QUICK CHARGING MOBILE TERMINAL, METHOD AND SYSTEM

• US 20160359340A1
• Filed: 04/03/2015
• Published: 12/08/2016
• Est. Priority Date: 12/30/2014
• Status: Active Grant

• Current Assignee: Columbia Peak Ventures, LLC (Dominion Harbor Enterprises, LLC)
• Original Assignee: JRD Communication Inc. (TCL Technology Group Corp.)
• Inventors: ZHAO, Longcheng, ZHAO, Shiqing
• Granted Patent: US 9,906,061 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H02J 7/0045 concerning the insertion or the connection of the batteries
• CPC Class Codes: H02J 7/007182 in response to battery voltage
• CPC Class Codes: H02J 7/007194 of the battery
• CPC Class Codes: H02J 7/04 Regulation of charging current or voltage
• CPC Class Codes: Y02B 40/00 Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Abstract

A quick charging mobile terminal, a charger, and a method for charging a mobile terminal are disclosed. The terminal includes: a detecting circuit, used to detect a charging environment of the mobile terminal, the charging environment including at least one of room temperature, battery parameters and charger parameters; a processing circuit, used to obtain an optimal quick charging curve according to the charging environment detected by the detecting circuit, and a charging management circuit, used to charge the mobile terminal according to the optimal quick charging curve and the charging environment. The disclosed terminal can ensure safety and the service life of the terminal while achieving quick charging of the terminal.

Claims

1. A quick charging mobile terminal, wherein the mobile terminal comprises:

a detecting circuit and a battery connected to the detecting circuit, wherein the detecting circuit is configured to detect a charging environment of the mobile terminal when the mobile terminal is connected to a charger for charging, the charging environment comprising at least one of room temperature, battery parameters, and charger parameters;

the detecting circuit comprises a first detecting sub-circuit, a second detecting sub-circuit and a third detecting sub-circuit, the first detecting sub-circuit is configured to detect the room temperature and a battery temperature, the second detecting sub-circuit is configured to detect the battery parameters, and the third detecting sub-circuit is configured to obtain the charger parameters through a charger interface;

a processing circuit, wherein the processing circuit is configured to obtain an optimal quick charging curve according to the charging environment detected by the detecting circuit, select a first relatively high current allowed by the battery parameters from a charging current range for charging when it is determined that the battery parameters indicate that charging with the first relatively high current is allowed, or select a second relatively high current or voltage allowed under the room temperature from a charging current or voltage range for charging when it is determined that the room temperature indicates that charging with the second relatively high current or voltage is allowed, or select a third relatively high current or voltage allowed by the charger parameters from a charging current or voltage range for charging when it is determined that the charger parameters indicate that charging with the third relatively high current or voltage is allowed; and

a charging management circuit, wherein the charging management circuit is configured to increase a charging power input to the mobile terminal according to the optimal quick charging curve obtained by the processing circuit to charge the mobile terminal,

wherein the charging management circuit comprises a current control sub-circuit, a voltage control sub-circuit, a pulse width modulation sub-circuit, and a charging control sub-circuit,

the current control sub-circuit is configured to control a charging current to be in a safe current range of the charging environment of the mobile terminal according to parameters detected by the detecting circuit or preset in the mobile terminal;

the voltage control sub-circuit is configured to;

when a voltage of the mobile terminal is in a preset safe voltage range, convert the voltage into an AC voltage and transmit the AC voltage to the pulse width modulation sub-circuit;

the pulse width modulation sub-circuit is configured to adjust, according to the optimal quick charging curve obtained by the processing circuit, a pulse width of the AC voltage converted by the voltage control sub-circuit, so as to adjust the charging voltage; and

the charging control sub-circuit is configured to control, according to the charging environment detected by the detecting circuit and the optimal quick charging curve obtained by the processing circuit, a switch to be switched on so that the charging voltage adjusted by the pulse width modulation sub-circuit charges the battery of the mobile terminal; and

when the battery of the mobile terminal is fully charged, switch off the switch.

