Power supply circuits and equipment

Abstract

This application relates to the field of battery charging technology and discloses a power supply circuit and device. The power supply circuit includes: a charging interface for connecting an external charging adapter; a device interface connecting the charging interface and the device; a monitoring module connected to the charging interface, which generates a cutoff signal or a control signal when the monitoring module detects the external charging adapter is connected and the control module detects the device is in operation; and a DC-DC converter connected to the charging interface, the battery module, and the control module, which controls the external charging adapter to supply power to the device upon receiving the cutoff signal; and controls the external charging adapter to provide a first power supply signal to the device and a second power supply signal (smaller than the first power supply signal) to the battery module upon receiving the control signal. When the device is in operation, the external charging adapter prioritizes meeting the device's power supply needs, improving the user experience.

Description

Technical Field

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

[0002] With the continuous advancement of technology, electronic devices are becoming increasingly intelligent. When charging these devices, their charging ports must be connected to an external power source. This power input must be relayed through the battery cell before it can provide effective power to the device. In this power supply mode, the electronic device does not immediately receive power after connection; the system must wait for the battery to charge to a preset threshold before it can utilize that power to activate its functions. This power transmission mechanism, to some extent, affects user convenience and the user experience, and therefore has room for improvement. Utility Model Content

[0003] In view of this, the present application provides a power supply circuit and device, which can effectively solve the problem that electronic devices cannot immediately obtain direct power supply after being connected to a power source in the prior art.

[0004] In a first aspect, embodiments of this application provide a power supply circuit for supplying power to a battery module and an electrical device, including: The charging port is configured for connecting an external charging adapter; The electrical equipment interface connects the charging interface and the electrical equipment. The monitoring module is connected to the charging interface; The control module is connected to both the electrical equipment interface and the monitoring module. When the monitoring module detects that the external charging adapter is connected and the control module detects that the electrical equipment is in operation, the control module generates a cutoff signal or a control signal. A DC-DC converter is connected to the charging interface, the battery module, and the control module respectively. The DC-DC converter responds to the received cutoff signal to control the external charging adapter to enter the first charging mode indicated by the cutoff signal. In the first charging mode, the external charging adapter supplies power to the electrical device. Alternatively, the DC-DC converter responds to the received control signal to control the external charging adapter to enter a second charging mode indicated by the control signal. In the second charging mode, the external charging adapter provides a first power supply signal to the electrical device and a second power supply signal to the battery module, wherein the first power supply signal is greater than the second power supply signal.

[0005] In some embodiments, the control module is a fast charging protocol module; The fast charging protocol module is configured to communicate with the charging interface. The fast charging protocol module is used to perform a fast charging protocol handshake with the external charging adapter to obtain the electrical signal parameters of the external charging adapter, and in response to the obtained electrical signal parameters, generate a control signal for controlling the external charging adapter to enter the second charging mode.

[0006] In some embodiments, it also includes: The switching module is connected to the charging interface, the power device interface, and the fast charging protocol module respectively. It is used to respond to the switching command issued by the control module when the power device is in operation, and to perform a switching operation to enable the external charging adapter to communicate with the power device to perform a fast charging protocol handshake.

[0007] In some embodiments, it also includes: A current sampling module is connected to the charging interface, the DC-DC converter, and the control module, respectively, and is used to sample the output current of the charging interface and convert the sampling result into a current detection signal and output it to the control module. A charging management module is connected to the DC-DC converter and the battery module respectively, and is used to acquire the charging current parameters of the battery module and output them to the control module; The control module is also configured to generate a control signal for controlling the external charging adapter to enter the second charging mode in response to receiving the current detection signal and the charging current parameter.

[0008] In some embodiments, the charging management module includes: A charging control switch, the input terminal of which is connected to the output terminal of the DC converter, and the output terminal of which is connected to the positive terminal of the battery module; A charging current acquisition unit, one end of which is connected to the negative terminal of the charging interface, and the other end of which is connected to the negative terminal of the battery module; The charging management chip is electrically connected to the charging control switch, the charging current acquisition unit, and the battery module, respectively. The charging management chip is used to acquire the charging current parameters through the charging current acquisition unit. The charging management chip is also configured to communicate with the control module.

[0009] In some embodiments, the charging management module further includes: The charging current acquisition unit includes a sampling resistor, one end of which is connected to the negative terminal of the charging interface, and the other end of which is connected to the negative terminal of the battery module.

