Voltage conversion circuit, power management chip, system-on-chip and electronic equipment

Abstract

The invention relates to a voltage conversion circuit, a power management chip, a system-on-chip and electronic equipment. The voltage conversion circuit comprises at least one voltage conversion assembly, and the voltage conversion assembly comprises a first electric connection end; a second electrical connection terminal; the energy storage circuit comprises a first energy storage assembly and a second energy storage assembly which are electrically connected; the switching circuit is electrically connected with the first electric connection end, the second electric connection end, the first energy storage assembly and the second energy storage assembly, and the switching circuit has a first state and a second state; in the first state and the second state, a third relation exists between the voltage of the first electric connection end and the voltage of the second electric connection end. The switching circuit operates in different working states, and the first energy storage assembly and the second energy storage assembly can cooperate with each other, so that a third relationship exists between the voltage of the first electric connection end and the voltage of the second electric connection end, and the use of devices can be reduced under the condition that the voltage conversion effect is achieved; therefore, the size and the weight of the voltage conversion circuit are reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of voltage conversion, and in particular, to a voltage conversion circuit, a power management chip, a system-on-chip, and an electronic device. Background Art

[0002] A voltage conversion circuit is a circuit that converts the voltage of an input power supply into the voltages required by the various loads of a device, which can ensure the efficiency and stability of power transmission. Voltage conversion circuits are widely used in various devices such as smartphones, tablets, industrial controllers, servers, vehicle-mounted systems, medical instruments, and Internet of Things devices. Summary of the Invention

[0003] To overcome the problems existing in the related art, the present disclosure provides a voltage conversion circuit, a power management chip, a system-on-chip, and an electronic device.

[0004] According to a first aspect of an embodiment of the present disclosure, a voltage conversion circuit is provided, including at least one voltage conversion component, and the voltage conversion component includes:

[0005] A first electrical connection end;

[0006] A second electrical connection end;

[0007] An energy storage circuit, the energy storage circuit including a first energy storage component and a second energy storage component that are electrically connected;

[0008] A switching circuit, the switching circuit being electrically connected to the first electrical connection end, the second electrical connection end, the first energy storage component, and the second energy storage component, and the switching circuit having a first state and a second state;

[0009] In the first state, there is a first relationship between the voltage of the first energy storage component and the voltages of the first electrical connection end and the second electrical connection end; in the first state and the second state, the second energy storage component causes there to be a second relationship between the voltage of the first energy storage component and the voltage of the first electrical connection end or the voltage of the second electrical connection end; the first relationship and the second relationship cause there to be a third relationship between the voltage of the first electrical connection end and the voltage of the second electrical connection end.

[0010] In some exemplary embodiments of the present disclosure, the switching circuit includes:

[0011] A first switching component, the first switching component being electrically connected to the first energy storage component, the second energy storage component, the first electrical connection end, and the second electrical connection end;

[0012] A second switch assembly, which is electrically connected to the first switch assembly, the first energy storage assembly, the second energy storage assembly, and the second electrical connection terminal.

[0013] In some exemplary embodiments of the present disclosure, the first switch assembly and the second switch assembly conduct alternately; in the first state, the first switch assembly conducts and the second switch assembly is off; in the second state, the second switch assembly conducts and the first switch assembly is off.

[0014] In some exemplary embodiments of the present disclosure, the first switch assembly includes a first switch unit, a second switch unit, a third switch unit, a fourth switch unit, and a fifth switch unit, and the second switch assembly includes a sixth switch unit, a seventh switch unit, an eighth switch unit, and a ninth switch unit;

[0015] The first end of the first switch unit is electrically connected to the first electrical connection terminal, and the second end of the first switch unit is electrically connected to both the first end of the sixth switch unit and the first end of the first energy storage assembly;

[0016] The first end of the second switch unit is electrically connected to both the second end of the sixth switch unit and the first end of the second energy storage assembly, and the second end of the second switch unit is electrically connected to both the first end of the seventh switch unit and the second end of the second energy storage assembly;

[0017] The first end of the third switch unit is electrically connected to both the second end of the seventh switch unit and the third end of the second energy storage assembly, and the second end of the third switch unit is electrically connected to the first end of the fourth switch unit, the first end of the eighth switch unit, and the second electrical connection terminal;

[0018] The second end of the fourth switch unit is electrically connected to the first end of the ninth switch unit, the second end of the first energy storage assembly, and the fourth end of the second energy storage assembly;

[0019] The first end of the fifth switch unit is electrically connected to both the second end of the eighth switch unit and the fifth end of the second energy storage assembly, and the second end of the fifth switch unit is electrically connected to the second end of the ninth switch unit and the ground terminal.

[0020] In some exemplary embodiments of the present disclosure, the first energy storage assembly includes a first energy storage unit, and the second energy storage assembly includes a second energy storage unit, a third energy storage unit, and a fourth energy storage unit;

[0021] The first end of the first energy storage unit is electrically connected to both the second end of the first switch unit and the first end of the sixth switch unit. The second end of the first energy storage unit is electrically connected to both the first end of the second energy storage unit, the second end of the fourth switch unit, and the first end of the ninth switch unit;

[0022] The second end of the second energy storage unit is electrically connected to both the second end of the second switch unit and the first end of the seventh switch unit;

[0023] The first end of the third energy storage unit is electrically connected to both the first end of the second switch unit and the second end of the sixth switch unit. The second end of the third energy storage unit is electrically connected to both the first end of the fourth energy storage unit, the first end of the fifth switch unit, and the second end of the eighth switch unit;

[0024] The second end of the fourth energy storage unit is electrically connected to both the first end of the third switch unit and the second end of the seventh switch unit.

[0025] In some exemplary embodiments of the present disclosure, the switching circuit further includes:

[0026] A third switch component, which is electrically connected to the first switch component, the second switch component, the first electrical connection end, and the second electrical connection end;

[0027] A fourth switch component, which is electrically connected to the third switch component;

[0028] The energy storage circuit further includes:

[0029] A third energy storage component, which is electrically connected to the first switch component, the second switch component, the third switch component, the fourth switch component, and the second energy storage component;

[0030] A fourth energy storage component, which is electrically connected to the first switch component, the second switch component, the third switch component, the fourth switch component, the first energy storage component, the second energy storage component, and the third energy storage component.

[0031] In some exemplary embodiments of the present disclosure, the third switch component and the fourth switch component conduct alternately; in the first state, the fourth switch component conducts and the third switch component disconnects; in the second state, the third switch component conducts and the fourth switch component disconnects.

[0032] In some exemplary embodiments of the present disclosure, the third switch assembly includes a tenth switch unit, an eleventh switch unit, and a twelfth switch unit, and the fourth switch assembly includes a thirteenth switch unit and a fourteenth switch unit;

[0033] A first end of the tenth switch unit is electrically connected to a first end of the first switch unit and the first electrical connection end, and a second end of the tenth switch unit is electrically connected to a first end of the thirteenth switch unit and a first end of the third energy storage component;

[0034] A first end of the eleventh switch unit is electrically connected to a second end of the thirteenth switch unit and a first end of the fourth energy storage component, and a second end of the eleventh switch unit is electrically connected to a first end of the fourteenth switch unit and a second end of the fourth energy storage component;

[0035] A first end of the twelfth switch unit is electrically connected to a second end of the fourteenth switch unit and a third end of the fourth energy storage component, and a second end of the twelfth switch unit is electrically connected to a second end of the third switch unit, a first end of the fourth switch unit, a first end of the eighth switch unit, and the second electrical connection end.

[0036] In some exemplary embodiments of the present disclosure, each of the first switch unit, the second switch unit, the third switch unit, the fourth switch unit, the fifth switch unit, the sixth switch unit, the seventh switch unit, the eighth switch unit, the ninth switch unit, the tenth switch unit, the eleventh switch unit, the twelfth switch unit, the thirteenth switch unit, and the fourteenth switch unit includes:

[0037] A first switch device; or,

[0038] Multiple series-connected second switch devices; or,

[0039] Multiple parallel-connected third switch devices.

