CN218633430U

CN218633430U - Mobile terminal

Info

Publication number: CN218633430U
Application number: CN202222567442.7U
Authority: CN
Inventors: 韩冰; 宋伟娟
Original assignee: Hisense Mobile Communications Technology Co Ltd
Current assignee: Hisense Mobile Communications Technology Co Ltd
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2023-03-14
Anticipated expiration: 2032-09-27

Abstract

The utility model provides a mobile terminal, which comprises a first battery, a second battery, a first switch circuit, a second switch circuit, a comparison circuit and an electric system module, wherein the comparison circuit is used for inputting the current voltage and the preset reference voltage of the second battery and outputting a first level signal; the first switch circuit is used for receiving the first level signal and switching on or off a path between the first battery and the power system module; the second switch circuit is used for receiving the first level signal and switching on or off a path between the second battery and the electric system module. Because the comparison circuit inputs the current voltage of the second battery and the preset reference voltage and outputs the first level signal and the first level signal, the first switch circuit can be switched on or off, and the second switch circuit can be switched on or off, when the electric quantity of any one of the first battery and the second battery is sufficient, the mobile terminal can be started, and the problem that the mobile terminal cannot be started due to the fact that the electric quantity of the main battery is insufficient is solved.

Description

Mobile terminal

Technical Field

The utility model relates to an electronic circuit technical field, in particular to mobile terminal.

Background

For some terminal devices, especially mobile terminals, long-time uninterrupted operation is required, and in order to ensure sufficient electric quantity, a dual battery is usually used for power supply.

In a dual-battery mobile terminal in the related art, one battery is usually fixed as a main battery or a backup battery, and the other battery is detachable, so that the battery replacement of the dual-battery mobile terminal device is realized without power failure. However, when the main battery is low, the mobile terminal may not be powered on.

SUMMERY OF THE UTILITY MODEL

The utility model provides a mobile terminal for solve among the prior art double cell equipment because the main battery electric quantity is not enough to cause the problem of unable start.

The utility model provides a mobile terminal, including first battery, second battery, first switch circuit, second switch circuit, comparison circuit and power consumption system module, wherein:

the positive electrode of the first battery is electrically connected with the first end of the first switch circuit, the positive electrode of the second battery is electrically connected with the input end of the comparison circuit and the first end of the second switch circuit respectively, the negative electrode of the first battery and the negative electrode of the second battery are both grounded, the second end of the first switch circuit is electrically connected with the second end of the second switch circuit and the power supply end of the power utilization system module, and the output end of the comparison circuit is electrically connected with the third end of the first switch circuit and the third end of the second switch circuit respectively;

the comparison circuit is used for inputting the current voltage of the second battery and a preset reference voltage and outputting a first level signal;

the first switch circuit is used for receiving the first level signal and switching on or off a path between the first battery and the electric system module;

and the second switch circuit is used for receiving the first level signal and switching on or off a path between the second battery and the electric system module.

The utility model provides a mobile terminal, including first battery, second battery, first switch circuit, second switch circuit, comparison circuit and power consumption system module, comparison circuit for input second battery's current voltage and preset reference voltage, output first level signal; the first switch circuit is used for receiving the first level signal and switching on or off a path between the first battery and the power utilization system module; and the second switch circuit is used for receiving the first level signal and switching on or off a path between the second battery and the power utilization system module. The first switch circuit is controlled to be connected with a path between the first battery and the power utilization system module through the first level signal output by the comparison circuit, the second switch circuit is controlled to be disconnected with a path between the second battery and the power utilization system module, or the first switch circuit is controlled to be disconnected with a path between the first battery and the power utilization system module, and the second switch circuit is connected with a path between the second battery and the power utilization system module, so that the mobile terminal can be started under the condition that the electric quantity of any battery in the first battery and the second battery is sufficient, and the problem that the terminal equipment cannot be started due to the fact that the electric quantity of a main battery is insufficient is solved.

In an alternative embodiment, the comparison circuit includes a comparator, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, and a first capacitor, where:

a first end of the comparator is electrically connected with one end of the first resistor and one end of the fourth resistor respectively, a second end of the comparator is electrically connected with one end of the first capacitor, a third end of the comparator is electrically connected with the other end of the first capacitor and ground, and a fourth end of the comparator is electrically connected with the other end of the fourth resistor and one end of the fifth resistor respectively and serves as an output end of the comparison circuit;

the other end of the first resistor is electrically connected with the other end of the fourth resistor and is used as an input end of the comparison circuit;

the other end of the second resistor is electrically connected with one end of the third resistor;

the other end of the third resistor and the other end of the fifth resistor are both grounded.

According to the scheme, the comparison circuit is used for inputting the current voltage of the second battery and the preset reference voltage, comparing the current voltage of the second battery with the preset reference voltage, if the electric quantity of the second battery is sufficient, the current voltage of the second battery is larger than the preset reference voltage, and outputting the first level signal as the high level signal; if the electric quantity of the second battery is insufficient, the current voltage of the second battery is smaller than the preset reference voltage, and the output first level signal is a low level signal. Before the mobile terminal is started, the comparison circuit inputs a first level signal into the first switch circuit and the second switch circuit respectively so as to control the first switch circuit to switch on or off a path between the first battery and the power utilization system module and control the second switch circuit to switch on or off a path between the second battery and the power utilization system module.

In an optional embodiment, the first switch circuit includes a first switch tube, a second switch tube, a third switch tube, a fourth switch tube, a fifth switch tube, a sixth resistor, a seventh resistor, and a second capacitor, where:

a first end of the first switch tube is used as a first end of the first switch circuit, a second end of the first switch tube is respectively and electrically connected with one end of the sixth resistor, one end of the second capacitor, a second end of the second switch tube and one end of the seventh resistor, and a control end of the first switch tube is respectively and electrically connected with the other end of the sixth resistor, the other end of the second capacitor, a control end of the second switch tube and a first end of the third switch tube;

the first end of the second switch tube is used as the second end of the first switch circuit;

the control end of the third switching tube is electrically connected with the other end of the seventh resistor, the first end of the fourth switching tube and the first end of the fifth switching tube respectively, and the second end of the third switching tube is grounded;

the control end of the fourth switching tube is electrically connected with the first control end of the power utilization system module, and the second end of the fourth switching tube is grounded;

and the control end of the fifth switching tube is used as the third end of the first switching circuit, and the second end of the fifth switching tube is grounded.

According to the scheme, the first switch circuit is disconnected with the path between the first battery and the power system module in the default state, and the path between the first battery and the power system module is switched on or off according to the first level signal output by the comparison circuit, namely, when the electric quantity of the second battery is insufficient and the electric quantity of the first battery is sufficient, the first level signal output by the comparison circuit is a low level signal, the low level signal controls the first switch circuit to switch on the path between the first battery and the power system module, and controls the second switch circuit to switch off the path between the second battery and the power system module, so that the electric quantity of the second battery is insufficient, and when the electric quantity of the first battery is sufficient, the first battery supplies power for the power system module.

In an optional embodiment, the second switching circuit includes a sixth switching tube, a seventh switching tube, an eighth switching tube, a ninth switching tube, an eighth resistor, and a third capacitor, where:

a first end of the sixth switching tube is used as a first end of the second switching circuit, a second end of the sixth switching tube is electrically connected with one end of the eighth resistor, one end of the third capacitor and a second end of the seventh switching tube respectively, and a control end of the sixth switching tube is electrically connected with the other end of the eighth resistor, the other end of the third capacitor, a control end of the seventh switching tube, a first end of the eighth switching tube and a first end of the ninth switching tube respectively;

a first end of the seventh switching tube is used as a second end of the second switching circuit;

the control end of the eighth switching tube is electrically connected with the second control end of the power utilization system module, and the second end of the eighth switching tube is grounded;

and the control end of the ninth switching tube is used as the third end of the second switching circuit, and the second end of the ninth switching tube is grounded.

According to the scheme, the second switch circuit is disconnected from the path between the second battery and the power utilization system module in the default state, the path between the second battery and the power utilization system module is connected or disconnected according to the first level signal output by the comparison circuit, namely, when the electric quantity of the second battery is sufficient, the first level signal output by the comparison circuit is a high level signal, the high level signal controls the second switch circuit to be connected with the path between the second battery and the power utilization system module, and the first switch circuit is controlled to be disconnected from the path between the first battery and the power utilization system, so that the power is supplied to the power utilization system module by the second battery when the electric quantity of the second battery is sufficient.

In an alternative embodiment, the mobile terminal further comprises a first analog switch circuit, wherein:

the first end of the first analog switch circuit is electrically connected with the third end of the first switch circuit and the third end of the second switch circuit respectively, the second end of the first analog switch circuit is electrically connected with the output end of the comparison circuit, and the third end of the first analog switch circuit is grounded;

the first analog switch circuit is used for conducting a path between a first end of the first analog switch circuit and a second end of the first analog switch circuit before the mobile terminal is started, and conducting a path between the first end of the first analog switch circuit and a third end of the first analog switch circuit after the mobile terminal is started.

In the above solution, the first analog switch circuit is used to turn on a path between a first end of the first analog switch circuit and a second end of the first analog switch circuit before the mobile terminal is powered on, and to turn on a path between the first end of the first analog switch circuit and a third end of the first analog switch circuit after the mobile terminal is powered on, that is, before the mobile terminal is powered on, the first analog switch circuit turns on a path between the comparison circuit and the first switch circuit and turns on a path between the comparison circuit and the second switch circuit, so that an output of the comparison circuit can control on and off of the first switch circuit and control off and on of the second switch circuit; after the mobile terminal is started, the first analog switch circuit controls the third end of the first switch circuit and the third end of the second switch circuit to be grounded so as to shield the control of the comparison circuit on the first switch circuit and the second switch circuit, and the power utilization system module can control the connection or disconnection of the first switch circuit and the second switch circuit, so that the mobile terminal is controlled by the comparison circuit before being started, and is controlled by the power utilization system module after being started.

