Power supply control system and method and terminal equipment

Abstract

The invention discloses a power supply control system and method and terminal equipment. The system comprises an interface module, a power management unit (PMU), a battery, a load system and a power supply system, the power supply system comprises a charge pump system and an inductance switch module, the first end of the inductance switch module is connected with the first end of the charge pump system, and the second end of the inductance switch module is connected with a battery. The second end of the charge pump system is connected with the interface module, the third end of the charge pump system is connected with one end of the PMU, and the other end of the PMU is connected with the load system; the inductance switch module comprises a first switch module Q1 and a first inductor which are connected in parallel, the first end of the inductance switch module is one end of the Q1 and the first inductor which are connected in parallel, and the second end of the inductance switch module is the other end of the Q1 and the first inductor which are connected in parallel. According to the embodiment of the invention, the use of an external transformation circuit can be reduced, and the mainboard space and the device cost are saved.

Description

Technical Field

[0001] The present application relates to the field of electronic circuit technology, and in particular to a power supply control system, method and terminal device. Background Art

[0002] When the terminal device is connected to an external power source, the battery of the terminal device can be charged; when the external battery is not connected, the battery needs to supply power to the load system of the terminal device. In the process of the battery supplying power to the load of the terminal device, the battery voltage to the load needs to be connected to an external boost module, and the external boost module can only supply power to the load system after boosting the battery voltage. In the above process, the process of the battery supplying power to the load system requires an external boost circuit, which makes the device cost high and also takes up the circuit integration space. Summary of the invention

[0003] The embodiments of the present application provide a power supply control system, method and terminal device, which can be used to save motherboard space and save equipment costs.

[0004] In a first aspect, an embodiment of the present application provides a terminal device, which includes an interface module, a power management unit PMU, a battery, a load system and a power supply system; wherein: the power supply system includes a charge pump system and an inductor switch module, the first end of the inductor switch module is connected to the first end of the charge pump system, and the second end of the inductor switch module is connected to the battery; the second end of the charge pump system is connected to the interface module, the third end of the charge pump system is connected to one end of the PMU, and the other end of the PMU is connected to the load system; the inductor switch module includes a first switch module Q1 and a first inductor connected in parallel, the first end of the inductor switch module is one end of the parallel Q1 and the first inductor, and the second end of the inductor switch module is the other end of the parallel Q1 and the first inductor.

[0005] In the implementation mode of the present application, the charge pump system and the inductor switch module are connected in series. During the process of charging the battery, the voltage reduction capability of the charge pump system is used to charge the battery; during the process of discharging the battery, the voltage boost capability of the charge pump system and the inductor switch module is used to increase the battery voltage and supply power to the load. The voltage is boosted before being input to the PMU, which reduces the need for boosting after the PMU, reduces the need for setting up a separate boost device, saves circuit device costs, saves internal integration space, and improves circuit performance.

[0006] In a possible implementation, when the battery is charged through the interface module, Q1 is in the on state, and the charge pump system steps down the input voltage of the interface module; when the battery supplies power to the PMU through the power supply system, Q1 is in the off state, and the power supply system steps up the battery voltage. In this way, the charge pump system and the inductor switch module are connected in series, and during the process of charging the battery, the step-down capability of the charge pump system is used to charge the battery; during the process of discharging the battery, the step-up capability of the charge pump system and the inductor switch module is used to step up the battery voltage and supply power to the load. The voltage is stepped up before the voltage is input to the PMU, which reduces the need for step-up after the PMU, reduces the need for setting up a separate step-up device, saves circuit device costs, saves internal integration space, and improves circuit performance.

[0007] In a possible implementation, the charge pump system includes a second switch module Q2, a third switch module Q3 and a transformer; the first end of Q2 is the second end of the charge pump system, the first end of Q3 is the third end of the charge pump system; the second end of Q2 is connected to the second end of Q3 and the first end of the transformer, and the second end of the transformer is the first end of the charge pump system. In this way, the use needs of different use scenarios can be controlled and the adaptability of the circuit can be improved.

[0008] In a possible implementation manner, the voltage transformation parameter of the charge pump system is one of 2:1, 3:1 and 4:1.

[0009] In a possible implementation, the transformer includes a fourth switch module Q4, a fifth switch module Q5, a sixth switch module Q6, a seventh switch module Q7, a first capacitor C1, and a second capacitor C2; wherein the first end of Q4 is connected to the second end of Q2 and the second end of Q3; the second end of Q4 is connected to the first end of Q5 and the first end of C1; the second end of Q5 is connected to the first end of Q6 and is the first end of the charge pump system; the second end of Q6 is connected to the second end of C1 and the first end of Q7, and the second end of Q7 and the second end of C2 are grounded; the first end of Q3 is connected to the first end of C2. In this way, the charge pump system can be connected in series with the inductor switch module. During the battery discharge process, the charge pump system and the inductor switch module increase the battery voltage, and the voltage is increased before the voltage is input to the PMU, which reduces the need for voltage increase after the PMU, reduces the need for setting up a separate voltage increase device, saves circuit device costs, saves internal integration space, and improves circuit performance.

[0010] In a possible implementation, when the battery supplies power to the PMU, the switch module of the power supply system switches in turn according to the first state, the second state, the third state and the fourth state; in the first state, the Q3, the Q4 and the Q5 are in the on state; the Q1, the Q2, the Q6 and the Q7 are in the off state; in the second state, the Q5 and the Q7 are in the on state; the Q1, the Q2, the Q3, the Q4 and the Q6 are in the off state; in the third state, the Q3, the Q4 and the Q6 are in the on state; the Q1, the Q2, the Q5 and the Q7 are in the off state; in the fourth state, the Q6 and the Q7 are in the on state; the Q1, the Q2, the Q3, the Q4 and the Q5 are in the off state. In this way, during the battery discharge process, the switch module of the power supply system can be controlled to work in different working states to complete the boost function, thereby saving the circuit device cost and the internal integration space.

[0011] In a possible implementation, the transformer includes an eighth switch module Q8, a ninth switch module Q9, a tenth switch module Q10, an eleventh switch module Q11, a twelfth switch module Q12, a thirteenth switch module Q13, a third capacitor C3 and a fourth capacitor C4; wherein the second end of Q2 is connected to the second end of Q3, the first end of Q8 and the first end of C3; the second end of C3 is connected to the first end of Q9 and the first end of Q10; the second end of Q8 is connected to the second end of Q9, the first end of Q11 and the first end of C4; the second end of C4 is connected to the first end of Q12 and the first end of Q13; the second end of Q11 is connected to the second end of Q12 and is the first end of the charge pump system; the second end of Q10 and the second end of Q13 are grounded. In this way, the charge pump system can be connected in series with the inductor switch module. During the battery discharge process, the charge pump system and the inductor switch module increase the battery voltage. The voltage is boosted before it is input to the PMU, reducing the need for boosting after the PMU and the need to set up a separate boost device, saving circuit device costs, saving internal integration space, and improving circuit performance.

[0012] In a possible implementation, when the battery supplies power to the PMU, the switch module of the power supply system switches alternately between the first state and the second state; in the first state, Q3, Q8, Q10, Q11, and Q13 are in the on state; Q1, Q2, Q9, and Q12 are in the off state; in the second state, Q3, Q9, and Q12 are in the on state; Q1, Q2, Q8, Q10, Q11, and Q13 are in the off state. In this way, during the battery discharge process, the switch module of the power supply system can be controlled to work in different working states to complete the boost function, thereby saving circuit device costs and internal integration space.

[0013] In a possible implementation, the transformer includes a fourteenth switch module Q14, a fifteenth switch module Q15, a sixteenth switch module Q16, a seventeenth switch module Q17, an eighteenth switch module Q18, a nineteenth switch module Q19, a twentieth switch module Q20, a twenty-first switch module Q21, a twenty-second switch module Q22, a twenty-third switch module Q23, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7 and an eighth capacitor C8; wherein the second end of Q2 is connected to the second end of Q3, the first end of Q14 and the first end of C5; the second end of Q14 is connected to the second end of Q15 and the first end of C6; the second end of C6 is connected to the second end of Q2 and the first end of Q3 ... The first end of Q16 is connected to the first end of Q17; the second end of Q17 is connected to the second end of Q18 and the first end of C7; the second end of C7 is connected to the first end of Q19 and the first end of Q20; the second end of Q20 is connected to the second end of Q21 and the first end of C8; the second end of C8 is connected to the first end of Q22 and the first end of Q23; the first end of Q15 is connected to the first end of Q18, the first end of Q21 and the second end of Q23, and is the first end of the charge pump system; the second end of C5, the second end of Q16, the second end of Q19 and the second end of Q22 are grounded. In this way, the charge pump system can be connected in series with the inductor switch module. During the battery discharge process, the charge pump system and the inductor switch module increase the battery voltage, and the voltage is increased before the voltage is input to the PMU, which reduces the need for voltage increase after the PMU, reduces the need for setting up a separate voltage increase device, saves circuit device costs, saves internal integration space, and improves circuit performance.

[0014] In a possible implementation, when the battery supplies power to the PMU, the switch module of the power supply system switches in turn according to a first state, a second state, a third state, and a fourth state; in the first state, Q3, Q14, and Q15 are in an on state; Q1, Q2, Q16, Q17, Q18, Q19, Q20, Q21, Q22, and Q23 are in an off state; in the second state, Q3, Q14, Q15, Q16, Q18, Q19, Q21, and Q22 are in an on state. state; Q1, Q2, Q17, Q20, and Q23 are in the cut-off state; in the third state, Q3, Q14, Q17, Q20, and Q23 are in the on state; Q1, Q2, Q15, Q16, Q18, Q19, Q21, and Q22 are in the cut-off state; in the fourth state, Q3, Q22, and Q23 are in the on state; Q1, Q2, Q14, Q15, Q16, Q17, Q18, Q19, and Q21 are in the cut-off state. In this way, during the battery discharge process, the switch module of the power supply system can be controlled to work in different working states to complete the boost function, thereby saving circuit device costs and internal integration space.

[0015] In a possible implementation manner, the transformer includes a twenty-fourth switch module Q24, a twenty-fifth switch module Q25, a twenty-sixth switch module Q26, a twenty-seventh switch module Q27, a twenty-eighth switch module Q28, a twenty-ninth switch module Q29, a thirtieth switch module Q30, a ninth capacitor C9, a tenth capacitor C10 and an eleventh capacitor C11; wherein the second end of Q2 is connected to the second end of Q3, the first end of Q24 and the first end of C9; the second end of Q24 is connected to the first end of Q25 and the first end of C10; the second end of Q25 is connected to the first end of Q26 and the first end of C11; the second end of Q26 is connected to the first end of Q27 and the first end of Q28, and is the first end of the charge pump system; the second end of Q27 is connected to the second end of C10 and the first end of Q29; the second end of Q28 is connected to the first end of Q30, the second end of C9 and the second end of C11; the second end of Q29 and the second end of Q30 are grounded. In this way, the charge pump system can be connected in series with the inductor switch module. During the battery discharge process, the charge pump system and the inductor switch module increase the battery voltage. The voltage is boosted before it is input to the PMU, reducing the need for boosting after the PMU and the need to set up a separate boost device, saving circuit device costs, saving internal integration space, and improving circuit performance.

