CN110729788A - A power supply control method, system and device - Google Patents

Abstract

The embodiments of the present invention disclose a power supply control method, system and device. The method includes: acquiring power supply parameters of at least two power supply modules; determining power supply status information according to the at least two power supply parameters; sending the power supply status information to the at least two power supply modules, so that the at least two power supply modules The power supply module supplies power according to the power supply state information. In the power supply control method provided in this embodiment, the power supply status information is determined according to the power supply parameters of at least two power supply modules, so that the at least two power supply modules supply power according to the power supply status information, and the distance between the at least two power supply modules connected to the system control module can be determined. It can automatically control the power supply of the power supply module, which can improve the safety of the circuit and the utilization rate of electric energy.

Description

A power supply control method, system and device

technical field

Embodiments of the present invention relate to circuit control technologies, and in particular, to a power supply control method, system, and device.

Background technique

At present, due to the lagging development of lithium battery technology, the battery life of drones and other fields is generally short. In order to improve the battery life, the method that people often use is to increase the proportion of batteries in the product. , often using multi-battery power supply.

Since the power or voltage of each battery is not necessarily the same, in order to prevent potential safety hazards caused by mutual charging between batteries, the current management method for multi-battery systems often adopts hardware isolation control, by increasing the number of switches, or by increasing the number of diodes in the circuit In order to achieve the effect of preventing the batteries from charging each other.

However, increasing the number of switches reduces the fault tolerance rate of the circuit, and is not suitable for applications with high space and weight requirements such as drones. Increasing the number of diodes increases losses and reduces power utilization. Therefore, there is an urgent need for a technical solution for managing multiple power supply modules.

SUMMARY OF THE INVENTION

The invention provides a power supply control method, system and equipment, so as to realize the management of a multi-power supply module system and improve the safety of the circuit and the utilization rate of electric energy.

In a first aspect, an embodiment of the present invention provides a power supply control method, including:

Obtain the power supply parameters of at least two power supply modules;

determining power supply status information according to the at least two power supply parameters;

The power supply status information is sent to the at least two power supply modules, so that the at least two power supply modules supply power according to the power supply status information.

Further, before acquiring the power supply parameters of the at least two power supply modules, the method further includes:

Detect the connection with each power supply module;

An in-position signal is sent to the power supply module whose connection status is successful, so that the power supply module that receives the in-position signal turns off the charging switch.

Further, acquiring power supply parameters of at least two power supply modules, including:

Wake up the main control circuits of at least two power supply modules, so that the main control circuits read the power supply parameters of the power supply modules;

Receive power supply parameters sent by at least two main control circuits.

Further, the power supply status information is determined according to at least two power supply parameters, including:

performing a pairwise difference calculation on the at least two power supply parameters to obtain at least one calculation result;

The power supply state information is determined according to the absolute value of the at least one calculation result.

Further, determining the power supply status information according to the absolute value of the at least one calculation result, including:

If the absolute value of the at least one calculation result is smaller than the preset threshold, it is determined that the power supply status information is ON information;

Correspondingly, sending the power supply status information to the at least two power supply modules, so that the at least two power supply modules perform power supply according to the power supply status information, including:

The turn-on information is sent to the at least two power supply modules, so that the at least two power supply modules turn on charging and discharging switches.

If one or more of the absolute values of the at least one calculation result are greater than or equal to a preset threshold, determine that the power supply status information is off information;

Correspondingly, sending the power supply status information to the at least two power supply modules, so that the at least two power supply modules perform power supply according to the power supply status information, including:

The shutdown information is sent to the at least two power supply modules, so that the at least two power supply modules turn off the charging switch.

In a second aspect, an embodiment of the present invention further provides a power supply control system, where the power supply control system includes:

A system control module and at least two power supply modules;

The power supply port of the power supply module is connected to the power supply port of the system control module for supplying power to the system control module; the communication port of the power supply module is connected to the communication port of the system control module;

The system control module is configured to acquire power supply parameters of at least two power supply modules, determine power supply status information according to the at least two power supply parameters, and send the power supply status information to the at least two power supply modules;

The at least two power supply modules are configured to supply power according to the received power supply status information.