[0010] In some embodiments, it also includes: A voltage regulator module is configured to connect to the charging interface and the battery module respectively. The voltage regulator module is used to convert the electrical signal of the external charging adapter or the electrical signal of the battery module to provide a power supply signal for the power supply circuit.

[0011] In some embodiments, it also includes: A switch module is provided, with its input terminal connected to the charging interface and its output terminal connected to the device interface and the DC-DC converter, respectively. The switch module is used to perform on or off operations in response to the instructions of the control module, so as to control the power supply of the external charging adapter to the device and the battery module.

[0012] In some embodiments, the monitoring module includes a voltage divider unit, a pull-up unit, and a switching transistor; The voltage divider unit is connected in series between the positive and negative terminals of the charging interface, and the voltage divider node of the voltage divider unit is connected to the control terminal of the switching transistor. One end of the pull-up unit is connected to the first power supply, and the other end of the pull-up unit is connected to the input terminal of the switching transistor and the control module; The output terminal of the switching transistor is connected to the negative terminal of the charging interface; When the external charging adapter is connected to the charging interface, the electrical signal of the external charging adapter changes the state of the switching transistor through the voltage divider unit, thereby changing the level signal of the connection pin between the control module and the switching transistor, so that the control module can detect that the external charging adapter is connected.

[0013] Secondly, embodiments of this application provide a power supply device, the power supply device comprising: A battery module, and at least one power supply circuit as described in the first aspect above; The battery module is electrically connected to the power supply circuit, and both the power supply circuit and the battery module are connected to the interface of the electrical device and supply power to the electrical device.

[0014] The embodiments of this application have the following beneficial effects: The power supply circuit of this application is used to supply power to a battery module and a power-consuming device, including: a charging interface configured to connect an external charging adapter; a power-consuming device interface connecting the charging interface and the power-consuming device; a monitoring module connected to the charging interface; a control module connected to both the power-consuming device interface and the monitoring module, wherein when the monitoring module detects that the external charging adapter is connected and the control module detects that the power-consuming device is in operation, the control module generates a cutoff signal or a control signal; and a DC-DC converter connected to the charging interface, the battery module, and the control module, wherein the DC-DC converter, in response to the received cutoff signal, controls the external charging adapter to enter a first charging mode indicated by the cutoff signal, in which the external charging adapter supplies power to the power-consuming device; or, in response to the received control signal, the DC-DC converter controls the external charging adapter to enter a second charging mode indicated by the control signal, in which the external charging adapter provides a first power supply signal to the power-consuming device and a second power supply signal to the battery module, wherein the first power supply signal is greater than the second power supply signal. When an external charging adapter is connected and the device is running, the control module generates a cutoff signal or a control signal, causing the external charging adapter to supply power only to the device, or to provide a smaller power signal to the battery module and a larger power signal to the device, ensuring the normal operation of the device. This ensures the power supply needs of the device while guaranteeing the stable operation of both the device and the battery module, improving user experience and system reliability. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A first structural schematic diagram of the power supply circuit according to an embodiment of this application is shown; Figure 2 A circuit diagram of the monitoring module according to an embodiment of this application is shown; Figure 3 A second structural schematic diagram of the power supply circuit according to an embodiment of this application is shown; Figure 4 A circuit diagram of the charging management module according to an embodiment of this application is shown; Figure 5 A circuit diagram of the power supply circuit according to an embodiment of this application is shown.

[0017] Explanation of key component symbols: 11: Electrical equipment interface; 111: Electrical equipment; 12: Charging interface; 121: External charging adapter; 13: Monitoring module; 131: Voltage divider unit; 132: Pull-up unit; 14: Control module; 15: DC-DC converter; 151: Battery module; 16: Switching switch module; 17: Current sampling module; 18: Voltage regulator module; 19: Charging management module. Detailed Implementation

[0018] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0019] The components of the embodiments of this application described and illustrated in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0020] In the following text, the terms "comprising," "having," and their cognates, which may be used in various embodiments of this application, are intended only to indicate a particular feature, number, step, operation, element, component, or combination thereof, and should not be construed as primarily excluding the presence of one or more other features, numbers, steps, operations, elements, components, or combinations thereof, or adding the possibility of one or more combinations thereof. Furthermore, the terms "first," "second," "third," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0021] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments of this application pertain. Terms (such as those defined in commonly used dictionaries) shall be interpreted as having the same meaning as in their contextual meaning in the relevant technical field and shall not be construed as having an idealized or overly formal meaning, unless clearly defined in the various embodiments of this application.

