CN212343376U

CN212343376U - Battery management circuit and movable platform

Info

Publication number: CN212343376U
Application number: CN202021248190.6U
Authority: CN
Inventors: 刘强; 唐阳洋; 张伟鸿
Original assignee: SZ DJI Technology Co Ltd
Current assignee: SZ DJI Technology Co Ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2021-01-12
Anticipated expiration: 2030-06-29

Abstract

A battery management circuit and a movable platform, the battery management circuit (200) comprising: the power protection circuit comprises an electric quantity calculation circuit (210) and a power protection circuit (220) connected with the electric quantity calculation circuit (210); the power protection circuit (220) is used for acquiring the current power bearing capacity of the battery, and if the current power bearing capacity is smaller than the preset power bearing capacity, a first indication signal is output to the electric quantity calculation circuit (210), and the first indication signal is used for indicating that the current residual electric quantity of the battery is temporarily calculated; and the electric quantity calculating circuit (210) is used for calculating the current residual electric quantity of the battery, and if the first indicating signal output by the power protection circuit (220) is received, the calculation of the current residual electric quantity of the battery is suspended according to the first indicating signal. The residual capacity of the battery is prevented from jumping, so that the phenomenon that the movable platform is shut down due to the jumping of the residual capacity is avoided, the normal use of the movable platform is guaranteed, and the user experience is improved.

Description

Battery management circuit and movable platform

Technical Field

The embodiment of the application relates to the technical field of movable platforms, in particular to a battery management circuit and a movable platform.

Background

The cloud platform in the movable platform can carry on load, wherein, the cloud platform can stabilize the gesture of the load of carrying on it, makes load keep its gesture in quiescent condition in moving promptly. In addition, the pan-tilt can also control the movement of the load. Taking the load as an example for the shooting device, after the shooting device is carried on the cloud platform, the cloud platform can stabilize the shooting direction of shooting device to guarantee that the shooting device shoots out steady picture along with the cloud platform in the in-process of motion. The movable platform is powered by a battery, and electric energy output by the battery is used as a power source for movement of the holder. Along with the increase of the service time of the battery, the aging phenomenon of the battery performance can occur, for example, when the cradle head is locked up, the voltage threshold is easily triggered, so that the residual electric quantity of the battery jumps to 0%, the movable platform is shut down, and the use of the movable platform is influenced.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a battery management circuit and a movable platform, which are used for avoiding the phenomenon that the normal use of the movable platform is influenced by the jump of the residual capacity of a battery and prolonging the service life of the movable platform.

In a first aspect, an embodiment of the present application provides a battery management circuit, including: the electric quantity calculating circuit is connected with the power protection circuit;

the power protection circuit is used for acquiring the current power bearing capacity of the battery, and outputting a first indication signal to the electric quantity calculation circuit if the current power bearing capacity is smaller than the preset power bearing capacity, wherein the first indication signal is used for indicating that the current residual electric quantity of the battery is temporarily calculated;

the electric quantity calculating circuit is used for calculating the current residual electric quantity of the battery, and if the first indicating signal output by the power protection circuit is received, the calculation of the current residual electric quantity of the battery is suspended according to the first indicating signal.

The electric quantity calculating circuit suspends calculating the current residual electric quantity of the battery, so that the phenomenon that the residual electric quantity of the battery jumps is avoided, and the situation that the residual electric quantity of the battery suddenly changes to 0% is avoided, so that the current residual electric quantity of the battery is still the residual electric quantity obtained by previous calculation, the phenomenon that the movable platform is shut down due to the jumping of the residual electric quantity is avoided, the normal use of the movable platform is guaranteed, and the user experience is improved.

In one possible implementation, the power protection circuit is further configured to be connected to a motor of the movable platform;

the power protection circuit is further configured to output a second indication signal to the motor if the current power bearing capacity is smaller than a preset power bearing capacity, where the second indication signal is used for indicating reduction of power consumption of the motor.

Because the power consumption of the motor is reduced, and the motor is powered by the battery, after the power consumption of the motor is reduced, the voltage of the battery is restored to a level capable of continuously supplying power to the movable platform, such as a level capable of continuously supplying power to the motor of the movable platform, and a condition for supplying power to the power of the holder of the movable platform. At this time, the electric quantity calculating circuit calculates the residual electric quantity of the battery, and the phenomenon of residual electric quantity jump is avoided, and the phenomenon that the residual electric quantity jump is 0% is avoided. Therefore, the movable platform can be restored to be normally used, for example, the cradle head is restored to be normal in use, the cradle head stalling phenomenon is eliminated, the time for using the movable platform by a user is prolonged, the product safety of the movable platform is protected, and the user experience is improved.

the power protection circuit is used for obtaining working parameters of the motor, and obtaining the current power bearing capacity of the battery if the power consumption of the motor is determined to be larger than the preset power consumption according to the working parameters of the motor.

If the power consumption of the motor is larger than the preset power consumption, it is indicated that the movable platform is in a medium-high power consumption state, and the battery cannot bear the current power consumption possibly, so that the current power bearing capacity of the battery needs to be further acquired to judge whether the current power bearing capacity is smaller than the preset power bearing capacity or not, so that corresponding measures are taken to ensure the continuous use of the movable platform.

In one possible implementation, the power protection circuit includes: the power consumption judging sub-circuit is used for being connected with a motor of the movable platform, and the power protection sub-circuit is used for being connected with the electric quantity calculating circuit;

the power consumption judging sub-circuit is used for acquiring working parameters of the motor and determining whether the power consumption of the motor is greater than preset power consumption according to the working parameters of the motor;

the power bearing capacity calculating sub-circuit is used for acquiring the current power bearing capacity of the battery and determining whether the current power bearing capacity is smaller than the preset power bearing capacity or not if the power consumption judging sub-circuit determines that the power consumption of the motor is larger than the preset power consumption;

the power protection sub-circuit is configured to output a first indication signal to the electric quantity calculation circuit if the power bearing capacity calculation sub-circuit determines that the current power bearing capacity is smaller than a preset power bearing capacity.

