CN108363020B

CN108363020B - Method and device for determining battery state, chip, battery and aircraft

Info

Publication number: CN108363020B
Application number: CN201810289571.XA
Authority: CN
Inventors: 刘玉华
Original assignee: Autel Robotics Co Ltd
Current assignee: Shenzhen Autel Intelligent Aviation Technology Co Ltd
Priority date: 2018-04-03
Filing date: 2018-04-03
Publication date: 2020-03-06
Anticipated expiration: 2038-04-03
Also published as: CN108363020A; WO2019192183A1

Abstract

The embodiment of the invention relates to the technical field of batteries, and discloses a method and a device for determining the state of a battery, a chip, the battery and an aircraft. Wherein, the method comprises the following steps: judging whether the duration of the time that the electrical parameters of the battery meet the charging conditions is greater than or equal to a preset time or not; if so, determining that the battery is in a normal charging state; if not, determining that the battery is in an abnormal charging state. By the method for determining the battery state, the accuracy of judging the battery state can be effectively improved.

Description

Method and device for determining battery state, chip, battery and aircraft

Technical Field

The embodiment of the invention relates to the technical field of batteries, in particular to a method and a device for determining the state of a battery, a chip, the battery and an aircraft.

Background

Batteries are an essential component for the operation of various devices, such as aircraft and the like. In the application process of the battery of the aircraft, various operation states exist, such as a discharging state, a charging state, a starting state, a shutdown state and the like. The battery needs to determine the current state of the battery itself, so as to perform corresponding state conversion according to the current state of the battery, for example, the battery enters a charging state or a discharging state from a starting state, so as to ensure the normal use requirement of the battery.

In the prior art, the battery of the aircraft generally mainly depends on the current charging and discharging direction to judge the current state of the battery in the application. Specifically, when a discharge current exists, the battery is judged to be in a normal discharge state; when the charging current exists, the battery is judged to be in a normal charging state.

However, when the battery is used on an aircraft, the external environment is relatively complex, a lot of interferences exist, and meanwhile, the charging and discharging directions of the current of the aircraft are not determined in the flying process, so that the battery state is directly judged only by the charging and discharging directions of the current, and further, if the battery performs corresponding state jumping, misjudgment is easily caused in many cases, so that the battery state is abnormal, and the aircraft is more likely to explode and the like seriously.

Disclosure of Invention

The invention mainly aims to provide a method and a device for determining a battery state, a chip, a battery and an aircraft, which have high accuracy in judging the battery state.

The embodiment of the invention discloses the following technical scheme:

to solve the above technical problem, an embodiment of the present invention provides a method for determining a battery state, where the method includes:

judging whether the duration of the time that the electrical parameters of the battery meet the charging conditions is greater than or equal to a preset time or not;

if so, determining that the battery is in a normal charging state;

if not, determining that the battery is in an abnormal charging state.

In some embodiments, the normal state of charge refers to a state where there is no disturbing current in the battery; the abnormal state of charge refers to a state in which an interference current exists in the battery.

In some embodiments, the electrical parameter of the battery comprises a current and a current fluctuation amplitude of the battery.

In some embodiments, the determining whether the time for which the electrical parameter of the battery satisfies the charging condition is greater than or equal to a preset time includes:

judging whether the electrical parameters meet charging conditions or not to obtain a judgment result, and determining chargeable state counting according to the judgment result, wherein the chargeable state counting is used for counting the duration time of the electrical parameters meeting the charging conditions;

and determining whether the duration time is greater than or equal to a preset time or not according to the chargeable state count.

In some embodiments, the chargeable state count is a first chargeable state count;

the judging whether the electrical parameters meet charging conditions or not to obtain a judgment result, and determining chargeable state counting according to the judgment result comprises the following steps:

judging whether the current is larger than a first preset current threshold value or not;

if the current is larger than the first preset current threshold, judging whether the current fluctuation amplitude is smaller than a preset current fluctuation amplitude;

and if the current fluctuation amplitude is smaller than the preset current fluctuation amplitude, adding one to the first chargeable state count.

In some embodiments, the electrical parameter of the battery further comprises a voltage of the battery.

In some embodiments, the chargeable state count is a second chargeable state count;

if the current is smaller than or equal to the first preset current threshold, judging whether the current is larger than a second preset current threshold;

if the current is larger than the second preset current threshold, judging whether the voltage is larger than a preset voltage threshold;

if the voltage is larger than a preset voltage threshold value, judging whether the current fluctuation amplitude is smaller than a preset current fluctuation amplitude;

and if the fluctuation amplitude of the current is smaller than the preset current fluctuation amplitude, adding one to the second chargeable state count.

In some embodiments, the method further comprises:

charging the battery when it is determined that the battery is in a normal charging state.

In order to solve the above technical problem, an embodiment of the present invention further provides an apparatus for determining a battery state, where the apparatus includes:

the judging module is used for judging whether the time for which the electrical parameters of the battery meet the charging conditions is longer than or equal to preset time or not;

the first determining module is used for determining that the battery is in a normal charging state when the judging module judges that the duration time is greater than or equal to the preset time;

and the second determining module is used for determining that the battery is in an abnormal charging state when the judging module judges that the duration time is less than the preset time.