Further, the power supply module includes a battery pack, a main control circuit and a main circuit switch;

the battery pack is connected to the main control circuit for supplying power to the main control circuit;

The main control circuit is connected with the system control module through a communication port, and is used for sending the power supply parameters of the power supply module to the system control module and receiving the power supply status information sent by the system control module, and according to the power supply status information determining the first control signal;

the main control circuit is connected to the main loop switch, and is used for sending the first control signal to the main loop switch;

The main circuit switch is connected to the battery pack, and is used for controlling the battery pack to supply power to an external device according to the first control signal.

Further, the power supply module further includes a signal receiving device, the signal receiving device is connected to the main control circuit, and is used for receiving a start-up signal and sending the start-up signal to the main control circuit; the main control circuit The circuit determines a second control signal according to the start signal, and sends the second control signal to the main loop switch, so that the main loop switch controls the battery pack to the main loop switch according to the second control signal System control module power supply.

In a third aspect, an embodiment of the present invention further provides a device, where the device includes:

one or more processors;

a storage device for storing one or more programs;

When one or more programs are executed by one or more processors, the one or more processors implement the power supply control method as provided in any embodiment of the present invention.

In this embodiment of the present invention, the power supply parameters of at least two power supply modules are first obtained, then the power supply status information is determined according to the at least two power supply parameters, and finally the power supply status information is sent to the at least two power supply modules, so that the at least two power supply modules can Status information for power supply. In the power supply control method provided in this embodiment, the power supply status information is determined according to the power supply parameters of at least two power supply modules, so that the at least two power supply modules supply power according to the power supply status information, and the distance between the at least two power supply modules connected to the system control module can be determined. It can automatically control the power supply of the power supply module, which can improve the safety of the circuit and the utilization rate of electric energy.

Description of drawings

1 is a schematic structural diagram of a power supply control system in Embodiment 1 of the present invention;

2 is a schematic diagram of the internal architecture of a power supply module in Embodiment 1 of the present invention;

3 is a schematic diagram of an internal architecture of a power supply module in Embodiment 1 of the present invention;

4 is a flowchart of a power supply control method in Embodiment 2 of the present invention;

5 is a flowchart of a power supply control method in Embodiment 3 of the present invention;

6 is a flowchart of a power supply control method in Embodiment 4 of the present invention;

7 is a flowchart of a power supply control method in Embodiment 5 of the present invention;

FIG. 8 is a schematic structural diagram of a device in Embodiment 6 of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, the drawings only show some but not all structures related to the present invention.

Example 1

FIG. 1 is a schematic structural diagram of a power supply control system according to Embodiment 1 of the present invention. The power supply control system includes a system control module 110 and at least two power supply modules 120 .

The power port of the power supply module 120 is connected to the power port of the system control module 110 for supplying power to the system control module 110; the communication port of the power supply module 120 is connected to the communication port of the system control module 110 connected.

The system control module 110 is configured to acquire power supply parameters of at least two power supply modules 120, determine power supply status information according to the at least two power supply parameters, and send the power supply status information to the at least two power supply modules 120;

The at least two power supply modules 120 are configured to supply power according to the received power supply status information.

The communication port can be specifically understood as a communication interface for realizing bidirectional communication between the system control module 110 and the power supply module 120, such as an I2C bus, a serial interface, and the like.

The power supply parameter can be understood as state information of the power supply module 120 itself, such as voltage, power, cycle times, and the like.

Further, FIG. 2 is a schematic diagram of the internal structure of the power supply module. The power supply module 120 includes a battery pack 210 , a main control circuit 220 and a main circuit switch 230 .

The battery pack 210 is connected to the main control circuit 220 for supplying power to the main control circuit 220 .

