CN106663848B

CN106663848B - Charging method and mobile terminal

Info

Publication number: CN106663848B
Application number: CN201580004159.3A
Authority: CN
Inventors: 孙文涌; 胡军
Original assignee: Huawei Technologies Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2015-05-27
Filing date: 2015-05-27
Publication date: 2020-03-20
Anticipated expiration: 2035-05-27
Also published as: WO2016187842A1; CN106663848A

Abstract

A method of charging, the method comprising: acquiring a temperature rise data model, wherein the temperature rise data model comprises a corresponding relation among a temperature rise value of a charging chip, charging current and working voltage of a battery; acquiring a target working voltage value of the battery, wherein the target working voltage value of the battery is the current working voltage value of the battery; determining a target charging current corresponding to a temperature rise value meeting preset conditions according to a target working voltage value and a temperature rise data model of the battery; the charging current of the battery is set as a target charging current.

Description

Charging method and mobile terminal

Technical Field

The embodiment of the invention relates to the field of circuits, in particular to a charging method and a mobile terminal.

Background

The linear charging is a common charging mode, and the linear charging chip generates a large amount of heat during working due to low conversion efficiency, so that the temperature of the mobile phone rises too high, the mobile phone is easily damaged, and potential safety hazards are caused.

The heat generated by the chip is approximately equal to the voltage division multiplied by the charging current of the chip, so in the prior art, the temperature of the chip is generally reduced by gradually reducing the charging current through software.

However, for some linear charging chips, the current is reduced by controlling the Pmos tube, and when the charging current is reduced, the resistance of the Pmos tube is also increased, which results in the increase of the chip voltage division, and when the voltage division is increased too much, the heat generated by the chip is increased. That is to say, in some scenes, the charging current is reduced, so that not only is the heat generated by the chip not reduced, but also the heat is increased, the temperature of the mobile phone is increased, the mobile phone is damaged, and potential safety hazards are caused.

Disclosure of Invention

The embodiment of the invention provides a charging method and a mobile terminal, which are used for selecting the optimal charging current with the temperature rise value meeting the preset condition under the current battery working voltage, and avoiding potential safety hazards caused by overhigh voltage division and aggravated temperature rise of a mobile phone due to reduction of the charging current.

In view of the above, a first aspect of the present invention provides a charging method, including:

acquiring a temperature rise data model, wherein the temperature rise data model comprises a corresponding relation among a temperature rise value of a charging chip, charging current and working voltage of a battery;

acquiring a target working voltage value of a battery, wherein the target working voltage value of the battery is the current working voltage value of the battery;

determining a target charging current corresponding to a temperature rise value meeting a preset condition according to the target working voltage value of the battery and the temperature rise data model;

setting a charging current of the battery as a target charging current.

With reference to the first aspect of the present invention, in a first implementation manner of the first aspect of the present invention, the obtaining, by the mobile terminal, a temperature rise data model includes:

determining a working voltage value of the analog battery, adjusting charging current gears, and recording a temperature rise value corresponding to each charging current gear, wherein the temperature rise value is a rise value of the surface temperature of the charging chip within preset time;

and generating a temperature rise data model corresponding to the constant voltage value according to each charging current gear and the temperature rise value.

With reference to the first aspect of the present invention, in a second implementation manner of the first aspect of the present invention, the determining, according to the target operating voltage value of the battery and the temperature rise data model, a target charging current corresponding to a temperature rise value that meets a preset condition includes:

calculating a target temperature rise data model corresponding to the target working voltage value of the battery according to the temperature rise data model;

and selecting a target charging current corresponding to the temperature rise value meeting the preset condition according to the target temperature rise data model.

With reference to the second implementation manner of the first aspect of the present invention, in a third implementation manner of the first aspect of the present invention, the calculating, according to the temperature rise data model, a target temperature rise data model corresponding to a target operating voltage value of the battery includes:

judging whether the working voltage in the temperature rise data model contains the target working voltage value or not;

if so, taking the temperature rise data model corresponding to the target working voltage value in the temperature rise data model as a target temperature rise data model;

and if not, determining a target temperature rise data model according to the temperature rise data model corresponding to the working voltage value of which the difference value with the target working voltage value meets the preset condition in the temperature rise data model.

With reference to the third embodiment mode of the first aspect of the present invention, in a fourth embodiment mode of the first aspect of the present invention, the determining a target temperature rise data model according to a temperature rise data model corresponding to a working voltage value of the temperature rise data model whose difference value between the target working voltage value and the working voltage value meets a preset condition includes:

determining a first working voltage value and a second working voltage value which have the minimum difference value with the target working voltage value in the temperature rise data model;

determining a first temperature rise data model corresponding to the first working voltage value and a second temperature rise data model corresponding to the second working voltage value;

linearly calculating according to the first temperature rise data model and the second temperature rise data model to obtain the target working voltage value and a target temperature rise value corresponding to each charging current gear;

and generating a target temperature rise data model according to each charging current gear and the target temperature rise value.

With reference to the second, third, or fourth aspect of the first aspect of the present invention, in a fifth aspect of the first aspect of the present invention, the selecting, according to the target temperature rise data model, a target charging current corresponding to a temperature rise value that satisfies a preset condition includes:

determining an alternative temperature rise value which is smaller than a preset temperature rise value in the temperature rise values of the target temperature rise data model;

determining alternative charging current corresponding to the alternative temperature rise value;

and taking the maximum charging current in the alternative charging currents as a target charging current.

With reference to the second, third, or fourth implementation manner of the first aspect of the present invention, in a sixth implementation manner of the first aspect of the present invention, the selecting, according to the target temperature rise data model, a target charging current corresponding to a temperature rise value that satisfies a preset condition includes:

determining the minimum value of the temperature rise values of the target temperature rise data model;

taking the charging current corresponding to the minimum value as an alternative charging current;

A second aspect of the present invention provides a charging method, including:

adjusting the charging current of the battery within a preset current range, and reading the input end voltage and the output end voltage of a charging chip under different charging currents;

calculating heat loss values corresponding to the charging currents according to the input end voltage and the output end voltage;

determining a target charging current corresponding to a heat loss value meeting a preset condition in the heat loss values;

the charging current of the battery is set as a target charging current.

With reference to the second aspect of the present invention, in a first embodiment of the second aspect of the present invention, the determining a target charging current corresponding to a heat loss value satisfying a preset condition among the heat loss values includes:

determining an alternative heat loss value which is smaller than a preset heat loss value in the heat loss value;

determining alternative charging current corresponding to the alternative heat loss value;

With reference to the second aspect of the present invention, in a second embodiment of the second aspect of the present invention, the determining a target charging current corresponding to a heat loss value satisfying a preset condition among the heat loss values includes:

determining a minimum heat loss of the heat loss values;

determining alternative charging current corresponding to the minimum heat loss;

A third aspect of the present invention provides a mobile terminal, including:

the first acquisition module is used for acquiring a temperature rise data model, and the temperature rise data model comprises a corresponding relation among a temperature rise value of a charging chip, a charging current and a working voltage of a battery;

the second acquisition module is used for acquiring a target working voltage value of the battery, wherein the target working voltage value of the battery is the current working voltage value of the battery;

the determining module is used for determining a target charging current corresponding to the temperature rise value meeting preset conditions according to the target working voltage value of the battery acquired by the second acquiring module and the temperature rise data model acquired by the first acquiring module;

and the setting module is used for setting the charging current of the battery as the target charging current determined by the determination module.

With reference to the third aspect of the present invention, in a first implementation manner of the third aspect of the present invention, the first obtaining module includes:

the control submodule is used for determining the working voltage value of the battery, adjusting the charging current gears and recording the temperature rise value corresponding to each charging current gear, wherein the temperature rise value is the rise value of the surface temperature of the charging chip within preset time;

and the generating submodule is used for generating a temperature rise data model corresponding to the working voltage value according to each charging current gear and temperature rise value recorded by the control unit.

With reference to the third aspect of the present invention, in a second implementation manner of the third aspect of the present invention, the determining module includes:

the calculation submodule is used for calculating a target temperature rise data model corresponding to the target working voltage value of the battery according to the temperature rise data model;

and the selection submodule is used for selecting the target charging current corresponding to the temperature rise value meeting the preset condition according to the target temperature rise data model.

With reference to the second implementation manner of the third aspect of the present invention, in a third implementation manner of the third aspect of the present invention, the calculation sub-module includes:

the judging unit is used for judging whether the working voltage in the temperature rise data model acquired by the first acquiring module contains the target working voltage value acquired by the acquiring module;

the first determining unit is used for taking a temperature rise data model corresponding to the target working voltage value in the temperature rise data model as a target temperature rise data model when the judging unit determines that the working voltage contains the target working voltage value;

and the second determining unit is used for determining a target temperature rise data model according to a temperature rise data model corresponding to the working voltage value of which the difference value meets a preset condition in the temperature rise data model when the judging unit determines that the working voltage does not contain the target working voltage value.