In some embodiments, the determining module comprises:

the third determining module is used for judging whether the electrical parameters meet charging conditions or not to obtain a judgment result, and determining chargeable state counting according to the judgment result, wherein the chargeable state counting is used for counting the duration time of the electrical parameters meeting the charging conditions;

and the fourth determining module is used for determining whether the continuous time is greater than or equal to the preset time or not according to the chargeable state count.

the third determining module is specifically configured to:

In some embodiments, the apparatus further comprises:

and the charging module is used for charging the battery when the first determining module determines that the battery is in a normal charging state.

In order to solve the above technical problem, an embodiment of the present invention further provides a chip, including:

at least one processor; and the number of the first and second groups,

a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,

the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of determining battery status as described above.

To solve the above technical problem, embodiments of the present invention also provide a computer program product including a computer program stored on a non-volatile computer-readable storage medium, the computer program including program instructions that, when executed by a computer, cause the computer to perform the method of determining a battery state as described above.

To solve the above technical problem, an embodiment of the present invention further provides a non-transitory computer-readable storage medium storing computer-executable instructions for causing a computer to execute the method for determining a battery state as described above.

In order to solve the above technical problem, an embodiment of the present invention further provides a battery, including the chip as described above.

In order to solve the technical problem, an embodiment of the present invention further provides an aircraft, including the battery as described above, where the battery is used for providing power.

The battery state is judged directly only by the charging and discharging direction of the current, so that misjudgment is easy to generate, and the battery state is judged according to whether the duration time for which the electrical parameters of the battery meet the charging condition is greater than or equal to the preset time, so that misjudgment can be effectively prevented, the accuracy for judging the battery state is improved, the stability and the reliability of the functions of the battery are ensured, and the flight safety of an aircraft using the battery is further ensured.

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 flow chart of a method for determining a battery status according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a current waveform from a limit test of current to a single motor of an aircraft provided by an embodiment of the present invention;

FIG. 3 is a schematic diagram of a charging current variation curve during a full-charging process of a battery according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a general process for determining a battery status according to an embodiment of the present invention;

FIG. 5 is a flow chart illustrating a method for determining a battery status according to another embodiment of the present invention;

FIG. 6 is a schematic diagram of an apparatus for determining a battery status according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of an apparatus for determining a battery status according to another embodiment of the present invention;

FIG. 8 is a diagram illustrating a hardware structure of a chip according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of a battery provided by an embodiment of the present invention;

FIG. 10 is a schematic illustration of an aircraft provided by an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

The embodiments of the present invention will be further explained with reference to the drawings.

Example 1:

the embodiment of the invention is one embodiment of a method for determining a battery state provided by the invention. Fig. 1 is a flowchart illustrating a method for determining a battery status according to an embodiment of the present invention. The method for determining the state of the battery can be used for determining the state of various batteries, such as lithium batteries and the like. The battery can be applied to various devices containing the battery, such as aircraft, electric vehicles and the like. The following description of the invention uses an aircraft as an example of a device incorporating the battery. The method for determining the battery state can be executed by any suitable type of chip which has certain logic operation capability and can realize the function of determining the battery state, such as a main control chip of the battery and the like. The following description will specifically take a main control chip of a battery as an example.

Referring to fig. 1, the method of determining the state of the battery includes:

101: and judging whether the duration of the time that the electrical parameters of the battery meet the charging conditions is greater than or equal to the preset time.

Among the electrical parameters of the battery are, but not limited to: the current of the battery, the current fluctuation amplitude, the voltage of the battery, and the like.

For an aircraft needing to rely on a battery to provide power for the aircraft, the fact that the battery can accurately judge the state of the battery is the key for guaranteeing the normal operation of the aircraft. At present, the battery state of the aircraft is judged by depending on the charging and discharging direction of current, and the method has high misjudgment risk. For example, as shown in fig. 2, a schematic of a current waveform obtained from a limit test of the current of a single motor of an aircraft is shown. As can be seen from fig. 2, a large reverse charging current occurs in the single motor during the fast switching between the full throttle forward and full throttle reverse, which is-4.1A as shown in fig. 2 and lasts for about 0.171 s. Wherein, the negative sign in-4.1A of the reverse charging current indicates that the reverse charging current is opposite to the discharging current. Although the duration of the reverse charging current is short, it can be seen from the figure that if the reverse charging current occurs in the process of decelerating and reversely pushing the motor, in this case, if the total current becomes the charging direction, i.e. the charging current, because of the reverse charging current, and if the battery just samples such a current, the battery is determined to be in the charging state according to the normal determination logic of the control chip of the battery, and then the battery is controlled to enter the charging state, and along with the disappearance of the reverse charging current, the battery enters the shutdown state, and then the aircraft explodes, etc. will be caused.

Therefore, in order to avoid erroneous judgment and the like caused by adopting the charging and discharging direction of the current to judge the state of the battery of the aircraft, the embodiment of the invention determines the state of the battery according to whether the duration of the time for judging whether the electrical parameter of the battery meets the charging condition is greater than or equal to the preset time, namely, determines that the battery is in a normal charging state or an abnormal charging state, so as to improve the accuracy for judging the state of the battery, avoid the erroneous judgment, ensure the stability and the reliability of the function of the battery and further ensure the flight safety of the aircraft.

Specifically, the determining whether the duration of the time that the electrical parameter of the battery satisfies the charging condition is greater than or equal to a preset time includes: judging whether the electrical parameters meet charging conditions or not to obtain a judgment result, and determining chargeable state counting according to the judgment result, wherein the chargeable state counting is used for counting the duration time of the electrical parameters meeting the charging conditions; and determining whether the duration time is greater than or equal to a preset time or not according to the chargeable state count.

