A charge prevention lock system applied to a laser treatment instrument

Abstract

The application provides a charge prevention lock dead system applied to a laser treatment instrument, and relates to the technical field of energy storage and discharge.The power supply input interface is connected with the first port of the lock dead prevention switch device, the second port of the lock dead prevention switch device is connected with the input end of the buffer charge current limiting component, the output end of the buffer charge current limiting component is connected with the first port of the buffer charge switch device, and the buffer charge current limiting component is used for current limiting; the second port of the buffer charge switch device is connected with the energy storage component, the control end of the buffer charge switch device is connected with the enable control unit; the control end of the lock dead prevention switch device is connected with the output end of the lock dead prevention delay component, and the input end of the lock dead prevention delay component is externally connected with the direct current power supply.The application can avoid the situation that the energy storage and discharge circuit continuously stores energy for the capacitor, avoids the damage of the capacitor, and improves the reliability of the energy storage and discharge circuit.

Description

Technical Field

[0001] This invention relates to the field of energy storage and discharge technology, and more specifically, to an anti-charging lock-up system for use in laser therapy devices. Background Technology

[0002] Currently, high-power switching power supplies used in laser therapy equipment (such as laser therapy instruments), especially medical-certified high-power switching power supplies, have limited power, commonly 1500W or 3000W. They are difficult to use in scenarios with low average power and high peak power (e.g., peak power above 5000W). Moreover, high-power switching power supplies are expensive. Therefore, more and more energy storage and discharge circuits have been invented and put into use in laser therapy equipment. Existing energy storage and discharge circuits usually use capacitors for energy storage, mainly by directly connecting the capacitor to the power supply. However, in the process of directly charging the capacitor from the power supply, the energy storage time of the energy storage and discharge circuit is usually uncontrollable, which can easily lead to continuous charging of the capacitor, causing capacitor damage and resulting in low reliability of the energy storage and discharge circuit. Summary of the Invention

[0003] This invention provides an anti-charging lock-up system for laser therapy devices to solve the technical problem of low reliability of existing energy storage and discharge circuits, which results in continuous charging of the capacitor and subsequent capacitor damage.

[0004] To achieve the above objectives, the technical solutions adopted in the embodiments of the present invention are as follows: In a first aspect, embodiments of the present invention provide an anti-charging lock-up system for a laser therapy device, comprising: a power input interface, a slow-charging current limiting component, a slow-charging switching device, an energy storage component, an enable control unit, an anti-lock-up switching device, and an anti-lock-up delay component; The power input interface is connected to the first port of the anti-lock-up switch device, the second port of the anti-lock-up switch device is connected to the input terminal of the slow-charge current limiting component, and the output terminal of the slow-charge current limiting component is connected to the first port of the slow-charge switch device. The slow-charge current limiting component is used for current limiting. The second port of the slow-charge switch is connected to the energy storage component, the control terminal of the slow-charge switch is connected to the enable control unit, and the slow-charge switch is in the off state. The enable control unit is used to output a high-level signal to the control terminal of the slow-charge switch device when it receives a signal to start charging, so as to control the first port and the second port of the slow-charge switch device to be turned on, so that the power supply input interface charges the energy storage component through the anti-lock-up switch device, the slow-charge current limiting component and the slow-charge switch device; The control terminal of the anti-lock-up switch is connected to the output terminal of the anti-lock-up delay component, and the input terminal of the anti-lock-up delay component is connected to a DC power supply. When the enable control unit receives a start charging signal, it controls the DC power supply to charge the anti-lock-up delay component. When the energy stored in the anti-lock-up delay component reaches the anti-lock-up voltage threshold, the anti-lock-up delay component outputs a high-level signal to the control terminal of the anti-lock-up switch device, triggering the first port and the second port of the anti-lock-up switch device to disconnect, thereby stopping the power supply input interface from supplying power to the energy storage component through the slow-charge current limiting component and the slow-charge switch device.

[0005] Furthermore, the present invention provides a first possible implementation of the first aspect, wherein the anti-lock-up delay component includes: an anti-lock-up delay resistor and an anti-lock-up delay capacitor; The input terminal of the anti-lock-out delay resistor is connected to an external DC power supply. The output terminal of the anti-lock-out delay resistor is connected to the input terminal of the anti-lock-out delay capacitor and the control terminal of the anti-lock-out switching device. The output terminal of the anti-lock-out delay capacitor is grounded. The first port of the anti-lock-out switching device is connected to the power supply input interface. The second port of the anti-lock-out switching device is connected to the input terminal of the slow-charge current limiting component. When the enable control unit receives a signal to start charging, it controls the DC power supply to charge the anti-lock-up delay capacitor through the anti-lock-up delay resistor. When the energy stored in the anti-lock-up delay capacitor reaches the anti-lock-up voltage threshold, the anti-lock-up delay capacitor outputs a high-level signal to the control terminal of the anti-lock-up switch device, so as to disconnect the first and second ports of the anti-lock-up switch device, thereby stopping the power supply input interface from supplying power to the energy storage component.

[0006] Furthermore, the present invention provides a second possible implementation of the first aspect, wherein the anti-charging lock-up system further includes: a detection unit and a fast charging switch unit; The input terminal of the detection unit is connected to the energy storage component, and the output terminal of the detection unit is connected to the control terminal of the fast charging switch unit and the control terminal of the slow charging switch device; wherein, the detection unit is used to detect the voltage of the energy storage component; The first port of the fast charging switch unit is connected to the power input interface, the second port of the fast charging switch unit is connected to the energy storage component, and the fast charging switch unit is in the off state. The detection unit is used to trigger the first port and the second port of the slow-charge switch to return to the open state and trigger the first port and the second port of the fast-charge switch unit to be turned on when the voltage of the energy storage component is greater than the fast-charge voltage threshold, so that the power supply input interface charges the energy storage component through the fast-charge switch unit.

[0007] Furthermore, the present invention provides a third possible implementation of the first aspect, wherein the anti-charging lock-up system further includes: a load switch unit; The control terminal of the load switch unit is connected to the output terminal of the detection unit, the first port of the load switch unit is connected to the energy storage component, the second port of the load switch unit is used to connect an external load, and the load switch unit is in an open state. The detection unit is used to charge the load switch unit when it detects that the voltage of the energy storage component is greater than a preset voltage threshold. When the energy stored in the load switch unit reaches the power supply voltage threshold, it triggers the first port and the second port of the load switch unit to conduct, so that the energy storage component supplies power to the load through the load switch unit.

[0008] Furthermore, the present invention provides a fourth possible implementation of the first aspect, wherein the anti-charging lock-up system further includes: a slow discharge unit and a discharge switch unit; The enabling control unit is connected to the control terminal of the discharge switch unit. The first port of the discharge switch unit is grounded, the second port of the discharge switch unit is connected to the output terminal of the slow discharge unit, the input terminal of the slow discharge unit is connected to the energy storage component, and the slow discharge unit uses current limiting. The enable control unit is used to output a low-level signal to the control terminal of the discharge switch unit when it receives a signal to stop charging, so as to control the first port and the second port of the discharge switch unit to be turned on, so that the energy storage component releases electrical energy to the discharge switch unit through the slow discharge unit.

[0009] Furthermore, this embodiment of the invention provides a fifth possible implementation of the first aspect, wherein the anti-charging lock-up system further includes: a detection control unit; the detection unit includes: a voltage comparator; The non-inverting input of the voltage comparator is connected to the energy storage component, the inverting input of the voltage comparator is connected to the output of the detection control unit, the output of the voltage comparator is connected to the control terminal of the fast charging switch unit, and the control terminal of the detection control unit is connected to the enable control unit. The enable control unit is used to output a low-level signal to the control terminal of the detection control unit when it receives a signal to stop charging, so that the output terminal of the detection control unit outputs a high-level signal to the inverting input terminal of the voltage comparator. The voltage comparator is used to trigger the first port and the second port of the fast charging switch unit to return to the open state when a high-level signal is received at the inverting input terminal.

[0010] Furthermore, the present invention provides a sixth possible implementation of the first aspect, wherein the anti-charging lock-up system further includes: an auxiliary unit; The auxiliary unit is connected to the power input interface and is used to store voltage when the energy storage component is charging.

[0011] Furthermore, the present invention provides a seventh possible implementation of the first aspect, wherein the anti-charging lock-up system further includes: a protection unit; The input terminal of the protection unit is connected to the power supply input interface, and the output terminal of the protection unit is connected to the first port of the anti-lock-up switch device.

[0012] Furthermore, the present invention provides an eighth possible implementation of the first aspect, wherein the anti-charging lock-up system further includes: a filtering unit; The input terminal of the filtering unit is connected to the power supply input interface, the output terminal of the filtering unit is connected to the first port of the anti-lock-up switch device, and the filtering unit is connected in parallel with the protection unit.

[0013] Furthermore, the present invention provides a ninth possible implementation of the first aspect, wherein the anti-charging lock-up system further includes: an anti-reverse connection unit; The input terminal of the reverse connection protection unit is connected to the power supply input interface, and the output terminal of the reverse connection protection unit is connected to the first port of the anti-lock-up switch device. The reverse connection protection unit is used to turn on when the power input interface is connected to the external power supply in the positive direction, and to turn off when the power input interface is connected to the external power supply in the reverse direction.

