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Battery safety protection method and device for unmanned aerial vehicle

A technology for unmanned aerial vehicles and battery safety, which can be used in measuring devices, instruments, measuring electricity, etc., and can solve problems such as heavy losses

Active Publication Date: 2021-12-28
SHENZHEN AUTEL INTELLIGENT AVIATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the existing battery safety protection schemes, when a battery safety accident occurs, a unified protection strategy is adopted, and this protection strategy mainly considers the life of the battery to implement related protection functions, but does not take these issues into consideration. The activation of relevant protection functions may bring risks to unmanned aerial vehicles in flight, which will eventually lead to heavy losses

Method used

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  • Battery safety protection method and device for unmanned aerial vehicle
  • Battery safety protection method and device for unmanned aerial vehicle
  • Battery safety protection method and device for unmanned aerial vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] figure 2 It is a schematic flow chart of the battery safety protection method for unmanned aerial vehicle provided by the embodiment of the present invention, combined with figure 1 The technical solution in the first embodiment will be described together. Such as figure 2 As shown, the UAV battery safety protection method includes:

[0066] Step S110: collecting electrical performance parameters of the battery, the electrical performance parameters including the charging current value and the discharging current value of the battery.

[0067] In this embodiment, the "current value" that appears is just a numerical value, without distinction between positive and negative, and the charging and discharging preceding it are used to indicate the direction of the current. The collection of electrical performance parameters can generally be completed through corresponding sampling circuits.

[0068] Step S120: When it is determined according to the electrical performanc...

Embodiment 2

[0075] see image 3 , in one embodiment, after step S110 in the first embodiment above, further includes:

[0076] Step S130: When it is determined according to the electrical performance parameters that the discharge current value is less than the second current threshold and greater than the third current threshold, at least the following functions in the battery are turned on: discharge short-circuit protection function, over-discharge protection function, discharge Over-temperature protection function, discharge under-temperature protection function and discharge over-current protection function.

[0077] Specifically, the second current threshold is less than or equal to the first current threshold.

[0078] In one embodiment, the second current threshold is 2 amperes, and the third current threshold is 50 milliamperes. According to various test data, when the aircraft is discharged without flying, the general discharge current value is at most 1 ampere, so when the dis...

Embodiment 3

[0081] see Figure 4 , in one embodiment, the implementation process of the over-discharge protection function appearing in the above-mentioned embodiment 1 and embodiment 2 includes:

[0082] S410: Determine whether the discharge voltage of the battery is lower than a preset voltage threshold and the duration is longer than a preset time, if yes, execute step S420.

[0083] S420: Disconnect the output line of the battery.

[0084] This is equivalent to disconnecting 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 lasts longer than a preset time.

[0085] In one embodiment, the voltage threshold is 3.2 volts, and the preset time is 5 seconds.

[0086] In one embodiment, the voltage threshold is 2.3 volts, and the preset time is 30 seconds.

[0087] Normally, when the discharge voltage of the battery is lower than 3.2 volts, it is already considered low power, and if it continues to d...

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Abstract

The invention relates to a battery safety protection method and device for an unmanned aerial vehicle. The method includes: collecting electrical performance parameters of the battery, the electrical performance parameters including the charging current value and the discharging current value of the battery; according to the electrical performance parameters When it is determined that the discharge current value is greater than or equal to the first current threshold, only the discharge short-circuit protection function and / or over-discharge protection function of the battery is retained. The invention can reduce losses caused by various battery safety accidents as much as possible.

Description

【Technical field】 [0001] 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 technique】 [0002] Unmanned aerial vehicle is a product with relatively high safety requirements, especially in the flight process, a slight mistake may lead to a bombing accident. As the core of the safety of UAVs, batteries are particularly important in the safety design of UAVs. [0003] However, in the existing battery safety protection schemes, when a battery safety accident occurs, a unified protection strategy is adopted, and this protection strategy mainly considers the life of the battery to implement related protection functions, but does not take these issues into consideration. The activation of relevant protection functions may bring risks to unmanned aerial vehicles in flight, which will eventually lead to heavy losses. 【Content of invention】 [0004] In order...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/389G01R31/392G01R31/388G01R31/371
CPCG01R31/36
Inventor 秦威
Owner SHENZHEN AUTEL INTELLIGENT AVIATION TECH CO LTD