In an alternative embodiment, the first analog switch circuit includes a first two-way single pole double throw switch, a ninth resistor, a tenth resistor, an eleventh resistor, a first diode, a second diode, and a fourth capacitor, wherein:

a first end of the first double-pole double-throw switch is electrically connected with one end of the ninth resistor and one end of the fourth capacitor respectively, a second end of the first double-pole double-throw switch is electrically connected with one end of the tenth resistor, a third end of the first double-pole double-throw switch serves as a first end of the first analog switch circuit, a fourth end of the first double-pole double-throw switch is electrically connected with a third control end of the power utilization system module and one end of the eleventh resistor respectively, a fifth end of the first double-pole double-throw switch serves as a second end of the first analog switch circuit, and a sixth end of the first double-pole double-throw switch is grounded;

the other end of the ninth resistor is electrically connected with the cathode of the first diode and the cathode of the second diode respectively;

the other end of the tenth resistor is used as a third end of the first analog switch circuit;

the other end of the eleventh resistor and the other end of the fourth capacitor are both grounded;

the anode of the first diode is electrically connected with a system power supply voltage;

the anode of the second diode is electrically connected to the anode of the second battery.

In the above scheme, the first analog switch circuit is a first double-way single-pole double-throw switch, one of the single-pole double-throw switches is suspended, the other single-pole double-throw switch functions, the fourth end of the first double-way single-pole double-throw switch receives a control signal sent by the third control end of the power system module, before the mobile terminal is powered on, the third control end of the power system module sends a low level signal, and after the fourth end of the first double-way single-pole double-throw switch receives the low level signal, the first analog switch circuit controls to conduct a path between the fifth end of the first double-way single-pole double-throw switch and the output end of the comparison circuit; after the mobile terminal is started, the third control end of the power utilization system module sends out a high-level signal, the fourth end of the first double-way single-pole double-throw switch receives the high-level signal and then controls a path between the sixth end of the first double-way single-pole double-throw switch and the ground to be conducted, and the first double-way single-pole double-throw switch can be used for accurately controlling the switching time of the first analog switch circuit.

In an optional embodiment, the mobile terminal further comprises a level shift circuit;

the input end of the level switching circuit is electrically connected with the output end of the comparison circuit, and the output end of the level switching circuit is electrically connected with the input end of the power utilization system module;

the level conversion circuit is used for carrying out level conversion on the level signal output by the comparison circuit and outputting the converted level signal;

the power utilization system module is used for receiving the converted level signal and outputting a second level signal and a third level signal;

the first switch circuit is used for receiving the second level signal and switching on or off a path between the first battery and the electric system module;

and the second switch circuit is used for receiving the third level signal and switching on or off a path between the second battery and the electric system module.

In an optional embodiment, the level shift circuit includes a tenth switch tube and a twelfth resistor, where:

a control end of the tenth switching tube is used as an input end of the level shift circuit, a first end of the tenth switching tube is electrically connected with one end of the twelfth resistor and is used as an output end of the level shift circuit, and a second end of the tenth switching tube is grounded;

the other end of the twelfth resistor is electrically connected with a common voltage.

According to the scheme, the level conversion circuit is used for carrying out level conversion on the level signal output by the comparison circuit and outputting the converted level signal, the electric system module outputs a second level signal for controlling the connection or disconnection of a path between the first battery and the electric system module and a third level signal for controlling the connection or disconnection of a path between the second battery and the electric system module after receiving the converted level signal, so that after the mobile terminal is started, the electric system module controls the first switch circuit through the second level signal and controls the second switch circuit through the third level signal, and further after the mobile terminal is started, the electric system module is used for controlling the power supply switching of the first battery and the second battery.

In an alternative embodiment, the mobile terminal further comprises a second analog switch circuit, wherein:

a first end of the second analog switch circuit is electrically connected with a temperature detection end of the power utilization system module, a second end of the second analog switch circuit is electrically connected with a temperature detection end of the first battery, a third end of the second analog switch circuit is electrically connected with a temperature detection end of the second battery, a fourth end of the second analog switch circuit is electrically connected with a fourth control end of the power utilization system module, a fifth end of the second analog switch circuit is electrically connected with an output end of the comparison circuit, and a control end of the second analog switch circuit is electrically connected with a fifth control end of the power utilization system module;

the second analog switch circuit is used for receiving the first level signal output by the comparison circuit before the mobile terminal is started, switching on a path between the temperature detection end of the first battery and the temperature detection end of the power utilization system module, or switching on a path between the temperature detection end of the second battery and the temperature detection end of the power utilization system module, and receiving the fourth level signal output by the power utilization system module after the mobile terminal is started, switching on a path between the temperature detection end of the first battery and the temperature detection end of the power utilization system module, or switching on a path between the temperature detection end of the second battery and the temperature detection end of the power utilization system module.

According to the scheme, before the mobile terminal is started, the second analog switch circuit receives the first level signal output by the comparison circuit and controls to conduct a path between the temperature detection end of the first battery and the temperature detection end of the power utilization system module or conduct a path between the temperature detection end of the second battery and the temperature detection end of the power utilization system module according to the first level signal; after the mobile terminal is started, the second analog switch circuit receives a fourth level signal output by a fourth control end of the power utilization system module, and controls and conducts a path between a temperature detection end of the first battery and a temperature detection end of the power utilization system module or a path between the temperature detection end of the second battery and the temperature detection end of the power utilization system module according to the fourth level signal, so that one path of temperature detection path is selected by the output control of the comparison circuit before the mobile terminal is started to detect the current temperature of the battery to be detected, and the mobile terminal can be normally started only when the current temperature of the battery to be detected is within a safety range; after the mobile terminal is started, one path of temperature detection path is selected by the output control of the power utilization system module to continuously detect the current temperature of the power supply battery, and the mobile terminal can continuously and normally work only when the temperature of the power supply battery is always in accordance with the safety range.

In an alternative embodiment, the second analog switch circuit includes a second double-way single-pole double-throw switch, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, and a fifth capacitor, wherein:

a first end of the second double-pole double-throw switch is electrically connected with one end of the thirteenth resistor and one end of a fifth capacitor respectively, a second end of the second double-pole double-throw switch is used as a third end of the second analog switch circuit, a third end of the second double-pole double-throw switch is used as a first end of the second analog switch circuit, a fourth end of the second double-pole single-throw switch is electrically connected with one end of the fourteenth resistor and a seventh end of the second double-pole single-throw switch respectively, a fifth end of the second double-pole single-pole double-throw switch is used as a second end of the second analog switch circuit, a sixth end of the second double-pole single-throw switch is used as a fourth end of the second analog switch circuit, an eighth end of the second double-pole double-throw switch is electrically connected with one end of the fifteenth resistor and is used as a control end of the second double-pole double-throw switch circuit, a second end of the second double-pole double-throw switch is used as a ninth end of the second analog switch circuit, and a tenth end of the second double-pole double-throw switch is grounded;

the other end of the thirteenth resistor is electrically connected with the cathode of the first diode and the cathode of the second diode respectively;

the other end of the fourteenth resistor, the other end of the fifteenth resistor and the other end of the fifth capacitor are all grounded.

In the above scheme, the second analog switch circuit adopts a second double-way single-pole double-throw switch, the eighth end of the second double-way single-pole double-throw switch is used as the control end of the second analog switch circuit, before the mobile terminal is started, the eighth end of the second double-way single-pole double-throw switch is at a low level, and the passage between the ninth end of the second double-way single-pole double-throw switch and the seventh end of the second double-way single-pole double-throw switch is controlled to be conducted, so that the selection of the temperature detection passage is controlled by the comparison circuit; after the mobile terminal is started, the eighth end of the second double-circuit single-pole double-throw switch is at a high level, and a path between the sixth end of the second double-circuit single-pole double-throw switch and the seventh end of the second double-circuit single-pole double-throw switch is controlled to be conducted, so that the electric system module controls the selection of a temperature detection path.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of another mobile terminal according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of another mobile terminal according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of another mobile terminal according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of another mobile terminal according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of another mobile terminal according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of another mobile terminal according to an embodiment of the present invention;

fig. 8 is a schematic circuit diagram of a comparison circuit according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a first switch circuit according to an embodiment of the present invention;

fig. 10 is a schematic circuit diagram of a first switch circuit according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a second switch circuit according to an embodiment of the present invention;

fig. 12 is a schematic circuit diagram of a second switch circuit according to an embodiment of the present invention;

fig. 13 is a schematic circuit diagram illustrating a connection between a first switch circuit and a second switch circuit according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of a first analog switch circuit according to an embodiment of the present invention;

fig. 15 is a schematic circuit diagram of a first analog switch circuit according to an embodiment of the present invention;

fig. 16 is a schematic structural diagram of another mobile terminal according to an embodiment of the present invention;

fig. 17 is a schematic circuit diagram of a level shift circuit according to an embodiment of the present invention;

fig. 18 is a schematic structural diagram of a second analog switch circuit according to an embodiment of the present invention;

fig. 19 is a schematic circuit diagram of a second analog switch circuit according to an embodiment of the present invention;

fig. 20 is a schematic circuit structure diagram of a mobile terminal according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and the like in the description of the invention does not denote any order, quantity, or importance, but rather the terms "first," "second," and the like are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

An embodiment of the utility model provides a mobile terminal for solve among the prior art problem that the unable start that double cell equipment caused because the main battery electric quantity is not enough.

