A power conversion module based on high voltage input

Abstract

The disclosure provides a power conversion module based on high-voltage input, comprising: a first transformer, a first switching unit, a first rectifying unit, a second rectifying unit and a first control unit; wherein a primary side winding first end of the first transformer is connected with a power output end of a high-voltage power supply, and the first switching unit is connected in series between a primary side winding second end of the first transformer and the ground; a power input end of the first rectifying unit is connected with a first secondary side winding of the first transformer, and a power input end of the second rectifying unit is connected with a second secondary side winding of the first transformer; and the first control unit is used for controlling the on-off of the first switching unit. In the power conversion module based on high-voltage input, voltage conversion is realized, and high-voltage power supply can directly supply power to the capstan in cooperation with other modules, so that devices and lines arranged between the high-voltage power supply and the low-voltage power supply are saved.

Description

Technical Field

[0001] This disclosure relates to the field of power conversion technology, and in particular to a power conversion module based on high voltage input. Background Technology

[0002] A winch is a mechanical device that uses a drum to wind ropes or cables to pull, lift, or move heavy objects. It is widely used in engineering, navigation, off-road, rescue, and other fields.

[0003] The control power supply of a high-voltage winch needs to be connected to the low-voltage power supply in a vehicle or other carrier, and cannot directly use the high-voltage power supply in the carrier. This necessitates the configuration of numerous voltage conversion devices and connecting lines between the high-voltage and low-voltage power supplies, increasing the power supply cost of the winch and raising the failure rate, thus affecting the safe and stable operation of the winch. Therefore, this paper proposes a power conversion module based on high-voltage input for voltage conversion between the high-voltage power supply and the winch. Summary of the Invention

[0004] This disclosure aims to at least partially address one of the technical problems in the related art.

[0005] Therefore, the purpose of this disclosure is to provide a power conversion module based on high voltage input.

[0006] To achieve the above objectives, this disclosure provides a power conversion module based on high-voltage input, comprising: a first transformer, a first switching unit, a first rectifier unit, a second rectifier unit, and a first control unit; wherein, the first terminal of the primary winding of the first transformer is connected to the power output terminal of the high-voltage power supply, and the first switching unit is connected in series between the second terminal of the primary winding of the first transformer and ground; the power input terminal of the first rectifier unit is connected to the first secondary winding of the first transformer, and the power input terminal of the second rectifier unit is connected to the second secondary winding of the first transformer; the power input terminal of the first control unit is connected to the third secondary winding of the first transformer, and the control output terminal of the first control unit is connected to the control input terminal of the first switching unit, wherein the first control unit is used to control the on / off state of the first switching unit.

[0007] Optionally, the first switching unit includes: a first MOSFET; wherein the first MOSFET is N-type, and the drain of the first MOSFET is connected to the second terminal of the primary winding of the first transformer, the source of the first MOSFET is grounded, and the gate of the first MOSFET serves as the control input terminal of the first switching unit and is connected to the control output terminal of the first control unit.

[0008] Optionally, the first control unit includes: a first control chip, a seventh resistor, an eighth resistor, and a tenth capacitor; wherein, the power input pin of the first control chip serves as the power input terminal of the first control unit and is connected to the first end of the third secondary winding of the first transformer, and the second end of the third secondary winding of the first transformer is grounded; the first end of the seventh resistor is connected to the drive output pin of the first control chip, and the second end of the seventh resistor serves as the control output terminal of the first control unit and is connected to the gate of the first MOS transistor; the first end of the eighth resistor is connected to the reference voltage pin of the first control chip, and the second end of the eighth resistor is connected to the oscillator timing resistor-capacitor pin of the first control chip; the first end of the tenth capacitor is connected to the second end of the eighth resistor, and the second end of the tenth capacitor is grounded.

[0009] Optionally, the first control unit further includes: an eleventh capacitor, a third diode, and a twelfth capacitor; wherein, the first terminal of the eleventh capacitor is connected to the power input pin of the first control chip, and the second terminal of the eleventh capacitor is grounded; the third diode is connected in series between the power input pin of the first control chip and the first terminal of the third secondary winding of the first transformer, and the anode of the third diode is connected to the first terminal of the third secondary winding of the first transformer, and the cathode of the third diode is connected to the power input pin of the first control chip; the first terminal of the twelfth capacitor is connected to the reference voltage pin of the first control chip, and the second terminal of the twelfth capacitor is grounded.

[0010] Optionally, the first control unit further includes: a thirteenth capacitor and a ninth resistor; wherein, the first end of the thirteenth capacitor is connected to the compensation pin of the first control chip, and the second end of the thirteenth capacitor is connected to the feedback pin of the first control chip; the first end of the ninth resistor is connected to the first end of the thirteenth capacitor, and the second end of the ninth resistor is connected to the second end of the thirteenth capacitor.

[0011] Optionally, the first control unit further includes: a fourteenth capacitor, a tenth resistor, an eleventh resistor, and a twelfth resistor; wherein the tenth resistor and the eleventh resistor are connected in series between the source of the first MOSFET and ground, and the first end of the tenth resistor is connected to the source of the first MOSFET, the first end of the eleventh resistor is connected to the second end of the tenth resistor, and the second end of the eleventh resistor is grounded; the first end of the fourteenth capacitor is connected to the current detection pin of the first control chip, and the second end of the fourteenth capacitor is grounded; the first end of the twelfth resistor is connected to the current detection pin of the first control chip, and the second end of the twelfth resistor is connected to the source of the first MOSFET.

[0012] Optionally, the first control unit further includes: a thirteenth resistor, a fourteenth resistor, and a fifteenth resistor; wherein, the first end of the thirteenth resistor is connected to the power output terminal of the second rectifier unit, and the second end of the thirteenth resistor is connected to the feedback pin of the first control chip; the first end of the fourteenth resistor is connected to the second end of the thirteenth resistor; the first end of the fifteenth resistor is connected to the second end of the fourteenth resistor; and the second end of the fifteenth resistor is grounded.

[0013] Optionally, the conversion module further includes: a starting unit, the starting unit comprising: a seventeenth resistor, an eighteenth resistor, a nineteenth resistor, a twentieth resistor, a twenty-first resistor, a twenty-fifth capacitor, a twenty-sixth capacitor, a twenty-seventh capacitor, a twenty-eighth capacitor, a twenty-ninth capacitor, a twenty-second resistor, a twenty-third resistor, a twenty-fourth resistor, a thirtieth capacitor, a seventh diode, and an eighth diode; wherein, the first end of the seventeenth resistor is connected to the power output terminal of the high-voltage power supply, and the first end of the eighteenth resistor is connected to the power input terminal of the first control unit; the first end of the nineteenth resistor is connected to the second end of the eighteenth resistor; the first end of the twentieth resistor is connected to the second end of the nineteenth resistor; the first end of the twenty-first resistor is connected to the second end of the twentieth resistor; and the second end of the twenty-first resistor is connected to the second end of the seventeenth resistor; the first end of the twenty-fifth capacitor is connected to the power output terminal of the high-voltage power supply, and the second end of the twenty-fifth capacitor is grounded; the first end of the twenty-sixth capacitor is connected to the second end of the twenty-fifth capacitor, and the second end of the twenty-sixth capacitor is grounded; the first end of the twenty-seventh capacitor is connected to the second end of the twenty-sixth capacitor. The second terminal of the 27th capacitor is connected to the power input terminal of the first control unit; the first terminal of the 28th capacitor is connected to the power output terminal of the high-voltage power supply, and the first terminal of the 29th capacitor is connected to the second terminal of the 28th capacitor, the second terminal of the 29th capacitor is connected to the second terminal of the 26th capacitor, the first terminal of the 22nd resistor is connected to the first terminal of the 28th capacitor, the second terminal of the 22nd resistor is connected to the second terminal of the 28th capacitor, the first terminal of the 23rd resistor is connected to the first terminal of the 29th capacitor, the second terminal of the 23rd resistor is connected to the second terminal of the 29th capacitor; the first terminal of the 24th resistor is connected to the second terminal of the 17th resistor, and the first terminal of the 30th capacitor is connected to the first terminal of the 24th resistor, the second terminal of the 30th capacitor is connected to the second terminal of the 24th resistor, the anode of the 7th diode is connected to the second terminal of the primary winding of the first transformer, the cathode of the 7th diode is connected to the second terminal of the 30th capacitor, the anode of the 8th diode is connected to the cathode of the 7th diode, and the cathode of the 8th diode is connected to the first terminal of the primary winding of the first transformer.

