WO2021104212A1 - 电池微短路的检测方法及装置、电子设备 - Google Patents
电池微短路的检测方法及装置、电子设备 Download PDFInfo
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- WO2021104212A1 WO2021104212A1 PCT/CN2020/130929 CN2020130929W WO2021104212A1 WO 2021104212 A1 WO2021104212 A1 WO 2021104212A1 CN 2020130929 W CN2020130929 W CN 2020130929W WO 2021104212 A1 WO2021104212 A1 WO 2021104212A1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
Definitions
- the present disclosure relates to the field of electronic equipment, and in particular to a method and device for detecting battery micro-short circuits, electronic equipment, and computer storage media.
- the internal short circuit of the battery mainly includes short circuit caused by external factors and self-induced short circuit caused by changes in the internal structure of the battery.
- the self-induced short circuit caused by the internal structural change of the battery has a long evolutionary process. In the initial stage, the micro short circuit phenomenon in the battery is not significant. Therefore, how to effectively and accurately detect the occurrence of the micro short circuit in the battery is important for improving The safety of the battery is of great significance.
- An object of the present disclosure is to provide a method for detecting micro short circuits in batteries, aiming to improve the accuracy of detecting micro short circuits in batteries.
- a method for detecting a micro short circuit of a battery including:
- the switching cycle is a discharge cycle or a charging cycle
- a battery micro-short circuit detection device including:
- the total power detection value acquisition module is used to obtain the detection value of the total power exchanged by the battery in the first conversion cycle
- a transduction information acquisition module which is used to acquire the transduction information of the battery in the second transduction period
- the theoretical value determination module of the total electric quantity is configured to determine the theoretical value of the total electric quantity exchanged by the battery in the second energy conversion period according to the energy conversion information;
- the micro-short circuit determination module is used for determining that the battery has a micro-short circuit when the detected value of the total exchange power does not match the theoretical value of the total exchange power.
- an electronic device including:
- the storage unit stores the battery micro short circuit detection program
- the processing unit is configured to execute the steps of the battery micro short circuit detection method when the battery micro short circuit detection program is running.
- a computer storage medium stores a battery micro short circuit detection program, and the battery micro short circuit detection program is executed by at least one processor to implement the battery micro short circuit detection method A step of.
- the present disclosure by obtaining the detection value of the total power exchanged by the battery during the conversion cycle, and calculating based on the conversion information, when there is no micro-short circuit in the battery, theoretically the total power exchange that the battery can exchange during the conversion cycle value. Therefore, the present disclosure has high detection accuracy and can reduce the misjudgment of micro-short circuit detection.
- the solution of the present disclosure can not only detect the micro-short-circuit condition in the battery with excellent performance. , It can also detect the micro-short-circuit condition in the aging battery; therefore, the solution of the present disclosure has strong applicability for batteries with different performance.
- the micro-short circuit detection method of the present disclosure has high detection accuracy and strong applicability.
- Fig. 1 is a schematic diagram showing the structure of an electronic device according to an example
- Fig. 2 is a flow chart showing a method for detecting a micro short circuit of a battery according to an exemplary embodiment
- Fig. 3 is a partial flowchart of a method for detecting a battery micro short circuit according to another exemplary embodiment
- Fig. 4 is a partial flowchart of a method for detecting a battery micro short circuit according to another exemplary embodiment
- Fig. 5 is a structural block diagram of a battery micro-short circuit detection device according to an exemplary embodiment
- Fig. 6 is a system architecture diagram of an electronic device according to an exemplary embodiment.
- the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection. , Or integrated; it can be mechanically connected, or electrically connected, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two components or the interaction of two components.
- installed e.g., it may be a fixed connection or a detachable connection. , Or integrated; it can be mechanically connected, or electrically connected, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two components or the interaction of two components.
- first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with “first” and “second” may explicitly or implicitly include one or more of these features. In the description of the present disclosure, “plurality” means at least two, such as two, three, etc., unless otherwise specifically defined.
- the present disclosure proposes an electronic device, which may be a smart terminal or a mobile terminal device equipped with a battery power supply system.
- the electronic equipment includes, but is not limited to, set to be connected via wired lines, such as public switched telephone network (PSTN), digital subscriber line (digital subscriber line, DSL), digital cable, direct cable connection, and/ Or another data connection/network and/or via, for example, cellular networks, wireless local area networks (WLAN), digital television networks such as digital video broadcasting handheld (DVB-H) networks, satellites A network, an amplitude modulation-frequency modulation (AM-FM) broadcast transmitter, and/or a device for receiving/transmitting communication signals on a wireless interface of another communication terminal.
- PSTN public switched telephone network
- DSL digital subscriber line
- DSL digital cable
- direct cable connection direct cable connection
- another data connection/network and/or via, for example, cellular networks, wireless local area networks (WLAN), digital television networks such as digital video broadcasting handheld (DVB-H) networks,
- a communication terminal set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a “wireless terminal” and/or a “smart terminal”.
- smart terminals include, but are not limited to, satellite or cellular phones; personal communication system (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, and the Internet/ Personal Digital Assistant (PDA) with intranet access, web browser, memo pad, calendar, and/or global positioning system (GPS) receiver; and conventional laptop and/or palmtop Receiver or other electronic device including a radio telephone transceiver.
- the terminal can also include, but is not limited to, electronic book readers, smart wearable devices, mobile power sources (such as power banks, travel chargers), electronic cigarettes, wireless mice, wireless keyboards, wireless headsets, Bluetooth speakers, etc. Rechargeable electronic equipment.
- FIG. 1 is a schematic structural diagram of an embodiment of an electronic device of the present disclosure.
- the electronic device 10 may include a rear case 11, a display screen 12, a circuit board, and a battery. It should be noted that the electronic device 10 is not limited to include the above content.
- the rear case 11 may form the outer contour of the electronic device 10.
- the rear shell 11 may be a metal rear shell, such as magnesium alloy, stainless steel and other metals. It should be noted that the material of the rear shell 11 in the embodiment of the present application is not limited to this, and other methods may also be used.
- the rear shell 11 may be a plastic rear shell, a ceramic rear shell, a glass rear shell, and the like.
- the display screen 12 is installed in the rear shell 11.
- the display screen 12 is electrically connected to the circuit board to form the display surface of the electronic device.
- the display surface of the electronic device 10 may be provided with a non-display area.
- the top or/and bottom of the electronic device 10 may form a non-display area, that is, the electronic device 10 is on the upper or/and lower part of the display screen 12.
- a non-display area is formed, and the electronic device 10 can install a camera, a receiver, and other devices in the non-display area.
- the display surface of the electronic device 10 may not be provided with a non-display area, that is, the display screen 12 may be a full screen.
- the display screen can be laid on the entire display surface of the electronic device 10 so that the display screen can be displayed in full screen on the display surface of the electronic device 10.
- the display screen 12 may be one or a combination of a liquid crystal display, an organic light emitting diode display, an electronic ink display, a plasma display, and a display using other display technologies.
- the display screen 12 may include a touch sensor array (ie, the display screen 12 may be a touch display screen).
- the touch sensor can be a capacitive touch sensor formed by an array of transparent touch sensor electrodes (such as indium tin oxide (ITO) electrodes), or can be a touch sensor formed using other touch technologies, such as sonic touch, pressure-sensitive touch, and resistance. Touch, optical touch, etc., are not limited in the embodiment of the present application.
- a cover plate may be provided on the display screen 12, and the cover plate may cover the display screen 12 to protect the display screen 12.
- the cover plate may be a transparent glass cover plate, so that the display screen 12 can display through the cover plate.
- the cover plate may be a glass cover plate made of materials such as sapphire.
- a storage space is formed between the rear case 11 and the display screen 12, and the storage space can accommodate components of the electronic device 10, such as circuit boards, batteries, and the like.
- the circuit board is installed in the back shell 11, the circuit board can be the main board of the electronic device 10, and the circuit board can be integrated with a motor, a microphone, a speaker, a headphone interface, a universal serial bus interface, a camera, a distance sensor, and an ambient light sensor.
- a motor a microphone
- a speaker a speaker
- a headphone interface a headphone interface
- a universal serial bus interface a camera
- a distance sensor a distance sensor
- an ambient light sensor a light sensor.
- One, two or more of functional devices such as receivers and processors.
- the circuit board may be fixed in the rear case 11.
- the circuit board may be screwed to the rear shell 11 by screws, or may be snap-fitted to the rear shell 11 in a snap-fit manner.
- the specific method of fixing the circuit board to the rear shell 11 in the embodiment of the present application is not limited to this, and other methods, such as a method of joint fixing by a buckle and a screw, may also be used.
- the battery is installed in the rear case 11, and the battery 11 is electrically connected with the circuit board to provide power to the electronic device 10.
- the rear case 11 can serve as a battery cover for the battery.
- the rear case 11 covers the battery to protect the battery and reduce damage to the battery due to collisions, drops, etc. of the electronic device 10.
- the electronic device 10 also includes a charging circuit.
- the charging circuit can charge the battery cell of the electronic device 10.
- the charging circuit can be used to further adjust the charging voltage and/or charging current input from the adapter to meet the charging requirements of the battery.
- the electronic device is equipped with a charging interface
- the charging interface may be, for example, a USB 2.0 interface, a Micro USB interface, or a USB TYPE-C interface.
