Energy storage and discharge circuit applied to laser therapeutic instrument

Abstract

The invention provides an energy storage and discharge circuit applied to a laser therapeutic instrument, and relates to the technical field of energy storage and discharge, a power supply input interface in the circuit is connected with an input end of a slow charge current limiting assembly and a first port of a fast charge switching device, and an output end of the slow charge current limiting assembly is connected with a first port of the slow charge switching device; a second port of the slow charging switch device is connected with a second port of the fast charging switch device, the energy storage assembly and the in-phase input end of the voltage comparator, and the control end of the slow charging switch device is connected with the control ends of the enabling control unit and the detection switch device; the control end of the fast charge switching device is connected with the output end of the voltage comparator; the inverted input end of the voltage comparator is connected with the first port of the detection switch device, and the second port of the detection switch device is externally connected with a direct-current power supply. The voltage stored by the energy storage assembly is judged in real time through the detection unit, and it is ensured that the energy storage assembly is switched to the fast charging circuit after slow charging is completed.

Description

Technical Field

[0001] This invention relates to the field of energy storage and discharge technology, and more specifically, to an energy storage and discharge circuit applied to a laser therapy device. 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 apply to 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. In the process of directly storing energy into the capacitor through the power supply, the energy storage and discharge circuit usually starts with slow charging and then switches to a fast charging circuit. However, during the switching of charging circuits, it is easy to misjudge the energy storage status of the capacitor. This can lead to switching to a fast charging circuit before the capacitor is fully charged, which can cause sudden voltage changes across the capacitor and damage. It can also lead to overcharging of the capacitor, resulting in slow energy storage. Summary of the Invention

[0003] This invention provides an energy storage and discharge circuit for use in laser therapy devices, which solves the technical problem that existing energy storage and discharge circuits are inaccurate in judging the energy storage status of capacitors and are prone to switching the charging circuit too early or too late.

[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 energy storage and discharge circuit for use in a laser therapy device. The circuit includes: a power supply input interface, a slow-charge current limiting component, a slow-charge switching device, an energy storage component, an enable control unit, a voltage comparator, a fast-charge switching device, and a detection switching device. The power input interface is connected to the input terminal of the slow charging current limiting component and the first port of the fast charging switch device. The output terminal of the slow charging current limiting component is connected to the first port of the slow charging switch device. The slow charging 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 slow-charge current limiting component and the slow-charge switch device; The output terminal of the voltage comparator is connected to the control terminal of the fast charging switch and the control terminal of the slow charging switch, and the second port of the fast charging switch is connected to the energy storage component; wherein, the voltage comparator is used to detect the voltage of the energy storage component; 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 first port of the detection switch device, the second port of the detection switch device is connected to an external DC power supply, and the control terminal of the detection switch device is connected to the enable control unit. The enable control unit is used to output a high-level signal to the control terminal of the detection switch device when it receives a signal to start charging, so as to control the detection switch device to be in the off state and make the inverting input terminal of the voltage comparator receive a low-level signal. The voltage comparator is used to trigger the first and second ports of the slow-charge switch to turn off and the first and second ports of the fast-charge switch to turn on when the voltage of the energy storage component is detected at the non-inverting input terminal to be greater than the low-level signal received at the inverting input terminal, so that the power supply input interface charges the energy storage component through the fast-charge switch.

[0005] Furthermore, the present invention provides a first possible implementation of the first aspect, wherein the energy storage discharge circuit further includes: a first slow charge control switch device, a second slow charge control switch device, and a third slow charge control switch device; The control terminal of the first slow-charge control switch is connected to the enable control unit and the first port of the second slow-charge control switch. The first port of the first slow-charge control switch is grounded. The second port of the first slow-charge control switch is connected to the control terminal and the first port of the third slow-charge control switch. The first port of the third slow-charge control switch is used to connect to an external DC power supply. The second port of the third slow-charge control switch is connected to the control terminal of the slow-charge switch and grounded. The enable control unit is used to output a high-level signal to the control terminal of the first slow-charge control switch when it receives a signal to start charging, triggering the first slow-charge control switch to turn on, so that the control terminal of the third slow-charge control switch receives a low-level signal, triggering the third slow-charge control switch to turn on, so that the control terminal of the slow-charge switch receives a high-level signal, triggering the slow-charge switch to turn on, so that the power supply input interface charges the energy storage component through the slow-charge current limiting component and the slow-charge switch; The second port of the second slow-charge control switch is grounded, and the control terminal of the second slow-charge control switch is connected to the output terminal of the voltage comparator. When the voltage of the energy storage component is detected to be greater than the low-level signal received at the inverting input of the voltage comparator, the output of the voltage comparator outputs a high-level signal to the control terminal of the second slow-charge control switch, triggering the second slow-charge control switch to turn on. This causes the control terminal of the first slow-charge control switch to receive a low-level signal, triggering the first slow-charge control switch to turn off. Similarly, the control terminal of the third slow-charge control switch receives a high-level signal, triggering the third slow-charge control switch to turn off. Finally, the control terminal of the slow-charge switch receives a low-level signal, triggering the slow-charge switch to turn off, thereby stopping the power supply input interface from charging the energy storage component through the slow-charge current limiting component and the slow-charge switch.

[0006] Furthermore, this embodiment of the invention provides a second possible implementation of the first aspect, wherein the energy storage discharge circuit further includes: a first fast charging control switch device and a second fast charging control switch device; The control terminal of the first fast charging control switch is connected to the output terminal of the voltage comparator. The first port of the first fast charging control switch is grounded. The second port of the first fast charging control switch is connected to the control terminal of the second fast charging control switch and the first port of the second fast charging control switch. The first port of the second fast charging control switch is used to connect to an external DC power supply. The second port of the second fast charging control switch is connected to the control terminal of the fast charging switch and grounded. When the voltage of the energy storage component is detected to be greater than the low-level signal received at the inverting input of the voltage comparator, the output of the voltage comparator outputs a high-level signal to the control terminal of the first fast-charging control switch, triggering the first fast-charging control switch to turn on. This causes the control terminal of the second fast-charging control switch to receive a low-level signal, triggering the second fast-charging control switch to turn on. This causes the control terminal of the fast-charging switch to receive a high-level signal, triggering the fast-charging switch to turn on, thereby stopping the power supply input interface from charging the energy storage component through the fast-charging switch.

[0007] Furthermore, this embodiment of the invention provides a third possible implementation of the first aspect, wherein the energy storage and discharge circuit further includes: a fuse and a varistor; The input terminal of the fuse is connected to the power input interface, the output terminal of the fuse is connected to the input terminal of the varistor, and the output terminal of the varistor is grounded.

[0008] Furthermore, this embodiment of the invention provides a fourth possible implementation of the first aspect, wherein the energy storage and discharge circuit further includes: a filter capacitor; The input terminal of the filter capacitor is connected to the power supply input interface, and the output terminal of the filter capacitor is connected to the output terminal of the varistor.

