CN208736930U - Micro-grid energy storage system current detection means - Google Patents
Micro-grid energy storage system current detection means Download PDFInfo
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- CN208736930U CN208736930U CN201821472557.5U CN201821472557U CN208736930U CN 208736930 U CN208736930 U CN 208736930U CN 201821472557 U CN201821472557 U CN 201821472557U CN 208736930 U CN208736930 U CN 208736930U
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Abstract
The utility model relates to energy-storage system technical field of current detection, more particularly to a kind of micro-grid energy storage system current detection means, the micro-grid energy storage system current detection means, including current divider, it further include the current acquisition analog-to-digital conversion module being connected with the current divider, current acquisition analog-to-digital conversion module is connected with current acquisition control module, current acquisition control is connected by communication isolating control module with data communication conversion module, and master control power supply module is that current acquisition analog-to-digital conversion module and current acquisition control module are powered.The utility model overcomes that current detection means detection accuracy in the prior art is low, at high cost, communication reliability is poor and the biggish deficiency of volume, it realizes and demand is detected to the high-precision of electric current in micro-grid energy storage system, and the micro-grid energy storage system current detection means is at low cost, communication reliability is high, small in size.
Description
Technical field
The utility model relates to energy-storage system technical field of current detection, and in particular to a kind of micro-grid energy storage system electricity consumption
Flow detection device.
Background technique
Current detecting is the essential key parameter detection of micro-grid energy storage system, is to guarantee the safe work of battery pack
One of important parameter of work.Existing current detecting means are summarised as resistance detection and current transformer detection two major classes inspection substantially
Survey mode.Current transformer detects most common means and current or voltage type Hall current sensor is used to carry out loop current
Detection, such mode circuit design is simple, fast response time, but haves the defects that occupied space is big, at high cost and easy to damage,
And current measurement precision is higher, the electric current of measurement is bigger, and volume is bigger and cost is higher.Resistance class detection mode uses substantially
The mode of current divider carries out, and current divider connection type is simple, obtains comparing due to it is hardly damaged the characteristics of and is widely applied, but
Its current resolution range is relatively narrow and telecommunication circuit reliability is relatively low, causes its current measurement precision and communication reliability that can not expire
The circuit more demanding to detection accuracy and communication reliability such as sufficient micro-grid energy storage system, to limit its scope of application.
Utility model content
In order to solve the above technical problems, the purpose of this utility model is that: a kind of micro-grid energy storage system electric current is provided
Detection device, it is at low cost, small in size, communication reliability is good, measurement accuracy is high.
The technical scheme adopted by the utility model for solving the technical problem is:
The micro-grid energy storage system current detection means, including current divider further include being connected with the current divider
Current acquisition analog-to-digital conversion module, current acquisition analog-to-digital conversion module are connected with current acquisition control module, current acquisition control
It is connected by communication isolating control module with data communication conversion module, master control power supply module is current acquisition analog-to-digital conversion module
It powers with current acquisition control module.
When needing to carry out current detecting, current acquisition control module sends acquisition to current acquisition analog-to-digital conversion module and refers to
It enables, the analog current signal of current divider, which is converted to current acquisition control module, by current acquisition analog-to-digital conversion module to connect
The digital signal of receipts, then current acquisition control module is passed through the signal after carrying out Phototube Coupling by communication isolating control module
Data communication conversion module is sent to micro-grid energy storage system.Above-mentioned connection and communication mode overcome electric current inspection in the prior art
It surveys that device detection accuracy is low, at high cost, communication reliability is poor and the biggish deficiency of volume, realizes to micro-grid energy storage system electric current
High-precision detection, entire micro-grid energy storage system current detection means is at low cost, communication reliability is high, small in size.
Wherein, preferred embodiment are as follows:
The current acquisition control module, which is connected, uses single-chip microcontroller.