2. The mobile terminal according to claim 1, wherein

the processing circuit is further configured to:

when an input voltage detected by the detecting circuit exceeds +5 v and a battery level is less than or equal to a first threshold, control the pulse width modulation sub-circuit to real-time adjust the pulse width of the AC voltage output by the voltage control sub-circuit, convert the AC voltage into an appropriate DC charging voltage lower than +5 v, and control the charging control sub-circuit to switch on the switch, so as to charge the battery of the mobile terminal by using the optimal charging current in the optimal charging curve;

the processing circuit is further configured to;

when an input voltage detected by the detecting circuit exceeds +5 v and the battery level is greater than the first threshold and less than a second threshold, control the pulse width modulation sub-circuit to real-time adjust the pulse width of the AC voltage output by the voltage control sub-circuit, convert the AC voltage into an appropriate DC charging voltage exceeding +5 v, and control the charging control sub-circuit to switch on the switch, so as to charge the battery of the mobile terminal by using the optimal charging current in the optimal charging curve;

the processing circuit is further configured to;

when an input voltage detected by the detecting circuit exceeds +5 v and the battery level is greater than the second threshold, control the pulse width modulation sub-circuit to real-time adjust the pulse width of the AC voltage to be wider, gradually reduce the charging voltage, and control the charging control sub-circuit to switch on the switch, so as to charge the battery of the mobile terminal by using the optimal charging current in the optimal charging curve;

the processing circuit is further configured to;

when an input voltage detected by the detecting circuit is +5 v and the battery level is less than the first threshold, control the pulse width modulation sub-circuit to real-time adjust the pulse width of the AC voltage output, convert the AC voltage into an appropriate DC charging voltage lower than +5 v, and control the charging control sub-circuit to switch on the switch, so as to charge the battery of the mobile terminal by using the optimal charging current in the optimal charging curve; and

the processing circuit is further configured d to;

when an input voltage detected by the detecting circuit is +5 v and the battery level is greater than the first threshold, control the pulse width modulation sub-circuit to real-time adjust the pulse width of the AC voltage output, convert the AC voltage into a DC charging voltage being +5 v, and control the switch to be switched on, so as to charge the battery of the mobile terminal.

3. The mobile terminal according to claim 1, wherein a battery cabin of the mobile terminal comprises a fool-proof structure, the fool-proof structure is only applicable for a battery of a quick charging type to mount into the battery cabin;

the terminal further comprises a display unit, and the display unit is configured to display a charging solution corresponding to the optimal quick charging curve, a charging amount, a charging time, and a residual charging time.

19. The system according to claim 2, wherein the first threshold is 5%, and the second threshold is 85%.

4. A quick charging mobile terminal, wherein the mobile terminal comprises:

a detecting circuit and a battery connected to the detecting circuit, wherein the detecting circuit is configured to detect a charging environment of the mobile terminal when the mobile terminal is connected to a charger for charging, the charging environment comprising at least one of room temperature, battery parameters and charger parameters;

a processing circuit, wherein the processing circuit is configured to obtain an optimal quick charging curve according to the charging environment detected by the detecting circuit, select a first relatively high current allowed by the battery parameters from a charging current range for charging when it is determined that the battery parameters indicate that charging with the first relatively high current is allowed, or select a second relatively high current or voltage allowed under the room temperature from a charging current or voltage range for charging when it is determined that the room temperature indicates that charging with the second relatively high current or voltage is allowed, or select a third relatively high current or voltage allowed by the charger parameters from a charging current or voltage range for charging when it is determined that the charger parameters indicate that charging with the third relatively high current or voltage is allowed; and

a charging management circuit, wherein the charging management circuit is configured to increase a charging power input to the mobile terminal according to the optimal quick charging curve obtained by the processing circuit, so as to charge the mobile terminal.

5. The mobile terminal according to claim 4, wherein the charging management circuit comprises a current control sub-circuit, a voltage control sub-circuit, a pulse width modulation sub-circuit, and a charging control sub-circuit,

the current control sub-circuit is configured to control the charging current to be in a safe current range of the charging environment of the mobile terminal according to parameters detected by the detecting circuit or preset in the mobile terminal;

the voltage control sub-circuit is configured to;

when a voltage of the mobile terminal is in a preset safe voltage range, convert the voltage into an AC voltage and transmit the AC voltage to the pulse width modulation sub-circuit;

the pulse width modulation sub-circuit is configured to adjust, according to the optimal quick charging curve obtained by the processing circuit, a pulse width of the AC voltage converted by the voltage control sub-circuit, so as to adjust the charging voltage; and

the charging control sub-circuit is configured to control, according to the charging environment detected by the detecting circuit and the optimal quick charging curve obtained by the processing circuit, a switch to be switched on so that the charging voltage adjusted by the pulse width modulation sub-circuit charges the battery of the mobile terminal; and

when the battery of the mobile terminal is fully charged, switch off the switch.

