WO2021142595A1

WO2021142595A1 - Charging control method, charger, charging system, and storage medium

Info

Publication number: WO2021142595A1
Application number: PCT/CN2020/071858
Authority: WO
Inventors: 张彩辉
Original assignee: 深圳市大疆创新科技有限公司
Priority date: 2020-01-13
Filing date: 2020-01-13
Publication date: 2021-07-22
Also published as: CN112823461A

Abstract

Provided is a charging control method, said method comprising: performing constant-current charging on a battery (S101); obtaining charging parameters and/or battery parameters when the battery is charged with the constant current, and determining, according to the charging parameters and/or battery parameters, whether the battery ends the constant-current charging (S102); if the battery ends the constant-current charging, then charging the battery using a preset charging policy (S103).

Description

Charging control method, charger, charging system and storage medium

Technical field

This application relates to the field of battery technology, and in particular to a charging control method, a charger, a charging system, and a storage medium.

Background technique

Batteries are used to power electronic devices, such as lithium batteries used to power agricultural drones. When the battery is out of power, the battery needs to be charged so that the agricultural drone can continue to complete the operation. However, the existing battery charging process generally includes trickle The charging time is longer in the current charging phase, constant current charging phase, and constant voltage charging phase. Since agricultural drones require rapid cyclic operations during operation, the existing charging methods cannot meet the requirements for cyclic operations of agricultural drones.

Summary of the invention

Based on this, the present application provides a charging control method, a charger, a charging system, and a storage medium to improve the charging efficiency of the battery and realize fast charging.

In the first aspect, this application provides a charging control method using a charger, and the method includes:

Performing constant current charging on the battery;

Acquiring the charging parameters and/or battery parameters when the battery is charged with the constant current, and determining whether the battery enters the constant voltage charging stage according to the charging parameters and/or the battery parameters;

If the battery enters the constant voltage charging phase, charge the battery by using a preset charging strategy corresponding to the constant voltage charging phase;

The preset charging strategy includes one of the following: stopping charging, stopping charging after a preset period of time, and stopping charging when the charging current drops to a preset cut-off current.

In addition, this application also provides another charging control method, which is applied to a charger, and the charger is used to charge a battery; the method includes:

Determine whether the battery includes reserved capacity;

If the battery includes the reserved capacity, charge the battery with a constant current;

After the battery finishes the constant current charging, charging the battery using a preset charging strategy corresponding to the constant voltage charging stage;

In addition, this application also provides another charging control method, which is applied to a charger, and the method includes:

Performing constant current charging on the battery;

Acquiring charging parameters and/or battery parameters when performing the constant current charging on the battery, and determining whether the battery ends the constant current charging according to the charging parameters and/or battery parameters;

If the battery ends the constant current charging, charge the battery using a preset charging strategy;

In addition, the present application also provides another charging control method, which is applied to a charger, and the charger is used to charge a battery. The method includes:

Charging the battery in a first preset charging mode;

After the battery is charged in the first preset charging mode, charging the battery using a preset charging strategy;

In the second aspect, the present application also provides a charger, characterized in that the charger includes a processor, a memory, and a charging circuit;

The charging circuit is connected to the processor and is used to charge the battery;

The memory is used to store a computer program;

The processor is used to execute the computer program and, when executing the computer program, implement the steps of the charging control method described above.

In a third aspect, the present application also provides a charging system, the charging system includes the charger described in any one of the above and a battery, and the charger is used to charge the battery.

In a fourth aspect, the present application also provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the processor realizes the charging control method described above.

The charging control method, charger, charging system and storage medium proposed in this application can directly charge the battery with constant current; obtain the charging parameters and/or battery parameters when the battery is charged with the constant current, and Determine whether the battery enters the constant voltage charging phase according to the charging parameters and/or battery parameters; when the battery enters the constant voltage charging phase, charge the battery using a preset charging strategy corresponding to the constant voltage charging phase; The preset charging strategy includes one of the following: stopping charging, stopping charging after a preset period of time, and stopping charging when the charging current drops to a preset cut-off current. For example, when the battery is charged with a constant current, and when it is determined to enter the constant voltage charging stage, the battery is stopped charging, thereby completing the charging of the battery. In turn, the rapid charging of the battery is realized, and the service life of the battery can also be improved.

It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the application.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the following will briefly introduce the drawings used in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present application. Ordinary technicians can obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic block diagram of a charging system provided by an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a battery provided by an embodiment of the present application;

Fig. 3 is a schematic diagram of a charging curve of a battery provided by an embodiment of the present application;

4 is a schematic flowchart of steps of a charging control method provided by an embodiment of the present application;

FIG. 5 is a schematic flowchart of steps of another charging control method provided by an embodiment of the present application;

6 is a schematic diagram of another application scenario of the charging control method provided by the embodiment of the present application;

FIG. 7 is a schematic flowchart of steps of another charging control method provided by an embodiment of the present application;

FIG. 8 is a schematic diagram of another application scenario of the charging control method provided by the embodiment of the present application;

9 is a schematic flowchart of steps of another charging control method provided by an embodiment of the present application;

FIG. 10 is a graph of charging voltage when a battery is short-circuited according to an embodiment of the present application; FIG.

FIG. 11 is a graph of the charging voltage when the battery is not short-circuited according to an embodiment of the present application; FIG.

FIG. 12 is a schematic flowchart of steps of yet another charging control method provided by an embodiment of the present application; FIG.

Fig. 13 is a schematic block diagram of a charger provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

The flowchart shown in the drawings is only an example, and does not necessarily include all contents and operations/steps, nor does it have to be executed in the described order. For example, some operations/steps can also be decomposed, combined or partially combined, so the actual execution order may be changed according to actual conditions.

The embodiments of the present application provide a charging control method, a charger, a charging system, and a storage medium. The charging control method is applied to the charger to realize rapid charging of the battery and at the same time increase the service life of the battery. This method can charge the battery in a first preset charging mode; after the battery is charged in the first preset charging mode, the battery is charged using a preset charging strategy; wherein, the preset The charging strategy includes the following: stop charging, stop charging after a preset period of time, and stop charging when the charging current drops to a preset cut-off current.

Hereinafter, some embodiments of the present application will be described in detail with reference to the accompanying drawings. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

Please refer to FIG. 1, which is a schematic block diagram of a charging system provided by an embodiment of the present application. The charging system 100 includes a charger 10 and a battery 20. The charger 10 is used to connect an external power source to charge the battery 20, and the battery 20 is used to power electronic devices, for example, to power a movable platform and a load carried on the movable platform.

In the embodiment of the present application, the charger 10 includes a Microcontroller Unit (MCU), which is used to execute the charging control method provided in the present application, so as to improve the charging efficiency and service life of the battery.

Wherein, the micro control unit of the charger 10 is used to obtain the charging parameters and/or battery parameters of the battery. Among them, the charging parameters include charging time, charging current, and/or charging voltage, etc.; battery parameters include battery voltage, battery current, and/or battery capacity, etc.

Among them, the micro-control unit of the charger 10 is used to obtain pre-stored charging parameters. For example, the preset charging cut-off voltage is used to indicate that the battery enters the constant voltage charging phase from the constant current charging stage; for another example, the preset charging cut-off current is used for It characterizes that the battery enters the constant voltage charging stage from the constant current charging stage.

In some embodiments, the preset charging cut-off voltage may be a constant voltage charging voltage; the preset charging cut-off current may be a constant current charging current.

In some embodiments, the battery 20 may also include a micro-control unit, or a battery management system (Battery Management System, BMS), and the battery management system includes a micro-control unit.

Among them, the micro-control unit is used to obtain the battery parameters of the battery and process the battery parameters, such as charging current, charging voltage, charging time, discharging current, discharging current, discharging time, constant voltage charging time, constant voltage charging capacity and The charge-discharge capacity ratio and so on. And send these battery parameters to the micro control unit of the charger 10.

The battery management system can be used to estimate the State of Charge (SOC), that is, the remaining battery power, to ensure that the SOC is maintained within a reasonable range, and to prevent damage to the battery due to overcharge or overdischarge.

During the battery charging and discharging process, the battery management system can also collect the battery voltage, temperature, and charging and discharging current in real time to prevent the battery from being overcharged or overdischarged.

Among them, movable platforms include aircraft, robots, electric vehicles or autonomous unmanned vehicles.

For example, the battery 20 supplies power to the motor of the aircraft to control the rotation of the propeller of the motor, so as to realize the flight of the aircraft; for another example, the battery 20 supplies power to the camera camera mounted on the aircraft for aerial photography and so on.

Among them, the aircraft includes drones, which include rotary-wing drones, such as four-rotor drones, hexa-rotor drones, and octo-rotor drones. It can also be a fixed-wing drone or It is a combination of rotary-wing and fixed-wing drones, and is not limited here.

According to different applications, UAVs are divided into consumer UAVs, aerial photography UAVs, through UAVs or agricultural plant protection machines. In the application of these UAVs, sometimes cycle operations are required, and fast charging is required to meet operational requirements and improve the completion efficiency of cycle operations.

Among them, the robots include educational robots, which use a Mecanum wheel omnidirectional chassis, and are equipped with multiple pieces of intelligent armor. Each intelligent armor has a built-in impact detection module that can quickly detect physical strikes. At the same time, it also includes a two-axis pan/tilt, which can be flexibly rotated, matched with the transmitter to accurately, stably and continuously fire crystal bombs or infrared beams, and with ballistic light effects, giving users a more realistic shooting experience.

In some embodiments, in order to cooperate with the scenario of cyclic operation or fast charging, it can be ensured that the battery power meets the requirements of the operation. As shown in FIG. 2, the battery 20 includes a working capacity and a reserved capacity. By using the charging control method provided in the embodiment of the present application, the working capacity of the battery can be quickly filled with the reserved capacity, so as to meet the requirements of the operation, and at the same time Improve the charging efficiency of the battery.

Currently, battery charging generally includes a pre-charging phase, a constant current charging phase, a constant voltage charging phase, and a recharging phase. Specifically, as shown in Figure 3, the charger uses the pre-charge current I ₀ to pre-charge the battery at the beginning. After a period of time t ₀ , the battery is charged with a constant current I ₁ and the charging current in the constant-current charging stage remains unchanged. And the corresponding charging time is t ₁ . As the charging continues, the battery voltage is getting higher and higher. When the charging reaches 90-95%, the battery voltage reaches the charging limit voltage U ₁ , and can no longer be charged with a constant current. It needs to be converted to constant voltage charging, that is, it enters the constant voltage charging stage. , The charging time corresponding to the constant voltage charging stage is t ₂ , the charging voltage does not change, and the charging current gradually decreases. Finally, it enters the recharging phase. In the recharging phase, the charging voltage first drops to the recharging voltage threshold U ₂ , and then rises to the charging limit voltage U ₁ , and the corresponding charging time is t ₃ .