The current acquisition analog-to-digital conversion module includes serial modulus conversion chip U1, zener diode W1, triode Q1-
The difference analogue input positive terminal pin of Q2,1 foot of current divider interface FLQ1 and serial modulus conversion chip U1 are connected, serial mould
The difference analogue input negative pole end pin of number conversion chip U1 is connected with the positive terminal of zener diode W1 and 5V power ground respectively,
The reference voltage input terminal pin of serial modulus conversion chip U1 is connected with 3.3V positive pole, serial modulus conversion chip U1's
Negative power end pin connects 5V power ground, and the serial data output terminal of serial modulus conversion chip U1 connects current acquisition control module
A port I/O, the positive power source terminal pin of serial modulus conversion chip U1 connects 5V positive pole, and 5V positive pole passes through resistance
The collector of R1 connecting triode Q1, the base stage of triode Q1 pass through an I/O of resistance R3 connection current acquisition control module
Port, network label CS1 and the chip select terminal of serial modulus conversion chip U1 between the collector and resistance R1 of triode Q1 draw
Foot is connected, and the emitter of triode Q1 connects 5V power ground, and the collector of triode Q2 passes through resistance R2 connection 5V positive pole,
The base stage of triode Q2 passes through a port I/O of resistance R4 connection current acquisition control module, and the emitter of triode Q2 connects
5V power ground is connect, the string of the network label CLK1 between the collector and resistance R2 of triode Q2 and serial modulus conversion chip U1
Row clock input terminal pin is connected, and is parallel with resistance R5 between the base stage and emitter of triode Q2.
The communication isolating control module includes that triode Q3-Q7 and photoelectrical coupler P1,5V positive pole pass through resistance
1 foot of R11 connection photoelectrical coupler P1 emission side, RS485 communication power supply anode by resistance R13 connection photoelectrical coupler P1 by
2 feet of 16 feet of light side, photoelectrical coupler P1 emission side are connected with the collector of triode Q4, and the base stage of triode Q4 passes through electricity
Resistance R8 is connected with the end current acquisition control module TX, and the emitter of triode Q4 is connected with 5V positive pole, RS485 communication power supply
Anode is connected by resistance R14 with the collector of triode Q6, and the collection of resistance R14 Yu triode Q6 is arranged in network label TXX
Between electrode, the base stage of triode Q6 is connected with 16 feet of photoelectrical coupler P1 sensitive side, the emitter and photoelectricity of triode Q6
15 feet of coupler P1 are connected with RS485 communication power supply, and 5V positive pole is sent out by resistance R10 connection photoelectrical coupler P1
6 feet of 5 feet of light side, photoelectrical coupler P1 are connected with the collector of triode Q3, the base stage of triode Q3 by resistance R18 with
Current control module is connected, and the emitter of triode Q3 is connected with 5V power ground, and 12 feet of photoelectrical coupler P1 sensitive side pass through
Resistance R15 is connected with RS485 communication power supply anode, 11 feet and RS485 communication power supply of photoelectrical coupler P1 sensitive side, network
Label DR is arranged between resistance R15 and 12 feet of photoelectrical coupler P1 sensitive side, and RS485 communication power supply anode passes through resistance R9
7 feet of photoelectrical coupler P1 emission side are connected, 8 feet of photoelectrical coupler P1 emission side are connected with the collector of triode Q7, and three
The base stage of pole pipe Q7 is connected by resistance R12 with network label RXX, the emitter of triode Q7 with RS485 communication power supply phase
Even, 5V positive pole is connected by resistance R16 with 10 feet of photoelectrical coupler P1 sensitive side, and the 9 of photoelectrical coupler P1 sensitive side
Foot is connected with 5V power ground, and 5V positive pole is connected by resistance R17 with the collector of triode Q5, and network label RX setting exists
Between resistance R17 and the collector of triode Q5, the base stage of triode Q5 is connected with 10 feet of photoelectrical coupler P1 sensitive side, and three
The emitter of pole pipe Q5 is connected with 5V power ground, and network label RX is connected with current control module, network label TXX, RXX, DR
With data communication conversion module.
The data communication conversion module includes diode D1, connecting terminal J1 and differential balance type transponder chip U3,
The receiver output end of differential balance type transponder chip U3 is connected with the network label RXX of communication isolating control module, difference
The driver input end of balanced type transponder chip U3 is connected with the network label TXX of communication isolating control module, differential balance
Network of the receiver output enable end and driver output enable end of type transponder chip U3 with communication isolating control module
Label DR is connected, and the power end of differential balance type transponder chip U3 is connected with RS485 communication power supply anode, and differential balance type is received
The ground terminal of hair device chip U3 is connected with RS485 communication power supply, the input of the receiver of differential balance type transponder chip U3 with
Diode D1 and resistance R20 are successively parallel between driver output end and ground terminal, differential balance type transponder chip U3's
Parallel resistance between power end and the receiver anti-phase input and driver reversed-phase output of differential balance type transponder chip U3
R21's, differential balance type transponder chip U3 receives device input and driver output end and differential balance type transponder chip U3's
Parallel resistance R19 between receiver anti-phase input and driver reversed-phase output, the reception of differential balance type transponder chip U3
Two poles are also parallel between device anti-phase input and driver reversed-phase output and the ground terminal of differential balance type transponder chip U3
The receipts device of pipe D1, differential balance type transponder chip U3 input and driver output end is connected with 1 foot of connecting terminal J1, difference
The receiver anti-phase input and driver reversed-phase output of balanced type transponder chip U3 is connected with 2 feet of connecting terminal J1.
