CN115939549A - Impedance monitoring method and device for battery, electronic equipment and readable storage medium - Google Patents
Impedance monitoring method and device for battery, electronic equipment and readable storage medium Download PDFInfo
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- CN115939549A CN115939549A CN202211591344.5A CN202211591344A CN115939549A CN 115939549 A CN115939549 A CN 115939549A CN 202211591344 A CN202211591344 A CN 202211591344A CN 115939549 A CN115939549 A CN 115939549A
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Abstract
The application discloses a battery impedance monitoring method and device, electronic equipment and a readable storage medium, and belongs to the technical field of electronic equipment. The impedance monitoring method of the battery is executed by electronic equipment, the electronic equipment comprises the battery, and the impedance monitoring method comprises the following steps: charging a battery of the electronic equipment by a preset current value; under the condition that the electric quantity of the battery reaches the target electric quantity, stopping charging the battery, acquiring a first battery voltage of the battery, and starting timing; acquiring a second battery voltage of the battery under the condition that the timing duration reaches the target duration; and determining the impedance of the battery according to the first battery voltage, the preset current value and the second battery voltage.
Description
Technical Field
The application belongs to the technical field of electronic equipment, and particularly relates to a battery impedance monitoring method and device, electronic equipment and a readable storage medium.
Background
In the related art, electronic devices such as mobile phones are powered by batteries such as lithium ion batteries, and as the number of charge and discharge cycles of the batteries increases, the capacity and safety of the batteries decrease, that is, the health of the batteries decreases.
At present, the electronic equipment predicts the capacity change of a battery through an electricity meter and a built-in capacity curve, and estimates the health degree change through the capacity change. After the battery is used for a certain time, the internal resistance of the battery may increase sharply under partial working conditions, which cannot be predicted by a preset capacity curve, causing misjudgment on the health of the battery, and thus the safety of the battery cannot be ensured.
Disclosure of Invention
The embodiment of the application aims to provide a battery impedance monitoring method, a battery impedance monitoring device, electronic equipment and a readable storage medium, which can monitor the impedance change of a battery in the using process and improve the use safety performance of the battery.
In a first aspect, an embodiment of the present application provides an impedance monitoring method for a battery, which is performed by an electronic device, where the electronic device includes the battery, and the impedance monitoring method includes:
charging a battery of the electronic equipment by a preset current value;
under the condition that the electric quantity of the battery reaches the target electric quantity, stopping charging the battery, acquiring a first battery voltage of the battery, and starting timing;
acquiring a second battery voltage of the battery under the condition that the timing duration reaches the target duration;
and determining the impedance of the battery according to the first battery voltage, the preset current value and the second battery voltage.
In a second aspect, an embodiment of the present application provides an impedance monitoring device for a battery, which is applied to an electronic device, where the electronic device includes the battery, and the impedance monitoring device includes:
the charging module is used for charging a battery of the electronic equipment by a preset current value;
the voltage detection module is used for stopping charging the battery and acquiring a first battery voltage of the battery under the condition that the electric quantity of the battery reaches a target electric quantity;
the timing module is used for starting timing;
the voltage detection module is used for acquiring a second battery voltage of the battery under the condition that the timing duration reaches the target duration;
and the impedance determining module is used for determining the impedance of the battery according to the first battery voltage, the preset current value and the second battery voltage.
In a third aspect, embodiments of the present application provide an electronic device, including a processor and a memory, where the memory stores a program or instructions executable on the processor, and the program or instructions, when executed by the processor, implement the steps of the method according to the first aspect.
In a fourth aspect, embodiments of the present application provide a readable storage medium on which a program or instructions are stored, which when executed by a processor implement the steps of the method according to the first aspect.
In a fifth aspect, embodiments of the present application provide a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a program or instructions to implement the steps of the method according to the first aspect.
In a sixth aspect, embodiments of the present application provide a computer program product, stored on a storage medium, for execution by at least one processor to implement a method as in the first aspect.
