Electric energy recovery power supply circuit and electronic equipment

Abstract

The invention discloses an electric energy recovery power supply circuit and electronic equipment. The electric energy recovery power supply circuit comprises a switch module, an energy storage module and a control module, the energy storage module stores the electric energy (namely the residual electric energy of the first load) of the first output end of the switch module under the condition that the switch module stops supplying power to the first load, so that the residual electric energy of the first load can be recycled; when the electric energy stored by the energy storage module is greater than the preset threshold value, the switch module is controlled to supply power to the second load based on the electric energy of the energy storage module, so that the residual electric energy of the first load can be reused, and the energy-saving effect is achieved.

Description

Technical Field

[0001] This application belongs to the field of power supply circuits, and particularly relates to an electric energy recovery power supply circuit and an electronic device. Background Art

[0002] Currently, most electronic devices usually have high-power-consuming loads and low-power-consuming loads. Among them, the low-power-consuming loads usually still need to keep working after the high-power-consuming loads stop working, so as to maintain the standby state or low-power state of the electronic device.

[0003] However, after the high-power-consuming load stops working, there is usually some residual electric energy in the high-power-consuming load. This part of the electric energy is usually wasted, and the residual electric energy may affect the normal startup of the electronic device next time. Summary of the Invention

[0004] The purpose of this application is to provide an electric energy recovery power supply circuit and an electronic device, aiming to solve the problem of electric energy residue in high-power-consuming loads existing in traditional electronic devices.

[0005] The first aspect of the embodiment of this application provides an electric energy recovery power supply circuit, including: a switch module, the input end of the switch module is used to connect to a power supply, the first output end of the switch module is used to connect to a first load, and the second output end of the switch module is used to connect to a second load; an energy storage module, the energy storage module is respectively connected to the first output end of the switch module and the second output end of the switch module; a control module, the control module is respectively connected to the switch module and the energy storage module, and the control module is used to control the switch module to supply power to the energy storage module based on the electric energy at the first output end of the switch module when the switch module stops supplying power to the first load, and when the electric energy stored in the energy storage module is greater than a preset threshold, control the switch module to supply power to the second load based on the electric energy of the energy storage module.

[0006] In one embodiment, the control module includes a mode switching unit and a comparison unit; the mode switching unit is connected to the switching module, and the mode switching unit is configured to control the switching module to switch between a first power supply mode and a second power supply mode. The switching module is configured to supply power to the first load and the second load based on the electric energy provided by the power supply when in the first power supply mode, and supply power to the second load based on the electric energy provided by the power supply or the electric energy stored in the energy storage module when in the second power supply mode. The comparison unit is respectively connected to the switching module and the energy storage module, and the comparison unit is configured to, when the switching module operates in the second power supply mode, control the switching module to supply power to the second load based on the electric energy of the energy storage module when the electric energy stored in the energy storage module is greater than a preset threshold, and control the switching module to supply power to the second load based on the electric energy provided by the power supply when the electric energy stored in the energy storage module is less than the preset threshold.

[0007] In one embodiment, the switching module includes a first power supply switching unit and a second power supply switching unit; a first end of the first power supply switching unit is connected to an input end of the switching module, a second end of the first power supply switching unit is respectively connected to a first end of the second power supply switching unit, a second output end of the switching module, and the energy storage module, a control end of the first power supply switching unit is connected to the comparison unit, a second end of the second power supply switching unit is respectively connected to a first output end of the switching module and the energy storage module, and a control end of the second power supply switching unit is connected to the mode switching unit.

[0008] In one embodiment, when the switching module is in the first power supply mode, the mode switching unit is configured to control the second power supply switching unit to conduct, and when the switching module is in the second power supply mode, the mode switching unit is configured to control the second power supply switching unit to turn off; the first power supply switching unit is a normally closed switching unit, and the comparison unit is configured to control the first power supply switching unit to turn off when supplying power to the second load based on the electric energy of the energy storage module.

