Emergency start circuit, intelligent ignition clip and starting device

Abstract

This application provides an emergency starting circuit, an intelligent ignition clip, and a starting device. The emergency starting circuit includes a switching module and a voltage fluctuation detection module. The emergency starting circuit also has a first input terminal, a second input terminal, a first output terminal, and a second output terminal. The voltage fluctuation detection module is electrically connected to at least one of the first input terminal, the first output terminal, and the branch between them, and is used to detect potential fluctuations at the connection point. When the detected potential fluctuation reaches a fluctuation threshold, the voltage fluctuation detection module triggers the switching module to remain in a conducting state. This avoids frequent switching between on and off states of the switching module, which helps to provide sufficient input power to the electrical load and ensures a high success rate of ignition. Simultaneously, it prevents the switching module from switching on and off under high current conditions, reducing component losses within the switching module and extending its service life.

Description

Technical Field

[0001] This application relates to the field of emergency start technology, and in particular to an emergency start circuit, an intelligent ignition clip, and a start device. Background Technology

[0002] When the output capacity of a car battery is insufficient to meet ignition requirements, an additional starting power source is needed to start the car. This starting power source connects to the car battery via ignition clips to charge the battery or directly provide the electrical power required for starting the car.

[0003] The ignition clip has a first clip and a second clip. When the starting voltage of the starting power supply is applied to the first clip and the second clip, if the first clip and the second clip are removed from the positive and negative terminals of the car battery, respectively, there is a risk of short circuit between the first clip and the second clip.

[0004] In the active state of the ignition clips or starter power supply, several time-interval detection periods are set. During the detection period, the transmission of the starting voltage to the first or second clip is first interrupted by a switching element, and then the voltage between the first and second clips is detected. When the voltage between the first and second clips approaches zero, it is determined that the first or second clip has been removed from the car battery, and the ignition clips or starter power supply needs to be deactivated and enter standby mode, so that the starting voltage is no longer applied between the first and second clips.

[0005] When a user starts a car, electrical loads such as the starter motor need to receive a large current for a short period. However, during the detection phase of the ignition process, the current input to the electrical load stops, causing a decrease in the average input power of the load and potentially leading to ignition failure. Furthermore, switching elements to the open state under high current conditions results in greater wear and tear on the switching elements, shortening their lifespan. Utility Model Content

[0006] Based on this, the present invention provides an emergency starting circuit, an intelligent ignition clip, and a starting device that can solve or at least alleviate the above-mentioned technical problems.

[0007] This invention provides an emergency start circuit for operably connecting a start-up power supply to a load power supply, comprising:

[0008] The first input terminal and the second input terminal are used to electrically connect the first electrode and the second electrode of the power supply, respectively.

[0009] The first output terminal and the second output terminal are used to electrically connect to the first electrode and the second electrode of the load power supply, respectively; the second output terminal is electrically connected to the second input terminal.

[0010] A switching module, electrically connected between the first input terminal and the first output terminal, alternately turns on and off when the first and second output terminals are correctly connected to the load power supply and the operating conditions are met;

[0011] A voltage fluctuation detection module is electrically connected to at least one of the first input terminal, the first output terminal, and the branch between the first input terminal and the first output terminal. It is used to detect potential fluctuations at the connection points. When the detected potential fluctuation reaches the fluctuation threshold, the voltage fluctuation detection module triggers the switch module to remain in the conducting state.

[0012] In the aforementioned emergency start circuit, the electrical load is energized during ignition. Since the electrical load is electrically connected between the first and second electrodes of the load power supply, its resistance is relatively lower than the internal resistance of the start power supply and the resistance of the load power supply. This causes a potential drop fluctuation in the actual voltage at any point—the first input terminal, the first output terminal, and any point in the branch between the first input and first output terminals—relative to the voltage level before ignition. When the detected potential drop fluctuation reaches the fluctuation threshold, the voltage fluctuation detection module is triggered. The switching module responds preferentially to this trigger, directly or indirectly, maintaining its on state. This avoids frequent switching between on and off states during ignition, ensuring sufficient input power to the electrical load and guaranteeing a higher success rate of ignition. Simultaneously, it prevents the switching module from switching on and off under high current conditions, reducing component losses within the switching module and extending its lifespan.

[0013] In one embodiment, a first switch control module is further included; the first switch control module is electrically connected between the voltage fluctuation detection module and the switch module; the first switch control module controls the state of the switch module at least according to the triggering of the voltage fluctuation detection module.

[0014] In one embodiment, the first switch control module includes a timing management chip U4; the timing management chip U4 is provided with a first level locking terminal, a second level locking terminal and an output terminal; the first level locking terminal and the second level locking terminal are electrically connected to the voltage fluctuation detection module; when triggered by the voltage fluctuation detection module, the output terminal continuously outputs a valid level to the switch module, and the valid level is used to trigger the switch module to switch to the on state.

[0015] In one embodiment, the voltage fluctuation detection module includes a fluctuation detection unit and an access coupling unit electrically connected to the fluctuation detection unit; the fluctuation detection unit is electrically connected to at least one of the first input terminal and the first output terminal; when the detected potential fluctuation reaches a fluctuation threshold, the fluctuation detection unit outputs an ignition detection signal to the access coupling unit; when the first output terminal and the second output terminal are correctly connected to the load power supply and the operating conditions are met, upon receiving the ignition detection signal, the access coupling unit triggers the switching module to remain in the on state.

[0016] In one embodiment, the fluctuation detection unit includes a switch Q11, a diode D4, a capacitor C23, and a fluctuation current limiting branch; the anode of the diode D4 is electrically connected to the first input terminal or the first output terminal; the capacitor C23 is electrically connected between the cathode of the diode D4 and ground; the cathode of the diode D4 is also electrically connected to one current-carrying terminal of the switch Q11; one end of the fluctuation current limiting branch is electrically connected to the control terminal of the switch Q11, and the other end is electrically connected to the first input terminal or the first output terminal; the other current-carrying terminal of the switch Q11 is used to output an ignition detection signal to the access coupling unit.

[0017] In one embodiment, the fluctuation current limiting branch includes a resistor R87, one end of which is electrically connected to the control terminal of the switch Q11, and the other end is electrically connected to the first input terminal or the first output terminal; or, the fluctuation current limiting branch includes a resistor R87 and a diode D6 connected in series, wherein the unidirectional conduction direction of the diode D6 corresponds to the current outflow direction from the control terminal of the switch Q11.

[0018] In one embodiment, the fluctuation detection unit further includes a resistor R15, which is electrically connected between another current-carrying terminal of the switch Q11 and the access coupling unit.

[0019] In one embodiment, the access coupling unit includes a switch Q9, a switch Q14, a switch Q23, a resistor R7, and a first voltage divider branch; one current-carrying terminal of the switch Q9 is used to receive a connection confirmation signal; the resistor R7 is electrically connected between one current-carrying terminal of the switch Q9 and the control terminal of the switch Q9; one current-carrying terminal of the switch Q14 is electrically connected to the control terminal of the switch Q9, and the other current-carrying terminal is grounded; the control terminal of the switch Q14 is used to receive the ignition detection signal; the first voltage divider branch is electrically connected between the other current-carrying terminal of the switch Q9 and ground; the intermediate node of the first voltage divider branch is electrically connected to the control terminal of the switch Q23; one current-carrying terminal of the switch Q23 is used to trigger the switch module to remain in a conducting state, and the other current-carrying terminal is grounded.

[0020] This invention provides an intelligent ignition clip for operably connecting a starting power supply to a load power supply, comprising:

[0021] The shell, and

[0022] In any of the above embodiments, the emergency start circuit is disposed inside the housing, and the start power supply is disposed outside the housing.

[0023] This invention provides a starting device, comprising:

[0024] case;

[0025] The power supply is located inside the housing; and

[0026] The emergency start circuit of any of the above embodiments is disposed within the housing. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a starting device according to an embodiment of this application.

[0028] Figure 2a This is a schematic diagram of the circuit structure of a voltage fluctuation detection module according to an embodiment of this application.

[0029] Figure 2b This is a schematic diagram of the circuit structure of a voltage fluctuation detection module according to another embodiment of this application.

[0030] Figure 3 This is a schematic diagram of the circuit structure of a switching module according to an embodiment of this application.

[0031] Figure 4 This is a schematic diagram of the structure of an intelligent ignition clip according to an embodiment of this application.

[0032] Figure 5 for Figure 4The circuit structure diagram of the first switch control module and voltage fluctuation detection module in the intelligent ignition clip is shown.

[0033] Figure 6 for Figure 4 The circuit diagram of the switch module in the intelligent ignition clip is shown.

[0034] Figure 7 for Figure 4 The circuit structure diagram of the first docking detection module and the second access detection module in the intelligent ignition clip is shown.

[0035] Figure 8 This is a schematic diagram of the structure of an emergency start circuit according to an embodiment of this application.

[0036] Figure 9 for Figure 8 The diagram shows the circuit structure of the forced start module and reverse connection protection module in the emergency start circuit.

[0037] Figure 10 for Figure 8 The circuit structure diagram of the second switch control module in the emergency start circuit shown is shown.

[0038] Figure 11 for Figure 8 The diagram shows the circuit structure of the overload detection module in the emergency start circuit.

[0039] Figure 12 for Figure 8 The diagram shows the circuit structure of the voltage detection module in the emergency start circuit.

[0040] Figure 13 for Figure 8 The diagram shows the circuit structure of the temperature detection module in the emergency start circuit.

[0041] Figure 14a for Figure 8 The diagram shows the circuit structure of the light indicator module in the emergency start circuit.

[0042] Figure 14b for Figure 8 The diagram shows the circuit structure of the audible alarm module in the emergency start circuit.

[0043] Figure 15 for Figure 8 The diagram shows the circuit structure of the voltage regulator module in the emergency start-up circuit.

[0044] Reference numerals: 200, starting device; 201, starting power supply; 300, intelligent ignition clip; 400, emergency starting circuit; Vin1, first input terminal; Vin2, second input terminal; Vout1, first output terminal; Vout2, second output terminal; 41, switch module; 411, switch driver unit; 42, sound alarm module; 43, light indicator module; 44, voltage detection module; 45, temperature detection module; 46, first switch control module; 47, first access detection module; 471, access driver unit. 472. Short-circuit protection unit; 48. Second switch control module; 49. Voltage stabilizing module; 71. Second access detection module; 711. First judgment unit; 72. Voltage fluctuation detection module; 721. Fluctuation detection unit; 722. Access coupling unit; 73. Force start module; 731. Control unit; 732. Delayed voltage divider unit; 733. Locking unit; 74. Reverse connection protection module; 81. Overload detection module; 811. Second judgment unit; 812. Output unit; 601. Load power supply; 602. Electrical load. Detailed Implementation

[0045] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0046] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0047] 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 fixed connections, detachable connections, integral connections, mechanical connections, electrical connections, direct connections, indirect connections via an intermediate medium, or internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0048] The technical solutions provided by the embodiments of this application are described below with reference to the accompanying drawings.

[0049] Combination Figure 1 As shown, this application provides a starting device 200. The starting device 200 includes a starting power supply 201 and an emergency starting circuit 400 electrically connected to the starting power supply 201. The emergency starting circuit 400 is used to operably connect the starting power supply 201 to a load power supply 601.

[0050] Understandably, the starting power supply 201 can output electrical energy to the load power supply 601 through the emergency starting circuit 400, and the emergency starting circuit 400 can control the connection and disconnection of the circuit between the starting power supply 201 and the load power supply 601.

[0051] Understandably, the startup power supply 201 is a device capable of outputting a DC voltage. Optionally, the startup power supply 201 is capable of charging and discharging; exemplarily, the startup power supply 201 is an energy storage battery, energy storage capacitor, or other energy storage device. Exemplarily, the startup power supply 201 has a first electrode and a second electrode. Exemplarily, the first electrode of the startup power supply 201 is a positive electrode, and the second electrode of the startup power supply 201 is a negative electrode.

[0052] Understandably, the starting power supply 201 provides charging voltage to the load power supply 601 through the emergency start circuit 400. Specifically, the load power supply 601 has a first electrode and a second electrode. Exemplarily, the load power supply 601 is a car battery. Exemplarily, the first electrode of the load power supply 601 is positive, and the second electrode of the load power supply 601 is negative. Exemplarily, the negative terminals of the starting power supply 201 and the load power supply 601 are respectively grounded.

[0053] Specifically, the load power supply 601 is connected in parallel with the electrical load 602, and the starting device 200 is also used to provide operating current to the electrical load 602. The electrical load 602 is electrically connected between the first electrode and the second electrode of the load power supply 601.

[0054] For example, electrical load 602 includes a vehicle starter motor for driving the crankshaft of the engine to rotate until the crankshaft reaches a sufficient speed to start itself. Understandably, providing operating current to electrical load 602 via starting device 200 helps ensure that the vehicle can be started.

[0055] In some embodiments, the starting device 200 further includes a housing. Optionally, the starting power supply 201 is disposed within the housing. Optionally, the emergency starting circuit 400 is wholly or partially disposed within the housing. Optionally, the starting power supply 201 and the emergency starting circuit 400 are encapsulated within the same housing.

[0056] Combination Figure 4As shown, this application also provides a smart ignition clip 300. The smart ignition clip 300 includes a housing and an emergency starting circuit 400. The smart ignition clip 300 is used to operably connect a starting power supply 201 to a load power supply 601. The starting power supply 201 outputs electrical energy to the load power supply 601 through the smart ignition clip 300. Understandably, the smart ignition clip 300 can control the on / off state of the circuit between the starting power supply 201 and the load power supply 601.

[0057] Combination Figure 1 and Figure 4 As shown, this application also provides an emergency start circuit 400, which can be applied to at least the above-mentioned start device 200 or intelligent ignition clip 300.

[0058] Specifically, the emergency start circuit 400 includes a switching module 41 and a voltage fluctuation detection module 72. The emergency start circuit 400 also has a first input terminal Vin1, a second input terminal Vin2, a first output terminal Vout1, and a second output terminal Vout2. The first input terminal Vin1 and the second input terminal Vin2 are used to electrically connect to the first and second electrodes of the starting power supply 201, respectively. The second output terminal Vout2 is electrically connected to the second input terminal Vin2. The first output terminal Vout1 and the second output terminal Vout2 are used to electrically connect to the first and second electrodes of the load power supply 601, respectively. The switching module 41 is electrically connected between the first input terminal Vin1 and the first output terminal Vout1. When the first output terminal Vout1 and the second output terminal Vout2 are correctly connected to the load power supply 601 and the operating conditions are met, the switching module 41 alternately turns on and off. The voltage fluctuation detection module 72 is used to electrically connect to at least one of the first input terminal Vin1, the first output terminal Vout1, and the branch between the first input terminal Vin1 and the first output terminal Vout1. The voltage fluctuation detection module is used to detect potential fluctuations at the connection point. When the detected potential fluctuation reaches the fluctuation threshold, the voltage fluctuation detection module 72 triggers the switch module 41 to remain in the conducting state.

[0059] The emergency start circuit 400 of this application, when the first input terminal Vin1 and the second input terminal Vin2 are electrically connected to the first and second electrodes of the starting power supply 201, respectively, and the first output terminal Vout1 and the second output terminal Vout2 are electrically connected to the first and second electrodes of the load power supply 601, respectively, forms an electrical circuit between the starting power supply 201, the load power supply 601, and the switching module 41. The switching module 41 controls the conduction of this electrical circuit. Understandably, the switching module 41 has an on state and an off state.

[0060] Understandably, in the absence of ignition, the voltage at the first input terminal Vin1 or the first output terminal Vout1 is in a relatively stable state. When the switch module 41 is in the on state, the voltage at the first input terminal Vin1 is equal to the voltage at the first output terminal Vout1.

[0061] Understandably, assuming the first and second output terminals are correctly connected to the load power supply, the switching module alternately turns on and off under the condition that no ignition operation occurs. More specifically, this condition is that the potential fluctuation at the connection point of the voltage fluctuation detection module does not reach the fluctuation threshold.

[0062] When ignition occurs, the electrical load 602 is energized. Since the electrical load 602 is electrically connected between the first and second electrodes of the load power supply 601, its resistance is relatively lower than the internal resistance of the starting power supply 201 and the resistance of the load power supply 601. This causes a certain potential drop fluctuation in the actual voltage at any point on the first input terminal Vin1, the first output terminal Vout1, and any point on the branch between the first input terminal Vin1 and the first output terminal Vout1, relative to the voltage level before ignition. When the detected potential drop fluctuation reaches the fluctuation threshold, the voltage fluctuation detection module 72 is triggered. The switching module 41 responds preferentially to the triggering of the voltage fluctuation detection module 72, maintaining its conducting state. This avoids frequent switching between on and off states by the switching module 41 during ignition, which helps provide sufficient input power to the electrical load 602 and ensures a higher success rate of ignition. Simultaneously, it prevents the switching module 41 from switching on and off under high current conditions, reducing component losses within the switching module 41 and extending its service life.

[0063] In some implementations, the emergency start circuit 400 is housed within the housing of the starter 200.

[0064] Optionally, the starting power supply 201 is housed within the housing of the starting device 200.

[0065] In some embodiments, the emergency start circuit 400 is disposed within the housing of the smart ignition clip 300. The starting power supply 201 is disposed outside the housing of the smart ignition clip 300. Exemplarily, the switching module 41 and the voltage fluctuation detection module 72 of the emergency start circuit 400 are disposed within the housing of the smart ignition clip 300.

