CN105978069A - Charging method and apparatus of mobile terminal, and mobile terminal - Google Patents

Abstract

Embodiments of the present invention provide a charging method and device for a mobile terminal and the mobile terminal. On the one hand, the charging method of the mobile terminal provided by the embodiment of the present invention includes: the controller detects whether the input voltage of the charging port is not less than the preset high voltage value; if the controller detects that the input voltage of the charging port is not less than the preset high voltage value, Then the conversion circuit converts the input voltage to obtain an output voltage equal to the preset low voltage value; the conversion circuit loads the output voltage to the charging circuit; the charging circuit charges the battery with the output voltage. The transmission line of the charger can be charged with a small current, reducing the requirements for charging wires. In addition, there is no need to add an MCU and multiple integrated circuit devices for complex protocol identification to the charger, thereby reducing the production cost of the charger.

Description

Charging method and device for mobile terminal and mobile terminal

【Technical field】

The present invention relates to the technical field of mobile terminals, in particular to a charging method and device for a mobile terminal and a mobile terminal.

【Background technique】

With the rapid development of mobile Internet technology, mobile terminals such as smart phones have become an indispensable tool in people's daily life. Users install various applications in mobile terminals to realize functions such as shopping, listening to music, and watching videos. This is a great challenge to the battery life of the mobile terminal. How to quickly and safely charge a mobile terminal has become a widely concerned issue.

In the prior art, there is mainly a VOOC charging method for fast charging a mobile terminal. The VOOC charging method directly outputs a large current at the charger end to charge the battery, and the power conversion process is completed in the charger. Communication identification is required between the charger and the mobile terminal, and a charging identification MCU and multiple integrated circuit devices need to be added to the charger. By communicating with mobile terminals to identify special fast-charging mobile terminals and ordinary mobile terminals, to avoid damage to ordinary mobile terminals by high current.

In the prior art method for quickly charging a mobile terminal, a large current is directly used to charge the mobile terminal at a charging port, which requires relatively high charging wires. In addition, MCU and multiple integrated circuit devices need to be added at the charger end to analyze complex protocols, which increases the production cost of the charger.

【Content of invention】

In view of this, the embodiments of the present invention provide a charging method and device for a mobile terminal and a mobile terminal to solve the problem of charging the mobile terminal directly at the charging port with a high current in the prior art, which requires a high charging wire. , and it is necessary to add an MCU and multiple integrated circuit devices on the charger side to analyze the complex protocol, which increases the technical problem of the production cost of the charger.

In a first aspect, an embodiment of the present invention provides a charging method for a mobile terminal, including:

The controller detects whether the input voltage of the charging port is not less than the preset high voltage value;

If the controller detects that the input voltage of the charging port is not less than a preset high voltage value, the conversion circuit converts the input voltage to obtain an output voltage, and the output voltage is equal to a preset low voltage value;

the conversion circuit loads the output voltage to a charging circuit;

The charging circuit charges the battery with the output voltage.

In the embodiment of the present invention, the controller detects whether the input voltage of the charging port is not less than the preset high voltage value; if the controller detects that the input voltage of the charging port is not less than the preset high voltage value, the conversion circuit converts the input voltage to obtain Output voltage, the output voltage is equal to the preset low voltage value; the conversion circuit loads the output voltage to the charging circuit; the charging circuit charges the battery with the output voltage. Since the output voltage of the charger electrically connected to the charging port is increased and the output current is reduced, and a conversion circuit is added to the mobile terminal, the transmission line of the charger can be charged with a small current, reducing the requirements for charging wires . And because the input of the charging port is a high voltage, the standard BC1.1 protocol can be used, and there is no need to add an MCU and multiple integrated circuit devices for complex protocol identification to the charger, reducing the production cost of the charger.