The main control circuit 220 is connected to the system control module 110 through a communication port, and is used for sending the power supply parameters of the power supply module 120 to the system control module 110 and receiving the power supply status information sent by the system control module 110, and according to the system control module 110. The power supply status information determines a first control signal.

The main control circuit 220 is connected to the main loop switch 230 for sending the first control signal to the main loop switch 230 .

The main circuit switch 230 is connected to the battery pack 210, and is used to control the battery pack 210 to supply power to an external device according to the first control signal.

Further, as shown in FIG. 3 , the power supply module 120 further includes a signal receiving device 240, the signal receiving device 240 is connected to the main control circuit 220, and is used for receiving a start-up signal and sending the start-up signal to The main control circuit 220; the main control circuit 220 determines a second control signal according to the start signal, and sends the second control signal to the main loop switch 230, so that the main loop switch 230 The second control signal controls the battery pack 210 to supply power to the system control module 110 .

The signal receiving device 240 may be understood as a device that sends different signals according to different external states, such as buttons, pressure sensors, and temperature sensors.

Exemplarily, the working principle of the power supply control system in this embodiment is:

After at least two power supply modules 120 are inserted into the system control module 110, the power supply modules 120 are in a sleep or standby state. When the signal receiving device 240 of any power supply module 120 receives the start signal, the main control circuit 220 of the power supply module 120 is awakened, and then the main control circuit 220 of the power supply module 120 controls the main circuit switch 230 of the power supply module 120 The discharge switch in is turned on to supply power to the system control module 110 . Then, the system control module 110 wakes up the main control circuit 220 of each power supply module through the communication port. Finally, the system control module 110 determines the power supply status information according to the received power supply parameters, and sends the power supply status information to the main control circuit 220 of each power supply module 120 through the communication port. The power supply state information of the battery pack 210 sends control information to the main loop switch 230 to control the external power supply state of the battery pack 210 .

In the power supply control system provided by the embodiment of the present invention, the system control module obtains the power supply parameters of at least two power supply modules to determine the power supply state, so that the power supply module supplies power according to the power supply state, avoids mutual charging between different power supply modules, and only uses The switch configured by the power supply module itself does not need to configure multiple anti-reverse charging switches, which solves the problems of difficult control of multiple switches, large space occupation, high weight, and high power consumption of the internal resistance of the switch, which improves the safety of the circuit and the power consumption. utilization.

Embodiment 2

FIG. 4 is a flowchart of a power supply control method provided in Embodiment 2 of the present invention. This embodiment is applicable to the case of performing power supply control on multiple power supply modules, and the method may be executed by a power supply control system, which may Realized by software and/or hardware, the power supply control system can be configured on a computing device, and specifically includes the following steps:

Step 310: Obtain power supply parameters of at least two power supply modules.

The power supply module can be understood as a power supply device that can complete external power supply and perform data communication with external devices, such as a smart battery. Among them, the power supply parameters can be understood as the state information possessed by the power supply module itself, such as voltage, current, temperature, electric quantity, safety state, number of cycles, and the like.

Specifically, after at least two power supply modules are inserted into the system, the power supply modules are in a dormant or standby state. When any one of the power supply modules supplies power to the system control module, the system control module is woken up, and the main control circuits of all power supply modules that are successfully connected to the power supply module are woken up. The wake-up information is sent. After the main control circuit that receives the wake-up information is woken up, the power supply parameters of the battery pack in the power supply module are read, and the read power supply parameters are sent to the system control module.

Step 320: Determine power supply status information according to the at least two power supply parameters.

The power supply status information may be understood as feedback information to the power supply module determined by the system control module according to the received matching state of the power supply parameters.

Specifically, the system control module judges whether the connected power supply module meets the external power supply requirements according to the comparison of the received power supply parameters, and determines the information fed back to the power supply module according to the judgment result, and the information can be on information or off information.

Step 330: Send the power supply status information to the at least two power supply modules, so that the at least two power supply modules perform power supply according to the power supply status information.

