Power supply circuit and electronic device

Abstract

A power supply circuit and electronic equipment belong to the technical field of power supply, through energy storage module, first DC converter and second DC converter are connected to the first node; the control circuit responds to the first type of connection confirmation signal, controls the first DC converter to convert the first DC power into the first power supply DC power; in response to the second type of connection confirmation signal, control the first DC converter converts the first input DC power into the second DC power; in response to the input signal meeting the first preset condition, control the second DC converter converts the third DC power into the second power supply DC power; in response to the input signal meeting the second preset condition, control the second DC converter converts the second input DC power into the fourth DC power; the energy storage DC power includes the battery voltage and the charging DC power; the first DC power, the second DC power, the third DC power, the fourth DC power and the energy storage DC power converge in the first node; therefore, the use convenience is improved, and the function of the product is enriched.

Description

Technical Field

[0001] This application belongs to the field of power supply technology, and in particular relates to a power supply circuit and electronic device. Background Technology

[0002] Lithium battery packs used in light electric vehicles such as electric bicycles, electric motorcycles, electric tricycles, electric skateboards, and balance bikes typically consist of multiple lithium batteries connected in series to achieve the required voltage (e.g., 36V, 48V, 72V). They are then equipped with a battery management system (BMS) for necessary detection, protection, and control (overvoltage, undervoltage, overcurrent, short circuit, overtemperature, and monitoring of remaining charge). Depending on the different lithium battery material systems (e.g., ternary lithium, lithium manganese oxide, lithium iron phosphate) and load voltage levels (e.g., 36V, 48V, 60V, 72V), the required number of batteries connected in series is commonly between 10 and 25, or even higher.

[0003] The relevant power supply circuit uses multiple batteries connected in series to obtain a sufficiently high voltage B+ / B-. The basic circuit structure of the BMS includes a fuse, a charging control switch, a discharging control switch, a current sampling resistor, and a control circuit. The basic function of the BMS is to protect the lithium battery during its charging and discharging process and to accurately measure the remaining battery capacity.

[0004] In practical applications, this type of battery pack is mounted on light vehicles to power the vehicle's electronic components (including electronic accessories such as DC motors and instruments). To obtain electrical energy, the battery pack needs to be equipped with a dedicated charger, which is generally external.

[0005] However, as can be seen from the above architecture, it brings about the following problems, which have become bottlenecks restricting the development of the industry: 1. It requires a dedicated charger, which is inconvenient to charge and has poor compatibility, resulting in resource waste, increased supporting costs and environmental pressure; 2. Limited functionality makes it difficult to charge users' portable electronic devices, thus restricting the user experience.

[0006] Therefore, the related power supply circuits are not convenient to use and have limited functionality. Summary of the Invention

[0007] The purpose of this application is to provide a power supply circuit and electronic device, which aims to solve the problems of poor ease of use and limited functionality of related power supply circuits.

[0008] This application provides a power supply circuit connected to an energy storage module, including a control circuit, a first DC-DC converter, and a second DC-DC converter; the energy storage module, the first DC-DC converter, and the second DC-DC converter are all connected to a first node; The control circuit, connected to the first DC-DC converter and the second DC-DC converter, is configured to: in response to a first type of connection confirmation signal, control the first DC-DC converter to convert a first DC power supply to a first power supply DC power supply; in response to a second type of connection confirmation signal, control the first DC-DC converter to convert the first input DC power supply to a second DC power supply; in response to an input signal satisfying a first preset condition, control the second DC-DC converter to convert a third DC power supply to a second power supply DC power supply; and in response to an input signal satisfying a second preset condition, control the second DC-DC converter to convert the second input DC power supply to a fourth DC power supply. The first type of DC power includes the first DC power and the second DC power, the second type of DC power includes the third DC power and the fourth DC power, and the energy storage DC power includes the battery voltage provided by the energy storage module and the charging DC power connected to the energy storage module; one of the first type of DC power, one of the second type of DC power and one of the energy storage DC power converge at the first node; The input signal includes the second input DC power and / or communication signal.

[0009] This invention also provides an electronic device, which includes the power supply circuit described above.

[0010] The beneficial effects of this invention compared to the prior art are as follows: Since the control circuit can control the first DC converter to convert the first DC power to the first power supply DC power, and also control the first DC converter to convert the first input DC power to the second DC power, the first DC converter can be externally connected to a first power receiving device or a first power supply device. Simultaneously, the control circuit can control the second DC converter to convert the third DC power to the second power supply DC power, and also control the second DC converter to convert the second input DC power to the fourth DC power, so the second DC converter can also be externally connected to a second power receiving device or a second power supply device. Furthermore, the energy storage module can provide battery voltage that can be connected to charging DC power; therefore, there is no need to configure a dedicated charger to charge the energy storage module, saving hardware costs and improving ease of use. It also enables charging of externally connected power receiving devices, enriching the product's functionality and improving ease of use. Attached Figure Description

[0011] To more clearly illustrate the technical inventions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1This is a schematic diagram of a power supply circuit provided in an embodiment of this application; Figure 2 This is a schematic diagram of another structure of the power supply circuit provided in one embodiment of this application; Figure 3 This is a schematic diagram of another structure of the power supply circuit provided in one embodiment of this application; Figure 4 This is a schematic diagram of another structure of the power supply circuit provided in one embodiment of this application; Figure 5 A schematic diagram of a control circuit in a power supply circuit provided in an embodiment of this application; Figure 6 This is a partial example circuit schematic diagram of a power supply circuit provided in an embodiment of this application. Detailed Implementation

[0013] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0014] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0015] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0016] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0017] Figure 1 A schematic diagram of the power supply circuit provided in a preferred embodiment of this application is shown. For ease of explanation, only the parts relevant to this embodiment are shown, and are described in detail below: The aforementioned power supply circuit is connected to the energy storage module 80 and includes a control circuit 10, a first DC-DC converter 20, and a second DC-DC converter 30; the energy storage module 80, the first DC-DC converter 20, and the second DC-DC converter 30 are all connected to the first node A.

[0018] The control circuit 10, connected to the first DC-DC converter 20 and the second DC-DC converter 30, is configured to: in response to a first type of connection confirmation signal, control the first DC-DC converter 20 to convert the first DC power to the first power supply DC power; in response to a second type of connection confirmation signal, control the first DC-DC converter 20 to convert the first input DC power to the second DC power; in response to an input signal satisfying a first preset condition, control the second DC-DC converter 30 to convert the third DC power to the second power supply DC power; and in response to an input signal satisfying a second preset condition, control the second DC-DC converter 30 to convert the second input DC power to the fourth DC power.

[0019] The first type of DC power includes first DC power and second DC power, the second type of DC power includes third DC power and fourth DC power, and the energy storage DC power includes the battery voltage provided by the energy storage module and the charging DC power connected to the energy storage module; one of the first type of DC power, one of the second type of DC power and one of the energy storage DC power converge at the first node A.

[0020] The input signals include a second input DC power and / or a communication signal.

[0021] It should be noted that the energy storage module 80 includes a battery pack. The energy storage module in the related power circuit contains a large number of cells, numerous series and parallel welding points, complex manufacturing processes, complex quality control, and high overall cost. Furthermore, it is difficult to recycle and dismantle after retirement, making secondary utilization challenging. Compared to traditional battery packs, this application uses cells with larger individual capacities connected in series. While achieving the same voltage, the number of cells in series is significantly reduced compared to traditional methods, facilitating solderless assembly and easy dismantling. The number of cells managed by the control circuit is correspondingly reduced, and the number of charging switching transistors can be reduced, resulting in lower costs and facilitating the recycling, dismantling, and secondary utilization of retired batteries.