In a second aspect, an embodiment of the present invention provides a charging device for a mobile terminal, including: a charging port, a controller, a conversion circuit, a charging circuit, and a battery;

The input terminals of the controller and the conversion circuit are respectively electrically connected to the charging port, the controller is electrically connected to the input terminal of the conversion circuit, and the output terminal of the conversion circuit is connected to the input terminal of the charging circuit. The terminal is electrically connected, and the output terminal of the charging circuit is electrically connected to the battery;

The controller is used to detect whether the input voltage of the charging port is not less than a preset high voltage value;

The conversion circuit is configured to convert the input voltage to obtain an output voltage if the controller detects that the input voltage of the charging port is not less than a preset high voltage value, and the output voltage is equal to a preset low voltage value. Voltage value;

The conversion circuit is also used to load the output voltage to the charging circuit;

The charging circuit is used to charge the battery with the output voltage.

In a third aspect, an embodiment of the present invention provides a mobile terminal, including: the above-mentioned charging device for a mobile terminal.

【Description of drawings】

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. Those of ordinary skill in the art can also obtain other drawings based on these drawings without paying creative labor.

FIG. 1 is a flow chart of a charging method for a mobile terminal provided in Embodiment 1 of the present invention;

FIG. 2 is a flow chart of another method for charging a mobile terminal provided in Embodiment 2 of the present invention;

FIG. 3 is a schematic structural diagram of a charging device for a mobile terminal provided by Embodiment 3 of the present invention;

FIG. 4 is a schematic structural diagram of another charging device for a mobile terminal provided by Embodiment 4 of the present invention.

【detailed description】

In order to better understand the technical solutions of the present invention, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

It should be clear that the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a", "" and "the" are also intended to include the plural forms unless the context clearly dictates otherwise.

It should be understood that the term "and/or" used herein is only an association relationship describing associated objects, which means that there may be three relationships, for example, A and/or B, which may mean that A exists alone, and A and B exist simultaneously. B, there are three situations of B alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

Depending on the context, the word "if" as used herein may be interpreted as "at" or "when" or "in response to determining" or "in response to detecting". Similarly, depending on the context, the phrases "if determined" or "if detected (the stated condition or event)" could be interpreted as "when determined" or "in response to the determination" or "when detected (the stated condition or event) )" or "in response to detection of (a stated condition or event)".

Embodiment one

An embodiment of the present invention provides a charging method for a mobile terminal, please refer to FIG. 1 , which is a flowchart of a charging method for a mobile terminal provided by an embodiment of the present invention. As shown, the method includes the following steps:

S101. The controller detects whether the input voltage of the charging port is not less than a preset high voltage value.

In this embodiment, the controller can be integrated on the central processing unit. The controller is electrically connected to the charging port, and then electrically connected to the charger, so that the charger can charge the mobile terminal. In this embodiment, the charger for charging the mobile terminal may be a high-voltage charger, or may be an ordinary non-high-voltage charger.

In this embodiment, after the controller detects that the charger is electrically connected to the mobile terminal through the charging port, it detects whether the input voltage of the charging port is not less than a preset high voltage value. Wherein, the preset high voltage value may be set to a value higher than the output voltage of the high voltage charger. For example, if the output voltage value of the high-voltage charger for charging the mobile terminal is 9V, the preset high voltage value can be set to 9.5V, or other values satisfying the conditions, which are not limited in this embodiment.

In this embodiment, if the controller detects that the input voltage of the charging port is not less than the preset high voltage value, it means that the charger for charging the mobile terminal is a high-voltage charger; if the controller detects that the input voltage of the charging port is less than the preset high voltage value, it means that the charger for charging the mobile terminal is an ordinary non-high-voltage charger.

S102. If the controller detects that the input voltage of the charging port is not less than the preset high voltage value, the conversion circuit converts the input voltage to obtain an output voltage, and the output voltage is equal to the preset low voltage value.

In this embodiment, a DC/DC converter may be included in the conversion circuit, and the DC/DC converter is a step-down DC/DC converter to convert the input voltage so that the output voltage is lower than the input voltage.