[0066] In some embodiments, when the emergency start circuit 400 is applied to the smart ignition clip 300, both the first output terminal Vout1 and the second output terminal Vout2 are configured as clips, which are disposed outside the housing. Understandably, the first output terminal Vout1 and the second output terminal Vout2 adopt a clip-like structure, which can be clamped to the first electrode and the second electrode of the load power supply 601, respectively.

[0067] In some other embodiments, the first output terminal Vout1 and the second output terminal Vout2 may adopt a ring-shaped structure. A screw passes through either the first output terminal Vout1 or the second output terminal Vout2 and is threadedly connected to the first electrode or the second electrode of the load power supply 601, thus fixing the connection between the first output terminal Vout1 and the first electrode, or the second output terminal Vout2 and the second electrode. In still other embodiments, the first output terminal Vout1 and the second output terminal Vout2 may also adopt a pluggable structure, connecting to the first electrode or the second electrode of the load power supply 601 via a plug-in connection.

[0068] For example, the branch between the first input terminal Vin1 and the first output terminal Vout1 includes at least the switching module 41. Optionally, the connection point of the voltage fluctuation detection module can be any end of the switching module 41. Optionally, the connection point of the voltage fluctuation detection module is located in the conductor between one end of the switching module 41 and the first input terminal Vin1. Optionally, the connection point of the voltage fluctuation detection module is located in the conductor between the other end of the switching module 41 and the first output terminal Vout1.

[0069] In some implementations, combined Figure 1 and Figure 3 As shown, the voltage fluctuation detection module 72 is electrically connected to the switch module 41. When triggered by the voltage fluctuation detection module 72, the switch module 41 remains in the on state. Exemplarily, the voltage fluctuation detection module 72 triggers the switch module 41 by issuing a start-up identification signal. Understandably, the start-up identification signal can be directly transmitted to the switch module 41, directly triggering the switch module 41.

[0070] Understandably, the second output terminal Vout2 is grounded.

[0071] In some implementations, combined Figure 4 and Figure 6As shown, the emergency start circuit 400 also includes an access detection module, used to output a connection confirmation signal when it detects that the first output terminal Vout1 and the second output terminal Vout2 are correctly connected to the first electrode and the second electrode of the load power supply 601, respectively. Upon receiving the connection confirmation signal and detecting a potential fluctuation reaching a fluctuation threshold, the voltage fluctuation detection module 72 outputs a start identification signal. Understandably, even if a potential fluctuation reaches a fluctuation threshold, the voltage fluctuation detection module 72 will not output a start identification signal if the connection confirmation signal is not received, thereby preventing the switch module 41 from entering the conduction state before the first output terminal Vout1 and the second output terminal Vout2 are correctly connected to the first electrode and the second electrode of the load power supply 601, and preventing arc discharge during the connection process.

[0072] Understandably, when correctly connected, the first output terminal Vout1 forms a stable electrical contact with the first electrode of the load power supply 601, and the second output terminal Vout2 forms a stable electrical contact with the second electrode of the load power supply 601.

[0073] In some implementations, combined Figure 4 As shown, the emergency start circuit 400 also includes a first switch control module 46. The first switch control module 46 is electrically connected between the voltage fluctuation detection module 72 and the switch module 41. The first switch control module 46 controls the state of the switch module 41 based on the triggering of the voltage fluctuation detection module 72. For example, the start identification signal can be directly transmitted to the first switch control module 46, indirectly triggering the switch module 41. The first switch control module 46 can control the switch module 41 to switch to the on state or the off state.

[0074] In some implementations, combined Figure 4 As shown, when a connection confirmation signal is received but a start identification signal is not received, the first switch control module 46 alternately times the power-on period and the detection period. During the power-on period, the first switch control module 46 triggers the switch module 41 to switch to the on state, and during the detection period, it triggers the switch module 41 to switch to the off state. Understandably, since the switch module 41 is in the on state during the power-on period, the voltage of the starting power supply 201 can be intermittently transmitted to the first and second electrodes of the load power supply 601 through the first output terminal Vout1 and the second output terminal Vout2, thereby providing charging voltage to the load power supply 601 and ensuring that the output voltage of the starting power supply 201 can be transmitted to the electrical load 602 in the vehicle when the vehicle ignition operation occurs.

[0075] During the detection period, the switch module 41 is in the off state, so the path between the starting power supply 201 and the first output terminal Vout1 disappears, and the output voltage of the starting power supply 201 is not applied to the first output terminal Vout1. At this time, if the first output terminal Vout1 and the second output terminal Vout2 are correctly connected to the first electrode and the second electrode of the load power supply 601 respectively, the voltage of the first output terminal Vout1 can reflect the voltage between the first electrode and the second electrode of the load power supply 601. Understandably, the setting of the detection period creates the detection conditions for the correct connection of the first output terminal Vout1 and the second output terminal Vout2.

[0076] Understandably, when the first output terminal Vout1 or the second output terminal Vout2 is removed from the load power supply 601, during the detection period, since the switch module 41 is in the open state, the voltage between the first output terminal Vout1 and the second output terminal Vout2 can reflect the connection relationship between the first output terminal Vout1 and the second output terminal Vout2 and the electrodes of the load power supply 601, thereby creating conditions for determining the correct connection between the first output terminal Vout1 and the second output terminal Vout2 and the electrodes of the load power supply 601.

[0077] Specifically, the duration of the energizing period is longer than the duration of the detection period. Understandably, when the detection period is relatively shorter than the energizing period, it will not significantly affect the power supply to the load power supply 601. More specifically, when the detection period is much shorter than the energizing period, the intermittent power transfer from the starting power supply 201 to the load power supply 601 is close in performance to continuous power transfer.

[0078] In some embodiments, the duration of the energizing period ranges from 0.5s to 30s. In some embodiments, the duration of the energizing period is 1s, 3s, 5s, 10s, or 20s. In some embodiments, the duration of the detection period ranges from 5ms to 1s. In some embodiments, the duration of the detection period is 10ms, 15ms, 30ms, 400ms, or 800ms.

[0079] In some implementations, combined Figure 4As shown, upon receiving the connection confirmation signal and the start identification signal, the first switch control module 46 triggers the switch module 41 to remain in the on state. This prevents the switch module 41 from entering the on state before the first output terminal Vout1 and the second output terminal Vout2 are correctly connected to the first and second electrodes of the load power supply 601, respectively, thus preventing arc discharge during the connection process. Simultaneously, during ignition operations, this prevents the switch module 41 from being switched to the off state due to the influence of other modules, which helps to provide sufficient input power to the electrical load 602 and ensures a high success rate of ignition.

[0080] Understandably, upon simultaneously receiving both the connection confirmation signal and the start identification signal, the first switch control module 46 triggers the switch module 41 to stably maintain the on state, avoiding repeated switching between the on and off states, thereby providing sufficient input power to the electrical load 602. Simultaneously, it avoids switching the switch module 41 when a large current is required, reducing component losses within the switch module 41 and extending its service life.

[0081] Understandably, the first switch control module 46 has a ready state. In the ready state, if the first switch control module 46 does not receive a start identification signal, it alternately times the power-on period and the detection period. In the ready state, if the first switch control module 46 receives a start identification signal, it only triggers the switch module 41 to switch to the on state. Understandably, a connection confirmation signal can trigger the first switch control module 46 to switch to the ready state.

[0082] Optionally, the connection confirmation signal is in the form of a high level, so that the connection confirmation signal can be used as the power supply voltage for the first switch control module 46. When the first switch control module 46 receives the connection confirmation signal, it is equivalent to the first switch control module 46 being in a powered-on state.

[0083] Optionally, the connection confirmation signal can also be used as an enable signal and input to the enable pin in the first switch control module 46 to switch the first switch control module 46 from the disabled state to the ready state.

[0084] In some implementations, combined Figure 4As shown, the access detection module includes a first access detection module 47, which is used to detect the voltage of the first output terminal Vout1. When the voltage of the first output terminal Vout1 is greater than a first voltage threshold, the first access detection module 47 outputs a connection confirmation signal. Specifically, the first access detection module 47 is mainly used to confirm that the first output terminal Vout1 and the second output terminal Vout2 are correctly connected to the first electrode and the second electrode of the load power supply 601, respectively, when the switch module 41 is in the off state and no car ignition operation occurs.

[0085] Understandably, when the first output terminal Vout1 and the second output terminal Vout2 are correctly connected to the first and second electrodes of the load power supply 601, respectively, the switch module 41 is in the off state, and no vehicle ignition operation occurs, the voltage of the load power supply 601 is applied between the first output terminal Vout1 and the second output terminal Vout2. Since the first access detection module 47 is electrically connected to the first output terminal Vout1, and the voltage of the load power supply 601 is generally greater than the first voltage threshold, the first access detection module 47 outputs a connection confirmation signal when it detects that the voltage of the first output terminal Vout1 is greater than the first voltage threshold.

[0086] Understandably, the first access detection module 47 is used to confirm, during the detection period, that the first output terminal Vout1 and the second output terminal Vout2 are correctly connected to the first electrode and the second electrode of the load power supply 601, respectively, based on the relationship between the voltage of the first output terminal Vout1 and the first voltage threshold.

[0087] Specifically, during the detection period, the switch module 41 electrically isolates the first output terminal Vout1 from the positive terminal of the startup power supply 201.

[0088] Understandably, during the detection period, if the first output terminal Vout1 and the second output terminal Vout2 maintain conductive contact with the first electrode and the second electrode of the load power supply 601, respectively, then the voltage of the first output terminal Vout1 is equal to the voltage of the first electrode of the load power supply 601. Since the voltage of the first electrode of the load power supply 601 is greater than the first voltage threshold, the voltage of the first output terminal Vout1 is also greater than the first voltage threshold.

[0089] Understandably, during the detection period, if at least one of the first output terminal Vout1 and the second output terminal Vout2 is disconnected from the electrode of the load power supply 601, then there is no voltage at the first output terminal Vout1, and the voltage at the first output terminal Vout1 will not be greater than the first voltage threshold.

[0090] Therefore, during the detection period, it can be determined whether the first output terminal Vout1 and the second output terminal Vout2 are correctly connected to the first electrode and the second electrode of the load power supply 601 by detecting the voltage of the first output terminal Vout1.

[0091] Optionally, the first switch control module 46 is electrically connected to the control terminal of the switch module 41.

[0092] For example, the first access detection module 47 is electrically connected between the first output terminal Vout1 and the second output terminal Vout2.

[0093] Optionally, combined Figure 4 and Figure 8 As shown, the first access detection module 47 is electrically connected between the reference voltage point and the first switch control module 46. The first access detection module 47 has both a conducting state and an off state between the reference voltage point and the first switch control module 46. When the voltage at the first output terminal Vout1 is greater than the first voltage threshold, the first access detection module 47 is in the conducting state, thereby outputting a high-level connection confirmation signal. Understandably, when the first access detection module 47 is in the conducting state, the first switch control module 46 is electrically connected to the reference voltage point through the first access detection module 47, enabling the first switch control module 46 to obtain power. It then alternately times the power-on period and the detection period, and triggers the switch module 41 to switch to the conducting state during the power-on period.

[0094] In some other embodiments, the first access detection module 47 is not connected between the reference voltage point and the first switch control module 46, meaning the first switch control module 46 does not need to obtain operating current through the first access detection module 47. Understandably, the connection confirmation signal can be used to trigger an internal branch of the first switch control module 46, allowing operating current to flow into the first switch control module 46 through this internal branch.

[0095] Understandably, combined Figure 4 As shown, after the first output terminal Vout1 and the second output terminal Vout2 are correctly connected to the two electrodes of the load power supply 601, the voltage of the first output terminal Vout1 is greater than the first voltage threshold under the voltage of the load power supply 601. Subsequently, if a car ignition operation occurs, due to the high load of the electrical load 602, the voltage of the first output terminal Vout1 will drop from greater than the first voltage threshold to less than or equal to the first voltage threshold. Therefore, when the switch module 41 is in the off state and a car ignition operation occurs, the first access detection module 47 cannot determine whether the first output terminal Vout1 and the second output terminal Vout2 are correctly connected to the two electrodes of the load power supply 601 based on the voltage of the first output terminal Vout1.

[0096] In some implementations, combined Figure 4 As shown, the access detection module includes a second access detection module 71. The second access detection module 71 outputs a detection voltage to the first output terminal Vout1, which decreases as the resistance between the first output terminal Vout1 and the second output terminal Vout2 decreases. When the detection voltage is less than a second voltage threshold, the second access detection module 71 sends a connection confirmation signal to at least one output of the first access detection module 47. Specifically, the second access detection module 71 is used to confirm that the first output terminal Vout1 and the second output terminal Vout2 are correctly connected to the first and second electrodes of the load power supply 601, respectively, when the switch module 41 is in the off state and an ignition operation occurs.

[0097] Understandably, when the first output terminal Vout1 and the second output terminal Vout2 are correctly connected to the first and second electrodes of the load power supply 601 respectively, and an ignition operation of the car occurs, according to the circuit model of the load power supply 601, even if the voltage between the first and second electrodes of the load power supply 601 drops to near zero due to the excessive electrical load 602, the load power supply 601 and the electrical load 602 still have resistance respectively.

[0098] When the first output terminal Vout1 and the second output terminal Vout2 are correctly connected to the first electrode and the second electrode of the load power supply 601, respectively, the other resistive devices between the first output terminal Vout1 and the second output terminal Vout2 form a parallel connection with the internal resistance of the load power supply 601. The resistance value between the first output terminal Vout1 and the second output terminal Vout2 is less than the resistance value of any one of the other resistive devices between the first output terminal Vout1 and the second output terminal Vout2 and the internal resistance of the load power supply 601. Therefore, when the car ignition operation occurs, although the voltage of the first output terminal Vout1 cannot be guaranteed to be greater than the first voltage threshold, under the parallel action of the load power supply 601 and the electrical load 602, the resistance between the first output terminal Vout1 and the second output terminal Vout2 is relatively reduced, making the detection voltage less than the second voltage threshold. This allows at least one of the second access detection module 71 and the first access detection module 47 to output a connection confirmation signal at this time, preventing the first switch control module 46 from exiting the ready state due to the elimination of the connection confirmation signal. This ensures that the voltage of the starting power supply 201 can be promptly transmitted to the load power supply 601 after the detection period ends, preventing the voltage drop caused by the ignition operation from keeping the switch module 41 completely disconnected, and ensuring that the charging and ignition power supply to the load power supply 601 are not affected by the voltage drop of the load power supply 601.

[0099] Understandably, the other resistive devices between the first output terminal Vout1 and the second output terminal Vout2 can be resistive elements inside the second access detection module 71 or resistive elements outside the second access detection module 71.

[0100] Understandably, during the detection period, when no vehicle ignition operation occurs, the first access detection module 47 is used to confirm that the first output terminal Vout1 and the second output terminal Vout2 are correctly connected to the first and second electrodes of the load power supply 601, respectively, based on the relationship between the voltage of the first output terminal Vout1 and the first voltage threshold. The second access detection module 71, when a vehicle ignition operation occurs, is used to confirm that the first output terminal Vout1 and the second output terminal Vout2 are correctly connected to the first and second electrodes of the load power supply 601, respectively, based on the relationship between the detected voltage and the second voltage threshold.

[0101] Understandably, during the detection period, if at least one of the first output terminal Vout1 and the second output terminal Vout2 is disconnected from the electrode of the load power supply 601, then the other resistive devices between the first output terminal Vout1 and the second output terminal Vout2 will not continue to be connected in parallel with the load power supply 601, causing the resistance value between the first output terminal Vout1 and the second output terminal Vout2 to rise, and the detection voltage will not be less than the second voltage threshold, so no connection confirmation signal will be generated.

[0102] In some implementations, when the connection confirmation signal is absent, the first switch control module 46 exits the ready state. Since it is not triggered by the first switch control module 46, the switch module 41 remains in the disconnected state, and the output voltage of the power supply 201 stops being applied between the first output terminal Vout1 and the second output terminal Vout2. This prevents a short circuit between the first output terminal Vout1 and the second output terminal Vout2 after the first output terminal Vout1 and the second output terminal Vout2 are separated from the first electrode and the second electrode of the load power supply 601, respectively.

[0103] Optionally, combined Figure 4 and Figure 7 As shown, the second access detection module 71 is electrically connected to the first access detection module 47.

[0104] In some implementations, when the voltage at the first output terminal Vout1 is greater than a first voltage threshold, the first access detection module 47 outputs a connection confirmation signal. When the detected voltage is less than a second voltage threshold, the second access detection module 71 triggers the first access detection module 47 to output a connection confirmation signal. Thus, when the detected voltage is less than the second voltage threshold, a connection confirmation signal is indirectly output to the first switch control module 46 through the first access detection module 47.

[0105] For example, when the detected voltage is less than the second voltage threshold, the second access detection module 71 outputs a resistive access signal to the first access detection module 47. The resistive access signal is used to trigger the first access detection module 47 to output a connection confirmation signal. For example, the resistive access signal is used to trigger the first access detection module 47 to switch to the on state, allowing the operating current to be transferred from the reference voltage point to the first switch control module 46.

[0106] In some other embodiments, the second access detection module 71 is electrically connected to the first switch control module 46. When the detected voltage is less than the second voltage threshold, the second access detection module 71 directly outputs a connection confirmation signal to the first switch control module 46.

