CN110888072A - Battery micro short circuit detection method and device and electronic equipment - Google Patents
Battery micro short circuit detection method and device and electronic equipment Download PDFInfo
- Publication number
- CN110888072A CN110888072A CN201911192450.4A CN201911192450A CN110888072A CN 110888072 A CN110888072 A CN 110888072A CN 201911192450 A CN201911192450 A CN 201911192450A CN 110888072 A CN110888072 A CN 110888072A
- Authority
- CN
- China
- Prior art keywords
- battery
- transduction
- electric quantity
- time
- period
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The disclosure provides a battery micro short circuit detection method and device, electronic equipment and a computer storage medium. The detection method of the battery micro short circuit comprises the following steps: acquiring a detection value of total electric quantity exchanged by the battery in a first transduction period, wherein the transduction period is a charging period or a discharging period; acquiring transduction information of the battery in a second transduction period; and determining a theoretical value of the total electric quantity exchanged by the battery in the second transduction period according to the transduction information. This disclosure can improve the accuracy that little short circuit detected in the battery.
Description
Technical Field
The present disclosure relates to the field of electronic devices, and in particular, to a method and an apparatus for detecting a micro short circuit of a battery, an electronic device, and a computer storage medium.
Background
The internal short circuit of the battery mainly includes short circuit caused by external factors, self-induced short circuit caused by internal structural change of the battery, and the like. The short circuit caused by the internal structure change of the battery has a long evolution process, and the micro short circuit phenomenon generated in the battery is not obvious in the early stage, so that how to effectively and accurately detect the micro short circuit in the battery is of great significance for improving the use safety of the battery.
The above information disclosed in this background section is only for enhancement of understanding of the background of the disclosure and therefore it may contain information that does not constitute prior art that is already known to a person of ordinary skill in the art.
Disclosure of Invention
One objective of the present disclosure is to provide a method for detecting a micro short circuit of a battery, aiming to improve the accuracy of the detection of the micro short circuit in the battery.
In order to solve the technical problem, the following technical scheme is adopted in the disclosure:
according to one aspect of the present disclosure, there is provided a method for detecting a micro short circuit of a battery, including:
acquiring a detection value of total electric quantity exchanged by the battery in a first transduction period; wherein the transduction cycle is a discharge cycle or a charge cycle;
acquiring transduction information of the battery;
according to the transduction information, determining a theoretical value of total electric quantity exchanged by the battery in the second transduction period;
and when the detected value of the exchange total electric quantity does not match with the theoretical value of the exchange total electric quantity, determining that the battery has a micro short circuit.
According to another aspect of the present disclosure, there is provided a device for detecting a micro short circuit of a battery, including:
the total electric quantity detection value acquisition module is used for acquiring the detection value of the total electric quantity exchanged by the battery in the first transduction period;
the transduction information acquisition module is used for acquiring transduction information of the battery in a second transduction period;
the theoretical value determining module of the total electric quantity is used for determining the theoretical value of the total electric quantity exchanged by the battery in the second transduction period according to the transduction information;
and the micro short circuit judging module is used for determining that the battery has micro short circuit when the detection value of the total exchange electric quantity is not matched with the theoretical value of the total exchange electric quantity.
According to another aspect of the present disclosure, there is provided an electronic device including
A storage unit storing a battery micro short detection program;
and the processing unit is used for executing the steps of the battery micro short circuit detection method when the battery micro short circuit detection program is operated.
According to another aspect of the present disclosure, there is provided a computer storage medium storing a battery micro-short detection program that, when executed by at least one processor, implements the steps of the battery micro-short detection method.
In the present disclosure, by obtaining a detection value of the total electric quantity exchanged by the battery in the transduction period and calculating a theoretical value of the total electric quantity theoretically exchangeable by the battery in the transduction period when no micro short circuit occurs in the battery based on the transduction information. Therefore, the method and the device have high detection accuracy, and can reduce the misjudgment of the micro short circuit detection.
In addition, because the detection value and the theoretical value of the total electric quantity exchanged by the battery in the transduction period are synchronously changed along with the aging degree of the battery, the scheme disclosed by the invention can detect the micro short circuit condition in the battery with excellent performance and can also detect the micro short circuit condition in the aged battery; therefore, the scheme disclosed by the invention has strong applicability to batteries with different performances.
Therefore, the micro short circuit detection method disclosed by the invention has higher detection accuracy and stronger applicability.
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 above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.
FIG. 1 is a schematic diagram of an electronic device shown according to an example;
FIG. 2 is a flow chart illustrating a method of battery micro short detection according to an exemplary embodiment;
FIG. 3 is a partial flow diagram illustrating a method of battery micro-short detection according to another exemplary embodiment;
fig. 4 is a partial flow diagram illustrating a method of battery micro-short detection according to another exemplary embodiment.
FIG. 5 is a block diagram illustrating the structure of a battery micro short detection device according to an exemplary embodiment;
FIG. 6 is a system architecture diagram of an electronic device shown in accordance with an exemplary embodiment.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the subject matter of the present disclosure can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and the like. In other instances, well-known structures, methods, devices, implementations, materials, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.
In the present disclosure, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present disclosure can be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present disclosure, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise.
Preferred embodiments of the present disclosure are described in further detail below with reference to the accompanying drawings of the present specification.
The present disclosure proposes an electronic device, which may be a smart terminal, a mobile terminal device, configured with a battery power supply system. The electronic device includes, but is not limited to, a device configured to receive/transmit communication signals via a wireline connection, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection, and/or another data connection/network and/or via a wireless interface, for example, for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a digital video broadcasting-handheld (DVB-H) network, a satellite network, an AM-FM (amplitude modulation-frequency modulation) broadcast transmitter, and/or another communication terminal. Communication terminals arranged to communicate over a wireless interface may be referred to as "wireless communication terminals", "wireless terminals", and/or "smart terminals". Examples of smart terminals include, but are not limited to, satellite or cellular phones; personal Communication System (PCS) terminals that may combine a cellular radiotelephone with data processing, facsimile and data communication capabilities; personal Digital Assistants (PDAs) that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. In addition, the terminal may further include, but is not limited to, a rechargeable electronic device having a charging function, such as an electronic book reader, a smart wearable device, a mobile power source (e.g., a charger, a travel charger), an electronic cigarette, a wireless mouse, a wireless keyboard, a wireless headset, a bluetooth speaker, and the like.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the disclosure. The electronic device 10 may include a rear housing 11, a display 12, a circuit board, and a battery. It should be noted that the electronic device 10 is not limited to include the above contents. Wherein the rear shell 11 may form the outer contour of the electronic device 10. In some embodiments, the rear housing 11 may be a metal rear housing, such as a metal such as magnesium alloy, stainless steel, and the like. It should be noted that the material of the rear case 11 in the embodiment of the present application is not limited to this, and other manners may also be adopted, such as: the rear housing 11 may be a plastic rear housing, a ceramic rear housing, a glass rear housing, or the like.