[0040] In some exemplary embodiments of the present disclosure, the third energy storage component includes a fifth energy storage unit, and the fourth energy storage component includes a sixth energy storage unit, a seventh energy storage unit, and an eighth energy storage unit;

[0041] A first end of the fifth energy storage unit is electrically connected to a second end of the tenth switch unit and a first end of the thirteenth switch unit, and a second end of the fifth energy storage unit is electrically connected to a second end of the third energy storage unit, a first end of the fourth energy storage unit, a first end of the sixth energy storage unit, a first end of the fifth switch unit, and a second end of the eighth switch unit;

[0042] The second end of the sixth energy storage unit is electrically connected to both the second end of the eleventh switching unit and the first end of the fourteenth switching unit;

[0043] The first end of the seventh energy storage unit is electrically connected to both the first end of the eleventh switching unit and the second end of the thirteenth switching unit. The second end of the seventh energy storage unit is electrically connected to the second end of the first energy storage unit, the first end of the second energy storage unit, the first end of the eighth energy storage unit, the second end of the fourth switching unit, and the first end of the ninth switching unit;

[0044] The second end of the eighth energy storage unit is electrically connected to both the first end of the twelfth switching unit and the second end of the fourteenth switching unit.

[0045] In some exemplary embodiments of the present disclosure, each of the first energy storage unit, the second energy storage unit, the third energy storage unit, the fourth energy storage unit, the fifth energy storage unit, the sixth energy storage unit, the seventh energy storage unit, and the eighth energy storage unit includes:

[0046] A first capacitor; or,

[0047] Multiple second capacitors connected in series; or,

[0048] Multiple third capacitors connected in parallel.

[0049] In some exemplary embodiments of the present disclosure, each of the energy storage units further includes:

[0050] A first inductor, the first inductor being connected in series with the first capacitor; or,

[0051] Multiple second inductors, each second inductor being connected in series with one of the second capacitors; or,

[0052] Multiple third inductors, each third inductor being connected in series with one of the third capacitors.

[0053] In some exemplary embodiments of the present disclosure, the voltage conversion component further includes:

[0054] A voltage stabilizing capacitor, the first end of the voltage stabilizing capacitor being electrically connected to the first electrical connection end or the second electrical connection end, and the second end of the voltage stabilizing capacitor being electrically connected to the ground end.

[0055] In some exemplary embodiments of the present disclosure, the voltage of the first electrical connection end is five times the voltage of the second electrical connection end.

[0056] In some exemplary embodiments of the present disclosure, the voltage conversion circuit includes a plurality of the voltage conversion components, and the plurality of voltage conversion components are connected in series; alternatively, the plurality of voltage conversion components are connected in parallel; alternatively, after some of the voltage conversion components are connected in parallel, they are connected in series with another part of the voltage conversion components.

[0057] According to a second aspect of the embodiments of the present disclosure, there is provided a power management chip, including any one of the voltage conversion circuits as described in the first aspect of the present disclosure.

[0058] According to a third aspect of the embodiments of the present disclosure, there is provided a system-on-chip, including the power management chip as described in the second aspect of the present disclosure.

[0059] According to a fourth aspect of the embodiments of the present disclosure, there is provided an electronic device, including the power management chip as described in the second aspect of the present disclosure or the system-on-chip as described in the third aspect of the present disclosure.

[0060] The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:

[0061] By operating the switch circuit in different working states, the first energy storage component and the second energy storage component can cooperate with each other so that there is a third relationship between the voltage of the first electrical connection end and the voltage of the second electrical connection end. In the case of achieving the voltage conversion effect, the use of devices can be reduced, thereby reducing the volume and weight of the voltage conversion circuit.

[0062] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure.

[0064] Figure 1 FIG. is a schematic structural diagram of a voltage conversion circuit shown according to an exemplary embodiment.

[0065] Figure 2 FIG. is a schematic structural diagram of a voltage conversion circuit shown according to another exemplary embodiment.

[0066] Figure 3 FIG. is a schematic structural diagram of a voltage conversion circuit shown according to another exemplary embodiment.

[0067] Figure 4 FIG. is a schematic structural diagram of a voltage conversion circuit shown according to another exemplary embodiment.

[0068] Figure 5It is a schematic structural diagram of a first circuit formed by a voltage conversion circuit in a first state of a switching circuit according to an exemplary embodiment.

[0069] Figure 6 It is a schematic structural diagram of a second circuit formed by a voltage conversion circuit in a second state of a switching circuit according to an exemplary embodiment.

[0070] Figure 7 It is a schematic structural diagram of a voltage conversion circuit according to another exemplary embodiment.

[0071] Figure 8 It is a schematic structural diagram of a voltage conversion circuit according to another exemplary embodiment.

[0072] Figure 9 It is a schematic structural diagram of a voltage conversion circuit according to another exemplary embodiment.

[0073] Figure 10 It is a schematic structural diagram of a third circuit formed by a voltage conversion circuit in a first state of a switching circuit according to an exemplary embodiment.

[0074] Figure 11 It is a schematic structural diagram of a fourth circuit formed by a voltage conversion circuit in a second state of a switching circuit according to an exemplary embodiment.

[0075] In the figure:

[0076] 1 - Voltage conversion component; 11 - First electrical connection terminal; 12 - Second electrical connection terminal; 13 - Energy storage circuit; 131 - First energy storage component; 132 - Second energy storage component; 133 - Third energy storage component; 134 - Fourth energy storage component; 14 - Switching circuit; 141 - First switch component; 142 - Second switch component; 143 - Third switch component; 144 - Fourth switch component; Q1 - First switch unit; Q2 - Second switch unit; Q3 - Third switch unit; Q4 - Fourth switch unit; Q5 - Fifth switch unit; Q6 - Sixth switch unit; Q7 - Seventh switch unit; Q8 - Eighth switch unit; Q9 - Ninth switch unit; Q10 - Tenth switch unit; Q11 - Eleventh switch unit; Q12 - Twelfth switch unit; Q13 - Thirteenth switch unit; Q14 - Fourteenth switch unit; ES1 - First energy storage unit; ES2 - Second energy storage unit; ES3 - Third energy storage unit; ES4 - Fourth energy storage unit; ES5 - Fifth energy storage unit; ES6 - Sixth energy storage unit; ES7 - Seventh energy storage unit; ES8 - Eighth energy storage unit. Detailed implementation mode

[0077] Exemplary embodiments will be described in detail herein, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. On the contrary, they are merely examples of devices consistent with some aspects of the present disclosure as detailed in the appended claims.

[0078] A voltage conversion circuit is a circuit that converts the voltage of an input power supply into the voltages required by the various loads of a device, which can ensure the efficiency and stability of power transmission. Voltage conversion circuits are widely used in various devices such as smartphones, tablets, industrial controllers, servers, vehicle-mounted systems, medical instruments, and Internet of Things devices.

[0079] In the related art, a voltage conversion circuit is provided, and the voltage conversion circuit realizes voltage conversion in one state of its switching circuit. Since the number of switching devices required for the voltage conversion circuit is relatively large, the voltage conversion circuit has problems of large volume and high weight.

[0080] To solve the above problems, the present disclosure provides a voltage conversion circuit, which realizes voltage conversion by switching the switching circuit of the voltage conversion circuit between two different states, and can reduce the number of switching devices of the switching circuit while achieving the voltage conversion effect, thereby reducing the volume and weight of the voltage conversion circuit.

[0081] In some exemplary embodiments, as Figure 1 shown, this embodiment shows a voltage conversion circuit, which includes at least one voltage conversion component 1. In some examples, the voltage conversion circuit of the present disclosure includes one voltage conversion component 1. In other examples, the voltage conversion circuit of the present disclosure includes a plurality of voltage conversion components 1, and the plurality of voltage conversion components 1 can be connected in series, the plurality of voltage conversion components 1 can also be connected in parallel, or some of the voltage conversion components 1 can be connected in parallel and then connected in series with another part of the voltage conversion components 1.

[0082] The voltage conversion component 1 includes a first electrical connection end 11 and a second electrical connection end 12. The first electrical connection end 11 can be the power input end of the voltage conversion component 1 or the power output end of the voltage conversion component 1. The second electrical connection end 12 can be the power input end of the voltage conversion component 1 or the power output end of the voltage conversion component 1. In some examples, the first electrical connection end 11 is the power input end of the voltage conversion component 1, and the second electrical connection end 12 is the power output end of the voltage conversion component 1. In other examples, the first electrical connection end 11 is the power output end of the voltage conversion component 1, and the second electrical connection end 12 is the power input end of the voltage conversion component 1.