[0107] In some implementations, during the window period after the voltage at the first output terminal Vout1 drops below the first voltage threshold, when the detected voltage is less than the second voltage threshold, the first switch control module 46 remains in a ready state upon triggering by the second access detection module 71. Understandably, before the voltage at the first output terminal Vout1 exceeds the first voltage threshold, the first output terminal Vout1 and the second output terminal Vout2 are not fully connected to the two electrodes of the load power supply 601. In this case, the first switch control module 46 will not enter the ready state solely upon triggering by the second access detection module 71, thereby preventing the output voltage of the power supply 201 from being transmitted between the first output terminal Vout1 and the second output terminal Vout2 under the action of the first switch control module 46, and preventing a short circuit between the first output terminal Vout1 and the second output terminal Vout2.

[0108] Understandably, after the voltage at the first output terminal Vout1 drops below the first voltage threshold, the first switch control module 46 will only respond to the trigger of the second access detection module 71 and remain in the ready state within the window period. If a considerable amount of time has passed since the voltage at the first output terminal Vout1 is not greater than the first voltage threshold, the first output terminal Vout1 and the second output terminal Vout2 may have already been disconnected from the two electrodes of the load power supply 601. Since the first switch control module 46 no longer responds to the trigger of the second access detection module 71 and enters the ready state after the window period, short-circuit contact is avoided after the first output terminal Vout1 and the second output terminal Vout2 are disconnected from the two electrodes of the load power supply 601. More specifically, the starting point of the window period can be the time point corresponding to the time when the voltage at the first output terminal Vout1 drops to be equal to the first voltage threshold. The length of the window period can be set according to actual conditions. In one embodiment, the length of the window period is not greater than the length of the detection period.

[0109] For example, when the voltage at the first output terminal Vout1 drops below the first voltage threshold, after the first switch control module 46 is triggered by the second access detection module 71 to enter the ready state during the window period, the ready state of the first switch control module 46 is maintained at least until the detection voltage is no longer lower than the second voltage threshold.

[0110] Specifically, if the condition of the load power supply 601 is poor, the voltage between the two electrodes of the load power supply 601 will be less than or equal to the first voltage threshold even without vehicle ignition. This means that even after the first output terminal Vout1 and the second output terminal Vout2 are correctly connected to the two electrodes of the load power supply 601, the voltage of the first output terminal Vout1 cannot exceed the first voltage threshold, and the first access detection module 47 will not trigger the first switch control module 46 to enter the ready state. Simultaneously, to handle the possibility of a short circuit between the first output terminal Vout1 and the second output terminal Vout2, the voltage of the first output terminal Vout1 must exceed the first voltage threshold before the first switch control module 46 will switch to the ready state under the trigger of the second access detection module 71. Therefore, when the condition of the load power supply 601 is poor, the first switch control module 46 cannot switch to the ready state under the trigger of the first access detection module 47 or the second access detection module 71, resulting in the first output terminal Vout1 and the second output terminal Vout2 being unable to provide charging voltage to the load power supply 601.

[0111] In some implementations, combined Figure 8 and Figure 9 As shown, the emergency start circuit 400 also includes a forced start module 73. When manually operated, the forced start module 73 triggers the first switch control module 46 to switch to a ready state. Specifically, the forced start module 73's triggering of the first switch control module 46 is not limited by the condition that the voltage at the first output terminal Vout1 needs to be greater than a first voltage threshold. Therefore, even when the load power supply 601 is in poor condition, the first switch control module 46 can switch to a ready state, allowing the voltage from the start-up power supply 201 to be transmitted to the load power supply 601.

[0112] Specifically, when manually activated, the forced start module 73 generates a forced start signal. This forced start signal triggers the first switch control module 46 to maintain a ready state. After the first switch control module 46 switches to the ready state under the trigger of the forced start module 73, the ready state of the first switch control module 46 continues until the forced start signal disappears. For example, the forced start signal is a low-level signal.

[0113] Optionally, combined Figure 7 and Figure 9As shown, the forced start module 73 can be electrically connected to the first access detection module 47. The forced start signal acts on the first access detection module 47, causing the first access detection module 47 to output a connection confirmation signal, thereby keeping the first switch control module 46 in a ready state.

[0114] Optionally, the forced start module 73 can also be electrically connected to the first switch control module 46.

[0115] In some embodiments, before the first switch control module 46 enters the ready state, if the detected voltage is less than the second voltage threshold, the second access detection module 71 is also used to suppress the triggering of the first switch control module 46 by the forced start module 73. Understandably, if there is a short circuit between the first output terminal Vout1 and the second output terminal Vout2 before the forced start module 73 triggers the first switch control module 46, it may cause the startup power supply 201 to overheat severely or even be damaged. Since the detected voltage decreases as the resistance value between the first output terminal Vout1 and the second output terminal Vout2 decreases, when there is a short circuit between the first output terminal Vout1 and the second output terminal Vout2, the resistance value between the first output terminal Vout1 and the second output terminal Vout2 is less than the internal resistance of the load power supply 601, and therefore the detected voltage will be less than the second voltage threshold. Since the second access detection module 71 suppresses the triggering of the forced start module 73 on the first switch control module 46, the first switch control module 46 cannot enter the ready state, thereby preventing the voltage of the startup power supply 201 from being transmitted between the first output terminal Vout1 and the second output terminal Vout2, thus avoiding severe overheating or damage to the startup power supply 201.

[0116] Specifically, the second access detection module 71 suppressing the triggering of the forced start module 73 can be understood as the second access detection module 71 suppressing the signal output by the forced start module 73 to trigger the first switch control module 46 to enter the ready state, or it can be understood as the second access detection module 71 suppressing the first switch control module 46 from responding to the triggering of the forced start module 73.

[0117] In other embodiments, the second access detection module 71, the first access detection module 47, and the forced start module 73 are respectively connected in parallel between the reference voltage point and the first switch control module 46. By switching between the on and off states through the second access detection module 71, the first access detection module 47, or the forced start module 73, the power supply input of the first switch control module 46 can be controlled, allowing the first switch control module 46 to enter or exit the ready state.

[0118] In some implementations, combined Figure 8 and Figure 10As shown, the emergency start circuit 400 also includes a second switch control module 48 electrically connected to the switch module 41. Upon receiving a connection confirmation signal, the second switch control module 48 begins timing. This can also be understood as the second switch control module 48 starting timing after the connection confirmation signal appears. After timing ends, the emergency start circuit 400 enters a standby state, and the switch module 41 remains in an open state under the trigger of the second switch control module 48. This prevents the circuit between the starting power supply 201 and the load power supply 601 from being continuously connected for an extended period, preventing unnecessary power consumption of the starting power supply 201 and preventing the starting power supply 201 from overheating due to continuous power supply.

[0119] In some implementations, after the access detection module outputs a connection confirmation signal, the second switch control module 48 starts the activation timing. Upon receiving the connection confirmation signal, the switch module 41 remains in the ON state after the activation identification signal appears. Understandably, if the activation identification signal has not been eliminated by the end of the activation timing after its appearance, the switch module 41 switches from the ON state to the OFF state. If the activation timing has not ended by the time the activation identification signal is eliminated, the switch module 41 switches from the ON state to alternately switching between the ON and OFF states, and remains in the OFF state after the activation timing ends.

[0120] Understandably, the time difference between the start of the ignition operation and the start of the timing activation is a random value.

[0121] For example, the second switch control module 48 is electrically connected to the switch module 41.

[0122] In some implementations, the priority order of the switch module 41 in responding to the first switch control module 46, the second switch control module 48, and the stop signal, from high to low, is: stop signal, second switch control module 48, and first switch control module 46.

[0123] Understandably, before the activation timer ends and no stop signal is generated, the switch module 41 is controlled by the first switch control module 46. However, when the activation timer ends or a stop signal is generated, the switch module 41 remains in the off state and is not affected by the first switch control module 46.

[0124] In some implementations, combined Figure 7 and Figure 10As shown, the first access detection module 47 is also electrically connected between the reference voltage point and the second switch control module 48. When the first access detection module 47 is in a conductive state between the reference voltage point and the first switch control module 46, the first access detection module 47 is also in a conductive state between the reference voltage point and the second switch control module 48. After receiving power from the reference voltage point, the second switch control module 48 starts to activate the timing function.

[0125] In some implementations, when the first switch control module 46 switches to the ready state under the trigger of the forced start module 73, the second switch control module 48 starts to enable timing. After the timing ends, the triggering of the first switch control module 46 by the forced start module 73 is suppressed by the second switch control module 48, thus the triggering of the first switch control module 46 by the forced start module 73 also has a time limit, preventing the forced start module 73 from keeping the circuit between the starting power supply 201 and the load power supply 601 connected for a long time.

[0126] For example, combined Figure 8 As shown, after the first output terminal Vout1 and the second output terminal Vout2 are correctly connected to the first electrode and the second electrode of the load power supply 601 respectively, the switch module 41 begins to switch alternately between the on state and the off state. At the same time, the second switch control module 48 begins to activate the timing.

[0127] Subsequently, if the user starts the engine, the voltage at the first output terminal Vout1 will drop significantly. Under the action of the start identification signal, the first switch control module 46 keeps the switch module 41 in the on state. If the ignition operation is completed before the end of the start timer, the start identification signal is cleared after the ignition operation ends, and the switch module 41 resumes alternating between the on and off states. After the start timer ends, the switch module 41 remains in the off state. If the ignition operation is not completed before the end of the start timer, the switch module 41 remains in the off state after the start timer ends.

[0128] After the timing starts, if the user does not start the engine, the voltage drop at the first output terminal Vout1 does not reach the fluctuation threshold, and the start identification signal is not generated. Before the timing ends, the switch module 41 continuously switches between the on and off states.

[0129] Understandably, when the voltage direction of the starting power supply 201 and the voltage direction of the load power supply 601 are in the same direction in the electrical path, it will cause the starting power supply 201 and the load power supply 601 to overheat severely or even be damaged.

[0130] In some implementations, combined Figure 8 and Figure 9As shown, the emergency start circuit 400 also includes a reverse connection protection module 74. The reverse connection protection module 74 is electrically connected between the first output terminal Vout1 and the second output terminal Vout2. When a reverse voltage exists between the first output terminal Vout1 and the second output terminal Vout2, i.e., when the potential of the second output terminal Vout2 is higher than the potential of the first output terminal Vout1, the reverse connection protection module 74 will suppress the triggering effect of the forced start module 73 on the first switch control module 46, thereby preventing the circuit between the starting power supply 201 and the load power supply 601 from being connected. Specifically, the reverse connection protection module 74 can also be understood as being electrically connected between the first output terminal Vout1 and ground.

[0131] For example, the first output terminal Vout1 is designated for connecting to the first electrode of the load power supply 601, and is marked in red. The second output terminal Vout2 is designated for connecting to the second electrode of the load power supply 601, and is marked in black. When the black second output terminal Vout2 is connected to the first electrode of the load power supply 601 and the red first output terminal Vout1 is connected to the second electrode of the load power supply 601, a reverse voltage exists between the first output terminal Vout1 and the second output terminal Vout2 under the voltage of the load power supply 601. Because a reverse voltage exists between the first output terminal Vout1 and the second output terminal Vout2, the reverse connection protection module 74 suppresses the triggering of the forced start module 73 to the first switch control module 46, preventing the first switch control module 46 from triggering the switch module 41 to conduct in the ready state, thus avoiding severe overheating or damage to the start power supply 201 and the load power supply 601.

[0132] Specifically, the reverse connection protection module 74 suppresses the triggering of the forced start module 73, which can be understood as the reverse connection protection module 74 limiting the output of the signal that triggers the first switch control module 46 to enter the ready state by the forced start module 73, or it can be understood as the reverse connection protection module 74 limiting the first switch control module 46 to respond to the triggering of the forced start module 73.

[0133] In some implementations, combined Figure 8 and Figure 12 As shown, the emergency start circuit 400 also includes a voltage detection module 44. The voltage detection module 44 is used to detect abnormal voltage conditions at the front and rear ends of the emergency start circuit 400. Specifically, abnormal voltage conditions include at least one of the following:

[0134] The output voltage of the power supply 201 is lower than the third voltage threshold.

[0135] The output voltage of the power supply 201 is greater than the fourth voltage threshold.

[0136] The voltage of the first electrode of the load power supply 601 is greater than the fifth voltage threshold.

[0137] Understandably, when the voltage at the first input terminal Vin1 is lower than the third voltage threshold, the output voltage of the startup power supply 201 is too low. When the voltage at the first input terminal Vin1 is greater than the fourth voltage threshold, the output voltage of the startup power supply 201 is too high. When the voltage at the first output terminal Vout1 is greater than the fifth voltage threshold, the first electrode voltage of the load power supply 601 is too high.

[0138] For example, the third voltage threshold is 13.5V. The fourth voltage threshold is 17.5V.

[0139] For example, the fifth voltage threshold is 17.5V.

[0140] In some implementations, the voltage detection module 44 is used to output a stop signal in the event of an abnormal voltage condition. Upon receiving the stop signal, the switch module 41 switches to the disconnected state.

[0141] In some embodiments, the voltage detection module 44 is also used to output a voltage abnormality warning signal when the voltage is abnormal. For example, the stop signal and the voltage abnormality warning signal are both in the form of a high level.

[0142] In some implementations, combined Figure 8 and Figure 13 As shown, the emergency start circuit 400 also includes a temperature detection module 45. The voltage detection module 44 is used to detect the temperature near the emergency start circuit 400. Further, the temperature detection module 45 is used to output a stop signal when the actual temperature exceeds a temperature threshold. Upon receiving this stop signal, the switch module 41 switches to the off state.

[0143] In some embodiments, the temperature detection module 45 is also used to output an over-temperature warning signal when the actual temperature exceeds a temperature threshold. Optionally, the over-temperature warning signal is in the form of a high level.

[0144] In some implementations, combined Figure 8 and Figure 14b As shown, the emergency start circuit 400 also includes at least an audible alarm module 42 electrically connected to the voltage detection module 44. The audible alarm module 42 is used to emit an alarm sound upon receiving a stop signal. Users can promptly detect any abnormalities in the emergency start circuit 400 based on the alarm sound.

[0145] In some implementations, combined Figure 8 and Figure 14aAs shown, the emergency start circuit 400 also includes at least a light indicator module 43 electrically connected to the voltage detection module 44. Specifically, when multiple abnormal situations all use the same alarm tone, the user can distinguish different abnormal situations by the difference in the color, brightness, or flashing frequency of the light.

[0146] In some implementations, the light indicator module 43 is also used to emit a voltage abnormality indicator light when a voltage abnormality indicator signal is received.

[0147] In some implementations, the light indicator module 43 is also used to emit an over-temperature warning light when an over-temperature warning signal is received.

[0148] In some implementations, combined Figure 8 and Figure 11 As shown, the emergency start circuit 400 includes an overload detection module 81. A switching module 41 is electrically connected between the electrodes of the starting power supply 201 and the load power supply 601. The overload detection module 81 is electrically connected to the electrodes of the starting power supply 201. The overload detection module 81 detects the voltage between the first and second electrodes of the starting power supply 201, and outputs a stop signal when the voltage between the first electrodes of the starting power supply 201 is lower than a sixth voltage threshold. Upon receiving the stop signal, the switching module 41 switches to the off state.

[0149] In some implementations, the sixth voltage threshold is lower than the third voltage threshold. For example, the sixth voltage threshold is 6.5V.

[0150] Specifically, according to the circuit model of the starting power supply 201, when the resistance of the load power supply 601 or the electrical load 602 is low, the output power of the starting power supply 201 is high, and the voltage of the first electrode of the starting power supply 201 is low. The overload detection module 81 is electrically connected to the first electrode of the starting power supply 201 to detect the voltage of the first electrode of the starting power supply 201. When the overload detection module 81 detects that the voltage of the first electrode of the starting power supply 201 is lower than the sixth voltage threshold, it outputs a stop signal. When the switching module 41 receives the stop signal, it switches to the disconnected state, thereby interrupting the current transfer between the starting power supply 201 and the load power supply 601. By reasonably setting the sixth voltage threshold, severe overheating of the starting power supply 201 and the conductor circuit can be avoided, and damage to the relevant electronic components in the emergency start circuit 400 can be prevented.

[0151] In some implementations, the overload detection module 81 is electrically connected between the first input terminal Vin1 and the second input terminal Vin2. Understandably, the overload detection module 81 is electrically connected to the positive terminal of the starting power supply 201 through the first input terminal Vin1, and the overload detection module 81 is electrically connected to the negative terminal of the starting power supply 201 through the second input terminal Vin2.

[0152] In some implementations, combined Figure 11 and Figure 14a As shown, the light indicator module 43 is electrically connected to the overload detection module 81. The overload detection module 81 is also used to output an overload indication signal when the voltage of the first electrode of the power supply 201 is lower than a sixth voltage threshold. Upon receiving the overload indication signal, the light indicator module 43 emits an overload warning light. Specifically, when multiple abnormal conditions all use the same alarm tone, the user can distinguish that the power supply 201 has an output overload problem by the difference in the color, brightness, or flashing frequency of the light. In some embodiments, the overload indication signal is in the form of a high level.

[0153] In some implementations, the light indicator module 43 can emit a standby indicator light. Specifically, when the emergency start circuit 400 and the two electrodes of the starting power supply 201 are connected, and the voltage of the first electrode of the starting power supply 201 is not lower than the sixth voltage threshold, the light indicator module 43 emits a standby indicator light. When the voltage of the first electrode of the starting power supply 201 is lower than the sixth voltage threshold, the standby indicator light turns off while the overload warning light illuminates, allowing the user to more accurately determine the output overload problem.