The master control power supply module includes zener diode W2, capacitor C3-C6, inductance L1 and voltage-stablizer V1, two pole of pressure stabilizing
The negative pole end of pipe W2 is connected with 5V positive pole, and the positive terminal of zener diode W2 is connected with 5V power ground, 5V positive pole and
Shunt capacitance C3 is gone back between 5V power ground, the input terminal pin of voltage-stablizer V1 is connected with 5V positive pole, the ground connection of voltage-stablizer V1
End pin is connected with 5V power ground, and the output pin of voltage-stablizer V1 is connected by inductance L1 with 3.3V positive pole, 3.3V electricity
Successively be parallel with capacitor C5 and C6 between source anode and 5V positive pole, the output pin of voltage-stablizer V1 also with 5V power ground it
Between be parallel with capacitor C4, inductance L1 is arranged between C4 and C5.
Compared with prior art, the utility model has the following beneficial effects:
The utility model overcomes that current detection means detection accuracy in the prior art is low, at high cost, communication reliability is poor
With the biggish deficiency of volume, realizes and the high-precision of micro-grid energy storage system electric current is detected, entire micro-grid energy storage system electricity consumption
Flow detection device is at low cost, communication reliability is high, small in size.When needing to carry out current detecting, current acquisition control module is to electricity
Stream acquisition analog-to-digital conversion module sends acquisition instructions, by current acquisition analog-to-digital conversion module by the analog current signal of current divider
Be converted to current acquisition control module can received digital signal, then current acquisition control module pass through communication isolating control
Module sends micro-grid energy storage system through data communication conversion module for the signal after carrying out Phototube Coupling.Above-mentioned connection and logical
Letter mode.
Detailed description of the invention
Fig. 1 micro-grid energy storage system current detection means structural block diagram.
Fig. 2 current acquisition analog-to-digital conversion module circuit diagram.
Fig. 3 current acquisition control module circuit diagram.
Fig. 4 master control power supply module circuit diagram.
Fig. 5 communication isolating control module circuit diagram.
Fig. 6 data communication conversion module circuit diagram.
Specific embodiment
The utility model embodiment is described further with reference to the accompanying drawing:
Embodiment 1:
As shown in Figure 1, micro-grid energy storage system current detection means described in the present embodiment, including current divider, further include
The current acquisition analog-to-digital conversion module being connected with the current divider, current acquisition analog-to-digital conversion module and current acquisition control module
It is connected, current acquisition control is connected by communication isolating control module with data communication conversion module, and master control power supply module is electricity
Stream acquisition analog-to-digital conversion module and the power supply of current acquisition control module.