- the charging interface can also be a lightning interface, or any other type of parallel or serial port that can be used for charging.
- the charging interface is connected to the adapter through a data line.
- the adapter obtains electrical energy from the city power. After voltage conversion, it is transmitted through the data line and the charging interface to the charging circuit. Therefore, the electrical 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 provided by an exemplary embodiment of the present disclosure.
- the method is applied to the terminal shown in FIG. 1 as an example for illustration.
- the method includes:
- the battery micro-short detection method of the present disclosure can be applied to the discharge process and the charging process of the battery.
- the discharge cycle can refer to the process from a fully charged battery to discharge.
- the discharge cycle can also have the following forms: the battery is fully charged and discharged until the electronic device shuts down due to insufficient power supply; or the battery is fully charged and discharged until the battery protection board controls the battery to stop due to low power in the battery The process of outputting electric energy; or the process of discharging the available capacity of the battery from 100% to 0%.
- it may refer to the process of discharging the available capacity of the battery from 100% to 0%. For example, from the time the battery is fully charged and the available capacity of the battery is 100%, the depth of discharge is 0 at this time, and the battery is discharged to the point where the battery cannot discharge electric energy and the electronic device is shut down, and the available capacity of the battery is 0%. %the process of.
- the discharge period is not limited to one discharge process, and may be a partial superposition of multiple discharge processes.
- the available capacity of the battery is discharged from 50% to 0%; after fully charged, in the next discharge process, the battery is discharged to discharge the available capacity of the battery from 100% to 50%. Therefore, the accumulation of these two discharge processes can be equivalent to one discharge cycle.
- the two discharge processes may not be two adjacent discharge processes, but in order to avoid the impact of battery performance changes on the discharge performance, there are fewer discharge cycles between the two discharge processes.
- the charging cycle corresponds to the charging cycle.
- the charging cycle can refer to the entire process from the battery being discharged to being fully charged. Considering that due to the charging protection of the battery protection board or the power supply protection of the electronic device where the battery is located, the battery may not be able to discharge its power. Therefore, the charging cycle can also have the following forms: the process from when the electronic device is shut down due to insufficient power supply until the battery is fully charged; or the battery protection board controls the battery to stop outputting electrical energy until the battery is fully charged due to the low power in the battery; Or the process of charging the battery's usable capacity from 0% to 100%.
- the charging cycle is a process in which the available capacity of the battery is charged from 0% to 100% in a charging process.
- the charging cycle is not limited to one 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, and the available capacity will be 0 after discharge. In the next charging process, the battery is charged to make the available capacity of the battery Charge from 0% to 50%. Therefore, the accumulation of these two charging processes can be equivalent to one charging cycle. It should also be noted that the two charging processes may not be two adjacent charging processes, but in order to avoid the impact of battery performance changes on the charging performance, there are fewer charging cycles between the two charging processes.
- the exchanged electricity refers to the discharged electricity.
- the exchanged power refers to the charging power.
- the total amount of electricity exchanged refers to the total amount of electricity exchanged in a complete energy conversion cycle. That is, the total amount of electricity exchanged can correspond to the total amount of electricity discharged and the total amount of electricity charged.
- the energy conversion amount is calculated based on the energy conversion current and the energy conversion time, so as to improve the accuracy of the detection value of the loop energy amount. Specifically, corresponding to the discharge process, the total discharge electricity is calculated by superimposing the discharge current in a unit time. Corresponding to the charging process, the total charge is calculated by superimposing the charging current in a unit time.
- the energy conversion amount can be calculated by the conversion current and the energy conversion time corresponding to the constant current charging stage.
- the actual energy conversion capacity of the battery can be obtained more accurately by integrating the energy conversion current.
- FIG. 3 is a flowchart of an embodiment of 21 in FIG. 2.
- 211 in the first conversion period, obtain the battery's conversion current every first unit duration;
- Qmax1 ⁇ idt; where Qmax1 is the detected value of the total power exchanged by the battery in the second energy conversion period; i is the energy conversion current, and t is the first unit duration. It can be understood that the smaller the first unit time, the higher the accuracy of the calculated detection value of the total exchange power. Optionally, the first unit duration is less than 1 second.
- the first unit time may be relatively large.
- the first unit duration corresponding to the charging cycle is less than or equal to the discharge cycle The corresponding first unit of time.
- the charging current can be measured by a fuel gauge, and the charging current can be integrated and calculated by the processor or other calculation circuits.
- the detected value of the total amount of electricity exchanged can also be directly measured by the electricity meter.
- the first unit duration can also be adaptively set according to the rate of change of the transducer current.
- the battery's conversion current is obtained every first unit of time, including:
- the current first unit duration is used as the time interval to obtain the energy conversion current of the battery.
- the first unit time length can be adjusted flexibly according to the current change of the charging current or the discharging current, so that the calculated detection value of the total exchange power is more accurate.
- the method further includes, 22, obtaining the energy conversion information of the battery;
- the energy conversion information may refer to information such as the voltage of the battery, the energy conversion current of the battery, the state of charge of the battery, and the depth of discharge of the battery.
- the energy conversion information is discharge information. Specifically, it can be information such as the voltage of the battery, the discharge current of the battery, and the depth of discharge of the battery.
- the energy conversion information is charging information. Specifically, it can be information such as the voltage of the battery, the charging current of the battery, and the state of charge of the battery.
- the second conversion period and the first conversion period may be the same conversion period or different conversion periods.
- the theoretical value and the detection value of the total exchange power can be obtained simultaneously during the energy conversion period.
- the number of conversion periods between the first conversion period and the second conversion period is less than or equal to the first preset number .
- the first preset number can be a value less than 100.
- the theoretical value of the total power exchanged by the battery in the second conversion cycle refers to the total power that the battery can theoretically exchange during the entire second conversion cycle when there is no micro-short circuit inside the battery.
- Qmax2 is the theoretical value of the total power exchanged
- DoD1 is the depth of discharge corresponding to the first moment in the second conversion period
- DoD2 is the depth of discharge corresponding to the second moment in the second conversion period
- ⁇ Q is the difference between the power exchanged by the battery at the first time and the second time.
- acquiring the energy conversion information of the battery includes:
- the degree of energy conversion is the state of charge of the battery, which corresponds to the discharge cycle, and the degree of energy conversion is the depth of discharge of the battery;
- the preset corresponding relationship between the voltage difference and the depth of discharge of the battery may be measured in a laboratory before the battery leaves the factory, and then stored in the electronic device.
- the corresponding relationship can be embodied in the form of a table or a curve.
- the preset corresponding relationship between the voltage difference and the state of charge of the battery may be measured in the laboratory before the battery leaves the factory, and then stored in the electronic device.
- the corresponding relationship can be embodied in the form of a table or a curve.
- the first power exchanged corresponding to the battery at the first moment is acquired, and the The exchanged second amount of electricity corresponding to the moment includes:
- the integral values corresponding to the first moment and the second moment of the battery's transducing current are respectively calculated to determine the exchanged first power corresponding to the first moment and the exchanged second power corresponding to the second moment.
- the first electric quantity and the second electric quantity are determined based on the integration of the energy conversion current. It can be understood that when calculating the first electric quantity, it is the time from the start of the energy conversion to the first moment. , The sum of the transducer current; when calculating the second electric quantity, it is the sum of the transducer current from the start of the transducer to the second moment.
- the second preset time period the higher the accuracy of the calculated detection value of the total exchange power.
- the second preset duration is less than 1 second.
- the integrated values of the discharge current of the battery corresponding to the first moment and the second moment are respectively calculated to determine the first amount of electricity discharged corresponding to the first moment and the second amount of electricity discharged corresponding to the second moment.
- the first voltage of the battery corresponding to the first time and the second time corresponding to the battery are obtained.
- the second voltage of the battery also includes:
- the transducing current of the battery is maintained to be less than or equal to the first preset transducing current threshold.
- the first preset transducer current threshold can be set to a smaller value. For example, below 100mA. The smaller the first preset transducer current threshold is set, the more accurate the first voltage value and the second voltage value read.
- the first time and the second time are preset, so the charging circuit can be controlled by the processor to adjust the transducing current to the first preset time period before the first time and the second time. , So that the transducing current falls below the first preset transducing current threshold.
- the first time and the second time are not preset, but are set according to the change of the current during the energy conversion process. For example, by monitoring the conversion current, when the conversion current is continuously less than the first preset conversion current threshold for the first preset time period, the battery voltage is sampled as the first voltage and the second voltage.
- the micro short circuit detection method of the present disclosure can be applied to any stage in the battery use process. Whether it is a new battery or an aging battery. For example, during the aging phase of the battery, the performance of the battery is attenuated. Therefore, the detected value of the total power exchanged by the acquired battery in the first conversion cycle is lower than that of a new battery.
- the detection method of the present disclosure can still effectively detect the micro short circuit.
- the identification method of battery micro-short circuit mostly uses the phenomenon that the internal resistance of the battery cell is abnormal during the micro-short circuit to identify the battery cell with the micro-short circuit.
- this method does not take into account the fluctuation of the internal resistance of the battery when the battery is aging. For example, after hundreds of cycles of the battery, the internal resistance of the battery will double and increase, which will cause false internal resistance. The "abnormal internal resistance", leading to misjudgment of results.
- the internal resistance value is also affected by temperature fluctuations. If a single threshold is set, the internal resistance value will be abnormal when the temperature fluctuates, so the possibility of misjudgment is high.
