CN112823461A

CN112823461A - Charging control method, charger, charging system and storage medium

Info

Publication number: CN112823461A
Application number: CN202080005242.3A
Authority: CN
Inventors: 张彩辉
Original assignee: SZ DJI Technology Co Ltd
Current assignee: SZ DJI Technology Co Ltd
Priority date: 2020-01-13
Filing date: 2020-01-13
Publication date: 2021-05-18
Also published as: WO2021142595A1

Abstract

A method of charge control, the method comprising: constant current charging (S101) the battery; acquiring charging parameters and/or battery parameters when the battery is subjected to the constant current charging, and determining whether the battery finishes the constant current charging according to the charging parameters and/or the battery parameters (S102); and if the battery finishes the constant current charging, charging the battery by adopting a preset charging strategy (S103).

Description

Charging control method, charger, charging system and storage medium

Technical Field

The present disclosure relates to the field of battery technologies, and in particular, to a charging control method, a charger, a charging system, and a storage medium.

Background

The battery is used for supplying power to electronic equipment, such as a lithium battery used for supplying power to the agricultural unmanned aerial vehicle, when the battery is not charged, the battery needs to be charged so that the agricultural unmanned aerial vehicle can continue to complete the operation, however, the existing battery charging process generally comprises a trickle charging stage, a constant-current charging stage and a constant-voltage charging stage, and the charging time is long. Because agricultural unmanned aerial vehicle needs quick circulation operation when the operation, consequently current charging mode can't satisfy the circulation operation requirement that requires agricultural unmanned aerial vehicle.

Disclosure of Invention

Based on the above, the application provides a charging control method, a charger, a charging system and a storage medium, so as to improve the charging efficiency of the battery and realize quick charging.

In a first aspect, the present application provides a charging control method, applying a charger, the method including:

carrying out constant current charging on the battery;

acquiring charging parameters and/or battery parameters when the battery is subjected to constant-current charging, and determining whether the battery enters a constant-voltage charging stage according to the charging parameters and/or the battery parameters;

if the battery enters a constant voltage charging stage, charging the battery by adopting a preset charging strategy corresponding to the constant voltage charging stage;

wherein the preset charging strategy comprises one of: stopping charging, stopping charging after a preset charging time, and stopping charging when the charging current is reduced to a preset cut-off current.

In addition, the application also provides another charging control method, which is applied to a charger, wherein the charger is used for charging the battery; the method comprises the following steps:

determining whether the battery includes a reserved capacity;

if the battery comprises the reserved capacity, performing constant current charging on the battery;

after the constant-current charging of the battery is finished, charging the battery by adopting a preset charging strategy corresponding to the constant-voltage charging stage;

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

carrying out constant current charging on the battery;

acquiring charging parameters and/or battery parameters when the battery is subjected to constant current charging, and determining whether the battery finishes the constant current charging according to the charging parameters and/or the battery parameters;

if the battery finishes the constant current charging, a preset charging strategy is adopted to charge the battery;

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

charging the battery in a first preset charging mode;

after the battery is charged in a first preset charging mode, charging the battery by adopting a preset charging strategy;

In a second aspect, the present application further provides a charger, wherein the charger includes a processor, a memory, and a charging circuit;

the charging circuit is connected with the processor and is used for charging the battery;

the memory is used for storing 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 as described above.

In a third aspect, the present application further provides a charging system, which includes any one of the above chargers and a battery, wherein the charger is configured to charge the battery.

In a fourth aspect, the present application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, causes the processor to implement the charging control method described above.

The charging control method, the charger, the charging system and the storage medium can directly carry out constant current charging on the battery; acquiring charging parameters and/or battery parameters when the battery is subjected to constant-current charging, and determining whether the battery enters a constant-voltage charging stage according to the charging parameters and/or the battery parameters; when the battery enters a constant voltage charging stage, charging the battery by adopting a preset charging strategy corresponding to the constant voltage charging stage; wherein the preset charging strategy comprises one of: stopping charging, stopping charging after a preset charging time, and stopping charging when the charging current is reduced to a preset cut-off current. For example, a constant current charging process is performed on a battery, and when it is determined that a constant voltage charging stage is to be entered, the charging of the battery is stopped, thereby completing the charging of the battery. And then realized the quick charge of battery, can also improve the life of battery simultaneously.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

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 in an embodiment of the present application;

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

fig. 4 is a flowchart illustrating steps of a charging control method according to an embodiment of the present application;

FIG. 5 is a flow chart illustrating steps of another charge control method provided by an embodiment of the present application;

fig. 6 is a schematic view of another application scenario of a charging control method provided in an embodiment of the present application;

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

fig. 8 is a schematic view of another application scenario of a charging control method provided in an embodiment of the present application;

fig. 9 is a flowchart illustrating steps of another charging control method provided in an embodiment of the present application;

fig. 10 is a graph of a charging voltage when a short circuit occurs in a battery provided by an embodiment of the present application;

fig. 11 is a graph of a charging voltage when a short circuit does not occur in a battery provided by an embodiment of the present application;

fig. 12 is a flowchart illustrating steps of another charging control method provided in an embodiment of the present application;

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

Detailed Description

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

The flow diagrams depicted in the figures are merely illustrative and do not necessarily include all of the elements and operations/steps, nor do they necessarily have to be performed in the order depicted. For example, some operations/steps may be decomposed, combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.

The embodiment of the application provides a charging control method, a charger, a charging system and a storage medium. The method can charge the battery in a first preset charging mode; after the battery is charged in a first preset charging mode, charging the battery by adopting a preset charging strategy; wherein the preset charging strategy comprises one of: stopping charging, stopping charging after a preset charging time, and stopping charging when the charging current is reduced to a preset cut-off current.

Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Referring to fig. 1, fig. 1 is a schematic block diagram of a charging system according to an embodiment of the present disclosure. 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 a battery 20, the battery 20 being used to power electronic devices, such as a movable platform and loads carried on the movable platform.

In an embodiment of the present application, the charger 10 includes a Micro Controller Unit (MCU) for executing the charging control method provided in the present application to improve the charging efficiency and the service life of the battery.

The micro control unit of the charger 10 is configured to obtain a charging parameter and/or a battery parameter of the battery. Wherein, the charging parameters comprise charging time, charging current and/or charging voltage, etc.; the battery parameters include battery voltage, battery current, and/or battery capacity, among others.

Wherein the micro control unit of the charger 10 is configured to obtain pre-stored charging parameters. For example, a charging cut-off voltage is preset, and the preset charging cut-off voltage is used for representing that the battery enters a constant-voltage charging stage from a constant-current charging stage; for another example, the preset charging cut-off current is used for representing that the battery enters a constant voltage charging stage from a constant current charging stage.

In some embodiments, the preset charge cutoff voltage may be a constant voltage charge voltage; the preset charge cutoff current may be a constant current charge current.

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

The micro control unit is used for acquiring and processing battery parameters of the battery, wherein the battery parameters comprise charging current, charging voltage, charging time, discharging current, discharging time, constant voltage charging capacity, charging and discharging capacity ratio and the like. And sends these battery parameters to the micro-control unit of the charger 10.

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

In the process of charging and discharging the battery, the battery management system can also acquire the voltage, the temperature, the charging and discharging current and the like of the battery in real time, so that the phenomenon of overcharge or overdischarge of the battery is prevented.

Wherein, the movable platform comprises an aircraft, a robot, an electric vehicle or an automatic unmanned vehicle and the like.

For example, the battery 20 supplies power to a motor of the aircraft to control the propeller of the motor to rotate, so that the aircraft can fly; for another example, the battery 20 supplies power to a camera mounted on an aircraft for aerial photography or the like.

Wherein, this aircraft includes unmanned aerial vehicle, and this unmanned aerial vehicle includes rotor type unmanned aerial vehicle, for example four rotor type unmanned aerial vehicle, six rotor type unmanned aerial vehicle, eight rotor type unmanned aerial vehicle, also can be fixed wing unmanned aerial vehicle, can also be the combination of rotor type and fixed wing unmanned aerial vehicle, does not do the injecing here.

Unmanned aerial vehicles are classified into consumption-grade unmanned aerial vehicles, aerial photography unmanned aerial vehicles, crossing unmanned aerial vehicles or agricultural plant protection machines according to different applications. When these unmanned aerial vehicle applications, need the circulation operation sometimes, need quick charge just can satisfy the operation demand, improve the completion efficiency of circulation operation.

The robot comprises an educational robot, a Mecanum wheel omnidirectional chassis is used, a plurality of intelligent armors are arranged on the whole body, and each intelligent armor is internally provided with a hitting detection module which can rapidly detect physical hitting. Simultaneously still include the diaxon cloud platform, can rotate in a flexible way, cooperation transmitter accuracy, stability, launch crystal bullet or infrared light beam in succession, cooperation trajectory light efficiency gives the user more real shooting experience.

In some embodiments, in order to match with a cyclic operation or a fast charging scenario, the battery power can be ensured to meet the operation requirement. As shown in fig. 2, the battery 20 includes working capacity and reserved capacity, and by using the charging control method provided in the embodiment of the present application, the working capacity of the battery can be quickly fully charged, so as to meet the requirement of the operation, and at the same time, the charging efficiency of the battery is improved.