With reference to the third embodiment of the third aspect of the present invention, in a fourth embodiment of the third aspect of the present invention, the second determination unit includes:

the first determining subunit is used for determining a first working voltage value and a second working voltage value which have the minimum difference value with the target working voltage value in the temperature rise data model;

the second determining subunit is used for determining a first temperature rise data model corresponding to the first working voltage value determined by the first determining subunit and a second temperature rise data model corresponding to the second working voltage value;

the calculating subunit is used for obtaining the target working voltage value and the target temperature rise value corresponding to each charging current gear through linear calculation according to the first temperature rise data model and the second temperature rise data model determined by the second determining subunit;

and the generating subunit is used for generating a target temperature rise data model according to the charging current gears and the target temperature rise value obtained by the calculating subunit.

With reference to the second, third or fourth embodiment of the third aspect of the present invention, in a fifth embodiment of the third aspect of the present invention, the selection submodule includes:

a third determining unit, configured to determine an alternative temperature increase value smaller than a preset temperature increase value in the temperature increase values of the target temperature increase data model;

a fourth determining unit, configured to determine an alternative charging current corresponding to the alternative temperature increase value;

a fifth determining unit configured to take a maximum charging current of the candidate charging currents determined by the fourth determining unit as a target charging current.

With reference to the second, third or fourth embodiments of the third aspect of the present invention, in a sixth embodiment of the third aspect of the present invention, the selection submodule includes:

a sixth determining unit, configured to determine a minimum value of temperature rise values of the target temperature rise data model;

a seventh determining unit, configured to determine an alternative charging current corresponding to the minimum value determined by the sixth determining unit;

an eighth determining unit configured to take a maximum charging current of the candidate charging currents determined by the seventh determining unit as a target charging current.

A fourth aspect of the present invention provides a mobile terminal, comprising:

the control module is used for adjusting the charging current of the battery within a preset current range and reading the input end voltage and the output end voltage of the charging chip under different charging currents;

the calculation module is used for calculating heat loss values corresponding to the charging currents according to the input end voltage and the output end voltage;

the determining module is used for determining a target charging current corresponding to the heat loss value meeting the preset condition in the heat loss values obtained by the calculating module;

With reference to the fourth aspect of the present invention, in a first implementation manner of the fourth aspect of the present invention, the determining module includes:

a first determining submodule for determining an alternative heat loss value smaller than a preset heat loss value among the heat loss values;

the second determining submodule is used for determining alternative charging current corresponding to the alternative heat loss value determined by the first determining submodule;

and the third determining submodule is used for taking the maximum charging current in the alternative charging currents determined by the second determining submodule as the target charging current.

With reference to the fourth aspect of the present invention, in a second implementation manner of the fourth aspect of the present invention, the determining module includes:

a fourth determination submodule for determining a minimum heat loss of the heat loss values;

a fifth determining submodule, configured to determine an alternative charging current corresponding to the minimum heat loss determined by the fourth determining submodule;

a sixth determining submodule, configured to use a maximum charging current of the candidate charging currents determined by the fifth determining submodule as a target charging current.

A fifth aspect of the present invention provides a mobile terminal, including: the charging control circuit comprises a processor, a charging control circuit, a voltage detection circuit and a memory;

the voltage detection circuit performs the steps of: the battery is connected to obtain the working voltage of the battery;

the processor performs the steps of:

determining a target charging current corresponding to a temperature rise value of a preset condition according to the target working voltage value of the battery and the temperature rise data model;

the charge control circuit performs the steps of: setting a charging current of the battery to a target charging current determined by the processor.

With reference to the fifth aspect of the present invention, in the first embodiment of the fifth aspect of the present invention,

the charging control circuit specifically executes the following steps:

adjusting a charging current gear;

the memory specifically performs the steps of: recording the temperature rise value corresponding to each charging current gear;

the processor specifically executes the following steps:

determining the working voltage value of the analog battery;

and generating a temperature rise data model corresponding to the working voltage value according to each charging current gear and the temperature rise value recorded by the memory, wherein the temperature rise value is the rise value of the surface temperature of the charging chip within preset time.

With reference to the fifth aspect of the present invention, in a second implementation manner of the fifth aspect of the present invention, the processor specifically executes the following steps:

calculating a target temperature rise data model corresponding to the target working voltage value of the battery according to the temperature rise data model, wherein the target temperature rise data model comprises a charging current and a temperature rise value corresponding to the target working voltage value of the battery;

With reference to the second implementation manner of the fifth aspect of the present invention, in a third implementation manner of the fifth aspect of the present invention, the processor specifically executes the following steps:

With reference to the third implementation manner of the fifth aspect of the present invention, in a fourth implementation manner of the fifth aspect of the present invention, the processor specifically executes the following steps:

With reference to the second, third or fourth embodiments of the fifth aspect of the present invention, in a fifth embodiment of the fifth aspect of the present invention, the processor specifically executes the following steps:

With reference to the second, third or fourth implementation manners of the fifth aspect of the present invention, in a sixth implementation manner of the fifth aspect of the present invention, the processor specifically executes the following steps:

A sixth aspect of the present invention provides a mobile terminal, including: the charging device comprises a processor, a charging chip and a memory;

the charging chip executes the following steps:

reading the voltage of an input end and the voltage of an output end of the charger under different charging currents within a preset current range;

setting a charging current of the battery to a target charging current determined by the processor;

the processor performs the steps of:

calculating heat loss values corresponding to the charging currents according to the input end voltage and the output end voltage read by the charging chip under different charging currents;

the memory performs the steps of: and storing the heat loss value corresponding to each charging current calculated by the processor.

With reference to the sixth aspect of the present invention, in a first implementation manner of the sixth aspect of the present invention, the processor specifically executes the following steps:

With reference to the sixth aspect of the present invention, in a second implementation manner of the sixth aspect of the present invention, the processor specifically executes the following steps:

determining a minimum heat loss of the heat loss values;

A seventh aspect of the present invention provides a mobile terminal, including: one or more processors, memory, and one or more programs stored in the memory and configured for execution by the one or more processors, the one or more programs including instructions for performing the method according to any one of the embodiments of the first aspect through the sixth aspect.

According to the technical scheme, the embodiment of the invention has the following advantages:

the mobile terminal in the embodiment of the invention can obtain the temperature rise data model, obtain the target working voltage value of the battery, and determine the target charging current corresponding to the temperature rise value meeting the preset condition according to the target working voltage value and the temperature rise data model. That is to say, the mobile terminal can select the optimal charging current with the temperature rise value meeting the preset conditions under the current battery working voltage according to the relationship between the temperature rise value and the charging current in the temperature rise data model, thereby avoiding the potential safety hazard caused by the fact that the partial pressure is too high and the temperature rise of the mobile phone is aggravated due to the reduction of the charging current.

Drawings

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

FIG. 1 is one embodiment of a charging method in an embodiment of the present invention;

FIG. 2 is another embodiment of a charging method in accordance with an embodiment of the present invention;

FIG. 3 is another embodiment of a charging method in accordance with an embodiment of the present invention;

FIG. 4 is another embodiment of a charging method in accordance with embodiments of the present invention;

FIG. 5 is another embodiment of a charging method in accordance with embodiments of the present invention;

FIG. 6 is an embodiment of a mobile terminal in an embodiment of the present invention;

fig. 7 is another embodiment of a mobile terminal in an embodiment of the present invention;

fig. 8 is another embodiment of a mobile terminal in an embodiment of the present invention;

fig. 9 is another embodiment of a mobile terminal in an embodiment of the present invention;

fig. 10 is another embodiment of a mobile terminal in an embodiment of the present invention;

fig. 11 is another embodiment of the mobile terminal in the embodiment of the present invention.

Detailed Description

The embodiment of the invention provides a charging method, which is used for selecting the optimal charging current with the temperature rise value meeting the preset condition under the current battery working voltage, and avoiding potential safety hazards caused by overhigh voltage division and aggravated temperature rise of a mobile phone due to reduction of the charging current.

Referring to fig. 1, an embodiment of a charging method according to an embodiment of the present invention includes:

101. acquiring a temperature rise data model;

the mobile terminal obtains a temperature rise data model, wherein the temperature rise data model comprises a corresponding relation among a temperature rise value of the charging chip, charging current and working voltage of the battery. The working voltage of the battery refers to the potential difference between the anode and the cathode of the battery when current flows in a circuit in the charging process. It should be noted that the temperature rise data model is obtained by a processor in the mobile terminal.

102. Acquiring a target working voltage value of the battery;

after the mobile terminal is connected to the battery, when the mobile terminal receives an instruction that the surface temperature of the charging chip needs to be lowered, the mobile terminal obtains a target operating voltage value of the battery, where it should be noted that the target operating voltage value is detected by a voltage detection circuit in the mobile terminal, and the voltage detection circuit may be integrated in the charging chip of the mobile terminal or in another chip of the mobile terminal. It should be further noted that the instruction to decrease the surface temperature of the charging chip may be triggered by an excessively high temperature of the charging chip during the charging process, or may be triggered by other conditions, which is not limited herein.

