CN113036710A - Method and device for acquiring battery state, battery, electronic equipment and storage medium - Google Patents
Method and device for acquiring battery state, battery, electronic equipment and storage medium Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
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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]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3835—Arrangements for monitoring battery or accumulator variables, e.g. SoC involving only voltage measurements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
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Abstract
The disclosure relates to a method and a device for acquiring a battery state, a battery, an electronic device and a storage medium. The method comprises the following steps: after the battery is switched to a standing mode, acquiring the voltage of an electric core in the battery to obtain a first voltage; detecting the current in the precision resistor in the standing mode to obtain standing current; when the standing current meets a preset condition, continuously acquiring the voltage of the battery cell to obtain a second voltage; when the difference voltage of the second voltage and the first voltage is smaller than a difference threshold value, determining that the battery state is a normal state; and when the difference voltage exceeds the difference threshold, determining that the battery state is an abnormal state. The embodiment can perform single fault test and internal short circuit test on the battery, and the protection performance of the battery is improved under the condition of meeting the LPS requirement.
Description
Technical Field
The present disclosure relates to the field of battery protection technologies, and in particular, to a method and an apparatus for obtaining a battery state, a battery, an electronic device, and a storage medium.
Background
At present, a battery in an electronic device is provided with a protection circuit, see fig. 1, and two sets of protection circuits are provided in the battery: the protection circuit 1 comprises a precision resistor 3 and a protection switching device 5; the protection circuit 2 includes a precision resistor 4 and a protection switching device 6. In practical application, the protection circuit 1 and the protection circuit 2 can be used for testing single fault of the battery, so that the requirement of safety regulation LPS (limit power source) is met.
However, when the internal short circuit occurs in the battery electric core 8, the conventional protection circuit cannot detect the internal short circuit, so that the protection function is limited.
Disclosure of Invention
The present disclosure provides a method and apparatus for obtaining a battery status, a battery, an electronic device, and a storage medium, to solve the deficiencies of the related art.
According to a first aspect of the embodiments of the present disclosure, there is provided a method for obtaining a battery state, in which a protection circuit is disposed, the protection circuit including a precision resistor, the method including:
after the battery is switched to a standing mode, acquiring the voltage of an electric core in the battery to obtain a first voltage;
detecting the current in the precision resistor in the standing mode to obtain standing current;
when the standing current meets a preset condition, continuously acquiring the voltage of the battery cell to obtain a second voltage;
when the difference voltage of the second voltage and the first voltage is smaller than a difference threshold value, determining that the battery state is a normal state; and when the difference voltage exceeds the difference threshold, determining that the battery state is an abnormal state.
Optionally, switching the battery to a rest mode comprises:
detecting the current of the precision resistor in an initial mode to obtain an initial current; the initial mode includes one of: a charging mode or a discharging mode;
and when the initial current meets the preset condition, switching the battery from the initial mode to a standing mode.
Optionally, the determining that the initial current satisfies the preset condition includes:
acquiring a current threshold and a duration threshold in the initial mode;
judging whether the initial current is smaller than the current threshold value;
recording a duration when the initial current is less than the current threshold;
and when the duration exceeds the duration threshold, determining that the initial current meets the preset condition.
Optionally, after determining that the battery state is an abnormal state, the method further includes:
enabling a designated pin of the battery fuel gauge to turn off a protection switching device electrically connected to the designated pin within the battery.
According to a second aspect of the embodiments of the present disclosure, there is provided an apparatus for obtaining a state of a battery, in which a protection circuit is disposed, the protection circuit including a precision resistor, the apparatus including:
the first voltage acquisition module is used for acquiring the voltage of an electric core in the battery after the battery is switched to a standing mode to obtain a first voltage;
the standing current obtaining module is used for detecting the current in the precision resistor in the standing mode to obtain a standing current;
the second voltage acquisition module is used for continuously acquiring the voltage of the battery cell to obtain a second voltage when the standing current meets a preset condition;
the battery state determining module is used for determining that the battery state is a normal state when the difference voltage of the second voltage and the first voltage is smaller than a difference threshold value; and when the difference voltage exceeds the difference threshold, determining that the battery state is an abnormal state.
