WO2021142598A1

WO2021142598A1 - Battery protection method, system, movable platform, battery, and storage medium

Info

Publication number: WO2021142598A1
Application number: PCT/CN2020/071861
Authority: WO
Inventors: 许柏皋; 林宋荣; 李鹏
Original assignee: 深圳市大疆创新科技有限公司
Priority date: 2020-01-13
Filing date: 2020-01-13
Publication date: 2021-07-22
Also published as: CN113287220A

Abstract

A battery protection method, a system, a movable platform, a battery, and a storage medium. The method comprises: obtaining the current battery temperature (S101); determining a battery protection policy corresponding to the current battery temperature according to the current battery temperature and a preset multi-level battery protection policy, wherein the preset multi-level battery protection policy corresponds to multiple levels of temperature ranges of a battery, and is used for controlling the battery to execute the battery protection policy corresponding to the current battery temperature to control the movement of a movable platform (S102); and controlling the battery to execute the battery protection policy corresponding to the current battery temperature to control the movement of the movable platform (S103).

Description

Battery protection method, system, movable platform, battery and storage medium

Technical field

This application relates to the field of battery technology, and in particular to a battery protection method, system, movable platform, battery and storage medium.

Background technique

Many mobile platforms (such as unmanned aerial vehicles) rely on battery power to be able to operate. Due to the large discharge current of the UAV battery, the battery temperature rises very quickly. The battery temperature often exceeds 80 degrees Celsius, and over-temperature use can cause great damage to the battery. In traditional technology, there is no control over the use of batteries over temperature. Over-temperature use of batteries, on the one hand, cannot guarantee the safety of battery use, on the other hand, it cannot guarantee the safety of operation of the mobile platform, which is prone to safety accidents.

Summary of the invention

Based on this, this application provides a battery protection method, system, removable platform, battery, and storage medium.

In the first aspect, the present application provides a battery protection method, the battery is used to supply power to a movable platform, and the method includes:

Get the current battery temperature;

According to the current battery temperature and a preset multi-level battery protection strategy, a battery protection strategy corresponding to the current battery temperature is determined, wherein the preset multi-level battery protection strategy corresponds to multiple levels of the battery temperature Corresponding to the range, it is used to control the battery to execute a battery protection strategy corresponding to the current battery temperature to control the operation of the movable platform;

Control the battery to execute the battery protection strategy corresponding to the current battery temperature to control the operation of the movable platform.

In a second aspect, the present application provides a battery protection method, the method includes:

Get the current battery temperature;

According to the current battery temperature and a preset multi-level battery protection strategy, a battery protection strategy corresponding to the current battery temperature is determined, wherein the preset multi-level battery protection strategy corresponds to multiple levels of the battery temperature Corresponding to the range, it is used to control the battery to execute a battery protection strategy corresponding to the current battery temperature, so as to realize the safe use of the battery;

The battery is controlled to execute the battery protection strategy corresponding to the current battery temperature, so as to realize the safe use of the battery.

In a third aspect, the present application provides a battery protection system, the system includes: a memory and a processor;

The memory is used to store a computer program;

The processor is used to execute the computer program and when executing the computer program, implement the following steps:

Get the current battery temperature;

In a fourth aspect, the present application provides a battery protection system, the system includes: a memory and a processor;

The memory is used to store a computer program;

Get the current battery temperature;

In a fifth aspect, the present application provides a movable platform including the battery protection system as described in the third aspect.

In a sixth aspect, the present application provides a battery including the battery protection system as described in the third aspect.

In a seventh aspect, the present application provides a battery including the battery protection system as described in the fourth aspect.

In an eighth aspect, the present application provides a computer-readable storage medium that stores a computer program, and when the computer program is executed by a processor, the processor realizes the method described in the first aspect Battery protection method.

In a ninth aspect, the present application provides a computer-readable storage medium that stores a computer program, and when the computer program is executed by a processor, the processor realizes the method described in the second aspect Battery protection method.

The embodiments of the application provide a battery protection method, system, removable platform, battery, and storage medium to obtain the current battery temperature; according to the current battery temperature and a preset multi-level battery protection strategy, determine the battery corresponding to the current battery temperature Protection strategy, where the preset multi-level battery protection strategy corresponds to the temperature range of multiple levels of the battery, and is used to control the battery to execute the battery protection strategy corresponding to the current battery temperature, so as to realize the safe use of the battery or to control the mobile The operation of the platform; control the battery to execute the battery protection strategy corresponding to the current battery temperature to realize the safe use of the battery or to control the operation of the movable platform. Since the preset multi-level battery protection strategy corresponding to the multiple-level temperature range of the battery is preset, the battery is controlled to execute the battery protection strategy corresponding to the current battery temperature to realize the safe use of the battery or to control the mobile platform In this way, on the one hand, the safe use of the battery can be achieved when the mobile platform is running, which not only extends the life of the battery, but also prevents the possibility of battery over-temperature use and fire, thereby avoiding battery safety accidents. On the one hand, the safe use of the battery is combined with the operation of the mobile platform. While ensuring the safe use of the battery, it can also provide support to ensure the safe operation of the mobile platform as much as possible, so as to avoid the occurrence of safety accidents on the mobile platform as much as possible. support.

It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and should not limit the application.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the following will briefly introduce the drawings used in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present application. Ordinary technicians can obtain other drawings based on these drawings without creative work.

Fig. 1a is a schematic block diagram of a charging system provided by an embodiment of the present application;

Fig. 1b is a schematic block diagram of a movable platform provided by another embodiment of the present application;

FIG. 2 is a schematic flowchart of an embodiment of a battery protection method according to the present application;

FIG. 3 is a schematic diagram of an application scenario of the battery protection method 1 of the present application;

4 is a schematic flowchart of another embodiment of the battery protection method of the present application;

5 is a schematic flowchart of another embodiment of the battery protection method of the present application;

FIG. 6 is a graph of the charging voltage when the battery is short-circuited in the battery protection method of the present application;

FIG. 7 is a graph of the charging voltage when the battery is not short-circuited in the battery protection method of the present application;

FIG. 8 is a schematic diagram of another application scenario of the battery protection method of the present application;

FIG. 9 is a schematic diagram of another application scenario of the battery protection method of the present application;

FIG. 10 is a schematic structural diagram of an embodiment of the battery protection system of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

The flowchart shown in the drawings is only an example, and does not necessarily include all contents and operations/steps, nor does it have to be executed in the described order. For example, some operations/steps can also be decomposed, combined or partially combined, so the actual execution order may be changed according to actual conditions.

Many existing mobile platforms (such as unmanned aerial vehicles) operate on battery power, and over-temperature use of batteries often occurs, and there is no control over over-temperature use of batteries. Over-temperature use of batteries, on the one hand, cannot guarantee the safety of battery use, on the other hand, it cannot guarantee the safety of operation of the mobile platform, which is prone to safety accidents. There may be many reasons for over-temperature use of the battery, for example, internal short circuit of the battery, poor heat dissipation of the battery, etc.

In an embodiment of the present application, the current battery temperature can be acquired; and the protection strategy can be executed according to the current battery temperature. For example, the protection strategy includes a preset multi-level battery protection strategy. According to the battery temperature, determine the battery protection strategy corresponding to the current battery temperature, and control the battery to execute the battery protection strategy corresponding to the current battery temperature, so as to realize the safe use of the battery or to control the operation of the mobile platform. Among them, the preset multi-level battery protection strategy corresponds to the temperature range of the battery at multiple levels, and is used to control the battery to execute the battery protection strategy corresponding to the current battery temperature to realize the safe use of the battery or to control the operation of the mobile platform . Since the preset multi-level battery protection strategy corresponding to the multiple-level temperature range of the battery is preset, the battery is controlled to execute the battery protection strategy corresponding to the current battery temperature to realize the safe use of the battery or to control the mobile platform In this way, on the one hand, the safe use of the battery can be achieved when the mobile platform is running, which not only extends the life of the battery, but also prevents the possibility of battery over-temperature use and fire, thereby avoiding battery safety accidents. On the one hand, the safe use of the battery is combined with the operation of the mobile platform. While ensuring the safe use of the battery, it can also provide support to ensure the safe operation of the mobile platform as much as possible, so as to avoid the occurrence of safety accidents on the mobile platform as much as possible. support.

In another embodiment of the present application, the battery parameters of the battery can be obtained; whether the battery has a short circuit is determined according to the battery parameters; and when the battery has a short circuit, a protection strategy can be determined. For example, the protection strategy includes a battery protection strategy corresponding to the occurrence of a short circuit in the battery. If the battery is short-circuited, control the battery to execute the battery protection strategy. Wherein, the battery parameter may include at least one of constant voltage charging time, constant voltage charging capacity, charge-discharge capacity ratio, and battery temperature. Furthermore, the protection of the battery is realized when the battery is short-circuited. In this way, the over-temperature of the battery can be avoided to a certain extent, thereby improving the safety of battery use.

In another embodiment of the present application, battery parameters of the battery, such as battery temperature, can be obtained. If the battery temperature exceeds a predetermined temperature threshold, the battery can display an alarm message. For example, it can be displayed in the form of voice, vibration, light, text display, etc., so as to intuitively inform the user. Alternatively, the parameter information of the battery is sent to the control module of the movable platform, for example, the flight control module of an unmanned aerial vehicle, so that the control module can perform corresponding alarm operations based on the battery parameter information.

Hereinafter, some embodiments of the present application will be described in detail with reference to the accompanying drawings. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

Please refer to FIG. 1. FIG. 1a is a schematic block diagram of a charging system according to an embodiment of the present application. The charging system 100 may include a smart battery 10 and a charger 20. The charger 20 is used to connect an external power source to charge the smart battery 10, and the smart battery 10 is used to power electronic devices, for example, to power a movable platform and a load carried on the movable platform.

Fig. 1b is a schematic block diagram of a movable platform provided by another embodiment of the present application. The movable platform 200 may include a smart battery 10 and a body 30. The body 30 is used to connect an external power source to charge the smart battery 10, and the smart battery 10 is used to power a movable platform and a load carried on the movable platform.