[0154] In some implementations, combined Figure 8 and Figure 15 As shown, the emergency start circuit 400 also includes a voltage regulator module 49, which is electrically connected to the electrodes of the starting power supply 201. The voltage regulator module 49 provides operating voltage or reference voltage to at least one of the overload detection module 81, switch module 41, audible alarm module 42, light indicator module 43, voltage detection module 44, temperature detection module 45, first switch control module 46, first access detection module 47, and second switch control module 48. In some embodiments, the voltage regulator module 49 steps down the voltage output from the positive terminal of the starting power supply 201 to output a stable DC voltage.

[0155] In some embodiments, the output of the voltage regulator module 49 is a reference voltage point. In some embodiments, the voltage regulator module 49 can output a reference voltage of a single amplitude. In other embodiments, the voltage regulator module 49 can also output multiple reference voltages of different amplitudes.

[0156] Specifically, the various reference voltages or reference voltage points mentioned in this application may use the same voltage value or different voltage values.

[0157] In other embodiments, an external power supply may be used to provide operating voltage or reference voltage to at least one of the overload detection module 81, switch module 41, first switch control module 46, first access detection module 47, voltage detection module 44, sound alarm module 42, light indicator module 43, temperature detection module 45 and second switch control module 48.

[0158] In some implementations, combined Figure 2a , Figure 2b and Figure 5 As shown, the voltage fluctuation detection module 72 includes a fluctuation detection unit 721 and an access coupling unit 722 electrically connected to the fluctuation detection unit 721. The fluctuation detection unit 721 is electrically connected to at least one of the first input terminal Vin1 and the first output terminal Vout1. When the detected potential fluctuation reaches the fluctuation threshold, the fluctuation detection unit 721 outputs an ignition detection signal to the access coupling unit 722. Provided that the first output terminal Vout1 and the second output terminal Vout2 are correctly connected to the load power supply 601 and the operating conditions are met, upon receiving the ignition detection signal, the access coupling unit 722 triggers the switch module 41 to remain in the on state.

[0159] Optionally, the access coupling unit 722 is electrically connected to the first switch control module 46. For example, upon receiving an ignition detection signal and a connection confirmation signal, the access coupling unit 722 outputs a start identification signal to the first switch control module 46, which then controls the switch module 41 to remain in the on state.

[0160] Understandably, the access coupling unit 722 is electrically connected to the access detection module. Further, the access coupling unit 722 is electrically connected to at least one of the second access detection module 71 and the first access detection module 47 to receive a connection confirmation signal.

[0161] In some other embodiments, the fluctuation detection unit 721 may output a start identification signal to the first switch control module 46.

[0162] Understandably, the fluctuation detection unit 721 has voltage memory. A memory voltage is formed internally within the fluctuation detection unit 721. The voltage at the first input terminal Vin1 or the first output terminal Vout1 serves as the real-time voltage. The memory voltage exhibits a trend similar to that of the real-time voltage, but the change in the memory voltage lags behind the real-time voltage in time.

[0163] Understandably, the real-time voltage remains stable when no ignition operation occurs.

[0164] Optionally, under steady-state conditions, the memory voltage is approximately equal to the real-time voltage.

[0165] For example, the fluctuation detection unit 721 obtains the real-time voltage from the first input terminal Vin1. When the switching module 41 is continuously in the off state, the real-time voltage is approximately equal to the open-circuit voltage of the starting power supply 201. When the switching module 41 is in the on state, the change in the real-time voltage can reflect the potential fluctuation caused by the ignition operation.

[0166] For example, the fluctuation detection unit 721 obtains the real-time voltage from the first output terminal Vout1. When the switching module 41 is continuously in the off state and no ignition operation occurs, the real-time voltage is approximately equal to the open-circuit voltage of the load power supply 601. The change in real-time voltage can directly reflect the potential fluctuation caused by the ignition operation.

[0167] Understandably, when the switch module 41 is in the disconnected state, no electrical path is formed between the starting power supply 201 and the load power supply 601. At this time, the voltage between the first electrode and the second electrode of the starting power supply 201 is the open circuit voltage.

[0168] For example, under steady-state conditions, the memory voltage and real-time voltage are approximately equal to the charging voltage of the load power supply 601. Understandably, when the switch module 41 is in the ON state, an electrical path is formed between the start-up power supply 201 and the load power supply 601, and the first input terminal Vin1 and the first output terminal Vout1 are at the same potential. In the absence of vehicle ignition operation, the voltage of the first electrode of the load power supply 601 is the charging voltage.

[0169] For example, in a steady state, there is a small difference between the memory voltage and the real-time voltage, which is less than the fluctuation threshold.

[0170] Understandably, during ignition, the real-time voltage initially fluctuates significantly due to the electrical load 602. This causes the difference between the memory voltage and the real-time voltage to exceed the fluctuation threshold, prompting the fluctuation detection unit 721 to output an ignition detection signal. Understandably, as long as the difference between the memory voltage and the real-time voltage remains greater than the fluctuation threshold until the ignition operation ends, the ignition detection signal can continue until the ignition operation concludes.

[0171] Understandably, when the real-time voltage shows a certain downward trend relative to the open-circuit voltage of the starting power supply 201 or the charging voltage of the load power supply 601 within a predetermined time, the fluctuation detection unit 721 outputs an ignition detection signal to the connection coupling unit 722, which ultimately causes the voltage fluctuation detection module 72 to output a start-up identification signal.

[0172] For example, during the detection period, when an ignition operation occurs, the voltage fluctuation detection module 72 outputs a start-up identification signal. After the start-up identification signal appears, the first switch control module 46 changes from triggering the switch module 41 to alternate between the off state and the on state, to keeping the switch module 41 in the on state.

[0173] For example, after the car ignition operation is completed, the real-time voltage rises to near the voltage of the starting power supply 201 or the charging voltage of the load power supply 601. At this time, the real-time voltage is equal to the memory voltage. Alternatively, the real-time voltage may initially be greater than the memory voltage, and then the memory voltage may rise to be equal to the real-time voltage. The voltage fluctuation detection module 72 stops outputting the start-up identification signal. If the first output terminal Vout1 and the second output terminal Vout2 are still in normal conductive contact with the load power supply 601 at this time, the first switch control module 46 resumes alternating timing between the power-on period and the detection period to continuously detect whether the first output terminal Vout1 and the second output terminal Vout2 are correctly connected to the load power supply 601.

[0174] In other embodiments, if the switching module 41 can be turned on prematurely due to the influence of the voltage of the power supply 201 and the voltage fluctuation detection module 72 by means of appropriate technical means, the connection coupling unit 722 can be omitted, and the fluctuation detection unit 721 can directly output the start identification signal.

[0175] In some implementations, combined Figure 2a and Figure 2b As shown, the fluctuation detection unit 721 includes a switch Q11, a diode D4, a capacitor C23, and a fluctuation current limiting branch. One end of the fluctuation current limiting branch is electrically connected to the control terminal of the switch Q11, and the other end is electrically connected to the first input terminal or the first output terminal.

[0176] In some implementations, the voltage fluctuation detection module 72 is electrically connected to the first input terminal Vin1, but not directly to the first output terminal Vout1. Understandably, the voltage fluctuation detection module 72 can obtain the real-time voltage when the switch module 41 is in the ON state.

[0177] For example, combined Figure 2aAs shown, the anode of diode D4 is electrically connected to the first input terminal Vin1. Capacitor C23 is electrically connected between the cathode of diode D4 and ground. The cathode of diode D4 is also electrically connected to one current-carrying terminal of switch Q11. The fluctuation current-limiting branch is electrically connected between the control terminal of switch Q11 and the first input terminal Vin1. The other current-carrying terminal of switch Q11 is used to output an ignition detection signal to the connection coupling unit 722. Understandably, when the first input terminal Vin1 is electrically connected to the first electrode of the starting power supply 201, the starting power supply 201 applies a voltage to capacitor C23 through diode D4, causing the voltage of capacitor C23 to gradually rise to a level close to the voltage of the first electrode of the starting power supply 201.

[0178] Understandably, during an ignition operation, the voltage of the first electrode of the starting power supply 201 is pulled low by the electrical load 602. Since the fluctuation current-limiting branch is electrically connected between the control terminal of switch Q11 and the first input terminal Vin1, and capacitor C23 has a voltage clamping effect, the voltage at the control terminal of switch Q11 is lower than the voltage of capacitor C23. This causes conduction between the two current-carrying terminals of switch Q11, and the other output of switch Q11 is an ignition detection signal, which is in the form of a high-level signal.

[0179] Understandably, the device fluctuation current limiting branch that is connected between the two current-carrying terminals of the switch Q11 can also play a current limiting role, preventing damage to the switch Q11.

[0180] Understandably, the voltage of capacitor C23 serves as a memory voltage, reflecting the voltage level of the first electrode of the starting power supply 201 before the ignition operation.

[0181] Understandably, since the anode of diode D4 is connected to the first input terminal Vin1, there is no need for the switching module 41 to switch to the on state. The first electrode of the power supply 201 can directly charge capacitor C23, causing the voltage of capacitor C23 to rise.

[0182] For example, the magnitude of the fluctuation threshold corresponds to the lowest positive bias voltage between one current-carrying terminal and the control terminal of the switch Q11.

[0183] In some implementations, the voltage fluctuation detection module 72 is electrically connected to the first output terminal Vout1, but not directly to the first input terminal Vin1, for the first input terminal Vin1 and the first output terminal Vout1. Understandably, after the switch module 41 switches to the ON state, the voltage fluctuation detection module 72 obtains the real-time voltage corresponding to the charging voltage of the load power supply 601.

[0184] For example, combined Figure 2bAs shown, the anode of diode D4 can also be connected to the first output terminal Vout1. The fluctuation current limiting branch is connected between the control terminal of switch Q11 and the first output terminal Vout1. Understandably, when switch module 41 is switched to the on state and no ignition operation occurs, the starting power supply 201 applies voltage to capacitor C23 through the first output terminal Vout1 and diode D4, causing the voltage of capacitor C23 to rise. If an ignition operation occurs, the voltage of the first output terminal Vout1 is pulled low by electrical load 602, the two current-carrying terminals of switch Q11 are connected, and the other output of switch Q11 is an ignition detection signal.

[0185] In some embodiments, the voltage fluctuation detection module 72 is electrically connected to the first output terminal Vout1 and the first input terminal Vin1, respectively. Understandably, when the first output terminal Vout1 and the second output terminal Vout2 are correctly connected to the first electrode and the second electrode of the load power supply 601, respectively, before the switch module 41 switches to the on state, the voltage fluctuation detection module 72 obtains a memory voltage from the first output terminal Vout1. This memory voltage corresponds to the open-circuit voltage of the startup power supply 201, and the real-time voltage is obtained from the first output terminal Vout1. Understandably, even when the switch module 41 is in the off state, the voltage fluctuation detection module 72 can generate a startup identification signal based on the potential fluctuation of the first output terminal Vout1.

[0186] For example, combined Figure 5 As shown, the anode of diode D4 can also be connected to the first input terminal Vin1, and the fluctuation current-limiting branch can be connected between the control terminal of switch Q11 and the first output terminal Vout1 to reduce dependence on the conduction state of switch module 41. Understandably, in the absence of ignition operation, the starting power supply 201 directly applies voltage to capacitor C23 through the first input terminal Vin1. During ignition operation, the first output terminal Vout1 directly transmits a low voltage to the control terminal of switch Q11.

[0187] In some implementations, the fluctuation current-limiting branch includes a resistor R87, one end of which is electrically connected to the control terminal of the switch Q11, and the other end is electrically connected to either the first input terminal Vin1 or the first output terminal Vout1. Resistor R87 serves to limit the current and prevent damage to the switch Q11.

[0188] In some implementations, combined Figure 2a and Figure 2bAs shown, the fluctuation current-limiting branch includes resistor R87 and diode D6. Diode D6 is connected in series with resistor R87. The unidirectional conduction direction of diode D6 corresponds to the current outflow direction from the control terminal of switch Q11. Understandably, when the voltage at the first output terminal Vout1 is higher than the voltage at capacitor C23, diode D6 can prevent reverse breakdown between one current-carrying terminal and the control terminal of switch Q11, thus avoiding damage to switch Q11.

[0189] Optionally, combined Figure 2a As shown, diode D6 and resistor R87 are connected in series between the control terminal of switch Q11 and the first input terminal Vin1.

[0190] Optionally, combined Figure 2b As shown, diode D6 and resistor R87 are connected in series between the control terminal of switch Q11 and the first output terminal Vout1.

[0191] In some implementations, combined Figure 2a and Figure 2b As shown, the fluctuation detection unit 721 also includes a resistor R15, which is electrically connected between the other current-carrying terminal of the switch Q11 and the connection coupling unit 722. Understandably, when the two current-carrying terminals of the switch Q11 are conducting, the resistor R15 acts as a current limiter between the capacitor C23 and the connection coupling unit 722, preventing damage to the switch Q11 or the connection coupling unit 722 due to excessive current. It also prolongs the discharge time of the capacitor C23, ensuring a continuous output of the ignition detection signal during ignition operation.

[0192] In some implementations, combined Figure 5 As shown, the connection coupling unit 722 includes switches Q9, Q14, Q23, resistor R7, and a first voltage divider branch. One current-carrying terminal of switch Q9 is used to receive a connection confirmation signal. Resistor R7 is electrically connected between one current-carrying terminal of switch Q9 and the control terminal of switch Q9. One current-carrying terminal of switch Q14 is electrically connected to the control terminal of switch Q9, and the other current-carrying terminal is grounded. The control terminal of switch Q14 is used to receive an ignition detection signal. The first voltage divider branch is electrically connected between the other current-carrying terminal of switch Q9 and ground. The intermediate node of the first voltage divider branch is electrically connected to the control terminal of switch Q23. One current-carrying terminal of switch Q23 is used to trigger switch module 41 to remain in the on state, and the other current-carrying terminal is grounded.

[0193] Understandably, when the connection confirmation signal is high, and switch Q9 receives the connection confirmation signal, and switch Q14 is activated between its two current-carrying terminals under the trigger of the ignition detection signal, the voltage at the control terminal of switch Q9 is lower than the voltage at one current-carrying terminal of switch Q9, thus activating the connection between the two current-carrying terminals of switch Q9. The intermediate node of the first voltage divider branch provides a bias voltage to the control terminal of switch Q23, activating the connection between the two current-carrying terminals of switch Q23, thereby outputting a low-level start-up identification signal.

[0194] For example, one current-carrying terminal of the switch Q23 is used to output a start-up identification signal to the first switch control module 46, and the start-up identification signal is in the form of a low level.

[0195] For example, one current-carrying terminal of the switch Q9 is electrically connected to at least one of the second access detection module 71 and the first access detection module 47 to receive a connection confirmation signal.

[0196] In some implementations, combined Figure 6 As shown, the switch module 41 includes a switch element K1 and a switch drive unit 411 electrically connected to the control terminal of the switch element K1. Optionally, the switch element K1 is electrically connected between the first input terminal Vin1 and the first output terminal Vout1. Optionally, the switch element K1 is electrically connected between the second input terminal Vin2 and the second output terminal Vout2. The first switch control module 46 or the voltage detection module 44 controls the on / off switching of the switch element K1 through the switch drive unit 411. Specifically, the output terminal of the switch drive unit 411 is electrically connected to the control terminal of the switch element K1.

[0197] For example, the overload detection module 81 controls the switching of the switch K1 through the switch drive unit 411.

[0198] Specifically, the switch K1 can be a relay, a MOSFET, or other devices that can implement a switching function. For example, one of the normally open contacts of the switch K1 is electrically connected to the first input terminal Vin1, and the other is electrically connected to the first output terminal Vout1. Understandably, when on, the switch K1 can be considered a conductor with extremely low resistance; therefore, the first electrode of the power supply 201 can be directly electrically connected to the first output terminal Vout1. Understandably, when the switch K1 is on, the real-time voltage corresponds to the voltage at any point between the first input terminal Vin1 and the first output terminal Vout1. Therefore, the voltage fluctuation detection module 72 detects the voltage change at a certain point in the circuit, rather than the voltage difference across the switch K1.

[0199] For example, combined Figure 4 and Figure 5As shown, when the first output terminal Vout1 and the second output terminal Vout2 are correctly connected to the load power supply 601 and the switch K1 is turned on, the voltage fluctuation detection module 72 will detect a voltage value of 14V, which is the output voltage of the power supply 201.

[0200] If the user does not start the engine, the voltage value will remain unchanged, and the voltage fluctuation detection module 72 will not send a start identification signal to the first switch control module 46. The switch K1 will alternately turn on and off. For example, the switch K1 may turn on for 5 seconds, then turn off for 20 milliseconds, then turn on again for 5 seconds, and so on.

[0201] If the user starts the engine during this period, the current in the circuit will increase significantly, and the voltage value detected by the voltage fluctuation detection module 72 at switch K1 may drop to 13 volts. Due to the voltage change, the voltage fluctuation detection module 72 will send a start identification signal to the first switch control module 46. The first switch control module 46 will trigger the switch drive unit 411 according to the start identification signal. The switch drive unit 411 will keep switch K1 in the open state until the detected voltage value rises or remains unchanged.

[0202] Specifically, in combination Figure 6 As shown, one end of the coil of switch K1 is electrically connected to the first input terminal Vin1, and the other end is electrically connected to the switch drive unit 411. More specifically, when the switch drive unit 411 inputs a low potential to the other end of the coil of switch K1, current flows through the coil of switch K1, the pair of normally open contacts of switch K1 closes, and the switch module 41 is in the conducting state, forming an electrical path between the electrodes of the starting power supply 201 and the electrodes of the load power supply 601. When a high potential is input to the other end of the coil of switch K1, no current flows through the coil of switch K1, the pair of normally open contacts of switch K1 separate, and the switch module 41 is in the disconnected state.