[0014] Optionally, the first rectifier unit includes: a fourth diode, a third inductor, a fifteenth capacitor, a first voltage regulator chip, a sixteenth capacitor, a seventeenth capacitor, an eighteenth capacitor, a nineteenth capacitor, and a twenty-fourth capacitor; wherein, the anode of the fourth diode is connected to the first terminal of the first secondary winding of the first transformer, and the first terminal of the third inductor is connected to the cathode of the fourth diode; the first terminal of the fifteenth capacitor is connected to the second terminal of the third inductor, and the second terminal of the fifteenth capacitor is connected to the second terminal of the first secondary winding of the first transformer and grounded; the input terminal of the first voltage regulator chip is connected to the first terminal of the fifteenth capacitor, and the ground terminal of the first voltage regulator chip is connected to the second terminal of the fifteenth capacitor; the output terminal of the first voltage regulator chip serves as the power output terminal of the first rectifier unit, outputting a first voltage; The first terminal of the sixteenth capacitor is connected to the first terminal of the third inductor, and the second terminal of the sixteenth capacitor is connected to the second terminal of the first secondary winding of the first transformer. The first terminal of the seventeenth capacitor is connected to the second terminal of the third inductor, and the second terminal of the seventeenth capacitor is connected to the second terminal of the sixteenth capacitor. The first terminal of the eighteenth capacitor is connected to the output terminal of the first voltage regulator chip, and the second terminal of the eighteenth capacitor is connected to the ground terminal of the first voltage regulator chip. The first terminal of the nineteenth capacitor is connected to the first terminal of the eighteenth capacitor, and the second terminal of the nineteenth capacitor is connected to the second terminal of the eighteenth capacitor. The first terminal of the twenty-fourth capacitor is connected to the first terminal of the primary winding of the first transformer, and the second terminal of the twenty-fourth capacitor is connected to the second terminal of the first secondary winding of the first transformer.

[0015] Optionally, the second rectifier unit includes: a fifth diode, a fourth inductor, a twentieth capacitor, a twenty-first capacitor, a twenty-second capacitor, a twenty-third capacitor, a sixth diode, and a sixteenth resistor; wherein, the anode of the fifth diode is connected to the first terminal of the second secondary winding of the first transformer, and the first terminal of the fourth inductor is connected to the cathode of the fifth diode; the first terminal of the twentieth capacitor is connected to the second terminal of the fourth inductor, and the second terminal of the twentieth capacitor is connected to the second terminal of the second secondary winding of the first transformer and grounded; the first terminal of the twentieth capacitor serves as the power output terminal of the second rectifier unit, outputting a second voltage; the first terminal of the twentieth capacitor is connected to the cathode of the fifth diode. The cathodes are connected, and the second terminal of the 21st capacitor is connected to the second terminal of the second secondary winding of the first transformer; the first terminal of the 22nd capacitor is connected to the first terminal of the 21st capacitor; the second terminal of the 22nd capacitor is connected to the second terminal of the 21st capacitor; the first terminal of the 23rd capacitor is connected to the first terminal of the 20th capacitor; the second terminal of the 23rd capacitor is connected to the second terminal of the 20th capacitor; the sixth diode is a light-emitting diode, and the anode of the sixth diode is connected to the first terminal of the 20th capacitor; the first terminal of the sixteenth resistor is connected to the cathode of the sixth diode; and the second terminal of the sixteenth resistor is connected to the second terminal of the 20th capacitor.

[0016] The technical solution provided in this disclosure may include the following beneficial effects:

[0017] By controlling the on / off state of the first switching unit through the first control unit, and through rectification by the first and second rectifier units, voltage conversion is achieved. Thus, when the power conversion module is applied to the power supply circuit between the high-voltage power supply and the winch, it can work with other modules to achieve direct power supply from the high-voltage power supply to the winch, thereby eliminating the need for components and lines between the high-voltage power supply and the low-voltage power supply, thereby reducing the cost and failure rate of the winch power supply and ensuring the safe and stable operation of the winch.

[0018] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0020] Figure 1 This is a circuit diagram of a power conversion module based on high-voltage input proposed in an embodiment of the present disclosure;

[0021] As shown in the figure: 901, first switching unit; 902, first rectifier unit; 903, second rectifier unit; 904, first control unit; 905, starting unit.

[0022] L3, the third inductor; L4, the fourth inductor;

[0023] R7, the seventh resistor; R8, the eighth resistor; R9, the ninth resistor; R10, the tenth resistor; R11, the eleventh resistor; R12, the twelfth resistor; R13, the thirteenth resistor; R14, the fourteenth resistor; R15, the fifteenth resistor; R16, the sixteenth resistor; R17, the seventeenth resistor; R18, the eighteenth resistor; R19, the nineteenth resistor; R20, the twentieth resistor; R21, the twenty-first resistor; R22, the twenty-second resistor; R23, the twenty-third resistor; R24, the twenty-fourth resistor.

[0024] C10, tenth capacitor; C11, eleventh capacitor; C12, twelfth capacitor; C13, thirteenth capacitor; C14, fourteenth capacitor; C15, fifteenth capacitor; C16, sixteenth capacitor; C17, seventeenth capacitor; C18, eighteenth capacitor; C19, nineteenth capacitor; C20, twentieth capacitor; C21, twenty-first capacitor; C22, twenty-second capacitor; C23, twenty-third capacitor.

[0025] D3, third diode; D4, fourth diode; D5, fifth diode; D6, sixth diode; D7, seventh diode; D8, eighth diode;

[0026] U3, the first control chip; U4, the first voltage regulator chip;

[0027] T1, the first transformer;

[0028] Q1, the first MOSFET. Detailed Implementation

[0029] Embodiments of this disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are used only to explain this disclosure, and should not be construed as limiting this disclosure. Rather, embodiments of this disclosure include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0030] like Figure 1As shown in the figure, this disclosure proposes a power conversion module based on high-voltage input, including: a first transformer T1, a first switching unit 901, a first rectifier unit 902, a second rectifier unit 903, and a first control unit 904. The first terminal of the primary winding of the first transformer T1 is connected to the power output terminal of the high-voltage power supply, and the first switching unit 901 is connected in series between the second terminal of the primary winding of the first transformer T1 and ground. The power input terminal of the first rectifier unit 902 is connected to the first secondary winding of the first transformer T1, the power input terminal of the second rectifier unit 903 is connected to the second secondary winding of the first transformer T1, and the power input terminal of the first control unit 904 is connected to the third secondary winding of the first transformer T1. The control output terminal of the first control unit 904 is connected to the control input terminal of the first switching unit 901, and the first control unit 904 is used to control the on / off state of the first switching unit 901.