[0022] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0023] Considering that in existing technologies, electronic devices cannot immediately receive direct power after being connected to a power source, the system must wait for the battery level to reach a certain preset threshold before it can utilize the battery power to start the device's operating functions. This application provides a power supply circuit and device. When an external charging adapter is connected and the device is running, the control module generates a cutoff signal or a control signal, causing the external charging adapter to supply power only to the device, or to provide a smaller power supply signal to the battery module and a larger power supply signal to the device, ensuring the normal operation of the device. Users can use the device normally while charging it, improving the user experience.

[0024] The power supply circuit of the embodiments of this application will be described below with reference to some specific examples.

[0025] Figure 1 A schematic diagram of a power supply circuit according to an embodiment of this application is shown.

[0026] It is understood that the power supply circuit of this application supplies power to the electrical device 111 and the battery module 151. The battery module 151 powers the electrical device 111 and can be expanded and customized according to application requirements. By increasing or decreasing the number of individual battery cells, parameters such as the module's capacity and voltage can be adjusted to meet the needs of different application scenarios. The electrical device 111 in this application can be any type of electrical device capable of being powered by the battery module 151, such as an electric curtain, and is not limited thereto.

[0027] Exemplarily, the power supply circuit includes: a device interface 11, a charging interface 12, a monitoring module 13, a control module 14, and a DC-DC converter 15. The power supply terminal of the device interface 11 is connected to the power supply terminal of the charging interface 12, and the device interface 11 is connected to the device 111 to provide power to the device after the external charging adapter 121 is connected. The charging interface 12 is used to connect to the external charging adapter 121. The power supply terminal of the charging interface 12 is connected to the input terminal of the monitoring module 13. The output terminal of the monitoring module 13 is electrically connected to the control module 14. The output terminal of the charging interface 12 is also connected to the output terminal of the DC-DC converter 15. The output terminal of the DC-DC converter 15 is used to connect to the battery module 151, and the control terminal of the DC-DC converter 15 is electrically connected to the control module 14.

[0028] In this embodiment, the monitoring module 13 is used to detect whether the external charging adapter 121 is connected. After the monitoring module detects that the external charging adapter 121 is connected, the control module 14 determines whether the electrical device 111 is in operation. If it is in operation, it generates a cutoff signal or a control signal. The DC-DC converter 15 processes the electrical signal input to the battery module 151 based on the cutoff signal or the control signal, thereby giving priority to powering the electrical device 111.

[0029] Understandably, in response to the received cutoff signal, the DC-DC converter 15 completely cuts off the electrical signal flowing to the battery module 151, thereby controlling the external charging adapter 121 to enter the first charging mode indicated by the cutoff signal. In the first charging mode, all electrical signals of the external charging adapter 121 flow to the electrical device 111.

[0030] In response to the received control signal, the DC-DC converter 15 reduces the electrical signal flowing to the battery module 151, thereby controlling the external charging adapter 121 to enter the second charging mode indicated by the control signal. In the second charging mode, the external charging adapter 121 provides a first power supply signal to the device 111 and a second power supply signal to the battery module 151, wherein the first power supply signal is greater than the second power supply signal.

[0031] The control signal generated by the control module 14 can be set according to the actual application. The control module 14 can generate a step-down signal to reduce the voltage input to the battery module 151 by the DC converter 15; it can also generate a current limiting signal to reduce the current input to the battery module 151 by the DC converter 15, so that more electrical signals from the external charging adapter 121 flow to the power device 111 to power the power device 111. When the external charging adapter 121 is connected, if the device 111 is in operation, the control module 14 generates a cutoff signal or control signal to control the DC-DC converter 15 to reduce or cut off the current or voltage flowing to the battery module 151, so that the electrical signal from the external charging adapter 121 flows preferentially to the device 111. This ensures that the device 111 receives priority power, guarantees stable operation of the device 111, and avoids power outages or performance degradation of the device 111 due to the charging and discharging of the battery module 151. It achieves plug-and-play functionality; users do not need to worry about whether the battery module 151 has sufficient power, as the system automatically optimizes power distribution, improving system stability and user experience. Furthermore, the DC-DC converter 15 can cut off the electrical signal flowing to the battery module 151 when necessary, preventing overcharging or over-discharging and improving system safety.