[0009] Furthermore, this embodiment of the invention provides a fifth possible implementation of the first aspect, wherein the energy storage discharge circuit further includes: a reverse connection protection switch device; The first port of the reverse connection protection switch is connected to the power supply input interface, the second port of the reverse connection protection switch is connected to the input terminal of the slow charge current limiting component, and the control terminal of the reverse connection protection switch is grounded. The first and second ports of the reverse connection protection switch are used to conduct when the power input interface is positively connected to an external power supply, and to disconnect when the power input interface is positively connected to an external power supply.

[0010] Furthermore, this embodiment of the invention provides a sixth possible implementation of the first aspect, which further includes: a buck regulator and an auxiliary energy storage component; The input terminal of the step-down voltage regulator is connected to the power supply input interface, and the output terminal of the step-down voltage regulator is connected to the auxiliary energy storage component. The power input interface charges the auxiliary energy storage component through the step-down regulator; wherein, the step-down regulator is used to step down and regulate the voltage received at the input terminal and then output it through the output terminal.

[0011] Furthermore, this embodiment of the invention provides a seventh possible implementation of the first aspect, wherein the energy storage discharge circuit further includes: a discharge switch unit; The control terminal of the discharge switch unit is connected to the enable control unit, the first port of the discharge switch unit is connected to the energy storage component, and the second port of the discharge switch unit is used for grounding. The enable control unit is used to output a low-level signal to the control terminal of the detection switch device when it receives a signal to stop charging, so as to control the detection switch device to be in the on state and make the inverting input terminal of the voltage comparator receive a high-level signal. The voltage comparator is used to trigger the first and second ports of the fast charging switch to be turned off when a high-level signal is received at the inverting input terminal, so that the power supply input interface stops charging the energy storage component through the fast charging switch. 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.

[0012] Furthermore, this embodiment of the invention provides an eighth possible implementation of the first aspect, wherein the energy storage discharge circuit further includes: a load switching unit; The control terminal of the load switch unit is connected to the output terminal of the voltage comparator, 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 voltage comparator is used to charge the load switching 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 switching unit reaches the power supply voltage threshold, it triggers the first port and the second port of the load switching unit to conduct, so that the energy storage component supplies power to the load through the load switching unit.

[0013] Furthermore, this embodiment of the invention provides a ninth possible implementation of the first aspect, wherein the energy storage discharge circuit further includes: an anti-charging lock-up unit; The first port of the anti-charging lock-up unit is connected to the power input interface, the second port of the anti-charging lock-up unit is connected to the input terminal of the slow charging current limiting component, the control terminal of the anti-charging lock-up unit is used to connect an external DC power supply, and the anti-charging lock-up unit is in the conducting state. When the enable control unit receives a signal to start charging, it controls the DC power supply to charge the anti-charging lock-up unit. When the energy stored in the anti-charging lock-up unit reaches the anti-lock-up voltage threshold, it triggers the first port and the second port of the anti-charging lock-up unit to disconnect, so as to stop the power supply input interface from supplying power to the energy storage component through the slow charging current limiting component and the slow charging switch component.