Pre-charging, also known as trickle charging, is used to pre-charge a fully discharged battery, that is, restorative charging. The trickle charging current is generally about one-tenth of the constant current charging current.

Constant current charging. When the battery voltage rises to the pre-charge voltage threshold U ₀ , the charging current is increased to perform constant current charging. The battery voltage during the constant current charging phase gradually rises with the constant current charging process, and the charging power in the constant current charging phase is in the battery About 90%-95% of capacity.

Constant voltage charging. When the battery voltage rises to the charging limit voltage U ₁ , the constant current charging ends, and the battery starts the constant voltage charging stage. The current decreases slowly according to the saturation of the battery cell and with the charging process, until it decreases to the preset value. The charging current I _{0 is} considered to be terminated. If the charger is not disconnected from the battery at this time, the battery may enter the recharging phase.

It should be noted that in the above four charging stages, the charging power in the constant current charging stage is about 90%-95% of the battery capacity, and the charging power in the constant voltage charging stage is about 5% of the battery capacity. The other two It can be almost negligible. Among them, the constant voltage charging stage occupies a large amount of charging time during the entire charging of the battery, which is even longer than the charging time of the constant current charging stage.

Taking 1C charging as an example, the time from 0% to 95% charging is about 57 minutes, plus 20 minutes in the constant voltage charging stage and the charging time in the pre-charging stage, the entire charging process is longer than 77 minutes; taking 3C charging as an example, from The charging time from 0% to 95% is about 19 minutes, plus the 20 minutes in the constant voltage charging stage and the charging time in the pre-charging stage, the entire charging process is longer than 39 minutes; taking 5C charging as an example, charging from 0% to 95% The time is about 11.4 minutes, plus the 20 minutes of the constant voltage charging stage and the charging time of the pre-charging stage, the entire charging process is longer than 31.4 minutes. Among them, 1C, 3C and 5C are the charging rates of the battery.

It can be seen that, using the above charging process, the battery generally requires a longer charging time, which cannot meet the requirements of cyclic operation and other fast charging.

To this end, the embodiments of the present application provide a charging control method, a charger, a charging system, and a storage medium, which can realize fast charging, meet the requirements of cyclic operation, and at the same time increase the service life of the battery.

Please refer to FIG. 4, which is a schematic flowchart of steps of a charging control method provided by an embodiment of the present application. The charging control method is applied to a charger to charge the battery and realize rapid charging of the battery.

It should be noted that in the embodiment of the present application, a preset charging strategy is pre-configured during the constant voltage charging phase of the charger, so that the charger uses the preset charging strategy to charge the battery during the constant voltage charging phase.

Among them, the preset charging strategy includes the following: stop charging, stop charging after a preset period of time, and stop charging when the charging current drops to a preset cut-off current.

Stop charging, that is, no longer charge the battery. For example, the charger automatically disconnects the charging circuit; for example, it sends a stop command to the micro-control unit of the battery to make the battery disconnect the charging switch to stop charging; for another example, the charger automatically disconnects the charging circuit and outputs a prompt message to remind you The user battery level has been completed.

After charging for a preset time, stop charging. The preset time is set according to actual needs, for example, the preset time is 1 minute, 2 minutes, or 3 minutes. Stop charging after charging the preset time period; or stop charging after charging the preset time period, and output a prompt message to remind the user that the battery power is complete. The preset duration of the charging is the constant voltage charging stage.

Stop charging when the charging current drops to the preset cut-off current. For example, the constant current charging current is 5.0A. The preset cut-off current can be set to 4.9A, 4.8A or 4.7A. The specific value is not limited here. When the charging current of the battery drops to the preset cut-off current, for example, when it drops to 4.9A, stop charging; or, when the charging current of the battery drops to the preset cut-off current, stop charging, and output a prompt message to remind the user of the battery level completed.

In some embodiments, the size of the preset duration has a negative correlation with the size of the charging rate of the charger. For example, when the charging rate of the charger is 1C, the preset duration is set to 3 minutes; when the charging rate of the charger is 3C, the preset duration is set to 2 minutes; when the charging rate of the charger is 5C, the preset duration is set to 1 minute. Since the charging rate is 1C, 3C, and 5C, the corresponding constant current charging durations are different, so setting the preset duration with a negative correlation relationship can control the constant voltage charging duration accordingly. It satisfies the user's demand for fast charging of the battery, while taking into account the battery power, thereby improving the user experience.

In some embodiments, the preset cut-off current has a positive correlation with the charging rate of the charger. For example, when the charging rate of the charger is 1C, the preset cut-off current is set to 4.7A; when the charging rate of the charger is 3C, the preset cut-off current is set to 4.8A; when the charging rate of the charger is 5C, the preset time The preset cut-off current is set to 4.9A. Since the charging rate is 1C, 3C, and 5C, the corresponding constant current charging durations are different, so setting the preset cut-off current with a positive correlation can control the constant voltage charging duration accordingly. It satisfies the user's demand for fast charging of the battery, while taking into account the battery power, thereby improving the user experience.

As shown in FIG. 4, the charging control method includes steps S101 to S103.

S101: Perform constant current charging on the battery.

Specifically, it refers to charging the battery with a constant current, that is, the battery is currently in a constant current charging stage. For example, as shown in Figure 3, the battery is charged _{with a constant current I 1.}

In some embodiments, in order to better realize the rapid charging of the battery, the battery may be charged with a constant current when the battery is connected. Specifically: determining whether there is a battery connected; if it is determined that a battery is connected, charging the battery with a constant current. As a result, pre-charging stage charging can be avoided, the charging time of the battery is further shortened, the charging efficiency of the battery is improved, and rapid charging is realized.

Specifically, when the micro-control unit of the charger detects that a battery is inserted into its charging interface, it can determine that a battery is connected.

Of course, it is also possible to precharge the battery first (that is, trickle charge), and then charge the battery with constant current after the precharge ends.

S102: Obtain a charging parameter and/or battery parameter when the battery is charged with the constant current, and determine whether the battery enters a constant voltage charging stage according to the charging parameter and/or battery parameter.

Specifically, the charging parameters used to characterize the end of constant current charging or the entering of the constant voltage charging phase are obtained, or the battery parameters used to characterize the end of constant current charging or the entering of the constant voltage charging phase are obtained. Determine whether the battery enters the constant voltage charging stage according to the charging parameters and/or the battery parameters.

Exemplarily, for example, obtaining the current battery voltage of the battery, and determining whether the battery enters the constant voltage charging stage according to the current battery voltage. Wherein, determining whether the battery enters the constant voltage charging stage according to the current battery voltage is specifically: obtaining a preset charging cut-off voltage, which is used to indicate that the battery enters the constant voltage charging stage from the constant current charging stage; The battery voltage and the preset charging cut-off voltage determine whether the battery enters the constant voltage charging stage.

For example, it is determined whether the difference between the current battery voltage and the preset charging cut-off voltage is less than the preset voltage threshold, and if the difference between the current battery voltage and the preset charging cut-off voltage is less than the preset voltage threshold, it is determined that the battery enters the constant voltage charging stage.

For example, if the current battery voltage is 4.25V, the preset charging cut-off voltage is 4.20V, and the preset voltage threshold is set to 0.1V, it can be determined that the battery enters the constant voltage charging stage. The preset voltage threshold can quickly determine whether the battery enters the constant voltage charging stage.

For example, it is determined whether the current battery voltage is greater than or equal to the preset charging cut-off voltage; if the current battery voltage is greater than or equal to the preset charging cut-off voltage, it is determined that the battery enters the constant voltage charging stage.

For example, the current battery voltage is 4.21V, and the preset charging cut-off voltage is 4.20V, so it can be determined that the battery enters the constant voltage charging stage. By determining whether the current battery voltage is greater than or equal to the preset charging cut-off voltage, it can be accurately determined whether the battery enters the constant voltage charging stage.

It should be noted that the specific values of the preset charging cut-off voltage and the preset voltage threshold are not limited here, and are set according to the battery type and parameters.

Exemplarily, for another example, the current charging current of the battery is obtained; according to the current charging current and voltage, it is determined whether the battery enters the constant voltage charging stage. Among them, determine whether the battery enters the constant voltage charging stage according to the current charging current and voltage, specifically: obtaining the preset charging cut-off current, the preset charging cut-off current is used to characterize the battery from the constant current charging stage to the constant voltage charging stage; according to the current charging current And the preset charging cut-off current to determine whether the battery enters the constant voltage charging stage.

For example, it is determined whether the difference between the preset charging cut-off current and the current charging current is less than the preset current threshold; if the difference between the preset charging cut-off current and the current charging current is less than the preset current threshold, it is determined that the battery enters the constant voltage charging stage.

For example, the preset charging cut-off current is 5.0A, the current charging current is 4.95A, and the preset current threshold is 0.1A. The difference between the preset charging cut-off current and the current charging current is 0.05A, which is less than the preset current threshold 0.1A. This confirms that the battery enters the constant voltage charging phase. The preset current threshold can quickly determine that the battery enters the constant voltage charging phase.

For example, it is determined that the current charging current is less than the preset charging cut-off current; if the current charging current is less than the preset charging cut-off current, it is determined that the battery enters the constant voltage charging stage.

For example, the preset charging cut-off current is 5.0A, and the current charging current is 4.99A, which determines that the battery enters the constant voltage charging stage. By determining that the current charging current is less than the preset charging cut-off current, it can be accurately determined that the battery enters the constant voltage charging stage.

For another example, monitor the charging current of the battery; determine the change trend of the charging current of the battery; if the change trend changes from a steady trend to a downward trend, it is determined that the battery enters the constant voltage charging stage.

Specifically, as shown in Figure 3, when the monitored charging current change trend is the current curve in Figure 3, and the current curve changes from a steady trend to a downward trend (that is, when an inflection point occurs), it is determined that the battery enters constant voltage charging. stage.

When it is determined that the battery enters the constant voltage charging phase, a prompt is given to the battery to enter the constant voltage charging phase to remind the user that the battery has entered the constant voltage charging phase. Specifically, the prompt method includes at least one of the following: voice prompt, display prompt, and vibration prompt. Voice prompts include voice broadcast, buzzer prompts, etc.; display prompt information such as text and animation, or form light prompts through indicator lights.

S103: If the battery enters the constant voltage charging phase, charge the battery using a preset charging strategy corresponding to the constant voltage charging phase.

Exemplarily, if it is determined that the battery enters the constant voltage charging stage, the battery is stopped continuously charging; or the battery is stopped continuing to be charged and a prompt message is output to remind the user that the battery charging is completed.