6. The mobile terminal according to claim 5, wherein

the processing circuit is further configured to:

when an input voltage detected by the detecting circuit exceeds +5 v and a battery level is less than or equal to a first threshold, control the pulse width modulation sub-circuit to real-time adjust the pulse width of the AC voltage output by the voltage control sub-circuit, convert the AC voltage into an appropriate DC charging voltage lower than +5 v, and control the charging control sub-circuit to switch on the switch, so as to charge the battery of the mobile terminal by using the optimal charging current in the optimal charging curve;

the processing circuit is further configured to;

when an input voltage detected by the detecting circuit exceeds +5 v and the battery level is greater than the first threshold and less than a second threshold, control the pulse width modulation sub-circuit to real-time adjust the pulse width of the AC voltage output by the voltage control sub-circuit, convert the AC voltage into an appropriate DC charging voltage exceeding +5 v, and control the charging control sub-circuit to switch on the switch, so as to charge the battery of the mobile terminal by using the optimal charging current in the optimal charging curve;

the processing circuit is further configured to;

when an input voltage detected by the detecting circuit exceeds +5 v and the battery level is greater than the second threshold, control the pulse width modulation sub-circuit to real-time adjust the pulse width of the AC voltage to be wider, gradually reduce the charging voltage, and control the charging control sub-circuit to switch on the switch, so as to charge the battery of the mobile terminal by using the optimal charging current in the optimal charging curve;

the processing circuit is further configured to;

when an input voltage detected by the detecting circuit is +5 v and the battery level is less than the first threshold, control the pulse width modulation sub-circuit to real-time adjust the pulse width of the AC voltage output, convert the AC voltage into an appropriate DC charging voltage lower than +5 v, and control the charging control sub-circuit to switch on the switch, so as to charge the battery of the mobile terminal by using the optimal charging current in the optimal charging curve; and

the processing circuit is further configured to;

when an input voltage detected by the detecting circuit is +5 v and the battery level is greater than the first threshold, control the pulse width modulation sub-circuit to real-time adjust the pulse width of the AC voltage output, convert the AC voltage into a DC charging voltage being +5 v, and control the switch to be switched on, so as to charge the battery of the mobile terminal.

7. The mobile terminal according to claim 4, wherein the detecting circuit comprises a first detecting sub-circuit, a second detecting sub-circuit and a third detecting sub-circuit, the first detecting sub-circuit is configured to detect the room temperature and the battery temperature, the second detecting sub-circuit is configured to detect the battery parameters, and the third detecting sub-circuit is configured to obtain the charger parameters through a charger interface.

8. The mobile terminal according to claim 4, wherein a battery cabin of the mobile terminal comprises a fool-proof structure, the fool-proof structure is only applicable for a battery of a quick charging type to mount into the battery cabin;

the terminal further comprises a display unit, and the display unit is configured to display one or more of a charging solution corresponding to the optimal quick charging curve, a charging amount, a charging time, and a residual charging time.

9. A quick charging method for a mobile terminal, wherein the method comprises:

detecting a charging environment of the mobile terminal when the mobile terminal is connected to a charger for charging, the charging environment comprising at least one of room temperature, battery parameters of a battery, and charger parameters;

obtaining an optimal quick charging curve according to the charging environment, selecting a first relatively high current allowed by the battery parameters from a charging current range for charging when it is determined that the battery parameters indicate that charging with the first relatively high current is allowed, or selecting a second relatively high current or voltage allowed under the room temperature from a charging current or voltage range for charging when it is determined that the room temperature indicates that charging with the second relatively high current or voltage is allowed, or selecting a third relatively high current or voltage allowed by the charger parameters from a charging current or voltage range for charging when it is determined that the charger parameters indicate that charging with the third relatively high current or voltage is allowed; and

increasing the charging power input to the mobile terminal according to the charging environment, the optimal quick charging curve and a charger input voltage, so as to charge the mobile terminal.

