CN111293907A - High-power supply - Google Patents

High-power supply Download PDF

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Publication number
CN111293907A
CN111293907A CN202010261149.0A CN202010261149A CN111293907A CN 111293907 A CN111293907 A CN 111293907A CN 202010261149 A CN202010261149 A CN 202010261149A CN 111293907 A CN111293907 A CN 111293907A
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CN
China
Prior art keywords
module
signal
operational amplifier
rectifier bridge
output
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Pending
Application number
CN202010261149.0A
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Chinese (zh)
Inventor
梁丙生
刘镇岭
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Guangzhou Jinghe Equipment Co ltd
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Guangzhou Jinghe Equipment Co ltd
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Priority to CN202010261149.0A priority Critical patent/CN111293907A/en
Publication of CN111293907A publication Critical patent/CN111293907A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/40—Conversion of ac power input into dc power output without possibility of reversal by combination of static with dynamic converters; by combination of dynamo-electric with other dynamic or static converters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only

Abstract

The embodiment of the invention discloses a high-power supply, which comprises: the device comprises a control module, a signal adjusting module, a voltage detection module and a current detection module; the signal adjusting module, the voltage detection module and the current detection module are electrically connected with the control module; the control module is used for generating a control signal according to a voltage detection signal input by the voltage detection module and a current detection signal input by the current detection module; the signal adjusting module comprises a first rectifier bridge circuit and a second rectifier bridge circuit, and the first rectifier bridge circuit receives the control signal and adjusts the output signal according to the control signal; the second rectifier bridge circuit receives the control signal and rectifies and stabilizes the input signal according to the control signal; so as to output voltage and current with controllable precision at the output end of the signal adjusting module. The high-power supply provided by the embodiment of the invention can realize higher precision of output voltage and output current.

