Power supply control circuit and emergency start power supply

Abstract

The application discloses a power supply control circuit and an emergency starting power supply. The power supply control circuit comprises a switch module, a driving supply module and a driving voltage stabilizing module. The switch module is used for connecting an energy storage module and an external load, and the switch state of the switch module controls the on-off relationship between the energy storage module and the external load. The driving supply module is connected with the switch module and is used for sending a driving signal to the switch module to control the switch state of the switch module. The driving voltage stabilizing module is connected with the driving supply module and the switch module, is used for storing the driving signal sent by the driving supply module, and when the driving supply module stops sending the driving signal, the driving voltage stabilizing module sends the stored driving signal to the switch module to control the switch state of the switch module. In this way, in an abnormal situation, the switch state of the switch module can be controlled by the driving voltage stabilizing module, thereby effectively controlling the on-off relationship between the energy storage module and the external load, and ensuring the normal starting of the automobile.

Description

Technical Field

[0001] This application relates to the field of power supply control technology, and in particular to a power supply control circuit and an emergency start-up power supply. Background Technology

[0002] In automotive jump starter systems, the design of the power supply control circuit is crucial for ensuring system stability and reliability. The power supply control circuit controls the on / off relationship between the energy storage module and the external load through a switching module. However, in abnormal situations, such as low-temperature starting environments, the switching module is at risk of failure, unable to effectively control the on / off relationship between the energy storage module and the external load, thus affecting the normal starting of the vehicle. Summary of the Invention

[0003] This application provides a power supply control circuit and an emergency start-up power supply to solve at least one of the aforementioned technical problems.

[0004] The power supply control circuit of this application includes:

[0005] A switching module is used to connect the energy storage module and an external load. The switching state of the switching module controls the on / off relationship between the energy storage module and the external load.

[0006] A drive supply module, connected to the switch module, is used to send drive signals to the switch module to control the switching state of the switch module;

[0007] A driving voltage regulator module is connected to the driving supply module and the switching module. It is used to store the driving signal sent by the driving supply module, and when the driving supply module stops sending the driving signal, the driving voltage regulator module sends the stored driving signal to the switching module to control the switching state of the switching module.

[0008] In some embodiments, the switching state of the switching module includes a conducting state, and the driving signal is used to put the switching module in the conducting state. When the switching module is in the conducting state, the energy storage module and the external load can form a power-on circuit.

[0009] When the energy storage module and the external load form a power-on circuit, the energy storage module supplies power to the external load to enable the external load to start in an emergency.

[0010] The external load includes the vehicle engine, or the external load includes both the vehicle engine and the vehicle battery.

[0011] In some embodiments, the switching state of the switching module includes a conducting state, and the driving signal is used to put the switching module in the conducting state.

[0012] The drive supply module sends the drive signal to the switch module, so that the switch module is in the conducting state, and the drive voltage regulator module also stores the drive signal;

[0013] When the drive supply module stops sending the drive signal, the drive voltage regulator module sends the drive signal to the switch module to keep the switch module in the on state.

[0014] In some embodiments, the power supply control circuit further includes:

[0015] A power switching module, the power switching module including at least a first input terminal, a second input terminal and an output terminal;

[0016] The first input terminal is selectively connected to an external power source, the second input terminal is used to connect to an energy storage module, and the output terminal is connected to the drive supply module, used to selectively transmit the drive power provided by the external power source and / or the energy storage module to the drive supply module.

[0017] In some embodiments, the drive supply module is further configured to connect to the power switching module, and the drive supply module is configured to generate the drive signal based on the drive power supply.

[0018] In some embodiments, the switching module includes an input terminal, an output terminal, and a controlled terminal. The input terminal is used to connect to the energy storage module, the output terminal is used to connect to the external load, and the controlled terminal is used to connect to the drive supply module and the drive voltage regulator module.

[0019] In some implementations, when the drive power supplied by the power switching module does not reach a predetermined voltage threshold, the drive supply module stops sending the drive signal.

[0020] In some embodiments, the power supply control circuit further includes:

[0021] A control module, which is connected to an output control module, is used to send a power supply signal to the output control module;

[0022] An output control module is connected to the control module, the energy storage module, and the power switching module, respectively, and is used to control the on / off relationship between the energy storage module and the power switching module based on the power supply signal.

[0023] In some implementations, the control module includes a first signal port, which is used to send the power supply signal to the output control module through the first signal port.

[0024] In some embodiments, the switching module includes a MOSFET, the drain of which is connected to the energy storage module, the source of which is connected to the external load, and the gate of which is connected to the drive supply module and the drive voltage regulator module to receive the drive signal.

[0025] The drive signal is used to turn on the MOS transistor so that the energy storage module and the external load can form a power-on circuit.

[0026] In some implementations, the MOS transistor is an NMOS transistor.

[0027] In some embodiments, the switching module includes a first MOSFET and a second MOSFET. The drain of the first MOSFET is used to connect to the energy storage module, and the drain of the second MOSFET is used to connect to the external load. The sources of the first MOSFET and the second MOSFET are grounded together. The gates of the first MOSFET and the second MOSFET are used to connect to the drive supply module and the drive voltage regulator module to receive the drive signal.

[0028] The drive signal is used to turn on both the first MOSFET and the second MOSFET, so that the energy storage module and the external load can form a power-on circuit.

[0029] In some implementations, both the first MOS transistor and the second MOS transistor are NMOS transistors.

[0030] In some embodiments, the drive supply module includes an isolation transformer, which has a primary side and a secondary side. The primary side is connected to the power switching module, and the secondary side is connected to the switching module.

[0031] The isolation transformer is used to transmit the drive power from the primary side to the secondary side in order to send a drive signal to the switching module.

[0032] In some embodiments, the drive supply module further includes a first capacitor, a second capacitor, a third capacitor, and a fourth capacitor, wherein the first capacitor and the second capacitor are connected in parallel on the primary side, and the third capacitor and the fourth capacitor are connected in parallel on the secondary side.