10. The method according to claim 9, wherein the step of increasing the charging power input to the mobile terminal according to the optimal quick charging curve to charge the mobile terminal comprises:

controlling a charging input current to be in a safe current range of the charging environment of the mobile terminal;

when an input voltage of the mobile terminal is in a preset safe voltage range, converting the input voltage into an AC voltage;

adjusting a pulse width of the AC voltage according to the optimal quick charging curve, so as to adjust the charging voltage; and

switching on a switch according to the charging environment and the optimal quick charging curve, so as to charge the battery of the mobile terminal; and

switching off the switch when the battery is fully charged.

11. The method according to claim 10, wherein the step of switching on the switch according to the charging environment and the optimal quick charging curve, so as to charge the battery of the mobile terminal;

and switching off the switch when the battery is fully charged specifically comprises;

when the input voltage exceeds +5 v and the battery level is less than or equal to a first threshold, real-time adjusting the pulse width of the AC voltage, converting the AC voltage into an appropriate DC charging voltage lower than +5 v, and controlling the switch to be switched on, so as to charge the battery of the mobile terminal by using the optimal charging current in the optimal charging curve;

when the input voltage exceeds +5 v and the battery level is greater than the first threshold and less than a second threshold, real-time adjusting the pulse width of the AC voltage, converting the voltage into an appropriate DC charging voltage exceeding +5 v, and controlling the switch to be switched on, so as to charge the battery of the mobile terminal by using the optimal charging current in the optimal charging curve;

when the input voltage exceeds +5 v and the battery level is greater than the second threshold, real-time adjusting the pulse width of the AC voltage to be wider, gradually reducing the charging voltage, and controlling the switch to be switched on, so as to charge the battery of the mobile terminal by using the optimal charging current in the optimal charging curve;

when the input voltage detected by the detecting circuit is +5 v and the battery level is less than the first threshold, real-time adjusting the pulse width of the AC voltage, converting the AC voltage into an appropriate DC charging voltage lower than +5 v, and controlling the switch to be switched on, so as to charge the battery of the mobile terminal by using the optimal charging current in the optimal charging curve; and

when the input voltage is +5 v and the battery level is greater than the first threshold, real-time adjusting the pulse width of the AC voltage output, converting the AC voltage into a DC charging voltage being +5 v, and controlling the switch to be switched on, so as to charge the battery of the mobile terminal.

20. The method according to claim 11, wherein the first threshold is 5%, and the second threshold is 85%.

12. A quick charging system, wherein the system comprises a charger, a mobile terminal, the mobile terminal comprises a detecting circuit, a processing circuit, a charging management circuit, the charger comprises an AC/DC converting module, a voltage processing module, and an interface module, wherein the detecting circuit is configured to detect a charging environment of the terminal when being connected to the charger for charging, the processing circuit is configured to obtain an optimal quick charging curve according to the charging environment detected by the detecting circuit, the charging management circuit is configured to adjust, according to the charging environment detected by the detecting circuit, the optimal quick charging curve obtained by the processing circuit and a charger input voltage, a charging power input to the mobile terminal, so as to charge the mobile terminal;

the AC/DC converting module is configured to convert an obtained external voltage into a fixed DC voltage greater than +5 v or equal to +5 v and output the DC voltage to the terminal;

the voltage processing module is configured to receive information sent by the terminal, and control the AC/DC converting module to convert the obtained external voltage into the fixed voltage greater than +5 v or equal to +5 v; and

the interface module is configured to output the fixed voltage greater than +5 v or equal to +5 v to the detecting module.

13. The system according to claim 12, wherein the interface module is a USB interface module, and if the charger is a charger outputting a voltage greater than +5 v, the USB interface module comprises a fool-proof structure, the fool-proof structure is merely applicable to connect to a terminal supporting a charging voltage greater than +5 v;

or the interface module is a non-USB interface module, the non-USB interface module comprises an adapter, and the adapter is used to match interfaces of different terminals.

14. The system according to claim 12, wherein the charging environment of the terminal comprises at least one of room temperature, battery parameters, and charger parameters.