[0203] In some embodiments, a diode D3 is electrically connected between the two ends of the coil of the switching element K1. The cathode of the diode D3 is electrically connected to the positive terminal of the starting power supply 201, and the anode of the diode D3 is electrically connected to the switch driving unit 411, thereby releasing the reverse electromotive force of the coil through the diode D3.

[0204] In some embodiments, the switch driving unit 411 is provided with a timing control terminal, the level of which is divided into an active level and a deactivation level. When the timing control terminal is at an active level, the switch driving unit 411 controls the switch K1 to turn on; when the timing control terminal is at a deactivation level, the switch driving unit 411 controls the switch K1 to turn off. Optionally, the active level is high and the deactivation level is low. Optionally, the active level is low and the deactivation level is high.

[0205] Specifically, the voltage level of the aging control terminal is controlled at least by the first switch control module 46. More specifically, the output of the first switch control module 46 is electrically connected to the aging control terminal. In some embodiments, in the ready state, the first switch control module 46 outputs a valid voltage level to the aging control terminal during the power-on period and an invalid voltage level to the aging control terminal during the detection period.

[0206] Furthermore, the level state of the aging control terminal is also controlled by the output of the second switch control module 48. More specifically, the level state of the aging control terminal is simultaneously controlled by both the first switch control module 46 and the second switch control module 48, and either the first switch control module 46 or the second switch control module 48 can lock the aging control terminal at the failure level. Understandably, when the aging control terminal is not short-circuited to the reference voltage point, and the failure level is low, when either the first switch control module 46 or the second switch control module 48 outputs a low level, the aging control terminal can be clamped at the failure level.

[0207] Specifically, the output of the second switch control module 48 is electrically connected to the aging control terminal. Before the start-up timing ends, the second switch control module 48 outputs a high level to the aging control terminal. After the start-up timing ends, the second switch control module 48 outputs a low level to the aging control terminal, thereby ensuring that the first input terminal Vin1 and the first output terminal Vout1 are disconnected after the start-up timing ends.

[0208] In some implementations, combined Figure 6 As shown, the switch drive unit 411 also has a stop control terminal for receiving a stop signal. Specifically, in the absence of a stop signal, before the start-up timing ends, during the power-on period, the first switch control module 46 outputs a valid level to the aging control terminal, enabling the first electrode of the startup power supply 201 to transmit current to the first output terminal Vout1. During the detection period, the first switch control module 46 outputs a failure level to the aging control terminal, causing the first output terminal Vout1 to be disconnected from the first electrode of the startup power supply 201, thereby allowing it to determine whether the first output terminal Vout1 or the second output terminal Vout2 is disconnected from the electrode of the load power supply 601.

[0209] Understandably, in the absence of a stop signal, when the time control terminal is at an active level, the switch drive unit 411 controls the switch K1 to turn on; when the time control terminal is at an inactive level, the switch drive unit 411 controls the switch K1 to turn off. Upon receiving a stop signal, regardless of whether the first switch control module 46 is in a ready state, the switch drive unit 411 controls the switch K1 to turn off, thereby promptly stopping the current transfer between the starting power supply 201 and the load power supply 601, and preventing damage to the starting power supply 201, the emergency start circuit 400, or the load power supply 601.

[0210] In some implementations, combined Figure 6 As shown, the switch drive unit 411 includes a switch Q6 and a resistor R12. One current-carrying terminal of switch Q6 is electrically connected to the control terminal of switch K1, and the other current-carrying terminal of switch Q6 is grounded. Resistor R12 is electrically connected between the control terminal of switch Q6 and ground. Specifically, the control terminal of switch Q6 serves as a timing control terminal and is electrically connected to the first switch control module 46. More specifically, during the energizing period, an effective voltage level acts on the control terminal of switch Q6, causing switch Q6 to conduct. A potential difference exists across the coil of switch K1, thereby attracting the normally open contact of switch K1. During the detection period, a failure voltage level acts on the control terminal of switch Q6, causing switch Q6 to turn off. There is no potential difference across the coil of switch K1, and the normally open contact of switch K1 separates.

[0211] In some embodiments, when the switch module 41 is simultaneously controlled by the first switch control module 46 and the second switch control module 48, the control terminal of the switch element Q6 is electrically connected to the first switch control module 46 and the second switch control module 48 respectively.

[0212] In some implementations, combined Figure 6 As shown, the switch drive unit 411 also includes a switch Q7 and a resistor R11. The control terminal of the switch Q6 is electrically connected to one current-carrying terminal of the switch Q7. The other current-carrying terminal of the switch Q7 is grounded, and the resistor R11 is electrically connected between the control terminal of the switch Q7 and the output terminal of the voltage detection module 44. Specifically, the resistor R11 is used to electrically connect to one end of the voltage detection module 44 as a stop control terminal. Alternatively, the stop control terminal can also be electrically connected to the output terminal of the temperature detection module 45.

[0213] Optionally, resistor R11 is electrically connected between the control terminal of switch Q7 and overload detection module 81.

[0214] Specifically, when the stop signal is high, switch Q7 is turned on under the control of the stop signal. The control terminal of switch Q6 is clamped to a low potential, switch Q6 is in the off state, and switch K1 is in the open state.

[0215] In some other embodiments, when the switch module 41 is controlled only by the overload detection module 81, the control terminal of the switch Q6 can be electrically connected to a high potential via a pull-up resistor.

[0216] In some implementations, combined Figure 6 As shown, the switch module 41 also includes a resistor R70. Resistor R70 is electrically connected between the first output terminal Vout1 and the second output terminal Vout2. Specifically, resistor R70 is electrically connected between the other of the pair of normally open contacts of the switch element K1 and ground.

[0217] In some implementations, combined Figure 4 and Figure 5 As shown, the first switch control module 46 includes a timing management chip U4. The timing management chip U4 has a first level locking terminal, a second level locking terminal, and an output terminal. The first level locking terminal and the second level locking terminal are electrically connected to the voltage fluctuation detection module 72 to obtain triggering excitation from the voltage fluctuation detection module 72. When triggered by the voltage fluctuation detection module 72, the output terminal continuously outputs a valid level to the switch module 41, which triggers the switch module 41 to switch to the ON state. Understandably, when the first level locking terminal and the second level locking terminal are not triggered by the voltage fluctuation detection module 72, the output terminal of the timing management chip U4 alternately outputs a valid level and a deactivated level to the switch module 41. The valid level is used to trigger the switch module 41 to switch to the ON state, and the deactivated level is used to trigger the switch module 41 to switch to the OFF state. When the first level locking terminal is triggered by the voltage fluctuation detection module 72, the output terminal continuously outputs a valid level to the switch module 41, thereby keeping the switch module 41 continuously in the ON state during ignition operation.

[0218] Understandably, by adjusting the output of the first switch control module 46, the switch module 41 is kept in the on state, which avoids the need for the switch module 41 to make different corresponding priorities to the first switch control module 46 and the voltage fluctuation detection module 72, and helps to simplify the control logic or circuit structure of the switch module 41.

[0219] For example, the timing management chip U2 uses an NE555 timing chip. When the timing management chip U2 is powered, the output terminal will output an active level when the voltage of the first level lock terminal is lower than a certain voltage. When the voltage of the second level lock terminal is higher than a specified voltage, the output terminal will output an inactive level. When the voltage of the first level lock terminal is not lower than a certain voltage and the voltage of the second level lock terminal is not higher than a specified voltage, the output terminal alternately outputs active and inactive levels to the switch module 41.

[0220] In some implementations, combined Figure 5 As shown, the first switch control module 46 also includes a resistor R27, a capacitor C17, and a diode D19. The timing management chip U4 has a fourth terminal, a seventh terminal, and an eighth terminal. The eighth terminal of the timing management chip U4 is used to receive a connection confirmation signal and is electrically connected to the fourth terminal. Resistor R27 is electrically connected between the fourth and seventh terminals of the timing management chip U4. The anode of diode D19 is electrically connected to the seventh terminal of the timing management chip U4. The first level lock terminal of the timing management chip U4 is electrically connected to the voltage fluctuation detection module 72 and is used to receive a start identification signal. The first level lock terminal of the timing management chip U4 is also electrically connected to the second level lock terminal and the cathode of diode D19. Capacitor C17 is electrically connected between the first level lock terminal of the timing management chip U4 and ground.

[0221] Understandably, when the eighth terminal of the timing management chip U4 receives a connection confirmation signal, the timing management chip U4 obtains power from the connection confirmation signal, which is in the form of a high-level signal. Subsequently, if the first level lock terminal of the timing management chip U4 does not receive a start identification signal, the timing management chip U4 alternately counts the power-on period and the detection period in time, and triggers the switch module 41 to switch to the on state during the power-on period.

[0222] Understandably, when the eighth terminal of the timing management chip U4 receives a connection confirmation signal and the first level lock terminal receives a start identification signal, the timing management chip U4 trigger switch module 41 remains in the on state.

[0223] In some implementations, combined Figure 5 As shown, the first switch control module 46 also includes resistors R16, R41, and R61, capacitors C8 and C16, diode D10, and diode D20. Specifically, the timing management chip U4 also has a first terminal, an output terminal, and a fifth terminal. In some embodiments, the timing management chip U4 is an NE555 timing chip.

[0224] In some implementations, when the voltage at the first output terminal Vout1 is greater than the first voltage threshold, the first access detection module 47 is in a conducting state between the reference voltage point and the timing management chip U4, and uses the reference voltage to power the timing management chip U4, so that the timing management chip U4 starts running.

[0225] In some implementations, when the voltage at the first output terminal Vout1 is greater than the first voltage threshold, the first access detection module 47 outputs a connection confirmation signal to the fourth terminal of the timing management chip U4.

[0226] Specifically, the first terminal of the timing management chip U4 is grounded. Capacitor C8 is electrically connected between the fifth terminal of the timing management chip U4 and ground. The anode of diode D20 is electrically connected to the first level-locking terminal. Resistor R16 is electrically connected between the cathode of diode D20 and the seventh terminal. Resistor R61 and capacitor C16 are connected in parallel between the fourth terminal and ground. The fourth terminal is electrically connected to the first access detection module 47. Resistor R41 is electrically connected between the output terminal and the switch module 41. The cathode of diode D10 is electrically connected to the output terminal, and the anode of diode D10 is electrically connected to the switch module 41.

[0227] More specifically, resistor R41 is electrically connected between the output terminal and the timing control terminal of the switch drive unit 411. The cathode of diode D10 is electrically connected to the output terminal, and the anode of diode D10 is electrically connected to the timing control terminal of the switch drive unit 411. During startup, the output terminal of the timing management chip U4, through resistor R41 and diode D10, switches the timing control terminal of the switch drive unit 411 between an active level and an inactive level.

[0228] For example, the eighth terminal is used to supply power to the internal circuitry of the timing management chip U4. The seventh terminal is used to discharge capacitors in the internal circuitry. The fifth terminal is used to control the threshold voltage in the internal circuitry. The fourth terminal is used to reset the timing management chip U4 by grounding. The internal circuitry of the timing management chip U4 is grounded through the first terminal.

[0229] In some other embodiments, the first access detection module 47 can also be used to output a short pulse signal that can wake up the timing management chip U4.

[0230] In some other embodiments, when the voltage at the first output terminal Vout1 is greater than the first voltage threshold, the first access detection module 47 outputs a connection confirmation signal to the first switch control module 46, and the signal form of the connection confirmation signal is low level.

[0231] In some implementations, combined Figure 4 and Figure 7 As shown, one input terminal of the first access detection module 47 is electrically connected to the first output terminal Vout1. The first output terminal Vout1 is used to electrically connect to the first electrode of the load power supply 601.

[0232] For example, the output of the first access detection module 47 is used to output a connection confirmation signal to the first switch control module 46 and the second switch control module 48. Optionally, the first access detection module 47 is also electrically connected to a reference voltage point.

[0233] In some implementations, combined Figure 7As shown, the first access detection module 47 includes a switch Q16 and an access drive unit 471. The switch Q16 is electrically connected between a reference voltage point and the first switch control module 46. The access drive unit 471 is electrically connected to the control terminal of the switch Q16, and is also electrically connected between the first output terminal Vout1 and the second output terminal Vout2. When the voltage at the first output terminal Vout1 is greater than a first voltage threshold, the access drive unit 471 triggers the switch Q16 to conduct, thereby making the first access detection module 47 conduct between the reference voltage point and the first switch control module 46, and the first switch control module 46 receives power and remains in a ready state.

[0234] Specifically, the voltage at the first output terminal Vout1 is transferred to the drive unit 471 via the access drive unit 471. One current-carrying terminal of the switch Q16 is electrically connected to the reference voltage point, and the other current-carrying terminal is electrically connected to the first switch control module 46. Specifically, in conjunction with Figure 7 As shown, the first access detection module 47 also includes a resistor R42, which is electrically connected between the reference voltage point and the control terminal of the switch Q16, thereby eliminating the bias voltage at the control terminal of the switch Q16 when the access drive unit 471 does not generate a triggering action.

[0235] Furthermore, combined Figure 7 and Figure 9 As shown, the control terminal of switch Q16 is also electrically connected to the forced start module 73. When manually operated, the forced start module 73 turns on switch Q16, thereby triggering the first switch control module 46 to switch to the ready state.

[0236] In some implementations, combined Figure 7 As shown, the access drive unit 471 includes a second voltage divider branch and a switch Q10. The second voltage divider branch is used to electrically connect the first output terminal Vout1 and the second output terminal Vout2. The intermediate node of the second voltage divider branch is electrically connected to the control terminal of the switch Q10. One current-carrying terminal of the switch Q10 is electrically connected to the control terminal of the switch Q16, and the other current-carrying terminal is grounded. Specifically, when the first output terminal Vout1 and the second output terminal Vout2 are electrically connected to the first electrode and the second electrode of the load power supply 601, respectively, the control terminal of the switch Q10 is electrically connected to the intermediate node of the second voltage divider branch. The second voltage divider branch reduces the voltage of the load power supply 601, so that the voltage of the first output terminal Vout1 is reduced by a certain ratio before being transmitted to the control terminal of the switch Q16. Thus, when the first output terminal Vout1 and the second output terminal Vout2 are in normal contact with the electrodes of the load power supply 601, the switch Q10 is in a conducting state and transmits a low level to the control terminal of the switch Q16, triggering the switch Q16 to conduct.

[0237] Specifically, in combination Figure 7 As shown, the second voltage divider branch includes resistors R49 and R51 connected in series between the first output terminal Vout1 and the second output terminal Vout2. The connection node between resistors R49 and R51 is electrically connected to the control terminal of the switch Q10.

[0238] In some implementations, combined Figure 7 As shown, the first access detection module 47 also includes a short-circuit protection unit 472. The other current-carrying terminal of the switch Q16 is electrically connected to the first switch control module 46 and the short-circuit protection unit 472. When the voltage at the first output terminal Vout1 is greater than a first voltage threshold, the access drive unit 471 triggers the switch Q16 to conduct. The conduction trigger signal for the switch Q16 by the access drive unit 471 is eliminated after the window period when the voltage at the first output terminal Vout1 drops below the first voltage threshold. The short-circuit protection unit 472 is electrically connected to the second access detection module 71 and the control terminal of the switch Q16. When the switch Q16 is in the conducting state and the short-circuit protection unit 472 is triggered by the second access detection module 71, the short-circuit protection unit 472 triggers the switch Q16 to remain in the conducting state. Specifically, before the first output terminal Vout1 and the second output terminal Vout2 are normally connected to the first and second electrodes of the load power supply 601, respectively, to prevent a short circuit between the first output terminal Vout1 and the second output terminal Vout2, the second access detection module 71 triggers the first switch control module 46 through the short-circuit protection unit 472. Before the voltage of the first output terminal Vout1 exceeds the first voltage threshold, the short-circuit protection unit 472 will not trigger the switch Q16 to conduct under the action of the second access detection module 71. This prevents the voltage of the starting power supply 201 from being directly applied between the first output terminal Vout1 and the second output terminal Vout2 in the event of a short circuit, thus avoiding a short circuit. After the voltage of the first output terminal Vout1 exceeds the first voltage threshold and drops below the first voltage threshold, the trigger signal for the switch Q16 to conduct is eliminated after the window period, so the switch Q16 remains in the conducting state during the window period. When the second access detection module 71 triggers the first switch control module 46 to maintain the ready state during the window period, the short-circuit protection unit 472 triggers the switch Q16 to maintain the on state during and after the window period until the triggering effect of the second access detection module 71 disappears.

[0239] Specifically, during the window period, when the resistive access signal is transmitted to the short-circuit protection unit 472, the short-circuit protection unit 472 triggers the switch Q16 to remain in the on state.

[0240] In some implementations, combined Figure 7 As shown, the access drive unit 471 also includes a delay branch, which is electrically connected between the control terminal of switch Q10 and ground, thereby reducing the voltage change rate of the control terminal of switch Q16. Specifically, when the first output terminal Vout1 and the second output terminal Vout2 are in normal contact with the electrodes of the load power supply 601, but later at least one of the first output terminal Vout1 and the second output terminal Vout2 is separated from the electrodes of the load power supply 601, due to the delay effect of the delay branch, the voltage of the control terminal of switch Q10 is lower than the minimum trigger voltage of the control terminal of switch Q10 only after the window period. Therefore, switch Q10 remains on during the window period after the voltage of the first output terminal Vout1 drops below the first voltage threshold. During the window period, switch Q10 outputs a low-level on-trigger signal to switch Q16, so the on-trigger signal of switch Q16 issued by access drive unit 471 is eliminated only after the window period.