[0014] This invention provides an energy storage and discharge circuit for a laser therapy device. The circuit includes: a power input interface, a slow-charge current-limiting component, a slow-charge switch, an energy storage component, an enable control unit, a voltage comparator, a fast-charge switch, and a detection switch. The power input interface is connected to the input terminal of the slow-charge current-limiting component and the first port of the fast-charge switch. The output terminal of the slow-charge current-limiting component is connected to the first port of the slow-charge switch, and 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, and the control terminal of the slow-charge switch is connected to the enable control unit. The slow-charge switch is in an off state. The enable control unit outputs a high-level signal to the control terminal of the slow-charge switch when it receives a signal to start charging, thereby controlling the first and second ports of the slow-charge switch to be connected, so that the power input interface charges the energy storage component through the slow-charge current-limiting component and the slow-charge switch. The second port of the fast-charge switch is connected to the energy storage component. The components are connected as follows: the control terminal of the fast-charging switch is connected to the output terminal of the voltage comparator; the voltage comparator is used to detect the voltage of the energy storage component; the non-inverting input terminal of the voltage comparator is connected to the energy storage component, the inverting input terminal of the voltage comparator is connected to the first port of the detection switch, the second port of the detection switch is connected to an external DC power supply, and the control terminal of the detection switch is connected to the enable control unit; the enable control unit is used to output a high-level signal to the control terminal of the detection switch when it receives a signal to start charging, so as to control the detection switch to be in the off state, so that the inverting input terminal of the voltage comparator receives a low-level signal; the voltage comparator is used to trigger the first and second ports of the slow-charging switch to be cut off and the first and second ports of the fast-charging switch to be turned on when it detects that the voltage of the energy storage component is greater than the low-level signal received at the inverting input terminal, so that the power supply input interface charges the energy storage component through the fast-charging switch.When the energy storage component in the energy storage discharge circuit provided by this invention begins charging, the enable control unit outputs a high-level signal to the control terminal of the slow-charge switch and the control terminal of the detection switch. The slow-charge switch is turned on when the control terminal receives the high-level signal, allowing the power input interface to perform slow charging of the energy storage component through the slow-charge current limiting component and the slow-charge switch. This avoids excessive current in the charging circuit during charging, which could cause a sudden voltage change across the energy storage component, reducing the possibility of capacitor damage in the energy storage component. Furthermore, the detection switch is turned off when the control terminal receives the high-level signal. At this time, the inverting input terminal of the voltage comparator receives a low-level signal, and the non-inverting input terminal of the voltage comparator collects the voltage stored in the energy storage component in real time. The voltage collected by the non-inverting input terminal is compared with the low-level signal at the inverting input terminal. When the voltage of the energy storage component acquired at the non-inverting input terminal is greater than the low-level signal at the inverting input terminal, it proves that the slow charging of the energy storage component by the power supply input interface through the slow charging current limiting component is completed. The voltage comparator triggers the first and second ports of the slow charging switch to be cut off, and triggers the first and second ports of the fast charging switch to be turned on, so that the power supply input interface can quickly charge the energy storage component through the fast charging switch. The comparison result between the voltage acquired at the non-inverting input terminal of the voltage comparator and the low-level signal received at the inverting input terminal is used as the basis for judging whether the slow charging of the energy storage component is completed. This enables accurate judgment of the energy storage status of the energy storage component, avoids switching the energy storage discharge circuit from the slow charging circuit to the fast charging circuit too early or too late, improves the stability of the energy storage discharge circuit, and ensures the energy storage speed 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 A schematic diagram of a circuit module for an energy storage and discharge circuit provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the overall circuit of an energy storage and discharge circuit provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of an energy storage and discharge circuit 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 invention provides an energy storage and discharge circuit for use in laser therapy devices. (See attached image.) Figure 1 The circuit module diagram of an energy storage and discharge circuit shown includes: a power supply 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, a voltage comparator U1, a fast charge switching device M5, and a detection switching device M13. The power input interface 11 is connected to the input terminal of the slow charging current limiting component 101 and the first port of the fast charging switch device M5. The output terminal of the slow charging current limiting component 101 is connected to the first port of the slow charging switch device M1. The slow charging 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 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 output terminal of voltage comparator U1 is connected to the control terminal of fast charging switch device M5 and the control terminal of slow charging switch device M1. The second port of fast charging switch device M5 is connected to energy storage component 102 and to the output terminal of voltage comparator U1. Voltage comparator U1 is used to detect the voltage of energy storage component 102. 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 first port of detection switch device M13, the second port of detection switch device M13 is connected to an external DC power supply, and the control terminal of detection switch device M13 is connected to enable control unit 15. The enable control unit 15 is used to output a high-level signal to the control terminal of the detection switch device M13 when it receives the signal to start charging, so as to control the detection switch device M13 to be in the off state and make the inverting input terminal of the voltage comparator U1 receive a low-level signal. The voltage comparator U1 is used to trigger the first and second ports of the slow-charge switch M1 to be turned off and the first and second ports of the fast-charge switch M5 to be turned on when the voltage of the energy storage component 102 is detected at the non-inverting input terminal to be greater than the low-level signal received at the inverting input terminal, so that the power supply input interface 11 charges the energy storage component 102 through the fast-charge switch M5. See Figure 2The diagram shows the overall circuit of an energy storage and discharge circuit. 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 fast-charge switching device M5 is an NMOS transistor. The detection switching device M13 is a PMOS transistor. The power input interface 11 is connected to the input terminal of the slow charging current limiting component 101 (i.e., one end of resistor R201) and the first port of the fast charging switch device M5 (i.e., the drain of the fast charging switch device M5). The output terminal of the slow charging current limiting component 101 (i.e., one end of resistor R203) is connected to the first port of the slow charging switch device M1 (i.e., the drain of the slow charging switch device M1). The slow charging current limiting component 101 is used for current limiting. 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), and 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 in the off state. 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. Since the slow-charge switch device M1 is an NMOS transistor, the slow-charge switch device M1 is turned on when the gate receives a high-level signal. At this time, 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 output terminal of voltage comparator U1 (i.e., pin 1 of voltage comparator U1) is connected to the control terminal of fast charging switch device M5 (i.e., the gate of fast charging switch device M5) and the control terminal of slow charging switch device M1. The second port of fast charging switch device M5 (i.e., the source of fast charging switch device M5) is connected to energy storage component 102 (i.e., the anode of capacitor C203 and one end of capacitor C204). Among them, voltage comparator U1 is used to detect the voltage of energy storage component 102. The non-inverting input terminal of voltage comparator U1 (i.e., pin 3 of voltage comparator U1) is connected to the energy storage component 102, the inverting input terminal of voltage comparator U1 (i.e., pin 2 of voltage comparator U1) is connected to the first port (i.e., the drain of detection switch device M13), the second port (i.e., the source of detection switch device M13) is connected to an external DC power supply VCC, and the control terminal (i.e., the gate of detection switch device M13) is connected to the enable control unit 15. The enable control unit 15 is used to output a high-level signal to the gate of the detection switch device M13 when it receives a signal to start charging. Since the detection switch device M13 is a PMOS transistor, the detection switch device M13 is turned off when the gate receives a high-level signal, so that the inverting input terminal of the voltage comparator U1 receives a low-level signal. The voltage comparator U1 is used to trigger the first and second ports of the slow-charge switch M1 to be turned off and the first and second ports of the fast-charge switch M5 to be turned on when the voltage of the energy storage component 102 is detected at the non-inverting input terminal to be greater than the low-level signal received at the inverting input terminal, so that the power supply input interface 11 charges the energy storage component 102 through the fast-charge switch M5. See Figure 3 The diagram shows a unit schematic of an energy storage and discharge circuit. The energy storage and discharge circuit provided in this embodiment of the invention includes: a power supply input interface 11, a slow charging unit 12, a slow charging switch unit 13, an energy storage unit 14, an enable control unit 15, a detection unit 16, a fast charging switch unit 17, and a detection control unit 21. The power input interface 11 is connected to the input terminal of the slow charging unit 12 (i.e., one end of resistor R201) and the first port of the fast charging switch unit 17 (the drain of the fast charging switch device M5). The output terminal of the slow charging unit 12 (i.e., one end of 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). By setting the slow charging unit 12 (i.e., the slow charging current limiting component 101), the current in the charging circuit is limited by the resistors R201, R202 and R203 connected in series, so as to avoid voltage change of the energy storage unit 14 during the charging process and to avoid damage to capacitors C203 and C204. 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 capacitor C203 and one end of capacitor C204). 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. The slow charging switch device M1 is an NMOS transistor. The slow charging 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 control terminal (i.e. the gate of the slow charging switch device M1) of the slow charging switch unit 13 when it receives the signal to start charging, so as to control the first port and the second port (i.e. the drain and source of the slow charging switch device M1) of the slow charging switch unit 13 to be connected, so that the power supply input interface 11 charges the energy storage unit 14 through the slow charging unit 12 and the slow charging switch unit 13. The output terminal of the detection unit 16 (i.e., the output terminal of the voltage comparator U1) 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 (the gate of the slow charging switch device M1). The second port of the fast charging switch unit 17 (the gate of the fast charging switch device M5) is connected to the energy storage unit 14. The voltage comparator U1 is used to detect the voltage of the energy storage component 102. The non-inverting input terminal of the detection unit 16 (i.e., the non-inverting input terminal of the voltage comparator U1) is connected to the energy storage unit 14, the inverting input terminal of the detection unit 16 (i.e., the inverting input terminal of the voltage comparator U1) is connected to the first port of the detection control unit 21 (the drain of the detection switching device M13), the second port of the detection control unit 21 (the source of the detection switching device M13) is connected to an external DC power supply VCC, and the control terminal of the detection control unit 21 (i.e., the gate of the detection switching device M13) is connected to the enable control unit 15. The enable control unit 15 is used to output a high-level signal to the control terminal of the detection control unit 21 when it receives a signal to start charging, so as to control the detection switch device M13 to be in the off state, so that the inverting input terminal of the voltage comparator U1 receives a low-level signal. The detection unit 16 is used to trigger the slow charging switch unit 13 to turn off and the fast charging switch unit 17 to turn on when the voltage of the energy storage unit 14 detected at the non-inverting input terminal is greater than the low-level signal received at the inverting input terminal, so that the power supply input interface 11 charges the energy storage unit 14 through the fast charging switch unit 17. like Figure 2 As 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 a slow-charging switching device M1; the energy storage unit 14 includes an energy storage component 102 (i.e., capacitors C203 (a polarized capacitor) and C204 connected in parallel); the enable control unit 15 includes: resistors R209, R210, and C205; the detection unit 16 includes: resistors R211, R212, R213, R214, R215, R216, R217, capacitors C206, C207, C208, and C209, a precision voltage regulator IC201, an NPN transistor Q201, a diode D1, and a voltage comparator U1; the detection control unit 21 includes: resistor R233, capacitor C216, and a detection switching device M13. The power input interface 11 is connected to one end of resistor R201 and the drain of fast charging switch M5. The other end of resistor R201 is connected to one end of resistor R202. The other end of resistor R202 is connected to one end of resistor R203. The other end of resistor R203 is connected to the drain of slow charging switch M1. The source of slow charging switch M1 is connected to the anode of capacitor C203 and one end of capacitor C204. The cathode of capacitor C203 is connected in parallel with the other end of capacitor C204 and then grounded. The gate of slow charging switch M1 is connected to one end of resistor R209 and one end of resistor R210 in enable control unit 15. The other end of resistor R209 is used to connect to DC power supply VCC. When the enable control unit 15 receives a signal to start charging the energy storage component 102 (i.e., 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 slow-charge switch device M1 through resistor R209. Since the slow-charge switch device M1 is an NMOS transistor, the slow-charge switch device M1 is turned on when the 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 device M1. The other end of resistor R210 is connected to one end of capacitor C205 and the gate of detection switch M13. The source of detection switch M13 is used to connect to the external DC power supply VCC. The other end of capacitor C205 is grounded. The drain of 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 of voltage comparator U1 (pin 4) is grounded. The power input terminal of voltage comparator U1 (pin 8) 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... One end is connected to the output terminal of voltage comparator U1 (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 the gate of slow charging switch M1 and the gate of fast charging switch M5, and the source of fast charging switch M5 is connected to the anode of capacitor C203 and one end of capacitor C204. 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 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 the 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 component 102 (i.e., 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 the energy storage unit 14 detected by the non-inverting input terminal satisfies the above relationship, the output terminal of the voltage comparator U1 outputs a high-level signal to the base of the NPN transistor Q201. When the NPN transistor Q201 receives the high-level signal at its base, it turns on. At this time, the signal emitted by the collector of the NPN transistor Q201 triggers the slow-charge switch device M1 to turn off, so that the power supply input interface 11 no longer charges the energy storage unit 14 through the slow-charge unit 12 and the slow-charge switch unit 13. At this time, the DC power supply VCC connected to the NPN transistor Q201 emits a high-level signal through the emitter of the NPN transistor Q201 to the gate of the first fast-charging control switch device M6 in the fast-charging switch unit 17. When the gate of the first fast-charging control switch device M6 receives the high-level signal emitted by the emitter of the NPN transistor Q201, it triggers the fast-charging switch device M5 to conduct, so that the power supply input interface 11 charges the energy storage unit 14 through the fast-charging switch unit.