[0031] Understandably, since the first terminal of the primary winding of the first transformer T1 is connected to the power output terminal of the high-voltage power supply, and the first switching unit 901 is connected in series between the second terminal of the primary winding of the first transformer T1 and ground, the first switching unit 901 can control the opening and closing of the path between the power output terminal of the high-voltage power supply and the primary winding of the first transformer T1. Furthermore, since the power input terminal of the first control unit 904 is connected to the third secondary winding of the first transformer T1, and the control output terminal of the first control unit 904 is connected to the control input terminal of the first switching unit 901, the first control unit 904 can control the power supply of the third secondary winding of the first transformer T1. The switching unit 901 controls the on / off state of the first switching unit, thereby realizing the high-frequency AC output of the first secondary winding and the second secondary winding of the first transformer T1. At the same time, since the power input terminal of the first rectifier unit 902 is connected to the first secondary winding of the first transformer T1, and the power input terminal of the second rectifier unit 903 is connected to the second secondary winding of the first transformer T1, the first rectifier unit 902 can rectify the high-frequency AC output from the first secondary winding of the first transformer T1 to output a first voltage, and the second rectifier unit 903 can rectify the high-frequency AC output from the second secondary winding of the first transformer T1 to output a second voltage.

[0032] By controlling the on / off state of the first switching unit 901 through the first control unit 904, and through rectification by the first rectifier unit 902 and the second rectifier unit 903, voltage conversion is achieved. Thus, when the power conversion module is applied to the power supply circuit between the high-voltage power supply and the winch, it can work with other modules to achieve direct power supply from the high-voltage power supply to the winch, thereby eliminating the need for components and lines between the high-voltage power supply and the low-voltage power supply, thereby reducing the cost and failure rate of the winch power supply and ensuring the safe and stable operation of the winch.

[0033] It should be noted that the first transformer T1 is used for voltage conversion. The first transformer T1 has a primary winding, a first secondary winding, a second secondary winding, and a third secondary winding. When the primary winding is energized, the first secondary winding, the second secondary winding, and the third secondary winding output three isolated power supplies respectively. The specific type of the first transformer T1 can be set according to actual needs and there are no restrictions on it.

[0034] The first switching unit 901 is used to control the opening and closing of the path between the high-voltage power supply output terminal and the primary winding of the first transformer T1. Through the opening and closing control, the high-frequency AC output of the secondary winding of the first transformer T1 is realized. The specific type of the first switching unit 901 can be set according to actual needs and there is no restriction. For example, the first switching unit 901 can be a MOSFET, etc.

[0035] The first rectifier unit 902 is used to rectify the electrical energy output from the first secondary winding of the first transformer T1, so as to output the first voltage required by the power supply circuit between the high voltage power supply and the winch. The specific type of the first rectifier unit 902 can be set according to actual needs and there is no restriction on it.

[0036] The second rectifier unit 903 is used to rectify the electrical energy output from the second secondary winding of the first transformer T1, so as to output the second voltage required by the power supply circuit between the high voltage power supply and the winch. The specific type of the second rectifier unit 903 can be set according to actual needs and there is no restriction on it.

[0037] The first control unit 904 is used to control the on / off state of the first switching unit 901, so that the power output terminal of the first rectifier unit 902 outputs a first voltage, and the power output terminal of the second rectifier unit 903 outputs a second voltage. The specific type of the first control unit 904 can be set according to actual needs and is not limited thereto.

[0038] The first voltage can be 5V, used to power the control module of the winch motor, and the second voltage can be 24V, used in conjunction with other modules to further convert it into the voltage required by the winch motor drive module.

[0039] The specific type of high-voltage power supply can be set according to actual needs and there are no restrictions on it. For example, the high-voltage power supply can be a vehicle power battery.

[0040] like Figure 1As shown, in some embodiments, the first switching unit 901 includes a first MOSFET Q1. The first MOSFET Q1 is N-type, and its drain is connected to the second terminal of the primary winding of the first transformer T1. Its source is grounded, and its gate serves as the control input terminal of the first switching unit 901 and is connected to the control output terminal of the first control unit 904.

[0041] Understandably, since the drain of the first MOSFET Q1 is connected to the second terminal of the primary winding of the first transformer T1, and the source of the first MOSFET Q1 is grounded, and the gate of the first MOSFET Q1 is connected to the control output terminal of the first control unit 904, the first control unit 904 can control the gate voltage of the first MOSFET Q1, thereby controlling the switching of the drain and source of the first MOSFET Q1, and thus realizing the high-frequency AC output of the first secondary winding, the second secondary winding and the third secondary winding of the first transformer T1.

[0042] It should be noted that the first MOSFET Q1, as a switching device, is turned on and off under the control of the first control unit 904, thereby realizing the high-frequency AC output of the first transformer T1. The specific type of the first MOSFET Q1 can be set according to actual needs and is not limited thereto.

[0043] A MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) is a semiconductor device that uses an electric field effect to control current. The gate (G) of a MOSFET is controlled to turn on the channel by applying a voltage, the source (S) is the input terminal by applying charge carriers (electrons or holes), and the drain (D) is the output terminal of the charge carriers.

[0044] like Figure 1As shown, in some embodiments, the first control unit 904 includes: a first control chip U3, a seventh resistor R7, an eighth resistor R8, and a tenth capacitor C10. The power input pin of the first control chip U3 serves as the power input terminal of the first control unit 904 and is connected to the first end of the third secondary winding of the first transformer T1. The second end of the third secondary winding of the first transformer T1 is grounded. The first end of the seventh resistor R7 is connected to the drive output pin of the first control chip U3, and the second end of the seventh resistor R7 serves as the control output terminal of the first control unit 904 and is connected to the gate of the first MOSFET Q1. The first end of the eighth resistor R8 is connected to the reference voltage pin of the first control chip U3, and the second end of the eighth resistor R8 is connected to the oscillator timing resistor / capacitor pin of the first control chip U3. The first end of the tenth capacitor C10 is connected to the second end of the eighth resistor R8, and the second end of the tenth capacitor C10 is grounded.

[0045] It is understandable that since the power input pin of the first control chip U3 is connected to the first end of the third secondary winding of the first transformer T1, the third secondary winding of the first transformer T1 can supply power to the first control chip U3, thereby ensuring the stable operation of the first control chip U3.

[0046] Since the first end of the seventh resistor R7 is connected to the drive output pin of the first control chip U3, and the second end of the seventh resistor R7 serves as the control output terminal of the first control unit 904 and is connected to the gate of the first MOS transistor Q1, the first control chip U3 can use the seventh resistor R7 to control the gate voltage of the first MOS transistor Q1, thereby controlling the on / off state of the drain and source of the first MOS transistor Q1.

[0047] Since the first end of the eighth resistor R8 is connected to the reference voltage pin of the first control chip U3, and the second end of the eighth resistor R8 is connected to the oscillator timing resistor and capacitor pin of the first control chip U3, the first end of the tenth capacitor C10 is connected to the second end of the eighth resistor R8, and the second end of the tenth capacitor C10 is grounded, the eighth resistor R8 and the tenth capacitor C10 form an oscillation circuit under the switching control of the first control chip U3, thereby ensuring the precise control of the first MOS transistor Q1 by the first control chip U3.