Description

High-power supply
Technical Field
The embodiment of the invention relates to a power supply technology, in particular to a high-power supply.
Background
In various fields of production and life, a power supply is required to supply power to a plurality of devices to ensure the voltage required by normal work, for example, the power supply is required to supply power to a photoelectric display device during research work, and in order to meet various power supply requirements, the output power of the power supply and the precision of output voltage and current are important research contents.
At present, the conventional power supply has fewer general power supply output channels, smaller output power and output voltage and current precision, inconvenient operation and difficult satisfaction of power supply requirements of high power and high precision.
Disclosure of Invention
The embodiment of the invention provides a high-power supply to realize higher precision of output voltage and output current.
In a first aspect, an embodiment of the present invention provides a high power supply, including: the device comprises a control module, a signal adjusting module, a voltage detection module and a current detection module;
the signal adjusting module, the voltage detection module and the current detection module are electrically connected with the control module;
the control module is used for generating a control signal according to a voltage detection signal input by the voltage detection module and a current detection signal input by the current detection module;
the signal adjusting module comprises a first rectifier bridge circuit and a second rectifier bridge circuit, and the first rectifier bridge circuit receives the control signal and adjusts the output signal according to the control signal; the second rectifier bridge circuit receives the control signal and rectifies and stabilizes the input signal according to the control signal; so as to output voltage and current with controllable precision at the output end of the signal adjusting module.
Optionally, the first rectifier bridge circuit includes a selector switch, a first rectifier bridge, a first MOS transistor and a second MOS transistor, a first end and a second end of the first rectifier bridge serve as input ends of the first rectifier bridge circuit, the first end and the second end of the first rectifier bridge are connected to an input signal through the selector switch, a first pole of the first MOS transistor is electrically connected to the second end of the first rectifier bridge, a gate of the first MOS transistor is connected to a first power signal, when the first MOS transistor is switched on, a current input from the first pole is transmitted to the second pole, the first pole of the second MOS transistor is electrically connected to a third end of the first rectifier bridge, the second pole of the second MOS transistor is electrically connected to the second pole of the first MOS transistor, and the second MOS transistor controls a conduction state thereof according to a signal connected to the gate.
Optionally, the second rectifier bridge circuit includes a second rectifier bridge, a first voltage regulator and a second voltage regulator, a first end and a second end of the second rectifier bridge serve as input ends of the second rectifier bridge circuit, a third end of the second rectifier bridge is connected to the first power signal through the first voltage regulator, and a fourth end of the second rectifier bridge is connected to the second power signal through the second voltage regulator.
Optionally, the signal adjusting module further includes a plurality of output control switches, and the plurality of output control switches are electrically connected to the output end of the first rectifier bridge circuit and used for controlling an output path of the output signal.
Optionally, the current detection module includes a first operational amplifier circuit, a second operational amplifier circuit, and a third operational amplifier circuit, a first input terminal of the first operational amplifier circuit and a first input terminal of the second operational amplifier circuit are respectively used as a first input terminal and a second input terminal of the current detection module to be electrically connected to the control module, a second input terminal of the first operational amplifier circuit is connected to the second power signal, both a second input terminal of the second operational amplifier circuit and a first input terminal of the third operational amplifier circuit are electrically connected to an output terminal of the first operational amplifier circuit, an output terminal of the first operational amplifier circuit is used as a first output terminal of the current detection module, a second input terminal of the third operational amplifier circuit is grounded, and an output terminal of the third operational amplifier circuit is used as a second output terminal of the current detection module to be electrically connected to the control module.
Optionally, the voltage detection module includes a fourth operational amplifier circuit and a fifth operational amplifier circuit, a first input end of the fourth operational amplifier circuit is electrically connected to the control module as a first input end of the voltage detection module, a second input end of the fourth operational amplifier circuit is electrically connected to an output end of the fourth operational amplifier circuit, an output end of the fourth operational amplifier circuit is used as a first output end of the voltage detection module, a first input end of the fifth operational amplifier circuit is grounded, a second input end and an output end of the fifth operational amplifier circuit are both electrically connected to a second input end of the fourth operational amplifier circuit, and an output end of the fifth operational amplifier circuit is electrically connected to the control module as a second output end of the voltage detection module.