103. Determining a target charging current corresponding to a temperature rise value meeting preset conditions according to the target working voltage value and the temperature rise data model of the battery;

after the voltage detection circuit detects a target working voltage value, the processor obtains the target working voltage value, and determines a target charging current corresponding to a temperature rise value meeting a preset condition according to the target working voltage value and the temperature rise data model. It should be noted that the temperature increase value is an increase value of the surface temperature of the charging chip within a preset time, and the temperature increase value meeting preset conditions is set by a user, for example: the temperature rise value satisfying the preset condition may be set such that the surface temperature of the charging chip rises by no more than 4 degrees celsius within a half hour.

104. The charging current of the battery is set as a target charging current.

After the processor in the mobile terminal determines the target charging current, the mobile terminal sets the charging current as the target charging current through a charging control circuit in the charging chip, so that the charger charges the battery with the target charging current.

The mobile terminal in the embodiment of the invention can obtain the temperature rise data model, obtain the target working voltage value of the battery, and determine the target charging current corresponding to the temperature rise value meeting the preset condition according to the target working voltage value and the temperature rise data model. That is to say, the mobile terminal can select the optimal charging current corresponding to the temperature rise value meeting the preset conditions under the current battery working voltage according to the relationship between the temperature rise value and the charging current in the temperature rise data model, thereby avoiding the potential safety hazard caused by overhigh voltage division and aggravated temperature rise of the mobile phone due to reduction of the charging current.

For convenience of understanding, a detailed description is provided below of a specific manner in which the mobile terminal obtains the temperature rise data model in the charging method according to the embodiment of the present invention, with reference to fig. 2, another embodiment of the charging method according to the embodiment of the present invention includes:

201. the mobile terminal determines the working voltage value of the analog battery, adjusts the charging current gears and records the temperature rise value corresponding to each charging current gear;

the analog battery is connected with the mobile terminal, the analog battery is placed in an incubator, the room temperature is constant, and a charging current gear of a charging chip in the mobile terminal is set, wherein the interval and the number of the gears of the charging current gear are not limited, for example, five gears can be set to be 100 milliamperes, 200 milliamperes, 300 milliamperes, 400 milliamperes and 500 milliamperes respectively, and other current gears can also be set. The analog battery is a set of circuits simulating a mobile phone battery, can completely simulate a real mobile phone battery, can be charged or discharged, and can be set at will.

The working voltage of the analog battery is constant to a certain working voltage value by the programmable power supply, the working voltage value of the analog battery is determined by the mobile terminal through the voltage detection circuit, the charging current gear is adjusted through the charging control circuit in the charging chip, the corresponding temperature rise value under each charging current gear is recorded through the memory, the temperature rise value is the rise value of the surface temperature of the charging chip within the preset time, the temperature rise value can be detected through the temperature detection circuit in the mobile terminal and can also be detected through other equipment such as a temperature detector, the preset time can be half an hour and can also be other times, and the specific point is not limited here.

202. The mobile terminal generates a temperature rise data model corresponding to the constant voltage value according to each charging current gear and the temperature rise value;

and the mobile terminal generates a temperature rise data model corresponding to the working voltage value according to each set charging current gear and the corresponding temperature rise value.

It should be noted that the programmable power supply can adjust the working voltage value of the analog battery, and when the programmable power supply sets one working voltage value, the mobile terminal repeatedly executes steps 201 to 202 to obtain the temperature rise data model corresponding to the working voltage value. The program control power supply firstly keeps the working voltage value of the simulation battery constant at 4.3V, increases 0.05V each time until the working voltage value reaches 4.35V, and then temperature rise data models corresponding to the working voltage values of the battery, namely 3.4V, 3.45V, 3.5V, 3.55V … … 4.3.3V and 4.35V can be obtained, and each temperature rise data model comprises the temperature rise value of the chip surface corresponding to each charging current gear under the working voltage value.

203. The mobile terminal acquires a target working voltage value of the battery;

after the mobile terminal is connected to the battery, when the mobile terminal receives an instruction that the surface temperature of the charging chip needs to be lowered, the mobile terminal obtains a target operating voltage value of the battery, where it should be noted that the target operating voltage value is detected by a voltage detection circuit in the mobile terminal, and the voltage detection circuit may be integrated in the charging chip of the mobile terminal or in other charging chips of the mobile terminal. It should be noted that the instruction to decrease the surface temperature of the charging chip may be triggered by an excessively high temperature of the charging chip during the charging process, or may be triggered by other conditions, and is not limited herein.

204. Determining a target charging current corresponding to a temperature rise value meeting preset conditions according to the target working voltage value and the temperature rise data model of the battery;

after the mobile terminal obtains the target working voltage value, the processor obtains the target working voltage value, and determines the target charging current corresponding to the temperature rise value meeting the preset conditions according to the target working voltage value and the temperature rise data model.

205. The mobile terminal sets a charging current of the battery as a target charging current.

Secondly, the embodiment of the invention provides a specific way for the mobile terminal to acquire the temperature rise data model, thereby improving the realizability of the scheme.

In the above embodiment, a specific manner of obtaining the temperature rise data model by the mobile terminal is described, and a specific manner of determining the target charging current by the mobile terminal is described below, referring to fig. 3, another embodiment of the charging method in the embodiment of the present invention includes:

301. the mobile terminal obtains a temperature rise data model;

the mobile terminal obtains a temperature rise data model, wherein the temperature rise data model comprises a corresponding relation among a temperature rise value of the charging chip, charging current and working voltage of the battery. The working voltage of the battery refers to the potential difference between the anode and the cathode of the battery when current flows in a circuit in the charging process. It should be noted that the temperature rise data model is obtained by a processor in the mobile terminal, and may be established by the processor, or may be received by the processor from other devices, which is not limited herein. The processor may be established in the manner from step 201 to step 202 in the embodiment corresponding to fig. 2, or may be established in other manners, which is not limited herein.

302. The mobile terminal acquires a target working voltage value of the battery;

the process of the mobile terminal obtaining the target working voltage value of the battery is similar to step 203 in the embodiment corresponding to fig. 2, and details are not repeated here.

303. The mobile terminal calculates a target temperature rise data model corresponding to the target working voltage value of the battery according to the temperature rise data model;

and the mobile terminal calculates a target temperature rise data model corresponding to the target working voltage value according to the temperature rise data model, wherein the target temperature rise data model comprises a charging current and a temperature rise value corresponding to the target voltage value. It should be noted that the target temperature rise data model is calculated by a processor in the mobile terminal, and the temperature rise data model may include the target temperature rise data model or may not include the target temperature rise data model, which is specifically determined by a relationship between a target operating voltage value and an operating voltage in the temperature rise data model.

304. The mobile terminal selects a target charging current corresponding to a temperature rise value meeting preset conditions according to the target temperature rise data model;

and after the mobile terminal calculates and obtains a target temperature rise data model, selecting a target charging current corresponding to the temperature rise value meeting the preset condition according to the target temperature rise data model. It should be noted that the target charging current is determined by a processor in the mobile terminal, and the temperature increase value of the preset condition is set by the user.

Specifically, the target charging current corresponding to the temperature increase value satisfying the preset condition may be selected as follows:

firstly, selecting the maximum charging current which is less than the preset temperature rise value.

1. The mobile terminal determines an alternative temperature rise value which is smaller than a preset temperature rise value in the temperature rise values of the target temperature rise data model;

2. the mobile terminal determines alternative charging current corresponding to the alternative temperature rise value;

3. the mobile terminal takes the maximum charging current in the alternative charging currents as the target charging current.

It should be noted that, for the target temperature rise data model, the temperature rise value is equal to the preset temperature rise value, and may be used as the alternative temperature rise value, or may not be used as the alternative temperature rise value, and the specific details are not limited herein. For the target temperature rise data model in which the temperature rise value is greater than the preset temperature rise value, the temperature rise value may be used as the alternative temperature rise value, or may not be used as the alternative temperature rise value, and the specific details are not limited herein.

And secondly, selecting the maximum charging current with the minimum temperature rise value.

1. The mobile terminal determines the minimum value of the temperature rise values of the target temperature rise data model;

2. taking the charging current corresponding to the minimum value as an alternative charging current;

3. and taking the maximum charging current in the alternative charging currents as the target charging current.

It should be noted that, in addition to the above two manners, the mobile terminal may select the target charging current corresponding to the temperature increase value that satisfies the preset condition through other manners.

305. The mobile terminal sets a charging current of the battery as a target charging current.

The process of setting the target charging current for the mobile terminal is similar to step 205 in the embodiment corresponding to fig. 2, and details thereof are not repeated here.