- the solution of the present disclosure can improve the accuracy of micro-short circuit detection, reduce the occurrence of misjudgments, and can also detect aging batteries.
- a plurality of first moments and second moments are set in the second conversion period, and a first moment and a second moment form a group; the method further includes:
- each first moment does not correspond to the same time node.
- Each second moment does not correspond to the same time node.
- multiple first moments can be set to discharge start time, 20 minutes after discharge, 40 minutes after discharge, and so on.
- Multiple second moments can be set after 40 minutes of discharge, after 80 minutes of discharge, after 80 minutes of discharge, and so on. Any first moment and second moment can be combined to form a group.
- the first moment and the second moment are not preset values, but are randomly selected by the processing unit according to the fluctuations of the energy conversion current of the battery.
- the switching period is a discharge period. What is obtained in 21 is the detected value of the total exchange power corresponding to the 100th discharge cycle. What is acquired in 22 is the battery's transduction information corresponding to the discharge cycle in step 103.
- the method of the present disclosure further includes: 24.
- determining that the battery has a micro short circuit includes:
- the calculation of the difference between the detected value of the total exchange power and the theoretical value of the total exchange power can be performed by a processor or an arithmetic circuit.
- the difference between the detected value of the total exchange power and the theoretical value of the total exchange power can also be used to determine the degree of the micro short circuit and whether intervention is required.
- the present disclosure by obtaining the detection value of the total power exchanged by the battery during the conversion cycle, and calculating based on the conversion information, when there is no micro-short circuit in the battery, theoretically the total power exchange that the battery can exchange during the conversion cycle value. Therefore, the present disclosure has high detection accuracy and reduces the misjudgment of micro short circuit detection.
- the solution of the present disclosure can not only detect the micro-short-circuit condition in the battery with excellent performance. , It can also detect the micro-short-circuit condition in the aging battery; therefore, the solution of the present disclosure has strong applicability for batteries with different performance.
- the micro-short circuit detection method of the present disclosure has high detection accuracy and strong applicability.
- the battery micro-short circuit detection device 30 includes:
- the total power detection value obtaining module 31 is used to obtain the detection value of the total power exchanged by the battery in the first switching cycle
- the energy conversion information obtaining module 32 is used to obtain the energy conversion information of the battery
- the theoretical value determination module 33 of the total power is used for determining the theoretical value of the total power exchanged by the battery in the second power conversion period according to the energy conversion information;
- the micro short circuit determination module 34 is used for determining that the battery has a micro short circuit when the detected value of the total exchange power does not match the theoretical value of the total exchange power.
- the device for detecting battery micro short circuit further includes:
- the energy conversion information obtaining module 32 is also used to obtain the energy conversion current of the battery every first unit duration in the first energy conversion period;
- the calculation module is used to calculate the integrated value of the battery's conversion current, and the integrated value of the battery's conversion current is used as the detection value of the total exchange power.
- the first unit duration corresponding to the charging period is less than or equal to the first unit duration corresponding to the discharging period.
- the energy conversion information obtaining module 32 is configured to obtain the first voltage of the battery corresponding to the first time and the second voltage of the battery corresponding to the second time respectively;
- the energy conversion information acquiring module 32 is configured to acquire the exchanged first amount of electricity corresponding to the first moment of the battery and the exchanged second amount of electricity corresponding to the second moment;
- the theoretical value determination module 33 of the total power is also used to determine the first degree of battery transduction corresponding to the first voltage and the degree of battery transduction corresponding to the second voltage according to the preset correspondence between the voltage difference and the degree of battery transduction.
- the second degree of transduction where, corresponding to the charging cycle, the degree of transduction is the state of charge of the battery, corresponding to the discharge period, and the degree of transduction is the depth of discharge of the battery;
- the calculation module is used to calculate the difference in the degree of transduction between the first degree of transduction and the second degree of transduction;
- a calculation module for calculating the difference between the first power and the second power
- the theoretical value determining module 33 of the total power is used to determine the theoretical value of the total power exchanged by the battery in the second power conversion cycle according to the power difference and the difference in the degree of conversion.
- the battery micro-short circuit detection device 30 further has a holding module, and the holding module is used to keep the battery's transducing current less than or equal to the first preset period of time before the first time and the second time. Set the transducer current threshold.
- the first moment is the moment when the second transduction period starts.
- the transduction information acquisition module 32 is configured to acquire the transducing current of the battery from the start time of transduction to the first time, every second preset period of time, and from the start time of transduction to the second time, Obtain the battery's energy conversion current every second preset duration;
- the calculation module is used to respectively calculate the integral value of the battery's transduction current corresponding to the first moment and the second moment, so as to determine the exchanged first amount of electricity corresponding to the first moment and the exchanged value corresponding to the second moment The second power.
- the total power detection value acquisition module 31 is configured to acquire the detection value of the total power exchanged by the battery in the first conversion cycle
- the energy conversion information obtaining module 32 is used to obtain the energy conversion information of the battery in the second energy conversion period
- the number of energy conversion cycles spaced between the first energy conversion cycle and the second energy conversion cycle is less than or equal to the first preset number.
- the calculation module is also used to calculate the difference between the detected value of the total exchange power and the theoretical value of the total exchange power
- the micro short circuit determination module 34 is configured to determine that the battery has a micro short circuit when the absolute value of the difference between the detected value of the total exchange power and the theoretical value of the total exchange power is greater than the first difference.
- FIG. 5 the block diagram shown in Figure 5 above is a functional entity and does not necessarily correspond to a physically or logically independent entity.
- These functional entities may be implemented in the form of software, or implemented in one or more hardware modules or integrated circuits, or implemented in different networks and/or processor devices and/or microcontroller devices.
- This embodiment also proposes an electronic device 4, including a storage unit and a processing unit; the storage unit stores a detection program for short-circuit in the battery; the processing unit is used to execute the above-mentioned battery short-circuit detection program when running the short-circuit detection program in the battery. Steps of the detection method.
- the electronic device 4 proposed in the present disclosure includes a battery, a charging circuit, a storage unit, and a processing unit; the storage unit is used to store a short circuit detection program in the battery; the processing unit is used to run a short circuit detection program in the battery and a short circuit detection program in the battery When executed, run the above-mentioned detection method of short-circuit in the battery to detect the short-circuit in the battery.
- the electronic device 4 is represented in the form of a general-purpose computing device.
- the components of the electronic device 4 may include, but are not limited to: the aforementioned at least one processing unit 42, the aforementioned at least one storage unit 41, and a bus 43 connecting different system components (including the storage unit 41 and the processing unit 42), wherein the storage unit 41 stores
- the program code may be executed by the processing unit 42 so that the processing unit 42 executes the steps according to various exemplary embodiments of the present disclosure described in the above-mentioned 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 storage unit (RAM) 411 and/or a cache storage unit 412, and may further include a read-only storage unit (ROM) 413.
- RAM random access storage unit
- ROM read-only storage unit
- the storage unit 41 may also include a program/utility tool 414 having a set (at least one) program module 415, such program module 415 includes but is not limited to: an operating system, one or more application programs, other program modules, and program data, Each of these examples or some combination may include the implementation of a network environment.
- the bus 43 may represent one or more of several types of bus structures, including a storage unit bus or a storage unit controller, a peripheral bus, a graphics acceleration port, a processing unit, or a local area using any bus structure among multiple bus structures. bus.
- the electronic device 4 can also communicate with one or more external devices 50 (such as keyboards, pointing devices, Bluetooth devices, etc.), and can also communicate with one or more devices that enable users to interact with the electronic device 4, and/or communicate with Any device (such as a router, a modem, a display unit 44, etc.) that enables the electronic device 4 of the robot to communicate with one or more other computing devices. This communication can be performed through an input/output (I/O) interface 45.
- the electronic device 4 of the robot can also communicate with one or more networks (for example, a local area network (LAN), a wide area network (WAN), and/or a public network, such as the Internet) through the network adapter 46. As shown in FIG.
- the network adapter 46 communicates with other modules of the electronic device 4 of the robot through the bus 43. It should be understood that although not shown in FIG. 6, other hardware and/or software modules can be used in conjunction with the electronic device 4 of the robot, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems , Tape drives and data backup storage systems.
- the example embodiments described here can be implemented by software, or can be implemented by combining software with necessary hardware. Therefore, the technical solution according to the embodiments of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, U disk, mobile hard disk, etc.) or on the network , Including several instructions to make a computing device (which may be a personal computer, a server, a terminal device, or a network device, etc.) execute the method according to the embodiments of the present disclosure.
- a computing device which may be a personal computer, a server, a terminal device, or a network device, etc.
- the present disclosure also proposes a computer-readable storage medium that can adopt a portable compact disk read-only memory (CD-ROM) and include program codes, and can run on a terminal device, such as a personal computer.
- CD-ROM portable compact disk read-only memory
- the program product of the present disclosure is not limited thereto.
- the readable storage medium may be any tangible medium that contains or stores a program, and the program may be used by or in combination with an instruction execution system, apparatus, or device.
- the aforementioned computer-readable medium carries one or more programs, and when the aforementioned one or more programs are executed by a device, the computer-readable medium realizes the method for detecting a battery micro short circuit as shown in FIG. 2.
