HK1258123B - Terminal device and battery safety monitoring method and monitoring system - Google Patents

Description

Terminal equipment and battery safety monitoring method and monitoring system thereof

Technical Field

The present invention relates to the field of terminal device technologies, and in particular, to a battery safety monitoring method for a terminal device, a battery safety monitoring system for a terminal device, and a terminal device having the battery safety monitoring system.

Background

The battery is a power source of the terminal equipment and provides stable power supply for a mobile terminal such as a mobile phone for a long time. The batteries used for mobile terminals at first are nickel-chromium batteries and nickel-hydrogen batteries, but with the increase of screens and enhancement of functions of mobile terminals, the capacity of the nickel-chromium batteries and the capacity of the nickel-hydrogen batteries cannot meet the energy requirement, and lithium ion batteries have more advantages, such as high energy density, so that the batteries can be lighter and have larger capacity, are faster to charge and discharge, have no memory effect compared with the nickel-chromium batteries and the nickel-hydrogen batteries, and have the smallest element damage to the environment, so that the batteries gradually replace the traditional nickel-chromium batteries and the nickel-hydrogen batteries.

Although the occurrence of the lithium ion battery effectively solves the problem of battery capacity, there are safety problems, for example, when the lithium ion battery is damaged to cause short circuit, heat is generated inside the battery cell, and when the heat is generated too fast, the battery is likely to be ignited and burst, and therefore, the battery needs to be monitored safely to prevent accidents.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the art described above. Therefore, a first object of the present invention is to provide a battery safety monitoring method for a terminal device, which can monitor battery abnormality when the battery is damaged by monitoring whether a voltage sudden change occurs in the battery and whether a temperature abnormal region exists on the surface of the battery, so as to prompt and send repair in time, thereby avoiding potential safety hazards caused by the battery abnormality.

A second object of the invention is to propose a non-transitory computer-readable storage medium.

A third object of the present invention is to provide a battery safety monitoring system of a terminal device.

A fourth object of the present invention is to provide a terminal device.

In order to achieve the above object, a battery safety monitoring method for a terminal device according to an embodiment of a first aspect of the present invention includes the following steps: the method comprises the steps of obtaining battery voltage of the terminal equipment in real time, and obtaining the temperature of each area of the battery surface of the terminal equipment in real time, wherein the battery surface is divided into a plurality of areas; judging whether the battery of the terminal equipment generates a voltage mutation phenomenon according to the battery voltage acquired in real time, and judging whether a temperature abnormal area exists on the surface of the battery according to the temperature of each area; and if the battery has a voltage mutation phenomenon and the surface of the battery has a temperature abnormal region, judging that the battery is abnormal currently.

According to the battery safety monitoring method of the terminal equipment, the battery voltage of the terminal equipment and the temperature of each area on the surface of the battery are obtained in real time, then whether the voltage mutation phenomenon occurs to the battery of the terminal equipment is judged according to the battery voltage obtained in real time, whether a temperature abnormal area exists on the surface of the battery is judged according to the temperature of each area, and finally the current abnormality of the battery is judged when the voltage mutation phenomenon occurs to the battery and the temperature abnormal area exists on the surface of the battery, namely, when the battery is damaged at present, the battery voltage can suddenly jump, and meanwhile, the heating phenomenon can occur to the short-circuited area in the battery due to the damage, the invention judges whether the battery is abnormal at present by detecting whether the battery voltage suddenly jumps or not and whether the temperature abnormal area exists on the surface of the battery, thereby the battery can be monitored in real time when the battery is damaged, the realization in time reminds and send and repair, avoids because of the potential safety hazard that the battery unusual brought, has improved the security when terminal equipment uses greatly.

In addition, the battery safety monitoring method of the terminal device according to the above embodiment of the present invention may further have the following additional technical features:

according to one embodiment of the invention, when the battery is in a no-load condition or a light-load condition, if a voltage sudden change phenomenon occurs in the battery and a temperature abnormal region exists on the surface of the battery, it is determined that the battery is currently abnormal.

According to an embodiment of the invention, when the battery is abnormal currently, the abnormal battery is also marked, and the terminal equipment is controlled to send out the reminding information that the battery is abnormal when the terminal equipment is in the starting state.

According to an embodiment of the present invention, the method for determining whether a voltage jump phenomenon occurs in a battery of the terminal device according to a battery voltage obtained in real time includes: judging whether the battery has instantaneous voltage drop according to the battery voltage acquired in real time; and if the voltage of the battery drops instantly, judging that the voltage of the battery suddenly changes.

According to one embodiment of the invention, when the voltage of the battery is reduced within a preset time by a magnitude larger than or equal to a preset value, the battery is judged to have instantaneous voltage drop.

According to one embodiment of the invention, the temperature of each region is acquired by a temperature sensing probe correspondingly arranged for each region.

According to one embodiment of the invention, the plurality of regions are arranged in an array.

According to one embodiment of the invention, the plurality of regions includes a cell corner region, a header region, and a tail region.

According to one embodiment of the invention, when the battery is abnormal currently, fault grading is further carried out according to the condition that the battery has sudden voltage change and the temperature information of the temperature abnormal region, and the corresponding functions of the terminal equipment are limited according to the fault grades.

In order to achieve the above object, a second aspect of the present invention provides a non-transitory computer-readable storage medium, on which a computer program is stored, and the computer program is executed by a processor to implement the above battery safety monitoring method.

According to the non-transitory computer readable storage medium of the embodiment of the invention, by executing the battery safety monitoring method, whether the battery is abnormal currently can be judged by monitoring whether the battery voltage jumps suddenly or not and whether the temperature abnormal area exists on the surface of the battery or not, so that the battery can be monitored in real time when damaged, prompt and repair delivery can be realized in time, potential safety hazards caused by abnormal battery are avoided, and the safety of terminal equipment in use is greatly improved.