In the embodiment of the application, in the normal use process of the electronic device, after the electronic device is charged to the target electric quantity through the constant current by using the charging stage of the electronic device, the electronic device stops charging, and respectively records the current first battery voltage of the battery when the battery is charged to the target electric quantity and the second battery voltage of the battery after the battery is charged to the target electric quantity and the charging is stopped for the target time length.
Drawings
Fig. 1 shows a flow chart of a method of impedance monitoring of a battery according to an embodiment of the application;
fig. 2 shows an impedance spectrum of a battery according to an embodiment of the present application;
FIG. 3 shows a schematic diagram of an electronic device charging a battery according to an embodiment of the application;
fig. 4 is a block diagram showing a configuration of an impedance monitoring apparatus of a battery according to an embodiment of the present application;
FIG. 5 shows a block diagram of an electronic device according to an embodiment of the application;
fig. 6 is a schematic diagram of a hardware structure of an electronic device implementing the embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present disclosure.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
The following describes in detail an impedance monitoring method, an impedance monitoring device, an electronic device, and a readable storage medium of a battery according to embodiments of the present application with reference to the accompanying drawings.
In some embodiments of the present application, there is provided an impedance monitoring method for a battery, and fig. 1 shows a flowchart of the impedance monitoring method for a battery according to an embodiment of the present application, and as shown in fig. 1, the impedance monitoring method includes:
step 106, acquiring a second battery voltage of the battery under the condition that the timing duration reaches the target duration;
and step 108, determining the impedance of the battery according to the first battery voltage, the preset current value and the second battery voltage.
In the embodiment of the application, in the use process of the electronic device, when the electronic device is detected to be inserted into the charger, for example, when a user connects a mobile phone to the charger before sleeping, the electronic device initiates charging protocol communication to the charger, the charger is required to set the charging current to be a preset constant current value, and when the current value is detected to reach the constant current value, the electronic device initiates detection on impedance of the battery.
Specifically, the battery of the electronic device is charged at a constant current, for example, at a constant current of 2800mA, according to a preset current value, and the current capacity of the battery is monitored in real time.
When the current electric quantity of the battery reaches the preset target electric quantity, the battery is stopped to be charged, and the current first battery voltage of the battery is obtained. Because the electronic equipment is still connected with the charger, the energy consumption part of the electronic equipment is supplied with power through the outside of the charger, and therefore the battery is in a static state of neither charging nor discharging.
After the battery is kept still for the target time length, the electronic equipment acquires the current second battery voltage of the battery again. The polarization degree of the battery in the charging process is related to the impedance of the battery, the higher the impedance of the battery is, the higher the polarization degree in the charging process is, namely, a resistor device is connected in series in the battery, so that partial voltage can be generated in the battery, and the voltage of the battery detected by a system through an electricity meter is larger than the real voltage of the battery when the battery is charged, and the voltage of the battery can be reduced to the real voltage value after the charging is stopped and the battery is kept still for a period of time.
Therefore, based on the first battery voltage and the second battery voltage, the current internal impedance of the battery can be accurately calculated.
The embodiment of the application realizes effective monitoring of the impedance of the battery by designing the battery charging logic of the electronic equipment and utilizing the read data in the battery charging process without setting an extra hardware collector or detecting the battery through professional equipment, and can not influence the normal use of a user, thereby realizing the impedance detection of the battery with low cost, high efficiency and reliability and improving the use safety performance of the battery.
In some embodiments of the present application, determining the impedance of the battery from the first battery voltage, the preset current value, and the second battery voltage comprises:
determining a difference between the first battery voltage and the second battery voltage;
and determining the impedance of the battery according to the quotient of the difference value and the preset current value.
In the embodiment of the present application, fig. 2 shows an impedance spectrum of a battery according to the embodiment of the present application, and as shown in fig. 2, the total impedance of the battery satisfies:
R total ＝Rs+Rct+Rcp；
wherein R is total The resistance is the total impedance of the battery, rs is ohmic impedance, and specifically includes a current collector, a tab, an electrode material, electrolyte, a diaphragm resistor and contact resistance of other parts of the battery, rct is electrochemical impedance, specifically resistance of charge exchange generated by solid-liquid interface reaction of the electrode, rcp is concentration polarization impedance, taking a lithium ion battery as an example, namely, the concentration difference of lithium ions forms overpotential in the solid-phase and liquid-phase transmission processes, and hi can be understood that (Li +) diffusion speed is smaller than the impedance caused by the electrochemical reaction speed.