Wherein the display screen 12 is mounted in the rear case 11. The display screen 12 is electrically connected to the circuit board to form a display surface of the electronic device. In some embodiments, the display surface of the electronic device 10 may be provided with non-display areas, such as: the top end or/and the bottom end of the electronic device 10 may form a non-display area, that is, the electronic device 10 forms a non-display area on the upper portion or/and the lower portion of the display 12, and the electronic device 10 may mount a camera, a receiver, and the like on the non-display area. Note that the display surface of the electronic device 10 may not be provided with the non-display area, that is, the display 12 may be a full-screen. The display screen may be laid over the entire display surface of the electronic device 10, so that the display screen can be displayed in a full screen on the display surface of the electronic device 10.
The display 12 may be one or a combination of liquid crystal display, organic light emitting diode display, electronic ink display, plasma display, and display using other display technologies. The display screen 12 may include an array of touch sensors (i.e., the display screen 12 may be a touch display screen). The touch sensor may be a capacitive touch sensor formed by a transparent touch sensor electrode (e.g., an Indium Tin Oxide (ITO) electrode) array, or may be a touch sensor formed using other touch technologies, such as acoustic wave touch, pressure sensitive touch, resistive touch, optical touch, and the like, and the embodiments of the present application are not limited thereto.
It should be noted that, in some embodiments, a cover plate may be disposed on the display 12, and the cover plate may cover the display 12 to protect the display 12. The cover may be a clear glass cover so that the display 12 is shown through the cover. In some embodiments, the cover plate may be a glass cover plate made of a material such as sapphire. In some embodiments, after the display screen 12 is mounted on the rear case 11, a receiving space is formed between the rear case 11 and the display screen 12, and the receiving space can receive components of the electronic device 10, such as a circuit board, a battery, and the like. The circuit board is mounted in the rear case 11, and may be a main board of the electronic device 10, and one, two or more functional devices such as a motor, a microphone, a speaker, an earphone interface, a universal serial bus interface, a camera, a distance sensor, an ambient light sensor, a receiver, and a processor may be integrated on the circuit board.
In some embodiments, the circuit board may be fixed within the rear case 11. Specifically, the circuit board may be screwed to the rear case 11 by screws, or may be snap-fitted to the rear case 11 by means of a snap. It should be noted that the way of fixing the circuit board to the rear shell 11 specifically is not limited to this, and other ways, such as a way of fixing by a snap and a screw together, are also possible. In which a battery is mounted in the rear case 11, and the battery 11 is electrically connected to a circuit board to supply power to the electronic device 10. The rear case 11 may serve as a battery cover of the battery. The rear case 11 covers the battery to protect the battery, reducing damage to the battery due to collision, dropping, etc. of the electronic apparatus 10.
The electronic device 10 also includes a charging circuit. The charging circuit may charge a cell of the electronic device 10. The charging circuit may be used to further regulate the charging voltage and/or charging current input from the adapter to meet the charging requirements of the battery.
The electronic device is configured with a charging interface, and the charging interface 123 may be, for example, a USB 2.0 interface, a Micro USB interface, or a USB TYPE-C interface. In some embodiments, the charging interface may also be a lightning interface, or any other type of parallel or serial interface capable of being used for charging. The charging interface is connected with the adapter through a data line, the adapter acquires electric energy from mains supply, and the electric energy is transmitted to the charging circuit through the data line and the charging interface after voltage conversion, so that the electric energy can be charged into the battery cell to be charged through the charging circuit.
Fig. 2 shows a flowchart of a method for detecting a micro short circuit of a battery according to an exemplary embodiment of the present disclosure. The present embodiment is exemplified by applying the method to the terminal shown in fig. 1. The method comprises the following steps:
21, acquiring a detection value of the total electric quantity exchanged by the battery in the first transduction period; wherein the first transduction cycle is a discharge cycle or a charge cycle.
The method for detecting the micro short circuit of the battery can be applied to the discharging process and the charging process of the battery. For a discharge cycle, it may refer to a process from a fully charged discharge to a discharged discharge of the battery. It is considered that the battery may not be discharged due to the discharge protection of the battery protection board or the power supply protection of the electronic device in which the battery is located. The discharge cycle can therefore take several forms: the battery is fully charged and is discharged to the whole process that the electronic equipment is shut down due to insufficient power supply; or the battery is fully charged, and the process that the battery is discharged to the battery protection board to control the battery to stop outputting the electric energy because the electric quantity in the battery is too low is carried out; or the process of discharging the available capacity of the battery from 100% to 0%.
In one example, it may refer to a process in which the available capacity of the battery is discharged from 100% to 0%. For example, the process is performed from the time when the battery is fully charged and the available capacity of the battery is 100%, at which the depth of discharge is 0, until the battery cannot discharge electric energy and the electronic device is turned off, and when the available capacity of the battery is 0%, at which the depth of discharge is 100%.
In another example, the discharge period is not limited to one discharge process, and may be a partial superposition of a plurality of discharge processes. For example, during a certain discharge, the available capacity of the battery is discharged from 50% to 0%; after full charging, the battery is discharged in the next discharging process, so that the available capacity of the battery is discharged from 100% to 50%. Thus, the accumulation of the two discharge processes can be equivalent to one discharge period. It should be noted that the two discharging processes may not be two adjacent discharging processes, but the two discharging processes are separated by a small discharging period to avoid the influence of the battery performance change on the discharging performance.
