CN108535657B - Unmanned aerial vehicle battery safety protection method and device thereof - Google Patents
Unmanned aerial vehicle battery safety protection method and device thereof Download PDFInfo
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Abstract
The invention relates to a battery safety protection method and a device for an unmanned aerial vehicle, wherein the method comprises the following steps: collecting electrical performance parameters of the battery, wherein the electrical performance parameters comprise a charging current value and a discharging current value of the battery; and only retaining the discharge short-circuit protection function and/or the over-discharge protection function of the battery when the discharge current value is determined to be greater than or equal to the first current threshold value according to the electrical property parameter. The invention can reduce the loss caused by various battery safety accidents as much as possible.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of battery management, in particular to a battery safety protection method and device for an unmanned aerial vehicle.
[ background of the invention ]
The unmanned aerial vehicle is a product with higher safety requirements, and particularly, a slight error can cause a fryer accident during the flight process. The battery is used as the core of safety of the unmanned aerial vehicle, and is particularly important in the safety design of the unmanned aerial vehicle.
However, in the existing battery safety protection schemes, when a battery safety accident occurs, a unified protection strategy is adopted, and the protection strategy mainly considers the service life of the battery to implement related protection functions, but does not well consider the risks that the startup of the related protection functions may bring to an in-flight unmanned aerial vehicle, which finally results in heavy losses.
[ summary of the invention ]
In order to solve the above technical problems, embodiments of the present invention provide a method and an apparatus for protecting a battery of an unmanned aerial vehicle, which can reduce loss as much as possible.
In order to solve the above technical problems, embodiments of the present invention provide the following technical solutions:
an unmanned aerial vehicle battery safety protection method comprises the following steps:
collecting electrical performance parameters of the battery, wherein the electrical performance parameters comprise a charging current value and a discharging current value of the battery;
and only retaining the discharge short-circuit protection function and/or the over-discharge protection function of the battery when the discharge current value is determined to be greater than or equal to the first current threshold value according to the electrical property parameter.
In one embodiment, before the only reserving of the discharge short-circuit protection function and/or the over-discharge protection function of the battery, the method further includes:
determining that there is communication between the battery and the UAV.
In one embodiment, the battery powers the UAV in flight.
In one embodiment, the method further comprises the following steps:
and when the discharge current value is determined to be smaller than a second current threshold value and larger than a third current threshold value according to the electrical property parameter, at least the following functions in the battery are started:
a discharge short circuit protection function, an over-discharge protection function, a discharge over-temperature protection function, a discharge under-temperature protection function and a discharge over-current protection function;
wherein the second current threshold is less than or equal to the first current threshold.
In one embodiment, when the discharge current value is smaller than the second current threshold value and larger than the third current threshold value, the battery supplies power to the unmanned aerial vehicle which is not in flight.
In one embodiment, the method further comprises the following steps:
and when the discharging voltage of the battery is lower than a preset voltage threshold value and the duration time is longer than the preset time, disconnecting the output line of the battery.
In one embodiment, the voltage threshold is 3.2 volts and the predetermined time is 5 seconds.
In one embodiment, the voltage threshold is 2.3 volts and the predetermined time is 30 seconds.
In one embodiment, the method further comprises the following steps:
and when the charging current value is determined to be smaller than a fourth current threshold value and larger than a fifth current threshold value according to the electrical property parameters, at least the following functions in the battery are started:
the charging overcurrent protection function, the charging overtemperature protection function, the charging under-temperature protection function, the charging overvoltage protection function and the charging short circuit protection function.
In one embodiment, the first current threshold is 2 amps, the second current threshold is 2 amps, and the third current threshold is 50 milliamps.
In order to solve the above technical problems, embodiments of the present invention further provide the following technical solutions:
an unmanned aerial vehicle battery safety protection device, comprising:
the electrical performance parameter acquisition module is used for acquiring electrical performance parameters of the battery, wherein the electrical performance parameters comprise a charging current value and a discharging current value of the battery;
and the processing module is used for only reserving the discharge short-circuit protection function and/or the over-discharge protection function of the battery when the discharge current value is determined to be larger than or equal to the first current threshold according to the electrical property parameter.