[0033] In some embodiments, the drive supply module further includes a first diode, the anode of which is connected to the secondary side, and the cathode of which is connected to the drive voltage regulator module.

[0034] In some embodiments, the power supply control circuit further includes:

[0035] The control module is connected to the voltage regulation control module and is used to send control signals to the voltage regulation control module;

[0036] A voltage regulation control module is connected to both the control module and the isolation transformer, and is used to control the isolation transformer to transmit the drive power from the primary side to the secondary side based on the control signal.

[0037] In some embodiments, the control module includes a second signal port, which is used to send the control signal to the voltage regulation control module.

[0038] In some embodiments, the voltage regulation control module includes a first transistor and a first resistor. The collector of the first transistor is connected to the primary side, the emitter of the first transistor and one end of the first resistor are grounded together, and the base of the first transistor is connected to the other end of the first resistor and the control module to receive the control signal.

[0039] Specifically, when the control signal is high, the first transistor is turned on; when the control signal is low, the first transistor is turned off; the first transistor alternately turns on and off so that the isolation transformer can transmit the driving power from the primary side to the secondary side.

[0040] In some implementations, the first transistor is an NPN transistor.

[0041] In some embodiments, the drive voltage regulator module includes a capacitor, the positive terminal of which is connected to both the drive supply module and the switching module, and the negative terminal of which is grounded.

[0042] In some embodiments, the power switching module includes a second diode, the two positive terminals of which are used to selectively connect to an external power source and to connect to an energy storage module, respectively, and the negative terminal of the second diode is connected to the switching module for selectively transmitting the drive power provided by the external power source and / or the energy storage module to the drive supply module.

[0043] In some embodiments, the output control module includes a second transistor and a second resistor. The emitter of the second transistor is connected to the energy storage module and one end of the second resistor. The collector of the second transistor is connected to the power switching module. The base of the second transistor is connected to the other end of the second resistor and the control module to receive the power supply signal.

[0044] Specifically, when the power supply signal is low, the second transistor is turned on to connect the energy storage module and the power switching module; when the power supply signal is high, the second transistor is turned off to disconnect the energy storage module and the power switching module.

[0045] In some implementations, the second transistor is a PNP transistor.

[0046] The emergency start-up power supply according to the embodiments of this application includes:

[0047] The housing, which includes at least a shell;

[0048] An energy storage module is disposed within the housing;

[0049] The connection port is electrically connected to the energy storage module;

[0050] An output path, which is detachably connected to the connection port, is used to electrically connect the connection port to an external load;

[0051] And a power supply control circuit of any of the above embodiments, wherein the power supply control circuit is disposed on the output path and is used to control the on / off relationship between the energy storage module and the external load.

[0052] In some embodiments, the energy storage module includes a rechargeable battery or a supercapacitor, wherein the rechargeable battery includes at least one of a sodium battery, a lithium battery, and a lead-acid battery.

[0053] In the power supply control circuit and emergency start-up power supply of this application, the drive voltage regulator module stores the drive signals sent by the drive supply module. When the drive supply module stops sending drive signals, the drive voltage regulator module sends the stored drive signals to the switch module to control the switching state of the switch module. Thus, in abnormal situations, the drive voltage regulator module can control the switching state of the switch module, thereby effectively controlling the on / off relationship between the energy storage module and the external load to ensure normal vehicle startup.

[0054] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0055] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort. Among them:

[0056] Figure 1 This is a schematic diagram of the power supply control circuit of some embodiments of this application;

[0057] Figure 2 This is a schematic diagram of the power supply control circuit of some embodiments of this application;

[0058] Figure 3 This is a structural diagram of the power supply control circuit of some embodiments of this application;

[0059] Figure 4 This is a schematic diagram of an emergency start-up power supply module according to certain embodiments of this application.

[0060] Explanation of reference numerals in the attached figures:

[0061] Power supply control circuit 100, switch module 10, input terminal 11, output terminal 12, controlled terminal 13, drive supply module 20, drive voltage regulator module 30, power switching module 40, first input terminal 41, second input terminal 42, output terminal 43, control module 50, first signal port 51, second signal port 52, output control module 60, voltage regulation control module 70, emergency start-up power supply 1000, energy storage module 1001, external power supply 1002, connection port 1003, output path 1004, External load 2000, First MOSFET Q1, Second MOSFET Q2, First transistor Q3, Second transistor Q4, Isolation transformer T1, First capacitor C1, Second capacitor C2, Third capacitor C3, Fourth capacitor C4, Capacitor E1, First diode D1, Second diode D2, Third diode D3, First resistor R1, Second resistor R2, Third resistor R3, Fourth resistor R4, Fifth resistor R5, Sixth resistor R6, Seventh resistor R7, Eighth resistor R8. Detailed Implementation

[0062] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0063] Please see Figure 1The power supply control circuit 100 of this application includes a switching module 10, a drive supply module 20, and a drive voltage regulator module 30. The switching module 10 connects the energy storage module 1001 and an external load 2000, and the switching state of the switching module 10 controls the on / off relationship between the energy storage module 1001 and the external load 2000. The drive supply module 20 is connected to the switching module 10 and sends drive signals to the switching module 10 to control the switching state of the switching module 10. The drive voltage regulator module 30 is connected to the drive supply module 20 and the switching module 10, stores the drive signals sent by the drive supply module 20, and sends the stored drive signals to the switching module 10 when the drive supply module 20 stops sending drive signals, thereby controlling the switching state of the switching module 10.