Likewise, corresponding to the charging cycle. For a charging cycle, it may refer to the whole process of discharging the battery to be fully charged. It is considered that the battery may not be discharged due to the protection of the battery protection board from charging or the protection of the electronic device in which the battery is located from supplying power. The charging cycle can therefore take several forms: the process from shutdown of the electronic equipment to full charge of the battery due to insufficient power supply; or the battery protection board controls the battery to stop outputting the electric energy to the process that the battery is fully charged due to the fact that the electric quantity in the battery is too low; or the process of charging the available capacity of the battery from 0% to 100%.
In one example, a charge cycle is the process of charging the available capacity of a battery from 0% to 100% in one charging process. In another example, the charging cycle is not limited to a single charging process, and may be a partial superposition of multiple charging processes. For example, in a certain charging process, the available capacity of the battery is charged from 50% to 100%; then the battery is discharged, the available capacity is shifted to 0 after discharging, and in the next charging process, the battery is charged, so that the available capacity of the battery is charged from 0% to 50%. Thus, the accumulation of these two charging processes may be equivalent to one charging cycle. It should also be noted that the two charging processes may not be adjacent charging processes, but the two charging processes are separated by a smaller charging period in order to avoid the influence of the battery performance variation on the charging performance.
The exchanged electric quantity is referred to as a discharge electric quantity, corresponding to a discharge process. Corresponding to the charging process, the exchanged electric quantity refers to the charging electric quantity. In the present disclosure, the total amount of power exchanged refers to the sum of the amount of power exchanged during a complete transduction cycle. That is, the exchanged total amount of electricity may correspond to the total amount of discharged electricity and the total amount of charged electricity.
In one embodiment, the transduction electric quantity is calculated based on the transduction current and the transduction time, so that the accuracy of the detection value of the ring energy electric quantity is improved. Specifically, the total discharge capacity is calculated by superimposing the discharge current in unit time in correspondence to the discharge process. The total charge amount is calculated by superimposing the charging current in unit time in correspondence with the charging process.
For the constant-current charging stage in the whole charging process, the transduction electric quantity can be calculated through the transduction current and the transduction time corresponding to the constant-current charging stage. For the non-constant current stage in the charging process, the method can be used for more accurately obtaining the actual energy conversion electric quantity of the battery by integrating the energy conversion current
Referring to fig. 3, fig. 3 is a flowchart of an embodiment of 21 in fig. 2. In one embodiment, 211, in a first transduction cycle, the transduction current of the battery is acquired every first unit time length;
and 212, calculating an integral value of the transduction current of the battery, wherein the integral value of the transduction current of the battery is used as a detection value of the exchange total electric quantity.
In one example, Qmax1 ═ idt; wherein Qmax1 is a detection value of the total amount of electricity exchanged by the battery in the second transduction period; i is the transducing current and t is the first unit duration. It is understood that the smaller the first unit time length is, the higher the accuracy of the detected value of the calculated exchange total amount of electricity is. Optionally, the first unit duration is less than 1 second.
Corresponding to the discharging stage, the discharging current of the battery is small and stable in the using process of the electronic equipment, so that the first unit time length can be large. However, in the charging stage, the charging current is large, and the stability of the charging current is poor during non-constant current charging according to different charging modes, so that the first unit time length corresponding to the charging period is less than or equal to the first unit time length corresponding to the discharging period.
In this embodiment, the charging current may be measured by an electricity meter and integrated by a processor or other computing circuitry.
In another embodiment, the detected value for the total amount of power exchanged may also be measured directly with the electricity meter.
In another embodiment, the first unit time length may also be adaptively set according to the rate of change of the transducing current. In particular, the method comprises the following steps of,
acquiring the transduction current of the battery every first unit time in a first transduction period, comprising:
acquiring an initial change rate of a transduction current of the battery at the beginning of a first transduction period;
setting a first unit time length according to the initial change rate of the transduction current of the battery;
monitoring a change in a rate of change of a transduction current of the battery;
updating the first unit time length according to the change of the change rate of the transduction current;
and taking the current first unit time length as a time interval to obtain the transduction current of the battery.
It will be appreciated that the first time unit is smaller when the rate of change of the transducing current is greater and the first time unit is greater when the rate of change of the transducing current is greater. Therefore, the first unit time length can be flexibly adjusted according to the change of the current charging current or discharging current, and the calculated detection value of the total exchange electric quantity is more accurate.
Further, the method also includes, 22, acquiring transduction information of the battery;
the transduction information may refer to the voltage of the battery, the transduction current of the battery, the state of charge of the battery, the depth of discharge of the battery, and the like.
Corresponding to the discharge phase, the transduction information is discharge information. Specifically, the information may be a voltage of the battery, a discharge current of the battery, a discharge depth of the battery, and the like.
The transduction information is charging information corresponding to a charging phase. Specifically, the information may be a voltage of the battery, a charging current of the battery, a state of charge of the battery, and the like.
And 23, determining a theoretical value of the total electric quantity exchanged by the battery in the second transduction period according to the transduction information.
The second transduction period may be the same as or different from the first transduction period. When the second transduction cycle is the same as the first transduction cycle, the acquisition of the theoretical value and the detection value of the exchange total electric quantity can be performed simultaneously in the transduction cycle.
When the first transduction period and the second transduction period are different transduction periods, the number of the transduction periods separated between the first transduction period and the second transduction period is smaller than or equal to a first preset number. The first predetermined number may be a value less than 100.
The theoretical value of the total electric quantity exchanged by the battery in the second transduction period refers to the total electric quantity theoretically exchanged by the battery in a whole second transduction period under the condition that no micro short circuit occurs in the battery.
In one embodiment, the theoretical value of the total amount of power exchanged is calculated based on the following steps of Qmax 2- △ Q/(DoD1-DoD2), wherein Qmax2 is the theoretical value of the total amount of power exchanged, DoD1 is the depth of discharge corresponding to the first time in the second transduction period, DoD2 is the depth of discharge corresponding to the second time in the second transduction period, and △ Q is the difference value of the amount of power exchanged by the battery at the first time and the second time.