Further, considering that the existence time of the reverse charging current is generally short and the fluctuation is large, in the embodiment of the present invention, the erroneous determination due to the existence of the interference current such as the reverse charging current can be avoided by detecting the duration for which the charging condition is satisfied depending on the magnitude of the current and the fluctuation range of the current as the charging condition. Specifically, the charging condition may be that the current is greater than a first preset current threshold, and the current fluctuation range is smaller than a preset current fluctuation range.

Through the method, misjudgment caused by the occurrence of reverse charging current can be effectively avoided, but the method does not consider the situation that the electric quantity of the battery is very high, namely the problem that the battery cannot be charged when the electric quantity of the battery is high can be caused. For example, as shown in fig. 3, which is a schematic diagram of a variation curve of a charging current in a full charge process of a battery, as shown in fig. 3, when the electric quantity of the battery is very high, the voltage of the battery is very close to the voltage of a charger providing power for the battery, and at this time, the charging current is gradually reduced when the battery is close to the full charge, as shown in fig. 3, the charging current is gradually reduced from 4.3A to about 300mA, so if the battery is charged by accessing the charger in a very high electric quantity, it is likely that the current is smaller than a first preset current threshold, in this case, if the charging condition is determined by using a current larger than the first preset current threshold and a current fluctuation amplitude smaller than the preset current fluctuation amplitude, the problem that the battery cannot be charged in a high electric quantity is caused. Therefore, the problem that the battery can not be charged due to high electric quantity is solved by using the current magnitude, the current fluctuation amplitude and the voltage magnitude as the charging conditions and detecting the duration of the charging conditions, and the accuracy of judging the battery state is further improved.

That is, through the cooperation of above-mentioned two kinds of modes, can make the battery get into the charged state under the prerequisite when guaranteeing normal charger access, avoid the interference current that probably produces as far as, reduce the erroneous judgement, guarantee the reliable and stable of battery function.

Specifically, a flowchart of the above two methods of cooperation determination is shown in fig. 4. Wherein, for the purpose of distinguishing, when aiming at the interference of the reverse charging current, the chargeable state counting is the first chargeable state counting; when the battery is charged with a high electric quantity, the chargeable state count is a second chargeable state count. Moreover, it can be understood that, before the determination, the main control chip of the battery needs to acquire the electrical parameters of the battery first to perform the subsequent determination.

For the interference of the reverse charging current, after acquiring the electrical parameter of the battery, the determining whether the electrical parameter meets the charging condition to obtain a determination result, and determining the chargeable state count according to the determination result, including: judging whether the current is larger than a first preset current threshold value or not; if the current is larger than the first preset current threshold, judging whether the current fluctuation amplitude is smaller than a preset current fluctuation amplitude; and if the current fluctuation amplitude is smaller than the preset current fluctuation amplitude, adding one to the first chargeable state count. The first preset current threshold may be a value set by a user, or a value determined according to the adapter charging current, and the adapter charging current is usually 4.3A, so the first preset current threshold may be set to 3A, and the like. The preset current fluctuation amplitude can be a value set by a user in a self-defined manner, or can be the maximum amplitude of normal current fluctuation obtained by testing in advance according to an actual situation, for example, the amplitude of the normal current fluctuation does not exceed 60mA, so that the preset current fluctuation amplitude can be 60 mA. When the charging condition is satisfied, the first chargeable state count is increased by one; otherwise, the first chargeable state count is cleared. And counting the duration that the current is greater than the first preset current threshold and the current fluctuation amplitude is less than the preset current fluctuation amplitude by a first chargeable state count to judge whether the duration that the electrical parameter of the battery meets the charging condition is greater than or equal to the preset time, so as to determine the state of the battery and further control the state conversion of the battery. Specifically, it is determined whether the first chargeable state count is greater than or equal to a preset time to determine the battery state. The preset time can be a value set by a user in a self-defined mode, if the preset time is 5s, the condition that the state of the battery is misjudged due to the occurrence of one reverse charging current occasionally can be effectively avoided by detecting whether the electrical parameters of the battery in a continuous period of time meet the full-charging condition.