Optionally, the first voltage obtaining module includes:
the initial current acquisition unit is used for detecting the current of the precision resistor in an initial mode to obtain an initial current; the initial mode includes one of: a charging mode or a discharging mode;
and the standing mode switching unit is used for switching the battery from the initial mode to a standing mode when the initial current meets the preset condition.
Optionally, the still mode switching unit includes:
the acquisition subunit is used for acquiring a current threshold and a duration threshold in the initial mode;
the judging subunit is used for judging whether the initial current is smaller than the current threshold value;
the recording subunit is used for recording the duration when the initial current is smaller than the current threshold;
and the determining subunit is configured to determine that the initial current satisfies the preset condition when the duration exceeds the duration threshold.
Optionally, after determining that the battery state is an abnormal state, the apparatus further includes:
and the appointed pin enabling module is used for enabling the appointed pin of the battery fuel gauge according to the trigger signal of the battery state determining module so as to close a protection switch device which is electrically connected with the appointed pin in the battery.
According to a third aspect of the embodiments of the present disclosure, there is provided a battery, in which a set of protection circuits is disposed; the group of protection circuits consists of a precision resistor and a protection chip, wherein the precision resistor is electrically connected with the battery cell and used for detecting the current of the battery cell.
Optionally, a battery fuel gauge is also included; a microprocessor and a memory are arranged in the battery fuel gauge, the memory stores a memory of executable instructions of the microprocessor, and the microprocessor is configured to execute the executable instructions in the memory to realize the steps of the method of any one of the first aspect.
According to a fourth aspect of embodiments of the present disclosure, there is provided an electronic device including the battery according to the third aspect.
According to a fifth aspect of embodiments of the present disclosure, there is provided a readable storage medium having stored thereon executable instructions that, when executed by a microprocessor, implement the steps of the method of any one of the first aspects.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
as can be seen from the above embodiments, in the embodiment of the present disclosure, after the battery is switched to the standing mode, the voltage of the electric core in the battery is obtained, so as to obtain a first voltage; then, detecting the current in the precision resistor in the standing mode to obtain a standing current; then, when the standing current meets a preset condition, continuously acquiring the voltage of the battery cell to obtain a second voltage; finally, when the difference voltage of the second voltage and the first voltage is smaller than a difference threshold value, determining that the battery state is a normal state; and when the difference voltage exceeds the difference threshold, determining that the battery state is an abnormal state. In the embodiment, the battery is switched to the standing mode to obtain two voltages, and the two voltages are used for determining whether the battery is in a normal state or an abnormal state, for example, the battery does not discharge in the standing mode, the two voltages are equal or similar, that is, the difference voltage is smaller than the difference threshold value, and the battery is determined to be in the normal state; for another example, if the battery is in the standing mode, if an internal short circuit may occur, the voltage may continuously decrease, that is, the difference voltage may be greater than the difference threshold, it is determined that the battery is in an abnormal state, a single fault test and an internal short circuit test may be performed on the battery, and the protection performance of the battery is improved under the condition that the LPS requirement is met.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic view of a battery structure in the related art.
Fig. 2 is a schematic diagram illustrating a structure of a battery according to an exemplary embodiment.
FIG. 3 is a flow chart illustrating a method of obtaining battery status in accordance with an exemplary embodiment.
FIG. 4 is a flow chart illustrating switching a battery to a rest mode according to an exemplary embodiment.
FIG. 5 is a flow chart illustrating a determination that an initial current satisfies a predetermined condition according to an exemplary embodiment.
FIG. 6 is a flow chart illustrating another method of obtaining battery status in accordance with an exemplary embodiment.
Fig. 7 to 10 are block diagrams illustrating another apparatus for acquiring a battery state according to an exemplary embodiment.
FIG. 11 is a block diagram illustrating an electronic device in accordance with an example embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Rather, they are merely examples of devices consistent with certain aspects of the present disclosure as recited in the claims below.
At present, a battery in an electronic device is provided with a protection circuit, and two groups of protection circuits are arranged in the battery shown in fig. 1: the protection circuit 1 comprises a precision resistor 3 and a protection switching device 5; the protection circuit 2 includes a precision resistor 4 and a protection switching device 6. In practical application, the protection circuit 1 and the protection circuit 2 can be used for testing single fault of the battery, so that the requirement of safety regulation LPS (limit power source) is met. However, when the internal short circuit occurs in the battery electric core 8, the conventional protection circuit cannot detect the internal short circuit, so that the protection function is limited.