In the embodiment of the invention, the mobile terminal can obtain the temperature rise data model, obtain the target working voltage value of the battery, and determine the target charging current corresponding to the temperature rise value meeting the preset conditions according to the target working voltage value and the temperature rise data model. That is to say, the mobile terminal can select the optimal charging current with the temperature rise value meeting the preset conditions under the current battery working voltage according to the relationship between the temperature rise value and the charging current in the temperature rise data model, thereby avoiding the potential safety hazard caused by the fact that the partial pressure is too high and the temperature rise of the mobile phone is aggravated due to the reduction of the charging current.

Secondly, in the embodiment of the invention, the mobile terminal can calculate the target temperature rise data model corresponding to the target working voltage value, and then select the target charging current through the target temperature rise data model, so that a specific mode for determining the target charging current by the mobile terminal is provided, and the realizability of the scheme is improved.

In the embodiment of the invention, the mobile terminal can select the target charging current from the target temperature rise data model in multiple modes, so that the flexibility of the scheme is improved.

In the above embodiment, the mobile terminal determines the target charging current through the target temperature rise data model, and the following describes in detail a specific manner of calculating the target temperature rise data model by the mobile terminal, referring to fig. 4, another embodiment of the charging method in the embodiment of the present invention includes:

401. the mobile terminal obtains a temperature rise data model;

the process of acquiring the temperature rise data model by the mobile terminal is similar to step 301 in the embodiment corresponding to fig. 3, and details are not repeated here.

402. The mobile terminal acquires a target working voltage value of the battery;

the process of obtaining the target working voltage value by the mobile terminal is similar to step 203 in the embodiment corresponding to fig. 2, and details are not repeated here.

403. The mobile terminal judges whether the working voltage in the temperature rise data model contains a target working voltage value, if so, the step 404 is executed, and if not, the step 405 is executed;

after determining the target operating voltage value of the battery, the mobile terminal determines whether the operating voltage in the temperature rise data model includes the target operating voltage value, if so, step 304 is executed, and if not, step 305 is executed.

404. The mobile terminal takes a temperature rise data model corresponding to the target working voltage value in the temperature rise data model as a target temperature rise data model, and executes step 406;

when the mobile terminal determines that the working voltage in the temperature rise data model includes the target working voltage value, the mobile terminal takes the temperature rise data model corresponding to the target working voltage value in the temperature rise data model as the target temperature rise data model, and executes step 406.

405. The mobile terminal determines a target temperature rise data model according to a temperature rise data model corresponding to a working voltage value of which the difference value with the target working voltage value meets a preset condition in the temperature rise data model, and executes step 406;

when the mobile terminal determines that the working voltage in the temperature rise data model does not include the target working voltage value, the mobile terminal determines a target temperature rise data model according to the temperature rise data model corresponding to the working voltage value of which the difference value between the target working voltage and the target working voltage satisfies the preset condition in the temperature rise data model, and executes step 406.

It should be noted that, the mobile terminal may determine the target temperature rise data model according to the temperature rise data model corresponding to the working voltage value whose target working voltage difference satisfies the preset condition in the following manner:

(1) the mobile terminal determines a first working voltage value and a second working voltage value which have the minimum difference value with the target working voltage value in the temperature rise data model;

and the mobile terminal searches the working voltage in the temperature rise data model, and determines two working voltage values with the minimum difference between the numerical value and the target working voltage value, namely a first working voltage value and a second working voltage value. For example, the operating voltages in the temperature rise data model include 3.4, 3.45, 3.5, 3.55 and 3.6, and if the target operating voltage value is 3.43, the first and second operating voltage values are 3.4 and 3.45.

(2) The mobile terminal determines a first temperature rise data model corresponding to the first working voltage value and a second temperature rise data model corresponding to the second working voltage value;

after the mobile terminal determines the first working voltage value and the second working voltage value, a first temperature rise data model corresponding to the first working voltage value and a second temperature rise data model corresponding to the second working voltage value are determined.

(3) The mobile terminal linearly calculates according to the first temperature rise data model and the second temperature rise data model to obtain a target working voltage value and a target temperature rise value corresponding to each charging current gear;

the mobile terminal linearly calculates according to the first temperature rise data model and the second temperature rise data model to obtain a target working voltage value and a target temperature rise value corresponding to each charging current gear, and the specific calculation process is as follows:

determining a first temperature rise value corresponding to the first working voltage value and a second temperature rise value corresponding to the second working voltage value under the target charging current gear;

determining a first coordinate point (x)₁，y₁) And a second coordinate point (x)₂，y₂) Wherein the abscissa x of the first coordinate point₁Is a first operating voltage value, ordinate y₁The abscissa x of the second coordinate point is the first temperature rise value₂Is a second operating voltage value, ordinate y₂A second temperature rise value;

the first coordinate point (x)₁，y₁) And a second coordinate point (x)₂，y₂) Substituting to solve a linear equation of two-dimensional y as kx + b;

taking the target working voltage value as an abscissa, and solving a corresponding ordinate value according to the linear equation of two-dimentional system, wherein the ordinate value is a temperature rise value corresponding to a target charging current gear;

(4) and the mobile terminal generates a target temperature rise data model according to each charging current gear and the target temperature rise value.

And (3) the mobile terminal calculates a target temperature rise value corresponding to each charging current gear according to the steps (1) to (3), and then generates a target temperature rise data model according to each charging current gear and the target temperature rise value.

It should be noted that, in addition to the above manner, the mobile terminal may determine the target temperature rise data model according to the working voltage value whose difference from the target working voltage value meets the preset condition through other manners, which is not limited herein.

406. The mobile terminal selects a target charging current corresponding to a temperature rise value meeting preset conditions according to the target temperature rise data model;

the process of selecting the target charging current by the mobile terminal in the embodiment of the present invention is similar to the process of selecting the target charging current by the mobile terminal in step 304 in the embodiment corresponding to fig. 3, and details are not repeated here.

407. The mobile terminal sets a charging current of the battery as a target charging current.

Secondly, in the embodiment of the invention, the mobile terminal can calculate the target temperature rise data model corresponding to the target working voltage value according to various modes, and can select the target charging current according to the target temperature rise data model through various modes, so that the flexibility of the scheme is improved.

In the above description, the mobile terminal determines the charging method of the optimal charging current based on the relationship model, and for some mobile terminals whose hardware supports reading the voltage at the input and output terminals of the chip, another charging method may be adopted, please refer to fig. 5, in which another embodiment of the charging method in the embodiment of the present invention includes:

501. the mobile terminal adjusts the charging current of the battery within a preset current range, and reads the input end voltage and the output end voltage of the charging chip under different charging currents;

the battery is placed in the mobile terminal, and when the battery needs to be charged, the mobile terminal is connected with the charger. The mobile terminal adjusts the charging current of the battery within a preset current range through a charging control circuit in the charging chip, and reads the input end voltage and the output end voltage of the charging chip under different charging currents.

502. The mobile terminal calculates the heat loss value corresponding to each charging current according to the input end voltage and the output end voltage;

after the mobile terminal reads the input end voltage and the output end voltage corresponding to each charging current, the processor acquires the input end voltage and the output end voltage, and calculates the heat loss value corresponding to each charging current according to the input end voltage and the output end voltage, specifically, the heat loss value is approximately equal to the charging current I of the charging chip multiplied by the partial pressure delta U, namely the input end voltage V₁Voltage minus output voltage V₂That is, the thermal loss Q ═ Δ U ═ I ═ (V ═ U ═ I ═ V₁-V₂)*I。

503, the mobile terminal determines a target charging current corresponding to the heat loss value meeting the preset condition in each heat loss value;

after the mobile terminal calculates the heat loss values corresponding to the charging currents, the processor determines the target charging current corresponding to the heat loss value which meets the preset condition in the heat loss values.

504. The mobile terminal sets a charging current of the battery as a target charging current.

After the processor in the mobile terminal determines the target charging current, the charging current is set as the target charging current through the charging control circuit in the charging chip, so that the battery is charged with the target charging current.

In the embodiment of the invention, the mobile terminal can read the input end voltage and the output end voltage of the charging chip, calculate the heat loss value corresponding to each charging current according to the input end voltage and the output end voltage, and then determine the target charging current corresponding to the heat loss value meeting the preset conditions. That is to say, the mobile terminal can determine the heat loss values corresponding to different charging currents, and select the optimal charging current with the heat loss value meeting the preset conditions, so that the potential safety hazard caused by overhigh voltage division and aggravated temperature rise of the mobile phone due to reduction of the charging current is avoided.

Based on the above embodiment corresponding to fig. 5, in another embodiment of the charging method in the embodiment of the present invention, the mobile terminal may determine the target charging current corresponding to the heat loss value satisfying the preset condition in the heat loss values in the following manners, for example:

first, a maximum charging current less than a preset heat loss.

1. The mobile terminal determines an alternative heat loss value smaller than a preset heat loss value in the heat loss value;

2. the mobile terminal determines alternative charging current corresponding to the alternative heat loss value;

It should be noted that the heat loss value is equal to the preset heat loss value, may be used as an alternative heat loss value, and may not be used as an alternative heat loss value, and is not limited herein. The heat loss value greater than the preset heat loss value may be used as an alternative heat loss value, or may not be used as an alternative heat loss value, which is not limited herein.