The following describes the embodiments of the present invention in detail with reference to the accompanying drawings.

As shown in fig. 1, for the utility model provides a pair of mobile terminal, including first battery 11, second battery 12, first switch circuit 13, second switch circuit 14, comparison circuit 15 and with electric system module 16, wherein:

the positive pole (+) of the first battery 11 is electrically connected with the first end of the first switch circuit 13, the positive pole (+) of the second battery 12 is electrically connected with the input end of the comparison circuit 15 and the first end of the second switch circuit 14, respectively, the negative pole (-) of the first battery 11 and the negative pole (-) of the second battery 12 are both grounded, the second end of the first switch circuit 13 is electrically connected with the second end of the second switch circuit 14 and the power supply end of the power utilization system module 16, and the output end of the comparison circuit 15 is electrically connected with the third end of the first switch circuit 13 and the third end of the second switch circuit 14, respectively;

a comparison circuit 15, configured to input a current voltage of the second battery 12 and a preset reference voltage, and output a first level signal;

a first switch circuit 13 for receiving a first level signal and turning on or off a path between the first battery 11 and the power system module 16;

and a second switch circuit 14 for receiving the first level signal and turning on or off a path between the second battery 12 and the power system module 16.

The utility model provides a mobile terminal, including first battery 11, second battery 12, first switch circuit 13, second switch circuit 14, comparison circuit 15 and power consumption system module 16, comparison circuit 15 inputs the current voltage and the preset reference voltage of second battery 12, outputs first level signal; the first switch circuit 13 receives the first level signal, and turns on or off a path between the first battery 11 and the power system module 16; the second switch circuit 14 receives the first level signal and turns on or off a path between the second battery 12 and the power system module 16. Because the comparison circuit 15 can input the current voltage of the second battery 12 and the preset reference voltage and output a first level signal, the first level signal can make the first switch circuit 13 turn on the path between the first battery 11 and the power system module 16, and make the second switch circuit 14 turn off the path between the second battery 12 and the power system module 16, or make the first switch circuit 13 turn off the path between the first battery 11 and the power system module 16, and make the second switch circuit 14 turn on the path between the second battery 12 and the power system module 16, the mobile terminal can be turned on when the electric quantity of any one of the first battery 11 and the second battery 12 is sufficient, and the problem that the mobile terminal cannot be turned on due to the insufficient electric quantity of the main battery is solved, thereby improving the performance of the mobile terminal.

In a specific implementation, the comparison circuit 15 inputs the current voltage output by the positive pole (+) of the second battery 12, and compares the current voltage with the preset reference voltage input by the comparison circuit 15, and outputs a first level signal for controlling the first switch circuit 13 and the second switch circuit 14, that is, if the current voltage output by the second battery 12 is greater than the preset reference voltage, the first level signal output by the comparison circuit 15 is a high level signal, the second switch circuit 14 turns on the path between the second battery 12 and the power system module 16 under the control of the high level signal, and the first switch circuit 13 keeps turning off the path between the first battery 11 and the power system module 16 under the control of the high level signal, so that the second battery 12 supplies power to the power system module 16, and normal startup of the mobile terminal is further achieved; if the current voltage output by the second battery 12 is smaller than the preset reference voltage, the first level signal output by the comparison circuit 15 is a low level signal, the second switch circuit 14 keeps disconnecting the path between the second battery 12 and the power utilization system module 16 under the control of the low level signal, and the first switch circuit 13 conducts the path between the first battery 11 and the power utilization system module 16 under the control of the low level signal, so that the first battery 11 supplies power to the power utilization system module 16, and the mobile terminal is normally started.

It should be noted that, in the embodiment of the present invention, before the mobile terminal is turned on, the first switch circuit 13 and the second switch circuit 14 are both turned off by default. When the current voltage output by the second battery 12 is greater than the preset reference voltage, it indicates that the second battery 12 has sufficient electric quantity, the second battery 12 can be used to supply power to the mobile terminal, the second switch circuit 14 switches on the path between the second battery 12 and the power system module 16, and the first switch circuit 13 keeps switching off the path between the first battery 11 and the power system module 16; when the current voltage output by the second battery 12 is less than or equal to the preset reference voltage, it indicates that the second battery 12 is insufficient in power, the second battery 12 cannot be used to supply power to the mobile terminal, the second switch circuit 14 keeps disconnecting the path between the second battery 12 and the power system module 16, the first switch circuit 14 connects the path between the first battery 11 and the power system module 16, and the first battery 11 is used to supply power to the mobile terminal.

The embodiment of the utility model provides an in mobile terminal can be the cell-phone, can be the panel computer, still can be for other mobile terminal, the embodiment of the utility model provides a do not do any restriction to this.

The embodiment of the utility model provides an in can be CPU (Central Processing Unit) with electrical system module 15, in this application, first switch circuit 13 and second switch circuit 14 can also receive CPU's control signal except receiving the first level signal of comparison circuit output to control first switch circuit 13 and switch on or break off, and control second switch circuit 14 and switch on or break off.

In implementation, the first battery 11 and the second battery 12 can both be detachable batteries, and can also be two identical batteries, and the user can detach and replace the batteries according to the electric quantity conditions of the first battery 11 and the second battery 12, so that the batteries can be replaced in time under the condition that the electric quantity of the first battery 11 or the electric quantity of the second battery 12 is insufficient, the service life of the mobile terminal is prolonged, and the use by the user is facilitated.

In an alternative embodiment, as shown in fig. 2, the mobile terminal may further include a first analog switch circuit 21, wherein:

a first end of the first analog switch circuit 21 is electrically connected with a third end of the first switch circuit 13 and a third end of the second switch circuit 14 respectively, a second end of the first analog switch circuit 21 is electrically connected with an output end of the comparison circuit 15, and a third end of the first analog switch circuit 21 is grounded;

the first analog switch circuit 21 is configured to conduct a path between a first terminal of the first analog switch circuit 21 and a second terminal of the first analog switch circuit 21 before the mobile terminal is powered on, and conduct a path between the first terminal of the first analog switch circuit 21 and a third terminal of the first analog switch circuit 21 after the mobile terminal is powered on.

In a specific implementation, before the mobile terminal is turned on, the first analog switch circuit 21 turns on a path between the comparison circuit 15 and the first switch circuit 13 and turns on a path between the comparison circuit 15 and the second switch circuit 14, the comparison circuit 15 obtains a current voltage of the second battery 12 and compares the current voltage with a preset reference voltage input by the comparison circuit 15, if the current voltage of the second battery 12 is greater than the preset reference voltage and a first level signal output by the comparison circuit 15 is a high level signal, the comparison circuit 15 respectively sends the high level signal to the first switch circuit 13 and the second switch circuit 14 through the path on which the first analog switch circuit 21 is turned on, the first switch circuit 13 keeps off after receiving the high level signal, and the second switch circuit 14 turns on the path between the second battery 12 and the power utilization system module 16 after receiving the high level signal, so that the second battery 12 supplies power to the power utilization system module 16; if the current voltage of the second battery 12 is less than or equal to the preset reference voltage, and the first level signal output by the comparison circuit 15 is a low level signal, the comparison circuit 15 sends the low level signal to the first switch circuit 13 and the second switch circuit 14 through a path that the first analog switch circuit 21 is turned on, respectively, after receiving the low level signal, the first switch circuit 13 turns on a path between the first battery 11 and the power consumption system module 16, and after receiving the low level signal, the second switch circuit 14 keeps off, so that the first battery 11 supplies power to the power consumption system module 16.

In a specific implementation, after the mobile terminal is powered on, the first analog switch circuit 21 turns on a path between the first switch circuit 13 and the ground, and turns on a path between the second switch circuit 14 and the ground to shield the control of the comparison circuit 15 on the first switch circuit 13 and the second switch circuit 14, and at this time, the first switch circuit 13 is controlled only by the power system module 16, and the second switch circuit 14 is also controlled only by the power system module 16.

The first analog switch circuit 21 is configured to turn on a path between the first end of the first analog switch circuit 21 and the second end of the first analog switch circuit 21 before the mobile terminal is powered on, and turn on a path between the first end of the first analog switch circuit 21 and the third end of the first analog switch circuit 21 after the mobile terminal is powered on, that is, before the mobile terminal is powered on, the first analog switch circuit 21 turns on a path between the comparison circuit 15 and the first switch circuit 13 and turns on a path between the comparison circuit 15 and the second switch circuit 14, so that the output of the comparison circuit 15 can control on and off of the first switch circuit 13 and control off and on of the second switch circuit 14; after the mobile terminal is turned on, the first analog switch circuit 21 controls the third terminal of the first switch circuit 13 and the third terminal of the second switch circuit 14 to be grounded so as to shield the control of the comparison circuit 15 on the first switch circuit 13 and the second switch circuit 14, so that the power utilization system module 16 can control the first switch circuit 13 and the second switch circuit 14 to be switched on or off, and therefore, the mobile terminal is controlled by the comparison circuit 15 only before being turned on and controlled by the power utilization system module 16 only after being turned on.