Optionally, the high-power supply further includes a current protection module, and the current protection module is electrically connected to the current detection module.
Optionally, the high-power supply further includes a digital-to-analog conversion module and an analog-to-digital conversion module, and the voltage detection module and the current detection module are electrically connected to the control module through the digital-to-analog conversion module and the analog-to-digital conversion module.
Optionally, the device further comprises a plurality of first circuit boards, each first circuit board is integrated with a control module, a signal adjusting module, a voltage detecting module and a current detecting module, and each first circuit board outputs a path of voltage and current.
Optionally, the high-power supply further includes a second circuit board, and the plurality of first circuit boards are all plugged on the second circuit board; the second circuit board further comprises a communication interface, the communication interface is electrically connected with the control module, and the communication interface is used for transmitting the master control signal of the serial port screen or the upper computer to the control module on each first circuit board.
The embodiment of the invention provides a high-power supply, which comprises a control module, a signal adjusting module, a voltage detection module and a current detection module, wherein the signal adjusting module, the voltage detection module and the current detection module are electrically connected with the control module, the control module can generate a control signal according to a voltage detection signal input by the voltage detection module and a current detection signal input by the current detection module, the signal adjusting module comprises a first rectifier bridge circuit and a second rectifier bridge circuit, the first rectifier bridge circuit receives the control signal and adjusts an output signal according to the control signal, and the second rectifier bridge circuit receives the control signal and rectifies and stabilizes an input signal according to the control signal so as to output voltage and current with controllable precision at the output end of the signal adjusting module. According to the high-power supply provided by the embodiment of the invention, the first rectifier bridge circuit can adjust the output signal according to the control signal, and the voltage and the current with controllable precision are output at the output end of the signal adjusting module, so that the controllable output voltage and the controllable output current have higher precision.
Drawings
Fig. 1 is a block diagram of a high power supply according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a signal conditioning module according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a current detection module according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a voltage detection module according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a current protection module according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a first circuit board and a second circuit board according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a first circuit board, a second circuit board and a transformer according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a main control chip of a second circuit board according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a block diagram of a high power supply according to an embodiment of the present invention, and referring to fig. 1, the high power supply includes a control module 10, a signal adjusting module 20, a voltage detecting module 30, and a current detecting module 40; the signal adjusting module 20, the voltage detecting module 30 and the current detecting module 40 are all electrically connected to the control module 10.
Wherein, the control module 10 is configured to generate a control signal according to the voltage detection signal input by the voltage detection module 30 and the current detection signal input by the current detection module 40; the signal adjusting module 20 includes a first rectifier bridge circuit 21 and a second rectifier bridge circuit 22, the first rectifier bridge circuit 21 receives the control signal and adjusts the output signal according to the control signal; the second rectifier bridge circuit 22 receives the control signal, and rectifies and stabilizes the input signal according to the control signal; to output a voltage and current with controllable accuracy at the output of the signal conditioning module 20.
Specifically, when the high power supply operates, the voltage detection module 30 and the current detection module 40 can respectively generate a voltage detection signal and a current detection signal according to an input signal, and respectively transmit the voltage detection signal and the current detection signal to the control module 10, the control module 10 can determine whether the received voltage detection signal and the received current detection signal are normal, the control module 10 generates a control signal when the voltage detection signal and the current detection signal are both normal, the second rectifier bridge circuit 22 in the signal adjustment module 20 receives the control signal, and rectifies and stabilizes the input signal according to the control signal, the first rectifier bridge circuit 21 receives the control signal, and adjusts the output signal according to the control signal, so that the signal adjustment module 20 can output a voltage and a current with controllable precision at an output end, for example, the output voltage of the high power supply can be 20V, the output current can reach 1A, the output precision is high (five parts per million), the minimum stable value of the output current is dozens of microamperes, and the power supply is suitable for the power supply of the photoelectric display device.