[0032] In this embodiment, it should be noted that the power device interface 11 can be configured according to the actual application. Specifically, the power device interface 11 can be provided with a power terminal connected to the charging interface 12; it can also be provided with a signal terminal connected to the control module 14; furthermore, it can also be provided with a communication terminal connected to the external charging adapter 121, etc. The charging interface 12 in this embodiment can be any type of interface, such as Type-A, Type-C, Micro USB, Lightning. Exemplarily, the charging interface 12 is a Type-C interface. The Type-C interface supports reversible insertion, so users do not need to worry about the direction of the plug, which greatly improves the convenience of use. Moreover, the Type-C interface supports multiple standards and can achieve high power output.

[0033] The following will describe each module in detail to help you understand the power supply circuit of the embodiments of this application.

[0034] In this embodiment, the external charging adapter 121 converts alternating current (AC) from the power outlet into direct current (DC) required by the battery module 151. Furthermore, the external charging adapter 121 can adjust its output voltage to meet the voltage requirements of the battery module 151. It manages parameters such as output voltage, current, and power, and provides protection functions such as overcurrent protection, overtemperature protection, and short-circuit protection. In this embodiment, the battery module 151 and the device 111 require different voltage levels. The external charging adapter 121 can provide appropriate voltage outputs respectively, thereby charging the battery module 151 and supplying power to the device 111. The external charging adapter 121 can also control the output current to meet the current requirements of the battery module 151 and the device 111. In some other embodiments of this application, the external charging adapter 121 also has a charging protection function, which can monitor and control parameters such as voltage, current, and temperature during the charging process to ensure safe charging and prevent overcharging or overheating of the battery.

[0035] In one embodiment, based on the above embodiments, such as Figure 2As shown, the monitoring module 13 includes a voltage divider unit 131, a pull-up unit 132, and a switching transistor Q4. The voltage divider unit 131 is connected in series between the positive and negative terminals of the charging interface 12. The voltage divider node of the voltage divider unit 131 is connected to the control terminal of the switching transistor. One end of the pull-up unit 132 is connected to the first power supply, and the other end of the pull-up unit 132 is connected to the input terminal of the switching transistor and the control module 14. The output terminal of the switching transistor is connected to the negative terminal of the charging interface 12. Specifically, the voltage divider unit 131 includes a first voltage divider resistor R3 and a second voltage divider resistor R4, and the pull-up unit 132 includes a pull-up resistor R5. The first power supply is represented by VDD. One end of the first voltage divider resistor R3 is connected to the positive terminal of the power supply of the charging interface 12, and the other end of the first voltage divider resistor R3 is connected to one end of the second voltage divider resistor R4. The other end of the second voltage divider resistor R4 is grounded, and the other end of the first voltage divider resistor R3 is also connected to the control terminal of the switching transistor Q4. The input terminal of the switching transistor Q4 is connected to one end of the pull-up resistor R5 and the control module 14, respectively. The other end of the pull-up resistor R5 is connected to VDD, and the output terminal of the switching transistor Q4 is grounded.

[0036] If the external charging adapter 121 is not connected to the charging interface 12, the switch Q4 is in the off state, and the pin connected to the control module 14 and the switch Q4 is a high-level signal. When the external charging adapter 121 is connected to the charging interface 12, the electrical signal of the external charging adapter 121 flows through the charging interface 12 to the voltage divider unit 131. The first voltage divider resistor R3 and the second voltage divider resistor R4 divide the signal and then flow to the control terminal of the switch Q4. The voltage divider unit 131 changes the state of the switch Q4, turning it on and pulling down the voltage at the input terminal of the switch Q4. This changes the level signal of the pin connected to the control module 14 and the switch Q4, causing the pin connected to the control module 14 to become a low-level signal. The control module 14 then uses the level of this pin to determine if the external charging adapter 121 is connected. In this embodiment, the monitoring module 13, through the combination of the voltage divider unit 131, the pull-up unit 132, and the switch Q4, achieves intelligent detection of the connection status of the external charging adapter 121, improving the detection accuracy and reliability of the system.

[0037] Furthermore, the DC-DC converter 15 of this application can support a wide range of inputs. Its control terminal is connected to the control module 14, and it can control the voltage input to the external charging adapter 121 through the charging interface 12 according to the control signal of the control module 14, so as to achieve precise voltage regulation and current limitation. When the electrical equipment 111 is in operation, the charging process is optimized to ensure that the electrical equipment 111 is given priority in power supply, thereby improving the flexibility of the system.

