CN114552710A - Automatic power-off method and device for intelligent charger, electronic equipment and medium - Google Patents

Automatic power-off method and device for intelligent charger, electronic equipment and medium Download PDF

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Publication number
CN114552710A
CN114552710A CN202210168850.7A CN202210168850A CN114552710A CN 114552710 A CN114552710 A CN 114552710A CN 202210168850 A CN202210168850 A CN 202210168850A CN 114552710 A CN114552710 A CN 114552710A
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CN
China
Prior art keywords
charger
information
socket
electric quantity
charged
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Granted
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CN202210168850.7A
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Chinese (zh)
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CN114552710B (en
Inventor
杨博圳
杨悦
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Shenzhen Pengshengye Electronics Co ltd
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Shenzhen Pengshengye Electronics Co ltd
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Priority to CN202210168850.7A priority Critical patent/CN114552710B/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H02J7/00036—Charger exchanging data with battery
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/70—Structural association with built-in electrical component with built-in switch
    • H01R13/713—Structural association with built-in electrical component with built-in switch the switch being a safety switch
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • H02J7/0045—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction concerning the insertion or the connection of the batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The present application relates to the field of chargers, and in particular, to an intelligent charger auto-power-off method, an intelligent charger auto-power-off device, an electronic apparatus, and a medium. The method comprises the following steps: judging whether the charger is connected with the socket or not, and if so, generating first connection information; after the first connection information is generated, whether the charger is connected with the equipment to be charged or not is judged; if not, generating second disconnection information; and controlling a protection switch to be disconnected according to the first connection information and the second disconnection information, wherein the protection switch is arranged at the connection position of the charger and the socket. This application has the effect that improves charger safety in utilization.

Description

Automatic power-off method and device for intelligent charger, electronic equipment and medium
Technical Field
The present disclosure relates to the field of chargers, and in particular, to an automatic power-off method and apparatus for an intelligent charger, an electronic device, and a medium.
Background
A charger is widely used in daily life as a device for charging a battery, such as a charger for electronic products and a charger for electric vehicles.
However, there is a certain safety risk in using the charger, for example, when a user charges a mobile phone for a long time or the charger is left idle for a long time without being removed from a socket, the charger may be damaged or even explode.
However, when the charger is plugged into the socket and the charger is not used, current still flows through a circuit in the charger, so that the aging of electronic devices in the charger is accelerated, and when the aging of the devices in the charger is serious, a short circuit may occur to cause a fault or even an explosion, and potential safety hazards still exist.
Disclosure of Invention
In order to improve the use safety of the charger, the application provides an automatic power-off method and device of the intelligent charger, electronic equipment and a medium.
In a first aspect, the present application provides an automatic power-off method for an intelligent charger, which adopts the following technical scheme:
an automatic power-off method of an intelligent charger comprises the following steps:
judging whether the charger is connected with the socket or not, and if so, generating first connection information;
after first connection information is generated, whether the charger is connected with the equipment to be charged or not is judged;
if not, generating second disconnection information;
and controlling a protection switch to be disconnected according to the first connection information and the second disconnection information, wherein the protection switch is arranged at the connection position of the charger and the socket.
By adopting the technical scheme, after the charger is judged to be connected with the socket, whether the charger is connected with the equipment to be charged is judged, if the charger is connected with the socket but not connected with the equipment to be charged, the charger is in a power-on but non-working state, so that the protection switch is controlled to be disconnected after the first connection information and the second disconnection information are received, on one hand, the invalid power-on time of the charger is reduced, and the electronic device in the charger is powered off when the charger is not charged, so that the safety of using the charger is improved; on the other hand, when the charger is pulled out after the equipment to be charged is pulled out, the protection switch is switched off, the charger is powered off, the probability of electric sparks generated when the charger is pulled out is reduced, and the safety of the intelligent charger is improved.
In an implementation manner, the determining whether the charger is connected to the outlet, and if so, generating first connection information includes:
acquiring current information between the charger and a socket, and if the current information is greater than a preset current threshold, generating first connection information representing the connection between the charger and the socket;
or the like, or, alternatively,
acquiring first pressure information representing the pressure between the charger and the socket, and if the first pressure information is larger than a preset pressure threshold value, generating first connection information representing the connection between the charger and the socket.
By adopting the technical scheme, the current information between the charger and the socket is obtained, when the charger is inserted into the socket, the current in the socket is detected, and when the charger is not inserted into the socket, the current information is zero, so that when the current information is greater than a preset current threshold value, the connection between the charger and the socket is represented; the charger generates pressure when being inserted into the socket, and no pressure exists when the charger is not inserted into the socket, so that when the first pressure information is greater than a preset pressure threshold value, the charger is represented to be inserted into the socket, whether the charger is connected with the socket or not is judged according to the two modes, and the applicability of the intelligent charger is improved.
In an implementable manner, said controlling the protection switch to open based on said first connection information and said second disconnection information comprises:
after the first connection information is generated, acquiring charging duration information;
if the charging duration information is greater than or equal to the preset time threshold information, judging whether second disconnection information is generated or not;
and if so, controlling the protection switch to be switched off.
