A dual-input circuit, control method and energy storage device thereof

Abstract

The present application relates to the field of electronic circuit technology, and discloses a dual-input circuit, a control method thereof, and an energy storage device, wherein the circuit comprises: a DC input module, an AC input module, an output module, and a multi-winding transformer comprising a first primary winding, a second primary winding, and a secondary winding; the DC input module is used to access a DC voltage and generate a first and a second enable signal and a first working signal based on the DC voltage; the DC input module is used to couple energy to the secondary winding via the first primary winding and then output it by the output module when the first enable signal and the first working signal meet the DC working conditions; the AC input module is used to access an AC voltage and generate a third enable signal and a second working signal based on the AC voltage; the AC input module is used to couple energy to the secondary winding via the second primary winding and then output it by the output module when the second, the third enable signal, and the second working signal meet the AC working conditions. The present application can reduce the circuit volume and reduce the cost.

Description

Technical Field

[0001] The present application relates to the technical field of electronic circuits, and in particular to a dual-input circuit, a control method thereof, and an energy storage device. Background Art

[0002] There are many types of power input sources in energy storage systems, such as power grid, photovoltaic, battery, etc. Therefore, power supply equipment that is compatible with multiple types of input sources has many advantages. However, due to the circuit structure design, the existing power supply equipment that is compatible with multiple types of input sources increases the cost and brings more energy loss. Summary of the invention

[0003] In view of this, the embodiments of the present application provide a dual-input circuit, a control method thereof, and an energy storage device, which can effectively solve the problems of high cost and high energy loss.

[0004] In a first aspect, an embodiment of the present application provides a dual-input circuit, comprising: a DC input module, an AC input module, a multi-winding transformer and an output module; the multi-winding transformer comprises a first primary winding, a second primary winding and a secondary winding, wherein the DC input module is connected to the first primary winding, the AC input module is connected to the second primary winding; the output module is connected to the secondary winding;

[0005] The DC input module is configured to be connected to a DC voltage and generate a first enable signal, a second enable signal and a first working signal based on the DC voltage;

[0006] The DC input module is further configured to couple energy to the secondary winding via the first primary winding and then output energy via the output module when the first enable signal and the first working signal both meet DC working conditions;

[0007] The AC input module is configured to be connected to an AC voltage and generate a third enable signal and a second working signal based on the AC voltage;

[0008] The AC input module is also used to couple energy to the secondary winding via the second primary winding and then output it through the output module when the second enable signal, the third enable signal and the second working signal all meet AC working conditions.

[0009] In some embodiments, the second enable signal has a first state and a second state;

[0010] When the first enable signal satisfies the DC working condition, the second enable signal is in a first state, and the first state is used to determine that the second enable signal does not satisfy the AC working condition;

[0011] When the first enable signal does not meet the DC working condition, the second enable signal is in a second state, and the second state is used to determine that the second enable signal meets the AC working condition.

[0012] In some embodiments, the DC input module includes a first enable signal generating unit, a first voltage conversion unit, a first controller and a first switch tube;

[0013] The DC voltage input end of the DC input module is respectively connected to the first enable signal generating unit and the first voltage conversion unit, and the DC voltage input end is grounded through the first primary winding and the first switch tube in sequence;

[0014] The first enable signal generating unit is respectively connected to the AC input module, the first voltage conversion unit and the first controller; the first controller is respectively connected to the first voltage conversion unit and the gate of the first switch tube, and the first voltage conversion unit is connected to the multi-winding transformer;

[0015] The source of the first switch tube is grounded, and the drain of the first switch tube is connected to the multi-winding transformer.

[0016] In some embodiments, the first enable signal generating unit includes a first enable signal generating sub-unit and a second enable signal generating sub-unit;

[0017] The DC voltage input terminal is respectively connected to the first enable signal generating subunit and the second enable signal generating subunit;

[0018] The first enable signal generating subunit generates the first enable signal according to the DC voltage; and the second enable signal generating subunit generates the second enable signal according to the DC voltage.

[0019] In some embodiments, the first enable signal generating unit includes a first resistor, a second resistor, a first diode, a first optocoupler, and a second optocoupler;

[0020] The DC voltage input end is respectively connected to one end of the first resistor and the negative end of the first diode; the other end of the first resistor is respectively connected to one end of the second resistor and the first controller through the light receiver of the first optical coupler, and the other end of the second resistor is grounded;

[0021] The positive terminal of the first diode is grounded through the light emitter of the first optocoupler and the light emitter of the second optocoupler in sequence; one end of the light receiver of the second optocoupler is connected to the AC input module, and the other end of the light receiver is grounded.

[0022] In some embodiments, the first voltage conversion unit includes a third resistor and a first capacitor; the multi-winding transformer includes a first primary auxiliary winding;

[0023] The DC voltage input end is respectively connected to one end of the first capacitor, the first controller and one end of the first primary auxiliary winding through the third resistor; the other end of the first capacitor and the other end of the first primary auxiliary winding are grounded respectively.

[0024] In some embodiments, the first voltage conversion unit includes a DCDC conversion subunit;

[0025] The DCDC conversion subunit is used to convert the DC voltage into a first working signal and transmit the first working signal to the first controller to provide a working voltage for the first controller.

[0026] In some embodiments, the AC input module includes a rectifier bridge, a second enable signal generating unit, a second voltage conversion unit, a second controller and a second switch tube;

[0027] The input end of the rectifier bridge is configured to be connected to an AC voltage; the output end of the rectifier bridge is respectively connected to the second enable signal generating unit and the second voltage conversion unit; the output end of the rectifier bridge is grounded through the second primary winding and the second switch tube in sequence;

[0028] The second enable signal generating unit is respectively connected to the DC input module, the second voltage conversion unit and the second controller; the second voltage conversion unit is also connected to the second controller and the multi-winding transformer, and the second controller is also connected to the control end of the second switch tube.

[0029] In some embodiments, the second enable signal generating unit includes a fourth resistor and a fifth resistor;

[0030] The output end of the rectifier bridge is respectively connected to one end of the fifth resistor, the second controller and the DC input module through the fourth resistor; the other end of the fifth resistor is grounded.

[0031] In some embodiments, the second voltage conversion unit includes a sixth resistor and a second capacitor; the multi-winding transformer also includes a second primary auxiliary winding;

[0032] The output end of the rectifier bridge is respectively connected to one end of the second capacitor, the second controller and one end of the second primary auxiliary winding through the sixth resistor; the other end of the second capacitor and the other end of the second primary auxiliary winding are grounded respectively.

[0033] In a second aspect, an embodiment of the present application provides a control method for a dual-input circuit, which is applied to the above-mentioned dual-input circuit, and the method includes:

[0034] Acquire a DC voltage and an AC voltage, and output a first enable signal, a second enable signal, and a first working signal based on the DC voltage; and output a third enable signal and a second working signal based on the AC voltage;

[0035] When the first enable signal and the first working signal meet the DC working condition, controlling the DC input module to input energy to the output module, and transmitting the second enable signal to the AC input module to disable the AC input module;

[0036] When the second enable signal, the third enable signal and the second working signal meet the AC working condition, the AC input module is controlled to input energy to the output module.

[0037] In some embodiments, the DC input module includes a first controller, and the AC input module includes a second controller;

[0038] When the first enable signal is greater than a first preset voltage, it is determined that the first enable signal meets the DC working condition;

[0039] When the first enable signal satisfies the DC working condition, the second enable signal is in a first state, and the first state is used to determine that the second enable signal does not satisfy the AC working condition;

[0040] When the first enable signal does not meet the DC working condition, the second enable signal is in a second state, and the second state is used to determine that the second enable signal meets the AC working condition;

[0041] When the third enable signal is greater than the second preset voltage, it is determined that the third enable signal meets the AC working condition;

[0042] When the first working signal is greater than the working voltage of the first controller, it is determined that the first working signal meets the DC working condition;

[0043] When the second working signal is greater than the working voltage of the second controller, it is determined that the second working signal meets the AC working condition.

[0044] In some embodiments, the DC input module includes a first voltage conversion unit, a first controller and a first switch tube;

[0045] The controlling the DC input module to transfer energy to the output module comprises:

[0046] The first voltage conversion unit is controlled to output the first working signal to the first controller to provide a working voltage to the first controller, so that the first controller controls the first switch tube to be turned on and off.

[0047] In some embodiments, the multi-winding transformer further includes a first primary auxiliary winding; and further includes:

[0048] When the first switch tube is turned on, the first primary winding is energized;

[0049] When the first switch tube is turned off, the first primary winding transmits energy to the secondary winding and the first primary auxiliary winding through electromagnetic coupling; so that the first primary auxiliary winding transmits electric energy to the first controller to provide a working voltage for the first controller, and the secondary winding transmits electric energy to the output module;

[0050] Repeat the steps of turning the first switch tube on and off to continuously supply energy to the output module.

[0051] In some embodiments, the AC input module includes a rectifier bridge, a second enable signal generating unit, a second voltage conversion unit, a second controller and a second switch tube;

[0052] The controlling the AC input module to transfer energy to the output module comprises:

[0053] The second voltage conversion unit is controlled to output the second working signal to the second controller to provide a working voltage to the second controller, so that the second controller controls the second switch tube to be turned on and off.

[0054] In some embodiments, the multi-winding transformer further includes a second primary auxiliary winding; and further includes:

[0055] When the second switch tube is turned on, the second primary winding is energized;

[0056] When the second switch tube is turned off, the second primary winding transmits energy to the secondary winding and the second primary auxiliary winding through electromagnetic coupling; so that the second primary auxiliary winding transmits electric energy to the second controller to provide a working voltage for the second controller, and the secondary winding transmits electric energy to the output module;

[0057] Repeat the steps of turning the second switch tube on and off to continuously supply energy to the output module.

[0058] In some embodiments, the DC input module includes a first switch tube; the AC input module includes a second switch tube; the multi-winding transformer also includes a first primary auxiliary winding and a second primary auxiliary winding;

[0059] When the DC input module is in working state; when the first switch tube is turned on, the DC input module charges the first primary winding; when the first switch tube is turned off, the first primary winding charges the first primary auxiliary winding, the second primary auxiliary winding and the secondary winding;

[0060] When the AC input module is in a working state; when the second switch tube is turned on, the AC input module charges the second primary winding; when the second switch tube is turned off, the second primary winding charges the first primary auxiliary winding, the second primary auxiliary winding and the secondary winding.

[0061] In a third aspect, an embodiment of the present application provides an energy storage device, which includes the above-mentioned dual-input circuit, and the dual-input circuit includes a processor and a memory, the memory stores a computer program, and the processor is used to execute the computer program to implement the above-mentioned dual-input circuit control method.

[0062] The embodiments of the present application have the following beneficial effects:

[0063] The present application proposes a dual-input circuit, comprising: a DC input module, an AC input module, a multi-winding transformer and an output module; the multi-winding transformer comprises a first primary winding, a second primary winding and a secondary winding, wherein the DC input module is connected to the first primary winding, the AC input module is connected to the second primary winding; the output module is connected to the secondary winding; the DC input module is configured to be connected to a DC voltage, and to generate a first enable signal, a second enable signal and a first working signal based on the DC voltage; the DC input module is also configured to couple energy to the secondary winding via the first primary winding and then output it by the output module when the first enable signal and the first working signal both meet the DC working conditions; the AC input module is configured to be connected to an AC voltage, and to generate a third enable signal and a second working signal based on the AC voltage; the AC input module is also configured to couple energy to the secondary winding via the second primary winding and then output it by the output module when the second enable signal, the third enable signal and the second working signal all meet the AC working conditions. In the present application, the AC input module and the DC input module are connected in parallel through electromagnetic coupling. The entire circuit structure is simple, which effectively reduces the volume of the entire circuit and reduces the cost, and can also reduce power loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0065] Figure 1 An application scenario diagram of the dual-input circuit proposed in an embodiment of the present application is shown;

[0066] Figure 2 A first structural schematic diagram of a dual-input circuit proposed in an embodiment of the present application is shown;

[0067] Figure 3 A second structural schematic diagram of a dual-input circuit proposed in an embodiment of the present application is shown;

[0068] Figure 4 A third structural schematic diagram of a dual-input circuit proposed in an embodiment of the present application is shown;

[0069] Figure 5 A schematic flow chart of a control method for a dual-input circuit proposed in an embodiment of the present application is shown.

[0070] Description of the main component symbols: 100-dual input circuit; 200-DC source; 300-AC source; 400-load; 110-DC input module; 120-AC input module; 130-multi-winding transformer; 140-output module; 111-first enable signal generating unit; 112-first voltage conversion unit; 121-rectifier bridge; 122-second enable signal generating unit; 123-second voltage conversion unit; IC1-first controller; IC2-second controller; Q1-first switch tube; Q2-second switch tube; U1-first optocoupler; U2-second optocoupler; C1-first capacitor; C2-second capacitor; C3-third capacitor; R1-first resistor; R2-second resistor; R3-third resistor; R4-fourth resistor; R5-fifth resistor; R6-sixth resistor; RL-current limiting resistor; N1-first primary winding; N2-second primary winding; N3-secondary winding; N4-first primary auxiliary winding; N5-second primary auxiliary winding; D1-first diode; D2-second diode; D3-third diode; D4-fourth diode; D5-fifth diode; D6-sixth diode. DETAILED DESCRIPTION

[0071] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0072] The components of the embodiments of the present application generally described and shown in the drawings herein may be arranged and designed in various configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0073] Hereinafter, the terms "including", "having" and their cognates that can be used in various embodiments of the present application are intended only to indicate specific features, numbers, steps, operations, elements, components or a combination of the foregoing items, and should not be understood as first excluding the existence of one or more other features, numbers, steps, operations, elements, components or a combination of the foregoing items or increasing the possibility of one or more features, numbers, steps, operations, elements, components or a combination of the foregoing items. In addition, the terms "first", "second", "third" and the like are only used to distinguish descriptions and cannot be understood as indicating or implying relative importance.

[0074] Unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meanings as those generally understood by those skilled in the art to which the various embodiments of the present application belong. The terms (such as those defined in generally used dictionaries) will be interpreted as having the same meanings as the contextual meanings in the relevant technical field and will not be interpreted as having idealized meanings or overly formal meanings unless clearly defined in the various embodiments of the present application.

[0075] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0076] Generally, the circuit design of a power supply device that is compatible with multiple types of input sources usually uses more electronic components, which not only increases the cost, but also causes more losses in the energy transmission process. In addition, the circuit control method of the power supply device usually uses a controller to control the switching operation between multiple types of input sources, so that when the controller is damaged or the startup fails, the entire system will be paralyzed.

[0077] Therefore, in order to solve the above problems, the present application proposes a dual-input circuit and a control method thereof.

[0078] Figure 1 FIG. 1 shows an application scenario diagram of a dual-input circuit 100 provided in an embodiment of the present application. Figure 1As shown, the dual-input circuit 100 includes two input terminals and an output terminal, the two input terminals are respectively connected to a DC source 200 and an AC source 300, and the output terminal is connected to a load 400. The dual-input circuit 100 supplies power to the load 400 through the DC source 200 and the AC source 300. The DC source 200 mentioned above can be a battery, a photovoltaic panel, a DC generator, etc.; the AC source 300 can be a power grid, an AC generator, etc., which are not limited here.

[0079] The dual-input circuit 100 provided in the present application can be applied to electronic devices such as energy storage devices. The energy storage device can be an electronic device with energy storage function, including self-moving devices such as automotive equipment, lawn mowing equipment, sweeping equipment, and cruise equipment, and also includes mobile energy storage devices, household energy storage devices and other energy storage devices, or can also be applied to electrical equipment such as refrigerators, air conditioners, washing machines, or other electronic devices including batteries. The energy storage device may also include a client device, which includes but is not limited to any electronic product that can interact with the customer through a keyboard, mouse, remote control, touchpad or voice control device, such as a personal computer, tablet computer, smart phone, digital camera, etc.

[0080] It should be noted that the energy storage device is only an example, and other existing or future electronic products that are suitable for the present application should also be included in the protection scope of the present application and included here by reference.

[0081] The following will be combined Figures 2 to 4 The structure of the dual-input circuit 100 provided in the present application is illustrated by way of example.

[0082] In some possible implementations, such as Figure 2 A structural schematic diagram of a dual-input circuit 100 provided in an embodiment of the present application is shown. The dual-input circuit 100 includes: a DC input module 110, an AC input module 120, a multi-winding transformer 130 and an output module 140; the multi-winding transformer 130 includes a first primary winding (not shown), a second primary winding (not shown) and a secondary winding (not shown), wherein the DC input module 110 is connected to the first primary winding, the AC input module 120 is connected to the second primary winding, and the output module 140 is connected to the secondary winding.

[0083] In some feasible implementations, during the actual operation of the dual-input circuit 100, various situations may occur, for example, only the DC source 200 connected to the DC input module 110 has current, only the AC source 300 connected to the AC input module 120 has current, and both the DC source 200 connected to the DC input module 110 and the AC source 300 connected to the AC input module 120 have current. In order to continuously supply power to the load 400, the AC source 300 connected to the AC input module 120 can be connected to the power grid to provide AC power in real time. When both the DC input module 110 and the AC input module 120 can work, the DC input module 110 can be selected to be used first to supply power to the load 400, in order to better use the DC source 200 of the DC input module 110, which not only saves power but also is more stable.

[0084] In some feasible implementations, considering that even if the DC source 200 and the AC source 300 generate voltage, the provided voltage may not necessarily meet the working requirements of the load 400, it is also necessary to determine whether the voltage provided by the DC source 200 and the AC source 300 meets the requirements to determine whether the DC input module 110 and the AC input module 120 are started.

[0085] In some feasible implementations, the DC input module 110 of the dual-input circuit 100 is connected to a DC power supply so as to be configured to access a DC voltage, and then generate a first enable signal, a second enable signal, and a first working signal according to the DC voltage according to the circuit structure. When the first enable signal and the first working signal both meet the DC working conditions, the DC input module 110 couples the energy to the secondary winding through the first primary winding and then outputs it through the output module 140 to power the load 400 connected to the output module 140.

[0086] The AC input module 120 is connected to an AC power source so as to be configured to access an AC voltage, and then generates a third enable signal and a second working signal based on the AC voltage according to the circuit structure. The AC input module 120 also obtains a second enable signal from the DC input module 110. When the second enable signal, the third enable signal and the second working signal all meet the AC working conditions, the AC input module 120 couples the energy to the secondary winding N3 through the second primary winding and then outputs it through the output module 140.

[0087] In this embodiment, the AC input module 120 and the DC input module 110 are connected in parallel via electromagnetic coupling. The entire circuit structure is simple, which effectively reduces the volume of the entire circuit and reduces the cost. Due to the electromagnetic coupling parallel structure of the DC input module 110 and the AC input module 120, when any input module is working, no more components will consume electrical energy, thereby reducing power loss.

[0088] In some feasible implementations, the second enable signal has a first state and a second state. Optionally, the first state is a low level state, and the second state is a suspended state (i.e., no level is generated). Of course, according to different circuit structures, the first state and the second state can be set arbitrarily, and there is no limitation here.

[0089] In this embodiment, the switching of the working state between the DC input module 110 and the AC input module 120 is not controlled by a controller, such as a digital signal processor (DSP), but the circuit structure automatically generates the corresponding first enable signal and second enable signal according to the input DC voltage, and then transmits the second enable signal to the AC input module 120 to control the operation or prohibit (stop working) of the AC input module 120. Therefore, when the first enable signal meets the DC working condition, the second enable signal is in the first state, which means that the second enable signal does not meet the AC working condition. When the first enable signal does not meet the DC working condition, the second enable signal is in the second state, which means that the second enable signal meets the AC working condition.

[0090] In some possible implementations, such as Figure 3 As shown, the DC input module 110 includes a first enable signal generating unit 111, a first voltage conversion unit 112, a first controller IC1 and a first switch tube Q1. The DC voltage input terminal of the DC input module 110 is connected to the first enable signal generating unit 111 and the first voltage conversion unit 112 respectively, and the DC voltage input terminal is grounded through the first primary winding N1 and the first switch tube Q1 in sequence. The first enable signal generating unit 111 is connected to the AC input module 120, the first voltage conversion unit 112 and the first controller IC1 respectively; the first controller IC1 is connected to the gate of the first voltage conversion unit 112 and the first switch tube Q1 respectively, and the first voltage conversion unit 112 is connected to the multi-winding transformer 130. The source of the first switch tube Q1 is grounded, and the drain of the first switch tube Q1 is connected to the multi-winding transformer 130.

[0091] It can be understood that the first voltage conversion unit 112 outputs the first working signal to provide a working voltage for the first controller IC1. When the first controller IC1 is working, the first switch tube Q1 is controlled to be turned on and off by judging the first enable signal to charge and discharge the first primary winding N1.

[0092] In some feasible implementations, the first enable signal generating unit 111 generates a first enable signal and a second enable signal based on a DC voltage, transmits the first enable signal to the first controller IC1, and transmits the second enable signal to the AC input module 120. The first voltage conversion unit 112 generates a first working signal based on a DC voltage and transmits it to the first controller IC1.

[0093] In some feasible implementations, the first enable signal generating unit 111 includes a first enable signal generating subunit and a second enable signal generating subunit. The DC voltage input terminal is connected to the first enable signal generating subunit and the second enable signal generating subunit respectively. The first enable signal generating subunit generates a first enable signal according to the DC voltage; the second enable signal generating subunit generates a second enable signal according to the DC voltage.

[0094] It should be noted that the first enable signal generating unit 111 is used to generate a first enable signal based on the DC voltage and transmitted to the first controller IC1, and a second enable signal transmitted to the AC input module 120; the first voltage conversion unit 112 is used to generate a first working signal based on the DC voltage and transmitted to the first controller IC1.

[0095] In some possible implementations, such as Figure 4 As shown, the first enable signal generating unit 111 includes a first resistor R1, a second resistor R2, a first diode D1, a first optocoupler U1 and a second optocoupler U2. The DC voltage input terminal is respectively connected to one end of the first resistor R1 and the negative end of the first diode D1. The other end of the first resistor R1 is respectively connected to one end of the second resistor R2 and the first controller IC1 through the light receiver of the first optocoupler U1, and the other end of the second resistor R2 is grounded. The positive end of the first diode D1 is grounded through the light emitter of the first optocoupler U1 and the light emitter of the second optocoupler U2 in turn; one end of the light receiver of the second optocoupler U2 is connected to the AC input module 120, and the other end of the light receiver is grounded.

[0096] It can be understood that when the DC voltage satisfies the conduction voltage of the first diode D1, the first diode D1 is turned on to turn on the first optocoupler U1 and the second optocoupler U2. After the light receiver of the first optocoupler U1 is turned on, the first resistor R1 and the second resistor R2 divide the DC voltage to generate a first enable signal (such as Figure 4 After the light receiver of the second optocoupler U2 is turned on, the suspended second enable signal (such as Figure 4 The Fault2) output terminal in is grounded to generate a second enable signal (ie, a low level).

[0097] Optionally, according to the characteristics of the diode type, the voltage regulator diode has a reverse characteristic, that is, it works stably within the breakdown voltage range. Therefore, the first diode D1 can be a voltage regulator diode.

[0098] In some feasible implementations, the first enable signal generating unit 111 further includes a current limiting resistor RL, which is connected in series between the DC voltage input terminal and the first diode D1 for current limiting.

[0099] In some feasible implementations, the second resistor R2 is further connected in parallel with a voltage stabilizing diode and a resistor, so that the generated first enable signal is output stably.

[0100] In some possible implementations, such as Figure 4 As shown, the first voltage conversion unit 112 includes a third resistor R3 and a first capacitor C1. The multi-winding transformer 130 includes a first primary auxiliary winding N4. The DC voltage input terminal is connected to one end of the first capacitor C1, the first controller IC1 and one end of the first primary auxiliary winding N4 through the third resistor R3. The other end of the first capacitor C1 and the other end of the first primary auxiliary winding N4 are grounded respectively.

[0101] It is understandable that, in order to reduce costs, part of the energy consumption of the first controller IC1 in this embodiment is provided by the first voltage conversion unit 112, and the other part is provided by the first primary auxiliary winding N4. That is, the starting voltage of the first controller IC1 is provided by the first voltage conversion unit 112. When the first controller IC1 is started and the first primary auxiliary winding N4 releases energy, the first primary auxiliary winding N4 provides the first controller IC1 with a working voltage. When the DC voltage is connected, the first capacitor C1 starts to charge. As the positive terminal voltage of the first capacitor C1 rises to the starting voltage of the first controller IC1, the first controller IC1 starts to work, and then determines whether to turn on the first switch tube Q1 according to the first enable signal. Among them, the third resistor R3 is used for current limiting, and the positive terminal voltage of the first capacitor C1 is used as the first working signal.

[0102] In some feasible implementations, the first voltage conversion unit 112 includes a DCDC conversion subunit that converts a DC voltage into a first working signal and transmits the first working signal to the first controller IC1 to provide a working voltage for the first controller IC1.

[0103] It is understandable that the function of the first voltage conversion unit 112 is to provide an operating voltage to the first controller IC1. Therefore, the first voltage conversion unit 112 may also be a DCDC conversion subunit for converting a DC voltage into an operating voltage of the first controller IC1.

[0104] In some feasible implementations, the first voltage conversion unit 112 further includes a filter capacitor and a voltage regulator diode, one end of the filter capacitor is connected to the DC voltage terminal, and the other end is grounded. Both ends of the voltage regulator diode are connected in parallel to the first capacitor C1 to stabilize the voltage across the first capacitor C1.

[0105] In some possible implementations, such as Figure 4As shown, the AC input module 120 includes a rectifier bridge 121, a second enable signal generating unit 122, a second voltage conversion unit 123, a second controller IC2 and a second switch tube Q2. The input end of the rectifier bridge 121 is configured to be connected to an AC voltage. The output ends of the rectifier bridge 121 are respectively connected to the second enable signal generating unit 122 and the second voltage conversion unit 123. The output ends of the rectifier bridge 121 are grounded through the second primary winding N2 and the second switch tube Q2 in sequence. The second enable signal generating unit 122 is respectively connected to the DC input module 110, the second voltage conversion unit 123 and the second controller IC2; the second voltage conversion unit 123 is also connected to the second controller IC2 and the multi-winding transformer 130, and the second controller IC2 is also connected to the control end of the second switch tube Q2.

[0106] It is understandable that the second enable signal generating unit 122 is used to generate a second enable signal transmitted to the second controller IC2 based on the rectified voltage output by the rectifier bridge 121. The second enable signal generating unit 122 is used to generate a second working signal transmitted to the second controller IC2 based on the rectified voltage.

[0107] In some possible implementations, such as Figure 4 As shown, the second enable signal generating unit 122 includes a fourth resistor R4 and a fifth resistor R5. The output end of the rectifier bridge 121 is connected to one end of the fifth resistor R5, the second controller IC2 and the DC input module 110 through the fourth resistor R4; the other end of the fifth resistor R5 is grounded.

[0108] It is understandable that the fourth resistor R4 and the fifth resistor R5 are connected in series to divide the converted voltage of the AC voltage to output the third enable signal to the second controller IC2.

[0109] In some feasible implementations, the fifth resistor R5 is further connected in parallel with a voltage stabilizing diode and a resistor, so that the generated third enable signal is output stably.

[0110] In some possible implementations, such as Figure 4 As shown, the second voltage conversion unit 123 includes a sixth resistor R6 and a second capacitor C2; the multi-winding transformer 130 also includes a second primary auxiliary winding N5;

[0111] The output end of the rectifier bridge 121 is respectively connected to one end of the second capacitor C2, the second controller IC2 and one end of the second primary auxiliary winding N5 through the sixth resistor R6; the other end of the second capacitor C2 and the other end of the second primary auxiliary winding N5 are grounded respectively.

[0112] It is understandable that, in order to reduce costs, part of the energy consumption of the second controller IC2 in this embodiment is provided by the second voltage conversion unit 123, and the other part is provided by the second primary auxiliary winding N5. That is, the starting voltage of the second controller IC2 is provided by the second voltage conversion unit 123. When the second controller IC2 is started and the second primary auxiliary winding N5 releases energy, the second primary auxiliary winding N5 provides the working voltage for the second controller IC2. When the AC voltage is connected, the second capacitor C2 starts to charge. As the positive terminal voltage of the second capacitor C2 rises to the starting voltage of the second controller IC2, the second controller IC2 starts to work, and then determines whether to turn on the second switch tube Q2 according to the second enable signal. Among them, the sixth resistor R6 is used for current limiting, and the positive terminal voltage of the second capacitor C2 is used as the second working signal.

[0113] In some feasible implementations, the second voltage conversion unit 123 further includes a filter capacitor and a voltage regulator diode, one end of the filter capacitor is connected to the output end of the rectifier bridge 121, and the other end is grounded. Both ends of the voltage regulator diode are connected in parallel to the second capacitor C2 to stabilize the voltage across the second capacitor C2.

[0114] In some feasible implementations, the DC input module includes a first enable signal generating unit 111, and the AC input module 120 includes a second enable signal generating unit 122 and a second controller IC2. The first enable signal generating unit 111 and the second enable signal generating unit 122 are connected in parallel to the second controller IC2. The second enable signal output by the first enable signal generating unit 111 affects the third enable signal output by the second enable signal generating unit 122. When the second enable signal is at a low level, the third enable signal is pulled low, so that the signal input to the second controller IC2 is a low level signal, thereby prohibiting the AC input module 120 from working. When the second enable signal is an empty signal, the third enable signal is not affected, so that the signal input to the second controller IC2 is the third enable signal, and then based on the third enable signal, it is determined whether to start the AC input module 120.

[0115] The present application also proposes a control method of the dual-input circuit 100, such as Figure 5 As shown, the method applied to the dual-input circuit 100 includes:

[0116] Step S510, obtaining a DC voltage and an AC voltage, outputting a first enable signal, a second enable signal, and a first working signal based on the DC voltage, and outputting a third enable signal and a second working signal based on the AC voltage.

[0117] Step S520 , when the first enable signal and the first working signal meet the DC working condition, control the DC input module 110 to input energy to the output module 140 , and transmit the second enable signal to the AC input module 120 to disable the AC input module 120 .

[0118] Step S530 : When the second enable signal, the third enable signal and the second working signal meet the AC working condition, the AC input module 120 is controlled to input energy to the output module 140 .

[0119] It is understandable that the control method in this embodiment can refer to the control method in the above-mentioned dual-input circuit 100, which will not be repeated here. However, it should be noted that since the first enable signal and the second enable signal are both generated based on the DC voltage, when the DC voltage is greater than a certain value, the first enable signal satisfies the DC working condition. At this time, the second enable signal will disable the AC input module 120 and stop it from working. In addition, the state of the first enable signal corresponds to the state of the second enable signal, that is, when the first enable signal satisfies the DC working condition, the second enable signal does not meet the AC working condition; when the first enable signal does not meet the DC working condition, the second enable signal meets the AC working condition.

[0120] In some feasible implementations, when the first enable signal is greater than a first preset voltage, it is determined that the first enable signal meets a DC working condition.

[0121] When the first enable signal meets the DC working condition and the second enable signal is in the first state, it is determined that the second enable signal does not meet the AC working condition.

[0122] When the first enable signal does not meet the DC working condition, the second enable signal is in the second state, and it is determined that the second enable signal meets the AC working condition.

[0123] When the third enable signal is greater than the second preset voltage, it is determined that the third enable signal meets the AC working condition.

[0124] When the first working signal is greater than the working voltage of the first controller IC1 , it is determined that the first working signal meets the DC working condition.

[0125] When the second working signal is greater than the working voltage of the second controller IC2, it is determined that the second working signal meets the AC working condition.

[0126] It is understandable that the first preset voltage and the second preset voltage can be set according to the circuit structure of the application scenario, and there is no limitation here.

[0127] In some feasible implementations, the DC input module 110 includes a first voltage conversion unit 112 , a first controller IC1 , and a first switch tube Q1 .

[0128] Controlling the DC input module 110 to input energy to the output module 140 includes:

[0129] The first voltage conversion unit 112 is controlled to output a first working signal to the first controller IC1 to provide a working voltage to the first controller IC1, so that the first controller IC1 controls the first switch tube Q1 to be turned on and off.

[0130] In some feasible implementations, the multi-winding transformer 130 further includes a first primary auxiliary winding N4. The method further includes:

[0131] When the first switch tube Q1 is turned on, the first primary winding N1 is energized.

[0132] When the first switch tube Q1 is turned off, the first primary winding N1 transmits energy to the secondary winding N3 and the first primary auxiliary winding N4 through electromagnetic coupling, so that the first primary auxiliary winding N4 transmits electric energy to the first controller IC1 to provide an operating voltage for the first controller IC1, and the secondary winding N3 transmits electric energy to the output module 140.

[0133] The steps of turning on and off the first switch tube Q1 are repeated to continuously supply energy to the output module 140 .

[0134] It is understandable that when the first controller IC1 just starts working and the first enable signal meets the DC working conditions, the first switch tube Q1 is controlled to be turned on, and the first primary winding N1 is charged; since the first controller IC1 periodically turns on and off the first switch tube Q1, when the first switch tube Q1 is turned off, the first primary winding N1 releases energy to the secondary winding N3 and the first primary auxiliary winding N4 through magnetic induction coupling. When the first primary winding N1 releases all the energy, that is, the secondary winding N3 and the first primary auxiliary winding N4 are fully charged, at this time, the first switch tube Q1 is continued to be turned on to charge the first primary winding N1 again. In the process of the second charging of the first primary winding N1, the secondary winding N3 discharges energy to the output module 140 and the first primary auxiliary winding N4 to power the load 400 first controller IC1. At the same time, the first primary auxiliary winding N4 discharges energy to the first controller IC1 and the first capacitor C1 to provide the first controller IC1 with a working voltage. The above steps are repeated to continuously supply power to the load 400 .

[0135] Optionally, the full charging time of the first primary winding N1 is calculated in advance, and the closing time of the first switch tube Q1 is controlled according to the full charging time, and when the full charging time is reached, the first switch tube Q1 is controlled to be disconnected. The full discharge time of the secondary winding N3 is calculated in advance, and the disconnection time of the first switch tube Q1 is controlled according to the full discharge time, and when the full discharge time is reached, the first switch tube Q1 is controlled to be turned on.

[0136] In some feasible implementations, in order to ensure that the secondary winding N3 and the first primary auxiliary winding N4 are not affected when the first primary auxiliary winding N4 is charged, therefore, Figure 4 As shown, the second diode D2 and the third diode D3 are connected in series at the same end of the first primary auxiliary winding N4 and the secondary winding N3, respectively. Similarly, in order to avoid affecting the first primary winding N1 when the secondary winding N3 and the first primary auxiliary winding N4 discharge, so as to fully utilize the energy, a fourth diode D4 is also connected in series at one end of the first primary winding N1.

[0137] In some feasible implementations, the AC input module 120 includes a rectifier bridge 121 , a second enable signal generating unit 122 , a second voltage conversion unit 123 , a second controller IC2 , and a second switch tube Q2 .

[0138] Controlling the AC input module 120 to input energy to the output module 140 includes:

[0139] The second voltage conversion unit 123 is controlled to output a second working signal to the second controller IC2 to provide a working voltage to the second controller IC2, so that the second controller IC2 controls the second switch tube Q2 to be turned on and off.

[0140] In some feasible implementations, the multi-winding transformer 130 further includes a second primary auxiliary winding N5. The method further includes:

[0141] When the second switch tube Q2 is turned on, the second primary winding N2 is energized.

[0142] When the second switch tube Q2 is turned off, the second primary winding N2 transmits energy to the secondary winding N3 and the second primary auxiliary winding N5 through electromagnetic coupling; so that the second primary auxiliary winding N5 transmits electrical energy to the second controller IC2 to provide an operating voltage for the second controller IC2, and the secondary winding N3 transmits electrical energy to the output module 140.

[0143] The steps of turning on and off the second switch tube Q2 are repeated to continuously supply energy to the output module 140 .

[0144] It is understandable that when the second controller IC2 just starts working, and the second enable signal and the third enable signal meet the AC working conditions, the second switch tube Q2 is controlled to be turned on, and the second primary winding N2 is charged; since the second controller IC2 periodically turns on and off the second switch tube Q2, when the second switch tube Q2 is turned off, the second primary winding N2 releases energy to the secondary winding N3 and the second primary auxiliary winding N5 through magnetic induction coupling. When the second primary winding N2 releases the energy, that is, the secondary winding N3 and the second primary auxiliary winding N5 are fully charged, at this time, the second switch tube Q2 is continued to be turned on to charge the second primary winding N2 again. In the process of the second primary winding N2 being charged for the second time, the secondary winding N3 releases energy to the output module 140 and the second primary auxiliary winding N5 to power the load 400 second controller IC2. At the same time, the second primary auxiliary winding N5 discharges energy to the second controller IC2 and the second capacitor C2 to provide an operating voltage for the second controller IC2. The above steps are repeated to continuously supply power to the load 400.

[0145] Optionally, the full charge time of the second primary winding N2 is calculated in advance, and the closing time of the second switch tube Q2 is controlled according to the full charge time, and when the full charge time is reached, the second switch tube Q2 is controlled to be turned off. The full discharge time of the secondary winding N3 is calculated in advance, and the disconnection time of the second switch tube Q2 is controlled according to the full discharge time, and when the full discharge time is reached, the second switch tube Q2 is controlled to be turned on.

[0146] In some feasible implementations, in order to ensure that the secondary winding N3 and the second primary auxiliary winding N5 are not affected when the second primary auxiliary winding N5 is charged, therefore, Figure 4 As shown, the third diode D3 and the fifth diode D5 are connected in series at the same end of the secondary winding N3 and the second primary auxiliary winding N5, respectively. Similarly, in order to prevent the discharge of the secondary winding N3 and the second primary auxiliary winding N5 from affecting the second primary winding N2, a sixth diode D6 is also connected in series at one end of the second primary winding N2.

[0147] In some feasible implementations, the DC input module 110 includes a first switch tube Q1. The AC input module 120 includes a second switch tube Q2. The multi-winding transformer 130 also includes a first primary auxiliary winding N4 and a second primary auxiliary winding N5.

[0148] When the DC input module 110 is in working state; when the first switch tube Q1 is turned on, the DC input module 110 charges the first primary winding N1; when the first switch tube Q1 is turned off, the first primary winding N1 charges the first primary auxiliary winding N4, the second primary auxiliary winding N5 and the secondary winding N3.

[0149] When the AC input module 120 is in working state; when the second switch tube Q2 is turned on, the AC input module 120 charges the second primary winding N2; when the second switch tube Q2 is turned off, the second primary winding N2 charges the first primary auxiliary winding N4, the second primary auxiliary winding N5 and the secondary winding N3.

[0150] It is understandable that if Figure 4 As shown, when the DC input module 110 is working, when the first primary winding N1 releases energy, the first primary auxiliary winding N4, the second primary auxiliary winding N5 and the secondary winding N3 are electromagnetically coupled to release energy at the same time, that is, the first primary auxiliary winding N4, the second primary auxiliary winding N5 and the secondary winding N3 are electromagnetically coupled to charge energy. When the AC input module 120 is working, when the second primary winding N2 releases energy, the first primary auxiliary winding N4, the second primary auxiliary winding N5 and the secondary winding N3 are electromagnetically coupled to release energy at the same time, that is, the first primary auxiliary winding N4, the second primary auxiliary winding N5 and the secondary winding N3 are electromagnetically coupled to charge energy.

[0151] When any input module is working, when the secondary winding N3 releases energy, the first primary auxiliary winding N4 and the second primary auxiliary winding N5 will also release energy at the same time, that is, the first primary auxiliary winding N4 and the second primary auxiliary winding N5 are electromagnetically coupled and charged.

[0152] Such a working mode will ensure that when any input module is working, both the first controller IC1 and the second controller IC2 will work normally.

[0153] In some feasible implementations, the output module 140 includes a third capacitor C3. When the secondary winding N3 is discharged, the third capacitor C3 is charged and the load 400 is powered. When the secondary winding N3 is charged, the third capacitor C3 discharges the load 400, so that the load 400 is continuously powered.

[0154] In addition, the first controller IC1 and the second controller IC2 may be power management integrated circuits, ie, Power Management Integrated Circuit (PMIC).

[0155] The present application proposes a dual-input circuit 100, in which an AC input module 120 and a DC input module 110 are connected in parallel through electromagnetic coupling. The entire circuit structure is simple, which effectively reduces the volume of the entire circuit and reduces the cost. It can also reduce power loss and is beneficial to the spatial layout of the printed circuit board (PCB). In addition, the present application does not control the switching operation between multiple types of input sources through a DSP controller, thereby avoiding the entire system from being paralyzed when the controller is damaged or the startup fails. At the same time, because there is no need for the control of a controller such as a DSP, the use of IO ports is reduced.

[0156] The present application also proposes an energy storage device, which includes the above-mentioned dual-input circuit 100. The dual-input circuit 100 includes a processor and a memory. The memory stores a computer program, and the processor is used to execute the computer program to implement the control method of the above-mentioned dual-input circuit 100.

[0157] It can be understood that the device of this embodiment corresponds to the control method of the dual-input circuit 100 of the above embodiment, and the options in the above embodiment are also applicable to this embodiment, so they will not be described repeatedly here.

[0158] Among them, the processor can be an integrated circuit chip with signal processing capabilities. The processor can be a general-purpose processor, including a central processing unit (CPU), a graphics processing unit (GPU) and a network processor (NP), a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or at least one of other programmable logic devices, discrete gates or transistor logic devices, and discrete hardware components. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc., which can implement or execute the disclosed methods, steps and logic block diagrams in the embodiments of the present application.

[0159] The memory may be, but is not limited to, a random access memory (RAM), a read only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), etc. The memory is used to store a computer program, and the processor may execute the computer program accordingly after receiving an execution instruction.

[0160] The present application also provides a computer-readable storage medium for storing the computer program used in the above energy storage device. For example, the computer-readable storage medium may include, but is not limited to, various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0161] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowcharts and structure diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present application. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the module, a program segment or a part of a code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in an alternative implementation, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the structure diagram and / or the flow diagram, and the combination of boxes in the structure diagram and / or the flow diagram, can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0162] In addition, the functional modules or units in the various embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

[0163] If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a smart phone, a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the various embodiments of the present application.

[0164] The above description is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application.

Claims

1. A dual input circuit, characterized in that: include: A DC input module, an AC input module, a multi-winding transformer and an output module; the multi-winding transformer comprises a first primary winding, a second primary winding and a secondary winding, wherein the DC input module is connected to the first primary winding, the AC input module is connected to the second primary winding; the output module is connected to the secondary winding; The DC input module is configured to be connected to a DC voltage and generate a first enable signal, a second enable signal and a first working signal based on the DC voltage; The DC input module is further configured to couple energy to the secondary winding via the first primary winding and then output energy via the output module when the first enable signal and the first working signal both meet DC working conditions; The AC input module is configured to be connected to an AC voltage and generate a third enable signal and a second working signal based on the AC voltage; The AC input module is also used to couple energy to the secondary winding via the second primary winding and then output it through the output module when the second enable signal, the third enable signal and the second working signal all meet AC working conditions.

2. The dual input circuit according to claim 1, characterized in that: The second enable signal has a first state and a second state; When the first enable signal satisfies the DC working condition, the second enable signal is in a first state, and the first state is used to determine that the second enable signal does not satisfy the AC working condition; When the first enable signal does not meet the DC working condition, the second enable signal is in a second state, and the second state is used to determine that the second enable signal meets the AC working condition.

3. The dual input circuit according to claim 1, characterized in that: The DC input module includes a first enable signal generating unit, a first voltage conversion unit, a first controller and a first switch tube; The DC voltage input end of the DC input module is respectively connected to the first enable signal generating unit and the first voltage conversion unit, and the DC voltage input end is grounded through the first primary winding and the first switch tube in sequence; The first enable signal generating unit is respectively connected to the AC input module, the first voltage conversion unit and the first controller; the first controller is respectively connected to the first voltage conversion unit and the gate of the first switch tube, and the first voltage conversion unit is connected to the multi-winding transformer; The source of the first switch tube is grounded, and the drain of the first switch tube is connected to the multi-winding transformer.

4. The dual input circuit according to claim 3, characterized in that: The first enable signal generating unit includes a first enable signal generating sub-unit and a second enable signal generating sub-unit; The DC voltage input terminal is respectively connected to the first enable signal generating subunit and the second enable signal generating subunit; The first enable signal generating subunit generates the first enable signal according to the DC voltage; The second enable signal generating subunit generates the second enable signal according to the DC voltage.

5. The dual input circuit according to claim 3, characterized in that: The first enable signal generating unit includes a first resistor, a second resistor, a first diode, a first optocoupler and a second optocoupler; The DC voltage input end is respectively connected to one end of the first resistor and the negative end of the first diode; the other end of the first resistor is respectively connected to one end of the second resistor and the first controller through the light receiver of the first optical coupler, and the other end of the second resistor is grounded; The positive terminal of the first diode is grounded through the light emitter of the first optocoupler and the light emitter of the second optocoupler in sequence; one end of the light receiver of the second optocoupler is connected to the AC input module, and the other end of the light receiver is grounded.

6. The dual input circuit according to claim 3, characterized in that: The first voltage conversion unit includes a third resistor and a first capacitor; the multi-winding transformer includes a first primary auxiliary winding; The DC voltage input end is respectively connected to one end of the first capacitor, the first controller and one end of the first primary auxiliary winding through the third resistor; the other end of the first capacitor and the other end of the first primary auxiliary winding are grounded respectively.

7. The dual input circuit according to claim 3, characterized in that: The first voltage conversion unit includes a DCDC conversion subunit; The DCDC conversion subunit is used to convert the DC voltage into a first working signal and transmit the first working signal to the first controller to provide a working voltage for the first controller.

8. The dual input circuit according to claim 1, characterized in that The AC input module includes a rectifier bridge, a second enable signal generating unit, a second voltage conversion unit, a second controller and a second switch tube; The input end of the rectifier bridge is configured to be connected to an AC voltage; the output end of the rectifier bridge is respectively connected to the second enable signal generating unit and the second voltage conversion unit; the output end of the rectifier bridge is grounded through the second primary winding and the second switch tube in sequence; The second enable signal generating unit is respectively connected to the DC input module, the second voltage conversion unit and the second controller; the second voltage conversion unit is also connected to the second controller and the multi-winding transformer, and the second controller is also connected to the control end of the second switch tube.

9. The dual input circuit according to claim 8, characterized in that: The second enable signal generating unit includes a fourth resistor and a fifth resistor; The output end of the rectifier bridge is respectively connected to one end of the fifth resistor, the second controller and the DC input module through the fourth resistor; the other end of the fifth resistor is grounded.

10. The dual-input circuit according to claim 8, characterized in that The second voltage conversion unit includes a sixth resistor and a second capacitor; the multi-winding transformer also includes a second primary auxiliary winding; The output end of the rectifier bridge is respectively connected to one end of the second capacitor, the second controller and one end of the second primary auxiliary winding through the sixth resistor; the other end of the second capacitor and the other end of the second primary auxiliary winding are grounded respectively.

11. A control method for a dual-input circuit, characterized in that: Applied to the dual-input circuit of claim 1, the method comprising: Acquire a DC voltage and an AC voltage, and output a first enable signal, a second enable signal, and a first working signal based on the DC voltage; and output a third enable signal and a second working signal based on the AC voltage; When the first enable signal and the first working signal meet the DC working condition, controlling the DC input module to input energy to the output module, and transmitting the second enable signal to the AC input module to disable the AC input module; When the second enable signal, the third enable signal and the second working signal meet the AC working condition, the AC input module is controlled to input energy to the output module.

12. The control method of the dual-input circuit according to claim 11, characterized in that: The DC input module includes a first controller, and the AC input module includes a second controller; When the first enable signal is greater than a first preset voltage, it is determined that the first enable signal meets the DC working condition; When the first enable signal satisfies the DC working condition, the second enable signal is in a first state, and the first state is used to determine that the second enable signal does not satisfy the AC working condition; When the first enable signal does not meet the DC working condition, the second enable signal is in a second state, and the second state is used to determine that the second enable signal meets the AC working condition; When the third enable signal is greater than the second preset voltage, it is determined that the third enable signal meets the AC working condition; When the first working signal is greater than the working voltage of the first controller, it is determined that the first working signal meets the DC working condition; When the second working signal is greater than the working voltage of the second controller, it is determined that the second working signal meets the AC working condition.

13. The control method of the dual-input circuit according to claim 11, characterized in that: The DC input module includes a first voltage conversion unit, a first controller and a first switch tube; The controlling the DC input module to transfer energy to the output module comprises: The first voltage conversion unit is controlled to output the first working signal to the first controller to provide a working voltage to the first controller, so that the first controller controls the first switch tube to be turned on and off.

14. The control method of the dual-input circuit according to claim 13, characterized in that: The multi-winding transformer further includes a first primary auxiliary winding; and further includes: When the first switch tube is turned on, the first primary winding is energized; When the first switch tube is turned off, the first primary winding transmits energy to the secondary winding and the first primary auxiliary winding through electromagnetic coupling; so that the first primary auxiliary winding transmits electric energy to the first controller to provide a working voltage for the first controller, and the secondary winding transmits electric energy to the output module; Repeat the steps of turning the first switch tube on and off to continuously supply energy to the output module.

15. The control method of the dual-input circuit according to claim 11, characterized in that: The AC input module includes a rectifier bridge, a second enable signal generating unit, a second voltage conversion unit, a second controller and a second switch tube; The controlling the AC input module to transfer energy to the output module comprises: The second voltage conversion unit is controlled to output the second working signal to the second controller to provide a working voltage to the second controller, so that the second controller controls the second switch tube to be turned on and off.

16. The control method of the dual-input circuit according to claim 15, characterized in that: The multi-winding transformer further includes a second primary auxiliary winding; and further includes: When the second switch tube is turned on, the second primary winding is energized; When the second switch tube is turned off, the second primary winding transmits energy to the secondary winding and the second primary auxiliary winding through electromagnetic coupling; so that the second primary auxiliary winding transmits electric energy to the second controller to provide a working voltage for the second controller, and the secondary winding transmits electric energy to the output module; Repeat the steps of turning the second switch tube on and off to continuously supply energy to the output module.

17. The control method of the dual-input circuit according to claim 11, characterized in that: The DC input module includes a first switch tube; the AC input module includes a second switch tube; the multi-winding transformer also includes a first primary auxiliary winding and a second primary auxiliary winding; When the DC input module is in working state; when the first switch tube is turned on, the DC input module charges the first primary winding; when the first switch tube is turned off, the first primary winding charges the first primary auxiliary winding, the second primary auxiliary winding and the secondary winding; When the AC input module is in a working state; when the second switch tube is turned on, the AC input module charges the second primary winding; when the second switch tube is turned off, the second primary winding charges the first primary auxiliary winding, the second primary auxiliary winding and the secondary winding.

18. An energy storage device, characterized in that: The energy storage device comprises the dual-input circuit according to any one of claims 1-10, the dual-input circuit comprises a processor and a memory, the memory stores a computer program, and the processor is used to execute the computer program to implement the control method of the dual-input circuit according to any one of claims 11-17.

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