[0014] This invention provides an anti-charging lock-up system for a laser therapy device. The system includes: a power input interface, a slow-charging current-limiting component, a slow-charging switch, an energy storage component, an enable control unit, an anti-lock-up switch, and an anti-lock-up delay component. The power input interface is connected to a first port of the anti-lock-up switch; a second port of the anti-lock-up switch is connected to the input terminal of the slow-charging current-limiting component; the output terminal of the slow-charging current-limiting component is connected to the first port of the slow-charging switch; the slow-charging current-limiting component is used for current limiting. The second port of the slow-charging switch is connected to the energy storage component; the control terminal of the slow-charging switch is connected to the enable control unit; the slow-charging switch is in an off state. The enable control unit is used to output a signal to the control terminal of the slow-charging switch when it receives a signal to start charging. A high-level signal is output to control the first and second ports of the slow-charge switch to conduct, so that the power input interface charges the energy storage component through the anti-lock-up switch, the slow-charge current limiting component, and the slow-charge switch. The control terminal of the anti-lock-up switch is connected to the output terminal of the anti-lock-up delay component, and the input terminal of the anti-lock-up delay component is externally connected to a DC power supply. When the enable control unit receives the start-charging signal, it controls the DC power supply to charge the anti-lock-up delay component. When the energy stored in the anti-lock-up delay component reaches the anti-lock-up voltage threshold, the anti-lock-up delay component outputs a high-level signal to the control terminal of the anti-lock-up switch, triggering the first and second ports of the anti-lock-up switch to disconnect, thereby stopping the power input interface from supplying power to the energy storage component through the slow-charge current limiting component and the slow-charge switch. When the energy storage component needs charging, this invention outputs a high-level signal to the control terminal of the slow-charge switch device via the enable control unit, triggering the slow-charge switch device to conduct. This allows the power supply input interface to slowly charge the energy storage component through the slow-charge current limiting component and the slow-charge switch device, preventing excessive current in the charging circuit during charging and avoiding voltage surges across the energy storage component. This reduces the possibility of capacitor damage in the energy storage component. Furthermore, an anti-lock-up switch device is installed between the power supply input interface and the slow-charge current limiting component. When the energy stored in the anti-lock-up delay component reaches the anti-lock-up voltage threshold, it outputs a high-level signal to the control terminal of the anti-lock-up switch device, triggering the anti-lock-up switch device to disconnect. This stops the power supply input interface from slowly charging the energy storage unit through the slow-charge current limiting component and the slow-charge switch device, preventing continuous charging of the energy storage component and thus avoiding capacitor damage. This improves the reliability of the energy storage discharge circuit. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a circuit module for an anti-charging lock-up system provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the overall circuit of an anti-charging lock-up system provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of a unit of an anti-charging lock-up system provided in an embodiment of the present invention. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be described below in conjunction with the accompanying drawings. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments.

[0018] This embodiment provides an anti-charging lock-up system for laser therapy devices. See [link to documentation]. Figure 1 The diagram shows a circuit module schematic of an anti-charging lock-up system, which includes: a power input interface 11, a slow-charge current limiting component 101, a slow-charge switching device M1, an energy storage component 102, an enable control unit 15, an anti-lock-up switching device M14, and an anti-lock-up delay component 103. The power input interface 11 is connected to the first port of the anti-lock switch device M14, the second port of the anti-lock switch device M14 is connected to the input terminal of the slow charge current limiting component 101, and the output terminal of the slow charge current limiting component 101 is connected to the first port of the slow charge switch device M1. The slow charge current limiting component 101 is used for current limiting. The second port of the slow-charge switch device M1 is connected to the energy storage component 102, and the control terminal of the slow-charge switch device M1 is connected to the enable control unit 15. The slow-charge switch device M1 is in the off state. The enable control unit 15 is used to output a high-level signal to the control terminal of the slow charge switch device M1 when it receives a signal to start charging, so as to control the first port and the second port of the slow charge switch device M1 to be connected, so that the power supply input interface 11 charges the energy storage component 102 through the anti-lock switch device M14, the slow charge current limiting component 101 and the slow charge switch device M1. The control terminal of the anti-lock-up switch device M14 is connected to the output terminal of the anti-lock-up delay component 103, and the input terminal of the anti-lock-up delay component 103 is connected to a DC power supply. When the enable control unit 15 receives the start charging signal, it controls the DC power supply to charge the anti-lock-up delay component 103. When the energy stored in the anti-lock-up delay component 103 reaches the anti-lock-up voltage threshold, the anti-lock-up delay component 103 outputs a high-level signal to the control terminal of the anti-lock-up switch device M14, triggering the first port and the second port of the anti-lock-up switch device M14 to disconnect, so as to stop the power supply input interface 11 from supplying power to the energy storage component 102 through the slow charging current limiting component 101 and the slow charging switch device M1. See Figure 2 The diagram shows the overall circuit of an anti-charging lock-up system. The slow-charge current limiting component 101 includes resistors R201, R202, and R203 connected in series. The slow-charge switching device M1 is an NMOS transistor. The energy storage component 102 includes capacitors C203 (a polarized capacitor) and C204 connected in parallel. The anti-lock-up switching device M14 is a PMOS transistor. The power input interface 11 can charge the energy storage component 102 by connecting to the power supply VIN. The power input interface 11 is connected to the first port (i.e., the source of the anti-lock switch device M14) of the anti-lock switch device M14, the second port (i.e., the drain of the anti-lock switch device M14) of the anti-lock switch device is connected to the input terminal (i.e., one end of the resistor R201) of the slow charge current limiting component 101, and the output terminal (i.e., one end of the resistor R203) of the slow charge current limiting component 101 is connected to the first port (i.e., the drain of the slow charge switch device M1). By setting the slow charge current limiting component 101, the current in the charging line is limited by the resistors R201, R202 and R203 connected in series, so as to avoid voltage change of the energy storage component 102 during the charging process and avoid damage to capacitors C203 and C204. The second port of the slow-charge switch device M1 (i.e., the source of the slow-charge switch device M1) is connected to the energy storage component 102 (i.e., the anode of capacitor C203 and one end of capacitor C204). The control terminal of the slow-charge switch device M1 (i.e., the gate of the slow-charge switch device M1) is connected to the enable control unit 15. The slow-charge switch device M1 is an NMOS transistor. The slow-charge switch device M1 is in the off state when the gate does not receive a high-level signal. The enable control unit 15 is used to output a high-level signal to the gate of the slow charge switch device M1 when it receives a signal to start charging, so as to control the drain and source of the slow charge switch device M1 to be turned on, so that the power supply input interface 11 charges the energy storage component 102 through the slow charge current limiting component 101 and the slow charge switch device M1. The control terminal (i.e., the gate of the anti-lock-up switch device M14) is connected to the output terminal of the anti-lock-up delay component 103, and the input terminal of the anti-lock-up delay component 103 is externally connected to the DC power supply VCC. When the enable control unit 15 receives the start charging signal, it controls the DC power supply VCC connected to the input terminal of the anti-lock-up delay component 103 to charge the anti-lock-up delay component 103. When the energy stored in the anti-lock-up delay component 103 reaches the anti-lock-up voltage threshold, the anti-lock-up delay component 103 outputs a high-level signal to the gate of the anti-lock-up switch device M14. Since the anti-lock-up switch device M14 is a PMOS transistor, the anti-lock-up switch device M14 is disconnected when the gate receives a high-level signal, so that the power supply voltage VIN connected to the power supply input interface 11 cannot charge the energy storage component 102 through the slow charging current limiting component 101 and the slow charging switch device M1. See Figure 3 The diagram shows a unit schematic of an anti-charging lock-up system. The anti-charging lock-up system includes: a power input interface 11, a slow charging unit 12, a slow charging switch unit 13, an energy storage unit 14, an enable control unit 15, and an anti-charging lock-up unit 22. The power input interface 11 is connected to the first port of the anti-charging lock-up unit 22 (i.e., the source of the anti-lock-up switch device M14), the second port of the anti-charging lock-up unit 22 (i.e., the drain of the anti-lock-up switch device M14) is connected to the input terminal of the slow charging unit 12 (i.e., one end of the resistor R201), the control terminal of the anti-charging lock-up unit 22 (i.e., the input terminal of the anti-lock-up delay component 103) is used to connect an external DC power supply, the output terminal of the slow charging unit 12 (i.e., one end of the resistor R203) is connected to the first port of the slow charging switch unit 13 (i.e., the drain of the slow charging switch device M1), the second port of the slow charging switch unit 13 (i.e., the source of the slow charging switch device M1) is connected to the energy storage unit 14 (i.e., the anode of the capacitor C203 and one end of the capacitor C204), and the control terminal of the slow charging switch unit 13 (i.e., the gate of the slow charging switch device M1) is connected to the enable control unit 15. like Figure 2As shown, the slow-charging unit 12 includes: a slow-charging current limiting component 101 (i.e., resistors R201, R202, and R203 connected in series); the slow-charging switching unit 13 includes: resistors R204, R205, R206, R207, and R208; capacitors C201 and C202; a first slow-charging control switching device M2 (an N-type field-effect transistor (NMOS transistor)); a second slow-charging control switching device M3 (a P-type field-effect transistor (PMOS transistor)); and a third slow-charging control switching device M4. The system includes a control switching device M4 (an N-type field-effect transistor (NMOS transistor)) and a slow-charge switching device M1 (an N-type field-effect transistor (NMOS transistor)); the energy storage unit 14 includes: an energy storage component 102 (i.e., capacitors C203 and C204 connected in parallel); the enable control unit 15 includes resistors R209 and R210 and capacitor C205; the anti-charge lock-up unit 22 includes: an anti-lock-up delay component 103 and an anti-lock-up switching device M14; wherein, the energy storage unit 14 may be further connected in parallel with multiple capacitors to increase the energy storage capacity; The power input interface 11 is connected to the power supply VIN, and the power input interface 11 is connected to the source (PMOS pin S) of the anti-lock switch device M14. The drain (PMOS pin D) of the anti-lock switch device M14 is connected to one end of the resistor R201 (as the input terminal of the slow charging unit 12). The other end of the resistor R201 is connected to one end of the resistor R202. The other end of the resistor R202 is connected to one end of the resistor R203. The other end of the resistor R203 (as the output terminal of the slow charging unit 12) is connected to the drain (NMOS pin D) of the slow charging switch device M1. The source (NMOS pin S) of the slow charging switch device M1 is connected to the anode of the capacitor C203 and one end of the capacitor C204. The cathode of the capacitor C203 and the other end of the capacitor C204 are connected in parallel and then grounded. The gate (pin G of the NMOS transistor) of the slow-charge switch M1 is connected to one end of resistor R207, and the other end of resistor R207 is connected to one end of capacitor C202, one end of resistor R206, and the drain (pin D of the PMOS transistor) of the third slow-charge control switch M4. The other end of capacitor C202 and the other end of resistor R206 are connected in parallel and then grounded. The source (pin S of the PMOS transistor) of the third slow-charge control switch M4 is connected to one end of resistor R205 and then externally connected to the DC power supply VCC. The gate (pin G of the PMOS transistor) of the third slow-charge control switch M4 is connected to the drain (pin D of the PMOS transistor) of the third slow-charge control switch M4. The drain of the first slow-charge control switch M2 (pin D of the NMOS transistor) and the other end of the resistor R205 are connected. The source of the first slow-charge control switch M2 (pin S of the NMOS transistor) is grounded. The gate of the first slow-charge control switch M2 (pin G of the NMOS transistor) is connected to one end of the resistor R204, one end of the capacitor C201, and the drain of the second slow-charge control switch M3 (pin D of the NMOS transistor). The other end of the capacitor C201 is grounded. The other end of the resistor R204 is connected to one end of the resistor R209 and one end of the resistor R210 in the enable control unit 15. The other end of resistor R209 is connected to DC power supply VCC, and the other end of resistor R210 is connected to one end of capacitor C205. The other end of capacitor C205 is grounded. When the enable control unit 15 receives a signal to start charging the energy storage unit 14, the DC power supply VCC in the enable control unit 15 outputs a high-level signal to the gate of the first slow-charge control switch device M2 through resistor R204. Since the first slow-charge control switch device M2 is an NMOS transistor, it turns on when its gate receives a high-level signal. At this time, the gate of the third slow-charge control switch device M4 is grounded through the drain and source of the first slow-charge control switch device M2. When the gate of the third slow-charge control switch device M4 receives a low-level signal, since the third slow-charge control switch device M4 is a PMOS transistor, it turns on when its gate receives a low-level signal. At this time, the DC power supply VCC in the slow-charge switch unit 13 outputs a high-level signal to the gate of the slow-charge switch device M1 through the source and drain of the third slow-charge control switch device M4. Since the slow-charge switch M1 is an NMOS transistor, it turns on when its gate receives a high-level signal. At this time, the power supply VIN can charge the energy storage unit 14 (i.e., capacitors C203 and C204) through resistors R201, R202, R203, and the drain and source of the slow-charge switch M1. Among them, resistors R201, R202, R203, R204, R205, R206, R207, R208, R209, R210, and capacitors C201, C202, and C205 together play the roles of voltage regulation, current limiting, clamping, and filtering. The gate (pin G of the PMOS transistor) of the anti-lock-up switching device M14 is connected to the anti-lock-up delay component 103. The output terminal of the anti-lock-up delay component 103 is connected to the output terminal of the anti-lock-up delay component 103, and the input terminal of the anti-lock-up delay component 103 is used to connect an external DC power supply VCC. When the enable control unit 15 receives the start charging signal, it controls the DC power supply VCC in the anti-charging lock-up unit 22 to charge the anti-lock-up delay component 103. When the energy stored in the anti-lock-up delay component 103 reaches the anti-lock-up voltage threshold, the anti-lock-up delay component 103 outputs a high-level signal to the gate of the anti-lock-up switch device M14. Since the anti-lock-up switch device M14 is a PMOS transistor, the anti-lock-up switch device M14 is disconnected when the gate receives a high-level signal, so that the power supply VIN connected to the power supply input interface 11 cannot charge the energy storage unit 14 through the slow charging unit 12 and the slow charging switch unit 13.