[0064] In the power supply control circuit 100 of this application embodiment, the drive voltage regulator module 30 stores the drive signals sent by the drive supply module 20. When the drive supply module 20 stops sending drive signals, the drive voltage regulator module 30 sends the stored drive signals to the switch module 10 to control the switching state of the switch module 10. Thus, in abnormal situations, the switching state of the switch module 10 can be controlled by the drive voltage regulator module 30, thereby effectively controlling the on / off relationship between the energy storage module 1001 and the external load 2000 to ensure normal vehicle startup.

[0065] Specifically, the energy storage module 1001 is used to supply power to the external load 2000. The energy storage module 1001 includes, for example, a rechargeable battery or a supercapacitor. The external load 2000 includes, for example, a vehicle engine or a vehicle battery. Figure 2 As shown, BAT+ is the positive terminal of energy storage module 1001, and BAT- is the negative terminal of energy storage module 1001. CAR+ is the positive terminal of the vehicle battery, and CAR- is the negative terminal of the vehicle battery.

[0066] The switching module 10 connects the energy storage module 1001 and the external load 2000 to control the on / off relationship between the energy storage module 1001 and the external load 2000, thereby enabling power transfer. The switching state of the switching module 10 includes an on state and an off state. When the switching module 10 is in the on state, current is allowed to flow from the energy storage module 1001 to the external load 2000, forming a power loop, thus supplying power to the external load 2000. When the switching module 10 is in the off state, the connection between the energy storage module 1001 and the external load 2000 is broken.

[0067] The drive supply module 20 is connected to the switch module 10 and is used to send drive signals to the switch module 10 to control the switching state of the switch module 10. For example, it controls the switch module 10 to be in the on state and the off state.

[0068] The drive voltage regulator module 30 is connected to the drive supply module 20 and the switch module 10. When the drive supply module 20 sends a drive signal to the switch module 10, the drive voltage regulator module 30 can store the drive signal sent by the drive supply module 20 because it is connected to the drive supply module 20. When the drive supply module 20 stops sending drive signals, for example, in abnormal conditions such as low-temperature start-up environments, resulting in insufficient power supply to the drive supply module 20 and inability to send drive signals, the drive voltage regulator module 30 sends the stored drive signal to the switch module 10 to control the switching state of the switch module 10. In this way, the switch module 10 can effectively control the on / off relationship between the energy storage module 1001 and the external load 2000 to ensure normal vehicle start-up.

[0069] Please see Figure 1 In some embodiments, the switching state of the switching module 10 includes a conducting state, and a drive signal is used to put the switching module 10 into the conducting state. When the switching module 10 is in the conducting state, the energy storage module 1001 and the external load 2000 can form a power-on circuit. When the energy storage module 1001 and the external load 2000 form a power-on circuit, the energy storage module 1001 supplies power to the external load 2000 for emergency start-up. The external load 2000 includes a vehicle engine, or the external load 2000 includes both a vehicle engine and a vehicle battery.

[0070] Specifically, when the external load 2000 includes the vehicle engine, the energy storage module 1001 supplies power to the vehicle engine so that the vehicle engine can start smoothly. When the external load 2000 includes both the vehicle engine and the vehicle battery, the energy storage module 1001 supplies power to both the vehicle engine and the vehicle battery so that the vehicle battery can store electrical energy and support the operation of the vehicle's electrical system.

[0071] Please see Figure 1 In some embodiments, the switching state of the switch module 10 includes an ON state, and a drive signal is used to put the switch module 10 in the ON state. The drive supply module 20 sends a drive signal to the switch module 10 to put the switch module 10 in the ON state, and the drive voltage regulator module 30 also stores the drive signal. When the drive supply module 20 stops sending the drive signal, the drive voltage regulator module 30 sends a drive signal to the switch module 10 to maintain the switch module 10 in the ON state.

[0072] Thus, under normal circumstances, the drive supply module 20 sends a drive signal to the switch module 10, putting the switch module 10 into a conducting state. This allows the energy storage module 1001 and the external load 2000 to form a power circuit, and the energy storage module 1001 supplies power to the external load 2000. At this time, the drive voltage regulator module 30 also stores the drive signal. Under abnormal circumstances, the drive supply module 20 stops sending drive signals, and the drive voltage regulator module 30 sends drive signals to the switch module 10 to maintain the switch module 10 in a conducting state. This ensures that the energy storage module 1001 and the external load 2000 maintain a power circuit, and the energy storage module 1001 continues to supply power to the external load 2000.

[0073] Please see Figure 2 and Figure 3 In some embodiments, the power supply control circuit 100 further includes a power switching module 40. The power switching module 40 includes at least a first input terminal 41, a second input terminal 42, and an output terminal 43. The first input terminal 41 is selectively connected to an external power supply 1002, the second input terminal 42 is used to connect to the energy storage module 1001, and the output terminal 43 is connected to the drive supply module 20, used to selectively transmit the drive power provided by the external power supply 1002 and / or the energy storage module 1001 to the drive supply module 20.

[0074] In this embodiment, the drive supply module 20 can be powered by an external power supply 1002 and / or an energy storage module 1001, enabling the drive supply module 20 to send drive signals to the switch module 10, thereby controlling the switching state of the switch module 10. The external power supply 1002 may include a DC-DC power supply circuit, etc. The energy storage module 1001 may include a rechargeable battery, a supercapacitor, etc. Of course, the external power supply 1002 may also include a rechargeable battery or a supercapacitor; this is not a limitation.

[0075] When power is required from an external power supply 1002, the first input terminal 41 can be connected to the external power supply 1002, and the output terminal 43 can transmit the drive power provided by the external power supply 1002 to the drive supply module 20 to power the drive supply module 20. When power is required from the energy storage module 1001, the second input terminal 42 can be connected to the energy storage module 1001, and the output terminal 43 can transmit the drive power provided by the energy storage module 1001 to the drive supply module 20 to power the drive supply module 20.

[0076] Please see Figure 2 and Figure 3 In some embodiments, the drive supply module 20 is also used to connect to the power switching module 40. The drive supply module 20 is used to generate drive signals based on the drive power supply.