[0083] The voltage conversion component 1 further includes an energy storage circuit 13. The energy storage circuit 13 includes a first energy storage component 131 and a second energy storage component 132 that are electrically connected. An energy storage circuit refers to a circuit structure that temporarily stores electrical energy and releases it when needed. Its main function is to balance the time difference between energy supply and demand. The first energy storage component 131 and the second energy storage component 132 of the energy storage circuit 13 can include energy storage devices such as capacitors and inductors. The types of energy storage devices included in the first energy storage component 131 and the second energy storage component 132 can be the same or different. The electrical energy at the power input terminal can be charged into the energy storage devices of the first energy storage component 131 and the second energy storage component 132, and the electrical energy in the energy storage devices can be released to the load through the power output terminal.

[0084] The voltage conversion component 1 further includes a switching circuit 14. The switching circuit 14 can include switching devices. A switching device is a device that has two states: conduction and disconnection, and the on-off control of current and voltage can be achieved by controlling the conduction and disconnection of the switching device. The switching circuit 14 can include switching devices such as electronic switches and semiconductor switches.

[0085] The switching circuit 14 is electrically connected to the first electrical connection terminal 11, the second electrical connection terminal 12, the first energy storage component 131, and the second energy storage component 132, so that the switching circuit 14 can be used to control the charging and discharging of the first energy storage component 131 and the second energy storage component 132 between the first electrical connection terminal 11 and the second electrical connection terminal 12 to achieve the voltage conversion effect.

[0086] The switching circuit 14 has a first state and a second state. In the first state, there is a first relationship between the voltage of the first energy storage component 131 and the voltages of the first electrical connection terminal 11 and the second electrical connection terminal 12. In the first state and the second state, the second energy storage component 132 causes there to be a second relationship between the voltage of the first energy storage component 131 and the voltage of the first electrical connection terminal 11 or the second electrical connection terminal 12. The first relationship and the second relationship cause there to be a third relationship between the voltage of the first electrical connection terminal 11 and the voltage of the second electrical connection terminal 12.

[0087] In some examples, the first electrical connection terminal 11 is a power input terminal, and the second electrical connection terminal 12 is a power output terminal. By controlling the conduction and disconnection of different switching devices in the switching circuit 14, the switching circuit 14 is switched between a first state and a second state, so that the first electrical connection terminal 11 charges the first energy storage component 131 and the second energy storage component 132, and the first energy storage component 131 and the second energy storage component 132 discharge to the second electrical connection terminal 12. In the first state of the switching circuit 14, there is a first relationship between the voltage of the first energy storage component 131 and the voltages of the first electrical connection terminal 11 and the second electrical connection terminal 12. In the first state and the second state of the switching circuit 14, the second energy storage component 132 makes there be a second relationship between the voltage of the first energy storage component 131 and the voltage of the first electrical connection terminal 11 or the second electrical connection terminal 12, so that there is a third relationship between the voltage output by the second electrical connection terminal 12 and the voltage of the first electrical connection terminal 11.

[0088] In other examples, the first electrical connection terminal 11 is a power output terminal, and the second electrical connection terminal 12 is a power input terminal. By controlling the on and off of different switching devices in the switching circuit 14, the switching circuit 14 is switched between a first state and a second state, so that the second electrical connection terminal 12 charges the first energy storage component 131 and the second energy storage component 132, and the first energy storage component 131 and the second energy storage component 132 discharge to the first electrical connection terminal 11. In the first state of the switching circuit 14, there is a first relationship between the voltage of the first energy storage component 131 and the voltages of the first electrical connection terminal 11 and the second electrical connection terminal 12. In the first state and the second state of the switching circuit 14, the second energy storage component 132 makes there be a second relationship between the voltage of the first energy storage component 131 and the voltage of the first electrical connection terminal 11 or the second electrical connection terminal 12, so that there is a third relationship between the voltage output by the first electrical connection terminal 11 and the voltage of the second electrical connection terminal 12.

[0089] The first state may be that the first part of the switching devices in the switching circuit 14 are conducting and the second part of the switching devices are non-conducting. The second state may be that the first part of the switching devices in the switching circuit 14 are non-conducting and the second part of the switching devices are conducting. The first state and the second state may also be other states of the switching circuit 14, which are not limited herein. Any feasible control method can be used to control the switching circuit 14 to enter the first state or the second state, and the present disclosure does not limit this.

[0090] The first relationship may be that the voltage of the first energy storage component 131 is the voltage of the first electrical connection terminal 11 minus the voltage of the second electrical connection terminal 12. The first relationship may also be other relationships between the voltage of the first energy storage component 131 and the voltages of the first electrical connection terminal 11 and the second electrical connection terminal 12, which are not limited herein.

[0091] The second relationship can be a multiple relationship between the voltage of the first energy storage component 131 and the voltage of the first electrical connection terminal 11, or a multiple relationship between the voltage of the first energy storage component 131 and the voltage of the second electrical connection terminal 12. The second relationship can also be other relationships between the voltage of the first energy storage component 131 and the voltage of the first electrical connection terminal 11 or the second electrical connection terminal 12, which are not limited herein.

[0092] The third relationship can be a multiple relationship between the voltage of the first electrical connection terminal 11 and the voltage of the second electrical connection terminal 12. For example, the voltage of the first electrical connection terminal 11 is five times, or four times, or three times, etc. the voltage of the second electrical connection terminal 12. The third relationship can also be other relationships between the voltage of the first electrical connection terminal 11 and the voltage of the second electrical connection terminal 12, which are not limited herein.

[0093] In this embodiment, by operating the switch circuit in different working states, the first energy storage component and the second energy storage component can cooperate with each other to make there be a third relationship between the voltage of the first electrical connection terminal and the voltage of the second electrical connection terminal. In the case of achieving the voltage conversion effect, the use of devices can be reduced, thereby reducing the volume and weight of the voltage conversion circuit.

[0094] In some possible embodiments, as Figure 2 shown, the switch circuit 14 in this embodiment includes a first switch component 141 and a second switch component 142. Both the first switch component 141 and the second switch component 142 can include switch devices such as electronic switches and semiconductor switches. The types of switch devices included in the first switch component 141 and the second switch component 142 can be the same or different.

[0095] The first state of the switch circuit 14 can be that the first switch component 141 is turned on and the second switch component 142 is turned off. The second state of the switch circuit 14 can be that the first switch component 141 is turned off and the second switch component 142 is turned on. Any feasible control method can be used to control the turning on and off of the first switch component 141 and the second switch component 142, which is not limited in this disclosure.

[0096] The first switch component 141 is electrically connected to the first energy storage component 131, the second energy storage component 132, the first electrical connection terminal 11, and the second electrical connection terminal 12. The second switch component 142 is electrically connected to the first switch component 141, the first energy storage component 131, the second energy storage component 132, and the second electrical connection terminal 12. Thus, the first switch component 141 and the second switch component 142 can be used to control the charging and discharging of the first energy storage component 131 and the second energy storage component 132 between the first electrical connection terminal 11 and the second electrical connection terminal 12 to achieve the voltage conversion effect.

[0097] In this embodiment, the first switch component and the second switch component of the switch circuit can control the first energy storage component and the second energy storage component to charge and discharge between the first electrical connection end and the second electrical connection end, achieving the required voltage conversion effect.

[0098] In some possible embodiments, the first switch component 141 and the second switch component 142 are alternately turned on. In the first state, the first switch component 141 is turned on and the second switch component 142 is turned off. In the second state, the second switch component 142 is turned on and the first switch component 141 is turned off.

[0099] In this embodiment, by controlling the first switch component and the second switch component to be alternately turned on, the switch circuit can enter the first state and the second state respectively, so that there is a third relationship between the voltage at the first electrical connection end and the voltage at the second electrical connection end, achieving the required voltage conversion effect.

[0100] In some possible embodiments, as Figure 3 shown, the first switch component 141 in this embodiment includes a first switch unit Q1, a second switch unit Q2, a third switch unit Q3, a fourth switch unit Q4, and a fifth switch unit Q5. The second switch component 142 includes a sixth switch unit Q6, a seventh switch unit Q7, an eighth switch unit Q8, and a ninth switch unit Q9.