The smart battery 10 may include a battery management system (Battery Management System, BMS). The battery management system includes a Microcontroller Unit (MCU) and a discharging resistor. The discharging resistor is connected to the battery through a discharging circuit for the Discharge the battery under control.

Among them, the micro-control unit is used to obtain the battery parameters of the battery and process the battery parameters, such as charging current, charging voltage, charging time, discharging current, discharging current, discharging time, battery temperature, constant voltage charging time, constant voltage The ratio of charge capacity to charge-discharge capacity and so on.

The battery management system can be used to estimate the State of Charge (SOC), that is, the remaining battery power, to ensure that the SOC is maintained within a reasonable range, and to prevent damage to the battery due to overcharge or overdischarge.

During the battery charging and discharging process, the battery management system can also collect the battery voltage, temperature, and charging and discharging current in real time to prevent the battery from being overcharged or overdischarged.

Among them, movable platforms include aircraft, robots, electric vehicles or autonomous unmanned vehicles.

For example, the smart battery 10 supplies power to the motor of the aircraft to control the rotation of the propeller of the motor, so as to realize the flight of the aircraft; for another example, the smart battery 10 powers the camera camera on board the aircraft for aerial photography and so on.

Among them, the aircraft includes drones, which include rotary-wing drones, such as four-rotor drones, hexa-rotor drones, and octo-rotor drones. It can also be a fixed-wing drone or It is a combination of rotary-wing and fixed-wing drones, and is not limited here.

Among them, the robots include educational robots, which use a Mecanum wheel omnidirectional chassis, and are equipped with multiple pieces of intelligent armor. Each intelligent armor has a built-in impact detection module that can quickly detect physical strikes. At the same time, it also includes a two-axis pan/tilt, which can be flexibly rotated, matched with the transmitter to accurately, stably and continuously fire crystal bombs or infrared beams, and matched with ballistic light effects, giving users a more realistic shooting experience.

It can be seen that the importance of the battery to the mobile platform, if the battery is abnormal, it will affect the safety of the mobile platform.

Hereinafter, some embodiments of the present application will be described in detail with reference to the accompanying drawings. In the case of no conflict, the following embodiments and the features in the embodiments can be combined with each other

Referring to Figure 2, Figure 2 is a schematic flow chart of an embodiment of the battery protection method of the present application. The battery is used to supply power to a movable platform. The movable platform in this embodiment refers to various types that can move automatically or move under controlled conditions. A variety of platforms, such as: unmanned aerial vehicles, vehicles, unmanned vehicles, ground robots, etc. The battery is not limited to lithium batteries, but can also be all batteries with multi-level battery protection, lithium-ion batteries with intelligent management, and so on. For example, electric car batteries, electric bicycle batteries and so on. This embodiment achieves the purpose of controlling the temperature of the battery by combining the safe use of the battery with the operation of the movable platform. It should be noted that the execution subject of this embodiment may be a battery, or a movable platform, and specifically may be other modules of the movable platform, which is not limited here. To facilitate the distinction, the method in this embodiment that combines the safe use of the battery with the operation of the movable platform is referred to as the first battery protection method. The method includes: step S101, step S102, and step S103.

Step S101: Obtain the current battery temperature.

The current battery temperature is measured by a temperature sensor. The battery is equipped with a temperature sensor, and the current battery temperature is determined according to the temperature collected by the temperature sensor. For example, the current battery temperature is the temperature collected by the temperature sensor. Get the temperature collected by the temperature sensor to get the current battery temperature. If the execution subject of this embodiment is a movable platform, the temperature sensor can be used to send the collected temperature to other modules of the movable platform.

The current battery temperature includes the surface temperature of the battery and/or the internal temperature of the battery. The battery surface temperature may refer to the temperature of the battery surface measured by a temperature sensor provided on the battery surface. The internal temperature of the battery may refer to the internal temperature of the battery measured by a temperature sensor probe packaged inside the battery (the package is completed during the preparation of the battery). There is a certain gap between the battery surface temperature and the battery internal temperature; when the battery does not have the conditions to measure the internal temperature of the battery, the battery surface temperature can be used as the current battery temperature; when the battery has the conditions to measure the internal temperature of the battery, the internal temperature of the battery can be As the current battery temperature, or measure the battery surface temperature and the battery internal temperature at the same time, use the battery surface temperature and the battery internal temperature as the current battery temperature.

Step S102: Determine the battery protection strategy corresponding to the current battery temperature according to the current battery temperature and the preset multi-level battery protection strategy, where the preset multi-level battery protection strategy corresponds to the temperature range of the multiple levels of the battery. To control the battery to execute the battery protection strategy corresponding to the current battery temperature to control the operation of the mobile platform.

The preset multi-level battery protection strategy refers to a pre-set, multiple-level strategy for protecting battery safety. The preset multi-level battery protection strategy corresponds to the temperature range of multiple levels of the battery, and is used to control the battery to execute a battery protection strategy corresponding to the current battery temperature to control the operation of the movable platform.

Among them, a preset-level battery protection strategy can include one strategy or more than two strategies; a preset-level battery protection strategy can include battery-related (that is, battery-related) strategies, and can also include mobile platform-related strategies. Related (that is, mobile platform) strategies can also include user-related (that is, user-related) strategies.

In an embodiment, the preset multi-level battery protection strategy includes at least one of the following: controlling the battery to continue normal operation, reducing the discharge current of the battery, issuing an instruction for instructing the mobile platform to prepare to return to home before stopping operation, and telling the user Issue a reminder that the battery is over-temperature recommended to return home, issue a command to control the mobile platform to warn the user to return home, issue a serious warning to the user that the battery temperature is recommended to return to home as soon as possible, record the current discharge temperature of the battery, lock the battery, and determine whether the battery has occurred Short circuit, display alarm information.

In an application, the battery temperature range of multiple levels includes at least one of the following: below the normal use temperature threshold, between the normal use temperature threshold and the restricted use temperature threshold, between the restricted use temperature threshold and the first life-influencing temperature threshold, The second influence is above the lifetime temperature threshold.

In one application, the normal use temperature threshold includes 65°C. The restricted use temperature threshold includes 75°C. The first influence lifetime temperature threshold includes 85°C. The second lifetime temperature threshold includes 90°C.

In one application, the abnormal battery temperature may be caused by a short circuit of the battery. The corresponding battery protection scheme can be determined by determining whether the battery is short-circuited. The method to determine whether the battery has a short circuit can be:

You can determine whether the battery is short-circuited by judging whether the battery parameters are abnormal. For example, it is determined whether the battery parameter is abnormal by comparing with the standard parameter, and the standard parameter is the parameter when the battery is normal.

Exemplarily, determining whether the battery has a short circuit according to the battery parameters is specifically: obtaining the standard parameters of the battery; determining whether the battery has a short circuit according to the difference between the battery parameters and the standard parameters.

For example, to determine whether the difference between the battery parameters and the standard parameters is within the preset range; if the difference between the battery parameters and the standard parameters is within the preset range, it is determined that the battery does not have a short circuit; if the difference between the battery parameters and the standard parameters is If the difference is not within the preset range, it is determined that the battery is short-circuited. The preset range can accurately determine whether the battery is short-circuited.

Among them, the preset range is set according to the type of battery. Different types of batteries have different preset ranges. Different types of batteries include different battery capacities or different battery cell materials, such as lithium ion batteries and lead storage batteries.

For another example, determine whether the battery parameter is greater than the standard parameter; if the battery parameter is greater than the standard parameter, it is determined that the battery has a short circuit; if the battery parameter is less than or equal to the standard parameter, it is determined that the battery does not have a short circuit. This can quickly determine whether the battery has a short circuit.

In some embodiments, if the battery parameter is the constant voltage charging time, the standard parameter is the standard constant voltage charging time. Determine whether the battery is short-circuited, specifically: determine whether the constant voltage charging time is greater than the standard constant voltage charging time; if the constant voltage charging time is greater than the standard constant voltage charging time, determine whether the battery is short-circuited; if the constant voltage charging time is less than or equal to the standard constant voltage Charging time, make sure the battery is not short-circuited.

Because battery charging generally includes a constant current charging stage and a constant voltage charging stage, for batteries of the same type and with a fixed capacity, the charging time in the constant voltage charging stage is basically the same, which can be based on the constant voltage charging time of the constant voltage charging stage To determine whether the battery is short-circuited.

For example, lithium batteries are charged with constant current and constant voltage, and the time for constant voltage charging is generally 20-30 minutes. When the battery is short-circuited, the time for constant voltage charging of the battery will be greatly extended. It may be 40-50 minutes, or it may be a couple of hours. Therefore, it is possible to determine whether the battery is short-circuited by detecting the charging time of the constant voltage charging stage of the battery.

In some embodiments, if the battery parameter is the constant voltage charging capacity, the standard parameter is the standard constant voltage charging capacity. Determine whether the battery is short-circuited, specifically: determine whether the constant voltage charging capacity is greater than the standard constant voltage charging capacity; if the constant voltage charging capacity is greater than the standard constant voltage charging capacity, confirm that the battery is short-circuited; if the constant voltage charging capacity is less than or equal to the standard constant voltage Charging capacity, make sure that the battery is not short-circuited.

In the normal state, the constant voltage charging capacity of the battery is fixed. If there is a short circuit, the battery will have a leakage phenomenon, which will cause the constant voltage charging capacity of the battery to be larger, even far greater than the constant voltage charging of the battery in the normal state. capacitance. Therefore, the constant voltage charging capacity can be used to quickly and accurately determine whether the battery has a short circuit, such as a micro short circuit.

Exemplarily, if the battery parameter is the charge-discharge capacity ratio, the standard parameter is the standard charge-discharge capacity ratio. Determine whether the battery is short-circuited, specifically: determine whether the charge-discharge capacity ratio is greater than the standard charge-discharge capacity ratio; if the charge-discharge capacity ratio is greater than the standard charge-discharge capacity ratio, determine whether the battery is short-circuited; if the charge-discharge capacity ratio is less than or equal to the standard charge-discharge capacity ratio Discharge capacity ratio, it is determined that the battery does not have a short circuit.