[0077] Specifically, the power switching module 40 transmits the drive power to the drive supply module 20. The drive supply module 20 can perform a series of processes on the drive power, such as filtering, stepping down, and isolating, and generate corresponding drive signals to control the switching state of the switching module 10.

[0078] Please see Figure 1 and Figure 3 In some embodiments, the switching module 10 includes an input terminal 11, an output terminal 12, and a controlled terminal 13. The input terminal 11 is used to connect to the energy storage module 1001, the output terminal 12 is used to connect to the external load 2000, and the controlled terminal 13 is used to connect to the drive supply module 20 and the drive voltage regulator module 30.

[0079] Specifically, such as Figure 3 As shown, input terminal 11 is also known as P1, input terminal 12 is also known as P2, and controlled terminal 13 is also known as DC. The drive supply module 20 is used to send drive signals to the controlled terminal 13 to control the switching state of the switch module 10. The drive signal is used to put the switch module 10 in the conducting state, that is, to connect input terminal 11 and output terminal 12, so that the energy storage module 1001 and the external load 2000 can form a power-on circuit, and the energy storage module 1001 supplies power to the external load 2000 for emergency start-up.

[0080] Please see Figure 3 In some embodiments, when the drive power supplied by the power switching module 40 does not reach a predetermined voltage threshold, the drive supply module 20 stops sending drive signals.

[0081] In one example, the predetermined voltage threshold is 12V. When the drive power supplied by the power switching module 40 is less than 12V, the drive supply module 20 stops sending drive signals. The drive signal can be a high-level signal. Of course, in other examples, the predetermined voltage threshold can be other voltage values, which are not limited here.

[0082] In related technologies, DC-DC power supply circuits or batteries are used to directly power the switching module (MOSFET driver). When the DC-DC power supply is insufficient or the battery voltage drops suddenly in a low-temperature start-up environment, it will lead to insufficient power supply for the MOSFET driver, product damage, and in severe cases, a risk of fire.

[0083] In this embodiment, when the driving power supplied by the power switching module 40 fails to reach a predetermined voltage threshold, the drive supply module 20 stops sending drive signals. As mentioned earlier, when the drive supply module 20 stops sending drive signals, the drive voltage regulator module 30 sends stored drive signals to the switch module 10 to control the switching state of the switch module 10, thereby effectively controlling the on / off relationship between the energy storage module 1001 and the external load 2000. Thus, even in cases of insufficient DC-DC power supply or a sudden drop in battery voltage, the switch module 10 can still be powered for a period of time, preventing product damage or safety accidents, and ensuring stable control of the switch module 10 through the stored drive signals.

[0084] Please see Figure 2 and Figure 3 In some embodiments, the power supply control circuit 100 further includes a control module 50 and an output control module 60. The control module 50 is connected to the output control module 60 and is used to send a power supply signal to the output control module 60. The output control module 60 is connected to the control module 50, the energy storage module 1001, and the power switching module 40, respectively, and is used to control the on / off relationship between the energy storage module 1001 and the power switching module 40 based on the power supply signal.

[0085] Specifically, the control module 50 can be a microcontroller unit (MCU). The control module 50 includes a first signal port 51, through which it sends a power supply signal PO_SW to the output control module 60, causing the output control module 60 to be in an on or off state. When the output control module 60 is in the on state, the energy storage module 1001 and the power switching module 40 are connected; when the output control module 60 is in the off state, the energy storage module 1001 and the power switching module 40 are disconnected. Thus, by controlling the on / off relationship between the energy storage module 1001 and the power switching module 40, the drive power provided by the energy storage module 1001 can be transmitted to the power switching module 40, and then further transmitted to the drive supply module 20 via the power switching module 40.

[0086] Please see Figure 3 In some embodiments, the switching module 10 includes a MOSFET (not shown). The drain of the MOSFET is connected to the energy storage module 1001, the source of the MOSFET is connected to the external load 2000, and the gate of the MOSFET is connected to the drive supply module 20 and the drive voltage regulator module 30 to receive a drive signal. The drive signal is used to turn on the MOSFET so that the energy storage module 1001 and the external load 2000 can form a power-on circuit.

[0087] Specifically, the MOSFET can be an NMOS transistor. The drain of the MOSFET serves as the input terminal 11 (P1) of the switching module 10, the source of the MOSFET serves as the output terminal 12 (P2) of the switching module 10, and the gate of the MOSFET serves as the controlled terminal 13 of the switching module 10. When the drive supply module 20 or the drive voltage regulator module 30 sends a drive signal to the controlled terminal 13, the gate of the MOSFET is at a high level, and the MOSFET is turned on, thus forming a power-on circuit between the energy storage module 1001 and the external load 2000. In this way, the power supply from the energy storage module 1001 to the external load 2000 can be controlled by a single MOSFET.

[0088] In this embodiment, the switching module 10 may further include a resistor. The resistor is disposed between the gate of the MOSFET and the drive supply module 20 and the drive voltage regulator module 30. Specifically, one end of the resistor is connected to the gate of the MOSFET, and the other end of the resistor is connected to the drive supply module 20 and the drive voltage regulator module 30 to limit current.

[0089] Please see Figure 3 In some embodiments, the switching module 10 includes a first MOSFET Q1 and a second MOSFET Q2. The drain of the first MOSFET Q1 is connected to the energy storage module 1001, and the drain of the second MOSFET Q2 is connected to the external load 2000. The sources of the first MOSFET Q1 and the second MOSFET Q2 are grounded together. The gates of the first MOSFET Q1 and the second MOSFET Q2 are connected to the drive supply module 20 and the drive voltage regulator module 30 to receive drive signals. The drive signals are used to turn on both the first MOSFET Q1 and the second MOSFET Q2, so that the energy storage module 1001 and the external load 2000 can form a power-on circuit.