[0101] The first switch unit Q1, the second switch unit Q2, the third switch unit Q3, the fourth switch unit Q4, the fifth switch unit Q5, the sixth switch unit Q6, the seventh switch unit Q7, the eighth switch unit Q8, and the ninth switch unit Q9 can all include switch devices such as electronic switches and semiconductor switches. The switch devices included in the first switch unit Q1, the second switch unit Q2, the third switch unit Q3, the fourth switch unit Q4, the fifth switch unit Q5, the sixth switch unit Q6, the seventh switch unit Q7, the eighth switch unit Q8, and the ninth switch unit Q9 can all be N-type switch devices, or can all be P-type switch devices, or can be partially N-type switch devices and the other part be P-type switch devices.

[0102] The first state of the switching circuit 14 is that the first switching unit Q1, the second switching unit Q2, the third switching unit Q3, the fourth switching unit Q4, and the fifth switching unit Q5 are conducting, and the sixth switching unit Q6, the seventh switching unit Q7, the eighth switching unit Q8, and the ninth switching unit Q9 are off. The second state of the switching circuit 14 is that the first switching unit Q1, the second switching unit Q2, the third switching unit Q3, the fourth switching unit Q4, and the fifth switching unit Q5 are off, and the sixth switching unit Q6, the seventh switching unit Q7, the eighth switching unit Q8, and the ninth switching unit Q9 are conducting. Any feasible control method can be used to control the conduction and disconnection of the first switching unit Q1, the second switching unit Q2, the third switching unit Q3, the fourth switching unit Q4, the fifth switching unit Q5, the sixth switching unit Q6, the seventh switching unit Q7, the eighth switching unit Q8, and the ninth switching unit Q9, and the present disclosure does not limit this.

[0103] The first end of the first switching unit Q1 is electrically connected to the first electrical connection end 11, and the second end of the first switching unit Q1 is electrically connected to both the first end of the sixth switching unit Q6 and the first end of the first energy storage component 131. The first end of the second switching unit Q2 is electrically connected to both the second end of the sixth switching unit Q6 and the first end of the second energy storage component 132, and the second end of the second switching unit Q2 is electrically connected to both the first end of the seventh switching unit Q7 and the second end of the second energy storage component 132. The first end of the third switching unit Q3 is electrically connected to both the second end of the seventh switching unit Q7 and the third end of the second energy storage component 132, and the second end of the third switching unit Q3 is electrically connected to the first end of the fourth switching unit Q4, the first end of the eighth switching unit Q8, and the second electrical connection end 12. The second end of the fourth switching unit Q4 is electrically connected to the first end of the ninth switching unit Q9, the second end of the first energy storage component 131, and the fourth end of the second energy storage component 132. The first end of the fifth switching unit Q5 is electrically connected to both the second end of the eighth switching unit Q8 and the fifth end of the second energy storage component 132, and the second end of the fifth switching unit Q5 is electrically connected to the second end of the ninth switching unit Q9 and the ground terminal. Thus, the first switching unit Q1, the second switching unit Q2, the third switching unit Q3, the fourth switching unit Q4, the fifth switching unit Q5, the sixth switching unit Q6, the seventh switching unit Q7, the eighth switching unit Q8, and the ninth switching unit Q9 can be used to control the charging and discharging of the first energy storage component 131 and the second energy storage component 132 between the first electrical connection end 11 and the second electrical connection end 12 to achieve a voltage conversion effect.

[0104] In this embodiment, by controlling the alternating conduction of the first switch unit, the second switch unit, the third switch unit, the fourth switch unit, the fifth switch unit and the sixth switch unit, the seventh switch unit, the eighth switch unit and the ninth switch unit, the switching circuit can enter the first state or the second state, so as to achieve the required voltage conversion effect.

[0105] In some possible embodiments, as Figure 4 shown, the first energy storage component 131 in this embodiment includes a first energy storage unit ES1. The second energy storage component 132 includes a second energy storage unit ES2, a third energy storage unit ES3 and a fourth energy storage unit ES4. The first energy storage unit ES1, the second energy storage unit ES2, the third energy storage unit ES3 and the fourth energy storage unit ES4 can all include energy storage devices such as capacitors and inductors. The types of energy storage devices included in the first energy storage unit ES1, the second energy storage unit ES2, the third energy storage unit ES3 and the fourth energy storage unit ES4 can be the same or different.

[0106] The first end of the first energy storage unit ES1 is electrically connected to both the second end of the first switch unit Q1 and the first end of the sixth switch unit Q6. The second end of the first energy storage unit ES1 is electrically connected to both the first end of the second energy storage unit ES2, the second end of the fourth switch unit Q4 and the first end of the ninth switch unit Q9. The second end of the second energy storage unit ES2 is electrically connected to both the second end of the second switch unit Q2 and the first end of the seventh switch unit Q7. The first end of the third energy storage unit ES3 is electrically connected to both the first end of the second switch unit Q2 and the second end of the sixth switch unit Q6. The second end of the third energy storage unit ES3 is electrically connected to both the first end of the fourth energy storage unit ES4, the first end of the fifth switch unit Q5 and the second end of the eighth switch unit Q8. The second end of the fourth energy storage unit ES4 is electrically connected to both the first end of the third switch unit Q3 and the second end of the seventh switch unit Q7.

[0107] Figure 5 is Figure 4 the first circuit 2 formed by the voltage conversion circuit in the first state of the switching circuit 14, Figure 6 is Figure 4 the second circuit 3 formed by the voltage conversion circuit in the second state of the switching circuit 14. It can be Figure 5 concluded that in the first state of the switching circuit 14, the voltage of the first energy storage unit ES1 is the voltage of the first electrical connection end 11 minus the voltage of the second electrical connection end 12. From Figure 5 and Figure 6It can be obtained that in the first state and the second state of the switching circuit 14, the second energy storage unit ES2, the third energy storage unit ES3, and the fourth energy storage unit ES4 make the voltage of the first energy storage unit ES1 four times the voltage of the second electrical connection end 12, or the voltage of the first energy storage unit ES1 is four-fifths of the voltage of the first electrical connection end 11, so that the voltage of the first electrical connection end 11 is five times the voltage of the second electrical connection end 12.

[0108] It can be understood that when changing the combination of the first switching unit Q1, the second switching unit Q2, the third switching unit Q3, the fourth switching unit Q4, the fifth switching unit Q5, the sixth switching unit Q6, the seventh switching unit Q7, the eighth switching unit Q8, and the ninth switching unit Q9, as well as the conduction and disconnection timings, the voltage of the first electrical connection end 11 may not be five times the voltage of the second electrical connection end 12, and there may be other relationships between the voltage of the first electrical connection end 11 and the voltage of the second electrical connection end 12 to obtain different voltage conversion effects.

[0109] In this embodiment, the first energy storage unit, the second energy storage unit, the third energy storage unit, and the fourth energy storage unit can make the voltage of the first electrical connection end five times the voltage of the second electrical connection end in the first state and the second state of the switching circuit. By alternately conducting nine switching units, a five-fold voltage conversion effect can be achieved, which can reduce the number of switching devices in the switching circuit while achieving the required voltage conversion effect, thereby reducing the switching loss and driving loss of the switching devices in the switching circuit, improving the conversion efficiency of the voltage conversion circuit, and reducing the volume and weight of the voltage conversion circuit.

[0110] In some possible embodiments, as Figure 7 shown, the switching circuit 14 in this embodiment further includes a third switching component 143 and a fourth switching component 144. Both the third switching component 143 and the fourth switching component 144 may include switching devices such as electronic switches and semiconductor switches. The types of switching devices included in the first switching component 141, the second switching component 142, the third switching component 143, and the fourth switching component 144 may be the same or different. Any feasible control method can be used to control the conduction and disconnection of the third switching component 143 and the fourth switching component 144, and the present disclosure does not limit this.

[0111] The energy storage circuit 13 further includes a third energy storage component 133 and a fourth energy storage component 134. Both the third energy storage component 133 and the fourth energy storage component 134 may include energy storage devices such as capacitors and inductors. The types of energy storage devices included in the first energy storage component 131, the second energy storage component 132, the third energy storage component 133, and the fourth energy storage component 134 may be the same or different.

