WO2019192183A1 - Method and apparatus for determining battery state, chip, battery, and aircraft - Google Patents

Abstract

A method and an apparatus (70) for determining battery state, a chip (80), a battery (90), and an aircraft (100), relating to the technical field of batteries. The method for determining battery state comprises: determining whether the duration that electrical parameters of a battery (90) meet a charging condition is greater than or equal to the preset time (S101); if so, then determining that the battery (90) is in a normal charging state (S102); and, if not, then determining that the battery (90) is in an abnormal charging state (S103). The present method for determining battery state can effectively improve the accuracy of determining the battery state.

Description

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

The application claims the priority of the Chinese patent application entitled "Method and Apparatus for Determining Battery Status, Chip, Battery and Aircraft", which is filed on April 3, 2018, with the application number of 201810289571.X, the entire contents of which are hereby incorporated by reference. Combined in this application.

Technical field

Embodiments of the present invention relate to the field of battery technologies, and in particular, to a method and apparatus for determining a state of a battery, a chip, a battery, and an aircraft.

Background technique

The battery is an essential part of the operation of various devices (such as aircraft). In the application process of the battery of the aircraft, there are various operating states, such as a discharge state, a charging state, a power-on state, a shutdown state, and the like. The battery needs to determine the current state of the battery itself, thereby performing a corresponding state transition according to the current state of the battery, such as bringing the battery from the power-on state to the charging state or the discharging state to ensure the normal use of the battery.

In the current technology, the battery for an aircraft generally relies mainly on the direction of charge and discharge of the current to determine the current state of the battery. Specifically, when there is a discharge current, it is determined that the battery is in a normal discharge state; when a charging current exists, it is determined that the battery is in a normal charging state.

However, when the battery is used on an aircraft, the external environment is relatively complicated, and there are many disturbances. At the same time, the direction of charge and discharge of the current during the flight of the aircraft is not determined, so it depends only on the direction of charge and discharge of the current. Directly judging the state of the battery, and then causing the battery to perform the corresponding state jump, many cases are likely to cause misjudgment, resulting in abnormal battery status, and more serious cause of aircraft bomber.

Summary of the invention

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a method and apparatus, chip, battery and aircraft for determining the state of a battery with high accuracy in determining the state of the battery.

The embodiment of the invention discloses the following technical solutions:

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

Determining whether the electrical parameter of the battery satisfies the duration of the charging condition is greater than or equal to a preset time;

If yes, determining that the battery is in a normal state of charge;

If not, it is determined that the battery is in an abnormally charged state.

In some embodiments, the normal state of charge refers to a state in which the battery does not have an interference current; and the abnormal state of charge refers to a state in which the battery has an interference current.

In some embodiments, the electrical parameters of the battery include the current and current fluctuations of the battery.

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

Determining whether the electrical parameter satisfies a charging condition to obtain a determination result, and determining a chargeable state count according to the determination result, wherein the chargeable state count is used to perform statistics on a duration in which the electrical parameter satisfies a charging condition ;

And determining, according to the chargeable state count, whether the duration of the duration is greater than or equal to a preset time.

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

Determining whether the electrical parameter satisfies a charging condition to obtain a determination result, and determining a chargeable state count according to the determination result, including:

Determining whether the current is greater than a first preset current threshold;

If the current is greater than the first preset current threshold, determining whether the current fluctuation amplitude is less than a preset current fluctuation amplitude;

If the current fluctuation amplitude is less than the preset current fluctuation amplitude, the first chargeable state count is incremented by one.

In some embodiments, the electrical parameters of the battery further include the voltage of the battery.

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

Determining whether the electrical parameter satisfies a charging condition to obtain a determination result, and determining a chargeable state count according to the determination result, including:

Determining whether the current is greater than a first preset current threshold;

If the current is less than or equal to the first preset current threshold, determining whether the current is greater than a second preset current threshold;

If the current is greater than the second preset current threshold, determining whether the voltage is greater than a preset voltage threshold;

If the voltage is greater than a preset voltage threshold, determining whether the current fluctuation amplitude is less than a preset current fluctuation amplitude;

If the fluctuation amplitude of the current is less than the preset current fluctuation amplitude, the second chargeable state count is incremented by one.

In some embodiments, the method further includes:

The battery is charged when it is determined that the battery is in a normal state of charge.

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

a determining module, configured to determine whether the electrical parameter of the battery meets a charging condition for a duration greater than or equal to a preset time;

a first determining module, configured to: when the determining module determines that the duration of the duration is greater than or equal to a preset time, determining that the battery is in a normal charging state;

The second determining module is configured to determine that the battery is in an abnormal charging state when the determining module determines that the duration is less than a preset time.

In some embodiments, the normal state of charge refers to a state in which the battery does not have an interference current; and the abnormal state of charge refers to a state in which the battery has an interference current.

In some embodiments, the electrical parameters of the battery include the current and current fluctuations of the battery.

In some embodiments, the determining module comprises:

a third determining module, 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 satisfy the charging of the electrical parameter Statistics on the duration of the condition;

And a fourth determining module, configured to determine, according to the chargeable state count, whether the duration of the duration is greater than or equal to a preset time.