When the problem that the battery cannot be charged due to high electric quantity is solved, after the electrical parameter of the battery is acquired, whether the electrical parameter meets a charging condition is judged to obtain a judgment result, and a chargeable state count is determined according to the judgment result, wherein the method comprises the following steps: judging whether the current is larger than a first preset current threshold value or not; if the current is smaller than or equal to the first preset current threshold, judging whether the current is larger than a second preset current threshold; if the current is larger than the second preset current threshold, judging whether the voltage is larger than a preset voltage threshold; if the voltage is larger than a preset voltage threshold value, judging whether the current fluctuation amplitude is smaller than a preset current fluctuation amplitude; and if the fluctuation amplitude of the current is smaller than the preset current fluctuation amplitude, adding one to the second chargeable state count. The first preset current threshold is similar to the setting manner described above, that is, the first preset current threshold may be 3A. The second preset current threshold value can be a value set by a user in a self-defined manner, or can be determined according to the minimum value of the charging current obtained by testing in advance according to the actual situation, if the minimum value of the charging current is generally not less than 200mA, considering possible other influence factors, the protection data is obtained under the current value, namely the second preset current threshold value is slightly less than the minimum value; furthermore, the second preset current threshold may be set to 100mA in consideration of the fact that the conventional battery fuel gauge may be interfered by an external strong magnetic environment, that is, the fuel gauge may generate a current reading of 50mA at maximum in case of strong magnetic interference. The preset voltage threshold may be a value set by a user in a self-defined manner, or a value determined according to pre-test data, for example, the charging current generally starts to decrease when the voltage of the battery reaches 13V, and considering other possible influence factors, the protection data is obtained under the voltage value, that is, the preset voltage threshold may be set to 12.9V. The preset current fluctuation range is determined in a similar manner to the above-described manner, i.e., the preset current fluctuation range may be 60 mA. When the charging condition is satisfied, the second chargeable state count is increased by one; otherwise, the second chargeable state count is cleared. Wherein clearing the second chargeable state count comprises: when the current is less than or equal to a second preset current threshold, clearing the second chargeable state count; when the voltage is less than or equal to the preset voltage threshold, clearing the second chargeable state count; and when the fluctuation amplitude of the current is greater than or equal to the preset current fluctuation amplitude, clearing the second chargeable state count. And counting the second chargeable state, wherein the current is smaller than or equal to the first preset current threshold and larger than a second preset current threshold, the voltage is larger than a preset voltage threshold, and the current fluctuation amplitude is smaller than the duration of the preset current fluctuation amplitude, so as to judge whether the duration of the electrical parameter of the battery meeting the charging condition is larger than or equal to the preset time, thereby determining the state of the battery and further controlling the state conversion of the battery. Specifically, it is determined whether the second chargeable state count is greater than or equal to a preset time to determine the battery state. The preset time can be a value set by a user in a self-defined mode, if the preset time is 5s, the problem that the battery can not be charged due to high electric quantity can be effectively solved by detecting whether the electrical parameters of the battery in a continuous period meet the full-charge condition, and the accuracy of judging the state of the battery is further improved.

It should be noted that, in the present embodiment, the specific settings of the parameters, such as the first preset current threshold being 3A, the second preset current threshold being 100mA, the preset voltage threshold being 12.9V, the preset current fluctuation amplitude being 60mA, and the preset time being 5s, are for illustrative purposes and are not to be construed as limitations thereof.

102: and when the duration time is greater than or equal to the preset time, determining that the battery is in a normal charging state.

The normal charging state refers to a state where the battery does not have an interference current, for example, when there is no interference such as a reverse charging current, an external charger charges the battery. When the duration time is greater than or equal to the preset time, namely the chargeable state count is greater than or equal to the preset time, the main control chip of the battery determines that the battery is in a normal charging state, so that the battery can be controlled to enter the charging state, the purpose that the battery can be normally used is achieved, misjudgment is avoided, the stability and reliability of the functions of the battery are ensured, and the safety of airplane flight is further ensured.

103: and when the duration time is less than the preset time, determining that the battery is in an abnormal charging state.

The abnormal state of charge refers to a state in which an interference current, such as a reverse charge current, is present in the battery. And when the duration time is less than the preset time, namely the chargeable state count is less than the preset time, the main control chip of the battery determines that the battery is in an abnormal charging state, and the battery is forbidden to enter the charging state.

It should be noted that, as can be understood by those skilled in the art from the description of the embodiments of the present invention, in different embodiments, the

steps

101 and 103 may have different execution sequences without contradiction, such as the step 102 and the step 103 being executed simultaneously.

According to the embodiment of the invention, the state of the battery is judged according to whether the time for which the electrical parameters of the battery meet the charging conditions is longer than or equal to the preset time, so that misjudgment can be effectively prevented, and the accuracy for judging the state of the battery is improved, thereby ensuring the stability and reliability of the functions of the battery and further ensuring the flight safety of an aircraft using the battery.

Example 2:

the embodiment of the invention is another embodiment of the method for determining the battery state provided by the invention. Fig. 5 is a flowchart illustrating a method for determining a battery status according to another embodiment of the present invention. The method for determining the state of the battery can be used for determining the state of various batteries, such as lithium batteries and the like. The battery can be applied to various devices containing the battery, such as aircraft, electric vehicles and the like. The following description of the invention uses an aircraft as an example of a device incorporating the battery. The method for determining the battery state can be executed by any suitable type of chip which has certain logic operation capability and can realize the function of determining the battery state, such as a main control chip of the battery and the like. The following description will specifically take a main control chip of a battery as an example.

Referring to fig. 5, the method of determining the state of the battery includes:

501: and judging whether the duration of the time that the electrical parameters of the battery meet the charging conditions is greater than or equal to the preset time.

502: and when the duration time is greater than or equal to the preset time, determining that the battery is in a normal charging state.

503: and when the duration time is less than the preset time, determining that the battery is in an abnormal charging state.

It should be noted that, the steps 501-503 in the embodiment of the present invention are similar to the steps 101-103 in the embodiment, and the technical details not described in detail in the steps 501-503 in the embodiment of the present invention can refer to the detailed description of the steps 101-103 in the embodiment, and therefore, the detailed description thereof is omitted here.

504: charging the battery when it is determined that the battery is in a normal charging state.