In one embodiment, the processing module is further configured to, before only retaining the discharge short-circuit protection function and/or the over-discharge protection function of the battery:
determining that there is communication between the battery and the UAV.
In one embodiment, the battery powers the UAV in flight.
In one embodiment, the processing module is further configured to:
and when the discharge current value is determined to be smaller than a second current threshold value and larger than a third current threshold value according to the electrical property parameter, at least the following functions in the battery are started:
a discharge short circuit protection function, an over-discharge protection function, a discharge over-temperature protection function, a discharge under-temperature protection function and a discharge over-current protection function;
wherein the second current threshold is less than or equal to the first current threshold.
In one embodiment, when the discharge current value is smaller than the second current threshold value and larger than the third current threshold value, the battery supplies power to the unmanned aerial vehicle which is not in flight.
In one embodiment, the processing module is further configured to:
and when the discharging voltage of the battery is lower than a preset voltage threshold value and the duration time is longer than the preset time, disconnecting the output line of the battery.
In one embodiment, the voltage threshold is 3.2 volts and the predetermined time is 5 seconds.
In one embodiment, the voltage threshold is 2.3 volts and the predetermined time is 30 seconds.
In one embodiment, the processing module is further configured to:
and when the charging current value is determined to be smaller than a fourth current threshold value and larger than a fifth current threshold value according to the electrical property parameters, at least the following functions in the battery are started:
the charging overcurrent protection function, the charging overtemperature protection function, the charging under-temperature protection function, the charging overvoltage protection function and the charging short circuit protection function.
The embodiment of the invention also provides the following technical scheme:
an unmanned aerial vehicle comprises a memory and a processor, wherein the memory stores a program, and the program realizes the unmanned aerial vehicle battery safety protection method when being read and executed by the processor.
Compared with the prior art, according to the battery safety protection method provided by the embodiment of the invention, by acquiring the electrical performance parameters of the battery and only keeping the discharge short-circuit protection function and/or the over-discharge protection function of the battery when the discharge current value is determined to be greater than or equal to the first current threshold value according to the electrical performance parameters, the method is equivalent to automatically shutting down some protection functions (such as overcurrent, undertemperature, overtemperature and the like) under the condition that some special conditions are met (such as in-flight discharge), and only keeping the discharge short-circuit protection function and/or the over-discharge protection function, so that the battery can have corresponding protection strategies according to different conditions, and the battery life and the severity of an airplane fryer can be weighed, so that the loss caused by various battery safety accidents is reduced as much as possible.
[ description of the drawings ]
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
FIG. 1 is a schematic diagram of an application environment provided by an embodiment of the present invention;
fig. 2 is a schematic flow chart of a method for protecting the battery of the unmanned aerial vehicle according to an embodiment of the present invention;
FIG. 3 is a partial schematic flow chart of a method for protecting the battery of the UAV according to an embodiment of the present invention;
FIG. 4 is a partial schematic flow chart of a method for protecting the battery of the UAV according to another embodiment of the present invention;
FIG. 5 is a partial schematic flow chart of a method for protecting the battery of the UAV according to another embodiment of the present invention;
fig. 6 is a schematic flow chart of a method for protecting the safety of the battery of the unmanned aerial vehicle in a specific scenario according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a UAV battery safety protection apparatus according to an embodiment of the present invention;
fig. 8 is a block diagram of a hardware structure of an unmanned aerial vehicle according to an embodiment of the present invention.
[ detailed description ] embodiments
In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. It should be noted that the steps shown in the flowchart of the figure may be performed in a computer system such as a set of computer executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Fig. 1 is a schematic diagram of an application environment provided in an embodiment of the present invention. As shown in fig. 1, the application environment includes a battery 10, an electricity meter 20, and a microcontroller 30.
The battery 10 is composed of one or more cells, and is formed by arranging a cell group in any form for providing a direct current power supply for electrical equipment such as an electric motor. The battery 10 may have a corresponding capacity, volume size, or packaging form according to the actual situation. The battery 10 can be discharged or charged under controlled conditions, simulating normal operating conditions.
The electricity meter 20 may be any type or brand of electricity metering system or chip, and is used for calculating and determining the current electricity condition of the battery by collecting corresponding data. The fuel gauge 20 may be run with one or more suitable software programs, recording data and performing calculations based on the data.