[0019] When the energy storage component 102 in the energy storage discharge circuit provided in this embodiment of the invention begins charging, the enable control unit 15 outputs a high-level signal to the control terminal of the slow-charge switch and the control terminal of the detection switch. The slow-charge switch is turned on when the control terminal receives the high-level signal, so that the power supply input interface 11 first performs slow charging on the energy storage component 102 through the slow-charge current limiting component 101 and the slow-charge switch, avoiding excessive current in the charging line during the charging process, which could cause a sudden voltage change across the energy storage component 102, thus reducing the possibility of capacitor damage in the energy storage component 102. At the same time, the detection switch is turned off when the control terminal receives the high-level signal. At this time, the inverting input terminal of the voltage comparator U1 receives a low-level signal, and the non-inverting input terminal of the voltage comparator U1 collects the voltage stored in the energy storage component 102 in real time, and compares the voltage collected by the non-inverting input terminal with the low level of the inverting input terminal. The signals are compared. When the voltage of the energy storage component 102 collected at the non-inverting input terminal is greater than the low-level signal at the inverting input terminal, it proves that the power supply input interface 11 has completed the slow charging of the energy storage component 102 through the slow charging current limiting component 101. The voltage comparator U1 triggers the first and second ports of the slow charging switch to be cut off, and triggers the first and second ports of the fast charging switch to be turned on, so that the power supply input interface 11 can quickly charge the energy storage component 102 through the fast charging switch. The comparison result between the voltage collected at the non-inverting input terminal of the voltage comparator U1 and the low-level signal received at the inverting input terminal is used as the basis for judging whether the slow charging of the energy storage component 102 is completed. This enables accurate judgment of the energy storage status of the energy storage component 102, avoids switching the energy storage discharge circuit from the slow charging line to the fast charging line too early or too late, improves the stability of the energy storage discharge circuit, and ensures the energy storage speed of the energy storage discharge circuit.