When the main control chip of the battery determines that the battery is in a normal charging state, the battery can be charged. For example, the main control chip of the battery is closed by controlling a switch in the charging loop, so that the charging loop is conducted, and an external charger can charge the battery, thereby ensuring the stability and reliability of the functions of the battery and further ensuring the flight safety of the aircraft.

steps

501 and 504 may have different execution sequences without contradiction, such as the step 502 and the step 503 are executed simultaneously.

Example 3:

the embodiment of the invention is one embodiment of the device for determining the battery state provided by the invention. Fig. 6 is a schematic diagram of an apparatus for determining a battery status according to an embodiment of the present invention. The device 60 for determining the battery status can be used for determining the status of various batteries, such as lithium batteries, etc. The device 60 for determining the battery status may be configured in any suitable type of chip with certain logic operation capability, such as a main control chip configured in the battery.

Referring to fig. 6, the apparatus 60 for determining a battery state includes:

the determining module 601 is configured to determine whether a duration that the electrical parameter of the battery meets the charging condition is greater than or equal to a preset time.

In order to avoid erroneous judgment and the like caused by judging the state of the battery of the aircraft by adopting the charging and discharging direction of the current, the judging module 601 determines the state of the battery according to whether the duration of the time for judging whether the electrical parameter of the battery meets the charging condition is greater than or equal to the preset time, namely, determines that the battery is in a normal charging state or an abnormal charging state, so as to improve the accuracy for judging the state of the battery and avoid the erroneous judgment, thereby ensuring the stability and reliability of the function of the battery and further ensuring the flight safety of the aircraft.

Specifically, the determining module 601 includes: a third determining module 6011, configured to determine whether the electrical parameter meets a charging condition to obtain a determination result, and determine a chargeable state count according to the determination result, where the chargeable state count is used to perform statistics on a duration time that the electrical parameter meets the charging condition; a fourth determining module 6012, configured to determine whether the duration is greater than or equal to a preset time according to the chargeable state count.

Further, considering that the existence time of the reverse charging current is short and the fluctuation is large, the determining module 601 may avoid the erroneous determination caused by the existence of the interference current such as the reverse charging current by detecting the duration of the charging condition depending on the magnitude of the current and the fluctuation range of the current as the charging condition. Specifically, the charging condition may be that the current is greater than a first preset current threshold, and the current fluctuation range is smaller than a preset current fluctuation range.

The determining module 601 can effectively avoid the misjudgment caused by the occurrence of the reverse charging current through the above method, but the above method does not consider the situation that the electric quantity of the battery is very high, that is, the problem that the battery cannot be charged when the electric quantity of the battery is high may be caused through the above method. Therefore, the determining module 601 can solve the problem that the battery may not be charged due to high electric quantity by detecting the duration of the battery meeting the charging condition by using the magnitude of the current, the fluctuation range of the current and the magnitude of the voltage as the charging condition, thereby further improving the accuracy of determining the state of the battery.

Wherein, for the purpose of distinguishing, when aiming at the interference of the reverse charging current, the chargeable state counting is the first chargeable state counting; when the battery is charged with a high electric quantity, the chargeable state count is a second chargeable state count. Moreover, it can be understood that the electrical parameters of the battery need to be acquired before the determination module 601 performs the determination, so as to perform the subsequent determination.

Specifically, for the disturbance of the reverse charging current, after acquiring the electrical parameter of the battery, the third determining module 6011 is specifically configured to: judging whether the current is larger than a first preset current threshold value or not; if the current is larger than the first preset current threshold, judging whether the current fluctuation amplitude is smaller than a preset current fluctuation amplitude; and if the current fluctuation amplitude is smaller than the preset current fluctuation amplitude, adding one to the first chargeable state count. The first preset current threshold may be 3A, etc. The preset current fluctuation amplitude may be 60 mA. When the third determining module 6011 determines that the electrical parameter satisfies the charging condition, the first chargeable state count is incremented by one; otherwise, the first chargeable state count is cleared. And, the first chargeable state count counts the time during which the current is greater than the first preset current threshold and the current fluctuation amplitude is less than the preset current fluctuation amplitude, so that the fourth determining module 6012 determines whether the time during which the electrical parameter of the battery satisfies the charging condition is greater than or equal to the preset time, thereby determining the battery state and further controlling the state transition of the battery. Specifically, the fourth determining module 6012 determines whether the first chargeable state count is greater than or equal to a preset time to determine the battery state. The preset time may be 5s, and whether the electrical parameter of the battery in a continuous period of time meets the full charge condition is detected by the third determining module 6011 and the fourth determining module 6012, so that the condition that the state of the battery is erroneously determined due to the occurrence of an occasional reverse charge current can be effectively avoided.