In the high-power supply provided by the embodiment, the first rectifier bridge circuit can adjust the output signal according to the control signal, and the voltage and the current with controllable precision are output at the output end of the signal adjusting module, so that the controllable output voltage and the controllable output current have higher precision.
Fig. 2 is a schematic structural diagram of a signal conditioning module according to an embodiment of the present invention, and referring to fig. 2, optionally, the first rectifier bridge circuit includes a selection switch K1, a first rectifier bridge D1, a first MOS transistor Q1 and a second MOS transistor Q2, a first end and a second end of the first rectifier bridge D1 are used as input ends of the first rectifier bridge circuit, the first end and the second end of the first rectifier bridge D1 are connected to an input signal through the selection switch K1, a first pole of the first MOS transistor Q1 is electrically connected to the second end of the first rectifier bridge D1, a gate of the first MOS transistor Q1 is connected to a first power signal + VCC, when the first MOS transistor Q1 is turned on, the current input by the first pole is transmitted to the second pole, the first pole of the second MOS tube Q2 is electrically connected with the third end of the first rectifier bridge, the second pole of the second MOS tube Q2 is electrically connected with the second pole of the first MOS tube Q1, and the second MOS tube Q2 controls the conducting state thereof according to the signal switched on by the grid.
Wherein, the first rectifier bridge circuit also includes circuit devices such as a capacitor and a resistor, the voltage of the first power signal + VCC may be +12V, the selection switch K1 may be a relay switch, the input terminal a1 of a relay of the relay switch is connected with a control signal, the first rectifier bridge circuit is connected with an input signal through the connection terminal P1, the selection switch K1 selects the connected input signal according to the control signal, for example, when the control signal is high level, the first rectifier bridge D1 is controlled to be connected with a signal input at the port 1 of the connection terminal P1, when the control signal is low level, the first rectifier bridge D1 is controlled to be connected with a signal input at the port 2 of the connection terminal P1, the gate of the first MOS transistor Q1 is connected with the first MOS signal through the port a2, the first MOS transistor controls the transmission state of the current input at the first pole to the second pole according to the first MOS signal connected at the gate, the gate of the second MOS transistor Q2 is connected with the second MOS signal through the port A3, the second MOS controls a transmission state of the current input from the first pole to the second pole according to the second MOS signal switched in by the gate, for example, when the first MOS is turned on, the voltage and the current output after being rectified by the first rectifier bridge D1 are transmitted from the first pole to the second pole, so that the voltage and the current are output through the first rectifier bridge circuit.
Optionally, the second rectifier bridge circuit includes a second rectifier bridge D2, a first voltage regulator U1 and a second voltage regulator U2, the first end and the second end of the second rectifier bridge D2 are used as input ends of the second rectifier bridge circuit, the third end of the second rectifier bridge D2 is connected to the first power signal + VCC through a first voltage regulator U1, and the fourth end of the second rectifier bridge D2 is connected to the second power signal-VCC through a second voltage regulator U2.
Specifically, the second rectifier bridge circuit still includes a plurality of electric capacities of being connected with two stabiliser electricity, the first end and the second end of second rectifier bridge D2 pass through binding post P1 and insert the input signal, the input signal carries out the rectification through second rectifier bridge D2, second rectifier bridge D2 exports the signal after the rectification to first stabiliser U1 and second stabiliser U2 respectively through third end and fourth end, carry out the steady voltage by first stabiliser U1 and second stabiliser U2 to the signal after the rectification, in order to guarantee output voltage's stability.
Optionally, the signal adjusting module further includes a plurality of output control switches, and the plurality of output control switches are electrically connected to the output end of the first rectifier bridge circuit and used for controlling an output path of the output signal.
Specifically, each output control switch is electrically connected with a resistor device, the plurality of output control switches comprise a first output control switch K2, a second output control switch K3 and a third output control switch K4, each output control switch can be a relay switch, each output control switch is connected with a switch signal through a port a4, an input end a5 of a relay of the first output control switch K2 is connected with the first switch control signal, an input end a6 of a relay of the second output control switch K3 is connected with the second switch control signal, an input end a7 of a relay of the third output control switch K4 is connected with the third switch control signal, each output control switch controls the on-off of each switch according to the respectively connected switch control signal, thereby controlling the output path of the output signal OUT, for example, when the switch of the first output control switch K2 is closed, the signal output by the first rectifier bridge circuit is output through the first output control switch.