[0016] In a possible implementation, when the battery supplies power to the PMU, the switch module of the power supply system switches alternately between the first state and the second state; in the first state, Q24, Q26, Q27 and Q30 are in the on state; Q1, Q2, Q3, Q25, Q28 and Q29 are in the off state; in the second state, Q3, Q25, Q28 and Q29 are in the on state; Q1, Q2, Q24, Q26, Q27 and Q30 are in the off state. In this way, during the battery discharge process, the switch module of the power supply system can be controlled to work in different working states to complete the boost function, thereby saving circuit device costs and internal integration space.

[0017] In a possible implementation manner, the transformer includes a thirty-first switch module Q31, a thirty-second switch module Q32, a thirty-third switch module Q33, a thirty-fourth switch module Q34, a thirty-fifth switch module Q35, a thirty-sixth switch module Q36, a thirty-seventh switch module Q37, a thirty-eighth switch module Q38, a thirty-ninth switch module Q39, a fortieth switch module Q40, a forty-first switch module Q41, a forty-second switch module Q42, a forty-third switch module Q43, a forty-fourth switch module Q44, a twelfth capacitor C12, a thirteenth capacitor C13, a fourteenth capacitor C14 and a fifteenth capacitor C15; wherein the second end of Q2 is connected to the second end of Q3, the first end of Q31 and the first end of Q32; the second end of Q31 is connected to the first end of Q33 and the first end of C12; the second end of Q32 is connected to the first end of Q34 end and the first end of C13; the second end of Q33 is connected to the first end of Q35, the first end of Q36 and the first end of C15; the second end of Q34 is connected to the first end of Q37, the first end of Q38 and the first end of C14; the second end of Q37 is connected to the second end of C12 and the first end of Q39; the second end of Q36 is connected to the second end of C13 and the first end of Q44; the second end of Q38 is connected to the first end of Q40, the second end of Q35 and the first end of Q42, and is the first end of the charge pump system; the second end of Q40 is connected to the second end of C14 and the first end of Q41; the second end of Q42 is connected to the first end of Q43 and the first end of C15; the second end of Q39, the second end of Q41, the second end of Q43 and the second end of Q44 are grounded. In this way, the charge pump system can be connected in series with the inductor switch module. During the battery discharge process, the charge pump system and the inductor switch module increase the battery voltage. The voltage is boosted before it is input to the PMU, reducing the need for boosting after the PMU and the need to set up a separate boost device, saving circuit device costs, saving internal integration space, and improving circuit performance.

[0018] In a possible implementation, when the battery supplies power to the PMU, the switch module of the power supply system switches alternately between a first state and a second state; in the first state, Q3, Q32, Q33, Q36, Q38, Q39, Q41, and Q42 are in an on state; Q1, Q2, Q31, Q34, Q35, Q37, Q40, Q43, and Q44 are in an off state; in the second state, Q3, Q31, Q34, Q35, Q37, Q40, Q43, and Q44 are in an on state; Q1, Q2, Q32, Q33, Q36, Q38, Q39, Q41, and Q42 are in an off state. In this way, during the battery discharge process, the switch module of the power supply system can be controlled to work in different working states to complete the boost function, thereby saving circuit device costs and internal integration space.

[0019] In a second aspect, an embodiment of the present application provides a power supply control system, which includes an interface module, a power management unit PMU, a battery, a load system and a power supply system; wherein: the power supply system includes a charge pump system and an inductor switch module, the first end of the inductor switch module is connected to the first end of the charge pump system, and the second end of the inductor switch module is connected to the battery; the second end of the charge pump system is connected to the interface module, the third end of the charge pump system is connected to one end of the PMU, and the other end of the PMU is connected to the load system; the inductor switch module includes a first switch module Q1 and a first inductor connected in parallel, the first end of the inductor switch module is one end of the parallel Q1 and the first inductor, and the second end of the inductor switch module is the other end of the parallel Q1 and the first inductor.

[0020] In the implementation mode of the present application, the charge pump system and the inductor switch module are connected in series. During the process of charging the battery, the voltage reduction capability of the charge pump system is used to charge the battery; during the process of discharging the battery, the voltage boost capability of the charge pump system and the inductor switch module is used to increase the battery voltage and supply power to the load. The voltage is boosted before being input to the PMU, which reduces the need for boosting after the PMU, reduces the need for setting up a separate boost device, saves circuit device costs, saves internal integration space, and improves circuit performance.

[0021] In a possible implementation, when the battery is charged through the interface module, Q1 is in the on state, and the charge pump system steps down the input voltage of the interface module; when the battery supplies power to the PMU through the power supply system, Q1 is in the off state, and the power supply system steps up the battery voltage. In this way, the charge pump system and the inductor switch module are connected in series, and during the process of charging the battery, the step-down capability of the charge pump system is used to charge the battery; during the process of discharging the battery, the step-up capability of the charge pump system and the inductor switch module is used to step up the battery voltage and supply power to the load. The voltage is stepped up before the voltage is input to the PMU, which reduces the need for step-up after the PMU, reduces the need for setting up a separate step-up device, saves circuit device costs, saves internal integration space, and improves circuit performance.

[0022] In a possible implementation, the charge pump system includes a second switch module Q2, a third switch module Q3 and a transformer; the first end of Q2 is the second end of the charge pump system, the first end of Q3 is the third end of the charge pump system; the second end of Q2 is connected to the second end of Q3 and the first end of the transformer, and the second end of the transformer is the first end of the charge pump system. In this way, the use needs of different use scenarios can be controlled and the adaptability of the circuit can be improved.

[0023] In a possible implementation manner, the voltage transformation parameter of the charge pump system is one of 2:1, 3:1 and 4:1.

[0024] In a possible implementation, the transformer includes a fourth switch module Q4, a fifth switch module Q5, a sixth switch module Q6, a seventh switch module Q7, a first capacitor C1, and a second capacitor C2; wherein the first end of Q4 is connected to the second end of Q2 and the second end of Q3; the second end of Q4 is connected to the first end of Q5 and the first end of C1; the second end of Q5 is connected to the first end of Q6 and is the first end of the charge pump system; the second end of Q6 is connected to the second end of C1 and the first end of Q7, and the second end of Q7 and the second end of C2 are grounded; the first end of Q3 is connected to the first end of C2. In this way, the charge pump system can be connected in series with the inductor switch module. During the battery discharge process, the charge pump system and the inductor switch module increase the battery voltage, and the voltage is increased before the voltage is input to the PMU, which reduces the need for voltage increase after the PMU, reduces the need for setting up a separate voltage increase device, saves circuit device costs, saves internal integration space, and improves circuit performance.

[0025] In a possible implementation, when the battery supplies power to the PMU, the switch module of the power supply system switches in turn according to the first state, the second state, the third state and the fourth state; in the first state, the Q3, the Q4 and the Q5 are in the on state; the Q1, the Q2, the Q6 and the Q7 are in the off state; in the second state, the Q5 and the Q7 are in the on state; the Q1, the Q2, the Q3, the Q4 and the Q6 are in the off state; in the third state, the Q3, the Q4 and the Q6 are in the on state; the Q1, the Q2, the Q5 and the Q7 are in the off state; in the fourth state, the Q6 and the Q7 are in the on state; the Q1, the Q2, the Q3, the Q4 and the Q5 are in the off state. In this way, during the battery discharge process, the switch module of the power supply system can be controlled to work in different working states to complete the boost function, thereby saving the circuit device cost and the internal integration space.

[0026] In a possible implementation, the transformer includes an eighth switch module Q8, a ninth switch module Q9, a tenth switch module Q10, an eleventh switch module Q11, a twelfth switch module Q12, a thirteenth switch module Q13, a third capacitor C3 and a fourth capacitor C4; wherein the second end of Q2 is connected to the second end of Q3, the first end of Q8 and the first end of C3; the second end of C3 is connected to the first end of Q9 and the first end of Q10; the second end of Q8 is connected to the second end of Q9, the first end of Q11 and the first end of C4; the second end of C4 is connected to the first end of Q12 and the first end of Q13; the second end of Q11 is connected to the second end of Q12 and is the first end of the charge pump system; the second end of Q10 and the second end of Q13 are grounded. In this way, the charge pump system can be connected in series with the inductor switch module. During the battery discharge process, the charge pump system and the inductor switch module increase the battery voltage. The voltage is boosted before it is input to the PMU, reducing the need for boosting after the PMU and the need to set up a separate boost device, saving circuit device costs, saving internal integration space, and improving circuit performance.

[0027] In a possible implementation, when the battery supplies power to the PMU, the switch module of the power supply system switches alternately between the first state and the second state; in the first state, Q3, Q8, Q10, Q11, and Q13 are in the on state; Q1, Q2, Q9, and Q12 are in the off state; in the second state, Q3, Q9, and Q12 are in the on state; Q1, Q2, Q8, Q10, Q11, and Q13 are in the off state. In this way, during the battery discharge process, the switch module of the power supply system can be controlled to work in different working states to complete the boost function, thereby saving circuit device costs and internal integration space.

[0028] In a possible implementation, the transformer includes a fourteenth switch module Q14, a fifteenth switch module Q15, a sixteenth switch module Q16, a seventeenth switch module Q17, an eighteenth switch module Q18, a nineteenth switch module Q19, a twentieth switch module Q20, a twenty-first switch module Q21, a twenty-second switch module Q22, a twenty-third switch module Q23, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7 and an eighth capacitor C8; wherein the second end of Q2 is connected to the second end of Q3, the first end of Q14 and the first end of C5; the second end of Q14 is connected to the second end of Q15 and the first end of C6; the second end of C6 is connected to the second end of Q2 and the first end of Q3 ... The first end of Q16 is connected to the first end of Q17; the second end of Q17 is connected to the second end of Q18 and the first end of C7; the second end of C7 is connected to the first end of Q19 and the first end of Q20; the second end of Q20 is connected to the second end of Q21 and the first end of C8; the second end of C8 is connected to the first end of Q22 and the first end of Q23; the first end of Q15 is connected to the first end of Q18, the first end of Q21 and the second end of Q23, and is the first end of the charge pump system; the second end of C5, the second end of Q16, the second end of Q19 and the second end of Q22 are grounded. In this way, the charge pump system can be connected in series with the inductor switch module. During the battery discharge process, the charge pump system and the inductor switch module increase the battery voltage, and the voltage is increased before the voltage is input to the PMU, which reduces the need for voltage increase after the PMU, reduces the need for setting up a separate voltage increase device, saves circuit device costs, saves internal integration space, and improves circuit performance.