[0019] The anti-charging lock-up system provided in this embodiment of the invention, when the energy storage component needs to be charged, outputs a high-level signal to the control terminal of the slow-charging switch device by the enable control unit, triggering the slow-charging switch device to conduct. This allows the power supply input interface to slowly charge the energy storage component through the slow-charging current limiting component and the slow-charging switch device, avoiding excessive current in the charging circuit during the charging process, which could cause sudden voltage changes across the energy storage component and reduce the possibility of capacitor damage in the energy storage component. Furthermore, an anti-lock-up switch device is provided between the power supply input interface and the slow-charging current limiting component. When the energy stored in the anti-lock-up delay component reaches the anti-lock-up voltage threshold, it outputs a high-level signal to the control terminal of the anti-lock-up switch device to trigger the anti-lock-up switch device to disconnect. This stops the power supply input interface from slowly charging the energy storage unit through the slow-charging current limiting component and the slow-charging switch device, preventing continuous charging of the energy storage component and thus avoiding capacitor damage. This improves the reliability of the energy storage discharge circuit.

[0020] In one embodiment, such as Figure 2 As shown, the anti-lock-up delay component 103 provided in this embodiment includes an anti-lock-up delay resistor R234 and an anti-lock-up delay capacitor C217; The input terminal of the anti-lock-out delay resistor R234 is connected to an external DC power supply. The output terminal of the anti-lock-out delay resistor R234 is connected to the input terminal of the anti-lock-out delay capacitor C217 and the control terminal of the anti-lock-out switch device M14. The output terminal of the anti-lock-out delay capacitor C217 is grounded. The first port of the anti-lock-out switch device M14 is connected to the power supply input interface 11, and the second port of the anti-lock-out switch device M14 is connected to the input terminal of the slow charging current limiting component 101. When the enable control unit 15 receives the start charging signal, it controls the DC power supply to charge the anti-lock-out delay capacitor C217 through the anti-lock-out delay resistor R234. When the energy stored in the anti-lock-out delay capacitor C217 reaches the anti-lock-out voltage threshold, the anti-lock-out delay capacitor C217 outputs a high-level signal to the control terminal of the anti-lock-out switch device M14, so that the gate and source of the anti-lock-out switch device M14 are disconnected, thereby stopping the power supply input interface 11 from supplying power to the energy storage component 102. like Figure 2 As shown, the anti-charging lock-up unit 22 also includes: diode D2, resistor R235 and resistor R236; The anode of diode D2 is used to connect to the external DC power supply VCC. The cathode of diode D2 is connected to one end of the anti-lock-up delay resistor R234. The other end of the anti-lock-up delay resistor R234 is connected to one end of resistor R235, one end of resistor R236, and the anode of anti-lock-up delay capacitor C217. The other end of resistor R235 is connected to the cathode of anti-lock-up delay capacitor C217 and then grounded. The other end of resistor R236 is connected to the gate (pin G of PMOS transistor) of anti-lock-up switching device M14. The source (pin S of PMOS transistor) of anti-lock-up switching device M14 is connected to the power input interface 11. The drain (pin D of PMOS transistor) of anti-lock-up switching device M14 is connected to the energy storage unit 14 (the anode of polarized capacitor C203 and one end of capacitor C204). When the enable control unit 15 receives the start charging signal, it controls the DC power supply VCC (which can be set to 60V) in the anti-charging lock-up unit 22 to charge the anti-lock-up delay capacitor C217 via the anti-lock-up delay resistor R234. Only when the energy stored in the anti-lock-up delay capacitor C217 reaches the anti-lock-up voltage threshold (which can be set to 48V) will the anti-lock-up delay capacitor C217 output a high-level signal to the gate of the anti-lock-up switching device M14. Since the anti-lock-up switching device M14 is a PMOS transistor, the anti-lock-up... When the switching device M14 receives a high-level signal at its gate, it disconnects, thereby stopping the power supply VIN connected to the power input interface 11 from charging the energy storage component 102 through the slow-charge current limiting component 101 and the slow-charge switching device M1. This avoids the problem of continuous charging (or repeated charging) of the energy storage component 102, which could damage capacitors C203 and C204 in the energy storage component 102. Furthermore, the anti-lock-up delay resistor R234 and the anti-lock-up delay capacitor C217 in the anti-lock-up delay component 103 satisfy the following relationship: ; in, To prevent lock-up, the resistance value of delay resistor R234 should be adjusted. The capacitance value of the delay capacitor C217 to prevent lock-up; To reduce the resistance value of resistor R201 in the current limiting component 101, To reduce the resistance value of resistor R202 in the current limiting component 101, To mitigate the resistance value of resistor R203 in the current limiting component 101, This refers to the capacitance value of capacitor C203 in energy storage component 102; Based on the resistance value of the anti-lock-up delay resistor R234 and the capacitance value of the anti-lock-up delay capacitor C217, the time constant corresponding to the anti-lock-up delay component 103 can be calculated. The time constant corresponding to the anti-lock-up delay component 103 satisfies the above relationship with the time constant corresponding to the slow charging process, ensuring that the anti-lock-up switch device M14 returns to the off state after the energy storage component 102 is completed, avoiding the power input interface 11 from continuously charging the energy storage component 102, and reducing the possibility of capacitor damage in the energy storage component 102; wherein, diode D2, resistor R235, and resistor R236 together play the roles of current limiting, clamping, and reverse connection protection.