The current laboratory test method can accurately measure and obtain Rs and Rct, but the size of Rcp is difficult to accurately measure.
In contrast, in the embodiment of the application, the charging data of the battery is recorded in the charging process of the battery. Specifically, the impedance of the battery may affect the polarization degree of the battery during charging, and if the impedance of the battery is higher, the polarization degree during charging is greater, resulting in generation of a voltage division inside the battery. FIG. 3 is a schematic diagram of an electronic device charging a battery, such as the battery shown in FIG. 3, according to an embodiment of the present applicationHas an impedance of R total When the current that the electronic equipment charges the battery with constant current is I, the impedance of the battery satisfies the following relation:
V 1 ＝V 2 +I×R total ；-----(1)
wherein, V 1 Is the battery voltage detected when the battery is charged to the target charge, i.e. the first battery voltage, V 2 The voltage of the battery detected after the battery is placed for a target time length, namely the voltage of a second battery, I is a constant current value during battery charging, namely a preset current value, R total Is the impedance of the battery.
The following relationship can be obtained by transforming the above formula (1):
R total ＝(V 2 -V 1 )÷I；
therefore, the current impedance of the battery can be calculated according to the quotient of the difference value of the first battery voltage and the second battery voltage and the preset current value.
According to the method and the device, the current impedance of the battery is calculated according to the first battery voltage when the battery is charged to the target electric quantity and the second battery voltage after the battery is kept stand for the target time length, so that the accurate calculation of the impedance of the battery is realized, the accurate monitoring of the impedance of the battery is realized under the condition that hardware is not added, and the use safety performance of the battery is improved.
In some embodiments of the present application, the range of the target charge is: greater than or equal to 50% and less than or equal to 100% of the total charge of the battery.
In the embodiment of the application, after the electronic device charges the battery to 50% of electric quantity to 100% of electric quantity in a constant current manner through the preset current, the impedance R of the battery is calculated according to the charged first battery voltage, the settled second battery voltage and the preset current total 。
The experimental data obtained by using a fresh battery 1# (a battery with 100% health), a fresh battery 2# (a battery with 100% health), an aged battery 1# (a battery with a total capacity attenuated to 80% after 1000 cycles of a charge/discharge cycle), and an aged battery 2# (a battery with a total capacity attenuated to 82% after 1000 cycles of a charge/discharge cycle) are shown in table 1:
TABLE 1
The impedance of the battery is calculated by charging the battery to 50% -100%, the calculation result is accurate, the influence on normal use of the mobile phone by a user is small, and the impedance calculation of the battery without sense is facilitated.
In some embodiments of the present application, the range of the target charge amount is: greater than or equal to 65% and less than or equal to 75% of the total charge of the battery.
In the embodiment of the application, after the electronic device charges the battery to 65% to 75% of electric quantity in a constant current manner through the preset current, the impedance R of the battery is calculated according to the charged first battery voltage, the settled second battery voltage and the preset current total 。
The experimental data obtained from fresh battery 1# (a battery with 100% health), fresh battery 2# (a battery with 100% health), aged battery 1# (a battery with 80% of total capacity after 1000 cycles of charge and discharge cycle), and aged battery 2# (a battery with 82% of total capacity after 1000 cycles of charge and discharge cycle) are shown in table 2:
TABLE 2
This application is through charging the battery to 65% to 75%, calculates the impedance of battery, avoids battery power to reach the upper limit to avoid battery voltage to reach upper limit voltage, can guarantee that the battery is in more stable state relatively, the computational result is more accurate, is favorable to realizing the impedance control of accurate battery.