[0048] It should be noted that the first control chip U3 is used to control the on / off state of the first MOSFET Q1. The specific type of the first control chip U3 can be set according to actual needs and is not limited thereto. For example, the first control chip U3 can be a UC3842 chip. The first control chip U3 has a first pin (compensation pin), a second pin (feedback pin), a third pin (current detection pin), a fourth pin (oscillator timing resistor and capacitor pin), a fifth pin (ground pin), a sixth pin (drive output pin), a seventh pin (power input pin), and an eighth pin (reference voltage pin).

[0049] The specific type of the seventh resistor R7 can be set according to actual needs, and there are no restrictions on it.

[0050] The specific type of the eighth resistor R8 can be set according to actual needs and there are no restrictions on it. For example, the eighth resistor R8 can be 10K.

[0051] The specific type of the tenth capacitor C10 can be set according to actual needs and there is no restriction. For example, the tenth capacitor C10 can be 2200pF.

[0052] like Figure 1 As shown, in some embodiments, the first control unit 904 further includes an eleventh capacitor C11, a third diode D3, and a twelfth capacitor C12. The first terminal of the eleventh capacitor C11 is connected to the power input pin of the first control chip U3, and the second terminal of the eleventh capacitor C11 is grounded. The third diode D3 is connected in series between the power input pin of the first control chip U3 and the first terminal of the third secondary winding of the first transformer T1. The anode of the third diode D3 is connected to the first terminal of the third secondary winding of the first transformer T1, and the cathode of the third diode D3 is connected to the power input pin of the first control chip U3. The first terminal of the twelfth capacitor C12 is connected to the reference voltage pin of the first control chip U3, and the second terminal of the twelfth capacitor C12 is grounded.

[0053] It is understandable that, since the first end of the eleventh capacitor C11 is connected to the power input pin of the first control chip U3, and the second end of the eleventh capacitor C11 is grounded, the power input pin of the first control chip U3 can use the eleventh capacitor C11 to achieve voltage regulation and filtering, thereby ensuring the stable operation of the first control chip U3.

[0054] Since the anode of the third diode D3 is connected to the first end of the third secondary winding of the first transformer T1, and the cathode of the third diode D3 is connected to the power input pin of the first control chip U3, the first end of the third secondary winding of the first transformer T1 and the power input pin of the first control chip U3 can achieve unidirectional conduction through the third diode D3, thereby ensuring a stable power supply from the first transformer T1 to the first control chip U3.

[0055] Since the first end of the twelfth capacitor C12 is connected to the reference voltage pin of the first control chip U3, and the second end of the twelfth capacitor C12 is grounded, the reference voltage pin of the first control chip U3 can use the twelfth capacitor C12 to achieve voltage regulation and filtering, thereby ensuring the stable operation of the first control chip U3.

[0056] It should be noted that the specific types of the eleventh capacitor C11 and the twelfth capacitor C12 can be set according to actual needs, and there are no restrictions on this. For example, the eleventh capacitor C11 can be 0.1μF and the twelfth capacitor C12 can be 0.1μF.

[0057] The third diode D3 is used for unidirectional conduction along the first end of the third secondary winding of the first transformer T1 to the power input pin of the first control chip U3. The specific type of the third diode D3 can be set according to actual needs and there is no restriction on it.

[0058] like Figure 1 As shown, in some embodiments, the first control unit 904 further includes a thirteenth capacitor C13 and a ninth resistor R9. The first terminal of the thirteenth capacitor C13 is connected to the compensation pin of the first control chip U3, and the second terminal of the thirteenth capacitor C13 is connected to the feedback pin of the first control chip U3. The first terminal of the ninth resistor R9 is connected to the first terminal of the thirteenth capacitor C13, and the second terminal of the ninth resistor R9 is connected to the second terminal of the thirteenth capacitor C13.

[0059] It is understandable that, since the first end of the thirteenth capacitor C13 is connected to the compensation pin of the first control chip U3, and the second end of the thirteenth capacitor C13 is connected to the feedback pin of the first control chip U3, and the first end of the ninth resistor R9 is connected to the first end of the thirteenth capacitor C13, and the second end of the ninth resistor R9 is connected to the second end of the thirteenth capacitor C13, the thirteenth capacitor C13 and the ninth resistor R9 work together to stabilize the voltage of the feedback pin of the first control chip U3, thereby improving the dynamic response and anti-interference capability of the first control chip U3.

[0060] It should be noted that the specific type of the thirteenth capacitor C13 can be set according to actual needs, and there is no restriction on it. For example, the thirteenth capacitor C13 can be 100pF.

[0061] The specific type of the ninth resistor R9 can be set according to actual needs and there are no restrictions on it. For example, the ninth resistor R9 can be 100K.

[0062] like Figure 1 As shown, in some embodiments, the first control unit 904 further includes: a fourteenth capacitor C14, a tenth resistor R10, an eleventh resistor R11, and a twelfth resistor R12. The tenth resistor R10 and the eleventh resistor R11 are connected in series between the source of the first MOSFET Q1 and ground. The first end of the tenth resistor R10 is connected to the source of the first MOSFET Q1, and the first end of the eleventh resistor R11 is connected to the second end of the tenth resistor R10, with the second end of the eleventh resistor R11 grounded. The first end of the fourteenth capacitor C14 is connected to the current detection pin of the first control chip U3, and the second end of the fourteenth capacitor C14 is grounded. The first end of the twelfth resistor R12 is connected to the current detection pin of the first control chip U3, and the second end of the twelfth resistor R12 is connected to the source of the first MOSFET Q1.

[0063] Understandably, since the tenth resistor R10 and the eleventh resistor R11 are connected in series between the source of the first MOSFET Q1 and ground, and the first terminal of the fourteenth capacitor C14 is connected to the current detection pin of the first control chip U3 and the second terminal of the fourteenth capacitor C14 is grounded, the first terminal of the twelfth resistor R12 is connected to the current detection pin of the first control chip U3 and the second terminal of the twelfth resistor R12 is connected to the source of the first MOSFET Q1, the current detection pin of the first control chip U3 can use the cooperation of the fourteenth capacitor C14, the tenth resistor R10, the eleventh resistor R11 and the twelfth resistor R12 to collect the current of the first MOSFET Q1, thereby realizing the overcurrent protection of the first MOSFET Q1 based on the collected current of the first MOSFET Q1, and ensuring the stable operation of the power conversion module.

[0064] It should be noted that the specific type of the fourteenth capacitor C14 can be set according to actual needs, and there is no restriction on it. For example, the thirteenth capacitor C13 can be 470pF.

[0065] The specific types of the tenth resistor R10, the eleventh resistor R11, and the twelfth resistor R12 can be set according to actual needs and there are no restrictions on them. For example, the tenth resistor R10 can be 0.22R, the eleventh resistor R11 can be 0.22R, and the twelfth resistor R12 can be 1K.

[0066] like Figure 1As shown, in some embodiments, the first control unit 904 further includes a thirteenth resistor R13, a fourteenth resistor R14, and a fifteenth resistor R15. The first terminal of the thirteenth resistor R13 is connected to the power output terminal of the second rectifier unit 903, and the second terminal of the thirteenth resistor R13 is connected to the feedback pin of the first control chip U3. The first terminal of the fourteenth resistor R14 is connected to the second terminal of the thirteenth resistor R13, and the first terminal of the fifteenth resistor R15 is connected to the second terminal of the fourteenth resistor R14. The second terminal of the fifteenth resistor R15 is grounded.