In order to solve the above technical problem, an embodiment of the present disclosure provides a method for obtaining a battery state, in order to implement the method, the embodiment of the present disclosure first performs appropriate adjustment on a structure of the battery shown in fig. 1, and fig. 2 is a schematic structural diagram of the battery according to an exemplary embodiment. In the battery structure shown in fig. 2 in this embodiment, a connection line between two devices indicates that there is an electrical connection relationship between the two devices, and does not indicate that there is only one connection line.
Referring to fig. 2, the battery provided in this embodiment includes a set of protection circuits, which are composed of a precision resistor 3 and a protection chip 1. Based on the connection of the precision resistor 3 and one end of the battery cell 8, in the charging or discharging process of the battery cell 8, the precision resistor 3 may be used to detect the current of the battery cell 8.
For example, the protection chip 1 may obtain the voltage at the CS terminal of the precision resistor 3, and calculate the current on the precision resistor 3 according to the voltage on the precision resistor 3 and the resistance value of the precision resistor 3, and determine whether the charging or discharging circuit is over-current according to the current. The protection switching device 5 may be turned off at the time of overcurrent, thereby protecting the battery cell 8. Similarly, the battery fuel gauge 7 can calculate the current on the precision resistor 3 to determine whether the charging or discharging circuit is over-current. The protection switching device 6 can be turned off during overcurrent, so that the battery cell 8 is protected.
In addition, the protection chip 1 may further obtain a voltage of the battery electric core 8, compare the voltage with a voltage threshold, and determine whether the charging or discharging loop is over-voltage. The protective switching device 5 can be switched off in the event of an overvoltage, so that the battery cell 8 is protected. Similarly, the battery fuel gauge 7 may also obtain the voltage of the battery cell 8, compare the voltage with a voltage threshold, and determine whether the charging or discharging circuit is over-voltage. The protective switching device 6 can be switched off in the event of an overvoltage, so that the battery cell 8 is protected.
It should be noted that, in this embodiment, the working process of the protection circuit in the battery is only schematically described, and may be appropriately adjusted according to a specific scenario in practical applications.
Based on the battery shown in fig. 2, an embodiment of the present disclosure further provides a method for obtaining a battery status, and fig. 3 is a flowchart illustrating a method for obtaining a battery status according to an exemplary embodiment. Referring to fig. 3, a method for acquiring a battery state, which may be applied to a battery fuel gauge, includes steps 301 to 304, wherein:
in step 301, after the battery is switched to the standing mode, the voltage of the electric core in the battery is obtained to obtain a first voltage.
In this embodiment, the battery may include a plurality of operating modes, such as a rest mode, a charging mode, or a discharging mode, which may be set according to a specific scenario, and is not limited herein.
In this embodiment, when the battery is in an initial mode, the initial mode includes one of a charging mode or a discharging mode, the switching of the battery to the resting mode may be performed, referring to fig. 4, including: in step 401, the current of the precision resistor 3 can be detected in the initial mode, which is referred to as the initial current for distinction. In step 402, whether the initial current meets a preset condition may be turned off, and when the preset condition is met, the battery may be switched from the initial mode to the rest mode. When the preset condition is not satisfied, the current of the precision resistor 3 can be re-detected.
In an embodiment, the determining whether the initial current satisfies the predetermined condition, referring to fig. 5, may include: in step 501, a current threshold and a duration threshold in an initial mode may be obtained. For example, when the initial mode is the charging mode, the current threshold is Rest ChgI; when the initial mode is the discharging mode, the current threshold is Rest DsgI. As another example, the duration threshold may be Rest Time. It should be noted that the current threshold and the duration threshold may be set according to a specific scenario, and are not limited herein. In step 502, it may be determined whether the initial current is less than a current threshold. In step 503, when the initial current is less than the current threshold, recording the duration; and returning to detect the initial current again when the initial current is larger than the current threshold. In step 504, when the duration exceeds the duration threshold, determining that the initial current meets a preset condition; and when the duration is less than the duration threshold, determining that the initial current does not meet the preset condition, and returning to detect the initial current again.