In some embodiments of the present application, aging of a battery is simulated in a laboratory, and a verification experiment is performed, specifically, a fresh battery 1# (a battery with a health degree of 100%) and a fresh battery 2# (a battery with a health degree of 100%) are selected, and 2 other fresh batteries are selected, fully charged, and then stored in an environment with a temperature of 85 ℃ for 4 hours, and then subjected to an experiment to form an aged battery 1# and an aged battery 2#, and the obtained experimental data are shown in table 3:
TABLE 3
Experiments prove that the impedance calculation method provided by the embodiment of the application is reliable and can realize accurate monitoring of the impedance of the battery.
In some embodiments of the present application, the target duration ranges from: greater than or equal to 13 minutes and less than or equal to 17 minutes.
In the embodiment of the application, after the battery is charged to the target electric quantity, the battery charging is stopped, the first battery voltage of the battery at the moment is recorded, timing is started, when the timing duration reaches 13-17 minutes, the battery is determined to be stable, the second battery voltage of the battery is recorded at the moment, and the impedance of the battery can be accurately calculated according to the first battery voltage, the second battery voltage and the preset current during the battery charging.
In some embodiments, the target duration may be selected to be 15 minutes.
According to the embodiment of the application, the current first battery voltage is recorded after the battery is charged, the second battery voltage after the battery is placed still is recorded after the battery is placed still for 13-17 minutes, the impedance of the battery can be accurately calculated based on the first battery voltage and the second battery voltage, the impedance of the battery can be accurately monitored by electronic equipment under the condition that hardware is not additionally arranged, and the use safety performance of the battery is improved.
In some embodiments of the present application, before the electronic device charges the battery with the preset current value, the impedance monitoring method further includes:
acquiring the number of charge and discharge cycles of the battery;
and charging the battery by a preset current value under the condition that the number of the charging and discharging cycles reaches the target number of cycles.
In the embodiment of the application, the aging degree of a fresh battery, such as a battery with a small number of charge and discharge cycles, is low, and the impedance change of the battery is small, so that the impedance of the battery does not need to be paid much attention at this time. With the use of the electronic device, the electronic device continuously records the charging and discharging times of the battery in each charging and discharging period.
When the charging and discharging times of the battery reach the target cycle times, the electronic equipment judges that the service time of the battery is long and the possibility of internal resistance increase, at the moment, the electronic equipment performs the step of determining the impedance of the battery, specifically, the electronic equipment performs constant-current charging on the battery, acquires a first battery voltage of the current battery after the battery is charged to the target electric quantity, stops charging the battery, acquires a second battery voltage after the battery is static for the target duration, and calculates the impedance of the battery based on the first battery voltage, the second battery voltage and a preset current value during charging.
It can be understood that after the impedance of the battery is calculated once, the impedance of the battery can be calculated again after a preset charging and discharging period, so as to reduce the influence on the use of the user. And after the charging and discharging times of the battery reach the target cycle times, the impedance of the battery can be calculated every time of charging, so that the safety of the battery is improved.
This application monitors the impedance of battery through reaching the cycle number of predetermineeing after the battery charge-discharge number of times, can carry out accurate prediction to the battery risk that the impedance sudden change of battery leads to, improves the safety in utilization performance of battery.
In some embodiments of the present application, after determining the impedance of the battery according to the first battery voltage, the preset current value, and the second battery voltage, the impedance monitoring method further includes:
and determining the health degree of the battery according to the comparison result of the impedance of the battery and a preset impedance threshold value.
In the embodiment of the present application, impedance thresholds may be preset in the electronic device, the number of the impedance thresholds may be 1 or more, and each impedance threshold corresponds to the health degree of one battery.
For example, when the monitored impedance of the battery is less than or equal to the impedance threshold R1, the health of the battery is determined to be 100%; when the monitored impedance of the battery is larger than an impedance threshold value R1 and is smaller than or equal to R2, determining that the health degree of the battery is 95%; when the monitored impedance of the battery is larger than an impedance threshold value R2 and is smaller than or equal to R3, the health degree of the battery is determined to be 90%, and the like.