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Abstract
一种电池微短路的检测方法及装置(30)、电子设备(4)、计算机存储介质。电池微短路的检测方法,包括:获取电池在第一换能周期内所交换总电量的检测值,其中,换能周期为充电周期或放电周期(21);获取电池的在第二换能周期内的换能信息(22);根据换能信息,确定电池在第二换能周期内所交换总电量的理论值(23),从而能够提高电池内微短路检测的准确性。
Description
交叉引用
本公开要求于2019年11月28日提交的申请号为201911192450.4,名称均为“电池微短路的检测方法及装置、电子设备”的中国专利申请的优先权,该中国专利申请的全部内容通过引用全部并入本文。
本公开涉及电子设备领域,特别涉及一种电池微短路的检测方法及装置、电子设备、计算机存储介质。
电池的内短路主要包括外部因素引发的短路和电池内部结构变化而自引发的短路等。电池内部结构变化所自引发的短路具有一个漫长的演化过程,而在初期阶段,电池内所发生的微短路现象并不显著,因此如何有效而准确地检测出电池内微短路的发生,对于提高电池的使用安全性具有重要意义。
在所述背景技术部分公开的上述信息仅用于加强对本公开的背景的理解,因此它可以包括不构成对本领域普通技术人员已知的现有技术的信息。
公开内容
本公开的一个目的在于提出一种电池微短路的检测方法,旨在提高电池内微短路检测的准确性。
为解决上述技术问题,本公开采用如下技术方案:
根据本公开的一个方面,提供一种电池微短路的检测方法,包括:
获取电池在第一换能周期内所交换总电量的检测值;其中,所述换能周期为放电周期或充电周期;
获取所述电池的换能信息;
根据所述换能信息,确定所述电池在所述第二换能周期内所交换总电量的理论值;
当所述交换总电量的检测值与所述交换总电量的理论值不匹配时,确定所述电池发生了微短路。
根据本公开的另一个方面,提供一种电池微短路的检测装置,包括:
总电量检测值获取模块,用于获取电池在第一换能周期内所交换总电量的检测值;
换能信息获取模块,用于获取所述电池在第二换能周期内的换能信息;
总电量的理论值确定模块,用于根据所述换能信息,确定所述电池在所述第二换能周期内所交换总电量的理论值;
微短路判定模块,用于当所述交换总电量的检测值与所述交换总电量的理论值不匹配时,确定所述电池发生了微短路。
根据本公开的另一个方面,提供一种电子设备,包括:
存储单元,存储有电池微短路检测程序;
处理单元,用于在运行所述电池微短路检测程序时,执行所述电池微短路检测方法的步骤。
根据本公开的另一个方面,提供一种计算机存储介质,所述计算机存储介质存储有电池微短路检测程序,所述电池微短路检测程序被至少一个处理器执行时实现所述电池微短路检测方法的步骤。
本公开中,通过获取电池在换能周期内所交换总电量的检测值,并且基于换能信息计算在电池内无微短路发生时,理论上电池在换能周期内所能够交换总电量的理论值。因此本公开具有较高的检测准确性,能够降低微短路检测的误判性。
并且,由于本公开中电池在换能周期内所交换总电量的检测值和理论值均会伴随着电池老化程度而同步发生改变,因此本公开方案不仅可以检测性能优良的电池内的微短路情况,还能够检测老化电池内的微短路情况;因此针对性能不同的电池,本公开方案具有较强的适用性。
因此,本公开的微短路检测方法具有较高的检测准确性,以及较强的适用性。
应当理解的是,以上的一般描述和后文的细节描述仅是示例性的,并不能限制本公开。
通过参照附图详细描述其示例实施例,本公开的上述和其它目标、特征及优点将变得更加显而易见。
图1是根据一示例示出的一种电子设备的结构示意图;
图2是根据一示例性实施方式示出的电池微短路检测方法的流程图;
图3是根据另一示例性实施方式示出的电池微短路检测方法的部分流程图;
图4是根据另一示例性实施方式示出的电池微短路检测方法的部分流程图;
图5是根据一示例性实施方式示出的一种电池微短路检测装置的结构框图;
图6是根据一示例性实施方式示出的电子设备的系统架构图。
现在将参考附图更全面地描述示例实施例。然而,示例实施例能够以多种形式实施, 且不应被理解为限于在此阐述的范例;相反,提供这些实施例使得本公开将更加全面和完整,并将示例实施例的构思全面地传达给本领域的技术人员。图中相同的附图标记表示相同或类似的结构,因而将省略它们的重复描述。
此外,所描述的特征、结构或特性可以以任何合适的方式结合在一个或更多实施方式中。在下面的描述中,提供许多具体细节从而给出对本公开的实施方式的充分理解。然而,本领域技术人员将意识到,可以实践本公开的技术方案而省略特定细节中的一个或更多,或者可以采用其它的方法、组元、装置、步骤等。在其它情况下,不详细示出或描述公知结构、方法、装置、实现、材料或者操作以避免喧宾夺主而使得本公开的各方面变得模糊。
在本公开中,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或成一体;可以是机械连接,也可以是电连接或可以互相通讯;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本公开中的具体含义。
此外,术语“第一”、“第二”仅用于描述目的,而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此,限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本公开的描述中,“多个”的含义是至少两个,例如两个,三个等,除非另有明确具体的限定。
以下结合本说明书的附图,对本公开的较佳实施方式予以进一步地详尽阐述。
本公开提出一种电子设备,该电子设备可以是配置有电池供电系统的智能终端、移动终端设备。该电子设备包括但不限于被设置成经由有线线路连接,如经由公共交换电话网络(public switched telephone network,PSTN)、数字用户线路(digital subscriber line,DSL)、数字电缆、直接电缆连接,以及/或另一数据连接/网络和/或经由例如,针对蜂窝网络、无线局域网(wireless local area network,WLAN)、诸如手持数字视频广播(digital video broadcasting handheld,DVB-H)网络的数字电视网络、卫星网络、调幅-调频(amplitude demodulation-frequency modulation,AM-FM)广播发送器,以及/或另一通信终端的无线接口接收/发送通信信号的装置。被设置成通过无线接口通信的通信终端可以被称为“无线通信终端”、“无线终端”以及/或“智能终端”。智能终端的示例包括,但不限于卫星或蜂窝电话;可以组合蜂窝无线电电话与数据处理、传真以及数据通信能力的个人通信系统(personal communication system,PCS)终端;可以包括无线电电话、寻呼机、因特网/内联网接入、Web浏览器、记事簿、日历以及/或全球定位系统(global positioning system,GPS)接收器的个人数字助理(Personal Digital Assistant,PDA);以及常规膝上型和/或掌上型接收器或包括无线电电话收发器的其它电子装置。此外,该终端还可以包括但不限于诸如电子书阅读器、智能穿戴设备、移动电源(如充电宝、旅充)、电子烟、无线鼠标、无线键盘、无线耳机、蓝牙音箱等具有充电功能的可充电电子设备。
请参阅图1,图1是本公开电子设备一实施例的结构示意图。电子设备10可以包括 后壳11、显示屏12、电路板、电池。需要说明的是,电子设备10并不限于包括以上内容。其中,后壳11可以形成电子设备10的外部轮廓。在一些实施例中,后壳11可以为金属后壳,比如镁合金、不锈钢等金属。需要说明的是,本申请实施例后壳11的材料并不限于此,还可以采用其它方式,比如:后壳11可以为塑胶后壳、陶瓷后壳、玻璃后壳等。
其中,显示屏12安装在后壳11中。显示屏12电连接至电路板上,以形成电子设备的显示面。在一些实施例中,电子设备10的显示面可以设置非显示区域,比如:电子设备10的顶端或/和底端可以形成非显示区域,即电子设备10在显示屏12的上部或/和下部形成非显示区域,电子设备10可以在非显示区域安装摄像头、受话器等器件。需要说明的是,电子设备10的显示面也可以不设置非显示区域,即显示屏12可以为全面屏。可以将显示屏铺设在电子设备10的整个显示面,以使得显示屏可以在电子设备10的显示面进行全屏显示。
其中,显示屏12可以为液晶显示器,有机发光二极管显示器,电子墨水显示器,等离子显示器,使用其它显示技术的显示器中一种或者几种的组合。显示屏12可以包括触摸传感器阵列(即,显示屏12可以是触控显示屏)。触摸传感器可以是由透明的触摸传感器电极(例如氧化铟锡(ITO)电极)阵列形成的电容式触摸传感器,或者可以是使用其它触摸技术形成的触摸传感器,例如音波触控,压敏触摸,电阻触摸,光学触摸等,本申请实施例不作限制。
需要说明的是,在一些实施例中,可以在显示屏12上盖设一盖板,盖板可以覆盖在显示屏12上,对显示屏12进行保护。盖板可以为透明玻璃盖板,以便显示屏12透过盖板进行显示。在一些实施例中,盖板可以是用诸如蓝宝石等材料制成的玻璃盖板。在一些实施例中,显示屏12安装在后壳11上后,后壳11和显示屏12之间形成收纳空间,收纳空间可以收纳电子设备10的器件,比如电路板、电池等。其中,电路板安装在后壳11中,电路板可以为电子设备10的主板,电路板上可以集成有马达、麦克风、扬声器、耳机接口、通用串行总线接口、摄像头、距离传感器、环境光传感器、受话器以及处理器等功能器件中的一个、两个或多个。