[0067] Understandably, since the first end of the thirteenth resistor R13 is connected to the power output terminal of the second rectifier unit 903, and the second end of the thirteenth resistor R13 is connected to the feedback pin of the first control chip U3, the first end of the fourteenth resistor R14 is connected to the second end of the thirteenth resistor R13, the first end of the fifteenth resistor R15 is connected to the second end of the fourteenth resistor R14, and the second end of the fifteenth resistor R15 is grounded, the feedback pin of the first control chip U3 can obtain the voltage of the power output terminal of the second rectifier unit 903 by sampling the voltage divider of the thirteenth resistor R13, the fourteenth resistor R14, and the fifteenth resistor R15. This facilitates closed-loop control of the first MOSFET Q1, thereby achieving accurate voltage output.

[0068] It should be noted that the specific types of the thirteenth resistor R13, the fourteenth resistor R14, and the fifteenth resistor R15 can be set according to actual needs, and there are no restrictions on this. For example, the thirteenth resistor R13 can be 20K, the fourteenth resistor R14 can be 470R, and the fifteenth resistor R15 can be 2K.

[0069] like Figure 1 As shown, in some embodiments, the conversion module further includes a startup unit 905, which includes: a seventeenth resistor R17, an eighteenth resistor R18, a nineteenth resistor R19, a twentieth resistor R20, a twenty-first resistor R21, a twenty-fifth capacitor, a twenty-sixth capacitor, a twenty-seventh capacitor, a twenty-eighth capacitor, a twenty-ninth capacitor, a twenty-second resistor R22, a twenty-third resistor R23, a twenty-fourth resistor R24, a thirtieth capacitor, a seventh diode D7, and an eighth diode D8.

[0070] Specifically, the first terminal of the seventeenth resistor R17 is connected to the power output terminal of the high-voltage power supply, and the first terminal of the eighteenth resistor R18 is connected to the power input terminal of the first control unit 904. The first terminal of the nineteenth resistor R19 is connected to the second terminal of the eighteenth resistor R18, the first terminal of the twentieth resistor R20 is connected to the second terminal of the nineteenth resistor R19, the first terminal of the twenty-first resistor R21 is connected to the second terminal of the twentieth resistor R20, and the second terminal of the twenty-first resistor R21 is connected to the second terminal of the seventeenth resistor R17. The first terminal of the twenty-fifth capacitor is connected to the power output terminal of the high-voltage power supply, and the second terminal of the twenty-fifth capacitor is grounded. The first terminal of the twenty-sixth capacitor is connected to the second terminal of the twenty-fifth capacitor, and the second terminal of the twenty-sixth capacitor is grounded. The first terminal of the twenty-seventh capacitor is connected to the second terminal of the twenty-sixth capacitor, and the second terminal of the twenty-seventh capacitor is connected to the power input terminal of the first control unit 904. The first terminal of the twenty-eighth capacitor is connected to the power output terminal of the high-voltage power supply, and the first terminal of the twenty-ninth capacitor is connected to the second terminal of the seventeenth resistor R18. One end of the resistor R24 ​​is connected to the second end of the 28th capacitor, the second end of the 29th capacitor is connected to the second end of the 26th capacitor, the first end of the 22nd resistor R22 is connected to the first end of the 28th capacitor, the second end of the 22nd resistor R22 is connected to the second end of the 28th capacitor, the first end of the 23rd resistor R23 is connected to the first end of the 29th capacitor, the second end of the 23rd resistor R23 is connected to the second end of the 29th capacitor; the first end of the 24th resistor R24 ​​is connected to the second end of the 17th resistor R17, and the first end of the 30th capacitor is connected to the first end of the 24th resistor R24, the second end of the 30th capacitor is connected to the second end of the 24th resistor R24, the anode of the 7th diode D7 is connected to the second end of the primary winding of the first transformer T1, the cathode of the 7th diode D7 is connected to the second end of the 30th capacitor, the anode of the 8th diode D8 is connected to the cathode of the 7th diode D7, and the cathode of the 8th diode D8 is connected to the first end of the primary winding of the first transformer T1.

[0071] Understandably, since the first end of the seventeenth resistor R17 is connected to the power output terminal of the high-voltage power supply, and the first end of the eighteenth resistor R18 is connected to the power input terminal of the first control unit 904, the first end of the nineteenth resistor R19 is connected to the second end of the eighteenth resistor R18, the first end of the twentieth resistor R20 is connected to the second end of the nineteenth resistor R19, the first end of the twenty-first resistor R21 is connected to the second end of the twentieth resistor R20, the second end of the twenty-first resistor R21 is connected to the second end of the seventeenth resistor R17, the first end of the twenty-seventh capacitor is connected to the second end of the twenty-sixth capacitor, and the second end of the twenty-seventh capacitor is connected to the power input terminal of the first control unit 904, the high-voltage power supply can charge the twenty-seventh capacitor using the seventeenth resistor R17, the eighteenth resistor R18, the nineteenth resistor R19, the twentieth resistor R20, and the twenty-first resistor R21. This allows the energy stored in the twenty-seventh capacitor to start the first control unit 904, thereby ensuring the safe and stable operation of the first control unit 904.

[0072] Because the first terminal of the 25th capacitor is connected to the power output terminal of the high-voltage power supply, and the second terminal of the 25th capacitor is grounded, the first terminal of the 26th capacitor is connected to the second terminal of the 25th capacitor, and the second terminal of the 26th capacitor is grounded, the power output terminal of the high-voltage power supply can use the 25th and 26th capacitors to achieve filtering, thereby ensuring stable voltage output.

[0073] Because the first terminal of the 28th capacitor is connected to the power output terminal of the high-voltage power supply, and the first terminal of the 29th capacitor is connected to the second terminal of the 28th capacitor, and the second terminal of the 29th capacitor is connected to the second terminal of the 26th capacitor, the 28th and 29th capacitors can improve the withstand voltage of the starting unit 905 and can store and filter energy. Furthermore, because the first terminal of the 22nd resistor R22 is connected to the first terminal of the 28th capacitor, and the second terminal of the 22nd resistor R22 is connected to the second terminal of the 28th capacitor, and the first terminal of the 23rd resistor R23 is connected to the first terminal of the 29th capacitor, the 28th and 29th capacitors can achieve voltage balance using the 22nd and 23rd resistors. This ensures the safe and stable startup of the first control unit 904.

[0074] Since the first terminal of the 24th resistor R24 ​​is connected to the second terminal of the 17th resistor R17, and the first terminal of the 30th capacitor is connected to the first terminal of the 24th resistor R24, and the second terminal of the 30th capacitor is connected to the second terminal of the 24th resistor R24, the anode of the 7th diode D7 is connected to the second terminal of the primary winding of the first transformer T1, and the cathode of the 7th diode D7 is connected to the second terminal of the 30th capacitor, the 24th resistor R24, the 30th capacitor, and the 7th diode D7 form an absorption circuit, which can absorb voltage spikes and ensure the stable operation of the first transformer T1. Furthermore, since the anode of the 8th diode D8 is connected to the cathode of the 7th diode D7, and the cathode of the 8th diode D8 is connected to the first terminal of the primary winding of the first transformer T1, the 8th diode D8 can play a voltage limiting role, preventing damage to the device due to excessive voltage.