[0020] In one embodiment, such as Figure 2 As shown, the energy storage and discharge circuit provided in this embodiment further includes: a first slow charge control switch device M2, a second slow charge control switch device M3, and a third slow charge control switch device M4; The control terminal of the first slow-charge control switch M2 is connected to the enable control unit 15 and the first port of the second slow-charge control switch M3. The first port of the first slow-charge control switch M2 is grounded. The second port of the first slow-charge control switch M2 is connected to the control terminal of the third slow-charge control switch M4 and the first port of the third slow-charge control switch M4. The first port of the third slow-charge control switch M4 is used to connect to an external DC power supply. The second port of the third slow-charge control switch M4 is connected to the control terminal of the slow-charge switch M1 and grounded. The enable control unit 15 is used to output a high-level signal to the control terminal of the first slow-charge control switch device M2 when it receives a signal to start charging, triggering the first slow-charge control switch device M2 to turn on, so that the control terminal of the third slow-charge control switch device M4 receives a low-level signal, triggering the third slow-charge control switch device M4 to turn on, so that the control terminal of the slow-charge switch device M1 receives a high-level signal, triggering the slow-charge switch device M1 to turn 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 second port of the second slow-charge control switch M3 is grounded, and the control terminal of the second slow-charge control switch M3 is connected to the output terminal of the voltage comparator U1. When the voltage of the energy storage component 102 is detected to be greater than the low-level signal received at the inverting input terminal of the voltage comparator U1, the output terminal of the voltage comparator U1 outputs a high-level signal to the control terminal of the second slow-charge control switch M3, triggering the second slow-charge control switch M3 to turn on, causing the control terminal of the first slow-charge control switch M2 to receive a low-level signal, triggering the first slow-charge control switch M2 to turn off, causing the control terminal of the third slow-charge control switch M4 to receive a high-level signal, triggering the third slow-charge control switch M4 to turn off, causing the control terminal of the slow-charge switch M1 to receive a low-level signal, triggering the slow-charge switch M1 to turn off, so that the power supply input interface 11 stops charging the energy storage component 102 through the slow-charge current limiting component 101 and the slow-charge switch M1; like Figure 2 As shown, the first slow charge control switch M2 is an NMOS transistor; the second slow charge control switch M3 is an NMOS transistor; and the third slow charge control switch M4 is a PMOS transistor. The control terminal (i.e., the gate of the first slow-charge control switch device M2) of the first slow-charge control switch device M2 is connected to the enable control unit 15 and the first port (i.e., the drain of the second slow-charge control switch device M3). The first port (i.e., the source of the first slow-charge control switch device M2) of the first slow-charge control switch device M2 is grounded. The second port (i.e., the drain of the first slow-charge control switch device M2) of the first slow-charge control switch device M2 is connected to the control terminal (i.e., the gate of the third slow-charge control switch device M4) and the first port (i.e., the source of the third slow-charge control switch device M4) of the third slow-charge control switch device M4. The first port of the third slow-charge control switch device M4 is used to connect an external DC power supply. The second port (i.e., the drain of the third slow-charge control switch device M4) of the third slow-charge control switch device M4 is connected to the gate of the slow-charge switch device M1 and grounded. 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 M2. Since the first slow-charge control switch 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 M4 is grounded through the drain and source of the first slow-charge control switch M2. The gate of the third slow-charge control switch M4 receives a low-level signal. Since the third slow-charge control switch M4 is a PMOS transistor, the third slow-charge control switch... When device M4 receives a low-level signal at its gate, 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 device M1 is an NMOS transistor, it turns on when its gate receives a high-level signal. At this time, the power supply VIN can then pass through resistors R201, R202, and R203, and the drain and source of the slow-charge switch device M1 to the energy storage component 102 (i.e., energy storage unit 14). The second port (i.e., the source of the second slow charge control switch device M3) is grounded, and the control terminal (i.e., the gate of the second slow charge control switch device M3) is connected to the output terminal (i.e., pin 1 of the voltage comparator U1). When the voltage of the energy storage component 102 is detected to be greater than the low-level signal (2.5V reference voltage) received at the non-inverting input terminal (i.e., pin 3 of voltage comparator U1) of voltage comparator U1, the output terminal of voltage comparator U1 outputs a high-level signal to the gate of the second slow-charge control switch device M3, triggering the second slow-charge control switch device M3 to turn on, causing the gate of the first slow-charge control switch device M2 to receive a low-level signal, triggering the first slow-charge control switch device M2 to turn off, causing the gate of the third slow-charge control switch device M4 to receive a high-level signal, triggering the third slow-charge control switch device M4 to turn off, causing the gate of the slow-charge switch device M1 to receive a low-level signal, triggering the slow-charge switch device M1 to turn off, so that the power supply input interface 11 stops charging the energy storage component 102 through the slow-charge current limiting component 101 and the slow-charge switch device M1; like Figure 2 As shown, the slow-charging switch unit 13 also includes: resistors R204, R205, R206, R207, R208, capacitors C201 and C202. The drain of the slow-charge switching device M1 is connected to the output terminal of the slow-charge current limiting component 101. The source of the slow-charge switching device M1 is connected to the energy storage component 102 (i.e., the anode of capacitor C203 and one end of capacitor C204). The gate of the slow-charge switching device M1 (pin G of the NMOS transistor) is connected to one end of resistor R207. The other end of resistor R207 is connected to one end of capacitor C202, one end of resistor R206, and the drain of the third slow-charge control switching device M4 (pin D of the PMOS transistor). The other end of capacitor C202 and the other end of resistor R206 are connected in parallel and then grounded. The source of the third slow-charge control switching device M4 (pin S of the PMOS transistor) is connected to one end of resistor R205 and then externally connected to... The DC power supply VCC, the gate (PMOS pin G) of the third slow charge control switch M4 is connected to the drain (NMOS pin D) of the first slow charge control switch M2 and the other end of resistor R205. The source (NMOS pin S) of the first slow charge control switch M2 is grounded. The gate (NMOS pin G) of the first slow charge control switch M2 is connected to one end of resistor R204, one end of capacitor C201 and the drain (NMOS pin D) of the second slow charge control switch M3. The other end of capacitor C201 is grounded. The other end of resistor R204 is connected to one end of resistor R209 and one end of resistor R210 in the enable control unit 15.

[0021] In one embodiment, such as Figure 2 As shown, the energy storage and discharge circuit provided in this embodiment further includes: a first fast charging control switch device M6 and a second fast charging control switch device M7; The control terminal of the first fast charging control switch M6 is connected to the output terminal of the voltage comparator U1. The first port of the first fast charging control switch M6 is grounded. The second port of the first fast charging control switch M6 is connected to the control terminal of the second fast charging control switch M7 and the first port of the second fast charging control switch M7. The first port of the second fast charging control switch M7 is used to connect an external DC power supply. The second port of the second fast charging control switch M7 is connected to the control terminal of the fast charging switch M5 and grounded. When the voltage of the energy storage component 102 is detected to be greater than the low-level signal received at the inverting input terminal of the voltage comparator U1, the output terminal of the voltage comparator U1 outputs a high-level signal to the control terminal of the first fast charging control switch M6, triggering the first fast charging control switch M6 to conduct, causing the control terminal of the second fast charging control switch M7 to receive a low-level signal, triggering the second fast charging control switch M7 to conduct, causing the control terminal of the fast charging switch M5 to receive a high-level signal, triggering the fast charging switch M5 to conduct, so that the power supply input interface 11 stops charging the energy storage component 102 through the fast charging switch M5; like Figure 2 As shown, the first fast charging control switch M6 is an NMOS transistor; the second fast charging control switch M7 is a PMOS transistor. The control terminal (i.e., the gate of the first fast charging control switch M6) is connected to the output terminal of the voltage comparator U1. The first port (i.e., the source of the first fast charging control switch M6) is grounded. The second port (i.e., the drain of the first fast charging control switch M6) is connected to the control terminal (i.e., the gate of the second fast charging control switch M7) and the first port (i.e., the source of the second fast charging control switch M7). The first port (i.e., the source of the second fast charging control switch M7) is used to connect an external DC power supply VCC. The second port (i.e., the drain of the second fast charging control switch M7) is connected to the gate of the fast charging switch M5 and grounded. When the voltage of the energy storage component 102 is detected to be greater than the low-level signal received at the inverting input of the voltage comparator U1, the output of the voltage comparator U1 outputs a high-level signal to the gate of the first fast-charging control switch M6. Since the first fast-charging control switch 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 M7 is grounded through the drain and source of the first fast-charging control switch M6, and the gate of the second fast-charging control switch M7 receives the high-level signal. When the gate of the second fast charging control switch M7 receives a low-level signal, the DC power supply VCC connected to the source of the second fast charging control switch M7 outputs a high-level signal to the gate of the fast charging switch M5. When the gate of the fast charging switch M5 receives a high-level signal, 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 M5. like Figure 2 As shown, the fast charging switch unit 17 also includes: resistors R218, R219, R220, R221, capacitors C210 and C211; The output of voltage comparator U1 is connected to one end of resistor R218. 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 source of the second fast-charging control switch M7. 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 power input interface 11. The source of fast charging switch M5 is connected to the anode of capacitor C203 and one end of capacitor C204.

[0022] In one embodiment, such as Figure 2 As shown, the energy storage and discharge circuit provided in this embodiment also includes: fuse F2 and varistor R239; The input terminal of fuse F2 is connected to the power input interface 11, the output terminal of fuse F2 is connected to the input terminal of varistor R239, and the output terminal of varistor R239 is grounded. The aforementioned fuse F2 is used to blow when the current in the power supply line is too high. When the voltage in the circuit is too high, 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. like Figure 3 As shown, the energy storage discharge circuit provided in this embodiment of the invention further includes a protection unit 24, which 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, and the other end of the fuse F2 and one end of the varistor R239 serve as the output terminal of the protection unit 24 and are connected to the input terminal of the slow charging unit 12 (i.e., one end of the resistor R201); the other end of the varistor R239 is grounded.