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

The third determining module is specifically configured to:

Determining whether the current is greater than a first preset current threshold;

If the current is greater than the first preset current threshold, determining whether the current fluctuation amplitude is less than a preset current fluctuation amplitude;

If the current fluctuation amplitude is less than the preset current fluctuation amplitude, the first chargeable state count is incremented by one.

In some embodiments, the electrical parameters of the battery further include the voltage of the battery.

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

The third determining module is specifically configured to:

Determining whether the current is greater than a first preset current threshold;

If the current is less than or equal to the first preset current threshold, determining whether the current is greater than a second preset current threshold;

If the current is greater than the second preset current threshold, determining whether the voltage is greater than a preset voltage threshold;

If the voltage is greater than a preset voltage threshold, determining whether the current fluctuation amplitude is less than a preset current fluctuation amplitude;

If the fluctuation amplitude of the current is less than the preset current fluctuation amplitude, the second chargeable state count is incremented by one.

In some embodiments, the apparatus further includes:

And a charging module, configured to charge the battery when the first determining module determines that the battery is in a normal charging state.

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

At least one processor; and,

a memory communicatively coupled to the at least one processor; wherein

The memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform the method of determining a battery state as described above.

In order to solve the above technical problem, an embodiment of the present invention further provides a computer program product, the computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions, when When the program instructions are executed by a computer, the computer is caused to perform the method of determining the state of the battery as described above.

In order 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 of determining the state of the battery 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 above technical problem, an embodiment of the present invention further provides an aircraft comprising the battery as described above, the battery being used for providing electric power.

Since the battery state is directly determined by the charge and discharge direction of the current, the erroneous determination is easy to occur. In the embodiment of the present invention, it is effective to determine whether the battery condition is greater than or equal to the preset time according to the electrical parameter of the battery. Prevent misjudgment and improve the accuracy of judging the state of the battery, thereby ensuring the stability and reliability of the battery function, thereby ensuring the safety of the aircraft flying using the battery.

DRAWINGS

The one or more embodiments are exemplified by the accompanying drawings in the accompanying drawings, and FIG. The figures in the drawings do not constitute a scale limitation unless otherwise stated.

1 is a schematic flow chart of a method for determining a battery state according to one embodiment of the present invention;

2 is a schematic diagram of a current waveform obtained by performing a limit test on a current of a single motor of an aircraft according to an embodiment of the present invention;

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

4 is a schematic diagram of an overall process for determining a battery state according to an embodiment of the present invention;

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

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

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

8 is a schematic structural diagram of a hardware of a chip according to an embodiment of the present invention;

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

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

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

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

The embodiments of the present invention are further described below in conjunction with the accompanying drawings.

Example 1:

An embodiment of the present invention provides an embodiment of a method for determining a state of a battery provided by the present invention. FIG. 1 is a schematic flowchart diagram of a method for determining a state of a battery according to an embodiment of the present invention. The method of determining the state of the battery can be used to determine the status of various batteries, such as a lithium battery or the like. The battery can be applied to various devices including the battery, for example, to an aircraft, an electric vehicle, or the like. The following description of the invention uses an aircraft as an example of a device incorporating the battery. The method of determining the state of the battery may be performed by any suitable type of chip having a certain logic operation capability capable of realizing the function of determining the state of the battery, such as a main control chip of the battery. The following takes the main control chip of the battery as an example for specific description.

Referring to FIG. 1, the method for determining a battery state includes:

101: Determine whether the electrical parameter of the battery meets a charging condition for a time greater than or equal to a preset time.

The electrical parameters of the battery include, but are not limited to, the current of the battery, the amplitude of the current fluctuation, and the voltage of the battery.

For an aircraft that needs to rely on the battery to provide power for it, the battery can accurately determine the state of the battery itself is the key to ensure the normal operation of the aircraft. At present, it is usually dependent on the charge and discharge direction of the current to judge the battery state of the aircraft, and there is a high risk of misjudgment by this method. For example, as shown in FIG. 2, a schematic diagram of a current waveform obtained by performing a limit test on the current of a single motor of an aircraft. It can be seen from Fig. 2 that in the fast switching of the full throttle positive push and the full throttle reverse push, a large reverse charging flow occurs, as shown in Fig. 2, the reverse charging current is -4.1A, and the duration is about 0.171s. Wherein, the negative charging current in the -4.1A minus sign indicates that the reverse charging current is opposite to the discharging current. Although the anti-charge current lasts for a short time, it can be seen from the figure that if the motor is in the process of decelerating the reverse thrust, there will be a reverse charging current, in which case the overall current becomes due to this reverse charging current. After the charging direction is also the charging current, if the battery just samples such a current, according to the normal judgment logic of the battery control chip, it will judge that the battery is in the charging state, and then control the battery to enter the charging state, and with this counter charging current When it disappears, the battery will go into a shutdown state, which will lead to aircraft bombing and so on.

Therefore, in order to avoid misjudgment caused by the state of charge and discharge of the current to determine the state of the battery of the aircraft, the embodiment of the present invention 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. To determine the battery status, that is, to determine the battery is in a normal state of charge or abnormal charging state, in order to improve the accuracy of the state of the battery, to avoid false positives, thereby ensuring the stability and reliability of the battery function, thereby ensuring the safety of aircraft flight .