[0022] The first DC-DC converter 20 includes a BUCK-BOOST circuit, and the second DC-DC converter 30 may include an LLC circuit and a BUCK circuit. Communication signals include a second connection confirmation signal and an I2C signal.

[0023] It is understood that both the first DC-DC converter 20 and the second DC-DC converter 30 can perform bidirectional DC-DC conversion. The first port connected to the first DC-DC converter 20 can be left unconnected, connected to the first power receiving device, or connected to the first power supply device. Similarly, the second port connected to the second DC-DC converter 30 can also be left unconnected, connected to the second power receiving device, or connected to the second power supply device. Current can flow between the first power receiving device / first power supply device, the second power receiving device / second power supply device, and the energy storage module 80 to redistribute electrical energy. Therefore, the energy storage module 80 can be charged without configuring a dedicated charger, saving hardware costs and improving ease of use. It also enables charging of external power receiving devices, enriching the product's functionality and improving ease of use.

[0024] In one embodiment, the first preset condition is: the second input DC voltage is less than a preset voltage; and / or The communication signal is a Class I communication signal; The second preset condition is: the second input DC voltage is greater than or equal to the preset voltage; and / or The communication signal is a type II communication signal.

[0025] It is understood that the second port connected to the second DC converter 30 is connected to a second power receiving device or a second power supply device. The input signal is the signal output by the second power receiving device or the second power supply device to the second DC converter 30. The second power receiving device outputs an input signal that meets the first preset condition, and the second power supply device outputs an input signal that meets the second preset condition.

[0026] Through the above technical solution, the control circuit 10 can determine whether the external device is a second power receiving device or a second power supply device according to the type of communication signal, and then output the corresponding type of second drive signal to control the working mode of the second DC converter 30.

[0027] like Figure 2 As shown, the power supply circuit also includes a switching circuit 40.

[0028] The control circuit 10 is also connected to the switching circuit 40, specifically configured to: output a first type of first drive signal and a switching signal in response to a first type of connection confirmation signal; and disconnect the output of the second drive signal in response to the disconnection of the input signal.

[0029] The switching circuit 40 is configured to transmit battery voltage in response to a switching signal.

[0030] The first DC-DC converter 20 is specifically configured to convert a first DC power supply into a first power supply DC power supply in response to a first type of first drive signal; wherein the first DC power supply is the battery voltage.

[0031] The second DC-DC converter 30 is specifically configured to stop operating in response to the disconnection of the second drive signal.

[0032] With the above technical solution, when the second port connected to the second DC converter 30 is unconnected and the first port connected to the first DC converter 20 is connected to the first power receiving device, the control circuit 10 only receives the first type of connection confirmation signal, and controls the first DC converter 20 to convert the first DC power (i.e., battery voltage) into the first power supply DC power based on the first type of connection confirmation signal, thereby realizing power supply only to the first power receiving device.

[0033] like Figure 2 As shown, the power supply circuit also includes a switching circuit 40.

[0034] The control circuit 10 is also connected to the switching circuit 40, and is specifically configured to: disconnect the output of the first drive signal in response to the disconnection of the connection confirmation signal; and output the first type of second drive signal and the switching signal in response to the input signal that meets the first preset condition.

[0035] The switching circuit 40 is configured to transmit battery voltage in response to a switching signal.

[0036] The first DC-DC converter 20 is specifically configured to stop working in response to the disconnection of the first type of first drive signal.

[0037] The second DC-DC converter 30 is specifically configured to convert the third DC power into the second power supply DC power in response to the first type of second drive signal; wherein the third DC power is the battery voltage.

[0038] With the above technical solution, when the second port connected to the second DC converter 30 is connected to the second power receiving device and the first port connected to the first DC converter 20 is unconnected, the control circuit 10 only receives the input signal that meets the first preset condition, and controls the second DC converter 30 to convert the third DC power (i.e., battery voltage) into the second power supply DC power based on the input signal that meets the first preset condition, thereby realizing power supply only to the second power receiving device.

[0039] like Figure 2 As shown, the power supply circuit also includes a switching circuit 40.

[0040] The control circuit 10 is configured to output a second type of first drive signal and a switch signal in response to a second type of connection confirmation signal; and to disconnect the output of the second drive signal in response to the disconnection of the input signal.

[0041] The first DC-DC converter 20 is specifically configured to convert the first input DC power into a second DC power in response to a second type of first drive signal; wherein the second DC power is a charging DC power.

[0042] The switching circuit 40 is configured to transmit charging DC power to charge the energy storage module 80 in response to a switching signal.

[0043] The second DC-DC converter 30 is specifically configured to stop operating in response to the disconnection of the second drive signal.

[0044] With the above technical solution, when the second port connected to the second DC converter 30 is unconnected and the first port connected to the first DC converter 20 is connected to the first power supply device, the control circuit 10 only receives the second type of connection confirmation signal, and controls the first input DC power connected to the first DC converter 20 to be converted into the second DC power (i.e., charging DC power) based on the second type of connection confirmation signal, thereby realizing the charging of the energy storage module 80 only through the first input DC power.

[0045] like Figure 2 As shown, the power supply circuit also includes a switching circuit 40.

[0046] The control circuit 10 is also connected to the switching circuit 40, and is specifically configured to: disconnect the output of the first drive signal in response to the disconnection of the connection confirmation signal; and output the second type of second drive signal and the switching signal in response to the input signal that meets the second preset condition.

[0047] The first DC-DC converter 20 is specifically configured to stop working in response to the disconnection of the first drive signal.

[0048] The second DC-DC converter 30 is specifically configured to convert the second input DC power into a fourth DC power in response to a second type of second drive signal, wherein the fourth DC power is a charging DC power.

[0049] The switching circuit 40 is configured to transmit charging DC power to charge the energy storage module 80 in response to a switching signal.

[0050] With the above technical solution, when the second port connected to the second DC converter 30 is connected to the second power supply device and the first port connected to the first DC converter 20 is unconnected, the control circuit 10 only receives the input signal that meets the second preset condition, and controls the second DC converter 30 to convert the received second input DC power into the fourth DC power (i.e., charging DC power) based on the input signal that meets the second preset condition, thus realizing the charging of the energy storage module 80 only through the second input DC power.

[0051] like Figure 2 As shown, the power supply circuit also includes a switching circuit 40.

[0052] The control circuit 10 is also connected to the switching circuit 40, and is specifically configured to output a first type of first driving signal, a first type of second driving signal, and a switching signal in response to an input signal that meets a first preset condition and a first type of connection confirmation signal.

[0053] The switching circuit 40 is configured to transmit battery voltage in response to a switching signal.

[0054] The first DC-DC converter 20 is specifically configured to convert the first DC power into the first power supply DC power in response to a first type of first drive signal.

[0055] The second DC-DC converter 30 is specifically configured to convert the third DC power into the second power supply DC power in response to the first type of second drive signal.

[0056] Both the first and third DC currents are battery voltages.