Please refer to fig. 3. Based on the above formula, in this embodiment, 22, acquiring transduction information of the battery includes:
221, acquiring a first voltage of a battery corresponding to the battery at a first moment and a second voltage of the battery corresponding to a second moment;
222, acquiring exchanged first electric quantity corresponding to the battery at a first moment and exchanged second electric quantity corresponding to the battery at a second moment;
and 23, determining a theoretical value of the total electric quantity exchanged by the battery in the second transduction period according to the transduction information, wherein the theoretical value comprises the following steps:
231, determining a first transduction degree of the battery corresponding to the first voltage and a second transduction degree corresponding to the second voltage according to a corresponding relationship between a preset voltage difference value and the transduction degree of the battery; the transduction degree is the charge state of the battery corresponding to the charging period, and the transduction degree is the discharge depth of the battery corresponding to the discharging period;
232, calculating the difference between the first transduction degree and the second transduction degree
233, calculating a power difference between the first power and the second power;
and 234, determining a theoretical value of the total power exchanged by the battery in the second transduction period according to the power difference value and the transduction degree difference value.
Corresponding to the discharge process, the steps are as follows:
221, acquiring a first voltage of a battery corresponding to the battery at a first moment and a second voltage of the battery corresponding to a second moment;
222, acquiring a first electric quantity emitted by the battery at a first time and a second electric quantity emitted by the battery at a second time;
and 23, determining a theoretical value of the total electric quantity exchanged by the battery in the second transduction period according to the transduction information, wherein the theoretical value comprises the following steps:
231, determining a first transduction degree of the battery corresponding to the first voltage and a second transduction degree corresponding to the second voltage according to a corresponding relation between a preset voltage difference value and a battery discharge depth;
232, calculating a depth of discharge difference between the first depth of discharge and the second depth of discharge;
233, calculating a power difference between the first power and the second power;
and 234, determining a theoretical value of the total discharged electric quantity of the battery in the discharge period according to the electric quantity difference value and the discharge depth difference value.
In this embodiment, the preset corresponding relationship between the voltage difference and the battery depth of discharge may be stored in the electronic device after being measured in a laboratory before the battery leaves a factory. The correspondence may be embodied in the form of a table or a curve. The depth of discharge difference between the first depth of discharge and the second depth of discharge is determined by finding a first depth of discharge that matches the first voltage and a second depth of discharge that matches the second voltage.
Corresponding to the charging process, the steps are as follows:
221, acquiring a first voltage of a battery corresponding to the battery at a first moment and a second voltage of the battery corresponding to a second moment;
222, acquiring a first electric quantity emitted by the battery at a first time and a second electric quantity emitted by the battery at a second time;
and 23, determining a theoretical value of the total electric quantity exchanged by the battery in the second transduction period according to the transduction information, wherein the theoretical value comprises the following steps:
231, determining a first state of charge of the battery corresponding to the first voltage and a second state of charge corresponding to the second voltage according to a corresponding relation between a preset voltage difference and the state of charge of the battery;
232, calculating a state of charge difference between the first state of charge and the second state of charge;
233, calculating a power difference between the first power and the second power;
and 234, determining a theoretical value of the total absorbed electric quantity of the battery in the charging period according to the electric quantity difference value and the state of charge difference value.
In this embodiment, the preset correspondence between the voltage difference and the state of charge of the battery may be stored in the electronic device after being measured in a laboratory before the battery leaves a factory. The correspondence may be embodied in the form of a table or a curve. And determining the state-of-charge difference between the first state-of-charge and the second state-of-charge by searching the first state-of-charge matched with the first voltage and the second state-of-charge matched with the second voltage.
Further, in order to improve the accuracy of the obtained first power and the second power in the above steps, in an embodiment, 222, obtaining the exchanged first power corresponding to the battery at the first time and the exchanged second power corresponding to the battery at the second time includes:
acquiring the transduction current of the battery every second preset time from the transduction starting time to the first time, and acquiring the transduction current of the battery every second preset time from the transduction starting time to the second time;
and respectively calculating integral values of the transduction current of the battery corresponding to the first time and the second time to determine the exchanged first electric quantity corresponding to the first time and the exchanged second electric quantity corresponding to the second time.
In this embodiment, the first and second electrical quantities are determined based on integration of the transduction current, it being understood that the first electrical quantity is calculated as the sum of the transduction currents over the time from the start of transduction to the first time instant; the second electrical quantity is calculated as the sum of the transducing currents for the time from the start of transduction to the second time instant.
It is understood that the smaller the second preset time period is, the higher the accuracy of the calculated detected value of the exchanged total amount of electricity is. Optionally, the second preset time period is less than 1 second.
Corresponding to the discharge process, the steps are as follows:
acquiring the discharge current of the battery every second preset time from the discharge starting time to the first time, and acquiring the discharge current of the battery every second preset time from the discharge starting time to the second time;
an integral value of a discharge current of the battery corresponding to a first time and a second time is calculated, respectively, to determine a first amount of discharged electricity corresponding to the first time and a second amount of discharged electricity corresponding to the second time.
Further, in order to improve the accuracy of the first voltage and the second voltage of the battery obtained or obtained, in an embodiment, the obtaining a first voltage of the battery corresponding to the battery at a first time and a second voltage of the battery corresponding to the battery at a second time further includes:
and keeping the transduction current of the battery less than or equal to a first preset transduction current threshold value in a first preset time period before the first time and the second time.
The first predetermined transduction current threshold may be set to a small value. For example, 100mA or less. The smaller the first preset transduction current threshold is set, the more accurate the first voltage value and the second voltage value are read.
In one example, the first time and the second time are preset, so that the charging circuit can be controlled by the processor to adjust the transduction current to be lower than the first preset transduction current threshold at a first preset time length before the first time and the second time.
In another example, the first time and the second time are not preset, but are set according to a change in current during transduction. For example, by monitoring the transduction current, when the transduction current continues to be less than a first preset transduction current threshold for a first preset duration, the battery voltage is sampled as the first voltage and the second voltage.
For example, the moment at which transduction starts may be set as a first moment, and a qualified moment may be selected as a second moment during transduction.
It is to be understood that the micro-short detection method of the present disclosure may be applied at any stage during the use of the battery. Whether fresh or aged. For example, during the aging stage of the battery, the performance of the battery is degraded. Therefore, the detected value of the total amount of electricity exchanged by the acquired battery in the first transduction period is reduced relative to the new battery. However, in the present disclosure, when calculating the theoretical value of the total power exchanged in the second transduction period, the aged battery may change in voltage change rate in synchronization with the aging degree of the battery as the transduction proceeds, so that when calculating the theoretical value of the total power exchanged in the second transduction period, the power difference value corresponds to the aging degree of the battery in synchronization with both the first time and the second time. Therefore, the calculated theoretical value of the total amount of electricity exchanged by the battery in the second transduction period can also correspond to the performance change of the battery. The detection method of the present disclosure can effectively detect the micro short even if the battery is aged.