Because when the power consumption of the motor is large and the power bearing capacity of the battery is small, the electric quantity calculating circuit suspends calculating the current residual electric quantity of the battery, the phenomenon that the residual electric quantity of the battery jumps is avoided, and the situation that the residual electric quantity of the battery suddenly changes to 0% is avoided, so that the current residual electric quantity of the battery is still the residual electric quantity obtained by previous calculation, the phenomenon that the movable platform is shut down due to the fact that the residual electric quantity jumps is avoided, normal use of the movable platform is guaranteed, and user experience is improved.

In a possible implementation manner, the power bearing capacity calculating sub-circuit is further used for being connected with a voltage acquisition unit of a battery;

and the power bearing capacity calculating sub-circuit is used for acquiring the current voltage of the battery from the voltage acquisition unit of the battery and acquiring the current power bearing capacity of the battery according to the current voltage of the battery.

For example, when the power capacity of the battery is not sufficient to support the movable platform (for example, the handheld cradle head) to work, the voltage (loaded voltage) of the motor may drop, and in a severe case, the voltage may drop below the threshold of the normal working voltage of the motor, so that the present embodiment may accurately estimate the current power capacity of the battery according to the current voltage of the battery.

In one possible implementation, the power protection sub-circuit is further configured to be connected to the motor;

the power protection sub-circuit is further configured to output a second indication signal to the motor if the power bearing capacity calculation sub-circuit determines that the current power bearing capacity is smaller than a preset power bearing capacity, where the second indication signal is used for indicating reduction of power consumption of the motor.

Because the power consumption of the motor is reduced, the battery can be recovered to the level of continuously supplying power to the motor of the movable platform, the movable platform is not shut down, and the service life of the movable platform is prolonged.

In one possible implementation, the power protection circuit is connected to the motor through an electrical regulation of the motor.

The working parameters of the motor can be accurately acquired through electric regulation, and the motor can be accurately indicated to reduce power consumption.

In a possible implementation manner, the electric quantity calculating circuit is further configured to be connected to a voltage collecting unit and a current collecting unit of the battery;

the electric quantity calculating circuit is used for acquiring the current voltage of the battery from the voltage acquisition unit and the current of the battery from the current acquisition unit, and calculating the current residual electric quantity of the battery according to the current voltage and the current.

Since the current sampling is compatible with the embodiment, the calculated current remaining capacity of the battery is more accurate.

In one possible implementation, the power calculating circuit and the power protection circuit are integrated on the same processor.

Because the electric quantity calculating circuit and the power protection circuit of the embodiment are integrated on one processor, which is equivalent to a scheme that one part realizes the electric quantity calculating circuit and the power protection circuit, the cost is saved, and the occupied volume is also reduced.

In one possible implementation, the electric quantity calculation circuit is disposed outside the battery. Because the battery is not required to be internally provided with an electric quantity calculating circuit, the volume of the battery is reduced.

In one possible implementation, the power protection circuit is disposed outside the battery. Because it is not necessary to have a power protection circuit in the battery, the volume of the battery is reduced.

In one possible implementation, the battery management circuit is disposed outside the battery. The battery is not required to be internally provided with the whole battery management circuit, so that the volume of the battery is further reduced. And the battery management circuit can be integrated on the same processor outside the battery, and can reuse the processor of the movable platform, thereby reducing the cost and saving the volume of the movable platform. The method is particularly suitable for the movable platform with low cost and small volume.

In a second aspect, an embodiment of the present application provides a movable platform, including a battery and a battery management circuit, where the battery management circuit is connected to the battery;

the battery management circuit comprises an electric quantity calculation circuit and a power protection circuit, and the electric quantity calculation circuit is connected with the power protection circuit;

In this embodiment, because the power calculating circuit suspends calculating the current remaining power of the battery, the phenomenon of the jump of the remaining power of the battery is avoided, and the situation that the sudden change of the remaining power of the battery is 0% is avoided, so that the current remaining power of the battery is still the remaining power obtained by the previous calculation, thereby avoiding the phenomenon that the movable platform is shut down due to the jump of the remaining power, ensuring the normal use of the movable platform, and improving the user experience.

In one possible implementation, the movable platform further includes a motor, and the power protection circuit is further connected to the motor;

the power protection circuit is further configured to output a second indication signal to the motor if the current power bearing capacity is smaller than a preset power bearing capacity, where the second indication signal is used for indicating to reduce power consumption of the motor;

and the motor is used for reducing power consumption according to the second indication signal if the second indication signal is received.

In one possible implementation, the power protection circuit is further connected with a motor of the movable platform;

the power consumption judging sub-circuit is used for acquiring the working parameters of the motor and determining whether the power consumption of the motor is greater than preset power consumption according to the working parameters of the motor;

In a possible implementation manner, the power bearing capacity calculating sub-circuit is further connected with a voltage acquisition unit of the battery;

Under the condition that the power bearing capacity of the battery is not enough to support the movable platform (such as a handheld cloud deck) to work, the voltage (loaded voltage) of the motor can drop, and under the serious condition, the voltage can drop below the normal working voltage threshold value of the motor, so that the current power bearing capacity of the battery can be accurately estimated according to the current voltage of the battery.

In one possible implementation, the power protection sub-circuit is further connected to the motor;

the power protection sub-circuit is further configured to output a second indication signal to the motor if the power bearing capacity calculation sub-circuit determines that the current power bearing capacity is smaller than a preset power bearing capacity, where the second indication signal is used for indicating that the power consumption of the motor is reduced;

and the motor is used for receiving a second indication signal output by the power protection sub-circuit and reducing power consumption according to the second indication signal. Because the power consumption of the motor is reduced, the battery can be recovered to the level of continuously supplying power to the motor of the movable platform, the movable platform is not shut down, and the service life of the movable platform is prolonged.