In order to achieve the above object, a battery safety monitoring system of a terminal device according to a third embodiment of the present invention includes: the first acquisition module is used for acquiring the battery voltage of the terminal equipment in real time; the second acquisition module is used for acquiring the temperature of each area on the surface of the battery of the terminal equipment in real time, wherein the surface of the battery is divided into a plurality of areas; the judging module is used for judging whether the voltage mutation phenomenon occurs to the battery of the terminal equipment according to the battery voltage acquired in real time and judging whether a temperature abnormal area exists on the surface of the battery according to the temperature of each area; and the safety monitoring module is used for judging that the battery is abnormal currently when the battery has a voltage mutation phenomenon and a temperature abnormal region exists on the surface of the battery.

According to the battery safety monitoring system of the terminal equipment, the battery voltage of the terminal equipment is obtained in real time through the first obtaining module, the temperature of each area on the surface of the battery is obtained in real time through the second obtaining module, then the judging module judges whether the battery of the terminal equipment generates voltage mutation phenomenon or not according to the battery voltage obtained in real time, judges whether a temperature abnormal area exists on the surface of the battery or not according to the temperature of each area, and finally judges whether the battery is abnormal currently through the safety monitoring module when the battery generates the voltage mutation phenomenon and the temperature abnormal area exists on the surface of the battery, namely, when the battery is damaged currently, the battery voltage suddenly jumps and the heating phenomenon occurs in the area of the internal short circuit of the battery due to the damage, the battery safety monitoring system judges whether the battery is abnormal currently or not by detecting whether the battery voltage suddenly jumps or not and whether the temperature abnormal area exists on the surface of the battery or not, therefore, the battery can be monitored in real time when damaged, timely reminding and repair sending are realized, potential safety hazards caused by abnormal battery are avoided, and the safety of the terminal equipment in use is greatly improved.

In addition, the battery safety monitoring system of the terminal device proposed according to the above embodiment of the present invention may further have the following additional technical features:

according to one embodiment of the invention, when the battery is in an idle load condition or a light load condition, if a voltage sudden change phenomenon occurs in the battery and a temperature abnormal region exists on the surface of the battery, the safety monitoring module judges that the battery is abnormal currently.

According to an embodiment of the present invention, when the battery is currently abnormal, the security monitoring module is further configured to mark the abnormal battery, and control the terminal device to send a notification message that the battery is abnormal when the terminal device is in a power-on state.

According to an embodiment of the present invention, the determining module is further configured to determine whether the battery has a voltage transient drop according to a battery voltage obtained in real time; and if the voltage of the battery drops instantly, judging that the voltage of the battery suddenly changes.

According to an embodiment of the invention, when the voltage of the battery decreases by a magnitude greater than or equal to a preset value within a preset time, the determining module determines that the voltage of the battery drops instantaneously.

According to an embodiment of the invention, the second acquiring module acquires the temperature of each region through the temperature sensing probe correspondingly arranged in each region.

According to one embodiment of the invention, the plurality of regions are arranged in an array.

According to one embodiment of the invention, the plurality of regions includes a cell corner region, a header region, and a tail region.

According to an embodiment of the present invention, when the battery is abnormal currently, the safety monitoring module is further configured to perform fault level classification according to a voltage sudden change condition of the battery and temperature information of a temperature abnormal region, and limit a corresponding function of the terminal device according to the fault level.

In order to achieve the above object, a fourth aspect of the present invention provides a terminal device, which includes the battery safety monitoring system of the terminal device.

According to the terminal equipment provided by the embodiment of the invention, through the battery safety monitoring system of the terminal equipment, whether the battery is abnormal currently can be judged by monitoring whether the voltage of the battery jumps suddenly or not and whether the temperature abnormal area exists on the surface of the battery or not, so that the battery can be monitored in real time when being damaged, prompt and repair can be timely realized, potential safety hazards caused by battery abnormity are avoided, and the use safety is greatly improved.

Drawings

FIG. 1 is a schematic diagram of a battery damage process according to one embodiment of the present invention;

fig. 2 is a flowchart of a battery safety monitoring method of a terminal device according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of battery surface area division according to one embodiment of the present invention;

FIG. 4 is a schematic diagram of battery surface area division according to another embodiment of the present invention;

FIG. 5 is a schematic diagram of a voltage spike monitoring circuit according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a comparison of voltage monitoring curves of a damaged cell and a normal cell according to one embodiment of the present invention;

FIG. 7 is a diagram illustrating a reminder message for a mobile terminal according to an embodiment of the invention;

fig. 8 is a block diagram illustrating a battery safety monitoring system of a terminal device according to an embodiment of the present invention;

fig. 9 is a block diagram of a terminal device according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

Before describing the battery safety monitoring method of the terminal device, the battery safety monitoring system of the terminal device and the terminal device with the battery safety monitoring system provided by the embodiment of the invention, a battery structure in the terminal device and potential safety hazards thereof are described.

For example, a lithium ion battery mainly comprises a cell and a battery protection system, wherein the cell is called a "heart" of the lithium ion battery and contains positive and negative electrode materials, an electrolyte, a separation film and a shell, and the battery protection system is arranged outside the cell. The positive electrode material of the battery core is a lithium molecule material such as lithium manganate and lithium cobaltate, which determines the energy of the battery, and the negative electrode material is graphite. The isolating membrane is arranged between the anode and the cathode of the battery, in popular terms, the isolating membrane is like paper and is continuously folded in a small battery box, anode and cathode materials and electrolyte are filled in the isolating membrane, when the battery is charged, an external electric field activates lithium molecules in the anode materials to the cathode and stores the lithium molecules in gaps of a graphite carbon structure, and the more the lithium molecules are driven, the larger the stored energy is; during discharging, the lithium ions in the negative electrode are driven to the positive electrode, and the lithium ions are changed into lithium molecules in the original positive electrode material, so that the cycle is repeated, and the charging and discharging of the battery are realized.

The isolating membrane is mainly used for completely isolating the positive electrode material and the negative electrode material of the battery core, and once the positive electrode material and the negative electrode material are in direct contact, the internal short circuit of the battery can occur, so that certain potential safety hazards are brought, and the isolating membrane cannot be too thin and is easily damaged. However, with the higher demands of the terminal devices from consumers, such as the requirement of the mobile terminal to be thin and thin, large screen and high endurance, manufacturers are looking for batteries with higher energy density. For example, the energy density of the battery is improved by filling more positive and negative electrode materials, but the more the positive and negative electrode materials are filled, the thinner and thinner the separator film, and the damage of the battery caused by external impact and the like is likely to cause the damage of the separator film, possibly causing short circuit.