According to the embodiment of the application, the impedance of the battery is monitored in real time, the health degree of the battery is judged according to the comparison result of the monitored impedance of the battery and the preset impedance threshold value, more accurate monitoring of the health degree of the battery is realized, and the use safety performance of the battery of the electronic equipment is improved.
According to the impedance monitoring method of the battery, the execution main body can be an impedance monitoring device of the battery. In the embodiment of the present application, a method for performing impedance monitoring of a battery by using an impedance monitoring device of a battery is taken as an example, and the impedance monitoring device of a battery provided in the embodiment of the present application is described.
In some embodiments of the present application, an impedance monitoring device for a battery is provided, and fig. 4 shows a block diagram of the impedance monitoring device for a battery according to an embodiment of the present application, and as shown in fig. 4, an impedance monitoring device 400 includes:
a charging module 402, configured to charge a battery of an electronic device with a preset current value;
a voltage detection module 404, configured to stop charging the battery and obtain a first battery voltage of the battery when the electric quantity of the battery reaches a target electric quantity;
a timing module 406 for starting timing;
the voltage detection module 404 is further configured to obtain a second battery voltage of the battery when the timed duration reaches the target duration;
the impedance determination module 408 is configured to determine an impedance of the battery according to the first battery voltage, the preset current value, and the second battery voltage.
The embodiment of the application realizes effective monitoring of the impedance of the battery by designing the battery charging logic of the electronic equipment and utilizing the read data in the battery charging process without setting an extra hardware collector or detecting the battery through professional equipment, and can not influence the normal use of a user, thereby realizing the impedance detection of the battery with low cost, high efficiency and reliability and improving the use safety performance of the battery.
In some embodiments of the present application, the impedance determination module is specifically configured to:
determining a difference between the first battery voltage and the second battery voltage;
and determining the impedance of the battery according to the quotient of the difference value and the preset current.
According to the method and the device, the current impedance of the battery is calculated according to the first battery voltage when the battery is charged to the target electric quantity and the second battery voltage after the battery is kept stand for the target time length, so that the accurate calculation of the impedance of the battery is realized, the accurate monitoring of the impedance of the battery is realized under the condition that hardware is not added, and the use safety performance of the battery is improved.
In some embodiments of the present application, the range of the target charge is: greater than or equal to 50% and less than or equal to 100% of the total charge of the battery.
According to the method and the device, the battery is charged to 50-100% to calculate the impedance of the battery, the calculation result is accurate, the influence on normal use of a mobile phone by a user is small, and the impedance calculation of the battery without inductance is facilitated.
In some embodiments of the present application, the range of the target charge is: greater than or equal to 65% and less than or equal to 75% of the total charge of the battery.
This application is through charging the battery to 65% to 75%, calculates the impedance of battery, avoids battery power to reach the upper limit to avoid battery voltage to reach upper limit voltage, can guarantee that the battery is in more stable state relatively, the computational result is more accurate, is favorable to realizing the impedance control of accurate battery.
In some embodiments of the present application, the target duration ranges from: greater than or equal to 13 minutes and less than or equal to 17 minutes.
According to the embodiment of the application, the current first battery voltage is recorded after the battery is charged, the second battery voltage after the battery is placed still is recorded after the battery is placed still for 13-17 minutes, the impedance of the battery can be accurately calculated based on the first battery voltage and the second battery voltage, the electronic equipment can accurately monitor the impedance of the battery under the condition that hardware is not additionally arranged, and the use safety performance of the battery is improved.
In some embodiments of the present application, the impedance monitoring device further comprises:
the acquisition module is used for acquiring the number of charge and discharge cycles of the battery;
and the charging module is specifically used for charging the battery by the electronic equipment at a preset current value under the condition that the charging and discharging cycle number reaches the target cycle number.
This application monitors the impedance of battery through reaching the cycle number of predetermineeing after the battery charge-discharge number of times, can carry out accurate prediction to the battery risk that the impedance sudden change of battery leads to, improves the safety in utilization performance of battery.