[0057] Through the above technical solution, when a second power receiving device is connected to the second port connected to the second DC converter 30 and a first power receiving device is connected to the first port connected to the first DC converter 20, the control circuit 10 receives a first type of connection confirmation signal and an input signal that meets the first preset condition. Based on the input signal that meets the first preset condition, the control circuit 10 controls the second DC converter 30 to convert the third DC power (i.e., battery voltage) into the second power supply DC power, and based on the first type of connection confirmation signal, converts the first DC power (i.e., battery voltage) into the first power supply DC power, thereby realizing the simultaneous supply of power to the first power receiving device and the second power receiving device.

[0058] like Figure 2 As shown, the power supply circuit also includes a switching circuit 40.

[0059] The control circuit 10 is configured to output a second type of first drive signal, a second type of second drive signal, and a switch signal in response to an input signal that meets a second preset condition and a second type of connection confirmation signal; The first DC-DC converter 20 is specifically configured to convert the first input DC power into a second DC power in response to a second type of first drive signal.

[0060] The second DC-DC converter 30 is specifically configured to convert the second input DC power into a fourth DC power in response to a second type of second drive signal, wherein the second DC power and the fourth DC power are combined into a charging DC power.

[0061] The switching circuit 40 is configured to transmit charging DC power to charge the energy storage module 80 in response to a switching signal.

[0062] Through the above technical solution, when the second port connected to the second DC converter 30 is connected to a second power supply device and the first port connected to the first DC converter 20 is connected to a first power supply device, the control circuit 10 receives a second type of connection confirmation signal and an input signal that meets the second preset condition. Based on the input signal that meets the second preset condition, it controls the second DC converter 30 to convert the second input DC power into a fourth DC power, and based on the second type of connection confirmation signal, it converts the first input DC power into a second DC power. The second DC power and the fourth DC power converge into a charging DC power. This achieves simultaneous charging of the energy storage module 80 by the first power supply device and the second power supply device.

[0063] like Figure 2 As shown, the power supply circuit also includes a switching circuit 40.

[0064] The control circuit 10 is configured to disconnect the switch signal in response to a protection command, and to output a first type of first drive signal, a second type of second drive signal, and a switch signal in response to an input signal of a second preset condition and a first type of connection confirmation signal.

[0065] In response to the disconnection of the switching signal, the switching circuit 40 disconnects the connection between the first DC converter 20, the second DC converter 30 and the energy storage module 80.

[0066] The second DC-DC converter 30 is specifically configured to convert the second input DC power into a fourth DC power in response to a second type of second drive signal; wherein the fourth DC power is the first DC power.

[0067] The first DC-DC converter 20 is specifically configured to convert the first DC power into the first power supply DC power in response to a first type of first drive signal.

[0068] Through the above technical solution, the connection between the first DC converter 20, the second DC converter 30 and the energy storage module 80 is disconnected; and when the second port connected to the second DC converter 30 is connected to a second power supply device and the first port connected to the first DC converter 20 is connected to a first power receiving device, the control circuit 10 receives a first type of connection confirmation signal and an input signal that meets the second preset condition, and controls the second DC converter 30 to convert the second input DC power into a fourth DC power based on the input signal that meets the second preset condition, and converts the first DC power into a first power supply DC power based on the first type of connection confirmation signal, and the fourth DC power is the first DC power; thus, the battery is protected, and the second power supply device supplies power to the first power receiving device.

[0069] like Figure 2 As shown, the power supply circuit also includes a switching circuit 40.

[0070] The control circuit 10 is configured to disconnect the switch signal in response to a protection command, and to output a second type of first drive signal, a first type of second drive signal, and a switch signal in response to an input signal of a first preset condition and a second type of connection confirmation signal.

[0071] In response to the disconnection of the switching signal, the switching circuit 40 disconnects the connection between the first DC converter 20, the second DC converter 30 and the energy storage module 80.

[0072] The first DC-DC converter 20 is specifically configured to convert the first input DC power into a second DC power in response to a second type of first drive signal; wherein the second DC power is a third DC power.

[0073] The second DC-DC converter 30 is specifically configured to convert the third DC power into the second power supply DC power in response to the first type of second drive signal.

[0074] Through the above technical solution, when a second power receiving device is connected to the second port connected to the second DC converter 30 and a first power supply device is connected to the first port connected to the first DC converter 20, the control circuit 10 receives a second type of connection confirmation signal and an input signal that meets the first preset condition. Based on the input signal that meets the first preset condition, it controls the second DC converter 30 to convert the third DC power into the second power supply DC power, and based on the second type of connection confirmation signal, it converts the first input DC power into the second DC power, and the second DC power becomes the third DC power; thus realizing that the first power supply device supplies power to the second power receiving device.

[0075] like Figure 3 As shown, the power supply circuit also includes a detection circuit 50.

[0076] The detection circuit 50 is connected to the second DC-DC converter 30 and is configured to detect the electrical parameters of the second DC power supply to output a detection signal.

[0077] The control circuit 10 is also configured to obtain the second required power based on the detection signal.

[0078] It is understood that electrical parameters include current, voltage, and / or power.

[0079] The above technical solution provides the required power of the second power receiving device (second required power), making precise control of the power supply circuit possible and improving control accuracy.

[0080] like Figure 4 As shown, the power supply circuit also includes a switching circuit 40.

[0081] The control circuit 10 is also connected to the switch circuit 40, and is specifically configured to: output a switch signal in response to the disconnection of the protection command; and output a second type of first drive signal and a first type of second drive signal in response to an input signal that meets the first preset condition and a second type of connection confirmation signal, and in response to the first output power carried by the second type of connection confirmation signal being greater than the second required power.

[0082] The first DC-DC converter 20 is specifically configured to convert the first input DC power into a second DC power in response to a second type of first drive signal; wherein the second DC power is split into a third DC power and a charging DC power.

[0083] The second DC-DC converter 30 is specifically configured to convert the third DC power into the second power supply DC power in response to the first type of second drive signal.

[0084] The switching circuit 40 is configured to transmit charging DC power to charge the energy storage module 80 in response to a switching signal.

[0085] Through the above technical solution, a first power supply device is connected to the first port of the first DC converter 20, and a second power receiving device is connected to the second port of the second DC converter 30. When the first DC converter 20 and the second DC converter 30 are connected to the energy storage module 80, and the output power of the first power supply device is greater than the required power of the second power receiving device, the control circuit 10 receives a second type of connection confirmation signal and an input signal that meets the first preset condition. Based on the input signal that meets the first preset condition, the control circuit 10 controls the second DC converter 30 to convert the third DC power into the second power supply DC power, and based on the second type of connection confirmation signal, converts the first input DC power into the second DC power. The second DC power is split into the third DC power and the charging DC power. The charging DC power is used to charge the energy storage module 80. This realizes that the first power supply device can simultaneously supply power to the second power receiving device and charge the energy storage module 80.

[0086] like Figure 4 As shown, the power supply circuit also includes a switching circuit 40.

[0087] The control circuit 10 is also connected to the switch circuit 40, and is specifically configured to: output a switch signal in response to the disconnection of the protection command; and output a second type of first drive signal and a first type of second drive signal in response to an input signal that meets the first preset condition and a second type of connection confirmation signal, and in response to the first output power carried by the second type of connection confirmation signal being less than the second required power.

[0088] The switching circuit 40 is configured to transmit battery voltage in response to a switching signal.

[0089] The first DC-DC converter 20 is specifically configured to convert the first input DC power into a second DC power in response to a second type of first drive signal; wherein the second DC power and the battery voltage are combined to form a third DC power.