[0090] Specifically, both the first MOSFET Q1 and the second MOSFET Q2 can be NMOS transistors. The drain of the first MOSFET Q1 serves as the input terminal 11 (P1 terminal) of the switching module 10, the source of the second MOSFET Q2 serves as the output terminal 12 (P2 terminal) of the switching module 10, and the gates of the first MOSFET Q1 and the second MOSFET Q2 serve as the controlled terminal 13 of the switching module 10. When the drive supply module 20 or the drive voltage regulator module 30 sends a drive signal to the controlled terminal 13, both the gates of the first MOSFET Q1 and the second MOSFET Q2 are at a high level, and both the first MOSFET Q1 and the second MOSFET Q2 are turned on, so that the energy storage module 1001 and the external load 2000 form a power-on circuit. In this way, the power supply of the energy storage module 1001 to the external load 2000 can be controlled by the first MOSFET Q1 and the second MOSFET Q2.

[0091] Furthermore, by setting the first MOSFET Q1 and the second MOSFET Q2, the current flow can be controlled in both directions to achieve bidirectional charging and discharging, thus making the power supply control circuit 100 applicable to a wider range of applications. For example, by replacing the connected external load 2000 with a power supply or power supply circuit, charging of the energy storage module 1001 can be achieved.

[0092] In this embodiment, the switching module 10 may further include a third resistor R3 and a fourth resistor R4. The third resistor R3 is disposed between the gate of the first MOSFET Q1 and the drive supply module 20 and the drive voltage regulator module 30, and the fourth resistor R4 is disposed between the gate of the second MOSFET Q2 and the drive supply module 20 and the drive voltage regulator module 30. Specifically, one end of the third resistor R3 is connected to the gate of the first MOSFET Q1, and the other end of the third resistor R3 is connected to the drive supply module 20 and the drive voltage regulator module 30. One end of the fourth resistor R4 is connected to the gate of the second MOSFET Q2, and the other end of the fourth resistor R4 is connected to the drive supply module 20 and the drive voltage regulator module 30, so as to perform current limiting.

[0093] Please see Figure 3 In some embodiments, the drive supply module 20 includes an isolation transformer T1. The isolation transformer T1 includes a primary side and a secondary side, with the primary side connected to the power switching module 40 and the secondary side connected to the switching module 10. The isolation transformer T1 is used to transmit drive power from the primary side to the secondary side to send drive signals to the switching module 10.

[0094] Specifically, the primary side of the isolation transformer T1 may include a first terminal and a second terminal, and the secondary side may include a third terminal and a fourth terminal. The first terminal is connected to the voltage regulation control module 70 (described later), the second terminal is connected to the power switching module 40, the third terminal is grounded, and the fourth terminal is connected to the switch module 10.

[0095] In this embodiment, the isolation transformer T1 effectively prevents direct electrical connection between the power switching module 40 and the switching module 10 through electrical isolation between its primary and secondary sides, thus achieving power isolation. Furthermore, the isolation transformer T1 can also reduce electromagnetic interference between circuits, improving the stability and reliability of the system.

[0096] Please see Figure 3 In some embodiments, the drive supply module 20 further includes a first capacitor C1, a second capacitor C2, a third capacitor C3, and a fourth capacitor C4. The first capacitor C1 and the second capacitor C2 are connected in parallel on the primary side, and the third capacitor C3 and the fourth capacitor C4 are connected in parallel on the secondary side.

[0097] Specifically, one end of the first capacitor C1 and one end of the second capacitor C2 are connected to the second terminal, and the other ends of the first capacitor C1 and the second capacitor C2 are grounded. One end of the third capacitor C3 and one end of the fourth capacitor C4 are connected to the fourth terminal, and the other ends of the third capacitor C3 and the fourth capacitor C4 are grounded.

[0098] In this embodiment, the drive supply module 20 may further include a fifth resistor R5. The fifth resistor R5 is disposed on the secondary side. Specifically, one end of the fifth resistor R5 is connected to the fourth terminal, and the other end of the fifth resistor R5 is grounded. The fifth resistor R5 can play a voltage stabilizing role.

[0099] Please see Figure 3 In some embodiments, the drive supply module 20 further includes a first diode D1. The positive terminal of the first diode D1 is connected to the secondary side, and the negative terminal of the first diode D1 is connected to the drive voltage regulator module 30.

[0100] Specifically, the positive terminal of the first diode D1 is connected to the fourth terminal. At this time, one end of the third capacitor C3, one end of the fourth capacitor C4, and one end of the fifth resistor R5 are connected to the negative terminal of the first diode D1.

[0101] In this embodiment, a first diode D1 is provided between the secondary side of the isolation transformer T1 and the driving voltage regulator module 30. The first diode D1 has the characteristic of anti-reverse, which can prevent the energy stored in the driving voltage regulator module 30 from being consumed by the isolation transformer T1.

[0102] Please see Figure 2 and Figure 3 In some embodiments, the power supply control circuit 100 further includes a control module 50 and a voltage regulation control module 70. The control module 50 is connected to the voltage regulation control module 70 and is used to send control signals to the voltage regulation control module 70. The voltage regulation control module 70 is connected to both the control module 50 and the isolation transformer T1, and is used to control the isolation transformer T1 to transmit the drive power from the primary side to the secondary side based on the control signals.

[0103] Specifically, as mentioned above, the control module 50 can be a microcontroller unit. The control module 50 includes a second signal port 52, through which the control module 50 sends a control signal MOS_PO_EN to the voltage regulation control module 70, so that the voltage regulation control module 70 is in an on or off state.

[0104] It is understood that the working principle of the isolation transformer T1 relies on electromagnetic induction, requiring the generation of an electromotive force in a changing magnetic field. Therefore, the isolation transformer T1 cannot be directly applied to a DC power supply system (which does not have periodic current changes). In this embodiment, the voltage regulation control module 70 can be continuously turned on and off by the control signal sent by the control module 50, so as to transmit the drive power from the primary side to the secondary side.