Exemplarily, if it is determined that the battery enters the constant voltage charging stage, stop charging the battery after the preset duration of charging in the constant voltage charging stage; or stop charging the battery after the preset duration of charging in the constant voltage charging stage, and output Prompt message to remind user that battery charging is completed. For example, stop charging the battery after 1 minute in the constant voltage charging phase.

Exemplarily, if it is determined that the battery enters the constant voltage charging phase, continue to charge the battery during the constant voltage charging phase until the charging current drops to the preset cut-off current, stop charging the battery; or, continue to charge the battery during the constant voltage charging phase Stop charging the battery when the charging current drops to the preset cut-off current, and output a prompt message to remind the user that the battery has been charged. For example, the battery enters the constant voltage charging stage, and the battery is charged at a constant voltage. When the charging current drops to 4.9A, the battery stops continuing to charge.

In some embodiments, when the charger uses the charging control method to charge the battery, it can also record the charging information of the battery, where the charging information includes at least one of the following: constant current charging time, constant current charging time corresponding The charging current corresponding to the charging current, constant voltage charging time, and constant voltage charging time. In order to analyze the battery status based on the charging information in the follow-up, improve the charging method, such as whether the battery status is abnormal, the service life and so on.

The charging control method provided by the foregoing embodiments can be specifically applied to unmanned aerial vehicles, such as agricultural plant protection machines. This charging control method can be used to achieve rapid charging, so that the agricultural plant protection machines can improve agriculture without requiring more batteries. The cycle efficiency of the plant protection machine reduces the cost, and at the same time increases the service life of the battery.

It can be seen that the charger can realize the rapid charging of the battery by using the charging control method disclosed in the above embodiment, and improve the efficiency of the cycle operation. In the process of realizing fast charging, the battery is "shallowly charged and discharged", which further improves the service life of the battery.

Please refer to FIG. 5, which is a schematic flowchart of steps of another charging control method provided by an embodiment of the present application. The charging control method is applied to the charger to charge the battery and realize the rapid charging of the battery.

As shown in FIG. 5, the charging control method includes steps S201 to S204.

S201: Determine whether the charger uses a fast charging mode, and a preset charging strategy is used to charge the battery in a constant voltage charging phase of the fast charging mode;

S202: If the charger uses the fast charge mode, charge the battery with a constant current;

S203: Obtain charging parameters and/or battery parameters when performing the constant current charging on the battery, and determine whether the battery enters a constant voltage charging stage according to the charging parameters and/or battery parameters;

S203: If the battery enters the constant voltage charging phase, charge the battery using a preset charging strategy corresponding to the constant voltage charging phase.

In the embodiment of the present application, the fast charging mode may only include a constant current charging phase; or, the fast charging mode may include a constant current charging phase and a constant voltage charging phase, and the constant voltage charging phase corresponds to a preset charging strategy.

Wherein, determining whether the charger uses the fast charge mode to charge the battery specifically includes: determining whether the user selects the fast charge mode; if the user selects the fast charge mode, control the charger to use the fast charge mode to charge the battery.

Specifically, as shown in FIG. 6, the charger 10 is used to charge the battery installed in the drone 30. For example, the charger 10 is provided with a button corresponding to the fast charging mode, that is, the user can select the fast charging mode by pressing the button; or, the charger 10 is provided with a touch screen, and the touch screen displays the fast charging mode for The user selects; or, the charger 10 receives an instruction to select the fast charge mode sent by other terminal devices, such as a mobile phone, and controls the charger to use the fast charge mode to charge the battery according to the instruction.

In some embodiments, the fast charging mode may be set as the default charging mode of the charger. For example, the charger 10 in FIG. 6 is the charger of the agricultural plant protection machine 30. Since the agricultural plant protection machine 30 needs to be operated in a cycle, the default charging mode of the charger can be set to the fast charging mode.

In addition, if the user does not select the fast charge mode, the charger is controlled to use the slow charge mode to charge the battery; wherein, the slow charge mode includes at least a constant current charging stage and a constant voltage charging stage, and the preset is not used in the constant voltage charging stage The charging strategy charges the battery. For example, the slow charge mode includes trickle charge stage, constant current charge stage and constant voltage charge stage. In order to facilitate users to choose according to their needs, thereby improving the user experience.

In some embodiments, after the battery is charged with a preset charging strategy corresponding to the constant voltage charging stage, charging instruction information may be sent to the battery, where the charging instruction information includes a remaining power threshold. This allows the battery to save the charging instruction information after receiving the charging instruction information, and stop discharging when the remaining power when the battery is powered reaches the remaining power threshold.

For example, the remaining power threshold may be 2% of the battery power, of course, other values are also possible, which are not limited here. When the battery supplies power to the load, if it detects that the remaining power is 2%, the discharging is stopped, so that the battery can save at least 2% of the power.

In some embodiments, in order to realize fast charging of the battery and improve the user experience. You can determine whether to use the fast charge mode to charge the battery according to the remaining power of the battery. Correspondingly, by obtaining the remaining power of the battery, according to whether the remaining power of the battery is greater than or equal to the remaining power threshold; if the remaining power of the battery is greater than or equal to the remaining power threshold, it is determined that the charger uses the fast charge mode.

Since the fast charging mode provided by the embodiment of the present application corresponds to a preset charging strategy, the charging time is greatly shortened, thereby improving the charging efficiency of the battery. At the same time, "shallow charge and shallow discharge" can be realized. "Shallow charge and shallow discharge" means that the battery is not fully charged during charging and is not discharged during discharge, thereby increasing the service life of the battery.

Please refer to FIG. 7, which is a schematic flowchart of steps of another charging control method provided by an embodiment of the present application. The charging control method is applied to a charger to charge the battery and realize rapid charging of the battery.

It should be noted that a preset charging strategy is pre-configured during the constant voltage charging phase of the charger, so that the charger uses the preset charging strategy to charge the battery during the constant voltage charging phase.

Among them, the battery includes reserved capacity. For example, as shown in FIG. 2, the battery 20 may include a working capacity and a reserved capacity. The working capacity meets the operation requirements, and the reserved capacity can ensure that when the battery is charged using the charging control method provided in this application, fast charging can be achieved, and It can ensure that job requirements are met.

For example, agricultural drones need to operate cyclically. In order to improve operating efficiency, when setting up the battery of agricultural drones, the working capacity is preset to 18Ah, and the reserved capacity is 0.9Ah.

In some embodiments, the method for charging the battery may be: determining whether the battery includes a reserved capacity; if the battery includes the reserved capacity, a preset charging strategy is used to charge the battery. The preset charging strategy may be: constant current charging of the battery; after the constant current charging of the battery is completed, the following charging methods are used to charge the battery: stop charging, stop charging after a preset period of time, and stop charging after charging for a preset period of time. Stop charging when the current drops to the preset cut-off current. The condition for ending the constant current charging of the battery may be the charging parameter and/or battery parameter when the battery is performing the constant current charging, and it is determined whether the constant current charging phase of the battery is over according to the charging parameter and/or battery parameter . In some embodiments, the working capacity and the reserved capacity are determined according to the ratio of the charging power of the constant current charging and the constant voltage charging. For example, if the charging power corresponding to constant current charging is 90%, the charging power corresponding to constant voltage charging is 5%, and the working capacity required for operation is 18Ah, the reserved capacity can be set to 0.9Ah.

As shown in FIG. 7, the charging control method may include step S301 to step S304.

S301: Determine whether the battery includes reserved capacity;

S302: If the battery includes the reserved capacity, perform constant current charging on the battery;

S303: After the constant current charging of the battery is completed, the battery is charged using a preset charging strategy;

Obtain the battery capacity of the battery, and determine whether the battery includes the reserved capacity according to the battery capacity. For example, if the obtained battery capacity is 18.9 Ah, it can be determined that the battery capacity of the battery includes the reserved capacity. Therefore, it can be determined that the battery to be charged is the battery carried by the agricultural drone, and it needs to be charged in a fast charging method.

Because the battery capacity of the battery is generally an integer, if the value corresponding to the reserved capacity is included, it can be determined that the battery includes the reserved capacity. In order to determine whether the battery includes reserved capacity more conveniently and preparedly, the reserved capacity can be set to an uncommon capacity value, such as 0.93Ah. If the battery capacity of the battery is detected as 18.93Ah, it can be determined that the battery includes the reserved capacity. Reserve capacity.

As shown in Figure 8, when the charger is charging the battery, if it is determined that the battery includes the reserved capacity, the battery is charged with a constant current. If the battery includes the reserved capacity, the battery is charged with constant current; after the constant current charging of the battery is completed, the battery is charged with a preset charging strategy; wherein, the preset charging strategy includes the following One: stop charging, stop charging after a preset period of time, and stop charging when the charging current drops to the preset cut-off current.

In some embodiments, the charging parameters and/or battery parameters when the battery is charged with constant current are obtained, and according to the charging parameters and/or battery parameters, it is determined whether the battery ends the constant current charging; after determining that the battery ends the constant current charging, adopt The battery is charged with a preset charging strategy, such as stopping charging, stopping charging after a preset period of time, or stopping charging when the charging current drops to a preset cut-off current. As a result, the charging time of the battery can be shortened and the service life of the battery can be increased.

In some embodiments, after the constant current charging of the battery is completed, the charging parameters and/or battery parameters when the battery is charged with constant current are obtained, and it is determined whether the battery enters the constant voltage charging according to the charging parameters and/or the battery parameters. Stage: After confirming that the battery enters the constant voltage charging stage, use the preset charging strategy corresponding to the constant voltage charging stage to charge the battery, such as stopping charging, stopping charging after a preset duration of charging, or stopping when the charging current drops to the preset cut-off current Charge. As a result, the charging time of the battery can be shortened and the service life of the battery can be increased.

In some embodiments, it may also be determined whether there is battery access; if it is determined that there is battery access, step S301 is executed. That is, when the battery is connected, the charging control method provided in the embodiment of the present application is used to charge the battery. As a result, the charging time of the battery is greatly shortened, and rapid charging is realized.

Of course, in some embodiments, when it is determined that the battery includes the preset capacitor, the battery may be trickle-charged first, and then constant-current charging is performed.

In some embodiments, it is also possible to first determine whether the charger uses the fast charge mode. The constant voltage charging stage of the fast charge mode uses a preset charging strategy to charge the battery; if the charger uses the fast charge mode, perform the The step of constant current charging of the battery.

It should be noted that the fast charging mode may only include a constant current charging phase; or, the fast charging mode may only include a constant current charging phase and a constant voltage charging phase.

Wherein, determining whether the charger uses the fast charging mode to charge the battery specifically includes: determining whether the user selects the fast charging mode; if the user selects the fast charging mode, controlling the charger to use the fast charging mode to charge the battery.

In addition, if the user does not select the fast charge mode, the charger is controlled to use the slow charge mode to charge the battery.

Wherein, the slow charging mode includes at least a constant current charging phase and a constant voltage charging phase, and the preset charging strategy is not used to charge the battery in the constant voltage charging phase.