[0021] In one embodiment, such as Figure 3 As shown, the anti-charging lock-up system provided in this embodiment also includes: a detection unit 16 and a fast charging switch unit 17; The input terminal of the detection unit 16 is connected to the energy storage component 102, and the output terminal of the detection unit 16 is connected to the control terminal of the fast charging switch unit 17 and the control terminal of the slow charging switch device; wherein, the detection unit 16 is used to detect the voltage of the energy storage component 102; The first port of the fast charging switch unit 17 is connected to the power input interface 11, the second port of the fast charging switch unit 17 is connected to the energy storage component 102, and the fast charging switch unit 17 is in the off state. The detection unit 16 is used to trigger the first port and the second port of the slow charge switch device to return to the open state and trigger the first port and the second port of the fast charge switch unit 17 to be turned on when the voltage of the energy storage component 102 is greater than the fast charge voltage threshold, so that the power supply input interface 11 charges the energy storage component 102 through the fast charge switch unit 17. The detection unit 16 is used to trigger the first port and the second port of the slow charging switch unit 13 to return to the disconnected state and trigger the first port and the second port of the fast charging switch unit 17 to be turned on when the voltage of the energy storage unit 14 (i.e., the energy storage component 102) is greater than the preset voltage threshold, so that the power supply input interface 11 charges the energy storage component 102 through the fast charging switch unit 17. like Figure 2 As shown, the fast charging switch unit 17 includes: a fast charging switch device M5 (an N-type field-effect transistor (NMOS transistor)); the input terminal of the detection unit 16 is connected to the energy storage component 102 (i.e., capacitors C203 and C204), and the output terminal of the detection unit 16 is connected to the control terminal of the fast charging switch unit 17 (i.e., the gate of the fast charging switch device M5) and the control terminal of the slow charging switch unit 13 (i.e., the gate of the slow charging switch device M1). The detection unit 16 is used to collect the voltage stored in the energy storage component 102 in real time and compare the collected voltage of the energy storage component 102 with a preset voltage threshold. The first port of the fast charging switch unit 17 (i.e. the drain of the fast charging switch device M5) is connected to the power input interface 11, and the second port of the fast charging switch unit 17 (i.e. the source of the fast charging switch device M5) is connected to the energy storage component 102 (i.e. capacitors C203 and C204). The fast charging switch unit 17 is in the off state. When the power input interface 11 charges the energy storage component 102 through the slow charging unit 12, the input terminal of the detection unit 16 samples the voltage stored in the energy storage component 102 in real time and compares the voltage of the energy storage component 102 with the preset voltage threshold. When the voltage of the energy storage component 102 is greater than the preset voltage threshold, it proves that the energy stored in the energy storage component 102 meets the requirements. The detection unit 16 triggers the first port and the second port of the slow charging switch unit 13 (i.e., the source and drain of the slow charging switch device M1) to return to the open state and triggers the first port and the second port of the fast charging switch unit 17 (i.e., the source and drain of the fast charging switch device M5) to be turned on, switching to the fast energy storage circuit, so that the power supply VIN charges the energy storage component 102 through the power input interface 11 and the fast charging switch unit 17. like Figure 2As shown, the fast charging switch unit 17 also includes: resistors R218, R219, R220, and R221; capacitors C210 and C211; a first fast charging control switch device M6 (an N-type field-effect transistor (NMOS transistor)); and a second fast charging control switch device M7 (a P-type field-effect transistor (PMOS transistor)). The anode of capacitor C203, one end of capacitor C204, and the source of fast charging switch device M5 (pin S of the NMOS transistor) are connected to the input terminal of the detection unit 16. The output terminal of the detection unit 16 is connected to one end of resistor R218 and one end of resistor R208. The other end of resistor R208 is connected to the gate of the second slow charge control switch device M3, and the source of the second slow charge control switch device M3 is grounded. When the voltage of the energy storage component 102 detected at the input terminal of the detection unit 16 is greater than a preset voltage threshold, the output terminal of the detection unit 16 outputs a high-level signal to the gate of the second slow-charge control switch device M3 through resistor R208. Since the second slow-charge control switch device M3 is an NMOS transistor, it turns on when its gate receives a high-level signal. At this time, the gate of the first slow-charge control switch device M2 is grounded through the source and drain of the second slow-charge control switch device M3. When the gate of the first slow-charge control switch device M2 receives a low-level signal, it turns off when its gate receives a low-level signal, since it is an NMOS transistor. The DC power supply VCC in the slow charging switch unit 13 outputs a high-level signal to the gate of the third slow charging control switch device M4 through resistor R205. The third slow charging control switch device M4 is a PMOS transistor. When the gate of the third slow charging control switch device M4 receives a high-level signal, it is turned off. At this time, the gate of the slow charging switch device M1 is grounded through resistor R206. When the gate of the slow charging switch device M1 receives a low-level signal, since the slow charging switch device M1 is an NMOS transistor, it is turned off when the gate receives a low-level signal. At this time, the power supply VIN stops slow charging to the energy storage component 102 through resistors R201, R202, R203, and the drain and source of the slow charging switch device M1. The other end of resistor R218 is connected to one end of capacitor C210 and the gate of the first fast-charging control switch M6. The other end of capacitor C210 is grounded. The source (pin S of the NMOS transistor) of the first fast-charging control switch M6 is grounded. The drain (pin D of the NMOS transistor) of the first fast-charging control switch M6 is connected to one end of resistor R219 and the gate (pin G of the PMOS transistor). The other end of resistor R219 is connected to the gate of the second fast-charging control switch M7. After the source is connected, an external DC power supply VCC is connected. The drain of the second fast charging control switch M7 (PMOS pin D) is connected to one end of resistor R221, one end of capacitor C211, and one end of resistor R220. The other end of capacitor C211 is connected to the other end of resistor R220 and then grounded. The other end of resistor R221 is connected to the gate of fast charging switch M5 (NMOS pin G). The drain of fast charging switch M5 (NMOS pin D) is connected to the power supply input interface 11. When the voltage of the energy storage component 102 detected at the input terminal of the detection unit 16 is greater than a preset voltage threshold, the output terminal of the detection unit 16 outputs a high-level signal to the gate of the first fast-charging control switch device M6 through resistor R218. Since the first fast-charging control switch device M6 is an NMOS transistor, it turns on when its gate receives a high-level signal. At this time, the gate of the second fast-charging control switch device M7 is grounded through the drain and source of the first fast-charging control switch device M6. The gate of the second fast-charging control switch device M7 receives the high-level signal. Since the second fast-charging control switch device M7 is a PMOS transistor, the second fast-charging control switch... When device M7 receives a low-level signal at its gate, it turns on. At this time, the DC power supply VCC in the fast charging switch unit 17 outputs a high-level signal to the gate of the fast charging switch device M5 through resistor R221. Since the fast charging switch device M5 is an NMOS transistor, it turns on when its gate receives a high-level signal. At this time, the power supply VIN connected to the power supply input interface 11 can directly fast charge the energy storage component 102 through the fast charging switch device M5. Among them, resistors R218, R219, R220, R221, capacitors C210 and C211 together play the roles of voltage regulation, current limiting, clamping and filtering. When the energy storage component 102 is fast-charged through the fast-charging switch unit 17, the detection unit 16 will control the slow-charging switch unit to open and stop the slow-charging of the energy storage component 102. Furthermore, no current-limiting resistor is set on the fast-charging line, and the power supply VIN can charge the energy storage component 102 at the fastest speed through the fast-charging switch device M5 to ensure that the energy storage component 102 always maintains sufficient energy.

