CN218733891U - Novel power converter module - Google Patents
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- CN218733891U CN218733891U CN202222744432.6U CN202222744432U CN218733891U CN 218733891 U CN218733891 U CN 218733891U CN 202222744432 U CN202222744432 U CN 202222744432U CN 218733891 U CN218733891 U CN 218733891U
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Abstract
The utility model discloses a novel power converter module is from power input end to direct current voltage output, including consecutive RFI filter circuit, input rectification filter circuit, switching unit, isolation power transformer, output rectification filter circuit, combine the quick start circuit who sets up between the junction of isolation power transformer and switching unit and the N line of power input end, realize 90 ~ 528VAC full operating mode, the start-up time is less than 4S, and stand-by power consumption is less than 0.3W. The utility model discloses successfully solve traditional super wide high voltage power supply module, can't compromise the performance requirement between power module stand-by power consumption and the start-up time simultaneously, the utility model discloses realize above-mentioned function simultaneously to the circuit is compact, and overall cost is low, safe and reliable.
Description
Technical Field
The utility model relates to a novel power converter module especially relates to a high integrated off-line's novel power converter module that is used for three phase electricity power supply system's fill electric pile charge control system's quick start, ultralow stand-by power consumption.
Background
According to the technology and the use characteristics of the power battery pack of the electric automobile, charging modes of the charging pile can be divided into a slow charging mode charging pile and a fast charging mode charging pile; according to different modes of providing electric energy, the automobile charging pile can be divided into a direct-current charging mode charging pile and an alternating-current charging mode charging pile, wherein a common charging mode (slow charging) is adopted, the charging time is 6-8 hours, the charging current is relatively small, single-phase power supply is generally adopted, the rated working voltage is 220VAC, a rapid charging mode (rapid charging) is adopted, the charging time is 20-60 minutes, charging is carried out at a large current, the rated working voltage can reach 440VAC, and three-phase power supply is generally adopted.
The auxiliary power supply for supplying power to the main board of the charging pile charging control system is different in power supply mode according to the system, different in required input voltage range, and designed according to the voltage of 90-305 VAC (voltage of 100-240 VAC) in terms of power grid fluctuation for a single-phase power supply system and an auxiliary power supply module in terms of the voltage of 100-240 VAC in terms of the power grid fluctuation, and designed according to the voltage of 90-528VAC in terms of the input voltage range of 100-480 VAC in terms of a three-phase power supply system and the auxiliary power supply module.
Fill electric pile and install in outdoor, fill in the electric pile control system board places the rifle that charges in generally, installation space is little in the rifle that charges, and operational environment temperature is high, and the highest temperature can reach 80 degrees, and to three-phase power supply system's auxiliary power supply, power module dimensional requirement is very high, and the power input voltage scope is 90VAC ~ 528VAC, so wide input voltage scope, the reasonable value of power starting resistance is a technological problem.
The chinese patent discloses a power converter module (patent No. cn202122277095. X), include filter circuit from the power input end to the dc voltage output end in proper order, input rectification filter circuit, keep apart power transformer, output rectification filter circuit outputs dc voltage, it is provided with the switching unit on the isolation power transformer, be provided with photoelectric signal isolation circuit and sampling compensation circuit between switching unit and the dc voltage output end, be provided with the feedback control circuit on the switching unit, input rectification filter circuit includes rectifier circuit and common mode inductance module, common mode inductance module is located rectifier circuit back level. The value of the power supply starting resistor is too small, when high voltage 528VAC is input, the standby power consumption of the whole machine is very large and can reach 0.45W, meanwhile, the charging pile of the electric automobile is standby for 24 hours, the standby power consumption is too large and cannot meet the requirement of energy environment protection certification, the industry generally requires that the standby power consumption of the full working condition is 0.3W max, because the charging pile is installed outdoors, the environmental temperature can reach 80 ℃, the module is considered to generate heat, and the rated power of the starting resistor needs to meet the derating requirement of at least 60 percent from the viewpoint of product reliability; the value of the power supply starting resistor is too large, so that the requirement of industry standby power consumption can be met, but when 90VAC is input at low voltage, the starting time is very long, the starting time needs to be lower than 4S according to the industry requirement, otherwise, the user experience is reduced, even customers are misled, and the system is considered to be abnormal.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a novel power converter module is provided, have the high integrated off-line's that is used for three-phase electricity power supply system's the quick start of electric pile charge control system, ultralow stand-by power consumption characteristics.