By adopting the technical scheme, when the charger is just inserted into the socket, the time for the charger to be inserted into the socket, namely the charging duration information, is counted; the protection switch is controlled to be switched off after the charging time length information is larger than or equal to the preset time threshold value, so that the action times of the protection switch are reduced in a short period of time after the charger is inserted into the socket and when the charger is connected into the equipment to be charged, the aging speed of the protection switch is reduced, and the use safety of the charger is improved.
In an implementation manner, the determining whether the charger is connected to the outlet, and if so, generating first connection information, and then further includes:
and starting a buffer device at the moment of generating the first connection information, wherein the buffer device is used for controlling the charger to be in delayed conduction with the socket.
By adopting the technical scheme, the buffer device is started at the moment when the charger is connected with the socket, namely the moment when the first connection information is generated, so that the charger is conducted with the socket in a delayed manner, and the phenomenon that the charger is ignited due to poor contact is reduced at the moment when the charger is connected with the socket.
In an implementation manner, after generating the first connection information, determining whether the charger is connected to the device to be charged, further includes:
if the standby battery is connected with the power supply, the standby charging switch is controlled to be closed, and the standby charging switch is a normally open switch and is arranged between the standby battery and the power supply.
By adopting the technical scheme, after the charger is connected with the socket and also connected with the equipment to be charged, the standby charging switch is controlled to be closed, so that the standby battery is powered on to start charging the standby battery, and the electronic devices required in the charger can be powered on when the charger is not powered on, thereby improving the self-adaptability of the intelligent charger.
In one implementation, if the charger is connected to the device to be charged and the socket, the charging switch is controlled to be closed, including:
if the charger is connected with the equipment to be charged and the socket, first electric quantity information representing the electric quantity of a battery of the equipment to be charged is obtained;
judging whether the first electric quantity information is larger than or equal to a preset electric quantity threshold value or not,
and if so, controlling the standby charging switch to be closed.
By adopting the technical scheme, the standby battery is charged when the electric quantity of the battery of the equipment to be charged reaches the preset electric quantity threshold value, so that the charging efficiency loss when the equipment to be charged is reduced.
In one implementation, when the first charge information is greater than a preset charge threshold, controlling the backup charge switch to close includes:
acquiring second electric quantity information representing the electric quantity of the standby battery;
determining an electric quantity threshold value according to the second electric quantity information;
and when the first electric quantity information is larger than or equal to the electric quantity threshold value, controlling the standby charging switch to be closed.
By adopting the technical scheme, the electric quantity of the standby battery is acquired, the electric quantity of the standby battery is judged, the electric quantity threshold value is adjusted according to the electric quantity of the standby battery, and different charging opportunities are selected as required so as to improve the cruising ability and adaptability of the standby battery.
In a second aspect, the present application provides an automatic power-off device for an intelligent charger, which adopts the following technical scheme:
an intelligent charger auto-power-off device comprising:
the first judgment module is used for judging whether the charger is connected with the socket or not, and if so, generating first connection information;
the second judgment module is used for judging whether the charger is connected with the equipment to be charged or not after the first connection information is generated;
if not, generating second disconnection information;
and the control module controls a protection switch to be disconnected according to the first connection information and the second disconnection information, and the protection switch is arranged at the connection position of the charger and the socket.
By adopting the technical scheme, after the first judgment module judges that the charger is connected with the socket, the second judgment module judges that the charger is not connected with the equipment to be charged, the charger is in an electrified but not working state at the moment, and the control module controls the protection switch to be disconnected at the moment to disconnect the power supply of the charger, so that the safety of the charger when the charger is not used is reduced, and the explosion probability of the charger is reduced.
In a possible implementation manner, the first determining module is specifically configured to, when the first determining module is configured to disconnect whether the charger is connected to the outlet, and if the charger is connected to the outlet, generate first connection information:
acquiring current information between the charger and a socket, and if the current information is greater than a preset current threshold, generating first connection information representing the connection between the charger and the socket;
or the like, or, alternatively,
acquiring first pressure information representing the pressure between the charger and the socket, and if the first pressure information is larger than a preset pressure threshold value, generating first connection information representing the connection between the charger and the socket.
In a possible implementation manner, when the control module is configured to control the protection switch to be turned off according to the first connection information and the second disconnection information, the control module is specifically configured to:
after the first connection information is generated, acquiring charging duration information;
if the charging time length information is larger than or equal to the preset time threshold value information, judging whether second disconnection information is generated or not,
and if so, controlling the protection switch to be switched off.
In one possible implementation manner, the intelligent charger automatic power-off device further includes:
and the buffer module is used for starting a buffer device at the moment of generating the first connection information, and the buffer device is used for controlling the charger to be in delayed conduction with the socket.
In one possible implementation manner, the intelligent charger automatic power-off device further includes:
the standby charging module is used for controlling the standby charging switch to be closed if the standby charging module is connected with the power supply, and the standby charging switch is a normally open switch and is arranged between the standby battery and the power supply.
In a possible implementation manner, the standby charging module, when configured to control the charging switch to be closed if the charger is connected to the device to be charged and the socket, is specifically configured to:
if the charger is connected with the equipment to be charged and the socket, first electric quantity information representing the electric quantity of a battery of the equipment to be charged is obtained;
and judging whether the first electric quantity information is larger than a preset electric quantity threshold value, if so, controlling the standby charging switch to be closed.