In some embodiments of the present application, the impedance monitoring device further comprises:
and the health degree determining module is used for determining the health degree of the battery according to the comparison result of the impedance of the battery and a preset impedance threshold.
According to the embodiment of the application, the impedance of the battery is monitored in real time, the health degree of the battery is judged according to the comparison result of the monitored impedance of the battery and the preset impedance threshold value, more accurate monitoring of the health degree of the battery is realized, and the use safety performance of the battery of the electronic equipment is improved.
The impedance monitoring device of the battery in the embodiment of the present application may be an electronic device, and may also be a component in the electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal, or may be a device other than a terminal. The electronic Device may be, for example, a Mobile phone, a tablet computer, a notebook computer, a palm top computer, a vehicle-mounted electronic Device, a Mobile Internet Device (MID), an Augmented Reality (AR)/Virtual Reality (VR) Device, a robot, a wearable Device, an ultra-Mobile personal computer (UMPC), a netbook or a Personal Digital Assistant (PDA), and the like, and may also be a server, a Network Attached Storage (Network Attached Storage, NAS), a personal computer (NAS), a Television (TV), a teller machine, a self-service machine, and the like, and the embodiments of the present application are not limited in particular.
The impedance monitoring device of the battery in the embodiment of the present application may be a device having an operating system. The operating system may be an Android operating system (Android), an iOS operating system, or other possible operating systems, which is not specifically limited in the embodiments of the present application.
The impedance monitoring device for the battery provided by the embodiment of the application can realize each process realized by the method embodiment, and is not repeated here for avoiding repetition.
Optionally, an electronic device is further provided in an embodiment of the present application, fig. 5 shows a block diagram of a structure of the electronic device according to the embodiment of the present application, and as shown in fig. 5, the electronic device 500 includes a processor 502, a memory 504, and a program or an instruction stored in the memory 504 and executable on the processor 502, and when the program or the instruction is executed by the processor 502, the processes of the foregoing method embodiments are implemented, and the same technical effect can be achieved, and details are not repeated here to avoid repetition.
It should be noted that the electronic devices in the embodiments of the present application include the mobile electronic device and the non-mobile electronic device described above.
Fig. 6 is a schematic diagram of a hardware structure of an electronic device implementing an embodiment of the present application.
The electronic device 600 includes, but is not limited to: radio frequency unit 601, network module 602, audio output unit 603, input unit 604, sensor 605, display unit 606, user input unit 607, interface unit 608, memory 609, and processor 610.
Those skilled in the art will appreciate that the electronic device 600 may further comprise a power supply (e.g., a battery) for supplying power to various components, and the power supply may be logically connected to the processor 610 through a power management system, so as to implement functions of managing charging, discharging, and power consumption through the power management system. The electronic device structure shown in fig. 6 does not constitute a limitation of the electronic device, and the electronic device may include more or less components than those shown, or combine some components, or arrange different components, and thus, the description is omitted here.
The processor 610 is configured to charge a battery of the electronic device with a preset current value; under the condition that the electric quantity of the battery reaches the target electric quantity, the electronic equipment stops charging the battery, and a first battery voltage of the battery is obtained; starting timing; under the condition that the timing duration reaches the target duration, the electronic equipment acquires a second battery voltage of the battery; and determining the impedance of the battery according to the first battery voltage, the preset current value and the second battery voltage.
The embodiment of the application utilizes the read data in the battery charging process through designing the battery charging logic of the electronic equipment, realizes effective monitoring of the impedance of the battery, does not need to set an extra hardware collector, does not need to detect the battery through professional equipment, does not influence the normal use of a user, realizes the impedance detection of the battery with low cost, high efficiency and reliability, and improves the use safety performance of the battery.
Optionally, the processor 610 is further configured to determine a difference between the first battery voltage and the second battery voltage; and determining the impedance of the battery according to the quotient of the difference value and the preset current.
According to the method and the device, the current impedance of the battery is calculated according to the first battery voltage when the battery is charged to the target electric quantity and the second battery voltage after the battery is kept stand for the target time length, so that the accurate calculation of the impedance of the battery is realized, the accurate monitoring of the impedance of the battery is realized under the condition that hardware is not added, and the use safety performance of the battery is improved.