Compared with the prior art, the identification method for the micro short circuit of the battery mostly utilizes the phenomenon that the internal resistance of the battery monomer is abnormal during the micro short circuit to identify the battery monomer with the micro short circuit. However, in this way, the situation that the internal resistance value fluctuates under the condition of battery aging is not considered for the battery micro short circuit detection, for example, after the battery passes through hundreds of cycles, the internal resistance value of the battery is doubled, so that the internal resistance is subjected to false internal resistance abnormality, and the result is misjudged. In addition, the internal resistance value is also subject to temperature fluctuation, and if a single threshold value is set, the internal resistance value is abnormal when the temperature fluctuates, so that the possibility of misjudgment is high.
Therefore, the scheme of the disclosure can improve the accuracy of micro short circuit detection, reduce the occurrence of misjudgment and detect the aged battery.
In order to further improve the calculation accuracy of the theoretical value of the total quantity of electricity exchanged in the second transduction period. In the embodiment, a plurality of first time moments and second time moments are set in the second transduction period, and a first time moment and a second time moment form a group; the method further comprises the following steps:
respectively calculating theoretical values of total electric quantity exchanged in corresponding transduction cycles corresponding to each group of first time and second time;
and determining the final theoretical value of the total electric quantity exchanged by the battery in the second transduction period according to the theoretical values of the total electric quantity exchanged by the battery in the second transduction period, which are correspondingly calculated at the first moment and the second moment of each group.
It is to be understood that the respective first moments do not correspond to the same time node. Each second time does not correspond to the same time node. For example, the plurality of first timings may be set to discharge start timings, 20 minutes after discharge, 40 minutes after discharge, or the like. The plurality of second time points may be set after 40 minutes of discharge, 80 minutes of discharge, or the like. Any of the first time and the second time may be combined to form a group.
In another example, the first time and the second time are not preset values, but are randomly selected by the processing unit according to the fluctuation condition of the transduction current of the battery.
In one example, the transduction cycle is a discharge cycle. The detected value of the exchanged total amount of electricity corresponding to the 100 th discharge period is acquired in 21. The transduction information of the battery corresponding to the discharge period of step 103 is acquired at 22.
Further, the method of the present disclosure further includes: and 24, when the detected value of the exchange total electric quantity does not match with the theoretical value of the exchange total electric quantity, determining that the micro short circuit occurs in the battery, and comprising the following steps:
calculating a difference value between a detection value of the exchange total electric quantity and a theoretical value of the exchange total electric quantity;
and when the absolute value of the difference value between the detection value of the exchange total electric quantity and the theoretical value of the exchange total electric quantity is larger than the first difference value, determining that the micro short circuit occurs in the battery.
In consideration of uncontrollable factors such as detection errors and calculation errors, a certain allowable deviation is set between the detection value of the exchange total electric quantity and the theoretical value of the exchange total electric quantity. Specifically, the difference between the detected value of the exchange total electric quantity and the theoretical value of the exchange total electric quantity may be calculated by a processor or an arithmetic circuit.
Furthermore, after the micro short circuit in the battery is determined, the degree of the micro short circuit and whether the intervention is needed can be determined according to the difference value between the detection value of the exchange total electric quantity and the theoretical value of the exchange total electric quantity.
In the present disclosure, by obtaining a detection value of the total electric quantity exchanged by the battery in the transduction period and calculating a theoretical value of the total electric quantity theoretically exchangeable by the battery in the transduction period when no micro short circuit occurs in the battery based on the transduction information. Therefore, the method has higher detection accuracy and reduces the misjudgment of the micro short circuit detection.
In addition, because the detection value and the theoretical value of the total electric quantity exchanged by the battery in the transduction period are synchronously changed along with the aging degree of the battery, the scheme disclosed by the invention can detect the micro short circuit condition in the battery with excellent performance and can also detect the micro short circuit condition in the aged battery; therefore, the scheme disclosed by the invention has strong applicability to batteries with different performances.
Therefore, the micro short circuit detection method disclosed by the invention has higher detection accuracy and stronger applicability.
Furthermore, it should be noted that the above-mentioned figures are only schematic illustrations of the processes involved in the methods according to exemplary embodiments of the present disclosure, and are not intended to be limiting. It will be readily understood that the processes shown in the above figures are not intended to indicate or limit the chronological order of the processes. In addition, it is also readily understood that these processes may be performed synchronously or asynchronously, e.g., in multiple modules.
The following are embodiments of the disclosed apparatus that may be used to perform embodiments of the disclosed methods. For details not disclosed in the embodiments of the apparatus of the present disclosure, refer to the embodiments of the method of the present disclosure. Please refer to fig. 5. Specifically, in this embodiment, the device 30 for detecting a micro short circuit of a battery includes:
a total electric quantity detection value acquisition module 31, configured to acquire a detection value of total electric quantity exchanged by the battery in the first transduction cycle;
a transduction information acquisition module 32 for acquiring transduction information of the battery;
the theoretical value obtaining module of the total electric quantity is used for determining the theoretical value of the total electric quantity exchanged by the battery in the second transduction period according to the transduction information;
and a micro-short circuit determination module 34, configured to determine that a micro-short circuit occurs in the battery when the detected value of the exchange total power does not match the theoretical value of the exchange total power.
In one embodiment, the device for detecting micro-short circuit of battery further comprises:
the transduction information acquisition module 32 is further configured to acquire a transduction current of the battery every first unit duration in a first transduction period;
and the calculating module is used for calculating the integral value of the transduction current of the battery, and the integral value of the transduction current of the battery is used as a detection value of the exchange total electric quantity.
In an embodiment, the first unit duration corresponding to the charging period is less than or equal to the first unit duration corresponding to the discharging period.