[0090] The second DC-DC converter 30 is specifically configured to convert the third DC power into the second power supply DC power in response to the first type of second drive signal.

[0091] Through the above technical solution, a first power supply device is connected to the first port of the first DC converter 20, and a second power receiving device is connected to the second port of the second DC converter 30. When the first DC converter 20 and the second DC converter 30 are connected to the energy storage module 80, and the output power of the first power supply device is less than the required power of the second power receiving device, the control circuit 10 receives a second type of connection confirmation signal and an input signal that meets the first preset condition. Based on the input signal that meets the first preset condition, the control circuit 10 controls the second DC converter 30 to convert the third DC power into the second power supply DC power, and based on the second type of connection confirmation signal, converts the first input DC power into the second DC power. The second DC power and the battery voltage converge into the third DC power, and the energy storage module 80 provides the battery voltage. This realizes that the energy storage module 80 and the first power supply device can simultaneously supply power to the second power receiving device.

[0092] like Figure 4 As shown, it also includes a switching circuit 40.

[0093] The control circuit 10 is also connected to the switch circuit 40, and is specifically configured to: output a switch signal in response to the disconnection of the protection command; and output a second type of first drive signal and a first type of second drive signal in response to an input signal that meets the first preset condition and a second type of connection confirmation signal, and in response to the first output power carried by the second type of connection confirmation signal being equal to the second required power.

[0094] The first DC-DC converter 20 is specifically configured to convert the first input DC power into a second DC power in response to a second type of first drive signal; wherein the second DC power is a third DC power.

[0095] The second DC-DC converter 30 is specifically configured to convert the third DC power into the second power supply DC power in response to the first type of second drive signal.

[0096] Through the above technical solution, the first port connected to the first DC converter 20 is connected to the first power supply device, and the second port connected to the second DC converter 30 is connected to the second power receiving device. When the first DC converter 20 and the second DC converter 30 are connected to the energy storage module 80, and the output power of the first power supply device is equal to the required power of the second power receiving device, the control circuit 10 receives the second type of connection confirmation signal and the input signal that meets the first preset condition. Based on the input signal that meets the first preset condition, the control circuit 10 controls the second DC converter 30 to convert the third DC power into the second power supply DC power, and based on the second type of connection confirmation signal, converts the first input DC power into the second DC power. The second DC power is the third DC power, thus realizing that the first power supply device can simultaneously supply power to the second power receiving device.

[0097] like Figure 3 As shown, the power supply circuit also includes a detection circuit 50.

[0098] The detection circuit 50 is connected to the second DC-DC converter 30 and is configured to detect the electrical parameters of the second input DC power supply to output a detection signal.

[0099] The control circuit 10 is also configured to obtain a second output power based on a detection signal and / or a communication signal.

[0100] The above technical solution provides the output power of the second power supply device (second output power), which makes precise control of the power supply circuit possible and improves the control accuracy.

[0101] like Figure 4 As shown, the power supply circuit also includes a switching circuit 40.

[0102] The control circuit 10 is also connected to the switch circuit 40, and is specifically configured to: output a switch signal in response to the disconnection of the protection command; and output a first type of first drive signal and a second type of second drive signal in response to an input signal that meets the second preset condition and a first type of connection confirmation signal, and in response to the first type of connection confirmation signal carrying a first demand power greater than the second output power.

[0103] The switching circuit 40 is configured to transmit battery voltage in response to a switching signal.

[0104] The second DC-DC converter 30 is specifically configured to convert the second input DC power into a fourth DC power in response to a second type of second drive signal; wherein the battery voltage and the fourth DC power are combined to form a first DC power.

[0105] The first DC-DC converter 20 is specifically configured to convert the first DC power into the first power supply DC power in response to a first type of first drive signal.

[0106] Through the above technical solution, a first power receiving device is connected to the first port of the first DC converter 20, and a second power supply device is connected to the second port of the second DC converter 30. When the first DC converter 20 and the second DC converter 30 are connected to the energy storage module 80, and the output power of the first power receiving device is greater than the required power of the second power supply device, the control circuit 10 receives a second type of connection confirmation signal and an input signal that meets the first preset condition. Based on the input signal that meets the first preset condition, the control circuit 10 controls the second DC converter 30 to convert the second input DC power into a fourth DC power, and based on the first type of connection confirmation signal, converts the first DC power into a first power supply DC power. The battery voltage and the fourth DC power are combined to form the first DC power. This enables the energy storage module 80 and the second power supply device to simultaneously supply power to the first power receiving device.

[0107] like Figure 4 As shown, the power supply circuit also includes a switching circuit 40.

[0108] The control circuit 10 is also connected to the switch circuit 40, and is specifically configured to: output a switch signal in response to the disconnection of the protection command; and output a first type of first drive signal and a second type of second drive signal in response to an input signal that meets the second preset condition and a first type of connection confirmation signal, and in response to the first type of connection confirmation signal carrying a first demand power that is less than the second output power.

[0109] The second DC-DC converter 30 is specifically configured to convert the second input DC power into a fourth DC power in response to a second type of second drive signal; wherein the fourth DC power is split into a first DC power and a charging DC power.

[0110] The first DC-DC converter 20 is specifically configured to convert the first DC power into the first power supply DC power in response to a first type of first drive signal.

[0111] The switching circuit 40 is configured to transmit charging DC power to charge the energy storage module 80 in response to a switching signal.

[0112] Through the above technical solution, a first power receiving device is connected to the first port of the first DC converter 20, and a second power supply device is connected to the second port of the second DC converter 30. When the first DC converter 20 and the second DC converter 30 are connected to the energy storage module 80, and the output power of the first power receiving device is less than the required power of the second power supply device, the control circuit 10 receives a second type of connection confirmation signal and an input signal that meets the first preset condition. Based on the input signal that meets the first preset condition, the control circuit 10 controls the second DC converter 30 to convert the second input DC power into a fourth DC power, and based on the first type of connection confirmation signal, converts the first DC power into a first power supply DC power. The fourth DC power is split into the first DC power and the charging DC power. This enables the second power supply device to simultaneously supply power to the first power receiving device and charge the energy storage module 80.

[0113] like Figure 4 As shown, the power supply circuit also includes a switching circuit 40.

[0114] The control circuit 10 is also connected to the switch circuit 40, and is specifically configured to: output a switch signal in response to the disconnection of the protection command; and output a first type of first drive signal and a second type of second drive signal in response to an input signal that meets the second preset condition and a first type of connection confirmation signal, and in response to the first type of connection confirmation signal carrying a first demand power equal to the second output power.

[0115] The second DC-DC converter 30 is specifically configured to convert the second input DC power into a fourth DC power in response to a second type of second drive signal; wherein the fourth DC power is the first DC power.

[0116] The first DC-DC converter 20 is specifically configured to convert the first DC power supply into a first power supply DC power supply in response to a first type of first drive signal.

[0117] Through the above technical solution, a first power receiving device is connected to the first port of the first DC converter 20, and a second power supply device is connected to the second port of the second DC converter 30. When the first DC converter 20 and the second DC converter 30 are connected to the energy storage module 80, and the output power of the first power receiving device is equal to the required power of the second power supply device, the control circuit 10 receives a second type of connection confirmation signal and an input signal that meets the first preset condition. Based on the input signal that meets the first preset condition, the control circuit 10 controls the second DC converter 30 to convert the second input DC power into a fourth DC power, and based on the first type of connection confirmation signal, converts the first DC power into a first power supply DC power; wherein, the fourth DC power is the first DC power; thus realizing the second power supply device supplying power to the first power receiving device.