As shown in Fig. 2, the current acquisition analog-to-digital conversion module includes serial modulus conversion chip U1, zener diode
The difference analogue input positive terminal of W1, triode Q1-Q2,1 foot of current divider interface FLQ1 and serial modulus conversion chip U1 draw
Foot is connected, the difference analogue of serial modulus conversion chip U1 input negative pole end pin respectively with the positive terminal of zener diode W1 and
5V power ground is connected, and the reference voltage input terminal pin of serial modulus conversion chip U1 is connected with 3.3V positive pole, serial mould
The negative power end pin of number conversion chip U1 connects 5V power ground, and the serial data output terminal of serial modulus conversion chip U1 connects electricity
A port I/O of acquisition control module is flowed, the positive power source terminal pin of serial modulus conversion chip U1 connects 5V positive pole, 5V electricity
Source anode passes through the collector of resistance R1 connecting triode Q1, and the base stage of triode Q1 is controlled by resistance R3 connection current acquisition
One port I/O of module, network label CS1 and serial modulus conversion chip between the collector and resistance R1 of triode Q1
The chip select terminal pin of U1 is connected, and the emitter of triode Q1 connects 5V power ground, and the collector of triode Q2 is connected by resistance R2
5V positive pole is connect, the base stage of triode Q2 passes through a port I/O of resistance R4 connection current acquisition control module, triode
The emitter of Q2 connects 5V power ground, and the network label CLK1 and serial modulus between the collector and resistance R2 of triode Q2 turn
The serial clock input terminal pin for changing chip U1 is connected, and resistance R5 is parallel between the base stage and emitter of triode Q2, uses
Above-mentioned device, circuit cost is low, and circuit reliability is high, small in size.Using the 20 Bits Serial analog-to-digital conversion cores of model CS5513
Current sample resolution ratio, can be increased to by piece U1 and single-chip microcontroller U2 as shown in connection with fig. 3 by the maximum 75mV of current divider
0.003mV.When the reference voltage of serial modulus conversion chip U1 is 3.3V, i.e. 3300mv, in terms of maximum 20 a/d resolutions
It calculates, maximum resolution is 3300/2^20=0.00314712524 ≈ 0.003, is corresponded in terms of 75mv by current divider maximum current 400A
It calculates, the minimum reachable 0.003*400/75=0.016A of current resolution.
The current acquisition control module, which is connected, uses single-chip microcontroller, model STM8S003F3.Data processing is quick and easy,
It is at low cost, it can be ensured that telecommunication circuit high reliablity, small in size, data communication response is timely；As shown in figure 3, the 13 of single-chip microcontroller U2
Foot is connected with the serial data output terminal of serial modulus conversion chip U1, and 15 feet of single-chip microcontroller U2 pass through resistance R3 and triode Q1
Base stage is connected, and for 17 feet of single-chip microcontroller U2 by resistance R4 and triode Q2 base stage, 13 feet of single-chip microcontroller U2 receive current detecting
After serial data, data are sent to after the pin 2 of single-chip microcontroller U2 is sent to communication isolating control module progress Phototube Coupling and are led to
Believe module processing, is sent to other at the same level or host computer signal receiving units finally by RS485 communication protocol.Single-chip microcontroller
Shunt capacitance C1 between 7 feet and 8 feet of U2,7 feet of single-chip microcontroller U2 are connected with 5V power ground, 9 feet and 5V power supply of single-chip microcontroller U2
Anode is connected, and 4 feet of single-chip microcontroller U2 are connected by R6 with 5V positive pole, connects between 4 feet and 5V power ground of single-chip microcontroller U2
There is capacitor C2, the negative pole end of Light-emitting diode LED 1 is connected with 11 feet of single-chip microcontroller U2, and the positive terminal of Light-emitting diode LED 1 is logical
It crosses resistance R7 and is connected Light-emitting diode LED 1 with network label 5VCC+ for determining the communication of entire high-precision current acquisition device
Whether normal, it is the fixed flashing state of frequency if communication is normal.
As shown in figure 4, communication isolating control module includes that triode Q3-Q7 and photoelectrical coupler P1,5V positive pole are logical
1 foot of resistance R11 connection photoelectrical coupler P1 emission side is crossed, RS485 communication power supply anode passes through resistance R13 connection photoelectric coupling
2 feet of 16 feet of device P1 sensitive side, photoelectrical coupler P1 emission side are connected with the collector of triode Q4, the base stage of triode Q4
By No. 2 pins of resistance R8 and single-chip microcontroller U2, the emitter of triode Q4 is connected with 5V positive pole, RS485 communication power supply
Anode is connected by resistance R14 with the collector of triode Q6, and the collection of resistance R14 Yu triode Q6 is arranged in network label TXX
Between electrode, the base stage of triode Q6 is connected with 16 feet of photoelectrical coupler P1 sensitive side, the emitter and photoelectricity of triode Q6
15 feet of coupler P1 are connected with RS485 communication power supply, and 5V positive pole is sent out by resistance R10 connection photoelectrical coupler P1
6 feet of 5 feet of light side, photoelectrical coupler P1 are connected with the collector of triode Q3, the base stage of triode Q3 by resistance R18 with
No. 1 pin of single-chip microcontroller U2 is connected, and the emitter of triode Q3 is connected with 5V power ground, 12 feet of photoelectrical coupler P1 sensitive side