在一些实施例中,电路板可以固定在后壳11内。具体的,电路板可以通过螺钉螺接到后壳11上,也可以采用卡扣的方式卡配到后壳11上。需要说明的是,本申请实施例电路板具体固定到后壳11上的方式并不限于此,还可以其它方式,比如通过卡扣和螺钉共同固定的方式。其中,电池安装在后壳11中,电池11与电路板进行电连接,以向电子设备10提供电源。后壳11可以作为电池的电池盖。后壳11覆盖电池以保护电池,减少电池由于电子设备10的碰撞、跌落等而受到的损坏。
电子设备10还包括充电电路。充电电路可以为电子设备10的电芯充电。充电电路可以用于进一步的调节自适配器输入的充电电压和/或充电电流,以满足电池的充电需求。
电子设备配置有充电接口,充电接口例如可以为USB 2.0接口、Micro USB接口或USB TYPE-C接口。在一些实施例中,充电接口还可以为lightning接口,或者其他任意类 型的能够用于充电的并口或串口。该充电接口通过数据线与适配器连接,适配器从市电获取电能,经过电压变换后,通过数据线传、充电接口传输至充电电路,因此电能通过充电电路得以充入待充电电芯中。
图2示出了本公开一个示例性实施例提供的电池微短路的检测方法的流程图。本实施例以该方法应用于图1所示的终端中来举例说明。该方法包括:
21,获取电池在第一换能周期内所交换总电量的检测值;其中,第一换能周期为放电周期或充电周期。
本公开的电池微短路的检测方法可以应用于电池的放电过程和充电过程中。对于放电周期,可以是指电池被完全充满放电至电量放尽的过程。考虑到由于电池保护板的放电保护或电池所在的电子设备的供电保护,电池可能无法放尽电量。因此放电周期还可以有以下几种形式:电池被充满电,放电至电子设备因供电不足而关机的整个过程;或电池被充满电,放电至电池保护板因电池内电量过低而控制电池停止输出电能的过程;或电池的可用容量从100%放电至0%的过程。
在一示例中,可以是指电池的可用容量从100%放电至0%的过程。例如,从电池被充满电、电池的可用容量为100%,此时放电深度为0,放电至电池无法放出电能而至致电子设备关机、电池的可用容量为0%,此时放电深度为100%的过程。
在另一示例中,放电周期不限于一次放电过程,可以是多次放电过程的部分叠加。例如,在某一次放电过程中,电池的可用容量从50%放电至0%;充满电后,在下一次的放电过程中,对电池进行放电,使电池的可用容量从100%放电至50%。由此,这两次放电过程的累加可以等同为一个放电周期。还需要说明的是,这两次放电过程可以不是相邻的两次放电过程,但为了避免电池性能变化对放电性能造成影响,这两个放电过程之间间隔较少的放电周期。
同样的,对应于充电周期。对于充电周期,可以是指电池内电量放尽至被完全充满充电的一整个过程。考虑到由于电池保护板的充电保护或电池所在的电子设备的供电保护,电池可能无法放尽电量。因此充电周期还可以有以下几种形式:电子设备因供电不足而关机至电池被充满电的过程;或电池保护板因电池内电量过低而控制电池停止输出电能至电池被充满电的过程;或电池的可用容量从0%充电至100%的过程。
在一示例中,充电周期是在一个充电过程中电池的可用容量从0%充电至100%的过程。在另一示例中,充电周期不限于一次充电过程,可以是多次充电过程的部分叠加。例如,在某一次充电过程中,电池的可用容量从50%充电至100%;然后电池放电,放电后可用容量将至0,在下一次的充电过程中,对电池进行充电,使电池的可用容量从0%充电至50%。由此,这两次充电过程的累加可以等同为一个充电周期。还需要说明的是,这两次充电过程可以不是相邻的两次充电过程,但为了避免电池性能变化对充电性能造成影响,这两个充电过程之间间隔较少的充电周期。
对应于放电过程,所交换的电量是指放电电量。对应于充电过程,所交换的电量是指 充电电量。本公开中,所交换总电量是指在一个完整的换能周期中,所交换电量的总和。即所交换总电量对应可以是放电总电量和充电总电量。
在一实施例中,基于换能电流与换能时间来计算换能电量,从而提高环能电量检测值的准确性。具体的,对应于放电过程,通过叠加在单位时间内放电电流,以计算放电总电量。对应于充电过程,通过叠加在单位时间内充电电流,以计算充电总电量。
对于在整个充电过程中的恒流充电阶段,可以通过换能电流与该恒流充电阶段所对应的换能时间以计算换能电量。而对于充电过程中的非恒流阶段,可以利用通过对换能电流进行积分以更加精确的获得电池实际换能电量。
请参阅图3,图3是图2中21的一实施例的流程图。在一实施例中,211,在第一换能周期内,每隔第一单位时长获取电池的换能电流;
212,计算电池的换能电流的积分值,电池的换能电流的积分值作为交换总电量的检测值。
在一示例中,Qmax1=∫idt;其中,Qmax1为电池在第二换能周期内所交换总电量的检测值;i为换能电流,t为第一单位时长。可以理解的是,第一单位时长越小,所计算出的交换总电量的检测值的准确性越高。可选的,第一单位时长小于1秒。
对应于放电阶段,由于电子设备在使用过程中,电池的放电电流较小且较为平稳,因此第一单位时长可以较大。然而,对应于充电阶段,由于充电电流较大,且根据充电模式的不同,在非恒流充电时,充电电流的平稳性较差,因此充电周期所对应的第一单位时长小于或等于放电周期所对应的第一单位时长。
在该实施例中,充电电流可以通过电量计测量,由处理器或其他计算电路对充电电流做积分计算。
在另一实施例中,对于所交换总电量的检测值还可以利用电量计直接测量。
在另一实施例中,还可以根据换能电流的变化率对第一单位时长进行适应性设置。具体的,
在第一换能周期内,每隔第一单位时长获取电池的换能电流,包括:
在第一换能周期开始时,获取电池的换能电流的初始变化率;
根据电池的换能电流的初始变化率,设置第一单位时长;
监控电池的换能电流的变化率变化;
根据换能电流的变化率的变化,更新第一单位时长;
以当前的第一单位时长作为时间间隔,获取电池的换能电流。
可以理解的是,当换能电流的变化率变化越大,第一单位时长越小,当换能电流的变化率变化越大,第一单位时长越大。由此可以灵活地根据当前的充电电流或放电电流的变化,调节第一单位时长,从而使得所计算出的交换总电量的检测值更加准确。
进一步的,本方法还包括,22,获取电池的换能信息;
换能信息可以是指电池的电压、电池的换能电流、电池的荷电状态、电池的放电深度 等信息。
对应于放电阶段,换能信息为放电信息。具体可以是电池的电压、电池的放电电流、电池的放电深度等信息。
对应于充电阶段,换能信息为充电信息。具体可以是电池的电压、电池的充电电流、电池的荷电状态等信息。
23,根据换能信息,确定电池在第二换能周期内所交换总电量的理论值。
第二换能周期与第一换能周期可以是同一个换能周期,也可以不同的换能周期。当第二换能周期与第一换能周期是同一个换能周期时,可以在该换能周期内同时进行交换总电量的理论值和检测值的获取。
当第一换能周期与第二换能周期为不同的换能周期时,第一换能周期与第二换能周期之间所间隔的换能周期个数小于或等于第一预设个数。第一预设个数可以是一小于100的值。
电池在第二换能周期内所交换总电量的理论值是指,在电池内部无微短路发生的情况下,理论上电池在一整个第二换能周期内所能够交换的总电量。
在一实施例中,是基于Qmax2=△Q/(DoD1-DoD2),以计算交换总电量的理论值。其中,Qmax2为换总电量的理论值,DoD1是在第二换能周期内的第一时刻所对应的放电深度,DoD2是在第二换能周期内的第二时刻所对应的放电深度;△Q是电池在第一时刻和第二时刻所交换电量的差值。
请参阅图4。基于上述公式,在该实施例中,22,获取电池的换能信息,包括:
221,获取电池分别在第一时刻所对应的电池的第一电压以及第二时刻所对应的电池的第二电压;
222,获取电池在第一时刻所对应的已交换的第一电量,以及在第二时刻所对应的已交换的第二电量;
23,根据换能信息,确定电池在第二换能周期内所交换总电量的理论值,包括:
231,根据预设的电压差值与电池换能程度的对应关系,确定与第一电压所对应的电池第一换能程度,以及与第二电压所对应的第二换能程度;其中,对应于充电周期,换能程度为电池的荷电状态,对应于放电周期,换能程度为电池的放电深度;
232,计算第一换能程度和第二换能程度的换能程度差值;
233,计算第一电量与第二电量的电量差值;
234,根据电量差值与换能程度差值,确定电池在第二换能周期内所交换总电量的理论值。
对应于放电过程,上述步骤对应为:
221,获取电池分别在第一时刻所对应的电池的第一电压以及第二时刻所对应的电池的第二电压;
222,获取电池在第一时刻所对应的已放出的第一电量,以及在第二时刻所对应的已 放出的第二电量;
23,根据换能信息,确定电池在第二换能周期内所交换总电量的理论值,包括:
231,根据预设的电压差值与电池放电深度的对应关系,确定与第一电压所对应的电池第一换能程度,以及与第二电压所对应的第二换能程度;
232,计算第一放电深度和第二放电深度的放电深度差值;
233,计算第一电量与第二电量的电量差值;
234,根据电量差值与放电深度差值,确定电池在放电周期内所放出总电量的理论值。