[0112] The third switch component 143 is electrically connected to the first switch component 141, the second switch component 142, the first electrical connection terminal 11, and the second electrical connection terminal 12. The fourth switch component 144 is electrically connected to the third switch component 143. The third energy storage component 133 is electrically connected to the first switch component 141, the second switch component 142, the third switch component 143, the fourth switch component 144, and the second energy storage component 132. The fourth energy storage component 134 is electrically connected to the first switch component 141, the second switch component 142, the third switch component 143, the fourth switch component 144, the first energy storage component 131, the second energy storage component 132, and the third energy storage component 133. Thus, the first switch component 141, the second switch component 142, the third switch component 143, and the fourth switch component 144 can be used to control the charging and discharging of the third energy storage component 133 and the fourth energy storage component 134 between the first electrical connection terminal 11 and the second electrical connection terminal 12, achieving a voltage conversion effect.

[0113] In some examples, the third switch component 143 and the second switch component 142 are turned on and off simultaneously, and the fourth switch component 144 and the first switch component 141 are turned on and off simultaneously. That is, in the first state of the switch circuit 14, the first switch component 141 and the fourth switch component 144 are turned on, and the second switch component 142 and the third switch component 143 are turned off. In the second state of the switch circuit 14, the first switch component 141 and the fourth switch component 144 are turned off, and the second switch component 142 and the third switch component 143 are turned on. In the second state of the switch circuit 14, there may be a first relationship between the voltage of the third energy storage component 133 and the voltages of the first electrical connection terminal 11 and the second electrical connection terminal 12. In the first state and the second state of the switch circuit 14, the fourth energy storage component 134 enables there to be a second relationship between the voltage of the third energy storage component 133 and the voltage of the first electrical connection terminal 11 or the second electrical connection terminal 12. The first relationship and the second relationship enable there to be a third relationship between the voltage of the first electrical connection terminal 11 and the voltage of the second electrical connection terminal 12.

[0114] In this embodiment, the voltage conversion component further includes a third switch component, a fourth switch component, a third energy storage component, and a fourth energy storage component. The third switch component and the fourth switch component, in cooperation with the first switch component and the second switch component, can cause the third energy storage component and the fourth energy storage component to charge and discharge between the first electrical connection terminal and the second electrical connection terminal, thereby also achieving the required voltage conversion effect.

[0115] In some possible embodiments, the third switch component 143 and the fourth switch component 144 are alternately turned on. In the first state, the fourth switch component 144 is turned on, and the third switch component 143 is turned off. In the second state, the third switch component 143 is turned on, and the fourth switch component 144 is turned off.

[0116] In this embodiment, by controlling the first switch component, the fourth switch component, and the second switch component and the third switch component to conduct alternately, the switching circuit can enter the first state and the second state respectively, so that there is a third relationship between the voltage of the first electrical connection end and the voltage of the second electrical connection end, achieving the required voltage conversion effect.

[0117] In some possible embodiments, as Figure 8 shown, the third switch component 143 in this embodiment includes a tenth switch unit Q10, an eleventh switch unit Q11, and a twelfth switch unit Q12. The fourth switch component 144 includes a thirteenth switch unit Q13 and a fourteenth switch unit Q14.

[0118] The tenth switch unit Q10, the eleventh switch unit Q11, the twelfth switch unit Q12, the thirteenth switch unit Q13, and the fourteenth switch unit Q14 can all include switching devices such as electronic switches and semiconductor switches. The switching devices included in the first switch unit Q1, the second switch unit Q2, the third switch unit Q3, the fourth switch unit Q4, the fifth switch unit Q5, the sixth switch unit Q6, the seventh switch unit Q7, the eighth switch unit Q8, the ninth switch unit Q9, the tenth switch unit Q10, the eleventh switch unit Q11, the twelfth switch unit Q12, the thirteenth switch unit Q13, and the fourteenth switch unit Q14 can all be N-type switching devices, or can all be P-type switching devices, or can be partially N-type switching devices and the other part be P-type switching devices.

[0119] Any feasible control method can be used to control the conduction and disconnection of the tenth switch unit Q10, the eleventh switch unit Q11, the twelfth switch unit Q12, the thirteenth switch unit Q13, and the fourteenth switch unit Q14, and the present disclosure does not limit this.

[0120] The first end of the tenth switching unit Q10 is electrically connected to both the first end of the first switching unit Q1 and the first electrical connection terminal 11. The second end of the tenth switching unit Q10 is electrically connected to both the first end of the thirteenth switching unit Q13 and the first end of the third energy storage component 133. The first end of the eleventh switching unit Q11 is electrically connected to both the second end of the thirteenth switching unit Q13 and the first end of the fourth energy storage component 134. The second end of the eleventh switching unit Q11 is electrically connected to both the first end of the fourteenth switching unit Q14 and the second end of the fourth energy storage component 134. The first end of the twelfth switching unit Q12 is electrically connected to both the second end of the fourteenth switching unit Q14 and the third end of the fourth energy storage component 134. The second end of the twelfth switching unit Q12 is electrically connected to the second end of the third switching unit Q3, the first end of the fourth switching unit Q4, the first end of the eighth switching unit Q8, and the second electrical connection terminal 12. The tenth switching unit Q10, the eleventh switching unit Q11, the twelfth switching unit Q12, the thirteenth switching unit Q13, and the fourteenth switching unit Q14 can be used in cooperation with the fourth switching unit Q4, the fifth switching unit Q5, the eighth switching unit Q8, and the ninth switching unit Q9 to control the charging and discharging of the third energy storage component 133 and the fourth energy storage component 134 between the first electrical connection terminal 11 and the second electrical connection terminal 12, achieving a voltage conversion effect.

[0121] In this embodiment, by using the tenth switching unit, the eleventh switching unit, the twelfth switching unit, the thirteenth switching unit, and the fourteenth switching unit in cooperation with the fourth switching unit, the fifth switching unit, the eighth switching unit, and the ninth switching unit, the charging and discharging of the third energy storage component and the fourth energy storage component between the first electrical connection terminal and the second electrical connection terminal can be controlled, achieving a voltage conversion effect.

[0122] In some possible embodiments, each of the switching units of the first switching unit Q1, the second switching unit Q2, the third switching unit Q3, the fourth switching unit Q4, the fifth switching unit Q5, the sixth switching unit Q6, the seventh switching unit Q7, the eighth switching unit Q8, the ninth switching unit Q9, the tenth switching unit Q10, the eleventh switching unit Q11, the twelfth switching unit Q12, the thirteenth switching unit Q13, and the fourteenth switching unit Q14 includes a first switching device, or multiple second switching devices connected in series, or multiple third switching devices connected in parallel.

[0123] In some examples, each switching unit includes a first switching device. The first end of the first switching device is the first end of the corresponding switching unit, and the second end of the first switching device is the second end of the corresponding switching unit. The small number of first switching devices can reduce the volume and weight of the switching unit.

[0124] In some other examples, each switching unit includes a plurality of second switching devices connected in series. The first end of the first second switching device in the plurality of second switching devices connected in series is the first end of the corresponding switching unit, and the second end of the last second switching device connected in series is the second end of the corresponding switching unit. The plurality of second switching devices connected in series can divide the voltage among themselves, which can improve the voltage withstand capacity of the entire switching unit.

[0125] In some other examples, each switching unit includes a plurality of third switching devices connected in parallel. The first ends of the plurality of third switching devices are electrically connected to form the first end of the corresponding switching unit, and the second ends of the plurality of third switching devices are electrically connected to form the second end of the corresponding switching unit. The plurality of third switching devices are connected in parallel, and each switching device can share a part of the current, which can improve the current handling capacity of the entire switching unit. At the same time, in the case where a third switching device fails, the other third switching devices connected in parallel with it can still work normally, and the corresponding switching unit can be normally turned on or off, improving the reliability of the switching unit.

[0126] The first switching device, the second switching device, and the third switching device can all be switching devices such as electronic switches and semiconductor switches. The types of the plurality of second switching devices or the plurality of third switching devices in one switching unit can be the same or different.

