CN209844834U - Direct current power module - Google Patents
Direct current power module Download PDFInfo
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- CN209844834U CN209844834U CN201920781327.5U CN201920781327U CN209844834U CN 209844834 U CN209844834 U CN 209844834U CN 201920781327 U CN201920781327 U CN 201920781327U CN 209844834 U CN209844834 U CN 209844834U
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Abstract
The utility model discloses a direct current power module, which comprises a controller circuit, a voltage and current acquisition circuit, a relay control circuit, a communication interface circuit, a power circuit and an isolation power circuit; the control circuit is connected with the voltage and current acquisition circuit, the relay control circuit and the communication interface circuit; the power supply circuit is connected with the power supply ends of the controller circuit, the voltage and current acquisition circuit, the relay control circuit and the isolation power supply circuit; and the output end of the isolation power supply is connected with the voltage and current acquisition circuit. The circuit is simple and reliable, the precision is higher, the current adopts the constantan wire to collect, the voltage divides directly, adopt the way of the isolated output of linear opto-coupler, the circuit collects data acquisition, communication, control, protection in an organic whole, it is the ideal direct current power module circuit. The utility model discloses a circuit is a large amount of applications on certain shelter car block terminal direct current power module.
Description
Technical Field
The utility model relates to an electronic circuit technical field especially relates to a direct current power module.
Background
If the traditional intelligent power module, particularly the direct current power module, needs to detect the electrical parameters of the circuit, an external sensor and an intelligent instrument are generally used for detection, the system is complex in structure, centralized control and management are inconvenient, and miniaturization is difficult to achieve in volume; therefore, how to solve the above-mentioned problems of the dc power module needs to be considered at present.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's shortcoming, provide a direct current power module, solved the defect that traditional direct current power module exists.
The purpose of the utility model is realized through the following technical scheme: a direct current power module comprises a controller circuit, a voltage and current acquisition circuit, a relay control circuit, a communication interface circuit, a power circuit and an isolation power circuit; the control circuit is connected with the voltage and current acquisition circuit, the relay control circuit and the communication interface circuit; the power supply circuit is connected with the power supply ends of the controller circuit, the voltage and current acquisition circuit, the relay control circuit and the isolation power supply circuit; and the output end of the isolation power supply is connected with the voltage and current acquisition circuit.
Further, the controller circuit comprises a microprocessor U101, a crystal oscillator circuit and an LED state indicating circuit; the crystal oscillator circuit is connected with a port 2 and a port 3 of the microprocessor U101; the LED status indicating circuit is connected with the port 6 of the microprocessor U101.
Further, the voltage and current acquisition circuit comprises a voltage detection acquisition circuit and a current detection acquisition circuit; the voltage output end of the voltage detection acquisition circuit is connected with the port 8 of the microprocessor U101; and the current output end of the current detection acquisition circuit is connected with the port 7 of the microprocessor U101.
Further, the voltage detection acquisition circuit comprises detection divider resistors R601 and RW2 for acquiring voltage input, differential amplifiers U103B and U104B for voltage input and output signal conditioning, and an electrical isolator U602; the detection voltage-dividing resistors R601 and RW2 are connected with the input end of the differential amplifier U103B; the output end of the differential amplifier U103B is connected with the input end of the electrical isolator U602; the output end of the electrical isolator U602 is connected with the input end of the differential amplifier U104B; the output of the differential amplifier U104B is connected to port 8 of the microprocessor U101.
Further, the current detection acquisition circuit comprises a resistor RS1, differential amplifiers U105, U103A and U104A for current input and output signal conditioning, and an electrical isolator U603; the RS1 is connected with the input end of the differential amplifier U105; the output end of the differential amplifier U105 is connected with the input end of the differential amplifier U103A; the output end of the differential amplifier U103A is connected with the input end of the electrical isolator U603; the output end of the electrical isolator U603 is connected with the input end of the differential amplifier U104A; the output of the differential amplifier U104A is connected to port 7 of the microprocessor U101.
Further, the relay control circuit comprises a relay J2, a transistor Q2 and a diode D102; the control circuit formed by connecting the collector of the triode Q2 with the port 5 of the relay J2 and the protection circuit formed by connecting the diode D102 with the ports 4 and 5 of the relay J2 are used for controlling the on-off of a single-phase line; the base of transistor Q2 is connected to port 12 of the trivial microprocessor U101 through a resistor R6.