在该实施例中,预设的电压差值与电池放电深度的对应关系可以是在电池出厂前在实验室中测定后,保存在电子设备中。该对应关系可以以表格或曲线的形式体现。通过查找与第一电压匹配的第一放电深度,与第二电压匹配的第二放电深度,以确定第一放电深度和第二放电深度的放电深度差值。
对应于充电过程,上述步骤对应为:
221,获取电池分别在第一时刻所对应的电池的第一电压以及第二时刻所对应的电池的第二电压;
222,获取电池在第一时刻所对应的已放出的第一电量,以及在第二时刻所对应的已放出的第二电量;
23,根据换能信息,确定电池在第二换能周期内所交换总电量的理论值,包括:
231,根据预设的电压差值与电池荷电状态的对应关系,确定与第一电压所对应的电池第一荷电状态,以及与第二电压所对应的第二荷电状态;
232,计算第一荷电状态和第二荷电状态的荷电状态差值;
233,计算第一电量与第二电量的电量差值;
234,根据电量差值与荷电状态差值,确定电池在充电周期内所吸收总电量的理论值。
在该实施例中,预设的电压差值与电池荷电状态的对应关系可以是在电池出厂前在实验室中测定后,保存在电子设备中。该对应关系可以以表格或曲线的形式体现。通过查找与第一电压匹配的第一荷电状态,与第二电压匹配的第二荷电状态,以确定第一荷电状态和第二荷电状态的荷电状态差值。
进一步的,在上述步骤为了提高所获取的第一电量和第二电量的准确性,在一实施例中,222,获取电池在第一时刻所对应的已交换的第一电量,以及在第二时刻所对应的已交换的第二电量,包括:
自换能开始时刻至第一时刻,每隔第二预设时长获取电池的换能电流,以及自换能开始时刻至第二时刻,每隔第二预设时长获取电池的换能电流;
分别计算电池的换能电流对应于第一时刻和第二时刻的积分值,以确定第一时刻所对应的已交换的第一电量,以及第二时刻所对应的已交换的第二电量。
在该实施例中,是基于对换能电流的积分,以确定第一电量和第二电量,可以理解的是,在计算第一电量时,是对从换能开始至第一时刻的时间内,换能电流的总和;在计算 第二电量时,是对从换能开始至第二时刻的时间内,换能电流的总和。
可以理解的是,第二预设时长越小,所计算出的交换总电量的检测值的准确性越高。可选的,第二预设时长小于1秒。
对应于放电过程,上述步骤相应为:
自放电开始时刻至第一时刻,每隔第二预设时长获取电池的放电电流,以及自放电开始时刻至第二时刻,每隔第二预设时长获取电池的放电电流;
分别计算电池的放电电流对应于第一时刻和第二时刻的积分值,以确定第一时刻所对应的已放出的第一电量,以及第二时刻所对应的已放出的第二电量。
进一步的,为了提高或获取到的电池第一电压和第二电压的准确性,因此在一实施例中,获取电池分别在第一时刻所对应的电池的第一电压以及第二时刻所对应的电池的第二电压,还包括:
在第一时刻和第二时刻前的第一预设时长,保持电池的换能电流小于或等于第一预设换能电流阈值。
第一预设换能电流阈值可以设定为一较小的值。例如100mA以下。第一预设换能电流阈值设定的越小,所读取的第一电压值和第二电压值就越准确。
在一示例中,第一时刻和第二时刻为预先设定好的,因此可以通过处理器控制充电电路,以距离第一时刻和第二时刻前的第一预设时长时,调节换能电流,以使换能电流降至第一预设换能电流阈值以下。
在另一示例中,第一时刻和第二时刻没有预先设定,而是根据换能过程中电流的变化来设定的。例如,通过监控换能电流,当换能电流持续小于第一预设换能电流阈值达到第一预设时长时,则采样电池电压,以作为第一电压和第二电压。
例如,可以设定在换能开始的时刻作为第一时刻,在换能过程中选取符合条件时刻作为第二时刻。
可以理解的是,本公开的微短路检测方法可以应用于电池使用过程中的任何阶段。无论是新电池还是老化电池。例如在电池老化阶段,电池的性能发生衰减。因此所获取电池在第一换能周期内所交换总电量的检测值相对于新电池来说会降低。然而由于本公开中,在计算第二换能周期内所交换总电量的理论值时,随着换能的进行,老化电池在电压变化率上会发生与电池老化程度同步的改变,因此在计算第二换能周期内所交换总电量的理论值时,电量差值与第一时刻、第二时刻均会同步对应电池的老化程度。因此,所计算出的电池在第二换能周期内所交换总电量的理论值也能够与电池的性能变化相对应。所以即使电池发生了老化,本公开的检测方法仍然能够对微短路进行有效的检测。
对比相关技术中,电池微短路的识别方法,多是利用微短路时电池单体的内阻出现异常的现象,对发生微短路的电池单体进行识别。然而这种方式对电池微短路检测未考虑到电池老化情况下内阻值波动的情形,比如电池在经过数百次循环后,电池的内阻值会翻倍增加,这样会导致内阻发生假象的“内阻异常”,从而导致结果误判。此外,内阻值还受 温度波动,如果单一阈值设定,就会出现温度波动时内阻值异常的情况,所以误判的可能性很大。
因此,本公开方案能够提高微短路检测的准确性、减少误判的发生、还能够针对老化电池进行检测。
为了进一步提高第二换能周期内所交换总电量的理论值的计算准确性。在本实施例中设置在第二换能周期内设置多个第一时刻和第二时刻,一第一时刻和一第二时刻形成一组;方法还包括:
对应每组第一时刻和第二时刻,分别计算相应的换能周期内所交换总电量的理论值;
根据每组第一时刻和第二时刻所对应计算出的电池在第二换能周期内所交换总电量的理论值,确定最终的电池在第二换能周期内所交换总电量的理论值。
可以理解的是,各个第一时刻并非对应同一个时间节点。各个第二时刻也并非对应同一个时间节点。例如多个第一时刻可以设定放电开始时刻、放电20分钟后、放电40分钟后等。多个第二时刻可以设定放电40分钟后、放电80分钟后、放电80分钟后等。任意的第一时刻和第二时刻可以组合形成为一组。
在另一示例中,第一时刻、第二时刻并非为预设好的值,而是根据电池的换能电流波动情况,由处理单元随机进行选择的。
在一示例中,换能周期为放电周期。在21中获取的是在第100个放电周期所对应的交换总电量的检测值。在22中获取的是在步骤103个放电周期所对应的电池的换能信息。
进一步的,本公开的方法还包括:24,当交换总电量的检测值与交换总电量的理论值不匹配时,确定电池发生了微短路,包括:
计算交换总电量的检测值与交换总电量的理论值的差值;
当交换总电量的检测值与交换总电量的理论值的差值的绝对值大于第一差值时,确定电池发生了微短路。
在此考虑到检测误差、计算误差等不可控因素,设置交换总电量的检测值与交换总电量的理论值之间具有一定可允许的偏差。具体的,可以通过处理器或运算电路进行交换总电量的检测值与交换总电量的理论值的差值的计算。
进一步的,在确定了电池内发生了微短路之后,还可以根据交换总电量的检测值与交换总电量的理论值的差值大小,以确定发生微短路的程度,以及是否需要进行干预。
本公开中,通过获取电池在换能周期内所交换总电量的检测值,并且基于换能信息计算在电池内无微短路发生时,理论上电池在换能周期内所能够交换总电量的理论值。因此本公开具有较高的检测准确性,降低微短路检测的误判性。
并且,由于本公开中电池在换能周期内所交换总电量的检测值和理论值均会伴随着电池老化程度而同步发生改变,因此本公开方案不仅可以检测性能优良的电池内的微短路情况,还能够检测老化电池内的微短路情况;因此针对性能不同的电池,本公开方案具有较强的适用性。
因此,本公开的微短路检测方法具有较高的检测准确性,以及较强的适用性。
此外,需要注意的是,上述附图仅是根据本公开示例性实施方式的方法所包括的处理的示意性说明,而不是限制目的。易于理解,上述附图所示的处理并不表明或限制这些处理的时间顺序。另外,也易于理解,这些处理可以是例如在多个模块中同步或异步执行的。
下述为本公开装置实施例,可以用于执行本公开方法实施例。对于本公开装置实施例中未披露的细节,请参照本公开方法实施例。请参阅图5,具体的,本实施例中,电池微短路的检测装置30,包括:
总电量检测值获取模块31,用于获取电池在第一换能周期内所交换总电量的检测值;
换能信息获取模块32,用于获取电池的换能信息;
总电量的理论值确定模块33,用于根据换能信息,确定电池在第二换能周期内所交换总电量的理论值;
微短路判定模块34,用于当交换总电量的检测值与交换总电量的理论值不匹配时,确定电池发生了微短路。
在一实施例中,电池微短路的检测装置还包括:
换能信息获取模块32,还用于在第一换能周期内,每隔第一单位时长获取电池的换能电流;
计算模块,用于计算电池的换能电流的积分值,电池的换能电流的积分值作为交换总电量的检测值。
在一实施例中,充电周期所对应的第一单位时长小于或等于放电周期所对应的第一单位时长。
在一实施例中,换能信息获取模块32,用于获取电池分别在第一时刻所对应的电池的第一电压以及第二时刻所对应的电池的第二电压;
换能信息获取模块32,用于获取电池在第一时刻所对应的已交换的第一电量,以及在第二时刻所对应的已交换的第二电量;
总电量的理论值确定模块33还用于根据预设的电压差值与电池换能程度的对应关系,确定与第一电压所对应的电池第一换能程度,以及与第二电压所对应的第二换能程度;其中,对应于充电周期,换能程度为电池的荷电状态,对应于放电周期,换能程度为电池的放电深度;
计算模块,用于计算第一换能程度和第二换能程度的换能程度差值;
计算模块,用于计算第一电量与第二电量的电量差值;
总电量的理论值确定模块33,用于根据电量差值与换能程度差值,确定电池在第二换能周期内所交换总电量的理论值。