Fig. 3 is a schematic structural diagram of a current detection module according to an embodiment of the present invention, referring to fig. 3, optionally, the current detection module includes a first operational amplifier circuit 41, a second operational amplifier circuit 42, and a third operational amplifier circuit 43, a first input terminal B1 of the first operational amplifier circuit 41 and a first input terminal B2 of the second operational amplifier circuit 42 are respectively used as a first input terminal and a second input terminal of the current detection module and electrically connected to the control module, a second input terminal of the first operational amplifier circuit 41 is connected to a second power signal + VCC, a second input terminal of the second operational amplifier circuit 42 and a first input terminal of the third operational amplifier circuit 43 are both electrically connected to an output terminal B3 of the first operational amplifier circuit 41, an output terminal B3 of the first operational amplifier circuit 41 is used as a first output terminal of the current detection module, a second input terminal of the third operational amplifier circuit 43 is grounded, the output terminal B5 of the third operational amplifier circuit 43 is electrically connected to the control module as a second output terminal of the current detection module.
The first operational amplifier circuit 41, the second operational amplifier circuit 42, and the third operational amplifier circuit 43 respectively include a first operational amplifier Z1, a second operational amplifier Z2, a third operational amplifier Z, and peripheral circuits including resistors, capacitors, and transistors, the voltage of the power signal + VDD connected to the current detection module may be +3.3V, the port B4 of the current detection module is electrically connected to the control module, the first input terminal B1 of the first operational amplifier circuit 41, i.e., the positive input terminal of the first operational amplifier Z1, may be connected to an input signal, and generate a current detection signal through the operational amplifier, where the current detection signal may be transmitted to the control module from the output terminal B5 of the third operational amplifier circuit 43, i.e., the output terminal of the third operational amplifier Z.
Fig. 4 is a schematic structural diagram of a voltage detection module according to an embodiment of the present invention, and referring to fig. 4, optionally, the voltage detection module includes a fourth operational amplifier circuit 31 and a fifth operational amplifier circuit 32, a first input end C1 of the fourth operational amplifier circuit 31 is electrically connected to the control module as a first input end of the voltage detection module, a second input end of the fourth operational amplifier circuit 31 is electrically connected to an output end C2 of the fourth operational amplifier circuit, an output end C2 of the fourth operational amplifier circuit 31 is electrically connected to a first output end of the voltage detection module, a first input end of the fifth operational amplifier circuit 32 is grounded, a second input end and an output end of the fifth operational amplifier circuit 32 are both electrically connected to a second input end of the fourth operational amplifier circuit, and an output end C3 of the fifth operational amplifier circuit 32 is electrically connected to the control module as a second output end of the voltage detection module.
Wherein, the fourth operational amplifier circuit 31 and the fifth operational amplifier circuit 32 respectively comprise a fourth operational amplifier Z4 and a fifth operational amplifier Z5 and respective peripheral circuits comprising a resistor, a capacitor and a transistor, a forward input end and a reverse input end of the fourth operational amplifier Z4 are respectively connected with power signals V + and V-, a port C4 of the voltage detection module is electrically connected with the control module, an output end C2 of the fourth operational amplifier circuit 31, i.e. an output end of the fourth operational amplifier Z4, can be electrically connected with an output end of the first operational amplifier circuit, a first input end C1 of the fourth operational amplifier circuit 31, i.e. a forward input end of the fourth operational amplifier Z4, can be connected with an input signal, and generate a voltage detection signal through the operational amplifiers, the voltage detection signal can be transmitted from the output terminal C3 of the fifth operational amplifier circuit 32, i.e., the output terminal of the fifth operational amplifier Z5, to the control module.
Fig. 5 is a schematic structural diagram of a current protection module according to an embodiment of the present invention, and referring to fig. 5, optionally, the high-power supply further includes a current protection module, and the current protection module is electrically connected to the current detection module.