Optionally, the range of the target electric quantity is: greater than or equal to 50% and less than or equal to 100% of the total charge of the battery.
The impedance of the battery is calculated by charging the battery to 50% -100%, the calculation result is accurate, the influence on normal use of the mobile phone by a user is small, and the impedance calculation of the battery without sense is facilitated.
Optionally, the range of the target electric quantity is: greater than or equal to 65% and less than or equal to 75% of the total charge of the battery.
This application is through charging the battery to 65% to 75%, calculates the impedance of battery, avoids battery power to reach the upper limit to avoid battery voltage to reach upper limit voltage, can guarantee that the battery is in more stable state relatively, the computational result is more accurate, is favorable to realizing the impedance control of accurate battery.
Optionally, the range of the target duration is: greater than or equal to 13 minutes and less than or equal to 17 minutes.
According to the embodiment of the application, the current first battery voltage is recorded after the battery is charged, the second battery voltage after the battery is placed still is recorded after the battery is placed still for 13-17 minutes, the impedance of the battery can be accurately calculated based on the first battery voltage and the second battery voltage, the electronic equipment can accurately monitor the impedance of the battery under the condition that hardware is not additionally arranged, and the use safety performance of the battery is improved.
Optionally, the processor 610 is further configured to obtain a number of charge and discharge cycles of the battery; and under the condition that the number of the charging and discharging cycles reaches the target number of cycles, the electronic equipment charges the battery at a preset current value.
This application monitors the impedance of battery through reaching the cycle number of predetermineeing after the battery charge-discharge number of times, can carry out accurate prediction to the battery risk that the impedance sudden change of battery leads to, improves the safety in utilization performance of battery.
Optionally, the processor 610 is further configured to determine the health degree of the battery according to the comparison result of the impedance of the battery and the preset impedance threshold.
According to the embodiment of the application, the impedance of the battery is monitored in real time, the health degree of the battery is judged according to the comparison result of the monitored impedance of the battery and the preset impedance threshold value, more accurate monitoring of the health degree of the battery is realized, and the use safety performance of the battery of the electronic equipment is improved.
It is to be understood that, in the embodiment of the present application, the input Unit 604 may include a Graphics Processing Unit (GPU) 6041 and a microphone 6042, and the Graphics Processing Unit 6041 processes image data of a still picture or a video obtained by an image capturing apparatus (such as a camera) in a video capture mode or an image capture mode. The display unit 606 may include a display panel 6061, and the display panel 6061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 607 includes at least one of a touch panel 6071 and other input devices 6072. A touch panel 6071, also referred to as a touch screen. The touch panel 6071 may include two parts of a touch monitoring device and a touch controller. Other input devices 6072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.
The memory 609 may be used to store software programs as well as various data. The memory 609 may mainly include a first storage area storing a program or an instruction and a second storage area storing data, wherein the first storage area may store an operating system, an application program or an instruction (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 609 may include volatile memory or nonvolatile memory, or the memory 609 may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. The volatile Memory may be a Random Access Memory (RAM), a Static Random Access Memory (Static RAM, SRAM), a Dynamic Random Access Memory (Dynamic RAM, DRAM), a Synchronous Dynamic Random Access Memory (Synchronous DRAM, SDRAM), a Double Data Rate Synchronous Dynamic Random Access Memory (Double Data Rate SDRAM, ddr SDRAM), an Enhanced Synchronous SDRAM (ESDRAM), a Synchronous Link DRAM (SLDRAM), and a Direct Memory bus RAM (DRRAM). The memory 609 in the embodiments of the subject application include, but are not limited to, these and any other suitable types of memory.
The embodiments of the present application further provide a readable storage medium, where a program or an instruction is stored, and when the program or the instruction is executed by a processor, the program or the instruction implements the processes of the foregoing method embodiments, and can achieve the same technical effects, and in order to avoid repetition, details are not repeated here.