In a possible implementation manner, when the standby charging module is configured to control the standby charging switch to be turned off when the first electric quantity information is greater than the preset electric quantity threshold, the standby charging module is specifically configured to:
and acquiring second electric quantity information representing the electric quantity of the standby battery.
And determining an electric quantity threshold value according to the second electric quantity information.
And when the first electric quantity information is larger than or equal to the electric quantity threshold value, controlling the standby charging switch to be closed.
In a third aspect, the present application provides an electronic device, which adopts the following technical solutions:
an electronic device, comprising:
at least one processor;
a memory;
at least one application, wherein the at least one application is stored in the memory and configured to be executed by the at least one processor, the at least one application configured to: the above method is performed.
In a fourth aspect, the present application provides a computer-readable storage medium, which adopts the following technical solutions:
a computer-readable storage medium, comprising: a computer program is stored which can be loaded by a processor and which performs the above-mentioned method.
To sum up, the application comprises the following beneficial technical effects:
after the charger is judged to be connected with the socket, whether the charger is connected with the equipment to be charged is judged, if the charger is connected with the socket but not connected with the equipment to be charged, the charger is in an electrified but non-working state, and therefore after the first connection information and the second disconnection information are received, the protection switch is controlled to be disconnected, on one hand, the invalid electrifying time of the charger is reduced, and electronic devices in the charger are powered off when the charger is not charged, so that the safety of using the charger is improved; on the other hand, when the charger is pulled out after the equipment to be charged is pulled out, the protection switch is switched off, the charger is powered off, the probability of electric sparks generated when the charger is pulled out is reduced, and the safety of the intelligent charger is improved.
Drawings
Fig. 1 is a schematic flowchart of an automatic power-off method of an intelligent charger according to an embodiment of the present application;
FIG. 2 is a schematic diagram of an arrangement of a first pressure sensor for generating first detection information according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a second pressure sensor for generating second detection information according to an embodiment of the present application;
FIG. 4 is a diagram of a protection switch according to an embodiment of the present application;
FIG. 5 is a circuit diagram of a buffer apparatus according to an embodiment of the present application;
FIG. 6 is a block diagram of an automatic power-off device of a smart charger according to an embodiment of the present application;
fig. 7 is a schematic diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The present application is described in further detail below with reference to figures 1-7.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
When an electric vehicle or an electronic product is charged, a charger is not separated; during charging, a plug of the charger is inserted into the socket, in the inserting process, municipal alternating current flows out from the socket and flows to the plug of the charger, the charger rectifies the municipal alternating current into direct current by adopting a rectifying unit or a rectifying module and the like, and the direct current of 24V (electric vehicle charger) or 5V (electronic product charger) is formed by voltage reduction and voltage stabilization and is output to equipment to be charged, so that the equipment to be charged is charged.
In the practical application process, a mobile phone charger is taken as an example for explanation, after the charger is inserted into a socket, current flows through the charger, if the charger is not connected with a device to be charged, namely a mobile phone, at the moment, the charger is still in a working state, internal electronic devices may reduce the service life of the electronic devices due to heating, the aging speed of the charger is accelerated, and serious potential safety hazard events can be caused when the charger is serious. In addition, when a user pulls out a charger which is not connected with a mobile phone, current flows on an electronic device in the charger, and the current is easy to leak in the pulling-out process, so that a current leakage event is caused.
Therefore in this application, an intelligent charger is disclosed, and at the inside control unit that is provided with of intelligent charger, control unit can adopt the PLC controller can adopt controllers such as singlechip.
The embodiment of the application provides an automatic power-off method of an intelligent charger, which is executed by the intelligent charger and comprises the following steps:
step S101, judging whether the charger is connected with the socket or not, and if so, generating first connection information.
Specifically, the charger often includes a charger head and a data line, wherein one end of the charger head is connected with one end of the data line, and the other end of the charger head is a two-pin or three-pin plug for connecting with a jack of a socket; the other end of the data line is an interface, such as a type-c interface, for connecting with a device to be charged (a mobile phone).
The connection relation between the charger and the socket comprises a connection relation and an unconnected relation, and the connection relation between the charger and the equipment to be charged comprises a connection relation and an unconnected relation.
The charger is when inserting the socket, inside inserting the plug to the socket, when the plug inserts to the socket in, the intelligent charging ware detects the charger and links together with the socket, links together the back, and the intelligent charging ware generates first connection information, and the sign charger is connected with the socket.
Step S102, after the first connection information is generated, whether the charger is connected with the equipment to be charged is judged; and if the connection is not made, generating second disconnection information.
Specifically, after the first connection information is generated, that is, after the charger is inserted into the socket, whether the charger is connected with the device to be charged is determined, when the charger is connected with the device to be charged, a user often inserts the interface end of the charger into the device to be charged, and the intelligent charger determines whether the charger is connected with the device to be charged by detecting changes before and after the charger is inserted into the device to be charged.
In an implementation manner, the manner of determining whether the charger is connected to the device to be charged may be: the acquisition is performed by a second pressure sensor arranged at the interface end of the charger.