As an example, when the battery is subjected to external mechanical damage such as crush damage, drop damage, puncture damage, the separator is very thin, which easily causes the separator to be damaged to cause short circuit between the positive electrode and the negative electrode, i.e. so-called short circuit occurs inside the battery, and the voltage of the battery is instantaneously reduced at the moment of short circuit, mainly because a local internal short circuit point is formed inside the battery, and the higher the damage degree of the battery is, the more serious the voltage is reduced. Meanwhile, the short circuit point is heated more seriously, which causes the temperature of the short circuit point to be significantly higher than that of other regions of the battery.

Generally, in case of particularly severe damage, the short circuit area inside the battery is large, and heat generation continues at the damaged point until the battery voltage is reduced to 0V, and if the battery voltage is high, the battery may even ignite and burn; slight damage, the short circuit area in the battery is small, short circuit current is formed at a short circuit point, the short circuit current is large, large heat is generated at the short circuit point, the temperature becomes high, the short circuit point can be fused, the voltage of the battery can be restored to an initial state, the battery can be normally used as a normal battery at the moment, the battery at the moment has potential safety hazards, and the internal short circuit can be triggered at any time in the later-stage use process, and the internal short circuit protection method can be specifically shown in fig. 1. When the battery is damaged by external machinery, most of the batteries are slightly damaged, so that the time for causing internal short circuit is short, the internal short circuit of the battery can be restored quickly, but the isolation film is damaged locally, so that the battery is difficult to monitor, and certain potential safety hazards can be brought to terminal equipment due to the abnormal battery.

As another example, during charging and discharging of the battery, lithium ions may be accumulated on the positive electrode and the negative electrode, when accumulation occurs, it may generate a dendrite as we see that many things generate crystals, the dendrite may slowly lengthen, during this process, short circuit may occur inside the battery due to puncturing the isolation film, and the situation that the battery returns to its original state after short circuit due to external mechanical damage occurs inside the battery as described in the above example is more obvious, that is, it is easier to cause short circuit again inside the battery.

In case the short circuit takes place, in the battery use, the inside a large amount of heats that will produce of electricity core, and this heat can make the inside electrolyte of electricity core produce the gasification, and when heat produced when too fast, the gasification process will be very fast, and the inside atmospheric pressure of electricity core will increase, and when atmospheric pressure reached the certain degree, the intensity of shell had not born, and the shell will burst, arouses the explosion, still can take place the battery when meetting open fire and catch fire.

In addition, the energy density is higher and higher, so that the isolating membrane is thinner and thinner, the isolating membrane is easy to damage, and further a safety accident is caused, and the quick charging is also one of the main reasons of potential safety hazards of the battery.

The fast charge is, as the name implies, a process of fast charging a secondary rechargeable battery. For example, the charging process of the battery may include one or more of a trickle charge phase, a constant current charge phase, and a constant voltage charge phase. During the trickle charge phase, a current feedback loop may be utilized such that the current into the battery during the trickle charge phase satisfies the expected charge current level of the battery (e.g., the first charge current), for example, when the voltage is below 3.0V, the battery is pre-charged with a charge current of 100 mA. In the constant current charging phase, a current feedback loop may be utilized to make the current entering the battery during the constant current charging phase satisfy the expected charging current (e.g., the second charging current, which may be larger than the first charging current) of the battery, for example, the charging current may vary from 0.1C to several C depending on the battery, where C refers to the battery capacity. Generally, the standard charging is performed at this stage with a charging current of 0.1C, and the fast charging is performed at this stage with a current greater than 0.1C to complete the charging in a short time. In the constant voltage charging stage, the voltage feedback loop can be utilized to make the voltage loaded to the two ends of the battery in the constant voltage charging stage meet the expected charging voltage of the battery, for example, when the voltage of the battery is equal to 4.2V, the constant voltage charging stage is entered, the charging voltage in this stage is constant at 4.2V, when the battery is gradually fully charged, the charging current is smaller and smaller, and when the charging current is less than 100mA, the battery can be judged to be fully charged.

In the constant-current charging stage, because the charging current is relatively large, if the charging current can be 0.2-0.8C, some can even reach 1C, and the charging process of the battery is an electrochemical reaction process and is accompanied with the generation of heat inevitably, and the larger the charging current is, the more the heat is generated in a short time, when the isolating membrane is damaged, the short circuit of the positive and negative electrodes is easily caused, once the short circuit occurs, the generated heat is more, the electrolyte is gasified, the internal air pressure of the battery core is increased, when the air pressure reaches a certain degree, the strength of the shell cannot bear, the shell can be cracked to cause explosion, and when open fire occurs, the battery can be ignited.

That is, once the internal short circuit occurs in the battery, it indicates that the battery is abnormal, and at this time, the battery has a certain potential safety hazard, and a safety accident may occur during the use process.

The inventor of the application finds that the voltage of the battery is relatively stable in a normal use state based on continuous research and experiments of the battery for many years, the temperature of each area on the surface of the battery is relatively balanced, but when the battery is damaged, short circuit can occur inside the battery, so that the voltage of the battery can be suddenly reduced, short-circuit current is formed at a short-circuit point, the short-circuit current is large, large heat is generated at the short-circuit point, the temperature is high, the temperature of the short-circuit point is obviously higher than the temperature of other areas of the battery, and the temperature of the area corresponding to the short-circuit point is abnormal. The inventor also verifies the voltage sudden change phenomenon and the temperature abnormal region through a large amount of experiments, so that from the test result, as long as the battery is damaged, the voltage sudden change signal appears, and the temperature abnormal region also exists.

Based on the discovery and a large number of experimental verifications, the application provides an effective safety monitoring method for the battery to determine whether the battery is damaged or not and to prevent the battery from having potential safety hazards and further prevent safety accidents.

A battery safety monitoring method of a terminal device, a battery safety monitoring system of a terminal device, and a terminal device according to embodiments of the present invention are described below with reference to the accompanying drawings.