[0009] In one embodiment, the switching module further includes a charging switch unit, an output switch unit, a first unidirectional conductor, and a second unidirectional conductor, and the energy storage module includes an energy storage capacitor; the input end of the first unidirectional conductor is connected to the first output end of the switching module, the output end of the first unidirectional conductor is connected to the first end of the charging switch unit, the second end of the charging switch unit is connected to the first end of the energy storage capacitor, the second end of the energy storage capacitor is grounded, the first end of the output switch unit is connected to the first end of the energy storage capacitor, the second end of the output switch unit is connected to the input end of the second unidirectional conductor, the output end of the second unidirectional conductor is connected to the second output end of the switching module, and the control ends of the charging switch unit and the output switch unit are both connected to the control module.

[0010] In one embodiment, when the switching module is in the first power supply mode, the mode switching unit is used to control the charging switch unit to turn off; when the switching module is in the second power supply mode, the mode switching unit is used to control the charging switch unit to turn on; in the case where the switching module switches from the first power supply mode to the second power supply mode, the comparison unit is used to first control the output switch unit to turn off, and when the voltage at the first end of the energy storage capacitor increases and is greater than a first voltage preset threshold, control the output switch unit to turn on and the first power supply switch unit to turn off; when the voltage at the first end of the energy storage capacitor decreases and is less than a second voltage preset threshold, control the output switch unit to turn off and the first power supply switch unit to turn on; the first voltage preset threshold is greater than the second voltage preset threshold.

[0011] In one embodiment, the comparison unit includes a reference voltage source and a hysteresis comparator; the first input end of the hysteresis comparator is connected to the first end of the energy storage capacitor, the second input end of the hysteresis comparator is connected to the reference voltage source, and the output end of the hysteresis comparator is respectively connected to the control ends of the first power supply switch unit and the output switch unit.

[0012] In one embodiment, the switching module further includes a third power supply switch unit, the first end of the third power supply switch unit is used to be connected to the power supply, the second end of the third power supply switch unit is connected to the power supply end of the comparison unit, and the control end of the third power supply switch unit is connected to the mode switching unit.

[0013] A second aspect of the embodiments of the present application provides an electronic device, including a first load, a second load, and the power recovery and supply circuit as described above; both the first load and the second load are connected to a power supply through the power recovery and supply circuit.

[0014] In one embodiment, the power consumption of the first load is greater than that of the second load.

[0015] The beneficial effects of the embodiments of the present application compared with the prior art are as follows: when the switching module stops supplying power to the first load, the energy storage module stores the electric energy at the first output end of the switching module (i.e., the residual electric energy of the first load), so that the recovery of the residual electric energy of the first load can be realized; and when the electric energy stored in the energy storage module is greater than a preset threshold, the switching module can supply power to the second load based on the electric energy of the energy storage module, thereby realizing the reuse of the residual electric energy of the first load and achieving an energy-saving effect. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of the power recovery and supply circuit provided by an embodiment of the present application;

[0017] Figure 2 It is a specific structural diagram of the power recovery and supply circuit provided by an embodiment of the present application;

[0018] Figure 3 It is a specific circuit diagram of the switching module and the energy storage module provided by an embodiment of the present application;

[0019] Figure 4 It is a specific circuit diagram of the comparison unit provided by an embodiment of the present application;

[0020] Figure 5 It is a schematic diagram of the electronic device provided by an embodiment of the present application. Detailed Embodiments

[0021] In order to make the technical problems, technical solutions, and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0022] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0023] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0024] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically defined.

[0025] Figure 1 The schematic structural diagram of the power recovery and supply circuit provided by an embodiment of the present application is shown. For the convenience of description, only the parts related to this embodiment are shown and are described in detail as follows:

[0026] A power recovery and supply circuit 100 includes: a switch module 110, an energy storage module 120, and a control module 130. The input end of the switch module 110 is used to connect to a power supply 200. The first output end of the switch module 110 is used to connect to a first load 300. The second output end of the switch module 110 is used to connect to a second load 400. The energy storage module 120 is respectively connected to the first output end of the switch module 110 and the second output end of the switch module 110. The control module 130 is respectively connected to the switch module 110 and the energy storage module 120. The control module 130 is used to control the switch module 110 to charge the energy storage module 120 based on the electrical energy at the first output end of the switch module 110 when the switch module 110 stops supplying power to the first load 300, and when the electrical energy stored in the energy storage module 120 is greater than a preset threshold, control the switch module 110 to supply power to the second load 400 based on the electrical energy of the energy storage module 120.