[0029] In a possible implementation, when the battery supplies power to the PMU, the switch module of the power supply system switches in turn according to a first state, a second state, a third state, and a fourth state; in the first state, Q3, Q14, and Q15 are in an on state; Q1, Q2, Q16, Q17, Q18, Q19, Q20, Q21, Q22, and Q23 are in an off state; in the second state, Q3, Q14, Q15, Q16, Q18, Q19, Q21, and Q22 are in an on state. state; Q1, Q2, Q17, Q20, and Q23 are in the cut-off state; in the third state, Q3, Q14, Q17, Q20, and Q23 are in the on state; Q1, Q2, Q15, Q16, Q18, Q19, Q21, and Q22 are in the cut-off state; in the fourth state, Q3, Q22, and Q23 are in the on state; Q1, Q2, Q14, Q15, Q16, Q17, Q18, Q19, and Q21 are in the cut-off state. In this way, during the battery discharge process, the switch module of the power supply system can be controlled to work in different working states to complete the boost function, thereby saving circuit device costs and internal integration space.

[0030] In a possible implementation manner, the transformer includes a twenty-fourth switch module Q24, a twenty-fifth switch module Q25, a twenty-sixth switch module Q26, a twenty-seventh switch module Q27, a twenty-eighth switch module Q28, a twenty-ninth switch module Q29, a thirtieth switch module Q30, a ninth capacitor C9, a tenth capacitor C10 and an eleventh capacitor C11; wherein the second end of Q2 is connected to the second end of Q3, the first end of Q24 and the first end of C9; the second end of Q24 is connected to the first end of Q25 and the first end of C10; the second end of Q25 is connected to the first end of Q26 and the first end of C11; the second end of Q26 is connected to the first end of Q27 and the first end of Q28, and is the first end of the charge pump system; the second end of Q27 is connected to the second end of C10 and the first end of Q29; the second end of Q28 is connected to the first end of Q30, the second end of C9 and the second end of C11; the second end of Q29 and the second end of Q30 are grounded. In this way, the charge pump system can be connected in series with the inductor switch module. During the battery discharge process, the charge pump system and the inductor switch module increase the battery voltage. The voltage is boosted before it is input to the PMU, reducing the need for boosting after the PMU and the need to set up a separate boost device, saving circuit device costs, saving internal integration space, and improving circuit performance.

[0031] In a possible implementation, when the battery supplies power to the PMU, the switch module of the power supply system switches alternately between the first state and the second state; in the first state, Q24, Q26, Q27 and Q30 are in the on state; Q1, Q2, Q3, Q25, Q28 and Q29 are in the off state; in the second state, Q3, Q25, Q28 and Q29 are in the on state; Q1, Q2, Q24, Q26, Q27 and Q30 are in the off state. In this way, during the battery discharge process, the switch module of the power supply system can be controlled to work in different working states to complete the boost function, thereby saving circuit device costs and internal integration space.

[0032] In a possible implementation manner, the transformer includes a thirty-first switch module Q31, a thirty-second switch module Q32, a thirty-third switch module Q33, a thirty-fourth switch module Q34, a thirty-fifth switch module Q35, a thirty-sixth switch module Q36, a thirty-seventh switch module Q37, a thirty-eighth switch module Q38, a thirty-ninth switch module Q39, a fortieth switch module Q40, a forty-first switch module Q41, a forty-second switch module Q42, a forty-third switch module Q43, a forty-fourth switch module Q44, a twelfth capacitor C12, a thirteenth capacitor C13, a fourteenth capacitor C14 and a fifteenth capacitor C15; wherein the second end of Q2 is connected to the second end of Q3, the first end of Q31 and the first end of Q32; the second end of Q31 is connected to the first end of Q33 and the first end of C12; the second end of Q32 is connected to the first end of Q34 end and the first end of C13; the second end of Q33 is connected to the first end of Q35, the first end of Q36 and the first end of C15; the second end of Q34 is connected to the first end of Q37, the first end of Q38 and the first end of C14; the second end of Q37 is connected to the second end of C12 and the first end of Q39; the second end of Q36 is connected to the second end of C13 and the first end of Q44; the second end of Q38 is connected to the first end of Q40, the second end of Q35 and the first end of Q42, and is the first end of the charge pump system; the second end of Q40 is connected to the second end of C14 and the first end of Q41; the second end of Q42 is connected to the first end of Q43 and the first end of C15; the second end of Q39, the second end of Q41, the second end of Q43 and the second end of Q44 are grounded. In this way, the charge pump system can be connected in series with the inductor switch module. During the battery discharge process, the charge pump system and the inductor switch module increase the battery voltage. The voltage is boosted before it is input to the PMU, reducing the need for boosting after the PMU and the need to set up a separate boost device, saving circuit device costs, saving internal integration space, and improving circuit performance.

[0033] In a possible implementation, when the battery supplies power to the PMU, the switch module of the power supply system switches alternately between a first state and a second state; in the first state, Q3, Q32, Q33, Q36, Q38, Q39, Q41, and Q42 are in an on state; Q1, Q2, Q31, Q34, Q35, Q37, Q40, Q43, and Q44 are in an off state; in the second state, Q3, Q31, Q34, Q35, Q37, Q40, Q43, and Q44 are in an on state; Q1, Q2, Q32, Q33, Q36, Q38, Q39, Q41, and Q42 are in an off state. In this way, during the battery discharge process, the switch module of the power supply system can be controlled to work in different working states to complete the boost function, thereby saving circuit device costs and internal integration space.

[0034] In a third aspect, an embodiment of the present application provides a power supply control method, which is applied to a terminal device, wherein the terminal device includes an interface module, a power management unit PMU, a battery, a load system and a power supply system; wherein: the power supply system includes a charge pump system and an inductor switch module, the first end of the inductor switch module is connected to the first end of the charge pump system, and the second end of the inductor switch module is connected to the battery; the second end of the charge pump system is connected to the interface module, the third end of the charge pump system is connected to one end of the PMU, and the other end of the PMU is connected to the load system; the inductor switch module includes a first switch module Q1 and a first inductor in parallel, the first end of the inductor switch module is one end of the parallel Q1 and the first inductor, and the second end of the inductor switch module is the other end of the parallel Q1 and the first inductor; in the case of charging the battery through the interface module, the terminal device controls Q1 to be turned on, and controls the charge pump system to step down the input voltage of the interface module; in the case where the battery supplies power to the PMU through the power supply system, the terminal device controls Q1 to be turned off, and controls the power supply system to boost the battery voltage.

[0035] In the implementation mode of the present application, the charge pump system and the inductor switch module are connected in series. During the process of charging the battery, the voltage reduction capability of the charge pump system is used to charge the battery; during the process of discharging the battery, the voltage boost capability of the charge pump system and the inductor switch module is used to increase the battery voltage and supply power to the load. The voltage is boosted before being input to the PMU, which reduces the need for boosting after the PMU, reduces the need for setting up a separate boost device, saves circuit device costs, saves internal integration space, and improves circuit performance.

[0036] In a possible implementation, the charge pump system includes a second switch module Q2, a third switch module Q3 and a transformer; the first end of Q2 is the second end of the charge pump system, the first end of Q3 is the third end of the charge pump system; the second end of Q2 is connected to the second end of Q3 and the first end of the transformer, and the second end of the transformer is the first end of the charge pump system. In this way, the use needs of different use scenarios can be controlled and the adaptability of the circuit can be improved.

[0037] In a possible implementation manner, the voltage transformation parameter of the charge pump system is one of 2:1, 3:1 and 4:1.

[0038] In a possible implementation, the transformer includes a fourth switch module Q4, a fifth switch module Q5, a sixth switch module Q6, a seventh switch module Q7, a first capacitor C1, and a second capacitor C2; wherein the first end of Q4 is connected to the second end of Q2 and the second end of Q3; the second end of Q4 is connected to the first end of Q5 and the first end of C1; the second end of Q5 is connected to the first end of Q6 and is the first end of the charge pump system; the second end of Q6 is connected to the second end of C1 and the first end of Q7, and the second end of Q7 and the second end of C2 are grounded; the first end of Q3 is connected to the first end of C2. In this way, the charge pump system can be connected in series with the inductor switch module. During the battery discharge process, the charge pump system and the inductor switch module increase the battery voltage, and the voltage is increased before the voltage is input to the PMU, which reduces the need for voltage increase after the PMU, reduces the need for setting up a separate voltage increase device, saves circuit device costs, saves internal integration space, and improves circuit performance.

[0039] In a possible implementation, when the battery supplies power to the PMU, the terminal device controls the switch module of the power supply system to switch in turn according to the first state, the second state, the third state and the fourth state; in the first state, the terminal device controls Q3, Q4 and Q5 to be turned on, and Q1, Q2, Q6 and Q7 to be turned off; in the second state, the terminal device controls Q5 and Q7 to be turned on, and Q1, Q2, Q3, Q4 and Q6 to be turned off; in the third state, the terminal device controls Q3, Q4 and Q6 to be turned on, and Q1, Q2, Q5 and Q7 to be turned off; in the fourth state, the terminal device controls Q6 and Q7 to be turned on, and Q1, Q2, Q3, Q4 and Q5 to be turned off. In this way, during the battery discharge process, the switch module of the power supply system can be controlled to work in different working states to complete the boost function, thereby saving circuit device costs and internal integration space.

[0040] In a possible implementation, the transformer includes an eighth switch module Q8, a ninth switch module Q9, a tenth switch module Q10, an eleventh switch module Q11, a twelfth switch module Q12, a thirteenth switch module Q13, a third capacitor C3 and a fourth capacitor C4; wherein the second end of Q2 is connected to the second end of Q3, the first end of Q8 and the first end of C3; the second end of C3 is connected to the first end of Q9 and the first end of Q10; the second end of Q8 is connected to the second end of Q9, the first end of Q11 and the first end of C4; the second end of C4 is connected to the first end of Q12 and the first end of Q13; the second end of Q11 is connected to the second end of Q12 and is the first end of the charge pump system; the second end of Q10 and the second end of Q13 are grounded. In this way, the charge pump system can be connected in series with the inductor switch module. During the battery discharge process, the charge pump system and the inductor switch module increase the battery voltage. The voltage is boosted before it is input to the PMU, reducing the need for boosting after the PMU and the need to set up a separate boost device, saving circuit device costs, saving internal integration space, and improving circuit performance.

[0041] In a possible implementation, when the battery supplies power to the PMU, the terminal device controls the switch module of the power supply system to switch alternately between the first state and the second state; in the first state, the terminal device controls Q3, Q8, Q10, Q11, and Q13 to be turned on, and Q1, Q2, Q9, and Q12 to be turned off; in the second state, the terminal device controls Q3, Q9, and Q12 to be turned on, and Q1, Q2, Q8, Q10, Q11, and Q13 to be turned off. In this way, during the battery discharge process, the switch module of the power supply system can be controlled to work in different working states to complete the boost function, thereby saving circuit device costs and internal integration space.