[0075] It should be noted that the specific types of the seventeenth resistor R17, the eighteenth resistor R18, the nineteenth resistor R19, the twentieth resistor R20, the twenty-first resistor R21, the twenty-second resistor R22, the twenty-third resistor R23, and the twenty-fourth resistor R24 ​​can be set according to actual needs and are not restricted. For example, the eighteenth resistor R18 can be 100K, the nineteenth resistor R19 can be 100K, the twentieth resistor R20 can be 100K, the twenty-first resistor R21 can be 100K, the twenty-second resistor R22 can be 68K, the twenty-third resistor R23 can be 68K, and the twenty-fourth resistor R24 ​​can be 68K.

[0076] The specific types of the 25th, 26th, 27th, 28th, 29th, and 30th capacitors can be set according to actual needs and are not restricted. For example, the 25th capacitor can be 22nF, the 26th capacitor can be 22nF, the 27th capacitor can be 100μF, the 28th capacitor can be 150μF, the 29th capacitor can be 150μF, and the 30th capacitor can be 22nF.

[0077] The seventh diode D7 is used to conduct along the direction from the second end of the primary winding of the first transformer T1 to the second end of the thirtieth capacitor, and the eighth diode D8 is used to conduct in the reverse direction from the cathode of the seventh diode D7 to the first end of the primary winding of the first transformer T1. The specific types of the seventh diode D7 and the eighth diode D8 can be set according to actual needs and there are no restrictions on them.

[0078] like Figure 1As shown, in some embodiments, the first rectifier unit 902 includes: a fourth diode D4, a third inductor L3, a fifteenth capacitor C15, a first voltage regulator chip U4, a sixteenth capacitor C16, a seventeenth capacitor C17, an eighteenth capacitor C18, a nineteenth capacitor C19, and a twenty-fourth capacitor.

[0079] In this circuit, the anode of the fourth diode D4 is connected to the first terminal of the first secondary winding of the first transformer T1, and the first terminal of the third inductor L3 is connected to the cathode of the fourth diode D4. The first terminal of the fifteenth capacitor C15 is connected to the second terminal of the third inductor L3, and the second terminal of the fifteenth capacitor C15 is connected to the second terminal of the first secondary winding of the first transformer T1 and grounded. The input terminal of the first voltage regulator chip U4 is connected to the first terminal of the fifteenth capacitor C15, and the ground terminal of the first voltage regulator chip U4 is connected to the second terminal of the fifteenth capacitor C15. The output terminal of the first voltage regulator chip U4 serves as the power output terminal of the first rectifier unit 902, outputting the first voltage. The first terminal of the sixteenth capacitor C16 is connected to the first terminal of the third inductor L3, and the second terminal of the sixteenth capacitor C16 is connected to the first terminal of the first secondary winding of the first transformer T1 and grounded. The first terminal of the seventeenth capacitor C17 is connected to the second terminal of the first secondary winding of the first transformer T1, and the second terminal of the seventeenth capacitor C17 is connected to the second terminal of the sixteenth capacitor C16. The first terminal of the eighteenth capacitor C18 is connected to the output terminal of the first voltage regulator chip U4, and the second terminal of the eighteenth capacitor C18 is connected to the ground terminal of the first voltage regulator chip U4. The first terminal of the nineteenth capacitor C19 is connected to the first terminal of the eighteenth capacitor C18, and the second terminal of the nineteenth capacitor C19 is connected to the second terminal of the eighteenth capacitor C18. The first terminal of the twenty-fourth capacitor is connected to the first terminal of the primary winding of the first transformer T1, and the second terminal of the twenty-fourth capacitor is connected to the second terminal of the first secondary winding of the first transformer T1.

[0080] It is understandable that, since the anode of the fourth diode D4 is connected to the first terminal of the first secondary winding of the first transformer T1, and the first terminal of the third inductor L3 is connected to the cathode of the fourth diode D4, the first terminal of the fifteenth capacitor C15 is connected to the second terminal of the third inductor L3, and the second terminal of the fifteenth capacitor C15 is connected to the second terminal of the first secondary winding of the first transformer T1 and grounded, the fourth diode D4 can rectify the high-frequency AC power output from the first secondary winding of the first transformer T1, and, in conjunction with the energy storage and filtering of the third inductor L3 and the fifteenth capacitor C15, achieve a stable output of the first voltage.

[0081] Since the input terminal of the first voltage regulator chip U4 is connected to the first terminal of the fifteenth capacitor C15, and the ground terminal of the first voltage regulator chip U4 is connected to the second terminal of the fifteenth capacitor C15, the output terminal of the first voltage regulator chip U4 serves as the power output terminal of the first rectifier unit 902, outputting the first voltage. This enables the first voltage regulator chip U4 to regulate the rectified DC power, thereby ensuring the stable output of the first voltage.

[0082] Meanwhile, based on the arrangement of the sixteenth capacitor C16, the seventeenth capacitor C17, the eighteenth capacitor C18, the nineteenth capacitor C19, and the twenty-fourth capacitor, the power output terminal of the first rectifier unit 902 can utilize the sixteenth capacitor C16, the seventeenth capacitor C17, the eighteenth capacitor C18, the nineteenth capacitor C19, and the twenty-fourth capacitor to achieve energy storage and filtering, thereby further ensuring the stable output of the first voltage.

[0083] It should be noted that the fourth diode D4 is used to conduct along the direction from the first end of the first secondary winding of the first transformer T1 to the first end of the third inductor L3. The specific type of the fourth diode D4 can be set according to actual needs and there are no restrictions on it.

[0084] The specific type of the third inductor L3 can be set according to actual needs and there are no restrictions on it. For example, the third inductor L3 can be 100μH.

[0085] The specific types of the fifteenth capacitor C15, the sixteenth capacitor C16, the seventeenth capacitor C17, the eighteenth capacitor C18, the nineteenth capacitor C19, and the twenty-fourth capacitor can be set according to actual needs and are not restricted. For example, the fifteenth capacitor C15 can be 0.1μF, the sixteenth capacitor C16 can be 100μF, the seventeenth capacitor C17 can be 100μF, the eighteenth capacitor C18 can be 100μF, the nineteenth capacitor C19 can be 0.1μF, and the twenty-fourth capacitor can be 2200pF.

[0086] The specific type of the first voltage regulator chip U4 can be set according to actual needs and there is no restriction. For example, the first voltage regulator chip U4 can be a 7815 chip. The first voltage regulator chip U4 has a first pin (input pin), a second pin (ground pin) and a third pin (output pin).

[0087] like Figure 1 As shown, in some embodiments, the second rectifier unit 903 includes: a fifth diode D5, a fourth inductor L4, a twentieth capacitor C20, a twenty-first capacitor C21, a twenty-second capacitor C22, a twenty-third capacitor C23, a sixth diode D6, and a sixteenth resistor R16.