Further, the communication interface circuit comprises an interface chip U108 and TVS tubes DF3, DF4, D404, D405 and D406 for output protection; the TVS tubes DF3 and D404 are connected in parallel and then connected to port 6 of the interface chip U108; the TVS tubes DF4 and D406 are connected in parallel and then are connected with a port 7 of the interface chip U108; the TVS tube D405 is connected between the port 6 and the port 7 of the interface chip; the port 4 of the interface chip is connected with the port 17 of the microprocessor U101, and the ports 2 and 3 of the interface chip are connected with the port 18 of the microprocessor U101.
Further, the power circuit comprises a UM2+24V to +12V circuit, a UM0+12V to +5 circuit, a U13+5V to +3.3V circuit, and a UM4+5V to-12V circuit; the UM2+ 24V-to- +12V circuit, the UM0+ 12V-to- +5 circuit and the U13+ 5V-to- +3.3V circuit are sequentially connected in series; the UM2+ 24V-to-12V circuit, the UM0+ 12V-to-5 circuit and the UM4+ 5V-to-12V circuit are sequentially connected in series.
Further, the isolated power supply circuit includes a DC/DC isolated power supply module P1; the output end of the UM2+24V to +12V circuit is connected to the input end of the DC/DC isolation power supply module P1, and the output end of the DC/DC isolation power supply module P1 is connected to the voltage input end of the differential amplifier in the voltage current collecting circuit.
The utility model has the advantages of it is following: a direct current power module is simple and reliable in circuit and high in precision, current is collected by a constantan wire, voltage is directly divided, a linear optical coupler isolation output mode is adopted, and the circuit integrates data collection, communication, control and protection, and is an ideal direct current power module circuit. The utility model discloses a circuit is a large amount of applications on certain shelter car block terminal direct current power module.
Drawings
FIG. 1 is a schematic block diagram of a module
FIG. 2 is a circuit diagram of a controller;
FIG. 3 is a circuit diagram of voltage detection and acquisition;
FIG. 4 is a circuit diagram of current detection and acquisition;
FIG. 5 is a relay control circuit diagram;
FIG. 6 is a circuit diagram of a communication interface;
FIG. 7 is a power supply circuit diagram;
fig. 8 is an isolated power supply circuit diagram.
Detailed Description
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.
As shown in fig. 1, a dc power module includes a controller circuit, a voltage and current collecting circuit, a relay control circuit, a communication interface circuit, a power circuit and an isolation power circuit; the control circuit is connected with the voltage and current acquisition circuit, the relay control circuit and the communication interface circuit; the power supply circuit is connected with the power supply ends of the controller circuit, the voltage and current acquisition circuit, the relay control circuit and the isolation power supply circuit; and the output end of the isolation power supply is connected with the voltage and current acquisition circuit.
Further, as shown in fig. 2, the controller circuit includes a microprocessor U101, a crystal oscillator circuit and an LED status indicating circuit; the crystal oscillator circuit is connected with a port 2 and a port 3 of the microprocessor U101; the LED status indicating circuit is connected with the port 6 of the microprocessor U101.
Further, the crystal oscillator circuit is an 8M crystal oscillator circuit, and microprocessor adopts model STM32F030F4P6 to be 32 bit microprocessor, and it contains input voltage current acquisition signal input port (7pin, 8pin), 485 communication interface (17pin, 18pin), control relay I/O mouth (12 pin).
Further, as shown in fig. 3 and 4, the voltage and current collecting circuit includes a voltage detection collecting circuit and a current detection collecting circuit; the voltage output end of the voltage detection acquisition circuit is connected with the port 8 of the microprocessor U101; and the current output end of the current detection acquisition circuit is connected with the port 7 of the microprocessor U101.
Further, the voltage detection acquisition circuit comprises detection divider resistors R601 and RW2 for acquiring voltage input, differential amplifiers U103B and U104B for voltage input and output signal conditioning, and an electrical isolator U602; the detection voltage-dividing resistors R601 and RW2 are connected with the input end of the differential amplifier U103B; the output end of the differential amplifier U103B is connected with the input end of the electrical isolator U602; the output end of the electrical isolator U602 is connected with the input end of the differential amplifier U104B; the output of the differential amplifier U104B is connected to port 8 of the microprocessor U101.