It should be noted that "terminal equipment" as used in embodiments of the present invention may include, but is not limited to, devices configured to receive/transmit communication signals via a wireline connection (e.g., 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 (e.g., for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and/or another communication terminal). Terminals that are arranged to communicate over a wireless interface may be referred to as "wireless communication terminals", "wireless terminals", and/or "mobile terminals". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; a Personal Communications System (PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; 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.

Fig. 2 is a flowchart of a battery safety monitoring method of a terminal device according to an embodiment of the present invention. As shown in fig. 2, the battery safety monitoring method of the terminal device may include the steps of:

and S1, acquiring the battery voltage of the terminal equipment in real time, and acquiring the temperature of each area of the battery surface of the terminal equipment in real time, wherein the battery surface is divided into a plurality of areas.

According to an embodiment of the present invention, the temperature of each region of the surface of the battery can be detected using a thermal resistance or thermocouple temperature detection technique, which is easy to integrate and convenient to implement in a small or portable device.

Specifically, the surface of the battery can be divided into a plurality of areas, each area is provided with a temperature sensing probe, and the temperature of each area is detected in real time through the temperature sensing probes. That is, according to an embodiment of the present invention, the temperature of each region is acquired by the temperature sensing probe correspondingly disposed to each region.

In one embodiment of the present invention, as shown in fig. 3, the plurality of regions are arranged in an array, for example, 3 × 3 arrays of regions 1 to 9.

In another embodiment of the present invention, in order to reduce the complexity of the temperature detection scheme, the temperature sensing probe may be disposed only at the portions where the battery is easily damaged, such as the corner region, the head region and the tail region of the battery, as shown in fig. 4. That is, the plurality of regions may include a cell corner region, a header region, and a tail region.

And S2, judging whether the voltage of the battery of the terminal equipment generates a voltage sudden change phenomenon according to the battery voltage acquired in real time, and judging whether a temperature abnormal area exists on the surface of the battery according to the temperature of each area.

In one embodiment of the invention, the battery voltage can be detected in real time by building a differential amplification circuit. As an example, the differential amplifier circuit may be as shown in fig. 5, and may include resistors R1 and R2, a capacitor C1, and a differential amplifier X1, where one end of the resistor R2 is connected to the positive electrode of the battery, the other end of the resistor R2 is connected to the negative input terminal of the differential amplifier, the resistor R1 and the capacitor C1 form an RC voltage stabilizing filter circuit, one end of the resistor R1 is connected to the negative input terminal of the differential amplifier X1, the other end of the resistor R1 is grounded, the capacitor C1 is connected in parallel to the resistor R1, and the positive input terminal of the differential amplifier X1 is also connected to the positive electrode of the battery. The battery voltage can be monitored in real time through the differential amplification circuit, and whether the battery voltage changes suddenly or not is judged according to the output signal of the differential amplification circuit.

It can be understood that, the negative input terminal of the differential amplifier X1 is connected to ground through a capacitor C1, when the voltage of the battery suddenly changes, due to the existence of the capacitor, the voltage at the negative input terminal of the differential amplifier X1 will remain unchanged for a certain time, while the voltage at the positive input terminal of the differential amplifier X1 will directly jump, and the output of the differential amplifier X1 will turn over, so that it can be determined whether the voltage of the battery suddenly changes by monitoring the output signal of the differential amplifier X1.

It should be noted that, in other embodiments of the present invention, the battery voltage may also be detected in real time by using other voltage detection circuits, so as to implement real-time monitoring of the battery voltage. The circuit for detecting the voltage of the battery has various implementations, which are well known to those skilled in the art and will not be described in detail herein.

In one embodiment of the present invention, whether a temperature abnormal region exists on the surface of the battery may be determined by determining whether a temperature of a certain region is higher than temperatures of other regions among the temperatures of the plurality of regions, or may be determined by determining whether a temperature of a certain region is higher than a preset temperature threshold among the temperatures of the plurality of regions. For example, when it is detected that the temperature of a certain region is higher than the temperatures of other regions, it can be considered that the region is a temperature abnormal region, indicating that a temperature abnormal region exists on the surface of the battery.

The temperature of each area is compared, so that the interference of the external temperature on the detection result can be avoided, and the detection precision is improved.

And S3, if the voltage sudden change phenomenon occurs to the battery and the surface of the battery has a temperature abnormal area, judging that the battery is abnormal currently.

In the embodiment of the invention, through a large number of tests and experiments, the inventor finds that the voltage of the battery is relatively stable and the temperature of the surface of the battery is relatively balanced in the normal use process, but once the battery is subjected to external mechanical damage such as dropping, impacting, extruding, puncturing and the like, the voltage of the battery has a sudden change phenomenon and is accompanied with a local high temperature phenomenon. Therefore, the battery safety monitoring method of the terminal device in the embodiment of the present invention monitors whether the battery is currently damaged by monitoring whether the voltage of the battery has a voltage sudden change phenomenon and whether the surface of the battery has a temperature abnormal region, and once it is monitored that the voltage of the battery has the voltage sudden change phenomenon and the surface of the battery has the temperature abnormal region, it indicates that the battery is damaged at this time and an internal short circuit occurs, and it is determined that the battery is currently abnormal and a certain potential safety hazard exists.

According to one embodiment of the invention, when the battery is in a no-load condition or a light-load condition, if a voltage sudden change phenomenon occurs in the battery and a temperature abnormal region exists on the surface of the battery, it is determined that the battery is currently abnormal.

The battery is in an idle state, which means that the battery is not currently discharged and does not consume current, for example, the terminal device is in a shutdown state. The battery is in a light load condition, which means that the current consumption of the battery is about 5mA-6mA, and the current consumption of the battery is very small, for example, the terminal device is in a standby state or a system load is very small.

When the battery is in a no-load condition or a light-load condition, whether the voltage of the battery has a voltage sudden change phenomenon or not and whether the surface of the battery has a temperature abnormal region or not are monitored, so that the interference of voltage instantaneous drop and battery surface temperature rise caused by system load sudden change can be filtered, and the detection precision is improved.