In one possible implementation, the movable platform further includes an electric governor connected to the motor; the power protection circuit is connected with the motor through the electric regulator. The working parameters of the motor can be accurately acquired through electric regulation, and the motor can be accurately indicated to reduce power consumption.

In a possible implementation, the motor comprises a motor of a head in the movable platform. Can avoid appearing the jump of residual capacity when cloud platform stalling, become 0% phenomenon even, maintain movable platform's normal use.

In one possible implementation, the power calculating circuit and the power protection circuit are integrated on the same processor. Because the electric quantity calculating circuit and the power protection circuit are integrated on one processor, the scheme that the electric quantity calculating circuit and the power protection circuit are realized by one component is equivalent to that the electric quantity calculating circuit and the power protection circuit are realized by the other component, the cost is saved, and the occupied volume is reduced.

In a possible implementation, the movable platform comprises a handheld pan/tilt head, thereby further reducing the cost and volume of the handheld pan/tilt head.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a handheld pan/tilt head according to an embodiment of the present application;

fig. 2 is a schematic diagram of a battery management circuit according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a battery management circuit coupled to a motor according to an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of a battery management circuit according to another embodiment of the present application;

fig. 5 is a schematic diagram illustrating a connection between a battery management circuit and a voltage acquisition unit and a current acquisition unit according to an embodiment of the present disclosure;

fig. 6 is a schematic diagram illustrating an electric quantity calculating circuit and a power protection circuit integrated in the same processor according to an embodiment of the present disclosure;

FIG. 7 is a schematic view of a movable stage provided in an embodiment of the present application;

FIG. 8 is a schematic view of a movable platform provided in accordance with another embodiment of the present application;

FIG. 9 is a schematic view of a movable platform provided in accordance with another embodiment of the present application;

FIG. 10 is a schematic view of a movable platform provided in accordance with another embodiment of the present application;

fig. 11 is a schematic view of a movable platform according to another embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. 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 application.

Based on this, embodiments of the present application provide a battery management circuit and a movable platform. The battery management circuit comprises an electric quantity calculation circuit and a power protection circuit, the power protection circuit acquires the current power bearing capacity of the battery, and if the current power bearing capacity acquired by the power protection circuit is smaller than the preset power bearing capacity, the electric quantity calculation circuit suspends the calculation of the current residual electric quantity of the battery, so that the phenomenon that the movable platform is shut down due to the fact that the residual electric quantity of the battery jumps to 0% and the use of the movable platform is influenced is avoided.

Wherein, the movable platform of this application embodiment can be unmanned aerial vehicle, unmanned car, unmanned ship, robot, handheld cloud platform etc.. The following description of the movable platform of the present application uses a handheld pan-tilt as an example.

Exemplarily, fig. 1 is a schematic structural diagram of a handheld cloud deck provided in an embodiment of the present application. As shown in fig. 1, the handheld pan/tilt head may include a handle 110 and a pan/tilt head 120. Handle 110 is connected to pan and tilt head 120.

The pan/tilt head 120 may be configured to carry a shooting device 130, and the shooting device 121 in this embodiment may be, for example, a camera, a video camera, a mobile phone, and the like.

Wherein, the handle 110 can be provided with a control key 111, and the holder 120 is used for controlling the handheld holder. It should be noted that the number and implementation of the control keys 111 are not limited in this embodiment. For example, the control key 111 may be, for example, an on-off key, a mode switching key, or the like. The handle 110 may have a battery (not shown) mounted therein for powering the various components of the handheld head.

The pan/tilt head 120 may include a Pitch axis (Pitch axis) mechanism 121, a Yaw axis (Yaw axis) mechanism 122, and a Roll axis (Roll axis) mechanism 123. The pitch axis mechanism 121 includes a pitch axis rotation shaft and a pitch axis drive motor; the translation shaft mechanism 122 includes a translation shaft rotation shaft and a translation shaft drive motor; the traverse roller mechanism 123 includes a traverse roller rotating shaft and a traverse roller driving motor.

Optionally, the handheld cradle head may include a clamping mechanism 140 for securing the photographing apparatus 130. The shape and position of the clamping mechanism 140 are not limited in the embodiments of the present application. Alternatively, an inertial measurement unit may be disposed in the clamping mechanism 140. Alternatively, the inertial measurement unit may be a gyroscope, an accelerometer, or the like.

Fig. 2 is a schematic diagram of a battery management circuit according to an embodiment of the present disclosure, and as shown in fig. 2, the battery management circuit 200 according to the embodiment may include: a power quantity calculation circuit 210 and a power protection circuit 220, and the power quantity calculation circuit 210 is connected with the power protection circuit 220. The power guard circuit 220 may be in communication with the charge level calculation circuit 210, such as the charge level calculation circuit 210 may receive a signal from the output of the power guard circuit 220.

The power protection circuit 220 is configured to obtain a current power bearing capacity of the battery, and output a first indication signal to the electric quantity calculation circuit 210 if the current power bearing capacity is smaller than a preset power bearing capacity, where the first indication signal is used to indicate that the calculation of the current remaining electric quantity of the battery is suspended.

The power calculating circuit 210 is configured to calculate a current remaining power of the battery, and suspend calculating the current remaining power of the battery according to the first indication signal if the first indication signal output by the power protection circuit 220 is received.