[0088] In this configuration, the anode of the fifth diode D5 is connected to the first terminal of the second secondary winding of the first transformer T1, and the first terminal of the fourth inductor L4 is connected to the cathode of the fifth diode D5. The first terminal of the twentieth capacitor C20 is connected to the second terminal of the fourth inductor L4, and the second terminal of the twentieth capacitor C20 is connected to the second terminal of the second secondary winding of the first transformer T1 and grounded. The first terminal of the twentieth capacitor C20 serves as the power output terminal of the second rectifier unit 903, outputting the second voltage. The first terminal of the twenty-first capacitor C21 is connected to the cathode of the fifth diode D5, and the second terminal of the twenty-first capacitor C21 is connected to the second terminal of the second secondary winding of the first transformer T1. The first terminal of the twenty-second capacitor C22 is connected to the first terminal of the twenty-first capacitor C21, and the second terminal of the twenty-second capacitor C22 is connected to the second terminal of the twenty-first capacitor C21. The first terminal of the twenty-third capacitor C23 is connected to the first terminal of the twentieth capacitor C20, and the second terminal of the twenty-third capacitor C23 is connected to the second terminal of the twentieth capacitor C20. The sixth diode D6 is a light-emitting diode, and the anode of the sixth diode D6 is connected to the first terminal of the twentieth capacitor C20. The first terminal of the sixteenth resistor R16 is connected to the cathode of the sixth diode D6, and the second terminal of the sixteenth resistor R16 is connected to the second terminal of the twentieth capacitor C20.

[0089] Understandably, since the anode of the fifth diode D5 is connected to the first terminal of the second secondary winding of the first transformer T1, and the first terminal of the fourth inductor L4 is connected to the cathode of the fifth diode D5, the first terminal of the twentieth capacitor C20 is connected to the second terminal of the fourth inductor L4, and the second terminal of the twentieth capacitor C20 is connected to the second terminal of the second secondary winding of the first transformer T1 and grounded, the first terminal of the twentieth capacitor C20 serves as the power output terminal of the second rectifier unit 903, outputting the second voltage. This enables the fifth diode D5 to rectify the high-frequency AC power output from the second secondary winding of the first transformer T1, and, in conjunction with the energy storage and filtering of the fourth inductor L4 and the twentieth capacitor C20, achieves a stable output of the second voltage.

[0090] Since the first terminal of the twenty-first capacitor C21 is connected to the cathode of the fifth diode D5, and the second terminal of the twenty-first capacitor C21 is connected to the second terminal of the second secondary winding of the first transformer T1, the first terminal of the twenty-second capacitor C22 is connected to the first terminal of the twenty-first capacitor C21, the second terminal of the twenty-second capacitor C22 is connected to the second terminal of the twenty-first capacitor C21, the first terminal of the twenty-third capacitor C23 is connected to the first terminal of the twentieth capacitor C20, and the second terminal of the twenty-third capacitor C23 is connected to the second terminal of the twentieth capacitor C20, the power output terminal of the second rectifier unit 903 can utilize the twenty-first capacitor C21, the twenty-second capacitor C22, and the twenty-third capacitor C23 to achieve energy storage and filtering, thereby further ensuring the stable output of the second voltage.

[0091] Since the sixth diode D6 is a light-emitting diode, and the anode of the sixth diode D6 is connected to the first terminal of the twentieth capacitor C20, the first terminal of the sixteenth resistor R16 is connected to the cathode of the sixth diode D6, and the second terminal of the sixteenth resistor R16 is connected to the second terminal of the twentieth capacitor C20, the sixth diode D6 and the sixteenth resistor R16 can work together to achieve light-emitting indication when the power output terminal of the second rectifier unit 903 outputs the second voltage, thus making the power conversion module more convenient to use.

[0092] It should be noted that the fifth diode D5 is used for unidirectional conduction along the direction from the first end of the second secondary winding of the first transformer T1 to the first end of the fourth inductor L4. The specific type of the fifth diode D5 can be set according to actual needs and there are no restrictions on it.

[0093] The specific type of the fourth inductor L4 can be set according to actual needs and there are no restrictions on it. For example, the fourth inductor L4 can be 100μH.

[0094] The specific types of the twentieth capacitor C20, the twenty-first capacitor C21, the twenty-second capacitor C22, and the twenty-third capacitor C23 can be set according to actual needs and are not restricted. For example, the twentieth capacitor C20 can be 0.1μF, the twenty-first capacitor C21 can be 100μF, the twenty-second capacitor C22 can be 0.1μF, and the twenty-third capacitor C23 can be 100μF.

[0095] The sixth diode D6 is used to conduct and emit light unidirectionally along the direction from the first terminal of the twentieth capacitor C20 to the first terminal of the sixteenth resistor R16. The specific type of the sixth diode D6 can be set according to actual needs and there is no restriction on it.

[0096] The specific type of the sixteenth resistor R16 can be set according to actual needs and there are no restrictions on it. For example, the sixteenth resistor R16 can be 10K.

[0097] Among them, the first end of the thirteenth resistor R13 can be connected to the first end of the fourth inductor L4.

[0098] It should be noted that in the description of this disclosure, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0099] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of preferred embodiments of this disclosure includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the function involved, as will be understood by those skilled in the art to which embodiments of this disclosure pertain.

[0100] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0101] Although embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A power conversion module based on high-voltage input, characterized in that, include: The system comprises a first transformer, a first switching unit, a first rectifier unit, a second rectifier unit, and a first control unit; Wherein, the first end of the primary winding of the first transformer is connected to the power output end of the high-voltage power supply, and the first switching unit is connected in series between the second end of the primary winding of the first transformer and ground, the power input end of the first rectifier unit is connected to the first secondary winding of the first transformer, and the power input end of the second rectifier unit is connected to the second secondary winding of the first transformer. The power input terminal of the first control unit is connected to the third secondary winding of the first transformer, and the control output terminal of the first control unit is connected to the control input terminal of the first switching unit. The first control unit is used to control the on / off state of the first switching unit.

2. The power conversion module based on high-voltage input according to claim 1, characterized in that, The first switching unit includes: First MOSFET; The first MOSFET is an N-type transistor, and its drain is connected to the second terminal of the primary winding of the first transformer. The source of the first MOSFET is grounded, and its gate serves as the control input terminal of the first switching unit and is connected to the control output terminal of the first control unit.

3. The power conversion module based on high-voltage input according to claim 2, characterized in that, The first control unit includes: The first control chip, the seventh resistor, the eighth resistor, and the tenth capacitor; Wherein, the power input pin of the first control chip serves as the power input terminal of the first control unit and is connected to the first terminal of the third secondary winding of the first transformer, and the second terminal of the third secondary winding of the first transformer is grounded. The first end of the seventh resistor is connected to the drive output pin of the first control chip, and the second end of the seventh resistor serves as the control output terminal of the first control unit and is connected to the gate of the first MOS transistor. The first end of the eighth resistor is connected to the reference voltage pin of the first control chip, and the second end of the eighth resistor is connected to the oscillator timing resistor-capacitor pin of the first control chip. The first terminal of the tenth capacitor is connected to the second terminal of the eighth resistor, and the second terminal of the tenth capacitor is grounded.

4. The power conversion module based on high-voltage input according to claim 3, characterized in that, The first control unit also includes: The eleventh capacitor, the third diode, and the twelfth capacitor; The first end of the eleventh capacitor is connected to the power input pin of the first control chip, and the second end of the eleventh capacitor is grounded. The third diode is connected in series between the power input pin of the first control chip and the first end of the third secondary winding of the first transformer. The anode of the third diode is connected to the first end of the third secondary winding of the first transformer, and the cathode of the third diode is connected to the power input pin of the first control chip. The first terminal of the twelfth capacitor is connected to the reference voltage pin of the first control chip, and the second terminal of the twelfth capacitor is grounded.

5. The power conversion module based on high-voltage input according to claim 3, characterized in that, The first control unit also includes: The thirteenth capacitor and the ninth resistor; The first end of the thirteenth capacitor is connected to the compensation pin of the first control chip, and the second end of the thirteenth capacitor is connected to the feedback pin of the first control chip. The first end of the ninth resistor is connected to the first end of the thirteenth capacitor, and the second end of the ninth resistor is connected to the second end of the thirteenth capacitor.