For solving the technical problem, realize quick start, the technical scheme of the utility model is that: a novel power converter module, its characterized in that: the novel power converter module comprises an RFI filter circuit, an input rectification filter circuit, an exchange unit, an isolation power transformer and an output rectification filter circuit which are sequentially connected from a power input end to a direct-current voltage output end, wherein the output rectification filter circuit outputs direct-current voltage, a photoelectric signal isolation circuit connected with the exchange unit and a sampling compensation circuit connected with the photoelectric signal isolation circuit are arranged between the exchange unit and the direct-current voltage output end, and a feedback control circuit is arranged on the exchange unit; the power input end includes L line and N line, isolation power transformer with be provided with quick start circuit between the junction of switching unit and the N line of power input end, quick start circuit include with the N line of power input end link to each other first order starting circuit, with unidirectional transmission buffer circuit that first order starting circuit links to each other, with unidirectional transmission buffer circuit's second level starting circuit that unidirectional transmission buffer circuit links to each other, first order starting circuit with the switching unit links to each other, second level starting circuit with isolation power transformer links to each other, and first order starting circuit's capacitance value is less than second level starting circuit's capacitance value, unidirectional transmission buffer circuit is second level starting circuit to first order starting circuit unidirectional transmission's diode D2.
Preferably, the first-stage starting circuit comprises a diode D1, a resistor R3, a resistor R4, a resistor R5, a resistor R6 and a first-stage energy storage capacitor which are sequentially connected in series, the diode D1 is connected with an N line of the power input end, the diode D1 unidirectionally transmits current towards the resistor R1, the first-stage energy storage capacitor is grounded, a junction of the resistor R6 and the first-stage energy storage capacitor is a point P, and the switching unit and the diode D2 are respectively connected with the point P; the specification of the first-stage energy storage capacitor is 2.2uF-4.7uF/50V.
Preferably, the second-stage starting circuit comprises a diode D3, a resistor R7 and a second-stage energy storage capacitor which are sequentially connected in series, the diode D3 is connected with the isolation power transformer, the diode D3 unidirectionally transmits current towards the resistor R7, the second-stage energy storage capacitor is grounded, a Q point is at the junction of the resistor R7 and the second-stage energy storage capacitor, and the diode D2 is connected with the Q point; the specification of the second-stage energy storage capacitor is 10uF-22uF/50V.
Preferably, the RFI filter circuit comprises an FR1 fuse resistor and an LCM common mode inductor connected to the FR1 fuse resistor, the FR1 fuse resistor is connected in series to an L line, and the LCM common mode inductor is bridged between the L line and an N line; the LCM common mode inductor is an EMC device.
Preferably, the input rectifying and filtering circuit comprises a rectifying circuit and a pi-shaped filtering circuit connected with the rectifying circuit, and the pi-shaped filtering circuit is positioned at the rear stage of the rectifying circuit; the rectifier circuit is a bridge rectifier circuit consisting of four diodes, two ends of the bridge rectifier circuit are respectively connected with the RFI filter circuit, and the other two ends of the bridge rectifier circuit are connected with the n-shaped filter circuit; the n-shaped filter circuit consists of a differential mode inductor LDM, a high-voltage large electrolysis EC1 and a high-voltage large electrolysis EC5, a bridge rectifier circuit is connected with two ends of the high-voltage large electrolysis EC5, and the high-voltage large electrolysis EC1 is connected with an isolation power transformer.
Preferably, the isolation power transformer comprises a primary main winding NP and a primary auxiliary winding NVCC on the primary side of the isolation power transformer, and a secondary main winding Ns on the secondary side of the isolation power transformer, one end of the primary main winding NP is connected to the anode of the high-voltage large electrolysis EC1, the other end of the primary main winding NP is connected to the switching unit, one end of the primary auxiliary winding NVCC is connected to the second-stage starting circuit, the other end of the primary auxiliary winding NVCC is grounded, and the two ends of the secondary main winding Ns are connected to the output rectifying and filtering circuit.