When the problem that the battery cannot be charged due to high electric quantity is solved, after the electrical parameters of the battery are acquired, the third determining module 6011 is specifically configured to: judging whether the current is larger than a first preset current threshold value or not; if the current is smaller than or equal to the first preset current threshold, judging whether the current is larger than a second preset current threshold; if the current is larger than the second preset current threshold, judging whether the voltage is larger than a preset voltage threshold; if the voltage is larger than a preset voltage threshold value, judging whether the current fluctuation amplitude is smaller than a preset current fluctuation amplitude; and if the fluctuation amplitude of the current is smaller than the preset current fluctuation amplitude, adding one to the second chargeable state count. Wherein the first preset current threshold may take 3A. The second preset current threshold may be set to 100 mA. The preset voltage threshold may be set to 12.9V. The preset current fluctuation amplitude may be 60 mA. When the charging condition is satisfied, the second chargeable state count is increased by one; otherwise, the second chargeable state count is cleared. Wherein clearing the second chargeable state count comprises: when the current is less than or equal to a second preset current threshold, clearing the second chargeable state count; when the voltage is less than or equal to the preset voltage threshold, clearing the second chargeable state count; and when the fluctuation amplitude of the current is greater than or equal to the preset current fluctuation amplitude, clearing the second chargeable state count. Counting the second chargeable state, wherein the current is smaller than or equal to the first preset current threshold and larger than the second preset current threshold, the voltage is larger than the preset voltage threshold, and the current fluctuation amplitude is smaller than the duration of the preset current fluctuation amplitude, so that the fourth determining module 6012 determines whether the duration of the electrical parameter of the battery satisfying the charging condition is larger than or equal to the preset time, thereby determining the battery state and further controlling the state transition of the battery. Specifically, the fourth determining module 6012 determines whether the second chargeable state count is greater than or equal to a preset time to determine the battery state. The preset time is 5s, and whether the electrical parameters of the battery in a continuous period of time meet the full charge condition is detected by the third determining module 6011 and the fourth determining module 6012, so that the problem that the battery may not be charged due to high electric quantity can be effectively solved, and the accuracy of judging the state of the battery is further improved.

A first determining module 602, configured to determine that the battery is in a normal charging state when the determining module 601 determines that the duration is greater than or equal to a preset time.

The normal charging state refers to a state where the battery does not have an interference current, for example, when there is no interference such as a reverse charging current, an external charger charges the battery. When the determination module 601 determines that the duration time is greater than or equal to the preset time, that is, the chargeable state count is greater than or equal to the preset time, the first determination module 602 determines that the battery is in a normal charging state, so as to control the battery to enter the charging state, and achieve the purpose of normal use of the battery, thereby avoiding misjudgment, ensuring the stability and reliability of the battery function, and further ensuring the safety of the aircraft flight.

A second determining module 603, configured to determine that the battery is in an abnormal charging state when the determining module 601 determines that the duration is less than the preset time.

The abnormal state of charge refers to a state in which an interference current, such as a reverse charge current, is present in the battery. When the determining module 601 determines that the duration time is less than the preset time, that is, the chargeable state count is less than the preset time, the second determining module 603 determines that the battery is in an abnormal charging state, so as to prohibit the battery from entering the charging state.

It should be noted that, in the embodiment of the present invention, the apparatus 60 for determining a battery state may execute the method for determining a battery state provided in the embodiment of the present invention, and has corresponding functional modules and beneficial effects. For technical details that are not described in detail in the embodiment of the apparatus for determining a battery state 60, reference may be made to the method for determining a battery state provided in the embodiment of the present invention.

Example 4:

the embodiment of the invention is another embodiment of the device for determining the battery state provided by the invention. Fig. 7 is a schematic diagram of an apparatus for determining a battery status according to another embodiment of the present invention. The device 70 for determining the battery status can be used for determining the status of various batteries, such as lithium batteries, etc. The device 70 for determining the battery status may be configured in any suitable type of chip with certain logic operation capability, such as a main control chip configured in the battery.

Referring to fig. 7, the apparatus 70 for determining the battery state includes:

the determining module 701 is configured to determine whether a duration that the electrical parameter of the battery meets the charging condition is greater than or equal to a preset time.

Specifically, the determining module 701 includes: a third determining module 7011, configured to determine whether the electrical parameter meets a charging condition to obtain a determination result, and determine a chargeable state count according to the determination result, where the chargeable state count is used to perform statistics on a duration time that the electrical parameter meets the charging condition; a fourth determining module 7012, configured to determine whether the duration is greater than or equal to a preset time according to the chargeable state count.

Wherein, for the purpose of distinguishing, when aiming at the interference of the reverse charging current, the chargeable state counting is the first chargeable state counting; when the battery is charged with a high electric quantity, the chargeable state count is a second chargeable state count. Moreover, it can be understood that the electrical parameters of the battery need to be acquired before the determination module 701 performs the determination, so as to perform the subsequent determination.

Specifically, for the interference of the reverse charging current, after acquiring the electrical parameter of the battery, the third determining module 7011 is specifically configured to: judging whether the current is larger than a first preset current threshold value or not; if the current is larger than the first preset current threshold, judging whether the current fluctuation amplitude is smaller than a preset current fluctuation amplitude; and if the current fluctuation amplitude is smaller than the preset current fluctuation amplitude, adding one to the first chargeable state count. The first preset current threshold may be 3A, etc. The preset current fluctuation amplitude may be 60 mA. When the third determining module 7011 determines that the electrical parameter satisfies the charging condition, the first chargeable state count is incremented by one; otherwise, the first chargeable state count is cleared. And, the first chargeable state count counts the time during which the current is greater than the first preset current threshold and the current fluctuation amplitude is less than the preset current fluctuation amplitude, so that the fourth determining module 7012 determines whether the time during which the electrical parameter of the battery satisfies the charging condition is greater than or equal to the preset time, thereby determining the state of the battery and further controlling the state transition of the battery. Specifically, the fourth determining module 7012 determines whether the first chargeable state count is greater than or equal to a preset time to determine the battery state. The preset time may be 5s, and whether the electrical parameter of the battery in a continuous period of time meets the full charge condition is detected by the third determining module 7011 and the fourth determining module 7012, so that the condition that the state of the battery is erroneously determined due to the occurrence of an occasional reverse charge current can be effectively avoided.