[0042] In a possible implementation, the transformer includes a fourteenth switch module Q14, a fifteenth switch module Q15, a sixteenth switch module Q16, a seventeenth switch module Q17, an eighteenth switch module Q18, a nineteenth switch module Q19, a twentieth switch module Q20, a twenty-first switch module Q21, a twenty-second switch module Q22, a twenty-third switch module Q23, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7 and an eighth capacitor C8; wherein the second end of Q2 is connected to the second end of Q3, the first end of Q14 and the first end of C5; the second end of Q14 is connected to the second end of Q15 and the first end of C6; the second end of C6 is connected to the second end of Q2 and the first end of Q3 ... The first end of Q16 is connected to the first end of Q17; the second end of Q17 is connected to the second end of Q18 and the first end of C7; the second end of C7 is connected to the first end of Q19 and the first end of Q20; the second end of Q20 is connected to the second end of Q21 and the first end of C8; the second end of C8 is connected to the first end of Q22 and the first end of Q23; the first end of Q15 is connected to the first end of Q18, the first end of Q21 and the second end of Q23, and is the first end of the charge pump system; the second end of C5, the second end of Q16, the second end of Q19 and the second end of Q22 are grounded. In this way, the charge pump system can be connected in series with the inductor switch module. During the battery discharge process, the charge pump system and the inductor switch module increase the battery voltage, and the voltage is increased before the voltage is input to the PMU, which reduces the need for voltage increase after the PMU, reduces the need for setting up a separate voltage increase device, saves circuit device costs, saves internal integration space, and improves circuit performance.

[0043] In a possible implementation, when the battery supplies power to the PMU, the terminal device controls the switch module of the power supply system to switch in turn according to the first state, the second state, the third state and the fourth state; in the first state, the terminal device controls Q3, Q14 and Q15 to be turned on, and Q1, Q2, Q16, Q17, Q18, Q19, Q20, Q21, Q22 and Q23 to be turned off; in the second state, the terminal device controls Q3, Q14, Q15, Q16, Q18, Q19, Q20, Q21, Q22 and Q23 to be turned off. 21 and Q22 are turned on, and Q1, Q2, Q17, Q20, and Q23 are turned off; in the third state, the terminal device controls Q3, Q14, Q17, Q20, and Q23 to be turned on, and Q1, Q2, Q15, Q16, Q18, Q19, Q21, and Q22 are turned off; in the fourth state, the terminal device controls Q3, Q22, and Q23 to be turned on, and Q1, Q2, Q14, Q15, Q16, Q17, Q18, Q19, and Q21 are turned off. In this way, during the battery discharge process, the switch module of the power supply system can be controlled to work in different working states to complete the boost function, thereby saving circuit device costs and internal integration space.

[0044] In a possible implementation manner, the transformer includes a twenty-fourth switch module Q24, a twenty-fifth switch module Q25, a twenty-sixth switch module Q26, a twenty-seventh switch module Q27, a twenty-eighth switch module Q28, a twenty-ninth switch module Q29, a thirtieth switch module Q30, a ninth capacitor C9, a tenth capacitor C10 and an eleventh capacitor C11; wherein the second end of Q2 is connected to the second end of Q3, the first end of Q24 and the first end of C9; the second end of Q24 is connected to the first end of Q25 and the first end of C10; the second end of Q25 is connected to the first end of Q26 and the first end of C11; the second end of Q26 is connected to the first end of Q27 and the first end of Q28, and is the first end of the charge pump system; the second end of Q27 is connected to the second end of C10 and the first end of Q29; the second end of Q28 is connected to the first end of Q30, the second end of C9 and the second end of C11; the second end of Q29 and the second end of Q30 are grounded. In this way, the charge pump system can be connected in series with the inductor switch module. During the battery discharge process, the charge pump system and the inductor switch module increase the battery voltage. The voltage is boosted before it is input to the PMU, reducing the need for boosting after the PMU and the need to set up a separate boost device, saving circuit device costs, saving internal integration space, and improving circuit performance.

[0045] In a possible implementation, when the battery supplies power to the PMU, the terminal device controls the switch module of the power supply system to switch alternately between the first state and the second state; in the first state, the terminal device controls Q24, Q26, Q27 and Q30 to be turned on, and Q1, Q2, Q3, Q25, Q28 and Q29 to be turned off; in the second state, the terminal device controls Q3, Q25, Q28 and Q29 to be turned on, and Q1, Q2, Q24, Q26, Q27 and Q30 to be turned off. In this way, during the battery discharge process, the switch module of the power supply system can be controlled to work in different working states to complete the boost function, thereby saving circuit device costs and internal integration space.

[0046] In a possible implementation manner, the transformer includes a thirty-first switch module Q31, a thirty-second switch module Q32, a thirty-third switch module Q33, a thirty-fourth switch module Q34, a thirty-fifth switch module Q35, a thirty-sixth switch module Q36, a thirty-seventh switch module Q37, a thirty-eighth switch module Q38, a thirty-ninth switch module Q39, a fortieth switch module Q40, a forty-first switch module Q41, a forty-second switch module Q42, a forty-third switch module Q43, a forty-fourth switch module Q44, a twelfth capacitor C12, a thirteenth capacitor C13, a fourteenth capacitor C14 and a fifteenth capacitor C15; wherein the second end of Q2 is connected to the second end of Q3, the first end of Q31 and the first end of Q32; the second end of Q31 is connected to the first end of Q33 and the first end of C12; the second end of Q32 is connected to the first end of Q34 end and the first end of C13; the second end of Q33 is connected to the first end of Q35, the first end of Q36 and the first end of C15; the second end of Q34 is connected to the first end of Q37, the first end of Q38 and the first end of C14; the second end of Q37 is connected to the second end of C12 and the first end of Q39; the second end of Q36 is connected to the second end of C13 and the first end of Q44; the second end of Q38 is connected to the first end of Q40, the second end of Q35 and the first end of Q42, and is the first end of the charge pump system; the second end of Q40 is connected to the second end of C14 and the first end of Q41; the second end of Q42 is connected to the first end of Q43 and the first end of C15; the second end of Q39, the second end of Q41, the second end of Q43 and the second end of Q44 are grounded. In this way, the charge pump system can be connected in series with the inductor switch module. During the battery discharge process, the charge pump system and the inductor switch module increase the battery voltage. The voltage is boosted before it is input to the PMU, reducing the need for boosting after the PMU and the need to set up a separate boost device, saving circuit device costs, saving internal integration space, and improving circuit performance.

[0047] In a possible implementation, when the battery supplies power to the PMU, the terminal device controls the switch module of the power supply system to switch alternately between a first state and a second state; in the first state, the terminal device controls Q3, Q32, Q33, Q36, Q38, Q39, Q41 and Q42 to be turned on, and Q1, Q2, Q31, Q34, Q35, Q37, Q40, Q43 and Q44 to be turned off; in the second state, the terminal device controls Q3, Q31, Q34, Q35, Q37, Q40, Q43 and Q44 to be turned on, and Q1, Q2, Q32, Q33, Q36, Q38, Q39, Q41 and Q42 to be turned off. In this way, during the battery discharge process, the switch module of the power supply system can be controlled to work in different working states to complete the boost function, thereby saving circuit device costs and internal integration space.

[0048] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, comprising instructions, which, when executed on a terminal device, enable the terminal device to execute a power supply control method as described in the third aspect or any possible implementation of the third aspect.

[0049] In the fifth aspect, an embodiment of the present application provides a chip system, which is applied to a terminal device, and the chip system includes one or more processors, which are used to call computer instructions to enable the terminal device to execute a power supply control method as described in the second aspect or any possible implementation method of the second aspect.

[0050] In a sixth aspect, an embodiment of the present application provides a printed circuit board (PCB), which includes a power supply control system in any possible implementation of the second aspect and a device connected to the power supply system.

[0051] In a seventh aspect, an embodiment of the present application provides a chip, comprising a power supply control system in any possible implementation of the second aspect and a device connected to the power supply control system.

[0052] In an eighth aspect, an embodiment of the present application provides a computer program product comprising instructions, which, when executed on a terminal device, enables the terminal device to execute a power supply control method as described in the third aspect or any possible implementation of the third aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1It is a schematic diagram of the hardware structure of a terminal device provided in an embodiment of the present application; Figure 2A and Figure 2B It is a schematic diagram of the structure of a power supply control system of a terminal device proposed in an embodiment of the present application; Figure 3 It is a schematic diagram of the structure of a power supply control system of a terminal device proposed in an embodiment of the present application; Figure 4A to Figure 4D is a schematic diagram of a group of working state changes of a power supply system supplying power to a load proposed in an embodiment of the present application; Figure 5 It is a schematic diagram of the structure of a power supply control system of a terminal device proposed in an embodiment of the present application; Fig. 6A and Figure 6B is a schematic diagram of a group of working state changes of a power supply system supplying power to a load proposed in an embodiment of the present application; Figure 7 It is a schematic diagram of the structure of a power supply control system of a terminal device proposed in an embodiment of the present application; Figure 8A to Figure 8D is a schematic diagram of a group of working state changes of a power supply system supplying power to a load proposed in an embodiment of the present application; Fig. 9 It is a schematic diagram of the structure of a power supply control system of another terminal device proposed in an embodiment of the present application; Fig. 10A and Fig. 10B is a schematic diagram of a group of working state changes of a power supply system supplying power to a load proposed in an embodiment of the present application; Fig.11 This is a schematic diagram of the structure of a power supply control system of another terminal device proposed in an embodiment of the present application; Fig. 12A and Fig. 12B It is a schematic diagram of a group of working state changes of a power supply system supplying power to a load proposed in an embodiment of the present application. DETAILED DESCRIPTION

[0054] The terms used in the following embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to be used as limitations to the present application. As used in the specification and appended claims of the present application, the singular expressions "one", "a kind of", "said", "above", "the" and "this" are intended to also include plural expressions, unless there is a clear indication to the contrary in the context. It should also be understood that the term "and / or" used in the present application refers to and includes any or all possible combinations of one or more listed items.

[0055] The terminal device in the embodiments of the present application may be a mobile phone, a tablet computer, a desktop, a laptop computer, a handheld computer, a smart bracelet, a super mobile personal computer, a netbook, a personal phone, a personal data assistant, an augmented reality (AR) / virtual reality (VR) or other touch screen device. The present application does not limit the specific form of the terminal device.

[0056] The following introduces the terminal module structure of the terminal device involved in the embodiments of the present application. Figure 1 It is a schematic diagram of the structure of a power supply control system of a terminal device exemplarily disclosed in an embodiment of the present application.

[0057] like Figure 1 As shown, the terminal device may include an interface module, a switching charger (SC) system, a battery, a power management unit (PMU), an external boost module and a load system.

[0058] The interface module is connected to one end of the charging control module through the Vbus line, the other end of the charging control module is connected to the first end of the external boost module, the second end of the external boost module is connected to the battery, and the third end of the external boost module is connected to one end of the power management unit PMU. The other end of the power management unit PMU is connected to the load system, and the PMU provides the main power Vph_pwr to the load system for power supply.

[0059] The interface module can realize the charging function of the terminal device, and the interface module can be connected to an external power source to supply power to the battery and PMU of the terminal device through the interface module. For example, the interface module can be a type-C interface module.

[0060] The charging control system can be a voltage converter that can convert the input voltage into a lower voltage output. For example, the charging control system includes a charge pump system. When the charge pump system has a voltage transformer of 4:1, when the input voltage of the charge pump system is 20V, the output voltage is 5V, and the voltage is reduced by four times. The charging control system reduces the voltage and can be used to charge the battery module. The charge pump system can also have a voltage transformer of parameters such as 2:1 or 3:1, which is not limited in this application.