[0241] Specifically, the time-delay branch includes capacitor C19, which is electrically connected between the control terminal of switch Q10 and ground.

[0242] In some implementations, combined Figure 7 As shown, the short-circuit protection unit 472 includes a switch Q12, a switch Q17, a first current-limiting branch, and a third voltage-dividing branch. The third voltage-dividing branch is electrically connected between the output terminal of the second access detection module 71 and ground. The intermediate node of the third voltage-dividing branch is electrically connected to the control terminal of switch Q17. The first current-limiting branch is electrically connected between one current-carrying terminal of switch Q17 and the other current-carrying terminal of switch Q16. One current-carrying terminal of switch Q17 is also electrically connected to the control terminal of switch Q12. The other current-carrying terminal of switch Q17 is grounded. One current-carrying terminal of switch Q12 is electrically connected to the control terminal of switch Q16, and the other current-carrying terminal is grounded. Specifically, the resistive access signal is in the form of a low level. When the resistive access signal is applied to the third voltage-dividing branch, the intermediate node of the third voltage-dividing branch applies a low level to the control terminal of switch Q17, keeping switch Q17 off. When switch Q17 is off, the control terminal of switch Q12 is isolated from ground. When switch Q16 is within the window period, the reference voltage is transmitted to the control terminal of switch Q12, causing switch Q12 to conduct. When switch Q12 remains on, switch Q16 can continue to conduct without being limited by the window period until the resistive input signal disappears.

[0243] Furthermore, when the detection voltage rises to a level not less than the second voltage threshold, causing the resistive access signal to disappear, the second access detection module 71 applies a high level to one end of the third voltage divider branch, and the control terminal of switch Q12 is clamped to a low level by switch Q17, causing switch Q12 to return to cutoff. However, since the voltage at the first output terminal Vout1 rises accordingly to a level greater than the first voltage threshold, the access drive unit 471 resumes triggering switch Q16, thus enabling switch Q16 to remain on, allowing the first switch control module 46 to continue to remain in the ready state.

[0244] Specifically, in combination Figure 7 As shown, the first current-limiting branch includes resistor R52, which is electrically connected between one current-carrying terminal of switch Q17 and the other current-carrying terminal of switch Q16. The third voltage-dividing branch includes resistors R53 and R55, which are connected in series between the output terminal of the second access detection module 71 and ground. The connection node between resistors R53 and R55 is electrically connected to the control terminal of switch Q17.

[0245] In some other implementations, for the time point when the voltage of the first output terminal Vout1 drops to equal the first voltage threshold, the connection confirmation signal disappears after the window period relative to that time point through the action of the delay branch.

[0246] Furthermore, the first access detection module 47 can also simultaneously output connection confirmation signals to both the first switch control module 46 and the second switch control module 48. In this embodiment, the connection confirmation signal is a high-level signal. In other embodiments, the connection confirmation signal can also be a low-level signal.

[0247] In some implementations, combined Figure 7As shown, the second access detection module 71 includes a first resistive branch, a second resistive branch, and a first judgment unit 711. The first resistive branch is electrically connected between the first output terminal Vout1 and the second output terminal Vout2. The second resistive branch is connected in series with the first resistive branch between the reference voltage point and ground. The connection node between the first and second resistive branches is electrically connected to the first judgment unit 711 and used to output the detection voltage. When the voltage at one end of the first resistive branch is less than the second voltage threshold, the first judgment unit 711 triggers the first switch control module 46 to maintain a ready state. Specifically, the second resistive branch and the first resistive branch are connected in series, and the reference voltage is distributed between the second and first resistive branches. One end of the first resistive branch is electrically connected to the first output terminal Vout1, and the other end is electrically connected to the second output terminal Vout2. When the first output terminal Vout1 and the second output terminal Vout2 are properly connected to the two electrodes of the load power supply 601, the internal resistance of the load power supply 601 forms a parallel relationship with the first resistive branch. Compared to the case where the first resistive branch is not connected in parallel with the internal resistance of the load power supply 601, after the first resistive branch is connected in parallel with the internal resistance of the load power supply 601, the distribution ratio of the reference voltage across the first resistive branch decreases, causing the voltage at one end of the first resistive branch to be less than the second voltage threshold. After detecting that the voltage at one end of the first resistive branch is less than the second voltage threshold, the first judgment unit 711 triggers the first switch control module 46 to remain in the ready state. Specifically, the voltage at one end of the first resistive branch can be understood as the detection voltage.

[0248] In some implementations, combined Figure 7 As shown, when the detected voltage is less than the second voltage threshold, the first judgment unit 711 outputs a resistive access signal to the first access detection module 47. Specifically, the resistive access signal is in the form of a low level.

[0249] In some other embodiments, when the detected voltage is less than the second voltage threshold, the first judgment unit 711 is used to output a resistive access signal to the first switch control module 46.

[0250] Specifically, the second access detection module 71 outputs a detection voltage between the first output terminal Vout1 and the second output terminal Vout2 at least during the detection period and when the voltage at the first output terminal Vout1 is less than the first voltage threshold. More specifically, in conjunction with Figure 7 As shown, the second access detection module 71 also includes a diode D16. The anode of diode D16 is electrically connected to the connection node between the first resistive branch and the second resistive branch, and the cathode of diode D16 is electrically connected to the first output terminal Vout1. When no vehicle ignition operation occurs, diode D16 can limit the voltage input of the load power supply 601 to the second access detection module 71.

[0251] In some implementations, the first resistive branch is a branch consisting of several resistors connected in series or in parallel.

[0252] In some implementations, the second resistive branch is a branch consisting of several resistors connected in series or in parallel.

[0253] In some implementations, combined Figure 7 As shown, the first resistive branch includes resistor R37, and the second resistive branch includes resistor R36. Resistors R36 and R37 are connected in series between the reference voltage point and ground. The connection node between resistors R36 and R37 is electrically connected to the first judgment unit 711.

[0254] In some implementations, combined Figure 7 As shown, the first judgment unit 711 includes a comparator U7 and a fourth voltage divider branch. The connection node between the first resistive branch and the second resistive branch is electrically connected to the non-inverting input terminal of the comparator U7. The fourth voltage divider branch is electrically connected between the reference voltage point and ground, and the intermediate node of the fourth voltage divider branch is electrically connected to the inverting input terminal of the comparator U7. The output terminal of the comparator U7 is used to trigger the first switch control module 46 to maintain a ready state. Specifically, the fourth voltage divider branch inputs a certain voltage to the inverting input terminal of the comparator U7 through voltage division, and the amplitude of this voltage corresponds to the second voltage threshold. When the first resistive branch is not connected in parallel with the internal resistance of the load power supply 601, the voltage at the non-inverting input terminal of the comparator U7 is not higher than the voltage at the inverting input terminal, and the comparator U7 outputs a high level. When the first resistive branch is connected in parallel with the internal resistance of the load power supply 601, the voltage at the non-inverting input terminal of comparator U7 is lower than the voltage at the inverting input terminal of comparator U7. The output of comparator U7 is low, which serves as a resistive access signal to trigger the first switch control module 46 to remain in the ready state.

[0255] Specifically, the output of comparator U7 can be electrically connected to the first access detection module 47 or the first switch control module 46.

[0256] Specifically, in combination Figure 7 As shown, the fourth voltage divider branch includes resistors R29 and R39, which are connected in series between the reference voltage point and ground. The connection point between resistors R29 and R39 is electrically connected to the inverting input of comparator U7.

[0257] Specifically, in combination Figure 7 As shown, the first judgment unit 711 also includes a resistor R3. One end of the resistor R3 is electrically connected to the connection node between the first resistive branch and the second resistive branch, and the other end is electrically connected to the non-inverting input terminal of the comparator U7, thereby limiting the input current of the non-inverting input terminal of the comparator U7.

[0258] Specifically, in combination Figure 7 As shown, the first judgment unit 711 also includes a capacitor C14, which is electrically connected between the inverting input terminal of the comparator U7 and ground, thereby improving the voltage stability of the inverting input terminal of the comparator U7 and reducing voltage fluctuations.

[0259] In some implementations, combined Figure 9 As shown, the forced start module 73 includes a switch Q13, a control unit 731, and a time-delay voltage divider unit 732. One current-carrying terminal of the switch Q13 is grounded, and the other current-carrying terminal is used to trigger the first switch control module 46 to switch to the ready state when in the on state. The time-delay voltage divider unit 732 is electrically connected between the control terminal of the switch Q13 and the control unit 731. When manually controlled, the control unit 731 can send an activation signal. When the duration of the activation signal is not less than a predetermined period of time, the time-delay voltage divider unit 732 triggers the switch Q13 to conduct.

[0260] Specifically, when the switch Q13 is in the ON state, the other current-carrying terminal of the switch Q13 transmits a low level to the first access detection module 47, so that the first access detection module 47 is in the ON state between the reference voltage point and the first switch control module 46, allowing the first switch control module 46 to obtain power.

[0261] Specifically, when switch Q13 is in the ON state, another current-carrying terminal of switch Q13 can transmit a low level to the first switch control module 46, enabling the first switch control module 46 to enter the ready state. Alternatively, the low level at the other current-carrying terminal of switch Q13 can turn on the first switch control module 46 internally, allowing operating current to flow in.

[0262] In some implementations, combined Figure 9As shown, the forced start module 73 also includes a locking unit 733 electrically connected between the reference voltage point and the control terminal of the switch Q13. The locking unit 733 has an on state and an off state between the reference voltage point and the control terminal of the switch Q13. When the other current-carrying terminal of the switch Q13 triggers the first switch control module 46 to switch to the ready state in the on state, it also triggers the locking unit 733 to switch to the on state. Specifically, when the control terminal of the switch Q13 is at a high level, the switch Q13 is on. In the on state, the other current-carrying terminal of the switch Q13 triggers the first switch control module 46 to enter the ready state at a low level. The other current-carrying terminal of the switch Q13 is also at a low level, which triggers the locking unit 733, making the locking unit 733 conduct between the reference voltage point and the control terminal of the switch Q13. The reference voltage is transmitted to the control terminal of the switch Q13 through the locking unit 733. Therefore, after the manual operation stops, the other current-carrying terminal of the switch Q13 can continue to trigger the first switch control module 46 at a low level, so that the first switch control module 46 remains in the ready state.

[0263] In some implementations, combined Figure 9 As shown, the control unit 731 includes a switch Q15, resistors R48 and R62, and a button SW1. One current-carrying terminal of switch Q15 is electrically connected to a reference voltage point. Resistor R62 is electrically connected between the other current-carrying terminal of switch Q15 and ground. The other current-carrying terminal of switch Q15 is electrically connected to the time-delay voltage divider unit 732. Resistor R48 is electrically connected between one current-carrying terminal of switch Q15 and the control terminal of switch Q15. Button SW1 has a pair of normally open contacts, one of which is electrically connected to the control terminal of switch Q15, and the other contact is grounded. Specifically, when button SW1 is pressed, the two normally open contacts of button SW1 are connected, the control terminal of switch Q15 is pulled low to a low level, and switch Q15 is turned on, thereby allowing the reference level to be transmitted to the other current-carrying terminal of switch Q15. Thus, control unit 731 can use a high level to trigger the time-delay voltage divider unit 732.

[0264] In some implementations, combined Figure 9As shown, the delay voltage divider unit 732 includes resistors R59, R60, and R67, and capacitor C24. Resistors R59, R60, and R67 are connected in series between the output terminal of the control unit 731 and ground. The connection node between resistors R60 and R67 is electrically connected to the control terminal of the switch Q13. One end of capacitor C24 is electrically connected to the connection node between resistors R59 and R60, and the other end is grounded. Specifically, when the output terminal of the control unit 731 outputs a high level, resistors R59, R60, and R67 act as a series voltage reducer to output a suitable bias voltage to the control terminal of the switch Q13. Resistor R59 also acts as a current limiter to control the voltage rise time of capacitor C24. Specifically, since resistors R60 and R67 are connected in series and then in parallel with capacitor C24, the control terminal of the switch Q13 is clamped by capacitor C24. After button SW1 is pressed, switch Q13 needs to wait for capacitor C24 to charge for a certain period of time before it can conduct. Therefore, button SW1 needs to be pressed continuously for a certain period of time before switch Q13 can switch to the conducting state, thereby preventing switch Q13 from responding when button SW1 is accidentally touched.

[0265] Furthermore, combined Figure 9 As shown, the delay voltage divider unit 732 also includes a diode D24. Diode D24 is connected in parallel with resistor R59. The cathode of diode D24 is electrically connected to the output terminal of the control unit 731. Specifically, after the locking unit 733 locks the conduction state of switch Q13, the charge on capacitor C24 can be released through resistors R60 and R67, or through diode D24 and control unit 731.

[0266] In some implementations, combined Figure 9 As shown, the forced start module 73 also includes a diode D37, the cathode of which is electrically connected to another current-carrying terminal of the switch Q13. The anode of the diode D37 is electrically connected to the first access detection module 47, and more specifically, the anode of the diode D37 is electrically connected to the control terminal of the switch Q16.

[0267] In some implementations, combined Figure 9As shown, the forced start module 73 also includes a diode D15. The anode of diode D15 is connected to the connection node between resistors R59 and R60, and the cathode is connected to the output terminal of the second access detection module 71. Specifically, when the second access detection module 71 outputs a low-level resistive access signal, the voltage across capacitor C24 is clamped to a low level, thereby limiting the charging of capacitor C24 by the control unit 731 and limiting the conduction of the switch Q13 triggered by the delay voltage divider unit 732. Thus, the forced start module 73 can suppress the triggering of the first switch control module 46, preventing the first switch control module 46 from entering the ready state under short-circuit conditions.

[0268] In some implementations, combined Figure 9 As shown, the forced start module 73 also includes a diode D14. The anode of diode D14 is connected to the connection node between resistors R59 and R60, and the cathode is connected to the reverse connection protection module 74. Specifically, when there is a reverse voltage between the first output terminal Vout1 and the second output terminal Vout2, the reverse connection protection module 74 transmits a low level to the cathode of diode D14, clamping the voltage across capacitor C24 to a low level. This limits the charging of capacitor C24 by the control unit 731 and limits the conduction of the switch Q13 triggered by the delay voltage divider unit 732, preventing the forced start module 73 from triggering the first switch control module 46 to enter the ready state when the first output terminal Vout1 and the second output terminal Vout2 are reverse connected to the load power supply 601.

[0269] In some implementations, combined Figure 9 As shown, the forced start module 73 also includes a diode D16. The anode of diode D16 is electrically connected to the control terminal of switch Q13, and the cathode is electrically connected to the second switch control module 48. Specifically, after the start-up timing ends, the second switch control module 48 outputs a low level to the cathode of diode D16, thus clamping the control terminal of switch Q13 to a low level, and switching Q13 to the off state. This prevents the forced start module 73 from causing the starting power supply 201 to discharge to the load power supply 601 for an extended period of time, reducing the power loss of the starting power supply 201 and preventing the starting power supply 201 from overheating.

[0270] In some implementations, combined Figure 9As shown, the reverse connection protection module 74 includes a resistor R35 and an optocoupler IC2. The primary side of the optocoupler IC2 has an anode and a cathode, and the secondary side has a collector and an emitter. Resistor R35 is electrically connected between the anode of the optocoupler IC2 and ground. The cathode of the optocoupler IC2 is electrically connected to the first output terminal Vout1. The collector of the optocoupler IC2 is electrically connected to the delay voltage divider unit 732; more specifically, the collector of the optocoupler IC2 is electrically connected to the cathode of diode D14, and the anode of diode D14 is electrically connected to the delay voltage divider unit 732. The emitter of the optocoupler IC2 is grounded. Specifically, when the first output terminal Vout1 is electrically connected to the second electrode of the load power supply 601 and the second output terminal Vout2 is electrically connected to the first electrode of the load power supply 601, the primary side of the optocoupler IC2 is excited, causing the secondary side of the optocoupler IC2 to conduct, thereby transmitting a low level to the delay voltage divider unit 732, limiting the delay voltage divider unit 732 to trigger the switch Q13 to conduct, thereby preventing the forced start module 73 from triggering the first switch control module 46 to enter the ready state when the first output terminal Vout1 and the second output terminal Vout2 are reverse connected to the load power supply 601.

[0271] In some implementations, combined Figure 10 As shown, the second switch control module 48 includes switch Q1, switch Q2, switch Q4, resistor R1, resistor R4, resistor R5, resistor R9, resistor R13, resistor R43, capacitor C1, capacitor C2, diode D1, and diode D30.

[0272] Specifically, one current-carrying terminal of switch Q1 is electrically connected to the first access detection module 47 to receive a connection confirmation signal. Resistor R1 and capacitor C1 are connected in series between one current-carrying terminal of switch Q1 and ground. One end of resistor R4 is electrically connected to the control terminal of switch Q1, and the other end is electrically connected to the connection node between resistor R1 and capacitor C1. The other current-carrying terminal of switch Q1 is electrically connected to the anode of diode D1. Resistor R5 is electrically connected between the cathode of diode D1 and the control terminal of switch Q2. The anode of capacitor C2 is electrically connected to the cathode of diode D1. The cathode of capacitor C2 is grounded. Specifically, capacitor C2 is an electrolytic capacitor.