For example, the slow charging mode includes a trickle charging phase, a constant current charging phase, and a constant voltage charging phase.

In some embodiments, the fast charging mode may be set as the default charging mode of the charger.

In some embodiments, after the battery is charged with a preset charging strategy corresponding to the constant voltage charging stage, charging instruction information may be sent to the battery, where the charging instruction information includes a remaining power threshold; so that after the battery receives the charging instruction information Save the charging instructions, and stop discharging when the remaining power when the battery is powered reaches the remaining power threshold.

In some embodiments, in order to realize fast charging of the battery and improve the user experience. You can determine whether to use the fast charge mode to charge the battery according to the remaining power of the battery. Correspondingly, the remaining power of the battery is obtained, and it is determined whether the remaining power of the battery is greater than or equal to the remaining power threshold; if the remaining power of the battery is greater than or equal to the remaining power threshold, it is determined that the charger uses the fast charge mode.

Since the charging control method provided by the embodiments of the present application uses a preset charging strategy to charge a battery with a preset capacity in the constant voltage stage, the charging time can be greatly shortened, thereby improving the charging efficiency of the battery, and ensuring the smooth operation of the operation. conduct. At the same time, "shallow charge and shallow discharge" can be realized, thereby increasing the service life of the battery.

Please refer to FIG. 9, which is a schematic flowchart of steps of another charging control method provided by an embodiment of the present application. The charging control method is applied to a charger to charge the battery and realize rapid charging of the battery.

It should be noted that, in the embodiment of the present application, a preset charging strategy is pre-configured in the charger, so that the charger adopts the preset charging strategy to charge the battery when the constant current charging ends.

As shown in FIG. 9, the charging control method includes steps S401 to S403.

S401: Perform constant current charging on the battery;

S402: Acquire charging parameters and/or battery parameters when performing the constant current charging on the battery, and determine whether the battery ends the constant current charging according to the charging parameters and/or battery parameters;

S403: If the constant current charging of the battery ends, a preset charging strategy is used to charge the battery.

In some embodiments, it can be determined whether there is battery access; if it is determined that there is battery access, the battery is charged with a constant current. This eliminates the need for pre-charging, thereby greatly shortening the charging time and realizing fast charging.

In some embodiments, it is also possible to trickle charge the battery first, and then charge the battery with constant current. That is, fast charging is realized, and battery life is improved at the same time.

In some embodiments, it can also be determined whether the charger uses the fast charge mode; if the charger uses the fast charge mode, the battery is charged with a constant current. Wherein, the fast charging mode adopts a preset charging strategy to charge the battery when the constant current charging ends. Use the fast mode to realize the fast charging of the battery.

Among them, in order to shorten the charging time, realize fast charging. The fast charging mode may only include the constant current charging phase; or, the fast charging mode may only include the constant current charging phase and the constant voltage charging phase.

In some embodiments, in order to improve the user experience. Determining whether the charger uses the fast charging mode to charge the battery may specifically include: determining whether the user selects the fast charging mode; if the user selects the fast charging mode, controlling the charger to use the fast charging mode to charge the battery.

Of course, if the user does not select the fast charge mode, the charger is controlled to use the slow charge mode to charge the battery; wherein, the slow charge mode includes at least a constant current charging phase, and the preset charging strategy is not used at the end of the constant current charging phase. battery charging.

For example, the slow charge mode includes trickle charge stage, constant current charge stage and constant voltage charge stage.

In some embodiments, in order to realize fast charging, the fast charging mode may be set as the default charging mode of the charger. For example, the charger of an agricultural plant protection machine, because the agricultural plant protection machine generally needs to be operated in a cycle, the default charging mode of the charger of the agricultural plant protection machine can be set to a fast charging mode.

Among them, the charging parameter used to characterize the end of constant current charging can be obtained, or the battery parameter used to characterize the end of constant current charging can be obtained. Then determine whether the battery enters the constant voltage charging stage according to the charging parameters and/or the battery parameters.

Exemplarily, for example, acquiring the current battery voltage of the battery; acquiring a preset charging cut-off voltage, which is used to indicate that the battery enters the constant voltage charging stage from the constant current charging stage; determining whether the current battery voltage is greater than or equal to A preset charging cut-off voltage; if the current battery voltage is greater than or equal to the preset charging cut-off voltage, it is determined that the battery ends the constant current charging. Wherein, the preset charging cut-off voltage may be the constant voltage charging voltage of the battery.

Exemplarily, such as obtaining the current charging current of the battery; obtaining the preset charging cut-off current, which is used to characterize the battery from the constant current charging stage to the constant voltage charging stage; determining whether the current charging current is less than the preset charging cut-off current ; If the current charging current is less than the preset charging cut-off current, it is determined that the battery ends the constant current charging. Among them, the preset charging cut-off current may be a constant current charging current.

Exemplarily, the charging current of the battery may also be monitored; the changing trend of the charging current of the battery may be determined; if the changing trend is changed from a steady trend to a downward trend, it is determined that the battery ends the constant current charging. For example, in Fig. 3, the current curve _{starts to show a downward trend from t 1} to t ₂ , and it can be determined that the constant current charging ends.

In some embodiments, after the preset charging strategy corresponding to the constant voltage charging stage is used to charge the battery, charging instruction information may be sent to the battery, and the charging instruction information includes the remaining power threshold; so that the battery saves the charge after receiving the charging instruction information. Indicate information, and stop discharging when the remaining power when the battery is powered reaches the remaining power threshold.

In some embodiments, in order to realize fast charging of the battery and improve the user experience. You can determine whether to use the fast charge mode to charge the battery according to the remaining power of the battery. Correspondingly, the remaining power of the battery is obtained; if the remaining power of the battery is greater than or equal to the remaining power threshold, it is determined that the charger uses the fast charging mode.

At present, existing batteries, such as lithium-ion batteries, often experience some internal short-circuits during charging, such as micro-shorts, which can cause accidents such as battery failure and fire. Since the internal short circuit of the battery has a certain contingency, it brings difficulty to the detection. At present, some related detection circuits are used for short-circuit detection, but the hardware cost is increased. At the same time, there are problems such as inability to perform effective protection after a short circuit is detected.

Therefore, when using the charging control method provided in the embodiments of the present application to charge the battery, it is also possible to identify whether the battery is short-circuited and to protect it. Specifically, determine whether the battery has a short circuit according to the battery parameters; if the battery has a short circuit, determine the battery protection strategy corresponding to the battery short circuit; control the battery to execute the battery protection strategy.

Wherein, the battery parameter includes at least one of a charge-discharge capacity ratio, a charge voltage, and a charge time. The charge-discharge capacity ratio is the ratio of the charge capacity and the discharge capacity, and the charge capacity and the discharge capacity are calculated by the ampere-hour integral.

You can determine whether the battery is short-circuited by judging whether the battery parameters are abnormal. For example, it is determined whether the battery parameter is abnormal by comparing with the standard parameter, and the standard parameter is the parameter when the battery is normal.

Exemplarily, determining whether the battery has a short circuit according to the battery parameters is specifically: obtaining the standard parameters of the battery; determining whether the battery has a short circuit according to the difference between the battery parameters and the standard parameters.

For example, to determine whether the difference between the battery parameters and the standard parameters is within the preset range; if the difference between the battery parameters and the standard parameters is within the preset range, it is determined that the battery does not have a short circuit; if the difference between the battery parameters and the standard parameters is If the difference is not within the preset range, it is determined that the battery is short-circuited. The preset range can accurately determine whether the battery is short-circuited.

Among them, the preset range is set according to the type of battery. Different types of batteries have different preset ranges. Different types of batteries include different battery capacities or different battery cell materials, such as lithium ion batteries and lead storage batteries.

For another example, determine whether the battery parameter is greater than the standard parameter; if the battery parameter is greater than the standard parameter, it is determined that the battery has a short circuit; if the battery parameter is less than or equal to the standard parameter, it is determined that the battery does not have a short circuit. This can quickly determine whether the battery has a short circuit.

Exemplarily, if the battery parameter is the charge-discharge capacity ratio, the standard parameter is the standard charge-discharge capacity ratio. Determine whether the battery is short-circuited, specifically: determine whether the charge-discharge capacity ratio is greater than the standard charge-discharge capacity ratio; if the charge-discharge capacity ratio is greater than the standard charge-discharge capacity ratio, determine whether the battery is short-circuited; if the charge-discharge capacity ratio is less than or equal to the standard charge-discharge capacity ratio Discharge capacity ratio, it is determined that the battery does not have a short circuit.

In the normal state, the charge-discharge capacity ratio of the battery is generally in a fixed range, while the charge-discharge capacity ratio of the short-circuited battery is larger. Therefore, it can be determined whether the battery is short-circuited according to the change of the charge-discharge capacity ratio.

For example, for lithium-ion batteries, the charge-discharge capacity ratio will fluctuate in the range of 1.01-1.05 under normal conditions, while for lithium-ion batteries with micro-short circuits, the charge-discharge capacity ratio will be much greater than 1, which is based on the charge-discharge capacity ratio. Change to determine whether the battery is short-circuited. For example, when the charge-discharge capacity ratio is greater than 1.1, it can be determined that the battery has a micro short circuit.

In some embodiments, in order to accurately determine whether the battery is short-circuited, the corresponding charging voltage and charging time can also be obtained when the battery is being charged. The charging voltage and charging time are used to indicate the battery parameters of the battery to determine whether the battery is short-circuited. .

Correspondingly, to determine whether the battery is short-circuited, it can be determined whether the battery is short-circuited according to the corresponding charging voltage and charging time when the battery is charging.

Since the change trend of the charging voltage with the charging time when the battery is short-circuited is different from the change trend of the charging voltage with the charging time in the normal state, it can be determined whether the battery is short-circuited according to the charging voltage and the charging time.

As shown in Fig. 10, Fig. 10 is a graph showing the change trend of the charging voltage of a battery with a short circuit with the charging time; as shown in Fig. 11, Fig. 11 is a graph showing the change of the charging voltage of the battery under a normal state with the charging time. Therefore, it can be determined whether the battery is short-circuited according to the change trend graph corresponding to the charging voltage and the charging time.

It can be seen from Figure 10 and Figure 11 that the difference is more obvious in the constant voltage charging stage, in order to quickly and accurately determine whether the battery is short-circuited. The obtained charging voltage may include part of the constant voltage charging voltage; accordingly, the charging time includes at least the constant voltage charging time.

The battery protection strategy corresponding to the short-circuit of the battery is a preset battery protection strategy, and the battery protection strategy is a strategy for protecting the battery when the battery is short-circuited. The battery can be controlled by the charger to implement the battery protection strategy.

The battery protection strategy includes at least one of the following: discharging the battery to a preset voltage range corresponding to the safe storage of the battery, and controlling the battery to be in a locked state.