In an embodiment, the transduction information obtaining module 32 is configured to obtain a first voltage of the battery corresponding to the battery at a first time and a second voltage of the battery corresponding to a second time;
the energy conversion information acquisition module 32 is configured to acquire a first exchanged electric quantity corresponding to a first time of the battery and a second exchanged electric quantity corresponding to a second time of the battery;
the battery energy conversion device is also used for determining a first energy conversion degree of the battery corresponding to the first voltage and a second energy conversion degree corresponding to the second voltage according to the corresponding relation between the preset voltage difference value and the energy conversion degree of the battery; the transduction degree is the charge state of the battery corresponding to the charging period, and the transduction degree is the discharge depth of the battery corresponding to the discharging period;
the calculating module is used for calculating a transduction degree difference value of the first transduction degree and the second transduction degree;
the calculating module is used for calculating an electric quantity difference value between the first electric quantity and the second electric quantity;
and a theoretical value determining module 33 for determining a theoretical value of the total electric quantity exchanged by the battery in the second transduction period according to the electric quantity difference value and the transduction degree difference value.
In an embodiment, the device 30 for detecting a micro short circuit of a battery further has a holding module, and the holding module is configured to hold the transduction current of the battery to be less than or equal to a first preset transduction current threshold for a first preset duration before the first time and the second time.
In an embodiment, the first time instant is the time instant at which the second transduction cycle starts.
In an embodiment, the transduction information obtaining module 32 is configured to obtain the transduction current of the battery every second preset time from the transduction start time to the first time, and obtain the transduction current of the battery every second preset time from the transduction start time to the second time;
and the calculating module is used for respectively calculating integral values of the transduction current of the battery corresponding to the first moment and the second moment so as to determine the exchanged first electric quantity corresponding to the first moment and the exchanged second electric quantity corresponding to the second moment.
In an embodiment, the total power detection value obtaining module 31 is configured to obtain a detection value of a total power exchanged by the battery in the first transduction cycle;
the transduction information acquisition module 32 is used for acquiring transduction information of the battery in a second transduction period;
the number of the transduction cycles separated between the first transduction cycle and the second transduction cycle is less than or equal to a first preset number.
In an embodiment, the calculating module is further configured to calculate a difference between the detection value of the total amount of exchanged electricity and a theoretical value of the total amount of exchanged electricity;
and a micro-short circuit determination module 34, configured to determine that a micro-short circuit occurs in the battery when an absolute value of a difference between the detected value of the exchange total power amount and a theoretical value of the exchange total power amount is greater than a first difference.
It is noted that the block diagram shown in fig. 5 above is a functional entity and does not necessarily correspond to a physically or logically separate entity. These functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.
The embodiment also provides an electronic device 10, which includes a storage unit and a processing unit; the storage unit stores a detection program of short circuit in the battery; the processing unit is used for executing the steps of the battery micro short circuit detection method when a battery internal short circuit detection program is operated.
The electronic device 10 proposed by the present disclosure includes a battery, a charging circuit, a storage unit, a processing unit; the storage unit is used for storing a detection program of short circuit in the battery; the processing unit is used for running a detection program of the short circuit in the battery, and when the detection program of the short circuit in the battery is executed, the detection method of the short circuit in the battery is run to detect the short circuit in the battery.
Referring to FIG. 6, the electronic device 10 is embodied as a general purpose computing device. The components of the electronic device 10 may include, but are not limited to: the at least one processing unit 42, the at least one memory unit 41, and the bus 43 connecting the different system components (including the memory unit 420 and the processing unit 410), wherein the memory unit 41 stores program codes, which can be executed by the processing unit 42, so that the processing unit 42 performs the steps according to the various exemplary embodiments of the present disclosure described in the above embodiment section of this specification.
The storage unit 41 may include a readable medium in the form of a volatile storage unit, such as a random access memory unit (RAM)411 and/or a cache memory unit 412, and may further include a read only memory unit (ROM) 413.
The storage unit 41 may also include a program/utility 414 having a set (at least one) of program modules 415, such program modules 415 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which, or some combination thereof, may comprise an implementation of a network environment.
The electronic device 10 may also communicate with one or more external devices 50 (e.g., keyboard, pointing device, bluetooth device, etc.), with one or more devices that enable a user to interact with the electronic device 10, and/or with any devices (e.g., router, modem, display unit 44, etc.) that enable the robotic electronic device 10 to communicate with one or more other computing devices. Such communication may be through an input/output (I/O) interface 45. Also, the robotic electronic device 10 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the internet) via the network adapter 46. As shown in fig. 6, the network adapter 46 communicates with the other modules of the robot's electronic device 10 via the bus 43. It should be understood that although not shown in FIG. 6, other hardware and/or software modules may be used in conjunction with the robotic electronic device 10, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.
Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which may be a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to the embodiments of the present disclosure.
The present disclosure also proposes a computer-readable storage medium that can employ a portable compact disc read only memory (CD-ROM) and include program codes and can be run on a terminal device, such as a personal computer. However, the program product of the present disclosure is not limited thereto, and in the present disclosure, a readable storage medium may be any tangible medium that can contain or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The computer readable medium carries one or more programs which, when executed by the apparatus, cause the computer readable medium to implement the method for detecting a micro short circuit of a battery as shown in fig. 2.
While the present disclosure has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present disclosure may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.
Claims (14)
1. A method for detecting a micro short circuit of a battery is characterized by comprising the following steps:
acquiring a detection value of total electric quantity exchanged by the battery in a first transduction period, wherein the transduction period is a charging period or a discharging period;
acquiring transduction information of the battery in a second transduction period;
according to the transduction information, determining a theoretical value of total electric quantity exchanged by the battery in the second transduction period;
and when the detected value of the exchange total electric quantity does not match with the theoretical value of the exchange total electric quantity, determining that the battery has a micro short circuit.
2. The method of claim 1, wherein obtaining a detected value of a total amount of power exchanged by the battery during the first transduction cycle comprises:
in the first transduction period, the transduction current of the battery is obtained every first unit time length;
and calculating an integral value of the transduction current of the battery, wherein the integral value of the transduction current of the battery is used as a detection value of the exchange total electric quantity.
3. The method of claim 2, wherein said obtaining a transducing current of said battery every first unit time duration during said first transducing period comprises:
acquiring an initial change rate of a transduction current of the battery at the beginning of a first transduction cycle;
setting the first unit time length according to the initial change rate of the transduction current of the battery;
monitoring a change in a rate of change of a transduction current of the battery;
updating the first unit time length according to the change of the change rate of the transduction current;
and taking the current first unit time length as a time interval to obtain the transduction current of the battery.