15. The system according to claim 12, wherein the detecting circuit comprises a first detecting sub-circuit, a second detecting sub-circuit and a third detecting sub-circuit, the first detecting sub-circuit is configured to detect the room temperature and a battery temperature, the second detecting sub-circuit is configured to detect the battery parameters, and the third detecting sub-circuit is configured to obtain the charger parameters through the charger interface module.

16. The system according to claim 12, wherein the processing circuit is configured to obtain an optimal quick charging curve according to the charging environment detected by the detecting circuit, select a first relatively high current allowed by the battery parameters from a charging current range for charging when it is determined that the battery parameters indicate that charging with the first relatively high current is allowed, or select a second relatively high current or voltage allowed under the room temperature from a charging current or voltage range for charging when it is determined that the room temperature indicates that charging with the second relatively high current or voltage is allowed, or select a third relatively high current or voltage allowed by the charger parameters from a charging current or voltage range for charging when it is determined that the charger parameters indicate that charging with the third relatively high current or voltage is allowed.

17. The system according to claim 12, wherein the charging management circuit comprises a current control sub-circuit, a voltage control sub-circuit, a pulse width modulation sub-circuit, and a charging control sub-circuit,

the current control sub-circuit is configured to control a charging current to be in a safe current range of the charging environment of the mobile terminal according to parameters detected by the detecting circuit or preset in the mobile terminal;

the voltage control sub-circuit is configured to;

when a voltage of the mobile terminal is in a preset safe voltage range, convert the voltage into an AC voltage and transmit the AC voltage to the pulse width modulation sub-circuit;

the pulse width modulation sub-circuit is configured to adjust, according to the optimal quick charging curve obtained by the processing circuit, a pulse width of the AC voltage converted by the voltage control sub-circuit, so as to adjust the charging voltage; and

the charging control sub-circuit is configured to control, according to the charging environment detected by the detecting circuit and the optimal quick charging curve obtained by the processing circuit, a switch to be switched on so that the charging voltage adjusted by the pulse width modulation sub-circuit charges the battery of the mobile terminal; and

when the battery of the mobile terminal is fully charged, switch off the switch.

18. The system according to claim 12, wherein

the processing circuit is further configured to:

when an input voltage detected by the detecting circuit exceeds +5 v and a battery level is less than or equal to a first threshold, control the pulse width modulation sub-circuit to real-time adjust the pulse width of the AC voltage output by the voltage control sub-circuit, convert the AC voltage into an appropriate DC charging voltage lower than +5 v, and control the charging control sub-circuit to switch on the switch, so as to charge the battery of the mobile terminal by using the optimal charging current in the optimal charging curve;

the processing circuit is further configured to;

when an input voltage detected by the detecting circuit exceeds +5 v and the battery level is greater than the first threshold and less than a second threshold, control the pulse width modulation sub-circuit to real-time adjust the pulse width of the AC voltage output by the voltage control sub-circuit, convert the AC voltage into an appropriate DC charging voltage exceeding +5 v, and control the charging control sub-circuit to switch on the switch, so as to charge the battery of the mobile terminal by using the optimal charging current in the optimal charging curve;

the processing circuit is further configured to;

when an input voltage detected by the detecting circuit exceeds +5 v and the battery level is greater than the second threshold, control the pulse width modulation sub-circuit to real-time adjust the pulse width of the AC voltage to be wider, gradually reduce the charging voltage, and control the charging control sub-circuit to switch on the switch, so as to charge the battery of the mobile terminal by using the optimal charging current in the optimal charging curve;

the processing circuit is further configured to;

when an input voltage detected by the detecting circuit is +5 v and the battery level is less than the first threshold, control the pulse width modulation sub-circuit to real-time adjust the pulse width of the AC voltage output, convert the AC voltage into an appropriate DC charging voltage lower than +5 v, and control the charging control sub-circuit to switch on the switch, so as to charge the battery of the mobile terminal by using the optimal charging current in the optimal charging curve; and

the processing circuit is further configured d to;

when an input voltage detected by the detecting circuit is +5 v and the battery level is greater than the first threshold, control the pulse width modulation sub-circuit to real-time adjust the pulse width of the AC voltage output, convert the AC voltage into a DC charging voltage being +5 v, and control the switch to be switched on, so as to charge the battery of the mobile terminal.