Specifically, the determining whether the electrical parameter of the battery meets the charging condition is greater than or equal to the preset time includes: determining whether the electrical parameter meets a charging condition, to obtain a determination result, and according to the determination result Determining a chargeable state count, wherein the chargeable state count is used to count a duration of the electrical parameter that satisfies the charging condition; and determining, according to the chargeable state count, whether the duration of the duration is greater than or equal to a preset time.

Further, considering that the time of the general reverse charging current is short and the fluctuation is large, in the embodiment of the present invention, the charging condition can be detected by relying on the magnitude of the current and the amplitude of the current fluctuation as charging conditions. The way of time to avoid false positives due to the presence of disturbing currents such as anti-charge current. Specifically, the charging condition may be that the current is greater than the first preset current threshold, and the current fluctuation amplitude is less than the preset current fluctuation amplitude.

In the above manner, the misjudgment caused by the occurrence of the reverse charging current can be effectively avoided, but the above method does not consider the case where the battery is very high, that is, the problem that the battery cannot be charged when the battery is high in the above manner may be generated. . For example, as shown in FIG. 3, a schematic diagram of a variation curve of a charging current during battery charging, as can be seen from FIG. 3, when the battery is high in power, the voltage of the battery and the voltage of the charger that supplies power thereto are very high. Approaching, at this time, the charging current will gradually decrease as the battery is about to be fully charged. As shown in Figure 3, the charging current is gradually reduced from 4.3A to about 300mA, so if the battery is at a very high level, the charger is connected. Charging, it is likely that the current will be less than the first preset current threshold. In this case, if the current is greater than the first preset current threshold, and the current fluctuation amplitude is less than the preset current fluctuation amplitude for the charging condition, the battery will be high. The problem that the battery cannot be charged. Therefore, by relying on the magnitude of the current, the amplitude of the current fluctuation, and the magnitude of the voltage as charging conditions, and detecting the time during which the charging condition is satisfied, the problem that the high battery power may not be charged is solved, and the accuracy of determining the state of the battery is further improved.

That is to say, through the cooperation of the above two modes, under the premise of ensuring that the normal charger is connected, the battery can enter the charging state, avoiding possible interference current as much as possible, reducing false positives, and ensuring stable and reliable battery function. .

Specifically, a flowchart for judging the cooperation of the above two methods is shown in FIG. 4 . Wherein, in order to distinguish, for the interference of the reverse charging current, the chargeable state count described above is the first chargeable state count; when the battery is not charged, the chargeable state count is The second chargeable state counts. Moreover, it can be understood that before the judgment is made, the main control chip of the battery needs to obtain the electrical parameters of the battery first for subsequent judgment.

After the electrical parameters of the battery are acquired, determining whether the electrical parameter meets the charging condition to obtain a determination result, and determining a chargeable state count according to the determination result, including: determining the Whether the current is greater than the first preset current threshold; if the current is greater than the first preset current threshold, determining whether the current fluctuation amplitude is less than a preset current fluctuation amplitude; if the current fluctuation amplitude is less than the preset current The amplitude of the fluctuation increases the first chargeable state count by one. The first preset current threshold may be a value set by a user, or may be a value determined according to an adapter charging current. Generally, the adapter charging current is 4.3A, so the first preset current threshold may be set to 3A and so on. The preset current fluctuation amplitude may be a value set by a user, or may be a maximum amplitude of a normal current fluctuation that is pre-tested according to actual conditions. For example, the amplitude of the current fluctuation does not exceed 60 mA, so the preset current fluctuation range Can be 60mA. When the above charging condition is satisfied, the first chargeable state count is incremented by one; otherwise, the first chargeable state count is cleared. And determining, by the first chargeable state, that the current is greater than the first preset current threshold and the current fluctuation amplitude is less than a duration of the preset current fluctuation amplitude, to determine that the electrical parameter of the battery meets the charging condition Whether the duration is greater than or equal to the preset time to determine the battery state, thereby controlling the state transition of the battery. Specifically, it is determined whether the first chargeable state count is greater than or equal to a preset time to determine a battery state. The preset time may be a value set by the user, and if the preset time is 5 s, by detecting whether the electrical parameters of the battery in a continuous period of time meet the full charge condition, the time may be effectively avoided. The occurrence of a charging current causes a misjudgment of the state of the battery.