Preferably, the switching unit is a PWM power control IC with an MOS built in, and the PWM power control IC is provided with a first pin connected to the primary main winding NP, a Cs pin connected to the feedback control circuit, a VDD pin connected to the first stage start circuit, and a FB pin connected to the photoelectric signal isolation circuit.
Preferably, the dc voltage output terminal includes an output positive terminal and a ground terminal, one end of the isolation power transformer is connected to the output rectifying and filtering circuit, and the other end of the isolation power transformer is connected to the ground terminal; the output rectifying and filtering circuit realizes diode rectification output by the isolation power transformer and comprises a diode D4 between the anode of an output end and an energy storage filtering electrolytic capacitor EC4 between the anode of the output end and the grounding end, and the energy storage filtering electrolytic capacitor EC4 is positioned at the rear stage of the diode D4; the feedback control circuit is a voltage operation feedback circuit and consists of a resistor R2 with one end grounded and the other end connected with the exchange unit.
Preferably, the optoelectronic signal isolating circuit is composed of an optoelectronic coupler U2 located between the switching unit and the sampling compensation circuit, the optoelectronic coupler U2 is provided with two input side ports and two output side ports, one of the two output side ports is connected to the positive electrode of the dc voltage output terminal, the other of the two output side ports is connected to the sampling compensation circuit, one of the two input side ports is connected to the switching unit, and the other of the two input side ports is grounded.
Preferably, the sampling compensation circuit comprises a voltage division network resistor R9 and a voltage division network resistor R10 which are mutually connected in series between the positive electrode of the direct-current voltage output end and the grounding end, a phase compensation capacitor C1, a phase compensation network resistor R8 and a voltage reference chip U3 which are arranged at two ends of the voltage division network resistor R10 in parallel and connected in series in sequence, a phase compensation capacitor C2 is arranged on the phase compensation capacitor C1 and the phase compensation network resistor R8 in parallel, a PIN anode K and a PIN cathode P are arranged on the voltage reference chip U3, the common end of the phase compensation capacitor C1 and the phase compensation capacitor C2 is connected with the PIN cathode P, the common end point of the phase compensation capacitor C2 and the phase compensation network resistor R8 is respectively connected with the photoelectric signal isolation circuit and the PIN cathode P, and the PIN anode K is grounded.
The utility model has the advantages that: through adopting above-mentioned structure, novel power converter module is from power input end to direct current voltage output end, including consecutive RFI filter circuit, input rectification filter circuit, switching unit, isolation power transformer, output rectification filter circuit, combine the quick start circuit who sets up between the junction of isolation power transformer and switching unit and the N line of power input end, realize 90-528VAC full operating mode, start-up time is less than 4S, and stand-by power consumption is less than 0.3W.
By adding the quick start circuit, the first-stage energy storage capacitor is a capacitor with a small capacitance value, the specific specification is 2.2uF-4.7uF/50V, under the worst low-voltage input working condition of 90VAC, at the moment of electrifying, the first-stage energy storage capacitor passes through the high-voltage start resistor, the start threshold voltage of the PWM power supply control IC can be quickly reached, the second-stage energy storage capacitor is a capacitor with a large capacitance value, the specific specification is 10uF-22uF/50V, after the start threshold value of the PWM power supply control IC is triggered, the energy requirements of each logic function module in the PWM power supply control IC are provided by the second-stage energy storage capacitor, the whole start circuit is isolated between the first-stage energy storage capacitor and the second-stage energy storage capacitor through the diode D2, and the energy can be only transmitted to the first-stage energy storage capacitor from the second-stage energy storage capacitor.
In view of this, the utility model discloses successfully solve traditional super wide high voltage power supply module, can't compromise the performance requirement between power module stand-by power consumption and the start-up time simultaneously, the utility model discloses realize above-mentioned function simultaneously to the circuit is simple, and overall cost is low, safe and reliable.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic block diagram of the novel power converter module of the present invention.
Fig. 2 is a circuit diagram of the novel power converter module of the present invention.