[0061] The battery is the energy storage unit of the terminal device. When the terminal device is connected to a charger, the battery stores electrical energy; when the terminal device is not connected to a charger, the battery provides electrical energy to the PMU module.

[0062] The PMU module is a power management integrated unit for terminal equipment, which can provide all the multi-level voltage power required by the main chip. Integrating several traditional discrete power management chips into the PMU can achieve higher power conversion efficiency and lower power consumption. The PMU can supply the same source power to the load system.

[0063] The external boost module can boost the voltage of the battery. The external boost module can be a boost circuit that can boost the output voltage of the battery to the voltage of the main power supply Vph_pwr required by the load system. For example, the external boost module converts the 3.8V power provided by the battery into a 5V voltage output.

[0064] The load system is the unit that consumes power in the terminal device, and the load system is the different working modules of the terminal device, such as processors (GPU, etc.), memory, RF devices, baseband devices, sensors, and screens, etc., which are not specifically limited in this application.

[0065] Optionally, the charging control module of the terminal device may include an overvoltage protection (OVP) module (not shown). The interface module and the charge pump system may be connected via the OVP module. The OVP module may perform overvoltage protection, that is, when the voltage exceeds a threshold, the voltage output or input may be stopped, thereby protecting the circuit and preventing the circuit from being damaged due to high voltage output.

[0066] Combined with the above Figure 1 The hardware module structure of the terminal device describes the charging and battery power supply paths of the terminal device respectively.

[0067] Path (1): Charging the battery through the interface module: When the terminal device is connected to an external charger (through the interface module external charger), power is supplied to the interface module. The interface module supplies voltage to the charging control system. The charging control system converts (steps down) the output voltage and then charges the battery.

[0068] Path (2): The battery supplies power to the load system through the PMU: When the terminal device is not connected to an external charger, the battery voltage is boosted by an external boost module, and the boosted voltage is provided to the load system through the PMU.

[0069] Path (3): Power the load system through the PMU via the interface module: When the terminal device is connected to an external charger, the interface module can provide the stepped-down voltage of the charging control module to the PMU module, and the PMU directly provides the voltage to the load system.

[0070] In the above power supply system, the battery supplies power to the load system, and an external boost module needs to be added, which has high device cost and occupies a large integration space.

[0071] In view of the above situation, the embodiment of the present application proposes a power supply control system and a terminal device. Figure 2A It is a schematic diagram of the structure of a power supply control system of a terminal device disclosed exemplarily in an embodiment of the present application.

[0072] like Figure 2A As shown, the terminal device may include a power supply control system. The power supply control system may include an interface module, a power supply system, a battery, a power management unit PMU and a load system. The contents of the interface module battery, power management unit PMU and load system can be referred to Figure 1 The relevant description is not repeated here.

[0073] The power supply system may include a charge pump system and an inductor switch module. One end of the charge pump system may be connected to one end of the inductor switch module, and the other end of the inductor switch module may be connected to a battery as the first end of the power supply system. The other end of the charge pump system may be connected to the interface module as the second end of the power supply system; and the third end of the power supply system may be connected to the PMU.

[0074] The inductor switch module includes a first switch module and a first inductor connected in parallel, the first end of the inductor switch module is one end of the first switch module and the first inductor connected in parallel, and the second end of the inductor switch module is the other end of the first switch module and the first inductor connected in parallel. Specifically, one end of the first inductor is connected to one end of the first switch module as the first end of the inductor switch module, and the other end of the first inductor is connected to the other end of the first switch module as the second end of the inductor switch module. The first end of the inductor switch module is connected to the first end of the charge pump system, and the second end of the inductor switch module (as the first end of the power supply system) is connected to the battery.

[0075] While the interface module supplies power to the battery, the output end of the charge pump system is connected to the PMU to supply power to the PMU. The voltage of the interface module can be directly provided to the PMU through the power supply system, and the PMU can directly supply power to the load system.

[0076] Combination Figure 2A The hardware structure of the terminal equipment, Figure 2B Schematic diagram of the hardware structure of a terminal device disclosed in an exemplary embodiment of the present application. Figure 2B As shown, the power supply system may include a charge pump system and an inductive switch module.

[0077] The electric switch module can control the power supply system to work as a charge pump system or as a boost circuit. In the process of charging the battery, the terminal device controls the first switch module to be in the on state. When the first switch module is in the on state, the power supply system uses the charge pump system to work. At this time, the voltage of the interface module is stepped down by the charge pump system and then charged to the battery. When the battery supplies power to the load through the power supply system, the first switch module is controlled to be in the off state. When the first switch module is in the off state, the first inductor is connected to the circuit to form a reverse buck circuit (boost circuit). The boost circuit boosts the battery voltage and supplies power to the PMU. The PMU will no longer boost the boosted voltage and supply power to the load system.

[0078] The charge pump system may include a transformer, a second switch module Q2 and a third switch module Q3. The first end of Q2 is connected to the interface module as the second end of the charge pump system; the first end of Q3 is connected to one end of the PMU as the third end of the charge pump system. The second end of Q2 is connected to the second end of Q3 and the first end of the transformer. The second end of the transformer is the first end of the charge pump system.

[0079] Combine the following Figure 2A and Figure 2B The structure of the power supply control system is shown in the figure, which explains the paths of terminal device charging and battery power supply respectively.

[0080] Path (4): Charging the battery through the interface module: When the terminal device is connected to an external charger (through the interface module external charger), power is supplied to the interface module. The interface module supplies voltage to the charging control system. The charging control system converts the output voltage and charges the battery module. During the process of the interface module charging the battery, the transformer can step down the voltage of the interface module and output the voltage for charging the battery.

[0081] Path (5): The battery supplies power to the load system through the PMU: When the terminal device is not connected to an external charger, the battery boosts the battery voltage through the inductor switch module and the charge pump system in the power supply system, and provides the boosted voltage to the PMU, which directly provides the boosted voltage to the load system. In the process of the battery supplying power to the outside, the first inductor L1 in the inductor switch module and the charge pump system of the PMU module are combined to form a boost circuit, and there is no need to add a boost module after the PMU module.

[0082] Path (6): Power the load system through the PMU via the interface module: When the terminal device is connected to an external charger, the interface module can provide voltage to the PMU module through the power supply system, and the PMU module does not need to transform the voltage afterwards. The voltage of the PMU is provided to the load system.

[0083] Compared to Figure 1 The hardware module structure in Figure 2A and Figure 2B The terminal device does not need to be equipped with an external boost module separately, which saves the space structure and device cost of circuit integration and improves the power supply performance of the power supply system.

[0084] Figure 2A and Figure 2B In the power supply system, the voltage change of the charge pump system can be 2:1 ( Figure 3~Figure 4D ), 3:1 ( Figure 5~Figure 6B ) or 4:1 ( Figure 7 to Figure 12B ) Different types. The circuits formed by charge pump systems with different structures and the control logic of the charging control module are different. The following describes the power supply control system structures and control methods corresponding to several different charge pump systems.

[0085] First, through Figure 3 The invention describes a power supply control system and a power supply control method formed by a charge pump system with a pressure plate parameter of 2:1. Figure 3 It is a schematic diagram of the structure of a power supply control system of a terminal device exemplarily disclosed in an embodiment of the present application.

[0086] like Figure 3 As shown, the charge pump system is a 2:1 voltage transformer type. The charge pump system includes a second switch module Q2, a third switch module Q3, a fourth switch module Q4, a fifth switch module Q5, a sixth switch module Q6, a seventh switch module Q7, a first capacitor C1 and a second capacitor C2. The first end of Q2 is connected to the interface module as the second end of the charge pump system. The second end of Q2 is connected to the first end of Q3 and the first end of Q4. The second end of Q3 is connected to the first end of C2 and is connected to the PMU as the third end of the charge pump system. The second end of Q4 is connected to the first end of Q5 and the first end of C1; the second end of Q5 is connected to the first end of Q6 and is connected to the first end of the inductor switch module as the first end of the charge pump system; the second end of Q6 is connected to the second end of C1 and the first end of Q7, and the second end of Q7 and the second end of C2 are grounded. C2 can be a voltage stabilizing capacitor at the output (input) end of the battery.

[0087] Combination Figure 2A and Figure 2B As shown, Figure 3The inductor switch module may include a first inductor L1 and a first switch module Q1, one end of L1 is connected to the first end of Q1, and the first end of the inductor switch module is connected to the first end of the charge pump system. The other end of L1 is connected to the other end of Q1, and the second end of the inductor switch module is connected to the battery.

[0088] The switch module in the present application may be an insulated gate bipolar transistor IGBT (Insulated Gate Bipolar Transistor), an insulated gate field effect transistor MOS (Metal-Oxide-Semiconductor), or other types of switches. The present application does not limit the specific type.

[0089] Optionally, the terminal device may further include a power supply control module ( Figure 3 (not shown), the power supply control module is used to control the conduction and cutoff of all switch modules in the power supply system. Different state combinations formed by all switch modules in the power supply system correspond to different working states of the power supply system. The power supply control module can be connected to the control end of each switch module in the power supply system respectively, and the working state of the power supply system is controlled by the signal of the control end of the control switch module. The power supply control module can control the first switch module Q1, the second switch module Q2, the third switch module Q3, the fourth switch module Q4, the fifth switch module Q5, the sixth switch module Q6, and the seventh switch module Q7, all of which include a third end. The third ends of Q1, Q2, Q3, Q4, Q5, Q6 and Q7 can all be connected to the power supply control module, and the power supply control module can control the conduction and cutoff of the corresponding switch tubes through the third ends of Q1, Q2, Q3, Q4, Q5, Q6 and Q7. Exemplarily, when the power supply control module provides a high level to the third end of Q2, Q2 is in a conducting state; when the power supply control module provides a low level to the third end of Q2, Q2 is in a cutoff state (which can be regarded as disconnected). The control logic of Q1, Q3, Q4, Q5, Q6 and Q7 is similar to the description of Q2 and will not be repeated here.

[0090] The power supply control module controls different switch state combinations of Q1, Q2, Q3, Q4, Q5, Q6 and Q7 to realize the functions of charging the battery and supplying power to the load from the battery.

[0091] First, when the terminal device meets the conditions for charging the battery, Q1 is controlled to be in the on state.

[0092] like Figure 3 As shown, when charging, Q2 and Q1 are turned on, and switches Q4, Q5, Q6, Q7 and C1 form a 2:1 voltage-converting charge pump, which provides power to the battery after the voltage is stepped down by the step-down charge pump. At this time, Q3 can be turned on and the interface module can directly supply power to the PMU.

[0093] The charging condition may be that the terminal device is connected to an external power source, the battery is within a chargeable temperature range, and the battery is not yet fully charged.

[0094] Second, when the terminal device meets the conditions for the battery to supply power to the outside, Q1 is controlled to be in the cut-off state.

[0095] Figure 4A to Figure 4D The present application embodiment provides a schematic diagram of a group of working state changes of a power supply system supplying power to a load. Figure 4A to Figure 4D The power supply control method of the power supply control module is described as follows: When the battery supplies power to the PMU, Q1 and Q2 are turned off, and Q3, Q4, Q5, Q6, Q7, L1 and C1 form a boost circuit. As the Q4, Q5, Q6 and Q7 switch modules are switched, the circuit goes through three working stages (four working states): inductor energy storage, inductor energy release and capacitor charging and discharging, so that the battery voltage can be boosted and input to the PMU module.