The electricity meter 20 establishes a necessary electrical connection with the battery 10 (the electrical connection may be an indirect connection formed by a relevant electrical property parameter acquisition circuit, such as a current sampling circuit, a voltage sampling circuit, a temperature sampling circuit, and the like), and the electricity meter 20 acquires and acquires data of the battery 10 through the electrical connection to determine the current electrical quantity, current, voltage, and other electrical property parameters of the battery 10 and implement relevant protection functions (such as short-circuit protection, overcurrent protection, overvoltage protection, and overtemperature protection), which may be implemented by designing a corresponding peripheral circuit.
The microcontroller 30 is in communication connection with the electricity meter 20, and the microcontroller 30 can control the on or off of the related protection function according to the related electrical performance parameter transmitted by the electricity meter 20. If the microcontroller 30 determines that the discharge current value of the battery 10 is greater than or equal to the first current threshold value according to the electrical performance parameter transmitted by the fuel gauge 20, the fuel gauge 20 or the related peripheral circuit is controlled to retain only the discharge short-circuit protection function and/or the over-discharge protection function of the battery.
The first embodiment is as follows:
fig. 2 is a schematic flow chart of a battery safety protection method for an unmanned aerial vehicle according to an embodiment of the present invention, and the technical solution in the first embodiment is described with reference to fig. 1. As shown in fig. 2, the unmanned aerial vehicle battery safety protection method includes:
step S110: and collecting electrical performance parameters of the battery, wherein the electrical performance parameters comprise a charging current value and a discharging current value of the battery.
In this embodiment, the "current value" is only a numerical value, without a positive or negative division, and the previous charging and discharging is used to indicate the direction of the current. The acquisition of the electrical property parameters can be generally completed by corresponding sampling circuits.
Step S120: and only retaining the discharge short-circuit protection function and/or the over-discharge protection function of the battery when the discharge current value is determined to be greater than or equal to the first current threshold value according to the electrical property parameter.
Normally, as long as the battery 10 detects a discharge current, the microcontroller 30 controls the fuel gauge 20 or related peripheral circuits to start all discharge protection functions, including but not limited to over-current, over-temperature, under-temperature, over-discharge, short-circuit, etc. When the discharge current value is greater than or equal to the first current threshold value, the microcontroller 30 may adopt a related protection strategy, such as controlling the fuel gauge 20 or related peripheral circuits to retain only the discharge short-circuit protection function and/or the over-discharge protection function of the battery.
Compared with the prior art, the battery safety protection method provided by the embodiment of the invention has the advantages that the electrical performance parameters of the battery are collected, and only the discharge short-circuit protection function and/or the overdischarge protection function of the battery are reserved when the discharge current value is determined to be greater than or equal to the first current threshold according to the electrical performance parameters, so that other protection functions except the discharge short-circuit protection function and/or the overdischarge protection function are closed under the condition that some special conditions are met (such as in-flight discharge), the battery can have corresponding protection strategies according to different conditions, and the battery life and the severity of an airplane fryer can be balanced, so that the loss caused by various battery safety accidents is reduced as much as possible.
In one embodiment, the first current threshold is 2 amps. According to various test data, the aircraft is discharged in a non-flight state, the discharge current value is generally more than 1 point ampere at most, so that when the discharge current of the battery 10 is more than 2 amperes, the battery 10 supplies power to the unmanned aerial vehicle in a flight state. It is understood that in other embodiments, the first current threshold may be other values, such as 1.8 amps, 1.9 amps, 2.1 amps, etc., and is not limited thereto.
In one embodiment, in order to prevent the discovery of a situation in which an artificial discharge may be greater than or equal to the first current threshold, it is necessary to further determine whether there is communication between the battery 10 and the unmanned aerial vehicle, i.e. when it is determined that the discharge current value is greater than or equal to the first current threshold and there is communication between the battery and the unmanned aerial vehicle, the microcontroller 30 controls the shutdown of the other protection functions, leaving only the discharge short-circuit protection function and/or the over-discharge protection function of the battery.