In an alternative embodiment, as shown in fig. 3, the mobile terminal may further include a level shift circuit 31;

the input end of the level conversion circuit 31 is electrically connected with the output end of the comparison circuit 15, and the output end of the level conversion circuit 31 is electrically connected with the input end of the power utilization system module 16;

a level conversion circuit 31 for performing level conversion on the level signal output from the comparison circuit 15 and outputting the converted level signal;

the power utilization system module 16 is used for receiving the converted level signal and outputting a second level signal and a third level signal;

a first switch circuit 13 for receiving the second level signal and turning on or off a path between the first battery 11 and the power system module 16;

and a second switch circuit 14 for receiving the third level signal and turning on or off a path between the second battery 12 and the power system module 16.

In a specific implementation, as shown in fig. 4, after the second battery 12 supplies power to the power consumption system module 16, the power consumption system module 16 sends a high-level control signal to the first switch circuit module 21 through the third control terminal, so that the first analog switch circuit 21 shields the control effect of the comparison circuit 15 on the first switch circuit 13 and the second switch circuit 14, that is, the first analog switch circuit 21 conducts a path between the first terminal of the first analog switch circuit 21 and the third terminal of the first analog switch circuit 21, at this time, the first switch circuit 13 is controlled by the first control terminal of the power consumption system module 16, the comparison circuit 15 continuously compares the current voltage of the second battery 12 with the preset reference voltage, if the current voltage of the second battery 12 is greater than the preset reference voltage, that the second battery 12 is sufficient, power may be continuously supplied to the power consumption system module, the comparison circuit 15 outputs a high-level signal to the level conversion circuit 31, the level conversion circuit 31 performs voltage reduction processing on the high-level signal, for example, converts the high-level signal into a high-level signal, and outputs the high-level signal to the second switch circuit 14, and outputs the high-level control signal to the second switch circuit 14, and the power consumption system control module to output the high-level control signal to the control signal after the first switch circuit 16 continuously receives the high-level control signal, and continuously; if the current voltage of the second battery 12 is less than the preset reference voltage, that is, the second battery 12 has insufficient power, and cannot continue to supply power to the power consumption system module, the comparison circuit 15 outputs a low level signal to the level conversion circuit 31, the level conversion circuit 31 performs voltage reduction processing on the low level signal, for example, the low level signal is converted into a low level signal of 0V and is sent to the power consumption system module 16, after the power consumption system module 16 receives the low level signal of 0V, the third level signal is output through the second control terminal to control to turn off the second switch circuit 14, the second level signal is output through the first control terminal to control to turn on the first switch circuit 13, that is, the first battery 11 is used to supply power to the power consumption system module 16, so as to ensure that the dual battery terminals can realize power conversion without power failure.

The level conversion circuit 31 is configured to perform level conversion on the level signal output by the comparison circuit 15 and output a converted level signal, and after receiving the converted level signal, the power utilization system module 16 outputs a second level signal for controlling a path between the first battery 11 and the power utilization system module 16 to be turned on or off and a third level signal for controlling a path between the second battery 12 and the power utilization system module 16 to be turned on or off, so that after the mobile terminal is powered on, the power utilization system module 16 controls the first switch circuit 13 through the second level signal and controls the second switch circuit 14 through the third level signal, and further after the mobile terminal is powered on, the power utilization system module 16 controls switching of power supply to the first battery 11 and the second battery 12.

In an alternative embodiment, as shown in fig. 5, the mobile terminal may further include a second analog switch circuit 51, wherein:

a first end of the second analog switch circuit 51 is electrically connected with a temperature detection end of the power utilization system module 16, a second end of the second analog switch circuit 51 is electrically connected with a temperature detection end of the first battery 11, a third end of the second analog switch circuit 51 is electrically connected with a temperature detection end of the second battery 12, a fourth end of the second analog switch circuit 51 is electrically connected with a fourth control end of the power utilization system module 16, a fifth end of the second analog switch circuit 51 is electrically connected with an output end of the comparison circuit 15, and a control end of the second analog switch circuit 51 is electrically connected with a fifth control end of the power utilization system module 16;

the second analog switch circuit 51 is configured to receive the first level signal output by the comparison circuit 15 before the mobile terminal is powered on, turn on a path between the temperature detection terminal of the first battery 11 and the temperature detection terminal of the power consumption system module 16, or turn on a path between the temperature detection terminal of the second battery 12 and the temperature detection terminal of the power consumption system module 16, receive the fourth level signal output by the power consumption system module 16 after the mobile terminal is powered on, turn on a path between the temperature detection terminal of the first battery 11 and the temperature detection terminal of the power consumption system module 16, or turn on a path between the temperature detection terminal of the second battery 12 and the temperature detection terminal of the power consumption system module 16.

It should be noted that, in the embodiment of the present invention, the path between the fifth terminal of the second analog switch circuit 51 and the output terminal of the comparison circuit 15 is turned on by default, and the path between the second terminal of the second analog switch circuit 51 and the temperature detection terminal of the first battery 11 is turned on by default.

In a specific implementation, before the mobile terminal is powered on, the control signal sent by the electric system module 16 to the second analog switch circuit 51 through the fifth control terminal is a low level signal, after the second analog switch circuit 51 receives the low level signal, the second analog switch circuit 51 switches on a path between the second analog switch circuit 51 and the comparison circuit 15, and the second analog switch circuit 51 switches on a path between the temperature detection terminal of the first battery 11 and the temperature detection terminal of the electric system module 16 according to the first level signal output by the comparison circuit 15, or switches on a path between the temperature detection terminal of the second battery 12 and the temperature detection terminal of the electric system module 16, for example, when the first level signal is a high level signal, the second analog switch circuit 51 switches on a path between the temperature detection terminal of the second battery 12 and the temperature detection terminal of the electric system module 16, and switches off a path between the temperature detection terminal of the first battery 11 and the temperature detection terminal of the electric system module 16, and the electric system module 16 detects whether the current temperature of the second battery 12 meets a safety range, so that the mobile terminal is powered on safely; when the first level signal is a low level signal, the second analog switch circuit 51 switches on a path between the temperature detection end of the first battery 11 and the temperature detection end of the power consumption system module 16, and switches off a path between the temperature detection end of the second battery 12 and the temperature detection end of the power consumption system module 16, and the power consumption system module 16 detects whether the current temperature of the first battery 11 meets a safety range, so that the mobile terminal is safely started.

In a specific implementation, after the mobile terminal is powered on, the power utilization system module 16 sends a control signal to the second analog switch circuit 51 through the fifth control terminal as a high level signal, after the second analog switch circuit 51 receives the high level signal, the second analog switch circuit 51 turns on a path between the second analog switch circuit 51 and the fourth control terminal of the power utilization system module 16, and the second analog switch circuit 51 turns on a path between the temperature detection terminal of the first battery 11 and the temperature detection terminal of the power utilization system module 16 or turns on a path between the temperature detection terminal of the second battery 12 and the temperature detection terminal of the power utilization system module 16 according to the fourth level signal output by the fourth control terminal of the power utilization system module 16, for example, when the fourth level signal is a high level signal, the second analog switch circuit 51 turns on a path between the temperature detection terminal of the second battery 12 and the temperature detection terminal of the power utilization system module 16, and turns off a path between the temperature detection terminal of the first battery 11 and the temperature detection terminal of the power utilization system module 16, so that the power utilization system module 16 detects whether the current temperature of the second battery 12 meets the safety range in real time to ensure that the mobile terminal works normally; when the fourth level signal is a low level signal, the second analog switch circuit 51 switches on a path between the temperature detection terminal of the first battery 11 and the temperature detection terminal of the power consumption system module 16, and switches off a path between the temperature detection terminal of the second battery 12 and the temperature detection terminal of the power consumption system module 16, and the power consumption system module 16 detects whether the current temperature of the first battery 11 meets a safety range in real time, so as to ensure that the mobile terminal normally operates.

Before the mobile terminal is turned on, the second analog switch circuit 51 receives the first level signal output by the comparison circuit 15, and controls to conduct a path between the temperature detection end of the first battery 11 and the temperature detection end of the power consumption system module 16 or conduct a path between the temperature detection end of the second battery 12 and the temperature detection end of the power consumption system module 16 according to the first level signal; after the mobile terminal is started, the second analog switch circuit 51 receives a fourth level signal output by a fourth control end of the electric system module 16, and controls and conducts a path between a temperature detection end of the first battery 11 and a temperature detection end of the electric system module 16 or a path between a temperature detection end of the second battery 12 and a temperature detection end of the electric system module 16 according to the fourth level signal, by the method, before the mobile terminal is started, one path of temperature detection path is selected by the output control of the comparison circuit 15, the current temperature of the battery to be detected is detected, and the mobile terminal can be normally started only when the current temperature of the battery to be detected accords with a safety range; after the mobile terminal is started, the output of the power utilization system module 16 controls and selects one temperature detection path to continuously detect the current temperature of the power supply battery, and the mobile terminal can continuously and normally work only when the temperature of the power supply battery is always in accordance with the safety range.

As shown in fig. 6, which is a block diagram of the overall structure of the mobile terminal, the first switch circuit 13 and the second switch circuit 14 are both turned off by default, the second analog switch circuit 51 receives the first level signal output by the comparator circuit 15 by default, and the path between the temperature detection terminal of the first battery 11 and the temperature detection terminal of the power consumption system module 16 is turned on by default.

Before the mobile terminal is turned on, the first analog switch circuit 21 turns on a path between the comparison circuit 15 and the first switch circuit 13 and turns on a path between the comparison circuit 15 and the second switch circuit 14, the comparison circuit 15 obtains the current voltage of the second battery 12, compares the current voltage with a preset reference voltage, and outputs a first level signal for controlling the first switch circuit 13 and the second switch circuit 14.