[0038] The control module 14 in this embodiment can be any type of controller, such as an MCU, CPU, or FPGA. Further, the control module 14 is a fast charging protocol module, specifically connected to the communication terminal of the charging interface 12. The fast charging protocol module is used to perform a fast charging protocol handshake with the external charging adapter 121 through the charging interface 12. The handshake process is a communication method between the fast charging protocol module and the external charging adapter 121, based on the fast charging protocol, to negotiate and determine the voltage and current that the charging adapter should output. Specifically, the fast charging protocol can be QC, PD, UFCS, SCP, etc., and is not limited here. Based on the handshake result, the fast charging protocol module can obtain the electrical signal parameters of the external charging adapter 121, determine the voltage input to the external charging adapter 121 through the charging interface 12, and output corresponding control signals to the DC-DC converter 15 based on the voltage signal of the external charging adapter 121. This causes the DC-DC converter 15 to adjust the voltage and current input to the battery module 151 to meet the charging requirements.

[0039] Through handshake communication between the fast charging protocol module and the external charging adapter 121, the fast charging protocol module can dynamically adjust the charging parameters of the battery module 151 according to the electrical signal parameters. This allows more electrical signals from the external charging adapter 121 to flow to the device 111, supplying power to the device 111 and ensuring optimal power supply under different conditions. This not only shortens charging time but also protects the battery assembly from damage caused by overvoltage or overcurrent. Furthermore, this intelligent charging management improves system compatibility, enabling the device to adapt to various types of external charging adapters 121, thus providing users with a more convenient and efficient charging experience. Simultaneously, this design enhances system reliability and safety, ensuring stability during the charging process and safe operation of the device.

[0040] As an alternative solution, Figure 3 The diagram shown is another structural schematic of the power supply circuit.

[0041] In one embodiment, based on the above embodiments, the device 111 can perform a fast charging protocol handshake with the external charging adapter 121, thereby accelerating the charging speed of the device 111. Specifically, as shown below... Figure 3 As shown, the power supply circuit also includes a switching module 16, which is connected to the charging interface 12, the device interface 11, and the fast charging protocol module. It is used to respond to the switching command issued by the control module 14 when the device 111 is in operation, perform the switching operation, and enable the external charging adapter 121 to communicate with the device 111 and perform a fast charging protocol handshake.

[0042] Specifically, the control terminal of the switching module 16 is connected to the fast charging protocol module, the common terminal of the switching module 16 is connected to the communication terminal of the charging interface 12, the normally closed terminal of the switching module 16 is connected to the communication terminal of the fast charging protocol module, and the normally open terminal of the switching module 16 is connected to the communication terminal of the device interface 11. When the external charging adapter 121 is connected to the charging interface 12, if the fast charging protocol module detects that the device 111 is in a non-operating state, it will not output a signal to the switching module 16. The control terminal of the switching module 16 will default to a low-level signal. The communication terminal of the fast charging protocol module is connected to the communication terminal of the charging interface 12, and the fast charging protocol module and the external charging adapter 121 will achieve handshake communication.

[0043] When an external device charging adapter is connected to the charging interface 12, if the fast charging protocol module detects that the device 111 is in operation, it outputs a high-level signal to the control terminal of the switching module 16, and the communication terminal of the device 111 and the communication terminal of the charging interface 12 are connected, and handshake communication is realized between the device 111 and the external charging adapter 121.

[0044] Through the intelligent switching of the switching module 16, the system can automatically select the appropriate handshake communication method according to the operating status of the electrical equipment 111. This improves the system's compatibility and flexibility, enabling the equipment to adapt to various types of charging adapters, improving charging efficiency, and providing users with a more convenient and efficient charging experience.

[0045] In one embodiment, based on the above embodiments, such as Figure 3 As shown, the power supply circuit also includes a current sampling module 17. Specifically, the current sampling module 17 can be a sampling resistor, which is placed between the charging interface 12 and the DC-DC converter 15. Furthermore, an operational amplifier can be connected between the sampling resistor and the control module 14 to enhance the accuracy and stability of the signal. The current sampling module 17 is used to sample the output current of the charging interface 12 and convert the sampling result into a current detection signal, which is then output to the control module 14.

[0046] The control module 14 monitors the current output from the external charging adapter 121 in real time through the current sampling module 17, and generates a control signal based on the current detection signal to precisely control the DC-DC converter 15. This enables dynamic adjustment of the charging process of the battery module 151, allowing more electrical signals from the external charging adapter 121 to flow to the device 111, prioritizing power supply to the device 111 and improving system stability and user experience. Furthermore, the control module 14 can adjust the operating state of the DC-DC converter 15 in a timely manner based on the current detection signal, ensuring that the charging current remains within a safe range while improving charging efficiency. This significantly enhances the controllability and safety of the charging process.