[0022] In one embodiment, such as Figure 3As shown, the anti-charging lock-up system provided in this embodiment also includes: a load switch unit 18; The control terminal of the load switch unit 18 is connected to the output terminal of the detection unit 16. The first port of the load switch unit 18 is connected to the energy storage component 102. The second port of the load switch unit 18 is used to connect an external load. The load switch unit 18 is in the off state. The detection unit 16 is used to charge the load switch unit 18 when the voltage of the energy storage component 102 is detected to be greater than a preset voltage threshold. When the energy stored in the load switch unit 18 reaches the power supply voltage threshold, the first port and the second port of the load switch unit 18 are triggered to conduct, so that the energy storage component 102 supplies power to the load through the load switch unit 18. like Figure 2 As shown, the load switching unit 18 includes: a power supply delay component and a power supply switching device M8 (an NMOS transistor); the input terminal of the power supply delay component is connected to the output terminal of the detection unit 16 as the control terminal of the load switching unit 18, the output terminal of the power supply delay component is connected to the gate (i.e., pin G of the NMOS transistor) of the power supply delay component, the drain (i.e., pin D of the NMOS transistor) of the power supply switching device M8 is connected to the energy storage component 102 (i.e., energy storage unit 14) as the first port of the load switching unit 18, and the source (i.e., pin S of the NMOS transistor) of the power supply switching device M8 is used as the second port of the load switching unit 18 for connecting an external load VLOAD; The detection unit 16 is used to charge the power supply delay component in the load switch unit 18 when the voltage of the energy storage component 102 is greater than the preset voltage threshold. When the energy storage of the power supply delay component reaches the power supply voltage threshold, the power supply delay component outputs a high-level signal to the gate of the power supply switch device M8. Since the power supply switch device M8 is an NMOS transistor, the power supply switch device M8 is turned on when the gate receives a high-level signal. The energy storage component 102 can supply power to the external load VLOAD through the drain and source of the power supply switch device M8. like Figure 2 As shown, the load switching unit 18 further includes: resistors R222, R223, R224, R225, and R226; capacitors C212 and C213; a first power supply control switching device M9 (an NMOS transistor); and a second power supply control switching device M10 (a PMOS transistor). The power supply delay component is composed of resistor R223 and capacitor C212. The output terminal of detection unit 16 is connected to one end of resistor R222 and one end of resistor R223. The other end of resistor R222 is grounded. The other end of resistor R223 is connected to one end of capacitor C212 and the gate (pin G of NMOS transistor) of the first power supply control switch device M9. The other end of capacitor C212 is grounded. The source (pin S of NMOS transistor) of the first power supply control switch device M9 is grounded. The drain (pin D of NMOS transistor) of the first power supply control switch device M9 is connected to one end of resistor R224 and the gate (pin G of PMOS transistor). The source (pin D of PMOS transistor) of the second power supply control switch device M10 is connected to one end of resistor R224 and the gate (pin G of PMOS transistor). The S-tube pin S) is connected to the other end of resistor R224 and then connected to an external DC power supply. The drain of the second power supply control switch M10 (PMOS pin D) is connected to one end of capacitor C213, one end of resistor R225, and one end of resistor R226. The other end of resistor R226 is connected to the gate of power supply switch M8 (NMOS pin G). The drain of power supply switch M8 (i.e., NMOS pin D) is connected to the first port of load switch unit 18 and energy storage unit 14. The source of power supply switch M8 (i.e., NMOS pin S) is used as the second port of load switch unit 18 for connecting an external load VLOAD. When the voltage of the energy storage unit 14 detected by the detection unit 16 is greater than the preset voltage threshold, the output terminal of the detection unit 16 releases a high-level signal to the capacitor C212 through the resistor R223, causing the capacitor C212 to charge. When the energy stored in the capacitor C212 reaches the power supply voltage threshold, the capacitor C212 outputs a high-level signal to the gate of the first power supply control switch device M9. Since the first power supply control switch device M9 is an NMOS transistor, it conducts when its gate receives a high-level signal. At this time, the gate of the second power supply control switch device M10 passes through the first power supply control switch device M10. The drain and source of M9 are grounded. The gate of the second power supply control switch M10 receives a low-level signal. Since the second power supply control switch M10 is a PMOS transistor, it turns on when the gate receives a low-level signal. At this time, the DC power supply VCC in the load switch unit 18 outputs a high-level signal to the gate of the power supply switch M8 through resistor R226. Since the power supply switch M8 is an NMOS transistor, it turns on when the gate receives a high-level signal. At this time, the energy storage unit 14 can directly provide power to the load through the power supply switch M8. In the load switch unit 18, a power supply delay component is formed by resistor R223 and capacitor C212. When the voltage of the energy storage unit 14 detected by the detection unit 16 is greater than a preset voltage threshold, the detection unit 16 outputs a high-level signal to capacitor C212 to charge capacitor C212. Only when the energy stored in capacitor C212 reaches the power supply voltage threshold will capacitor C212 output a high-level signal to trigger the power supply switch device M8 to conduct, so that the energy storage unit 14 can provide power to the load through the power supply switch device M8. The resistor R223 and capacitor C212 in the power supply delay component satisfy the following relationship: ; in, Here is the resistance value of resistor R223 in the power supply delay component. The capacitance value of capacitor C212 in the power supply delay component; The time constant corresponding to the power supply delay component can be calculated based on the resistance value of resistor R223 and the capacitance value of capacitor C212. The time constant corresponding to the slow charging process can be calculated based on the resistance value of the resistor in the slow charging unit 12 and the capacitance value of a certain capacitor in the energy storage unit 14. The time constant corresponding to the power supply delay component and the time constant corresponding to the slow charging process satisfy the above relationship, ensuring that the energy storage unit 14 can only connect to the load to supply power after the slow charging is completed. This ensures that the voltage stored in the energy storage unit 14 meets the requirements for powering large loads and avoids the situation where the energy storage unit 14 can only supply power to small loads due to incomplete energy storage. Among them, resistors R222, R224, R225, R226 and capacitor C213 together play the roles of voltage stabilization, current limiting, clamping and filtering.

[0023] In one embodiment, such as Figure 3 As shown, the anti-charging lock-up system provided in this embodiment also includes: a slow discharge unit 19 and a discharge switch unit 20; The enable control unit 15 is connected to the control terminal of the discharge switch unit 20. The first port of the discharge switch unit 20 is grounded. The second port of the discharge switch unit 20 is connected to the output terminal of the slow discharge unit 19. The input terminal of the slow discharge unit 19 is connected to the energy storage component 102. The slow discharge unit 19 uses current limiting. The enable control unit 15 is used to output a low-level signal to the control terminal of the discharge switch unit 20 when it receives a signal to stop charging, so as to control the first port and the second port of the discharge switch unit 20 to be connected, so that the energy storage component 102 releases electrical energy to the discharge switch unit 20 through the slow discharge unit 19. The discharge switch unit 20 includes: a discharge switch device M11 (a PMOS transistor); an enable control unit 15 connected to the control terminal of the discharge switch unit 20 (i.e., the gate of the discharge switch device M11); a first port of the discharge switch unit 20 (i.e., the drain of the discharge switch device M11) grounded; a second port of the discharge switch unit 20 (i.e., the source of the discharge switch device M11) connected to the output terminal of the slow discharge unit 19; an input terminal of the slow discharge unit 19 connected to the energy storage component 102 (energy storage unit 14); and the slow discharge unit 19 uses current limiting. The enable control unit 15 is used to output a low-level signal to the control terminal (i.e., the gate of the discharge switch device M11) of the discharge switch unit 20 when it receives a signal to stop charging. Since the discharge switch device M11 is a PMOS transistor, the discharge switch device M11 is turned on when the gate receives a low-level signal (i.e., the drain and source of the discharge switch device M11 are turned on), so that the energy storage component 102 releases electrical energy to the ground through the slow discharge unit 19 and the discharge switch device M11. like Figure 2 As shown, the slow discharge unit 19 includes: resistors R227, R228 and R229 connected in series; the discharge switch unit 20 also includes: resistors R230, R231 and R232, capacitors C214 and C215 and discharge control switch device M12 (an NMOS transistor). One end of resistor R230 is connected to the line between resistors R209 and R210 in the enable control unit 15. The other end of resistor R230 is connected to one end of capacitor C214 and the gate (pin G of the NMOS transistor) of discharge control switch device M12. The other end of capacitor C214 is grounded. The drain (pin D of the NMOS transistor) of discharge control switch device M12 is used to connect to an external DC power supply VCC. The source (pin S of the NMOS transistor) of discharge control switch device M12 is connected to one end of resistor R231 and one end of resistor R232. The other end of resistor R232 is connected to one end of capacitor C215 and the gate (pin G of the NMOS transistor). The gate of the switching device M11 (PMOS pin G) is connected, the other end of capacitor C215 and the other end of resistor R231 are connected to the drain of the discharge switching device M11 (PMOS pin D), the drain of the discharge switching device M11 is grounded, the source of the discharge switching device M11 (PMOS pin S) is connected to one end of resistor R229, the other end of resistor R229 is connected to one end of resistor R228, the other end of resistor R228 is connected to one end of resistor R227, and the other end of resistor R227 is connected to the energy storage unit 14 (the anode of polarized capacitor C203 and one end of capacitor C204). When the enable control unit 15 receives a signal to stop charging and start discharging, the enable control unit 15 outputs a low-level signal to the gate of the first slow charge control switch device M2 through resistor R204 to control the slow charge switch device M1 to remain in the off state. When the enable control unit 15 receives the start charging signal, it outputs a high-level signal to the gate of the discharge control switch device M12 through resistor R230. Since the discharge control switch device M12 is an NMOS transistor, it is in the on state. At this time, the DC power supply VCC in the discharge switch unit 20 outputs a high-level signal to the gate of the discharge switch device M11 through the drain and source of the discharge control switch device M12. Since the discharge switch device M11 is a PMOS transistor, it is turned off when the gate receives a high-level signal. Therefore, when the enable control unit 15 receives the start charging signal, the discharge switch device M11 remains in the off state to avoid accidental discharge. When the enable control unit 15 receives a signal to stop charging and start discharging, it outputs a low-level signal to the gate (pin G of the NMOS transistor) of the discharge control switch device M12 through resistor R230. Since the discharge control switch device M12 is an NMOS transistor, it is in the off state. At this time, the gate of the discharge switch device M11 is grounded through resistors R231 and R232. The gate of the discharge switch device M11 receives a low-level signal. The OS transistor and the discharge switch M11 are turned on when the gate receives a low-level signal. Therefore, when the enable control unit 15 receives the signal to stop charging and start discharging, the discharge switch M11 remains on. The energy storage unit 14 releases electrical energy to the ground through the slow discharge unit 19 and the discharge switch M11. Among them, resistors R227, R228, R229, R230, R231, R232, capacitors C214 and C215 together play the roles of voltage regulation, current limiting, clamping and filtering.