Specifically, a second pressure sensor is arranged at an interface end of the charger and used for detecting the extrusion degree of the charger and the mobile phone and outputting second pressure information. As shown in fig. 2, the interface end of the charger includes a horizontal metal interface, a plane perpendicular to the metal interface is formed at a connection position of the metal interface and the data line, the second pressure sensor is arranged on the plane, when the interface is inserted into the device to be charged, the second pressure sensor is squeezed to detect pressure, second connection information representing that the charger is connected with the socket is output, when the charger is not connected with the device to be charged, the pressure detected by the second pressure sensor is approximately zero, and second disconnection information representing that the charger is connected with the device to be charged is output. Fig. 2 is an arrangement of a second pressure sensor, which is not limited in the embodiment of the present application.
Further, after the charger is connected with the socket, if the charger is judged to be not connected with the device to be charged, the current charger is represented to be in an idle state, namely, in a state of being electrified but not used.
And S103, controlling the disconnection of a protection switch according to the first connection information and the second disconnection information, wherein the protection switch is arranged at the connection position of the charger and the socket.
Specifically, when the charger is in a power-on but unused state, the charger is disconnected from the power supply by the protection switch to improve the safety of using the charger.
Referring to fig. 3, the charger includes a first power input terminal VIN1 and a second power input terminal VIN2 for receiving municipal ac power; the charger also comprises a power supply output positive end and a power supply output negative end which are respectively used for being connected with the equipment to be charged and supplying power to the equipment to be charged; the charger further comprises a rectification filtering module, a voltage reduction module and a voltage stabilizing module, wherein the rectification filtering module is connected with the first power supply input end and the second power supply input end and used for receiving municipal alternating current and outputting the rectified municipal alternating current as direct current, the direct current is reduced in voltage through the voltage reduction module after being output as the direct current, and the voltage is stabilized at 5V through the voltage stabilizing module and then is output through the power supply output positive end and the power supply output negative end.
The protection switch can set up between rectification filter module and first power input end, be connected with the socket at the charger, but when not connecting the battery charging outfit, with the protection switch disconnection, so that all module disconnection and the connection of power of charger, also can set up between rectification filter module and step-down module, in order to make step-down module and voltage stabilizing module not circular telegram when the protection switch disconnection, the step-down module adopts the transformer more, the transformer can slightly generate heat at the operation in-process, if work for a long time then can make the probability increase that the transformer damaged, consequently before setting up the protection switch at the step-down module, can effectively improve the security that the charger used.
In addition, if the charger is connected with the socket and simultaneously connected with the equipment to be charged, the charger is in a normal working state at the moment; when the charger is not connected with the socket but connected with the equipment to be charged, the charger is in a state of not being connected with a power supply; when the charger is not connected with the socket and the equipment to be charged, the charger does not work and is not connected with the power supply; in all three cases, the first switch remains closed.
The embodiment of the application provides an automatic power-off method of an intelligent charger, whether the charger is connected with a socket is judged by judging whether the charger is connected with a device to be charged, the state of the charger is determined, the charger is only connected with the socket but not connected with the device to be charged, the state that the charger is only electrified but does not work at the moment is represented, the protection switch inside the charger is disconnected at the moment, the electronic device inside the charger has no current circulation when the charger is idle, the probability that the service life of the charger is influenced under the condition that the charger is electrified for a long time is reduced, meanwhile, the probability of explosion is caused when the charger is idle but electrified due to short circuit is reduced, and the use safety of the charger is further improved.
In a possible implementation manner of this embodiment of the present application, in step S101, it is determined whether a charger is connected to a socket, and if so, first connection information is generated, including:
acquiring current information between the charger and the socket, and if the current information is greater than a preset current threshold, generating first connection information representing the connection between the charger and the socket;
or the like, or, alternatively,
first pressure information representing the pressure between the charger and the socket is obtained, and if the first pressure information is larger than a preset pressure threshold value, first connection information representing the connection between the charger and the socket is generated.
Specifically, in an implementable manner, a first pressure sensor is disposed at a plug end of the charger, the first pressure sensor is configured to detect a squeezing condition between the charger and the socket, and output first pressure information representing squeezing between the charger and the socket, as shown in fig. 4, fig. 4 is an arrangement manner of the first pressure sensor, the first pressure sensor is disposed on a plane perpendicular to the plug between the two-pin plug, and protrudes out of the plane, the first pressure sensor may also be disposed at another position other than a middle position between the two plugs, which is not limited in the embodiment of the present application, but is described as an implementable manner; when the charger is inserted into the jacks, the first pressure sensor is squeezed by the planes between the jacks to generate first pressure information representing the connection between the charger and the socket; when the charger is not plugged into the jack, the pressure detected by the first pressure sensor is approximately zero, and the output first pressure information is information representing that the charger is not connected with the socket.
When the first pressure information is larger than a preset pressure threshold value, the charger is judged to be connected with the socket, namely, the first connection information is generated.
And when the first pressure information is smaller than or equal to a preset pressure threshold value, judging that the charger is not connected with the socket, and generating first disconnection information.
In another implementation, the first detection information may be obtained by a current sensor that obtains a current of the charger plug.