[0105] Please see Figure 3 In some embodiments, the voltage regulation control module 70 includes a first transistor Q3 and a first resistor R1. The collector of the first transistor Q3 is connected to the primary side, the emitter of the first transistor Q3 is grounded along with one end of the first resistor R1, and the base of the first transistor Q3 is connected to the other end of the first resistor R1 and the control module 50 to receive control signals. Specifically, when the control signal is high, the first transistor Q3 is turned on; when the control signal is low, the first transistor Q3 is turned off. The first transistor Q3 alternately turns on and off, enabling the isolation transformer T1 to transmit the drive power from the primary side to the secondary side.

[0106] Specifically, the first transistor Q3 can be an NPN transistor. The voltage regulation control module 70 may also include a sixth resistor R6. The sixth resistor R6 is located between the base of the first transistor Q3 and the second signal port 52 of the control module 50. Specifically, one end of the sixth resistor R6 is connected to the base of the first transistor Q3, and the other end of the sixth resistor R6 is connected to the second signal port 52 to limit current.

[0107] Please see Figure 3 In some embodiments, the drive voltage regulator module 30 includes a capacitor E1. The positive terminal of capacitor E1 is connected to both the drive supply module 20 and the switch module 10, and the negative terminal of capacitor E1 is grounded.

[0108] Specifically, capacitor E1 can be a supercapacitor. Compared to traditional electrolytic capacitors, supercapacitors have a higher energy density and can reduce size while maintaining the same energy storage capacity.

[0109] In this embodiment, since capacitor E1 is connected to drive supply module 20 and switch module 10 respectively, when drive supply module 20 sends a drive signal to switch module 10, capacitor E1 stores the drive signal sent by drive supply module 20, and when drive supply module 20 stops sending drive signal, capacitor E1 sends the stored drive signal to switch module 10 to control the switching state of switch module 10.

[0110] Please see Figure 3In some embodiments, the power switching module 40 includes a second diode D2. The two positive terminals of the second diode D2 are used to selectively connect to the external power supply 1002 and to connect to the energy storage module 1001, respectively. The negative terminal of the second diode D2 is connected to the switching module 10, and is used to selectively transmit the drive power provided by the external power supply 1002 and / or the energy storage module 1001 to the drive supply module 20.

[0111] Specifically, the two positive terminals of the second diode D2 serve as the aforementioned first input terminal 41 and second input terminal 42, respectively, and the negative terminal of the second diode D2 serves as the aforementioned output terminal 43. Since the second diode D2 only allows current to flow from the positive terminal to the negative terminal, the drive power provided by the external power supply 1002 and / or the energy storage module 1001 can be selectively transmitted to the drive supply module 20, and it can also play a role in preventing reverse polarity.

[0112] In this embodiment, the power switching module 40 may further include a seventh resistor R7, which is disposed between the second diode D2 and the isolation transformer T1. Specifically, one end of the seventh resistor R7 may be connected to the negative terminal of the second diode D2, and the other end of the seventh resistor R7 may be connected to the second terminal of the isolation transformer T1 to limit current.

[0113] Please see Figure 3 In some embodiments, the output control module 60 includes a second transistor Q4 and a second resistor R2. The emitter of the second transistor Q4 is connected to the energy storage module 1001 and one end of the second resistor R2, the collector of the second transistor Q4 is connected to the power switching module 40, and the base of the second transistor Q4 is connected to the other end of the second resistor R2 and the control module 50 to receive a power supply signal. Specifically, when the power supply signal is low, the second transistor Q4 is turned on, connecting the energy storage module 1001 and the power switching module 40; when the power supply signal is high, the second transistor Q4 is turned off, disconnecting the energy storage module 1001 and the power switching module 40.

[0114] Specifically, the second transistor Q4 can be a PNP transistor. The output control module 60 may also include an eighth resistor R8. The eighth resistor R8 is located between the base of the second transistor Q4 and the first signal port 51 of the control module 50. Specifically, one end of the eighth resistor R8 is connected to the base of the second transistor Q4, and the other end of the eighth resistor R8 is connected to the first signal port 51 to limit current.

[0115] In addition, the output control module 60 may also include a third diode D3. The third diode D3 is disposed between the base of the second transistor Q4 and the first signal port 51 of the control module 50. Specifically, the anode of the third diode D3 is connected to the other end of the eighth resistor R8, and the cathode of the third diode D3 is connected to the first signal port 51 to prevent reverse polarity.

[0116] Please see Figure 4 The emergency start-up power supply 1000 according to this application includes a housing, an energy storage module 1001, a connection port 1003, an output path 1004, and a power supply control circuit 100 of any of the above embodiments. The housing includes at least a casing, the energy storage module 1001 is disposed inside the casing, and the connection port 1003 is electrically connected to the energy storage module 1001. The output path 1004 is detachably connected to the connection port 1003 and is used to electrically connect the connection port 1003 and an external load 2000. The power supply control circuit 100 is disposed on the output path 1004 and is used to control the on / off relationship between the energy storage module 1001 and the external load 2000.

[0117] In the emergency starter power supply 1000 of this application embodiment, the drive voltage regulator module 30 stores the drive signals sent by the drive supply module 20. When the drive supply module 20 stops sending drive signals, the drive voltage regulator module 30 sends the stored drive signals to the switch module 10 to control the switching state of the switch module 10. Thus, in abnormal situations, the drive voltage regulator module 30 can control the switching state of the switch module 10, thereby effectively controlling the on / off relationship between the energy storage module 1001 and the external load 2000 to ensure normal vehicle startup.

[0118] Specifically, the energy storage module 1001 is housed inside the housing, which protects the energy storage module 1001.