When the initial mode is the charging mode, for example, the initial Current Charge Current of the precision resistor 3 is detected, and the magnitudes of the initial Current Charge Current and the charging Current threshold Rest ChgI are determined. And when the Charge Current is smaller than the Rest ChgI, starting to record the duration Time, and when the Charge Current is larger than the Rest ChgI, re-detecting the Charge Current. When Delay Time exceeds Rest Time, indicating that the Charge Current meets the preset condition, and switching the battery to a standing mode; when Delay Time is smaller than Rest Time, it is indicated that the Charge Current does not meet the preset condition, and the Charge Current can be detected again.
In this embodiment, after the Battery is switched to the standing mode, the Voltage of the Battery electric core 8 may be detected, and is referred to as a first Voltage Battery Voltage 1 for distinction. With reference to fig. 2, taking the battery fuel gauge 7 as an example, the battery fuel gauge 7 is electrically connected to ground and the positive electrode of the battery cell 8, respectively, and can acquire the voltage of the battery cell 8. Taking the protection chip 1 as an example, the protection chip 1 is electrically connected to ground and the positive electrode of the battery cell 8, so as to obtain the voltage of the battery cell 8.
It should be noted that, when the battery is in the resting mode, the first voltage of the battery cell 8 may be directly detected.
In step 302, the current in the precision resistor is detected in the standing mode to obtain a standing current.
In this embodiment, the current of the precision resistor 3 may be detected in the standing mode to obtain the standing current. The obtaining method is the same as the scheme of the above embodiment, and is not described herein again.
In step 303, when the standing current meets a preset condition, the voltage of the battery cell is continuously obtained to obtain a second voltage.
In this embodiment, whether the standing current satisfies the predetermined condition may be determined in a manner similar to the principle of the embodiment shown in fig. 5, and for details, reference is made to the embodiment shown in fig. 5 and 5, which is not repeated herein.
In this embodiment, when the standing current satisfies the preset condition, the Voltage of the Battery electric core 8 may be continuously obtained, and is referred to as a second Voltage Battery Voltage2 for distinction.
In step 304, when a difference voltage between the second voltage and the first voltage is smaller than a difference threshold, determining that the battery state is a normal state; and when the difference voltage exceeds the difference threshold, determining that the battery state is an abnormal state.
In this embodiment, a Voltage Battery Voltage2-Battery Voltage 1 of a difference between the first Voltage and the second Voltage may be obtained. Wherein, the Battery Voltage2-Battery Voltage 1 can represent the offset of the Battery Voltage2 and the Battery Voltage 1. The difference Voltage (Battery Voltage2-Battery Voltage 1) may then be compared to a difference threshold Absnormal Delta Voltage. When the Battery Voltage2-Battery Voltage 1 is smaller than the Abnormal Delta Voltage, it indicates that in the standing mode, the voltages detected twice are the same or similar, and the Battery cell 8 has no discharging or charging problem, that is, the Battery is in a normal state. When the Battery Voltage2-Battery Voltage 1 exceeds the Abnormal Delta Voltage, it indicates that in the standing mode, the difference between the voltages detected twice is large, and the Battery cell 8 has a discharging or charging problem, that is, the Battery is in an Abnormal state.
In this embodiment, with reference to fig. 2, after the battery fuel gauge 7 determines that the battery is in an abnormal state, the designated pin (INT) of the battery can be further enabled to close the protection switch device 6 electrically connected to the designated pin, so that the current charging or discharging loop is disconnected, and the battery cell 8 is protected.
In an embodiment, referring to fig. 2 continuously, when the precision resistor 3 is short-circuited and the Battery cell 8 has an internal short circuit, the initial current and the standing current detected by the Battery fuel gauge 7 are both 0, and the first Voltage and the second Voltage both exist, considering that the internal short circuit of the Battery cell 8 consumes electricity, the second Voltage is the first Voltage, that is, the Voltage2-Battery Voltage 1 is smaller than the Abnormal Delta Voltage, and at this time, it can still be determined that the Battery is in an Abnormal state. In other words, the present embodiment can detect the problem of the internal short circuit of the battery cell 8 in the case where the precision resistor 3 is short-circuited.