[0096] When the battery supplies power to the PMU, the terminal device may control the switch module of the power supply system to switch in turn according to the first state, the second state, the third state and the fourth state.

[0097] First state: control Q3, Q4 and Q5 to be turned on; Q1, Q2, Q6 and Q7 to be turned off.

[0098] like Figure 4A As shown, the battery supplies power to the PMU through L1-Q5-Q4-Q3. The battery charges L1 and C2, and the capacitor voltage of C2 rises.

[0099] Second state: control Q5 and Q7 to be turned on; Q1, Q2, Q3, Q4 and Q6 to be turned off.

[0100] like Figure 4B As shown, the battery charges L1 and C1, and C2 discharges to the load. The battery charges L1 and C1, and the voltage of C1 capacitor rises; C2 transfers the energy stored in the first state to the output end, and the voltage across C2 drops. At this time, C2 supplies power to the PMU.

[0101] The third state: control Q3, Q4 and Q6 to be turned on; Q1, Q2, Q5 and Q7 to be turned off.

[0102] like Figure 4C As shown in the figure, since a voltage difference is formed across the capacitor C1 in the second state, the third state is switched to connect C1 in series with the power supply, and the voltage difference is increased on the basis of the power supply outputting one times the power supply, and the output end of the PMU forms a boost logic. At the same time, the battery charges L1, C1 and C2, and a voltage difference is formed across C1 and C2.

[0103] Fourth state: control Q6 and Q7 to be turned on; Q1, Q2, Q3, Q4 and Q5 to be turned off.

[0104] like Figure 4D As shown, L1 stores energy, the battery stores energy for L1, the second capacitor C2 supplies power to the output end, and the voltage across the capacitor C2 drops.

[0105] In addition, in order to meet the needs of different voltages, the electronic device can adjust the working time of the first state, the second state, the third state and the fourth state, that is, the output voltage can be adjusted by adjusting the duty cycle of each switch module.

[0106] In the above process, the above four states are switched in sequence to form a boost circuit, so that the battery voltage can be increased, and the output voltage is transmitted to the load through the PMU, and the PMU output voltage is reduced and then boosted through an external circuit, saving device costs and integration space.

[0107] The terminal device is in two modes: a battery charging mode and a battery discharging mode. The on and off of Q1 can correspondingly switch between the two states to ensure the normal power supply process of the circuit.

[0108] Secondly, through Figure 5 The power supply system and control method of the charge pump system with a pressure plate parameter of 3:1 are described. Figure 5 It is a schematic diagram of the structure of a power supply control system of a terminal device exemplarily disclosed in an embodiment of the present application.

[0109] like Figure 5 As shown, the charge pump system has a voltage change of 3:1. The charge pump system includes a second switch module Q2, a third switch module Q3, an eighth switch module Q8, a ninth switch module Q9, a tenth switch module Q10, an eleventh switch module Q11, a twelfth switch module Q12, a thirteenth switch module Q13, a third capacitor C3 and a fourth capacitor C4.

[0110] The interface module is connected to the first end of Q2, the power management module is connected to the first end of Q3, and the second end of Q2 is connected to the second end of Q3, the first end of Q8 and the first end of C3. The second end of C3 is connected to the first end of Q9 and the first end of Q10. The second end of Q8 is connected to the second end of Q9, the first end of Q11 and the first end of C4. The second end of C4 is connected to the first end of Q12 and the first end of Q13. The second end of Q11 is connected to the second end of Q12 and is connected to the first end of the inductor switch module as the first end of the charge pump system (i.e., the second end of the transformer). The second end of Q10 and the second end of Q13 are grounded.

[0111] Among them, the inductive switch module, interface module, power management module and load system can refer to Figure 2A and Figure 2B The relevant description is not repeated here.

[0112] First, when the terminal device meets the conditions for charging the battery, Q1 and Q2 are controlled to be in the on state. At this time, Q3 can be in the on state, and the interface module can directly supply power to the PMU.

[0113] The terminal device can control Q8, Q9, Q10, Q11, Q12 and Q13, as well as C3 and C4 to form a control circuit of a 3:1 charge pump system, and control the interface module to charge the battery.

[0114] Second, when the terminal device meets the conditions for the battery to supply power to the outside, Q1 and Q2 are controlled to be in the cut-off state.

[0115] Fig. 6A and Figure 6B The present application embodiment provides a schematic diagram of a group of working state changes of a power supply system supplying power to a load. Fig. 6A and Figure 6B The power supply control method of the power supply control module is described below: The power supply control module controls different switch state combinations of Q1, Q2, Q3, Q4, Q5, Q6 and Q7 to realize the functions of charging the battery and supplying power to the battery load. Figure 6A~Figure 6B The present application provides a schematic diagram of a power supply system structure. Fig. 6A and Figure 6B The power supply control method of the power supply control module is described below: When the battery supplies power to the PMU, the terminal device may control the power supply system to alternately switch between the first state and the second state.

[0116] First state: control Q3, Q8, Q10, Q11 and Q13 to be turned on; control Q1, Q2, Q9 and Q12 to be turned off.

[0117] like Fig. 6A As shown in Figure 1, the battery charges L1, C3, and C4 and supplies power to the PMU. The input voltage flows through the inductor L1 to the capacitors C3 and C4, and the voltage of the capacitors C3 and C4 rises. At this time, the battery supplies power to the PMU through the path of L1-Q11-Q8-Q3.

[0118] Second state: control Q3, Q9 and Q12 to be turned on; Q1, Q2, Q8, Q10, Q11 and Q13 to be turned off.

[0119] like Figure 6BAs shown, a conduction path of L1-Q12-C4-Q9-C3-Q3 is formed. In the first state, C3 and C4 form a voltage difference in the first state. Therefore, after switching to the second state, the voltage of the Q3 port increases the voltage difference formed between C3 and C4 on the basis of the battery voltage, and the Q3 port supplies power to the PMU to form a boost.

[0120] It should be noted that, in order to form different boost results (ratios), the electronic device can adjust the duty cycle of the switch module in the first state and the second state, so as to meet different needs, which is not limited in the present application.

[0121] Finally, the power supply system and control method formed by the charge pump system with a pressure plate parameter of 4:1 are explained. Figure 7 to Figure 12B The following is a schematic diagram of the power supply system structure of several terminal devices disclosed by way of example in the embodiments of the present application. The power supply control method of the power supply control module is described below in combination with different 4:1 charge pump systems.

[0122] Combine the following Figure 7~Figure 8D A power supply system of a 4:1 transformer system is described.

[0123] Figure 7 It is a schematic diagram of the structure of a power supply control system of a terminal device exemplarily disclosed in an embodiment of the present application.

[0124] like Figure 7 As shown, the charge pump system is a 4:1 voltage transformer. The charge pump system includes a second switch module Q2, a third switch module Q3, a fourteenth switch module Q14, a fifteenth switch module Q15, a sixteenth switch module Q16, a seventeenth switch module Q17, an eighteenth switch module Q18, a nineteenth switch module Q19, a twentieth switch module Q20, a twenty-first switch module Q21, a twenty-second switch module Q22, a twenty-third switch module Q23, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7 and an eighth capacitor C8.

[0125] The interface module is connected to the first end of Q2, the power management module is connected to the first end of Q3, and the second end of Q2 is connected to the second end of Q3, the first end of Q14, and the first end of C5. The second end of Q14 is connected to the second end of Q15 and the first end of C6. The second end of C6 is connected to the first end of Q16 and the first end of Q17. The second end of Q17 is connected to the second end of Q18 and the first end of C7. The second end of C7 is connected to the first end of Q19 and the first end of Q20. The second end of Q20 is connected to the second end of Q21 and the first end of C8, and the second end of C8 is connected to the first end of Q22 and the first end of Q23. The first end of Q15 is connected to the first end of Q18, the first end of Q21, and the second end of Q23, and is connected to one end of the inductor switch module as one end of the charge pump system. The second end of C5, the second end of Q16, the second end of Q19, and the second end of Q22 are grounded. C5 is a voltage stabilizing capacitor at the output end (input end).

[0126] Among them, the inductive switch module, interface module, power management module and load system can refer to Figure 2A and Figure 2B The relevant description is not repeated here.

[0127] First, when the terminal device meets the conditions for charging the battery, Q1 and Q2 are controlled to be in the on state. At this time, during the charging process, Q3 can be in the on state, and the interface module can directly supply power to the PMU.

[0128] like Figure 7 As shown, the terminal device can control Q14, Q15, Q16, Q17, Q18, Q19, Q20, Q21, Q22 and Q23, as well as C5, C6, C7 and C8 to form a control circuit of a 4:1 charge pump system to control the interface module to charge the battery.

[0129] Second, when the terminal device meets the conditions for the battery to supply power to the outside, Q1 and Q2 are controlled to be in the cut-off state.

[0130] exist Figure 7 On the basis of Figure 8A to Figure 8D The present application embodiment provides a schematic diagram of a group of working state changes of a power supply system supplying power to a load. Figure 8A to Figure 8D The power supply control method of the power supply control module is described below: When the battery supplies power to the PMU, the terminal device may control the switch module of the power supply system to switch in turn according to the first state, the second state, the third state and the fourth state.

[0131] First state: Q3, Q14 and Q15 are turned on; Q1, Q2, Q16, Q17, Q18, Q19, Q20, Q21, Q22 and Q23 are turned off.

[0132] like Fig. 8A As shown, the PMU is powered through the conduction path of L1-Q15-Q14-Q3. In addition, the battery transfers energy to the inductor L1 and the capacitor C5, and the voltage across the capacitor C5 rises.

[0133] Second state: Q3, Q14, Q15, Q16, Q18, Q19, Q21 and Q22 are turned on; Q1, Q2, Q17, Q20 and Q23 are turned off.

[0134] like Figure 8B As shown, the PMU is powered through the conduction path of L1-Q15-Q14-Q3. The battery charges L1, C5, C6, C7 and C8, and the voltage across C5, C6, C7 and C8 rises, forming a voltage difference.

[0135] The third state: Q3, Q14, Q17, Q20 and Q23 are turned on; Q1, Q2, Q15, Q16, Q18, Q19, Q21 and Q22 are turned off.

[0136] like Figure 8C As shown, a conduction path of L1-Q23-C8-Q20-C7-Q17-C6-Q14-Q3 is formed. Since there is a voltage difference across C6, C7 and C8 in the second state, switch to the third state, connect C6, C7 and C8 in series with L1, increase the voltage difference between C6, C7 and C8 on the basis of the battery output voltage, and form a higher voltage at the output end of Q3, thereby raising the output voltage. At this time, the conduction path of L1-Q23-C8-Q20-C7-Q17-C6-Q14-C5, the battery charges C5, and the voltage across C5 increases.

[0137] Fourth state: Q3, Q22 and Q23 are turned on; Q1, Q2, Q14, Q15, Q16, Q17, Q18, Q19 and Q21 are turned off.