Specifically, in this embodiment, if the controller detects that the input voltage of the charging port is not less than the preset high voltage value, it means that the charger for charging the mobile terminal is a high-voltage charger, and the output voltage of the high-voltage charger is not less than the preset high voltage value. High voltage value, the output current is a relatively small current, then the conversion circuit converts the input voltage, and the converted output voltage is equal to the preset low voltage value. In this embodiment, the preset low voltage value may be 5V, or other value lower than the input voltage, which is not limited in this embodiment.

S103, the conversion circuit loads the output voltage to the charging circuit.

Specifically, in this embodiment, the conversion circuit loads the output voltage to the charging circuit, and the charging circuit always obtains a stable voltage input during the charging process of the battery.

S104, the charging circuit charges the battery with the output voltage.

Specifically, in this embodiment, during the process of charging the battery, the charging circuit always charges the battery with a stable output voltage. Since the output voltage of the charging circuit is equal to the preset low voltage value, when charging the battery, it is Charge the battery with high current and low voltage.

It should be noted that, in this embodiment, when the charger communicates with the charging device of the mobile terminal, the standard BC1.1 protocol is adopted.

In the embodiment of the present invention, the controller detects whether the input voltage of the charging port is not less than the preset high voltage value; if the controller detects that the input voltage of the charging port is not less than the preset high voltage value, the conversion circuit converts the input voltage to obtain Output voltage, the output voltage is equal to the preset low voltage value; the conversion circuit loads the output voltage to the charging circuit; the charging circuit charges the battery with the output voltage. Since the output voltage of the charger electrically connected to the charging port is increased and the output current is reduced, and a conversion circuit is added to the mobile terminal, the transmission line of the charger can be charged with a small current, reducing the requirements for charging wires . And because the input of the charging port is a high voltage, the standard BC1.1 protocol can be used, and there is no need to add an MCU and multiple integrated circuit devices for complex protocol identification to the charger, reducing the production cost of the charger.

It should be noted that the mobile terminals involved in the embodiments of the present invention may include, but are not limited to, mobile phones, personal digital assistants (Personal Digital Assistant, PDA), wireless handheld devices, tablet computers (Tablet Computer), MP3 players, MP4 player device etc.

Embodiment two

An embodiment of the present invention provides another method for charging a mobile terminal, please refer to FIG. 2 , which is a flow chart of the method for charging a mobile terminal provided by an embodiment of the present invention. Compared with the first embodiment, this embodiment is a more preferred embodiment, and the method for charging a mobile terminal provided by this embodiment includes the following steps.

S201, the controller detects whether the input voltage of the charging port is not less than a preset high voltage value, if yes, executes S202, otherwise, executes S205.

Specifically, in this embodiment, a high-voltage charger may be used to charge the mobile terminal, and an ordinary non-high-voltage charger may also be used to charge the mobile terminal. If the controller determines that the input voltage of the charging port is lower than the preset high voltage value, it means that the ordinary non-high voltage charger is electrically connected to the charging device of the mobile terminal through the charging port to charge the battery of the mobile terminal. If the controller determines that the input voltage of the charging port is not less than the preset high voltage value, it means that the high voltage charger is electrically connected to the charging device of the mobile terminal through the charging port to charge the battery of the mobile terminal.

S202. The conversion circuit converts the input voltage to obtain an output voltage, and the output voltage is equal to a preset low voltage value.

S203, the conversion circuit loads the output voltage to the charging circuit.

S204, the charging circuit charges the battery with the output voltage.

In this embodiment, the implementation manner of S202-S204 is the same as the implementation manner of S102-S104 in Embodiment 1 of the present invention, and will not be repeated here.

After S204 is executed, S206 is executed.

S205, the charging circuit charges the battery with the input voltage.