For example, if the current voltage of the second battery 12 is greater than the preset reference voltage, that is, the electric quantity of the second battery 12 is sufficient, the first level signal output by the comparison circuit 15 is a high level signal, the second switch circuit 14 switches on the path between the second battery 12 and the power consumption system module 16 under the control of the high level signal, the first switch circuit 13 keeps switching off the path between the first battery 11 and the power consumption system module 16 under the control of the high level signal, meanwhile, the second analog switch circuit 51 receives the high level signal output by the comparison circuit 15, controls to switch on the path between the temperature detection end of the second battery 12 and the temperature detection end of the power consumption system module 16, and switches off the path between the temperature detection end of the first battery 11 and the temperature detection end of the power consumption system module 16, the power consumption system module 16 detects whether the current temperature of the second battery 12 is in a safe range, and if the current temperature of the second battery 12 is in the safe range, the second battery 12 supplies power to the power consumption system module 16, and the mobile terminal is normally powered on; if the current temperature of the second battery 12 exceeds the safety range, the second battery 12 cannot supply power to the power consumption system module 16, and the mobile terminal cannot be normally powered on.

For example, if the current voltage of the second battery 12 is less than the preset reference voltage, that is, the power of the second battery 12 is insufficient, the first level signal output by the comparison circuit 15 is a low level signal, the second switch circuit 14 keeps disconnecting the path between the second battery 12 and the power consumption system module 16 under the control of the low level signal, the first switch circuit 13 switches on the path between the first battery 11 and the power consumption system module 16 under the control of the low level signal, meanwhile, the second analog switch circuit 51 receives the low level signal output by the comparison circuit 15, controls to keep switching on the path between the temperature detection end of the first battery 11 and the temperature detection end of the power consumption system module 16, and keeps disconnecting the path between the temperature detection end of the second battery 12 and the temperature detection end of the power consumption system module 16, the power consumption system module 16 detects whether the current temperature of the first battery 11 is within a safe range, if the current temperature of the first battery 11 is within the safe range, the first battery 11 supplies power to the power consumption system module 16, and the mobile terminal is normally powered; if the current temperature of the first battery 11 exceeds the safety range, the first battery 11 cannot supply power to the power consumption system module 16, and the mobile terminal cannot be normally powered on.

After the mobile terminal is powered on, the electric system module 16 sends a high-level control signal to the first switch circuit module 21 through the third control terminal, so that the first analog switch circuit 21 conducts a path between the first switch circuit 13 and the ground and conducts a path between the second switch circuit 14 and the ground to shield the control of the comparison circuit 15 on the first switch circuit 13 and the second switch circuit 14, at this time, the first switch circuit 13 is controlled only by the first control terminal of the electric system module 16, and the second switch circuit 14 is controlled only by the second control terminal of the electric system module 16; the control signal sent by the power consumption system module 16 to the second analog switch circuit 51 through the fifth control terminal is a high level signal, after the second analog switch circuit 51 receives the high level signal, a path between the second analog switch circuit 51 and the fourth control terminal of the power consumption system module 16 is switched on, and the second analog switch circuit 51 switches on a temperature detection path between the power consumption system module 16 and the current power supply battery according to the fourth level signal output by the fourth control terminal of the power consumption system module 16.

If the current power supply battery is the second battery 12, the comparison circuit 15 outputs a high level signal to the level conversion circuit 31, the level conversion circuit 31 converts the high level signal and sends the converted signal to the power utilization system module 16, the power utilization system module 16 receives the converted signal and outputs a third level signal through the second control end to control the second switch circuit 14 to be continuously switched on, and the first control end outputs a second level signal to control the first switch circuit 13 to be continuously switched off; meanwhile, a fourth level signal output by a fourth control terminal of the power consumption system module 16 is a high level signal, the second analog switch circuit 51 controls to continuously switch on a path between the temperature detection terminal of the second battery 12 and the temperature detection terminal of the power consumption system module 16 and continuously switch off a path between the temperature detection terminal of the first battery 11 and the temperature detection terminal of the power consumption system module 16, the power consumption system module 16 detects the current temperature of the second battery 12 in real time, as long as the current temperature of the second battery 12 is within a safety range, the second battery 12 can continuously supply power to the power consumption system module 16, and the mobile terminal works normally.

If the second battery 12 is not enough after continuously supplying power for a period of time, the comparing circuit 15 outputs a low level signal to the level converting circuit 31, the level converting circuit 31 converts the low level signal and sends the converted signal to the power consumption system module 16, and the power consumption system module 16 outputs a third level signal through the second control end after receiving the converted signal to control the second switch circuit 14 to be switched off, and outputs a second level signal through the first control end to control the first switch circuit 13 to be switched on; meanwhile, a fourth level signal output by a fourth control end of the power consumption system module 16 is a low level signal, the second analog switch circuit 51 controls to switch on a path between a temperature detection end of the first battery 11 and a temperature detection end of the power consumption system module 16 and switch off a path between a temperature detection end of the second battery 12 and a temperature detection end of the power consumption system module 16, the power consumption system module 16 detects the current temperature of the first battery 11 in real time, if the current temperature of the first battery 11 is within a safety range, the first battery 11 is used for supplying power to the power consumption system module 16, and the mobile terminal normally works to realize that power is not switched off.

Optionally, as shown in fig. 7, the mobile terminal further includes a detection path for detecting whether the battery exists, the ID1 terminal of the first battery 11 is electrically connected to the first input terminal of the power consumption system module 16, and the power consumption system module 16 determines the existence state of the first battery 11 through the ID1 terminal of the first battery 11 after the mobile terminal is normally powered on; the ID2 terminal of the second battery 12 is electrically connected to the second input terminal of the power consumption system module 16, and the power consumption system module 16 determines the existence state of the second battery 12 through the ID2 terminal of the second battery 12 after the mobile terminal is normally powered on.

For example, if the ID1 terminal of the first battery 11 is a high signal, it is determined that the first battery 11 exists, and if the ID2 terminal of the second battery 12 is a high signal, it is determined that the second battery 12 exists.

In an alternative embodiment, as shown in fig. 8, the comparison circuit 15 includes a comparator M1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, and a first capacitor C1, wherein:

a first end of the comparator M1 is electrically connected to one end of the first resistor R1 and one end of the fourth resistor R4, respectively, a second end of the comparator M1 is electrically connected to one end of the first capacitor C1, a third end of the comparator M1 is electrically connected to the other end of the first capacitor C1 and ground, respectively, and a fourth end of the comparator M1 is electrically connected to the other end of the fourth resistor R4 and one end of the fifth resistor R5, respectively, and serves as an output end of the comparison circuit 15;

the other end of the first resistor R1 is electrically connected with the other end of the fourth resistor R4 and is used as an input end of the comparison circuit 15;

the other end of the second resistor R2 is electrically connected with one end of the third resistor R3;

the other end of the third resistor R3 and the other end of the fifth resistor R5 are both grounded.

It should be noted that, the embodiment of the present invention provides an embodiment of the present invention, in which the preset reference voltage may be the internal reference voltage of the comparator M1, the preset reference voltage may be 3.6V, and may also be 3.0V, and it is related to the model of the comparator M1 used, and the embodiment of the present invention does not limit this.

Specifically, the VDD terminal of the comparator M1 serves as the first terminal of the comparator M1, the OD terminal of the comparator M1 serves as the second terminal of the comparator M1, the VSS terminal of the comparator M1 serves as the third terminal of the comparator M1, and the OUT terminal of the comparator M1 serves as the fourth terminal of the comparator M1. The first resistor R1, the second resistor R2, the third resistor R3 and the fourth resistor R4 jointly form a voltage division circuit, divide the current voltage VBATT2 of the second battery 12, and input the divided voltage to the VVD end of the comparator M1, so that the voltage input by the VDD end meets the normal working range of the comparator M1; the VVD terminal of the comparator M1 inputs the divided current voltage VBATT2 of the second battery 12, compares the divided current voltage VBATT with a preset reference voltage, and outputs a first level signal CP _ OUT _ S.

For example, if the current voltage VBATT2 of the second battery 12 is greater than the preset reference voltage 3.6V of the comparator M1, the output first level signal CP _ OUT _ S is a high level signal; if the current voltage VBATT2 of the second battery 12 is less than the preset reference voltage 3.6V of the comparator M1, the output first level signal CP _ OUT _ S is a low level signal.

The comparison circuit 15 is configured to input a current voltage of the second battery 12 and a preset reference voltage, compare the current voltage of the second battery 12 with the preset reference voltage, if the electric quantity of the second battery 12 is sufficient, the current voltage of the second battery 12 is greater than the preset reference voltage, and output a first level signal as a high level signal; if the electric quantity of the second battery 12 is insufficient, the current voltage of the second battery 12 is smaller than the preset reference voltage, and the output first level signal is a low level signal. Before the mobile terminal is turned on, the comparison circuit 15 inputs a first level signal to the first switch circuit 13 and the second switch circuit 14, respectively, to control the first switch circuit 13 to turn on or off a path between the first battery 11 and the power system module 16, and to control the second switch circuit 14 to turn on or off a path between the second battery 12 and the power system module 16.