When the battery is not charged, after determining the electrical parameters of the battery, the determining whether the electrical parameter satisfies the charging condition to obtain a determination result, and determining the chargeable state count according to the determination result, including Determining whether the current is greater than a first preset current threshold; if the current is less than or equal to the first preset current threshold, determining whether the current is greater than a second preset current threshold; if the current is greater than the a second preset current threshold, determining whether the voltage is greater than a preset voltage threshold; if the voltage is greater than a preset voltage threshold, determining whether the current fluctuation amplitude is less than a preset current fluctuation amplitude; if the current fluctuation amplitude is less than The preset current fluctuation amplitude increases the second chargeable state count by one. The first preset current threshold is similar to the above setting manner, that is, the first preset current threshold may be 3A. The second preset current threshold may be a user-defined value, or may be determined as a minimum value of the charging current pre-tested according to actual conditions. For example, the minimum charging current is generally not less than 200 mA, considering that other influencing factors may exist. Conservative data is taken at the current value, that is, the second preset current threshold is slightly smaller than the minimum value; and, considering that the existing battery fuel gauge is subject to external strong magnetic environment interference, that is, the fuel gauge is in strong magnetic interference. In this case, it is possible to generate a current reading of up to 50 mA, so the second preset current threshold can be set to 100 mA. The preset voltage threshold may be a value set by a user, or may be 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 other effects may be considered. Factor, taking conservative data at the voltage value, that is, the preset voltage threshold can be set to 12.9V. The preset current fluctuation amplitude is similar to the manner of determining the preset current fluctuation amplitude, that is, the preset current fluctuation amplitude may be 60 mA. When the above charging condition is satisfied, the second chargeable state count is incremented by one; otherwise, the second chargeable state count is cleared. The second chargeable state count clearing includes the following situation: when the current is less than or equal to the second preset current threshold, the second chargeable state count is cleared; when the voltage is less than or equal to the preset voltage threshold, the second chargeable state The count is cleared; when the fluctuation amplitude of the current is greater than or equal to the preset current fluctuation amplitude, the second chargeable state count is cleared. The second chargeable state counts that the current is less than or equal to the first preset current threshold and greater than a second preset current threshold, the voltage is greater than a preset voltage threshold, and the current fluctuation amplitude is less than a preset current fluctuation amplitude The continuous time is used to determine whether the electrical parameter of the battery meets the charging condition for a time greater than or equal to the preset time, thereby determining the battery state, thereby controlling the state transition of the battery. Specifically, it is determined whether the second chargeable state count is greater than or equal to a preset time to determine a battery state. The preset time may be a value set by the user, and if the preset time is 5 s, the battery can be effectively solved by detecting whether the electrical parameters of the battery in a continuous period of time meet the full charge condition. The problem that may not be charged further improves the accuracy of determining the state of the battery.

It should be noted that, in this embodiment, the first preset current threshold is 3A, the second preset current threshold is 100mA, the preset voltage threshold is 12.9V, the preset current fluctuation amplitude is 60mA, and the preset time is 5s. The specific reference to the parameters is for illustrative purposes and is not to be construed as limiting.

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

The normal charging state refers to a state in which the battery does not have an interference current. For example, when there is no interference such as a reverse charging current, the external charger charges the battery. When the duration of the duration is greater than or equal to the preset time, that is, when the chargeable state count is greater than or equal to the preset time, the master chip of the battery determines that the battery is in a normal state of charge, thereby controlling the battery to enter. In the state of charge, the battery can be used normally, thereby avoiding misjudgment, ensuring the stability and reliability of the battery function, and thus ensuring the safety of the aircraft flight.

103: Determine that the battery is in an abnormal charging state when the duration is less than a preset time.

The abnormal charging state refers to a state in which the battery has an interference current, for example, a state of interference such as a reverse charging current. When the duration is less than the preset time, that is, when 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 prohibits the battery from entering the charging state.

It should be noted that, according to the description of the embodiments of the present invention, those skilled in the art may understand that, in different embodiments, the steps 101-103 may have different execution orders, such as the described. Step 102 and the step 103 are performed simultaneously.

The embodiment of the invention determines whether the state of the battery is greater than or equal to the preset time according to the electrical parameter of the battery, and can determine the state of the battery effectively, can effectively prevent misjudgment, improve the accuracy of determining the state of the battery, thereby ensuring the stability of the battery function. Sex and reliability, which in turn ensures the safety of aircraft flying with this battery.

Example 2:

An embodiment of the present invention provides another embodiment of a method for determining a state of a battery provided by the present invention. FIG. 5 is a schematic flowchart diagram of a method for determining a state of a battery according to another embodiment of the present invention. The method of determining the state of the battery can be used to determine the status of various batteries, such as a lithium battery or the like. The battery can be applied to various devices including the battery, for example, to an aircraft, an electric vehicle, or the like. The following description of the invention uses an aircraft as an example of a device incorporating the battery. The method of determining the state of the battery may be performed by any suitable type of chip having a certain logic operation capability capable of realizing the function of determining the state of the battery, such as a main control chip of the battery. The following takes the main control chip of the battery as an example for specific description.

Referring to FIG. 5, the method for determining a battery state includes:

501: Determine whether the electrical parameter of the battery meets a charging condition for a duration greater than or equal to a preset time.

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

503: When the duration is less than a preset time, determine 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 foregoing embodiment, and the technical details not described in the steps 501-503 in the embodiment of the present invention may refer to the foregoing implementation. The specific description of steps 101-103 in the example, therefore, will not be repeated here.

504: Charge the battery when it is determined that the battery is in a normal state of charge.

When the battery's master chip determines that the battery is in a normal state of charge, the battery can be charged. For example, the main control chip of the battery is closed by controlling the switch in the charging circuit to make the charging circuit conduct so that the external charger can charge the battery, thereby ensuring the stability and reliability of the battery function, thereby ensuring flight of the aircraft. Security.

It should be noted that, according to the description of the embodiments of the present invention, those skilled in the art may understand that, in different embodiments, the steps 501-504 may have different execution orders, such as the described. Step 502 and the step 503 are performed simultaneously.

The embodiment of the invention determines whether the state of the battery is greater than or equal to the preset time according to the electrical parameter of the battery, and can determine the state of the battery effectively, can effectively prevent misjudgment, improve the accuracy of determining the state of the battery, thereby ensuring the stability of the battery function. Sex and reliability, which in turn ensures the safety of aircraft flying with this battery.