In the normal state, the charge-discharge capacity ratio of the battery is generally in a fixed range, while the charge-discharge capacity ratio of the short-circuited battery is larger. Therefore, it can be determined whether the battery is short-circuited according to the change of the charge-discharge capacity ratio.

For example, for lithium-ion batteries, the charge-discharge capacity ratio will fluctuate in the range of 1.01-1.05 under normal conditions, while for lithium-ion batteries with micro-short circuits, the charge-discharge capacity ratio will be much greater than 1, which is based on the charge-discharge capacity ratio. Change to determine whether the battery is short-circuited. For example, when the charge-discharge capacity ratio is greater than 1.1, it can be determined that the battery has a micro short circuit.

In some embodiments, in order to accurately determine whether the battery is short-circuited, the corresponding charging voltage and charging time can also be obtained when the battery is being charged. The charging voltage and charging time are used to indicate the battery parameters of the battery to determine whether the battery is short-circuited. .

Correspondingly, to determine whether the battery is short-circuited, it can be determined whether the battery is short-circuited according to the corresponding charging voltage and charging time when the battery is charging.

Since the change trend of the charging voltage with the charging time when the battery is short-circuited is different from the change trend of the charging voltage with the charging time in the normal state, it can be determined whether the battery is short-circuited according to the charging voltage and the charging time.

In some embodiments, the battery temperature rises to a certain threshold, which is often caused by a battery short circuit. The battery temperature can be detected. When the battery temperature rises to a certain threshold range, it is determined that the battery may have a short circuit.

If it is determined that the battery is short-circuited, the corresponding short-circuit protection strategy can be carried out later. For example: if the battery is short-circuited, determine the battery short-circuit protection strategy corresponding to the battery short-circuit.

Specifically, the battery short-circuit protection strategy corresponding to the short-circuit of the battery is a preset battery short-circuit protection strategy, and the battery protection strategy is a strategic way of protecting the battery when the battery is short-circuited.

Wherein, the battery short-circuit protection strategy includes at least one of the following: discharging the battery to a preset voltage range corresponding to the safe storage of the battery, and controlling the battery to be in a locked state.

Of course, the battery short-circuit protection strategy can also include other strategies. For example, outputting prompt information to prompt the battery for processing according to the prompt information, the prompt information may be voice prompt information, text prompt information, indicator prompt information, etc.

In some embodiments, the battery short-circuit protection strategy includes a multi-level battery short-circuit protection strategy. In the multi-level battery short-circuit protection strategy, each level of the battery short-circuit protection strategy has different protection methods, and each level of the battery short-circuit protection strategy corresponds to the degree of short circuit. It is also different, in order to determine the corresponding protection strategy according to the degree of short-circuit of the battery, and then effectively and reasonably protect the battery.

Exemplarily, the multi-level battery short-circuit protection strategy includes at least one of the following: a first-level battery short-circuit protection strategy, a second-level battery short-circuit protection strategy, and a third-level short-circuit battery protection strategy.

Among them, the first-level short-circuit battery protection strategy includes: outputting prompt information for prompting the user to return for repair and maintenance.

Wherein, the second-level battery short-circuit protection strategy includes: controlling the battery to enter a self-discharge program to discharge the battery, and/or outputting prompt information for prompting the user that the battery is unusable.

Wherein, the third-level battery short-circuit protection strategy includes: controlling the battery to be in a locked state, and/or outputting prompt information for prompting the user that the battery has been scrapped.

Specifically, the degree of short circuit corresponding to the short circuit of the battery can be determined first; and then the multi-level battery protection strategy corresponding to the short circuit can be determined according to the degree of short circuit.

For example, the degree of short circuit includes the degree of short circuit a, the degree of short circuit b, and the degree of short circuit c, which correspond to the first-level battery short-circuit protection strategy, the second-level battery short-circuit protection strategy, and the third-level battery short-circuit protection strategy, respectively.

Wherein, determining the degree of short circuit of the short circuit specifically includes: determining the degree of difference between battery parameters and standard parameters, and determining the degree of short circuit according to the degree of difference.

Exemplarily, the constant voltage charging time of the battery exceeds the standard constant voltage charging time by 10 minutes, which is defined as the degree of short circuit a; the constant voltage charging time of the battery exceeds the standard constant voltage charging time by 20 minutes, and is defined as the short circuit degree b; The charging time exceeds the standard constant voltage charging time for 30 minutes, which is defined as the degree of short circuit c.

For example, if the constant voltage charging time of the battery is 45 minutes, and the standard constant voltage charging time is 20 minutes, the short circuit degree of the battery can be determined as the short circuit degree b. Therefore, the multi-level battery protection strategy corresponding to the short circuit of the battery is determined to be the second level Battery short-circuit protection strategy. The foregoing preset multi-level battery protection strategy and the foregoing multiple levels of battery temperature ranges may be respectively corresponding to the foregoing preset multi-level battery protection strategies and the foregoing multiple levels of battery temperature ranges according to specific practical applications. Since different short-circuit levels of the battery may result in different temperature ranges of the battery, the above-mentioned multi-level battery short-circuit protection strategy can also be corresponded to the above-mentioned multiple-level battery temperature ranges respectively.

Step S103: Control the battery to execute a battery protection strategy corresponding to the current battery temperature to control the operation of the movable platform.

According to the current battery temperature, the battery protection strategy corresponding to the current battery temperature is determined, and the battery can be controlled to execute the battery protection strategy corresponding to the current battery temperature to control the operation of the movable platform.

The embodiment of the application obtains the current battery temperature; according to the current battery temperature and the preset multi-level battery protection strategy, the battery protection strategy corresponding to the current battery temperature is determined, and the battery is controlled to execute the battery protection strategy corresponding to the current battery temperature to control Operation of mobile platforms. Among them, the preset multi-level battery protection strategy corresponds to the temperature range of the battery at multiple levels, and is used to control the battery to execute a battery protection strategy corresponding to the current battery temperature to control the operation of the movable platform. Since the preset multi-level battery protection strategy corresponding to the multiple-level temperature range of the battery is preset, the battery is controlled to execute the battery protection strategy corresponding to the current battery temperature to control the operation of the movable platform. In this way, On the one hand, the safe use of the battery can be realized when the mobile platform is running, which not only extends the life of the battery, but also prevents the possibility of battery over-temperature use and fire, so as to avoid battery safety accidents. Combined with the operation of the movable platform, it can provide support to ensure the safe operation of the movable platform as much as possible while ensuring the safe use of the battery, so as to provide support for avoiding the occurrence of safety accidents of the movable platform as much as possible. In addition, it is possible to obtain battery parameters of the battery; determine whether the battery has a short circuit according to the battery parameters; when the battery has a short circuit, determine the battery protection strategy corresponding to the battery short circuit; control the battery Execute the battery protection strategy. Wherein, the battery parameter may include at least one of constant voltage charging time, constant voltage charging capacity, charge-discharge capacity ratio, and battery temperature. Furthermore, the protection of the battery is realized when the battery is short-circuited. In this way, the over-temperature of the battery can be avoided to a certain extent, thereby improving the safety of the battery.

The detailed content of step S103 will be specifically described below according to the battery temperature range of multiple levels.

In one embodiment, if the current battery temperature is below the normal use temperature threshold, step S103 may include: if the current battery temperature is below the normal use temperature threshold (for example, below 65° C.), controlling the battery to continue normal operation. At this time, the movable platform is operating normally.

In another embodiment, if the current battery temperature is between the normal use temperature threshold and the restricted use temperature threshold (for example: 65-75°C), step S103 may include: if the current battery temperature is between the normal use temperature threshold and the restricted use temperature Between the thresholds, the discharge current of the battery is reduced to limit the operation of the movable platform.

The calculation formula for battery temperature rise is Q=I*I*R*T, reducing the discharge current of the battery, the heat generation of the battery will rapidly decrease. In this embodiment, the operation of the movable platform is restricted, on the one hand, it can ensure the basic operation of the movable platform, on the other hand, it can avoid or reduce the operation that requires a large current, so as to avoid the battery temperature rise and reduce the battery temperature. .

Restrictions on the operation of movable platforms include, but are not limited to: shutting down operations that require large currents, shutting down unnecessary operations at present, controlling the uniform movement of the movable platform, restricting the uniform movement speed of the movable platform, restricting the movement of the movable platform at a variable speed, and restricting the movement of the movable platform at a constant speed. The range of mobile platform movement, etc.

In another embodiment, when the movable platform includes an unmanned aerial vehicle, if the current battery temperature is between the normal use temperature threshold and the restricted use temperature threshold, step S103 may include: if the current battery temperature is between the normal use temperature threshold and the restricted use temperature threshold Between the temperature thresholds, the discharge current of the battery is reduced to control the restricted flight of the movable platform.

Specifically, the above step S103 may further include: if the current battery temperature is between the normal use temperature threshold and the restricted use temperature threshold, reducing the discharge current of the battery to limit the flight attitude of the unmanned aerial vehicle.

The flight attitude of the unmanned aerial vehicle includes vertical movement, pitch movement, rollover movement, yaw movement, forward and backward movement, and lateral movement. Under normal circumstances, these flight attitudes of unmanned aerial vehicles require relatively large currents to limit the flight attitudes of unmanned aerial vehicles in order to prevent the battery temperature from rising and lowering the battery temperature. For example: limiting the frequency of these flight attitudes, limiting the inclination of unmanned aerial vehicles (the greater the inclination of unmanned aerial vehicles, the greater the current required, and the smaller the current required to maintain a few degrees of inclination in flight), and restricting the roll of unmanned aerial vehicles Movement, restriction of UAV pitching movement, etc.

And/or, the above step S103 may further include: if the current battery temperature is between the normal use temperature threshold and the restricted use temperature threshold, reducing the discharge current of the battery to limit the unmanned aerial vehicle's variable speed flight.

When the unmanned aerial vehicle is flying at variable speeds, a relatively large current is required to limit the unmanned aerial vehicle's variable speed flight in order to prevent the battery temperature from rising and lowering the battery temperature. For example: limit the frequency of unmanned aerial vehicle's variable-speed flight, if the unmanned aerial vehicle's variable-speed flight limit the magnitude of acceleration (to avoid the rapid change of flight speed in a short period of time causing excessive current), maintain the unmanned aerial vehicle to fly at a constant speed, reduce the flight speed, etc. .