[0118] In one embodiment, the first DC-DC converter 20 has a first input / output terminal and a second input / output terminal; In the first DC-DC converter 20, the switching transistors connected to the first input / output terminal are multiplexed as the power switching transistors and charging control switching transistors of the first DC-DC converter 20, and the switching transistors connected to the second input / output terminal are multiplexed as the power switching transistors and discharging control switching transistors of the first DC-DC converter 20. The first input / output terminal is used to connect to the first input DC power and output the first power supply DC power, and the second input / output terminal is used to connect to the first DC power and output the second DC power.

[0119] By reusing the functions of the switching transistors, the need for a separate charge / discharge control switch in traditional solutions is eliminated. This reduces the number of electronic components, directly lowering the BOM cost. It also reduces the PCB area requirement, further saving system costs. The reduction in the number of components and the smaller PCB area contribute to the miniaturization of the overall system. Furthermore, the reusing of the switching transistors simplifies the circuit topology and reduces the complexity of system design. On the other hand, it reduces the number of conducting devices in the current path, lowers the total conduction loss of the system, and improves the overall energy conversion efficiency.

[0120] In one embodiment, the second DC-DC converter 30 includes an LLC circuit or a Buck-Boost circuit.

[0121] In one embodiment, such as Figure 5 As shown, the control circuit 10 includes a main control module 11, a control module 12, and a drive module 13; The main control module 11 is used to respond to a first type of first wired communication signal and output a first type of second wired communication signal; respond to a second type of first wired communication signal and output a second type of second wired communication signal; respond to an input signal satisfying a first preset condition and output a first type of PWM signal; respond to an input signal satisfying a second preset condition and output a second type of PWM signal.

[0122] The control module 12, connected to the first DC-DC converter 20 and the main control module 11, is used to output a first type of first wired communication signal in response to a first type of connection confirmation signal; output a second type of first wired communication signal in response to a second type of connection confirmation signal; output a first type of first drive signal in response to a first type of second wired communication signal to control the first DC-DC converter 20 to convert the first DC power into the first power supply DC power; and output a second type of first drive signal in response to a second type of second wired communication signal to control the first DC-DC converter 20 to convert the first input DC power into the second DC power.

[0123] The drive module 13 is connected to the second DC-DC converter 30 and the main control module 11. It is used to output a first type of second drive signal in response to a first type of first PWM signal to control the second DC-DC converter 30 to convert the third DC power into the second power supply DC power; and to output a second type of PWM signal in response to a second type of first PWM signal to control the second DC-DC converter 30 to convert the second input DC power into the fourth DC power.

[0124] The above technical solution integrates the control of the first DC converter 20 and the second DC converter 30 into the same main control module 11, which simplifies the hardware design, reduces the cost, and reduces the area of ​​the PCB board.

[0125] It is understandable that the control circuit 10 also includes a sampling circuit 14.

[0126] The sampling circuit 14 is connected to the energy storage module 80 and is used to detect the charging and discharging current of the energy storage module 80 to output a sampling signal.

[0127] The main control module 11 is also connected to the sampling circuit 14 and is used to output a switching signal based on the detection signal and the battery voltage.

[0128] By detecting the charging and discharging current to output a switching signal, overcurrent protection and overpower protection of the energy storage module 80 are achieved, while also providing the possibility of obtaining the remaining power of the energy storage module 80.

[0129] Figure 6 A partial example circuit structure provided by an embodiment of the present invention is shown. For ease of explanation, only the parts related to the embodiment of the present invention are shown, and are described in detail below: It should be noted that the switching circuit 40 includes a switch driver module 1342 and a main switch 41.

[0130] The switch drive module 1342 is connected to the main control module 11 (control circuit 10) and the main switch, and is used to output a switch drive signal based on the switch signal to control the on and off of the main switch 41.

[0131] By setting up the switch driver module 1342, the switch signal is amplified, thereby realizing the control of a high-power power supply circuit.

[0132] The main control module 11 includes a microprocessor U1; the clock terminal SCK1 and the data terminal SDA1 of the microprocessor U1 together constitute the sampling signal input terminal of the main control module 11, which is connected to the sampling circuit 14 to receive the sampling signal; the first general-purpose input / output terminal PB11 of the microprocessor U1 constitutes the first wired communication signal input terminal of the main control module 11, which is connected to the control module 12 to receive the first wired communication signal; the second general-purpose input / output terminal PB10 of the microprocessor U1 constitutes the second wired communication signal output terminal of the main control module 11, which is connected to the control module 12 to output the second wired communication signal; the third general-purpose input / output terminal PB12 of the microprocessor U1 constitutes the switch signal output terminal of the main control module 11, which is connected to the switch circuit 40 to output the switch signal; the fourth general-purpose input / output terminal PB11 of the microprocessor U1 constitutes the switch signal output terminal of the main control module 11, which is connected to the switch circuit 40 to output the switch signal; the fourth general-purpose input / output terminal PB11 of the microprocessor U1 constitutes the switch signal output terminal of the main control module 11, which is connected to the switch circuit 40 to output the switch signal; the fourth general-purpose input / output terminal PB11 of the microprocessor U1 constitutes the switch signal input ... The input / output terminal PB13 forms the battery voltage input terminal of the main control module 11, which is connected to the energy storage module 80 to receive the battery voltage. The fifth general-purpose input / output terminal PB14 of the microprocessor U1 forms the DC voltage input terminal of the main control module 11, which is connected to the DC-DC conversion module to receive the voltage of the second input DC power. The sixth general-purpose input / output terminal PA10, the seventh general-purpose input / output terminal PA11, the eighth general-purpose input / output terminal PA12, the ninth general-purpose input / output terminal PA13, the tenth general-purpose input / output terminal PA14, and the eleventh general-purpose input / output terminal PA15 of the microprocessor U1 together form the PWM signal output terminal of the main control module 11, which is connected to the drive module 13 to output the PWM signal.

[0133] Control module 12 includes PD controller U2 and Buck-Boost controller U3; The transmitting end TXC of PD controller U2 constitutes the first wired communication signal output terminal of control module 12, connected to the main control module 11, to output the first wired communication signal; the receiving end RXC of PD controller U2 constitutes the second wired communication signal input terminal of control module 12, connected to the main control module 11, to receive the second wired communication signal; the first connection confirmation signal input terminal CC1 and the second connection confirmation signal input terminal CC2 of PD controller U2 together constitute the connection confirmation signal input terminal of control module 12, to receive the connection confirmation signal; the clock terminal MSCLA of PD controller U2 is connected to the clock terminal SCL of Buck-Boost controller U3, and the data terminal MSDAA of PD controller U2 is connected to the data terminal SDA of Buck-Boost controller U3; B The first high-side drive terminal HG1, the first low-side drive terminal LG1, the second high-side drive terminal HG2, and the second low-side drive terminal LG2 of the Buck-Boost controller U3 constitute the first drive signal output terminal of the control module 12, which is connected to the first DC-DC converter 20 to output the first drive signal; the input voltage terminal Vin of the Buck-Boost controller U3 is connected to the first DC-DC converter 20 to connect to the first power supply DC and the first input DC; the output voltage terminal Vout of the Buck-Boost controller U3 is connected to the first DC-DC converter 20, the second DC-DC converter 30, and the energy storage module 80 to connect to the first DC and the second DC.