In an embodiment, with continued reference to fig. 2, when the protection chip 1 fails and the battery cell 8 has an internal short circuit, the battery fuel gauge 7 can still detect that the battery is in an abnormal state. In other words, the present embodiment can detect the problem of the internal short circuit of the battery electric core 8 under the condition that the protection chip 1 fails, and compared with the related art, the present embodiment can use one group of protection circuits less, which is beneficial to reducing the number of protection devices in the battery and reducing the production cost.
In this embodiment, the battery is switched to the standing mode to obtain two voltages, and the two voltages are used to determine whether the battery is in the normal state or the abnormal state, for example, the battery does not discharge in the standing mode, and the two voltages are equal or similar, that is, the difference voltage is smaller than the difference threshold, and it is determined that the battery is in the normal state; for another example, if the battery is in the standing mode, if an internal short circuit may occur, the voltage may continuously decrease, that is, the difference voltage may be greater than the difference threshold, it is determined that the battery is in an abnormal state, a single fault test and an internal short circuit test may be performed on the battery, and the protection performance of the battery is improved under the condition that the LPS requirement is met.
Next, with reference to fig. 6, in combination with the process of detecting the battery state of the battery in the charging mode, the charging Current Charge Current of the battery may be detected through the precision resistor, the charging Current Charge Current and the charging Current threshold value Rest ChgI are compared, if the Charge Current exceeds Rest ChgI, the charging Current is detected again, and if the Charge Current is less than Rest ChgI, the duration Time is recorded. And then, comparing the duration Time with a duration threshold value Rest Time, if the duration Time is less than the Rest Time, detecting the charging current again, and if the duration Time exceeds the Rest Time, switching the battery to a standing mode, and detecting the first voltage of the battery cell.
And continuously detecting the standing current of the battery, and comparing the standing current with a current threshold. If the standing current exceeds the current threshold Rest ChgI, the standing current is re-detected. And if the standing current is less than Rest ChgI, recording the Delay Time. And then, comparing the duration Time with a duration threshold value Rest Time, if the duration Time is less than the Rest Time, detecting the charging current again, and if the duration Time exceeds the Rest Time, detecting a second voltage of the battery electric core.
And obtaining a difference voltage of the second voltage and the first voltage, comparing the difference voltage with a difference voltage threshold, if the difference voltage is smaller than the difference voltage threshold, detecting the standing current again, if the difference voltage exceeds the difference voltage threshold, determining that the battery is in an abnormal state, enabling the designated pin INT by the battery fuel gauge, turning off the protection switch 6, and disconnecting a charging loop of the battery so as to protect the battery cell 8.
The embodiment of the disclosure also provides a device for acquiring the state of a battery, which is suitable for a battery fuel gauge in the battery, and fig. 7 is a block diagram of the device for acquiring the state of the battery according to an exemplary embodiment. Referring to fig. 7, an apparatus for acquiring a state of a battery includes:
the first voltage obtaining module 701 is configured to obtain a voltage of an electric core in the battery after the battery is switched to a standing mode, so as to obtain a first voltage;
a standing current obtaining module 702, configured to detect a current in the precision resistor in the standing mode to obtain a standing current;
a second voltage obtaining module 703, configured to continue to obtain the voltage of the battery cell when the standing current meets a preset condition, so as to obtain a second voltage;
a battery state determining module 704, configured to determine that the battery state is a normal state when a difference voltage between the second voltage and the first voltage is smaller than a difference threshold; and when the difference voltage exceeds the difference threshold, determining that the battery state is an abnormal state.
In one embodiment, referring to fig. 8, the first voltage obtaining module 701 includes:
an initial current obtaining unit 801, configured to detect a current of the precision resistor in an initial mode to obtain an initial current; the initial mode includes one of: a charging mode or a discharging mode;
a standing mode switching unit 802, configured to switch the battery from the initial mode to a standing mode when the initial current satisfies the preset condition.