When the problem that the battery cannot be charged due to high electric quantity is solved, after the electrical parameter of the battery is acquired, the third determining module 7011 is specifically configured to: judging whether the current is larger than a first preset current threshold value or not; if the current is smaller than or equal to the first preset current threshold, judging whether the current is larger than a second preset current threshold; if the current is larger than the second preset current threshold, judging whether the voltage is larger than a preset voltage threshold; if the voltage is larger than a preset voltage threshold value, judging whether the current fluctuation amplitude is smaller than a preset current fluctuation amplitude; and if the fluctuation amplitude of the current is smaller than the preset current fluctuation amplitude, adding one to the second chargeable state count. Wherein the first preset current threshold may take 3A. The second preset current threshold may be set to 100 mA. The preset voltage threshold may be set to 12.9V. The preset current fluctuation amplitude may be 60 mA. When the charging condition is satisfied, the second chargeable state count is increased by one; otherwise, the second chargeable state count is cleared. Wherein clearing the second chargeable state count comprises: when the current is less than or equal to a second preset current threshold, clearing the second chargeable state count; when the voltage is less than or equal to the preset voltage threshold, clearing the second chargeable state count; and when the fluctuation amplitude of the current is greater than or equal to the preset current fluctuation amplitude, clearing the second chargeable state count. The second chargeable state count counts the time during which the current is less than or equal to the first preset current threshold and greater than the second preset current threshold, the voltage is greater than the preset voltage threshold, and the current fluctuation amplitude is less than the preset current fluctuation amplitude, so that the fourth determining module 7012 determines whether the time during which the electrical parameter of the battery satisfies the charging condition is greater than or equal to the preset time, thereby determining the state of the battery, and further controlling the state transition of the battery. Specifically, the fourth determining module 7012 determines whether the second chargeable state count is greater than or equal to a preset time to determine the battery state. The preset time is 5s, and whether the electrical parameters of the battery in a continuous period of time meet the full charge condition is detected by the third determining module 7011 and the fourth determining module 7012, so that the problem that the battery may not be charged due to high electric quantity can be effectively solved, and the accuracy of judging the state of the battery is further improved.

A first determining module 702, configured to determine that the battery is in a normal charging state when the determining module 701 determines that the duration is greater than or equal to a preset time.

The normal charging state refers to a state where the battery does not have an interference current, for example, when there is no interference such as a reverse charging current, an external charger charges the battery. When the determination module 701 determines that the duration time is greater than or equal to the preset time, that is, the chargeable state count is greater than or equal to the preset time, the first determination module 702 determines that the battery is in a normal charging state, so as to control the battery to enter the charging state, and achieve the purpose of normal use of the battery, thereby avoiding misjudgment, ensuring the stability and reliability of the battery function, and further ensuring the safety of the aircraft in flight.

A second determining module 703, configured to determine that the battery is in an abnormal charging state when the determining module 701 determines that the duration is less than the preset time.

The abnormal state of charge refers to a state in which an interference current, such as a reverse charge current, is present in the battery. When the determining module 701 determines that the duration time is less than the preset time, that is, the chargeable state count is less than the preset time, the second determining module 703 determines that the battery is in an abnormal charging state, so as to prohibit the battery from entering the charging state.

A charging module 704 for charging the battery when it is determined that the battery is in a normal charging state.

When the first determination module 702 determines that the battery is in a normal charging state, the charging module 704 may charge the battery. For example, the charging module 704 controls a switch in the charging loop to be closed, so that the charging loop is conducted, and an external charger can charge the battery, thereby ensuring the stability and reliability of the battery function, and further ensuring the safety of the flight of the aircraft.

It should be noted that, in the embodiment of the present invention, the apparatus 70 for determining a battery state may execute the method for determining a battery state provided in the embodiment of the present invention, and has corresponding functional modules and beneficial effects. For technical details that are not described in detail in the embodiment of the apparatus 70 for determining a battery state, reference may be made to the method for determining a battery state provided in the embodiment of the present invention.

Example 5:

fig. 8 is a schematic diagram of a hardware structure of a chip according to an embodiment of the present invention, where the chip may be a main control chip of various smart batteries. As shown in fig. 8, the chip 80 includes:

one or more processors 801 and a memory 802, one processor 801 being illustrated in fig. 8.

The processor 801 and the memory 802 may be connected by a bus or other means, such as by a bus in fig. 8.

The memory 802, which is a non-volatile computer-readable storage medium, may be used for storing non-volatile software programs, non-volatile computer-executable programs, and modules, such as program instructions/modules corresponding to the method for determining the battery status in the embodiment of the present invention (for example, the determining module 701, the first determining module 702, the second determining module 703, and the charging module 704 shown in fig. 7). The processor 801 executes various functional applications of the chip 80 and data processing, i.e., a method of determining a battery state of the method embodiment, by running nonvolatile software programs, instructions, and modules stored in the memory 802.

The memory 802 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 data created according to the use of the chip 80, and the like. Further, the memory 802 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 802 optionally includes memory located remotely from the processor 801, which may be connected to the chip via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The one or more modules are stored in the memory 802, and when executed by the one or more processors 801, perform the method for determining the battery status in any of the method embodiments 1 and/or 2, for example, perform the method steps 501 to 504 in fig. 5 described above, and implement the functions of the module 701 and 704 in fig. 7.