In this embodiment, the power protection circuit 220 may obtain a state of power (SOP) of the battery, and then determine whether the current SOP is smaller than a preset SOP, if the current SOP is smaller than the preset SOP, it is easy to trigger a voltage threshold, which results in a large difference between the remaining power of the battery calculated by the power calculation circuit 210 and the previous remaining power, and a phenomenon of residual power jump, for example, the calculated remaining power of the battery is directly 0%. Therefore, in order to avoid the jump phenomenon of the remaining power of the battery calculated by the power calculation circuit 210, the power protection circuit 220 outputs a first indication signal to the power calculation circuit 210, where the first indication signal is used to indicate that the calculation of the current remaining power of the battery is suspended. Accordingly, the power calculating circuit 210 receives the first indication signal output by the power protection circuit 220, and suspends calculating the current remaining power of the battery according to the first indication signal. The electric quantity calculating circuit 210 suspends calculating the current residual electric quantity of the battery, so that the phenomenon that the residual electric quantity of the battery jumps is avoided, and the situation that the residual electric quantity of the battery suddenly changes to 0% is avoided, so that the current residual electric quantity of the battery is still the residual electric quantity obtained by previous calculation, the phenomenon that the movable platform is shut down due to the jumping of the residual electric quantity is avoided, the normal use of the movable platform is guaranteed, and the user experience is improved.

Optionally, if the current power-bearing capacity is greater than or equal to the preset power-bearing capacity, it indicates that the phenomenon of battery remaining capacity jump is not caused, and the power protection circuit 220 outputs a signal for indicating that the current remaining capacity of the battery can be calculated to the capacity calculation circuit 210. Accordingly, after receiving the signal, the power calculating circuit 210 calculates the current remaining power of the battery, and ensures that the current remaining power of the battery matches with the actual remaining power in time, so as to ensure normal and reasonable use of the battery.

Optionally, the time length for which the power calculation circuit 210 suspends calculating the current remaining power of the battery is preset. When the preset time length is reached after the electric quantity calculating circuit 210 suspends calculating the current remaining electric quantity of the battery according to the first indication signal, the electric quantity calculating circuit 210 can start calculating the current remaining electric quantity of the battery, and ensure that the current remaining electric quantity of the battery is matched with the actual remaining electric quantity in time so as to ensure normal and reasonable use of the battery.

Based on the embodiment shown in fig. 2, fig. 3 is a schematic diagram of a connection between a battery management circuit and a motor according to an embodiment of the present application, and as shown in fig. 3, a power protection circuit 220 in the battery management circuit 200 of the present embodiment is further used for connecting with a motor 300 of a movable platform.

In some embodiments, the power protection circuit 220 is further configured to output a second indication signal to the motor 300 if the current power-bearing capacity is smaller than the preset power-bearing capacity, where the second indication signal is used to indicate that the power consumption of the motor 300 is reduced.

In this embodiment, the battery supplies power to the motor 300 of the movable platform, and if it is determined that the current power bearing capability is smaller than the preset power bearing capability, the power protection circuit 220 indicates that the power consumption of the motor 300 of the movable platform may be relatively large, where the motor 300 may include, for example, a motor of a cradle head in the movable platform, and the movable platform is, for example, the handheld cradle head shown in fig. 1, and the cradle head may be the cradle head 120 shown in fig. 1, and if the current power bearing capability is smaller than the preset power bearing capability, it indicates that a cradle head stalling phenomenon may occur. In order to increase the power endurance of the battery, it is necessary for the motor 300 to reduce power consumption (for example, reduce the rotation speed of the motor 300, or even stop the rotation of the motor) so as to unload the pan/tilt head, and therefore, the power protection circuit 220 outputs a second indication signal to the motor 300, where the second indication signal is used for indicating that the power consumption of the motor 300 is reduced. Accordingly, the motor 300 receives the second indication signal output by the power protection circuit 220 and reduces power consumption according to the second indication signal. Since the power consumption of the motor 300 is reduced and the motor is powered by the battery, after the power consumption of the motor 300 is reduced, the voltage of the battery is restored to a level that can continuously supply power to the movable platform, for example, a level that can continuously supply power to the motor of the movable platform, and a condition that provides power for the tripod head power of the movable platform. At this time, the remaining capacity of the battery is calculated by the capacity calculating circuit 210, and the remaining capacity jump phenomenon and the remaining capacity jump of 0% are not caused. Therefore, the movable platform can be restored to be normally used, for example, the cradle head is restored to be normal in use, the cradle head stalling phenomenon is eliminated, the time for using the movable platform by a user is prolonged, the product safety of the movable platform is protected, and the user experience is improved.

Alternatively, the output of the first indication signal from the power protection circuit 220 to the power calculation circuit 210 may be performed before or simultaneously with the output of the second indication signal from the power protection circuit 220 to the power calculation circuit 210. Thus, during the time period when the power calculating circuit 210 suspends calculating the current remaining power of the battery, which may be used as a buffer period, the motor 300 reduces the power consumption, so that the battery can be restored to a level that can continuously supply power to the motor of the mobile platform, and the mobile platform is not shut down.

Optionally, power protection circuit 220 is connected to motor 300 through an electrical connection of motor 300. Wherein, the motor 300 is electrically connected with the motor 300, and the rotation of the motor 300 is controlled by the electric regulation. Therefore, the power protection circuit 220 may output the second indication signal to the electrical regulator of the motor 300, and the electrical regulator controls the motor 300 to reduce the rotation speed, or even stop the motor from rotating, so as to reduce the power consumption of the motor 300.

In some embodiments, the power protection circuit 220 is configured to obtain an operating parameter of the motor 300, and obtain a current power-bearing capacity of the battery if it is determined that the power consumption of the motor 300 is greater than a preset power consumption according to the operating parameter of the motor 300.

In this embodiment, the power protection circuit 220 may be connected to the motor 300, and accordingly, an optional way for the power protection circuit 220 to obtain the current power bearing capability of the battery is as follows: the power protection circuit 220 obtains the operating parameters of the motor 300, determines the power consumption of the motor 300 according to the operating parameters of the motor 300, and determines whether the power consumption of the motor 300 is greater than a preset power consumption, if the power consumption of the motor 300 is greater than the preset power consumption, it indicates that the mobile platform is in a medium-high power consumption state, and it is likely that the battery cannot bear the current power consumption, so that the current power bearing capacity of the battery needs to be further obtained to determine whether the current power bearing capacity is less than the preset power bearing capacity, so as to take corresponding measures to ensure the continuous use of the mobile platform.