In the figure: 1-RFI filter circuit, 101-FR1 fuse resistor, 102-LCM common mode inductor, 2-input rectification filter circuit, 21-rectifier circuit, 221-pi type filter circuit, 222-high voltage large electrolysis EC1, 223-high voltage large electrolysis EC5, 3-switching unit, 31-PWM power supply control IC, 32-first PIN, 33-Cs PIN, 34-VDD PIN, 35-FB PIN, 4-isolation power transformer, 41-primary main winding NP, 42-primary auxiliary winding NVCC, 43-secondary main winding Ns, 5-output rectification filter circuit, 51-diode D4, 52-energy storage filter electrolytic capacitor EC4, 6-photoelectric signal isolation circuit, 61-photoelectric coupler U2, 7-sampling compensation circuit 71-voltage dividing network resistors R9, 72-voltage dividing network resistors R10, 73-phase compensation capacitors C1, 74-phase compensation network resistors R8, 75-voltage reference chips U3, 76-phase compensation capacitors C2, 77-PIN PINs R, 78-PIN anodes K, 79-PIN cathodes P, 8-feedback control circuits, 81-resistors R2, 9-SHANYOU starting circuits, 91-first-stage starting circuits, 911-diodes D1, 912-resistors R1, 913-resistors R3, 914-resistors R4, 915-resistors R5, 916-resistors R6, 917-first-stage energy storage capacitors, 918-P points, 92-diodes D2, 93-second-stage starting circuits, 931-diodes D3, 932-resistors R7, 933-second-stage energy storage capacitors, 934-Q point, 10-L line, 11-N line, 12-output positive terminal and 13-ground terminal.
Detailed Description
The utility model discloses a novel power converter module, from power input end to DC voltage output, including consecutive RFI filter circuit 1, input rectification filter circuit 2, switching unit 3, keep apart power transformer 4, output rectification filter circuit 5 output DC voltage, be provided with the photoelectric signal isolation circuit 6 that links to each other with switching unit 3 between switching unit 3 and the DC voltage output and the sampling compensating circuit 7 that links to each other with photoelectric signal isolation circuit, be provided with feedback control circuit 8 on the switching unit 3. The power input end comprises an L line 10 and an N line 11, a quick start circuit 9 is arranged between the joint of the isolation power transformer and the exchange unit and the N line of the power input end, the quick start circuit 9 comprises a first stage start circuit 91 connected with the N line of the power input end, a one-way transmission isolation circuit connected with the first stage start circuit, a second stage start circuit 93 connected with the one-way transmission isolation circuit, the first stage start circuit is connected with the exchange unit, the second stage start circuit is connected with the isolation power transformer, the capacitance value of the first stage start circuit is smaller than that of the second stage start circuit, and the one-way transmission isolation circuit is a diode D292 in which the second stage start circuit transmits one-way to the first stage start circuit. Through adopting above-mentioned structure, novel power converter module, from the power input end to direct current voltage output end, including consecutive RFI filter circuit, input rectification filter circuit, switching unit, isolation power transformer, output rectification filter circuit, combine the quick start circuit who sets up between the junction of isolation power transformer and switching unit and the N line of power input end, realize 90-528VAC full operating mode, start-up time is less than 4S, and stand-by power consumption is less than 0.3W.
The first-stage starting circuit 91 comprises a diode D1911, a resistor R1912, a resistor R3913, a resistor R4914, a resistor R5915, a resistor R6916 and a first-stage energy storage capacitor 917 which are sequentially connected in series, the diode D1911 is connected with an N line 11 at the power input end, the diode D1911 unidirectionally transmits current towards the resistor R1912, the first-stage energy storage capacitor 917 is grounded, a junction of the resistor R6916 and the first-stage energy storage capacitor 917 is a P point 918, and the switching unit and the diode D2 are respectively connected with the P point; the specification of the first-stage energy storage capacitor 917 is 2.2uF-4.7uF/50V. The second-stage starting circuit 92 comprises a diode D3931, a resistor R7932 and a second-stage energy storage capacitor 933 which are sequentially connected in series, the diode D3931 is connected with the isolation power transformer 4, the diode D3931 unidirectionally transmits current towards the direction of the resistor R7932, the second-stage energy storage capacitor 933 is grounded, the intersection of the resistor R7932 and the second-stage energy storage capacitor is a Q point 934, and the diode D2 is connected with the Q point; the specification of the second-stage energy storage capacitor 934 is 10uF-22uF/50V.