In this embodiment, if the controller determines that the input voltage of the charging port is lower than the preset high voltage value, it means that the ordinary non-high voltage charger is electrically connected to the charging device of the mobile terminal through the charging port, and the charging circuit charges the battery with the input voltage. The input voltage is the output voltage of a common non-high voltage charger.

After S205 is executed, S214 is executed.

S206, the controller collects the temperature of the conversion circuit and the charging circuit.

Further, in this implementation, the controller is also electrically connected to the charging circuit, and collects the temperatures of the conversion circuit and the charging circuit respectively at preset intervals. Wherein, the preset time may be 5 seconds, or other appropriate values, which is not limited in this embodiment.

S207, the controller judges whether the temperature of the conversion circuit is higher than the temperature of the charging circuit, if yes, executes S208, and if not, executes S210.

In this embodiment, if the controller determines that the temperature of the conversion circuit is higher than the temperature of the charging circuit, it means that the conversion circuit generates more heat; if the controller determines that the temperature of the conversion circuit is lower than the temperature of the charging circuit, it means that the charging circuit generates heat larger.

S208. The controller sends a first control instruction to the conversion circuit, where the first control instruction carries a first updated output voltage.

Further, in this embodiment, in order to speed up the heat dissipation of the conversion circuit and speed up the conversion efficiency, the controller sends the first control instruction to the conversion circuit, so that the conversion circuit will input The voltage is converted to a first updated output voltage.

Wherein, the first update output voltage is greater than the preset low voltage value and smaller than the preset high voltage value. For example, the preset low voltage value may be 4.5V, the first updated output voltage may be 5V, and the preset high voltage value may be 9.5V. The value of the first updated output voltage may also be other values satisfying the conditions, which is not limited in this embodiment.

S209, the conversion circuit converts the input voltage into the first updated output voltage according to the first updated output voltage in the first control instruction, and loads the voltage into the charging circuit.

Further, in this embodiment, the conversion circuit converts the input voltage into the first updated output voltage according to the first control instruction, and loads the voltage into the charging circuit. Since the value of the first updated output voltage is greater than the value of the original output voltage, the conversion efficiency of the conversion circuit is improved, the heat generation of the conversion circuit is reduced, and the temperature of the conversion circuit is lowered.

After S209 is executed, S213 is executed.

S210, the controller judges whether the temperature of the conversion circuit is lower than the temperature of the charging circuit, if yes, executes S211, and if not, executes S204.

In this embodiment, after the controller determines that the temperature of the conversion circuit is not higher than the temperature of the charging circuit, it judges whether the temperature of the conversion circuit is lower than the temperature of the charging circuit. If the temperature of the conversion circuit is lower than the temperature of the charging circuit, it means that the charging circuit The heat generation is large, and the charging circuit needs to be cooled. If the temperature of the conversion circuit is equal to the temperature of the charging circuit, it means that the heat generation of the conversion circuit and the charging circuit is balanced.

S211. The controller sends a second control instruction to the conversion circuit, where the second control instruction carries a second updated output voltage.

Further, in this embodiment, in order to speed up the heat dissipation of the charging circuit and speed up the charging efficiency, the controller sends a second control instruction to the conversion circuit, so that the conversion circuit will input The voltage is converted to a second updated output voltage.

Wherein, the second update output voltage is smaller than the preset low voltage value. For example, the preset low voltage value may be 4.5V, and the second updated output voltage may be 4.3V, or other values satisfying the conditions, which are not limited in this embodiment.

S212. The conversion circuit converts the input voltage into a second updated output voltage according to the second updated output voltage, and loads the voltage into the charging circuit.

Further, in this embodiment, the conversion circuit converts the input voltage into a second updated output voltage according to the second control instruction, and loads the voltage into the charging circuit. Since the value of the second updated output voltage is smaller than the value of the original output voltage, the charging efficiency of the charging circuit is improved, the heating of the charging circuit is reduced, and the temperature of the charging circuit is lowered.

S213. The charging circuit charges the battery with the first updated output voltage or the second updated output voltage.