And secondly, the maximum charging current with the minimum heat loss value.

1. The mobile terminal determines the minimum heat loss in the heat loss values;

2. the mobile terminal determines an alternative charging current corresponding to the minimum heat loss;

In the embodiment of the invention, the mobile terminal can determine the target charging current in various ways, so that the flexibility of the scheme is improved.

For convenience of understanding, the charging method in the embodiment of the present invention is described in detail in a practical application scenario as follows:

firstly, a mobile phone, a program-controlled power supply, a simulation battery, a temperature detector and an incubator are prepared. The programmable power supply can control the working voltage of the analog battery and provide power for charging the battery, and a charging chip in the mobile phone integrates a charging control circuit and a voltage detection circuit. The following steps are then performed:

(1) connecting a mobile phone with a simulated battery, and placing the mobile phone into an incubator at a constant temperature of 25 ℃;

(2) the program control power supply controls the working voltage of the analog battery to be constant at 3.4V;

(3) setting charging current as 5 gears, namely 100 milliamperes, 200 milliamperes, 300 milliamperes, 400 milliamperes and 500 milliamperes;

(4) the mobile phone adjusts the charging current to 100 milliamperes through a charging control circuit of the charging chip;

(5) after the temperature is continuously measured for half an hour, the temperature rise value of the surface of the charging chip is measured through a temperature detector, and a memory in the mobile phone records the temperature rise value;

(6) increasing the charging current by one gear, and repeatedly executing the step (5) until 5 current gears are recorded;

(7) the program-controlled power supply increases the working voltage of the analog battery by 0.05V;

and (5) repeatedly executing the steps (4) to (7) until the working voltage reaches 3.85 volts.

Through the test, the processor generates a temperature rise data model shown in table 1 according to the working voltage value, the charging current gear and the temperature rise value recorded by the memory, wherein the temperature rise value in the table is in centigrade.

TABLE 1

And after the processor establishes the temperature rise data model, the mobile phone is taken out, a mobile phone battery is placed in the mobile phone, and the mobile phone is connected with the charger. The charger charges the mobile phone battery with 500 milliamperes of current, after half a time, the whole temperature of the mobile phone is raised by 6 ℃ due to a large amount of heat generated by the charging chip, and at the moment, the processor in the mobile terminal sends a cooling command to reduce the temperature rise value of the charging chip and lower the temperature rise value of the charging chip to be lower than 4 ℃.

The mobile terminal detects that the working voltage of the battery is 3.43 volts at the moment, the mobile terminal searches the working voltage in the table 1 to determine that the working voltage does not contain 3.43 volts, determines that a first working voltage value and a second working voltage value which have the minimum difference value with the 3.43 volts in the table 1 are 3.4 volts and 3.45 volts respectively, determines that the first working voltage value 3.43 volts corresponds to a first temperature rise data model and a second temperature rise data model corresponding to a second working voltage value of 3.45 volts, linearly calculates temperature rise data under each charging current gear corresponding to the 3.43 volts according to the first temperature rise data model and the second temperature rise data model, takes the charging current gear as 100 milliamperes, the temperature rise value corresponding to the 3.4 volt working voltage is 5 degrees centigrade, the temperature rise value corresponding to the 3.45 volt working voltage is 4 degrees centigrade, the working voltage is taken as an abscissa, and the temperature rise value is taken as an ordinate, the temperature rise value corresponding to the abscissa of 3.43 v is calculated, that is, two coordinate points (3.4, 5) and (3.45, 4) are substituted into a linear equation of two, y ═ kx + b, to obtain k ═ 20, b ═ 73, that is, y ═ 20x +73, and x ═ 3.43 is substituted to obtain y ═ 4.4, that is, the operating voltage is 3.43 v, the charging current is 100 ma, and the corresponding temperature rise value is 4.4 degrees celsius. According to the method, the temperature rise values corresponding to the charging current gears when the working voltage is 3.43 v are calculated, and the temperature rise values in the table are all in centigrade as shown in table 2.

TABLE 2

According to the calculated target temperature rise data model corresponding to 3.43 volts in the table, the alternative temperature rise values of the model, the temperature rise values of which are lower than 4 ℃, are 3.6 ℃ and 2.6 ℃, the corresponding alternative charging currents are 300 milliamperes and 400 milliamperes, the maximum charging current is selected from the alternative charging currents as the target charging current, namely 400 milliamperes, the charging current of the mobile phone battery is set to 400 milliamperes by the mobile terminal, the charging current is adjusted to 400 milliamperes by a control chip in the charging chip, and therefore the mobile phone battery is charged by the charger at 400 milliamperes.

With reference to fig. 6, a mobile terminal according to an embodiment of the present invention is described below, where the charging method according to an embodiment of the present invention is described above, and an embodiment of the mobile terminal according to an embodiment of the present invention includes:

the first obtaining module 601 is configured to obtain a temperature rise data model, where the temperature rise data model includes a correspondence between a temperature rise value of the charging chip, a charging current, and a working voltage of the battery;

a second obtaining module 602, configured to obtain a target working voltage value of the battery, where the target working voltage value is a current working voltage value of the battery;

a determining module 603, configured to determine, according to the target working voltage value obtained by the second obtaining module 602 and the temperature rise data model obtained by the first obtaining module 601, a target charging current corresponding to the temperature rise value that meets a preset condition;

a setting module 604 for setting the charging current of the battery to the target charging current determined by the determining module 603.

In the embodiment of the present invention, the first obtaining module 601 may obtain the temperature rise data model, the second obtaining module 602 may obtain the target working voltage value of the battery, and the determining module 603 may determine the target charging current corresponding to the temperature rise value that meets the preset condition according to the target working voltage value and the temperature rise data model. That is to say, the mobile terminal can select the optimal charging current with the temperature rise value meeting the preset conditions under the current battery working voltage according to the relationship between the temperature rise value and the charging current in the temperature rise data model, thereby avoiding the potential safety hazard caused by the fact that the partial pressure is too high and the temperature rise of the mobile phone is aggravated due to the reduction of the charging current.

For convenience of understanding, the following describes the mobile terminal in the embodiment of the present invention in detail, and with reference to fig. 7, another embodiment of the mobile terminal in the embodiment of the present invention includes:

the first obtaining module 701 is configured to obtain a temperature rise data model, where the temperature rise data model includes a correspondence between a temperature rise value of a charging chip, a charging current, and a working voltage of a battery;

a second obtaining module 702, configured to obtain a target working voltage value of the battery, where the target working voltage value is a current working voltage value of the battery;

a determining module 703, configured to determine, according to the target working voltage value obtained by the second obtaining module 702 and the temperature rise data model obtained by the second obtaining module 701, a target charging current corresponding to the temperature rise value meeting a preset condition;

a setting module 704, configured to set the charging current of the battery to the target charging current determined by the determining module 703.

In this embodiment of the present invention, the first obtaining module 701 includes:

the control submodule 7011 is configured to determine a working voltage value of the battery, adjust charging current gears, and record a temperature increase value corresponding to each charging current gear, where the temperature increase value is an increase value of the surface temperature of the charging chip within a preset time;

and the generation submodule 7012 is configured to generate a temperature rise data model corresponding to the constant voltage value according to each charging current gear and the temperature rise value recorded by the control submodule 7011.

In the embodiment of the present invention, the first obtaining module 701 may obtain a temperature rise data model, the second obtaining module 702 may obtain a target working voltage value of the battery, and the determining module 703 may determine, according to the target working voltage value and the temperature rise data model, a target charging current corresponding to a temperature rise value that meets a preset condition. That is to say, the mobile terminal can select the optimal charging current with the temperature rise value meeting the preset conditions under the current battery working voltage according to the relationship between the temperature rise value and the charging current in the temperature rise data model, thereby avoiding the potential safety hazard caused by the fact that the partial pressure is too high and the temperature rise of the mobile phone is aggravated due to the reduction of the charging current.

Secondly, the embodiment of the invention provides a specific way for the first obtaining module 701 to obtain the temperature rise data model, thereby improving the realizability of the scheme.

Referring to fig. 8, another embodiment of the mobile terminal according to the embodiment of the present invention includes:

the first obtaining module 801 is configured to obtain a temperature rise data model, where the temperature rise data model includes a correspondence between a temperature rise value of the charging chip, a charging current, and a working voltage of the battery;

a second obtaining module 802, configured to obtain a target working voltage value of the battery, where the target working voltage value is a current working voltage value of the battery;

a determining module 803, configured to determine, according to the target working voltage value obtained by the second obtaining module 802 and the temperature rise data model obtained by the first obtaining module 801, a target charging current corresponding to the temperature rise value that meets the preset condition;

a setting module 805, configured to set the charging current of the battery to the target charging current determined by the determining module 803.