In an embodiment, referring to fig. 9, the rest mode switching unit includes:
an obtaining subunit 901, configured to obtain a current threshold and a duration threshold in the initial mode;
a determining subunit 902, configured to determine whether the initial current is smaller than the current threshold;
a recording subunit 903, configured to record a duration when the initial current is smaller than the current threshold;
a determining subunit 904, configured to determine that the initial current satisfies the preset condition when the duration exceeds the duration threshold.
In one embodiment, referring to fig. 10, the apparatus further comprises:
a designated pin enabling module 1001, configured to enable a designated pin of the battery fuel gauge according to a trigger signal of the battery state determination module, so as to close a protection switch device electrically connected to the designated pin in the battery.
In one embodiment, the battery fuel gauge is further configured to detect an initial current and a rest current.
It can be understood that the apparatus provided in the embodiment of the present disclosure corresponds to the content of the above method embodiments, and specific content may refer to the content of each method embodiment, which is not described herein again.
In this embodiment, the battery is switched to the standing mode to obtain two voltages, and the two voltages are used to determine whether the battery is in the normal state or the abnormal state, for example, the battery does not discharge in the standing mode, and the two voltages are equal or similar, that is, the difference voltage is smaller than the difference threshold, and it is determined that the battery is in the normal state; for another example, if the battery is in the standing mode, if an internal short circuit may occur, the voltage may continuously decrease, that is, the difference voltage may be greater than the difference threshold, it is determined that the battery is in an abnormal state, a single fault test and an internal short circuit test may be performed on the battery, and the protection performance of the battery is improved under the condition that the LPS requirement is met.
FIG. 11 is a block diagram illustrating an electronic device in accordance with an example embodiment. For example, the electronic device 1100 may be a smartphone, a computer, a digital broadcast terminal, a tablet device, a medical device, a fitness device, a personal digital assistant, etc., that includes a transmit coil, a first magnetic sensor, and a second magnetic sensor in a device to acquire a battery state.
Referring to fig. 11, electronic device 1100 may include one or more of the following components: processing component 1102, memory 1104, power component 1106, multimedia component 1108, audio component 1110, input/output (I/O) interface 1112, sensor component 1114, communication component 1116, and image capture component 1118.
The processing component 1102 generally provides for overall operation of the electronic device 1100, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 1102 may include one or more processors 1120 to execute instructions. Further, the processing component 1102 may include one or more modules that facilitate interaction between the processing component 1102 and other components. For example, the processing component 1102 may include a multimedia module to facilitate interaction between the multimedia component 1108 and the processing component 1102.
The memory 1104 is configured to store various types of data to support operations at the electronic device 1100. Examples of such data include instructions for any application or method operating on the electronic device 1100, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 1104 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The power supply component 1106 provides power to the various components of the electronic device 1100. The power components 1106 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the electronic device 1100. In this embodiment, the power module 1104 includes a battery, the battery is implemented by the structure shown in fig. 2, and a battery fuel gauge in the battery can perform a method for obtaining the battery status, so as to obtain the battery status and protect the battery.
The multimedia component 1108 includes a screen between the electronic device 1100 and the target object that provides an output interface. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a target object. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation.
The audio component 1110 is configured to output and/or input audio signals. For example, the audio component 1110 includes a Microphone (MIC) configured to receive external audio signals when the electronic device 1100 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 1104 or transmitted via the communication component 1116. In some embodiments, the audio assembly 1110 further includes a speaker for outputting audio signals.
The I/O interface 1112 provides an interface between the processing component 1102 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc.
The sensor assembly 1114 includes one or more sensors for providing various aspects of state assessment for the electronic device 1100. For example, the sensor component 1114 may detect an open/closed state of the electronic device 1100, the relative positioning of components, such as a display and keypad of the electronic device 1100, the sensor component 1114 may also detect a change in the position of the electronic device 1100 or a component, the presence or absence of a target object in contact with the electronic device 1100, orientation or acceleration/deceleration of the electronic device 1100, and a change in the temperature of the electronic device 1100.
The communication component 1116 is configured to facilitate wired or wireless communication between the electronic device 1100 and other devices. The electronic device 1100 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 1116 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1116 also includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the electronic device 1100 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors, or other electronic components.
