CN217496050U - Electric vehicle controller and instrument communication circuit - Google Patents
Electric vehicle controller and instrument communication circuit Download PDFInfo
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- CN217496050U CN217496050U CN202221710759.5U CN202221710759U CN217496050U CN 217496050 U CN217496050 U CN 217496050U CN 202221710759 U CN202221710759 U CN 202221710759U CN 217496050 U CN217496050 U CN 217496050U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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Abstract
The utility model relates to a communication circuit, electric vehicle controller and instrument communication circuit specifically says so. The communication device comprises a first communication module and a second communication module, wherein a signal input end of the first communication module is connected with a controller, and a signal output end of the first communication module is connected with an instrument and used for sending signals to the instrument from the controller. And the signal input end of the second communication module is connected with the instrument, and the signal output end of the second communication module is connected with the controller and used for sending signals from the instrument to the controller. The signal output end of the first communication module and the signal input end of the second communication module are respectively in adaptive connection with two cathode pins of the electrostatic protection component ZD1, and the double-cathode pin of the electrostatic protection component ZD1 is grounded. The circuit has electrostatic protection, the condition that the normal operation of the electric vehicle is influenced due to communication failure can not occur, and electric elements can not be damaged.
Description
Technical Field
The utility model relates to a communication circuit, electric vehicle controller and instrument communication circuit with electrostatic protection function specifically says so.
Background
At present, a conventional electric vehicle controller and instrument communication circuit comprises a first communication module and a second communication module, wherein a signal input end of the first communication module is connected with a controller, and a signal output end of the first communication module is connected with an instrument and used for sending signals to the instrument from the controller. And the signal input end of the second communication module is connected with the instrument, and the signal output end of the second communication module is connected with the controller and used for sending signals from the instrument to the controller. The communication circuit has no electrostatic protection, and communication failure can occur due to electrostatic field and electrostatic discharge when the communication circuit is used, so that the normal operation of the electric vehicle is influenced, and even the electric elements are damaged seriously.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide an electric vehicle controller and instrument communication circuit, this circuit has electrostatic protection, can not appear the communication inefficacy and influence the condition of the normal operating of electric motor car, and electrical component can not damage yet. The technical problems that in the prior art, communication is invalid, an electric vehicle cannot normally run, and electric elements are damaged are solved.
In order to solve the problems, the following technical scheme is provided:
the utility model discloses an electric vehicle controller and instrument communication circuit include first communication module and second communication module, and the signal input part of first communication module links to each other with the controller, and signal output part links to each other with the instrument for send a signal from the controller to the instrument. And the signal input end of the second communication module is connected with the instrument, and the signal output end of the second communication module is connected with the controller and used for sending signals from the instrument to the controller. The signal output end of the first communication module and the signal input end of the second communication module are respectively in adaptive connection with two cathode pins of the electrostatic protection component ZD1, and the double-cathode pin of the electrostatic protection component ZD1 is grounded.
The first communication module comprises a triode V7 and a triode V5, the base of the triode V7 is connected with one end of a resistor R71, and the other end of the resistor R71 is the signal input end of the first communication module. The emitting electrodes of the triode V7 and the triode V5 are grounded, the collector electrode of the triode V7 is connected with one end of the resistor R69 and the base electrode of the triode V5 respectively, the other end of the resistor R69 is connected with the negative electrode of the diode D3, and the positive electrode of the diode D3 is connected with VCC. The negative electrode of the diode D3 is connected with one end of the resistor R68, the other end of the resistor R68 is connected with one end of the resistor R11 and the collector of the triode V5 respectively, the other end of the resistor R11 is connected with one end of the magnetic bead FB2, and the other end of the magnetic bead FB2 is the signal output end of the first communication module.
And a capacitor C7 is connected in parallel between the collector and the emitter of the triode V5.
One end of the FB2 connected to the resistor R11 is connected to one end of the capacitor C8, and the other end of the capacitor C8 is grounded.