[0023] In one embodiment, such as Figure 2 As shown, the energy storage and discharge circuit provided in this embodiment also includes: a filter capacitor C227; The input terminal of the filter capacitor C227 is connected to the power input interface 11, and the output terminal of the filter capacitor C227 is connected to the output terminal of the varistor R239. like Figure 3 As shown, the energy storage and discharge circuit provided in this embodiment of the invention also includes a filter unit 25; the input terminal of the filter unit 25 (i.e., one end of the filter capacitor C227) is connected to the power supply input interface 11 and the input terminal of the protection unit 24 (i.e., one end of the fuse F2), and the output terminal of the filter unit 25 (i.e., the other end of the filter capacitor C227) is connected to the other end of the varistor R239 and then grounded. The filter unit 25 filters the current in the circuit through the filter capacitor C227.

[0024] In one embodiment, such as Figure 2 As shown, the energy storage discharge circuit provided in this embodiment also includes: a reverse connection protection switch device M15; The first port of the reverse connection protection switch M15 is connected to the power input interface 11, the second port of the reverse connection protection switch M15 is connected to the input terminal of the slow charge current limiting component 101, and the control terminal of the reverse connection protection switch M15 is grounded. The first and second ports of the reverse connection protection switch M15 are used to conduct when the power input interface 11 is positively connected to the external power supply VIN, and to disconnect when the power input interface 11 is positively connected to the external power supply VIN. like Figure 2As shown, the reverse connection protection switch M15 (a PMOS transistor) has its first port (i.e., the source of the reverse connection protection switch M15) connected to the power supply input interface 11, its second port (i.e., the drain of the reverse connection protection switch M15) connected to the input terminal of the slow charge current limiting component 101, and its control terminal (i.e., the gate of the reverse connection protection switch M15) 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 off. 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. like Figure 3 As shown, the energy storage discharge circuit provided in this embodiment of the invention also includes a reverse connection protection 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 input terminal of the slow charging unit 12. The reverse connection protection unit 26 is used to turn on when the power input interface 11 is connected to the external power supply VIN in the positive direction, and to turn off when the power input interface 11 is connected to the external power supply in the reverse direction. The reverse connection protection unit 26 includes a reverse connection protection switch M15 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. 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.

[0025] In one embodiment, such as Figure 2 As shown, the energy storage and discharge circuit provided in this embodiment also includes: a step-down voltage regulator U2 and an auxiliary energy storage component 102; The input terminal of the step-down regulator U2 is connected to the power input interface 11, and the output terminal of the step-down regulator U2 is connected to the auxiliary energy storage component 102. The power input interface 11 charges the auxiliary energy storage component 102 through the step-down regulator U2; wherein, the step-down regulator U2 is used to step down and regulate the voltage received at the input terminal and then output it through the output terminal; like Figure 3 As shown, the energy storage and discharge circuit provided in this embodiment of the invention also includes an auxiliary unit 23, which is connected to the power supply input interface 11. The auxiliary unit 23 is used to store voltage when the energy storage unit 14 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 3 As shown, the energy storage discharge circuit provided in this embodiment further includes: a discharge switch unit 20; The control terminal of the discharge switch unit 20 is connected to the enable control unit 15, the first port of the discharge switch unit 20 is connected to the energy storage component 102, and the second port of the discharge switch unit 20 is used for grounding. The enable control unit 15 is used to output a low-level signal to the control terminal of the detection switch device when a signal to stop charging is received, so as to control the detection switch device to be in the on state and make the inverting input terminal of the voltage comparator U1 receive a high-level signal. The voltage comparator U1 is used to trigger the first and second ports of the fast charging switch to be turned off when a high-level signal is received at the inverting input terminal, so that the power supply input interface 11 stops charging the energy storage component 102 through the fast charging switch. 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 turned on, so that the energy storage component 102 releases electrical energy to the discharge switch unit 20. like Figure 2 As shown, the discharge switch unit 20 includes: a discharge switch device M11 (a PMOS transistor); the control terminal of the discharge switch unit 20 (i.e., the gate of the discharge switch device M11) is connected to the enable control unit 15, the first port of the discharge switch unit 20 (i.e., the source of the discharge switch device M11) is connected to the energy storage component 102, and the second port of the discharge switch unit 20 (i.e., the drain of the discharge switch device M11) is used for grounding. 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 reference voltage at the inverting input of the voltage comparator U1. Therefore, the output of the voltage comparator U1 continuously outputs a low-level signal to the base of the NPN transistor Q201. The NPN transistor Q201 is turned off when its base receives the low-level signal. The emitter of transistor Q201 sends a low-level signal to the gate of the second slow-charge control switch M3 and the gate of the first fast-charge control switch M6. When the gate of the second slow-charge control switch M3 receives the low-level signal from the emitter of NPN transistor Q201, the second slow-charge control switch M3 is turned off. At this time, 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 supply 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 the low-level signal from the emitter of NPN transistor Q201, the fast-charge switch M5 is turned off, so that the power supply input interface 11 stops charging the energy storage unit 14 through the fast-charge switch unit. 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 turned on, so that the energy storage component 102 releases electrical energy to the discharge switch unit 20. 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 discharge switch device M11. like Figure 3 As shown, the energy storage discharge circuit provided in this embodiment further includes: a slow discharge unit 19; the input terminal of the slow discharge unit 19 is connected to the energy storage component 102, and the output terminal of the slow discharge unit 19 is connected to the first port of the discharge switch unit 20; wherein, the slow discharge unit 19 is used to limit the current in the discharge circuit to avoid damage to the device; 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 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 of discharge controller M12. The other end of capacitor C214 is grounded. The drain of discharge controller M12 is used to connect to an external DC power supply VCC. The source of discharge controller 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 of discharge switch device M11. The PMOS transistor's pin G is connected to the drain of the discharge switch M11. The drain of the discharge switch M11 is grounded. The source of the discharge switch M11 is connected to one end of the resistor R229. The other end of the resistor R229 is connected to one end of the resistor R228. The other end of the resistor R228 is connected to one end of the resistor R227. The other end of the resistor R227 is connected to the energy storage component 102 (the anode of the polarized capacitor C203 and one end of the 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 controller M12 through resistor R230. Since the discharge controller 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 controller 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 controller M12 through resistor R230. Since the discharge controller 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. Since the discharge switch device M11 is a PMOS transistor... The discharge switch M11 is 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 stabilization, current limiting, clamping and filtering.

[0027] In one embodiment, such as Figure 3 As shown, the energy storage discharge circuit provided in this embodiment further includes: a load switch unit 18; The control terminal of the load switch unit 18 is connected to the output terminal of the voltage comparator U1, 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, and the load switch unit 18 is in the off state. The voltage comparator U1 is used to charge the load switch unit 18 when it detects that the voltage of the energy storage component 102 is greater than the 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 voltage comparator U1 (i.e., 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 of the power supply switching device M8; the drain of the power supply switching device M8 is connected to the energy storage component 102 (i.e., the energy storage unit 14) as the first port of the load switching unit 18; and the source 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 voltage comparator U1 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 detected to be greater than the preset voltage threshold. When the energy stored in 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 unit 14 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 resistance value of resistor R201 in the slow charging unit 12 is... The resistance value of resistor R202 in the slow charging unit 12 is... The resistance value of resistor R203 in the slow charging unit 12. This is the capacitance value of capacitor C203 in energy storage unit 14; 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.