In an alternative embodiment, as shown in fig. 9 and 10, the first switching circuit 13 includes a first switching tube Q1, a second switching tube Q2, a third switching tube Q3, a fourth switching tube Q4, a fifth switching tube Q5, a sixth resistor R6, a seventh resistor R7, and a second capacitor C2, wherein:

a first end of the first switching tube Q1 is used as a first end of the first switching circuit 13, a second end of the first switching tube Q1 is respectively and electrically connected with one end of the sixth resistor R6, one end of the second capacitor C2, a second end of the second switching tube Q2 and one end of the seventh resistor R7, and a control end of the first switching tube Q1 is respectively and electrically connected with the other end of the sixth resistor R6, the other end of the second capacitor C2, a control end of the second switching tube Q2 and a first end of the third switching tube Q3;

a first end of the second switch tube Q2 is used as a second end of the first switch circuit 13;

the control end of the third switching tube Q3 is electrically connected with the other end of the sixth resistor R6, the first end of the fourth switching tube Q4 and the first end of the fifth switching tube Q5 respectively, and the second end of the third switching tube Q3 is grounded;

the control end of the fourth switching tube Q4 is electrically connected with the first control end of the power utilization system module 16, and the second end of the fourth switching tube Q4 is grounded;

the control terminal of the fifth switch Q5 is used as the third terminal of the first switch circuit 13, and the second terminal of the fifth switch Q5 is grounded.

Optionally, in the embodiment of the present invention, the first switch tube Q1 and the second switch tube Q2 are high-power PMOS transistors, the third switch tube Q3 and the fourth switch tube Q4 are NPN transistors, and the fifth switch tube Q5 is an NMOS transistor.

Specifically, a first end D of the first switch tube Q1 is electrically connected to a positive pole (+) of the first battery 11 and is configured to receive a current voltage VBATT1 of the first battery 11, a first end D of the second switch tube Q2 is electrically connected to a power supply end of the power consumption system module 16 and is configured to provide a power supply voltage VBATT for the power consumption system module 16, a control end B of the fourth switch tube Q4 is electrically connected to a first control end of the power consumption system module 16 and is configured to receive a second level signal BAT1_ SEL of the first control end of the power consumption system module 16, a control end G of the fifth switch tube Q5 is electrically connected to an output end of the comparison circuit 15 and is configured to receive a first level signal CP _ OUT _ S output by an output end of the comparison circuit 15, and the second capacitor C2 is configured to stabilize a level signal in the first switch circuit 13.

For example, before the mobile terminal is turned on, the first switching tube Q1, the second switching tube Q2, the third switching tube Q3, the fourth switching tube Q4 and the fifth switching tube Q5 are all turned off, after the G end of the fifth switching tube Q5 receives the first level signal CP _ OUT _ S output by the comparison circuit 15, if the first level signal CP _ OUT _ S is a low level signal, the CP _ OUT _ S controls the fifth switching tube Q5 to be turned on, so as to turn on the first switching tube Q1 and the second switching tube Q2, that is, turn on a path between the first battery 11 and the electric system module 16, and supply power to the electric system module 16 by using the current voltage VBATT1 of the first battery 11; if the first level signal CP _ OUT _ S is a high level signal, CP _ OUT _ S controls the fifth switching tube Q5 to be kept off, the first switching tube Q1 and the second switching tube Q2 are also kept off, and the first battery 11 cannot supply power to the power consumption system module 16.

After the mobile terminal is started, the terminal B of the fourth switching tube Q4 receives a second level signal BAT1_ SEL output by the first control terminal of the power consumption system module 16, if the second level signal BAT1_ SEL is a low level signal, the second level signal BAT1_ SEL controls the third switching tube Q3 and the fourth switching tube Q4 to be conducted, so that the first switching tube Q1 and the second switching tube Q2 are conducted, and the current voltage VBATT1 of the first battery 11 is used for continuously supplying power to the power consumption system module 16; if the second level signal BAT1_ SEL is a high level signal, the second level signal BAT1_ SEL controls the third switching tube Q3 and the fourth switching tube Q4 to be kept disconnected, the first switching tube Q1 and the second switching tube Q2 are also kept disconnected, and the first battery 11 cannot supply power to the power consumption system module 16.

The first switch circuit 13 is configured to disconnect the path between the first battery 11 and the power system module 16 in a default state, and to connect or disconnect the path between the first battery 11 and the power system module 16 according to the first level signal output by the comparison circuit 15, that is, when the second battery 12 is insufficient in power and the first battery 11 is sufficient in power, the first level signal output by the comparison circuit 15 is a low level signal, the low level signal controls the first switch circuit 13 to connect the path between the first battery 11 and the power system module 16, and controls the second switch circuit 14 to disconnect the path between the second battery 12 and the power system module 16, so that when the second battery 12 is insufficient in power and the first battery 11 is sufficient in power, the power system module 16 is powered by the first battery 11.

In an alternative embodiment, as shown in fig. 11 and 12, the second switching circuit 14 includes a sixth switching tube Q6, a seventh switching tube Q7, an eighth switching tube Q8, a ninth switching tube Q9, an eighth resistor R8, and a third capacitor C3, wherein:

a first end of a sixth switching tube Q6 is used as a first end of the second switching circuit 14, a second end of the sixth switching tube Q6 is respectively electrically connected with one end of an eighth resistor R8, one end of a third capacitor C3 and a second end of a seventh switching tube Q7, and a control end of the sixth switching tube Q6 is respectively electrically connected with the other end of the eighth resistor R8, the other end of the third capacitor C3, a control end of the seventh switching tube Q7, a first end of the eighth switching tube Q8 and a first end of a ninth switching tube Q9;

a first end of the seventh switching tube Q7 is used as a second end of the second switching circuit 14;

the control end of the eighth switching tube Q8 is electrically connected with the second control end of the power consumption system module 16, and the second end of the eighth switching tube Q8 is grounded;

the control terminal of the ninth switching tube Q9 is used as the third terminal of the second switching circuit 14, and the second terminal of the ninth switching tube Q9 is grounded.

Optionally, in the embodiment of the present invention, the sixth switching tube Q6 and the seventh switching tube Q7 are high-power PMOS transistors, the eighth switching tube Q8 is an NPN-type triode, and the ninth switching tube Q9 is an NMOS tube.

Specifically, the first end D of the sixth switching tube Q6 is electrically connected to the positive pole (+) of the second battery 12 for receiving the current voltage VBATT2 of the second battery 12, the first end D of the seventh switching tube Q7 is electrically connected to the power supply end of the power consumption system module 16 for providing the power supply voltage VBATT for the power consumption system module 16, the control end B of the eighth switching tube Q8 is electrically connected to the second control end of the power consumption system module 16 for receiving the third level signal BAT2_ SEL of the second control end of the power consumption system module 16, the control end G of the ninth switching tube Q9 is electrically connected to the output end of the comparison circuit 15 for receiving the first level signal CP _ OUT _ S output by the output end of the comparison circuit 15, and the third capacitor C3 is used for stabilizing the level signal in the second switching circuit 14.

For example, before the mobile terminal is turned on, the sixth switching tube Q6, the seventh switching tube Q7, the eighth switching tube Q8 and the ninth switching tube Q9 are all turned off, after the G end of the ninth switching tube Q9 receives the first level signal CP _ OUT _ S output by the comparison circuit 15, if the first level signal CP _ OUT _ S is a high level signal, the CP _ OUT _ S controls the ninth switching tube Q9 to be turned on, so that the sixth switching tube Q6 and the seventh switching tube Q7 are turned on, that is, a path between the second battery 12 and the electric system module 16 is turned on, and the current voltage VBATT2 of the second battery 12 is used to supply power to the electric system module 16; if the first level signal CP _ OUT _ S is a low level signal, CP _ OUT _ S controls the ninth switching tube Q9 to be kept off, the sixth switching tube Q6 and the seventh switching tube Q7 are also kept off, and the second battery 12 cannot supply power to the power consumption system module 16.

After the mobile terminal is started, the B end of the eighth switch tube Q8 receives a third level signal BAT2_ SEL output by the second control end of the power consumption system module 16, and if the third level signal BAT2_ SEL is a high level signal, the third level signal BAT2_ SEL controls the eighth switch tube Q8 to be conducted, so that the sixth switch tube Q6 and the seventh switch tube Q7 are conducted, and the second battery 12 continuously supplies power to the power consumption system module 16; if the third level signal BAT2_ SEL is a low level signal, the third level signal BAT2_ SEL controls the eighth switch tube Q8 to be kept off, the sixth switch tube Q6 and the seventh switch tube Q7 are also kept off, and the second battery 12 cannot supply power to the power consumption system module 16.

The second switch circuit 14 is configured to disconnect the path between the second battery 12 and the power system module 16 in a default state, and turn on or disconnect the path between the second battery 12 and the power system module 16 according to the first level signal output by the comparison circuit 15, that is, when the power amount of the second battery 12 is sufficient, the first level signal output by the comparison circuit 15 is a high level signal, the high level signal controls the second switch circuit 14 to turn on the path between the second battery 12 and the power system module 16, and controls the first switch circuit 13 to turn off the path between the first battery 11 and the power system, so that when the power amount of the second battery 12 is sufficient, the second battery 12 supplies power to the power system module 16.

In a specific embodiment, as shown in fig. 13, a schematic circuit structure diagram of the connection between the first switch circuit 13 and the second switch circuit 14 is shown, where both the first switch circuit 13 and the second switch circuit 14 are turned off by default.