Further, the current detection acquisition circuit comprises a resistor RS1, differential amplifiers U105, U103A and U104A for current input and output signal conditioning, and an electrical isolator U603; the RS1 is connected with the input end of the differential amplifier U105; the output end of the differential amplifier U105 is connected with the input end of the differential amplifier U103A; the output end of the differential amplifier U103A is connected with the input end of the electrical isolator U603; the output end of the electrical isolator U603 is connected with the input end of the differential amplifier U104A; the output of the differential amplifier U104A is connected to port 7 of the microprocessor U101.
Furthermore, the type of the electric isolator is an electric isolator of a linear optical coupler of the HCMR201, the type of the differential amplifier is AD8510, and the electric isolator is powered by double power supplies of positive and negative 12V, so that the level requirements input by the signal isolation module and the microprocessor are met.
Further, the resistor RS1 measures the current by collecting the voltage at two ends of the resistor, the voltage at two ends of the resistor and the current form a linear ratio relation, and the constantan wire resistor RS1 is adopted, the wire thickness of the constantan wire resistor RS1 is 2.5mm, and the constantan wire resistor can bear the rated current of 20A.
Further, wave capacitors C601, C602, C603, C604, C131, and C132 filter the input and output voltage and current signals, respectively.
Further, as shown in fig. 5, the relay control circuit includes a relay J2, a transistor Q2, and a diode D102; the control circuit formed by connecting the collector of the triode Q2 with the port 5 of the relay J2 and the protection circuit formed by connecting the diode D102 with the ports 4 and 5 of the relay J2 are used for controlling the on-off of a single-phase line; the base of transistor Q2 is connected to port 12 of the trivial microprocessor U101 through a resistor R6.
Further, the relay J2 is a 20A macro relay of a type SLA-12VDC-SL-C, a control circuit consisting of a triode Q2 and a diode D102 protection circuit, and is used for controlling the on-off of a single-phase line.
Further, as shown in fig. 6, the communication interface circuit includes an interface chip U108 and TVS tubes DF3, DF4, D404, D405, and D406 for output protection; the TVS tubes DF3 and D404 are connected in parallel and then connected to port 6 of the interface chip U108; the TVS tubes DF4 and D406 are connected in parallel and then are connected with a port 7 of the interface chip U108; the TVS tube D405 is connected between the port 6 and the port 7 of the interface chip; the port 4 of the interface chip is connected with the port 17 of the microprocessor U101, and the ports 2 and 3 of the interface chip are connected with the port 18 of the microprocessor U101.
Furthermore, a communication interface circuit chip is MAX485, five output TVS tubes D404, D405, D406, DF3 and DF4 are used for output protection, and interface data (mainly voltage and current and module fault information) are transmitted to a main controller or other external control equipment.
Further, as shown in fig. 7, the power circuit includes a UM2+24V to +12V circuit, a UM0+12V to +5V circuit, a U13+5V to +3.3V circuit, and a UM4+5V to-12V circuit; the UM2+ 24V-to- +12V circuit, the UM0+ 12V-to- +5 circuit and the U13+ 5V-to- +3.3V circuit are sequentially connected in series; the UM2+ 24V-to-12V circuit, the UM0+ 12V-to-5 circuit and the UM4+ 5V-to-12V circuit are sequentially connected in series.
Further, as shown in fig. 8, the isolated power supply circuit includes a small form factor DC/DC isolated power supply module P1; the output end of the UM2+24V to +12V circuit is connected to the input end of the DC/DC isolation power supply module P1, and the output end of the DC/DC isolation power supply module P1 is connected to the voltage input end of the differential amplifier in the voltage current collecting circuit.
The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (9)
1. A direct current power module, characterized by: the device comprises a controller circuit, a voltage and current acquisition circuit, a relay control circuit, a communication interface circuit, a power circuit and an isolation power circuit; the control circuit is connected with the voltage and current acquisition circuit, the relay control circuit and the communication interface circuit; the power supply circuit is connected with the power supply ends of the controller circuit, the voltage and current acquisition circuit, the relay control circuit and the isolation power supply circuit; and the output end of the isolation power supply is connected with the voltage and current acquisition circuit.