[0134] By connecting the first power supply DC and the first input DC to the input voltage terminal Vin of the Buck-Boost controller U3, and connecting the first DC and the second DC to the output voltage terminal Vout of the Buck-Boost controller U3, feedback of the first DC converter 20 is realized, and the output performance of the first DC converter 20 is stabilized.

[0135] The drive module 13 includes a first driver U4, a second driver U5, and a third driver U6. The first input terminal INA of the first driver U4, the second input terminal INB of the first driver U4, the first input terminal INA of the second driver U5, the second input terminal INB of the second driver U5, the first input terminal INA of the third driver U6, and the second input terminal INB of the third driver U6 together constitute the input terminal of the drive module 13, which is connected to the main control module 11 to receive PWM signals. The first output terminal OUTA of the first driver U4, the second output terminal OUTB of the first driver U4, the first output terminal OUTA of the second driver U5, the second output terminal OUTB of the second driver U5, the first output terminal OUTA of the third driver U5, and the second output terminal OUTB of the third driver U5 together constitute the output terminal of the drive module 13, which is connected to the DC-DC conversion module to output a second drive signal.

[0136] The first DC-DC converter 20 includes a first field-effect transistor Q1, a second field-effect transistor Q2, a third field-effect transistor Q3, a fourth field-effect transistor Q4, a first inductor L1, a first capacitor C1, and a second capacitor C2; The drain of the first field-effect transistor Q1 and the first terminal of the first capacitor C1 are connected and together form the first input-output terminal of the first DC-DC converter 20, so as to receive the first input DC power and output the first supply DC power; the drain of the second field-effect transistor Q2 and the first terminal of the second capacitor C2 are connected and together form the second input-output terminal of the first DC-DC converter 20, so as to receive the first DC power and output the second DC power; the gate of the first field-effect transistor Q1, the gate of the second field-effect transistor Q2, the gate of the third field-effect transistor Q3 and the gate of the fourth field-effect transistor Q4 together form the control terminal of the first DC-DC converter 20, which is connected to the control module 12 to receive the first drive signal; the source of the first field-effect transistor Q1 is connected to the first terminal of the first inductor L1 and the drain of the third field-effect transistor Q3, the source of the second field-effect transistor Q2 is connected to the second terminal of the first inductor L1 and the drain of the fourth field-effect transistor Q4, and the sources of the third field-effect transistor Q3 and the fourth field-effect transistor Q4, the second terminal of the first capacitor C1 and the second terminal of the second capacitor C2 are connected to the power supply ground.

[0137] It is understandable that the first field-effect transistor Q1 is a switch connected to the first input / output terminal of the first DC-DC converter 20, and the second field-effect transistor Q2 is a switch connected to the second input / output terminal of the first DC-DC converter 20. The first field-effect transistor Q1 is multiplexed as the power switch and charging control switch of the first DC-DC converter 20, and the second field-effect transistor Q2 is multiplexed as the power switch and discharging control switch of the first DC-DC converter 20.

[0138] The second DC-DC converter 30 includes a fifth field-effect transistor Q5, a sixth field-effect transistor Q6, a seventh field-effect transistor Q7, an eighth field-effect transistor Q8, a ninth field-effect transistor Q9, a tenth field-effect transistor Q10, a transformer T1, a second inductor L2, a third capacitor C3, a fourth capacitor C4, and a fifth capacitor C5; The taps of the primary winding of transformer T1 and the first terminal of the fourth capacitor C4 are connected and together form the second input / output terminal of the second DC-DC converter 30, which is connected to the first DC-DC converter 20 and the energy storage module 80 to receive the third DC power and output the fourth DC power; the first terminal of the fifth capacitor C5, the drain of the eighth field-effect transistor Q8 and the drain of the ninth field-effect transistor Q9 are connected and together form the first input / output terminal of the second DC-DC converter 30 to receive the second input DC power and output the second supply DC power; the gates of the fifth field-effect transistor Q5, the sixth field-effect transistor Q6, the seventh field-effect transistor Q7, the eighth field-effect transistor Q8, the ninth field-effect transistor Q9 and the tenth field-effect transistor Q10 together form the control terminal of the second DC-DC converter 30, which is connected to the drive module 13 to receive the second drive signal; The first end of the primary winding of transformer T1 is connected to the drain of the fifth field-effect transistor Q5. The second end of the primary winding of transformer T1 is connected to the drain of the sixth field-effect transistor Q6. The first end of the secondary winding of transformer T1 is connected to the first end of the third capacitor C3. The second end of the third capacitor C3 is connected to the first end of the second inductor L2. The second end of the second inductor L2 is connected to the source of the eighth field-effect transistor Q8 and the drain of the seventh field-effect transistor Q7. The second end of the secondary winding of transformer T1 is connected to the source of the ninth field-effect transistor Q9 and the drain of the tenth field-effect transistor Q10. The sources of the fifth field-effect transistor Q5, the sixth field-effect transistor Q6, the seventh field-effect transistor Q7, the tenth field-effect transistor Q10, the second end of the fourth capacitor C4, and the second end of the fifth capacitor C5 are all connected to the power supply ground.

[0139] The main switch includes the eleventh field-effect transistor Q11.

[0140] The energy storage module 80 includes a battery BAT, and a fuse F1 is installed between the energy storage module 80 and the main switch.

[0141] The following is a further explanation based on the working principle: The first connection confirmation signal input terminal CC1 and the second connection confirmation signal input terminal CC2 of the PD controller U2 are connected to the connection confirmation signal; the fifth general-purpose input / output terminal PB14 of the microprocessor U1 is connected to the voltage of the second input DC power.

[0142] Based on the first type of connection confirmation signal, PD controller U2 outputs a first type of wired communication signal from its transmitting terminal TXC to the first general-purpose input / output terminal PB11 of microprocessor U1. In response to the first type of wired communication signal, microprocessor U1 outputs a first type of second wired communication signal from its second general-purpose input / output terminal PB10 to the receiving terminal RXC of PD controller U2. Based on the first type of second wired communication signal, microprocessor U1 outputs a first type of serial communication signal from the clock terminal MSCLA and the data terminal MSDAA of PD controller U2 to Buck-Board. The data terminal SDA of the OST controller U3 and the clock terminal SCL of the Buck-Boost controller U3, based on the first type of serial communication signal, the Buck-Boost controller U3 outputs a first type of first drive signal from the first high-side drive terminal HG1, the first low-side drive terminal LG1, the second high-side drive terminal HG2, and the second low-side drive terminal LG2 of the Buck-Boost controller U3, to control the first DC-DC converter 20 to convert the first DC power into the first supply DC power; or Based on the second type of connection confirmation signal, PD controller U2 outputs a second type of wired communication signal from its transmitting terminal TXC to the first general-purpose input / output terminal PB11 of microprocessor U1. In response to the second type of first wired communication signal, microprocessor U1 outputs a second type of second wired communication signal from its second general-purpose input / output terminal PB10 to the receiving terminal RXC of PD controller U2. Based on the second type of second wired communication signal, microprocessor U1 outputs a second type of serial communication signal from the clock terminal MSCLA and the data terminal MSDAA of PD controller U2 to Buck-Board. The data terminal SDA of the OST controller U3 and the clock terminal SCL of the Buck-Boost controller U3 are connected. Based on the second type of serial communication signal, the Buck-Boost controller U3 outputs the second type of first drive signal from the first high-side drive terminal HG1, the first low-side drive terminal LG1, the second high-side drive terminal HG2, and the second low-side drive terminal LG2 of the Buck-Boost controller U3 to control the first DC-DC converter 20 to convert the input first DC power into the second DC power.