Example 3:

An embodiment of the present invention provides an embodiment of an apparatus for determining a state of a battery provided by the present invention. FIG. 6 is a schematic diagram of an apparatus for determining a state of a battery according to an embodiment of the present invention. Wherein, the means 60 for determining the state of the battery can be used to determine the status of various batteries, such as a lithium battery or the like. The device 60 for determining the state of the battery may be configured in any suitable type of chip having a certain logic operation capability, such as a master chip disposed in the battery.

Referring to Figure 6, the means 60 for determining the state of the battery includes:

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

The electrical parameters of the battery include, but are not limited to, the current of the battery, the amplitude of the current fluctuation, and the voltage of the battery.

In order to avoid misjudgment caused by using the charging and discharging direction of the current to judge the state of the battery of the aircraft, the determining module 601 determines the battery according to whether the electrical parameter of the battery satisfies whether the charging condition lasts for more than or equal to the preset time. The state, that is, the battery is in a normal charging state or an abnormal charging state, to improve the accuracy of determining the state of the battery, to avoid misjudgment, thereby ensuring the stability and reliability of the battery function, thereby ensuring the safety of the aircraft flight.

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, the chargeable The state count is used to count the duration of the charging of the electrical parameter to meet the charging condition. The fourth determining module 6012 is configured to determine whether the duration of the duration is greater than or equal to the preset time according to the chargeable state count.

Further, considering that the time of the general reverse charging current is short and the fluctuation is large, the determining module 601 can detect the duration of the charging condition by relying on the magnitude of the current and the amplitude of the current fluctuation as charging conditions. The way to avoid false positives due to the presence of disturbing currents such as anti-charge current. Specifically, the charging condition may be that the current is greater than the first preset current threshold, and the current fluctuation amplitude is less than the preset current fluctuation amplitude.

The judging module 601 can effectively avoid the misjudgment caused by the occurrence of the reverse charging flow in the above manner, but the above method does not consider the case where the battery is high in power, that is, the battery may not be charged when the battery is high in the above manner. Charging problem. Therefore, the judging module 601 can solve the problem that the battery may not be charged due to the magnitude of the current, the amplitude of the current fluctuation, and the magnitude of the voltage as the charging condition, and detecting the duration of the charging condition, thereby further improving the state of the battery. The accuracy.

That is to say, through the cooperation of the above two modes, under the premise of ensuring that the normal charger is connected, the battery can enter the charging state, avoiding possible interference current as much as possible, reducing false positives, and ensuring stable and reliable battery function. .

Wherein, in order to distinguish, for the interference of the reverse charging current, the chargeable state count described above is the first chargeable state count; when the battery is not charged, the chargeable state count is The second chargeable state counts. Moreover, it can be understood that the electrical parameters of the battery need to be obtained before the determination module 601 performs the determination to perform subsequent determination.

Specifically, after the electrical parameters of the battery are acquired, the third determining module 6011 is specifically configured to: determine whether the current is greater than a first preset current threshold; if the current is greater than the first a preset current threshold is used to determine whether the current fluctuation amplitude is less than a preset current fluctuation amplitude; if the current fluctuation amplitude is less than the preset current fluctuation amplitude, the first chargeable state count is incremented by one. The first preset current threshold may be 3A or the like. 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 counts the time that 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 the electrical properties of the battery. Whether the parameter satisfies the charging condition for a time greater than or equal to the preset time, thereby determining the battery state, thereby 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 a battery state. The preset time may be 5 s. The third determining module 6011 and the fourth determining module 6012 detect whether the electrical parameters of the battery in a continuous period of time meet the full charging condition, and can effectively avoid the occasional reverse charging flow. There is a case where a misjudgment of the state of the battery occurs.

The third determining module 6011 is specifically configured to: determine whether the current is greater than a first preset current threshold, if the current is less than or equal to Determining, by the first preset current threshold, whether the current is greater than a second preset current threshold; if the current is greater than the second preset current threshold, determining whether the voltage is greater than a preset voltage threshold; The voltage is greater than the preset voltage threshold, and the current fluctuation amplitude is determined to be less than the preset current fluctuation amplitude; if the current fluctuation amplitude is less than the preset current fluctuation amplitude, the second chargeable state count is incremented by one. The first preset current threshold may be 3A. The second preset current threshold can be set to 100 mA. The preset voltage threshold can be set to 12.9V. The preset current fluctuation amplitude may be 60 mA. When the above charging condition is satisfied, the second chargeable state count is incremented by one; otherwise, the second chargeable state count is cleared. The second chargeable state count clearing includes the following situation: when the current is less than or equal to the second preset current threshold, the second chargeable state count is cleared; when the voltage is less than or equal to the preset voltage threshold, the second chargeable state The count is cleared; when the fluctuation amplitude of the current is greater than or equal to the preset current fluctuation amplitude, the second chargeable state count is cleared. The second chargeable state counts that the current is less than or equal to the first preset current threshold and greater than a second preset current threshold, the voltage is greater than a preset voltage threshold, and the current fluctuation amplitude is less than a preset current fluctuation amplitude The duration is such that the fourth determining module 6012 determines whether the electrical parameter of the battery satisfies the duration of the charging condition is greater than or equal to the preset time, thereby determining the battery state, thereby 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 a battery state. The preset time is 5s, and the third determining module 6011 and the fourth determining module 6012 detect whether the electrical parameters of the battery in a continuous period of time meet the full charging condition, and can effectively solve the problem that the battery may not be charged due to high battery power. The problem is to further improve the accuracy of determining the state of the battery.