Based on the embodiments shown in fig. 2 or fig. 3, fig. 4 is a schematic diagram of a battery management circuit according to another embodiment of the present application, and as shown in fig. 4, the power protection circuit 220 includes: a power consumption judgment sub-circuit 221, a power-bearing capability calculation sub-circuit 222, and a power protection sub-circuit 223. The power consumption judgment sub-circuit 221 is used for being connected with the motor 300 of the movable platform, and the power protection sub-circuit 223 is connected with the electric quantity calculation circuit 210.

The power consumption judging sub-circuit 221 is configured to obtain an operating parameter of the motor 300, and determine whether the power consumption of the motor 300 is greater than a preset power consumption according to the operating parameter of the motor 300.

The power-consumption judging sub-circuit 221 is configured to, if the power consumption of the motor 300 is determined to be greater than the preset power consumption by the power-consumption calculating sub-circuit 222, obtain the current power-consumption capacity of the battery, and determine whether the current power-consumption capacity is smaller than the preset power-consumption capacity.

And the power protection sub-circuit 223 is configured to output a first indication signal to the electric quantity calculation circuit 210 if the power bearing capacity calculation sub-circuit 222 determines that the current power bearing capacity is smaller than the preset power bearing capacity.

Specifically, the power consumption determining sub-circuit 221 is connected to the motor 300, and may obtain the operating parameter of the motor 300, determine the power consumption of the motor according to the operating parameter of the motor 300, and then determine whether the power consumption of the motor 300 is greater than the preset power consumption. If the power consumption judgment sub-circuit 221 determines that the power consumption of the motor 300 is less than or equal to the preset power consumption, if the power consumption of the motor 300 is greater than the preset power consumption, it indicates that the mobile platform is in a medium-high power consumption state, and it is likely that the battery cannot bear the current power consumption, the power bearing capacity calculation sub-circuit 222 acquires the current power bearing capacity of the battery. The power-holding capacity calculating sub-circuit 222 determines whether the current power-holding capacity is smaller than a preset power-holding capacity.

If the power tolerance calculation sub-circuit 222 determines that the current power tolerance is smaller than the preset power tolerance, it is easy to trigger the voltage threshold, which results in a large difference between the remaining power of the battery calculated by the power calculation circuit 210 and the previous remaining power, and a phenomenon of residual power jump, the power protection sub-circuit 223 outputs a first indication signal to the power calculation circuit 210, and instructs the power calculation circuit 210 to suspend calculating the current remaining power of the battery.

Because when the power consumption of the motor is large and the power bearing capacity of the battery is small, the electric quantity calculating circuit 210 suspends calculating the current residual electric quantity of the battery, the phenomenon that the residual electric quantity of the battery jumps is avoided, and the situation that the residual electric quantity of the battery suddenly changes to 0% is avoided, so that the current residual electric quantity of the battery is still the residual electric quantity obtained by previous calculation, the phenomenon that the movable platform is shut down due to the fact that the residual electric quantity jumps is avoided, normal use of the movable platform is guaranteed, and user experience is improved.

Optionally, the power consumption judging sub-circuit 221 is connected to the motor 300 through an electrical regulation of the motor 300. Wherein, motor 300 is electrically connected with the electronic tilt of motor 300, so power protection circuit 220 may obtain the working parameters of motor 300 from the electronic tilt of motor 300. The operating parameters of the electric machine may include one or more of: the working voltage of the motor, the working current of the motor and the rotating speed of the motor.

In some embodiments, the power protection subcircuit 223 described above is also used in connection with the electric machine 300. The power protection sub-circuit 223 is further configured to output a second indication signal to the motor 300 if the power bearing capability calculation sub-circuit 222 determines that the current power bearing capability is smaller than the preset power bearing capability, where the second indication signal is used to indicate that the power consumption of the motor 300 is reduced.

Specifically, if the power-bearing capacity calculation sub-circuit 222 determines that the current power-bearing capacity of the battery is smaller than the preset power-bearing capacity, the power protection sub-circuit 223 outputs not only the first indication signal to the electric quantity calculation circuit 210 but also the second indication signal to the motor 300. Accordingly, the motor 300 reduces power consumption of the motor 300 according to the second indication signal.

Optionally, the power protection sub-circuit 223 is connected to the motor 300 through an electrical regulation of the motor 300. The motor 300 is connected with the electric regulator of the motor 300, and the rotation of the motor 300 is controlled by the electric regulator, so the power protection sub-circuit 223 can send a second indication signal to the electric regulator of the motor 300, and the electric regulator reduces the rotation speed of the motor 300 according to the second indication signal, even stops the rotation of the motor, so as to reduce the power consumption of the motor 300.

In some embodiments, the power-handling capability calculating sub-circuit 222 is further configured to be connected to a voltage acquisition unit 400 of the battery. And the power bearing capacity calculating sub-circuit 222 is used for acquiring the current voltage of the battery from the voltage acquisition unit 400 of the battery and acquiring the current power bearing capacity of the battery according to the current voltage of the battery.

In this embodiment, when the power consumption judging sub-circuit 221 determines that the power consumption of the motor 300 of the movable platform is greater than the preset power consumption, the power endurance calculating sub-circuit 222 needs to obtain the current power endurance of the battery. Since the power-carrying capacity calculating sub-circuit 222 is connected to the voltage collecting unit 400 of the battery, and the voltage collecting unit 400 is used for collecting the current voltage of the battery, the power-carrying capacity calculating sub-circuit 222 can obtain the current voltage of the battery from the voltage collecting unit 400. Since the current voltage of the battery is related to the current power capability of the battery, the power capability calculating sub-circuit 222 obtains the current power capability of the battery according to the current voltage of the battery. For example, when the power capacity of the battery is not sufficient to support the movable platform (for example, the handheld cradle head) to work, the voltage (loaded voltage) of the motor may drop, and in a severe case, the voltage may drop below the threshold of the normal working voltage of the motor, so that the present embodiment may accurately estimate the current power capacity of the battery according to the current voltage of the battery.