[0127] Any feasible control method can be used to control the conduction or disconnection of the first switching device, or to control the simultaneous conduction or disconnection of the plurality of second switching devices connected in series, or to control the simultaneous conduction or disconnection of the plurality of third switching devices connected in parallel. The present disclosure does not limit the specific control method.

[0128] In this embodiment, it can be selected that each switching unit includes a first switching device, or a plurality of second switching devices connected in series, or a plurality of third switching devices connected in parallel, so that the performance of the switching unit meets the requirements of the voltage conversion circuit, improving the adaptability of the switching unit.

[0129] In some possible embodiments, as Figure 9 shown, the third energy storage component 133 in this embodiment includes a fifth energy storage unit ES5. The fourth energy storage component 134 includes a sixth energy storage unit ES6, a seventh energy storage unit ES7, and an eighth energy storage unit ES8. The fifth energy storage unit ES5, the sixth energy storage unit ES6, the seventh energy storage unit ES7, and the eighth energy storage unit ES8 can all include energy storage devices such as capacitors and inductors. The types of energy storage devices included in the first energy storage unit ES1, the second energy storage unit ES2, the third energy storage unit ES3, the fourth energy storage unit ES4, the fifth energy storage unit ES5, the sixth energy storage unit ES6, the seventh energy storage unit ES7, and the eighth energy storage unit ES8 can be the same or different.

[0130] The first end of the fifth energy storage unit ES5 is electrically connected to the second end of the tenth switch unit Q10 and the first end of the thirteenth switch unit Q13. The second end of the fifth energy storage unit ES5 is electrically connected to the second end of the third energy storage unit ES3, the first end of the fourth energy storage unit ES4, the first end of the sixth energy storage unit ES6, the first end of the fifth switch unit Q5, and the second end of the eighth switch unit Q8. The second end of the sixth energy storage unit ES6 is electrically connected to the second end of the eleventh switch unit Q11 and the first end of the fourteenth switch unit Q14. The first end of the seventh energy storage unit ES7 is electrically connected to the first end of the eleventh switch unit Q11 and the second end of the thirteenth switch unit Q13. The second end of the seventh energy storage unit ES7 is electrically connected to the second end of the first energy storage unit ES1, the first end of the second energy storage unit ES2, the first end of the eighth energy storage unit ES8, the second end of the fourth switch unit Q4, and the first end of the ninth switch unit Q9. The second end of the eighth energy storage unit ES8 is electrically connected to the first end of the twelfth switch unit Q12 and the second end of the fourteenth switch unit Q14.

[0131] In this embodiment, in the first state of the switch circuit 14, the first switch unit Q1, the second switch unit Q2, the third switch unit Q3, the fourth switch unit Q4, the fifth switch unit Q5, the thirteenth switch unit Q13, and the fourteenth switch unit Q14 are turned on, and the sixth switch unit Q6, the seventh switch unit Q7, the eighth switch unit Q8, the ninth switch unit Q9, the tenth switch unit Q10, the eleventh switch unit Q11, and the twelfth switch unit Q12 are turned off. In the second state of the switch circuit 14, the sixth switch unit Q6, the seventh switch unit Q7, the eighth switch unit Q8, the ninth switch unit Q9, the tenth switch unit Q10, the eleventh switch unit Q11, and the twelfth switch unit Q12 are turned on, and the first switch unit Q1, the second switch unit Q2, the third switch unit Q3, the fourth switch unit Q4, the fifth switch unit Q5, the thirteenth switch unit Q13, and the fourteenth switch unit Q14 are turned off.

[0132] Figure 10 Yes Figure 9 The third circuit 4 formed by the voltage conversion circuit in the first state of the switch circuit 14. Figure 11 Yes Figure 9 The fourth circuit 5 formed by the voltage conversion circuit in the second state of the switch circuit 14. From Figure 10 It can be obtained that in the first state of the switch circuit 14, the voltage of the first energy storage unit ES1 is the voltage of the first electrical connection end 11 minus the voltage of the second electrical connection end 12. From Figure 10 And Figure 11It can be obtained that in the first state and the second state of the switching circuit 14, the second energy storage unit ES2, the third energy storage unit ES3, and the fourth energy storage unit ES4 make the voltage of the first energy storage unit ES1 four times the voltage of the second electrical connection terminal 12, or the voltage of the first energy storage unit ES1 is four-fifths of the voltage of the first electrical connection terminal 11, so that the voltage of the first electrical connection terminal 11 is five times the voltage of the second electrical connection terminal 12.

[0133] It can also be obtained that Figure 10 in the second state of the switching circuit 14, the voltage of the fifth energy storage unit ES5 is the voltage of the first electrical connection terminal 11 minus the voltage of the second electrical connection terminal 12. It can also be obtained that Figure 10 and Figure 11 in the first state and the second state of the switching circuit 14, the sixth energy storage unit ES6, the seventh energy storage unit ES7, and the eighth energy storage unit ES8 make the voltage of the fifth energy storage unit ES5 four times the voltage of the second electrical connection terminal 12, or the voltage of the fifth energy storage unit ES5 is four-fifths of the voltage of the first electrical connection terminal 11, so that the voltage of the first electrical connection terminal 11 is five times the voltage of the second electrical connection terminal 12.

[0134] It can be understood that by changing the combination of the first switch unit Q1, the second switch unit Q2, the third switch unit Q3, the fourth switch unit Q4, the fifth switch unit Q5, the sixth switch unit Q6, the seventh switch unit Q7, the eighth switch unit Q8, the ninth switch unit Q9, the tenth switch unit Q10, the eleventh switch unit Q11, the twelfth switch unit Q12, the thirteenth switch unit Q13, and the fourteenth switch unit Q14, as well as the timing of conduction and disconnection, the voltage of the first electrical connection terminal 11 may not be five times the voltage of the second electrical connection terminal 12, and there may be other relationships between the voltage of the first electrical connection terminal 11 and the voltage of the second electrical connection terminal 12 to obtain different voltage conversion effects.

[0135] In this embodiment, when the state of the switching circuit alternates between the first state and the second state, regardless of whether the switching circuit is in the first state or the second state, the voltage of the first electrical connection terminal can be made five times the voltage of the second electrical connection terminal, and a stable voltage conversion effect can be obtained.

[0136] In some possible embodiments, each of the energy storage units in the first energy storage unit ES1, the second energy storage unit ES2, the third energy storage unit ES3, the fourth energy storage unit ES4, the fifth energy storage unit ES5, the sixth energy storage unit ES6, the seventh energy storage unit ES7, and the eighth energy storage unit ES8 includes a first capacitor, or a plurality of second capacitors connected in series, or a plurality of third capacitors connected in parallel.

[0137] In some examples, each energy storage unit includes a first capacitor. The first end of the first capacitor is the first end of the corresponding energy storage unit, and the second end of the first capacitor is the second end of the corresponding energy storage unit. The small number of first capacitors can reduce the volume and weight of the energy storage unit.

[0138] In other examples, each energy storage unit includes a plurality of second capacitors connected in series. The first end of the first second capacitor in series among the plurality of second capacitors is the first end of the corresponding energy storage unit, and the second end of the last second capacitor in series is the second end of the corresponding energy storage unit. The plurality of second capacitors connected in series can share the voltage, thereby improving the voltage withstand capacity of the entire energy storage unit. At the same time, with a plurality of second capacitors connected in series, a smaller equivalent capacitance can be obtained, which is suitable for circuit designs that require a smaller capacitance value.

[0139] In other examples, each energy storage unit includes a plurality of third capacitors connected in parallel. The first ends of the plurality of third capacitors are electrically connected to form the first end of the corresponding energy storage unit, and the second ends of the plurality of third capacitors are electrically connected to form the second end of the corresponding energy storage unit. The plurality of third capacitors connected in parallel can share the current, thereby improving the current handling capacity of the entire energy storage unit. At the same time, with a plurality of third capacitors connected in parallel, a larger equivalent capacitance can be obtained, which is suitable for circuit designs that require a larger capacitance value.

[0140] The first capacitor, the second capacitor, and the third capacitor can be polarized capacitors, which are capacitors with a positive electrode and a negative electrode. The first end and the second end of the first capacitor or the second capacitor or the third capacitor described above are not equal to the positive end and the negative end of the first capacitor or the second capacitor or the third capacitor. The correspondence between the first end and the second end of the first capacitor or the second capacitor or the third capacitor and the positive end or the negative end of the first capacitor or the second capacitor or the third capacitor depends on the specific circuit structure.