In an embodiment of the present invention, determining whether a voltage sudden change phenomenon occurs in a battery of the terminal device according to a battery voltage obtained in real time includes: judging whether the battery has instantaneous voltage drop according to the battery voltage acquired in real time; and if the voltage of the battery drops instantly, judging that the voltage of the battery suddenly changes.

And when the reduction amplitude of the voltage of the battery in the preset time is greater than or equal to a preset value, judging that the voltage of the battery drops instantly.

Specifically, in one example of the present invention, when the battery is in an idle condition or a light load condition, the preset value is greater than or equal to 10mV, and may be, for example, 150 mV and 400 mV.

Specifically, voltage monitoring during battery damage is shown in fig. 6, according to one embodiment of the present invention. Wherein, curve 1 represents the voltage change curve when the battery is slightly damaged, curve 2 represents the voltage change curve when the battery is seriously damaged, and curve 3 represents the voltage change curve when the battery is normally not damaged. It can be known from the curve 1 that the battery voltage instantly jumps from 3.8V to 3.63V and then recovers to about 3.8V when the battery is slightly damaged, and from the curve 2, the battery voltage instantly jumps from 3.8V to 3.51V and then recovers to about 3.8V when the battery is severely damaged, and from the curve 3, the battery voltage basically remains constant at 3.8V when the battery normally does not receive damage, so that comparing the curve 1, the curve 2 and the curve 3, once the battery is subjected to external mechanical damage such as drop, impact, extrusion, puncture and the like, the battery voltage has a sudden change phenomenon, i.e. an instant drop, and the voltage drop amplitude is different according to different damage degrees.

Therefore, the battery safety monitoring method of the terminal equipment in the embodiment of the invention judges whether the battery is abnormal currently or not by detecting whether the battery voltage jumps suddenly or not and whether the temperature abnormal area exists on the surface of the battery or not, so that the battery can be monitored in real time when the battery is damaged, prompt and repair can be timely realized, potential safety hazards caused by battery abnormity are avoided, and the safety of the terminal equipment in use is greatly improved.

According to one embodiment of the invention, when the battery is abnormal currently, the abnormal battery is also marked, and the terminal equipment is controlled to send out the reminding information that the battery is abnormal when the terminal equipment is in the starting state.

For example, when it is detected that the battery is abnormal currently, a user needs to be reminded. As an example, as shown in fig. 7, the battery safety message may be transmitted by the reminder message "battery safety message: honored customers, the battery is in abnormal state because of damage, for your safe use, please go to the customer service network of \ |, thank you for detection and maintenance, xi |! "remind the user; as another example, when the user is reminded by the reminder information shown in fig. 7, the user may also be reminded by blinking an indicator light on the mobile terminal, for example, the indicator light is controlled to blink red light at a faster frequency; as still another example, the user may be reminded through a voice broadcast function in the terminal device.

Generally, when the user sees the reminding information, the user can timely go to the corresponding customer service network to perform detection and maintenance, but some users do not know the severity of the problem when seeing the message, so that the message is likely to be ignored and continuously used normally, and the user can be reminded for multiple times, for example, the user can be reminded for at least three times. And if the user does not process the information after reminding for many times, certain functions of the terminal equipment can be limited at the moment.

According to one embodiment of the invention, when the battery is abnormal currently, fault grading is further carried out according to the condition that the battery has sudden voltage change and the temperature information of the temperature abnormal region, and the corresponding functions of the terminal equipment are limited according to the fault grades.

That is, the fault grade division can be performed according to the voltage amplitude of the battery voltage instantaneous drop and the temperature information of the temperature abnormal region, for example, the larger the voltage amplitude of the battery voltage instantaneous drop is, the higher the temperature of the temperature abnormal region is, the more serious the battery is damaged, so that the battery can be divided into general damage, more serious damage, serious damage and battery failure according to the damage degree of the battery, the corresponding fault grade is general grade, more serious grade, serious grade and complete fault grade, and further, the corresponding function of the terminal device can be limited according to the fault grade.

For example, in a normal situation, the smaller the power consumption of the application program in the terminal device, when the battery is used, the smaller the heat generation amount, for example, only the chat tool is turned on and the video chat is not performed, the power consumption of the battery is small, the heat generation amount of the battery is small, and the danger possibility of the battery occurring is relatively small, and when the power consumption of the application program is relatively large, for example, the video watching, the game playing and the like, the power consumption of the battery is large, the heat generation amount of the battery is large, and a safety accident is easy to occur, so when the abnormality of the battery is judged, if the failure level is a general level, the use of the video software, the game software, the application program and the like with large power consumption is prohibited; if the fault grade is a more serious grade and a serious grade, the whole system is directly prohibited from starting to prevent safety accidents, and the display screen of the terminal equipment displays that potential safety hazards exist in the battery, the system is prohibited from starting, the customer service network points are requested to carry out detection and maintenance, and thank you for coordination! ", to alert the user; if the fault level is a complete fault level, the battery is invalid, the system is shut down and cannot be started.

In addition, because the battery also generates heat during charging, especially in a quick charging state, the heat generated in a short time is more, when the battery is judged to be abnormal, the battery is also prohibited from being rapidly charged, and in a serious case, a user is prohibited from charging the battery, so that safety accidents are prevented from happening, and a display screen of the terminal equipment displays that' the battery is prohibited from being charged due to damage, the battery is also prohibited from being detected and maintained by a customer service website, thank you for coordination! ", to alert the user.

In summary, according to the battery safety monitoring method of the terminal device in the embodiments of the present invention, the battery voltage of the terminal device and the temperature of each region on the surface of the battery are obtained in real time, then whether a voltage sudden change phenomenon occurs in the battery of the terminal device is determined according to the battery voltage obtained in real time, whether a temperature abnormal region exists on the surface of the battery is determined according to the temperature of each region, and finally, when the voltage sudden change phenomenon occurs in the battery and the temperature abnormal region exists on the surface of the battery, it is determined that the battery is currently abnormal, that is, when the battery is currently damaged, the battery voltage suddenly jumps, and meanwhile, a heating phenomenon occurs in a region where the battery is short-circuited due to the damage, the present invention determines whether the battery is currently abnormal by detecting whether the battery voltage suddenly jumps and whether the temperature abnormal region exists on the surface of the battery, thereby monitoring the battery can be performed in real time when the battery is damaged, the realization in time reminds and send and repair, avoids because of the potential safety hazard that the battery unusual brought, has improved the security when terminal equipment uses greatly.