Specifically, the first current sensor is used for detecting current on a charger plug and generating current information, when the charger is connected with a socket, the plug on the charger contacts a power supply, and the current flowing through the charger is captured by the current sensor to generate the current information; when the charger is not connected with the socket, the current detected by the current sensor is zero, and current information with a zero value is generated;
therefore, when the first current sensor detects that current exists, the charger is judged to be connected with the socket, namely when the current information is greater than a current threshold value, the charger is represented to be connected with the socket, and first connection information is generated; when the first current information detected by the current sensor is smaller than or equal to a preset current threshold value, the charger is judged to be disconnected with the socket, and first disconnection information is generated.
Whether the charger is connected with the socket or not is detected through two modes, so that the application of the intelligent charger is more flexible.
In a possible implementation manner of the embodiment of the present application, in step S103, controlling the protection switch to be turned off according to the first connection information and the second disconnection information includes:
after the first connection information is generated, acquiring charging duration information;
if the charging time length information is larger than or equal to the preset time threshold information, judging whether second disconnection information is generated or not,
and if so, controlling the protection switch to be switched off.
Specifically, the first connection information is generated, which indicates that the current charger is powered on.
The charging duration information is the time from the moment when the charger is connected with the socket; the preset time threshold is preset time, and the protection switch is in a closed state within the time that the charging time length information is smaller than the preset time threshold. If the charging duration information does not reach the preset time threshold value, and if the user connects the charger with the device to be charged at the moment, after the charging duration information is greater than the preset time threshold value, it is judged that the second disconnection information is generated at the moment, and therefore the protection switch is controlled to be still in a closed state. If the charger is not connected to the device to be charged all the time after the charging duration information reaches the preset time threshold, the protection switch is disconnected, the times of opening and closing the protection switch are reduced, and the service life of the charger is prolonged.
For example, the following steps are carried out: when the mobile phone is not connected with the charger, the charger is not connected with the power socket, the protection switch is closed at the moment, and no current flows in the charger; after the charger is plugged into a power socket, the protection switch keeps a closed state within 5 seconds of a preset time threshold, and current flows in the charger at the moment; if the charger is plugged into the socket for 3 seconds, the mobile phone is connected with the charger, and after 5 seconds, the protection switch is still closed to charge the mobile phone, and the switching frequency of the protection switch is zero; if the time delay does not exist, when a user just plugs the charger into the socket but does not connect the equipment to be charged, the protection switch is disconnected, if the protection switch is subjected to action once again and is changed from closed to open, the equipment to be charged is connected with the charger after a few seconds, the equipment to be charged is subjected to action once again and is switched on from open, and the number of times of switching is two.
The comparison shows that the switching times of the protection switch are reduced, and the probability of damage to the battery caused by frequent switching power supply when the mobile phone is charged is also reduced.
In step S101, it is determined whether a charger is connected to a socket, and if so, first connection information is generated, and then the method further includes:
and starting a buffer device at the moment of generating the first connection information, wherein the buffer device is used for controlling the charger to be in delayed conduction with the socket.
Specifically, when the charger is not connected with the socket, the internal protection switch of the charger is in a closed state at the moment; if a user inserts the charger into the socket at this time, the protection switch is still in a closed state at the moment when the charger is inserted into the socket, and if an ignition phenomenon is caused due to poor contact or large current connected at the moment of insertion in the charger insertion process, the service life of electronic devices inside the charger is influenced, and the use safety of the charger is reduced. Therefore, the buffering device is arranged in the intelligent charger, and when the intelligent charger detects that the charger is plugged into a socket, the buffering device is started to enable the charger to be conducted with a power supply in a delayed mode.
In an implementation manner, the buffering device is disposed between the rectifying and filtering module and the voltage reducing module inside the charger, and referring to fig. 5, the buffering device includes: the circuit comprises a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a first capacitor C1, an NPN triode Q1 and a PMOS tube Q2.
One end of the first resistor R1 is connected with the positive output end V + of the rectifying and filtering module and receives the direct current output by the rectifying and filtering module, the other end of the first resistor R1 is connected with one end of the second resistor R2, and the other end of the second resistor R2 is grounded; the ungrounded end of the second resistor R2 is connected with the base of the NPN triode Q1, the emitter of the NPN triode Q1 is grounded, the collector of the NPN triode Q1 is connected with one end of the third resistor R3, the other end of the third resistor R3 is connected with the grid of the PMOS tube Q2, the source of the PMOS tube Q2 is connected with the positive input end of the voltage reduction module, the drain of the PMOS tube Q2 is connected with the positive output end V + of the rectification filter module, and the direct current output by the rectification filter module is received; one end of a fourth resistor R4 is connected with the grid electrode of the PMOS tube Q2, the other end of the fourth resistor R4 is connected with the source electrode of the PMOS tube Q2, and a first capacitor C1 is connected with a fourth resistor R4 in parallel; one end of the fifth resistor R5 is connected to the positive output terminal V + of the rectifying and filtering module, the other end is connected to one end of the sixth resistor R6, and the other end of the sixth resistor R6 is connected to the source of the PMOS transistor Q2.