在一实施例中,电池微短路的检测装置30还具有保持模块,保持模块用于在第一时刻和第二时刻前的第一预设时长,保持电池的换能电流小于或等于第一预设换能电流阈值。
在一实施例中,第一时刻为第二换能周期开始的时刻。
在一实施例中,换能信息获取模块32,用于自换能开始时刻至第一时刻,每隔第二预设时长获取电池的换能电流,以及自换能开始时刻至第二时刻,每隔第二预设时长获取电池的换能电流;
计算模块,用于分别计算电池的换能电流对应于第一时刻和第二时刻的积分值,以确定第一时刻所对应的已交换的第一电量,以及第二时刻所对应的已交换的第二电量。
在一实施例中,总电量检测值获取模块31,用于获取电池在第一换能周期内所交换总电量的检测值;
换能信息获取模块32,用于获取电池在第二换能周期内的换能信息;
其中,第一换能周期与第二换能周期之间所间隔的换能周期个数小于或等于第一预设个数。
在一实施例中,计算模块,还用于计算交换总电量的检测值与交换总电量的理论值的差值;
微短路判定模块34,用于当交换总电量的检测值与交换总电量的理论值的差值的绝对值大于第一差值时,确定电池发生了微短路。
需要注意的是,上述附图5中所示的框图是功能实体,不一定必须与物理或逻辑上独立的实体相对应。可以采用软件形式来实现这些功能实体,或在一个或多个硬件模块或集成电路中实现这些功能实体,或在不同网络和/或处理器装置和/或微控制器装置中实现这些功能实体。
本实施例还提出一种电子设备4,包括存储单元、处理单元;存储单元上存储有电池内短路的检测程序;处理单元用于在运行电池内短路的检测程序时,执行上述电池微短路的检测方法的步骤。
本公开所提出的电子设备4包括电池、充电电路、存储单元、处理单元;存储单元用于存储电池内短路的检测程序;处理单元用于运行电池内短路的检测程序,电池内短路的检测程序被执行时,运行上述的电池内短路的检测方法,以进行电池内短路的检测。
请参阅图6,电子设备4以通用计算设备的形式表现。电子设备4的组件可以包括但不限于:上述至少一个处理单元42、上述至少一个存储单元41、连接不同系统组件(包括存储单元41和处理单元42)的总线43,其中,存储单元41存储有程序代码,程序代码可以被处理单元42执行,使得处理单元42执行本说明书上述实施例部分中描述的根据本公开各种示例性实施方式的步骤。
存储单元41可以包括易失性存储单元形式的可读介质,例如随机存取存储单元(RAM)411和/或高速缓存存储单元412,还可以进一步包括只读存储单元(ROM)413。
存储单元41还可以包括具有一组(至少一个)程序模块415的程序/实用工具414,这样的程序模块415包括但不限于:操作系统、一个或者多个应用程序、其它程序模块以及程序数据,这些示例中的每一个或某种组合中可能包括网络环境的实现。
总线43可以为表示几类总线结构中的一种或多种,包括存储单元总线或者存储单元 控制器、外围总线、图形加速端口、处理单元或者使用多种总线结构中的任意总线结构的局域总线。
电子设备4也可以与一个或多个外部设备50(例如键盘、指向设备、蓝牙设备等)通信,还可与一个或者多个使得用户能与该电子设备4交互的设备通信,和/或与使得该机器人的电子设备4能与一个或多个其它计算设备进行通信的任何设备(例如路由器、调制解调器、显示单元44等等)通信。这种通信可以通过输入/输出(I/O)接口45进行。并且,机器人的电子设备4还可以通过网络适配器46与一个或者多个网络(例如局域网(LAN),广域网(WAN)和/或公共网络,例如因特网)通信。如图6所示,网络适配器46通过总线43与机器人的电子设备4的其它模块通信。应当明白,尽管图6中未示出,可以结合机器人的电子设备4使用其它硬件和/或软件模块,包括但不限于:微代码、设备驱动器、冗余处理单元、外部磁盘驱动阵列、RAID系统、磁带驱动器以及数据备份存储系统等。
通过以上的实施方式的描述,本领域的技术人员易于理解,这里描述的示例实施方式可以通过软件实现,也可以通过软件结合必要的硬件的方式来实现。因此,根据本公开实施方式的技术方案可以以软件产品的形式体现出来,该软件产品可以存储在一个非易失性存储介质(可以是CD-ROM,U盘,移动硬盘等)中或网络上,包括若干指令以使得一台计算设备(可以是个人计算机、服务器、终端装置、或者网络设备等)执行根据本公开实施方式的方法。
本公开还提出一种计算机可读存储介质可以采用便携式紧凑盘只读存储器(CD-ROM)并包括程序代码,并可以在终端设备,例如个人电脑上运行。然而,本公开的程序产品不限于此,在本公开中,可读存储介质可以是任何包含或存储程序的有形介质,该程序可以被指令执行系统、装置或者器件使用或者与其结合使用。
上述计算机可读介质承载有一个或者多个程序,当上述一个或者多个程序被一个该设备执行时,使得该计算机可读介质实现如图2所示的电池微短路的检测方法。
虽然已参照几个典型实施方式描述了本公开,但应当理解,所用的术语是说明和示例性、而非限制性的术语。由于本公开能够以多种形式具体实施而不脱离发明的精神或实质,所以应当理解,上述实施方式不限于任何前述的细节,而应在随附权利要求所限定的精神和范围内广泛地解释,因此落入权利要求或其等效范围内的全部变化和改型都应为随附权利要求所涵盖。
Claims (20)
- 一种电池微短路的检测方法,其特征在于,包括:获取电池在第一换能周期内所交换总电量的检测值,其中,换能周期为充电周期或放电周期;获取所述电池在第二换能周期内的换能信息;根据所述换能信息,确定所述电池在所述第二换能周期内所交换总电量的理论值;当所述交换总电量的检测值与所述交换总电量的理论值不匹配时,确定所述电池发生了微短路。
- 根据权利要求1所述的方法,其特征在于,所述获取电池在第一换能周期内所交换总电量的检测值,包括:在所述第一换能周期内,每隔第一单位时长获取所述电池的换能电流;计算所述电池的换能电流的积分值,所述电池的换能电流的积分值作为所述交换总电量的检测值。
- 根据权利要求2所述的方法,其特征在于,所述在所述第一换能周期内,每隔第一单位时长获取所述电池的换能电流,包括:在第一换能周期开始时,获取所述电池的换能电流的初始变化率;根据所述电池的换能电流的初始变化率,设置所述第一单位时长;监控所述电池的换能电流的变化率变化;根据所述换能电流的变化率的变化,更新所述第一单位时长;以当前的所述第一单位时长作为时间间隔,获取所述电池的换能电流。
- 根据权利要求2所述的方法,其特征在于,所述充电周期对应的所述第一单位时长小于或等于所述放电周期对应的所述第一单位时长。
- 根据权利要求1所述的方法,其特征在于,所述获取所述电池在第二换能周期内的换能信息,包括:获取所述电池分别在第一时刻所对应的所述电池的第一电压以及第二时刻所对应的所述电池的第二电压;获取所述电池在所述第一时刻所对应的已交换的第一电量,以及在所述第二时刻所对应的已交换的第二电量;所述根据所述换能信息,确定所述电池在所述第二换能周期内所交换总电量的理论值,包括:根据预设的电压差值与电池换能程度的对应关系,确定与所述第一电压所对 应的所述电池第一换能程度,以及与所述第二电压所对应的第二换能程度;其中,对应于所述充电周期,所述换能程度为电池的荷电状态,对应于所述放电周期,所述换能程度为电池的放电深度;计算所述第一换能程度和所述第二换能程度的换能程度差值;计算所述第一电量与所述第二电量的电量差值;根据所述电量差值与所述换能程度差值,确定所述电池在所述第二换能周期内所交换总电量的理论值。
- 根据权利要求5所述的方法,其特征在于,在所述第二换能周期内设置多个所述第一时刻和多个所述第二时刻,一所述第一时刻和一所述第二时刻形成一组;所述方法还包括:对应每组所述第一时刻和所述第二时刻,分别计算相应的所述第二换能周期内所交换总电量的理论值;根据每组所述第一时刻和所述第二时刻所对应计算出的所述电池在所述第二换能周期内所交换总电量的理论值,确定最终的所述电池在所述第二换能周期内所交换总电量的理论值。
- 根据权利要求5所述的方法,其特征在于,所述获取所述电池分别在第一时刻所对应的所述电池的第一电压以及第二时刻所对应的所述电池的第二电压,还包括:在所述第一时刻和所述第二时刻前的第一预设时长,保持所述电池的换能电流小于或等于第一预设换能电流阈值。
- 根据权利要求5所述的方法,其特征在于,所述第一时刻为所述第二换能周期开始的时刻。
- 根据权利要求5所述的方法,其特征在于,所述获取所述电池在所述第一时刻所对应的已交换的第一电量,以及在所述第二时刻所对应的已交换的第二电量,包括:自所述第二换能周期开始时刻至所述第一时刻,每隔第二预设时长获取所述电池的换能电流,以及自所述换能过程开始时刻至所述第二时刻,每隔所述第二预设时长获取所述电池的换能电流;分别计算所述电池的换能电流对应于所述第一时刻和所述第二时刻的积分值,以确定所述第一时刻所对应的已交换的第一电量,以及所述第二时刻所对应的已交换的第二电量。
- 根据权利要求1所述的方法,其特征在于,所述当所述交换总电量的检 测值与所述交换总电量的理论值不匹配时,确定所述电池发生了微短路,包括:计算所述交换总电量的检测值与所述交换总电量的理论值的差值;当所述交换总电量的检测值与所述交换总电量的理论值的差值的绝对值大于第一差值时,确定所述电池发生了微短路。
- 根据权利要求1所述的方法,其特征在于,所述放电周期由所述电池的可用容量为100%连续放电至0%;或所述放电周期由电池的可用容量为100%连续放电至所述电池所在的电子设备因供电不足而关机;所述充电周期由电池的可用容量为0%连续充电至100%;或所述充电周期由所述电池所在的电子设备因供电不足而处于关机状态充电至所述电池的可用容量为100%。