The RFI filter circuit 1 comprises an FR1 fuse resistor 101 and an LCM common mode inductor 102 connected with the FR1 fuse resistor 101, wherein the FR1 fuse resistor is connected in series on an L line 10, and the LCM common mode inductor 102 is bridged between the L line 10 and an N line 11; the LCM common mode inductor is an EMC device.
The input rectifying and filtering circuit 2 comprises a rectifying circuit 21 and a pi-shaped filtering circuit connected with the rectifying circuit, and the pi-shaped filtering circuit is positioned at the rear stage of the rectifying circuit; the rectifier circuit 21 is a bridge rectifier circuit composed of four diodes, two ends of the bridge rectifier circuit are respectively connected with the RFI filter circuit 1, and the other two ends of the bridge rectifier circuit are connected with the n-shaped filter circuit; the n-shaped filter circuit consists of a differential mode inductor LDM221, a high-voltage large electrolysis EC1222 and a high-voltage large electrolysis EC5223, a bridge rectifier circuit is connected with two ends of the high-voltage large electrolysis EC5223, and the high-voltage large electrolysis EC1222 is connected with an isolation power transformer.
The isolation power transformer 4 comprises a primary main winding NP41 and a primary auxiliary winding NVCC42 which are positioned on the primary side of the isolation power transformer, and a secondary main winding Ns43 which is positioned on the secondary side of the isolation power transformer, wherein one end of the primary main winding NP41 is connected with the positive electrode of the high-voltage large electrolysis EC1222, the other end of the primary main winding NP41 is connected with the switching unit, one end of the primary auxiliary winding NVCC42 is connected with the second-stage starting circuit 92, the other end of the primary auxiliary winding NVCC42 is grounded, and the two ends of the secondary main winding Ns43 are connected with the output rectifying and filtering circuit 5.
The switching unit 3 is a PWM power control IC31 with a built-in MOS, and the PWM power control IC is provided with a first pin 31 connected to the primary main winding NP, a Cs pin 32 connected to the feedback control circuit, a VDD pin 33 connected to the first stage start circuit, and a FB pin 34 connected to the photo signal isolation circuit.
The direct-current voltage output end comprises an output positive terminal 12 and a grounding terminal 13, one end of the isolation power transformer 4 is connected with the output rectifying and filtering circuit 5, and the other end of the isolation power transformer 4 is connected with the grounding terminal; the output rectifying and filtering circuit 5 realizes diode rectification output by the isolation power transformer, and comprises a diode D451 between the anode of the output end and the anode of the output end, and an energy storage filtering electrolytic capacitor EC452 between the anode of the output end and the ground end, wherein the energy storage filtering electrolytic capacitor EC452 is positioned at the next stage of the diode D451; the feedback control circuit 8 is a voltage operation feedback circuit, and is composed of a resistor R281 with one end grounded and the other end connected with the switching unit.
The photoelectric signal isolation circuit 6 is composed of a photoelectric coupler U2 61 positioned between the switching unit and the sampling compensation circuit, two input side ports and two output side ports are arranged on the photoelectric coupler U2 61, one of the two output side ports is connected with the anode of the direct current voltage output end, the other of the two output side ports is connected with the sampling compensation circuit 7, one of the two input side ports is connected with the switching unit 3, and the other of the two input side ports is grounded.
The sampling compensation circuit 7 comprises a voltage division network resistor R9 and a voltage division network resistor R10 which are mutually and serially connected between a positive terminal 12 and a ground terminal 13 of the direct-current voltage output terminal, a phase compensation capacitor C173, a phase compensation network resistor R8 74 and a voltage reference chip U3 75 which are parallelly connected with each other and serially connected with each other at two ends of the voltage division network resistor R10 72, a phase compensation capacitor C2 76 is parallelly connected with the phase compensation capacitor C1 and the phase compensation network resistor R8 74 which are serially connected with each other, a PIN R77, a PIN anode K78 and a PIN cathode P79 are arranged on the voltage reference chip U3 75, the common ends of the phase compensation capacitor C173 and the phase compensation capacitor C2 76 are connected with a PIN cathode P79, the common ends of the phase compensation capacitor C2 76 and the phase compensation network resistor R8 are respectively connected with the photoelectric signal isolation circuit 6 and the PIN cathode P79, and the PIN anode K78 is grounded.