At the moment when the charger is connected with the socket, the positive output end of the rectifying and filtering module outputs direct current, the NPN type triode is conducted, after the NPN type triode is conducted, the power supply firstly charges the first capacitor C1, after the charging is completed, the potential of the source electrode of the PMOS tube is pulled high, meanwhile, the PMOS tube is conducted, power supply to a subsequent power supply is started, the effect of delaying conduction is achieved, and the probability of spark generation is reduced.
In step S102, after generating the first connection information, determining whether the charger is connected to the device to be charged, and then further including:
if the standby battery is connected with the power supply, the standby charging switch is controlled to be closed, and the standby charging switch is a normally open switch and is arranged between the standby battery and the power supply.
Specifically, a backup battery is provided inside the charger so that, after the charger is disconnected from the power supply, an operation of determining whether the charger is connected to the outlet can be performed. And a standby charging switch is arranged between the standby battery and the power supply and used for controlling the on-off of the standby battery and the power supply, and when the standby charging switch is closed, the standby battery starts to charge.
After first connection information is generated, representing that the charger is connected with the socket; if the charger is connected with the equipment to be charged at the moment, the representation of the connection of the charger and the socket is connected with the equipment to be charged at the same time, so that the standby charging switch is closed after the equipment to be charged is charged, and the power supply starts to charge the standby battery, so that the standby battery has sufficient electric quantity.
In a possible implementation manner of the embodiment of the application, if the charger is connected to the device to be charged and the socket, the charging switch is controlled to be closed, including:
step Sa1 (not shown), if the charger is connected to the device to be charged and the socket, obtaining first power information representing the battery power of the device to be charged;
specifically, the first electric quantity information is the electric quantity information of the equipment to be charged, the output end of the mobile phone charger is connected with the battery in the equipment to be charged, a battery sampling unit is arranged in the mobile phone charger and comprises a sampling resistor and a diode, one end of the sampling resistor is grounded, the other end of the sampling resistor is connected with the anode of the diode, the cathode of the diode is connected with the positive polarity terminal of the battery in the equipment to be charged, the voltage on the positive polarity terminal of the battery is collected through the sampling resistor, and the electric quantity of the battery in the equipment to be charged can be calculated according to the voltage.
When the mobile phone battery is discharged (namely the electric quantity of the mobile phone battery is zero), the voltage acquired by the sampling resistor is about 3.6V, when the mobile phone battery is fully charged (namely the electric quantity of the mobile phone battery reaches 100%), the acquired voltage is about 4.2V, and in the charging process of the mobile phone battery, along with the increasing electric quantity charged by the battery, the voltage acquired by the sampling resistor is higher and higher until reaching 4.2V. Therefore, the actual electric quantity of the battery can be calculated according to the corresponding relation between the voltage and the electric quantity, and electric quantity information can be obtained, for example: the difference between 3.6V and 4.2V is 0.6V, and 0.6V is divided into 10 equal parts, each part is 0.06V; that is, when the battery voltage is detected to be 3.72V, the battery charge is 20%.
Step Sa2 (not shown), determining whether the first power information is greater than or equal to a preset power threshold,
if yes, the standby charging switch is controlled to be closed.
Specifically, the preset electric quantity threshold is preset, in the embodiment of the application, the electric quantity threshold is preset to 90%, and when the electric quantity of the device to be charged reaches 90%, the standby charging switch is controlled to be closed, and the standby battery is charged; to prevent the problem that the charging efficiency of a device to be charged is low when the charging of the device to be charged is started to charge a backup battery.
It should be noted that the first electric quantity information may also be voltage information directly sampled by the sampling resistor, and the preset electric quantity threshold may be a corresponding voltage threshold, and may be determined directly by the voltage information and the voltage threshold, or may be an implementation manner for controlling the standby charging switch to be turned on.
And if the current value is not greater than the preset electric quantity threshold value, the standby switch is kept off, and the standby battery is not charged.
Meanwhile, if the charger is used for charging the mobile phone, the standby charging switch is disconnected at the moment if the charger is pulled out of the socket at the moment, and the standby battery is not charged any more.
Further, in the process that the charger charges the mobile phone, the standby charging switch is controlled to be closed at the moment, after the standby charging switch is closed, the intelligent charger obtains second electric quantity information representing the electric quantity of the standby battery, and if the second electric quantity information is larger than or equal to a preset standby electric quantity threshold value, the standby charging switch is controlled to be disconnected.
The standby power threshold is a preset power value which is set to be 100% in the embodiment of the application, when the power of the standby battery reaches 100%, the standby charging switch is controlled to be switched off, and when the standby battery is fully charged, the standby battery is not charged.
In a possible implementation manner of this embodiment of the application, in step Sa2, when the first electric quantity information is greater than the preset electric quantity threshold, controlling the standby charging switch to be closed includes:
step Sb1 (not shown), second power information indicative of the power of the backup battery is acquired.
Step Sb2 (not shown in the figure) determines the power threshold value according to the second power information.
Step Sb3 (not shown) controls the backup charging switch to close when the first power information is equal to or greater than the power threshold value.
Specifically, the second electric quantity information is the electric quantity information of the standby battery, a battery sampling unit is also arranged at the output end of the standby battery and is connected with the output end of the standby battery arranged in the charger, the output voltage of the standby battery is collected and converted into the electric quantity of the battery to output the second electric quantity information, and the second electric quantity information is acquired by the main control unit.