[0138] like Fig.8D As shown, a conduction path of L1-Q23-Q22 is formed. At the same time, when switching from the third state to the fourth state, the voltage across C5 begins to decrease, C5 transfers energy to the output end, and C5 supplies power to the PMU.

[0139] It should be noted that in order to meet the needs of different output voltages, the working time of the first state, the second state, the third state and the fourth state can be adjusted, that is, the output voltage can be adjusted by adjusting the duty cycle of each switch module.

[0140] Combine the following Figure 9~Figure 10B A power supply system of a 4:1 transformer system is described.

[0141] Fig. 9 It is a schematic diagram of the structure of a power supply control system of another terminal device exemplarily disclosed in an embodiment of the present application.

[0142] like Fig. 9 As shown, the charge pump system is another 4:1 voltage transformer. The charge pump system includes a second switch module Q2, a third switch module Q3, a twenty-fourth switch module Q24, a twenty-fifth switch module Q25, a twenty-sixth switch module Q26, a twenty-seventh switch module Q27, a twenty-eighth switch module Q28, a twenty-ninth switch module Q29, a thirtieth switch module Q30, a ninth capacitor C9, a tenth capacitor C10 and an eleventh capacitor C11.

[0143] The interface module is connected to the first end of Q2, the power management module is connected to the first end of Q3, and the second end of Q2 is connected to the second end of Q3, the first end of Q24, and the first end of C9. The second end of Q24 is connected to the first end of Q25 and the first end of C10. The second end of Q25 is connected to the first end of Q26 and the first end of C11. The second end of Q26 is connected to the first end of Q27 and the first end of Q28, and is connected to one end of the inductor switch module as one end of the charge pump system. The second end of Q27 is connected to the second end of C10 and the first end of Q29. The second end of Q28 is connected to the first end of Q30, the second end of C9, and the second end of C11. The second end of Q29 and the second end of Q30 are grounded.

[0144] Among them, the inductive switch module, interface module, power management module and load system can refer to Figure 2A and Figure 2B The relevant description is not repeated here.

[0145] First, when the terminal device meets the conditions for charging the battery, Q1 and Q2 are controlled to be in the on state. During the charging process, Q3 can be in the on state, and the interface module can directly supply power to the PMU.

[0146] like Fig. 9 As shown, the terminal device can control Q24, Q25, Q26, Q27, Q28, Q29, Q30, and C5, C9, C10 and C11 to form a control circuit of a 4:1 charge pump system to control the interface module to charge the battery.

[0147] Second, when the terminal device meets the conditions for the battery to supply power to the outside, Q1 and Q2 are controlled to be in the cut-off state.

[0148] exist Fig. 9 On the basis of Fig. 10A and Fig. 10B The present application embodiment provides a schematic diagram of a group of working state changes of a power supply system supplying power to a load. Fig. 10A and Fig. 10B The power supply control method of the power supply control module is described below: When the battery supplies power to the PMU, the terminal device controls the switch module of the power supply system to switch alternately between the first state and the second state as follows; First state: control Q24, Q26, Q27 and Q30 to be turned on; Q1, Q2, Q3, Q25, Q28 and Q29 to be turned off.

[0149] like Fig. 10A As shown, in the first state, the battery is connected to L1 and is divided into two parallel capacitors for grounding. The first path is L1-Q26-C11-Q30. The second path is L1-Q27-C10-Q24-C9-Q30. At this time, the battery voltage can be the voltage across C11; the battery voltage can be the voltage across C9 and C10 after they are connected in series.

[0150] Second state: control Q3, Q25, Q28, Q29 to be turned on, and Q1, Q2, Q24, Q26, Q27, and Q30 to be turned off.

[0151] like Fig. 10B As shown, in the second state, the battery is connected to L1 and is also conducted in two paths. The first path is L1-Q28-C11-Q25-C10-Q29, and the second path is L1-Q28-C9-Q3. At this time, the battery voltage can be the voltage at both ends of C11 and C10 in series; the voltage output to the PMU can be the voltage after the battery voltage is boosted by C9.

[0152] After switching between the first state and the second state, Fig. 9 The circuit can form a boost.

[0153] It should be noted that in order to adapt to different boosting requirements, the working time of the first state and the second state can be adjusted, that is, the magnitude of the output voltage can be adjusted by adjusting the duty cycle of each switch module.

[0154] Combine the following Figure 11 to Figure 12B A power supply system of a 4:1 transformer system is described.

[0155] Fig.11 It is a schematic diagram of the structure of a power supply control system of another terminal device exemplarily disclosed in an embodiment of the present application.

[0156] like Fig.11As shown, the charge pump system is another 4:1 voltage transformer. The charge pump system includes a second switch module Q2, a third switch module Q3, a thirty-first switch module Q31, a thirty-second switch module Q32, a thirty-third switch module Q33, a thirty-fourth switch module Q34, a thirty-fifth switch module Q35, a thirty-sixth switch module Q36, a thirty-seventh switch module Q37, a thirty-eighth switch module Q38, a thirty-ninth switch module Q39, a fortieth switch module Q40, a forty-first switch module Q41, a forty-second switch module Q42, a forty-third switch module Q43, a forty-fourth switch module Q44, a twelfth capacitor C12, a thirteenth capacitor C13, a fourteenth capacitor C14 and a fifteenth capacitor C15.

[0157] The interface module is connected to the first end of Q2, the power management module is connected to the first end of Q3, and the second end of Q2 is connected to the second end of Q3, the first end of Q31, and the first end of Q32. The second end of Q31 is connected to the first end of Q33 and the first end of C12. The second end of Q32 is connected to the first end of Q34 and the first end of C13. The second end of Q33 is connected to the first end of Q35, the first end of Q36, and the first end of C15. The second end of Q34 is connected to the first end of Q37, the first end of Q38, and the first end of C14. The second end of Q37 is connected to the second end of C12 and the first end of Q39. The second end of Q36 is connected to the second end of C13 and the first end of Q44. The second end of Q38 is connected to the first end of Q40, the second end of Q35, and the first end of Q42, and is connected to one end of the inductor switch module as the first end of the charge pump system. The second end of Q40 is connected to the second end of C14 and the first end of Q41. The second end of Q42 is connected to the first end of Q43 and the first end of C15. The second end of Q39 , the second end of Q41 , the second end of Q43 , and the second end of Q44 are grounded.

[0158] Among them, the inductive switch module, interface module, power management module and load system can refer to Figure 2A and Figure 2B The relevant description is not repeated here.

[0159] First, when the terminal device meets the conditions for charging the battery, Q1 and Q2 are controlled to be in the on state. During the charging process, Q3 can be in the on state, and the interface module can directly supply power to the PMU.

[0160] like Fig.11As shown, the terminal device can control Q31, Q32, Q33, Q34, Q35, Q36, Q37, Q38, Q39, Q40, Q41, Q42, Q43, and C12, C13, C14 and C15 to form a control circuit of a 4:1 charge pump system, and control the interface module to charge the battery. When the battery supplies power to the PMU, the terminal device controls the switch module of the power supply system to alternately switch between the following first state and the second state.

[0161] Second, when the terminal device meets the conditions for the battery to supply power to the outside, Q1 and Q2 are controlled to be in the cut-off state.

[0162] exist Fig.11 On the basis of Fig. 12A and Fig. 12B The present application embodiment provides a schematic diagram of a group of working state changes of a power supply system supplying power to a load. Fig. 12A and Fig. 12B The power supply control method of the power supply control module is described below: First state: control Q3, Q32, Q33, Q36, Q38, Q39, Q41 and Q42 to be turned on; Q1, Q2, Q31, Q34, Q35, Q37, Q40, Q43 and Q44 to be turned off.

[0163] like Fig. 12A As shown, in the first state, after the battery is connected to L1, two series capacitors are grounded, and one series capacitor supplies power to the PMU. Among them, the first conduction path is: L1-Q38-C14-Q41, and the battery voltage can be the voltage across L1 and C14; the second conduction path is: L1-Q42-C15-Q33-C12-Q39, and the battery voltage can be the voltage across C15 and C12 after being connected in series; the third conduction path is: L1-Q42-C15-Q36-C13-Q32-Q3, supplying power to the PMU, and the power supply voltage from the output end to the PMU can be the voltage of the battery voltage after being boosted by L1, C15 and C13.

[0164] Second state: control Q3, Q31, Q34, Q35, Q37, Q40, Q43 and Q44 to be turned on; Q1, Q2, Q32, Q33, Q36, Q38, Q39, Q41 and Q42 to be turned off.

[0165] like Fig. 12BAs shown, in the second state, after the battery is connected to L1, two series capacitors are grounded, and one series capacitor supplies power to the PMU. Among them, the first conduction path is: L1-Q35-C15-Q43, and the battery voltage can be the voltage across L1 and C15. The second conduction path is: L1-Q40-C14-Q34-C13-Q44, and the battery voltage can be the voltage across L1, C14 and C13 after they are connected in series, that is, Vbattery = Vc13-Vc14; the third conduction path is: L1-Q40-C14-Q37-C12-Q31-Q3, which supplies power to the PMU, and the power supply voltage from the output end to the PMU is the voltage of the battery voltage after being boosted by L1, C14 and C12.

[0166] After switching between the first state and the second state, the battery voltage can be boosted and the boosted voltage can be provided to the PMU. The above process can boost the battery voltage. In addition, in order to adapt to different boost requirements, the working time of the first state and the second state can be adjusted, that is, the output voltage can be adjusted by adjusting the duty cycle of each switch module.

[0167] It should be noted that Figure 3 to Figure 12B Only some charge pump systems are described. There are other charge pump systems that can also use the usage scenarios of this application. They all fall within the protection scope of this application and will not be listed one by one.

[0168] As used in the above embodiments, the term "when..." may be interpreted to mean "if..." or "after..." or "in response to determining..." or "in response to detecting...", depending on the context. Similarly, the phrases "upon determining..." or "if (the stated condition or event) is detected" may be interpreted to mean "if determining..." or "in response to determining..." or "upon detecting (the stated condition or event)" or "in response to detecting (the stated condition or event)", depending on the context.

[0169] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website site, computer, server or data center to another website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state hard disk), etc.

[0170] Those skilled in the art can understand that to implement all or part of the processes in the above-mentioned embodiments, the processes can be completed by computer programs to instruct related hardware, and the programs can be stored in computer-readable storage media. When the programs are executed, they can include the processes of the above-mentioned method embodiments. The aforementioned storage media include: ROM or random access memory RAM, magnetic disk or optical disk and other media that can store program codes.

Claims

1. A terminal device, characterized in that: The terminal device includes an interface module, a power management unit PMU, a battery, a load system and a power supply system; wherein: The power supply system includes a charge pump system and an inductor switch module, wherein a first end of the inductor switch module is connected to a first end of the charge pump system, and a second end of the inductor switch module is connected to the battery; a second end of the charge pump system is connected to the interface module, a third end of the charge pump system is connected to one end of the PMU, and the other end of the PMU is connected to the load system; The inductor switch module includes a first switch module Q1 and a first inductor connected in parallel, a first end of the inductor switch module is one end of the parallel Q1 and the first inductor, and a second end of the inductor switch module is the other end of the parallel Q1 and the first inductor.