[0141] In this embodiment, it is possible to select that each energy storage unit includes a first capacitor, or a plurality of second capacitors connected in series, or a plurality of third capacitors connected in parallel, so that the performance of the energy storage unit meets the requirements of the voltage conversion circuit, improving the adaptability of the energy storage unit.

[0142] In some possible embodiments, each energy storage unit further includes a first inductor, and the first inductor is connected in series with the first capacitor; or a plurality of second inductors, and each second inductor is connected in series with a second capacitor; or a plurality of third inductors, and each third inductor is connected in series with a third capacitor.

[0143] In some examples, each energy storage unit includes a first capacitor and a first inductor connected in series. The first end of the first capacitor is the first end of the corresponding energy storage unit. The second end of the first capacitor is electrically connected to the first end of the first inductor, and the second end of the first inductor is the second end of the corresponding energy storage unit. Or the first end of the first inductor is the first end of the corresponding energy storage unit. The second end of the first inductor is electrically connected to the first end of the first capacitor, and the second end of the first capacitor is the second end of the corresponding energy storage unit.

[0144] In some other examples, each energy storage unit includes a plurality of second capacitors connected in series, and each second capacitor is connected in series with a second inductor. When the second end of each second capacitor is electrically connected to the first end of a second inductor, the first end of the first series-connected second capacitor among the plurality of second capacitors is the first end of the corresponding energy storage unit, and the second end of the last series-connected second inductor among the plurality of inductors is the second end of the corresponding energy storage unit. Or when the first end of each second capacitor is electrically connected to the second end of a second inductor, the first end of the first series-connected second inductor among the plurality of second inductors is the first end of the corresponding energy storage unit, and the second end of the last series-connected second capacitor among the plurality of second capacitors is the second end of the corresponding energy storage unit.

[0145] In some other examples, each energy storage unit includes a plurality of third capacitors connected in parallel, and each third capacitor is connected in series with a third inductor. When the second end of each third capacitor is electrically connected to the first end of a third inductor, the first ends of the plurality of third capacitors are electrically connected to form the first end of the corresponding energy storage unit, and the second ends of the plurality of third inductors are electrically connected to form the second end of the corresponding energy storage unit. Or when the first end of each third capacitor is connected to the second end of a third inductor, the first ends of the plurality of third inductors are electrically connected to form the first end of the corresponding energy storage unit, and the second ends of the plurality of third capacitors are electrically connected to form the second end of the corresponding energy storage unit.

[0146] The series connection of a capacitor and an inductor can form a resonant circuit, and the resonant circuit can resonate at a specific frequency. The essence of the resonance phenomenon is the mutual conversion between the electric field energy in the capacitor and the magnetic field energy in the inductor. As one increases, the other decreases, and they completely compensate each other. The total sum of the electric field energy and the magnetic field energy remains constant at all times, and the power supply only needs to supply the electric energy consumed by the resistance in the circuit.

[0147] In this embodiment, each capacitor of the energy storage unit is connected in series with an inductor, which can form a resonant circuit, filter out noise interference, ensure the purity of the electric energy output by the voltage conversion circuit, and avoid interference to the radio frequency module, processor, etc. of the device.

[0148] In some possible embodiments, the voltage conversion component 1 further includes a voltage stabilizing capacitor. The voltage stabilizing capacitor plays roles such as filtering, energy storage, voltage stabilization, and protecting the load from voltage fluctuations, electromagnetic interference, overvoltage, etc. in the circuit.

[0149] The first end of the voltage stabilizing capacitor is electrically connected to the first electrical connection end 11 or the second electrical connection end 12, and the second end of the voltage stabilizing capacitor is electrically connected to the grounding end. In some examples, the first electrical connection end 11 is the power input end, the second electrical connection end 12 is the power output end, the first end of the voltage stabilizing capacitor is connected to the second electrical connection end 12, and the second end of the voltage stabilizing capacitor is grounded. In other examples, the first electrical connection end 11 is the power output end, the second electrical connection end 12 is the power input end, the first end of the voltage stabilizing capacitor is connected to the first electrical connection end 11, and the second end of the voltage stabilizing capacitor is grounded.

[0150] In this embodiment, a voltage stabilizing capacitor is provided between the power output end and the grounding end of the voltage conversion component, which can improve the quality of the electric energy output by the voltage conversion circuit and protect the load.

[0151] In some possible embodiments, the voltage of the first electrical connection end 11 is five times the voltage of the second electrical connection end 12.

[0152] In some examples, the first electrical connection end 11 is the power input end, the second electrical connection end 12 is the power output end, and the voltage conversion component 1 is a buck circuit that reduces the output voltage to one-fifth of the input voltage.

[0153] In other examples, the first electrical connection end 11 is the power output end, the second electrical connection end 12 is the power input end, and the voltage conversion component 1 is a boost circuit that raises the output voltage to five times the input voltage.

[0154] In this embodiment, the voltage conversion component can achieve a five-fold boost or a one-fifth buck through fourteen switching units, reducing the number of switching devices in the switching circuit, thereby reducing the switching loss and driving loss of the switching devices in the switching circuit, improving the conversion efficiency of the voltage conversion circuit, and reducing the volume and weight of the voltage conversion circuit.

[0155] In some possible embodiments, the voltage conversion circuit includes a plurality of voltage conversion components 1, and the plurality of voltage conversion components 1 are connected in series, or the plurality of voltage conversion components 1 are connected in parallel, or some of the voltage conversion components 1 are connected in parallel and then connected in series with another part of the voltage conversion components 1.

[0156] In some examples, the plurality of voltage conversion components 1 of the voltage conversion circuit are connected in series, so as to achieve a higher multiple of voltage conversion.

[0157] In other examples, the plurality of voltage conversion components 1 of the voltage conversion circuit are connected in parallel, so as to obtain a higher output current.

[0158] In some other examples, after some voltage conversion components 1 of the voltage conversion circuit are connected in parallel and then connected in series with another part of the voltage conversion components 1, a higher output current can be obtained, and at the same time, a higher multiple of voltage conversion can be achieved.

[0159] In this embodiment, a voltage conversion circuit includes multiple voltage conversion components, and the connection mode of the multiple voltage conversion components can be set according to requirements, so as to obtain the required electric energy.

[0160] In some exemplary embodiments, a power management chip is provided, which includes any one of the voltage conversion circuits in the above embodiments. Due to the adoption of the voltage conversion circuit in the above embodiments, the voltage conversion efficiency of the power management chip can be improved, and the volume and weight of the power management chip can be reduced.

[0161] In some exemplary embodiments, a system-on-chip is provided, which includes the power management chip in the above embodiments. Due to the adoption of the power management chip in the above embodiments, the voltage conversion efficiency of the system-on-chip can be improved, and the volume and weight of the system-on-chip can be reduced.

[0162] In some exemplary embodiments, an electronic device is provided, which includes the power management chip or the system-on-chip in the above embodiments. The electronic device is, for example, a mobile phone, a laptop computer, a tablet computer, a wearable device, etc. Due to the adoption of the power management chip or the system-on-chip in the above embodiments, the voltage conversion efficiency inside the electronic device can be improved, and the volume and weight of the electronic device can be reduced.

[0163] Those skilled in the art will readily conceive of other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common general knowledge or conventional technical means in the technical field not disclosed by the present disclosure. The specification and embodiments are only to be considered as exemplary, and the true scope and spirit of the present disclosure are pointed out by the following claims.

[0164] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A voltage conversion circuit, characterized in that, Comprising at least one voltage conversion component, the voltage conversion component comprising: A first electrical connection terminal; A second electrical connection terminal; An energy storage circuit, the energy storage circuit comprising a first energy storage component and a second energy storage component connected electrically; A switching circuit, the switching circuit being electrically connected to the first electrical connection terminal, the second electrical connection terminal, the first energy storage component and the second energy storage component, the switching circuit having a first state and a second state; In the first state, there is a first relationship between the voltage of the first energy storage component and the voltages of the first electrical connection terminal and the second electrical connection terminal; in the first state and the second state, the second energy storage component causes there to be a second relationship between the voltage of the first energy storage component and the voltage of the first electrical connection terminal or the second electrical connection terminal; the first relationship and the second relationship cause there to be a third relationship between the voltage of the first electrical connection terminal and the voltage of the second electrical connection terminal.