The specific working principle is as follows:
by adding the quick start circuit, the first-stage energy storage capacitor is a capacitor with a small capacitance value, the specific specification is 2.2uF-4.7uF/50V, under the worst condition of 90VAC low-voltage input, at the moment of electrifying, the first-stage energy storage capacitor passes through the high-voltage start resistor, the start threshold voltage of the PWM power supply control IC can be quickly reached, the second-stage energy storage capacitor is a capacitor with a large capacitance value, the specific specification is 10uF-22uF/50V, after the start threshold value of the PWM power supply control IC is triggered, the energy requirements of each logic function module in the PWM power supply control IC are provided by the second-stage energy storage capacitor, the whole start circuit is isolated between the first-stage energy storage capacitor and the second-stage energy storage capacitor through the diode D2, and the energy can be only transmitted to the first-stage energy storage capacitor from the second-stage energy storage capacitor.
In the conventional scheme, for example, 90-528VAC full voltage input working condition, the requirement of starting time within 4S is met, 5 470K resistors are required to be connected in series according to theoretical calculation and actual debugging, at this time, when 528VAC is input, the standby power consumption can reach 0.45W, and the requirement of standby power consumption of 0.3W can not be met, specifically see table 1, for example, 90-528VAC full voltage input working condition, the standby power consumption of 0.3W max is met, according to theoretical calculation and actual debugging, 5 750K resistors are required to be connected in series, at this time, when 90VAC is input fully, the starting time reaches 17.56S, the requirement of starting time within 4S can not be met, in order to simultaneously meet the 0.3W standby power consumption and the 4S starting time in the industry, the utility model innovatively changes the high-voltage starting resistor from after being input into before being input into the rectifier bridge, meanwhile, a rectifier diode is added, theoretical calculation and actual debugging are carried out, only 5 510K 1206 packaging resistors are needed to be connected in series for high-voltage starting resistance, at the moment, 90VAC input full-load starting time is 3.83S, and when 528VAC input is carried out, standby power consumption is 0.27W, specifically, according to a test table 3, calculation is carried out according to a P = V ^2/R formula, under a 528VAC limit working condition, each resistor needs to bear power consumption of about 0.044W on average, rated power of the 1206 packaging resistor is 0.125W, voltage resistance is 200VAC, according to 60% power derating requirements, 5 1206 packaging chip resistors are connected in series to meet the power and voltage resistance derating requirements, and finally, product miniaturization is achieved, and meanwhile, long-term working reliability of products in severe environments is effectively improved.
The input end of the fast start circuit is connected with the RFI filter circuit, the output of the fast start circuit is connected with the VDD pin of the PWM power control IC31, the feedback control circuit 8 is a voltage operation feedback circuit, the input end of the feedback control circuit is connected with the photoelectric signal isolation circuit 6, the output end of the control circuit controls the high-frequency switch tube of the switching unit 3, the isolation power transformer 4 is connected with the output rectification filter circuit 5, the output rectification filter circuit 5 outputs direct-current voltage, the isolation power transformer 4 is also connected with the feedback control circuit 8 through the voltage operation feedback circuit, and the output rectification filter circuit 5 is connected with the feedback control circuit 8 through the voltage photoelectric signal isolation circuit 6.
The utility model discloses the principle is realized to the circuit, conventional starting circuit, and stand-by power and start-up time performance contradict each other, satisfy full operating mode 4S start-up time, just can't satisfy full operating mode 0.3W stand-by power, specifically see test data table 1, satisfy full operating mode 0.3W ' S stand-by power consumption, then can't satisfy full operating mode 4S start-up time, specifically see annex test data table 2, the utility model discloses the fine solution of circuit satisfies 0.3W stand-by power consumption of trade and 4S start-up time functional requirement simultaneously.