In this embodiment of the present invention, the determining module 803 includes:

the calculating submodule 8031 is used for calculating a target temperature rise data model corresponding to the target working voltage value according to the temperature rise data model;

the selection submodule 8032 is used for selecting a target charging current corresponding to a temperature rise value meeting a preset condition according to the target temperature rise data model;

optionally, the calculation submodule 8031 includes:

a judging unit 80311, configured to judge whether the working voltage in the temperature rise data model acquired by the first acquiring module 801 includes the target working voltage value acquired by the second acquiring module 802;

the first determining unit 80312 is configured to, when the determining unit 80311 determines that the working voltage includes the target working voltage value, take the temperature rise data model corresponding to the target working voltage value in the temperature rise data model as the target temperature rise data model;

a second determining unit 80313, configured to determine, when the determining unit 80311 determines that the working voltage does not include the target working voltage value, the target temperature rise data model according to the temperature rise data model corresponding to the working voltage value whose difference value with the target working voltage value satisfies the preset condition in the temperature rise data model;

alternatively, the second determination unit 80313 may include:

a first determining subunit 803131, configured to determine a first operating voltage value and a second operating voltage value in the temperature rise data model, where the difference between the first operating voltage value and the target operating voltage value is minimum;

a second determining subunit 803132, configured to determine a first temperature-rise data model corresponding to the first operating voltage value and a second temperature-rise data model corresponding to the second operating voltage value, which are determined by the first determining subunit 803131;

the calculating subunit 803133 is configured to obtain a target working voltage value and a target temperature increase value corresponding to each charging current gear by linear calculation according to the first temperature increase data model and the second temperature increase data model determined by the second determining subunit 803132;

the generating subunit 803134 is configured to generate a target temperature rise data model according to each charging current notch and the target temperature rise value obtained by the calculating subunit 70333.

Optionally, the selection module 8032 includes:

a third determining unit 80321, configured to determine an alternative temperature increase value smaller than the preset temperature increase value in the temperature increase values of the target temperature increase data model;

a fourth determination unit 80322, configured to determine an alternative charging current corresponding to the alternative temperature increase value;

a fifth determining unit 80323 for determining 80322 the maximum charging current of the alternative charging currents as the target charging current.

Or the like, or, alternatively,

a sixth determining unit 80324, configured to determine the minimum of the temperature rise values of the target temperature rise data model;

a seventh determining unit 80325, configured to determine an alternative charging current corresponding to the minimum value determined by the sixth determining unit 80324;

an eighth determining unit 80326 for setting the maximum charging current among the alternative charging currents determined by the seventh determining unit 80325 as the target charging current.

In the embodiment of the present invention, the first obtaining module 801 may obtain a temperature rise data model, the second obtaining module 802 may obtain a target working voltage value of the battery, and the determining module 803 may determine a target charging current corresponding to a temperature rise value that meets a preset condition according to the target working voltage value and the temperature rise data model. That is to say, the mobile terminal can select the optimal charging current with the temperature rise value meeting the preset conditions under the current battery working voltage according to the relationship between the temperature rise value and the charging current in the temperature rise data model, thereby avoiding the potential safety hazard caused by the fact that the partial pressure is too high and the temperature rise of the mobile phone is aggravated due to the reduction of the charging current.

Secondly, in the embodiment of the present invention, the determining module 803 may determine the target charging current according to a plurality of ways, so as to improve the flexibility of the scheme.

For convenience of understanding, the following describes in detail the interaction between modules of the mobile terminal in the embodiment of the present invention in a specific application scenario:

the first obtaining module 801 obtains a temperature rise data model, where the temperature rise data model includes a corresponding relationship between a temperature rise value of the charging chip, a charging current, and a working voltage of the battery. The working voltage of the battery refers to the potential difference between the anode and the cathode of the battery when current flows in a circuit in the charging process. Specifically, the first obtaining module 801 obtains the temperature rise data model by:

the analog battery is connected with the mobile terminal, the analog battery is placed in an incubator, the room temperature is constant, and a charging current gear of a charging chip in the mobile terminal is set, wherein the interval and the number of the gears of the charging current gear are not limited, for example, five gears can be set to be 100 milliamperes, 200 milliamperes, 300 milliamperes, 400 milliamperes and 500 milliamperes respectively, and other current gears can also be set.

The working voltage of the analog battery is constant to a certain working voltage value by the program control power supply, the working voltage value of the analog battery is determined by the voltage detection circuit, the charging current gear is adjusted by the charging control circuit in the charging chip, the corresponding temperature rise value under each charging current gear is recorded by the memory, the temperature rise value is the rise value of the surface temperature of the charging chip within the preset time, the temperature rise value can be detected by the temperature detection circuit in the mobile terminal and can also be detected by other equipment such as a temperature detector, the preset time can be half an hour and can also be other times, and the specific point is not limited here.

The first obtaining module 801 generates a temperature rise data model corresponding to the working voltage value according to each set charging current gear and the corresponding temperature rise value.

After the first obtaining module 801 obtains the temperature rise data model, the mobile terminal is connected to the battery, and when the battery needs to be charged, the mobile terminal is connected to the charger. When the mobile terminal receives an instruction that the surface temperature of the charging chip needs to be lowered, the second obtaining module 802 obtains a target operating voltage value of the battery, where the target operating voltage value is detected by a voltage detection circuit in the mobile terminal, and the voltage detection circuit may be integrated in the charging chip of the mobile terminal or may not be integrated in the charging chip. It should be noted that the instruction to decrease the surface temperature of the charging chip may be triggered by an excessively high temperature of the charging chip, or may be triggered by other conditions, and is not limited herein.

After the second obtaining module 802 determines the target working voltage value of the battery, the determining unit 80311 in the calculating submodule 8031 determines whether the working voltage in the temperature rise data model includes the target working voltage value, if yes, the first determining unit 80312 is triggered, and if not, the second determining unit 80313 is triggered.

When the determining unit 80311 determines that the working voltage in the temperature rise data model includes the target working voltage value, the first determining unit 80312 takes the temperature rise data model corresponding to the target working voltage value in the temperature rise data model as the target temperature rise data model.

When the judging unit 80311 determines that the working voltage in the temperature rise data model does not include the target working voltage value, the second determining unit 80313 determines the target temperature rise data model according to the temperature rise data model corresponding to the working voltage value whose difference value between the target working voltage and the target working voltage satisfies the preset condition.

It should be noted that, according to the temperature rise data model corresponding to the operating voltage value whose target operating voltage difference satisfies the preset condition, the second determining unit 80313 may determine the target temperature rise data model in the following manner:

the first determining subunit 803131 finds the working voltage in the temperature rise data model, and determines two working voltage values with the smallest difference between the two values and the target working voltage value, which are the first working voltage value and the second working voltage value, respectively. For example, the operating voltages in the temperature rise data model include 3.4, 3.45, 3.5, 3.55 and 3.6, and if the target operating voltage value is 3.43, the first and second operating voltage values are 3.4 and 3.45.

After the first determining subunit 803132 determines the first operating voltage value and the second operating voltage value, the second determining subunit 803131 determines a first temperature-rise data model corresponding to the first operating voltage value and a second temperature-rise data model corresponding to the second operating voltage value.

The calculating subunit 803133 obtains a target operating voltage value and a target temperature increase value corresponding to each charging current gear by linear calculation according to the first temperature increase data model and the second temperature increase data model, and the specific calculation process is as follows:

determining a first coordinate point and a second coordinate point, wherein the abscissa of the first coordinate point is a first working voltage value, the ordinate is a first temperature rise value, the abscissa of the second coordinate point is a second working voltage value, and the total coordinate is a second temperature rise value;

substituting the first coordinate point and the second coordinate point into a solution of a linear equation of two-dimensional (y ═ kx + b);

after the target temperature rise value corresponding to each charging current gear is obtained according to the calculating subunit 803133, the generating subunit 803134 generates a target temperature rise data model according to each charging current gear and the target temperature rise value.

It should be noted that, in addition to the above manner, the calculating submodule 8031 may also determine the target temperature rise data model in other manners according to the temperature rise data model corresponding to the working voltage value whose target working voltage difference value meets the preset condition, and is not limited herein.

After the calculation submodule 8031 calculates and obtains the target temperature rise data model, the selection submodule 8032 selects the target charging current corresponding to the temperature rise value satisfying the preset condition according to the target temperature rise data model. The method can be specifically realized by the following steps:

first, the maximum charging current is less than the preset temperature rise value.

1. The third determining unit 80311 determines an alternative temperature increase value smaller than the preset temperature increase value among the temperature increase values of the target temperature increase data model;

2. the fourth determination unit 80312 determines an alternative charging current corresponding to the alternative temperature increase value;

3. the fifth determination unit 80313 takes the maximum charging current of the alternative charging currents as the target charging current.

And II, the maximum charging current with the minimum temperature rise value.

1. The sixth determining unit 80314 determines the minimum value of the temperature rise values of the target temperature rise data model;

2. the seventh determining unit 80315 uses the charging current corresponding to the minimum value as the alternative charging current;

3. the eighth determination unit 80316 takes the maximum value of the candidate charging currents as the target charging current.