And/or, the above step S103 may further include: if the current battery temperature is between the normal use temperature threshold and the restricted use temperature threshold, reducing the discharge current of the battery to limit the flying height of the unmanned aerial vehicle.

The higher the unmanned aerial vehicle flies, the greater the gravity that needs to be overcome, the more energy it needs to consume, and the greater the current it needs. Limiting the flying altitude of unmanned aerial vehicles can prevent the battery temperature from rising and lowering the battery temperature.

For example, as shown in Figure 3, the flying height of the unmanned aerial vehicle is lowered from H1 to H2, and the flying speed of the unmanned aerial vehicle is reduced from V1 to V2, and the speed V1 is greater than V2, thereby ensuring the flight safety of the unmanned aerial vehicle .

In another embodiment, if the current battery temperature is between the limited use temperature threshold and the first life-influencing temperature threshold (for example, 75-85°C), step S103 may include: if the current battery temperature is between the limited use temperature threshold and the first Between the temperature thresholds that affect the life span, an instruction to instruct the movable platform to prepare for returning to home is issued to control the movable platform to prepare for returning to home.

Specifically, if the current battery temperature is between the limited use temperature threshold and the first life-influencing temperature threshold, an instruction for instructing the movable platform to make preparations for returning to home is issued, so as to control the movable platform to make preparations for returning to home, and to inform the user A reminder is issued that the battery is over-temperature and it is recommended to return home.

In the embodiment, if the current battery temperature is between the limited use temperature threshold and the first life-influencing temperature threshold, such as 75-85°C, long-term use of the battery at this time may cause significant damage to the battery life. Instruct the movable platform to make preparations for returning to home, so as to control the movable platform to make preparations for returning to home. Furthermore, the user can also be reminded to return home when the battery is over-temperature used at the same time, so that the user can determine whether to cancel the flight mission according to the urgent needs of the flight mission.

In another embodiment, if the current battery temperature is above the second life-influencing temperature threshold (for example, above 90° C.), step S103 may include: if the current battery temperature is above the second life-influencing temperature threshold, issuing a control movable platform The instruction to warn the user to return home to control the movable platform to warn the user to return home.

Specifically, if the current battery temperature is above the second life-influencing temperature threshold, an instruction is issued to control the UAV to issue a serious battery temperature warning to the user, suggesting to return as soon as possible, so as to control the UAV to issue a severe battery temperature warning to the user and suggest to return as soon as possible Tips.

When the battery temperature reaches a certain temperature range, such as above 90°C, using the battery at this time may cause fatal damage to the battery life. At this time, you can issue a command to control the movable platform to warn the user to return to home, so as to control the movable platform to warn The user returns home. Furthermore, the user is prompted that your battery temperature has been severely warned, and it is recommended to return home as soon as possible, that is, to control the UAV to issue a severe battery temperature warning to the user, and to return as soon as possible, so as to control the UAV to issue a severe battery temperature warning to the user. Prompt to return home, so that the user can confirm whether to cancel the flight mission according to the urgent needs of the flight mission.

Wherein, the method further includes: if the current battery temperature is above the second life-influencing temperature threshold, recording the current discharge temperature of the battery. In order to keep and subsequently query the usage records whose battery temperature is above the second life-influencing temperature threshold.

Further, the method further includes: if the mobile platform stops running and the current temperature of the battery is above the second life-influencing temperature threshold, locking the battery to prohibit the battery from supplying power to the mobile platform, and/or prohibit the battery from being charged . In one application, battery lockout refers to turning off the MOS on the main loop, the UAV can no longer take off, but the battery status information can be read. The current temperature of the battery is above the second impact life temperature threshold. At this time, the battery life is fatally damaged and the danger is extremely high. Therefore, the battery is locked to prohibit the battery from supplying power to the movable platform (to ensure the safety of the movable platform ), and/or prohibit the battery from being charged (to ensure the safety of the battery).

Further, the method further includes: if the battery is locked, controlling the battery to discharge to a safe storage voltage for storage. High battery storage is more dangerous. If the battery is locked and the battery is not used up, use the battery's self-discharge resistor to slowly discharge the battery and discharge to a safe storage voltage (low battery) for storage. In this way, the safety of the battery can be guaranteed.

Through the above method, it is possible to cultivate the user's safe use of the battery behavior. It should be noted that the above-mentioned execution body for locking the battery is the battery.

In some embodiments, on the basis of any of the foregoing embodiments, the foregoing step S103 may also control the battery to implement a battery short-circuit protection strategy after it is determined that the battery is short-circuited.

Specifically, the battery is discharged through a discharge resistor preset in the battery management system, and discharged to a preset voltage range; and/or, the charging switch and the discharging switch of the battery are controlled to be in an off state, so that the battery is in a locked state , That is, permanent failure.

Among them, the preset voltage range is a safe voltage range, and a range value near 0V can be set, and the specific range value is not limited here.

In some embodiments, of course, other battery protection strategies can also be adopted, such as outputting a prompt message to prompt the user that the battery is short-circuited. The prompt information includes voice prompt information, text prompt information, and/or indicator prompt information. For example, the indicator prompt information uses different LEDs to form a light language to prompt the user that the battery is short-circuited.

It is understandable that when the battery is in the charging state, it is detected that the battery is short-circuited and the charging is stopped before executing the battery protection strategy; when the battery is in the discharging state, when the safety of the mobile platform using the battery is ensured, all the steps are executed. Describe the battery protection strategy.

Exemplarily, if it is determined that the battery is short-circuited during the battery charging process, stop charging the battery, and execute the battery protection strategy. Wherein, to stop charging the battery, the micro-control unit can send a control signal to the charging switch circuit to turn off the charging switch circuit; of course, the micro-control unit can also send a control signal to the charger to stop the charger from charging.

For example, according to the constant voltage charging time, or the charging voltage and the corresponding charging time, determine that the smart battery is short-circuited, stop continuing to charge the battery, and discharge the battery to a preset voltage range, or control the battery to be in a locked state . This prevents the short-circuited battery from being used by the user, thereby improving the safety of the battery.

Exemplarily, the drone is equipped with a smart battery. During the flight of the drone, the micro-control unit of the smart battery determines that the battery is short-circuited according to the battery parameters. For example, it is determined that the battery is short-circuited according to the charge-discharge capacity ratio. The control unit sends instructions to the flight controller of the drone to instruct the drone to return home. After receiving the instruction, the flight controller controls the aircraft to return home and feeds it back to the micro-control unit of the smart battery. After receiving the feedback information, the micro control unit executes the battery protection strategy.

Of course, the micro-control unit of the smart battery sends an instruction to the drone's flight controller to instruct the drone to return home, and the flight controller sends the instruction to the ground control terminal, and the user knows that the battery is short-circuited and sends the return instruction To the flight controller, the flight controller starts to return home after receiving the return instruction from the ground control terminal.

Specifically, the battery can be discharged to a preset voltage range when the drone returns to home or when the return home is completed, and the battery is controlled to be in a locked state when the drone stops running, thereby improving the safety of the battery and Ensure the flight safety of drones.

It is understandable that if the battery protection strategy also includes a multi-level battery protection strategy, the battery can also be controlled to execute a determined multi-level battery protection strategy.

For example, if the multi-level battery protection strategy corresponding to the determined battery short circuit is the second-level battery protection strategy, the battery can be controlled to enter the self-discharge program to discharge the battery, and/or output a prompt message to remind the user that the battery is unavailable .

In some embodiments, after controlling the battery to execute the battery protection strategy, the battery control method further includes: when detecting that the battery is connected to the movable platform, outputting an alarm message to prompt the user that the battery is short-circuited. Not only can the safety of the battery be ensured, but also the operational safety of the movable platform can be improved.

In the battery protection method provided by the foregoing embodiments, since the preset multi-level battery protection strategy corresponding to the temperature range of the multiple levels of the battery is preset, the battery is controlled to execute the battery protection strategy corresponding to the current battery temperature to realize the battery In this way, on the one hand, the safe use of the battery can be achieved when the mobile platform is running, which can not only extend the life of the battery, but also prevent the possibility of battery over-temperature use. Therefore, it is possible to avoid battery safety accidents. On the other hand, the safe use of the battery is combined with the operation of the mobile platform. While ensuring the safe use of the battery, it can also provide support for ensuring the safe operation of the mobile platform as much as possible. To provide support to avoid safety accidents on mobile platforms as much as possible. In addition, the embodiments of the present application can also realize the protection of the battery when the battery is short-circuited. In this way, the over-temperature of the battery can be avoided to a certain extent, thereby improving the safety of battery use.

Refer to FIG. 4, which is a schematic flowchart of another embodiment of the battery protection method of the present application. The method of this embodiment is basically the same as the method of FIG. 2, except that this embodiment only describes the battery (related to the battery). Preset multi-level battery protection strategies and battery protection strategies that control the execution of the battery. For the content of the same part of the method of this embodiment and the method of FIG. 2, please refer to the method of FIG. 2 and related content described above, which will not be repeated here. In order to facilitate the distinction, the method in this embodiment that only relates to the battery (related to the battery) is called the second battery protection method.

The method includes: step S201, step S202, and step S203.

Step S201: Obtain the current battery temperature.

Step S202: Determine the battery protection strategy corresponding to the current battery temperature according to the current battery temperature and the preset multi-level battery protection strategy, where the preset multi-level battery protection strategy corresponds to the temperature range of the battery at multiple levels, and To control the battery to implement the battery protection strategy corresponding to the current battery temperature to realize the safe use of the battery.

Step S203: Control the battery to execute a battery protection strategy corresponding to the current battery temperature, so as to realize the safe use of the battery.