[0047] In this embodiment, it should be noted that a charging management module can be configured in the battery module 151 to monitor and manage each individual battery cell. Alternatively, a dedicated charging management module can be set in the power supply circuit of the battery module 151 to monitor and manage the batteries. Figure 3 As shown, in one embodiment, a charging management module 19 is provided in the power supply circuit. The charging management module 19 is connected to the DC-DC converter 15 and the battery module 151 respectively. The charging management module 19 is used to monitor the parameters of the battery module 151 and control the charging of the battery module 151 according to the parameters. Specifically, the charging management module 19 can monitor the voltage, temperature and current of the battery cells in real time, and perform control operations such as battery equalization, overcharge protection, over-discharge protection, overcurrent protection, short circuit protection and over-temperature protection to ensure the safety and performance of each battery cell.

[0048] In one implementation, such as Figure 4 As shown, the charging management module 19 includes a charging control switch, a charging current acquisition unit, and a charging management chip U2. Specifically, the charging control switch includes a first switch Q1 and a second switch Q2 connected in series. The current acquisition unit is a sampling resistor R2. The two pins of the charging management chip U2 are connected in parallel across the sampling resistor R2. The input terminal of the first switch Q1 is connected to the output terminal of the DC-DC converter 15, and the output terminal of the second switch Q2 is connected to the positive terminal of the battery module 151. The control terminals of the first switch Q1 and the second switch Q2 are connected to the charging management chip U2. One end of the sampling resistor R2 is connected to the negative terminal of the charging interface 12, and the other end of the sampling resistor R2 is connected to the negative terminal of the battery module 151. The charging management chip U2 is also electrically connected to the positive terminal of the battery module 151.

[0049] The charging management chip U2 is used to obtain the charging voltage parameters of the battery module 151 through a pin connected to the positive terminal of the battery module 151, and to obtain the charging current parameters of the battery module 151 during charging through a sampling resistor R2. Based on the charging voltage and charging current parameters, the charging management chip U2 can precisely control the first switch Q1 and the second switch Q2 of the charging control switch, realizing intelligent management of the charging process of the battery module 151. Furthermore, the charging management chip U2 integrates a fuel gauge, which can obtain the battery level of the battery module 151 in real time, thereby enabling more precise control of the charging control switch based on voltage, current, and battery level.

[0050] Furthermore, the charging management chip U2 is also connected to the control module 14 to output the charging current parameters of the battery module 151 to the control module 14. The control module 14 generates a control signal to the DC-DC converter based on the current detection signal of the current sampling module 17 and the charging current parameters, so that more electrical signals from the external charging adapter 121 flow to the electrical device 111, thereby improving the control accuracy.

[0051] Furthermore, the charging management chip U2 can transmit charging current parameters, charging voltage parameters, and power levels to the control module 14 to achieve data interaction, enabling the control module 14 to process and display the data.

[0052] By using the charging management chip U2 to monitor and control the voltage, current, and charge level of the battery module 151 in real time, the safety and efficiency of the charging process can be ensured. The charging management chip U2 can dynamically adjust charging parameters according to the battery status, avoiding overcharging or undercharging, thereby extending battery life and improving charging efficiency. The fuel gauge provides more accurate battery status information, enabling the system to control the charging process more precisely. Furthermore, the data interaction between the charging management chip U2 and the control module 14 allows the entire system to work together better, providing more comprehensive data support and user feedback, enhancing the overall system performance and user experience.

[0053] In one embodiment, based on the above embodiments, such as Figure 3 As shown, the power supply circuit also includes a voltage regulator module 18. The voltage regulator module 18 can be a voltage regulator, and its input terminal is used to connect the charging interface 12 and the battery module 151. It converts the electrical signal from the external charging adapter 121 or the electrical signal from the battery module 151 to provide a power supply signal to the power supply circuit, such as providing a power signal to the control module 14, the switch, etc. By regulating and stabilizing the input voltage through the voltage regulator module 18, it can be ensured that the various components in the power supply circuit (such as the control module 14, the switch, etc.) always operate within a suitable voltage range, thereby avoiding instability or damage caused by voltage fluctuations and further enhancing the stability and reliability of the system.

[0054] In one embodiment, based on the above embodiment, the power supply circuit further includes a switching module. Specifically, the input terminal of the switching module is connected to the charging interface 12, and the output terminal of the switching module is connected to the device interface 11 and the DC-DC converter 15, respectively. The switching module is used to perform on or off operations in response to the instructions of the control module 14, so as to control the power supply of the external charging adapter 121 to the device 111 and the battery module 151. It is understood that the switching module can be a switching transistor, a relay, or an optocoupler, etc. Exemplarily, the switching module is a switching transistor.