[0027] By means of the energy storage module 120 storing the electrical energy at the first output end of the switch module 110 (i.e., the residual electrical energy of the first load 300) when the switch module 110 stops supplying power to the first load 300, the recovery of the residual electrical energy of the first load 300 can be achieved. And when the electrical energy stored in the energy storage module 120 is greater than a preset threshold, the switch module 110 can be controlled to supply power to the second load 400 based on the electrical energy of the energy storage module 120, thereby realizing the reuse of the residual electrical energy of the first load 300 and achieving an energy-saving effect.

[0028] Among them, the power consumption of the first load 300 can be greater than that of the second load 400. The first load 300 with a larger power consumption usually has more capacitors, resulting in relatively larger residual electrical energy in the first load 300 after power supply to the first load 300 is stopped. Therefore, the electrical energy that can be recycled through the electrical energy recovery power supply circuit 100 is also relatively large and can be used by the second load 400 with a lower power consumption.

[0029] In one embodiment, as Figure 2 shown, the control module 130 includes a mode switching unit 131 and a comparison unit 132.

[0030] The mode switching unit 131 is connected to the switch module 110. The mode switching unit 131 is used to control the switch module 110 to switch between the first power supply mode and the second power supply mode. The switch module 110 is used to supply power to the first load 300 and the second load 400 based on the electrical energy provided by the power supply 200 when in the first power supply mode, and to supply power to the second load 400 based on the electrical energy provided by the power supply module 200 or the electrical energy stored in the energy storage module 120 when in the second power supply mode. The comparison unit 132 is respectively connected to the switch module 110 and the energy storage module 120. The comparison unit 132 is used to control the switch module 110 to supply power to the second load 400 based on the electrical energy of the energy storage module 120 when the electrical energy stored in the energy storage module 120 is greater than a preset threshold in the case where the switch module 110 operates in the second power supply mode, and to control the switch module 110 to supply power to the second load 400 based on the electrical energy provided by the power supply 200 when the electrical energy stored in the energy storage module 120 is less than the preset threshold.

[0031] Specifically, the switch module 110 may include a plurality of switching devices, and the mode switching unit 131 can control each switching device to achieve power supply control for the first load 300 and the second load 400.

[0032] The comparison unit 132 can, in the second power supply mode, realize power supply switching between the energy storage module 120 power supply and the power supply 200 power supply by controlling the switch module 110. For example, when there is sufficient electrical energy stored in the energy storage module 120, the comparison unit 132 can control the switch module 110 to supply power to the second load 400 using the electrical energy stored in the energy storage module 120, thereby realizing the reuse of the residual electrical energy of the first load 300.

[0033] In one embodiment, the switch module 110 includes a first power supply switch unit 111 and a second power supply switch unit 112.

[0034] The first end of the first power supply switch unit 111 is connected to the input end of the switch module 110. The second end of the first power supply switch unit 111 is respectively connected to the first end of the second power supply switch unit 112, the second output end of the switch module 110, and the energy storage module 120. The control end of the first power supply switch unit 111 is connected to the comparison unit 132. The second end of the second power supply switch unit 112 is respectively connected to the first output end of the switch module 110 and the energy storage module 120. The control end of the second power supply switch unit 112 is connected to the mode switching unit 131.

[0035] Specifically, as Figure 3 , Figure 4 shown, the first power supply switch unit 111 may include a first resistor R1, a second resistor R2, a first P-type MOS transistor Q1, and a first N-type MOS transistor Q2. The second power supply switch unit 112 may include a third resistor R3, a fourth resistor R4, a second P-type MOS transistor Q3, and a second N-type MOS transistor Q4.