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 FIG. 3, the charger initially uses a pre-charge current I₀Pre-charging the battery for a period of time t₀Then, at constant current I₁Charging the battery, wherein the charging current in the constant current charging stage is unchanged, and the corresponding charging time is t₁. As charging continues, the battery voltage increases, reaching a charge limit voltage U at 90-95% of charging₁The charging process can not be carried out by constant current any more, and needs to be converted into constant voltage charging, namely, the constant voltage charging stage is started, and the charging time corresponding to the constant voltage charging stage is t₂The charging voltage is not changed, and the charging current is gradually decreased. Finally, entering a recharging stage, wherein the charging voltage firstly drops to a recharging voltage threshold U₂Then rises to the charging limit voltage U₁Corresponding to a charging time of t₃。

The pre-charge, also called trickle charge, is used to pre-charge, i.e. restore, a fully discharged battery, and the trickle charge current is generally about one tenth of the constant current charge current.

Constant current charging, when the battery voltage rises to a pre-charge voltage threshold U₀When the charging current is increased to perform constant current charging, the battery voltage is gradually increased along with the constant current charging process in the constant current charging stage, and the charging is performed in the constant current charging stageThe amount is about 90% -95% of the battery capacity.

Constant voltage charging, when the battery voltage rises to a charging limit voltage U₁When the constant current charging is finished, the battery starts a constant voltage charging stage, and the current is gradually reduced along with the charging process according to the saturation degree of the battery cell until the current is reduced to the pre-charging current I₀The charging is considered to be terminated. If the charger is not disconnected from the battery at this time, the battery may enter a recharge phase.

It should be noted that, in the four charging stages, the charging capacity in the constant-current charging stage is about 90% -95% of the battery capacity, the charging capacity in the constant-voltage charging stage is about 5% of the battery capacity, and the other two charging stages can be almost ignored. The constant-voltage charging stage takes a large amount of charging time in the whole charging process of the battery, and the charging time is even longer than that in the constant-current charging stage.

Taking 1C charging as an example, the time from 0% charging to 95% is about 57 minutes, and the whole charging process is more than 77 minutes by adding 20 minutes of the constant voltage charging stage and the charging time of the pre-charging stage; taking 3C charging as an example, the time from 0% charging to 95% is about 19 minutes, and the whole charging process is more than 39 minutes by adding 20 minutes of the constant voltage charging stage and the charging time of the pre-charging stage; taking 5C charging as an example, the time from 0% charging to 95% is about 11.4 minutes, and the charging time of the constant voltage charging phase and the charging time of the pre-charging phase is added, so that the whole charging process is more than 31.4 minutes. Where 1C, 3C, and 5C are the charge rates of the battery.

Therefore, by adopting the charging process, the battery generally needs a longer charging time, and cannot meet the requirements of cycle operation and other quick charging.

Therefore, the embodiment of the application provides a charging control method, a charger, a charging system and a storage medium, which can realize quick charging, meet the requirement of cycle operation and prolong the service life of a battery.

Referring to fig. 4, fig. 4 is a schematic flowchart illustrating steps of a charging control method according to an embodiment of the present disclosure. The charging control method is applied to a charger and used for charging the battery and realizing quick charging of the battery.

It should be noted that, in the embodiment of the present application, a preset charging strategy is configured in advance in the constant voltage charging phase of the charger, so that the charger charges the battery by using the preset charging strategy in the constant voltage charging phase.

Wherein, the preset charging strategy comprises one of the following: stopping charging, stopping charging after a preset charging time, and stopping charging when the charging current is reduced to a preset cut-off current.

The charging is stopped, i.e. the battery is no longer charged. For example, the charger automatically disconnects the charging circuit; for example, a stop command is sent to the micro control unit of the battery, so that the battery is disconnected from the charging switch to stop charging; for another example, the charger automatically disconnects the charging circuit and outputs a prompt message to prompt the user that the battery power is complete.

And stopping charging after a preset charging time is set, wherein the preset charging time is set according to actual requirements, for example, the preset charging time is 1 minute, 2 minutes or 3 minutes. Stopping charging after the preset time length; or stopping charging after the preset charging time and outputting prompt information to prompt the user that the battery power is finished. The preset charging time is a constant voltage charging stage.

When the charging current drops to a predetermined cut-off current, for example, the constant current charging current is 5.0A, and the predetermined cut-off current may be set to 4.9A, 4.8A, or 4.7A, and the specific value is not limited herein. Stopping charging when the charging current of the battery is reduced to a preset cut-off current, such as 4.9A; or stopping charging when the charging current of the battery is reduced to the preset cut-off current, and outputting prompt information to prompt a user that the electric quantity of the battery is finished.

In some embodiments, the predetermined duration is inversely related to the charging rate of the charger. For example, when the charging rate of the charger is 1C, the preset time duration is set to 3 minutes; when the charging rate of the charger is 3C, the preset time length is set to be 2 minutes; when the charging rate of the charger is 5C, the preset time length is set to be 1 minute. Since the constant-current charging durations corresponding to the charging rates 1C, 3C, and 5C are different, the constant-voltage charging duration can be controlled accordingly by setting the preset duration having the negative correlation. The requirement of the user on quick charging of the battery is met, the electric quantity of the battery is considered, and the experience degree of the user is improved.

In some embodiments, the predetermined cutoff current is positively correlated to the charging rate of the charger. For example, when the charging rate of the charger is 1C, the preset cutoff current is set to 4.7A; when the charging rate of the charger is 3C, the preset cut-off current is set to be 4.8A; when the charging rate of the charger is 5C, the preset cutoff current is set to 4.9A in the preset time. Because the constant-current charging time lengths corresponding to the charging rates of 1C, 3C and 5C are different, the preset cutoff current with positive correlation is set, and the constant-voltage charging time length can be correspondingly controlled. The requirement of the user on quick charging of the battery is met, the electric quantity of the battery is considered, and the experience degree of the user is improved.

As shown in fig. 4, the charge control method includes steps S101 to S103.

And S101, performing constant current charging on the battery.

In particular, it refers to charging the battery with a constant current, i.e. the battery is currently in a constant current charging phase. For example, as shown in FIG. 3, a constant current I is used₁The battery is charged.

In some embodiments, in order to better realize the quick charging of the battery, the battery can be charged with constant current when the battery is accessed. The method specifically comprises the following steps: determining whether a battery is accessed; and if the battery is determined to be connected, performing constant current charging on the battery. Therefore, the adoption of 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 the quick charging is realized.

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

Of course, the battery may be precharged (i.e., trickle-charged) first, and then the battery may be constant-current-charged after the completion of the precharging.

S102, acquiring charging parameters and/or battery parameters when the battery is subjected to constant current charging, and determining whether the battery enters a constant voltage charging stage according to the charging parameters and/or the battery parameters.

Specifically, a charging parameter for representing the end of constant-current charging or for representing the entering of a constant-voltage charging phase is acquired, or a battery parameter for representing the end of constant-current charging or for representing the entering of a constant-voltage charging phase is acquired. And determining whether the battery enters a constant voltage charging stage according to the charging parameters and/or the battery parameters.

For example, the current battery voltage of the battery is obtained, and it is determined whether the battery enters the constant voltage charging stage according to the current battery voltage. Wherein, whether the battery enters a constant voltage charging stage is determined according to the current battery voltage, which specifically comprises the following steps: acquiring a preset charging cut-off voltage, wherein the preset charging cut-off voltage is used for representing that the battery enters a constant voltage charging stage from a constant current charging stage; and determining whether the battery enters a constant voltage charging stage or not according to the current battery voltage and a preset charging cut-off voltage.

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

For example, the current battery voltage is 4.25V, the preset charge cut-off voltage is 4.20V, and the preset voltage threshold is set to 0.1V, so that it can be determined that the battery enters the constant voltage charging stage. Whether the battery enters a constant voltage charging stage or not can be quickly determined by presetting a voltage threshold.

For example, determining whether the current battery voltage is greater than or equal to a predetermined charge cutoff voltage; and if the current battery voltage is greater than or equal to the preset charging cut-off voltage, determining that the battery enters a constant-voltage charging stage.

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

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

For example, the present charging current of the battery is obtained; and determining whether the battery enters a constant-voltage charging stage or not according to the current charging current voltage. Wherein, whether the battery enters the constant voltage charging stage is confirmed according to the current charging current voltage, specifically: acquiring a preset charging cut-off current, wherein the preset charging cut-off current is used for representing that the battery enters a constant voltage charging stage from a constant current charging stage; and determining whether the battery enters a constant voltage charging stage or not according to the current charging current and a preset charging cut-off current.

For example, determining whether a difference between a preset charge cut-off current and a current charge current is less than a preset current threshold; and if the difference value between the preset charging cut-off current and the current charging current is smaller than the preset current threshold, determining that the battery enters a constant voltage charging stage.

For example, the preset charging cutoff current is 5.0A, the current charging current is 4.95A, the preset current threshold is 0.1A, and the difference between the preset charging cutoff current and the current charging current is 0.05A and is smaller than the preset current threshold 0.1A, so that the battery is determined to enter the constant voltage charging stage. The battery entering the constant-voltage charging stage can be quickly determined through the preset current threshold.

For example, determining that the current charging current is less than a preset charging cutoff current; and if the current charging current is smaller than the preset charging cut-off current, determining that the battery enters a constant-voltage charging stage.

For example, the preset charge cutoff current is 5.0A, and the current charge current is 4.99A, thereby determining that the battery enters the constant voltage charging phase. By determining that the current charging current is smaller than the preset charging cutoff current, the battery can be accurately determined to enter a constant voltage charging stage.

