information.
The implementation principle and technical effects of the electronic device provided in this embodiment are similar to those of the foregoing method embodiment, 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; under the current moment, the electronic equipment where the battery is located is in a connection state with the adapter;
If so, judging whether the battery has a voltage stabilizing event at the subsequent moment after the battery reaches the full charge state; the voltage stabilizing condition indicates that the voltage of the battery is stabilized in a preset range;
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 of the battery when the battery reaches a full charge state; acquiring the voltage stabilization time length of the battery after the battery reaches a full charge state; after the voltage stabilization period is delayed at the time of completion of charging, it is determined whether a voltage stabilization event exists in the battery.
In one embodiment, the computer program when executed by the processor further performs the steps of: collecting battery voltage of the battery at least two moments, and determining the variation amplitude of the battery voltage at least two moments; judging whether the variation amplitude meets a preset voltage stabilizing condition or not; if yes, determining that a voltage stabilizing event exists in the battery.
In one embodiment, the computer program when executed by the processor further performs the steps of: if the variation amplitude is smaller than the preset threshold value, determining that the variation amplitude meets the preset voltage stabilizing condition.
In one embodiment, the computer program when executed by the processor further performs the steps of: determining the duration time when the voltage transformation amplitude of the battery voltage is smaller than a preset threshold value; if the duration time is longer than the preset duration time threshold, determining that the change amplitude meets the preset voltage stabilizing condition.
In one embodiment, the computer program when executed by the processor further performs the steps of: and stopping leakage current detection if the battery does not have a voltage stabilizing event within a preset detection time period after the battery reaches a full charge state.
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 the 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: obtaining an aging degree parameter of a battery; determining voltage stabilization time length corresponding to the aging degree parameter according to a preset corresponding relation; the preset corresponding relation comprises voltage stabilization time periods corresponding to the parameters of different aging degrees.
In one embodiment, the computer program when executed by the processor further performs the steps of: after the battery reaches a full charge state, acquiring the current battery capacity of the battery; and comparing the current battery capacity with the preset initial battery capacity, and determining the aging degree parameter of the battery.
In one embodiment, the computer program when executed by the processor further performs the steps of: if the battery does not have a voltage stabilizing 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 will not be described herein.
Those skilled in the art will appreciate that implementing all or part of the above-described methods in accordance with the embodiments may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed may comprise the steps of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, or the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (12)
1. A leakage current detection method, the method comprising:
determining whether the battery reaches a full charge state at the current moment; the electronic equipment where the battery is located is in a connection state with the adapter at the current moment;
if so, acquiring a charging completion time of the battery when the battery reaches the full charge state and a voltage stabilization time of the battery after the battery reaches the full charge state, and judging whether a voltage stabilization event exists in the battery after delaying the voltage stabilization time at the charging completion time; wherein the voltage stabilization event characterizes a voltage stabilization of the battery within a preset range;
If so, determining that the battery has no leakage current.
2. The leakage current detection method according to claim 1, wherein the determining whether the battery has a voltage stabilizing 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 stabilizing condition or not;
if yes, determining that the battery has the voltage stabilizing event.
3. The leakage current detection method according to claim 2, wherein the determining whether the variation amplitude satisfies a preset voltage stabilization condition comprises:
and if the variation amplitude is smaller than a preset threshold value, determining that the variation amplitude meets a preset voltage stabilizing condition.
4. The leakage current detection method according to claim 2, wherein the determining whether the variation amplitude satisfies a preset voltage stabilization condition comprises:
determining the duration time that the voltage transformation amplitude of the battery voltage is smaller than a preset threshold value;
and if the duration time is longer than a preset duration time threshold value, determining that the change amplitude meets a preset voltage stabilizing condition.
5. The leakage current detection method according to any one of claims 2 to 4, characterized in that the method further comprises:
and stopping leakage current detection if the battery does not have the voltage stabilizing event within the preset detection duration after the battery reaches the full charge state.
6. The leakage current detection method according to any one of claims 2 to 4, wherein before the collecting the battery voltage of the battery at least two times, further comprising:
and detecting whether the electronic equipment is in a connection state with the adapter, and if so, executing the step of collecting the battery voltage of the battery.
7. The leakage current detection method according to any one of claims 1 to 4, wherein the obtaining a voltage stabilization period of the battery after reaching the full charge state includes:
obtaining an aging degree parameter of the battery;
determining voltage stabilization time length corresponding to the aging degree parameter according to a preset corresponding relation; the preset corresponding relation comprises voltage stabilization time periods corresponding to different aging degree parameters.
8. The leakage current detection method according to claim 7, wherein the obtaining the aging degree parameter 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 a preset initial battery capacity, and determining the aging degree parameter of the battery.
9. The leakage current detection method according to any one of claims 1 to 4, characterized in that the method further comprises:
and if the battery does not have the voltage stabilizing event, outputting battery leakage current early warning information.
10. A leakage current detection device, the device comprising:
the first determining module is used for determining whether the battery reaches a full charge state at the current moment; the electronic equipment where the battery is located is in a connection state with the adapter at the current moment;
the judging module is used for acquiring the charging completion time of the battery when the battery reaches the full charge state and the voltage stabilization time of the battery after the battery reaches the full charge state under the condition that the battery reaches the full charge state, and judging whether a voltage stabilization event exists in the battery after delaying the voltage stabilization time at the charging completion time; wherein the voltage stabilization event characterizes a voltage stabilization of the battery within a preset range;
And the second determining module is used for determining that the battery does not have leakage current under the condition that the battery has the voltage stabilizing event.
11. An electronic device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any one of claims 1 to 9 when the computer program is executed.
12. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 9.
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| JP7622079B6 (en) | 2021-12-29 | 2025-03-07 | 香港時代新能源科技有限公司 | Method and system for determining remaining battery charge time |
| CN115825758B (en) * | 2021-12-29 | 2023-11-17 | 宁德时代新能源科技股份有限公司 | Method and system for determining remaining time of battery charge |
| CN118646109A (en) * | 2022-02-17 | 2024-09-13 | 荣耀终端有限公司 | Electronic devices |
| CN114487914B (en) * | 2022-04-13 | 2022-08-19 | 荣耀终端有限公司 | Electronic equipment and leakage current testing method |
| CN115902490B (en) * | 2022-12-13 | 2023-09-29 | 珠海智融科技股份有限公司 | Detection method and device of charging equipment, electronic equipment and storage medium |
| CN116774060A (en) * | 2023-06-25 | 2023-09-19 | 天合光能股份有限公司 | Leakage detection method, device, equipment and battery preparation method for semi-finished batteries |
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