Of course, the battery protection strategy can also include other strategies. For example, outputting prompt information to prompt the battery for processing according to the prompt information, the prompt information may be voice prompt information, text prompt information, indicator prompt information, etc.

In some embodiments, the battery protection strategy includes a multi-level battery protection strategy. In the multi-level battery protection strategy, the protection mode of each level of the battery protection strategy is different, and the degree of short circuit corresponding to each level of the battery protection strategy is also different. In order to determine the corresponding protection strategy according to the short circuit degree of the battery, and then carry out effective and reasonable protection of the battery.

Exemplarily, the multi-level battery protection strategy includes at least one of the following: a first-level battery protection strategy, a second-level battery protection strategy, and a third-level battery protection strategy.

Among them, the first-level battery protection strategy includes: outputting prompt information for prompting the user to return for repair and maintenance.

Wherein, the second-level battery protection strategy includes: controlling the battery to enter a self-discharge procedure to discharge the battery, and/or outputting a prompt message for prompting the user that the battery is unusable.

Wherein, the third-level battery protection strategy includes: controlling the battery to be in a locked state, and/or outputting prompt information for prompting the user that the battery has been scrapped.

Specifically, the degree of short circuit corresponding to the short circuit of the battery can be determined first; and then the multi-level battery protection strategy corresponding to the short circuit can be determined according to the degree of short circuit.

For example, the degree of short circuit includes the degree of short circuit a, the degree of short circuit b, and the degree of short circuit c, respectively corresponding to the first-level battery protection strategy, the second-level battery protection strategy, and the third-level battery protection strategy.

Wherein, determining the degree of short circuit of the short circuit specifically includes: determining the degree of difference between battery parameters and standard parameters, and determining the degree of short circuit according to the degree of difference.

Exemplarily, if the ratio of the charge-discharge capacity of the battery exceeds the standard charge-discharge capacity ratio in the range of 0.05 to 0.1, it is defined as the degree of short circuit a; the charge-discharge capacity ratio of the battery exceeds the standard charge-discharge capacity ratio in the range of 0.1 to 0.2, which is defined as Short-circuit degree b: The battery's charge-discharge capacity ratio exceeds the standard charge-discharge capacity ratio by more than 0.2, which is defined as the short-circuit degree c.

For example, if the battery's charge-discharge capacity ratio is 1.20, and the standard constant voltage charging time is 1.01-1.05, the short-circuit degree of the battery can be determined as the short-circuit degree b. Therefore, it is determined that the multi-level battery protection strategy corresponding to the short-circuit of the battery is the second-level battery Protection strategy.

Specifically, the battery is discharged through a discharge resistor preset in the battery management system, and discharged to a preset voltage range; and/or, the charging switch and the discharging switch of the battery are controlled to be in an off state, so that the battery is in a locked state , That is, permanent failure.

Among them, the preset voltage range is a safe voltage range, and a range value near 0V can be set, and the specific range value is not limited here.

In some embodiments, of course, other battery protection strategies can also be adopted, such as outputting a prompt message to prompt the user that the battery is short-circuited. The prompt information includes voice prompt information, text prompt information, and/or indicator prompt information. For example, the indicator prompt information uses different LEDs to form a light language to prompt the user that the battery is short-circuited.

It is understandable that when the battery is in the charging state, it is detected that the battery is short-circuited and the charging is stopped before executing the battery protection strategy; when the battery is in the discharging state, when the safety of the mobile platform using the battery is ensured, all the steps are executed. Describe the battery protection strategy.

Exemplarily, if it is determined that the battery is short-circuited during the battery charging process, stop charging the battery, and execute the battery protection strategy.

The charging control method provided by the above embodiments can not only realize fast charging and increase the service life of the battery, but also can accurately and quickly identify whether the battery is short-circuited online, and when the battery is short-circuited, the battery protection strategy can be used to protect the battery. , Thereby improving the safety of battery use.

Please refer to FIG. 12, which is a schematic flowchart of the steps of another charging control method provided by an embodiment of the present application. The charging control method is applied to a charger to charge the battery and realize rapid charging of the battery.

As shown in FIG. 12, the charging control method includes step S501 and step S502.

S501. Charge the battery in a first preset charging mode.

S502: After charging the battery in the first preset charging mode is completed, use a preset charging strategy to charge the battery.

The first preset charging mode may be constant current charging, or trickle charging first and then constant current charging. It can also be other modes.

The charging control method uses a fast charging scenario, for example, an agricultural drone in a cyclic operation needs to be charged when the battery is insufficient.

Exemplarily, the charger performs constant current charging on the battery of the agricultural drone, and when the constant current charging of the battery of the agricultural drone is completed, the battery is charged using a preset charging strategy. For example, stop charging, or stop charging after a preset period of time, or stop charging when the charging current drops to a preset cut-off current. Through the charging control method, the charging time can be greatly shortened, the charging efficiency can be improved, and fast charging can be realized, thereby improving the operating efficiency of the agricultural drone.

It should be noted that when the constant current charging of the battery is completed, the charging parameters and/or battery parameters when the battery is charged with the constant current can be obtained, and the battery can be determined according to the charging parameters and/or battery parameters. Whether to end the constant current charging. Of course, it can also be determined according to the preset constant current charging time length. When the charging time for the constant current charging of the battery reaches the preset constant current charging time length, it is determined that the constant current charging of the battery ends.

In some embodiments, the preset constant current charging duration is related to the charging rate of the charger, thereby ensuring that the battery has enough power to perform operations during fast charging. For example, when the charging rate is 1C, the preset constant current charging time is 55 minutes; when the charging rate is 3C, the preset constant current charging time is 18 minutes; when the charging rate is 5C, the preset constant current charging time is 11 minutes.

With the rapid development of the mobile platform, the volume of the mobile platform is getting bigger and bigger, and the load is getting heavier and heavier. Therefore, the rated capacity and output power of the battery that needs the mobile platform are getting higher and higher. However, the more the rated capacity is Higher, the larger the battery, the higher the battery’s calorific value, which leads to an increase in the internal temperature of the battery. In order to prolong the service life of the battery, it is usually necessary to wait for a period of time to lower the internal temperature of the battery. Charge it, or charge it quickly.

Therefore, whether it is normal charging or fast charging using the charging control method provided in the embodiments of the present application, it is necessary to cool the battery of the mobile platform for a period of time before charging. It is not conducive to the requirement of cyclic operation.

In addition, it takes a long time for the temperature of the battery to naturally decrease from high temperature to normal temperature, usually more than 30 minutes. In order for the mobile platform to run for a long time, the traditional solution needs to use multiple batteries for rotation, and the cost is high. The experience is not good, and placing the battery on the water to lower the temperature of the battery poses a great risk. The waterproof performance of the battery may cause water leakage due to the difference in craftsmanship, resulting in damage to the battery and a bad user experience.

In order to further improve work efficiency, before using the charging control method described above to charge the battery, the battery can also be controlled to cool down, so as to realize the "stop and charge" and "stop and fast charge" of the mobile platform. If the movable platform is an unmanned aerial vehicle, it can achieve "on-the-ground charging" and "landing fast charging", thereby improving the operating efficiency of the drone.

Exemplarily, obtain the current temperature of the battery of the movable platform; determine whether the current temperature is greater than or equal to the preset working limit temperature, wherein the preset working limit temperature is greater than the preset charging limit temperature; if the current temperature is greater than or equal to the preset If the working limit temperature is set, the current temperature of the battery is lowered so that the current temperature of the battery is less than the preset charging limit temperature, so that the battery can be charged immediately when the battery meets the preset to-be-charged conditions.

Exemplarily, obtain the current temperature of the battery of the movable platform; determine whether the current temperature is greater than or equal to the preset working limit temperature, wherein the preset working limit temperature is greater than the preset charging limit temperature; if the current temperature is greater than or equal to the preset Set the working limit temperature, lower the current temperature of the battery so that the current temperature of the battery is less than the preset charging limit temperature, so that when the battery meets the preset waiting condition for charging, the battery can be charged immediately; constant current is applied to the battery Charging; after the constant current charging of the battery is completed, the battery is charged with a preset charging strategy, wherein the preset charging strategy includes the following: stop charging, stop charging after a preset period of time , Stop charging when the charging current drops to the preset cut-off current.

Specifically, a thermistor is provided inside the battery of the movable platform, and the current temperature of the battery can be obtained through the thermistor. Among them, in the process of battery supplying power to the mobile platform, the battery is continuously discharged, and the temperature of the battery gradually rises. As the temperature of the battery rises, the resistance of the thermistor gradually decreases. Through the current resistance of the thermistor and the relationship between temperature and resistance, the current temperature of the battery can be quickly determined, so that when the temperature of the battery is high, the temperature of the battery can be reduced, and the service life of the battery can be improved. When charging is needed, the battery can be charged immediately to improve work efficiency.

After obtaining the current temperature of the battery, it is determined whether the current temperature of the battery is greater than or equal to the preset operating limit temperature. Wherein, the preset working limit temperature is greater than the preset charging limit temperature, the preset working limit temperature is the temperature of the battery set to ensure the service life of the battery and can work normally, and the preset charging limit temperature is The user guarantees that the battery can be charged normally at the set battery temperature, and the preset working limit temperature and the preset charging limit temperature can be set based on actual conditions, which is not specifically limited in this application. For example, the preset working limit temperature is 80 degrees Celsius, and the preset charging limit temperature is 65 degrees Celsius.

In some embodiments, the battery includes a plurality of cells, and a heat dissipation plate is arranged between adjacent cells, and the heat dissipation plate is used to dissipate heat for the cells so that the temperature between the cells is approximately equal. . Wherein, the temperature between the cells is approximately equal, which means that the temperature difference between the cells is less than or equal to the preset temperature difference. The preset temperature difference can be set based on actual conditions, which is not specifically limited in this application. Optionally, the preset temperature difference is 1 degree Celsius. By arranging a heat dissipation plate between adjacent cells, the cells are relatively balanced, which can prevent the temperature of a single cell from being too high and causing battery damage, thereby increasing the service life of the battery.

In some embodiments, the outer surface of the plurality of cells is provided with a heat dissipation layer, and the heat dissipation layer is in contact with the outer shell of the battery to conduct the heat generated by the cells to the outside, so as to reduce the current of the battery. temperature. By providing a heat dissipation layer on the outer surface of multiple cells, and the heat dissipation layer is in contact with the outer shell of the battery, the heat generated by the cells can be conducted to the outside, and the temperature of the battery can be reduced, so as to slow down the temperature rise of the battery and improve the battery. Service life.