For another example, the charging current of the battery is monitored; determining a variation trend of a charging current of the battery; and if the variation trend is changed from a steady trend to a descending trend, determining that the battery enters a constant-voltage charging stage.

Specifically, as shown in fig. 3, when the monitored variation trend of the charging current is the current curve in fig. 3, and the current curve changes from a steady trend to a downward trend (i.e., when an inflection point appears), it is determined that the battery enters the constant voltage charging stage.

And prompting that the battery enters the constant voltage charging stage when the battery is determined to enter the constant voltage charging stage so as to prompt a user that the battery enters the constant voltage charging stage. Specifically, the prompting mode includes at least one of the following: voice prompt, display prompt and vibration prompt. The voice prompt comprises voice broadcast, buzzing prompt and the like; and displaying prompt information such as characters and animation, or forming a light language prompt through an indicator light.

And S103, if the battery enters a constant voltage charging stage, charging the battery by adopting a preset charging strategy corresponding to the constant voltage charging stage.

Illustratively, if the battery is determined to enter the constant-voltage charging stage, the battery is stopped from being continuously charged; or stopping continuously charging the battery and outputting prompt information to prompt the user that the battery charging is finished.

Illustratively, if the battery is determined to enter the constant-voltage charging stage, the battery is stopped to be continuously charged after being charged for a preset time length in the constant-voltage charging stage; or stopping continuously charging the battery after the charging is carried out for a preset time in the constant voltage charging stage, and outputting prompt information to prompt a user that the charging of the battery is finished. For example, the battery is stopped from being charged after 1 minute in the constant voltage charging stage.

For example, if it is determined that the battery enters the constant voltage charging stage, the battery is continuously charged in the constant voltage charging stage until the charging current is reduced to a preset cutoff current, and the battery is stopped to be continuously charged; or, in the constant-voltage charging stage, the battery is continuously charged until the charging current is reduced to the preset cut-off current, and the battery is stopped to be continuously charged, and prompt information is output to prompt a user that the charging of the battery is finished. For example, the battery enters a constant voltage charging stage, the battery is charged at a constant voltage, and when the charging current drops to 4.9A, the battery is stopped from being charged.

In some embodiments, when the charger charges the battery using the charging control method, the charger may further record charging information of the battery, where the charging information includes at least one of: the charging current corresponding to the constant current charging time, the constant voltage charging time and the constant voltage charging time. And analyzing the battery state according to the charging information to improve the charging mode, wherein the battery state is, for example, whether the abnormality occurs or not, the service life and the like.

The charging control method provided by each embodiment can be applied to an unmanned aerial vehicle, for example, an agricultural plant protection machine, and the charging control method can realize quick charging, so that the agricultural plant protection machine does not need more batteries, the cycle operation efficiency of the agricultural plant protection machine can be improved, the cost is further reduced, and the service life of the batteries is prolonged.

Therefore, the charger can realize the quick charging of the battery by using the charging control method disclosed by the embodiment, and the efficiency of the cycle operation is improved. In the process of realizing quick charging, the battery is in a 'shallow charging and shallow discharging' mode, so that the service life of the battery is further prolonged.

Referring to fig. 5, fig. 5 is a schematic flowchart illustrating steps of another charging control method according to an embodiment of the present disclosure. The charging control method is applied to a charger and used for charging the battery, and the quick charging of the battery is realized.

As shown in fig. 5, the charge control method includes steps S201 to S204.

S201, determining whether the charger uses a quick charging mode, wherein a constant voltage charging stage of the quick charging mode adopts a preset charging strategy to charge the battery;

s202, if the charger uses the quick charging mode, carrying out constant current charging on the battery;

s203, acquiring charging parameters and/or battery parameters when the battery is subjected to the constant-current charging, and determining whether the battery enters a constant-voltage charging stage according to the charging parameters and/or the battery parameters;

and S203, if the battery enters a constant voltage charging stage, charging the battery by adopting a preset charging strategy corresponding to the constant voltage charging stage.

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

Wherein, whether the charger charges the battery by using a quick charging mode is determined, specifically: determining whether a user selects a fast charge mode; and if the user selects the quick charging mode, controlling the charger to charge the battery by using the quick charging mode.

Specifically, as shown in fig. 6, the charger 10 is used to charge a battery installed in the drone 30. For example, the charger 10 is provided with a key corresponding to the fast charging mode, that is, the user can select the fast charging mode by pressing the key; or, a touch display screen is arranged on the charger 10, and a quick charging mode is displayed on the touch display screen for the user to select; still alternatively, the charger 10 receives an instruction for selecting the fast charging mode from another terminal device, such as a mobile phone, and controls the charger to charge the battery using the fast charging mode according to the instruction.

In some embodiments, the fast charge mode may be set to a default charge mode of the charger. For example, as the charger 10 in fig. 6 is a charger of the agricultural plant protection machine 30, since the agricultural plant protection machine 30 needs to work in a circulating manner, the default charging mode of the charger adapted thereto may be set as the fast charging mode.

In addition, if the user does not select the fast charging mode, the charger is controlled to charge the battery in the slow charging mode; the slow charging mode at least comprises a constant current charging stage and a constant voltage charging stage, and the preset charging strategy is not adopted to charge the battery in the constant voltage charging stage. For example, the slow charging mode includes a trickle charging phase, a constant current charging phase, and a constant voltage charging phase. The user can conveniently select the method according to the requirement, and the experience degree of the user is further improved.

In some embodiments, after the battery is charged by using the preset charging strategy corresponding to the constant voltage charging stage, charging indication information including a remaining capacity threshold may be further sent to the battery. The battery stores the charging indication information after receiving the charging indication information, and stops discharging when the residual capacity reaches the residual capacity threshold value when the battery supplies power.

For example, the remaining power threshold may be 2% of the battery power, or may have other values, which are not limited herein. When the battery supplies power to the load, if the remaining capacity is detected to be 2%, the discharging is stopped, so that the battery can store at least 2% of the capacity.

In some embodiments, to enable fast charging of the battery, and to improve the user experience. Whether to charge the battery using the quick charge mode may be determined according to a remaining capacity of the battery. Correspondingly, the residual capacity of the battery is obtained, and whether the residual capacity of the battery is larger than or equal to a residual capacity threshold value is judged; and if the residual capacity of the battery is greater than or equal to the residual capacity threshold value, determining that the charger uses the quick charging mode.

Because the quick charging mode provided by the embodiment of the application corresponds to the preset charging strategy, the charging time is greatly shortened, and the charging efficiency of the battery is further improved. Meanwhile, shallow charging and shallow discharging can be realized, wherein the shallow charging and shallow discharging refers to that the battery is not fully charged during charging and is not over discharged during discharging, so that the service life of the battery is prolonged.

Referring to fig. 7, fig. 7 is a schematic flowchart illustrating steps of another charging control method according to an embodiment of the present disclosure. The charging control method is applied to a charger and used for charging the battery and realizing quick charging of the battery.

It should be noted that, a preset charging strategy is configured in advance in the constant voltage charging stage of the charger, so that the charger charges the battery by using the preset charging strategy in the constant voltage charging stage.

Wherein the battery comprises a reserve capacity. For example, as shown in fig. 2, the battery 20 may include a working capacity and a reserved capacity, the working capacity satisfies an operation requirement, and the reserved capacity may ensure that a quick charge may be realized and the operation requirement may be satisfied when the battery is charged by using the charging control method provided in the present application.

For example, the agricultural drone needs to perform a cyclic operation, and in order to improve the operation efficiency, when a battery of the agricultural drone is installed, the operating capacity is set to 18Ah and the reserve capacity is set to 0.9 Ah.

In some embodiments, the method of charging the battery may be: determining whether the battery includes a reserved capacity; and if the battery comprises the reserved capacity, charging the battery by adopting a preset charging strategy. The preset charging strategy may be: carrying out constant current charging on the battery; after the constant current charging of the battery is finished, the battery is charged and managed by adopting one of the following charging modes: stopping charging, stopping charging after a preset charging time, and stopping charging when the charging current is reduced to a preset cut-off current. The condition of finishing the constant current charging of the battery can be a charging parameter and/or a battery parameter when the battery is subjected to the constant current charging, and whether the constant current charging stage of the battery is finished or not is determined according to the charging parameter and/or the battery parameter. In some embodiments, the operating capacity and the reserve capacity are determined according to a charging capacity ratio of the constant current charging and the constant voltage charging. For example, if the charging capacity corresponding to the constant-current charging is 90%, the charging capacity corresponding to the constant-voltage charging is 5%, and the working capacity required for the operation is 18Ah, the reserved capacity may be set to 0.9 Ah.

As shown in fig. 7, the charge control method may include steps S301 to S304.

S301, determining whether the battery comprises reserved capacity;

s302, if the battery comprises the reserved capacity, performing constant current charging on the battery;

s303, after the constant current charging of the battery is finished, charging the battery by adopting a preset charging strategy;

the battery capacity of the battery is obtained, and whether the battery comprises reserved capacity is determined according to the battery capacity, for example, the obtained battery capacity is 18.9Ah, and then the battery capacity of the battery can be determined to comprise the reserved capacity. Therefore, the battery to be charged can be determined to be a battery carried by the agricultural unmanned aerial vehicle, and the battery needs to be charged in a quick charging mode.