4. The method of claim 2, wherein the first unit duration for the charging period is less than or equal to the first unit duration for the discharging period.
5. The method of claim 1, wherein the obtaining transduction information of the battery during a second transduction cycle comprises:
acquiring a first voltage of the battery corresponding to the battery at a first moment and a second voltage of the battery corresponding to a second moment;
acquiring exchanged first electric quantity corresponding to the first moment of the battery and exchanged second electric quantity corresponding to the second moment of the battery;
the determining the theoretical value of the total electric quantity exchanged by the battery in the second transduction period according to the transduction information comprises the following steps:
determining a first transduction degree of the battery corresponding to the first voltage and a second transduction degree corresponding to the second voltage according to a corresponding relation between a preset voltage difference value and the transduction degree of the battery; the transduction degree is the charge state of the battery corresponding to the charging period, and the transduction degree is the discharge depth of the battery corresponding to the discharging period;
calculating a difference in transduction degrees between the first transduction degree and the second transduction degree;
calculating an electric quantity difference value of the first electric quantity and the second electric quantity;
and determining a theoretical value of the total electric quantity exchanged by the battery in the second transduction period according to the electric quantity difference value and the transduction degree difference value.
6. The method of claim 5, wherein a plurality of the first time instants and a plurality of the second time instants are set within the second transduction period, a group being formed by a first time instant and a second time instant; the method further comprises the following steps:
respectively calculating theoretical values of total electric quantity exchanged in the second transduction period corresponding to each group of the first time and the second time;
and determining a final theoretical value of the total electric quantity exchanged by the battery in the second transduction period according to the theoretical value of the total electric quantity exchanged by the battery in the second transduction period, which is correspondingly calculated at each group of the first time and the second time.
7. The method of claim 5, wherein the obtaining a first voltage of the battery corresponding to the battery at a first time and a second voltage of the battery corresponding to the battery at a second time respectively comprises:
and keeping the transduction current of the battery less than or equal to a first preset transduction current threshold value in a first preset time before the first time and the second time.
8. The method of claim 5, wherein the first time instant is a time instant at which the second transduction cycle begins.
9. The method of claim 5, wherein the obtaining the exchanged first power amount corresponding to the first time and the exchanged second power amount corresponding to the second time comprises:
acquiring the transduction current of the battery every second preset time from the second transduction period starting time to the first time, and acquiring the transduction current of the battery every second preset time from the transduction process starting time to the second time;
and respectively calculating integral values of the transduction current of the battery corresponding to the first time and the second time to determine a first exchanged electric quantity corresponding to the first time and a second exchanged electric quantity corresponding to the second time.
10. The method of claim 1, wherein determining that the battery has a micro short circuit when the detected value of the exchanged total charge does not match the theoretical value of the exchanged total charge comprises:
calculating a difference value between the detection value of the total exchange electric quantity and a theoretical value of the total exchange electric quantity;
and when the absolute value of the difference value between the detection value of the exchange total electric quantity and the theoretical value of the exchange total electric quantity is larger than a first difference value, determining that the battery is subjected to micro short circuit.
11. The method of claim 1, wherein the discharge cycle is continuously discharged from 100% to 0% of the available capacity of the battery; or in the discharge period, the battery is continuously discharged from the available capacity of 100% to the electronic equipment where the battery is positioned, and the electronic equipment is shut down due to insufficient power supply;
the charging period is continuously charged to 100% from 0% of the available capacity of the battery; or in the charging period, the electronic equipment where the battery is located is charged in a shutdown state due to insufficient power supply until the available capacity of the battery is 100%.
12. A device for detecting a micro short circuit in a battery, comprising:
the total electric quantity detection value acquisition module is used for acquiring the detection value of the total electric quantity exchanged by the battery in the first transduction period; wherein the transduction period is a discharge period or a charge period;
the transduction information acquisition module is used for acquiring transduction information of the battery in a second transduction period;
the theoretical value determining module of the total electric quantity is used for determining the theoretical value of the total electric quantity exchanged by the battery in the second transduction period according to the transduction information;
and the micro short circuit judging module is used for determining that the battery has micro short circuit when the detection value of the total exchange electric quantity is not matched with the theoretical value of the total exchange electric quantity.
13. An electronic device, comprising:
a storage unit storing a battery micro short detection program;
a processing unit, configured to execute the steps of the battery micro short detection method according to any one of claims 1 to 11 when the battery micro short detection program is executed.