In this embodiment, if the controller determines that the temperature of the conversion circuit is higher than the temperature of the charging circuit, the conversion circuit loads the first updated output voltage to the charging circuit, and the charging circuit charges the battery with the first updated output voltage. If the controller If it is determined that the temperature of the conversion circuit is lower than the temperature of the charging circuit, the conversion circuit loads the second updated output voltage to the charging circuit, and the charging circuit charges the battery with the second updated output voltage.

S214, the controller monitors whether the power of the battery is equal to the preset full power, and if the controller determines that the power of the battery is equal to the preset full power, then close the conversion circuit and the charging circuit.

Further, in this embodiment, the controller is electrically connected to the battery, and monitors the power of the battery. If it is detected that the power of the battery is equal to the preset full power, it means that the battery is fully charged, and there is no need for a conversion circuit to adjust the input voltage. conversion, and the charging circuit is not needed to continue charging the battery, then the conversion circuit and the charging circuit are turned off.

In the embodiment of the present invention, after the charging circuit charges the battery with the output voltage, the controller collects the temperature of the conversion circuit and the charging circuit, and the controller judges that the temperature of the conversion circuit is higher than the temperature of the charging circuit, and if so, the controller sends a The first control instruction, the first control instruction carries the first updated output voltage, and the conversion circuit converts the input voltage into the first updated output voltage according to the first updated output voltage in the first control instruction, and loads it into the charging circuit for charging The circuit charges the battery with the first updated output voltage. Otherwise, the controller judges whether the temperature of the conversion circuit is lower than the temperature of the charging circuit, and if so, the controller sends a second control command to the conversion circuit, the second control command carries a second update output voltage, and the conversion circuit outputs the voltage according to the second update. voltage, converting the input voltage into a second updated output voltage and loading it into the charging circuit, and the charging circuit charges the battery with the second updated output voltage. While reducing the requirements for the charging wire and the production cost of the charger, the dynamic adjustment of the heating circuit is realized, so that the heating of the mobile terminal can be switched between the two circuits, and the heating problem of the mobile terminal is improved.

Embodiment Three

An embodiment of the present invention provides a charging device for a mobile terminal, please refer to FIG. 3 , which is a schematic structural diagram of the device provided by the embodiment of the present invention. As shown in the figure, the device provided by this embodiment includes: a charging port 31 , a controller 32 , a conversion circuit 33 , a charging circuit 34 and a battery 35 .

Wherein, the input ends of the controller 32 and the conversion circuit 33 are electrically connected to the charging port 31 respectively, the controller 32 is electrically connected to the input end of the conversion circuit 33, the output end of the conversion circuit 33 is electrically connected to the input end of the charging circuit 34, and charging The output terminal of the circuit 34 is electrically connected to the battery 35 .

In this embodiment, the controller 32 is configured to detect whether the input voltage of the charging port 31 is not less than a preset high voltage value.

Specifically, in this embodiment, the controller 32 may be integrated on the central processing unit. The controller 32 is electrically connected to the charging port 31, and then electrically connected to the charger, so that the charger can charge the mobile terminal. After the controller 32 detects that the charger is electrically connected to the mobile terminal through the charging port 31 , it detects whether the input voltage of the charging port 31 is not less than a preset high voltage value. Wherein, the preset high voltage value may be set to a value higher than the output voltage of the high voltage charger.

The conversion circuit 33 is configured to convert the input voltage to obtain an output voltage if the controller 32 detects that the input voltage of the charging port 31 is not less than the preset high voltage value, and the output voltage is equal to the preset low voltage value.

Specifically, in this embodiment, if the controller 32 detects that the input voltage of the charging port 31 is not less than the preset high voltage value, it means that the charger for charging the mobile terminal is a high-voltage charger, and the output voltage of the high-voltage charger is not less than The preset high voltage value, the output current is a relatively small current, then the conversion circuit 33 converts the input voltage, and the converted output voltage is equal to the preset low voltage value.