In some embodiments, the battery includes a tab plate, a tab, and at least one battery cell, the battery core is connected to the tab plate through the tab; the gap between the battery core and the tab is filled with heat conduction Materials to dissipate heat from the battery core and/or the tabs. Among them, the thermal conductive material includes, but is not limited to, thermally conductive silica gel, thermally conductive mica sheet, thermally conductive silicon film, thermally conductive filler and thermally conductive silicone grease. By filling the gap between the battery cell and the tab with a thermally conductive material, the battery core and/or the tab can be dissipated, which can slow down the temperature rise of the battery and increase the service life of the battery.

In some embodiments, the battery includes a plurality of cells, the plurality of cells form a first cell group and a second cell group, and the first cell group and the second cell group are symmetrical When placed, the number of cells in the first battery cell group is the same as that of the second battery cell group.

In some embodiments, the movable platform includes a spray device, the spray device includes a box, a spray pipe, and a spray head, the spray pipe is used to transport the liquid in the box to the spray head, For spraying liquid, the spraying pipe is in contact with the outer shell of the battery, so that the liquid conveyed in the spraying pipe can lower the current temperature of the battery. By setting the position of the spraying pipe and the battery, the spraying pipe is in contact with the battery shell, so that the liquid conveyed in the spraying pipe can reduce the temperature of the battery, which can slow down the temperature rise of the battery, so that the battery can be charged immediately when the battery needs to be charged. Recharge to improve user experience.

In some embodiments, the movable platform includes a rotary-wing drone, and the rotor of the rotary-wing drone rotates to form a wind field, and the flow direction of the wind field passes through the casing of the battery to reduce the current of the battery. temperature. The flow direction of the wind field is formed by setting the position of the battery and/or the rotor, so that the flow direction of the wind field passes through the casing of the battery to blow the casing of the battery, thereby taking away the heat generated by the battery to reduce the temperature of the battery, which can slow down the battery The temperature rises, it is convenient to charge the battery immediately when the battery needs to be charged, which improves the user experience.

If the current temperature of the battery is greater than or equal to the preset working limit temperature, the current temperature of the battery is lowered so that the current temperature of the battery can be less than the preset charging limit temperature, so that when the battery meets the preset waiting conditions, the battery can be charged immediately Charge. Wherein, the preset to-be-charged condition includes at least one of the following: the battery stops supplying power to the movable platform, the movable platform completes work tasks, and the remaining power of the battery is less than a preset power threshold.

The charging control method provided in the above embodiments can be specifically applied to unmanned aerial vehicles, such as agricultural plant protection machines. Since agricultural plant protection machines need to perform cyclic operations, the charging control method can be used to achieve "on-the-ground charging" or "landing". "Quick charge" does not require more batteries to improve the cycle efficiency of agricultural plant protection machines, reduce costs, and at the same time ensure the safety of drone operations and increase the service life of the batteries.

The embodiment of the present invention also provides a charging control method, which can be applied to a charger, the charger is used to charge a battery, and the method includes: charging the battery in a first preset charging mode; After the battery is charged in the first preset charging mode, a preset charging strategy is used to charge the battery; wherein, the preset charging strategy includes one of the following: stop charging, stop charging after charging for a preset period of time, Stop charging when the charging current drops to the preset cut-off current. The first preset charging mode may include at least one of the following: constant current charging, trickle charging first and then constant current charging, and step-by-step voltage/current charging.

Wherein, the step-by-step increase in voltage charging may be: the output voltage is dynamically adjusted from the first voltage to the second voltage, and the adjustment step is from the first voltage step value to the second voltage step value.

Wherein, the step-by-step increase current charging may be: the output current is dynamically adjusted from the first current to the second current, and the adjustment step is from the first current step value to the second current step value.

Further, in the case of no conflict, any charging control method disclosed in the above embodiments can be applied to this embodiment.

Please refer to FIG. 13, which is a schematic block diagram of a charger provided by an embodiment of the present application. The charger includes a processor 11, a memory 12, and a charging circuit 13. The charging circuit 13 is connected to the processor 11 and is also connected to an external power source and a battery for charging the battery.

Specifically, the processor 11 may be a micro-controller unit (MCU), a central processing unit (Central Processing Unit, CPU), a digital signal processor (Digital Signal Processor, DSP), or the like.

Specifically, the memory 12 may be a Flash chip, a read-only memory (ROM, Read-Only Memory) disk, an optical disk, a U disk, or a mobile hard disk.

Wherein, the processor is configured to run a computer program stored in a memory, and when executing the computer program, implement any of the charging control methods provided in the embodiments of the present application.

Exemplarily, the processor is configured to run a computer program stored in a memory, and implement the following steps when the computer program is executed:

Perform constant current charging on the battery; obtain the charging parameters and/or battery parameters when the battery is charged with the constant current, and determine whether the battery enters constant voltage charging according to the charging parameters and/or battery parameters Stage; if the battery enters the constant voltage charging stage, use the preset charging strategy corresponding to the constant voltage charging stage to charge the battery;

In some embodiments, the processor is also used to implement:

Determine whether there is battery access; if it is determined that there is battery access, perform the step of performing constant current charging on the battery; or,

Before performing constant current charging on the battery, trickle charging is also performed on the battery.

In some embodiments, the processor is also used to implement:

It is determined whether the charger uses the fast charge mode, and the constant voltage charging stage of the fast charge mode uses a preset charging strategy to charge the battery; if the charger uses the fast charge mode, the The step of constant current charging of the battery.

In some embodiments, the fast charging mode includes a constant current charging phase; or, the fast charging mode includes a constant current charging phase and a constant voltage charging phase.

In some embodiments, the processor implementing the determining whether the charger uses the fast charge mode to charge the battery includes:

Determine whether the user selects the fast charge mode; if the user selects the fast charge mode, control the charger to use the fast charge mode to charge the battery.

In some embodiments, the processor further implements:

If the user does not select the fast charge mode, control the charger to use the slow charge mode to charge the battery;

In some embodiments, the slow charging mode includes a trickle charging phase, a constant current charging phase, and a constant voltage charging phase.

In some embodiments, the processor further implements:

The fast charging mode is set as the default charging mode of the charger.

In some embodiments, the processor implements the acquisition of the charging parameters and/or battery parameters when the battery is charged with the constant current, and determines whether the battery is Enter the constant voltage charging stage, including:

Obtain the current battery voltage of the battery; determine whether the battery enters the constant voltage charging stage according to the current battery voltage.

In some embodiments, implementing the processor to determine whether the battery enters a constant voltage charging phase according to the current battery voltage includes:

Obtain a preset charging cut-off voltage, the preset charging cut-off voltage is used to indicate that the battery enters a constant voltage charging stage from a constant current charging stage; determining the battery according to the current battery voltage and the preset charging cut-off voltage Whether to enter the constant voltage charging stage.

In some embodiments, implementing the processor to determine whether the battery enters a constant voltage charging phase according to the current battery voltage and the preset charging cut-off voltage includes:

If the difference between the current battery voltage and the preset charging cut-off voltage is less than a preset voltage threshold, it is determined that the battery enters a constant voltage charging stage.

If the current battery voltage is greater than or equal to the preset charging cut-off voltage, it is determined that the battery enters the constant voltage charging stage.

Obtain the current charging current of the battery; determine whether the battery enters the constant voltage charging stage according to the current charging current and voltage.

In some embodiments, implementing the processor to determine whether the battery enters a constant voltage charging phase according to the current charging current and voltage includes:

Obtain a preset charging cut-off current, the preset charging cut-off current is used to indicate that the battery enters a constant voltage charging stage from a constant current charging stage; determining the battery according to the current charging current and the preset charging cut-off current Whether to enter the constant voltage charging stage.

In some embodiments, implementing the processor to determine whether the battery enters a constant voltage charging phase according to the current charging current and the preset charging cut-off current includes:

If the difference between the preset charging cut-off current and the current charging current is less than a preset current threshold, it is determined that the battery enters a constant voltage charging stage.

If the current charging current is less than the preset charging cut-off current, it is determined that the battery enters the constant voltage charging stage.

Monitoring the charging current of the battery; determining the changing trend of the charging current of the battery; if the changing trend changes from a steady trend to a downward trend, it is determined that the battery enters a constant voltage charging stage.

In some embodiments, the size of the preset duration has a negative correlation with the charging rate of the charger.

In some embodiments, the preset cut-off current has a positive correlation with the charging rate of the charger.

In some embodiments, the processor further implements: if the battery enters the constant voltage charging phase, prompting the battery to enter the constant voltage charging phase.

In some embodiments, the processor further implements:

Record the charging information of the battery; wherein the charging information includes at least one of the following: constant current charging time, charging current corresponding to the constant current charging time, constant voltage charging time, and charging corresponding to the constant voltage charging time Current.

In some embodiments, the processor further implements:

Send charging instruction information to the battery, where the charging instruction information includes a remaining power threshold; so that the battery saves the charging instruction information after receiving the charging instruction information, and the remaining power when the battery is powered reaches the remaining power Stop discharging at the stated remaining power threshold.

In some embodiments, the processor further implements:

Acquiring the remaining power of the battery; if the remaining power of the battery is greater than or equal to the remaining power threshold, determining that the charger uses a fast charging mode.

Charge the battery in the charger, and the battery includes reserved capacity. Exemplarily, the processor is configured to run a computer program stored in a memory, and implement the following steps when the computer program is executed:

Determine whether the battery includes the reserved capacity; if the battery includes the reserved capacity, charge the battery with a constant current;

Determine whether the battery includes reserved capacity;

After the constant current charging of the battery is completed, the battery is charged by using a preset charging strategy;

In some embodiments, the processor further implements:

Determine whether there is battery access; if it is determined that there is battery access, perform the step of determining whether the battery includes the reserved capacity; or,

Before performing constant current charging on the battery, trickle charge the battery.

In some embodiments, the processor further implements:

If the user does not select the fast charge mode, control the charger to use the slow charge mode to charge the battery; wherein, the slow charge mode includes at least a constant current charging stage and a constant voltage charging stage, and in the constant voltage charging stage Do not use the preset charging strategy to charge the battery.

In some embodiments, the processor implements:

The fast charging mode is set as the default charging mode of the charger.

In some embodiments, the processor implements: acquiring charging parameters and/or battery parameters when the battery is charged with the constant current, and determining whether to end the constant current charging according to the charging parameters and/or battery parameters. Current charging

If the constant current charging of the battery is finished, the preset charging strategy is used to charge the battery.

If the current charging current is less than the preset charging cut-off current, it is determined that the battery enters a constant voltage charging stage.