[0036] The source of the first P-type MOS transistor Q1 is connected to the input end of the switch module 110 and the first end of the first resistor R1. The drain of the first P-type MOS transistor Q1 is respectively connected to the source of the second P-type MOS transistor Q3, the second output end of the switch module 110, and the energy storage module 120. The gate of the first P-type MOS transistor Q1 is connected to the second end of the first resistor R1 and the first end of the second resistor R2. The second end of the second resistor R2 is connected to the drain of the first N-type MOS transistor Q2. The source of the first N-type MOS transistor Q2 is grounded. The gate of the first N-type MOS transistor Q2 is connected to the comparison unit 132. [[ID=,12]]

[0037] The source of the second P-type MOS transistor Q3 is connected to the drain of the first P-type MOS transistor Q1 and the first end of the third resistor R3. The drain of the second P-type MOS transistor Q3 is respectively connected to the first output end of the switch module 110 and the energy storage module 120. The gate of the second P-type MOS transistor Q3 is connected to the second end of the third resistor R3 and the first end of the fourth resistor R4. The second end of the fourth resistor R4 is connected to the drain of the second N-type MOS transistor Q4. The source of the second N-type MOS transistor Q4 is grounded. The gate of the second N-type MOS transistor Q4 is connected to the mode switching unit 131. Among them, the first N-type MOS transistor Q2 and the second N-type MOS transistor Q4 are both used as inverters to control the first P-type MOS transistor Q1 and the second P-type MOS transistor Q3 respectively.

[0038] It can be understood that the first power supply switch unit 111 and the second power supply switch unit 112 can realize the connection between the first load 300, the second load 400, and the power supply 200.

[0039] When both the first power supply switch unit 111 and the second power supply switch unit 112 are turned on, the power supply 200 can supply power to the first load 300 and the second load 400 simultaneously. When the first power supply switch unit 111 is turned on and the second power supply switch unit 112 is turned off, the power supply 200 supplies power only to the second load 400. When both the first power supply switch unit 111 and the second power supply switch unit 112 are turned off, the power supply 200 stops supplying power to the first load 300 and the second load 400. At this time, the energy storage module 120 can supply power to the second load 400.

[0040] Specifically, the energy storage capacitor C5 can specifically be a supercapacitor.

[0041] In one embodiment, when the switch module 110 is in the first power supply mode, the mode switching unit 131 is used to control the second power supply switch unit 112 to turn on. When the switch module 110 is in the second power supply mode, the mode switching unit 131 is used to control the second power supply switch unit 112 to turn off. The first power supply switch unit 111 is a normally closed switch unit. The comparison unit 132 is used to control the first power supply switch unit 111 to turn off simultaneously when supplying power to the second load 400 based on the electric energy of the energy storage module 120.

[0042] The mode switching unit 131 and the second power supply switch unit 112 can control whether to supply power to the first load 300. The comparison unit 132 can, when the switch module 110 stops supplying power to the first load 300, according to the electric energy condition of the energy storage module 120, control whether the power supply 200 supplies power to the second load 400 through the first power supply switch unit 111.

[0043] In one embodiment, as Figure 2 , Figure 3 , Figure 4 shown, the switch module 110 further includes a charging switch unit 113, an output switch unit 114, a first one-way conductor D1, and a second one-way conductor D2. The energy storage module 120 includes an energy storage capacitor C5.

[0044] The input end of the first one-way conductor D1 is connected to the first output end of the switch module 110. The output end of the first one-way conductor D1 is connected to the first end of the charging switch unit 113. The second end of the charging switch unit 113 is connected to the first end of the energy storage capacitor C5. The second end of the energy storage capacitor C5 is grounded. The first end of the output switch unit 114 is connected to the first end of the energy storage capacitor C5. The second end of the output switch unit 114 is connected to the input end of the second one-way conductor D2. The output end of the second one-way conductor D2 is connected to the second output end of the switch module 110. The control ends of the charging switch unit 113 and the output switch unit 114 are both connected to the control module 130.

[0045] Specifically, both the first unidirectional conductor D1 and the second unidirectional conductor D2 may include diodes. The charging switch unit 113 includes a third P-type MOS transistor Q5 connected between the first unidirectional conductor D1 and the energy storage module 120. The output switch unit 114 includes a fourth P-type MOS transistor Q6 connected between the second unidirectional conductor D2 and the energy storage module 120.

[0046] The first unidirectional conductor D1 and the second unidirectional conductor D2 can achieve unidirectional current transmission, enabling the energy storage module 120 to only obtain electrical energy from the first output terminal (first load 300) of the switch module 110 and output electrical energy to the second output terminal (second load 400) of the switch module 110.

[0047] The charging switch unit 113 remains off in the first power supply mode and remains on in the second power supply mode. In the second power supply mode, the control module 130 can then control the output switch unit 114 according to the electrical energy stored in the energy storage module 120.

[0048] In an embodiment, when the switch module 110 is in the first power supply mode, the mode switching unit 131 controls the charging switch unit 113 to turn off. When the switch module 110 is in the second power supply mode, the mode switching unit 131 controls the charging switch unit 113 to turn on.

[0049] The comparison unit 132 is used to first control the output switch unit 114 to turn off, and when the voltage at the first end of the energy storage capacitor C5 increases and is greater than the first voltage preset threshold, control the output switch unit 114 to turn on and the first power supply switch unit 111 to turn off. The comparison unit 132 is also used to, when the voltage at the first end of the energy storage capacitor C5 decreases and is less than the second voltage preset threshold, control the output switch unit 114 to turn off and the first power supply switch unit 111 to turn on. The first voltage preset threshold is greater than the second voltage preset threshold.

[0050] The charging switch unit 113 can achieve charging control of the energy storage module 120 based on the residual electrical energy at the first output terminal (first load 300) of the switch module 110. In some embodiments, when the comparison unit 132 controls the output switch unit 114 to turn on, the mode switching unit 131 can also control the charging switch unit 113 to turn off.

[0051] It can be understood that the first voltage preset threshold and the second voltage preset threshold are positively correlated with the preset threshold. By making the first voltage preset threshold greater than the second voltage preset threshold, it is possible to avoid the output switch unit 114 from repeatedly turning on and off in a short period due to voltage oscillation at the first end of the energy storage capacitor C5.

[0052] In one embodiment, as Figure 3 、 Figure 4 shown, the comparison unit 132 includes a reference voltage source and a hysteresis comparator. The first input terminal of the hysteresis comparator is connected to the first terminal of the energy storage capacitor C5, the second input terminal of the hysteresis comparator is connected to the reference voltage source, and the output terminal of the hysteresis comparator is respectively connected to the control terminal of the first power supply switch unit 111 and the control terminal of the output switch unit 114.

[0053] The hysteresis comparator can be used to control the output switch unit 114 based on the first voltage preset threshold and the second voltage preset threshold.

[0054] Among them, the mode switching unit 131 can specifically be a microcontroller (Microcontroller Unit, MCU). It should be noted that compared with the traditional power supply circuit using a microcontroller, only a reference voltage source and a hysteresis comparator are added in this embodiment, and the power consumption is less. Through the reference voltage source and the hysteresis comparator, the control of the switch unit 114 can be realized without affecting the control logic of the mode switching unit 131.

[0055] The reference voltage source can be connected to the power supply 200 to generate a reference voltage based on the electric energy provided by the power supply 200. The hysteresis comparator specifically includes a first operational amplifier U1, a fifth resistor, a sixth resistor, and a seventh resistor. The inverting input terminal of the first operational amplifier U1 is connected to the first terminal of the energy storage capacitor C5, and the non-inverting input terminal of the first operational amplifier U1 is connected to the reference voltage source for accessing the reference voltage VREF. The non-inverting input terminal of the first operational amplifier U1 is connected to the output terminal of the first operational amplifier U1 through the fifth resistor R5. The output terminal of the first operational amplifier U1 is connected to the gates of the first N-type MOS transistor Q2 and the second N-type MOS transistor Q4.

[0056] The reference voltage VREF, the first voltage preset threshold, and the second voltage preset threshold can be set according to the specific power consumption requirements of the second load 400.

[0057] Exemplarily, in one embodiment, the reference voltage VREF can be 3.19V. Correspondingly, the first voltage preset threshold can be 3.21V, and the second voltage preset threshold can be 2.63V.

[0058] In one embodiment, as Figure 2 、 Figure 3 、 Figure 4As shown, the switch module 110 further includes a third power supply switch unit 115. The first end of the third power supply switch unit 115 is used to connect to the power supply 200. The second end of the third power supply switch unit 115 is connected to the power supply terminal of the comparison unit 132. The control end of the third power supply switch unit 115 is connected to the mode switching unit 131.

[0059] Specifically, the third power supply switch unit 115 can be connected between the power supply terminal of the first operational amplifier U1 and the power supply 200. The mode switching unit 131 can supply power to the first operational amplifier U1 only in the second power supply mode to reduce the overall power consumption of the power recovery power supply circuit 100.

[0060] In some embodiments, the mode switching unit 131 specifically includes a control chip. The control chip can be connected to each switch unit through multiple pins, or can be connected to each switch unit through one pin. It can be understood that in the case of connecting to each switch unit through one pin, the control logic of each switch unit can be configured by setting an inverter between the switch unit and the mode switching unit 131. The specific circuit of each switch unit can be set according to actual needs and will not be elaborated in this embodiment.

[0061] Figure 5 The structural schematic diagram of an electronic device provided by an embodiment of the present application is shown. For the sake of convenience of description, only the parts related to this embodiment are shown and are described in detail as follows:

[0062] An electronic device 500 includes a first load 300, a second load 400, and the power recovery power supply circuit 100 as described in any one of the above embodiments. Both the first load 300 and the second load 400 are connected to the power supply 200 through the power recovery power supply circuit 100.

[0063] Among them, the electronic device 500 can specifically be a doorbell. The first load 300 can specifically include a sounding device, and the second load 400 can specifically include a standby control circuit, a key circuit, etc.

[0064] In some embodiments, the power supply 200 includes a battery module and a voltage regulating module. The battery module is connected to the power recovery power supply circuit 100 through the voltage regulating module.

[0065] The voltage regulating module is used to regulate the power output by the battery module. In some embodiments, the voltage regulating module can specifically include a buck circuit. The battery module can specifically include a lithium battery.

[0066] By reusing the residual power of the first load 300, the power consumption of the battery module can be reduced, and the overall battery life of the electronic device 500 can be improved.

[0067] In one embodiment, the power consumption of the first load 300 is greater than that of the second load 400.

[0068] That is, the first load 300 is a high-power consumption load, and the second load 400 is a low-power consumption load. The residual electric energy of the first load 300 is relatively high and can meet the power requirements of a certain amount of the second load 400.

[0069] Those skilled in the art can clearly understand that for the convenience and brevity of description, only the above-mentioned division of each functional unit and module is used as an example. In practical applications, the above-mentioned functions can be allocated to different functional units and modules according to needs, that is, the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of a software functional unit. In addition, the specific names of each functional unit and module are only for the convenience of mutual distinction and do not limit the protection scope of the present application. The specific working process of the units and modules in the above system can refer to the corresponding process in the foregoing method embodiment and will not be elaborated herein.

[0070] In the above embodiments, the descriptions of each embodiment have their own emphases. For the parts not detailed or recorded in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0071] The above-described embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of each embodiment of the present application and should all be included in the protection scope of the present application.

Claims

1. An electric energy recovery power supply circuit, characterized in that, Comprising: A switch module, the input end of the switch module is connected to a power supply, the first output end of the switch module is connected to a first load, and the second output end of the switch module is connected to a second load; An energy storage module, the energy storage module is respectively connected to the first output end of the switch module and the second output end of the switch module; A control module, the control module is respectively connected to the switch module and the energy storage module, and the control module is configured to, when the switch module stops supplying power to the first load, control the switch module to supply power to the energy storage module based on the electric energy at the first output end of the switch module, and when the electric energy stored in the energy storage module is greater than a preset threshold, control the switch module to supply power to the second load based on the electric energy of the energy storage module.

2. The power supply circuit for power recovery according to claim 1, wherein The control module includes a mode switching unit and a comparison unit; The mode switching unit is connected to the switch module, and the mode switching unit is configured to control the switch module to switch between a first power supply mode and a second power supply mode. The switch module is configured to, when in the first power supply mode, supply power to the first load and the second load based on the electric energy provided by the power supply, and when in the second power supply mode, supply power to the second load based on the electric energy provided by the power supply or the electric energy stored in the energy storage module; The comparison unit is respectively connected to the switch module and the energy storage module, and the comparison unit is configured to, when the switch module operates in the second power supply mode, when the electric energy stored in the energy storage module is greater than a preset threshold, control the switch module to supply power to the second load based on the electric energy of the energy storage module, and when the electric energy stored in the energy storage module is less than the preset threshold, control the switch module to supply power to the second load based on the electric energy provided by the power supply.

3. The power supply circuit for power recovery according to claim 2, wherein, The switch module includes a first power supply switch unit and a second power supply switch unit; The first end of the first power supply switch unit is connected to the input end of the switch module, the second end of the first power supply switch unit is respectively connected to the first end of the second power supply switch unit, the second output end of the switch module and the energy storage module, the control end of the first power supply switch unit is connected to the comparison unit, the second end of the second power supply switch unit is respectively connected to the first output end of the switch module and the energy storage module, and the control end of the second power supply switch unit is connected to the mode switching unit.

4. The power supply circuit for power recovery according to claim 3, characterized in that When the switch module is in the first power supply mode, the mode switching unit controls the second power supply switch unit to conduct, and when the switch module is in the second power supply mode, the mode switching unit controls the second power supply switch unit to turn off; The first power supply switch unit is a normally closed switch unit, and the comparison unit is configured to control the first power supply switch unit to turn off when supplying power to the second load based on the electric energy of the energy storage module.

5. The power supply circuit for power recovery according to claim 3, characterized in that The switch module further includes a charging switch unit, an output switch unit, a first one-way conductor and a second one-way conductor, and the energy storage module includes an energy storage capacitor; The input end of the first unidirectional conductor is connected to the first output end of the switch module. The output end of the first unidirectional conductor is connected to the first end of the charging switch unit. The second end of the charging switch unit is connected to the first end of the energy storage capacitor. The second end of the energy storage capacitor is grounded. The first end of the output switch unit is connected to the first end of the energy storage capacitor. The second end of the output switch unit is connected to the input end of the second unidirectional conductor. The output end of the second unidirectional conductor is connected to the second output end of the switch module. The control ends of the charging switch unit and the output switch unit are both connected to the control module.

6. The power supply circuit for power recovery according to claim 5, wherein When the switch module is in the first power supply mode, the mode switching unit is used to control the charging switch unit to turn off. When the switch module is in the second power supply mode, the mode switching unit is used to control the charging switch unit to turn on. In the case where the switch module switches from the first power supply mode to the second power supply mode, the comparison unit is used to first control the output switch unit to turn off. And when the voltage at the first end of the energy storage capacitor increases, when the voltage at the first end of the energy storage capacitor is greater than the first voltage preset threshold, control the output switch unit to turn on and the first power supply switch unit to turn off. When the voltage at the first end of the energy storage capacitor decreases, when the voltage at the first end of the energy storage capacitor is less than the second voltage preset threshold, control the output switch unit to turn off and the first power supply switch unit to turn on. The first voltage preset threshold is greater than the second voltage preset threshold.

7. The power supply circuit for power recovery according to claim 5, characterized in that, The comparison unit includes a reference voltage source and a hysteresis comparator. The first input end of the hysteresis comparator is connected to the first end of the energy storage capacitor. The second input end of the hysteresis comparator is connected to the reference voltage source. The output end of the hysteresis comparator is respectively connected to the control end of the first power supply switch unit and the control end of the output switch unit.

8. The power supply circuit for power recovery according to any one of claims 2 to 7, characterized in that, The switch module further includes a third power supply switch unit. The first end of the third power supply switch unit is used to be connected to the power supply. The second end of the third power supply switch unit is connected to the power supply end of the comparison unit. The control end of the third power supply switch unit is connected to the mode switching unit.

9. An electronic device, characterized in that, Including a first load, a second load and the power recovery power supply circuit according to any one of claims 1 to 8. Both the first load and the second load are connected to the power supply through the power recovery power supply circuit.

10. The electronic device according to claim 9, wherein The power consumption of the first load is greater than the power consumption of the second load.

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