The electric quantity of the backup battery is divided into various electric quantity grades according to the electric quantity percentage, for example, every 50% of the electric quantity grades are divided into one grade, namely 0% -50% is a first electric quantity grade, and 50% -100% is a second electric quantity grade.
The electric quantity threshold of the intelligent charger comprises a plurality of electric quantity thresholds, each electric quantity threshold corresponds to each electric quantity grade one by one, for example, the electric quantity thresholds comprise a first electric quantity threshold and a second electric quantity threshold, the first electric quantity threshold is 80%, and the first electric quantity threshold corresponds to the first electric quantity grade; the second electrical quantity threshold is 90% corresponding to a second electrical quantity level.
The charging time of the standby battery is determined according to the internal storage electric quantity of the standby battery, and when the electric quantity of the standby battery is low, the more sufficient charging time can be selected to improve the cruising ability of the standby battery.
The implementation manner of determining the electric quantity threshold according to the second electric quantity information is as follows:
determining an electric quantity grade corresponding to the second electric quantity information according to the second electric quantity information;
and determining a corresponding electric quantity threshold according to the electric quantity grade.
As explained in the above example, if the measured second power information is 70%, that is, the stored power of the backup battery is 70%, at this time, the power of the backup battery corresponds to the second power level, and therefore, the power threshold is the second power threshold, that is, 90%, the backup charging switch is controlled to be closed only when the power of the device to be charged reaches 90%. If the electric quantity of the standby battery is 20%, the time for charging the standby battery is longer, and the corresponding electric quantity threshold value is 80%, so that the equipment to be charged is charged when the electric quantity of the equipment to be charged reaches 80%, the charging time of the standby battery is adaptively adjusted according to the grade of the standby battery, and the applicability of the intelligent charger is improved.
The above embodiment introduces a method for automatically powering off an intelligent charger from the perspective of a method flow, and the following embodiment introduces a device for automatically powering off an intelligent charger from the perspective of a virtual module or a virtual unit, which is described in detail in the following embodiment.
Intelligent charger auto-power-off device 100 includes:
a first determining module 1001, configured to determine whether a charger is connected to a socket, and if so, generate first connection information;
a second determining module 1002, configured to determine whether the charger is connected to the device to be charged after the first connection information is generated; if not, generating second disconnection information;
and the control module 1003 controls the protection switch to be disconnected according to the first connection information and the second disconnection information, wherein the protection switch is arranged at the connection position of the charger and the socket.
By adopting the technical scheme, after the first judgment module judges that the charger is connected with the socket, the second judgment module judges that the charger is not connected with the equipment to be charged, the charger is in an electrified but not working state at the moment, and the control module controls the protection switch to be disconnected at the moment to disconnect the power supply of the charger, so that the safety of the charger when the charger is not used is reduced, and the explosion probability of the charger is reduced.
In a possible implementation manner of the embodiment of the present application, the first determining module 1001 is specifically configured to, when the first determining module is used to disconnect whether the charger is connected to the socket, and if so, generate the first connection information:
acquiring current information between the charger and the socket, and if the current information is greater than a preset current threshold, generating first connection information representing the connection between the charger and the socket;
or the like, or, alternatively,
first pressure information representing the pressure between the charger and the socket is obtained, and if the first pressure information is larger than a preset pressure threshold value, first connection information representing the connection between the charger and the socket is generated.
In a possible implementation manner of the embodiment of the present application, when the control module 1003 is configured to control the protection switch to be turned off according to the first connection information and the second disconnection information, the control module is specifically configured to:
after the first connection information is generated, acquiring charging duration information;
if the charging time length information is larger than or equal to the preset time threshold information, judging whether second disconnection information is generated or not,
and if so, controlling the protection switch to be switched off.
In a possible implementation manner of the embodiment of the present application, the intelligent charger auto-power-off device 100 further includes:
and the buffer module is used for starting the buffer device at the moment of generating the first connection information, and the buffer device is used for controlling the charger to be in delayed conduction with the socket.
In a possible implementation manner of the embodiment of the present application, the intelligent charger auto-power-off device 100 further includes:
and the standby charging module is used for controlling the standby charging switch to be closed if the standby charging module is connected, and the standby charging switch is a normally open switch and is arranged between the standby battery and the power supply.
In a possible implementation manner of the embodiment of the present application, the standby charging module is specifically configured to, when the charging switch is controlled to be closed if the charger is connected to the device to be charged and the socket:
if the charger is connected with the equipment to be charged and the socket, first electric quantity information representing the electric quantity of a battery of the equipment to be charged is obtained;
and judging whether the first electric quantity information is larger than a preset electric quantity threshold value, and if so, controlling the standby charging switch to be closed.
In a possible implementation manner of the embodiment of the application, when the standby charging module is used for controlling the standby charging switch to be turned off when the first electric quantity information is greater than the preset electric quantity threshold, the standby charging module is specifically used for:
and acquiring second electric quantity information representing the electric quantity of the standby battery.
And determining an electric quantity threshold value according to the second electric quantity information.