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

As shown in fig. 8, when the charger charges the battery, if it is determined that the battery includes the reserved capacity, the battery is subjected to constant current charging. If the battery comprises the reserved capacity, performing constant current charging on the battery; after the constant current charging of the battery is finished, charging the battery by adopting a preset charging strategy; wherein the preset charging strategy comprises one of: stopping charging, stopping charging after a preset charging time, and stopping charging when the charging current is reduced to a preset cut-off current.

In some embodiments, a charging parameter and/or a battery parameter when the battery is subjected to constant current charging are obtained, and whether the battery finishes the constant current charging is determined according to the charging parameter and/or the battery parameter; after the battery is determined to finish the constant current charging, a preset charging strategy is adopted to charge the battery, such as stopping charging, stopping charging after a preset charging time or stopping charging when the charging current is reduced to a preset cut-off current. Thereby shortening the charging time of the battery and improving the service life of the battery.

In some embodiments, after the constant-current charging of the battery is finished, the charging parameters and/or battery parameters during the constant-current charging of the battery are obtained, and whether the battery enters a constant-voltage charging stage is determined according to the charging parameters and/or battery parameters; when the battery is determined to enter the constant voltage charging stage, a preset charging strategy corresponding to the constant voltage charging stage is adopted to charge the battery, for example, the charging is stopped after a preset time period, or the charging is stopped when the charging current is reduced to a preset cut-off current. Thereby shortening the charging time of the battery and improving the service life of the battery.

In some embodiments, it may also be determined whether a battery is accessed first; if it is determined that the battery is accessed, step S301 is executed. Namely, when the battery is accessed, the battery is charged by using the charging control method provided by the embodiment of the application. Therefore, the charging time of the battery is greatly shortened, and the quick charging is realized.

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

In some embodiments, it may also be determined whether the charger uses a fast charging mode, where a constant-voltage charging stage of the fast charging mode charges the battery using a preset charging strategy; and if the charger uses a quick charging mode, executing the step of carrying out constant current charging on the battery.

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

Wherein, confirm whether the charger uses the mode of charging for the battery soon, specifically be: determining whether a user selects a fast charge mode; and if the user selects the quick charging mode, controlling the charger to charge the battery by using the quick charging mode.

And if the user does not select the quick charging mode, controlling the charger to charge the battery by using the slow charging mode.

The slow charging mode at least comprises a constant current charging stage and a constant voltage charging stage, and the battery is charged in the constant voltage charging stage without adopting the preset charging strategy.

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 charge mode may be set to a default charge mode of the charger.

In some embodiments, after the battery is charged by adopting a preset charging strategy corresponding to the constant-voltage charging stage, charging indication information can be sent to the battery, wherein the charging indication information comprises a residual capacity threshold value; the battery stores the charging indication information after receiving the charging indication information, and stops discharging when the residual capacity reaches the residual capacity threshold value when the battery supplies power.

In some embodiments, to enable fast charging of the battery, and to improve the user experience. Whether to charge the battery using the quick charge mode may be determined according to a remaining capacity of the battery. Correspondingly, acquiring the residual capacity of the battery, and determining whether the residual capacity of the battery is greater than or equal to a residual capacity threshold value; and if the residual capacity of the battery is greater than or equal to the residual capacity threshold value, determining that the charger uses the quick charging mode.

According to the charging control method provided by the embodiment of the application, the preset charging strategy is used for charging the battery with the preset capacity in the constant voltage stage, so that the charging time can be greatly shortened, the charging efficiency of the battery is improved, and the smooth operation can be determined. Meanwhile, the 'shallow charging and discharging' can be realized, so that the service life of the battery is prolonged.

Referring to fig. 9, fig. 9 is a schematic flowchart illustrating steps of another charging control method according to an embodiment of the present disclosure. The charging control method is applied to a charger and used for charging the battery and realizing the quick charging of the battery.

It should be noted that, in the embodiment of the present application, a preset charging strategy is configured in advance in the charger, so that the charger charges the battery by using the preset charging strategy when the constant current charging is finished.

As shown in fig. 9, the charge control method includes steps S401 to S403.

S401, constant current charging is carried out on the battery;

s402, acquiring charging parameters and/or battery parameters when the battery is subjected to constant current charging, and determining whether the battery finishes the constant current charging according to the charging parameters and/or the battery parameters;

and S403, if the constant current charging of the battery is finished, charging the battery by adopting a preset charging strategy.

In some embodiments, it may be determined whether a battery is accessed; and if the battery is determined to be connected, performing constant current charging on the battery. Therefore, pre-charging is not needed, the charging time is greatly shortened, and quick charging is realized.

In some embodiments, the battery may also be trickle charged before being constant current charged. Namely, a fast charge is realized while improving the battery life.

In some embodiments, it may also be determined whether the charger uses a fast charge mode; and if the charger uses the quick charging mode, the battery is charged at constant current. And in the quick charging mode, a preset charging strategy is adopted to charge the battery when the constant current charging is finished. With the fast mode, fast charging of the battery is achieved.

Among them, in order to shorten the charging time, quick charging is realized. The fast charge mode may include only a constant current charging phase; alternatively, the fast charge mode may include only a constant current charging phase and a constant voltage charging phase.

In some embodiments, to improve the user experience. Determining whether the charger charges the battery using a fast charging mode, specifically, the method may include: determining whether a user selects a fast charge mode; and if the user selects the quick charging mode, controlling the charger to charge the battery by using the quick charging mode.

If the user does not select the quick charging mode, the charger is controlled to charge the battery in the slow charging mode; the slow charging mode at least comprises a constant current charging stage, and the battery is not charged by adopting a preset charging strategy when the constant current charging stage is finished.

In some embodiments, to achieve fast charging, the fast charging mode may be set to the default charging mode of the charger. For example, the charger of the agricultural plant protection machine is generally required to perform a cycling operation, so that the default charging mode of the charger of the agricultural plant protection machine can be set to the quick charging mode.

The charging parameters used for representing the end of the constant-current charging or the battery parameters used for representing the end of the constant-current charging can be obtained. And determining whether the battery enters a constant voltage charging stage according to the charging parameters and/or the battery parameters.

Illustratively, for example, the current battery voltage of the battery is obtained; acquiring a preset charging cut-off voltage, wherein the preset charging cut-off voltage is used for representing that the battery enters a constant voltage charging stage from a constant current charging stage; determining whether the current battery voltage is greater than or equal to a preset charge cutoff voltage; and if the current battery voltage is greater than or equal to the preset charging cut-off voltage, determining that the battery finishes the constant current charging. The preset charge cut-off voltage may be a constant voltage charge voltage of the battery.

For example, obtaining the current charging current of the battery; acquiring a preset charging cut-off current, wherein the preset charging cut-off current is used for representing that the battery enters a constant voltage charging stage from a constant current charging stage; determining whether the current charging current is smaller than a preset charging cut-off current; and if the current charging current is smaller than the preset charging cut-off current, determining that the battery finishes the constant current charging. The preset charge cut-off current may be a constant current charge current.

Illustratively, the charging current of the battery may also be monitored; determining a trend of change in a charging current of the battery; and if the variation trend is changed from a steady trend to a descending trend, determining that the battery finishes the constant current charging. For example, in FIG. 3, the current curve is represented by t₁To t₂When the time begins to trend downwards, the constant current charging can be determined to be finished.

In some embodiments, to enable fast charging of the battery, and to improve the user experience. Whether to charge the battery using the quick charge mode may be determined according to a remaining capacity of the battery. Accordingly, acquiring the residual capacity of the battery; and if the residual capacity of the battery is greater than or equal to the residual capacity threshold value, determining that the charger uses the quick charging mode.

At present, when an existing battery, such as a lithium ion battery, is charged, some internal short circuits, such as micro short circuits, often occur, which may cause accidents such as battery failure and fire. Because the internal short circuit of the battery has certain contingency, the detection is difficult, and some related detection circuits are used for short circuit detection at present, but the hardware cost is increased. Meanwhile, the problem that effective protection cannot be carried out after short circuit is detected exists.

Therefore, when the battery is charged by using the charging control method provided by the embodiment of the application, whether the battery is short-circuited or not can be identified and the battery is protected. Specifically, whether the battery is short-circuited is determined according to the battery parameters; if the battery is short-circuited, determining a battery protection strategy corresponding to the short-circuited battery; and controlling the battery to execute a battery protection strategy.

The battery parameters comprise at least one of a charging/discharging capacity ratio, a charging voltage and a charging time. The charge-discharge capacity ratio is the ratio of the charge capacity to the discharge capacity, and the charge capacity and the discharge capacity are obtained through ampere-hour integral calculation.

Whether the battery is short-circuited can be determined by judging whether the battery parameter is abnormal. For example, whether the battery parameter is abnormal is determined by comparing with a standard parameter, wherein the standard parameter is a parameter when the battery is normal.

For example, whether the battery is short-circuited is determined according to battery parameters, specifically: acquiring standard parameters of a battery; and determining whether the battery is short-circuited according to the difference between the battery parameter and the standard parameter.

For example, determining whether the difference between the battery parameter and the standard parameter is within a preset range; if the difference between the battery parameter and the standard parameter is within a preset range, determining that the battery is not short-circuited; and if the difference between the battery parameter and the standard parameter is not in the preset range, determining that the battery is short-circuited. Whether the short circuit of the battery occurs can be accurately determined through the preset range.