It is connected by resistance R15 with RS485 communication power supply anode, 11 feet and RS485 communication power supply of photoelectrical coupler P1 sensitive side,
Network label DR is arranged between resistance R15 and 12 feet of photoelectrical coupler P1 sensitive side, and RS485 communication power supply anode passes through electricity
Hinder 7 feet of R9 connection photoelectrical coupler P1 emission side, the collector phase of 8 feet and triode Q7 of photoelectrical coupler P1 emission side
Even, the base stage of triode Q7 is connected by resistance R12 with network label RXX, the emitter and RS485 communication power supply of triode Q7
Ground is connected, and 5V positive pole is connected by resistance R16 with 10 feet of photoelectrical coupler P1 sensitive side, photoelectrical coupler P1 sensitive side
9 feet be connected with 5V power ground, 5V positive pole is connected by resistance R17 with the collector of triode Q5, and network label RX is set
It sets between resistance R17 and the collector of triode Q5, the base stage and 10 foot phases of photoelectrical coupler P1 sensitive side of triode Q5
Even, the emitter of triode Q5 is connected with 5V power ground, and network label RX is connected with No. 10 pins of single-chip microcontroller U2, network label
TXX, RXX, DR are with data communication conversion module, appointing in the model PS2801-4 or TLP281-4GB of photoelectrical coupler P1
It is a kind of.Being effectively isolated for current acquisition signal and RS485 signal of communication is realized by photoelectrical coupler P1, as photoelectrical coupler P1
Network the label TX or RXX of emission side when thering is serial communication data to send or receive, network the label RX and TXX of sensitive side
The Phototube Coupling that same rate therewith can be generated sends and receivees serial data communication signal, circuit safety high reliablity, and data are led to
Letter response is in time and circuit is small in size.
As shown in figure 5, the data communication conversion module includes diode D1, connecting terminal J1 and the transmitting-receiving of differential balance type
The receiver output end of device chip U3, differential balance type transponder chip U3 and the network label RXX of communication isolating control module
It is connected, the driver input end of differential balance type transponder chip U3 is connected with the network label TXX of communication isolating control module,
The receiver output enable end and driver output enable end of differential balance type transponder chip U3 controls mould with communication isolating
The network label DR of block is connected, and the power end of differential balance type transponder chip U3 is connected with RS485 communication power supply anode, difference
The ground terminal of balanced type transponder chip U3 is connected with RS485 communication power supply, the reception of differential balance type transponder chip U3
Diode D1 and resistance R20, differential balance type transceiver are successively parallel between device input and driver output end and ground terminal
Between the power end of chip U3 and the receiver anti-phase input and driver reversed-phase output of differential balance type transponder chip U3
The receipts device input of parallel resistance R21, differential balance type transponder chip U3 and driver output end and differential balance type transceiver
Parallel resistance R19 between the receiver anti-phase input and driver reversed-phase output of chip U3, differential balance type transponder chip
Between the receiver anti-phase input and driver reversed-phase output of U3 and the ground terminal of differential balance type transponder chip U3 also simultaneously
It is associated with diode D1,1 foot for receiving device input and driver output end and connecting terminal J1 of differential balance type transponder chip U3
It is connected, the receiver anti-phase input and driver reversed-phase output of differential balance type transponder chip U3 and the 2 of connecting terminal J1
Foot is connected.
When needing to carry out serial data communication, single-chip microcontroller U2 shown in Fig. 3 sends low level signal to pin 1, at this time
Network label DDR shown in Fig. 4 is low level, and triode Q3 is not turned on, and network label DR is high level, at this time differential balance type
Transponder chip U3 is in data and sends state.Sample above-mentioned control design case, circuit communication high reliablity, data transmission response and
Transmitting-receiving conversion is timely.
As shown in fig. 6, the master control power supply module includes zener diode W2, capacitor C3-C6, inductance L1 and voltage-stablizer
The negative pole end of V1, zener diode W2 are connected with 5V positive pole, and the positive terminal of zener diode W2 is connected with 5V power ground, 5V
Shunt capacitance C3 is gone back between positive pole and 5V power ground, the input terminal pin of voltage-stablizer V1 is connected with 5V positive pole, pressure stabilizing
The ground terminal pin of device V1 is connected with 5V power ground, and the output pin of voltage-stablizer V1 passes through inductance L1 and 3.3V positive pole phase
Even, capacitor C5 and C6 are successively parallel between 3.3V positive pole and 5V positive pole, the output pin of voltage-stablizer V1 also with
Capacitor C4 is parallel between 5V power ground, inductance L1 is arranged between C4 and C5, the model AMS1117-3.3 of voltage-stablizer V1,
The model ZMM5V6 of zener diode W2.Such Selection and Design, circuit cost is low, and ensure that 3.3V DC-voltage supply and
The accuracy of serial modulus conversion chip U1 reference voltage input, to guarantee the precision of current detecting, circuit structure design is steady
It is qualitative strong, high by property.