In some embodiments, the processor further implements: if the battery enters the constant voltage charging stage, prompting the battery to enter the constant voltage charging stage

In some embodiments, the processor further implements:

Charge the battery with a constant current; obtain the charging parameters and/or battery parameters when the battery is charged with the constant current, and determine whether the battery ends the constant current according to the charging parameters and/or battery parameters Current charging; if the battery ends the constant current charging, use a preset charging strategy to charge the battery;

In some embodiments, the processor further implements:

Determine whether there is battery access; if it is determined that there is battery access, perform the step of performing constant current charging on the battery;

In some embodiments, the processor further implements:

Determine whether the charger uses the fast charge mode, the fast charge mode uses a preset charging strategy to charge the battery at the end of constant current charging; if the charger uses the fast charge mode, execute the check The steps for constant current charging of the battery are described.

In some embodiments, the processor further implements:

If the user does not select the fast charge mode, control the charger to use the slow charge mode to charge the battery; wherein, the slow charge mode includes at least a constant current charging phase, and the constant current charging phase is not used when the constant current charging phase ends. The preset charging strategy charges the battery.

In some embodiments, the processor further implements:

The fast charging mode is set as the default charging mode of the charger.

In some embodiments, the processor further implements the acquisition of charging parameters and/or battery parameters when the battery is charged with the constant current, and determines the battery according to the charging parameters and/or battery parameters Whether to end the constant current charging includes:

Obtain the current battery voltage of the battery; Obtain a preset charging cut-off voltage, the preset charging cut-off voltage is used to indicate that the battery enters the constant voltage charging stage from the constant current charging stage; if the current battery voltage is greater than or equal to The preset charging cut-off voltage determines that the battery ends the constant current charging.

Obtain the current charging current of the battery; Obtain the preset charging cut-off current, the preset charging cut-off current is used to indicate that the battery enters the constant voltage charging stage from the constant current charging stage; Assuming the charging cut-off current, it is determined that the battery ends the constant current charging.

Monitoring the charging current of the battery; determining the changing trend of the charging current of the battery; if the changing trend changes from a steady trend to a downward trend, it is determined that the battery ends the constant current charging.

In some embodiments, the predetermined cut-off current has a positive correlation with the charging rate of the charger.

In some embodiments, the processor further implements: if the battery ends the constant current charging, prompting the battery to end the constant current charging phase.

In some embodiments, the processor further implements:

Send charging instruction information to the battery, where the charging instruction information includes a remaining power threshold; so that the battery saves the charging instruction information after receiving the charging instruction information, and the remaining power when the battery is powered reaches the required value. Stop discharging at the stated remaining power threshold.

In some embodiments, the processor further implements:

Acquire the remaining power of the battery; if the remaining power of the battery is greater than or equal to the remaining power threshold, determine that the charger uses a fast charging mode.

Performing constant current charging on the battery; after the constant current charging of the battery ends, charging the battery by using a preset charging strategy;

The embodiments of the present application also provide a computer-readable storage medium, the computer-readable storage medium stores a computer program, the computer program includes program instructions, and the processor executes the program instructions to implement the foregoing implementation The steps of the charging control method provided in the example.

The computer-readable storage medium may be the internal storage unit of the charger described in any of the foregoing embodiments, for example, the memory or memory of the charger. The computer-readable storage medium may also be an external storage device of the charger, such as a plug-in hard disk equipped on the charger, a smart memory card (SMC), or a secure digital (SD) ) Card, Flash Card, etc.

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Anyone familiar with the technical field can easily think of various equivalents within the technical scope disclosed in this application. Modifications or replacements, these modifications or replacements shall be covered within the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

A charging control method, characterized in that it is applied to a charger, the charger is used to charge a battery, and the method includes:

Performing constant current charging on the battery;

Acquiring the charging parameters and/or battery parameters when the battery is charged with the constant current, and determining whether the battery enters the constant voltage charging stage according to the charging parameters and/or the battery parameters;

If the battery enters the constant voltage charging phase, charge the battery by using a preset charging strategy corresponding to the constant voltage charging phase;

The preset charging strategy includes one of the following: stopping charging, stopping charging after a preset period of time, and stopping charging when the charging current drops to a preset cut-off current.
The method according to claim 1, wherein before the constant current charging of the battery, the method further comprises:

Determine whether there is battery access; if it is determined that there is battery access, charge the battery with constant current; or,

Before performing constant current charging on the battery, the method further includes: trickle charging the battery.
The method according to claim 1, wherein the method further comprises:

Determining whether the charger uses a fast charging mode, and using a preset charging strategy to charge the battery in a constant voltage charging phase of the fast charging mode;

If the charger uses the fast charge mode, perform the step of performing constant current charging on the battery.
The method according to claim 3, wherein the fast charging mode includes a constant current charging phase; or, the fast charging mode includes a constant current charging phase and a constant voltage charging phase.
The method according to claim 3, wherein the determining whether the charger uses a fast charge mode to charge the battery comprises:

Determine whether the user chooses the fast charge mode;

If the user selects the fast charge mode, control the charger to use the fast charge mode to charge the battery.
The method according to claim 5, wherein the method further comprises:

If the user does not select the fast charge mode, control the charger to use the slow charge mode to charge the battery;

Wherein, the slow charging mode includes at least a constant current charging phase and a constant voltage charging phase, and the preset charging strategy is not used to charge the battery in the constant voltage charging phase.
The method according to claim 6, wherein the slow charging mode includes a trickle charging phase, a constant current charging phase, and a constant voltage charging phase.
The method according to claim 3, wherein the method further comprises:

The fast charging mode is set as the default charging mode of the charger.
The method according to any one of claims 1 to 8, wherein the acquiring the charging parameter and/or the battery parameter when the battery is charged with the constant current, and according to the charging parameter and/or The battery parameters determine whether the battery enters the constant voltage charging stage, including:

Obtaining the current battery voltage of the battery;

It is determined whether the battery enters a constant voltage charging stage according to the current battery voltage.
The method according to claim 9, wherein the determining whether the battery enters a constant voltage charging stage according to the current battery voltage comprises:

Acquiring a preset charging cut-off voltage, where the preset charging cut-off voltage is used to indicate that the battery has entered a constant voltage charging stage from a constant current charging stage;

According to the current battery voltage and the preset charging cut-off voltage, it is determined whether the battery enters a constant voltage charging stage.
The method according to claim 10, wherein the determining whether the battery enters a constant voltage charging stage according to the current battery voltage and the preset charging cut-off voltage comprises:

If the difference between the current battery voltage and the preset charging cut-off voltage is less than a preset voltage threshold, it is determined that the battery enters a constant voltage charging stage.
The method according to claim 10, wherein the determining whether the battery enters a constant voltage charging stage according to the current battery voltage and the preset charging cut-off voltage comprises:

If the current battery voltage is greater than or equal to the preset charging cut-off voltage, it is determined that the battery enters the constant voltage charging stage.
The method according to any one of claims 1 to 8, wherein the acquiring the charging parameter and/or the battery parameter when the battery is charged with the constant current, and according to the charging parameter and/or The battery parameters determine whether the battery enters the constant voltage charging stage, including:

Obtaining the current charging current of the battery;

It is determined whether the battery enters a constant voltage charging stage according to the current charging current and voltage.
The method according to claim 13, wherein the determining whether the battery enters a constant voltage charging stage according to the current charging current and voltage comprises:

Acquiring a preset charging cut-off current, where the preset charging cut-off current is used to indicate that the battery has entered a constant voltage charging stage from a constant current charging stage;

According to the current charging current and the preset charging cut-off current, it is determined whether the battery enters a constant voltage charging stage.
The method according to claim 14, wherein the determining whether the battery enters a constant voltage charging stage according to the current charging current and the preset charging cut-off current comprises:

If the difference between the preset charging cut-off current and the current charging current is less than a preset current threshold, it is determined that the battery enters a constant voltage charging stage.
The method according to claim 14, wherein the determining whether the battery enters a constant voltage charging stage according to the current charging current and the preset charging cut-off current comprises:

If the current charging current is less than the preset charging cut-off current, it is determined that the battery enters a constant voltage charging stage.
The method according to any one of claims 1 to 8, wherein the acquiring the charging parameter and/or the battery parameter when the battery is charged with the constant current, and according to the charging parameter and/or The battery parameters determine whether the battery enters the constant voltage charging stage, including:

Obtaining the charging current of the battery;

Determining the changing trend of the charging current of the battery according to the charging current of the battery;

If the change trend changes from a steady trend to a downward trend, it is determined that the battery enters the constant voltage charging stage.
The method of claim 1, wherein:

The size of the preset duration has a negative correlation with the charging rate of the charger; and/or,

The preset cut-off current has a positive correlation with the charging rate of the charger.
The method according to claim 1, wherein if the battery enters the constant voltage charging stage, a prompt is made to indicate that the battery enters the constant voltage charging stage.
The method according to claim 1, wherein the method further comprises:

Record the charging information of the battery;

Wherein, the charging information includes at least one of the following: a constant current charging time, a charging current corresponding to the constant current charging time, a constant voltage charging time, and a charging current corresponding to the constant voltage charging time.
The method according to claim 1, wherein the method further comprises:

Sending charging instruction information to the battery, where the charging instruction information includes a remaining power threshold;

This allows the battery to save the charging instruction information after receiving the charging instruction information, and stop discharging when the remaining power when the battery is powered reaches the remaining power threshold.
The method according to claim 21, wherein the method further comprises:

Obtaining the remaining power of the battery;

If the remaining power of the battery is greater than or equal to the remaining power threshold, it is determined that the charger uses a fast charging mode.
A charging control method, characterized in that it is applied to a charger, and the charger is used to charge a battery; the method includes:

Determine whether the battery includes reserved capacity;

If the battery includes the reserved capacity, charge the battery with a constant current;

After the constant current charging of the battery is completed, the battery is charged by using a preset charging strategy;

The preset charging strategy includes one of the following: stopping charging, stopping charging after a preset period of time, and stopping charging when the charging current drops to a preset cut-off current.
The method according to claim 23, wherein before the constant current charging of the battery, the method further comprises:

Determine whether there is battery access; if it is determined that there is battery access, determine whether the battery includes reserved capacity; or,

Before performing constant current charging on the battery, the method further includes: trickle charging the battery.
The method according to claim 23, wherein the method further comprises:

Determining whether the charger uses a fast charging mode, and using a preset charging strategy to charge the battery in a constant voltage charging phase of the fast charging mode;

If the charger uses the fast charge mode, perform the step of performing constant current charging on the battery.
The method according to claim 25, wherein the fast charging mode includes a constant current charging phase; or, the fast charging mode includes a constant current charging phase and a constant voltage charging phase.
The method of claim 25, wherein the determining whether the charger uses a fast charge mode to charge the battery comprises:

Determine whether the user chooses the fast charge mode;

If the user selects the fast charge mode, control the charger to use the fast charge mode to charge the battery.
The method according to claim 27, wherein the method further comprises:

If the user does not select the fast charge mode, control the charger to use the slow charge mode to charge the battery;