It should be noted that, in this embodiment, the first preset current threshold is 3A, the second preset current threshold is 100mA, the preset voltage threshold is 12.9V, the preset current fluctuation amplitude is 60mA, and the preset time is 5s. The specific reference to the parameters is for illustrative purposes and is not to be construed as limiting.

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

The normal charging state refers to a state in which the battery does not have an interference current. For example, when there is no interference such as a reverse charging current, the external charger charges the battery. When the determining module 601 determines that the duration 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 determining module 602 determines that the battery is in a normal charging state. In order to control the battery to enter the charging state, the battery can be used normally, thereby avoiding misjudgment, ensuring the stability and reliability of the battery function, thereby ensuring the safety of the aircraft flight.

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

The abnormal charging state refers to a state in which the battery has an interference current, for example, a state of interference such as a reverse charging current. When the determining module 601 determines that the duration 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. Enter the charging state.

It should be noted that, in the embodiment of the present invention, the device 60 for determining the state of the battery may perform the method for determining the state of the battery provided by the embodiment of the present invention, and has a function module and a beneficial effect corresponding to the execution method. For a technical detail that is not described in detail in the embodiment of the apparatus 60 for determining the state of the battery, reference may be made to the method of determining the state of the battery provided by embodiments of the present invention.

Example 4:

An embodiment of the present invention provides another embodiment of an apparatus for determining a state of a battery provided by the present invention. FIG. 7 is a schematic diagram of an apparatus for determining a state of a battery according to another embodiment of the present invention. Wherein, the device 70 for determining the state of the battery can be used to determine the state of various batteries, such as a lithium battery or the like. The device 70 for determining the state of the battery may be configured in any suitable type of chip having a certain logic operation capability, such as a master chip disposed in a battery.

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

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

The electrical parameters of the battery include, but are not limited to, the current of the battery, the amplitude of the current fluctuation, and the voltage of the battery.

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, the chargeable The state count is used to count the duration of the charging of the electrical parameter. The fourth determining module 7012 is configured to determine, according to the chargeable state, whether the duration is greater than or equal to a preset time.

Wherein, in order to distinguish, for the interference of the reverse charging current, the chargeable state count described above is the first chargeable state count; when the battery is not charged, the chargeable state count is The second chargeable state counts. Moreover, it can be understood that the electrical parameters of the battery need to be obtained before the judging module 701 performs the judgment to perform subsequent judgment.

Specifically, after the electrical parameters of the battery are acquired, the third determining module 7011 is specifically configured to: determine whether the current is greater than a first preset current threshold; if the current is greater than the first a preset current threshold is used to determine whether the current fluctuation amplitude is less than a preset current fluctuation amplitude; if the current fluctuation amplitude is less than the preset current fluctuation amplitude, the first chargeable state count is incremented by one. The first preset current threshold may be 3A or the like. 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 counts the time that 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 the electrical properties of the battery. Whether the parameter satisfies the charging condition for a time greater than or equal to the preset time, thereby determining the battery state, thereby 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 a battery state. The preset time may be 5 s. The third determining module 7011 and the fourth determining module 7012 detect whether the electrical parameters of the battery in a continuous period of time meet the full charging condition, and can effectively avoid the occasional reverse charging flow. There is a case where a misjudgment of the state of the battery occurs.

The third determining module 7011 is specifically configured to: determine whether the current is greater than a first preset current threshold, if the current is less than or equal to Determining, by the first preset current threshold, whether the current is greater than a second preset current threshold; if the current is greater than the second preset current threshold, determining whether the voltage is greater than a preset voltage threshold; The voltage is greater than the preset voltage threshold, and the current fluctuation amplitude is determined to be less than the preset current fluctuation amplitude; if the current fluctuation amplitude is less than the preset current fluctuation amplitude, the second chargeable state count is incremented by one. The first preset current threshold may be 3A. The second preset current threshold can be set to 100 mA. The preset voltage threshold can be set to 12.9V. The preset current fluctuation amplitude may be 60 mA. When the above charging condition is satisfied, the second chargeable state count is incremented by one; otherwise, the second chargeable state count is cleared. The second chargeable state count clearing includes the following situation: when the current is less than or equal to the second preset current threshold, the second chargeable state count is cleared; when the voltage is less than or equal to the preset voltage threshold, the second chargeable state The count is cleared; when the fluctuation amplitude of the current is greater than or equal to the preset current fluctuation amplitude, the second chargeable state count is cleared. The second chargeable state counts that the current is less than or equal to the first preset current threshold and greater than a second preset current threshold, the voltage is greater than a preset voltage threshold, and the current fluctuation amplitude is less than a preset current fluctuation amplitude The duration is such that the fourth determining module 7012 determines whether the electrical parameter of the battery satisfies the duration of the charging condition is greater than or equal to the preset time, thereby determining the battery state, thereby 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 a battery state. The preset time is 5s, and the third determining module 7011 and the fourth determining module 7012 detect whether the electrical parameters of the battery in a continuous period of time meet the full charging condition, and can effectively solve the problem that the battery may not be charged due to high battery power. The problem is to further improve the accuracy of determining the state of the battery.