Specifically, the system control module sends the generated power supply status information to the corresponding power supply module through the communication port, and the power supply module adjusts the opening and closing of the main circuit switch according to the received power supply status information to achieve external power supply or enter a standby or sleep state. For example, assuming that the power supply status information is ON information, the power supply module turns on the charging and discharging switches and starts to supply power to external devices; assuming that the power supply status information is OFF information, the power supply module turns off the charging and discharging switches and enters the standby or hibernation state.

In the technical solution of this embodiment, the power supply parameters of at least two power supply modules are acquired, then the power supply status information is determined according to the at least two power supply parameters, and finally the power supply status information is sent to the at least two power supply modules, so that the at least two power supply modules Power is supplied according to the power supply status information. The power supply state information is determined according to at least two power supply parameters, so that at least two power supply modules supply power according to the power supply state information, the state relationship between the power supply modules connected to the system control module can be determined, and the power supply of the power supply module can be automatically controlled, The safety of the circuit and the utilization rate of electric energy can be improved.

Embodiment 3

FIG. 5 is a flowchart of a power supply control method according to Embodiment 3 of the present invention. The technical solution of this embodiment is further refined on the basis of the above-mentioned technical solution, and specifically includes the following steps:

Step 410: Detect the connection with each power supply module.

The connection status can be understood as the connection status between the communication port and power port of each power supply module and the communication port and power port corresponding to the system control module, including connection success and connection failure.

Step 420: Send an in-position signal to the power supply module whose connection status is successful, so that the power supply module that receives the in-position signal turns off the charging switch.

Among them, the in-position signal can be understood as a basis for judging whether the power supply module is inserted into the system control module. Specifically, the in-position signal can be a level signal that is pulled up or pulled down, and the transmission method of the in-position signal can be Interrupt mode or scan mode to send.

Specifically, when the system control module detects that the control module is successfully connected to it, it sends an in-position signal to the successfully connected power supply module through the communication port. When the main control circuit of the power supply module detects the in-position signal, the main control circuit sends a signal to the main circuit switch. The control signal makes the charging switch in the main circuit switch close.

Step 430: Obtain power supply parameters of at least two power supply modules.

Step 440: Determine power supply status information according to the at least two power supply parameters.

Step 450: Send the power supply status information to the at least two power supply modules, so that the at least two power supply modules perform power supply according to the power supply status information.

The technical solution of this embodiment sends an in-position signal to the power supply module whose connection status is successful, so that the power supply module that receives the in-position signal turns off the charging switch, which can avoid any power supply module supplying power to the system control module. The problem of mutual charging between different power supply modules caused by differences in voltage and power, improves the safety of the circuit.

Embodiment 4

FIG. 6 is a flowchart of a power supply control method according to Embodiment 4 of the present invention. The technical solution of this embodiment is further refined on the basis of the above-mentioned technical solution, and specifically includes the following steps:

Step 510: Wake up the main control circuits of at least two power supply modules, so that the main control circuits read the power supply parameters of the power supply modules.

Specifically, after at least two power supply modules are inserted into the system, the power supply modules are in a dormant or standby state. When any one of the power supply modules supplies power to the system control module, the system control module is woken up, and it sends wake-up information through the communication port to wake up the connected module. The main control circuits of at least two power supply modules enable the main control circuits to start reading the power supply parameters of the corresponding power supply modules, wherein the wake-up information may be a change of a potential signal.

Step 520: Receive power supply parameters sent by at least two main control circuits.

Specifically, the system control module receives power supply parameters sent by at least two main control circuits through the communication port.

Step 530: Determine power supply status information according to the at least two power supply parameters.

Step 540: Send the power supply status information to the at least two power supply modules, so that the at least two power supply modules perform power supply according to the power supply status information.