The embodiment of the application obtains the current battery temperature; according to the current battery temperature and the preset multi-level battery protection strategy, the battery protection strategy corresponding to the current battery temperature is determined, wherein the preset multi-level battery protection strategy is related to the multiple levels of the battery. Corresponding to the temperature range, it is used to control the battery to execute a battery protection strategy corresponding to the current battery temperature to achieve the safe use of the battery; to control the battery to execute a battery protection strategy corresponding to the current battery temperature to achieve the safe use of the battery. Since the preset multi-level battery protection strategy corresponding to the multiple-level temperature range of the battery is preset, the battery is controlled to execute the battery protection strategy corresponding to the current battery temperature to realize the safe use of the battery. In this way, The safe use of the battery is realized, and the occurrence of battery safety accidents can be avoided. In addition, it provides support for combining the safe use of batteries with the operation of mobile platforms. The preset multi-level battery protection strategy includes at least one of the following: controlling the battery to continue normal operation, reducing the discharge current of the battery, recording the current discharge temperature of the battery, locking the battery, and displaying alarm information.

Among them, the battery temperature range of multiple levels includes at least one of the following: below the normal use temperature threshold, between the normal use temperature threshold and the restricted use temperature threshold, between the restricted use temperature threshold and the first impact life temperature threshold, and the second impact Life temperature threshold above.

Wherein, controlling the battery to execute a battery protection strategy corresponding to the current battery temperature includes: if the current battery temperature is below the normal use temperature threshold, controlling the battery to continue normal operation.

Wherein, controlling the battery to implement a battery protection strategy corresponding to the current battery temperature includes: if the current battery temperature is between a normal use temperature threshold and a restricted use temperature threshold, reducing the discharge current of the battery.

Wherein, the method further includes: if the current battery temperature is above the second life-influencing temperature threshold, recording the current discharge temperature of the battery.

Wherein, the method further includes: if the mobile platform stops running and the current temperature of the battery is above the second life-influencing temperature threshold, locking the battery to prohibit external discharge of the battery and/or prohibit the battery from being charged.

Wherein, the method further includes: if the battery is locked, controlling the battery to discharge to a safe storage voltage for storage.

Among them, the normal use temperature threshold includes 65°C. The restricted use temperature threshold includes 75°C. The first influence lifetime temperature threshold includes 85°C. The second lifetime temperature threshold includes 90°C.

Wherein, the battery is provided with a temperature sensor to obtain the current battery temperature, including: obtaining the temperature collected by the temperature sensor, and determining the current battery temperature according to the temperature collected by the temperature sensor.

Wherein, the current battery temperature includes the surface temperature of the battery and/or the internal temperature of the battery.

In addition, when the battery is in use, some internal short circuits often occur, such as a micro short circuit, which can cause safety accidents such as battery failure and fire. Therefore, in one embodiment, the preset multi-level battery protection strategy also includes the protection strategy when the battery is short-circuited. First, it is necessary to determine that the battery is short-circuited, and then adopt the corresponding protection strategy to effectively protect the battery, thereby improving the battery Safety of use.

Specifically, referring to FIG. 5, the process includes: step S301, step S302, step S303, and step S304.

Step S301: Obtain battery parameters of the battery.

Wherein, the battery parameters include at least one of constant voltage charging time, constant voltage charging capacity, and charge-discharge capacity ratio.

Specifically, the battery parameters collected through the battery circuit can be obtained. For example, when the battery is charged, it enters the constant voltage charging phase, and the constant voltage charging time is obtained by acquiring the time of the constant voltage charging phase.

Specifically, the calculated battery parameters can also be obtained, for example, the charge and discharge capacity of the battery, that is, the charge capacity and the discharge capacity, can be calculated by the ampere-hour integral calculation, and then the charge and discharge capacity ratio can be calculated according to the charge capacity and the discharge capacity.

Step S302: Determine whether the battery is short-circuited according to the battery parameter.

In some embodiments, if the battery parameter is the constant voltage charging capacity, the standard parameter is the standard constant voltage charging capacity. Determine whether the battery is short-circuited, specifically: determine whether the constant voltage charging capacity is greater than the standard constant voltage charging capacity; if the constant voltage charging capacity is greater than the standard constant voltage charging capacity, confirm that the battery is short-circuited; if the constant voltage charging capacity is less than or equal to the standard constant voltage Charging capacity, make sure the battery is not short-circuited.

As shown in Fig. 6, Fig. 6 is a graph showing the change trend of the charging voltage of a battery with a short circuit with the charging time; as shown in Fig. 7, Fig. 7 is a graph showing the change of the charging voltage of the battery under a normal state with the charging time. Therefore, it can be determined whether the battery is short-circuited according to the change trend graph corresponding to the charging voltage and the charging time.

It can be seen from Figure 6 and Figure 7 that the difference is more obvious in the constant voltage charging stage, in order to quickly and accurately determine whether the battery is short-circuited. The obtained charging voltage includes at least a constant voltage charging voltage; accordingly, the charging time includes at least a constant voltage charging time.

It should be noted that the constant voltage charging voltage and the constant voltage charging time are the charging voltage and the charging time when the battery enters the constant voltage charging stage.

Step S303: If the battery is short-circuited, determine a battery protection strategy corresponding to the battery's short-circuit.

The battery protection strategy corresponding to the short-circuit of the battery is a preset battery protection strategy, and the battery protection strategy is a strategy for protecting the battery when the battery is short-circuited.

The battery protection strategy includes at least one of the following: discharging the battery to a preset voltage range corresponding to the safe storage of the battery, and controlling the battery to be in a locked state.

Of course, the battery protection strategy can also include other strategies. For example, outputting prompt information to prompt the battery for processing according to the prompt information, the prompt information may be voice prompt information, text prompt information, indicator prompt information, etc.

In some embodiments, the battery protection strategy includes a multi-level battery protection strategy. In the multi-level battery protection strategy, the protection mode of each level of the battery protection strategy is different, and the degree of short circuit corresponding to each level of the battery protection strategy is also different. The degree of short-circuit of the battery determines the corresponding protection strategy, and then the battery is effectively and reasonably protected.

Exemplarily, the multi-level battery protection strategy includes at least one of the following: a first-level battery protection strategy, a second-level battery protection strategy, and a third-level battery protection strategy.

Among them, the first-level battery protection strategy includes: outputting prompt information for prompting the user to return for repair and maintenance.

Wherein, the second-level battery protection strategy includes: controlling the battery to enter a self-discharge procedure to discharge the battery, and/or outputting a prompt message for prompting the user that the battery is unusable.

Wherein, the third-level battery protection strategy includes: controlling the battery to be in a locked state, and/or outputting prompt information for prompting the user that the battery has been scrapped.

For example, the degree of short circuit includes the degree of short circuit a, the degree of short circuit b, and the degree of short circuit c, respectively corresponding to the first-level battery protection strategy, the second-level battery protection strategy, and the third-level battery protection strategy.

For example, if the constant voltage charging time of the battery is 45 minutes, and the standard constant voltage charging time is 20 minutes, the short circuit degree of the battery can be determined as the short circuit degree b. Therefore, the multi-level battery protection strategy corresponding to the short circuit of the battery is determined to be the second level Battery protection strategy.

Step S304: Control the battery to execute the battery protection strategy.

Exemplarily, as shown in FIG. 8, if it is determined that the battery is short-circuited during the battery charging process, stop charging the battery, and execute the battery protection strategy. Wherein, to stop charging the battery, the micro-control unit can send a control signal to the charging switch circuit to turn off the charging switch circuit; of course, the micro-control unit can also send a control signal to the charger to stop the charger from charging.

Exemplarily, as shown in Figure 9, the unmanned aerial vehicle is equipped with a battery. During the flight of the unmanned aerial vehicle, the micro-control unit of the battery determines that the battery is short-circuited according to the battery parameters, such as determining that the battery is short-circuited according to the ratio of charge and discharge capacity. The micro-control unit of the battery sends instructions to the flight controller of the unmanned aerial vehicle to instruct the unmanned aerial vehicle to return home. After the flight controller receives the instruction, it controls the UAV to return home and feeds it back to the micro-control unit of the battery. After receiving the feedback information, the micro control unit executes the battery protection strategy.

Of course, the micro-control unit of the battery sends an instruction to the UAV's flight controller to instruct the drone to return home, and the flight controller sends the instruction to the ground control terminal. The user knows that the battery is short-circuited and sends the return instruction to Flight controller, the flight controller starts to return home after receiving the return-to-home instruction from the ground control terminal.

Specifically, the battery can be discharged to a preset voltage range when the unmanned aerial vehicle returns to home or at the end of the return home, and the battery can be controlled to be in a locked state when the unmanned aerial vehicle stops operating, thereby improving the safety of the battery. And to ensure the flight safety of the unmanned aerial vehicle.

Since the battery is installed in the movable platform, it provides power for the movable platform. However, due to the variety of usage scenarios, the movable platform may fall, hit and other accidents. Correspondingly, the battery may also fall, hit, etc. Once the battery is dropped, hit, etc., it will often be squeezed, short-circuited or needled (such as when the battery is installed in a movable device and is strongly squeezed due to the drop or impact of the movable device), which will cause the internal diaphragm to rupture As a result, the positive and negative electrodes of the battery are short-circuited, and a large amount of heat is generated inside the battery in a short time. Due to the limitation of the battery structure, this heat cannot quickly diffuse to the outside of the battery, causing the battery temperature to be too high, thereby triggering the decomposition of the active material and the electrolyte. Combustion leads to thermal runaway, and the battery temperature rises explosively, causing combustion or explosion. Once this type of battery continues to be used, it will bring great safety hazards to users who use the battery, threatening personal and property safety, and once a burning or explosion problem occurs, the battery has burned out, making it difficult to investigate and analyze.

For this kind of problem, the traditional way to deal with this kind of problem is usually to judge whether the battery has been dropped or hit by visual inspection of the battery, or by reminding the battery shell problem or manual to advise the user not to drop the battery or make the battery hit. Do not use batteries that have been dropped or impacted, as this method cannot eliminate potential safety hazards.

It can be seen that accidents such as falling and impact of the movable platform are one of the reasons for the short circuit of the battery. Therefore, the battery protection method provided in this embodiment can protect the battery after it is determined that the battery is short-circuited, and the battery needs to be short-circuited. Protect the battery before.