The chip 80 can execute the method for determining the battery state provided by embodiment 1 and/or embodiment 2 of the present invention, and has the corresponding functional modules and beneficial effects of the execution method. For technical details that are not described in detail in the chip embodiment, reference may be made to the method for determining the battery state provided in embodiment 1 and/or embodiment 2 of the present invention.

Embodiments of the present invention provide a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, cause the computer to perform a method of determining a battery state as described above. For example, the above-described method steps 501 to 504 in fig. 5 are executed to implement the functions of the modules 701 and 704 in fig. 7.

Embodiments of the present invention provide a non-transitory computer-readable storage medium storing computer-executable instructions for causing a computer to perform the method for determining a battery status as described above, for example, perform the method steps 501 to 504 in fig. 5 described above, and implement the functions of the modules 701 and 704 in fig. 7.

Example 6:

fig. 9 is a schematic diagram of a battery 90 provided in an embodiment of the present invention, where the battery 90 includes: chip 80 and at least one cell 91 as described above. The battery 90 may be a smart battery, that is, the chip 80 is an Integrated Circuit (IC) protection board with a certain logic control capability. The at least one battery cell 91 is connected with the chip 80, the chip 80 is used for determining the state of the battery 90, and when the chip 80 determines that the battery 90 is in a normal charging state, the battery 90 enters a charging state through the conduction of a charging loop in the control circuit, so that an external charger can charge the battery 90, the functional stability and reliability of the battery 90 are ensured, and the flight safety of an aircraft is further ensured.

Example 7:

fig. 10 is a schematic view of an aircraft provided by an embodiment of the invention, where the aircraft 100 includes: such as the battery 90 described above. The battery 90 is used for providing power, the battery 90 is used for determining the state of the battery 90, and when the battery 90 is determined to be in a normal charging state, the battery 90 enters a charging state, so that an external charger can charge the battery 90, the stability and the reliability of the functions of the battery 90 are ensured, and the flight safety of the aircraft 100 is further ensured.

It should be noted that the above-described device embodiments are merely illustrative, wherein the modules described as separate parts may or may not be physically separate, and the parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.

Through the above description of the embodiments, those skilled in the art will clearly understand that the embodiments may be implemented by software plus a general hardware platform, and may also be implemented by hardware. It will be understood by those skilled in the art that all or part of the processes in the methods for implementing the embodiments may be implemented by hardware associated with computer program instructions, and the programs may be stored in a computer readable storage medium, and when executed, may include processes of the embodiments of the methods as described. The storage medium may be a Read-Only Memory (ROM) or a Random Access Memory (RAM).

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

1. A method of determining a state of a battery, the method comprising:

judging whether the duration of the electrical parameter of the battery meeting the charging condition is longer than or equal to a preset time or not, wherein the electrical parameter of the battery comprises the current and the current fluctuation amplitude of the battery, or comprises the current, the current fluctuation amplitude of the battery and the voltage of the battery;

if so, determining that the battery is in a normal charging state, wherein the normal charging state refers to a state that no interference current exists in the battery;

if not, determining that the battery is in an abnormal charging state, wherein the abnormal charging state refers to a state that the battery has interference current.

2. The method of claim 1, wherein the determining whether the time for which the electrical parameter of the battery satisfies the charging condition is greater than or equal to a preset time comprises:

3. The method of claim 2, wherein the chargeable state count is a first chargeable state count when the electrical parameter of the battery comprises a current of the battery and a current fluctuation amplitude;

4. The method of claim 2, wherein the chargeable state count is a second chargeable state count when the electrical parameters of the battery include a current of the battery, a current fluctuation amplitude, and a voltage of the battery;

5. The method according to any one of claims 1-4, further comprising:

6. An apparatus for determining a state of a battery, the apparatus comprising:

the judging module is used for judging whether the duration of the time that the electrical parameters of the battery meet the charging conditions is longer than or equal to preset time, wherein the electrical parameters of the battery comprise the current and the current fluctuation amplitude of the battery, or comprise the current, the current fluctuation amplitude of the battery and the voltage of the battery;

the first determining module is used for determining that the battery is in a normal charging state when the judging module judges that the duration time is greater than or equal to the preset time, wherein the normal charging state refers to a state that no interference current exists in the battery;

and the second determining module is used for determining that the battery is in an abnormal charging state when the judging module judges that the duration time is less than the preset time, wherein the abnormal charging state refers to a state that the battery has interference current.

7. The apparatus of claim 6, wherein the determining module comprises:

8. The apparatus of claim 7, wherein the chargeable state count is a first chargeable state count when the electrical parameter of the battery comprises a current of the battery and a current fluctuation amplitude;

the third determining module is specifically configured to:

9. The apparatus of claim 7, wherein the chargeable state count is a second chargeable state count when the electrical parameter of the battery includes a current of the battery, a current fluctuation amplitude, and a voltage of the battery;

the third determining module is specifically configured to:

10. The apparatus according to any one of claims 6-9, further comprising:

11. A chip, comprising:

at least one processor; and the number of the first and second groups,

the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-5.

12. A battery comprising the chip of claim 11.

13. An aircraft comprising the battery of claim 12 for providing electrical power.