The preset range is set according to the type of the battery, the preset ranges of different types of batteries are different, and the different types of batteries comprise different battery capacity or different battery core materials, such as lithium ion batteries and lead storage batteries.

For another example, determining whether the battery parameter is greater than a standard parameter; if the battery parameter is larger than the standard parameter, determining that the battery is short-circuited; and if the battery parameter is less than or equal to the standard parameter, determining that the battery is not short-circuited. It is thus possible to quickly determine whether a short circuit has occurred in the battery.

For example, if the battery parameter is the charge-discharge capacity ratio, the standard parameter is the standard charge-discharge capacity ratio. Determining whether the battery is short-circuited, specifically: determining whether the charge-discharge capacity ratio is greater than a standard charge-discharge capacity ratio; if the charge-discharge capacity ratio is larger than the standard charge-discharge capacity ratio, determining that the battery is short-circuited; and if the charge-discharge capacity ratio is smaller than or equal to the standard charge-discharge capacity ratio, determining that the battery is not short-circuited.

In a normal state, the charge-discharge capacity ratio of the battery is generally in a fixed range, and the charge-discharge capacity ratio of the battery with the short circuit is larger, so that whether the battery has the short circuit or not can be determined according to the change of the charge-discharge capacity ratio.

For example, in a lithium ion battery, the charge-discharge capacity ratio fluctuates within the range of 1.01-1.05 in a normal state, and in a lithium ion battery with a micro short circuit, the charge-discharge capacity ratio is far larger than 1, so that whether the battery is short-circuited or not is determined according to the change of the charge-discharge capacity ratio. 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 that the battery is short-circuited, a charging voltage and a charging time corresponding to the charging of the battery may also be obtained, and the charging voltage and the charging time are used to represent battery parameters of the battery for determining whether the battery is short-circuited.

Accordingly, whether the battery is short-circuited or not is determined, and whether the battery is short-circuited or not can be determined according to the charging voltage and the charging time corresponding to the charging of the battery.

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

As shown in fig. 10, fig. 10 is a graph showing the variation of the charging voltage of the battery with short circuit along with the charging time; as shown in fig. 11, fig. 11 is a graph showing a variation trend of the charging voltage of the battery with the charging time in the normal state. Therefore, whether the short circuit phenomenon occurs in the battery can be determined according to the change trend graph corresponding to the charging voltage and the charging time.

As can be seen from fig. 10 and 11, the difference is more apparent in the constant voltage charging stage in order to quickly and accurately determine whether the battery is short-circuited. The acquired charging voltage may include a partial constant voltage charging voltage; accordingly, the charging time includes at least a 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 mode for protecting the battery when the battery is in the short circuit. The battery protection strategy may be implemented by a charger controlled battery.

Wherein the battery protection strategy comprises at least one of: and discharging the battery to a preset voltage range corresponding to the safe storage of the battery, and controlling the battery to be in a locking state.

Of course, the battery protection strategy may also include other strategy approaches. For example, the prompt message is output to prompt for processing the battery according to the prompt message, and the prompt message may be a voice prompt message, a text prompt message, an indicator light prompt message, or the like.

In some embodiments, the battery protection strategies include multiple battery protection strategies, each level of the multiple battery protection strategies has different protection modes, and short-circuit degrees of short circuits corresponding to each level of the multiple battery protection strategies are different, so that the corresponding protection strategies are determined according to the short-circuit degrees of the batteries, and the batteries are effectively and reasonably protected.

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

Wherein the first level battery protection strategy comprises: and outputting prompt information for prompting the user to repair and maintain.

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

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

Specifically, the short circuit degree corresponding to the short circuit of the battery may be determined first; and determining a multi-stage battery protection strategy corresponding to the short circuit according to the short circuit degree.

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

Wherein, the determining the short-circuit degree of the short circuit specifically comprises: and determining the difference degree between the battery parameter and the standard parameter, and determining the short circuit degree according to the difference degree.

Illustratively, the charge-discharge capacity ratio of the battery exceeds the standard charge-discharge capacity ratio in the range of 0.05 to 0.1, defined as the short-circuit degree a; the ratio of the charge-discharge capacity of the battery exceeds the standard charge-discharge capacity ratio and is in the range of 0.1 to 0.2, and the ratio is defined as the short circuit degree b; the ratio of the charge-discharge capacity of the battery exceeding the standard charge-discharge capacity is more than 0.2, and is defined as the short circuit degree c.

For example, if the ratio of the charging/discharging capacity of the battery is 1.20 and the standard constant voltage charging time is 1.01 to 1.05, the short-circuit degree of the battery can be determined to be the short-circuit degree b, so that the multi-stage battery protection strategy corresponding to the short-circuit of the battery is determined to be the second-stage battery protection strategy.

Specifically, discharging the battery through a preset discharge resistor in the battery management system to a preset voltage range; and/or controlling a charging switch and a discharging switch of the battery to be in an off state so that the battery is in a locking state, namely permanently disabled.

The preset voltage range is a safe voltage range, and a range value near 0V may be set, and the specific range value is not limited herein.

In some embodiments, other battery protection strategies may also be employed, such as outputting a prompt to prompt the user that the battery is shorted. The prompting message includes voice prompting message, text prompting message and/or indicating lamp prompting message, such as lamp language composed of different LEDs to prompt the user that the battery is short-circuited.

It can be understood that when the battery is in a charging state, the battery protection strategy is executed after the battery is detected to be short-circuited and the charging is stopped; the battery protection strategy is implemented while securing a mobile platform using the battery when the battery is in a discharged state.

For example, if it is determined that the battery is short-circuited during the charging of the battery, the charging of the battery is stopped, and the battery protection strategy is executed.

The charging control method provided by each embodiment can realize quick charging and prolong the service life of the battery, can accurately and quickly identify whether the battery is short-circuited on line, and can protect the battery through a battery protection strategy when the battery is short-circuited, so that the use safety of the battery is improved.

Referring to fig. 12, fig. 12 is a schematic flowchart illustrating steps of another charging control method according to an embodiment of the present disclosure. The charging control method is applied to a charger and used for charging the battery and realizing the quick charging of the battery.

As shown in fig. 12, the charge control method includes step S501 and step S502.

S501, charging the battery in a first preset charging mode;

and S502, after the battery is charged in a first preset charging mode, charging the battery by adopting a preset charging strategy.

The first preset charging mode can be constant current charging or trickle charging and then constant current charging. Other modes are also possible.

The charging control method uses a scene of quick charging, for example, an agricultural unmanned aerial vehicle for circular operation needs to be charged when the electric quantity is insufficient.

Illustratively, the charger carries out constant current charging to agricultural unmanned aerial vehicle's battery, and when carrying out the constant current charging to agricultural unmanned aerial vehicle's battery and finishing, adopt and preset the charge strategy for the battery charges. For example, the charging is stopped, or the charging is stopped after a preset time period, or the charging is stopped when the charging current is reduced to a preset cutoff current. Through the charging control method, the charging time can be greatly shortened, the charging efficiency is improved, the quick charging is realized, and the operating efficiency of the agricultural unmanned aerial vehicle is further improved.

It should be noted that when the constant current charging of the battery is finished, whether the constant current charging of the battery is finished or not may be determined by obtaining the charging parameters and/or the battery parameters when the constant current charging of the battery is carried out, and according to the charging parameters and/or the battery parameters. The method may also be determined according to a preset constant current charging duration, and when the charging time for performing the constant current charging on the battery reaches the preset constant current charging duration, the constant current charging on the battery is determined to be finished.

In some embodiments, the predetermined constant current charging period is related to the charging rate of the charger, thereby ensuring that the battery has sufficient charge for operation 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, presetting the constant-current charging time to be 18 minutes; when the charging rate is 5C, the preset constant-current charging time is 11 minutes.

With the rapid development of the movable platform, the movable platform is larger in size and heavier in load, so that the rated capacity and output power of a battery required for the movable platform are higher and higher, however, the higher the rated capacity is, the larger the battery is, the higher the heat generation amount of the battery is, thereby causing the internal temperature of the battery to rise.

Therefore, no matter the battery is normally charged or the battery is rapidly charged by using the charging control method provided by the embodiment of the application, the battery of the movable platform needs to be cooled for a period of time, and then the battery can be charged. Is not favorable for the requirement of circular operation.

And, the temperature of battery is reduced to the required time of normal temperature by high temperature nature longer, usually more than 30 minutes, in order that portable platform can run for a long time, traditional scheme need use the polylith battery to take turns, and the cost is higher, and user experience is not good, and places the battery in the temperature of surface of water in order to reduce the battery, has very big risk, and the waterproof performance of battery can lead to leaking the electric leakage because of the difference of technology for the battery damages, and user experience is not good.

In order to further improve the working efficiency, before the battery is charged by using the charging control method, the battery can be controlled to carry out cooling treatment, and then the movable platform can be immediately stopped and charged and immediately stopped and quickly charged. If movable platform is unmanned aerial vehicle, then can realize "falling to the ground and filling promptly" and "fall to the ground and fill soon", and then improved unmanned aerial vehicle's operating efficiency.

Illustratively, the current temperature of a battery of the movable platform is acquired; determining whether the current temperature is greater than or equal to a preset work limit temperature, wherein the preset work limit temperature is greater than a preset charging limit temperature; and if the current temperature is greater than or equal to the preset working limit temperature, reducing the current temperature of the battery so as to enable the current temperature of the battery to be less than the preset charging limit temperature, and conveniently charging the battery immediately when the battery meets the preset condition to be charged.