In this embodiment, the conversion circuit 33 includes a DC/DC converter, and the DC/DC converter is a step-down DC/DC converter to convert the input voltage so that the output voltage is lower than the input voltage.

The conversion circuit 34 is also used to load the output voltage to the charging circuit.

Specifically, in this embodiment, the conversion circuit 33 loads the output voltage to the charging circuit 34 , and the charging circuit 34 always obtains a stable voltage input during the charging process of the battery 35 .

The charging circuit 34 is used to charge the battery 35 with the output voltage.

Specifically, in this embodiment, during the process of charging the battery 35 by the charging circuit 34, the battery 35 is always charged with a stable output voltage. Since the output voltage of the charging circuit is equal to the preset low voltage value, the battery 35 is charged , the battery 35 is charged in a high-current and low-voltage manner.

Since the components in this embodiment can execute the method shown in FIG. 1 , for parts not described in detail in this embodiment, reference may be made to the relevant description of FIG. 1 .

The technical solution of the embodiment of the present invention has the following beneficial effects: the controller detects whether the input voltage of the charging port is not less than the preset high voltage value; if the controller detects that the input voltage of the charging port is not less than the preset high voltage value, the conversion circuit will input The voltage is converted to obtain an output voltage equal to a preset low voltage value; the conversion circuit loads the output voltage to the charging circuit; the charging circuit charges the battery with the output voltage. Since the output voltage of the charger electrically connected to the charging port is increased and the output current is reduced, and a conversion circuit is added to the mobile terminal, the transmission line of the charger can be charged with a small current, reducing the requirements for charging wires . And because the input of the charging port is a high voltage, the standard BC1.1 protocol can be used, and there is no need to add an MCU and multiple integrated circuit devices for complex protocol identification to the charger, reducing the production cost of the charger.

Embodiment four

The embodiment of the present invention provides another charging device for a mobile terminal, please refer to FIG. 4 , which is a schematic structural diagram of the device provided by the embodiment of the present invention. As shown in the figure, on the basis of the previous embodiment, in the charging device for the mobile terminal of this embodiment, the controller 32 is electrically connected to the charging circuit 34 , and the controller 32 is electrically connected to the battery 35 .

Further, in this embodiment, the controller 32 is also used to collect the temperatures of the conversion circuit 33 and the charging circuit 34 after the charging circuit 34 charges the battery 35 with the output voltage. The controller 32 is also used to send a first control instruction to the conversion circuit 33 if it is determined that the temperature of the conversion circuit 33 is higher than the temperature of the charging circuit 34, the first control instruction carries the first updated output voltage, and the first updated output voltage greater than the preset low voltage value and less than the preset high voltage value. The conversion circuit 33 is further configured to convert the input voltage into a first updated output voltage according to the first updated output voltage in the first control instruction, and load it into the charging circuit.

Specifically, in this embodiment, the controller 32 can separately collect the temperatures of the conversion circuit 33 and the charging circuit 34 every preset time interval. If the controller 32 determines that the temperature of the conversion circuit 33 is higher than the temperature of the charging circuit 34, it means that the conversion circuit 33 generates a large amount of heat, and in order to speed up the heat dissipation of the conversion circuit 33 and speed up the conversion efficiency, the controller 32 sends a signal to the conversion circuit 33. The first control command enables the converting circuit 33 to convert the input voltage into the first updated output voltage according to the first updated output voltage in the first control command. The conversion circuit 33 converts the input voltage into a first update output voltage according to the first control instruction, and loads the voltage to the charging circuit 34 . Since the value of the first updated output voltage is greater than the value of the original output voltage, the conversion efficiency of the conversion circuit is improved, the heat generation of the conversion circuit is reduced, and the temperature of the conversion circuit is lowered.