The current protection module comprises a triode Q3, a diode D3 and a resistance-capacitance device electrically connected with a triode Q3 and a diode D3, wherein an input end E1 of the current protection module is electrically connected with an output end of a first operational amplifier circuit and is connected with a current signal output by the output end of the first operational amplifier circuit, an output end E2 of the current protection module is electrically connected with an output end of a second operational amplifier, when the current corresponding to the current signal connected to an input end E1 of the current protection module is small, the current is transmitted to the output end E2 of the current protection module through the diode D3, the base of a triode Q3 is electrically connected with the output end E2, the base current of a triode Q3 is also small, and therefore the triode Q3 is not conducted; when the current corresponding to the current signal accessed from the input end E1 of the current protection module is large, and the current is transmitted to the output end E2 of the current protection module through the diode D3, the triode Q3 with the large base current of the triode Q3 is turned on, and the current is transmitted to the first pole of the triode Q3 through the diode D3, and is transmitted to the second pole from the first pole of the triode Q3 to be led into the ground, so that the output current is limited, for example, the current protection module can limit the output current to 1.2A, and the power supply is prevented from being damaged due to the occurrence of the excessive current.
Optionally, the high-power supply further includes a digital-to-analog conversion module and an analog-to-digital conversion module, and the voltage detection module and the current detection module are electrically connected to the control module through the digital-to-analog conversion module and the analog-to-digital conversion module.
Specifically, the digital-to-analog conversion module may include a D/a conversion chip, and the analog-to-digital conversion module may include an a/D conversion chip, for example, a voltage signal and a current signal output by the control module are respectively transmitted to the voltage detection module and the current detection module through the digital-to-analog conversion module, and both the voltage detection signal generated by the voltage detection module and the current detection signal generated by the current detection module are converted into digital signals through the analog-to-digital conversion module and transmitted to the control module, so that the control module generates the control signal according to the voltage detection signal and the current detection signal.
Fig. 6 is a schematic structural diagram of a first circuit board and a second circuit board according to an embodiment of the present invention, fig. 7 is a schematic structural diagram of a first circuit board, a second circuit board and a transformer according to an embodiment of the present invention, and with reference to fig. 6 and fig. 7, optionally, the high-power supply further includes a plurality of first circuit boards 100, each first circuit board 100 is integrated with a control module, a signal adjusting module, a voltage detecting module and a current detecting module, and each first circuit board 100 outputs a voltage and a current.
The first circuit board 100 is further provided with an input power terminal 110 for accessing a power supply to supply power to the first circuit board 100, the high-power supply further includes a transformer 300 electrically connected to the first circuit board 100, the transformer 300 is configured to provide input voltage and input current to the first circuit board 100, each first circuit board 100 has one output, and each output does not affect each other, so that the plurality of first circuit boards 100 form multi-channel output, and if the number of the first circuit boards 100 is eight, an eight-channel high-power supply can be formed.
Optionally, the high-power supply further includes a second circuit board 200, and the plurality of first circuit boards 100 are all plugged on the second circuit board 200; the second circuit board 200 further includes a communication interface 210, the communication interface 210 is electrically connected to the control module, and the communication interface 210 is configured to transmit a main control signal of the upper computer to the control module on each first circuit board 100.
Specifically, a master control signal of the upper computer is transmitted to each first circuit board 100 through a communication interface 210 arranged on the second circuit board 200, a master control signal of the serial port screen can be transmitted to each first circuit board 100 through another communication interface arranged on the second circuit board 200, the serial port screen or the upper computer can realize program control of the high-power supply through the master control signal transmitted to the control module of the first circuit board 100, a cooling fan 220 is further arranged on the second circuit board 200 and can cool the second circuit board 200 and the first circuit board 100 close to the cooling fan 220, the second circuit board 200 further comprises a master control chip, fig. 8 is a schematic diagram of the master control chip of the second circuit board provided by the embodiment of the present invention, the master control chip is an STM chip and is in communication with the serial port screen and the upper computer, the master control chip transmits the master control signal of the serial port screen or the upper computer to each first circuit board 100 through the communication interface 210, the control modules on the first circuit board 100 may also employ STM chips.
According to the high-power supply provided by the embodiment, the plurality of first circuit boards can form multi-channel output, the serial port screen or the upper computer can realize program control of the high-power supply through the master control signal transmitted to the control module of the first circuit board, the first rectifier bridge circuit can adjust the output signal according to the control signal, and voltage and current with controllable precision are output at the output end of the signal adjusting module, so that the controllable output voltage and the controllable output current have higher precision, and high precision, multi-channel and program control of the high-power supply can be realized.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (10)