In addition, an embodiment of the present invention further provides a non-transitory computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements the above-mentioned battery safety monitoring method.

According to the non-transitory computer readable storage medium of the embodiment of the invention, by executing the battery safety monitoring method, whether the battery is abnormal currently can be judged by monitoring whether the battery voltage jumps suddenly or not and whether the temperature abnormal area exists on the surface of the battery or not, so that the battery can be monitored in real time when damaged, prompt and repair delivery can be realized in time, potential safety hazards caused by abnormal battery are avoided, and the safety of terminal equipment in use is greatly improved.

Fig. 8 is a block diagram of a battery safety monitoring system of a terminal device according to an embodiment of the present invention. As shown in fig. 8, the battery safety monitoring system 100 of the terminal device includes: a first obtaining module 110, a second obtaining module 140, a judging module 120 and a security monitoring module 130.

The first obtaining module 110 is configured to obtain a battery voltage of the terminal device in real time; the second obtaining module 140 is configured to obtain the temperature of each region on the surface of the battery of the terminal device in real time, where the surface of the battery is divided into multiple regions; the judging module 130 is configured to judge whether a voltage mutation phenomenon occurs in the battery of the terminal device according to the battery voltage obtained in real time, and judge whether a temperature abnormal region exists on the surface of the battery according to the temperature of each region; the safety monitoring module 140 is configured to determine that the battery is abnormal when the battery has a voltage sudden change phenomenon and a temperature abnormal region exists on the surface of the battery.

According to an embodiment of the present invention, the temperature of each region of the surface of the battery can be detected using a thermal resistance or thermocouple temperature detection technique, which is easy to integrate and convenient to implement in a small or portable device.

Specifically, the surface of the battery can be divided into a plurality of areas, each area is provided with a temperature sensing probe, and the temperature of each area is detected in real time through the temperature sensing probes. That is, according to an embodiment of the present invention, the second acquiring module 140 acquires the temperature of each region through the temperature sensing probe correspondingly disposed in each region.

In one embodiment of the present invention, as shown in fig. 3, the plurality of regions are arranged in an array, for example, 3 × 3 arrays of regions 1 to 9.

In another embodiment of the present invention, in order to reduce the complexity of the temperature detection scheme, the temperature sensing probe may be disposed only at the portions where the battery is easily damaged, such as the corner region, the head region and the tail region of the battery, as shown in fig. 4. That is, the plurality of regions may include a cell corner region, a header region, and a tail region.

In the embodiment of the invention, the battery voltage can be detected in real time by building a differential amplification circuit. As an example, the differential amplifier circuit may be as shown in fig. 5, and may include resistors R1 and R2, a capacitor C1, and a differential amplifier X1, where one end of the resistor R2 is connected to the positive electrode of the battery, the other end of the resistor R2 is connected to the negative input terminal of the differential amplifier, the resistor R1 and the capacitor C1 form an RC voltage stabilizing filter circuit, one end of the resistor R1 is connected to the negative input terminal of the differential amplifier X1, the other end of the resistor R1 is grounded, the capacitor C1 is connected in parallel to the resistor R1, and the positive input terminal of the differential amplifier X1 is also connected to the positive electrode of the battery. The battery voltage can be monitored in real time through the differential amplification circuit, and whether the battery voltage changes suddenly or not is judged according to the output signal of the differential amplification circuit.

It can be understood that, the negative input terminal of the differential amplifier X1 is connected to ground through a capacitor C1, when the voltage of the battery suddenly changes, due to the existence of the capacitor, the voltage at the negative input terminal of the differential amplifier X1 will remain unchanged for a certain time, while the voltage at the positive input terminal of the differential amplifier X1 will directly jump, and the output of the differential amplifier X1 will turn over, so that it can be determined whether the voltage of the battery suddenly changes by monitoring the output signal of the differential amplifier X1.

It should be noted that, in other embodiments of the present invention, the battery voltage may also be detected in real time by using other voltage detection circuits, so as to implement real-time monitoring of the battery voltage. The circuit for detecting the voltage of the battery has various implementations, which are well known to those skilled in the art and will not be described in detail herein.

In an embodiment of the present invention, the determining module 130 may determine whether the temperature of the battery surface is abnormal by determining whether a certain region of the temperatures of the plurality of regions has a temperature higher than the temperatures of the other regions, or may determine whether the temperature of the certain region of the temperatures of the plurality of regions is higher than a preset temperature threshold. For example, when it is detected that the temperature of a certain region is higher than the temperatures of other regions, it can be considered that the region is a temperature abnormal region, indicating that a temperature abnormal region exists on the surface of the battery.

The temperature of each area is compared, so that the interference of the external temperature on the detection result can be avoided, and the detection precision is improved.

According to an embodiment of the present invention, when the battery is in an idle state or a light load state, if a voltage jump phenomenon occurs in the battery and a temperature abnormal region exists on the surface of the battery, the safety monitoring module 130 determines that the battery is currently abnormal.

The battery is in an idle state, which means that the battery is not currently discharged and does not consume current, for example, the terminal device is in a shutdown state. The battery is in a light load condition, which means that the current consumption of the battery is about 5mA-6mA, and the current consumption of the battery is very small, for example, the terminal device is in a standby state or a system load is very small.

When the battery is in a no-load condition or a light-load condition, whether the voltage of the battery has a voltage sudden change phenomenon or not and whether the surface of the battery has a temperature abnormal region or not are monitored, so that the interference of voltage instantaneous drop and battery surface temperature rise caused by system load sudden change can be filtered, and the detection precision is improved.

According to an embodiment of the present invention, the determining module 120 is further configured to determine whether the battery has a voltage transient drop according to the battery voltage obtained in real time; and if the voltage of the battery drops instantly, judging that the voltage of the battery suddenly changes.

When the voltage of the battery decreases by a predetermined amount within a predetermined time, the determining module 120 determines that the voltage of the battery drops instantaneously.