It should be noted that, in this embodiment, the first preset current threshold is 3A, the second preset current threshold is 100mA, the preset voltage threshold is 12.9V, the preset current fluctuation amplitude is 60mA, and the preset time is 5s. The specific reference to the parameters is for illustrative purposes and is not to be construed as limiting.

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

The normal charging state refers to a state in which the battery does not have an interference current. For example, when there is no interference such as a reverse charging current, the external charger charges the battery. When the determining module 701 determines that the duration 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 determining module 702 determines that the battery is in a normal charging state. In order to control the battery to enter the charging state, the battery can be used normally, thereby avoiding misjudgment, ensuring the stability and reliability of the battery function, thereby ensuring the safety of the aircraft flight.

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

The abnormal charging state refers to a state in which the battery has an interference current, for example, a state of interference such as a reverse charging current. When the determining module 701 determines that the duration 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. Enter the charging state.

The charging module 704 is configured to charge the battery when it is determined that the battery is in a normal charging state.

When the first determining module 702 determines that the battery is in a normal state of charge, the charging module 704 can charge the battery. For example, the charging module 704 is closed by controlling the switch in the charging circuit to turn on the charging circuit so that the external charger can charge the battery, thereby ensuring the stability and reliability of the battery function, thereby ensuring the safety of the aircraft flight. Sex.

It should be noted that, in the embodiment of the present invention, the device 70 for determining the state of the battery may perform the method for determining the state of the battery provided by the embodiment of the present invention, and has a function module and a beneficial effect corresponding to the execution method. For a technical detail that is not described in detail in the embodiment of apparatus 70 for determining battery status, reference may be made to a method of determining battery status as provided by embodiments of the present invention.

Example 5:

FIG. 8 is a schematic structural diagram of a chip hardware according to an embodiment of the present invention, wherein 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 memory 802, one processor 801 is taken as an example in FIG.

The processor 801 and the memory 802 may be connected by a bus or other means, and the bus connection is taken as an example in FIG.

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

The memory 802 may include a storage program area and an storage data area, wherein the storage program area may store an operating system, an application 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. In addition, memory 802 can include high speed random access memory and can 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, memory 802 can optionally include memory remotely located relative to processor 801, which can be connected to the chip over a network. Embodiments of the network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

The one or more modules are stored in the memory 802, and when executed by the one or more processors 801, the method of determining the battery state in any of the method embodiments 1 and/or 2 is performed For example, performing the method steps 501 through 504 of FIG. 5 described above to implement the functions of the modules 701-704 of FIG.

The chip 80 can perform the method for determining the state of the battery provided by the embodiment 1 and/or the embodiment 2 of the present invention, and has the corresponding functional modules and beneficial effects of the execution method. For a technical detail not described in detail in the chip embodiment, reference may be made to the method of determining the state of the battery provided by 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, when the program instructions are executed by a computer The computer is caused to perform the method of determining the state of the battery as described above. For example, performing the method steps 501 through 504 of FIG. 5 described above, the functions of the modules 701-704 of FIG. 7 are implemented.

Embodiments of the present invention provide a non-transitory computer readable storage medium storing computer-executable instructions for causing a computer to perform a determination of a battery state as described above The method, for example, performs the method steps 501 through 504 of FIG. 5 described above to implement the functions of the modules 701-704 of FIG.

Example 6

FIG. 9 is a schematic diagram of a battery provided by an embodiment of the present invention. The battery 90 includes: a chip 80 and at least one battery core 91 as described above. The battery 90 can be a smart battery, that is, the chip 80 is an integrated circuit (IC) protection board with certain logic control capabilities. The at least one battery core 91 is connected to the chip 80, and the chip 80 is used to determine the state of the battery 90, and when the chip 80 determines that the battery 90 is in a normal state of charge, passes through the control circuit. The charging circuit is turned on to bring the battery 90 into a state of charge, so that the external charger can charge the battery 90, thereby ensuring the stability and reliability of the function of the battery 90, thereby ensuring the safety of the flight of the aircraft.

Example 7

FIG. 10 is a schematic diagram of an aircraft provided by an embodiment of the present invention, the aircraft 100 including: a battery 90 as described above. The battery 90 is used to provide power, the battery 90 is used to determine its own state, and it is determined that when it is in a normal state of charge, the battery 90 enters a state of charge so that an external charger can charge the battery 90, thereby ensuring The stability and reliability of the function of the battery 90, in turn, ensures the safety of the flight of the aircraft 100.

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

Through the description of the above embodiments, those skilled in the art can clearly understand that the embodiments can be implemented by means of software plus a general hardware platform, and of course, by hardware. One of ordinary skill in the art can understand that all or part of the process of implementing the embodiment method can be completed by computer program related hardware, the program can be stored in a computer readable storage medium, and the program is executed. The flow of an embodiment of the methods as described may be included. The storage medium may be a read-only memory (ROM) or a random access memory (RAM).

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not limited thereto; in the idea of the present invention, the technical features in the above embodiments or different embodiments may also be combined. The steps may be carried out in any order, and there are many other variations of the various aspects of the invention as described above, which are not provided in the details for the sake of brevity; although the invention has been described in detail with reference to the foregoing embodiments, It should be understood by those skilled in the art that the technical solutions described in the foregoing embodiments may be modified or equivalently substituted for some of the technical features; and the modifications or substitutions do not deviate from the embodiments of the present invention. The scope of the technical solution.