Illustratively, the current temperature of a battery of the movable platform is acquired; determining whether the current temperature is greater than or equal to a preset work limit temperature, wherein the preset work limit temperature is greater than a preset charging limit temperature; if the current temperature is greater than or equal to the preset working limit temperature, reducing the current temperature of the battery so that the current temperature of the battery is less than the preset charging limit temperature, and conveniently charging the battery immediately when the battery meets the preset condition to be charged; carrying out constant current charging on the battery; after the constant current charging of the battery is finished, a preset charging strategy is adopted to charge the battery, wherein the preset charging strategy comprises one of the following strategies: stopping charging, stopping charging after a preset charging time, and stopping charging when the charging current is reduced to a 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 acquired through the thermistor. The battery discharges continuously in the process of supplying power to the movable platform, the temperature of the battery rises gradually, and the resistance value of the thermistor decreases gradually along with the rise of the temperature of the battery. The current temperature of the battery can be rapidly determined through the current resistance value of the thermistor and the relation between the temperature and the resistance value, so that the temperature of the battery is reduced when the temperature of the battery is higher, the service life of the battery is prolonged, the battery can be immediately charged when the battery needs to be charged, and the operation efficiency is improved.

After the current temperature of the battery is acquired, it is determined whether the current temperature of the battery is greater than or equal to a preset operation limit temperature. The preset working limit temperature is greater than the preset charging limit temperature, the preset working limit temperature is used for guaranteeing the service life of the battery and is the temperature of the battery set by normal work, the preset charging limit temperature is the temperature of the battery set by a user for guaranteeing that the battery can be normally charged, the preset working limit temperature and the preset charging limit temperature can be set based on actual conditions, and the method is not specifically limited in the application. For example, the preset operation 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 battery cells, and a heat dissipation plate is disposed between adjacent battery cells, and the heat dissipation plate is configured to dissipate heat for the battery cells so that temperatures between the battery cells are substantially equal. The temperatures of the battery cells are approximately equal, which means that the temperature difference between the battery cells is smaller than or equal to a preset temperature difference. The preset temperature difference value may be set based on an actual situation, which is not specifically limited in this application. Optionally, the preset temperature difference is 1 ℃. Through set up the heating panel between adjacent electric core for relative comparatively balanced between each electric core, can prevent that the high temperature of single electric core from leading to the condition emergence of battery damage, and then improved the life of battery.

In some embodiments, the outer surfaces of the plurality of battery cells are provided with heat dissipation layers, and the heat dissipation layers are in contact with the housing of the battery to conduct heat generated by the battery cells to the outside so as to reduce the current temperature of the battery. The heat dissipation layer is arranged on the outer surfaces of the plurality of battery cores and is in contact with the shell of the battery, so that heat generated by the battery cores can be conducted to the outside, the temperature of the battery can be reduced, the temperature rise of the battery is slowed down, and the service life of the battery can be prolonged.

In some embodiments, the battery comprises a tab plate, a tab, and at least one cell connected to the tab plate via the tab; and a gap between the battery cell and the lug is filled with a heat conduction material so as to dissipate heat of the battery cell and/or the lug. The heat conductive material includes, but is not limited to, heat conductive silicone, heat conductive mica sheet, heat conductive silicone sheet, heat conductive filler, and heat conductive silicone grease. The heat conduction material is filled in the gap between the battery core and the lug, so that the battery core and/or the lug can be cooled, the temperature rise of the battery can be slowed down, and the service life of the battery can be prolonged.

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

In some embodiments, the movable platform comprises a spray device comprising a tank, a spray conduit for conveying liquid in the tank to the spray head for spraying the liquid, and a spray head, the spray conduit being in contact with the housing of the battery to enable the liquid conveyed in the spray conduit to reduce the current temperature of the battery. Through setting up the position of spraying pipeline and battery for the shell contact of spraying pipeline and battery makes the liquid of carrying in the spraying pipeline can reduce the temperature of battery, can slow down the temperature rise of battery, is convenient for when the battery needs to charge, can charge for the battery immediately, improves user experience.

In some embodiments, the movable platform includes a rotorcraft, a rotor of the rotorcraft rotating to create a wind field, a flow direction of the wind field passing through a housing of the battery to reduce a current temperature of the battery. The position and/or the rotor through setting up the battery form the flow direction of wind field for the flow direction of wind field is through the shell of battery, with the shell to the battery bloies, thereby takes away the heat that the battery produced, with the temperature that reduces the battery, can slow down the temperature rise of battery, is convenient for when the battery needs to charge, can charge for the battery immediately, improves user experience.

And if the current temperature of the battery is greater than or equal to the preset working limit temperature, reducing the current temperature of the battery so that the current temperature of the battery can be less than the preset charging limit temperature, and the battery can be immediately charged when meeting the preset charging condition. Wherein the preset condition to be charged comprises at least one of the following conditions: the battery stops supplying power to the movable platform, the movable platform completes the operation task, and the residual electric quantity of the battery is smaller than a preset electric quantity threshold value.

The charging control method provided by the embodiment can be specifically applied to an unmanned aerial vehicle, for example, an agricultural plant protection machine, and the agricultural plant protection machine needs to perform circulating operation, so that the charging control method can realize 'charging when falling to the ground' or 'falling to the ground fast charging', does not need more batteries, can improve the circulating operation efficiency of the agricultural plant protection machine, reduces the cost, ensures the operation safety of the unmanned aerial vehicle, and prolongs the service life of the batteries.

The embodiment of the invention also provides a charging control method, which can be applied to a charger, wherein the charger is used for charging a battery, and the method comprises the following steps: charging the battery in a first preset charging mode; after the battery is charged in a first preset charging mode, charging the battery by adopting a preset charging strategy; wherein the preset charging strategy comprises one of: stopping charging, stopping charging after a preset charging time, and stopping charging when the charging current is reduced to a preset cut-off current. The first preset charging mode may include at least one of: constant current charging, trickle charging and constant current charging, and step-by-step voltage/current charging.

Wherein, step-by-step high voltage charging can be: the output voltage is dynamically adjusted between a first voltage and a second voltage, and the adjustment step is from a first voltage step value to a 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, any of the charging control methods disclosed in the above embodiments may be applied to the present embodiment without conflict.

Referring to fig. 13, fig. 13 is a schematic block diagram of a charger according to an embodiment of the present application. The charger comprises a processor 11, a memory 12 and a charging circuit 13, wherein the charging circuit 13 is connected with the processor 11, and is also connected with an external power supply and a battery for charging the battery.

Specifically, the Processor 11 may be a Micro-controller Unit (MCU), a Central Processing Unit (CPU), a Digital Signal Processor (DSP), or the like.

Specifically, the Memory 12 may be a Flash chip, a Read-Only Memory (ROM) magnetic disk, an optical disk, a usb disk, or a removable hard disk.

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

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

carrying out constant current charging on the battery; acquiring charging parameters and/or battery parameters when the battery is subjected to constant-current charging, and determining whether the battery enters a constant-voltage charging stage according to the charging parameters and/or the battery parameters; if the battery enters a constant voltage charging stage, charging the battery by adopting a preset charging strategy corresponding to the constant voltage charging stage;

In some embodiments, the processor is further configured to:

determining whether a battery is accessed; if the battery is determined to be accessed, executing the step of performing constant current charging on the battery; or,

before the constant current charging is carried out on the battery, trickle charging is also carried out on the battery.

In some embodiments, the processor is further configured to:

determining whether the charger uses a quick charging mode, wherein a constant voltage charging stage of the quick charging mode adopts a preset charging strategy to charge the battery; and if the charger uses the quick charging mode, executing the step of carrying out constant current charging on the battery.

In some embodiments, the fast charge mode comprises a constant current charging phase; or the quick charging mode comprises a constant current charging stage and a constant voltage charging stage.

In some embodiments, the processor implements the determining whether the charger is to charge the battery using a fast charge mode, comprising:

determining whether a user selects a fast charge mode; and if the user selects the quick charging mode, controlling the charger to charge the battery by using the quick charging mode.

In some embodiments, the processor further implements:

if the user does not select the quick charging mode, controlling the charger to charge the battery by using a slow charging mode;

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

In some embodiments, the processor further implements:

and setting the quick charging mode as a default charging mode of the charger.

In some embodiments, the obtaining, by the processor, the charging parameter and/or the battery parameter when the constant-current charging is performed on the battery, and determining whether the battery enters a constant-voltage charging stage according to the charging parameter and/or the battery parameter includes:

acquiring the current battery voltage of the battery; and determining whether the battery enters a constant voltage charging stage or not according to the current battery voltage.

In some embodiments, said processor implementing said determining whether said battery enters a constant voltage charging phase based on said current battery voltage comprises:

acquiring a preset charging cut-off voltage, wherein the preset charging cut-off voltage is used for representing that the battery enters a constant voltage charging stage from a constant current charging stage; and determining whether the battery enters a constant voltage charging stage or not according to the current battery voltage and the preset charging cut-off voltage.

In some embodiments, the determining whether the battery enters a constant voltage charging phase according to the current battery voltage and the preset charge cutoff voltage includes:

and if the difference value between the current battery voltage and the preset charging cut-off voltage is smaller than a preset voltage threshold, determining that the battery enters a constant voltage charging stage.

and if the current battery voltage is greater than or equal to the preset charging cut-off voltage, determining that the battery enters a constant-voltage charging stage.

acquiring the current charging current of the battery; and determining whether the battery enters a constant-voltage charging stage or not according to the current charging current voltage.