In an alternative embodiment, as shown in fig. 14 and 15, the first analog switch circuit 21 includes a first double-way single-pole double-throw switch K1, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a first diode D1, a second diode D2, and a fourth capacitor C4, wherein:

a first end of the first double-pole double-throw switch K1 is electrically connected with one end of the ninth resistor R9 and one end of the fourth capacitor C4, respectively, a second end of the first double-pole double-throw switch K1 is electrically connected with one end of the tenth resistor R10, a third end of the first double-pole double-throw switch K1 serves as a first end of the first analog switch circuit 21, a fourth end of the first double-pole single-throw switch K1 is electrically connected with a third control end of the power utilization system module 16 and one end of the eleventh resistor R11, respectively, a fifth end of the first double-pole single-throw switch K1 serves as a second end of the first analog switch circuit 21, and a sixth end of the first double-pole single-throw switch K1 is grounded;

the other end of the ninth resistor R9 is respectively connected to the cathode of the first diode D1 and the cathode of the second diode D2;

the other end of the tenth resistor R10 serves as a third end of the first analog switch circuit 21;

the other end of the eleventh resistor R11 and the other end of the fourth capacitor C4 are both grounded;

an anode of the first diode D1 is electrically connected to a system supply voltage VPH _ PWR;

the anode of the second diode D2 is electrically connected to the anode (+) of the second battery 12.

It should be noted that, in the embodiment of the present invention, as shown in fig. 16, the mobile terminal includes: the mobile terminal comprises a charging chip 161, an inductor 162, a battery 163 and an electric system module 16, wherein the battery chip 161 can be charged in two modes of the battery 163 and a charger, the charging chip 161 supplies power to the electric system module through the inductor, a system power supply voltage VBAT _ DET is used for system power inside the mobile terminal, the voltage of the charger outputs VPH _ PWR after passing through the charging chip 161, and the battery 163 outputs VPH _ PWR after passing through the charging chip 161 after being switched.

Specifically, the current voltage VBATT2 of the second battery 12 and the system supply voltage VPH _ PWR are used together as the supply voltage VBAT _ DET of the first analog switch circuit 21, the V + terminal of the first double-pole double-throw switch K1 is used as the first terminal of the first double-pole double-throw switch K1, the NO-2 terminal of the first double-pole double-throw switch K1 is used as the second terminal of the first double-pole double-throw switch K1, the COM2 terminal of the first double-pole double-throw switch K1 is used as the third terminal of the first double-pole double-throw switch K1, the IN2 terminal of the first double-pole double-throw switch K1 is used as the fourth terminal of the first double-pole double-throw switch K1, the NC-2 terminal of the first double-pole double-throw switch K1 is used as the fifth terminal of the first double-pole double-throw switch K1, and the NC-2 terminal of the first double-pole double-throw switch K1 is used as the sixth terminal GND of the first double-pole double-throw switch K1.

The IN2 terminal of the first double-pole double-throw switch K1 is configured to receive a control signal CP _ OUT _ EN sent by the third control terminal of the power consumption system module 16, and control the first double-pole double-throw switch K1 to selectively turn on a path between the NC-2 terminal and the COM2 terminal of the first double-pole double-throw switch K1 or turn on a path between the NO-2 terminal and the COM2 terminal of the first double-pole double-throw switch K1 according to the control signal, that is, if the control signal CP _ OUT _ EN sent by the third control terminal is a low level signal, the first double-pole double-throw switch K1 selectively turns on the paths between the NC-2 terminal and the COM2 terminal, so that the first analog switch circuit 21 receives the first level signal CP _ OUT _ S output by the comparison circuit 15 and outputs CP _ OUT to the first switch circuit 13 and the second switch circuit 14; if the control signal CP _ OUT _ EN sent by the third control terminal is a high level signal, the first double-way single-pole double-throw switch K1 selectively turns on the path between the NO-2 terminal and the COM2 terminal, so that the first analog switch circuit 21 turns on the path between the first switch circuit 13 and the ground, and turns on the path between the second switch circuit 14 and the ground, so as to shield the control action of the first level signal CP _ OUT _ S output by the receiving and comparing circuit 15 on the first switch circuit 13 and the second switch circuit 14.

The first analog switch circuit 21 uses a first double-pole double-throw switch K1, wherein one single-pole double-throw switch is suspended, the other single-pole double-throw switch functions, the fourth terminal of the first double-pole double-throw switch K1 receives a control signal sent by the third control terminal of the electric system module 16, before the mobile terminal is turned on, the third control terminal of the electric system module 16 sends a low level signal, and after the fourth terminal of the first double-pole double-throw switch K1 receives the low level signal, the fifth terminal of the first double-pole double-throw switch K1 and the output terminal of the comparison circuit 15 are controlled to be connected; when the mobile terminal is powered on, the third control terminal of the power system module 16 sends a high level signal, and the fourth terminal of the first double-way single-pole double-throw switch K1 receives the high level signal to control and conduct a path between the sixth terminal of the first double-way single-pole double-throw switch K1 and the ground. By the above method, the timing at which the first analog switch circuit 21 switches can be accurately controlled.

In an alternative embodiment, as shown in fig. 17, the level shift circuit 31 includes a tenth switch Q10 and a twelfth resistor R12, wherein:

a control end of the tenth switching tube Q10 is used as an input end of the level shift circuit 31, a first end of the tenth switching tube Q10 is electrically connected with one end of the twelfth resistor R12 and is used as an output end of the level shift circuit 31, and a second end of the tenth switching tube Q10 is grounded;

the other end of the twelfth resistor R12 is electrically connected to the constant voltage VREG _ L9A _1P 8.

Specifically, the control terminal G of the tenth switching tube Q10 is used to input the first level signal CP _ OUT _ S output by the comparing circuit 15, the control terminal D of the tenth switching tube Q10 is used to output the level signal POWER _ DET converted by the level converting circuit 31, and output the level signal POWER _ DET converted by 1 to the input terminal of the POWER consumption system module, and the constant voltage VREG _ L9A _1P8 is an output voltage of a constant POWER supply after the system is started, and is used to provide a pull-up voltage when the level converting circuit 31 performs level conversion.

Optionally, in the embodiment of the present invention, the tenth switching tube Q10 is an NMOS tube.

In an alternative embodiment, as shown in fig. 18 and 19, the second analog switch circuit 51 includes a second double-way single-pole double-throw switch K2, a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15, and a fifth capacitor C5, wherein:

a first end of the second double-pole double-throw switch K2 is electrically connected with one end of the thirteenth resistor R13 and one end of the fifth capacitor C5, respectively, a second end of the second double-pole double-throw switch K2 is used as a third end of the second analog switch circuit 51, a third end of the second double-pole double-throw switch K2 is used as a first end of the second analog switch circuit 51, a fourth end of the second double-pole single-throw switch K2 is electrically connected with one end of the fourteenth resistor R14 and a seventh end of the second double-pole single-throw switch K2, respectively, a fifth end of the second double-pole single-throw switch K2 is used as a second end of the second analog switch circuit 51, a sixth end of the second double-pole double-throw switch K2 is used as a fourth end of the second analog switch circuit 51, an eighth end of the second double-pole double-throw switch K2 is electrically connected with one end of the fifteenth resistor R15 and is used as a control end of the second analog switch circuit 51, and the second double-pole double-throw switch K2 is used as a ninth end of the second analog switch circuit 51, and the ninth double-pole double-throw switch K2 is grounded;

the other end of the thirteenth resistor R13 is electrically connected to the cathode of the first diode D1 and the cathode of the second diode D2, respectively;

the other end of the fourteenth resistor R14, the other end of the fifteenth resistor R15 and the other end of the fifth capacitor C5 are all grounded.

Specifically, the current voltage VBATT2 of the second battery 12 and the system supply voltage VPH _ PWR are commonly used as the supply voltage VBAT _ DET of the second analog switch circuit 51, the V + terminal of the second double-pole double-throw switch K2 is used as the first terminal of the second double-pole single-throw switch K2, the NO-1 terminal of the second double-pole single-throw switch K2 is used as the second terminal of the second double-pole single-throw switch K2, the COM1 terminal of the second double-pole double-throw switch K2 is used as the second terminal of the second double-pole single-throw switch K2, the IN1 terminal of the second double-pole double-throw switch K2 is used as the fourth terminal of the second double-pole single-throw switch K2, the NC-1 terminal of the second double-pole double-throw switch K2 is used as the fifth terminal of the second double-pole single-throw switch K2, the NO2 terminal of the second double-pole double-throw switch K2 is used as the sixth terminal of the second double-pole double-throw switch K2, the NC-pole double-throw switch K2 terminal of the second double-throw switch K2, the second double-pole double-throw switch K2 is used as the second double-throw NC-throw 2, the GND terminal of the second double-pole double-throw 2, the second double-throw 2 of the second double-pole double-throw 2.

The IN2 terminal of the second double-circuit single-pole double-throw switch K2 is configured to control to conduct a path between the NC-2 terminal and the COM2 terminal of the second double-circuit single-pole double-throw switch K2 according to a control signal BATT _ THERM _ CTRL output by the fifth control terminal of the power system module 16, that is, to control an output signal BATT _ THERM _ SEL at the COM2 terminal by using a first level signal CP _ OUT _ S of the comparison circuit 15 input by the NC-2 terminal, or to control to conduct a path between the NO-2 terminal and the COM2 terminal of the second double-circuit single-pole double-throw switch K2, that is, to control an output signal BATT _ CTRL at the COM2 terminal by using a fourth level signal THERM _ SW output by the fourth control terminal of the power system module 16 input by the NO-2 terminal; the COM2 end and the IN1 end of the second double-circuit single-pole double-throw switch K2 are connected, so that a signal BATT _ THERM _ SEL at the COM2 end is input to the IN1 end, and the IN1 end of the second double-circuit single-pole double-throw switch K2 is used for controlling and conducting a path between the NC-1 end and the COM1 end of the second double-circuit single-pole double-throw switch K2 according to the signal BATT _ THERM _ SEL, namely, a path between the temperature detection end BATT _ THERM1 of the first battery 11 and the temperature detection end t _ THERM of the power system module 16, so that the power system module 16 obtains the current temperature of the first battery 11, or controlling and conducting a path between the NO-1 end and the COM1 end of the second double-pole single-throw switch K2, namely, so that the temperature detection end t _ THERM2 of the second battery 12 and the temperature detection end t _ THERM of the power system module 16 are conducted, so that the current temperature of the power system module 12 obtains the current temperature of the second battery 12.