Further, the controller 32 is also configured to send a second control instruction to the conversion circuit 33 if it is determined that the temperature of the conversion circuit 33 is lower than the temperature of the charging circuit 34, the second control instruction carries a second updated output voltage, and the second The updated output voltage is lower than the preset low voltage value. The conversion circuit 33 is further configured to convert the input voltage into a second updated output voltage according to the second updated output voltage in the second control instruction, and load the voltage to the charging circuit 34 .

Specifically, in this embodiment, if the controller 32 determines that the temperature of the conversion circuit 33 is lower than the temperature of the charging circuit 34 , it means that the charging circuit 34 generates a lot of heat, and the charging circuit 34 needs to be cooled. In order to speed up the heat dissipation of the charging circuit 34 and to speed up the charging efficiency, the controller 32 sends a second control command to the conversion circuit 33, so that the conversion circuit 33 converts the input voltage to the first output voltage according to the second update output voltage in the second control command. Second, update the output voltage and load it into the charging circuit 34 . Since the value of the second updated output voltage is smaller than the value of the original output voltage, the charging efficiency of the charging circuit 34 is improved, the heating of the charging circuit 34 is reduced, and the temperature of the charging circuit 34 is reduced.

Further, the controller 32 is also used to monitor whether the power of the battery 35 is equal to the preset full power. The controller 32 is further configured to turn off the conversion circuit 33 and the charging circuit 34 if it is detected that the electric quantity of the battery 35 is equal to the predetermined full electric quantity.

Specifically, in this embodiment, if the controller 32 detects that the battery 35 is equal to the preset full battery capacity, it means that the battery 35 is fully charged, and the conversion circuit 33 is not required to convert the input voltage, and the charging circuit 34 is not required to continue charging. To charge the battery 35, the conversion circuit 33 and the charging circuit 34 are turned off.

Since the components in this embodiment can execute the method shown in FIG. 2 , for parts not described in detail in this embodiment, reference may be made to the relevant description of FIG. 2 .

The technical solution of the embodiment of the present invention has the following beneficial effects: after the charging circuit charges the battery with the output voltage, the controller collects the temperature of the conversion circuit and the charging circuit, and the controller judges that the temperature of the conversion circuit is higher than the temperature of the charging circuit, and if so, Then the controller sends the first control instruction to the conversion circuit, the first control instruction carries the first updated output voltage, and the conversion circuit converts the input voltage into the first updated output voltage according to the first updated output voltage in the first control instruction, and loaded to the charging circuit, and the charging circuit charges the battery with the first updated output voltage. Otherwise, the controller judges whether the temperature of the conversion circuit is lower than the temperature of the charging circuit, and if so, the controller sends a second control command to the conversion circuit, the second control command carries a second update output voltage, and the conversion circuit outputs the voltage according to the second update. voltage, converting the input voltage into a second updated output voltage and loading it into the charging circuit, and the charging circuit charges the battery with the second updated output voltage. The dynamic adjustment of the heating circuit is realized, so that the heating of the mobile terminal can be switched between the two circuits, and the heating problem of the mobile terminal is improved.

Embodiment five

This embodiment provides a mobile terminal, and the mobile terminal includes the mobile charging device as in Embodiment 1 or Embodiment 2 above.

In this embodiment, the structure and function of the charging device for the mobile terminal are the same as those of the charging device for the mobile terminal in Embodiment 1 or Embodiment 2, and will not be repeated here.

In the several embodiments provided by the present invention, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of circuits is only a logical function division. In actual implementation, there may be other division methods. For example, multiple circuits can be combined or integrated into Another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or circuits may be in electrical, mechanical or other forms.