Claims (19)

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

   Determining whether the electrical parameter of the battery satisfies the duration of the charging condition is greater than or equal to a preset time;

   If yes, determining that the battery is in a normal state of charge;

   If not, it is determined that the battery is in an abnormally charged state.
2. The method according to claim 1, wherein the normal state of charge refers to a state in which the battery does not have an interference current; and the abnormal state of charge refers to a state in which the battery has an interference current.
3. The method of claim 1 wherein the electrical parameters of the battery comprise current and current fluctuations of the battery.
4. The method according to claim 3, wherein the determining whether the electrical parameter of the battery satisfies the duration of the charging condition is greater than or equal to a preset time comprises:

   Determining whether the electrical parameter satisfies a charging condition to obtain a determination result, and determining a chargeable state count according to the determination result, wherein the chargeable state count is used to perform statistics on a duration in which the electrical parameter satisfies a charging condition ;

   And determining, according to the chargeable state count, whether the duration of the duration is greater than or equal to a preset time.
5. The method of claim 4 wherein said chargeable state count is a first chargeable state count;

   Determining whether the electrical parameter satisfies a charging condition to obtain a determination result, and determining a chargeable state count according to the determination result, including:

   Determining whether the current is greater than a first preset current threshold;

   If the current is greater than the first preset current threshold, determining whether the current fluctuation amplitude is less than a preset current fluctuation amplitude;

   If the current fluctuation amplitude is less than the preset current fluctuation amplitude, the first chargeable state count is incremented by one.
6. The method of claim 3 wherein the electrical parameters of the battery further comprise a voltage of the battery.
7. The method of claim 6 wherein said chargeable state count is a second chargeable state count;

   Determining whether the electrical parameter satisfies a charging condition to obtain a determination result, and determining a chargeable state count according to the determination result, including:

   Determining whether the current is greater than a first preset current threshold;

   If the current is less than or equal to the first preset current threshold, determining whether the current is greater than a second preset current threshold;

   If the current is greater than the second preset current threshold, determining whether the voltage is greater than a preset voltage threshold;

   If the voltage is greater than a preset voltage threshold, determining whether the current fluctuation amplitude is less than a preset current fluctuation amplitude;

   If the fluctuation amplitude of the current is less than the preset current fluctuation amplitude, the second chargeable state count is incremented by one.
8. The method according to any one of claims 1 to 7, wherein the method further comprises:

   The battery is charged when it is determined that the battery is in a normal state of charge.
9. A device for determining a state of a battery, characterized in that the device comprises:

   a determining module, configured to determine whether the electrical parameter of the battery meets a charging condition for a duration greater than or equal to a preset time;

   a first determining module, configured to: when the determining module determines that the duration of the duration is greater than or equal to a preset time, determining that the battery is in a normal charging state;

   The second determining module is configured to determine that the battery is in an abnormal charging state when the determining module determines that the duration is less than a preset time.
10. The apparatus according to claim 9, wherein said normal state of charge refers to a state in which said battery does not have an interference current; and said abnormal state of charge refers to a state in which said battery has an interference current.
11. The apparatus of claim 9 wherein the electrical parameters of the battery comprise current and current fluctuations of the battery.
12. The device according to claim 11, wherein the determining module comprises:

    a third determining module, 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 satisfy the charging of the electrical parameter Statistics on the duration of the condition;

    And a fourth determining module, configured to determine, according to the chargeable state count, whether the duration of the duration is greater than or equal to a preset time.
13. The apparatus according to claim 12, wherein said chargeable state count is a first chargeable state count;

    The third determining module is specifically configured to:

    Determining whether the current is greater than a first preset current threshold;

    If the current is greater than the first preset current threshold, determining whether the current fluctuation amplitude is less than a preset current fluctuation amplitude;

    If the current fluctuation amplitude is less than the preset current fluctuation amplitude, the first chargeable state count is incremented by one.
14. The device of claim 12 wherein the electrical parameter of the battery further comprises a voltage of the battery.
15. The apparatus according to claim 14, wherein said chargeable state count is a second chargeable state count;

    The third determining module is specifically configured to:

    Determining whether the current is greater than a first preset current threshold;

    If the current is less than or equal to the first preset current threshold, determining whether the current is greater than a second preset current threshold;

    If the current is greater than the second preset current threshold, determining whether the voltage is greater than a preset voltage threshold;

    If the voltage is greater than a preset voltage threshold, determining whether the current fluctuation amplitude is less than a preset current fluctuation amplitude;

    If the fluctuation amplitude of the current is less than the preset current fluctuation amplitude, the second chargeable state count is incremented by one.
16. The device according to any one of claims 9 to 15, wherein the device further comprises:

    And a charging module, configured to charge the battery when the first determining module determines that the battery is in a normal charging state.
17. A chip characterized by comprising:

    At least one processor; and,

    a memory communicatively coupled to the at least one processor; wherein

    The memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform the method of any of claims 1-8 method.
18. A battery comprising the chip of claim 17.
19. An aircraft characterized by comprising the battery of claim 18 for providing electrical power.

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