[0028] In one embodiment, such as Figure 3 As shown, the energy storage discharge circuit provided in this embodiment also includes: an anti-charging lock-up unit 22; The first port of the anti-charging lockout unit 22 is connected to the power input interface 11, the second port of the anti-charging lockout unit 22 is connected to the input terminal of the slow charging current limiting component 101, the control terminal of the anti-charging lockout unit 22 is used to connect an external DC power supply, and the anti-charging lockout unit 22 is in the conducting state. When the enable control unit 15 receives the signal to start charging, it controls the DC power supply to charge the anti-charging lock-up unit 22. When the energy stored in the anti-charging lock-up unit 22 reaches the anti-lock-up voltage threshold, it triggers the first port and the second port of the anti-charging lock-up unit 22 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 component. like Figure 2 As shown, the anti-charging lock-up unit 22 includes: an anti-lock-up switching device M14 (a PMOS transistor) and an anti-lock-up delay component; the first port of the anti-charging lock-up unit 22 (i.e., the source of the anti-lock-up switching device M14) is connected to the power supply input interface 11, the second port of the anti-charging lock-up unit 22 (i.e., the drain of the anti-lock-up switching device M14) is connected to the input terminal of the slow-charge current limiting component 101 (i.e., one end of the resistor R201), the control terminal of the anti-charging lock-up unit 22 (i.e., the gate of the anti-lock-up switching device M14) is connected to the output terminal of the anti-lock-up delay component, the input terminal of the anti-lock-up delay component is used to connect an external DC power supply VCC, and the anti-charging lock-up unit 22 is in the on state; 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. 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 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 component 102 (i.e., the energy storage unit 14) through the slow charging current limiting component 101 (i.e., the slow charging unit 12) and the buffer switch device M1 (i.e., the slow charging switch unit 13). like Figure 2 As shown, the anti-charging lock-up unit 22 also includes: diode D2, resistor R234, resistor R235, resistor R236, and capacitor C217 (a polarized capacitor); wherein, the anti-lock-up delay component is composed of resistor R234 and capacitor C217; 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 resistor R234. The other end of resistor R234 is connected to one end of resistor R235, one end of resistor R236, and the anode of capacitor C217. The other end of resistor R235 is connected to the cathode of 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 switch device M14. The source (pin S of PMOS transistor) of anti-lock-up switch device M14 is connected to the power input interface 11. The drain (pin D of PMOS transistor) of anti-lock-up switch 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 capacitor C217 through the resistor R234. Only when the energy stored in the capacitor C217 reaches the anti-lock-up voltage threshold (which can be set to 48V) will the capacitor C217 output 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, it disconnects when its gate receives a high-level signal, thus preventing the power supply VIN connected to the power supply input interface 11 from charging the energy storage unit 14 through the slow charging unit 12 and the slow charging switch unit 13. This avoids the energy storage discharge circuit from continuously charging the energy storage unit 14 through the slow charging unit 12 and the slow charging switch unit 13, thereby effectively preventing the problem of repeated slow charging caused by the load being connected, which causes the resistor in the buffer unit to work continuously and generate heat and loss. Furthermore, the resistor R234 and the capacitor C217 in the anti-lock-up delay component satisfy the following relationship: ; in, To prevent the resistor R234 in the delay component from locking up, The capacitance value of capacitor C217 in the anti-lock-up delay component; Based on the resistance value of resistor R234 and the capacitance value of capacitor C217, the time constant corresponding to the anti-lock-up delay component can be calculated. The time constants corresponding to the anti-lock-up delay component, the power supply delay component, and the time constants during 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 completely completed. This ensures that the voltage stored in the energy storage unit 14 meets the requirements for powering a large load and avoids the situation where the energy storage unit 14 can only supply power to a small load due to incomplete energy storage. Among them, diode D2, resistor R235, and resistor R236 together play the roles of current limiting, clamping, and reverse connection protection.

[0029] The present invention provides a specific embodiment of energy storage and discharge using the above-described energy storage and discharge circuit applied to a laser therapy device, as follows: When the energy storage and discharge circuit needs to store energy, the enable control unit 15 outputs a high-level signal to the gate of the first slow-charge control switch device M2 in the slow-charge switch unit 13, the gate of the discharge control 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-charge control switch device M2 receives the high-level signal, it triggers the slow-charge switch device M1 to conduct, and 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-charge unit 12 and the slow-charge switch unit 13; the discharge control device When the gate of M12 receives a high-level signal, it controls the discharge switch M11 to remain open, preventing the energy storage unit 14 from discharging. The detection switch 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 the voltage comparator U1. The non-inverting input of the voltage comparator U1 continuously monitors the voltage stored in the energy storage unit 14. When the voltage stored in the energy storage unit 14 exceeds a preset voltage threshold, the output of the voltage comparator U1 outputs a high-level signal to the NPN transistor Q. At the base of 201, 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. When the gate of the first fast-charging control switch device M6 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. 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 energy storage discharge circuit provided in this embodiment of the invention is further provided with an anti-charging lock-up unit 22 between the power supply input interface 11 and the slow charging unit 12. When the power supply input interface 11 starts slow charging of the energy storage unit 14, the DC power supply connected to the discharge lock-up unit starts to output a high-level signal to the capacitor C217. When the capacitor C217 receives the high-level signal, it starts to store energy. When the energy stored by the 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, so as to avoid the situation where the energy storage unit 14 is continuously slow-charged due to circuit failure. When the energy storage discharge circuit needs to discharge, the enable control unit 15 outputs a low-level signal to the gate of the first slow-charge control switch device M2 in the slow-charge switch unit 13, the gate of the discharge control 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-charge control switch device M2 receives a low-level signal, it triggers the slow-charge switch device M1 to open, and the power supply input interface 11 stops slow-charging the energy storage unit 14 through the slow-charge unit 12 and the slow-charge switch unit 13. When the gate of the discharge control 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 serves as the base of the inverting input of the voltage comparator U1. The voltage stored in the energy storage unit 14, detected in real time at the non-inverting input of voltage comparator U1, cannot exceed the voltage value of the DC power supply VCC. Therefore, the output of voltage comparator U1 outputs a low-level signal to the base of NPN transistor Q201, causing Q201 to turn off. The emitter of Q201 outputs a low-level signal to capacitor C212 in the load switch unit 18 and the gate of the first fast-charging control switch M6 in the fast-charging switch unit. When the gate of the first fast-charging control switch M6 receives the low-level signal, it controls the fast-charging switch M5 to turn off. At this time, the power 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 M9 in the load switch unit 18 receives the low-level signal, it triggers the power supply switch 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. An energy storage and discharge circuit for use in a laser therapy device, characterized in that, It includes a power input interface, a slow-charge current limiting component, a slow-charge switching device, an energy storage component, an enable control unit, a voltage comparator, a fast-charge switching device, and a detection switching device; The power input interface is connected to the input terminal of the slow charging current limiting component and the first port of the fast charging switch device. The output terminal of the slow charging current limiting component is connected to the first port of the slow charging switch device. The slow charging 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 slow-charge current limiting component and the slow-charge switch device; The output terminal of the voltage comparator is connected to the control terminal of the fast charging switch and the control terminal of the slow charging switch, and the second port of the fast charging switch is connected to the energy storage component; wherein, the voltage comparator is used to detect the voltage of the energy storage component; 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 first port of the detection switch device, the second port of the detection switch device is connected to an external DC power supply, and the control terminal of the detection switch device is connected to the enable control unit. The enable control unit is used to output a high-level signal to the control terminal of the detection switch device when it receives a signal to start charging, so as to control the detection switch device to be in the off state and make the inverting input terminal of the voltage comparator receive a low-level signal. The voltage comparator is used to trigger the first and second ports of the slow-charge switch to turn off and the first and second ports of the fast-charge switch to turn on when the voltage of the energy storage component is detected at the non-inverting input terminal to be greater than the low-level signal received at the inverting input terminal, so that the power supply input interface charges the energy storage component through the fast-charge switch.