The second analog switch circuit 51 adopts the second double-way single-pole double-throw switch K2, and the eighth end of the second double-way single-pole double-throw switch K2 is used as the control end of the second analog switch circuit 51, before the mobile terminal is turned on, the eighth end of the second double-way single-pole double-throw switch K2 is a low level signal, and the path between the ninth end of the second double-way single-pole double-throw switch K2 and the seventh end of the second double-way single-pole double-throw switch K2 is controlled to be conducted, so that the comparison circuit 15 controls the selection of the temperature detection path; after the mobile terminal is powered on, the eighth end of the second double-way single-pole double-throw switch K2 is a high-level signal, and a path between the sixth end of the second double-way single-pole double-throw switch K2 and the seventh end of the second double-way single-pole double-throw switch K2 is controlled to be conducted, so that the temperature detection path is controlled to be selected by the electric system module 16.

As shown in fig. 20, a schematic structural diagram of an overall circuit of the mobile terminal is shown, and the following describes in detail the power swapping process of the mobile terminal provided by the embodiment of the present invention in the power-on process and after power-on with reference to fig. 20.

Starting up conditions of the mobile terminal:

before the mobile terminal is turned on, a preset reference voltage of a comparator M1 is set to be 3.6V, a current voltage VBATT2 of the second battery 12 passes through a voltage dividing circuit formed by a first resistor R1, a second resistor R2, a third resistor R3 and a fourth resistor R4 and then is input to a VDD terminal of the comparator M1, the comparator M1 compares the VBATT2 with the preset reference voltage 3.6V, when the VBATT2 is greater than 3.6V, a first level signal CP _ OUT _ S output by the comparator M1 is a high level signal, the first level signal CP _ OUT _ S is input to an NC-2 terminal of a first double-pole double-throw switch K1, the first double-pole double-throw switch K1 outputs CP _ OUT from a COM2 terminal of the first double-pole double-throw switch K1 to a ninth terminal of a fifth switch Q5 IN the first switch circuit 13 and a ninth switch G14 IN the second switch Q5 under the control signal CP _ EN of the power system module 16, the first switch circuit 13 is controlled to disconnect the path between the positive pole (+) of the first battery 11 and the power system module 16, the second switch circuit 14 is controlled to connect the path between the positive pole (+) of the second battery 12 and the power system module 16, meanwhile, the first level signal CP _ OUT _ S is also input to the NC-2 terminal of the second double-way single-pole double-throw switch K2, the output signal BATT _ THERM _ SEL of the COM2 terminal of the second double-way single-pole double-throw switch K2 is input to the IN1 terminal, the path between the NC-1 terminal and the COM1 terminal of the second double-way single-pole double-throw switch K2, that is, the path between the temperature detection terminal BATT _ THERM2 of the second battery 12 and the temperature detection terminal BATT _ THERM of the power system module 16 is controlled, when the current temperature T2 of the second battery 12 is within the safety range, the second battery 12 supplies power to the power system module 16, and normally starting the mobile terminal.

When VBATT2 is smaller than 3.6V, the first level signal CP _ OUT _ S output by the comparator M1 is a low level signal, the first level signal CP _ OUT _ S is input to the NC-2 terminal of the first double-pole double-throw switch K1, the COM2 terminal of the first double-pole double-throw switch K1 outputs CP _ OUT to the G terminal of the fifth switching tube Q5 IN the first switching circuit 13 and the G terminal of the ninth switching tube IN the second switching circuit 14 under the control of the control signal CP _ OUT _ EN at the third control terminal of the power system module 16, the first switching circuit 13 is controlled to conduct a path between the positive pole (+) of the first battery 11 and the power system module 16, and controlling the second switch circuit 14 to disconnect the path between the positive pole (+) of the second battery 12 and the power system module 16, meanwhile, the first level signal CP _ OUT _ S is also input to the NC-2 terminal of the second double-way single-pole double-throw switch K2, the output signal BATT _ THERM _ SEL of the COM2 terminal of the second double-way single-pole double-throw switch K2 is input to the IN1 terminal, and the path for conducting the NO-1 terminal and the COM1 terminal of the second double-way single-pole double-throw switch K2, that is, the path for conducting the temperature detection terminal BATT _ THERM1 of the first battery 11 and the temperature detection terminal BATT _ THERM of the power system module 16 is controlled, when the current temperature T1 of the first battery 11 is within the safety range, the first battery 11 supplies power to the power system module 16, and the mobile terminal is normally powered on.

And (3) battery replacement condition of the mobile terminal:

after the mobile terminal is powered on, the second battery 12 supplies POWER, and the control terminal G of the tenth switching tube Q10 in the level shifter circuit 31 inputs the first level signal CP _ OUT _ S of the comparator circuit 15, and converts the high level signal CP _ OUT _ S, and outputs the converted level signal POWER _ DET to the input terminal of the POWER consumption system module 16. When the electric quantity of the second battery 12 is insufficient, the first level signal CP _ OUT _ S becomes a low level signal, the input end of the POWER utilization system module 16 receives the level signal POWER _ DET converted from the low level signal, the first control end controls to output the second level signal BAT1_ SEL as a low level signal, the third switching tube Q3 and the fourth switching tube Q4 are conducted, so that the first switching tube Q1 and the second switching tube Q2 are conducted, and the second battery 12 is conducted to be a POWER supply path of the POWER utilization system module 16; the second control end controls to output a third level signal BAT2_ SEL as a low level signal, the eighth switch tube Q8 is disconnected, the sixth switch tube Q6 and the seventh switch tube Q7 are further disconnected, and a path for supplying power to the power utilization system module 16 by the second battery 12 is cut off. Meanwhile, a fourth level signal THERM _ CTRL _ SW of the power system module 16 is input to the NO-2 end of the second double-pole double-throw switch K2, and an output signal BATT _ THERM _ SEL of the COM2 end of the second double-pole double-throw switch K2 is input to the IN1 end to control and conduct a path between the NO-1 end and the COM1 end of the second double-pole double-throw switch K2, that is, a path between the temperature detection end BATT _ THERM1 of the first battery 11 and the temperature detection end BATT _ THERM of the power system module 16, so that when the current temperature T1 of the first battery 11 is within the safety range, the first battery 11 IN the switch continues to supply power to the power system module 16, and the mobile terminal does not switch power.

Various modifications and alterations of this invention may be made by those skilled in the art without departing from the spirit and scope of this invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A mobile terminal is characterized by comprising a first battery, a second battery, a first switch circuit, a second switch circuit, a comparison circuit and an electric system module, wherein:

2. The mobile terminal of claim 1, wherein the comparison circuit comprises a comparator, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, and a first capacitor, wherein:

a first end of the comparator is electrically connected with one end of the first resistor and one end of the fourth resistor respectively, a second end of the comparator is electrically connected with one end of the first capacitor, a third end of the comparator is electrically connected with the other end of the first capacitor and ground respectively, and a fourth end of the comparator is electrically connected with the other end of the fourth resistor and one end of the fifth resistor respectively to serve as an output end of the comparison circuit;

3. The mobile terminal of claim 1, wherein the first switching circuit comprises a first switching tube, a second switching tube, a third switching tube, a fourth switching tube, a fifth switching tube, a sixth resistor, a seventh resistor and a second capacitor, wherein:

a control end of the third switching tube is electrically connected with the other end of the seventh resistor, a first end of the fourth switching tube and a first end of the fifth switching tube respectively, and a second end of the third switching tube is grounded;

4. The mobile terminal of claim 1, wherein the second switching circuit comprises a sixth switching tube, a seventh switching tube, an eighth switching tube, a ninth switching tube, an eighth resistor and a third capacitor, wherein:

5. The mobile terminal of claim 1, further comprising a first analog switching circuit, wherein:

6. The mobile terminal of claim 5, wherein the first analog switch circuit comprises a first double-way single-pole double-throw switch, a ninth resistor, a tenth resistor, an eleventh resistor, a first diode, a second diode, and a fourth capacitor, wherein:

7. The mobile terminal of claim 5, further comprising a level shift circuit;

8. The mobile terminal of claim 7, wherein the level shift circuit comprises a tenth switch tube and a twelfth resistor, wherein:

9. The mobile terminal of claim 6, further comprising a second analog switching circuit, wherein:

the second analog switch circuit is configured to receive the first level signal output by the comparison circuit before the mobile terminal is powered on, turn on a path between the temperature detection end of the first battery and the temperature detection end of the power consumption system module, or turn on a path between the temperature detection end of the second battery and the temperature detection end of the power consumption system module, and receive the fourth level signal output by the power consumption system module after the mobile terminal is powered on, turn on a path between the temperature detection end of the first battery and the temperature detection end of the power consumption system module, or turn on a path between the temperature detection end of the second battery and the temperature detection end of the power consumption system module.

10. The mobile terminal of claim 9, wherein the second analog switch circuit comprises a second double-way single-pole double-throw switch, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, and a fifth capacitor, wherein: