Power supply control circuit and energy storage power supply

Abstract

The utility model relates to a power supply control circuit and an energy storage power supply. The circuit comprises a DC conversion module, a detection control module, and a photovoltaic power supply module and a PD power supply module which are respectively connected with the DC conversion module and the detection control module. The photovoltaic power supply module is connected with a photovoltaic input source, and the PD power supply module is connected with a power supply / load device. And the detection control module is used for controlling the photovoltaic power supply module to input the photovoltaic voltage to the battery through the direct current conversion module when the photovoltaic voltage is detected so as to charge the battery, and controlling the PD power supply module to stop working so as to realize preferential input of the photovoltaic voltage, thereby improving the energy utilization rate. And when the power supply voltage or the load equipment is detected to be accessed, the PD power supply module is controlled to start working, so that the power supply voltage is input to the battery or the battery voltage is output to the load equipment through the direct current conversion module, and a double-input bidirectional charging and discharging function is realized through one direct current conversion module, so that the equipment cost is reduced.

Description

[Technical Field]

[0001] This utility model relates to the technical field of energy storage power supply, and in particular to a power supply control circuit and an energy storage power supply. [Background Technology]

[0002] With the increasing demand for outdoor power and emergency backup power, portable energy storage devices have been widely adopted. These devices typically feature multiple interfaces to meet diverse power needs. Common interfaces include a PV input port, which converts solar energy into electrical energy for charging when mains power is unavailable; and a single-output or bidirectional PD port, which provides both fast charging and power supply capabilities and is becoming increasingly important in portable energy storage devices. Therefore, existing energy storage devices require two separate DC-DC converter modules to meet both PV input and PD power supply requirements, resulting in high manufacturing costs. To address this, and to reduce production costs while meeting functional requirements, it is necessary to propose a power supply control circuit. [Utility Model Content]

[0003] This utility model provides a power supply control circuit and an energy storage power supply, aiming to solve the technical problem of high production cost of energy storage power supplies in the prior art.

[0004] To solve the above-mentioned technical problems, one technical solution adopted by this utility model is: to provide a power supply control circuit, which includes a DC conversion module, a photovoltaic power supply module, a detection control module and a PD power supply module;

[0005] The DC-DC conversion module is connected to the photovoltaic power supply module and the PD power supply module respectively. The DC-DC conversion module is also used to connect to the battery. The photovoltaic power supply module is used to connect to the photovoltaic input source. The PD power supply module is used to connect to the power supply or load device. The detection and control module is connected to the photovoltaic power supply module and the PD power supply module respectively.

[0006] The detection and control module is used to output a control signal to the photovoltaic power supply module and an off signal to the PD power supply module when the photovoltaic voltage of the photovoltaic input source is detected; and

[0007] When the power supply voltage of the power supply is detected or when a load device is detected to be connected, a drive signal is output to the PD power supply module;

[0008] The photovoltaic power supply module is used to start working according to the control signal when it receives the control signal, so as to input the photovoltaic voltage of the photovoltaic input source to the DC conversion module, thereby charging the battery based on the DC conversion module;

[0009] The PD power supply module is used to start working according to the drive signal when the shutdown signal is not received, so as to input the power supply voltage of the power supply to the DC-DC conversion module, thereby charging the battery based on the DC-DC conversion module; or

[0010] When the shutdown signal is not received, the device starts working according to the drive signal to input the battery voltage of the battery to the load device through the DC-DC conversion module, thereby discharging the battery based on the DC-DC conversion module.

[0011] Optionally, the detection and control module includes a photovoltaic sampling control unit and a PD sampling control unit;

[0012] The photovoltaic sampling control unit is connected to the photovoltaic power supply module and the PD power supply module respectively. The PD sampling control unit is connected to the PD power supply module. The photovoltaic sampling control unit is also used to connect to the photovoltaic input source. The PD sampling control unit is also used to connect to the power supply or load device.

[0013] The photovoltaic sampling control unit is used to output a control signal to the photovoltaic power supply module when the photovoltaic voltage of the photovoltaic input source is detected, so as to start the photovoltaic power supply module from working; and

[0014] Output a shutdown signal to the PD power supply module to stop the PD power supply module from working;

[0015] The PD sampling control unit is used to output a drive signal to the PD power supply module when the power supply voltage is detected, so that the PD power supply module starts to work; or

[0016] When the load device is detected to be connected, a drive signal is output to the PD power supply module so that the PD power supply module starts to work.

[0017] Optionally, the photovoltaic sampling control unit includes a photovoltaic sampling subunit and a photovoltaic control subunit;

[0018] The photovoltaic sampling subunit is connected to the photovoltaic power supply module and the photovoltaic control subunit respectively. The photovoltaic control subunit is connected to the PD power supply module. The photovoltaic sampling subunit is also used to connect to the photovoltaic input source.

[0019] The photovoltaic sampling subunit is used to output a control signal to the photovoltaic power supply module when the photovoltaic voltage of the photovoltaic input source is collected, so as to start the photovoltaic power supply module to work; and

[0020] When the photovoltaic voltage of the photovoltaic input source is collected, the photovoltaic control subunit is controlled to output a shutdown signal to the PD power supply module, thereby controlling the PD power supply module to stop working.

[0021] Optionally, the photovoltaic sampling subunit includes resistor R1 and resistor R2;

[0022] The first end of resistor R1 is used to connect to the photovoltaic input source, the second end of resistor R1 is connected to resistor R2, the photovoltaic power supply module, and the photovoltaic control subunit, respectively, and the second end of resistor R2 is used to ground.

[0023] Optionally, the photovoltaic control subunit includes a switch Q7, a resistor R11, and a resistor R12;

[0024] The control terminal of the switch Q7 is connected to the photovoltaic sampling subunit through the resistor R11. The control terminal of the switch Q7 is also grounded through the resistor R12. The first terminal of the switch Q7 is connected to the PD power supply module, and the second terminal of the switch Q7 is used for grounding.

[0025] Optionally, the photovoltaic power supply module includes a first control unit and a first switching unit;

[0026] The first control unit is connected to the first switching unit and the detection and control module respectively. The first switching unit is connected to the DC conversion module. The first switching unit is also used to connect to the photovoltaic input source.

[0027] The first control unit is used to control the first switch unit to close according to the control signal after receiving the control signal, so as to input the photovoltaic voltage to the DC conversion module to charge the battery based on the DC conversion module.

[0028] Optionally, the first control unit includes a switch Q1, a resistor R3, and a resistor R4;

[0029] The control terminal of the switch Q1 is connected to the detection and control module through the resistor R3. The control terminal of the switch Q1 is also grounded through the resistor R4. The first terminal of the switch Q1 is connected to the first switching unit, and the second terminal of the switch Q1 is grounded.

[0030] Optionally, the first switching unit includes a switching transistor Q2, a switching transistor Q3, a resistor R5, and a resistor R6;

[0031] The control terminal of the switch Q2 is connected to the first control unit through the resistor R5. The control terminal of the switch Q2 is also connected to the control terminal of the switch Q3. The first terminal of the switch Q2 is used to connect to the photovoltaic input source. The second terminal of the switch Q2 is connected to the second terminal of the switch Q3. The second terminal of the switch Q2 is also connected to the resistor R5 through the resistor R6. The first terminal of the switch Q3 is connected to the DC-DC conversion module.

[0032] Optionally, the PD power supply module includes a second control unit and a second switching unit;

[0033] The second control unit is connected to the second switching unit and the detection control module respectively. The second switching unit is connected to the DC conversion module. The second switching unit is also used to connect to the power supply or load device.

[0034] The second control unit is configured to, when not receiving the shutdown signal, control the second switch unit to close according to the drive signal, thereby inputting the power supply voltage to the DC-DC converter module to charge the battery based on the DC-DC converter module; and

[0035] When the shutdown signal is not received, the second switch unit is controlled to close according to the drive signal, thereby outputting the battery voltage output by the DC-DC conversion module to the load device, so as to discharge the battery based on the DC-DC conversion module.

[0036] To solve the above-mentioned technical problems, another technical solution adopted in this utility model embodiment is: to provide an energy storage power source, the energy storage power source comprising:

[0037] Batteries; and

[0038] The power supply control circuit described above.

[0039] Unlike related technologies, this utility model provides a power supply control circuit and an energy storage power supply. The power supply control circuit includes a DC-DC conversion module, a detection and control module, a photovoltaic power supply module, and a PD power supply module. The DC-DC conversion module is connected to both the photovoltaic power supply module and the PD power supply module, and is also used to connect a battery. The photovoltaic power supply module is used to connect to a photovoltaic input source, and the PD power supply module is used to connect to a power supply or load device. The detection and control module is connected to both the photovoltaic power supply module and the PD power supply module. When the photovoltaic voltage of the photovoltaic input source is detected, the detection and control module controls the photovoltaic power supply module to start working, so as to input the photovoltaic voltage of the photovoltaic input source to the DC-DC conversion module, thereby charging the battery based on the DC-DC conversion module. Simultaneously, it outputs a shutdown signal to the PD power supply module to control the PD power supply module to stop working, thereby prioritizing the reception of photovoltaic voltage when photovoltaic power is connected, thus improving energy utilization. When the power supply voltage of the power supply is detected, the PD power supply module is controlled to start working, thereby inputting the power supply voltage to the battery through the DC-DC conversion module. Based on this, a dual-input charging mode can be achieved using only a single DC-DC converter module, meeting the needs of different power supply scenarios while reducing equipment costs. When a load device is detected, the PD power supply module also starts working, outputting the battery voltage from the DC-DC converter module to the load device, thereby powering the load device. This achieves bidirectional power supply functionality for the energy storage power supply, enabling the circuit to not only charge the battery but also directly power the load device, enhancing the functionality and practicality of the energy storage power supply. [Attached Image Description]

[0040] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0041] Figure 1 This is a schematic diagram of an application scenario provided by an embodiment of the present utility model;

[0042] Figure 2 This is a structural block diagram of a power supply control circuit provided in an embodiment of this utility model;

[0043] Figures 3a-3c This is a circuit diagram of a detection and control module provided in an embodiment of the present utility model;

[0044] Figure 4 This is a circuit diagram of a photovoltaic power supply module provided in an embodiment of the present utility model;

[0045] Figure 5This is a circuit diagram of a PD power supply module provided in an embodiment of this utility model.

Detailed Implementation Methods

[0046] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0047] The technical features involved in the various embodiments of this application described below do not conflict with each other and can be combined with each other.

[0048] When an element is described as "connected" to another element, it can be directly connected to the other element, or there may be one or more intervening elements between them.

[0049] The terms "first," "second," etc., used in the specification and claims of this utility model are used to distinguish similar objects and are not used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, the first object can be one or more.

[0050] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0051] Please see Figure 1 , Figure 1 This is one application scenario provided by an embodiment of the present utility model, such as Figure 1 As shown, this application scenario 1 includes an energy storage power supply 100, a photovoltaic input source 200, a power supply 300, and a load device 400. The energy storage power supply 100 is used to connect to the photovoltaic input source 200, the power supply 300, or the load device 400. When the energy storage power supply 100 is connected to the photovoltaic input source 200 or the power supply 300, it receives and stores the photovoltaic voltage output by the photovoltaic input source 200 or the power supply voltage output by the power supply 300. When the energy storage power supply 100 is connected to the load device 400, it outputs the stored battery voltage to the load device 400 to discharge the load device 400.

[0052] It should be noted that, since the energy storage power supply 100 needs to have both charging and discharging functions, and in order to save costs, such as Figure 1 As shown, the energy storage power supply 100 includes a battery 10 and a power supply control circuit 20. The power supply control circuit 20 is connected to the battery 10 and is also used to connect to the photovoltaic input source 200, the power supply 300, or the load device 400. Specifically, when the energy storage power supply 100 is connected to the photovoltaic input source 200 / power supply 300, the power supply control circuit 20 detects the photovoltaic voltage output by the photovoltaic input source 200 or the power supply voltage output by the power supply 300, and starts working based on the photovoltaic voltage / power supply voltage, thereby inputting the photovoltaic voltage / power supply voltage to the battery 10 to charge the battery 10. When the energy storage power supply 100 is connected to the load device 400, the power supply control circuit 20 starts working upon detecting the connection of the load device 400. After the power supply control circuit 20 starts working, the battery 10 discharges to the load device 400 based on the power supply control circuit 20, thereby providing operating voltage to the load device 400. Based on this, the power supply control circuit 20 can simultaneously perform photovoltaic charging, power supply charging, and load discharging functions, thereby saving costs.

[0053] Furthermore, in some embodiments, please refer to Figure 2 , Figure 2 This is a structural block diagram of a power supply control circuit provided in an embodiment of this utility model, as shown below. Figure 2 As shown, the power supply control circuit 20 includes a DC conversion module 21, a photovoltaic power supply module 22, a detection and control module 23, and a PD power supply module 24;

[0054] The DC-DC conversion module 21 is connected to the photovoltaic power supply module 22 and the PD power supply module 23 respectively. The DC-DC conversion module 21 is also used to connect to the battery 10. The photovoltaic power supply module 22 is used to connect to the photovoltaic input source 200. The PD power supply module 24 is used to connect to the power supply 300 or the load device 400. The detection and control module 23 is connected to the photovoltaic power supply module 22 and the PD power supply module 24 respectively.

[0055] The detection and control module 23 is used to output a control signal to the photovoltaic power supply module 22 and an off signal to the PD power supply module 24 when the photovoltaic voltage of the photovoltaic input source 200 is detected; and

[0056] When the power supply voltage of the power supply 300 is detected or the load device 400 is detected to be connected, a drive signal is output to the PD power supply module 24;

[0057] The photovoltaic power supply module 22 is used to start working according to the control signal when it receives the control signal, so as to input the photovoltaic voltage of the photovoltaic input source 200 to the DC conversion module 21, thereby charging the battery 10 based on the DC conversion module 21;

[0058] The PD power supply module 24 is used to start working according to the drive signal when the shutdown signal is not received, so as to input the power supply voltage of the power supply 300 to the DC-DC conversion module 21, thereby charging the battery 10 based on the DC-DC conversion module 21; or

[0059] When the shutdown signal is not received, the device starts working according to the drive signal to input the battery voltage of the battery 10 to the load device 400 through the DC-DC conversion module 21, thereby discharging the battery 10 based on the DC-DC conversion module 21.

[0060] Specifically, the detection and control module 23 monitors the connection status of the energy storage power supply 100 in real time. When the detection and control module 23 detects the photovoltaic voltage output by the photovoltaic input source 200, it outputs a control signal to the photovoltaic power supply module 22 to start the photovoltaic power supply module 22; simultaneously, it outputs a shutdown signal to the PD power supply module 24 to stop the PD power supply module 24 from working. That is, when the photovoltaic input source 200 is connected to the energy storage power supply 100, regardless of whether the power supply 300 or the load device 400 is connected to the energy storage power supply 100, the energy storage power supply 100 will not receive the power supply voltage from the power supply 300, nor will it output voltage to the energy storage power supply 100, thereby avoiding the waste of the photovoltaic voltage of the photovoltaic input source 200 and improving energy utilization.

[0061] When the photovoltaic power supply module 22 starts working according to the control signal, it receives the photovoltaic voltage output from the photovoltaic input source 200 and inputs the photovoltaic voltage to the DC-DC conversion module 21. The DC-DC conversion module 21 then converts the photovoltaic voltage and inputs the converted photovoltaic voltage to the battery 10 to charge it. It should be noted that since the operating voltage of the battery 10 may not match the photovoltaic voltage, the power supply control circuit 20 introduces the DC-DC conversion module 21 to ensure that the input voltage of the battery 10 meets its voltage requirements. When the photovoltaic power supply module 22 outputs photovoltaic voltage, the DC-DC conversion module 21 converts the photovoltaic voltage and inputs the converted photovoltaic voltage to the battery 10, thus charging the battery 10 while ensuring that the voltage input to the battery 10 meets its voltage requirements.

[0062] When the detection and control module 23 detects the power supply voltage of the power supply 300 or the connection of the load device 400, the detection and control module 23 outputs a drive signal to the PD power supply module 24 to control the PD power supply module 24 to start working. After the PD power supply module 24 starts working according to the drive signal, it inputs the power supply voltage of the power supply 300 to the DC-DC converter module 21, so that the DC-DC converter module 21 converts the power supply voltage and inputs the converted power supply voltage to the battery 10 to charge the battery 10. Alternatively, after starting work, it receives the battery voltage converted by the DC-DC converter module 21 and inputs the battery voltage to the load device 400 to power the load device 400.

[0063] In yet another embodiment, such as Figure 2 As shown, the detection control module 23 includes a photovoltaic sampling control unit 231 and a PD sampling control unit 232;

[0064] The photovoltaic sampling control unit 231 is connected to the photovoltaic power supply module 22 and the PD power supply module 24 respectively. The PD sampling control unit 232 is connected to the PD power supply module 24. The photovoltaic sampling control unit 231 is also used to connect to the photovoltaic input source 200. The PD sampling control unit 232 is also used to connect to the power supply 300 or the load device 400.

[0065] The photovoltaic sampling control unit 231 is used to output a control signal to the photovoltaic power supply module 22 when the photovoltaic voltage of the photovoltaic input source 200 is detected, so as to start the photovoltaic power supply module 22 to work; and

[0066] Output a shutdown signal to the PD power supply module 24 to stop the PD power supply module 24 from working;

[0067] The PD sampling control unit 232 is used to output a drive signal to the PD power supply module 24 when the power supply voltage of the power supply 300 is detected, so as to make the PD power supply module 24 start working; or

[0068] When the load device 400 is detected to be connected, a drive signal is output to the PD power supply module 24 so that the PD power supply module 24 starts to work.

[0069] Specifically, when the photovoltaic input source 200 is connected to the energy storage power supply 100, the photovoltaic sampling control unit 231 will detect the photovoltaic voltage of the photovoltaic input source 200 and output a control signal to the photovoltaic power supply module 22 based on the photovoltaic voltage to make the photovoltaic power supply module 22 start working; at the same time, it will also output a shutdown signal to the PD power supply module 24 to make the PD power supply module 24 stop working.

[0070] When the power supply 300 is connected to the energy storage power supply 100, the PD sampling control unit 232 detects the supply voltage of the power supply 300 and outputs a drive signal to the PD power supply module 24 based on the supply voltage, so that the PD power supply module 24 starts working. Alternatively, when the load device 400 is connected to the energy storage power supply 100, the PD sampling control unit 232 detects the connection of the load device 400 and outputs a drive signal to the PD power supply module 24, so that the PD power supply module 24 starts working.

[0071] In yet another embodiment, such as Figure 2 As shown, the photovoltaic sampling control unit 231 includes a photovoltaic sampling subunit 2311 and a photovoltaic control subunit 2312;

[0072] The photovoltaic sampling subunit 2311 is connected to the photovoltaic power supply module 22 and the photovoltaic control subunit 2312 respectively. The photovoltaic control subunit 2312 is connected to the PD power supply module 24. The photovoltaic sampling subunit 2311 is also used to connect to the photovoltaic input source 200.

[0073] The photovoltaic control subunit 2312 is used to output a control signal to the photovoltaic power supply module 22 when the photovoltaic sampling subunit 2311 collects the photovoltaic voltage of the photovoltaic input source 200, so as to start the photovoltaic power supply module 22 to work; and

[0074] When the photovoltaic sampling subunit 2311 collects the photovoltaic voltage of the photovoltaic input source 200, it outputs a shutdown signal to the PD power supply module 24, thereby controlling the PD power supply module 24 to stop working.

[0075] When the photovoltaic input source 200 is connected to the energy storage power supply 100, the photovoltaic sampling subunit 2311 collects the photovoltaic voltage of the photovoltaic input source 200 and inputs the photovoltaic voltage to the photovoltaic power supply module 22 to start the photovoltaic power supply module 22. Simultaneously, the photovoltaic voltage is also input to the photovoltaic control subunit 2312. When the photovoltaic control subunit 2312 receives the photovoltaic voltage, it outputs a shutdown signal to the PD power supply module 24 to stop the PD power supply module 24 from operating. Based on this, when there is photovoltaic input, the energy storage power supply 100 can be charged preferentially based on the photovoltaic voltage, thereby avoiding energy waste.

[0076] In some embodiments, please refer to Figures 3a-3c , Figures 3a-3c This is a circuit diagram of a detection and control module provided in an embodiment of this utility model, as shown below. Figures 3a-3b As shown, the photovoltaic sampling subunit 2311 includes resistors R1 and R2; the photovoltaic control subunit 2312 includes a switch Q7, resistors R11 and R12.

[0077] The first end of the resistor R1 is used to connect to the photovoltaic input source 200, the second end of the resistor R1 is connected to the resistor R2, the photovoltaic power supply module 22, and the photovoltaic control subunit 2312 respectively, and the second end of the resistor R2 is used to ground.

[0078] The control terminal of the switch Q7 is connected to the photovoltaic sampling subunit 2311 through the resistor R11. The control terminal of the switch Q7 is also grounded through the resistor R12. The first terminal of the switch Q7 is connected to the PD power supply module 24, and the second terminal of the switch Q7 is used for grounding.

[0079] Specifically, when the photovoltaic input source 200 is connected to the energy storage power supply 100, the photovoltaic voltage is input to the photovoltaic sampling subunit 2311. At this time, resistors R1 and R2 divide the photovoltaic voltage and input the divided photovoltaic voltage to the photovoltaic power supply module 22 to enable the photovoltaic power supply module 22 to start working. Simultaneously, the photovoltaic sampling subunit 2311 also inputs the divided photovoltaic voltage to the photovoltaic control subunit 2312. The switching transistor Q7 receives the divided photovoltaic voltage through resistor R11 and turns on based on this voltage. When the switching transistor Q7 turns on, it outputs a turn-off signal to the PD power supply module 24 to stop the PD power supply module 24 from working.

[0080] In another embodiment, the energy storage power supply 100 further includes a controller (not shown). When the energy storage power supply 100 is connected to the photovoltaic input source 200, the photovoltaic sampling subunit 2311 will input the collected photovoltaic voltage to the controller. After receiving the photovoltaic voltage, the controller will output a control signal (PV-EN) to the photovoltaic power supply module 22 and simultaneously output a shutdown signal to the PD power supply module 24, thereby controlling the photovoltaic power supply module 22 to start working and the PD power supply module 24 to stop working.

[0081] In yet another embodiment, such as Figure 3a As shown, the PD sampling control unit 232 includes resistor R13 and resistor R14;

[0082] The first end of the resistor R13 is used to connect to the power supply 300, the second end of the resistor R1 is connected to the resistor R14 and the PD power supply module 24 respectively, and the second end of the resistor R14 is used to ground.

[0083] Specifically, when the power supply 300 is connected to the energy storage power supply 100, the power supply voltage is input to the PD sampling control unit 232. At this time, resistors R13 and R14 divide the power supply voltage and input the divided power supply voltage to the PD power supply module 24 so that the PD power supply module 24 can start working.

[0084] In yet another embodiment, such as Figure 3c As shown, the PD sampling control unit 232 also includes a TYPE-C terminal, which is connected to the power supply 300. The TYPE-C terminal is used to receive the communication signal input by the load device 400 when the load device 400 is connected to the energy storage power supply 100, and output a drive signal to the PD power supply module 24 based on the communication signal so that the PD power supply module 24 starts to work.

[0085] In another embodiment, when the energy storage power supply 100 further includes a controller, if the energy storage power supply 100 is connected to the power supply 300, the PD sampling control unit 232 will input the collected power supply voltage to the controller. After receiving the power supply voltage, the controller will output a drive signal (PD-EN) to the PD power supply module 24 to start the PD power supply module 24. If the energy storage power supply 100 is connected to the load device 400, the controller will receive the communication signals (CC1-1, CC1-2) input by the load device 400 based on the TYPE-C terminal, and output a drive signal to the PD power supply module 24 based on the communication signals to start the PD power supply module 24.

[0086] In some embodiments, such as Figure 2 As shown, the photovoltaic power supply module 22 includes a first control unit 221 and a first switching unit 222;

[0087] The first control unit 221 is connected to the first switch unit 222 and the detection control module 23 respectively. The first switch unit 222 is connected to the DC conversion module 21. The first switch unit 221 is also used to connect to the photovoltaic input source 200.

[0088] The first control unit 221 is used to control the first switch unit 222 to close according to the control signal after receiving the control signal, so as to input the photovoltaic voltage to the DC conversion module 21, so as to charge the battery 10 based on the DC conversion module 21.

[0089] When the photovoltaic input source 200 is connected to the energy storage power supply 100, the detection and control module 23 will output a control signal to the first control unit 221. When the first control unit 221 receives the control signal, it will control the first switch unit 222 to close based on the control signal, so that the photovoltaic voltage of the photovoltaic input source 200 is input to the DC-DC conversion module 21 through the first switch unit 222, thereby charging the battery 10.

[0090] For further details, please refer to Figure 4 , Figure 4 This is a circuit diagram of a photovoltaic power supply module provided in an embodiment of this utility model, as shown below. Figure 4 As shown, the first control unit 221 includes a switch Q1, a resistor R3, and a resistor R4; the first switching unit 222 includes a switch Q2, a switch Q3, a resistor R5, and a resistor R6.

[0091] The control terminal of the switch Q1 is connected to the detection and control module 23 through the resistor R3. The control terminal of the switch Q1 is also grounded through the resistor R4. The first terminal of the switch Q1 is connected to the first switch unit 222, and the second terminal of the switch Q1 is used for grounding.

[0092] The control terminal of the switch Q2 is connected to the first control unit 221 through the resistor R5. The control terminal of the switch Q2 is also connected to the control terminal of the switch Q3. The first terminal of the switch Q2 is used to connect to the photovoltaic input source 200. The second terminal of the switch Q2 is connected to the second terminal of the switch Q3. The second terminal of the switch Q2 is also connected to the resistor R5 through the resistor R6. The first terminal of the switch Q3 is connected to the DC-DC conversion module 21.

[0093] Specifically, when the detection and control module 23 outputs a control signal, the switch Q1 receives the control signal through the resistor R3 and turns on according to the control signal. When the switch Q1 turns on, the voltage of the resistor R5 is pulled low, thereby turning on the switches Q2 and Q3. When the switches Q2 and Q3 turn on, the photovoltaic voltage (PV-IN) of the photovoltaic input source 200 can be input to the battery 10 through the DC-DC conversion module 21 to charge the battery 10.

[0094] In yet another embodiment, such as Figure 2 As shown, the PD power supply module 24 includes a second control unit 241 and a second switching unit 242;

[0095] The second control unit 241 is connected to the second switch unit 242 and the detection control module 23 respectively. The second switch unit 242 is connected to the DC conversion module 21. The second switch unit 242 is also used to connect to the power supply 300 or the load device 400.

[0096] The second control unit 241 is configured to, when not receiving the shutdown signal, control the second switch unit 242 to close according to the drive signal, thereby inputting the power supply voltage to the DC-DC converter module 21 to charge the battery 20 based on the DC-DC converter module 21; and

[0097] When the shutdown signal is not received, the second switch unit 242 is controlled to close according to the drive signal, thereby outputting the battery voltage output by the DC-DC conversion module 21 to the load device 400, so as to discharge the battery 10 based on the DC-DC conversion module 21.

[0098] When the photovoltaic input source 200 is connected to the energy storage power supply 100, the second control unit 241 receives a shutdown signal output by the detection control module 23 and stops working according to the shutdown signal. When the power supply 300 is connected to the energy storage power supply 100, the second control unit 241 receives a drive signal output by the detection control module 23 and controls the second switch unit 242 to close according to the drive signal, so that the power supply voltage of the power supply 300 is input to the DC-DC converter module 21 through the second switch unit 242, thereby charging the battery 10. Alternatively, when the load device 400 is connected to the energy storage power supply 100, the second control unit 241 controls the second switch unit 242 to close according to the drive signal, so that the second switch unit 242 outputs the battery voltage output by the DC-DC converter module 21 to the load device 400, thereby discharging the battery 10.

[0099] In yet another embodiment, please refer to Figure 5 , Figure 5 This is a circuit diagram of a PD power supply module provided in an embodiment of this utility model, as shown below. Figure 5 As shown, the second control unit 241 includes a switch Q4, a resistor R7, and a resistor R8; the second switching unit 242 includes a switch Q5, a switch Q6, a resistor R9, and a resistor R10.

[0100] The control terminal of the switch Q4 is connected to the detection and control module 23 through the resistor R7. The control terminal of the switch Q4 is also grounded through the resistor R8. The first terminal of the switch Q4 is connected to the second switch unit 242, and the second terminal of the switch Q4 is used for grounding.

[0101] The control terminal of the switch Q5 is connected to the second control unit 241 through the resistor R9. The control terminal of the switch Q5 is also connected to the control terminal of the switch Q6. The first terminal of the switch Q5 is used to connect to the power supply 300 / load device 400. The second terminal of the switch Q5 is connected to the second terminal of the switch Q6. The second terminal of the switch Q5 is also connected to the resistor R9 through the resistor R10. The first terminal of the switch Q6 is connected to the DC-DC conversion module 21.

[0102] Specifically, when the detection and control module 23 outputs a shutdown signal, the switch Q4 is turned off based on the shutdown signal, thereby causing switches Q5 and Q6 to be in the off state, thus stopping the transmission of the power supply voltage or battery voltage. When the detection and control module 23 outputs a drive signal, the switch Q4 closes based on the drive signal, thereby pulling down the voltage at the second end of resistor R9, causing switches Q5 and Q6 to conduct due to the conduction condition being met. At this time, if the energy storage power supply 100 is connected to the power supply 300, the power supply voltage is input from left to right to the DC-DC conversion module 21 to charge the battery 10; and if the energy storage power supply 100 is connected to the load device 400, the battery voltage is input from right to left to the load device 400 to supply power to the load device 400.

[0103] This utility model provides a power supply control circuit, which includes a DC-DC conversion module, a detection and control module, a photovoltaic power supply module, and a PD power supply module. The DC-DC conversion module is connected to both the photovoltaic power supply module and the PD power supply module, and is also used to connect a battery. The photovoltaic power supply module is connected to a photovoltaic input source, and the PD power supply module is connected to a power supply or load device. The detection and control module is connected to both the photovoltaic power supply module and the PD power supply module. When the photovoltaic voltage of the photovoltaic input source is detected, the detection and control module controls the photovoltaic power supply module to start working, so as to input the photovoltaic voltage of the photovoltaic input source to the DC-DC conversion module, thereby charging the battery based on the DC-DC conversion module. Simultaneously, it outputs a shutdown signal to the PD power supply module to control the PD power supply module to stop working, thereby prioritizing the reception of photovoltaic voltage when photovoltaic power is connected, thus improving energy utilization. When the power supply voltage is detected, the PD power supply module is controlled to start working, so as to input the power supply voltage to the battery through the DC-DC conversion module. Based on this, a dual-input charging mode can be achieved with only one DC-DC conversion module, meeting different power supply requirements while reducing equipment costs. When a load device is detected to be connected, the PD power supply module will also start working and output the battery voltage through the DC-DC conversion module to the load device, thereby powering the load device. This realizes the bidirectional power supply function of the energy storage power supply, so that the circuit can not only charge the battery, but also directly power the load device, improving the functionality and practicality of the energy storage power supply.

[0104] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above, which are not provided in detail for the sake of brevity; although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A power supply control circuit, characterized by comprising: The power supply control circuit comprises a direct current conversion module, a photovoltaic power supply module, a detection control module and a PD power supply module; The direct current conversion module is connected with the photovoltaic power supply module and the PD power supply module respectively, and is further used for connecting a battery; the photovoltaic power supply module is used for connecting a photovoltaic input source; the PD power supply module is used for connecting a power supply or a load device; and the detection control module is connected with the photovoltaic power supply module and the PD power supply module respectively; The detection control module is used for outputting a control signal to the photovoltaic power supply module and outputting an off signal to the PD power supply module when detecting a photovoltaic voltage of the photovoltaic input source; And outputting a driving signal to the PD power supply module when detecting a power supply voltage of the power supply or detecting access of the load device; The photovoltaic power supply module is used for starting work according to the control signal when receiving the control signal, so as to input the photovoltaic voltage of the photovoltaic input source to the direct current conversion module, thereby charging the battery based on the direct current conversion module; The PD power supply module is used for starting work according to the driving signal when not receiving the off signal, so as to input the power supply voltage of the power supply to the direct current conversion module, thereby charging the battery based on the direct current conversion module; Or starting work according to the driving signal when not receiving the off signal, so as to input the battery voltage of the battery to the load device through the direct current conversion module, thereby discharging the battery based on the direct current conversion module.

2. The power supply control circuit of claim 1, wherein, The detection control module comprises a photovoltaic sampling control unit and a PD sampling control unit; The photovoltaic sampling control unit is connected with the photovoltaic power supply module and the PD power supply module respectively, and the PD sampling control unit is connected with the PD power supply module; the photovoltaic sampling control unit is further used for connecting the photovoltaic input source, and the PD sampling control unit is further used for connecting the power supply or the load device; The photovoltaic sampling control unit is used for outputting a control signal to the photovoltaic power supply module when detecting a photovoltaic voltage of the photovoltaic input source, so as to make the photovoltaic power supply module start work; and outputting an off signal to the PD power supply module, so as to make the PD power supply module stop work; The PD sampling control unit is used for outputting a driving signal to the PD power supply module when detecting a power supply voltage of the power supply, so as to make the PD power supply module start work; Or outputting a driving signal to the PD power supply module when detecting access of the load device, so as to make the PD power supply module start work.

3. The power supply control circuit of claim 2, wherein, The photovoltaic sampling control unit comprises a photovoltaic sampling subunit and a photovoltaic control subunit; The photovoltaic sampling subunit is connected with the photovoltaic power supply module and the photovoltaic control subunit respectively, and the photovoltaic control subunit is connected with the PD power supply module; the photovoltaic sampling subunit is further used for connecting the photovoltaic input source; The photovoltaic sampling subunit is used for outputting a control signal to the photovoltaic power supply module when collecting a photovoltaic voltage of the photovoltaic input source, so as to make the photovoltaic power supply module start work; and The photovoltaic control subunit outputs an off signal to the PD power supply module when the photovoltaic voltage of the photovoltaic input source is collected, so as to control the PD power supply module to stop working.

4. The power supply control circuit of claim 3, wherein, The photovoltaic sampling subunit comprises a resistor R1 and a resistor R2; The first end of the resistor R1 is used for connecting the photovoltaic input source, the second end of the resistor R1 is connected with the resistor R2 and the photovoltaic power supply module and the photovoltaic control subunit respectively, and the second end of the resistor R2 is used for grounding.

5. The power supply control circuit of claim 3, wherein, The photovoltaic control subunit comprises a switch tube Q7, a resistor R11 and a resistor R12; The control end of the switch tube Q7 is connected with the photovoltaic sampling subunit through the resistor R11, the control end of the switch tube Q7 is also grounded through the resistor R12, the first end of the switch tube Q7 is connected with the PD power supply module, and the second end of the switch tube Q7 is used for grounding.

6. The power supply control circuit according to any one of claims 1 to 5, characterized by, The photovoltaic power supply module comprises a first control unit and a first switch unit; The first control unit is connected with the first switch unit and the detection control module respectively, the first switch unit is connected with the direct current conversion module, and the first switch unit is also used for connecting the photovoltaic input source; The first control unit is used for controlling the first switch unit to be closed according to the control signal after the control signal is received, so as to input the photovoltaic voltage into the direct current conversion module, so as to charge the battery based on the direct current conversion module.

7. The power supply control circuit of claim 6, wherein, The first control unit comprises a switch tube Q1, a resistor R3 and a resistor R4; The control end of the switch tube Q1 is connected with the detection control module through the resistor R3, the control end of the switch tube Q1 is also grounded through the resistor R4, the first end of the switch tube Q1 is connected with the first switch unit, and the second end of the switch tube Q1 is used for grounding.

8. The power supply control circuit of claim 7, wherein, The first switch unit comprises a switch tube Q2, a switch tube Q3, a resistor R5 and a resistor R6; The control end of the switch tube Q2 is connected with the first control unit through the resistor R5, the control end of the switch tube Q2 is also connected with the control end of the switch tube Q3, the first end of the switch tube Q2 is used for connecting the photovoltaic input source, the second end of the switch tube Q2 is connected with the second end of the switch tube Q3, the second end of the switch tube Q2 is also connected with the resistor R5 through the resistor R6, and the first end of the switch tube Q3 is connected with the direct current conversion module.

9. The power supply control circuit according to any one of claims 1 to 5, characterized by, The PD power supply module comprises a second control unit and a second switch unit; The second control unit is connected with the second switch unit and the detection control module respectively, the second switch unit is connected with the direct current conversion module, and the second switch unit is also used for connecting the power supply or the load device; The second control unit is used for controlling the second switch unit to be closed according to the driving signal when the off signal is not received, so as to input the power supply voltage into the direct current conversion module, so as to charge the battery based on the direct current conversion module; and When the shutdown signal is not received, the second switch unit is controlled to be closed according to the driving signal, so that the battery voltage output by the direct current conversion module is output to the load device, so as to discharge the battery based on the direct current conversion module.

10. An energy storage power supply, characterized by, The energy storage power supply comprises: a battery; and The power supply control circuit according to any one of claims 1-9.

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