Specifically, in one example of the present invention, when the battery is in an idle condition or a light load condition, the preset value is greater than or equal to 10mV, and may be, for example, 150 mV and 400 mV.

Specifically, voltage monitoring during battery damage is shown in fig. 6, according to one embodiment of the present invention. Wherein, curve 1 represents the voltage change curve when the battery is slightly damaged, curve 2 represents the voltage change curve when the battery is seriously damaged, and curve 3 represents the voltage change curve when the battery is normally not damaged. It can be known from the curve 1 that the battery voltage instantly jumps from 3.8V to 3.63V and then recovers to about 3.8V when the battery is slightly damaged, and from the curve 2, the battery voltage instantly jumps from 3.8V to 3.51V and then recovers to about 3.8V when the battery is severely damaged, and from the curve 3, the battery voltage basically remains constant at 3.8V when the battery normally does not receive damage, so that comparing the curve 1, the curve 2 and the curve 3, once the battery is subjected to external mechanical damage such as drop, impact, extrusion, puncture and the like, the battery voltage has a sudden change phenomenon, i.e. an instant drop, and the voltage drop amplitude is different according to different damage degrees.

Therefore, the battery safety monitoring system of the terminal equipment in the embodiment of the invention judges whether the battery is abnormal currently or not by detecting whether the battery voltage jumps suddenly or not and whether the temperature abnormal area exists on the surface of the battery or not, so that the battery can be monitored in real time when the battery is damaged, prompt and repair can be timely realized, potential safety hazards caused by battery abnormity are avoided, and the safety of the terminal equipment in use is greatly improved.

According to an embodiment of the present invention, when the battery is abnormal currently, the security monitoring module 130 is further configured to mark the abnormal battery, and control the terminal device to send a notification message that the battery is abnormal when the terminal device is in a power-on state.

For example, when it is detected that the battery is abnormal currently, a user needs to be reminded. As an example, as shown in fig. 7, the battery safety message may be transmitted by the reminder message "battery safety message: honored customers, the battery is in abnormal state because of damage, for your safe use, please go to the customer service network of \ |, thank you for detection and maintenance, xi |! "remind the user; as another example, when the user is reminded by the reminder information shown in fig. 7, the user may also be reminded by blinking an indicator light on the mobile terminal, for example, the indicator light is controlled to blink red light at a faster frequency; as still another example, the user may be reminded through a voice broadcast function in the terminal device.

Generally, when the user sees the reminding information, the user can timely go to the corresponding customer service network to perform detection and maintenance, but some users do not know the severity of the problem when seeing the message, so that the message is likely to be ignored and continuously used normally, and the user can be reminded for multiple times, for example, the user can be reminded for at least three times. And if the user does not process the information after reminding for many times, certain functions of the terminal equipment can be limited at the moment.

According to an embodiment of the present invention, when the battery is currently abnormal, the safety monitoring module 130 further performs fault classification according to the sudden change of voltage of the battery and the temperature information of the abnormal temperature region, and limits the corresponding function of the terminal device according to the fault classification.

That is, the safety monitoring module 130 may classify the fault according to the voltage amplitude of the battery voltage instantaneous drop and the temperature information of the temperature abnormal region, for example, the larger the voltage amplitude of the battery voltage instantaneous drop is, the higher the temperature of the temperature abnormal region is, the more serious the battery is damaged, so as to classify the battery into general damage, more serious damage, and battery failure according to the damage degree of the battery, and the corresponding fault classes are general class, more serious class, and complete fault class, so as to limit the corresponding functions of the terminal device according to the fault classes.

For example, in a normal situation, the smaller the power consumption of the application program in the terminal device, when the battery is used, the smaller the heat generation amount, for example, only the chat tool is turned on and the video chat is not performed, at this time, the power consumption of the battery is small, the heat generation amount of the battery is small, and the danger possibility of the battery occurring is relatively small, and when the power consumption of the application program is relatively large, for example, the video watching, the game playing and the like, at this time, the power consumption of the battery is large, the heat generation amount of the battery is large, and a safety accident is easily generated, so when it is determined that the battery is abnormal, if the fault level is a general level, the safety monitoring module 130 prohibits the use of the video software, the game software, the application program and the like, which have large power consumption; if the fault level is a more serious level and a more serious level, the safety monitoring module 130 directly prohibits the whole system from starting at this time to prevent a safety accident, and displays that "there is a potential safety hazard in the battery, the system is prohibited from starting, please go to the customer service website for detection and maintenance, thank you for coordination! ", to alert the user; if the fault level is a complete fault level, the battery is invalid, the system is shut down and cannot be started.

In addition, since heat is generated during the charging process of the battery, especially, in the fast charging state, the amount of heat generated in a short time is more, when it is determined that the battery is abnormal, the safety monitoring module 130 prohibits the battery from being charged quickly, and in a serious case, prohibits the battery from being charged by the user, so as to prevent a safety accident from occurring, and displays on the display screen of the terminal device that "the battery is prohibited from being charged because the battery is damaged, please ask the customer service website of the company to perform detection and maintenance, thanks to the cooperation! ", to alert the user.

In an embodiment of the present invention, the safety monitoring module 130 may be a battery manager having a battery management function, a battery protection system having a battery protection function, or a terminal device control system integrating a battery management function, a protection function, and a terminal device control function, which is not specifically limited in this respect.

According to the battery safety monitoring system of the terminal equipment, the battery voltage of the terminal equipment is obtained in real time through the first obtaining module, the temperature of each area on the surface of the battery is obtained in real time through the second obtaining module, then the judging module judges whether the battery of the terminal equipment generates voltage mutation phenomenon or not according to the battery voltage obtained in real time, judges whether a temperature abnormal area exists on the surface of the battery or not according to the temperature of each area, and finally judges whether the battery is abnormal currently through the safety monitoring module when the battery generates the voltage mutation phenomenon and the temperature abnormal area exists on the surface of the battery, namely, when the battery is damaged currently, the battery voltage suddenly jumps and the heating phenomenon occurs in the area of the internal short circuit of the battery due to the damage, the battery safety monitoring system judges whether the battery is abnormal currently or not by detecting whether the battery voltage suddenly jumps or not and whether the temperature abnormal area exists on the surface of the battery or not, therefore, the battery can be monitored in real time when damaged, timely reminding and repair sending are realized, potential safety hazards caused by abnormal battery are avoided, and the safety of the terminal equipment in use is greatly improved.