It should be noted that, in addition to the above two manners, the selection sub-module 8031 may also select the target charging current corresponding to the temperature increase value that satisfies the preset condition in other manners.

The setting module 804 sets the charging current of the battery to the target charging current determined by the determination module 803.

Referring to fig. 9, another embodiment of a mobile terminal according to the present invention includes:

a control module 901, configured to adjust a charging current of a battery within a preset current range, and read an input terminal voltage and an output terminal voltage of a charging chip under different charging currents;

a calculating module 902, configured to calculate a heat loss value corresponding to each charging current according to the input terminal voltage and the output terminal voltage;

a determining module 903, configured to determine a target charging current corresponding to a heat loss value that meets a preset condition in the heat loss values obtained by the calculating module 902;

a setting module 904, configured to set the charging current of the battery to the target charging current determined by the determining module 803.

In this embodiment of the present invention, the control module 901 may read an input terminal voltage and an output terminal voltage of the charging chip, the calculating module 902 calculates a heat loss value corresponding to each charging current according to the input terminal voltage and the output terminal voltage, and the determining module 903 determines a target charging current corresponding to the heat loss value satisfying a preset condition. That is to say, the mobile terminal can determine the heat loss values corresponding to different charging currents, and select the optimal charging current with the heat loss value meeting the preset conditions, so that the potential safety hazard caused by overhigh voltage division and aggravated temperature rise of the mobile phone due to reduction of the charging current is avoided.

For convenience of understanding, the following describes the mobile terminal in the embodiment of the present invention in detail, and with reference to fig. 10, another embodiment of the mobile terminal in the embodiment of the present invention includes:

the control module 1001 is used for adjusting the charging current of the battery within a preset current range and reading the input end voltage and the output end voltage of the charging chip under different charging currents;

the calculating module 1002 is configured to calculate a heat loss value corresponding to each charging current according to the input end voltage and the output end voltage;

a determining module 1003, configured to determine a target charging current corresponding to a heat loss value that meets a preset condition in the heat loss values obtained by the calculating module 1002;

a setting module 1004, configured to set the charging current of the battery to the target charging current determined by the determining module 1003.

The determining module 1003 includes:

a first determining sub-module 10031, configured to determine an alternative heat loss value smaller than the preset heat loss value in the heat loss value;

a second determining submodule 10032, configured to determine an alternative charging current corresponding to the alternative heat loss value determined by the first determining submodule 10031;

a third determining sub-module 10033, configured to use the maximum charging current of the alternative charging currents determined by the second determining unit 10032 as the target charging current;

or the like, or, alternatively,

a fourth determination sub-module 10034 for determining a minimum heat loss of the heat loss values;

a fifth determining submodule 10035, configured to determine an alternative charging current corresponding to the minimum heat loss determined by the fourth determining submodule 10034;

a sixth determining submodule 10036 is configured to use the maximum charging current of the alternative charging currents determined by the fifth determining submodule 10035 as the target charging current.

In the embodiment of the present invention, the control module 1001 may read an input terminal voltage and an output terminal voltage of the charging chip, the calculating module 1002 calculates a heat loss value corresponding to each charging current according to the input terminal voltage and the output terminal voltage, and the determining module 1003 determines a target charging current corresponding to the heat loss value satisfying a preset condition. That is to say, the mobile terminal can determine the heat loss values corresponding to different charging currents, and select the optimal charging current with the heat loss value meeting the preset conditions, so that the potential safety hazard caused by overhigh voltage division and aggravated temperature rise of the mobile phone due to reduction of the charging current is avoided.

Secondly, the determining module 1003 in the embodiment of the present invention may determine the target charging current in multiple ways, so as to improve flexibility of the scheme.

The mobile terminal in the embodiment of the present invention is described above from the perspective of a functional module, and the mobile terminal in the embodiment of the present invention is described below from the perspective of physical hardware processing, where the terminal may be a mobile terminal device including a mobile phone, a tablet computer, a PDA (Personal Digital Assistant), and the like, and the terminal is taken as an example of a mobile phone, and fig. 11 is a block diagram illustrating a partial structure of a mobile phone related to the terminal provided in the embodiment of the present invention.

Referring to fig. 11, an embodiment of a mobile terminal according to the embodiment of the present invention includes:

RF circuit 1110 may be used for receiving and transmitting signals during a message transmission or call, and in particular, for receiving downlink messages from a base station and then processing the received downlink messages to processor 1180; in addition, the data for designing uplink is transmitted to the base station. In general, RF circuit 1110 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, the RF circuitry 1110 may also communicate with networks and other devices via wireless communications. The wireless communication may use any communication standard or protocol, including but not limited to global system for Mobile communications (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), email, Short Messaging Service (SMS), and the like.

The memory 1120 may be used to store software programs and modules, and the processor 1180 may execute various functional applications and data processing of the mobile phone by operating the software programs and modules stored in the memory 1120. The memory 1120 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 1120 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The input unit 1130 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the cellular phone. Specifically, the input unit 1130 may include a touch panel 1131 and other input devices 1132. Touch panel 1131, also referred to as a touch screen, can collect touch operations of a user on or near the touch panel 1131 (for example, operations of the user on or near touch panel 1131 by using any suitable object or accessory such as a finger or a stylus pen), and drive corresponding connection devices according to a preset program. Alternatively, the touch panel 1131 may include two parts, namely, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 1180, and can receive and execute commands sent by the processor 1180. In addition, the touch panel 1131 can be implemented by using various types, such as resistive, capacitive, infrared, and surface acoustic wave. The input unit 1130 may include other input devices 1132 in addition to the touch panel 1131. In particular, other input devices 1132 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.

The display unit 1140 may be used to display information input by the user or information provided to the user and various menus of the cellular phone. The Display unit 1140 may include a Display panel 1141, and optionally, the Display panel 1141 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like. Further, the touch panel 1131 can cover the display panel 1141, and when the touch panel 1131 detects a touch operation on or near the touch panel, the touch panel is transmitted to the processor 1180 to determine the type of the touch event, and then the processor 1180 provides a corresponding visual output on the display panel 1141 according to the type of the touch event. Although in fig. 11, the touch panel 1131 and the display panel 1141 are two independent components to implement the input and output functions of the mobile phone, in some embodiments, the touch panel 1131 and the display panel 1141 may be integrated to implement the input and output functions of the mobile phone.

The handset may also include at least one sensor 1150, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display panel 1141 according to the brightness of ambient light, and the proximity sensor may turn off the display panel 1141 and/or the backlight when the mobile phone moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, further description is omitted here.

Audio circuitry 1160, speakers 1161, and microphone 1162 may provide an audio interface between a user and a cell phone. The audio circuit 1160 may transmit the electrical signal converted from the received audio data to the speaker 1161, and convert the electrical signal into a sound signal for output by the speaker 1161; on the other hand, the microphone 1162 converts the collected sound signals into electrical signals, which are received by the audio circuit 1160 and converted into audio data, which are then processed by the audio data output processor 1180, and then transmitted to, for example, another cellular phone via the RF circuit 1110, or output to the memory 1120 for further processing.

WiFi belongs to short-distance wireless transmission technology, and the cell phone can help a user to receive and send e-mails, browse webpages, access streaming media and the like through the WiFi module 1170, and provides wireless broadband internet access for the user. Although fig. 11 shows the WiFi module 1170, it is understood that it does not belong to the essential constitution of the handset, and can be omitted entirely as needed within the scope not changing the essence of the invention.

The processor 1180 is a control center of the mobile phone, and is connected to various parts of the whole mobile phone through various interfaces and lines, and executes various functions of the mobile phone and processes data by operating or executing software programs and/or modules stored in the memory 1120 and calling data stored in the memory 1120, thereby performing overall monitoring of the mobile phone. Optionally, processor 1180 may include one or more processing units; preferably, the processor 1180 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated within processor 1180.

The mobile phone further comprises a charging chip 1190, and the charging chip 1190 is logically connected with the processor 1180, so that functions of managing charging, discharging, power consumption management and the like of the mobile phone power supply are achieved. The charging control circuit 1191 is integrated in the charging chip 1190.

The mobile phone further includes a voltage detection circuit 1192, which is configured to detect an operating voltage of the battery, although in fig. 11, the voltage detection circuit 1192 is not integrated in the charging chip, it is understood that the voltage detection circuit 1192 may also be integrated in other chips, and is not limited herein.

Although not shown, the mobile phone may further include a camera, a bluetooth module, etc., which will not be described herein again

In this embodiment of the present invention, the processor 1108 included in the terminal further has the following functions:

and acquiring a temperature rise data model, and determining a target charging current corresponding to the temperature rise value meeting the preset condition according to the target working voltage value and the temperature rise data model, wherein the temperature rise data model comprises the corresponding relation among the temperature rise value of the charging chip, the charging current and the working voltage of the battery.