6. The power conversion module based on high-voltage input according to claim 3, characterized in that, The first control unit also includes: The fourteenth capacitor, the tenth resistor, the eleventh resistor, and the twelfth resistor; The tenth resistor and the eleventh resistor are connected in series between the source and ground of the first MOS transistor, and the first end of the tenth resistor is connected to the source of the first MOS transistor, the first end of the eleventh resistor is connected to the second end of the tenth resistor, and the second end of the eleventh resistor is grounded. The first terminal of the fourteenth capacitor is connected to the current detection pin of the first control chip, and the second terminal of the fourteenth capacitor is grounded. The first terminal of the twelfth resistor is connected to the current detection pin of the first control chip, and the second terminal of the twelfth resistor is connected to the source of the first MOS transistor.

7. The power conversion module based on high-voltage input according to claim 3, characterized in that, The first control unit also includes: The thirteenth, fourteenth, and fifteenth resistors; Specifically, the first end of the thirteenth resistor is connected to the power output terminal of the second rectifier unit, and the second end of the thirteenth resistor is connected to the feedback pin of the first control chip. The first end of the fourteenth resistor is connected to the second end of the thirteenth resistor, and the first end of the fifteenth resistor is connected to the second end of the fourteenth resistor. The second end of the fifteenth resistor is grounded.

8. The power conversion module based on high-voltage input according to claim 3, characterized in that, The conversion module also includes: The startup unit includes: a seventeenth resistor, an eighteenth resistor, a nineteenth resistor, a twentieth resistor, a twenty-first resistor, a twenty-fifth capacitor, a twenty-sixth capacitor, a twenty-seventh capacitor, a twenty-eighth capacitor, a twenty-ninth capacitor, a twenty-second resistor, a twenty-third resistor, a twenty-fourth resistor, a thirtieth capacitor, a seventh diode, and an eighth diode; Wherein, the first end of the seventeenth resistor is connected to the power output terminal of the high-voltage power supply, and the first end of the eighteenth resistor is connected to the power input terminal of the first control unit, the first end of the nineteenth resistor is connected to the second end of the eighteenth resistor, the first end of the twentieth resistor is connected to the second end of the nineteenth resistor, the first end of the twenty-first resistor is connected to the second end of the twenty-second resistor, and the second end of the twenty-first resistor is connected to the second end of the seventeenth resistor. The first terminal of the 25th capacitor is connected to the power output terminal of the high-voltage power supply, and the second terminal of the 25th capacitor is grounded. The first terminal of the 26th capacitor is connected to the second terminal of the 25th capacitor, and the second terminal of the 26th capacitor is grounded. The first terminal of the 27th capacitor is connected to the second terminal of the 26th capacitor, and the second terminal of the 27th capacitor is connected to the power input terminal of the first control unit. The first terminal of the 28th capacitor is connected to the power output terminal of the high-voltage power supply, and the first terminal of the 29th capacitor is connected to the second terminal of the 28th capacitor, the second terminal of the 29th capacitor is connected to the second terminal of the 26th capacitor, the first terminal of the 22nd resistor is connected to the first terminal of the 28th capacitor, the second terminal of the 22nd resistor is connected to the second terminal of the 28th capacitor, the first terminal of the 23rd resistor is connected to the first terminal of the 29th capacitor, and the second terminal of the 23rd resistor is connected to the second terminal of the 29th capacitor. The first end of the 24th resistor is connected to the second end of the 17th resistor, and the first end of the 30th capacitor is connected to the first end of the 24th resistor. The second end of the 30th capacitor is connected to the second end of the 24th resistor. The anode of the 7th diode is connected to the second end of the primary winding of the first transformer. The cathode of the 7th diode is connected to the second end of the 30th capacitor. The anode of the 8th diode is connected to the cathode of the 7th diode. The cathode of the 8th diode is connected to the first end of the primary winding of the first transformer.

9. The power conversion module based on high-voltage input according to claim 1, characterized in that, The first rectifier unit includes: Fourth diode, third inductor, fifteenth capacitor, first voltage regulator chip, sixteenth capacitor, seventeenth capacitor, eighteenth capacitor, nineteenth capacitor, and twenty-fourth capacitor; Wherein, the anode of the fourth diode is connected to the first terminal of the first secondary winding of the first transformer, and the first terminal of the third inductor is connected to the cathode of the fourth diode, the first terminal of the fifteenth capacitor is connected to the second terminal of the third inductor, and the second terminal of the fifteenth capacitor is connected to the second terminal of the first secondary winding of the first transformer and grounded; The input terminal of the first voltage regulator chip is connected to the first terminal of the fifteenth capacitor, and the ground terminal of the first voltage regulator chip is connected to the second terminal of the fifteenth capacitor. The output terminal of the first voltage regulator chip serves as the power output terminal of the first rectifier unit to output the first voltage. The first terminal of the sixteenth capacitor is connected to the first terminal of the third inductor, and the second terminal of the sixteenth capacitor is connected to the second terminal of the first secondary winding of the first transformer. The first terminal of the seventeenth capacitor is connected to the second terminal of the third inductor, and the second terminal of the seventeenth capacitor is connected to the second terminal of the sixteenth capacitor. The first terminal of the eighteenth capacitor is connected to the output terminal of the first voltage regulator chip, and the second terminal of the eighteenth capacitor is connected to the ground terminal of the first voltage regulator chip. The first terminal of the nineteenth capacitor is connected to the first terminal of the eighteenth capacitor, and the second terminal of the nineteenth capacitor is connected to the second terminal of the eighteenth capacitor. The first terminal of the 24th capacitor is connected to the first terminal of the primary winding of the first transformer, and the second terminal of the 24th capacitor is connected to the second terminal of the primary secondary winding of the first transformer.

10. The power conversion module based on high-voltage input according to claim 1, characterized in that, The second rectifier unit includes: The fifth diode, the fourth inductor, the twentieth capacitor, the twenty-first capacitor, the twenty-second capacitor, the twenty-third capacitor, the sixth diode, and the sixteenth resistor; Wherein, the anode of the fifth diode is connected to the first end of the second secondary winding of the first transformer, and the first end of the fourth inductor is connected to the cathode of the fifth diode. The first end of the twentieth capacitor is connected to the second end of the fourth inductor. The second end of the twentieth capacitor is connected to the second end of the second secondary winding of the first transformer and grounded. The first end of the twentieth capacitor serves as the power output terminal of the second rectifier unit to output the second voltage. The first terminal of the 21st capacitor is connected to the cathode of the fifth diode, and the second terminal of the 21st capacitor is connected to the second terminal of the second secondary winding of the first transformer. The first terminal of the 22nd capacitor is connected to the first terminal of the 21st capacitor, and the second terminal of the 22nd capacitor is connected to the second terminal of the 21st capacitor. The first terminal of the 23rd capacitor is connected to the first terminal of the 20th capacitor, and the second terminal of the 23rd capacitor is connected to the second terminal of the 20th capacitor. The sixth diode is a light-emitting diode, and the anode of the sixth diode is connected to the first terminal of the twentieth capacitor. The first terminal of the sixteenth resistor is connected to the cathode of the sixth diode, and the second terminal of the sixteenth resistor is connected to the second terminal of the twentieth capacitor.

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