Specifically, before acquiring the battery parameters of the battery and determining whether the battery has a short circuit according to the battery parameters, the acceleration value of the battery is acquired; according to the acquired acceleration value, it is determined whether the battery has fallen or impacted; if it is determined that the battery has fallen or impacted, then The battery implements a safety strategy, and the safety strategy includes at least one of the following: recording abnormal information, performing abnormal prompts, limiting the charging and discharging of the battery, and controlling the self-discharge of the battery.

Wherein, the battery includes a micro control unit, and the acceleration value of the battery is obtained by the micro control unit. Specifically, the acceleration value of the battery can be detected by a sensing circuit provided in the battery and sent to the micro control unit; or the acceleration value of the movable platform can be obtained by the micro control unit as the acceleration value of the battery. It should be noted that the battery is a smart battery, and the following will take the smart battery as an example for introduction.

By obtaining the acceleration value of the smart battery, and determining whether the smart battery has fallen or hit, it can detect whether the smart battery has a safety hazard in real time and reliably, and implement a safety strategy for the smart battery when it is determined that the smart battery has a safety hazard. It can improve the safety of battery use and reduce the occurrence of safety accidents.

The obtained acceleration value is at least the acceleration value in the direction of gravity, which can be used for the acceleration value in the direction of gravity to determine whether the smart battery falls. When the movable platform is dropped or impacted, the smart battery carried by it also falls/impacts accordingly, and then it is determined that the movable platform has fallen/impacted. This can be used as a basis for judging the liability problem caused by the mobile platform bomber, which is helpful to determine whether the bomber is caused by the drop/impact of the movable platform, or the bomber caused by the abnormal output power of the battery itself, or it can be Battery short circuit caused by mobile platform bomber, etc.

Specifically, it is determined whether the acceleration value of the smart battery in the direction of gravity continuously exceeds a predetermined threshold within a predetermined time, and if so, it is determined that the smart battery has fallen.

In addition, it can also be determined whether the change value of the acceleration value of the smart battery in any direction within a preset time exceeds a preset threshold, and if so, it is determined that the smart battery has an impact.

The abnormal information may include information related to the impact event (such as impact time, etc.). In this way, if a safety accident occurs in the future, the cause of the battery safety accident can be traced based on the abnormal information.

In some embodiments, when it is determined that the smart battery has an impact, a safety policy is executed on the smart battery, and the safety policy may include an abnormal prompt. For example, audible and/or visual safety prompts are issued when it is determined that the smart battery has impacted to remind the user.

Correspondingly, the smart battery may also include an audible and/or visual device (such as a speaker and/or a display) to present audible and/or visual safety prompts to the user.

In some embodiments, when it is determined that the smart battery has an impact, a safety policy is executed on the smart battery, and the safety policy may include restricting the charging and discharging use of the smart battery.

Exemplarily, restricting the charging and discharging use of the smart battery may include at least one of the following: limiting the number of charging and discharging of the smart battery, limiting the time for each charging and discharging of the smart battery, and prohibiting charging and discharging of the smart battery. It can fundamentally improve the safety of battery use and reduce the occurrence of safety accidents.

In some embodiments, when it is determined that the smart battery has an impact, a safety policy is executed on the smart battery, and the safety policy may include controlling the self-discharge of the smart battery.

Exemplarily, controlling the self-discharge of the smart battery may send out at least one of the following prompts: strengthen maintenance, keep clean, and keep dry. In this embodiment, the smart battery may also include an audible and/or visual device (such as a speaker and/or a display) to present the prompt to the user.

Of course, in addition to whether there is an impact or a drop, the smart battery can also record other information during use, such as discharge current, battery temperature, etc., so that after identifying the battery short circuit, the cause of the short circuit can be analyzed and located, and the cause of the short circuit can be determined. For example, it is caused by impact or falling of the movable platform, or caused by internal reasons of the battery.

The battery protection method provided in the above embodiment can not only identify the short circuit of the battery according to the battery parameters of the battery, but also further determine the degree of short circuit according to the battery parameters, and then determine the corresponding battery protection strategy according to the degree of short circuit and the multi-level battery protection strategy. This realizes multi-level protection of the battery. In addition, the corresponding safety strategy can be implemented when the battery may be short-circuited. In turn, more effective protection of the battery is realized, and the safety performance of the battery is improved.

Refer to Figure 10, which is a schematic structural diagram of an embodiment of the battery protection system of the present application. It should be noted that the system can be arranged in a battery or a movable platform, so the execution body of the system can be a battery. It can also be a mobile platform. The system of this embodiment can execute the steps in the first battery protection method above. For detailed descriptions of related content, please refer to the relevant content section of the first battery protection method above, and will not be repeated here. Narrate. To facilitate distinction, the battery protection system in this embodiment that executes the steps in the first battery protection method described above is referred to as the first battery protection system.

The battery protection system 300 includes: a memory 1 and a processor 2; the processor 2 is electrically connected to the memory 1, a battery, and a movable platform.

Among them, the processor 2 may be a micro control unit, a central processing unit, or a digital signal processor, and so on.

Among them, the memory 1 can be a Flash chip, a read-only memory, a magnetic disk, an optical disk, a U disk or a mobile hard disk, etc.

The memory 1 is used for storing computer programs; used for storing preset multi-level battery protection strategies.

The processor 2 is used to execute a computer program and, when executing the computer program, implement the following steps:

Get the current battery temperature; determine the battery protection strategy corresponding to the current battery temperature according to the current battery temperature and the preset multi-level battery protection strategy, where the preset multi-level battery protection strategy corresponds to the temperature range of the battery at multiple levels , Used to control the battery to execute the battery protection strategy corresponding to the current battery temperature to control the operation of the mobile platform; to control the battery to execute the battery protection strategy corresponding to the current battery temperature to control the operation of the mobile platform.

Among them, the preset multi-level battery protection strategy includes at least one of the following: controlling the battery to continue normal operation, reducing the discharge current of the battery, issuing an instruction for instructing the mobile platform to prepare for return to home before stopping operation, and issuing an over-temperature battery to the user Use prompts suggesting to return home, issue instructions to control the mobile platform to warn the user to return home, issue instructions to the user that the battery temperature is serious and suggest returning home as soon as possible, record the current battery discharge temperature, lock the battery, and display alarm messages.

Wherein, when the processor executes the computer program, the following steps are implemented: if the current battery temperature is below the normal use temperature threshold, the battery is controlled to continue normal operation.

Wherein, when the processor executes the computer program, the following steps are implemented: if the current battery temperature is between the normal use temperature threshold and the restricted use temperature threshold, the discharge current of the battery is reduced to limit the operation of the movable platform.

Among them, the movable platform includes an unmanned aerial vehicle; when the processor executes the computer program, the following steps are implemented: if the current battery temperature is between the normal use temperature threshold and the restricted use temperature threshold, the battery discharge current is reduced to control the movable Platform restricted flight.

When the processor executes the computer program, it implements the following steps: if the current battery temperature is between the normal use temperature threshold and the restricted use temperature threshold, the battery discharge current is reduced to limit the flight attitude of the UAV.

When the processor executes the computer program, the following steps are implemented: if the current battery temperature is between the normal use temperature threshold and the restricted use temperature threshold, the battery discharge current is reduced to limit the unmanned aerial vehicle's variable speed flight.

When the processor executes the computer program, the following steps are implemented: if the current battery temperature is between the normal use temperature threshold and the restricted use temperature threshold, the discharge current of the battery is reduced to limit the flying height of the unmanned aerial vehicle.

Wherein, when the processor executes the computer program, it implements the following steps: if the current battery temperature is between the limited use temperature threshold and the first life-influencing temperature threshold, it sends an instruction for instructing the movable platform to prepare to return to home to control the The mobile platform prepares to return home.

Among them, when the processor executes the computer program, the following steps are implemented: if the current battery temperature is between the limited use temperature threshold and the first life-influencing temperature threshold, it issues an instruction for instructing the movable platform to make preparations for returning home to control The mobile platform makes preparations for returning home, and sends the user a reminder that the battery is over-temperature recommended to return home.

Wherein, when the processor executes the computer program, the following steps are implemented: if the current battery temperature is above the second life-influencing temperature threshold, it sends an instruction to control the movable platform to warn the user to return home, so as to control the movable platform to warn the user to return home.

Among them, when the processor executes the computer program, the following steps are implemented: if the current battery temperature is above the second life-influencing temperature threshold, it will issue an instruction to control the UAV to issue a serious battery temperature warning to the user and suggest returning home as soon as possible to control the unmanned The aircraft warns the user that the battery temperature is serious and recommends returning home as soon as possible.

Wherein, when the processor executes the computer program, the following steps are implemented: if the current battery temperature is above the second life-influencing temperature threshold, the current discharge temperature of the battery is recorded.

Wherein, when the processor executes the computer program, the following steps are implemented: if the mobile platform stops running and the current temperature of the battery is above the second life-influencing temperature threshold, the battery is locked to prohibit the battery from supplying power to the mobile platform. And/or prohibit the battery from getting recharged.

Among them, when the processor executes the computer program, the following steps are implemented: if the battery is locked, the battery is controlled to discharge to a safe storage voltage for storage.

Among them, the battery is provided with a temperature sensor, and when the processor executes the computer program, the following steps are implemented: acquiring the temperature collected by the temperature sensor, and determining the current battery temperature according to the temperature collected by the temperature sensor.

This application also provides another battery protection system. It should be noted that the system of this embodiment is arranged in a battery, and its executive body is the battery. The system of this embodiment can perform the above-mentioned battery protection (related to the battery). For detailed description of the steps in the method and related content, please refer to the related content section of the battery protection method in the battery aspect (battery-related), which will not be repeated here. To facilitate distinction, the battery protection system in this embodiment that executes the steps in the second battery protection method described above is referred to as the second battery protection system.

The system includes: a memory and a processor; the processor is electrically connected with the memory and a battery.

The memory is used to store computer programs; used to store preset multi-level battery protection strategies.