In some embodiments, the power-carrying capacity calculating sub-circuit 222 obtains the current cell voltages of the battery from the voltage collecting unit 400, and determines the minimum cell voltage from the current cell voltages. Alternatively, the power-carrying capacity calculating sub-circuit 222 obtains the current minimum cell voltage of the battery from the voltage collecting unit 400. Then, the power-holding capacity calculation sub-circuit 222 obtains the current power-holding capacity of the battery according to the current minimum cell voltage of the battery. In the embodiment, the current minimum voltage core voltage of the battery is adopted to obtain the current power bearing capacity of the battery, so that the current power bearing capacity is obtained in time before the dangerous threshold value of the voltage is reached, corresponding measures are taken according to the current power bearing capacity, and the movable platform is prevented from being shut down. For example, the operation of the motor is gradually limited just before the dangerous threshold of the voltage is reached, so that the situation that the voltage of the battery is smaller than the dangerous threshold is avoided, and the service life of the movable platform is prolonged.

On the basis of the foregoing embodiments, fig. 5 is a schematic diagram illustrating a connection between a battery management circuit and a voltage acquisition unit and a current acquisition unit according to an embodiment of the present application, and as shown in fig. 5, an electric quantity calculation circuit 210 in a battery management circuit 200 is further configured to be connected to a voltage acquisition unit 400 and a current acquisition unit 500 of a battery. The power calculating circuit 210 is configured to obtain a current voltage of the battery from the voltage collecting unit 400 and a current of the battery from the current collecting unit 500, and calculate a current remaining power of the battery according to the current voltage and the current.

In this embodiment, the voltage collecting unit 400 is used to collect the current voltage of the battery, the electric quantity calculating circuit 210 is connected to the voltage collecting unit 400, and the electric quantity calculating circuit 210 can obtain the current voltage of the battery from the voltage collecting unit 400. The current collection unit 500 is used for collecting the current of the battery, the electric quantity calculation circuit 210 is connected with the current collection unit 500, and the electric quantity calculation circuit 210 can obtain the current of the battery from the current collection unit 500. After the current voltage and the current of the battery are obtained, the electric quantity calculation circuit 210 calculates the current remaining electric quantity of the battery according to the current voltage and the current.

In a possible implementation manner, after obtaining the current voltage and the current, the electric quantity calculation circuit 210 determines whether the motor is in a standard working condition according to the current voltage and the current, and if the motor is in the standard working condition, calculates the current remaining electric quantity of the battery according to the current voltage and the current. Such as: and if the battery is judged to be neither in the full charge state nor in the full discharge state according to the current voltage and the current, and the motor is in the standard working condition, calculating the current residual capacity of the battery according to the current voltage and the current. And if the battery is judged to be in the full charge state according to the current voltage and the current, which indicates that the motor is not in the standard working condition, determining that the current residual capacity of the battery is 100%. And if the battery is judged to be in a full discharge state according to the current voltage and the current, which indicates that the motor is not in the standard working condition, determining that the current residual capacity of the battery is 0%.

The power calculating circuit 210 may calculate the current remaining power of the battery by using a voltage look-up table and a smoothing filter of the battery according to the current voltage and the current of the battery.

Based on the above embodiments, the power calculating circuit 210 and the power protection circuit 220 are integrated on the same processor, as shown in fig. 6. Since the electric quantity calculating circuit 210 and the power protection circuit 220 of the embodiment are integrated on one processor, which is equivalent to a single component, the scheme that the electric quantity calculating circuit 210 and the power protection circuit 220 are realized, which not only saves the cost, but also reduces the occupied volume.

On the basis of the above embodiments, the power calculating circuit 210 is disposed outside the battery. The battery does not need to be provided with the electric quantity calculating circuit 210, so that the volume of the battery is reduced.

Based on the above embodiments, the power protection circuit 220 is disposed outside the battery. The battery size is reduced because the power protection circuit 220 does not need to be disposed in the battery.

On the basis of the above embodiments, the battery management circuit 200 is disposed outside the battery. The battery size is further reduced since the entire battery management circuit 200 need not be provided within the battery. Moreover, the battery management circuit 200 can be integrated on the same processor outside the battery, and can reuse the processor of the movable platform, thereby reducing the cost and saving the volume of the movable platform. The method is particularly suitable for the movable platform with low cost and small volume.

In summary, the battery management circuit 200 may be applied to products including a battery with voltage sampling, including but not limited to a cradle head type product, and a handheld remote control type product. The battery pack is suitable for lithium ion batteries and batteries based on lithium ion work, has low typical discharge multiplying power (long endurance), relatively stable working conditions (such as constant current and constant power), pulse discharge and the like, is sensitive to cost/structure, and is particularly suitable for battery and motor combined products with relatively single stable working conditions, such as a handheld holder and the like.

Fig. 7 is a schematic view of a movable platform according to an embodiment of the present disclosure, and as shown in fig. 7, a movable platform 700 according to this embodiment may include: a battery 710 and a battery management circuit 720. The battery management circuit 720 is connected to the battery 710.

Battery management circuit 720 includes a power level calculation circuit 721 and a power protection circuit 722, where power level calculation circuit 721 is coupled to power protection circuit 722.

The power protection circuit 722 is configured to obtain a current power capability of the battery 710, and output a first indication signal to the electric quantity calculation circuit 721 if the current power capability is smaller than a preset power capability, where the first indication signal is used to indicate that the calculation of the current remaining electric quantity of the battery 710 is suspended.