[0273] Specifically, resistors R43 and R9 are connected in series between the reference voltage point and the control terminal of switch Q4. One current-carrying terminal of switch Q2 is electrically connected to the connection node between resistors R43 and R9, and the other current-carrying terminal is grounded. Resistor R13 is electrically connected between the control terminal of switch Q4 and ground. One current-carrying terminal of switch Q4 is electrically connected to the cathode of diode D30, and the other current-carrying terminal is grounded. The anode of diode D30 is electrically connected to the aging control terminal of switch drive unit 411.

[0274] Furthermore, one current-carrying terminal of switch Q4 is also electrically connected to the control terminal of switch Q13. More specifically, one current-carrying terminal of switch Q4 is also electrically connected to the cathode of diode D36, and the anode of diode D36 is electrically connected to the control terminal of switch Q13. This allows switch Q13 to be stopped from conducting after the activation timing ends, and the first switch control module 46 to exit the ready state.

[0275] Specifically, when a connection confirmation signal is received at one of the current-carrying terminals of switch Q1, the reference voltage in the form of the connection confirmation signal charges capacitor C1 through resistor R1. Since the control terminal of switch Q1 is initially clamped to a lower voltage by capacitor C1, a potential difference exists between the current-carrying terminal and the control terminal of switch Q1 for a short period, causing switch Q1 to conduct for a short time after receiving the supply voltage. During the conduction period of switch Q1, switch Q1 charges capacitor C2 through diode D1. In some embodiments, the conduction duration of switch Q1 is approximately 1 second. In other embodiments, the conduction duration of switch Q1 can be adjusted according to actual needs, specifically by adjusting the resistance value of resistor R1 or the capacitance value of capacitor C1.

[0276] When the voltage across capacitor C1 rises to match the voltage at one current-carrying terminal of switch Q1, switch Q1 opens, and the charge in capacitor C2 is released through resistor R5 and switch Q2. When the voltage across capacitor C2 exceeds the bias voltage at the control terminal of switch Q2, switch Q2 turns on, clamping the control terminal of switch Q4 to a low potential, and switch Q4 remains off. Due to the limitation of resistor R5, the discharge process of capacitor C2 needs to continue for a period of time. During this period, switch Q4 remains off, preventing the timing control terminal of switch drive unit 411 from being clamped to a low level. When the voltage across capacitor C2 drops to a level that prevents switch Q2 from remaining on, switch Q2 turns off. The reference voltage point is divided by resistors R43, R9, and R13, and a voltage is applied to the control terminal of switch Q4, turning on switch Q4. After switch Q4 turns on, the timing control terminal of switch drive unit 411 is clamped to a low level, and switch drive unit 411 keeps switch K1 off. Therefore, after the activation timing ends, the second switch control module 48 can suppress the triggering of the switch module 41 by the first switch control module 46, so that the switch module 41 remains disconnected between the first output terminal Vout1 and the second output terminal Vout2.

[0277] Specifically, the duration for which switch Q2 remains on can be understood as the activation timing process. After switch Q4 is turned on, the emergency start circuit 400 remains in standby mode. In some embodiments, the activation timing duration is approximately 60 seconds. In other embodiments, the duration for which switch Q2 is on can be adjusted according to actual needs, specifically by adjusting the resistance value of resistor R5 or the capacitance value of capacitor C2.

[0278] In some implementations, combined Figure 10 As shown, the second switch control module 48 also includes a switch Q5, resistors R10 and R14. The anode of diode D30 is also electrically connected to one current-carrying terminal of switch Q5, and the other current-carrying terminal of switch Q5 is grounded. Resistor R10 is electrically connected between the other current-carrying terminal of switch Q1 and the control terminal of switch Q5. Resistor R14 is electrically connected between the control terminal of switch Q5 and ground. Specifically, during the conduction period of switch Q1, the connection node between resistors R10 and R14 has a voltage, which turns on switch Q5 and clamps the timing control terminal of switch drive unit 411 to a low level, thereby keeping switch K1 off before the timing is activated.

[0279] In some implementations, combined Figure 12 As shown, the voltage detection module 44 includes a comparator U5, a fifth voltage divider branch, and a sixth voltage divider branch. The fifth voltage divider branch is electrically connected between the positive terminal of the startup power supply 201 and ground, and its intermediate node is electrically connected to the inverting input terminal of the comparator U5. The sixth voltage divider branch is electrically connected between the reference voltage point and ground, and its intermediate node is electrically connected to the non-inverting input terminal of the comparator U5. The output terminal of the comparator U5 is used to output a stop signal. Specifically, when the output voltage of the startup power supply 201 is lower than the third voltage threshold, the output terminal of the comparator U5 outputs a high-level stop signal. Specifically, the output terminal of the comparator U5 is used to output a voltage abnormality indication signal. In some embodiments, one end of the fifth voltage divider branch is electrically connected to the positive terminal of the startup power supply 201 through a diode D28.

[0280] In some embodiments, the fifth voltage divider branch includes resistors R22 and R30. Resistors R22 and R30 are connected in series between the positive terminal of the power supply 201 and ground. The node between resistors R22 and R30 is electrically connected to the inverting input of comparator U5. In some embodiments, the sixth voltage divider branch includes resistors R18 and R33. Resistors R18 and R33 are connected in series between the reference voltage point and ground. The node between resistors R18 and R33 is electrically connected to the non-inverting input of comparator U5.

[0281] Specifically, the voltage detection module 44 also includes a diode D12, and the output terminal of the comparator U5 is electrically connected to the anode of the diode D12. The cathode of the diode D12 is used to output a stop signal. Through the reverse isolation effect of the diode D12, the state of the output terminal of the comparator U5 can be prevented from being interfered with by stop signals output by other modules. In some embodiments, the voltage detection module 44 also includes a capacitor C10, which is electrically connected between the non-inverting input terminal of the comparator U5 and ground, thereby playing a filtering role.

[0282] In some implementations, combined Figure 12 As shown, the voltage detection module 44 also includes a comparator U6, a seventh voltage divider branch, and an eighth voltage divider branch. The seventh voltage divider branch is electrically connected between the first output terminal Vout1 and ground, and its intermediate node is electrically connected to the non-inverting input terminal of the comparator U6. The eighth voltage divider branch is electrically connected between the reference voltage point and ground, and its intermediate node is electrically connected to the inverting input terminal of the comparator U6. The output terminal of the comparator U6 is electrically connected to the non-inverting input terminal of the comparator U5. When the voltage of the first electrode of the load power supply 601 is greater than the fifth voltage threshold, the output terminal of the comparator U6 inputs the reference voltage to the non-inverting input terminal of the comparator U5, causing the voltage at the non-inverting input terminal of the comparator U5 to rise. Therefore, when the output voltage of the power supply 201 remains unchanged, but the voltage of the first electrode of the load power supply 601 is too high, the output terminal of the comparator U5 outputs a stop signal and a voltage abnormality warning signal.

[0283] In some embodiments, the seventh voltage divider branch includes resistors R19 and R31. Resistors R19 and R31 are connected in series between the first output terminal Vout1 and ground. The connection node between resistors R19 and R31 is electrically connected to the non-inverting input terminal of comparator U6. In some embodiments, the eighth voltage divider branch includes resistors R25 and R34. Resistors R25 and R34 are connected in series between the reference voltage point and ground. The connection node between resistors R25 and R34 is electrically connected to the inverting input terminal of comparator U6.

[0284] Specifically, in combination Figure 12 As shown, the voltage detection module 44 also includes a diode D13. Diode D13 is electrically connected between the output of comparator U6 and the non-inverting input of comparator U5. The unidirectional conduction direction of diode D13 corresponds to the current direction from the output of comparator U6 to the non-inverting input of comparator U5, thereby preventing the output voltage of comparator U6 from affecting the voltage of the intermediate node of the sixth voltage divider branch when the output of comparator U6 is at a low level.

[0285] In some embodiments, the voltage detection module 44 further includes an overvoltage detection branch. The overvoltage detection branch is electrically connected between the positive terminal of the startup power supply 201 and the node of the seventh voltage divider branch. When the output voltage of the startup power supply 201 exceeds a fourth voltage threshold, the overvoltage detection branch conducts and transmits a voltage greater than the voltage at the inverting input of comparator U6. The output of comparator U6 inputs a reference voltage to the non-inverting input of comparator U5, causing the voltage at the non-inverting input of comparator U5 to rise. Therefore, when the output voltage of the startup power supply 201 is too high, the output of comparator U5 outputs a stop signal and a voltage abnormality warning signal.

[0286] In some implementations, combined Figure 12 As shown, the overvoltage detection branch includes a Zener diode ZD2, a diode D7, and a resistor R40. Zener diodes ZD2 and D7, along with resistor R40, are connected in series between the positive terminal of the startup power supply 201 and the node of the seventh voltage divider branch. The unidirectional conduction direction of Zener diode ZD2 corresponds to the current direction from the node of the seventh voltage divider branch to the positive terminal of startup power supply 201. The unidirectional conduction direction of diode D7 corresponds to the current direction from the positive terminal of startup power supply 201 to the node of the seventh voltage divider branch. Specifically, when the output voltage of startup power supply 201 exceeds the fourth voltage threshold, Zener diode ZD2 breaks down in reverse. Resistors R40 and R31 proportionally distribute the output voltage of startup power supply 201 to the non-inverting input of comparator U6, causing the voltage at the non-inverting input of comparator U6 to rise. Before Zener diode ZD2 conducts, diode D7 is used to prevent the voltage at the non-inverting input of comparator U6 from interfering with the positive voltage of startup power supply 201.

[0287] In some implementations, combined Figure 12 As shown, the voltage detection module 44 also includes a second feedback branch. The second feedback branch is electrically connected between the output terminal of comparator U5 and the non-inverting input terminal of comparator U5. When a high level appears at the output terminal of comparator U5, this high level is transmitted to the non-inverting input terminal of comparator U5 through the second feedback branch, thereby locking the output state of comparator U5 to a high level and maintaining the output of a stop signal, which is in the form of a high level. In some embodiments, the second feedback branch includes a diode D5 and a resistor R20. Diode D5 and resistor R20 are connected in series between the output terminal of comparator U5 and the non-inverting input terminal of comparator U5. The unidirectional conduction direction of diode D5 corresponds to the current direction from the output terminal of comparator U5 to the non-inverting input terminal of comparator U5.

[0288] In some implementations, combined Figure 13As shown, the temperature detection module 45 includes a comparator U3, a ninth voltage divider branch, and a tenth voltage divider branch. The ninth voltage divider branch is electrically connected between the reference voltage point and ground. A node of the ninth voltage divider branch is electrically connected to one input terminal of the comparator U3. The resistance value of a portion of the ninth voltage divider branch is temperature sensitive. The tenth voltage divider branch is electrically connected between the reference voltage point and ground. A node of the tenth voltage divider branch is electrically connected to the other input terminal of the comparator U3. The output terminal of the comparator U3 is used to output a stop signal to the switch module 41. In some embodiments, the output terminal of the comparator U3 is also used to output an over-temperature warning signal to the light indicator module 43.

[0289] In some implementations, combined Figure 13 As shown, the ninth voltage divider branch includes resistor R23 and resistor NTC1. Resistor NTC1 is a negative temperature coefficient thermistor. Resistor R23 and resistor NTC1 are connected in series between the reference voltage point and ground. The connection node between resistor R23 and resistor NTC1 is electrically connected to the inverting input terminal of comparator U3. In some embodiments, resistor NTC1 can be replaced with a positive temperature coefficient thermistor, and the connection node between resistor R23 and resistor NTC1 is electrically connected to the non-inverting input terminal of comparator U3. In some embodiments, the temperature detection module 45 also includes capacitor C15, which is electrically connected between the inverting input terminal of comparator U3 and ground, thereby serving a filtering function.

[0290] In some implementations, combined Figure 13 As shown, the tenth voltage branch includes resistors R21 and R32. Resistors R21 and R32 are connected in series between the reference voltage point and ground. The connection point between resistors R21 and R32 is electrically connected to the non-inverting input of comparator U3.

[0291] In some implementations, combined Figure 13 As shown, the temperature detection module 45 also includes a third feedback branch. The third feedback branch is electrically connected between the output terminal of comparator U3 and the non-inverting input terminal of comparator U3. When a high level appears at the output terminal of comparator U3, this high level is transmitted to the non-inverting input terminal of comparator U3 through the third feedback branch, thereby locking the output state of comparator U3 to a high level and maintaining the output of a stop signal. This stop signal is in the form of a high level. In some embodiments, the third feedback branch includes a diode D9 and a resistor R17. Diode D9 and resistor R17 are connected in series between the output terminal of comparator U3 and the non-inverting input terminal of comparator U3. The unidirectional conduction direction of diode D9 corresponds to the current direction from the output terminal of comparator U3 to the non-inverting input terminal of comparator U3.

[0292] In some implementations, combined Figure 13As shown, the temperature detection module 45 also includes a diode D11. The output of comparator U3 outputs a stop signal to the switch module 41 through diode D11. The reverse isolation effect of diode D11 prevents interference from stop signals output by other modules on the output of comparator U3. More specifically, the output of comparator U3 is electrically connected to the anode of diode D11. The cathode of diode D11 is electrically connected to the switch module 41.

[0293] In some implementations, the output of the first switch control module 46 is electrically connected to the timing control terminal of the switch drive unit 411.

[0294] In some implementations, combined Figure 14b As shown, the sound alarm module 42 includes an electroacoustic element BZ1, a switch Q3, resistors R6 and R8. One end of the electroacoustic element BZ1 is electrically connected to a reference voltage point. The other end of the electroacoustic element BZ1 is electrically connected to a current-carrying terminal of the switch Q3. The other current-carrying terminal of the switch Q3 is grounded. One end of the resistor R6 is used to receive a stop signal, and the other end is electrically connected to the control terminal of the switch Q3. Resistor R8 is electrically connected between one end of resistor R6 and ground.

[0295] Specifically, when the overload detection module 81, voltage detection module 44, or temperature detection module 45 outputs a stop signal, the switch Q3 is turned on, creating a potential difference between the two ends of the electroacoustic element BZ1. Current flows through the electroacoustic element BZ1, causing it to emit an alarm sound. In some embodiments, the electroacoustic element BZ1 may be a buzzer or other device capable of generating sound when energized.

[0296] In some embodiments, the sound alarm module 42 further includes a diode D2. The cathode of diode D2 is electrically connected to one end of the electroacoustic element BZ1, and the anode of diode D2 is electrically connected to the other end of the electroacoustic element BZ1, thereby releasing the reverse electromotive force of the electroacoustic element BZ1 through diode D2.

[0297] In some implementations, combined Figure 14a As shown, the light indicator module 43 also includes a light-emitting diode (LED) D45 and a third current-limiting branch. The LED D45 and the third current-limiting branch are connected in series between the positive terminal of the starting power supply 201 and ground. The unidirectional conduction direction of the LED D45 corresponds to the direction from the positive terminal of the starting power supply 201 to ground. Furthermore, the positive terminal of the starting power supply 201 transmits a high-level signal to the LED D45 through the third current-limiting branch, causing the LED D45 to conduct and emit a standby indicator light, indicating that the emergency start circuit 400 is electrically connected to the electrode of the starting power supply 201.

[0298] In some implementations, the third current-limiting branch includes resistors R57 and R58. Resistors R57 and R58 are connected in series between the positive terminal of the power supply 201 and the anode of the light-emitting diode D45.

[0299] In some implementations, combined Figure 14a As shown, the light indicator module 43 includes a light-emitting diode (LED) D47 and a second current-limiting branch. The LED D47 and the second current-limiting branch are connected in series between the output terminal of the overload detection module 81 and ground. The unidirectional conduction direction of the LED D47 corresponds to the current direction from the output terminal of the overload detection module 81 to ground. Specifically, when the overload detection module 81 outputs an overload indication signal, the overload indication signal causes the LED D47 to conduct and generate an overload warning light. In some embodiments, the second current-limiting branch is electrically connected between the output terminal of the overload detection module 81 and the anode of the LED D47, and the cathode of the LED D47 is grounded. In other embodiments, the second current-limiting branch is electrically connected between the cathode of the LED D47 and ground, and the anode of the LED D47 is electrically connected to the output terminal of the overload detection module 81. For example, the second current-limiting branch includes a resistor R79. In one embodiment, resistor R79 is electrically connected between the cathode of LED D47 and ground, and the anode of LED D47 is electrically connected to the output terminal of overload detection module 81.

[0300] In some implementations, combined Figure 14a As shown, the light indicator module 43 also includes a switch Q22. One current-carrying terminal of switch Q22 is electrically connected to the anode of LED D45 or a node of the third current-limiting branch. The other current-carrying terminal of switch Q22 is grounded, and the control terminal of switch Q22 is electrically connected to the anode of LED D47. Specifically, when the overload detection module 81 does not output an overload indication signal, the positive terminal of the power supply 201 transmits a high level to LED D45 through the third current-limiting branch, causing LED D45 to conduct and emit a standby indicator light. When the overload detection module 81 outputs an overload indication signal, the high level of the overload indication signal turns on switch Q22, clamping the anode of LED D45 to a low level, and no current flows through LED D45, thus extinguishing the standby indicator light.

[0301] In some implementations, combined Figure 14aAs shown, the light indicator module 43 also includes LEDs D42, D43, and D44. The anodes of LEDs D42, D43, and D44 are electrically connected to the positive terminal of the starting power supply 201. The cathodes of LEDs D42, D43, and D44 are electrically connected to one end of the third current-limiting branch. The other end of the third current-limiting branch is electrically connected to the anode of LED D45. Specifically, when the anode of LED D42 is connected to the positive terminal of the starting power supply 201, LEDs D42, D43, and D44 are simultaneously turned on and jointly generate the ignition indicator light. The ignition indicator light indicates that the emergency start circuit 400 and the starting power supply 201 have completed electrical connection.