2. The energy storage and discharge circuit according to claim 1, characterized in that, Also includes: First slow charge control switch device, second slow charge control switch device and third slow charge control switch device; The control terminal of the first slow-charge control switch is connected to the enable control unit and the first port of the second slow-charge control switch. The first port of the first slow-charge control switch is grounded. The second port of the first slow-charge control switch is connected to the control terminal and the first port of the third slow-charge control switch. The first port of the third slow-charge control switch is used to connect to an external DC power supply. The second port of the third slow-charge control switch is connected to the control terminal of the slow-charge switch and grounded. The enable control unit is used to output a high-level signal to the control terminal of the first slow-charge control switch when it receives a signal to start charging, triggering the first slow-charge control switch to turn on, so that the control terminal of the third slow-charge control switch receives a low-level signal, triggering the third slow-charge control switch to turn on, so that the control terminal of the slow-charge switch receives a high-level signal, triggering the slow-charge switch to turn on, so that the power supply input interface charges the energy storage component through the slow-charge current limiting component and the slow-charge switch; The second port of the second slow-charge control switch is grounded, and the control terminal of the second slow-charge control switch is connected to the output terminal of the voltage comparator. When the voltage of the energy storage component is detected to be greater than the low-level signal received at the inverting input of the voltage comparator, the output of the voltage comparator outputs a high-level signal to the control terminal of the second slow-charge control switch, triggering the second slow-charge control switch to turn on. This causes the control terminal of the first slow-charge control switch to receive a low-level signal, triggering the first slow-charge control switch to turn off. Similarly, the control terminal of the third slow-charge control switch receives a high-level signal, triggering the third slow-charge control switch to turn off. Finally, the control terminal of the slow-charge switch receives a low-level signal, triggering the slow-charge switch to turn off, thereby stopping the power supply input interface from charging the energy storage component through the slow-charge current limiting component and the slow-charge switch.

3. The energy storage and discharge circuit according to claim 1, characterized in that, Also includes: First fast charging control switch device and second fast charging control switch device; The control terminal of the first fast charging control switch is connected to the output terminal of the voltage comparator. The first port of the first fast charging control switch is grounded. The second port of the first fast charging control switch is connected to the control terminal of the second fast charging control switch and the first port of the second fast charging control switch. The first port of the second fast charging control switch is used to connect to an external DC power supply. The second port of the second fast charging control switch is connected to the control terminal of the fast charging switch and grounded. When the voltage of the energy storage component is detected to be greater than the low-level signal received at the inverting input of the voltage comparator, the output of the voltage comparator outputs a high-level signal to the control terminal of the first fast-charging control switch, triggering the first fast-charging control switch to turn on. This causes the control terminal of the second fast-charging control switch to receive a low-level signal, triggering the second fast-charging control switch to turn on. This causes the control terminal of the fast-charging switch to receive a high-level signal, triggering the fast-charging switch to turn on, thereby stopping the power supply input interface from charging the energy storage component through the fast-charging switch.

4. The energy storage and discharge circuit according to claim 1, characterized in that, Also includes: Fuse and varistor; The input terminal of the fuse is connected to the power input interface, the output terminal of the fuse is connected to the input terminal of the varistor, and the output terminal of the varistor is grounded.

5. The energy storage and discharge circuit according to claim 4, characterized in that, It also includes: filter capacitors; The input terminal of the filter capacitor is connected to the power supply input interface, and the output terminal of the filter capacitor is connected to the output terminal of the varistor.

6. The energy storage and discharge circuit according to claim 1, characterized in that, Also includes: Reverse polarity protection switching devices; The first port of the reverse connection protection switch is connected to the power supply input interface, the second port of the reverse connection protection switch is connected to the input terminal of the slow charge current limiting component, and the control terminal of the reverse connection protection switch is grounded. The first and second ports of the reverse connection protection switch are used to conduct when the power input interface is positively connected to an external power supply, and to disconnect when the power input interface is positively connected to an external power supply.

7. The energy storage and discharge circuit according to claim 1, characterized in that, Also includes: Step-down voltage regulators and auxiliary energy storage components; The input terminal of the step-down voltage regulator is connected to the power supply input interface, and the output terminal of the step-down voltage regulator is connected to the auxiliary energy storage component. The power input interface charges the auxiliary energy storage component through the step-down regulator; wherein, the step-down regulator is used to step down and regulate the voltage received at the input terminal and then output it through the output terminal.

8. The energy storage and discharge circuit according to claim 1, characterized in that, Also includes: Discharge switch unit; The control terminal of the discharge switch unit is connected to the enable control unit, the first port of the discharge switch unit is connected to the energy storage component, and the second port of the discharge switch unit is used for grounding. The enable control unit is used to output a low-level signal to the control terminal of the detection switch device when it receives a signal to stop charging, so as to control the detection switch device to be in the on state and make the inverting input terminal of the voltage comparator receive a high-level signal. The voltage comparator is used to trigger the first and second ports of the fast charging switch to be turned off when a high-level signal is received at the inverting input terminal, so that the power supply input interface stops charging the energy storage component through the fast charging switch. 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.

9. The energy storage and discharge circuit 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 voltage comparator, 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 voltage comparator is used to charge the load switching 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 switching unit reaches the power supply voltage threshold, it triggers the first port and the second port of the load switching unit to conduct, so that the energy storage component supplies power to the load through the load switching unit.

10. The energy storage and discharge circuit according to claim 1, characterized in that, Also includes: Anti-charging lock-up unit; The first port of the anti-charging lock-up unit is connected to the power input interface, the second port of the anti-charging lock-up unit is connected to the input terminal of the slow charging current limiting component, the control terminal of the anti-charging lock-up unit is used to connect an external DC power supply, and the anti-charging lock-up unit is in the conducting state. When the enable control unit receives a signal to start charging, it controls the DC power supply to charge the anti-charging lock-up unit. When the energy stored in the anti-charging lock-up unit reaches the anti-lock-up voltage threshold, it triggers the first port and the second port of the anti-charging lock-up unit to disconnect, so as to stop the power supply input interface from supplying power to the energy storage component through the slow charging current limiting component and the slow charging switch component.

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