The voltage detection circuit 1192 performs the following steps: establishing connection with a battery to obtain the working voltage of the battery;

processor 1180 performs the following steps:

the charging control circuit 1191 performs the following steps: setting a charging current of the battery to a target charging current determined by processor 1180;

in another embodiment of the mobile terminal in the embodiment of the present invention, each hardware specifically executes the following steps:

the processor determines a simulated battery working voltage value, the charging control circuit 1191 adjusts charging current gears, the memory 1120 records a temperature rise value corresponding to each charging current gear, and the processor 1180 generates a temperature rise data model corresponding to the simulated battery working voltage value according to each charging current gear and the temperature rise value recorded by the memory 1120.

It should be noted that the temperature increase value recorded by the memory 1120 is an increase value of the surface temperature of the charging chip within a preset time, and may be detected by a temperature detection circuit in the mobile phone, or may be detected by other devices such as a temperature detector.

In another embodiment of the mobile terminal according to the embodiment of the present invention, the processor 1180 specifically executes the following steps:

and calculating a target temperature rise data model corresponding to the target working voltage value according to the temperature rise data model, selecting a target charging current corresponding to the temperature rise value meeting preset conditions according to the target temperature rise data model, wherein the target temperature rise data model comprises the charging current and the temperature rise value corresponding to the target working voltage value, and the temperature rise data model can comprise the target temperature rise data model or not comprise the target temperature rise data model, and is not limited specifically here.

and judging whether the working voltage in the temperature rise data model contains a target working voltage value, if so, taking the temperature rise data model corresponding to the target working voltage value in the temperature rise data model as the target temperature rise data model, and if not, determining the target temperature rise data model according to the temperature rise data model corresponding to the working voltage value of which the difference value between the target working voltage value and the temperature rise data model meets the preset condition.

In another embodiment of the mobile terminal according to the embodiment of the present invention, the processor 1180 specifically executes the following steps: determining a first working voltage value and a second working voltage value with the minimum difference value of target working voltage values in the temperature rise data model, determining a first temperature rise data model corresponding to the first working voltage value and a second temperature rise data model corresponding to the second working voltage value, linearly calculating according to the first temperature rise data model and the second temperature rise data model to obtain the target working voltage values and target temperature rise values corresponding to all charging current gears, and generating the target temperature rise data model according to all charging current gears and the target temperature rise values.

In another embodiment of the mobile terminal in the embodiment of the present invention, the processor 1180 specifically executes the following steps:

and determining an alternative temperature rise value which is smaller than a preset temperature rise value in the temperature rise values of the target temperature rise data model, determining alternative charging current corresponding to the alternative temperature rise value, and taking the maximum charging current in the alternative charging current as the target charging current.

and determining the minimum value in the temperature rise values of the target temperature rise data model, taking the charging current corresponding to the minimum value as the alternative charging current, and taking the maximum value charging current in the alternative charging current as the target charging current.

In the following, a mobile terminal supporting reading of the voltage at the input and output ends of the charging chip is described from a physical hardware perspective, where the terminal may be a mobile terminal device including a mobile phone, a tablet computer, a PDA (Personal Digital Assistant), and the like, and taking the terminal as the mobile phone as an example, fig. 11 is a block diagram illustrating a partial structure of the mobile phone related to the terminal provided in the embodiment of the present invention.

In another embodiment of the mobile terminal according to the embodiment of the present invention, the charging chip 1190 performs the following steps: reading the voltage of an input end and the voltage of an output end of the self; setting, by the charge control circuit 1191, the charge current of the battery to the target charge current determined by the processor 1180;

processor 1180 performs the following steps: calculating heat loss values corresponding to the charging currents according to the input end voltage and the output end voltage read by the charging chip 1190, and determining target charging currents corresponding to the heat loss values meeting preset conditions in the heat loss values;

the memory 1120 records the heat loss value calculated by the processor 1180.

Optionally, in another embodiment of the mobile terminal in the embodiment of the present invention, the processor 1180 specifically executes the following steps:

and determining an alternative heat loss value smaller than the preset heat loss value in the heat loss value, determining an alternative charging current corresponding to the alternative heat loss value, and taking the maximum charging current in the alternative charging currents as a target charging current.

and determining the minimum heat loss in the heat loss values, determining the alternative charging current corresponding to the minimum heat loss, and taking the maximum charging current in the alternative charging currents as the target charging current.

In another embodiment of a mobile terminal according to an embodiment of the present invention, the mobile terminal includes one or more processors, a memory, and one or more programs, where the one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs include instructions for executing an embodiment corresponding to any of fig. 1 to 5.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A method of charging, comprising:

setting a charging current of the battery as a target charging current.

2. The method of claim 1, wherein said obtaining a temperature rise data model comprises:

and generating a temperature rise data model corresponding to the working voltage value according to each charging current gear and the temperature rise value.

3. The method of claim 1, wherein determining the target charging current corresponding to the temperature rise value satisfying the preset condition according to the target operating voltage value of the battery and the temperature rise data model comprises:

4. The method of claim 3, wherein said calculating a target temperature rise data model corresponding to a target operating voltage value of the battery from the temperature rise data model comprises:

5. The method of claim 4, wherein the determining a target temperature rise data model according to the temperature rise data model corresponding to the operating voltage value whose target operating voltage value difference satisfies a preset condition comprises:

6. The method according to any one of claims 3 to 5, wherein the selecting a target charging current corresponding to a temperature rise value satisfying a preset condition according to the target temperature rise data model comprises:

7. The method according to any one of claims 3 to 5, wherein the selecting a target charging current corresponding to a temperature rise value satisfying a preset condition according to the target temperature rise data model comprises:

8. A method of charging, comprising:

the charging current of the battery is set as a target charging current.

9. The method of claim 8, wherein the determining the target charging current corresponding to the heat loss value satisfying the preset condition comprises:

10. The method of claim 8, wherein the determining the target charging current corresponding to the heat loss value satisfying the preset condition comprises:

determining a minimum heat loss of the heat loss values;

11. A mobile terminal, comprising:

12. The mobile terminal of claim 11, wherein the first obtaining module comprises:

the control submodule is used for determining the working voltage value of the analog battery, adjusting the charging current gears and recording the temperature rise value corresponding to each charging current gear, wherein the temperature rise value is the rise value of the surface temperature of the charging chip within preset time;

13. The mobile terminal of claim 11, wherein the determining module comprises:

14. The mobile terminal of claim 13, wherein the computation submodule comprises:

15. The mobile terminal according to claim 14, wherein the second determining unit comprises:

16. The mobile terminal according to any of claims 13 to 15, wherein the selection submodule comprises:

17. The mobile terminal according to any of claims 13 to 15, wherein the selection submodule comprises:

18. A mobile terminal, comprising:

19. The mobile terminal of claim 18, wherein the determining module comprises:

a third determining submodule, configured to use a maximum charging current of the alternative charging currents of the second determining unit submodule as a target charging current.

20. The mobile terminal of claim 18, wherein the determining module comprises:

21. A mobile terminal, comprising: the charging control circuit comprises a processor, a charging control circuit, a voltage detection circuit and a memory;

the voltage detection circuit performs the steps of: the method comprises the steps of connecting a battery to obtain a target working voltage value of the battery;

the processor performs the steps of:

22. The mobile terminal of claim 21,

the charging control circuit specifically executes the following steps:

adjusting a charging current gear;

the memory specifically performs the steps of: recording a temperature rise value corresponding to each charging current gear, wherein the temperature rise value is a rise value of the surface temperature of the charging chip within preset time;

the processor specifically executes the following steps:

determining the working voltage value of the analog battery;

and generating a temperature rise data model corresponding to the working voltage value according to each charging current gear and the temperature rise value recorded by the memory.

23. The mobile terminal of claim 21, wherein the processor is further configured to perform the following steps:

24. The mobile terminal of claim 23, wherein the processor is further configured to perform the following steps:

25. The mobile terminal of claim 24, wherein the processor is further configured to perform the following steps:

26. The mobile terminal according to any of claims 23 to 25, wherein the processor is configured to perform the following steps:

27. The mobile terminal according to any of claims 23 to 25, wherein the processor is configured to perform the following steps:

28. A mobile terminal, comprising: the charging device comprises a processor, a charging chip and a memory;

the charging chip executes the following steps:

setting a charging current of a battery to a target charging current determined by the processor;

the processor performs the steps of:

calculating heat loss values corresponding to the charging currents according to the input end voltage and the output end voltage read by the charging chip under the different charging currents;

29. The mobile terminal of claim 28, wherein the processor is further configured to perform the following steps:

30. The mobile terminal of claim 28, wherein the processor is further configured to perform the following steps:

determining a minimum heat loss of the heat loss values;

31. A mobile terminal, characterized in that the mobile terminal comprises: one or more processors, memory, and one or more programs stored in the memory and configured for execution by the one or more processors, the one or more programs including instructions for performing the method of any of claims 1-5.