In the technical solution of this embodiment, by waking up the main control circuits of at least two power supply modules, so that the main control circuits can read the power supply parameters of the power supply modules and receive the power supply parameters sent by the at least two main control circuits, it can be concise and clear. The status of each power supply module is determined, which improves the clarity of parameter acquisition.

Embodiment 5

FIG. 7 is a flowchart of a power supply control method according to Embodiment 5 of the present invention. The technical solution of this embodiment is further refined on the basis of the above-mentioned technical solution, and specifically includes the following steps:

Step 610: Acquire power supply parameters of at least two power supply modules.

Step 620: Perform a pairwise difference calculation on the at least two power supply parameters to obtain at least one calculation result.

Among them, the power supply parameter can be understood as the status information of the power supply module itself, such as voltage, current, temperature, power, safety state, cycle times, etc., exemplarily, taking voltage as an example, assuming that there are three power supply modules, the obtained The voltages are V1, V2, and V3, respectively, and the calculated results are V1-V2, V1-V3, and V2-V3 after making the difference.

Step 630: Determine power supply status information according to the absolute value of the at least one calculation result.

Specifically, if the absolute values of the at least one calculation result are all smaller than the preset threshold, it is determined that the power supply status information is ON information; if one or more of the absolute values of the at least one calculation result are greater than or equal to the preset threshold , the power supply status information is determined to be off information.

The preset threshold can be understood as the judgment information related to the state parameters of the power supply module itself. Different types of power supply modules have differences in capacitance and maximum cycle times. The determination of the threshold value is related to the type of power supply module.

Step 640: Send the power supply status information to the at least two power supply modules, so that the at least two power supply modules perform power supply according to the power supply status information.

Specifically, the manner of sending the power supply status information to the at least two power supply modules so that the at least two power supply modules perform power supply according to the power supply status information may be: sending the turn-on information to the at least two power supply modules, so that the at least two power supply modules turn on charging and discharging switches.

In this embodiment, when the power supply status information received by the main control circuit in the power supply module is ON information, the main control circuit generates an ON instruction according to the ON information, and sends the ON instruction to the main circuit switch, and the main circuit switch turns on the charging and The discharge switch enables the battery pack in the power supply module to supply power to external devices.

Specifically, a manner of sending the power supply status information to the at least two power supply modules so that the at least two power supply modules perform power supply according to the power supply status information may be: sending the shutdown information to the at least two power supply modules. at least two power supply modules, so that the at least two power supply modules turn off the charging switch.

In this embodiment, when the power supply status information received by the main control circuit in the power supply module is the shutdown information, the main control circuit generates a shutdown command according to the shutdown information, and sends the shutdown command to the main circuit switch, and the main circuit switch closes the charging and Discharge switch, so that the battery pack in the power supply module cannot be charged, but can only be passively discharged.

Sending the turn-on information to the at least two power supply modules so that the at least two power supply modules turn on the charging and discharging switches can reduce the resistance of the main circuit switch, thereby reducing line heating and waste of electric energy. Sending the shutdown information to the at least two power supply modules, so that the at least two power supply modules turn off the charging switch, can prevent high-intensity mutual charging between the power supply modules in a short period of time, thereby increasing the safety of the circuit.

Embodiment 6

FIG. 8 is a schematic structural diagram of a device according to Embodiment 6 of the present invention. As shown in FIG. 8 , the device includes a processor 710, a memory 720, an input device 730, and an output device 740; the number of processors 710 in the device may be One or more, a processor 710 is taken as an example in FIG. 8; the processor 710, memory 720, input device 730 and output device 740 in the device can be connected through a bus or other means, and the connection through a bus is taken as an example in FIG. 8 .

As a computer-readable storage medium, the memory 720 can be used to store software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the vehicle authority determination method in the embodiment of the present invention (for example, the system control module 110 and the power supply module 120). The processor 710 executes various functional applications and data processing of the device by running the software programs, instructions and modules stored in the memory 720 , that is, to implement the above-mentioned power supply control method.