The second communication module comprises a magnetic bead FB1, one end of the magnetic bead FB1 is a signal input end of the second communication module, the other end of the magnetic bead FB1 is connected with a negative electrode of a diode D5, an anode of the diode D5 is connected with one end of a resistor R21 and one end of a resistor R8 respectively, the other end of the resistor R21 is connected with 3.3V voltage, the other end of the resistor R8 is a signal output end of the second communication module, and the end of the resistor R8 is grounded through a capacitor C2.
By adopting the scheme, the method has the following advantages:
because the utility model discloses an electric vehicle controller and instrument communication circuit's the signal output part of first communication module and the signal input part of second communication module respectively with two negative pole pin adaptation connections of electrostatic protection components and parts ZD1, electrostatic protection components and parts ZD 1's double negative pole pin ground connection. The electrostatic protection component is adopted to carry out electrostatic protection on the communication circuit, so that the condition of communication failure caused by electrostatic field and electrostatic discharge is avoided, the electric vehicle can be ensured to run normally all the time, and the electric elements can not be damaged due to electrostatic influence.
Drawings
Fig. 1 is a schematic circuit diagram of the electric vehicle controller and the instrument communication circuit of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the utility model discloses an electric vehicle controller and instrument communication circuit include first communication module, second communication module and electrostatic protection components and parts ZD1, and the signal input part of first communication module links to each other with the controller, and signal output part links to each other with the instrument for send signal from the controller to the instrument. And the signal input end of the second communication module is connected with the instrument, and the signal output end of the second communication module is connected with the controller and used for sending signals from the instrument to the controller. The signal output end of the first communication module and the signal input end of the second communication module are respectively in adaptive connection with two cathode pins of the electrostatic protection component ZD1, and the double-cathode pin of the electrostatic protection component ZD1 is grounded.
The electrostatic protection component can be used for performing electrostatic protection on the communication circuit, so that the condition of communication failure caused by electrostatic field and electrostatic discharge is avoided, the electric vehicle can be ensured to run normally all the time, and the electric elements can not be damaged due to electrostatic influence. Can also be used
The first communication module comprises a triode V7 and a triode V5, the base of the triode V7 is connected with one end of a resistor R71, and the other end of the resistor R71 is the signal input end of the first communication module. The emitting electrodes of the triode V7 and the triode V5 are grounded, the collector electrode of the triode V7 is connected with one end of a resistor R69 and the base electrode of the triode V5 respectively, the other end of the resistor R69 is connected with the negative electrode of a diode D3, and the positive electrode of the diode D3 is connected with VCC. The negative electrode of the diode D3 is connected with one end of the resistor R68, the other end of the resistor R68 is connected with one end of the resistor R11 and the collector of the triode V5 respectively, the other end of the resistor R11 is connected with one end of the magnetic bead FB2, and the other end of the magnetic bead FB2 is the signal output end of the first communication module. And a capacitor C7 is connected in parallel between the collector and the emitter of the triode V5. One end of the FB2 connected to the resistor R11 is connected to one end of the capacitor C8, and the other end of the capacitor C8 is grounded. The second communication module comprises a magnetic bead FB1, one end of the magnetic bead FB1 is a signal input end of the second communication module, the other end of the magnetic bead FB1 is connected with a negative electrode of a diode D5, an anode of the diode D5 is connected with one end of a resistor R21 and one end of a resistor R8 respectively, the other end of the resistor R21 is connected with 3.3V voltage, the other end of the resistor R8 is a signal output end of the second communication module, and the end of the resistor R8 is grounded through a capacitor C2.
The model of the magnetic bead FB1/FB2 is MMZ1608B102 CTA. The model of the electrostatic protection component ZD1 is PESD5V0L2 BT. The type of the diodes D3 and D5 is 1N 4148.
The communication between the controller and the instrument is serial communication, namely, the controller and the instrument continuously transmit and receive high and low levels. The 3.3V voltage and VCC are pull-up power supplies and are used for setting 0 or 1, so that communication of high and low levels is realized, the specific high and low level conversion process can refer to a video tutorial of a Guo Tianxiang-common communication level conversion circuit (5V,3.3V and 1.8V interconversion), and the website is https:// www.bilibili.com/video/av 672220620/.