1. A high power supply, comprising: the device comprises a control module, a signal adjusting module, a voltage detection module and a current detection module;
the signal adjusting module, the voltage detecting module and the current detecting module are all electrically connected with the control module;
the control module is used for generating a control signal according to a voltage detection signal input by the voltage detection module and a current detection signal input by the current detection module;
the signal adjusting module comprises a first rectifier bridge circuit and a second rectifier bridge circuit, and the first rectifier bridge circuit receives the control signal and adjusts an output signal according to the control signal; the second rectifier bridge circuit receives the control signal and rectifies and stabilizes the input signal according to the control signal; so as to output voltage and current with controllable precision at the output end of the signal adjusting module.
2. The high power supply according to claim 1, wherein the first rectifier bridge circuit comprises a selection switch, a first rectifier bridge, a first MOS transistor and a second MOS transistor, the first end and the second end of the first rectifier bridge are used as input ends of the first rectifier bridge circuit, the first end and the second end of the first rectifier bridge are connected with the input signal through the selection switch, the first pole of the first MOS tube is electrically connected with the second end of the first rectifier bridge, the grid of the first MOS tube is connected with a first power supply signal, when the first MOS tube is conducted, the current input by the first pole is transmitted to the second pole, the first pole of the second MOS tube is electrically connected with the third end of the first rectifier bridge, and the second diode of the second MOS tube is electrically connected with the second diode of the first MOS tube, and the second MOS tube controls the conduction state of the second MOS tube according to a signal accessed by the grid electrode.
3. The high power supply according to claim 1, wherein the second rectifier bridge circuit comprises a second rectifier bridge, a first voltage regulator and a second voltage regulator, a first end and a second end of the second rectifier bridge serve as input ends of the second rectifier bridge circuit, a third end of the second rectifier bridge is connected to the first power supply signal through the first voltage regulator, and a fourth end of the second rectifier bridge is connected to the second power supply signal through the second voltage regulator.
4. The high power supply according to claim 1, wherein the signal conditioning module further comprises a plurality of output control switches electrically connected to the output terminal of the first rectifier bridge circuit for controlling the output path of the output signal.
5. The power supply according to claim 1, wherein the current detection module comprises a first operational amplifier circuit, a second operational amplifier circuit and a third operational amplifier circuit, a first input terminal of the first operational amplifier circuit and a first input terminal of the second operational amplifier circuit are electrically connected to the control module as a first input terminal and a second input terminal of the current detection module, respectively, a second input terminal of the first operational amplifier circuit is connected to the second power signal, a second input terminal of the second operational amplifier circuit and a first input terminal of the third operational amplifier circuit are both electrically connected to an output terminal of the first operational amplifier circuit, an output terminal of the first operational amplifier circuit is used as a first output terminal of the current detection module, and a second input terminal of the third operational amplifier circuit is grounded, and the output end of the third operational amplification circuit is used as the second output end of the current detection module and is electrically connected with the control module.
6. The high power supply according to claim 1, wherein the voltage detection module comprises a fourth operational amplifier circuit and a fifth operational amplifier circuit, a first input end of the fourth operational amplifier circuit is used as a first input end of the voltage detection module and is electrically connected with the control module, a second input terminal of the fourth operational amplifier circuit is electrically connected to an output terminal of the fourth operational amplifier circuit, the output end of the fourth operational amplifier circuit is used as the first output end of the voltage detection module, a first input end of the fifth operational amplifier circuit is grounded, a second input end and an output end of the fifth operational amplifier circuit are both electrically connected with a second input end of the fourth operational amplifier circuit, and the output end of the fifth operational amplifier circuit is used as the second output end of the voltage detection module and is electrically connected with the control module.
7. The high power supply according to claim 1, further comprising a current protection module electrically connected to the current detection module.
8. The high power supply according to claim 1, further comprising a digital-to-analog conversion module and an analog-to-digital conversion module, wherein the voltage detection module and the current detection module are electrically connected to the control module through the digital-to-analog conversion module and the analog-to-digital conversion module.
9. The high power supply according to claim 1, further comprising a plurality of first circuit boards, wherein each of the first circuit boards integrates the control module, the signal adjusting module, the voltage detecting module and the current detecting module, and each of the first circuit boards outputs a voltage and a current.
10. The high power supply according to claim 9, further comprising a second circuit board, wherein a plurality of said first circuit boards are all plugged on said second circuit board; the second circuit board further comprises a communication interface, the communication interface is electrically connected with the control module, and the communication interface is used for transmitting a master control signal of a serial port screen or an upper computer to each control module on the first circuit board.
CN202010261149.0A 2020-04-03 2020-04-03 High-power supply Pending CN111293907A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010261149.0A CN111293907A (en) 2020-04-03 2020-04-03 High-power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010261149.0A CN111293907A (en) 2020-04-03 2020-04-03 High-power supply

Publications (1)

Publication Number Publication Date
CN111293907A true CN111293907A (en) 2020-06-16

Family

ID=71027559

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010261149.0A Pending CN111293907A (en) 2020-04-03 2020-04-03 High-power supply

Country Status (1)

Country Link
CN (1) CN111293907A (en)

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