2. The voltage conversion circuit according to claim 1, wherein, The switching circuit comprises: A first switching component, the first switching component being electrically connected to the first energy storage component, the second energy storage component, the first electrical connection terminal and the second electrical connection terminal; A second switching component, the second switching component being electrically connected to the first switching component, the first energy storage component, the second energy storage component and the second electrical connection terminal.

3. The voltage conversion circuit according to claim 2, wherein The first switching component and the second switching component conduct alternately; in the first state, the first switching component conducts and the second switching component is off; in the second state, the second switching component conducts and the first switching component is off.

4. The voltage conversion circuit according to claim 2, wherein The first switching component comprises a first switching unit, a second switching unit, a third switching unit, a fourth switching unit and a fifth switching unit, the second switching component comprises a sixth switching unit, a seventh switching unit, an eighth switching unit and a ninth switching unit; A first end of the first switching unit is electrically connected to the first electrical connection terminal, and a second end of the first switching unit is electrically connected to a first end of the sixth switching unit and a first end of the first energy storage component; A first end of the second switching unit is electrically connected to a second end of the sixth switching unit and a first end of the second energy storage component, and a second end of the second switching unit is electrically connected to a first end of the seventh switching unit and a second end of the second energy storage component; A first end of the third switching unit is electrically connected to a second end of the seventh switching unit and a third end of the second energy storage component, and a second end of the third switching unit is electrically connected to a first end of the fourth switching unit, a first end of the eighth switching unit and the second electrical connection terminal; A second end of the fourth switching unit is electrically connected to a first end of the ninth switching unit, a second end of the first energy storage component and a fourth end of the second energy storage component; A first end of the fifth switching unit is electrically connected to a second end of the eighth switching unit and a fifth end of the second energy storage component, and a second end of the fifth switching unit is electrically connected to a second end of the ninth switching unit and a ground terminal.

5. The voltage conversion circuit according to claim 4, characterized in that, The first energy storage component includes a first energy storage unit, and the second energy storage component includes a second energy storage unit, a third energy storage unit, and a fourth energy storage unit; A first end of the first energy storage unit is electrically connected to a second end of the first switch unit and a first end of the sixth switch unit, and a second end of the first energy storage unit is electrically connected to a first end of the second energy storage unit, a second end of the fourth switch unit, and a first end of the ninth switch unit; A second end of the second energy storage unit is electrically connected to a second end of the second switch unit and a first end of the seventh switch unit; A first end of the third energy storage unit is electrically connected to a first end of the second switch unit and a second end of the sixth switch unit, and a second end of the third energy storage unit is electrically connected to a first end of the fourth energy storage unit, a first end of the fifth switch unit, and a second end of the eighth switch unit; A second end of the fourth energy storage unit is electrically connected to a first end of the third switch unit and a second end of the seventh switch unit.

6. The voltage conversion circuit according to claim 5, wherein The switching circuit further includes: A third switch component, which is electrically connected to the first switch component, the second switch component, the first electrical connection end, and the second electrical connection end; A fourth switch component, which is electrically connected to the third switch component; The energy storage circuit further includes: A third energy storage component, which is electrically connected to the first switch component, the second switch component, the third switch component, the fourth switch component, and the second energy storage component; A fourth energy storage component, which is electrically connected to the first switch component, the second switch component, the third switch component, the fourth switch component, the first energy storage component, the second energy storage component, and the third energy storage component.

7. The voltage conversion circuit according to claim 6, wherein The third switch component and the fourth switch component are alternately turned on; in the first state, the fourth switch component is turned on and the third switch component is turned off; in the second state, the third switch component is turned on and the fourth switch component is turned off.

8. The voltage conversion circuit according to claim 6, wherein The third switch component includes a tenth switch unit, an eleventh switch unit, and a twelfth switch unit, and the fourth switch component includes a thirteenth switch unit and a fourteenth switch unit; A first end of the tenth switch unit is electrically connected to a first end of the first switch unit and the first electrical connection end, and a second end of the tenth switch unit is electrically connected to a first end of the thirteenth switch unit and a first end of the third energy storage component; A first end of the eleventh switch unit is electrically connected to a second end of the thirteenth switch unit and a first end of the fourth energy storage component, and a second end of the eleventh switch unit is electrically connected to a first end of the fourteenth switch unit and a second end of the fourth energy storage component; The first end of the twelfth switching unit is electrically connected to both the second end of the fourteenth switching unit and the third end of the fourth energy storage component. The second end of the twelfth switching unit is electrically connected to the second end of the third switching unit, the first end of the fourth switching unit, the first end of the eighth switching unit, and the second electrical connection end.

9. The voltage conversion circuit according to claim 8, wherein, Each of the first switching unit, the second switching unit, the third switching unit, the fourth switching unit, the fifth switching unit, the sixth switching unit, the seventh switching unit, the eighth switching unit, the ninth switching unit, the tenth switching unit, the eleventh switching unit, the twelfth switching unit, the thirteenth switching unit, and the fourteenth switching unit includes: A first switching device; or, Multiple second switching devices connected in series; or, Multiple third switching devices connected in parallel.

10. The voltage conversion circuit according to claim 8, characterized in that, The third energy storage component includes a fifth energy storage unit, and the fourth energy storage component includes a sixth energy storage unit, a seventh energy storage unit, and an eighth energy storage unit; The first end of the fifth energy storage unit is electrically connected to both the second end of the tenth switching unit and the first end of the thirteenth switching unit. The second end of the fifth energy storage unit is electrically connected to the second end of the third energy storage unit, the first end of the fourth energy storage unit, the first end of the sixth energy storage unit, the first end of the fifth switching unit, and the second end of the eighth switching unit; The second end of the sixth energy storage unit is electrically connected to both the second end of the eleventh switching unit and the first end of the fourteenth switching unit; The first end of the seventh energy storage unit is electrically connected to both the first end of the eleventh switching unit and the second end of the thirteenth switching unit. The second end of the seventh energy storage unit is electrically connected to the second end of the first energy storage unit, the first end of the second energy storage unit, the first end of the eighth energy storage unit, the second end of the fourth switching unit, and the first end of the ninth switching unit; The second end of the eighth energy storage unit is electrically connected to both the first end of the twelfth switching unit and the second end of the fourteenth switching unit.

11. The voltage conversion circuit according to claim 10, wherein Each of the first energy storage unit, the second energy storage unit, the third energy storage unit, the fourth energy storage unit, the fifth energy storage unit, the sixth energy storage unit, the seventh energy storage unit, and the eighth energy storage unit includes: A first capacitor; or, Multiple second capacitors connected in series; or, Multiple third capacitors connected in parallel.

12. The voltage conversion circuit according to claim 11, characterized in that, Each of the energy storage units further includes: A first inductor, the first inductor being connected in series with the first capacitor; or, Multiple second inductors, each second inductor being connected in series with one of the second capacitors; or, Multiple third inductors, each third inductor being connected in series with one of the third capacitors.

13. The voltage conversion circuit according to claim 1, characterized in that, The voltage conversion component further includes: A voltage stabilizing capacitor, the first end of the voltage stabilizing capacitor being electrically connected to the first electrical connection end or the second electrical connection end, and the second end of the voltage stabilizing capacitor being electrically connected to the ground end.

14. The voltage conversion circuit according to any one of claims 1 to 13, characterized in that, The voltage of the first electrical connection end is five times the voltage of the second electrical connection end.

15. The voltage conversion circuit according to any one of claims 1 to 13, characterized in that The voltage conversion circuit includes a plurality of the voltage conversion components, and the plurality of voltage conversion components are connected in series; alternatively, the plurality of voltage conversion components are connected in parallel; alternatively, after a part of the voltage conversion components are connected in parallel, they are connected in series with another part of the voltage conversion components.

16. A power management chip, characterized in that, It includes the voltage conversion circuit according to any one of claims 1 to 15.

17. A system-on-chip, characterized in that, It includes the power management chip according to claim 16.

18. An electronic device, characterized in that, It includes the power management chip according to claim 16 or the system-on-chip according to claim 17.

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