The processor is the processor in the electronic device in the above embodiment. Readable storage media, including computer-readable storage media, such as computer Read-Only Memory (ROM), random Access Memory (RAM), magnetic or optical disks, etc.
The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to execute a program or an instruction to implement the processes of the foregoing method embodiment, and the same technical effects can be achieved.
It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as system-on-chip, system-on-chip or system-on-chip, etc.
Embodiments of the present application provide a computer program product, where the program product is stored in a storage medium, and the program product is executed by at least one processor to implement the processes of the foregoing method embodiments, and achieve the same technical effects, and in order to avoid repetition, details are not described here again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a component of' 8230; \8230;" does not exclude the presence of another like element in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, or a network device) to execute the method of the embodiments of the present application.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the present embodiments are not limited to those precise embodiments, which are intended to be illustrative rather than restrictive, and that various changes and modifications may be effected therein by one skilled in the art without departing from the scope of the appended claims.
Claims (10)
1. An impedance monitoring method of a battery, performed by an electronic device, the electronic device including the battery, the impedance monitoring method comprising:
charging a battery of the electronic equipment by a preset current value;
under the condition that the electric quantity of the battery reaches the target electric quantity, stopping charging the battery, acquiring a first battery voltage of the battery, and starting timing;
acquiring a second battery voltage of the battery under the condition that the timing duration reaches a target duration;
and determining the impedance of the battery according to the first battery voltage, the preset current value and the second battery voltage.
2. The impedance monitoring method of claim 1, wherein determining the impedance of the battery based on the first battery voltage, the preset current value, and the second battery voltage comprises:
determining a difference between the first battery voltage and the second battery voltage;
and determining the impedance of the battery according to the quotient of the difference value and the preset current value.
3. The impedance monitoring method of claim 1, wherein the target electrical quantity ranges from: greater than or equal to 50% of the total charge of the battery and less than or equal to 100% of the total charge of the battery.
4. The impedance monitoring method of claim 1, wherein the range of the target electrical quantity is: greater than or equal to 65% and less than or equal to 75% of the total charge of the battery.
5. The impedance monitoring method according to any one of claims 1 to 4, wherein the target time period ranges from: greater than or equal to 13 minutes and less than or equal to 17 minutes.
6. The impedance monitoring method according to any one of claims 1 to 4, wherein before the electronic device charges the battery at a preset current value, the impedance monitoring method further comprises:
acquiring the number of charging and discharging cycles of the battery;
and charging the battery by using a preset current value under the condition that the number of the charging and discharging cycles reaches the target number of cycles.
7. The impedance monitoring method according to any one of claims 1 to 4, further comprising, after the determining the impedance of the battery from the first battery voltage, the preset current value, and the second battery voltage:
and determining the health degree of the battery according to the comparison result of the impedance of the battery and a preset impedance threshold value.
8. An impedance monitoring device of a battery is applied to electronic equipment, and is characterized in that the electronic equipment comprises the battery, and the impedance monitoring device comprises:
the charging module is used for charging a battery of the electronic equipment by a preset current value;
the voltage detection module is used for stopping the electronic equipment from charging the battery under the condition that the electric quantity of the battery reaches a target electric quantity, and acquiring a first battery voltage of the battery;
the timing module is used for starting timing;
the voltage detection module is further configured to, when the timing duration reaches a target duration, the electronic device obtain a second battery voltage of the battery;
and the impedance determining module is used for determining the impedance of the battery according to the first battery voltage, the preset current value and the second battery voltage.
9. An electronic device comprising a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions when executed by the processor implementing the steps of the impedance monitoring method of any one of claims 1 to 7.
10. A readable storage medium, characterized in that the readable storage medium has stored thereon a program or instructions which, when executed by a processor, implement the steps of the impedance monitoring method according to any one of claims 1 to 7.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116243197A (en) * | 2023-05-12 | 2023-06-09 | 国民技术股份有限公司 | Method and device for predicting SOH of battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116243197A (en) * | 2023-05-12 | 2023-06-09 | 国民技术股份有限公司 | Method and device for predicting SOH of battery |
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