- 一种电池微短路的检测装置,其特征在于,包括:总电量检测值获取模块,用于获取电池在第一换能周期内所交换总电量的检测值;其中,换能周期为放电周期或充电周期;换能信息获取模块,用于获取所述电池在第二换能周期内的换能信息;总电量的理论值确定模块,用于根据所述换能信息,确定所述电池在所述第二换能周期内所交换总电量的理论值;微短路判定模块,用于当所述交换总电量的检测值与所述交换总电量的理论值不匹配时,确定所述电池发生了微短路。
- 根据权利要求12所述的装置,其特征在于,包括:所述换能信息获取模块还用于在所述第一换能周期内,每隔第一单位时长获取所述电池的换能电流;计算模块,用于计算所述电池的换能电流的积分值,所述电池的换能电流的积分值作为所述交换总电量的检测值。
- 根据权利要求13所述的装置,其特征在于,包括:所述换能信息获取模块还用于在第一换能周期开始时,获取所述电池的换能电流的初始变化率;根据所述电池的换能电流的初始变化率,设置所述第一单位时长;监控所述电池的换能电流的变化率变化;根据所述换能电流的变化率的变化,更新所述第一单位时长;以当前的所述第一单位时长作为时间间隔,获取所述电池的换能电流。
- 根据权利要求12所述的装置,其特征在于,包括:所述换能信息获取模块还用于获取所述电池分别在第一时刻所对应的所述电池的第一电压以及第二时刻所对应的所述电池的第二电压;获取所述电池在所述 第一时刻所对应的已交换的第一电量,以及在所述第二时刻所对应的已交换的第二电量;所述总电量的理论值确定模块还用于根据预设的电压差值与电池换能程度的对应关系,确定与所述第一电压所对应的所述电池第一换能程度,以及与所述第二电压所对应的第二换能程度;其中,对应于所述充电周期,所述换能程度为电池的荷电状态,对应于所述放电周期,所述换能程度为电池的放电深度;以及根据所述第一电量与所述第二电量的电量差值与所述换能程度差值,确定所述电池在所述第二换能周期内所交换总电量的理论值;计算模块,用于计算所述第一换能程度和所述第二换能程度的换能程度差值;计算所述第一电量与所述第二电量的所述电量差值。
- 根据权利要求15所述的装置,其特征在于,所述装置还包括:保持模块,用于在所述第一时刻和所述第二时刻前的第一预设时长,保持所述电池的换能电流小于或等于第一预设换能电流阈值。
- 根据权利要求15所述的装置,其特征在于,包括:所述换能信息获取模块,还用于自所述第二换能周期开始时刻至所述第一时刻,每隔第二预设时长获取所述电池的换能电流,以及自所述换能过程开始时刻至所述第二时刻,每隔所述第二预设时长获取所述电池的换能电流;所述计算模块还用于分别计算所述电池的换能电流对应于所述第一时刻和所述第二时刻的积分值,以确定所述第一时刻所对应的已交换的第一电量,以及所述第二时刻所对应的已交换的第二电量。
- 根据权利要求12所述的装置,其特征在于,包括:计算模块,用于计算所述交换总电量的检测值与所述交换总电量的理论值的差值;所述微短路判定模块还用于当所述交换总电量的检测值与所述交换总电量的理论值的差值的绝对值大于第一差值时,确定所述电池发生了微短路。
- 一种电子设备,其特征在于,包括:存储单元,存储有电池微短路检测程序;处理单元,用于在运行所述电池微短路检测程序时,执行权利要求1至11任一项所述电池微短路检测方法的步骤。
- 一种计算机存储介质,其特征在于,所述计算机存储介质存储有电池微短路检测程序,所述电池微短路检测程序被至少一个处理器执行时实现权利要求1至11任一项所述电池微短路检测方法的步骤。
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Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107064803A (zh) * | 2016-12-16 | 2017-08-18 | 蔚来汽车有限公司 | 电池内短路的在线检测方法 |
US20180062401A1 (en) * | 2016-08-24 | 2018-03-01 | The Boeing Company | Detecting internal short circuits in batteries |
CN107843802A (zh) * | 2017-10-23 | 2018-03-27 | 北京小米移动软件有限公司 | 内短路检测方法及装置 |
CN108152755A (zh) * | 2018-01-19 | 2018-06-12 | 上海理工大学 | 在线定量诊断电池微短路故障的方法 |
CN108241102A (zh) * | 2016-12-23 | 2018-07-03 | 华为技术有限公司 | 一种电池微短路的检测方法及装置 |
CN108318775A (zh) * | 2018-05-11 | 2018-07-24 | 北京市亿微科技有限公司 | 在线诊断电池短路故障的方法及装置 |
CN110018422A (zh) * | 2018-01-05 | 2019-07-16 | 宁德新能源科技有限公司 | 一种电池管理方法及装置 |
CN110888072A (zh) * | 2019-11-28 | 2020-03-17 | Oppo广东移动通信有限公司 | 电池微短路的检测方法及装置、电子设备 |
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---|---|---|---|---|
JP4739040B2 (ja) * | 2005-02-18 | 2011-08-03 | パナソニック株式会社 | 二次電池の内部短絡検出装置、二次電池の内部短絡検出方法、二次電池の電池パック及び電子機器 |
JP2011135656A (ja) * | 2009-12-22 | 2011-07-07 | Sanyo Electric Co Ltd | バッテリシステム及びこれを備える車両並びにバッテリシステムの内部短絡検出方法 |
US20170227607A1 (en) * | 2016-02-04 | 2017-08-10 | Mediatek Inc. | Schemes capable of efficiently and accurately estimating and/or predicting available battery capacity and battery aging factor |
JP6741211B2 (ja) * | 2016-08-05 | 2020-08-19 | 株式会社Gsユアサ | 蓄電装置、車両、及び蓄電装置の充電制御方法 |
CN106646256B (zh) * | 2016-12-21 | 2020-05-29 | 惠州亿纬创能电池有限公司 | 电池容量计算方法 |
CN109375107A (zh) * | 2018-11-19 | 2019-02-22 | 北京现代汽车有限公司 | 电池剩余电量检测方法和装置 |
-
2019
- 2019-11-28 CN CN201911192450.4A patent/CN110888072A/zh active Pending
-
2020
- 2020-11-23 WO PCT/CN2020/130929 patent/WO2021104212A1/zh active Application Filing
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20180062401A1 (en) * | 2016-08-24 | 2018-03-01 | The Boeing Company | Detecting internal short circuits in batteries |
CN107064803A (zh) * | 2016-12-16 | 2017-08-18 | 蔚来汽车有限公司 | 电池内短路的在线检测方法 |
CN108241102A (zh) * | 2016-12-23 | 2018-07-03 | 华为技术有限公司 | 一种电池微短路的检测方法及装置 |
CN107843802A (zh) * | 2017-10-23 | 2018-03-27 | 北京小米移动软件有限公司 | 内短路检测方法及装置 |
CN110018422A (zh) * | 2018-01-05 | 2019-07-16 | 宁德新能源科技有限公司 | 一种电池管理方法及装置 |
CN108152755A (zh) * | 2018-01-19 | 2018-06-12 | 上海理工大学 | 在线定量诊断电池微短路故障的方法 |
CN108318775A (zh) * | 2018-05-11 | 2018-07-24 | 北京市亿微科技有限公司 | 在线诊断电池短路故障的方法及装置 |
CN110888072A (zh) * | 2019-11-28 | 2020-03-17 | Oppo广东移动通信有限公司 | 电池微短路的检测方法及装置、电子设备 |
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