2. The terminal device according to claim 1, characterized in that: When the battery is charged through the interface module, Q1 is in an on state, and the charge pump system steps down the input voltage of the interface module; when the battery supplies power to the PMU through the power supply system, Q1 is in an off state, and the power supply system steps up the battery voltage.

3. The terminal device according to claim 2, characterized in that: The charge pump system includes a second switch module Q2, a third switch module Q3 and a transformer; the first end of Q2 is the second end of the charge pump system, and the first end of Q3 is the third end of the charge pump system; the second end of Q2 is connected to the second end of Q3 and the first end of the transformer, and the second end of the transformer is the first end of the charge pump system.

4. The terminal device according to claim 3, characterized in that: The transformer includes a fourth switch module Q4, a fifth switch module Q5, a sixth switch module Q6, a seventh switch module Q7, a first capacitor C1 and a second capacitor C2; Among them, the first end of the Q4 is connected to the second end of the Q2 and the second end of the Q3; the second end of the Q4 is connected to the first end of the Q5 and the first end of the C1; the second end of the Q5 is connected to the first end of the Q6 and is the first end of the charge pump system; the second end of the Q6 is connected to the second end of the C1 and the first end of the Q7, and the second end of the Q7 and the second end of the C2 are grounded; the first end of the Q3 is connected to the first end of the C2.

5. The terminal device according to claim 4, characterized in that: When the battery supplies power to the PMU, the switch module of the power supply system switches in turn according to the first state, the second state, the third state and the fourth state; In the first state, Q3, Q4 and Q5 are in an on state; Q1, Q2, Q6 and Q7 are in an off state; In the second state, the Q5 and Q7 are in the on state; the Q1, Q2, Q3, Q4 and Q6 are in the off state; In the third state, Q3, Q4 and Q6 are in an on state; Q1, Q2, Q5 and Q7 are in an off state; In the fourth state, the Q6 and the Q7 are in the on state; the Q1, the Q2, the Q3, the Q4, and the Q5 are in the off state.

6. The terminal device according to claim 3, characterized in that: The transformer includes an eighth switch module Q8, a ninth switch module Q9, a tenth switch module Q10, an eleventh switch module Q11, a twelfth switch module Q12, a thirteenth switch module Q13, a third capacitor C3 and a fourth capacitor C4; Wherein, the second end of the Q2 is connected to the second end of the Q3, the first end of the Q8 and the first end of the C3; the second end of the C3 is connected to the first end of the Q9 and the first end of the Q10; the second end of the Q8 is connected to the second end of the Q9, the first end of the Q11 and the first end of the C4; the second end of the C4 is connected to the first end of the Q12 and the first end of the Q13; the second end of the Q11 is connected to the second end of the Q12 and is the first end of the charge pump system; the second end of the Q10 and the second end of the Q13 are grounded.

7. The terminal device according to claim 6, characterized in that: When the battery supplies power to the PMU, the switch module of the power supply system switches alternately between the first state and the second state; In the first state, the Q3, the Q8, the Q10, the Q11 and the Q13 are in the on state; the Q1, the Q2, the Q9 and the Q12 are in the off state; In the second state, the Q3, the Q9 and the Q12 are in the on state; the Q1, the Q2, the Q8, the Q10, the Q11 and the Q13 are in the off state.

8. The terminal device according to claim 3, characterized in that: The transformer includes a fourteenth switch module Q14, a fifteenth switch module Q15, a sixteenth switch module Q16, a seventeenth switch module Q17, an eighteenth switch module Q18, a nineteenth switch module Q19, a twentieth switch module Q20, a twenty-first switch module Q21, a twenty-second switch module Q22, a twenty-third switch module Q23, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7 and an eighth capacitor C8; Wherein, the second end of the Q2 is connected to the second end of the Q3, the first end of the Q14 and the first end of the C5; the second end of the Q14 is connected to the second end of the Q15 and the first end of the C6; the second end of the C6 is connected to the first end of the Q16 and the first end of the Q17; the second end of the Q17 is connected to the second end of the Q18 and the first end of the C7; the second end of the C7 is connected to the first end of the Q19 and the first end of the Q20; the second end of the Q20 is connected to the second end of the Q21 and the first end of the C8; the second end of the C8 is connected to the first end of the Q22 and the first end of the Q23; the first end of the Q15 is connected to the first end of the Q18, the first end of the Q21 and the second end of the Q23, and is the first end of the charge pump system; the second end of the C5, the second end of the Q16, the second end of the Q19 and the second end of the Q22 are grounded.

9. The terminal device according to claim 8, characterized in that: When the battery supplies power to the PMU, the switch module of the power supply system switches in turn according to the first state, the second state, the third state and the fourth state; In the first state, Q3, Q14 and Q15 are in the on state; Q1, Q2, Q16, Q17, Q18, Q19, Q20, Q21, Q22 and Q23 are in the off state; In the second state, the Q3, the Q14, the Q15, the Q16, the Q18, the Q19, the Q21 and the Q22 are in the on state; the Q1, the Q2, the Q17, the Q20 and the Q23 are in the off state; In the third state, the Q3, the Q14, the Q17, the Q20 and the Q23 are in the on state; the Q1, the Q2, the Q15, the Q16, the Q18, the Q19, the Q21 and the Q22 are in the off state; In the fourth state, the Q3, the Q22 and the Q23 are in the on state; the Q1, the Q2, the Q14, the Q15, the Q16, the Q17, the Q18, the Q19 and the Q21 are in the off state.

10. The terminal device according to claim 3, characterized in that: The transformer includes a twenty-fourth switch module Q24, a twenty-fifth switch module Q25, a twenty-sixth switch module Q26, a twenty-seventh switch module Q27, a twenty-eighth switch module Q28, a twenty-ninth switch module Q29, a thirtieth switch module Q30, a ninth capacitor C9, a tenth capacitor C10 and an eleventh capacitor C11; Wherein, the second end of the Q2 is connected to the second end of the Q3, the first end of the Q24 and the first end of the C9; the second end of the Q24 is connected to the first end of the Q25 and the first end of the C10; the second end of the Q25 is connected to the first end of the Q26 and the first end of the C11; the second end of the Q26 is connected to the first end of the Q27 and the first end of the Q28, and is the first end of the charge pump system; the second end of the Q27 is connected to the second end of the C10 and the first end of the Q29; the second end of the Q28 is connected to the first end of the Q30, the second end of the C9 and the second end of the C11; the second end of the Q29 and the second end of the Q30 are grounded.

11. The terminal device according to claim 10, characterized in that: When the battery supplies power to the PMU, the switch module of the power supply system switches alternately between the first state and the second state; In the first state, the Q24, the Q26, the Q27 and the Q30 are in the on state; the Q1, the Q2, the Q3, the Q25, the Q28 and the Q29 are in the off state; In the second state, the Q3, the Q25, the Q28 and the Q29 are in the on state; the Q1, the Q2, the Q24, the Q26, the Q27 and the Q30 are in the off state.

12. The terminal device according to claim 3, characterized in that: The transformer includes a thirty-first switch module Q31, a thirty-second switch module Q32, a thirty-third switch module Q33, a thirty-fourth switch module Q34, a thirty-fifth switch module Q35, a thirty-sixth switch module Q36, a thirty-seventh switch module Q37, a thirty-eighth switch module Q38, a thirty-ninth switch module Q39, a fortieth switch module Q40, a forty-first switch module Q41, a forty-second switch module Q42, a forty-third switch module Q43, a forty-fourth switch module Q44, a twelfth capacitor C12, a thirteenth capacitor C13, a fourteenth capacitor C14 and a fifteenth capacitor C15; Wherein, the second end of Q2 is connected to the second end of Q3, the first end of Q31 and the first end of Q32; the second end of Q31 is connected to the first end of Q33 and the first end of C12; the second end of Q32 is connected to the first end of Q34 and the first end of C13; the second end of Q33 is connected to the first end of Q35, the first end of Q36 and the first end of C15; the second end of Q34 is connected to the first end of Q37, the first end of Q38 and the first end of C14; the second end of Q37 is connected to the first end of C12 The second end of Q36 is connected to the second end of C13 and the first end of Q44; the second end of Q38 is connected to the first end of Q40, the second end of Q35 and the first end of Q42, and is the first end of the charge pump system; the second end of Q40 is connected to the second end of C14 and the first end of Q41; the second end of Q42 is connected to the first end of Q43 and the first end of C15; the second end of Q39, the second end of Q41, the second end of Q43 and the second end of Q44 are grounded.

13. The terminal device according to claim 12, characterized in that: When the battery supplies power to the PMU, the switch module of the power supply system switches alternately between the first state and the second state; In the first state, the Q3, the Q32, the Q33, the Q36, the Q38, the Q39, the Q41 and the Q42 are in the on state; the Q1, the Q2, the Q31, the Q34, the Q35, the Q37, the Q40, the Q43 and the Q44 are in the off state; In the second state, the Q3, the Q31, the Q34, the Q35, the Q37, the Q40, the Q43 and the Q44 are in the on state; the Q1, the Q2, the Q32, the Q33, the Q36, the Q38, the Q39, the Q41 and the Q42 are in the off state.

14. A power supply control system, characterized in that: The power supply control system includes an interface module, a power management unit PMU, a battery, a load system and a power supply system; wherein: The power supply system includes a charge pump system and an inductor switch module, wherein a first end of the inductor switch module is connected to a first end of the charge pump system, and a second end of the inductor switch module is connected to the battery; a second end of the charge pump system is connected to the interface module, a third end of the charge pump system is connected to one end of the PMU, and the other end of the PMU is connected to the load system; the inductor switch module includes a first switch module Q1 and a first inductor connected in parallel, a first end of the inductor switch module is the parallel Q1 and one end of the first inductor, and a second end of the inductor switch module is the parallel Q1 and the other end of the first inductor.

15. The power supply control system according to claim 14, characterized in that: When the battery is charged through the interface module, Q1 is in an on state, and the charge pump system steps down the input voltage of the interface module; when the battery supplies power to the PMU through the power supply system, Q1 is in an off state, and the power supply system steps up the battery voltage.

16. A power supply control method, characterized in that: The method is applied to a terminal device, which includes an interface module, a power management unit PMU, a battery, a load system and a power supply system; wherein: The power supply system includes a charge pump system and an inductor switch module, wherein a first end of the inductor switch module is connected to a first end of the charge pump system, and a second end of the inductor switch module is connected to the battery; a second end of the charge pump system is connected to the interface module, a third end of the charge pump system is connected to one end of the PMU, and the other end of the PMU is connected to the load system; the inductor switch module includes a first switch module Q1 and a first inductor connected in parallel, a first end of the inductor switch module is the parallel Q1 and one end of the first inductor, and a second end of the inductor switch module is the parallel Q1 and the other end of the first inductor; When the battery is charged through the interface module, the terminal device controls Q1 to be turned on, and controls the charge pump system to step down the input voltage of the interface module; when the battery supplies power to the PMU through the power supply system, the terminal device controls Q1 to be turned off, and controls the power supply system to step up the battery voltage.

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