The power calculating circuit 721 is configured to calculate a current remaining power of the battery 710, and suspend calculating the current remaining power of the battery 710 according to the first indication signal if the first indication signal output by the power protection circuit 722 is received.

The specific implementation process of this embodiment can be referred to the related description in the embodiment shown in fig. 2.

In this embodiment, since the power calculating circuit 721 suspends calculating the current remaining power of the battery, the phenomenon of jumping of the remaining power of the battery is avoided, and the situation that the remaining power of the battery is suddenly changed to 0% is further avoided, so that the current remaining power of the battery is still the remaining power calculated before, thereby avoiding the phenomenon that the movable platform is shut down due to jumping of the remaining power, ensuring the normal use of the movable platform, and improving the user experience.

Based on the embodiment shown in fig. 7, fig. 8 is a schematic diagram of a movable platform according to another embodiment of the present application, and as shown in fig. 8, the movable platform 700 further includes a motor 730, and the power protection circuit 722 is further connected to the motor 730.

In some embodiments, the power protection circuit 722 is further configured to output a second indication signal to the motor 730 if the current power capability is smaller than the preset power capability, where the second indication signal is used to indicate that the power consumption of the motor 730 is reduced.

And the motor 730 is used for reducing the power consumption according to the second indication signal if the second indication signal is received.

For a specific implementation process of this embodiment, reference may be made to the related description in the embodiment shown in fig. 3, and details are not described here.

Optionally, the motor 730 includes a motor 730 of a pan/tilt head in the movable platform.

Since the power consumption of the motor 730 is reduced and the motor 730 is powered by the battery 710, after the power consumption of the motor 730 is reduced, the voltage of the battery 710 is restored to a level that can continuously supply power to the movable platform 700, such as a level that can continuously supply power to the motor 730 of the movable platform 700, and a condition that can supply power to the holder power of the movable platform 700. At this time, the remaining capacity calculation circuit 721 calculates the remaining capacity of the battery, and the remaining capacity jump phenomenon does not occur, and the remaining capacity jump is not 0%. Therefore, the movable platform 700 can be recovered to be normally used, for example, the cradle head is recovered to be normal in use, the cradle head stalling phenomenon is eliminated, the time for using the movable platform by a user is prolonged, the product safety of the movable platform is protected, and the user experience is improved.

In some embodiments, the power protection circuit 722 is also coupled to a motor 730 of the movable platform 700.

The power protection circuit 722 is configured to obtain an operating parameter of the motor 730, and obtain a current power capability of the battery 710 if it is determined that the power consumption of the motor 730 is greater than a preset power consumption according to the operating parameter of the motor 730.

If the power consumption of the motor 730 is greater than the preset power consumption, it is indicated that the mobile platform 700 is in a medium-high power consumption state, and it is very likely that the battery cannot bear the current power consumption, so that the current power bearing capacity of the battery needs to be further obtained to determine whether the current power bearing capacity is less than the preset power bearing capacity, so as to take corresponding measures to ensure the continuous use of the mobile platform 700.

Based on the embodiments shown in fig. 7 or fig. 8, fig. 9 is a schematic diagram of a movable platform according to another embodiment of the present application, and as shown in fig. 9, the power protection circuit 722 includes: a power consumption judgment sub-circuit 722a, a power-bearing capability calculation sub-circuit 722b, and a power protection sub-circuit 722 c. The power consumption judgment sub-circuit 722a is used for connecting with the motor 730 of the movable platform 700, and the power protection sub-circuit 722c is used for connecting with the power calculation circuit 721.

The power consumption judging sub-circuit 722a is configured to obtain an operating parameter of the motor 730, and determine whether the power consumption of the motor 730 is greater than a preset power consumption according to the operating parameter of the motor 730.

The power consumption judging sub-circuit 722a is configured to, if the power consumption of the motor 730 is determined to be greater than the preset power consumption by the power consumption calculating sub-circuit 722b, obtain the current power consumption of the battery 710, and determine whether the current power consumption is less than the preset power consumption.

The power protection sub-circuit 722c is configured to output a first indication signal to the power amount calculation circuit 721 if the power endurance calculation sub-circuit 722b determines that the current power endurance is smaller than the preset power endurance.

For a specific implementation process of this embodiment, reference may be made to relevant description in the embodiment shown in fig. 4, which is not described herein again.

Because the power consumption of the motor 730 is large and the power bearing capacity of the battery 710 is small, the power calculating circuit 721 suspends calculating the current remaining power of the battery 710, thereby avoiding the phenomenon of jumping of the remaining power of the battery 710 and even avoiding the situation that the remaining power of the battery is suddenly changed to 0%, so that the current remaining power of the battery 710 is still the remaining power calculated before, thereby avoiding the phenomenon that the movable platform 700 is shut down due to jumping of the remaining power, ensuring the normal use of the movable platform 700 and improving the user experience.

In some embodiments, the power-handling capability calculating sub-circuit 722b is also connected to the voltage collecting unit 711 of the battery 710.

The power-carrying capacity calculating sub-circuit 722b is configured to obtain the current voltage of the battery 710 from the voltage collecting unit 711 of the battery 710, and obtain the current power-carrying capacity of the battery 710 according to the current voltage of the battery 710.

In some embodiments, the power protection sub-circuit 722c is also coupled to a motor 730.

The power protection sub-circuit 722c is further configured to output a second indication signal to the motor 730 if the power-withstand-capability calculating sub-circuit 722b determines that the current power-withstand capability is smaller than the preset power-withstand capability, where the second indication signal is used to indicate that the power consumption of the motor 730 is reduced.

And the motor 730 is configured to receive the second indication signal output by the power protection sub-circuit 722c and reduce power consumption according to the second indication signal.

Because of the reduced power consumption of the motor 730, the battery 710 can be restored to a level that can continuously power the motor of the mobile platform without shutting down the mobile platform 700, which prolongs the lifetime of the mobile platform 700.