Claims (6)
1. a kind of micro-grid energy storage system current detection means, including current divider, which is characterized in that further include and the shunting
The connected current acquisition analog-to-digital conversion module of device, current acquisition analog-to-digital conversion module are connected with current acquisition control module, electric current
Acquisition control is connected by communication isolating control module with data communication conversion module, and master control power supply module is current acquisition modulus
Conversion module and the power supply of current acquisition control module.
2. micro-grid energy storage system current detection means according to claim 1, which is characterized in that the current acquisition
Control module, which is connected, uses single-chip microcontroller.
3. micro-grid energy storage system current detection means according to claim 1 or 2, which is characterized in that the electric current
Acquiring analog-to-digital conversion module includes serial modulus conversion chip U1, zener diode W1, triode Q1-Q2, current divider interface
1 foot of FLQ1 is connected with the difference analogue of serial modulus conversion chip U1 input positive terminal pin, serial modulus conversion chip U1
Difference analogue input negative pole end pin be connected respectively with the positive terminal of zener diode W1 and 5V power ground, serial analog-to-digital conversion
The reference voltage input terminal pin of chip U1 is connected with 3.3V positive pole, the negative power end pin of serial modulus conversion chip U1
Connect 5V power ground, an end I/O of the serial data output terminal connection current acquisition control module of serial modulus conversion chip U1
Mouthful, the positive power source terminal pin of serial modulus conversion chip U1 connects 5V positive pole, and 5V positive pole passes through three pole of resistance R1 connection
The collector of pipe Q1, the base stage of triode Q1 pass through a port I/O of resistance R3 connection current acquisition control module, triode
Network label CS1 between the collector of Q1 and resistance R1 is connected with the chip select terminal pin of serial modulus conversion chip U1, three poles
The emitter of pipe Q1 connects 5V power ground, and the collector of triode Q2 passes through resistance R2 connection 5V positive pole, triode Q2's
Base stage passes through a port I/O of resistance R4 connection current acquisition control module, and the emitter of triode Q2 connects 5V power ground,
The serial clock of network label CLK1 and serial modulus conversion chip U1 between the collector and resistance R2 of triode Q2 input
It holds pin to be connected, is parallel with resistance R5 between the base stage and emitter of triode Q2.
4. micro-grid energy storage system current detection means according to claim 1 or 2, which is characterized in that the communication
Isolation control module includes that triode Q3-Q7 and photoelectrical coupler P1,5V positive pole pass through resistance R11 connection photoelectrical coupler
1 foot of P1 emission side, RS485 communication power supply anode pass through 16 feet of resistance R13 connection photoelectrical coupler P1 sensitive side, photoelectricity coupling
2 feet of clutch P1 emission side are connected with the collector of triode Q4, and the base stage of triode Q4 passes through resistance R8 and current acquisition control
The molding end block TX is connected, and the emitter of triode Q4 is connected with 5V positive pole, and RS485 communication power supply anode passes through resistance R14
It is connected with the collector of triode Q6, network label TXX is arranged between resistance R14 and the collector of triode Q6, triode
The base stage of Q6 is connected with 16 feet of photoelectrical coupler P1 sensitive side, and the emitter of triode Q6 and 15 feet of photoelectrical coupler P1 are equal
It is connected with RS485 communication power supply, 5V positive pole passes through 5 feet of resistance R10 connection photoelectrical coupler P1 emission side, photoelectricity coupling
6 feet of clutch P1 are connected with the collector of triode Q3, and the base stage of triode Q3 passes through resistance R18 and current control module phase
Even, the emitter of triode Q3 is connected with 5V power ground, and 12 feet of photoelectrical coupler P1 sensitive side pass through resistance R15 and RS485
Communication power supply anode is connected, 11 feet and RS485 communication power supply of photoelectrical coupler P1 sensitive side, network label DR is arranged in electricity
It hinders between R15 and 12 feet of photoelectrical coupler P1 sensitive side, RS485 communication power supply anode passes through resistance R9 connection photoelectrical coupler
8 feet of 7 feet of P1 emission side, photoelectrical coupler P1 emission side are connected with the collector of triode Q7, and the base stage of triode Q7 is logical
It crosses resistance R12 to be connected with network label RXX, the emitter of triode Q7 is connected with RS485 communication power supply, and 5V positive pole is logical
It crosses resistance R16 to be connected with 10 feet of photoelectrical coupler P1 sensitive side, 9 feet and the 5V power ground phase of photoelectrical coupler P1 sensitive side
Even, 5V positive pole is connected by resistance R17 with the collector of triode Q5, and network label RX is arranged in resistance R17 and three poles
Between the collector of pipe Q5, the base stage of triode Q5 is connected with 10 feet of photoelectrical coupler P1 sensitive side, the transmitting of triode Q5
Pole is connected with 5V power ground, and network label RX is connected with current control module, and network label TXX, RXX, DR are and data communication
Conversion module.