In one embodiment, when it is determined that the discharge current value is greater than or equal to the first current threshold value, both the discharge short-circuit protection function and the over-discharge protection function are generally maintained, so that the loss due to the battery safety accident can be minimized. Because both short circuit and overdischarge can cause a fryer, the damage caused by crash is larger than that caused by stopping power supply of a battery. It is understood that in other embodiments, only one of the protection functions is retained after calculating the occurrence probability of short circuit and over-discharge, which also falls within the protection scope of the present invention.
Example two:
referring to fig. 3, in an embodiment, after the step S110 in the first embodiment, the method further includes:
step S130: and when the discharge current value is determined to be smaller than a second current threshold value and larger than a third current threshold value according to the electrical property parameter, at least the following functions in the battery are started: a discharge short circuit protection function, an over-discharge protection function, a discharge over-temperature protection function, a discharge under-temperature protection function, and a discharge over-current protection function.
In particular, the second current threshold is less than or equal to the first current threshold.
In one embodiment, the second current threshold is 2 amps and the third current threshold is 50 milliamps. According to various test data, the airplane is discharged in a non-flying state, and the discharge current value is generally more than 1 point ampere at most, so that when the discharge current value of the battery 10 is less than 2 amperes, the battery 10 supplies power to the unmanned aerial vehicle which does not fly. It is understood that in other embodiments, the second current threshold may be other values, such as 1.8 amps, 1.9 amps, 1.5 amps, etc., and is not limited thereto. In addition, the third current threshold is set mainly to prevent the discovery of misjudgment, because some reverse current may occur due to some unexpected circumstances during the charging process, but the current value is generally not greater than 50 milliamperes.
It is understood that in other embodiments, when the discharge current value is determined to be smaller than the second current threshold and larger than the third current threshold, only a part of protection functions in the battery, such as a discharge short-circuit protection function, an over-discharge protection function, and a discharge over-current protection function, may be turned on.
Example three:
referring to fig. 4, in an embodiment, the implementation process of the over-discharge protection function in the first and second embodiments includes:
s410: and judging whether the discharge voltage of the battery is lower than a preset voltage threshold value and the duration time is longer than a preset time, if so, executing the step S420.
S420: and disconnecting the output line of the battery.
This corresponds to disconnecting the output line of the battery when it is determined that the discharge voltage of the battery is below a preset voltage threshold and the duration is greater than a preset time.
In one embodiment, the voltage threshold is 3.2 volts and the predetermined time is 5 seconds.
In one embodiment, the voltage threshold is 2.3 volts and the predetermined time is 30 seconds.
Normally, when the discharging voltage of the battery is lower than 3.2 volts, the battery is low, and if the discharging is continued, the life of the battery is lost, so in one embodiment, if the battery is considered to be supplying power to the unmanned aerial vehicle which is not in flight, when the discharging voltage of the battery is lower than 3.2 volts and lasts for a preset time, the discharging overvoltage protection function is realized to enable the battery to close the main loop discharging MOS switch tube (namely, disconnect the output line of the battery).
In another embodiment, if the battery is considered to be powering an unmanned aerial vehicle in flight, it is necessary to balance the advantages and disadvantages of both battery life and explosive conditions, lowering the voltage threshold to 2.3 volts appropriately, and extending the predetermined time to 30 seconds to allow the user sufficient time to control the unmanned aerial vehicle landing.
Example four:
referring to fig. 5, in an embodiment, after the step S110 in the first embodiment, the method further includes:
step S140: and when the charging current value is determined to be smaller than a fourth current threshold value and larger than a fifth current threshold value according to the electrical property parameters, at least the following functions in the battery are started: the charging overcurrent protection function, the charging overtemperature protection function, the charging under-temperature protection function, the charging overvoltage protection function and the charging short circuit protection function.
In one embodiment, the fourth current threshold is 8 amps and the fifth current threshold is 50 milliamps. According to various test data, the charging current value of the airplane is generally controlled below 8 amperes in the charging state, otherwise, the battery is easy to generate heat, and accidents such as short circuit, even explosion, combustion and the like are caused. It is understood that in other embodiments, the fourth current threshold may be other values, such as 7.9 amps, 7.8 amps, 8.1 amps, etc., and is not limited thereto. In addition, the fifth current threshold is set mainly to prevent the discovery of misjudgment, because some reverse current may occur due to some unexpected circumstances during the charging process, but the current value is generally not greater than 50 milliamperes.