On the basis of the above embodiments, the movable platform 700 further includes an electric tilt 740 connected to the motor 730. Power protection circuit 722 is connected to motor 730 through power conditioner 740. The working parameters of the motor 730 can be accurately obtained through the electronic tuning 740, and the motor 730 can be accurately indicated to reduce power consumption.

On the basis of the foregoing embodiments, fig. 10 is a schematic diagram of a movable platform according to another embodiment of the present application, and as shown in fig. 10, the electric quantity calculating circuit 721 is further configured to be connected to a voltage collecting unit 711 and a current collecting unit 712 of a battery.

And a power calculating circuit 721 for acquiring the current voltage of the battery from the voltage acquiring unit 711 and the current of the battery from the current acquiring unit 712, and calculating the current remaining power of the battery according to the current voltage and the current.

For a specific implementation process of this embodiment, reference may be made to the related description in the embodiment shown in fig. 5, which is not described herein again.

Based on the above embodiments, the power calculating circuit 721 and the power protection circuit 722 are integrated on the same processor, as shown in fig. 11. Since the electric quantity calculating circuit 721 and the power protection circuit 722 are integrated on one processor in this embodiment, it is equivalent to a single component that implements the above-mentioned electric quantity calculating circuit 721 and the power protection circuit 722, which not only saves the cost, but also reduces the occupied volume.

On the basis of the above-described embodiments, the electric quantity calculation circuit 721 is provided outside the battery 710. Since the charge amount calculation circuit 721 does not need to be provided in the battery, the volume of the battery 710 is reduced.

Based on the above embodiments, the power protection circuit 722 is disposed outside the battery 710. The battery 710 is reduced in size because the power protection circuit 722 need not be disposed within the battery 710.

On the basis of the above embodiments, the battery management circuit 720 is disposed outside the battery 710. The volume of the battery 710 is further reduced by eliminating the need to provide the entire battery management circuit 720 within the battery 710. Moreover, the battery management circuit 720 can be integrated on the same processor outside the battery 710, and the processor of the movable platform 700 can be reused, thereby reducing the cost and saving the volume of the movable platform 700. Particularly for low cost, small volume, movable platforms 700.

Optionally, the movable platform 700 comprises a handheld pan-tilt.

The movable platform 700 may be a product including a battery for voltage sampling, including but not limited to a cradle head type product, and may also be a handheld remote control type product. The battery pack is suitable for lithium ion batteries and batteries based on lithium ion work, has low typical discharge multiplying power (long endurance), relatively stable working conditions (such as constant current and constant power), pulse discharge and the like, is sensitive to cost/structure, and is particularly suitable for battery and motor combined products with relatively single stable working conditions, such as a handheld holder and the like. The cost and the volume of the handheld cloud deck can be further reduced.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should 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 or all of the 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 application.

Claims

1. A battery management circuit, comprising: the electric quantity calculating circuit is connected with the power protection circuit;

2. The battery management circuit of claim 1, wherein the power protection circuit is further configured to interface with a motor of a movable platform;

3. The battery management circuit of claim 1, wherein the power protection circuit is further configured to interface with a motor of a movable platform;

4. The battery management circuit of claim 3, wherein the power protection circuit comprises: the power consumption judging sub-circuit is used for being connected with a motor of the movable platform, and the power protection sub-circuit is used for being connected with the electric quantity calculating circuit;

5. The battery management circuit of claim 4, wherein the power-handling capability calculating sub-circuit is further configured to connect to a voltage acquisition unit of the battery;

6. The battery management circuit of claim 4, wherein the power protection sub-circuit is further configured to interface with the motor;

7. The battery management circuit of claim 2, wherein the power protection circuit is coupled to the electric machine through an electrical regulation of the electric machine.

8. The battery management circuit of claim 1, wherein the charge amount calculating circuit is further configured to be connected to a voltage acquisition unit and a current acquisition unit of the battery;

9. The battery management circuit according to any of claims 1-8, wherein the charge level calculating circuit and the power protection circuit are integrated on the same processor; and/or the presence of a gas in the gas,

the electric quantity calculating circuit is arranged outside the battery; and/or the presence of a gas in the gas,

the power protection circuit is arranged outside the battery; and/or the presence of a gas in the gas,

the battery management circuit is disposed outside the battery.

10. A movable platform comprising a battery and a battery management circuit, the battery management circuit being connected to the battery;

11. The movable platform of claim 10, further comprising a motor, the power protection circuit further coupled to the motor;

12. The movable platform of claim 10, wherein the power protection circuit is further coupled to a motor of the movable platform;

13. The movable platform of claim 12, wherein the power protection circuit comprises: the power consumption judging sub-circuit is used for being connected with a motor of the movable platform, and the power protection sub-circuit is used for being connected with the electric quantity calculating circuit;

14. The movable platform of claim 13, wherein the power capability calculation sub-circuit is further connected to a voltage acquisition unit of the battery;

15. The movable platform of claim 13, wherein the power protection sub-circuit is further connected to the motor;

and the motor is used for receiving a second indication signal output by the power protection sub-circuit and reducing power consumption according to the second indication signal.

16. The movable platform of claim 11, further comprising an electrical tilt connected to the motor;

the power protection circuit is connected with the motor through the electric regulator.

17. The movable platform of claim 10, wherein the charge amount calculation circuit is further configured to connect to a voltage acquisition unit and a current acquisition unit of the battery;

18. The movable platform of claim 12, wherein the motor comprises a motor of a pan and tilt head in the movable platform.

19. The movable platform of any one of claims 11-18, wherein the charge-calculating circuit and the power-protection circuit are integrated on a same processor; and/or the presence of a gas in the gas,

the battery management circuit is arranged outside the battery; and/or the presence of a gas in the gas,

the movable platform comprises a handheld cloud deck.