The memory 720 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal, and the like. Additionally, memory 720 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some examples, memory 720 may further include memory located remotely from processor 710, which may be connected to the device through a network. Examples of such networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

The input device 730 may be used to receive input numerical or character information, and generate key signal input related to user settings and function control of the device, and may include a keyboard, a mouse, and the like. The output device 740 may include a display device such as a display screen.

Note that the above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention. The scope is determined by the scope of the appended claims.

Claims (10)

1. A power supply control method, comprising:

acquiring power supply parameters of at least two power supply modules;

determining power supply state information according to the at least two power supply parameters;

and sending the power supply state information to the at least two power supply modules so that the at least two power supply modules supply power according to the power supply state information.

2. The method of claim 1, prior to obtaining power supply parameters for at least two power supply modules, further comprising:

detecting the connection condition with each power supply module;

and sending an in-place signal to the power supply module which is successfully connected under the connection condition, so that the power supply module receiving the in-place signal closes the charging switch.

3. The method of claim 1, wherein obtaining power supply parameters for at least two power supply modules comprises:

awakening the main control circuits of at least two power supply modules so that the main control circuits read power supply parameters of the power supply modules;

and receiving power supply parameters sent by at least two main control circuits.

4. The method of claim 1, wherein determining power supply status information based on at least two power supply parameters comprises:

performing pairwise difference calculation on the at least two power supply parameters to obtain at least one calculation result;

and determining power supply state information according to the absolute value of the at least one calculation result.

5. The method of claim 4, wherein determining power supply status information based on an absolute value of the at least one calculation comprises:

if the absolute values of the at least one calculation result are all smaller than a preset threshold value, determining that the power supply state information is the starting information;

correspondingly, the sending the power supply state information to the at least two power supply modules so that the at least two power supply modules supply power according to the power supply state information includes:

and sending the starting information to the at least two power supply modules so that the at least two power supply modules start a charging and discharging switch.

6. The method of claim 4, determining power supply status information from an absolute value of the at least one calculation, comprising:

if one or more of the absolute values of the at least one calculation result are greater than or equal to a preset threshold, determining that the power supply state information is closing information;

correspondingly, the sending the power supply state information to the at least two power supply modules so that the at least two power supply modules supply power according to the power supply state information includes:

and sending the closing information to the at least two power supply modules so as to enable the at least two power supply modules to close the charging switch.

7. A power supply control system is characterized by comprising a system control module and at least two power supply modules;

the power supply port of the power supply module is connected with the power supply port of the system control module and used for supplying power to the system control module; the communication port of the power supply module is connected with the communication port of the system control module;

the system control module is used for acquiring power supply parameters of at least two power supply modules, determining power supply state information according to the at least two power supply parameters, and sending the power supply state information to the at least two power supply modules;

the at least two power supply modules are used for supplying power according to the received power supply state information.

8. The system of claim 7, wherein the power module comprises a battery pack, a master control circuit and a master loop switch;

the battery pack is connected with the main control circuit and used for supplying power to the main control circuit;

the main control circuit is connected with the system control module through a communication port and used for sending power supply parameters of a power supply module to the system control module, receiving power supply state information sent by the system control module and determining a first control signal according to the power supply state information;

the main control circuit is connected with the main loop switch and used for sending the first control signal to the main loop switch;

the main loop switch is connected with the battery pack and used for controlling the battery pack to supply power to external equipment according to the first control signal.

9. The system of claim 8, wherein the power supply module further comprises a signal receiving device, and the signal receiving device is connected to the main control circuit, and is configured to receive a start signal and send the start signal to the main control circuit; and the main control circuit determines a second control signal according to the starting signal and sends the second control signal to the main loop switch, so that the main loop switch controls the battery pack to supply power to the system control module according to the second control signal.

10. An apparatus, characterized in that the apparatus comprises:

one or more processors;

storage means for storing one or more programs;

when executed by the one or more processors, cause the one or more processors to implement the power supply control method of any one of claims 1-6.

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