[0024] In one embodiment, such as Figure 3 As shown, the anti-charging lock-up system provided in this embodiment also includes: a detection control unit 21; the detection unit 16 includes: a voltage comparator U1; The non-inverting input of voltage comparator U1 is connected to energy storage component 102, the inverting input of voltage comparator U1 is connected to the output of detection control unit 21, the output of voltage comparator U1 is connected to the control terminal of fast charging switch unit 17, and the control terminal of detection control unit 21 is connected to enable control unit 15. The enable control unit 15 is used to output a low-level signal to the control terminal of the detection control unit 21 when it receives a signal to stop charging, so that the output terminal of the detection control unit 21 outputs a high-level signal to the inverting input terminal of the voltage comparator U1; Voltage comparator U1 is used to trigger the first port and the second port of fast charging switch unit 17 to return to the open state when a high-level signal is received at the inverting input terminal; like Figure 2 As shown, the detection control unit 21 includes a detection switching device M13 (a PMOS transistor); the non-inverting input of the voltage comparator U1 is connected to the energy storage component 102 (energy storage unit 14), the inverting input of the voltage comparator U1 is connected to the output of the detection control unit 21 (the drain of the detection switching device M13), the output of the voltage comparator is connected to the control terminal of the fast charging switch unit 17 and the control terminal of the slow charging switch unit 13, the control terminal of the detection control unit 21 (the gate of the detection switching device M13) is connected to the enable control unit 15, and the source of the detection switching device M13 is used to connect to an external DC power supply; The enable control unit 15 is used to output a low-level signal to the gate of the detection switch device M13 when it receives a signal to stop charging. Since the detection switch device M13 is a PMOS transistor, the detection switch device M13 is turned on when it receives a low-level signal at the gate. At this time, the DC power supply VCC in the detection control unit 21 outputs a high-level signal to the inverting input terminal of the voltage comparator U1 through the detection switch device M13. After receiving a high-level signal at the inverting input of voltage comparator U1, the voltage of energy storage unit 14 detected by the non-inverting input of voltage comparator U1 can no longer be greater than the high-level signal at the inverting input. Therefore, the output of voltage comparator U1 outputs a low-level signal to the gate of the first fast-charging control switch M6 to trigger the fast-charging switch M5 to open, so that the power supply VIN connected to the power supply input interface 11 can no longer charge the energy storage component 102 through the fast-charging switch M5. like Figure 2 As shown, the detection control unit 21 also includes: resistor R233 and capacitor C216; the detection unit 16 also includes: resistors R211, R212, R213, R214, R215, R216, R217, capacitors C206, C207, C208, C209, a precision voltage regulator IC201, an NPN transistor Q201, and a diode D1; The gate (PMOS pin G) of the detection switch M13 is connected between resistor R210 and capacitor C205. The source (PMOS pin S) of the detection switch M13 is used to connect to the external DC power supply VCC. The drain (PMOS pin D) of the detection switch M13 is connected to one end of resistor R233, one end of capacitor C216, and the anode of diode D1. The other end of resistor R233 and the other end of capacitor C216 are connected to ground. The cathode of diode D1 is connected to one end of resistor R211 and the inverting input terminal (pin 2 of voltage comparator U1). The other end of resistor R211 is connected to one end of resistor R212, one end of capacitor C206, pins 1 and 2 of precision voltage regulator IC201, and one end of resistor R213. The other end of resistor R212, the other end of capacitor C206, and pin 3 of precision voltage regulator IC201 are connected to ground. The other end of resistor R213 is used to connect to the external DC power supply VCC. One end of resistor R214 is connected to the anode of capacitor C203 and one end of capacitor C204. The other end of resistor R214 is connected to one end of resistor R215, one end of capacitor C207, and one end of resistor R216. The other end of resistor R215 is connected to the other end of capacitor C207 and then grounded. The other end of resistor R216 is connected to the non-inverting input terminal of voltage comparator U1 (pin 3 of voltage comparator U1). The power output terminal (pin 4 of voltage comparator U1) of voltage comparator U1 is grounded. The power input terminal (pin 8 of voltage comparator U1) of voltage comparator U1 is connected to the DC power supply VCC, one end of capacitor C208, one end of capacitor C209, one end of resistor R217, and the collector of NPN transistor Q201 (pin C of NPN transistor Q201). The other end of capacitor C208 is connected to the other end of capacitor C209 and then grounded. The other end of resistor R217 is connected to the output terminal (pin 1 of voltage comparator U1). Pin 1 of voltage comparator U1 is connected to the base of NPN transistor Q201 (pin B of NPN transistor Q201). The emitter of NPN transistor Q201 (pin E of NPN transistor Q201) is connected to resistor R208 in slow charging switch unit 13, resistor R218 in fast charging switch unit 17, and resistor R223 in load switch unit 18. The power input terminal of voltage comparator U1 is externally connected to a DC power supply VCC to provide the operating voltage for voltage comparator U1, enabling it to operate continuously. When the enable control unit 15 receives a signal to start charging, it outputs a high-level signal to the gate of the detection switch device M13 through resistors R209 and R210. Since the detection switch device M13 is a PMOS transistor, it disconnects when its gate receives a high-level signal. At this time, the reference voltage at the inverting input terminal of voltage comparator U1 is obtained by the voltage regulation of the precision voltage regulator IC201. The non-inverting input terminal of voltage comparator U1 samples the voltage stored in energy storage unit 14 in real time. When the output terminal of voltage comparator U1 outputs a high-level signal, the voltage stored in energy storage unit 14 detected by its non-inverting input terminal satisfies the following relationship: ; in, The voltage stored in energy storage unit 14 is detected at the non-inverting input terminal. This is the resistance value of resistor R215. The resistance value of resistor R214 is... The reference voltage (which can be regulated up to 2.5V) is obtained by regulating the voltage at the inverting input terminal through the precision voltage regulator IC201. When the voltage stored in energy storage unit 14 detected at the non-inverting input terminal satisfies the above relationship, the output terminal of voltage comparator U1 outputs a high-level signal to the base of NPN transistor Q201. NPN transistor Q201 conducts when it receives the high-level signal at its base. At this time, the DC power supply connected to the collector of NPN transistor Q201 emits a high-level signal through the emitter of NPN transistor Q201 to the gate of the second slow-charge control switch device M3 in slow-charge switch unit 13, the gate of the first fast-charge control switch device M6 in fast-charge switch unit 17, and the input terminal of the power supply delay component in load switch unit 18. When the gate of the second slow-charge control switch device M3 receives the high-level signal emitted by the emitter of NPN transistor Q201, it triggers… When the slow-charge switch M1 is disconnected, the power input interface 11 stops charging the energy storage unit 14 through the slow-charge unit 12 and the slow-charge switch unit 13. When the gate of the first fast-charge control switch M6 receives a high-level signal from the emitter of the NPN transistor Q201, it triggers the fast-charge switch M5 to turn on, allowing the power input interface 11 to charge the energy storage unit 14 through the fast-charge switch unit. When the input of the power supply delay component receives a high-level signal from the emitter of the NPN transistor Q201, the power supply delay component starts storing energy. When the stored energy reaches the power supply voltage threshold, the power supply delay component outputs a high-level signal to the gate of the first power supply control switch M9 to trigger the power supply switch M8 to turn on, allowing the energy storage unit 14 to supply power to the load. When the enable control unit 15 receives a signal indicating that charging has stopped and discharging has begun, it outputs a low-level signal to the gate of the detection switch device M13 through resistors R209 and R210. Since the detection switch device M13 is a PMOS transistor, it conducts when its gate receives the low-level signal. At this time, the DC power supply VCC connected to the source of the detection switch device M13 outputs a reference voltage to the inverting input of the voltage comparator U1. When the DC power supply VCC serves as the reference voltage for the inverting input of the voltage comparator U1, the voltage value of the energy storage unit 14 detected by the non-inverting input of the voltage comparator U1 cannot exceed the voltage value detected by the voltage comparator. The reference voltage at the inverting input terminal of U1 is used to continuously output a low-level signal to the base of NPN transistor Q201. When the base of NPN transistor Q201 receives the low-level signal, it turns off. The emitter of NPN transistor Q201 sends a low-level signal to the gate of the second slow-charge control switch M3 in slow-charge switch unit 13, the gate of the first fast-charge control switch M6 in fast-charge switch unit 17, and the input terminal of the power supply delay component in load switch unit 18. When the gate of the second slow-charge control switch M3 receives the low-level signal from the emitter of NPN transistor Q201... When the second slow-charge control switch M3 is turned off, the gate of the first slow-charge control switch M2 receives a low-level signal from the enable control unit 15, causing the slow-charge switch M1 to be in the off state, so that the power input interface 11 no longer charges the energy storage unit 14 through the slow-charge unit 12 and the slow-charge switch unit 13; when the gate of the first fast-charge control switch M6 receives a low-level signal from the emitter of the NPN transistor Q201, the fast-charge switch M5 is turned off, so that the power input interface 11 stops charging the energy storage unit 14 through the fast-charge switch unit; when the input of the power supply delay component receives When the emitter of the NPN transistor Q201 emits a low-level signal, the power supply delay component outputs a low-level signal to the gate of the first power supply control switch M9, causing the power supply switch M8 to be in the off state, and the energy storage unit 14 to stop supplying power to the load. Among them, resistors R233, capacitors C216, R211, R212, R213, R214, R215, R216, R217, capacitors C206, C207, C208, C209, precision voltage regulator IC201, and diode D1 work together to stabilize voltage, limit current, clamp, and prevent reverse connection.