[0055] The control module 14 can control the switch module according to the signal from the current sampling module 17, and the control module 14 can also control the switch module according to the data signal transmitted by the charging management module 19; the control module 14 can also control the switch module according to the signal from the current sampling module 17 and the data signal transmitted by the charging management module 19.

[0056] By introducing a switching module, the control module 14 can dynamically adjust the power supply on / off state based on real-time monitored current and charging management data, ensuring optimal power management under different operating conditions. This significantly improves the flexibility and safety of the power supply circuit.

[0057] The following describes the power supply process for the battery module and the electrical device 111 in conjunction with the power supply circuit. Figure 5 As shown, the charging interface 12 is a Type-C interface, the switching module is a switching transistor Q3, wherein the input and output terminals of the switching transistor Q3 are located between the charging interface 12 and the current sampling module 17, the current sampling module 17 includes a resistor R1 located between the switching module and the DC-DC converter 15, and an operational amplifier U3 electrically connected to the resistor R1, the power device interface 11 is located at the output terminal of the current sampling module 17, the DC-DC converter 15 is a DC-DC converter U1, the voltage regulator module 18 includes a voltage regulator U5 and a first diode D1 and a second diode D2, wherein the positive terminal of the first diode D1 is used to connect to the battery module 151, the negative terminal of the first diode D1 is connected to the input terminal of the voltage regulator U5, the positive terminal of the second diode D2 is used to connect to the power supply terminal of the charging interface 12, and the negative terminal of the second diode D2 is connected to the input terminal of the voltage regulator U5.

[0058] When the fast charging protocol module U4 determines through the monitoring module 13 that the external charging adapter 121 is connected to the charging interface 12, the fast charging protocol module U4 detects whether the device 111 is in operation through the ID signal and outputs a high-level signal to the switching transistor Q3, turning on the switching transistor Q3. If the fast charging protocol module U4 determines that the device 111 is in operation, it outputs a high-level signal to the switching module 16, and the B_CC1 and B_CC2 of the device interface 11 communicate with the CC1 and CC2 of the charging interface 12 through the switching module 16, realizing the fast charging protocol handshake communication. The fast charging protocol module U4 then uses the current detection signal... The fast charging protocol module U4 outputs a control signal to the DC-DC converter U1 based on one or more of the following parameters: the battery module 151's current and voltage, the charging current parameter, and the electrical signal parameters of the external charging adapter 121. The DC-DC converter U1 then reduces the current or voltage input to the battery module 151 according to the control signal. The charging management module 19 intelligently manages the charging process of the battery module 151, ensuring that more electrical signals from the external charging adapter 121 flow to the device 111. The fast charging protocol module U4 can also adjust the control signal in real time based on one or more of the following parameters: the current detection signal, the charging current parameter, and the electrical signal parameters of the external charging adapter 121, improving control accuracy. Alternatively, the fast charging protocol module U4 outputs a cutoff signal to the DC-DC converter U1. The DC-DC converter U1 then completely cuts off the electrical signals flowing to the battery module 151 according to the cutoff signal, ensuring that all electrical signals from the external charging adapter 121 flow to the device 111.

[0059] When the fast charging protocol module U4 determines that the device 111 is in a non-operating state, A_CC1 and A_CC2 of the fast charging protocol module U4 communicate with CC1 and CC2 of the charging interface 12 through the switching module 16 to realize fast charging protocol handshake communication. According to the handshake result, the fast charging protocol module U4 can determine the input voltage of the external charging adapter 121, and control the DC converter U1 according to the voltage of the external charging adapter 121. The charging management module 19 is used to intelligently manage the charging process of the battery module 151, thereby charging the battery module 151.

[0060] This application also provides a power supply device, exemplary of which includes a battery module 151 and a power supply circuit as provided in any of the above, wherein the battery module 151 is electrically connected to the power supply circuit, and both the power supply circuit and the battery module 151 are connected to the device interface 11 and supply power to the device 111.

[0061] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can also be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings show the architecture, functionality, and operation of possible implementations of apparatus, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that, in alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, and combinations of blocks in the block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0062] In addition, the functional modules or units in the various embodiments of this application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0063] If the aforementioned functions are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a smartphone, personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application.