It is understood that in other embodiments, when the charging current value is determined to be less than the fourth current threshold and greater than the fifth current threshold, only a portion of the protection functions in the battery, such as the charging short-circuit protection function, the overcharge protection function, and the charging overcurrent protection function, may be turned on.
As shown in fig. 6, first, after the battery is initialized, the charge-discharge state of the battery is determined, and in this embodiment, three states of the battery need to be determined: the power supply is used for supplying power to the unmanned aerial vehicle in the flying state, and supplying power and charging to the unmanned aerial vehicle which does not fly. The method is characterized in that whether the battery is charged or discharged is mainly dependent on the direction of current, and meanwhile, the corresponding sampling circuit collects electrical performance parameters of the battery, wherein the electrical performance parameters comprise a charging current value and a discharging current value of the battery.
(1) If the charging current is detected and the charging current is determined to be more than 50 milliamperes and less than 8 amperes, the battery is considered to enter a charging state, at the moment, the charging overcurrent protection function, the charging overtemperature protection function, the charging undertemperature protection function, the charging overvoltage protection function and the charging short-circuit protection function in the battery are all started and function, corresponding safety protection of the battery in the charging process is ensured, namely whether a charging safety event of the battery occurs in real time or not is detected, after any safety event occurs, the battery closes a main loop charging MOS switch tube, the charging cannot be continued until the safety event is removed, the charging safety event can be recovered to be normal, and meanwhile, when the safety event occurs, the battery can make corresponding alarm instructions according to different safety states, such as voice prompt, light prompt and the like.
(2) If the discharging current is detected and the discharging current is determined to be more than 50 milliamperes and less than 2 amperes, the battery is considered to supply power for the unmanned aerial vehicle which does not fly, at the moment, corresponding protection functions of the battery are started, namely whether the discharging safety event of the battery occurs or not is detected in real time, once any one of the safety events of discharging overcurrent, discharging overtemperature, discharging undertemperature, overdischarging voltage being less than 3.2 volts, overdischarging time being more than 5 seconds, discharging short circuit and the like occurs, the battery closes the main loop discharging MOS switch tube, so that the main loop discharging MOS switch tube cannot continue to discharge until the safety event is removed, and meanwhile, when the safety event occurs, the battery can make corresponding alarm indications such as voice prompt, light prompt and the like according to different safety states.
(3) If discharge is detected, and when the discharge current is determined to be greater than or equal to 2 amperes and the aircraft is in communication, the battery is considered to supply power to the unmanned aircraft in the flight state, so that the discharge safety protection strategy starts a shielding mode, shields the protection functions of over-current discharge, over-temperature discharge and under-temperature discharge which are not particularly important, only keeps the over-discharge protection function and the discharge short-circuit protection function, namely only detects whether the safety accidents of discharge short circuit or over-discharge voltage occur, and when the safety accidents that the discharge short circuit or over-discharge voltage is reduced to 2.3 volts and the discharge time is greater than 30 seconds occur, the battery closes the main loop discharge MOS switch tube so that the main loop discharge MOS switch tube cannot continue to discharge any more.
The two node values of the overdischarge voltage 2.3 volts and the time 30 seconds are set, mainly because the electric quantity is nearly zero when the battery voltage is about 3 volts, and the overdischarge voltage is adjusted to be very low and the time delay of the turn-off is very long, so that the function of shielding the overdischarge protection is almost equal to the function of shielding the discharge current when the discharge current is turned off at 2.3 volts. In addition, the protection value of the short-circuit protection also needs to be set as large as possible within the cell safety range, for example, 10 times of the normal discharge current. The measures can reduce the occurrence of battery safety events during flight to the maximum extent, and further avoid the situation that the machine is exploded due to the starting of the protection function of the battery.
The over-discharge protection function is also reserved during flying because when the airplane lands on the ground, the discharge current of the battery can be more than 2 amperes and communication exists, the battery is still in a flying mode, if the over-discharge protection function does not exist, and the battery is not pulled out timely by a user, the electric quantity of the battery is completely exhausted, and when the voltage of the battery is lower than 1 volt, the chemical materials in the battery cell have irreversible reaction, so that capacity attenuation, even battery bulge and the like are caused.