[0025] In one embodiment, such as Figure 3 As shown, the anti-charging lock-up system provided in this embodiment also includes: an auxiliary unit 23; The auxiliary unit 23 is connected to the power input interface 11 and is used to store voltage when the energy storage component 102 is charging. like Figure 2 As shown, the auxiliary unit 23 includes: a step-down regulator U2, diodes D3, D4, and D5, a fuse F1, capacitors C218, C219 (a polarized capacitor), C220, C221, C222 (a polarized capacitor), C223, C224 (a polarized capacitor), C225, resistors R237 and R238, and an inductor L1; The anode of diode D3 is connected to energy storage component 102 (i.e., energy storage unit 14), and the anode of diode D4 is connected to power input interface 11. The cathodes of diodes D3 and D4 are connected to one end of capacitor C218, the anode of capacitor C219, and one end of fuse F1. The other end of fuse F1 is connected to one end of capacitor C220 and the voltage input terminal (pin 1 of buck regulator U2). One end of capacitor C218 is connected to the cathode of capacitor C219, and the other end of capacitor C220 is connected to ground. Pins 3, 5, and 6 of buck regulator U2 are connected to ground. The feedback terminal of buck regulator U2... (Pin 4 of buck regulator U2) is connected to one end of resistor R237, one end of resistor R238, and one end of capacitor C221. The other end of resistor R237 is grounded. The voltage output terminal of buck regulator U2 (pin 2 of buck regulator U2) is connected to the cathode of diode D5 and one end of inductor L1. The other end of inductor L1 is connected to the anode of capacitor C222, one end of capacitor C223, the anode of capacitor C224, one end of capacitor C225, and DC power supply VCC. The cathode of capacitor C222 is connected to the other end of capacitor C223, the cathode of capacitor C224, the other end of capacitor C225, and the anode of diode D5, and then grounded. During the energy storage process of energy storage unit 14, energy storage unit 14 supplies voltage to the voltage input terminal of buck regulator U2 via diode D3. The power supply VIN connected to power input interface 11 supplies voltage to the voltage input terminal of buck regulator U2 via diode D4. The higher voltage provided by power supply VIN and energy storage unit 14 is processed by buck regulator U2 and then outputs a stable low voltage to capacitors C222, C223, C224, and C225 for energy storage. During the buck regulation process, the feedback terminal of buck regulator U2 collects the output voltage of the voltage output terminal in real time. When the feedback terminal detects that the output voltage deviates from the set value, the error amplifier in buck regulator U2 automatically adjusts the pulse width modulation (PWM) signal to restore the output voltage to a stable value.

[0026] In one embodiment, such as Figure 3As shown, the anti-charging lock-up system provided in this embodiment also includes: a protection unit 24; The input terminal of the protection unit 24 is connected to the power input interface 11, and the output terminal of the protection unit 24 is connected to the first port of the anti-lock switch device. like Figure 2 As shown, the protection unit 24 includes a varistor R239 and a fuse F2; one end of the fuse F2 serves as the input terminal of the protection unit 24 and is connected to the power supply input interface 11, while the other end of the fuse F2 and one end of the varistor R239 serve as the output terminals of the protection unit 24 and are connected to the source of the anti-lock-up switch device M14; the other end of the varistor R239 is grounded; the fuse F2 is used to blow when the current in the power supply line is too large, and when the voltage in the circuit is too large, the varistor R239 clamps the voltage through surge suppression. The fuse F2 and the varistor R239 together provide voltage and current protection for the energy storage circuit.

[0027] In one embodiment, such as Figure 3 As shown, the anti-charging lock-up system provided in this embodiment also includes: a filter unit 25; The input terminal of the filter unit 25 is connected to the power supply input interface 11, the output terminal of the filter unit 25 is connected to the first port of the anti-lock switch device, and the filter unit 25 is connected in parallel with the protection unit 24. like Figure 2 As shown, the filter unit 25 includes: a filter capacitor C227; one end of the filter capacitor C227 serves as the input terminal of the filter unit 25 and is connected to the power supply input interface 11 and one end of the fuse F2; the other end of the filter capacitor C227 serves as the output terminal of the filter unit 25 and is connected to the other end of the varistor R239 and then grounded. The filter capacitor C227 is used to filter the current in the circuit.

[0028] In one embodiment, such as Figure 3 As shown, the anti-charging lock-up system provided in this embodiment also includes: an anti-reverse connection unit 26; The input terminal of the reverse connection protection unit 26 is connected to the power supply input interface 11, and the output terminal of the reverse connection protection unit 26 is connected to the first port of the anti-lock-up switch device. The reverse connection protection unit 26 is used to be turned on when the power input interface 11 is connected to the external power supply in the positive direction, and turned off when the power input interface 11 is connected to the external power supply in the reverse direction. like Figure 2As shown, the reverse connection protection unit 26 includes: a reverse connection protection switch M15 (a PMOS transistor) and a capacitor C228; the input terminal of the reverse connection protection unit 26 (i.e., the source of the reverse connection protection switch M15) is connected to the power supply input interface 11 and one end of the capacitor C228, the output terminal of the reverse connection protection unit 26 (i.e., the drain of the reverse connection protection switch M15) is connected to the source of the anti-lock-up switch M14, and the control terminal of the reverse connection protection unit 26 (i.e., the gate of the reverse connection protection switch M15) is connected to the other end of the capacitor C228 and then grounded; Since the reverse connection protection switch M15 is a PMOS transistor and its gate is grounded, it is in a low-level state. Therefore, it will only conduct when the source voltage of the reverse connection protection switch M15 is greater than the drain voltage. When the power supply input interface 11 is connected to the positive terminal of the power supply VIN (i.e., the power supply input interface 11 is positively connected to the external power supply VIN), the source voltage of the reverse connection protection switch M15 is greater than the drain voltage, and the reverse connection protection switch M15 conducts. When the power supply input interface 11 is connected to the negative terminal of the power supply VIN (i.e., the power supply input interface 11 is reversely connected to the external power supply VIN), the source voltage of the reverse connection protection switch M15 is less than the drain voltage, and the reverse connection protection switch M15 is disconnected. The reverse connection protection unit 26 uses the reverse connection protection switch M15 (PMOS transistor) as a reverse power input protection device, which has the advantage of reducing power loss compared with the prior art of using diodes as reverse power input protection devices.