[0119] The connector 1003 is electrically connected to the energy storage module 1001 and is used for power transmission between the energy storage module 1001 and the external load 2000. The connector 1003 can be a USB interface, a socket port, etc.

[0120] The output path 1004 is detachably connected to the connection port 1003, forming a transmission channel for electrical energy from the energy storage module 1001 to the external load 2000. The output path 1004 may include wiring assemblies, etc.

[0121] A power supply control circuit 100 is located on the output path 1004 and is used to control the on / off relationship between the energy storage module 1001 and the external load 2000. Specifically, the on / off relationship between the energy storage module 1001 and the external load 2000 can be controlled by controlling the switching state of the switch module 10. When the switch module 10 is in the on state, the energy storage module 1001 and the external load 2000 can form a power circuit, and the energy storage module 1001 supplies power to the external load 2000 for emergency starting. For example, the energy storage module 1001 supplies power to the vehicle engine for emergency starting.

[0122] Please see Figure 4 In some embodiments, the energy storage module 1001 includes a rechargeable battery or a supercapacitor. The rechargeable battery includes at least one of a sodium battery, a lithium battery, and a lead-acid battery.

[0123] Specifically, both the rechargeable battery and the supercapacitor can store electrical energy in advance and provide power to the external load 2000 when needed.

[0124] Sodium batteries are relatively inexpensive and suitable for large-scale energy storage systems. Lithium batteries offer advantages such as high energy density, long cycle life, and low self-discharge rate. Lead-acid batteries are characterized by low cost, mature technology, and high safety. Supercapacitors offer advantages such as high power density, long cycle life, and rapid charge / discharge capabilities. When selecting energy storage module 1001, a suitable module can be chosen based on the specific application scenario and performance requirements of the emergency start-up power supply 1000; no restrictions are imposed here.

[0125] The following is combined Figure 2 and Figure 3 The operation of the power supply control circuit 100 and the emergency start-up power supply 1000 according to the embodiments of this application will be described. It should be noted that... Figure 3 The specific parameters and models of each circuit element are presented as examples only and should not be construed as limitations on the implementation methods of this application.

[0126] Under normal circumstances, the energy storage module 1001 supplies power to the drive supply module 20 sequentially through the output control module 60 and the power switching module 40. The drive supply module 20 outputs a stable 12V voltage and sends a drive signal to the controlled terminal 13 of the switch module 10 (supplying power to the controlled terminal 13 of the switch module 10), enabling the energy storage module 1001 to supply power to the vehicle battery normally. Simultaneously, the drive voltage regulator module 30 stores the drive signal sent by the drive supply module 20 to ensure that the emergency jump starter 1000 operates normally throughout the entire process of starting the car.

[0127] In abnormal situations, such as when starting a car in a low-temperature environment, the energy storage module 1001 outputs energy to the car battery. Due to the low temperature, the lithium battery's activity is poor, its discharge rate decreases, and its internal resistance increases. This causes the voltage of the energy storage module 1001 to drop instantaneously, potentially falling below the minimum threshold of the input voltage to the drive supply module 20. Consequently, the output voltage of the drive supply module 20 also drops and cannot stabilize at 12V. The drive supply module 20 then stops sending drive signals to the controlled terminal 13 of the switch module 10 (due to insufficient power supply to the controlled terminal 13 of the switch module 10). If the power supply control circuit 100 described in this application is not used, the internal resistance of the MOSFET in the switch module 10 will suddenly increase, causing the MOSFET to fail instantly, the switch module 10 to malfunction, and the emergency starter power supply 1000 product to become unusable.

[0128] In this embodiment, since the drive voltage regulator module 30 stores the drive signal sent by the drive supply module 20 when the drive signal is sent to the switch module 10, when the voltage of the energy storage module 1001 is pulled down instantly, the drive voltage regulator module 30 sends the stored drive signal to the controlled terminal 13 of the switch module 10, which can maintain the power supply control of the switch module 10 for a period of time and ensure the normal operation of the emergency start-up power supply 1000 product.

[0129] In summary, in the power supply control circuit 100 and emergency start-up power supply 1000 of this application, the drive voltage regulator module 30 stores the drive signals sent by the drive supply module 20. When the drive supply module 20 stops sending drive signals, the drive voltage regulator module 30 sends the stored drive signals to the switch module 10 to control the switching state of the switch module 10. Thus, in abnormal situations, the switching state of the switch module 10 can be controlled by the drive voltage regulator module 30, thereby effectively controlling the on / off relationship between the energy storage module 1001 and the external load 2000 to ensure normal vehicle startup.

[0130] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of this application. 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 indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0131] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0132] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0133] The foregoing disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0134] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," and "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with an embodiment or example that are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0135] Although embodiments of this application have been shown and described above, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A power supply control circuit, characterized in that, include: A switching module is used to connect the energy storage module and an external load. The switching state of the switching module controls the on / off relationship between the energy storage module and the external load. A drive supply module, connected to the switch module, is used to send drive signals to the switch module to control the switching state of the switch module; A driving voltage regulator module is connected to the driving supply module and the switching module. It is used to store the driving signal sent by the driving supply module, and when the driving supply module stops sending the driving signal, the driving voltage regulator module sends the stored driving signal to the switching module to control the switching state of the switching module.

2. The power supply control circuit according to claim 1, characterized in that, The switching state of the switching module includes a conducting state. The driving signal is used to put the switching module in the conducting state. When the switching module is in the conducting state, the energy storage module and the external load can form a power-on circuit. When the energy storage module and the external load form a power-on circuit, the energy storage module supplies power to the external load to enable the external load to start in an emergency. The external load includes the vehicle engine, or the external load includes both the vehicle engine and the vehicle battery.