In addition, as shown in fig. 9, an embodiment of the present invention further proposes a terminal device 10, which includes the battery safety monitoring system 100 of the terminal device.

According to the terminal equipment provided by the embodiment of the invention, through the battery safety monitoring system of the terminal equipment, whether the battery is abnormal currently can be judged by monitoring whether the voltage of the battery jumps suddenly or not and whether the temperature abnormal area exists on the surface of the battery or not, so that the battery can be monitored in real time when being damaged, prompt and repair can be timely realized, potential safety hazards caused by battery abnormity are avoided, and the use safety is greatly improved.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

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 at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, 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 integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (16)

1. A battery safety monitoring method of terminal equipment is characterized by comprising the following steps:

acquiring the battery voltage of the terminal equipment in real time, and acquiring the temperature of each area on the surface of the battery of the terminal equipment in real time, wherein the surface of the battery is divided into a plurality of areas, and the temperature of each area on the surface of the battery is detected by adopting a temperature detection technology of a thermal resistor or a thermocouple;

judging whether the battery of the terminal equipment generates a voltage mutation phenomenon according to the battery voltage acquired in real time, and judging whether a temperature abnormal area exists on the surface of the battery according to the temperature of each area;

if the battery has a voltage mutation phenomenon and a temperature abnormal region exists on the surface of the battery, judging that the battery is abnormal currently; judging whether a temperature abnormal region exists on the surface of the battery by judging whether the temperature of a certain region is higher than that of other regions in the temperatures of the plurality of regions; wherein the content of the first and second substances,

when the battery is in a no-load condition or a light-load condition, if the battery has a voltage mutation phenomenon and a temperature abnormal area exists on the surface of the battery, judging that the battery is abnormal currently;

when the battery is abnormal currently, fault grade division is carried out according to the condition that the battery has voltage mutation and the temperature information of the temperature abnormal area, and corresponding functions of the terminal equipment are limited according to the fault grade.

2. The method for monitoring the battery safety of the terminal device according to claim 1, wherein when the battery is currently abnormal, the abnormal battery is further marked, and when the terminal device is in a power-on state, the terminal device is controlled to send out a reminding message that the battery is abnormal.

3. The method for monitoring battery safety of terminal equipment according to claim 1, wherein the step of judging whether the battery of the terminal equipment has voltage mutation phenomenon according to the battery voltage obtained in real time comprises the following steps:

judging whether the battery has instantaneous voltage drop according to the battery voltage acquired in real time;

and if the voltage of the battery drops instantly, judging that the voltage of the battery suddenly changes.

4. The battery safety monitoring method of a terminal device according to claim 3, wherein it is determined that the battery has a momentary voltage drop when the voltage of the battery decreases by a predetermined amount of time or more.

5. The battery safety monitoring method of a terminal device according to claim 1, wherein the temperature of each region is obtained by a temperature sensing probe correspondingly provided to each region.

6. The battery safety monitoring method of a terminal device according to claim 1, wherein the plurality of areas are arranged in an array.

7. The battery safety monitoring method of a terminal device according to claim 1, wherein the plurality of regions include a battery corner region, a header region, and a tail region.

8. A non-transitory computer-readable storage medium having stored thereon a computer program, wherein the program, when executed by a processor, implements the battery safety monitoring method according to any one of claims 1 to 7.

9. A battery safety monitoring system of a terminal device, comprising:

the first acquisition module is used for acquiring the battery voltage of the terminal equipment in real time;

the second acquisition module is used for acquiring the temperature of each area on the surface of the battery of the terminal equipment in real time, wherein the surface of the battery is divided into a plurality of areas, and the temperature of each area on the surface of the battery is detected by adopting a temperature detection technology of a thermal resistor or a thermocouple;

the judging module is used for judging whether the voltage mutation phenomenon occurs to the battery of the terminal equipment according to the battery voltage acquired in real time and judging whether a temperature abnormal area exists on the surface of the battery according to the temperature of each area;

the safety monitoring module is used for judging that the battery is abnormal currently when the battery has a voltage mutation phenomenon and a temperature abnormal area exists on the surface of the battery;

judging whether a temperature abnormal region exists on the surface of the battery by judging whether the temperature of a certain region is higher than that of other regions in the temperatures of the plurality of regions; wherein the content of the first and second substances,

when the battery is in a no-load condition or a light-load condition, if the battery has a voltage mutation phenomenon and the surface of the battery has a temperature abnormal area, the safety monitoring module judges that the battery is abnormal currently;

when the battery is abnormal currently, the safety monitoring module is further used for dividing the fault grade according to the voltage mutation condition of the battery and the temperature information of the temperature abnormal region, and limiting the corresponding functions of the terminal equipment according to the fault grade.

10. The battery safety monitoring system of the terminal device according to claim 9, wherein when the battery is currently abnormal, the safety monitoring module is further configured to mark an abnormal battery and control the terminal device to send a notification message that the battery is abnormal when the terminal device is in a power-on state.

11. The battery safety monitoring system of a terminal device according to claim 9, wherein the determining module is further configured to,

judging whether the battery has instantaneous voltage drop according to the battery voltage acquired in real time;

and if the voltage of the battery drops instantly, judging that the voltage of the battery suddenly changes.

12. The battery safety monitoring system of a terminal device according to claim 11, wherein the determining module determines that the battery has a momentary voltage drop when the voltage of the battery decreases by a predetermined amount of time.

13. The battery safety monitoring system of the terminal device according to claim 9, wherein the second acquiring module acquires the temperature of each region through a temperature sensing probe correspondingly disposed in each region.

14. The battery safety monitoring system of a terminal device according to claim 9, wherein the plurality of areas are arranged in an array.

15. The battery safety monitoring system of a terminal device of claim 9, wherein the plurality of regions includes a battery corner region, a header region, and a tail region.

16. A terminal device characterized by a battery safety monitoring system comprising a terminal device according to any one of claims 9-15.