[0029] The present invention provides a specific embodiment of energy storage and discharge using the above-mentioned anti-charging lock-up system applied to a laser therapy device: When the anti-charging lockout system needs energy storage, the enable control unit 15 outputs a high-level signal to the gate of the first slow-charging control switch device M2 in the slow-charging switch unit 13, the gate of the discharge control switch device M12 in the discharge switch unit 20, and the gate of the detection switch device M13 in the detection control unit 21. When the gate of the first slow-charging control switch device M2 receives the high-level signal, it triggers the slow-charging switch device M1 to conduct. The power supply input interface 11 first performs slow charging for the energy storage component 102 (i.e., energy storage unit 14) through the slow-charging unit 12 and the slow-charging switch unit 13; the discharge control... When the gate of switching device M12 receives a high-level signal, it controls the discharge switching device M11 to remain open, preventing the energy storage unit 14 from discharging. The detection switching device M13 is turned off when its gate receives a high-level signal. At this time, the voltage regulated by the precision voltage regulator IC201 (2.5V) serves as the reference voltage for the inverting input of voltage comparator U1. The non-inverting input of voltage comparator U1 continuously monitors the voltage stored in energy storage unit 14. When the voltage stored in energy storage unit 14 exceeds a preset voltage threshold, the output of voltage comparator U1 outputs a high-level signal to the NPN transistor. At the base of transistor Q201, NPN transistor Q201 is turned on, and the emitter of NPN transistor Q201 outputs a high-level signal to capacitor C212 in load switch unit 18, the gate of the first fast-charging control switch device M6 in fast-charging switch unit, and the gate of the second slow-charging control switch device M3. When the gate of the second slow-charging control switch device M3 receives a high-level signal, it triggers the slow-charging switch device M1 to turn off, and the power supply input interface 11 stops slow-charging the energy storage unit 14 through the slow-charging unit 12 and the slow-charging switch unit 13. The gate of the first fast-charging control switch device M6 is... When a high-level signal is received, the fast-charging switch M5 is triggered to turn on. At this time, the power supply input interface 11 charges the energy storage unit 14 through the fast-charging switch unit 17, completing the switch from slow charging to fast charging. When the capacitor C212 in the load switch unit 18 receives a high-level signal, it stores energy. When the capacitor C212 stores energy to the power supply voltage threshold, the capacitor C212 outputs a high-level signal to the gate of the first power supply control switch M9 to trigger the power supply switch M8 to turn on. The energy storage unit 14 supplies power to the external load through the load switch unit 18, ensuring that the energy storage unit 14 can drive a large load. The anti-charging lock-up system provided in this embodiment of the invention also includes an anti-charging lock-up unit 22 between the power input interface 11 and the slow charging unit 12. When the power input interface 11 starts slow charging the energy storage unit 14, the DC power supply connected to the charge lock-up unit starts to output a high-level signal to the anti-lock-up delay capacitor C217. When the anti-lock-up delay capacitor C217 receives the high-level signal, it starts to store energy. When the energy stored in the anti-lock-up delay capacitor C217 reaches the anti-lock-up voltage threshold, it outputs a high-level signal to the gate of the anti-lock-up switch device M14 to trigger the anti-lock-up switch device M14 to be turned off, thus avoiding the situation where the energy storage unit 14 is continuously slow-charged due to circuit failure. When the anti-charging lockout system needs to discharge, the enable control unit 15 outputs a low-level signal to the gate of the first slow-charging control switch device M2 in the slow-charging switch unit 13, the gate of the discharge control switch device M12 in the discharge switch unit 20, and the gate of the detection switch device M13 in the detection control unit 21. When the gate of the first slow-charging control switch device M2 receives a low-level signal, it triggers the slow-charging switch device M1 to open, and the power supply input interface 11 stops slow-charging the energy storage unit 14 through the slow-charging unit 12 and the slow-charging switch unit 13. When the gate of the discharge control switch device M12 receives a low-level signal, it triggers the discharge switch device M11 to turn on, and the energy storage unit 14 discharges through the slow-discharge unit 19 and the discharge switch unit 20. When the gate of the detection switch device M13 receives a high-level signal, the DC power supply VCC is used as the inverting input of the voltage comparator U1. The reference voltage of the terminal; the voltage stored in the energy storage unit 14, which is detected in real time at the non-inverting input terminal of the voltage comparator U1, cannot exceed the voltage value of the DC power supply VCC. The output terminal of the voltage comparator U1 outputs a low-level signal to the base of the NPN transistor Q201, the NPN transistor Q201 is turned off, and the emitter of the NPN transistor Q201 outputs a low-level signal to the capacitor C212 in the load switch unit 18 and the gate of the first fast charging control switch device M6 in the fast charging switch unit; when the gate of the first fast charging control switch device M6 receives a low-level signal, it controls the fast charging switch device M5 to open. At this time, the power supply input interface 11 stops charging the energy storage unit 14 through the fast charging switch unit 17; when the gate of the first power supply control switch device M9 in the load switch unit 18 receives a low-level signal, it triggers the power supply switch device M8 to turn off, and the energy storage unit 14 stops supplying power to the external load.

[0030] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or apparatus 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 invention.

[0031] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the term "installation" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal connection of two devices. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A charging lock-up prevention system for laser therapy devices, characterized in that, include: Power input interface, slow charge current limiting component, slow charge switching device, energy storage component, enable control unit, anti-lock-up switching device and anti-lock-up delay component; The power input interface is connected to the first port of the anti-lock-up switch device, the second port of the anti-lock-up switch device is connected to the input terminal of the slow-charge current limiting component, and the output terminal of the slow-charge current limiting component is connected to the first port of the slow-charge switch device. The slow-charge current limiting component is used for current limiting. The second port of the slow-charge switch is connected to the energy storage component, the control terminal of the slow-charge switch is connected to the enable control unit, and the slow-charge switch is in the off state. The enable control unit is used to output a high-level signal to the control terminal of the slow-charge switch device when it receives a signal to start charging, so as to control the first port and the second port of the slow-charge switch device to be turned on, so that the power supply input interface charges the energy storage component through the anti-lock-up switch device, the slow-charge current limiting component and the slow-charge switch device; The control terminal of the anti-lock-up switch is connected to the output terminal of the anti-lock-up delay component, and the input terminal of the anti-lock-up delay component is connected to a DC power supply. When the enable control unit receives a signal to start charging, it controls the DC power supply to charge the anti-lock-up delay component. When the energy stored in the anti-lock-up delay component reaches the anti-lock-up voltage threshold, the anti-lock-up delay component outputs a high-level signal to the control terminal of the anti-lock-up switch device, triggering the first port and the second port of the anti-lock-up switch device to disconnect, thereby stopping the power supply input interface from supplying power to the energy storage component through the slow-charge current limiting component and the slow-charge switch device. The anti-lock-up delay component includes an anti-lock-up delay resistor and an anti-lock-up delay capacitor; The input terminal of the anti-lock-out delay resistor is connected to an external DC power supply. The output terminal of the anti-lock-out delay resistor is connected to the input terminal of the anti-lock-out delay capacitor and the control terminal of the anti-lock-out switching device. The output terminal of the anti-lock-out delay capacitor is grounded. The first port of the anti-lock-out switching device is connected to the power supply input interface. The second port of the anti-lock-out switching device is connected to the input terminal of the slow-charge current limiting component. When the enable control unit receives a signal to start charging, it controls the DC power supply to charge the anti-lock-out delay capacitor through the anti-lock-out delay resistor. When the energy stored in the anti-lock-out delay capacitor reaches the anti-lock-out voltage threshold, the anti-lock-out delay capacitor outputs a high-level signal to the control terminal of the anti-lock-out switching device, so as to disconnect the first and second ports of the anti-lock-out switching device, thereby stopping the power supply input interface from supplying power to the energy storage component. The anti-charging lockout system also includes: a detection unit and a fast charging switch unit; The input terminal of the detection unit is connected to the energy storage component, and the output terminal of the detection unit is connected to the control terminal of the fast charging switch unit and the control terminal of the slow charging switch device; wherein, the detection unit is used to detect the voltage of the energy storage component; The first port of the fast charging switch unit is connected to the power input interface, the second port of the fast charging switch unit is connected to the energy storage component, and the fast charging switch unit is in the off state. The detection unit is used to trigger the first port and the second port of the slow-charge switch to return to the open state and trigger the first port and the second port of the fast-charge switch unit to be turned on when the voltage of the energy storage component is greater than the fast-charge voltage threshold, so that the power supply input interface charges the energy storage component through the fast-charge switch unit.

2. The anti-charging lock-up system according to claim 1, characterized in that, Also includes: Load switching unit; The control terminal of the load switch unit is connected to the output terminal of the detection unit, the first port of the load switch unit is connected to the energy storage component, the second port of the load switch unit is used to connect an external load, and the load switch unit is in an open state. The detection unit is used to charge the load switch unit when it detects that the voltage of the energy storage component is greater than a preset voltage threshold. When the energy stored in the load switch unit reaches the power supply voltage threshold, it triggers the first port and the second port of the load switch unit to conduct, so that the energy storage component supplies power to the load through the load switch unit.

3. The anti-charging lock-up system according to claim 1, characterized in that, Also includes: Slow discharge unit and discharge switch unit; The enabling control unit is connected to the control terminal of the discharge switch unit. The first port of the discharge switch unit is grounded, the second port of the discharge switch unit is connected to the output terminal of the slow discharge unit, the input terminal of the slow discharge unit is connected to the energy storage component, and the slow discharge unit uses current limiting. The enable control unit is used to output a low-level signal to the control terminal of the discharge switch unit when it receives a signal to stop charging, so as to control the first port and the second port of the discharge switch unit to be turned on, so that the energy storage component releases electrical energy to the discharge switch unit through the slow discharge unit.

4. The anti-charging lock-up system according to claim 3, characterized in that, Also includes: Detection and control unit; The detection unit includes: a voltage comparator; The non-inverting input of the voltage comparator is connected to the energy storage component, the inverting input of the voltage comparator is connected to the output of the detection control unit, the output of the voltage comparator is connected to the control terminal of the fast charging switch unit, and the control terminal of the detection control unit is connected to the enable control unit. The enable control unit is used to output a low-level signal to the control terminal of the detection control unit when it receives a signal to stop charging, so that the output terminal of the detection control unit outputs a high-level signal to the inverting input terminal of the voltage comparator. The voltage comparator is used to trigger the first port and the second port of the fast charging switch unit to return to the open state when a high-level signal is received at the inverting input terminal.

5. The anti-charging lock-up system according to claim 1, characterized in that, Also includes: Auxiliary unit; The auxiliary unit is connected to the power input interface and is used to store voltage when the energy storage component is charging.

6. The anti-charging lock-up system according to claim 1, characterized in that, Also includes: Protection unit; The input terminal of the protection unit is connected to the power supply input interface, and the output terminal of the protection unit is connected to the first port of the anti-lock-up switch device.

7. The anti-charging lock-up system according to claim 6, characterized in that, Also includes: Filtering unit; The input terminal of the filtering unit is connected to the power supply input interface, the output terminal of the filtering unit is connected to the first port of the anti-lock-up switch device, and the filtering unit is connected in parallel with the protection unit.

8. The anti-charging lock-up system according to claim 1, characterized in that, Also includes: Reverse connection protection unit; The input terminal of the reverse connection protection unit is connected to the power supply input interface, and the output terminal of the reverse connection protection unit is connected to the first port of the anti-lock-up switch device. The reverse connection protection unit is used to turn on when the power input interface is connected to the external power supply in the positive direction, and to turn off when the power input interface is connected to the external power supply in the reverse direction.

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