The electrostatic protection component ESD has the function of protecting the circuit, and can protect the whole circuit system from being damaged by surge, pulse and static electricity, so that loss is reduced. The magnetic bead FB1/FB2 is used for inhibiting a signal wire. The diode D5 is used for preventing current from flowing backwards and protecting an IO port of the single chip microcomputer. The resistor R8/capacitor C2 function to form an RC series circuit current limiting filter. The resistor R21 is used as a pull-up resistor and is resistant to interference. The capacitor C8 is a filter capacitor. The transistor V5 and the transistor V7 are used for realizing high-low level conversion. The diode D3 functions to prevent current from flowing backward. The resistor R68/R69 is used for amplifying signal output. The resistor R71 is used for limiting current and preventing the base current of the triode V7 from being too large to damage the triode.
Claims (5)
1. The electric vehicle controller and instrument communication circuit comprises a first communication module and a second communication module, wherein the signal input end of the first communication module is connected with the controller, and the signal output end of the first communication module is connected with the instrument and used for sending signals to the instrument from the controller; the signal input end of the second communication module is connected with the instrument, and the signal output end of the second communication module is connected with the controller and used for sending signals from the instrument to the controller; the double-cathode type static protection module is characterized by further comprising a static protection component ZD1, a signal output end of the first communication module and a signal input end of the second communication module are respectively in adaptive connection with two cathode pins of the static protection component ZD1, and double cathode pins of the static protection component ZD1 are grounded.
2. The communication circuit of electric vehicle controller and meter as claimed in claim 1, wherein the first communication module comprises a transistor V7 and a transistor V5, the base of the transistor V7 is connected to one end of a resistor R71, and the other end of the resistor R71 is the signal input end of the first communication module; the emitting electrodes of the triode V7 and the triode V5 are grounded, the collector electrode of the triode V7 is connected with one end of a resistor R69 and the base electrode of the triode V5 respectively, the other end of the resistor R69 is connected with the negative electrode of a diode D3, and the positive electrode of the diode D3 is connected with VCC; the negative electrode of the diode D3 is connected with one end of the resistor R68, the other end of the resistor R68 is connected with one end of the resistor R11 and the collector of the triode V5 respectively, the other end of the resistor R11 is connected with one end of the magnetic bead FB2, and the other end of the magnetic bead FB2 is the signal output end of the first communication module.
3. The communication circuit of electric vehicle controller and meter as claimed in claim 2, wherein a capacitor C7 is connected in parallel between the collector and the emitter of said transistor V5.
4. The electric vehicle controller and meter communication circuit as claimed in claim 3, wherein one end of the FB2 connected to the resistor R11 is connected to one end of the capacitor C8, and the other end of the capacitor C8 is grounded.
5. The communication circuit of the electric vehicle controller and the meter according to any one of claims 1 to 4, wherein the second communication module comprises a magnetic bead FB1, one end of the magnetic bead FB1 is a signal input end of the second communication module, the other end of the magnetic bead FB1 is connected to a cathode of a diode D5, an anode of the diode D5 is connected to one end of a resistor R21 and one end of a resistor R8 respectively, the other end of the resistor R21 is connected to a 3.3V voltage, the other end of the resistor R8 is a signal output end of the second communication module, and the end of the resistor R8 is grounded through a capacitor C2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221710759.5U CN217496050U (en) | 2022-07-05 | 2022-07-05 | Electric vehicle controller and instrument communication circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221710759.5U CN217496050U (en) | 2022-07-05 | 2022-07-05 | Electric vehicle controller and instrument communication circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217496050U true CN217496050U (en) | 2022-09-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221710759.5U Active CN217496050U (en) | 2022-07-05 | 2022-07-05 | Electric vehicle controller and instrument communication circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217496050U (en) |
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2022
- 2022-07-05 CN CN202221710759.5U patent/CN217496050U/en active Active
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