5. micro-grid energy storage system current detection means according to claim 4, which is characterized in that the data communication
Conversion module includes diode D1, connecting terminal J1 and differential balance type transponder chip U3, differential balance type transponder chip
The receiver output end of U3 is connected with the network label RXX of communication isolating control module, differential balance type transponder chip U3's
Driver input end is connected with the network label TXX of communication isolating control module, the reception of differential balance type transponder chip U3
Device output enable end and driver output enable end are connected with the network label DR of communication isolating control module, differential balance type
The power end of transponder chip U3 is connected with RS485 communication power supply anode, the ground terminal of differential balance type transponder chip U3 with
RS485 communication power supply it is connected, the input of the receiver of differential balance type transponder chip U3 and driver output end and ground terminal
Between be successively parallel with diode D1 and resistance R20, the power end and differential balance type of differential balance type transponder chip U3 is received
Send out parallel resistance R21 between the receiver anti-phase input and driver reversed-phase output of device chip U3, differential balance type transceiver
Chip U3's receives device input and the receiver anti-phase input and driving of driver output end and differential balance type transponder chip U3
The receiver anti-phase input and driver of parallel resistance R19 between device reversed-phase output, differential balance type transponder chip U3 are anti-
Also diode D1, differential balance type transceiver are parallel between phase output terminal and the ground terminal of differential balance type transponder chip U3
The receipts device of chip U3 inputs and driver output end is connected with 1 foot of connecting terminal J1, differential balance type transponder chip U3's
Receiver anti-phase input and driver reversed-phase output are connected with 2 feet of connecting terminal J1.
6. micro-grid energy storage system current detection means according to claim 1, which is characterized in that the master control power supply
Module includes zener diode W2, capacitor C3-C6, inductance L1 and voltage-stablizer V1, the negative pole end and 5V power supply of zener diode W2
Anode is connected, and the positive terminal of zener diode W2 is connected with 5V power ground, electricity also in parallel between 5V positive pole and 5V power ground
Holding C3, the input terminal pin of voltage-stablizer V1 is connected with 5V positive pole, and the ground terminal pin of voltage-stablizer V1 is connected with 5V power ground,
The output pin of voltage-stablizer V1 is connected by inductance L1 with 3.3V positive pole, between 3.3V positive pole and 5V positive pole
It is successively parallel with capacitor C5 and C6, the output pin of voltage-stablizer V1 is also parallel with capacitor C4, inductance L1 between 5V power ground
It is arranged between C4 and C5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821472557.5U CN208736930U (en) | 2018-09-07 | 2018-09-07 | Micro-grid energy storage system current detection means |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110579634A (en) * | 2019-10-29 | 2019-12-17 | 南京迪港科技有限责任公司 | Intelligent acquisition device for machine room |
| CN114237108A (en) * | 2021-12-10 | 2022-03-25 | 深圳市盈通电力建设有限公司 | Control system of power distribution terminal energy storage system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110579634A (en) * | 2019-10-29 | 2019-12-17 | 南京迪港科技有限责任公司 | Intelligent acquisition device for machine room |
| CN114237108A (en) * | 2021-12-10 | 2022-03-25 | 深圳市盈通电力建设有限公司 | Control system of power distribution terminal energy storage system |
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