TABLE 1 data sheet for satisfying 4S startup time and standby power consumption under all conditions
TABLE 2 data sheet for the corresponding start-up time of 0.3W standby power consumption under all conditions
By adding a quick start-up starting circuit, a capacitor with a small capacitance value is adopted as a first-stage energy storage capacitor 917, the specific specification is 2.2Uf-4.7Uf/50V, at the moment of power-up, the first-stage energy storage capacitor 917 can quickly reach the start threshold voltage of the PWM power supply control IC through a high-voltage starting resistor, a capacitor with a large capacitance value is adopted as a second-stage energy storage capacitor 933, the specific specification is 10Uf-22Uf/50V, after the start threshold value of the IC is triggered, the energy requirement required by normal start of each logic function module in the PWM power supply control IC is provided by the second-stage energy storage capacitor 933, before the start of the PWM power supply control IC is completed, the PWM power supply control IC start voltage is higher than the undervoltage threshold value of the PWM power supply control IC, the module is ensured to be started successfully within a limited time, the first-stage energy storage capacitor 917 and the second-stage energy storage capacitor 933 are isolated by a diode D292, and under any working condition, the energy can only be transmitted from the second-stage energy storage capacitor 917 to the second-stage energy storage capacitor, and the energy storage capacitor can not be transmitted to the second-storage capacitor.
Use the utility model discloses the circuit, full operating mode can satisfy trade 0.3W stand-by power consumption and 4S start-up time simultaneously, specifically see data table 3:
TABLE 3 data sheet for simultaneously satisfying the power consumption of 0.3W standby machine and 4S startup time under all conditions
The above, only be the concrete implementation of the utility model, but the protection scope of the utility model is not limited to the listed embodiments, and any technical personnel familiar with this technical field are in the utility model discloses a within the scope, according to the technical scheme of the utility model patent and the design equivalence substitution or change, all belong to the protection scope of the utility model patent.
Claims (10)
1. A novel power converter module, its characterized in that: the novel power converter module comprises an RFI filter circuit, an input rectifying filter circuit, an exchange unit, an isolation power transformer and an output rectifying filter circuit which are connected in sequence from a power input end to a direct-current voltage output end, wherein the output rectifying filter circuit outputs direct-current voltage, a photoelectric signal isolation circuit connected with the exchange unit and a sampling compensation circuit connected with the photoelectric signal isolation circuit are arranged between the exchange unit and the direct-current voltage output end, and a feedback control circuit is arranged on the exchange unit; the power input end includes L line and N line, isolation power transformer with be provided with quick start circuit between the junction of switching unit and the N line of power input end, quick start circuit include with the N line of power input end link to each other first order starting circuit, with unidirectional transmission buffer circuit that first order starting circuit links to each other, with unidirectional transmission buffer circuit's second level starting circuit that unidirectional transmission buffer circuit links to each other, first order starting circuit with the switching unit links to each other, second level starting circuit with isolation power transformer links to each other, and first order starting circuit's capacitance value is less than second level starting circuit's capacitance value, unidirectional transmission buffer circuit is second level starting circuit to first order starting circuit unidirectional transmission's diode D2.
2. The novel power converter module of claim 1, wherein: the first-stage starting circuit comprises a diode D1, a resistor R3, a resistor R4, a resistor R5, a resistor R6 and a first-stage energy storage capacitor which are sequentially connected in series, the diode D1 is connected with an N line of the power input end, the diode D1 transmits current in a direction towards the resistor R1 in a one-way mode, the first-stage energy storage capacitor is grounded, the junction of the resistor R6 and the first-stage energy storage capacitor is a point P, and the exchange unit and the diode D2 are respectively connected with the point P; the specification of the first-stage energy storage capacitor is 2.2uF-4.7uF/50V.
3. The novel power converter module of claim 1, wherein: the second-stage starting circuit comprises a diode D3, a resistor R7 and a second-stage energy storage capacitor which are sequentially connected in series, the diode D3 is connected with the isolation power transformer, the diode D3 unidirectionally transmits current towards the resistor R7, the second-stage energy storage capacitor is grounded, the junction of the resistor R7 and the second-stage energy storage capacitor is a Q point, and the diode D2 is connected with the Q point; the specification of the second-stage energy storage capacitor is 10uF-22uF/50V.
4. The novel power converter module of claim 1, wherein: the RFI filter circuit comprises an FR1 fuse resistor and an LCM common-mode inductor connected with the FR1 fuse resistor, the FR1 fuse resistor is connected in series on an L line, and the LCM common-mode inductor is bridged between the L line and an N line; the LCM common mode inductor is an EMC device.