In some embodiments, said processor implementing said determining whether said battery enters a constant voltage charging phase based on said current charging current voltage comprises:

acquiring a preset charging cut-off current, wherein the preset charging cut-off current is used for representing that the battery enters a constant voltage charging stage from a constant current charging stage; and determining whether the battery enters a constant voltage charging stage or not according to the current charging current and the preset charging cut-off current.

In some embodiments, the determining whether the battery enters a constant voltage charging phase according to the present charging current and the preset charging cutoff current includes:

and if the difference value between the preset charging cut-off current and the current charging current is smaller than a preset current threshold value, determining that the battery enters a constant voltage charging stage.

and if the current charging current is smaller than the preset charging cut-off current, determining that the battery enters a constant-voltage charging stage.

monitoring a charging current of the battery; determining a trend of change in a charging current of the battery; and if the variation trend is changed from a steady trend to a descending trend, determining that the battery enters a constant-voltage charging stage.

In some embodiments, the preset duration is inversely related to the charging rate of the charger.

In some embodiments, the preset cutoff current is positively correlated with a charging rate of the charger.

In some embodiments, the processor further implements: and if the battery enters the constant voltage charging stage, prompting that the battery enters the constant voltage charging stage.

In some embodiments, the processor further implements:

recording charging information of the battery; wherein the charging information includes at least one of: the charging method comprises the steps of constant current charging time, charging current corresponding to the constant current charging time, constant voltage charging time and charging current corresponding to the constant voltage charging time.

In some embodiments, the processor further implements:

sending charging indication information to the battery, wherein the charging indication information comprises a residual capacity threshold value; and the battery stores the charging indication information after receiving the charging indication information, and stops discharging when the residual electric quantity reaches the residual electric quantity threshold value when the battery supplies power.

In some embodiments, the processor further implements:

acquiring the residual capacity of the battery; and if the residual capacity of the battery is greater than or equal to the residual capacity threshold value, determining that the charger uses a quick charging mode.

The battery is charged at the charger, the battery including a reserve capacity. Illustratively, the processor is configured to run a computer program stored in the memory and to implement the following steps when executing the computer program:

determining whether the battery includes the reserved capacity; if the battery comprises the reserved capacity, performing constant current charging on the battery;

determining whether the battery includes a reserved capacity;

after the constant current charging of the battery is finished, charging the battery by adopting a preset charging strategy;

In some embodiments, the processor further implements:

determining whether a battery is accessed; if the battery is determined to be accessed, executing the step of determining whether the battery comprises the reserved capacity; or,

trickle charging the battery before constant current charging the battery.

In some embodiments, the processor further implements:

if the user does not select the quick charging mode, controlling the charger to charge the battery by using a slow charging mode; the slow charging mode at least comprises a constant current charging stage and a constant voltage charging stage, and the battery is charged in the constant voltage charging stage without adopting the preset charging strategy.

In some embodiments, the processor implements:

and setting the quick charging mode as a default charging mode of the charger.

In some embodiments, the processor implements: acquiring charging parameters and/or battery parameters when the battery is subjected to constant current charging, and determining whether to finish the constant current charging according to the charging parameters and/or the battery parameters;

and if the constant current charging of the battery is finished, charging the battery by adopting a preset charging strategy.

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

In some embodiments, the processor further implements:

carrying out constant current charging on the battery; acquiring charging parameters and/or battery parameters when the battery is subjected to constant current charging, and determining whether the battery finishes the constant current charging according to the charging parameters and/or the battery parameters; if the battery finishes the constant current charging, a preset charging strategy is adopted to charge the battery;

In some embodiments, the processor further implements:

determining whether a battery is accessed; if the battery is determined to be accessed, executing the step of performing constant current charging on the battery;

trickle charging the battery before constant current charging the battery.

In some embodiments, the processor further implements:

determining whether the charger uses a quick charging mode, wherein the quick charging mode adopts a preset charging strategy to charge the battery when the constant current charging is finished; and if the charger uses the quick charging mode, executing the step of carrying out constant current charging on the battery.

In some embodiments, the processor further implements:

if the user does not select the quick charging mode, controlling the charger to charge the battery by using a slow charging mode; the slow charging mode at least comprises a constant current charging stage, and the battery is not charged by adopting the preset charging strategy when the constant current charging stage is finished.

In some embodiments, the processor further implements:

and setting the quick charging mode as a default charging mode of the charger.

In some embodiments, the obtaining of the charging parameter and/or the battery parameter when the battery is subjected to the constant current charging, and determining whether the battery ends the constant current charging according to the charging parameter and/or the battery parameter further includes:

acquiring the current battery voltage of the battery; acquiring a preset charging cut-off voltage, wherein the preset charging cut-off voltage is used for representing that the battery enters a constant voltage charging stage from a constant current charging stage; and if the current battery voltage is greater than or equal to the preset charging cut-off voltage, determining that the battery finishes the constant current charging.

acquiring the current charging current of the battery; acquiring a preset charging cut-off current, wherein the preset charging cut-off current is used for representing that the battery enters a constant voltage charging stage from a constant current charging stage; and if the current charging current is smaller than the preset charging cut-off current, determining that the battery finishes the constant current charging.

monitoring a charging current of the battery; determining a trend of change in a charging current of the battery; and if the variation trend is changed from a steady trend to a descending trend, determining that the battery finishes the constant current charging.

In some embodiments, the processor further implements: and if the battery finishes the constant current charging, prompting the battery to finish the constant current charging stage.

In some embodiments, the processor further implements:

carrying out constant current charging on the battery; after the constant current charging of the battery is finished, charging the battery by adopting a preset charging strategy;

In an embodiment of the present application, a computer-readable storage medium is further provided, where a computer program is stored in the computer-readable storage medium, where the computer program includes program instructions, and the processor executes the program instructions to implement the steps of the charging control method provided in the foregoing embodiment.

The computer readable storage medium may be an internal storage unit of the charger according to any of the foregoing embodiments, such as a memory or an internal storage 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, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like provided on the charger.

While the invention has been described with reference to specific embodiments, the scope of the invention is not limited thereto, and those skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the invention. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A charge control method applied to a charger for charging a battery, the method comprising:

carrying out constant current charging on the battery;

2. The method of claim 1, wherein prior to the constant current charging the battery, the method further comprises:

determining whether a battery is accessed; if the battery is determined to be connected, performing constant current charging on the battery; or,

before the battery is subjected to constant current charging, the method further comprises the following steps: trickle charging the battery.

3. The method of claim 1, further comprising:

determining whether the charger uses a quick charging mode, wherein a constant voltage charging stage of the quick charging mode adopts a preset charging strategy to charge the battery;

and if the charger uses the quick charging mode, executing the step of carrying out constant current charging on the battery.

4. The method of claim 3, wherein the fast charge mode comprises a constant current charging phase; or the quick charging mode comprises a constant current charging stage and a constant voltage charging stage.

5. The method of claim 3, wherein determining whether the charger is to charge the battery using a fast charge mode comprises:

determining whether a user selects a fast charge mode;

and if the user selects the quick charging mode, controlling the charger to charge the battery by using the quick charging mode.

6. The method of claim 5, further comprising:

7. The method of claim 6, wherein the slow charge mode comprises a trickle charge phase, a constant current charge phase, and a constant voltage charge phase.

8. The method of claim 3, further comprising:

and setting the quick charging mode as a default charging mode of the charger.

9. The method according to any one of claims 1 to 8, wherein the obtaining of the charging parameter and/or the battery parameter when the battery is subjected to the constant current charging and the determining of whether the battery enters a constant voltage charging stage according to the charging parameter and/or the battery parameter comprises:

acquiring the current battery voltage of the battery;

and determining whether the battery enters a constant voltage charging stage or not according to the current battery voltage.

10. The method of claim 9, wherein said determining whether the battery enters a constant voltage charging phase based on the current battery voltage comprises:

acquiring a preset charging cut-off voltage, wherein the preset charging cut-off voltage is used for representing that the battery enters a constant voltage charging stage from a constant current charging stage;

and determining whether the battery enters a constant voltage charging stage or not according to the current battery voltage and the preset charging cut-off voltage.

11. The method of claim 10, wherein said determining whether said battery enters a constant voltage charging phase based on said current battery voltage and said preset charge cutoff voltage comprises:

12. The method of claim 10, wherein said determining whether said battery enters a constant voltage charging phase based on said current battery voltage and said preset charge cutoff voltage comprises:

13. The method according to any one of claims 1 to 8, wherein the obtaining of the charging parameter and/or the battery parameter when the battery is subjected to the constant current charging and the determining of whether the battery enters a constant voltage charging stage according to the charging parameter and/or the battery parameter comprises:

acquiring the current charging current of the battery;

and determining whether the battery enters a constant-voltage charging stage or not according to the current charging current voltage.

14. The method of claim 13, wherein said determining whether the battery enters a constant voltage charging phase based on the current charging current voltage comprises:

acquiring a preset charging cut-off current, wherein the preset charging cut-off current is used for representing that the battery enters a constant voltage charging stage from a constant current charging stage;

and determining whether the battery enters a constant voltage charging stage or not according to the current charging current and the preset charging cut-off current.