[0143] In response to the second input DC voltage being less than a preset voltage, microprocessor U1 outputs a type PWM signal from its sixth general-purpose input / output terminal PA10, seventh general-purpose input / output terminal PA11, eighth general-purpose input / output terminal PA12, ninth general-purpose input / output terminal PA13, tenth general-purpose input / output terminal PA14, and eleventh general-purpose input / output terminal PA1 to the first input terminal INA of the first driver U4, the second input terminal INB of the first driver U4, the first input terminal INA of the second driver U5, and the second input terminal INB of the second driver U5. Input terminal INB, first input terminal INA of third driver U6, and second input terminal INB of third driver U6; first driver U4 to third driver U6 respond to first type first PWM signal, output first type second drive signal from first output terminal OUTA of first driver U4, second output terminal OUTB of first driver U4, first output terminal OUTA of second driver U5, second output terminal OUTB of second driver U5, first output terminal OUTA of third driver U5, and second output terminal OUTB of third driver U5, to control second DC converter 30 to convert third DC power to second supply DC power; or In response to a second input DC voltage greater than or equal to a preset voltage, microprocessor U1 outputs a second type PWM signal from its sixth general-purpose input / output terminal PA10, seventh general-purpose input / output terminal PA11, eighth general-purpose input / output terminal PA12, ninth general-purpose input / output terminal PA13, tenth general-purpose input / output terminal PA14, and eleventh general-purpose input / output terminal PA1 to the first input terminal INA of the first driver U4, the second input terminal INB of the first driver U4, the first input terminal INA of the second driver U5, and the second input terminal PA1 of the second driver U5. The second input terminal INB, the first input terminal INA of the third driver U6, and the second input terminal INB of the third driver U6; the first driver U4 to the third driver U6 respond to the second type of first PWM signal and output the second type of second drive signal from the first output terminal OUTA of the first driver U4, the second output terminal OUTB of the first driver U4, the first output terminal OUTA of the second driver U5, the second output terminal OUTB of the second driver U5, the first output terminal OUTA of the third driver U5, and the second output terminal OUTB of the third driver U5, so as to control the second DC converter 30 to convert the input second input DC power into the fourth DC power.

[0144] The energy storage DC power includes the battery voltage provided by the energy storage module 80 and the charging DC power connected to the energy storage module 80; the first DC power, the second DC power, the third DC power, the fourth DC power and the energy storage DC power converge at the first node A.

[0145] The present invention also provides an electronic device, which includes the power supply circuit described above.

[0146] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0147] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A power supply circuit, characterized in that, Connected to an energy storage module, it includes a control circuit, a first DC-DC converter, and a second DC-DC converter; the energy storage module, the first DC-DC converter, and the second DC-DC converter are all connected to a first node; The control circuit, connected to the first DC-DC converter and the second DC-DC converter, is configured to: in response to a first type of connection confirmation signal, control the first DC-DC converter to convert a first DC power supply to a first power supply DC power supply; in response to a second type of connection confirmation signal, control the first DC-DC converter to convert the first input DC power supply to a second DC power supply; in response to an input signal satisfying a first preset condition, control the second DC-DC converter to convert a third DC power supply to a second power supply DC power supply; and in response to an input signal satisfying a second preset condition, control the second DC-DC converter to convert the second input DC power supply to a fourth DC power supply. The first type of DC power includes the first DC power and the second DC power, the second type of DC power includes the third DC power and the fourth DC power, and the energy storage DC power includes the battery voltage provided by the energy storage module and the charging DC power connected to the energy storage module; one of the first type of DC power, one of the second type of DC power and one of the energy storage DC power converge at the first node; The input signal includes the second input DC power and / or communication signal.

2. The power supply circuit as described in claim 1, characterized in that, The first preset condition is: the second input DC voltage is less than the preset voltage; and / or The communication signal is a first-type communication signal; The second preset condition is: the second input DC voltage is greater than or equal to the preset voltage; and / or The communication signal is a type II communication signal.

3. The power supply circuit as described in claim 1, characterized in that, The first DC-DC converter has a first input / output terminal and a second input / output terminal; In the first DC converter, the switching transistors connected to the first input / output terminal are multiplexed as the power switching transistors and charging control switching transistors of the first DC converter, and the switching transistors connected to the second input / output terminal are multiplexed as the power switching transistors and discharging control switching transistors of the first DC converter. The first input / output terminal is used to connect to the first input DC power and output the first supply DC power, and the second input / output terminal is used to connect to the first DC power and output the second DC power.

4. The power supply circuit as described in any one of claims 1 to 3, characterized in that, The power supply circuit also includes a switching circuit; The control circuit is also connected to the switching circuit, specifically configured to: output a first type of first driving signal and a switching signal in response to the first type of connection confirmation signal; and disconnect the output of the second driving signal in response to the disconnection of the input signal. The switching circuit is configured to transmit the battery voltage in response to the switching signal; The first DC-DC converter is specifically configured to convert the first DC power into the first power supply DC power in response to the first type of first drive signal; wherein the first DC power is the battery voltage; The second DC-DC converter is specifically configured to stop operating in response to the disconnection of the second drive signal; or The power supply circuit also includes a switching circuit; The control circuit is also connected to the switching circuit, and is specifically configured to: disconnect the output of the first driving signal in response to the disconnection of the connection confirmation signal; and output a first type of second driving signal and a switching signal in response to the input signal that meets the first preset condition. The switching circuit is configured to transmit the battery voltage in response to the switching signal; The first DC-DC converter is specifically configured to stop working in response to the disconnection of the first type of first drive signal; The second DC-DC converter is specifically configured to convert the third DC power into the second power supply DC power in response to the first type of second drive signal; wherein the third DC power is the battery voltage.

5. The power supply circuit as described in any one of claims 1 to 3, characterized in that, The power supply circuit also includes a switching circuit; The control circuit is configured to output a second type of first drive signal and a switch signal in response to the second type of connection confirmation signal; and to disconnect the output of the second drive signal in response to the disconnection of the input signal. The first DC-DC converter is specifically configured to convert the first input DC power into the second DC power in response to the second type of first drive signal; wherein the second DC power is the charging DC power; The switching circuit is configured to transmit the charging DC power to charge the energy storage module in response to the switching signal; The second DC-DC converter is specifically configured to stop operating in response to the disconnection of the second drive signal; or The power supply circuit also includes a switching circuit; The control circuit is also connected to a switching circuit, specifically configured to: disconnect the output of the first drive signal in response to the disconnection of the connection confirmation signal; and output a second type of second drive signal and a switching signal in response to the input signal that meets the second preset condition. The first DC-DC converter is specifically configured to stop working in response to the disconnection of the first drive signal; The second DC-DC converter is specifically configured to convert the second input DC power into the fourth DC power in response to the second type of second drive signal, wherein the fourth DC power is the charging DC power; The switching circuit is configured to transmit the charging DC power to charge the energy storage module in response to the switching signal.