2. A dc power module according to claim 1, wherein: the controller circuit comprises a microprocessor U101, a crystal oscillator circuit and an LED state indicating circuit; the crystal oscillator circuit is connected with a port 2 and a port 3 of the microprocessor U101; the LED status indicating circuit is connected with the port 6 of the microprocessor U101.
3. A dc power module according to claim 2, wherein: the voltage and current acquisition circuit comprises a voltage detection acquisition circuit and a current detection acquisition circuit; the voltage output end of the voltage detection acquisition circuit is connected with the port 8 of the microprocessor U101; and the current output end of the current detection acquisition circuit is connected with the port 7 of the microprocessor U101.
4. A dc power module according to claim 3, wherein: the voltage detection acquisition circuit comprises detection divider resistors R601 and RW2 for acquiring voltage input, differential amplifiers U103B and U104B for conditioning voltage input and output signals, and an electrical isolator U602; the detection voltage-dividing resistors R601 and RW2 are connected with the input end of the differential amplifier U103B; the output end of the differential amplifier U103B is connected with the input end of the electrical isolator U602; the output end of the electrical isolator U602 is connected with the input end of the differential amplifier U104B; the output of the differential amplifier U104B is connected to port 8 of the microprocessor U101.
5. A dc power module according to claim 3, wherein: the current detection acquisition circuit comprises a resistor RS1, differential amplifiers U105, U103A and U104A for current input and output signal conditioning, and an electrical isolator U603; the RS1 is connected with the input end of the differential amplifier U105; the output end of the differential amplifier U105 is connected with the input end of the differential amplifier U103A; the output end of the differential amplifier U103A is connected with the input end of the electrical isolator U603; the output end of the electrical isolator U603 is connected with the input end of the differential amplifier U104A; the output of the differential amplifier U104A is connected to port 7 of the microprocessor U101.
6. A dc power module according to claim 2, wherein: the relay control circuit comprises a relay J2, a triode Q2 and a diode D102; the control circuit formed by connecting the collector of the triode Q2 with the port 5 of the relay J2 and the protection circuit formed by connecting the diode D102 with the ports 4 and 5 of the relay J2 are used for controlling the on-off of a single-phase line; the base of transistor Q2 is connected to port 12 of the trivial microprocessor U101 through a resistor R6.
7. A dc power module according to claim 2, wherein: the communication interface circuit comprises an interface chip U108 and TVS tubes DF3, DF4, D404, D405 and D406 for output protection; the TVS tubes DF3 and D404 are connected in parallel and then connected to port 6 of the interface chip U108; the TVS tubes DF4 and D406 are connected in parallel and then are connected with a port 7 of the interface chip U108; the TVS tube D405 is connected between the port 6 and the port 7 of the interface chip; the port 4 of the interface chip is connected with the port 17 of the microprocessor U101, and the ports 2 and 3 of the interface chip are connected with the port 18 of the microprocessor U101.
8. A DC power module according to claim 4 or 5, characterized in that: the power supply circuit comprises a UM2+ 24V-to-12V circuit, a UM0+ 12V-to-5V circuit, a U13+ 5V-to-3.3V circuit and a UM4+ 5V-to-12V circuit; the UM2+ 24V-to- +12V circuit, the UM0+ 12V-to- +5 circuit and the U13+ 5V-to- +3.3V circuit are sequentially connected in series; the UM2+ 24V-to-12V circuit, the UM0+ 12V-to-5 circuit and the UM4+ 5V-to-12V circuit are sequentially connected in series.
9. The dc power module of claim 8, wherein: the isolated power supply circuit comprises a DC/DC isolated power supply module P1; the output end of the UM2+24V to +12V circuit is connected to the input end of the DC/DC isolation power supply module P1, and the output end of the DC/DC isolation power supply module P1 is connected to the voltage input end of the differential amplifier in the voltage current collecting circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920781327.5U CN209844834U (en) | 2019-05-28 | 2019-05-28 | Direct current power module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920781327.5U CN209844834U (en) | 2019-05-28 | 2019-05-28 | Direct current power module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209844834U true CN209844834U (en) | 2019-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920781327.5U Active CN209844834U (en) | 2019-05-28 | 2019-05-28 | Direct current power module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209844834U (en) |
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2019
- 2019-05-28 CN CN201920781327.5U patent/CN209844834U/en active Active
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