5. The novel power converter module of claim 1, wherein: the input rectifying and filtering circuit comprises a rectifying circuit and a pi-shaped filtering circuit connected with the rectifying circuit, and the pi-shaped filtering circuit is positioned at the rear stage of the rectifying circuit; the rectifier circuit is a bridge rectifier circuit consisting of four diodes, two ends of the bridge rectifier circuit are respectively connected with the RFI filter circuit, and the other two ends of the bridge rectifier circuit are connected with the n-shaped filter circuit; the n-shaped filter circuit consists of a differential mode inductor LDM, a high-voltage large electrolysis EC1 and a high-voltage large electrolysis EC5, a bridge rectifier circuit is connected with two ends of the high-voltage large electrolysis EC5, and the high-voltage large electrolysis EC1 is connected with an isolation power transformer.
6. The novel power converter module of claim 5, wherein: the isolation power transformer comprises a primary main winding NP and a primary auxiliary winding NVCC which are positioned on the primary side of the isolation power transformer, and a secondary main winding Ns which is positioned on the secondary side of the isolation power transformer, wherein one end of the primary main winding NP is connected with the anode of the high-voltage large electrolysis EC1, the other end of the primary main winding NP is connected with the switching unit, one end of the primary auxiliary winding NVCC is connected with the second-stage starting circuit, the other end of the primary auxiliary winding NVCC is grounded, and the two ends of the secondary main winding Ns are connected with the output rectifying and filtering circuit.
7. The novel power converter module of claim 6, wherein: the switching unit is a PWM power supply control IC with an MOS built in, and the PWM power supply control IC is provided with a first pin connected with a primary main winding NP, a Cs pin connected with a feedback control circuit, a VDD pin connected with the first-stage starting circuit and an FB pin connected with a photoelectric signal isolation circuit.
8. The novel power converter module of claim 1, wherein: the direct-current voltage output end comprises an output positive end and a grounding end, one end of the isolation power transformer is connected with the output rectifying and filtering circuit, and the other end of the isolation power transformer is connected with the grounding end; the output rectifying and filtering circuit realizes diode rectification output by the isolation power transformer and comprises a diode D4 between the anode of an output end and an energy storage filtering electrolytic capacitor EC4 between the anode of the output end and the grounding end, and the energy storage filtering electrolytic capacitor EC4 is positioned at the rear stage of the diode D4; the feedback control circuit is a voltage operation feedback circuit and consists of a resistor R2 with one end grounded and the other end connected with the exchange unit.
9. The novel power converter module of claim 1, wherein: the photoelectric signal isolation circuit is composed of a photoelectric coupler U2 which is positioned between the exchange unit and the sampling compensation circuit, two input side ports and two output side ports are arranged on the photoelectric coupler U2, one of the two output side ports is connected with the anode of a direct current voltage output end, the other of the two output side ports is connected with the sampling compensation circuit, one of the two input side ports is connected with the exchange unit, and the other of the two input side ports is grounded.
10. The novel power converter module of claim 1, wherein: the sampling compensation circuit comprises a voltage division network resistor R9 and a voltage division network resistor R10 which are mutually connected in series and arranged between the positive pole of the direct-current voltage output end and the grounding end, phase compensation capacitors C1, phase compensation network resistors R8 and a voltage reference chip U3 which are connected in series in parallel and arranged at two ends of the voltage division network resistor R10 in sequence, phase compensation capacitors C2 are connected in parallel on the phase compensation capacitors C1 and the phase compensation network resistors R8 which are connected in series, a PIN PIN anode K and a PIN cathode P are arranged on the voltage reference chip U3, the common end of the phase compensation capacitors C1 and the phase compensation capacitors C2 is connected with the PIN cathode P, the common end points of the phase compensation capacitors C2 and the phase compensation network resistors R8 are respectively connected with the photoelectric signal isolation circuit and the PIN cathode P, and the PIN anode K is grounded.
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| CN202222744432.6U CN218733891U (en) | 2022-10-18 | 2022-10-18 | Novel power converter module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222744432.6U CN218733891U (en) | 2022-10-18 | 2022-10-18 | Novel power converter module |
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