A circuit described as a separate component may or may not be physically separated, and a component shown as a unit may or may not be a physical unit, that is, it may be located in one place, or may be distributed over multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, the circuits in each embodiment of the present invention may be integrated into one processing unit, or each circuit may exist separately physically, or two or more circuits may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware, or in the form of hardware plus software functional units.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims (9)

1. A charging method for a mobile terminal, comprising: The controller detects whether the input voltage of the charging port is not less than the preset high voltage value; If the controller detects that the input voltage of the charging port is not less than a preset high voltage value, the conversion circuit converts the input voltage to obtain an output voltage, and the output voltage is equal to a preset low voltage value; the conversion circuit loads the output voltage to a charging circuit; The charging circuit charges the battery with the output voltage. 2. The method according to claim 1, characterized in that, after the charging circuit charges the battery with the output voltage, it further comprises: The controller collects the temperature of the conversion circuit and the charging circuit; If the controller determines that the temperature of the conversion circuit is higher than the temperature of the charging circuit, the controller sends a first control instruction to the conversion circuit, and the first control instruction carries a first updated output voltage , the first updated output voltage is greater than the preset low voltage value and smaller than the preset high voltage value; The conversion circuit converts the input voltage into a first updated output voltage according to the first updated output voltage in the first control instruction, and loads the input voltage into the charging circuit. 3. The method according to claim 2, further comprising: If the controller determines that the temperature of the conversion circuit is lower than the temperature of the charging circuit, the controller sends a second control instruction to the conversion circuit, and the second control instruction carries a second updated output voltage , the second updated output voltage is less than a preset low voltage value; The conversion circuit converts the input voltage into a second updated output voltage according to the second updated output voltage in the second control instruction, and loads the voltage into the charging circuit. 4. The method according to claim 2 or 3, further comprising: The controller monitors whether the electric quantity of the battery is equal to the preset full electric quantity; If the controller detects that the electric quantity of the battery is equal to the preset full electric quantity, the conversion circuit and the charging circuit are turned off. 5. A charging device for a mobile terminal, comprising: a charging port, a controller, a conversion circuit, a charging circuit and a battery; The input terminals of the controller and the conversion circuit are respectively electrically connected to the charging port, the controller is electrically connected to the input terminal of the conversion circuit, and the output terminal of the conversion circuit is connected to the input terminal of the charging circuit. The terminal is electrically connected, and the output terminal of the charging circuit is electrically connected to the battery; The controller is used to detect whether the input voltage of the charging port is not less than a preset high voltage value; The conversion circuit is configured to convert the input voltage to obtain an output voltage if the controller detects that the input voltage of the charging port is not less than a preset high voltage value, and the output voltage is equal to a preset low voltage value. Voltage value; The conversion circuit is also used to load the output voltage to the charging circuit; The charging circuit is used to charge the battery with the output voltage. 6. The device according to claim 5, wherein the controller is electrically connected to the charging circuit; The controller is also used to collect the temperature of the conversion circuit and the charging circuit after the charging circuit charges the battery with the output voltage; The controller is further configured to send a first control instruction to the conversion circuit if it is determined that the temperature of the conversion circuit is higher than the temperature of the charging circuit, and the first control instruction carries a first updated output voltage , the first updated output voltage is greater than the preset low voltage value and smaller than the preset high voltage value; The conversion circuit is further configured to convert the input voltage into a first updated output voltage according to the first updated output voltage in the first control instruction, and load it into the charging circuit. 7. The device of claim 6, wherein: The controller is further configured to send a second control instruction to the conversion circuit if it is determined that the temperature of the conversion circuit is lower than the temperature of the charging circuit, and the second control instruction carries a second updated output voltage , the second updated output voltage is less than a preset low voltage value; The conversion circuit is further configured to convert the input voltage into a second updated output voltage according to the second updated output voltage in the second control instruction, and load it into the charging circuit. 8. The device according to claim 6 or 7, wherein the controller is electrically connected to the battery; The controller is also used to monitor whether the power of the battery is equal to the preset full power; The controller is further configured to turn off the converting circuit and the charging circuit if it is detected that the electric quantity of the battery is equal to the preset full electric quantity. 9. A mobile terminal, characterized by comprising the charging device for the mobile terminal according to any one of claims 5-8.