And when the first electric quantity information is greater than or equal to the electric quantity threshold value, controlling the standby charging switch to be closed.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The embodiment of the present application also introduces an electronic device from the perspective of a physical apparatus, as shown in fig. 7, an electronic device 1100 shown in fig. 7 includes: a processor 1101 and a memory 1103. The processor 1101 is coupled to the memory 1103, such as by a bus 1102. Optionally, the electronic device 1100 may also include a transceiver 1104. It should be noted that the transceiver 1104 is not limited to one in practical applications, and the structure of the electronic device 1100 is not limited to the embodiment of the present application.
The Processor 1101 may be a CPU (Central Processing Unit), a general purpose Processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array) or other Programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor 1101 may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs and microprocessors, and the like.
Bus 1102 may include a path that transfers information between the above components. The bus 1102 may be a PCI (Peripheral Component Interconnect) bus, an EISA (Extended Industry Standard Architecture) bus, or the like. The bus 1102 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in FIG. 7, but this is not intended to represent only one bus or type of bus.
The Memory 1103 may be a ROM (Read Only Memory) or other type of static storage device that can store static information and instructions, a RAM (Random Access Memory) or other type of dynamic storage device that can store information and instructions, an EEPROM (Electrically Erasable Programmable Read Only Memory), a CD-ROM (Compact Disc Read Only Memory) or other optical Disc storage, optical Disc storage (including Compact Disc, laser Disc, optical Disc, digital versatile Disc, blu-ray Disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to these.
The memory 1103 is used for storing application program codes for executing the present application, and the execution is controlled by the processor 1101. The processor 1101 is configured to execute application program code stored in the memory 1103 to implement the content shown in the foregoing method embodiments.
It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless explicitly stated herein. Moreover, at least a portion of the steps in the flow chart of the figure may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed alternately or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.

Claims (10)

1. An automatic power-off method of an intelligent charger is characterized by comprising the following steps:
judging whether the charger is connected with the socket or not, and if so, generating first connection information;
after first connection information is generated, whether the charger is connected with the equipment to be charged or not is judged;
if not, generating second disconnection information;
and controlling a protection switch to be disconnected according to the first connection information and the second disconnection information, wherein the protection switch is arranged at the connection position of the charger and the socket.
2. The method of claim 1, wherein the determining whether the charger is connected to a socket, and if so, generating first connection information comprises:
acquiring current information between the charger and a socket, and if the current information is greater than a preset current threshold, generating first connection information representing the connection between the charger and the socket;
or the like, or, alternatively,
acquiring first pressure information representing the pressure between the charger and the socket, and if the first pressure information is larger than a preset pressure threshold value, generating first connection information representing the connection between the charger and the socket.
3. The method of claim 1, wherein the controlling the protection switch to open according to the first connection information and the second disconnection information comprises:
after the first connection information is generated, acquiring charging duration information;
if the charging duration information is larger than or equal to the preset time threshold information, judging whether second disconnection information is generated or not;
and if so, controlling the protection switch to be switched off.
4. The method of claim 1, wherein the determining whether the charger is connected to the outlet, and if so, generating first connection information, and then further comprising:
and starting a buffer device at the moment of generating the first connection information, wherein the buffer device is used for controlling the charger to be in delayed conduction with the socket.
5. The method of claim 1, wherein after generating the first connection information, determining whether the charger is connected to the device to be charged, and then further comprising:
if the standby battery is connected with the power supply, the standby charging switch is controlled to be closed, and the standby charging switch is a normally open switch and is arranged between the standby battery and the power supply.
6. The method of claim 5, wherein controlling the charging switch to close if the charger is connected to the device to be charged and the receptacle comprises:
if the charger is connected with the equipment to be charged and the socket, first electric quantity information representing the electric quantity of a battery of the equipment to be charged is obtained;
judging whether the first electric quantity information is larger than or equal to a preset electric quantity threshold value or not,
and if so, controlling the standby charging switch to be closed.
7. The method of claim 6, wherein controlling the backup charge switch to close when the first charge amount information is greater than a preset charge amount threshold comprises:
acquiring second electric quantity information representing the electric quantity of the standby battery;
determining an electric quantity threshold value according to the second electric quantity information;
and when the first electric quantity information is larger than or equal to the electric quantity threshold value, controlling the standby charging switch to be closed.
8. The utility model provides an intelligent charger auto-power-off device which characterized in that includes:
the first judgment module is used for judging whether the charger is connected with the socket or not, and if so, generating first connection information;
the second judgment module is used for judging whether the charger is connected with the equipment to be charged or not after the first connection information is generated;
if not, generating second disconnection information;
and the control module controls a protection switch to be disconnected according to the first connection information and the second disconnection information, and the protection switch is arranged at the connection position of the charger and the socket.
9. An electronic device, comprising:
at least one processor;
a memory;
at least one application, wherein the at least one application is stored in the memory and configured to be executed by the at least one processor, the at least one application configured to: performing the method of any one of claims 1 to 7.
10. A computer-readable storage medium, having stored thereon a computer program, characterized in that, when the computer program is executed in a computer, it causes the computer to execute the method of any of claims 1-7.
CN202210168850.7A 2022-02-23 2022-02-23 Automatic power-off method and device for intelligent charger, electronic equipment and medium Active CN114552710B (en)

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