15. The method of claim 14, wherein said determining whether the battery enters a constant voltage charging phase based on the present charging current and the preset charging cutoff current comprises:

16. The method of claim 14, wherein said determining whether the battery enters a constant voltage charging phase based on the present charging current and the preset charging cutoff current comprises:

17. The method according to any one of claims 1 to 8, wherein the obtaining of the charging parameter and/or the battery parameter when the battery is subjected to the constant current charging and the determining of whether the battery enters a constant voltage charging stage according to the charging parameter and/or the battery parameter comprises:

acquiring the charging current of the battery;

determining the change trend of the charging current of the battery according to the charging current of the battery;

and if the variation trend is changed from a steady trend to a descending trend, determining that the battery enters a constant-voltage charging stage.

18. The method of claim 1,

the size of the preset time length is in a negative correlation relation with the charging rate of the charger; and/or the presence of a gas in the gas,

the preset cut-off current and the charging rate of the charger are in positive correlation.

19. The method of claim 1, wherein the battery is prompted to enter a constant voltage charging phase if the battery enters a constant voltage charging phase.

20. The method of claim 1, further comprising:

recording charging information of the battery;

wherein the charging information includes at least one of: the charging method comprises the steps of constant current charging time, charging current corresponding to the constant current charging time, constant voltage charging time and charging current corresponding to the constant voltage charging time.

21. The method of claim 1, further comprising:

sending charging indication information to the battery, wherein the charging indication information comprises a residual capacity threshold value;

and the battery stores the charging indication information after receiving the charging indication information, and stops discharging when the residual electric quantity reaches the residual electric quantity threshold value when the battery supplies power.

22. The method of claim 21, further comprising:

acquiring the residual capacity of the battery;

and if the residual capacity of the battery is greater than or equal to the residual capacity threshold value, determining that the charger uses a quick charging mode.

23. A charging control method is characterized by being applied to a charger, wherein the charger is used for charging a battery; the method comprises the following steps:

determining whether the battery includes a reserved capacity;

24. The method of claim 23, wherein prior to the constant current charging the battery, the method further comprises:

determining whether a battery is accessed; if the battery is determined to be accessed, determining whether the battery comprises reserved capacity; or,

before the constant current charging of the battery, the method further comprises: trickle charging the battery.

25. The method of claim 23, further comprising:

26. The method of claim 25, wherein the fast charge mode comprises a constant current charging phase; or the quick charging mode comprises a constant current charging stage and a constant voltage charging stage.

27. The method of claim 25, wherein determining whether the charger is to charge the battery using a fast charge mode comprises:

determining whether a user selects a fast charge mode;

28. The method of claim 27, further comprising:

29. The method of claim 28, wherein the slow charge mode comprises a trickle charge phase, a constant current charge phase, and a constant voltage charge phase.

30. The method of claim 25, further comprising:

and setting the quick charging mode as a default charging mode of the charger.

31. The method according to any one of claims 23 to 30, wherein the obtaining of the charging parameter and/or the battery parameter when the battery is subjected to the constant current charging and the determining of whether the battery enters the constant voltage charging stage according to the charging parameter and/or the battery parameter comprises:

acquiring the current battery voltage of the battery;

32. The method of claim 31, wherein said determining whether said battery enters a constant voltage charging phase based on said current battery voltage comprises:

33. The method of claim 32, wherein said determining whether said battery enters a constant voltage charging phase based on said current battery voltage and said preset charge cutoff voltage comprises:

34. The method of claim 32, wherein said determining whether said battery enters a constant voltage charging phase based on said current battery voltage and said preset charge cutoff voltage comprises:

35. The method according to any one of claims 23 to 30, wherein the obtaining of the charging parameter and/or the battery parameter when the battery is subjected to the constant current charging and the determining of whether the battery enters the constant voltage charging stage according to the charging parameter and/or the battery parameter comprises:

acquiring the current charging current of the battery;

36. The method of claim 35, wherein said determining whether said battery enters a constant voltage charging phase based on said current charging current voltage comprises:

37. The method of claim 36, wherein said determining whether said battery enters a constant voltage charging phase based on said present charging current and said preset charging cutoff current comprises:

if the difference value between the preset charging cut-off current and the current charging current is smaller than a preset current threshold value, determining that the battery enters a constant voltage charging stage; or,

38. The method of any one of claims 23 to 30, comprising:

acquiring charging parameters and/or battery parameters when the battery is subjected to constant current charging, and determining whether to finish the constant current charging according to the charging parameters and/or the battery parameters;

39. The method of claim 38, wherein the obtaining of the charging parameter and/or the battery parameter during the constant current charging of the battery and determining whether to end the constant current charging according to the charging parameter and/or the battery parameter comprises:

acquiring the charging current of the battery;

and if the change trend is changed from a steady trend to a descending trend, determining to finish the constant-current charging of the battery.

40. The method of claim 23, wherein the predetermined period of time is inversely related to the charging rate of the charger; and/or the preset cut-off current is in positive correlation with the charging rate of the charger.

41. The method of claim 23, further comprising: and if the battery enters the constant voltage charging stage, prompting that the battery enters the constant voltage charging stage.

42. The method of claim 23, further comprising:

recording charging information of the battery;

43. The method of claim 23, further comprising:

44. The method of claim 43, further comprising:

acquiring the residual capacity of the battery;

45. A charge control method applied to a charger for charging a battery, the method comprising:

carrying out constant current charging on the battery;

46. The method of claim 45, wherein prior to the constant current charging the battery, the method further comprises:

47. The method of claim 45, further comprising:

determining whether the charger uses a quick charging mode, wherein the quick charging mode adopts a preset charging strategy to charge the battery when the constant current charging is finished;

48. The method of claim 47, wherein the fast charge mode comprises a constant current charging phase; or the quick charging mode comprises a constant current charging stage and a constant voltage charging stage.

49. The method of claim 47, wherein said determining whether the charger is to charge the battery using a fast charge mode comprises:

determining whether a user selects a fast charge mode;

50. The method of claim 49, further comprising:

the slow charging mode at least comprises a constant current charging stage, and the battery is not charged by adopting the preset charging strategy when the constant current charging stage is finished.

51. The method of claim 50, wherein the slow charge mode comprises a trickle charge phase, a constant current charge phase, and a constant voltage charge phase.

52. The method of claim 47, further comprising:

and setting the quick charging mode as a default charging mode of the charger.

53. The method according to any one of claims 45 to 52, wherein the obtaining of the charging parameter and/or the battery parameter when the battery is subjected to the constant current charging and the determining whether the battery finishes the constant current charging according to the charging parameter and/or the battery parameter comprises:

acquiring the current battery voltage of the battery;

and if the current battery voltage is greater than or equal to the preset charging cut-off voltage, determining that the battery finishes the constant current charging.

54. The method according to any one of claims 45 to 52, wherein the obtaining of the charging parameter and/or the battery parameter when the battery is subjected to the constant current charging and the determining whether the battery finishes the constant current charging according to the charging parameter and/or the battery parameter comprises:

acquiring the current charging current of the battery;

and if the current charging current is smaller than the preset charging cut-off current, determining that the battery finishes the constant current charging.

55. The method according to any one of claims 45 to 52, wherein the obtaining of the charging parameter and/or the battery parameter when the battery is subjected to the constant current charging and the determining whether the battery finishes the constant current charging according to the charging parameter and/or the battery parameter comprises:

acquiring the charging current of the battery;

and if the variation trend is changed from a steady trend to a descending trend, determining that the battery finishes the constant current charging.

56. The method of claim 45, wherein the predetermined period of time is inversely related to the charging rate of the charger; and/or the preset cut-off current is in positive correlation with the charging rate of the charger.

57. The method of claim 45, wherein the battery is prompted to end the constant current charging if the battery ends the constant current charging.

58. The method of claim 45, further comprising:

recording charging information of the battery;

59. The method of claim 45, further comprising:

60. The method of claim 59, further comprising:

acquiring the residual capacity of the battery;

61. A charge control method applied to a charger for charging a battery, the method comprising:

charging the battery in a first preset charging mode;

62. A charger, characterized in that the charger comprises a processor, a memory and a charging circuit;

the memory is used for storing a computer program;

the processor is configured to execute the computer program and, when executing the computer program, to implement the steps of the charging control method according to any one of claims 1 to 22.

63. A charger, characterized in that the charger comprises a processor, a memory and a charging circuit;

the memory is used for storing a computer program;

the processor is configured to execute the computer program and, when executing the computer program, to implement the steps of the charging control method according to any one of claims 23 to 44.

64. A charger, characterized in that the charger comprises a processor, a memory and a charging circuit;

the memory is used for storing a computer program;

the processor is configured to execute the computer program and, when executing the computer program, to implement the steps of the charging control method according to any one of claims 45 to 60.

65. A charger, characterized in that the charger comprises a processor, a memory and a charging circuit;

the memory is used for storing a computer program;

the processor is configured to execute the computer program and, when executing the computer program, to carry out the steps of the charging control method according to claim 61.

66. A charging system comprising a charger according to any of claims 63 to 65 and a battery, the charger being arranged to charge the battery.

67. A computer-readable storage medium, characterized in that it stores a computer program which, when executed by a processor, causes the processor to carry out the steps of the charge control method according to any one of claims 1 to 22, or the steps of the charge control method according to any one of claims 23 to 44, or the steps of the charge control method according to any one of claims 45 to 60, or the steps of the charge control method according to claim 61.