[0302] In some implementations, combined Figure 14a As shown, the light indicator module 43 also includes a light-emitting diode (LED) D39 and a resistor R56. The LED D39 and resistor R56 are connected in series between the output terminal of the temperature detection module 45 and ground. The unidirectional conduction direction of the LED D39 corresponds to the direction from the output terminal of the temperature detection module 45 to ground. When the voltage detection module 44 outputs an over-temperature warning signal, the LED D39 conducts and emits an over-temperature warning light.

[0303] In some implementations, combined Figure 14a As shown, the light indicator module 43 also includes a light-emitting diode (LED) D40. The LED D40 and resistor R56 are connected in series between the output terminal of the voltage detection module 44 and ground. The unidirectional conduction direction of the LED D40 corresponds to the direction from the output terminal of the voltage detection module 44 to ground. When the voltage detection module 44 outputs a voltage abnormality warning signal, the LED D40 conducts and emits a voltage abnormality warning light.

[0304] In some implementations, combined Figure 11 As shown, the overload detection module 81 includes a second judgment unit 811 and an output unit 812. The second judgment unit 811 is electrically connected to the electrode of the starting power supply 201. The second judgment unit 811 outputs a low-voltage identification signal when the voltage at the first output terminal Vout1 is lower than the sixth voltage threshold. After receiving the low-voltage identification signal, the output unit 812 maintains the output of a stop signal. Specifically, even if the low-voltage identification signal disappears after the voltage at the first electrode of the starting power supply 201 recovers to a level not lower than the sixth voltage threshold, the output unit 812 still maintains the output of the stop signal. The output unit 812 only cancels the output of the stop signal after power is cut off and then restored, avoiding gradual cumulative damage to the starting power supply 201 or other electronic components due to repeated overload conditions.

[0305] In some implementations, combined Figure 11 As shown, the second judgment unit 811 includes a comparator U1, an eleventh voltage divider branch, and a twelfth voltage divider branch. One end of the eleventh voltage divider branch is electrically connected to the positive terminal of the starting power supply 201, and the node of the eleventh voltage divider branch is electrically connected to one input terminal of the comparator U1. One end of the twelfth voltage divider branch is used to input a reference voltage, and the node of the twelfth voltage divider branch is electrically connected to the other input terminal of the comparator U1. The output terminal of the comparator U1 is electrically connected to the output unit 812 and is used to transmit a low-voltage identification signal to the output unit 812.

[0306] For example, the output of the voltage regulator module 49 is used to input a reference voltage to one end of the twelfth voltage divider branch.

[0307] In some embodiments, the node of the eleventh voltage divider branch is electrically connected to the inverting input of comparator U1. The node of the twelfth voltage divider branch is electrically connected to the non-inverting input of comparator U1, and the low-voltage identification signal is in the form of a high level. In some embodiments, the voltage division ratio of the twelfth voltage divider branch is set according to the relationship between the reference voltage and the sixth voltage threshold, and the voltage division ratio of the eleventh voltage divider branch, so that the comparison result between the voltage at the inverting input and the voltage at the non-inverting input of comparator U1 is equivalent to the comparison result between the positive voltage of the power supply 201 and the sixth voltage threshold. In one embodiment, when the voltage division ratio of the eleventh voltage divider branch is P1, the reference voltage is VB, and the sixth voltage threshold is VTH1, then the voltage division ratio of the twelfth voltage divider branch is P2 = (VTH1 × P1) / VB.

[0308] In some implementations, combined Figure 11 As shown, the eleventh voltage divider branch includes resistors R66 and R77. Resistors R66 and R77 are connected in series between the positive terminal of the power supply 201 and ground. The node between resistors R66 and R77 is electrically connected to one input terminal of comparator U1. The voltage division ratio of the eleventh voltage divider branch can be understood as the ratio between the resistance of resistor R77 and the total resistance of the eleventh voltage divider branch (the sum of the resistances of resistors R66 and R77). Specifically, resistor R66 can be understood as the equivalent resistance of several resistors connected in series or parallel. Resistor R77 can also be understood as the equivalent resistance of several resistors connected in series or parallel.

[0309] In some implementations, combined Figure 11As shown, the twelfth voltage divider branch includes resistors R64 and R68. Resistors R64 and R68 are connected in series between the reference voltage point and ground. The node between resistors R64 and R68 is electrically connected to one input terminal of comparator U1. The voltage division ratio of the twelfth voltage divider branch can be understood as the ratio between the resistance value of resistor R68 and the total resistance value of the twelfth voltage divider branch (the sum of the resistance values ​​of resistors R64 and R68). Specifically, resistor R64 can be understood as the equivalent resistance of several resistors connected in series or parallel. Resistor R68 can also be understood as the equivalent resistance of several resistors connected in series or parallel. Specifically, the reference voltage point is the electrical position of the voltage relative to ground.

[0310] Furthermore, combined Figure 11 As shown, the second judgment unit 811 also includes a capacitor C11, which is electrically connected between the reference voltage point and ground, thereby improving the stability of the reference voltage.

[0311] In some implementations, combined Figure 11 As shown, the output unit 812 includes a switch Q21, a switch Q20, a fourth current-limiting branch, and a first feedback branch. The control terminal of switch Q21 is electrically connected to the output terminal of the second judgment unit 811, one current-carrying terminal of switch Q21 is electrically connected to the control terminal of switch Q20, and the other current-carrying terminal of switch Q21 is grounded. One current-carrying terminal of switch Q20 is used to input a reference voltage, and the other current-carrying terminal of switch Q20 is used to output a stop signal to the switch module 41. The fourth current-limiting branch is electrically connected between one current-carrying terminal of switch Q20 and the control terminal of switch Q20. The first feedback branch is electrically connected between the other current-carrying terminal of switch Q20 and the control terminal of switch Q21. Specifically, when the second judgment unit 811 outputs a low-voltage identification signal to the control terminal of switch Q21, switch Q21 is turned on, and the control terminal of switch Q20 is in a low-potential state. The bias voltage between one current-carrying terminal and the control terminal of switch Q20 turns switch Q20 on, thereby enabling the other current-carrying terminal of switch Q20 to output a stop signal. Specifically, the stop signal is a high-level signal with a voltage amplitude equal to the reference voltage. Since the first feedback branch is electrically connected between the other current-carrying terminal of switch Q20 and the control terminal of switch Q21, even after the low-voltage identification signal disappears, the other current-carrying terminal of switch Q20 can transmit a high-level signal to the control terminal of switch Q21, thus maintaining the conduction of switch Q21. Therefore, output unit 812 can maintain the output of the stop signal, preventing the power supply 201 or other electronic components from repeatedly entering an overload state. More specifically, the other current-carrying terminal of switch Q20 outputs a stop signal to the stop control terminal of switch drive unit 411.

[0312] In some embodiments, the other current-carrying terminal of switch Q20 is also used to output an overload indication signal to the light indicator module 43. Specifically, resistor R11 is electrically connected between the other current-carrying terminal of switch Q20 and switch Q7. In some embodiments, when other modules capable of outputting stop signals are present, output unit 812 further includes diode D17, with the anode of diode D17 electrically connected to the other current-carrying terminal of switch Q20 and the cathode of diode D17 electrically connected to switch module 41. Through the reverse isolation effect of diode D17, the state of switch Q21 can be prevented from being interfered with by stop signals output by other modules.

[0313] In some implementations, combined Figure 11 As shown, the fourth current-limiting branch includes resistor R65. Resistor R65 is electrically connected between one current-carrying terminal of switch Q20 and the control terminal of switch Q20.

[0314] In some implementations, combined Figure 11 As shown, the first feedback branch includes a diode D34 and a resistor R71 connected in series between the other current-carrying terminal of switch Q20 and the control terminal of switch Q21. The unidirectional conduction direction of diode D34 corresponds to the direction from the other current-carrying terminal of switch Q20 to the control terminal of switch Q21, thus preventing the voltage on the control terminal of switch Q21 from being directly transmitted as a stop signal.

[0315] In some implementations, combined Figure 11 As shown, the output unit 812 also includes an isolation delay branch. One end of the isolation delay branch is electrically connected to the output terminal of the second judgment unit 811, the other end of the isolation delay branch is grounded, and the node of the isolation delay branch is electrically connected to the control terminal of the switch Q21. Specifically, the isolation delay branch is used to trigger the switch Q21 to conduct after the duration of the low-voltage identification signal exceeds a predetermined time threshold, thereby avoiding the switch module 41 from being difficult to stabilize in the conducting state due to occasional and short-term overload conditions. The isolation delay branch is also used to ensure voltage isolation between the control terminal of the switch Q21 and the output terminal of the second judgment unit 811, preventing voltage clamping between the control terminal of the switch Q21 and the output terminal of the second judgment unit 811.

[0316] Specifically, the isolation delay branch is resistive between the output of the second judgment unit 811 and the control terminal of the switch Q21, and capacitive between the control terminal of the switch Q21 and ground. When the output of the second judgment unit 811 outputs a high-level low-voltage identification signal, the output of the second judgment unit 811 inputs charge to the capacitive portion through the resistive portion. The resistive portion acts as a current limiter, requiring a certain rise time for the voltage to the capacitive portion. Therefore, the switch Q21 needs to be turned on only after the low-voltage identification signal has been present for a certain period of time.

[0317] In some implementations, combined Figure 11 As shown, the isolation delay branch includes resistor R74 and capacitor C20. Resistor R74 is electrically connected between the control terminal of switch Q21 and the output terminal of the second judgment unit 811. Capacitor C20 is electrically connected between the control terminal of switch Q21 and ground. Specifically, resistor R74 can be understood as the equivalent resistance of several resistors connected in series or parallel. Capacitor C20 can be understood as the equivalent capacitance of several capacitors connected in series or parallel. Specifically, by setting the resistance value of resistor R74 and the capacitance value of capacitor C20, the time required for the voltage of capacitor C20 to rise to trigger switch Q21 to conduct can be controlled, that is, the delay time from the appearance of the low-voltage identification signal to the conduction of switch Q21.

[0318] In some implementations, combined Figure 11 As shown, the output unit 812 also includes a resistor R76. Resistor R76 is electrically connected between the control terminal of the switch Q21 and ground. Specifically, when the low-voltage identification signal appears briefly and then disappears, resistor R76 can release the charge of capacitor C20, which helps to accelerate the voltage drop of capacitor C20, allowing the delay to restart when the low-voltage identification signal reappears. Specifically, resistor R76 also works with resistor R71 to form a voltage divider, so that the first feedback branch applies a suitable voltage to the control terminal of the switch Q21. Specifically, resistor R76 also works with resistor R74 to form a voltage divider, so that the output terminal of the second judgment unit 811 applies a suitable voltage to the control terminal of the switch Q21.

[0319] In some implementations, combined Figure 15 As shown, the voltage regulator module 49 includes a voltage regulator U2, a resistor R2, and a capacitor C3. Resistor R2 is electrically connected between the input terminal of the voltage regulator U2 and the positive terminal of the power supply 201. Capacitor C3 is electrically connected between the input terminal of the voltage regulator U2 and ground.

[0320] In some embodiments, the voltage regulator module 49 further includes a diode D28 and a capacitor C7. The anode of diode D28 is electrically connected to the positive terminal of the starting power supply 201, and the cathode of diode D28 is electrically connected to resistor R2. Capacitor C7 is a electrolytic capacitor, and the positive terminal of capacitor C7 is electrically connected to the cathode of diode D28, while the negative terminal of capacitor C7 is grounded. In some embodiments, the positive terminal of the starting power supply 201 is electrically connected to the overload detection module 81, the switching module 41, the voltage detection module 44, or the light indicator module 43 through diode D28, so as to prevent the overload detection module 81, the switching module 41, the voltage detection module 44, or the light indicator module 43 from being affected by reverse voltage when the starting power supply 201 is reverse connected.

[0321] In some embodiments, the voltage regulator module 49 further includes capacitors C4 and C6. Capacitor C4 is electrically connected between the output terminal of the voltage regulator U2 and ground. Capacitor C6 is a decapsulator, with its positive terminal electrically connected to the output terminal of the voltage regulator U2 and its negative terminal grounded. Specifically, the ground terminal of the voltage regulator U2 is grounded. The voltage regulator U2 is a voltage regulator or an IC chip with voltage regulation function. Specifically, the output terminal of the voltage regulator U2 is used to output a reference voltage.

[0322] The above embodiments are merely preferred embodiments of this application and are not intended to limit the scope of this application. Any modifications and improvements made by those skilled in the art to the technical solutions of this application without departing from the spirit of this application should fall within the protection scope defined by the claims of this application.

Claims

1. An emergency start circuit for operably connecting a starter power supply to a load power supply, characterized in that, include: The first input terminal and the second input terminal are used to electrically connect the first electrode and the second electrode of the power supply, respectively. The first output terminal and the second output terminal are used to electrically connect the first electrode and the second electrode of the load power supply, respectively. The second output terminal is electrically connected to the second input terminal; A switching module is electrically connected between the first input terminal and the first output terminal. When the first output terminal and the second output terminal are correctly connected to the load power supply and the working conditions are met, the switching module alternately turns on and off. and A voltage fluctuation detection module is electrically connected to at least one of the first input terminal, the first output terminal, and the branch between the first input terminal and the first output terminal. It is used to detect potential fluctuations at the connection points. When the detected potential fluctuation reaches the fluctuation threshold, the voltage fluctuation detection module triggers the switch module to remain in the conducting state.

2. The emergency start circuit of claim 1, wherein It also includes a first switch control module; the first switch control module is electrically connected between the voltage fluctuation detection module and the switch module; the first switch control module controls the state of the switch module at least according to the triggering of the voltage fluctuation detection module.

3. The emergency start circuit of claim 2, wherein, The first switch control module includes a timing management chip U4; the timing management chip U4 is provided with a first level locking terminal, a second level locking terminal and an output terminal; the first level locking terminal and the second level locking terminal are electrically connected to the voltage fluctuation detection module; when triggered by the voltage fluctuation detection module, the output terminal continuously outputs a valid level to the switch module, and the valid level is used to trigger the switch module to switch to the on state.

4. The emergency start circuit of claim 1, wherein The voltage fluctuation detection module includes a fluctuation detection unit and an access coupling unit electrically connected to the fluctuation detection unit; the fluctuation detection unit is electrically connected to at least one of the first input terminal and the first output terminal; When the detected potential fluctuation reaches the fluctuation threshold, the fluctuation detection unit outputs an ignition detection signal to the access coupling unit; when the first output terminal and the second output terminal are correctly connected to the load power supply and the working conditions are met, the access coupling unit triggers the switching module to remain in the conducting state upon receiving the ignition detection signal.

5. The emergency start circuit of claim 4, wherein, The fluctuation detection unit includes a switch Q11, a diode D4, a capacitor C23, and a fluctuation current limiting branch. The anode of the diode D4 is electrically connected to the first input terminal or the first output terminal. The capacitor C23 is electrically connected between the cathode of the diode D4 and ground. The cathode of the diode D4 is also electrically connected to one current-carrying terminal of the switch Q11. One end of the fluctuation current limiting branch is electrically connected to the control terminal of the switch Q11, and the other end is electrically connected to the first input terminal or the first output terminal. The other current-carrying terminal of the switch Q11 is used to output an ignition detection signal to the access coupling unit.

6. The emergency start circuit of claim 5, wherein, The fluctuation current limiting branch includes a resistor R87, one end of which is electrically connected to the control terminal of the switch Q11, and the other end is electrically connected to the first input terminal or the first output terminal; or, the fluctuation current limiting branch includes a resistor R87 and a diode D6 connected in series, wherein the unidirectional conduction direction of the diode D6 corresponds to the current outflow direction from the control terminal of the switch Q11.

7. The emergency start circuit of claim 5, wherein The fluctuation detection unit also includes a resistor R15, which is electrically connected between another current-carrying terminal of the switch Q11 and the access coupling unit.

8. The emergency start circuit of claim 4, wherein, The access coupling unit includes a switch Q9, a switch Q14, a switch Q23, a resistor R7, and a first voltage divider branch. One current-carrying terminal of the switch Q9 is used to receive a connection confirmation signal. The resistor R7 is electrically connected between one current-carrying terminal of the switch Q9 and the control terminal of the switch Q9. One current-carrying terminal of the switch Q14 is electrically connected to the control terminal of the switch Q9, and the other current-carrying terminal is grounded. The control terminal of the switch Q14 is used to receive the ignition detection signal. The first voltage divider branch is electrically connected between the other current-carrying terminal of the switch Q9 and ground. The intermediate node of the first voltage divider branch is electrically connected to the control terminal of the switch Q23. One current-carrying terminal of the switch Q23 is used to trigger the switch module to remain in the on state, and the other current-carrying terminal is grounded.

9. An intelligent ignition clip for operatively connecting a starting power source to a load power source, characterized by, include: The shell, and The emergency start circuit as described in any one of claims 1 to 8, wherein the emergency start circuit is disposed inside the housing, and the start power supply is disposed outside the housing.

10. The intelligent ignition clip of claim 9, wherein, Both the first output terminal and the second output terminal are configured as clips disposed outside the housing.

11. A starting device characterized by comprising: include: case; The power supply is located inside the housing. as well as The emergency start circuit as described in any one of claims 1 to 8, wherein the emergency start circuit is disposed within the housing.

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