[0064] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A power supply circuit for supplying power to a battery module and a power consuming device, characterized by, include: The charging port is configured for connecting an external charging adapter; The electrical equipment interface connects the charging interface and the electrical equipment. The monitoring module is connected to the charging interface; The control module is connected to both the electrical equipment interface and the monitoring module. When the monitoring module detects that the external charging adapter is connected and the control module detects that the electrical equipment is in operation, the control module generates a cutoff signal or a control signal. A DC-DC converter is connected to the charging interface, the battery module, and the control module respectively. The DC-DC converter responds to the received cutoff signal to control the external charging adapter to enter the first charging mode indicated by the cutoff signal. In the first charging mode, the external charging adapter supplies power to the electrical device. Alternatively, the DC-DC converter responds to the received control signal to control the external charging adapter to enter a second charging mode indicated by the control signal. In the second charging mode, the external charging adapter provides a first power supply signal to the electrical device and a second power supply signal to the battery module, wherein the first power supply signal is greater than the second power supply signal.

2. The power supply circuit according to claim 1, characterized in that, The control module is a fast charging protocol module; The fast charging protocol module is configured to communicate with the charging interface. The fast charging protocol module is used to perform a fast charging protocol handshake with the external charging adapter to obtain the electrical signal parameters of the external charging adapter, and in response to the obtained electrical signal parameters, generate a control signal for controlling the external charging adapter to enter the second charging mode.

3. The power supply circuit of claim 2, wherein, Also includes: The switching module is connected to the charging interface, the power device interface, and the fast charging protocol module respectively. It is used to respond to the switching command issued by the control module when the power device is in operation, and to perform a switching operation to enable the external charging adapter to communicate with the power device to perform a fast charging protocol handshake.

4. The power supply circuit of claim 1, wherein, Also includes: A current sampling module is connected to the charging interface, the DC-DC converter, and the control module, respectively, and is used to sample the output current of the charging interface and convert the sampling result into a current detection signal and output it to the control module. A charging management module is connected to the DC-DC converter and the battery module respectively, and is used to acquire the charging current parameters of the battery module and output them to the control module; The control module is also configured to generate a control signal for controlling the external charging adapter to enter the second charging mode in response to receiving the current detection signal and the charging current parameter.

5. The power supply circuit of claim 4, wherein, The charging management module includes: A charging control switch, the input terminal of which is connected to the output terminal of the DC converter, and the output terminal of which is connected to the positive terminal of the battery module; A charging current acquisition unit, one end of which is connected to the negative terminal of the charging interface, and the other end of which is connected to the negative terminal of the battery module; The charging management chip is electrically connected to the charging control switch, the charging current acquisition unit, and the battery module, respectively. The charging management chip is used to acquire the charging current parameters through the charging current acquisition unit. The charging management chip is also configured to communicate with the control module.

6. The power supply circuit according to claim 5, characterized in that, The charging current acquisition unit includes a sampling resistor, one end of which is connected to the negative terminal of the charging interface, and the other end of which is connected to the negative terminal of the battery module.

7. The power supply circuit of claim 1, wherein, Also includes: A voltage regulator module is configured to connect to the charging interface and the battery module respectively. The voltage regulator module is used to convert the electrical signal of the external charging adapter or the electrical signal of the battery module to provide a power supply signal for the power supply circuit.

8. The power supply circuit of claim 1, wherein, Also includes: A switch module is provided, with its input terminal connected to the charging interface and its output terminal connected to the device interface and the DC-DC converter, respectively. The switch module is used to perform on or off operations in response to the instructions of the control module, so as to control the power supply of the external charging adapter to the device and the battery module.

9. The power supply circuit of claim 1, wherein, The monitoring module includes a voltage divider unit, a pull-up unit, and a switching transistor; The voltage divider unit is connected in series between the positive and negative terminals of the charging interface, and the voltage divider node of the voltage divider unit is connected to the control terminal of the switching transistor. One end of the pull-up unit is connected to the first power supply, and the other end of the pull-up unit is connected to the input terminal of the switching transistor and the control module; The output terminal of the switching transistor is connected to the negative terminal of the charging interface; When the external charging adapter is connected to the charging interface, the electrical signal of the external charging adapter changes the state of the switching transistor through the voltage divider unit, thereby changing the level signal of the connection pin between the control module and the switching transistor, so that the control module can detect that the external charging adapter is connected.

10. A power supply device, characterized by comprising: The power supply equipment includes: A battery module, and a power supply circuit as described in any one of claims 1 to 9; The battery module is electrically connected to the power supply circuit, and both the power supply circuit and the battery module are connected to the interface of the electrical device and supply power to the electrical device.

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