Example five:
referring to fig. 7, an embodiment of a battery safety protection device for an unmanned aerial vehicle according to the present invention is shown. Unmanned vehicles battery safety arrangement includes: the electrical property parameter acquisition module 610 and the processing module 620.
The electrical property parameter collecting module 610 is configured to collect electrical property parameters of the battery, where the electrical property parameters include a charging current value and a discharging current value of the battery. The processing module 620 is configured to only retain a discharge short-circuit protection function and/or an over-discharge protection function of the battery when it is determined that the discharge current value is greater than or equal to a first current threshold value according to the electrical performance parameter.
Further, in one embodiment, processing module 620 is also configured to determine that there is communication between the battery and the UAV.
Further, in one embodiment, the processing module 620 is further configured to turn on at least the following functions in the battery when it is determined that the discharge current value is smaller than the second current threshold and larger than the third current threshold according to the electrical performance parameter: a discharge short circuit protection function, an over-discharge protection function, a discharge over-temperature protection function, a discharge under-temperature protection function and a discharge over-current protection function; wherein the second current threshold is less than or equal to the first current threshold.
Further, in one embodiment, the processing module 620 is further configured to disconnect the output line of the battery when it is determined that the discharge voltage of the battery is lower than a preset voltage threshold and the duration is greater than a preset time.
In one embodiment, the voltage threshold is 3.2 volts and the predetermined time is 5 seconds.
In one embodiment, the voltage threshold is 2.3 volts and the predetermined time is 30 seconds.
In one embodiment, the processing module is further configured to turn on at least the following functions in the battery upon determining from the electrical performance parameter that a charging current value is less than a fourth current threshold and greater than a fifth current threshold: the charging overcurrent protection function, the charging overtemperature protection function, the charging under-temperature protection function, the charging overvoltage protection function and the charging short circuit protection function.
It should be noted that, the method embodiment and the apparatus embodiment are implemented based on the same inventive concept, and technical effects and technical features that the method embodiment can have can be executed or implemented by corresponding functional modules in the apparatus embodiment, which are not described herein for simplicity and convenience of presentation.
Example six:
fig. 8 is a schematic structural diagram of an unmanned aerial vehicle according to an embodiment of the present invention. The unmanned aerial vehicle can execute the unmanned aerial vehicle battery safety protection method provided by the method embodiment. As shown in fig. 8, the unmanned aerial vehicle 70 includes one or more processors 701 and a memory 702. In fig. 8, one processor 701 is taken as an example. The unmanned aerial vehicle may further include an alert indicating device 703. Of course, other suitable device modules may be added or omitted as the actual situation requires.
The processor 701, the memory 702 and the alarm indication device 703 may be connected by a bus or other means, and fig. 8 illustrates the bus connection.
The memory 702 is a non-volatile computer-readable storage medium, and may be used to store a non-volatile software program, a non-volatile computer-executable program, and modules, such as program instructions or modules corresponding to the method for battery safety protection of an unmanned aerial vehicle in the embodiment of the present invention, for example, the electrical performance parameter collecting module 610 and the processing module 620 shown in fig. 7, and the warning indication device 703 in the unmanned aerial vehicle may be a voice playing device or a light indication device, which is not limited herein. The processor 701 executes various functional applications and data processing of the server by running the nonvolatile software programs, instructions and modules stored in the memory 702, namely, the method for protecting the battery of the unmanned aerial vehicle according to the embodiment of the method is implemented.
The memory 702 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store some historical data calculated by the electricity meter, and the like. Further, the memory 702 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some embodiments, the memory 702 may optionally include memory located remotely from the processor 701, examples of which include, but are not limited to, the internet, an intranet, a local area network, a mobile communications network, and combinations thereof.
Those of skill would further appreciate that the various steps of the exemplary motor control methods described in connection with the embodiments disclosed herein may be embodied in electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation.
Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention. The computer software may be stored in a computer readable storage medium, and when executed, may include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a read-only memory or a random access memory.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; within the idea of the invention, also technical features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (12)
1. An unmanned aerial vehicle battery safety protection method is characterized by comprising the following steps:
collecting electrical performance parameters of the battery, wherein the electrical performance parameters comprise a charging current value and a discharging current value of the battery;
determining that the discharge current value is greater than or equal to a first current threshold value according to the electrical performance parameters, and when communication exists between the battery and the unmanned aerial vehicle, the battery supplies power to the unmanned aerial vehicle in a flight state, and only the discharge short-circuit protection function and/or the over-discharge protection function of the battery are/is reserved;
when the discharge current value is determined to be smaller than a second current threshold value and larger than a third current threshold value according to the electrical property parameters, the battery supplies power to the unmanned aerial vehicle which does not fly, and at least the following functions in the battery are started: a discharge short circuit protection function, an over-discharge protection function, a discharge over-temperature protection function, a discharge under-temperature protection function and a discharge over-current protection function; wherein the second current threshold is less than or equal to the first current threshold.
2. The method of claim 1, further comprising:
and when the discharging voltage of the battery is lower than a preset voltage threshold value and the duration time is longer than the preset time, disconnecting the output line of the battery.
3. The method of claim 2, wherein the voltage threshold is 3.2 volts and the predetermined time is 5 seconds.
4. The method of claim 2, wherein the voltage threshold is 2.3 volts and the predetermined time is 30 seconds.
5. The method of claim 1, further comprising:
and when the charging current value is determined to be smaller than a fourth current threshold value and larger than a fifth current threshold value according to the electrical property parameters, at least the following functions in the battery are started:
the charging overcurrent protection function, the charging overtemperature protection function, the charging under-temperature protection function, the charging overvoltage protection function and the charging short circuit protection function.
6. The method of claim 1, wherein the first current threshold is 2 amps, the second current threshold is 2 amps, and the third current threshold is 50 milliamps.
7. An unmanned aerial vehicle battery safety arrangement, characterized by, includes:
the electrical performance parameter acquisition module is used for acquiring electrical performance parameters of the battery, wherein the electrical performance parameters comprise a charging current value and a discharging current value of the battery;
a processing module to: when the discharge current value is determined to be larger than or equal to a first current threshold value according to the electrical performance parameters and communication exists between the battery and the unmanned aerial vehicle, the battery supplies power to the unmanned aerial vehicle in a flight state, and only the discharge short-circuit protection function and/or the over-discharge protection function of the battery are reserved;
the processing module is further configured to:
when the discharge current value is determined to be smaller than a second current threshold value and larger than a third current threshold value according to the electrical property parameters, the battery supplies power to the unmanned aerial vehicle which does not fly, and at least the following functions in the battery are started: a discharge short circuit protection function, an over-discharge protection function, a discharge over-temperature protection function, a discharge under-temperature protection function and a discharge over-current protection function; wherein the second current threshold is less than or equal to the first current threshold.
8. The apparatus of claim 7, wherein the processing module is further configured to:
and when the discharging voltage of the battery is lower than a preset voltage threshold value and the duration time is longer than the preset time, disconnecting the output line of the battery.
9. The apparatus of claim 8, wherein the voltage threshold is 3.2 volts and the predetermined time is 5 seconds.
10. The apparatus of claim 8, wherein the voltage threshold is 2.3 volts and the predetermined time is 30 seconds.
11. The apparatus of claim 7, wherein the processing module is further configured to:
and when the charging current value is determined to be smaller than a fourth current threshold value and larger than a fifth current threshold value according to the electrical property parameters, at least the following functions in the battery are started:
the charging overcurrent protection function, the charging overtemperature protection function, the charging under-temperature protection function, the charging overvoltage protection function and the charging short circuit protection function.
12. An UAV comprising a memory and a processor, the memory storing a program that, when read and executed by the processor, implements the UAV battery safety protection method of any one of claims 1 to 6.
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| CN201810270381.3A CN108535657B (en) | 2018-03-29 | 2018-03-29 | Unmanned aerial vehicle battery safety protection method and device thereof |
| PCT/CN2018/115448 WO2019184386A1 (en) | 2018-03-29 | 2018-11-14 | Safety protection method for battery of unmanned aerial vehicle and device thereof |
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| CN111313491A (en) * | 2019-11-12 | 2020-06-19 | 珠海格力电器股份有限公司 | Control method and device of energy storage system and power supply control circuit |
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