3. The power supply control circuit according to claim 1, characterized in that, The switching state of the switching module includes a conducting state, and the driving signal is used to put the switching module in the conducting state. The drive supply module sends the drive signal to the switch module, so that the switch module is in the conducting state, and the drive voltage regulator module also stores the drive signal; When the drive supply module stops sending the drive signal, the drive voltage regulator module sends the drive signal to the switch module to keep the switch module in the on state.

4. The power supply control circuit according to claim 1, characterized in that, The power supply control circuit also includes: A power switching module, the power switching module including at least a first input terminal, a second input terminal and an output terminal; The first input terminal is selectively connected to an external power source, the second input terminal is used to connect to an energy storage module, and the output terminal is connected to the drive supply module, used to selectively transmit the drive power provided by the external power source and / or the energy storage module to the drive supply module.

5. The power supply control circuit according to claim 4, characterized in that, The drive supply module is also used to connect to the power switching module, and the drive supply module is used to generate the drive signal based on the drive power supply.

6. The power supply control circuit according to claim 1, characterized in that, The switching module includes an input terminal, an output terminal, and a controlled terminal. The input terminal is used to connect to the energy storage module, the output terminal is used to connect to the external load, and the controlled terminal is used to connect to the drive supply module and the drive voltage regulator module.

7. The power supply control circuit according to claim 4, characterized in that, When the drive power supplied by the power switching module does not reach the predetermined voltage threshold, the drive supply module stops sending the drive signal.

8. The power supply control circuit according to claim 4, characterized in that, The power supply control circuit also includes: A control module, which is connected to an output control module, is used to send a power supply signal to the output control module; An output control module is connected to the control module, the energy storage module, and the power switching module, respectively, and is used to control the on / off relationship between the energy storage module and the power switching module based on the power supply signal.

9. The power supply control circuit according to claim 6, characterized in that, The switching module includes a MOSFET, the drain of which is connected to the energy storage module, the source of which is connected to the external load, and the gate of which is connected to the drive supply module and the drive voltage regulator module to receive the drive signal. The drive signal is used to turn on the MOS transistor so that the energy storage module and the external load can form a power-on circuit.

10. The power supply control circuit according to claim 6, characterized in that, The switching module includes a first MOSFET and a second MOSFET. The drain of the first MOSFET is used to connect to the energy storage module, and the drain of the second MOSFET is used to connect to the external load. The sources of the first MOSFET and the second MOSFET are grounded together. The gates of the first MOSFET and the second MOSFET are used to connect to the drive supply module and the drive voltage regulator module to receive the drive signal. The drive signal is used to turn on both the first MOSFET and the second MOSFET, so that the energy storage module and the external load can form a power-on circuit.

11. The power supply control circuit according to claim 4, characterized in that, The drive supply module includes an isolation transformer, which has a primary side and a secondary side. The primary side is connected to the power switching module, and the secondary side is connected to the switching module. The isolation transformer is used to transmit the drive power from the primary side to the secondary side in order to send a drive signal to the switching module.

12. The power supply control circuit according to claim 11, characterized in that, The drive supply module further includes a first capacitor, a second capacitor, a third capacitor, and a fourth capacitor. The first capacitor and the second capacitor are connected in parallel on the primary side, and the third capacitor and the fourth capacitor are connected in parallel on the secondary side.

13. The power supply control circuit according to claim 11, characterized in that, The drive supply module further includes a first diode, the anode of which is connected to the secondary side, and the cathode of which is connected to the drive voltage regulator module.

14. The power supply control circuit according to claim 11, characterized in that, The power supply control circuit also includes: The control module is connected to the voltage regulation control module and is used to send control signals to the voltage regulation control module; A voltage regulation control module is connected to both the control module and the isolation transformer, and is used to control the isolation transformer to transmit the drive power from the primary side to the secondary side based on the control signal.

15. The power supply control circuit according to claim 14, characterized in that, The voltage regulation control module includes a first transistor and a first resistor. The collector of the first transistor is connected to the primary side, the emitter of the first transistor and one end of the first resistor are grounded together, and the base of the first transistor is connected to the other end of the first resistor and the control module to receive the control signal. Specifically, when the control signal is high, the first transistor is turned on; when the control signal is low, the first transistor is turned off; the first transistor alternately turns on and off so that the isolation transformer can transmit the driving power from the primary side to the secondary side.

16. The power supply control circuit according to claim 1, characterized in that, The driving voltage regulator module includes a capacitor, the positive terminal of which is connected to the driving supply module and the switching module, and the negative terminal of which is grounded.

17. The power supply control circuit according to claim 4, characterized in that, The power switching module includes a second diode. The two positive terminals of the second diode are used to selectively connect to an external power source and to connect to an energy storage module, respectively. The negative terminal of the second diode is connected to the switching module and is used to selectively transmit the drive power provided by the external power source and / or the energy storage module to the drive supply module.

18. The power supply control circuit according to claim 8, characterized in that, The output control module includes a second transistor and a second resistor. The emitter of the second transistor is connected to the energy storage module and one end of the second resistor. The collector of the second transistor is connected to the power switching module. The base of the second transistor is connected to the other end of the second resistor and the control module to receive the power supply signal. Specifically, when the power supply signal is low, the second transistor is turned on to connect the energy storage module and the power switching module; when the power supply signal is high, the second transistor is turned off to disconnect the energy storage module and the power switching module.

19. An emergency start-up power supply, characterized in that, include: The housing, which includes at least a shell; An energy storage module is disposed within the housing; The connection port is electrically connected to the energy storage module; An output path, which is detachably connected to the connection port, is used to electrically connect the connection port to an external load; And a power supply control circuit as described in any one of claims 1-18, wherein the power supply control circuit is disposed on the output path and is used to control the on / off relationship between the energy storage module and the external load.

20. The emergency start-up power supply according to claim 19, characterized in that, The energy storage module includes a rechargeable battery or a supercapacitor, wherein the rechargeable battery includes at least one of sodium batteries, lithium batteries, and lead-acid batteries.

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