Wherein, the slow charging mode includes at least a constant current charging phase and a constant voltage charging phase, and the preset charging strategy is not used to charge the battery in the constant voltage charging phase.
The method according to claim 28, wherein the slow charging mode includes a trickle charging phase, a constant current charging phase, and a constant voltage charging phase.
The method according to claim 25, wherein the method further comprises:

The fast charging mode is set as the default charging mode of the charger.
The method according to any one of claims 23 to 30, characterized in that said acquiring charging parameters and/or battery parameters when the battery is charged with the constant current, and according to the charging parameters and/or The battery parameters determine whether the battery enters the constant voltage charging stage, including:

Obtaining the current battery voltage of the battery;

It is determined whether the battery enters a constant voltage charging stage according to the current battery voltage.
The method of claim 31, wherein the determining whether the battery enters a constant voltage charging stage according to the current battery voltage comprises:

Acquiring a preset charging cut-off voltage, where the preset charging cut-off voltage is used to indicate that the battery has entered a constant voltage charging stage from a constant current charging stage;

According to the current battery voltage and the preset charging cut-off voltage, it is determined whether the battery enters a constant voltage charging stage.
The method according to claim 32, wherein the determining whether the battery enters a constant voltage charging stage according to the current battery voltage and the preset charging cut-off voltage comprises:

If the difference between the current battery voltage and the preset charging cut-off voltage is less than a preset voltage threshold, it is determined that the battery enters a constant voltage charging stage.
The method according to claim 32, wherein the determining whether the battery enters a constant voltage charging stage according to the current battery voltage and the preset charging cut-off voltage comprises:

If the current battery voltage is greater than or equal to the preset charging cut-off voltage, it is determined that the battery enters the constant voltage charging stage.
The method according to any one of claims 23 to 30, characterized in that said acquiring charging parameters and/or battery parameters when the battery is charged with the constant current, and according to the charging parameters and/or The battery parameters determine whether the battery enters the constant voltage charging stage, including:

Obtaining the current charging current of the battery;

It is determined whether the battery enters a constant voltage charging stage according to the current charging current and voltage.
The method of claim 35, wherein the determining whether the battery enters a constant voltage charging stage according to the current charging current and voltage comprises:

Acquiring a preset charging cut-off current, where the preset charging cut-off current is used to indicate that the battery has entered a constant voltage charging stage from a constant current charging stage;

According to the current charging current and the preset charging cut-off current, it is determined whether the battery enters a constant voltage charging stage.
The method according to claim 36, wherein the determining whether the battery enters a constant voltage charging stage according to the current charging current and the preset charging cut-off current comprises:

If the difference between the preset charging cut-off current and the current charging current is less than the preset current threshold, it is determined that the battery enters the constant voltage charging stage; or,

If the current charging current is less than the preset charging cut-off current, it is determined that the battery enters a constant voltage charging stage.
The method according to any one of claims 23 to 30, characterized by comprising:

Acquiring charging parameters and/or battery parameters when performing the constant current charging on the battery, and determining whether to end the constant current charging according to the charging parameters and/or battery parameters;

If the constant current charging of the battery is finished, the preset charging strategy is used to charge the battery.
The method according to claim 38, wherein the acquiring the charging parameters and/or the battery parameters when the battery is charged with the constant current, and determining whether to end according to the charging parameters and/or the battery parameters The constant current charging includes:

Obtaining the charging current of the battery;

Determining the changing trend of the charging current of the battery according to the charging current of the battery;

If the change trend changes from a steady trend to a downward trend, it is determined to end the constant current charging of the battery.
The method according to claim 23, wherein the size of the preset duration is in a negative correlation with the charging rate of the charger; and/or the preset cut-off current is related to the charging rate of the charger The rate is positively correlated.
The method according to claim 23, wherein the method further comprises: if the battery enters the constant voltage charging phase, prompting the battery to enter the constant voltage charging phase.
The method according to claim 23, wherein the method further comprises:

Record the charging information of the battery;

Wherein, the charging information includes at least one of the following: a constant current charging time, a charging current corresponding to the constant current charging time, a constant voltage charging time, and a charging current corresponding to the constant voltage charging time.
The method according to claim 23, wherein the method further comprises:

Sending charging instruction information to the battery, where the charging instruction information includes a remaining power threshold;

This allows the battery to save the charging instruction information after receiving the charging instruction information, and stop discharging when the remaining power when the battery is powered reaches the remaining power threshold.
The method of claim 43, wherein the method further comprises:

Obtaining the remaining power of the battery;

If the remaining power of the battery is greater than or equal to the remaining power threshold, it is determined that the charger uses a fast charging mode.
A charging control method, characterized in that it is applied to a charger, the charger is used to charge a battery, and the method includes:

Performing constant current charging on the battery;

Acquiring charging parameters and/or battery parameters when performing the constant current charging on the battery, and determining whether the battery ends the constant current charging according to the charging parameters and/or battery parameters;

If the battery ends the constant current charging, charge the battery using a preset charging strategy;

The preset charging strategy includes one of the following: stopping charging, stopping charging after a preset period of time, and stopping charging when the charging current drops to a preset cut-off current.
The method according to claim 45, wherein before the constant current charging of the battery, the method further comprises:

Determine whether there is battery access; if it is determined that there is battery access, charge the battery with constant current; or,

Before performing constant current charging on the battery, the method further includes: trickle charging the battery.
The method according to claim 45, wherein the method further comprises:

Determining whether the charger uses a fast charging mode, where the fast charging mode uses a preset charging strategy to charge the battery when the constant current charging ends;

If the charger uses the fast charge mode, perform the step of performing constant current charging on the battery.
The method according to claim 47, wherein the fast charging mode includes a constant current charging phase; or, the fast charging mode includes a constant current charging phase and a constant voltage charging phase.
The method of claim 47, wherein the determining whether the charger uses a fast charge mode to charge the battery comprises:

Determine whether the user chooses the fast charge mode;

If the user selects the fast charge mode, control the charger to use the fast charge mode to charge the battery.
The method of claim 49, wherein the method further comprises:

If the user does not select the fast charge mode, control the charger to use the slow charge mode to charge the battery;

Wherein, the slow charging mode includes at least a constant current charging phase, and the preset charging strategy is not used to charge the battery at the end of the constant current charging phase.
The method of claim 50, wherein the slow charging mode includes a trickle charging phase, a constant current charging phase, and a constant voltage charging phase.
The method according to claim 47, wherein the method further comprises:

The fast charging mode is set as the default charging mode of the charger.
The method according to any one of claims 45 to 52, wherein the acquiring the charging parameters and/or the battery parameters when the battery is charged with the constant current, and according to the charging parameters and/or The battery parameters determine whether the battery ends the constant current charging, including:

Obtaining the current battery voltage of the battery;

Acquiring a preset charging cut-off voltage, where the preset charging cut-off voltage is used to indicate that the battery has entered a constant voltage charging stage from a constant current charging stage;

If the current battery voltage is greater than or equal to the preset charging cut-off voltage, it is determined that the battery ends the constant current charging.
The method according to any one of claims 45 to 52, wherein the acquiring the charging parameters and/or the battery parameters when the battery is charged with the constant current, and according to the charging parameters and/or The battery parameters determine whether the battery ends the constant current charging, including:

Obtaining the current charging current of the battery;

Acquiring a preset charging cut-off current, where the preset charging cut-off current is used to indicate that the battery has entered a constant voltage charging stage from a constant current charging stage;

If the current charging current is less than the preset charging cut-off current, it is determined that the battery ends the constant current charging.
The method according to any one of claims 45 to 52, wherein the acquiring the charging parameters and/or the battery parameters when the battery is charged with the constant current, and according to the charging parameters and/or The battery parameters determine whether the battery ends the constant current charging, including:

Obtaining the charging current of the battery;

Determining the changing trend of the charging current of the battery according to the charging current of the battery;

If the change trend changes from a steady trend to a downward trend, it is determined that the battery ends the constant current charging.
The method according to claim 45, wherein the size of the preset duration has a negative correlation with the charging rate of the charger; and/or the preset cut-off current is related to the charging rate of the charger The rate is positively correlated.
The method of claim 45, wherein if the battery ends the constant current charging, a prompt is given to the battery to end the constant current charging.
The method according to claim 45, wherein the method further comprises:

Record the charging information of the battery;

Wherein, the charging information includes at least one of the following: a constant current charging time, a charging current corresponding to the constant current charging time, a constant voltage charging time, and a charging current corresponding to the constant voltage charging time.
The method according to claim 45, wherein the method further comprises:

Sending charging instruction information to the battery, where the charging instruction information includes a remaining power threshold;

This allows the battery to save the charging instruction information after receiving the charging instruction information, and stop discharging when the remaining power when the battery is powered reaches the remaining power threshold.
The method of claim 59, wherein the method further comprises:

Obtaining the remaining power of the battery;

If the remaining power of the battery is greater than or equal to the remaining power threshold, it is determined that the charger uses a fast charging mode.
A charging control method, characterized in that it is applied to a charger, the charger is used to charge a battery, and the method includes:

Charging the battery in a first preset charging mode;

After the battery is charged in the first preset charging mode, charging the battery using a preset charging strategy;

The preset charging strategy includes one of the following: stopping charging, stopping charging after a preset period of time, and stopping charging when the charging current drops to a preset cut-off current.
A charger, characterized in that the charger includes a processor, a memory, and a charging circuit;

The charging circuit is connected to the processor and is used to charge the battery;

The memory is used to store a computer program;

The processor is configured to execute the computer program and, when executing the computer program, implement the steps of the charging control method according to any one of claims 1 to 22.
A charger, characterized in that the charger includes a processor, a memory, and a charging circuit;

The charging circuit is connected to the processor and is used to charge the battery;

The memory is used to store a computer program;

The processor is configured to execute the computer program and, when executing the computer program, implement the steps of the charging control method according to any one of claims 23 to 44.
A charger, characterized in that the charger includes a processor, a memory, and a charging circuit;

The charging circuit is connected to the processor and is used to charge the battery;

The memory is used to store a computer program;

The processor is configured to execute the computer program and, when executing the computer program, implement the steps of the charging control method according to any one of claims 45 to 60.
A charger, characterized in that the charger includes a processor, a memory, and a charging circuit;

The charging circuit is connected to the processor and is used to charge the battery;

The memory is used to store a computer program;

The processor is configured to execute the computer program and, when executing the computer program, implement the steps of the charging control method according to claim 61.
A charging system, characterized in that the charging system comprises the charger and the battery according to any one of claims 63-65, and the charger is used to charge the battery.
A computer-readable storage medium, characterized in that, the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the processor realizes as described in any one of claims 1 to 22. The steps of the charging control method, or the steps of implementing the charging control method according to any one of claims 23 to 44, or the steps of implementing the charging control method according to any one of claims 45 to 60, Or implement the steps of the charging control method according to claim 61.