In an exemplary embodiment, a non-transitory readable storage medium including executable instructions, such as a memory including instructions, that are executable by a microprocessor of a battery in the electronic device 1100 is also provided. The readable storage medium may be, among others, ROM, Random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosed solution following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (12)
1. A method for obtaining the state of a battery is characterized in that a protection circuit is arranged in the battery, the protection circuit comprises a precision resistor, and the method comprises the following steps:
after the battery is switched to a standing mode, acquiring the voltage of an electric core in the battery to obtain a first voltage;
detecting the current in the precision resistor in the standing mode to obtain standing current;
when the standing current meets a preset condition, continuously acquiring the voltage of the battery cell to obtain a second voltage;
when the difference voltage of the second voltage and the first voltage is smaller than a difference threshold value, determining that the battery state is a normal state; and when the difference voltage exceeds the difference threshold, determining that the battery state is an abnormal state.
2. The method of claim 1, wherein switching the battery to a rest mode comprises:
detecting the current of the precision resistor in an initial mode to obtain an initial current; the initial mode includes one of: a charging mode or a discharging mode;
and when the initial current meets the preset condition, switching the battery from the initial mode to a standing mode.
3. The method of claim 2, wherein determining that the initial current satisfies the predetermined condition comprises:
acquiring a current threshold and a duration threshold in the initial mode;
judging whether the initial current is smaller than the current threshold value;
recording a duration when the initial current is less than the current threshold;
and when the duration exceeds the duration threshold, determining that the initial current meets the preset condition.
4. The method of claim 1, wherein after determining that the battery state is an abnormal state, the method further comprises:
enabling a designated pin of the battery fuel gauge to turn off a protection switching device electrically connected to the designated pin within the battery.
5. The utility model provides an acquire device of battery state which characterized in that, be provided with protection circuit in the battery, protection circuit includes precision resistor, the device includes:
the first voltage acquisition module is used for acquiring the voltage of an electric core in the battery after the battery is switched to a standing mode to obtain a first voltage;
the standing current obtaining module is used for detecting the current in the precision resistor in the standing mode to obtain a standing current;
the second voltage acquisition module is used for continuously acquiring the voltage of the battery cell to obtain a second voltage when the standing current meets a preset condition;
the battery state determining module is used for determining that the battery state is a normal state when the difference voltage of the second voltage and the first voltage is smaller than a difference threshold value; and when the difference voltage exceeds the difference threshold, determining that the battery state is an abnormal state.
6. The apparatus of claim 5, wherein the first voltage acquisition module comprises:
the initial current acquisition unit is used for detecting the current of the precision resistor in an initial mode to obtain an initial current; the initial mode includes one of: a charging mode or a discharging mode;
and the standing mode switching unit is used for switching the battery from the initial mode to a standing mode when the initial current meets the preset condition.
7. The apparatus of claim 5, wherein the rest mode switching unit comprises:
the acquisition subunit is used for acquiring a current threshold and a duration threshold in the initial mode;
the judging subunit is used for judging whether the initial current is smaller than the current threshold value;
the recording subunit is used for recording the duration when the initial current is smaller than the current threshold;
and the determining subunit is configured to determine that the initial current satisfies the preset condition when the duration exceeds the duration threshold.
8. The apparatus of claim 5, wherein after determining that the battery state is an abnormal state, the apparatus further comprises:
and the appointed pin enabling module is used for enabling the appointed pin of the battery fuel gauge according to the trigger signal of the battery state determining module so as to close a protection switch device which is electrically connected with the appointed pin in the battery.
9. A battery is characterized in that a group of protection circuits are arranged in the battery; the group of protection circuits consists of a precision resistor and a protection chip, wherein the precision resistor is electrically connected with the battery cell and used for detecting the current of the battery cell.
10. The battery of claim 9, further comprising a battery fuel gauge; a microprocessor and a memory are arranged in the battery fuel gauge, the memory is provided with a memory for storing executable instructions of the microprocessor, and the microprocessor is configured to execute the executable instructions in the memory to realize the steps of the method according to any one of claims 1-4.
11. An electronic device characterized by comprising the battery according to claim 9 or 10.
12. A readable storage medium having stored thereon executable instructions, wherein the executable instructions when executed by a microprocessor implement the steps of the method of any one of claims 1 to 4.
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