6. The power supply circuit according to any one of claims 1 to 3, characterized in that, The power supply circuit also includes a switching circuit; The control circuit is also connected to the switching circuit, and is specifically configured to: in response to the input signal that meets the first preset condition and the first type of connection confirmation signal, output a first type of first driving signal, a first type of second driving signal and a switching signal; The switching circuit is configured to transmit the battery voltage in response to the switching signal; The first DC-DC converter is specifically configured to convert the first DC power into the first power supply DC power in response to the first type of first drive signal; The second DC-DC converter is specifically configured to convert the third DC power into the second power supply DC power in response to the first type of second drive signal; Wherein, both the first DC current and the third DC current are the battery voltage; or The power supply circuit also includes a switching circuit; The control circuit is configured to output a second type of first drive signal, a second type of second drive signal, and a switch signal in response to the input signal that meets the second preset condition and the second type of connection confirmation signal; The first DC-DC converter is specifically configured to convert the first input DC power into the second DC power in response to the second type of first drive signal; The second DC-DC converter is specifically configured to convert the second input DC power into the fourth DC power in response to the second type of second drive signal, wherein the second DC power and the fourth DC power are combined to form the charging DC power; The switching circuit is configured to transmit the charging DC power to charge the energy storage module in response to the switching signal.

7. The power supply circuit as described in any one of claims 1 to 3, characterized in that, The power supply circuit also includes a switching circuit; The control circuit is configured to disconnect the switch signal in response to a protection command, and to output a first type of first drive signal, a second type of second drive signal, and a switch signal in response to an input signal of a second preset condition and a first type of connection confirmation signal. In response to the disconnection of the switching signal, the switching circuit disconnects the first DC converter, the second DC converter, and the energy storage module. The second DC-DC converter is specifically configured to convert the second input DC power into the fourth DC power in response to the second type of second drive signal; wherein the fourth DC power is the first DC power. The first DC-DC converter is specifically configured to convert the first DC power into the first power supply DC power in response to the first type of first drive signal; or The power supply circuit also includes a switching circuit; The control circuit is configured to disconnect the switch signal in response to a protection command, and to output a second type of first drive signal, a first type of second drive signal, and a switch signal in response to the input signal of the first preset condition and the second type of connection confirmation signal. In response to the disconnection of the switching signal, the switching circuit disconnects the first DC converter, the second DC converter, and the energy storage module. The first DC-DC converter is specifically configured to convert the first input DC power into the second DC power in response to the second type of first drive signal; wherein the second DC power is the third DC power. The second DC-DC converter is specifically configured to convert the third DC power into the second power supply DC power in response to the first type of second drive signal.

8. The power supply circuit as described in any one of claims 1 to 3, characterized in that, Also includes: A detection circuit, connected to the second DC-DC converter, is configured to detect the electrical parameters of the second DC power supply and output a detection signal; The control circuit is also configured to obtain a second required power based on the detection signal.

9. The power supply circuit as described in claim 8, characterized in that, It also includes switching circuits; The control circuit is also connected to the switching circuit, and is specifically configured to: output a switching signal in response to the disconnection of the protection command; and output a second type of first driving signal and a first type of second driving signal in response to the input signal that meets the first preset condition and the second type of connection confirmation signal, and in response to the first output power carried by the second type of connection confirmation signal being greater than the second required power. The first DC-DC converter is specifically configured to convert the first input DC power into the second DC power in response to the second type of first drive signal; wherein the second DC power is split into a third DC power and the charging DC power; The second DC-DC converter is specifically configured to convert the third DC power into the second power supply DC power in response to the first type of second drive signal; The switching circuit is configured to transmit the charging DC power to charge the energy storage module in response to the switching signal; or The power supply circuit also includes a switching circuit; The control circuit is also connected to the switching circuit, and is specifically configured to: output a switching signal in response to the disconnection of the protection command; and output a second type of first driving signal and a first type of second driving signal in response to the input signal that meets the first preset condition and the second type of connection confirmation signal, and in response to the first output power carried by the second type of connection confirmation signal being less than the second required power. The switching circuit is configured to transmit the battery voltage in response to the switching signal; The first DC-DC converter is specifically configured to convert the first input DC power into the second DC power in response to the second type of first drive signal; wherein the second DC power and the battery voltage are combined to form the third DC power; The second DC-DC converter is specifically configured to convert the third DC power into the second power supply DC power in response to the first type of second drive signal; or The power supply circuit also includes a switching circuit; The control circuit is also connected to the switching circuit, and is specifically configured to: output a switching signal in response to the disconnection of the protection command; and output a second type of first driving signal and a first type of second driving signal in response to the input signal that meets the first preset condition and the second type of connection confirmation signal, and in response to the first output power carried by the second type of connection confirmation signal being equal to the second required power. The first DC-DC converter is specifically configured to convert the first input DC power into the second DC power in response to the second type of first drive signal; wherein the second DC power is a third DC power. The second DC-DC converter is specifically configured to convert the third DC power into the second power supply DC power in response to the first type of second drive signal.

10. The power supply circuit according to any one of claims 1 to 3, characterized in that, Also includes: A detection circuit, connected to the second DC-DC converter, is configured to detect the electrical parameters of the second input DC power supply and output a sampling signal. The control circuit is also configured to obtain a second output power based on the sampled signal and / or communication signal.

11. The power supply circuit as described in claim 10, characterized in that, It also includes switching circuits; The control circuit is also connected to the switching circuit, and is specifically configured to: output a switching signal in response to the disconnection of the protection command; and output a first type of first driving signal and a second type of second driving signal in response to the input signal that meets the second preset condition and the first type of connection confirmation signal, and in response to the first type of connection confirmation signal carrying a first demand power greater than the second output power. The switching circuit is configured to transmit the battery voltage in response to the switching signal; The second DC-DC converter is specifically configured to convert the second input DC power into the fourth DC power in response to the second type of second drive signal; wherein the battery voltage and the fourth DC power are combined to form the first DC power; The first DC-DC converter is specifically configured to convert the first DC power into the first power supply DC power in response to the first type of first drive signal; or The power supply circuit also includes a switching circuit; The control circuit is also connected to the switching circuit, and is specifically configured to: output a switching signal in response to the disconnection of the protection command; and output a first type of first driving signal and a second type of second driving signal in response to the input signal that meets the second preset condition and the first type of connection confirmation signal, and in response to the first type of connection confirmation signal carrying a first demand power that is less than the second output power. The second DC-DC converter is specifically configured to convert the second input DC power into the fourth DC power in response to the second type of second drive signal; wherein the fourth DC power is split into the first DC power and the charging DC power; The first DC-DC converter is specifically configured to convert the first DC power into the first power supply DC power in response to the first type of first drive signal; The switching circuit is configured to transmit the charging DC power to charge the energy storage module in response to the switching signal; or The power supply circuit also includes a switching circuit; The control circuit is also connected to the switching circuit, and is specifically configured to: output a switching signal in response to the disconnection of the protection command; and output a first type of first driving signal and a second type of second driving signal in response to the input signal that meets the second preset condition and the first type of connection confirmation signal, and in response to the first demand power carried by the first type of connection confirmation signal being equal to the second output power. The second DC-DC converter is specifically configured to convert the second input DC power into the fourth DC power in response to the second type of second drive signal; wherein the fourth DC power is the first DC power. The first DC-DC converter is specifically configured to convert the first DC power supply into the first power supply DC power in response to the first type of first drive signal.

12. An electronic device, characterized in that, The electronic device includes a power supply circuit as described in any one of claims 1 to 11.

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