The processor is used to execute the computer program and when executing the computer program, the following steps are implemented:

Get the current battery temperature; determine the battery protection strategy corresponding to the current battery temperature according to the current battery temperature and the preset multi-level battery protection strategy, where the preset multi-level battery protection strategy corresponds to the temperature range of the battery at multiple levels , Used to control the battery to execute the battery protection strategy corresponding to the current battery temperature to realize the safe use of the battery; to control the battery to execute the battery protection strategy corresponding to the current battery temperature to realize the safe use of the battery.

The preset multi-level battery protection strategy includes at least one of the following: controlling the battery to continue normal operation, reducing the discharge current of the battery, recording the current discharge temperature of the battery, locking the battery, and displaying alarm information.

Wherein, when the processor executes the computer program, the following steps are implemented: if the current battery temperature is between the normal use temperature threshold and the restricted use temperature threshold, the discharge current of the battery is reduced.

When the processor executes the computer program, the following steps are implemented: if the mobile platform stops running and the current temperature of the battery is above the second life-influencing temperature threshold, the battery is locked to prohibit external discharge of the battery and/or prohibit the battery Get charged.

The application also provides a movable platform, which includes the first battery protection system as described above. That is, in this embodiment, the first battery protection system (excluding the system capable of locking the battery in the first battery protection system) as in any of the above items is arranged in a movable platform. For a detailed description of the relevant content, please refer to the relevant content section above, which will not be repeated here.

The present application also provides a battery, which includes the first battery protection system as described above. That is, in this embodiment, the first battery protection system as in any of the above items is arranged in the battery. For a detailed description of the relevant content, please refer to the relevant content section above, which will not be repeated here.

This application also provides another battery, which includes the second battery protection system as described above. That is, in this embodiment, the second type of battery protection system as described above is arranged in the battery. For a detailed description of the relevant content, please refer to the relevant content section above, which will not be repeated here.

The present application also provides a computer-readable storage medium, which stores a computer program, and when the computer program is executed by a processor, the processor implements the first battery protection method as described above. That is, the battery protection method in this embodiment is a battery protection method that combines the safe use of the battery with the operation of the movable platform. For a detailed description of the relevant content, please refer to the relevant content section above, which will not be repeated here.

Wherein, the computer-readable storage medium may be the above-mentioned first battery protection system or a removable platform including the above-mentioned first battery protection system or an internal storage unit of the battery, such as a hard disk or a memory. The computer-readable storage medium may also be an external storage device, such as an equipped plug-in hard disk, a smart memory card, a secure digital card, a flash memory card, and so on.

The present application also provides another computer-readable storage medium. The computer-readable storage medium stores a computer program. When the computer program is executed by the processor, the processor implements the second battery protection method as described above. That is, the battery protection method in this embodiment is a battery protection method (related to the battery). For a detailed description of the relevant content, please refer to the relevant content section above, which will not be repeated here.

The computer-readable storage medium may be the foregoing second battery protection system or an internal storage unit of the battery including the foregoing second battery protection system, such as a hard disk or a memory. The computer-readable storage medium may also be an external storage device, such as an equipped plug-in hard disk, a smart memory card, a secure digital card, a flash memory card, and so on.

It should be understood that the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit the application.

It should also be understood that the term "and/or" used in the specification and appended claims of this application refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

The above are only specific embodiments of this application, but the scope of protection of this application is not limited to this. Any person skilled in the art can easily think of various equivalents within the technical scope disclosed in this application. Modifications or replacements, these modifications or replacements shall be covered within the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

A battery protection method, characterized in that the battery is used to supply power to a movable platform, and the method includes:

Get the current battery temperature;

According to the current battery temperature and a preset multi-level battery protection strategy, a battery protection strategy corresponding to the current battery temperature is determined, wherein the preset multi-level battery protection strategy corresponds to multiple levels of the battery temperature Corresponding to the range, it is used to control the battery to execute a battery protection strategy corresponding to the current battery temperature to control the operation of the movable platform;

Control the battery to execute the battery protection strategy corresponding to the current battery temperature to control the operation of the movable platform.
The method according to claim 1, wherein the preset multi-level battery protection strategy includes at least one of the following:

Control the battery to continue normal operation, reduce the discharge current of the battery, issue instructions for instructing the mobile platform to prepare for return to home before stopping operation, issue a reminder to the user that the battery is over-temperature recommended to return to home, and issue control options The mobile platform warns the user of an instruction to return home, issues a serious warning of battery temperature and recommends an instruction to return home as soon as possible, records the current discharge temperature of the battery, locks the battery, and displays alarm information.
The method according to claim 1, wherein the battery temperature ranges of the multiple levels include at least one of the following: below the normal use temperature threshold, between the normal use temperature threshold and the restricted use temperature threshold, the restricted use temperature threshold Between the first influencing lifetime temperature threshold, and the second influencing lifetime temperature threshold above.
The method according to claim 2, wherein the controlling the battery to execute a battery protection strategy corresponding to the current battery temperature comprises:

If the current battery temperature is below the normal use temperature threshold, control the battery to continue normal operation.
The method according to claim 2, wherein the controlling the battery to execute a battery protection strategy corresponding to the current battery temperature comprises:

If the current battery temperature is between the normal use temperature threshold and the restricted use temperature threshold, the discharge current of the battery is reduced to restrict the operation of the movable platform.
The method of claim 2, wherein the movable platform comprises an unmanned aerial vehicle;

The controlling the battery to execute a battery protection strategy corresponding to the current battery temperature includes:

If the current battery temperature is between the normal use temperature threshold and the restricted use temperature threshold, the discharge current of the battery is reduced to control the restricted flight of the movable platform.
The method according to claim 6, wherein if the current battery temperature is between a normal use temperature threshold and a restricted use temperature threshold, the discharge current of the battery is reduced to control the movable platform Restricted flights include:

If the current battery temperature is between the normal use temperature threshold and the restricted use temperature threshold, the discharge current of the battery is reduced to limit the flight attitude of the unmanned aerial vehicle.
The method according to claim 6, wherein if the current battery temperature is between a normal use temperature threshold and a restricted use temperature threshold, the discharge current of the battery is reduced to control the movable platform Restricted flights include:

If the current battery temperature is between the normal use temperature threshold and the restricted use temperature threshold, the discharge current of the battery is reduced to limit the unmanned aerial vehicle's variable speed flight.
The method according to claim 6, wherein if the current battery temperature is between a normal use temperature threshold and a restricted use temperature threshold, the discharge current of the battery is reduced to control the movable platform Restricted flights include:

If the current battery temperature is between the normal use temperature threshold and the restricted use temperature threshold, the discharge current of the battery is reduced to limit the flying height of the unmanned aerial vehicle.
The method according to claim 2, wherein the controlling the battery to execute a battery protection strategy corresponding to the current battery temperature comprises:

If the current battery temperature is between the restricted use temperature threshold and the first life-influencing temperature threshold, an instruction for instructing the movable platform to prepare for returning home is issued to control the movable platform to prepare for returning home.
The method according to claim 10, characterized in that if the current battery temperature is between the restricted use temperature threshold and the first life-influencing temperature threshold, issuing a message for instructing the movable platform to prepare for returning home Instructions to control the movable platform to prepare for returning home, including:

If the current battery temperature is between the restricted use temperature threshold and the first life-influencing temperature threshold, an instruction for instructing the movable platform to make preparations for returning home is issued to control the movable platform to make preparations for returning home, And give the user a reminder that the battery is overheated and it is recommended to return home.
The method according to claim 2, wherein the controlling the battery to execute a battery protection strategy corresponding to the current battery temperature comprises:

If the current battery temperature is above the second life-influencing temperature threshold, an instruction to control the movable platform to warn the user to return home is issued, so as to control the movable platform to warn the user to return home.
The method according to claim 12, characterized by comprising:

If the current battery temperature is above the second life-influencing temperature threshold, issue an instruction to control the UAV to issue a serious battery temperature warning to the user and suggest returning home as soon as possible, so as to control the UAV to issue a severe battery temperature warning to the user and suggest returning home as soon as possible hint.
The method according to claim 12, wherein the method further comprises:

If the current battery temperature is above the second life-influencing temperature threshold, record the current discharge temperature of the battery.
The method according to claim 14, wherein the method further comprises:

If the movable platform stops running and the current temperature of the battery is above the second life-influencing temperature threshold, the battery is locked to prohibit the battery from supplying power to the movable platform, And/or prohibit the battery from getting recharged.
The method according to claim 15, wherein the method further comprises:

If the battery is locked, the battery is controlled to discharge to a safe storage voltage for storage.
The method according to claim 3, wherein the normal use temperature threshold includes 65°C.
The method according to claim 3, wherein the restricted use temperature threshold includes 75°C.
The method of claim 3, wherein the first life-influencing temperature threshold includes 85°C.
The method according to claim 3, wherein the second life-influencing temperature threshold includes 90°C.
The method according to claim 1, wherein the battery is provided with a temperature sensor, and the acquiring the current battery temperature includes:

The temperature collected by the temperature sensor is acquired, and the current battery temperature is determined according to the temperature collected by the temperature sensor.
The method according to claim 1, wherein the current battery temperature comprises a surface temperature of the battery and/or an internal temperature of the battery.
A battery protection method, characterized in that the method includes:

Get the current battery temperature;

According to the current battery temperature and a preset multi-level battery protection strategy, a battery protection strategy corresponding to the current battery temperature is determined, wherein the preset multi-level battery protection strategy corresponds to multiple levels of the battery temperature Corresponding to the range, it is used to control the battery to execute a battery protection strategy corresponding to the current battery temperature, so as to realize the safe use of the battery;

The battery is controlled to execute the battery protection strategy corresponding to the current battery temperature, so as to realize the safe use of the battery.
The method according to claim 23, wherein the preset multi-level battery protection strategy comprises at least one of the following:

Control the battery to continue normal operation, reduce the discharge current of the battery, record the current discharge temperature of the battery, lock the battery, and display alarm information.
The method according to claim 23, wherein the battery temperature ranges of the multiple levels include at least one of the following: below the normal use temperature threshold, between the normal use temperature threshold and the restricted use temperature threshold, the restricted use temperature threshold Between the first influencing lifetime temperature threshold, and the second influencing lifetime temperature threshold above.
The method according to claim 23, wherein said controlling said battery to execute a battery protection strategy corresponding to said current battery temperature comprises:

If the current battery temperature is below the normal use temperature threshold, control the battery to continue normal operation.
The method according to claim 23, wherein said controlling said battery to execute a battery protection strategy corresponding to said current battery temperature comprises:

If the current battery temperature is between the normal use temperature threshold and the restricted use temperature threshold, the discharge current of the battery is reduced.
The method according to claim 27, wherein the method further comprises:

If the current battery temperature is above the second life-influencing temperature threshold, record the current discharge temperature of the battery.
The method according to claim 23, wherein the method further comprises:

If the movable platform stops running and the current temperature of the battery is above the second life-influencing temperature threshold, the battery is locked to prohibit external discharge of the battery and/or prohibit the battery Get charged.
The method according to claim 29, wherein the method further comprises:

If the battery is locked, the battery is controlled to discharge to a safe storage voltage for storage.
The method of claim 25, wherein the normal use temperature threshold includes 65°C.
The method of claim 25, wherein the restricted use temperature threshold includes 75°C.
The method of claim 25, wherein the first life-influencing temperature threshold includes 85°C.
The method of claim 25, wherein the second life-influencing temperature threshold includes 90°C.
The method according to claim 23, wherein the battery is provided with a temperature sensor, and the acquiring the current battery temperature comprises:

The temperature collected by the temperature sensor is acquired, and the current battery temperature is determined according to the temperature collected by the temperature sensor.
The method according to claim 23, wherein the current battery temperature comprises a surface temperature of the battery and/or an internal temperature of the battery.
A battery protection system, characterized in that the system includes: a memory and a processor;

The memory is used to store a computer program;

The processor is used to execute the computer program and when executing the computer program, implement the following steps:

Get the current battery temperature;

According to the current battery temperature and a preset multi-level battery protection strategy, a battery protection strategy corresponding to the current battery temperature is determined, wherein the preset multi-level battery protection strategy corresponds to multiple levels of temperature of the battery Corresponding to the range, it is used to control the battery to execute a battery protection strategy corresponding to the current battery temperature to control the operation of the movable platform;

Control the battery to execute the battery protection strategy corresponding to the current battery temperature to control the operation of the movable platform.
The system according to claim 37, wherein the preset multi-level battery protection strategy comprises at least one of the following:

Control the battery to continue normal operation, reduce the discharge current of the battery, issue instructions for instructing the movable platform to prepare for return to home before stopping operation, issue a reminder to the user that the battery is over-temperature recommended to return to home, and issue control options The mobile platform warns the user of an instruction to return home, issues a serious warning of battery temperature and recommends an instruction to return home as soon as possible, records the current discharge temperature of the battery, locks the battery, and displays alarm information.
The system according to claim 37, wherein the battery temperature range of the multiple levels includes at least one of the following: below the normal use temperature threshold, between the normal use temperature threshold and the restricted use temperature threshold, the restricted use temperature threshold Between the first influencing lifetime temperature threshold, and the second influencing lifetime temperature threshold above.
The system according to claim 38, wherein the processor implements the following steps when executing the computer program:

If the current battery temperature is below the normal use temperature threshold, control the battery to continue normal operation.
The system according to claim 38, wherein the processor implements the following steps when executing the computer program:

If the current battery temperature is between the normal use temperature threshold and the restricted use temperature threshold, the discharge current of the battery is reduced to restrict the operation of the movable platform.
The system of claim 38, wherein the movable platform comprises an unmanned aerial vehicle;

When the processor executes the computer program, the following steps are implemented:

If the current battery temperature is between the normal use temperature threshold and the restricted use temperature threshold, the discharge current of the battery is reduced to control the restricted flight of the movable platform.
The system according to claim 42, wherein the processor implements the following steps when executing the computer program:

If the current battery temperature is between the normal use temperature threshold and the restricted use temperature threshold, the discharge current of the battery is reduced to limit the flight attitude of the unmanned aerial vehicle.
The system according to claim 42, wherein the processor implements the following steps when executing the computer program:

If the current battery temperature is between the normal use temperature threshold and the restricted use temperature threshold, the discharge current of the battery is reduced to limit the unmanned aerial vehicle's variable speed flight.
The system according to claim 42, wherein the processor implements the following steps when executing the computer program:

If the current battery temperature is between the normal use temperature threshold and the restricted use temperature threshold, the discharge current of the battery is reduced to limit the flying height of the unmanned aerial vehicle.
The system according to claim 38, wherein the processor implements the following steps when executing the computer program:

If the current battery temperature is between the limited use temperature threshold and the first life-influencing temperature threshold, an instruction for instructing the movable platform to prepare for returning home is issued to control the movable platform to prepare for returning home.
The system according to claim 46, wherein the processor implements the following steps when executing the computer program:

If the current battery temperature is between the restricted use temperature threshold and the first life-influencing temperature threshold, an instruction for instructing the movable platform to make preparations for returning home is issued to control the movable platform to make preparations for returning home, And give the user a reminder that the battery is over-temperature recommended to return home.
The system according to claim 38, wherein the processor implements the following steps when executing the computer program:

If the current battery temperature is above the second life-influencing temperature threshold, an instruction to control the movable platform to warn the user to return home is issued, so as to control the movable platform to warn the user to return home.
The system according to claim 48, wherein the processor implements the following steps when executing the computer program:

If the current battery temperature is above the second life-influencing temperature threshold, issue an instruction to control the UAV to issue a serious battery temperature warning to the user and suggest returning home as soon as possible, so as to control the UAV to issue a severe battery temperature warning to the user and suggest returning home as soon as possible hint.
The system according to claim 48, wherein the processor implements the following steps when executing the computer program:

If the current battery temperature is above the second life-influencing temperature threshold, record the current discharge temperature of the battery.
The system according to claim 50, wherein the processor implements the following steps when executing the computer program:

If the movable platform stops running and the current temperature of the battery is above the second life-influencing temperature threshold, the battery is locked to prohibit the battery from supplying power to the movable platform, And/or prohibit the battery from getting recharged.
The system according to claim 51, wherein the processor implements the following steps when executing the computer program:

If the battery is locked, the battery is controlled to discharge to a safe storage voltage for storage.
The system of claim 39, wherein the normal use temperature threshold includes 65°C.
The system of claim 39, wherein the restricted use temperature threshold includes 75°C.
The system of claim 39, wherein the first life-influencing temperature threshold includes 85°C.
The system of claim 39, wherein the second life-influencing temperature threshold includes 90°C.
The system according to claim 37, wherein the battery is provided with a temperature sensor, and the processor implements the following steps when executing the computer program:

The temperature collected by the temperature sensor is acquired, and the current battery temperature is determined according to the temperature collected by the temperature sensor.
The system according to claim 37, wherein the current battery temperature comprises a surface temperature of the battery and/or an internal temperature of the battery.
A battery protection system, characterized in that the system includes: a memory and a processor;

The memory is used to store a computer program;

The processor is used to execute the computer program and when executing the computer program, implement the following steps:

Get the current battery temperature;

According to the current battery temperature and a preset multi-level battery protection strategy, a battery protection strategy corresponding to the current battery temperature is determined, wherein the preset multi-level battery protection strategy corresponds to multiple levels of the battery temperature Corresponding to the range, it is used to control the battery to execute a battery protection strategy corresponding to the current battery temperature, so as to realize the safe use of the battery;

The battery is controlled to execute the battery protection strategy corresponding to the current battery temperature, so as to realize the safe use of the battery.
The system according to claim 59, wherein the preset multi-level battery protection strategy includes at least one of the following:

Control the battery to continue normal operation, reduce the discharge current of the battery, record the current discharge temperature of the battery, lock the battery, and display alarm information.
The system according to claim 59, wherein the battery temperature range of the multiple levels includes at least one of the following: below the normal use temperature threshold, between the normal use temperature threshold and the restricted use temperature threshold, the restricted use temperature threshold Between the first influencing lifetime temperature threshold, and the second influencing lifetime temperature threshold above.
The system according to claim 59, wherein the processor implements the following steps when executing the computer program:

If the current battery temperature is below the normal use temperature threshold, control the battery to continue normal operation.
The system according to claim 59, wherein the processor implements the following steps when executing the computer program:

If the current battery temperature is between the normal use temperature threshold and the restricted use temperature threshold, the discharge current of the battery is reduced.
The system according to claim 63, wherein the processor implements the following steps when executing the computer program:

If the current battery temperature is above the second life-influencing temperature threshold, record the current discharge temperature of the battery.
The system according to claim 59, wherein the processor implements the following steps when executing the computer program:

If the movable platform stops running and the current temperature of the battery is above the second life-influencing temperature threshold, the battery is locked to prohibit external discharge of the battery and/or prohibit the battery Get charged.
The system according to claim 65, wherein the processor implements the following steps when executing the computer program:

If the battery is locked, the battery is controlled to discharge to a safe storage voltage for storage.
The system of claim 61, wherein the normal use temperature threshold includes 65°C.
The system of claim 61, wherein the restricted use temperature threshold includes 75°C.
The system of claim 61, wherein the first life-influencing temperature threshold includes 85°C.
The system of claim 61, wherein the second life-influencing temperature threshold includes 90°C.
The system according to claim 59, wherein the battery is provided with a temperature sensor, and the processor implements the following steps when executing the computer program:

The temperature collected by the temperature sensor is acquired, and the current battery temperature is determined according to the temperature collected by the temperature sensor.
The system according to claim 59, wherein the current battery temperature comprises a surface temperature of the battery and/or an internal temperature of the battery.
A movable platform, wherein the movable platform comprises the battery protection system according to any one of claims 37-50 and 52-58.
A battery, wherein the battery includes the battery protection system according to any one of claims 37-58.
A battery, wherein the battery includes the battery protection system according to any one of claims 59-72.
A computer-readable storage medium, characterized in that, the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the processor realizes any one of claims 1-22 Battery protection method.
A computer-readable storage medium, characterized in that, the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the processor realizes any one of claims 23-36 Battery protection method.