14. A computer storage medium storing a battery micro-short detection program that when executed by at least one processor implements the steps of the battery micro-short detection method of any of claims 1-11.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911192450.4A CN110888072A (en) | 2019-11-28 | 2019-11-28 | Battery micro short circuit detection method and device and electronic equipment |
| PCT/CN2020/130929 WO2021104212A1 (en) | 2019-11-28 | 2020-11-23 | Method and apparatus for detecting battery micro-short circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911192450.4A CN110888072A (en) | 2019-11-28 | 2019-11-28 | Battery micro short circuit detection method and device and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110888072A true CN110888072A (en) | 2020-03-17 |
Family
ID=69749309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911192450.4A Pending CN110888072A (en) | 2019-11-28 | 2019-11-28 | Battery micro short circuit detection method and device and electronic equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110888072A (en) |
| WO (1) | WO2021104212A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021104212A1 (en) * | 2019-11-28 | 2021-06-03 | Oppo广东移动通信有限公司 | Method and apparatus for detecting battery micro-short circuit |
| WO2021258472A1 (en) * | 2020-06-23 | 2021-12-30 | 上海理工大学 | Battery cell electric leakage or micro-short-circuit quantitative diagnosis method based on capacity estimation |
| WO2024031261A1 (en) * | 2022-08-08 | 2024-02-15 | 宁德时代新能源科技股份有限公司 | Battery testing method, apparatus, device, storage medium and program product |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1821801A (en) * | 2005-02-18 | 2006-08-23 | 松下电器产业株式会社 | Internal short detection apparatus for secondary-battery, internal short detection method for secondary-battery, battery-pack, and electronic equipment |
| CN102104180A (en) * | 2009-12-22 | 2011-06-22 | 三洋电机株式会社 | Battery system, vehicle provided with the same and method for detecting internal short circuit in battery system |
| CN106646256A (en) * | 2016-12-21 | 2017-05-10 | 惠州Tcl金能电池有限公司 | Battery capacity calculating method |
| CN107037368A (en) * | 2016-02-04 | 2017-08-11 | 联发科技股份有限公司 | Estimate the method and electric power controller of the active volume of battery |
| CN107687387A (en) * | 2016-08-05 | 2018-02-13 | 株式会社杰士汤浅国际 | Electrical storage device, vehicle, detection control method and charge control method |
| CN108152755A (en) * | 2018-01-19 | 2018-06-12 | 上海理工大学 | The method of online quantitative Diagnosis battery micro-short circuit failure |
| CN108241102A (en) * | 2016-12-23 | 2018-07-03 | 华为技术有限公司 | A kind of detection method and device of battery micro-short circuit |
| CN109375107A (en) * | 2018-11-19 | 2019-02-22 | 北京现代汽车有限公司 | Battery dump energy detection method and device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10330739B2 (en) * | 2016-08-24 | 2019-06-25 | The Boeing Company | Detecting internal short circuits in batteries |
| CN107064803B (en) * | 2016-12-16 | 2019-12-13 | 蔚来汽车有限公司 | on-line detection method for short circuit in battery |
| CN107843802B (en) * | 2017-10-23 | 2020-06-02 | 北京小米移动软件有限公司 | Internal short circuit detection method and device |
| CN110018422B (en) * | 2018-01-05 | 2021-10-19 | 宁德新能源科技有限公司 | Battery management method and device |
| CN108318775B (en) * | 2018-05-11 | 2020-06-09 | 北京市亿微科技有限公司 | Method and device for diagnosing battery short-circuit fault on line |
| CN110888072A (en) * | 2019-11-28 | 2020-03-17 | Oppo广东移动通信有限公司 | Battery micro short circuit detection method and device and electronic equipment |
-
2019
- 2019-11-28 CN CN201911192450.4A patent/CN110888072A/en active Pending
-
2020
- 2020-11-23 WO PCT/CN2020/130929 patent/WO2021104212A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1821801A (en) * | 2005-02-18 | 2006-08-23 | 松下电器产业株式会社 | Internal short detection apparatus for secondary-battery, internal short detection method for secondary-battery, battery-pack, and electronic equipment |
| CN102104180A (en) * | 2009-12-22 | 2011-06-22 | 三洋电机株式会社 | Battery system, vehicle provided with the same and method for detecting internal short circuit in battery system |
| CN107037368A (en) * | 2016-02-04 | 2017-08-11 | 联发科技股份有限公司 | Estimate the method and electric power controller of the active volume of battery |
| CN107687387A (en) * | 2016-08-05 | 2018-02-13 | 株式会社杰士汤浅国际 | Electrical storage device, vehicle, detection control method and charge control method |
| CN106646256A (en) * | 2016-12-21 | 2017-05-10 | 惠州Tcl金能电池有限公司 | Battery capacity calculating method |
| CN108241102A (en) * | 2016-12-23 | 2018-07-03 | 华为技术有限公司 | A kind of detection method and device of battery micro-short circuit |
| CN108152755A (en) * | 2018-01-19 | 2018-06-12 | 上海理工大学 | The method of online quantitative Diagnosis battery micro-short circuit failure |
| CN109375107A (en) * | 2018-11-19 | 2019-02-22 | 北京现代汽车有限公司 | Battery dump energy detection method and device |
Non-Patent Citations (1)
| Title |
|---|
| 郭齐胜等: "《系统仿真》", 31 August 2006 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021104212A1 (en) * | 2019-11-28 | 2021-06-03 | Oppo广东移动通信有限公司 | Method and apparatus for detecting battery micro-short circuit |
| WO2021258472A1 (en) * | 2020-06-23 | 2021-12-30 | 上海理工大学 | Battery cell electric leakage or micro-short-circuit quantitative diagnosis method based on capacity estimation |
| WO2024031261A1 (en) * | 2022-08-08 | 2024-02-15 | 宁德时代新能源科技股份有限公司 | Battery testing method, apparatus, device, storage medium and program product |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021104212A1 (en) | 2021-06-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2021104212A1 (en) | Method and apparatus for detecting battery micro-short circuit | |
| CN110704279B (en) | Electric quantity display method and device, electronic equipment and computer storage medium | |
| WO2021035736A1 (en) | Charging control method and apparatus, charging test method and system, and electronic device | |
| CN108475935B (en) | Battery charging management method and terminal | |
| CN111142030B (en) | Method, device and equipment for detecting internal short-circuit current and readable storage medium | |
| EP3349322A1 (en) | Charging method, charging device and terminal | |
| CN113131544A (en) | Charging control method and device, electronic device and computer storage medium | |
| CN101923381B (en) | Electronic device, battery remaining time displaying method and computer executable program | |
| JP2002218668A (en) | Portable information processor, and charging device and method | |
| US20140132558A1 (en) | Touch sensing system and method of controlling power consumption thereof | |
| CN1996701A (en) | Battery charging management system and method | |
| EP4024651A1 (en) | Charging control method and charging control apparatus | |
| CN110244233A (en) | A kind of detection method of battery, electronic equipment and computer storage medium | |
| CN110707772A (en) | Charging control method and device, electronic equipment and computer storage medium | |
| US20200212684A1 (en) | Serial SOC Testing for Improved Fast-Charge Algorithm | |
| CN112803510B (en) | Charging control method and device, electronic equipment and computer storage medium | |
| CN112666467A (en) | Battery leakage current detection method and device, electronic equipment and readable storage medium | |
| WO2021063273A1 (en) | Method and apparatus for detecting short circuit in battery, and electronic device | |
| CN111224179B (en) | Management method and device for full-charge storage of battery, electronic equipment and computer storage medium | |
| CN110824253B (en) | Method and device for detecting direct current impedance of battery, electronic equipment and computer storage medium | |
| JP2008275524A (en) | Battery pack and residual capacity computing method | |
| CN111241023B (en) | Insertion detection circuit and method of flash memory card, and electronic device | |
| CN111697645B (en) | Charging control method and device, electronic equipment and computer readable storage medium | |
| US20120074910A1 (en) | Battery charge management | |
| CN110988717A (en) | Battery detection method, storage medium and terminal device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200317 |
|
| RJ01 | Rejection of invention patent application after publication |