CN109302294A - A kind of direct current rush-harvesting and rush-planting charging pile isolation communication protection circuit - Google Patents
A kind of direct current rush-harvesting and rush-planting charging pile isolation communication protection circuit Download PDFInfo
- Publication number
- CN109302294A CN109302294A CN201811387307.6A CN201811387307A CN109302294A CN 109302294 A CN109302294 A CN 109302294A CN 201811387307 A CN201811387307 A CN 201811387307A CN 109302294 A CN109302294 A CN 109302294A
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- China
- Prior art keywords
- rush
- protection circuit
- chip
- communication
- harvesting
- Prior art date
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- Pending
Links
- 238000002955 isolation Methods 0.000 title claims abstract description 23
- 238000003306 harvesting Methods 0.000 title claims abstract description 20
- 230000001052 transient effect Effects 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 abstract description 3
- 238000011105 stabilization Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/10—Current supply arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention provides a kind of direct current rush-harvesting and rush-planting charging pile isolation communication protection circuit, including DC/DC isolated from power protection circuit and communication isolating protect circuit；The DC/DC isolated from power protection circuit powers to telecommunication circuit；The communication isolating protection circuit is isolated the input/output signal of interface using the two-channel digital isolator chip U2 of model ADUM3201；The V of chip U2IAAnd VOBRX the and TX pin of connection interface respectively, the V of chip U2OAAnd VIBIt is respectively turned on RX the and TX pin of letter terminal.The present invention is born based on the stabilization protected and communicated to electric car rush-harvesting and rush-planting DC charging, can not only be made high and low voltage isolation that communication can also be made more stable, so that equipment has high security, and is adapted to new national standard.
Description
Technical field
The present invention relates to a kind of direct current rush-harvesting and rush-planting charging piles, and communication protection circuit is isolated.
Background technique
Increasingly depleted with world petroleum resource, the power source of automobile will have to the constraint for gradually getting rid of petroleum resources
And some new energy are used, this pushes directly on an important technical revolution of automobile industry, Future New Energy Source automobile substitution
Orthodox car trend will become inevitable.
Charging core of the automobile charging pile as New-energy electric vehicle, will also grow rapidly, and will expedite the emergence of out Pang therewith
Big industrial economy effect, the huge market space are generally had an optimistic view of in the industry.
Direct-current charging post, since power is big, will can cause many safety issues to automobile charging process.How to subtract
The security risk of small charging is the thing that producer pays high attention to.The end of the year in 2015 has issued new national standard, and new standard is to charging interface
The specification of comprehensive system has been carried out with communication protocol, it is ensured that electric car and charging equipment interconnect.This is conducive to
The general generality of entire electric car charging network.
For electric car rush-harvesting and rush-planting DC charging, since the power of direct-current charging post is big, the big institute of the voltage and current of output
To have a very high voltage in progress voltage, electric current and Insulation monitoring process.
Summary of the invention
The stabilization protected and communicated for current electric car rush-harvesting and rush-planting DC charging, the present invention provide a kind of direct current rush-harvesting and rush-planting and fill
Electric stake isolation communication protection circuit.
The present invention realizes that its technical purpose technical solution is: a kind of direct current rush-harvesting and rush-planting charging pile isolation communication protection circuit, packet
Include DC/DC isolated from power protection circuit and communication isolating protection circuit；The DC/DC isolated from power protection circuit is to communication electricity
Road power supply；The communication isolating protection circuit is using the two-channel digital isolator chip U2 of model ADUM3201 to interface
Input/output signal be isolated；The V of chip U2IAAnd VOBRX the and TX pin of connection interface respectively, the V of chip U2OAAnd VIBPoint
RX the and TX pin of communication terminal is not connect.
The present invention is born based on the stabilization protected and communicated to electric car rush-harvesting and rush-planting DC charging, and height can not only be made
Low pressure isolation can also make communication more stable, so that equipment has high security, and be adapted to new national standard.
Further, in above-mentioned direct current rush-harvesting and rush-planting charging pile isolation communication protection circuit: the communication interface is RS485
Interface uses model LBC184's to inhibit the difference transponder chip U3 of function to drive as RS485 interface with transient voltage
Dynamic chip.
Further, in above-mentioned direct current rush-harvesting and rush-planting charging pile isolation communication protection circuit: the DC/DC isolated from power is protected
What is protected in protection circuit is DC/DC Switching Power Supply, using the high-performance fixed frequency current mode controller of model UC3843
Chip U1, the 6th foot of chip U1 the output connect the grid of switching tube Q1 in DC/DC Switching Power Supply.
Below with reference to drawings and examples, the present invention is described in detail.
Detailed description of the invention
1 direct current rush-harvesting and rush-planting charging pile of Fig. 1 embodiment of the present invention isolation communication protection schematic block circuit diagram.
1 direct current rush-harvesting and rush-planting charging pile of Fig. 2 embodiment of the present invention isolation communication protection circuit DC/DC isolated from power protection circuit is former
Reason figure.
1 direct current rush-harvesting and rush-planting charging pile of Fig. 3 embodiment of the present invention isolation communication protection circuit communication isolation circuit schematic diagram.
1 direct current rush-harvesting and rush-planting charging pile of Fig. 4 embodiment of the present invention isolation communication protection circuit communication interface circuit schematic diagram.
Specific embodiment
Embodiment 1, the present embodiment circuit diagram is as shown in Figure 1, communication is isolated in the direct current rush-harvesting and rush-planting charging pile of the present embodiment
Circuit is protected, it includes DC/DC isolated from power and 485 two parts of communication isolation.Wherein, DC/DC isolated from power protects circuit
It powers to telecommunication circuit；Communication isolating protects circuit to dock using the two-channel digital isolator chip U2 of model ADUM3201
The input/output signal of mouth is isolated；The V of chip U2IAAnd VOBRX the and TX pin of connection interface respectively, the V of chip U2OAAnd VIB
It is respectively turned on RX the and TX pin of letter terminal.As shown in Figure 3.It is realized using the isolation communication effect of ADuM3201 isolating chip logical
The isolation of news.
In the present embodiment, communication interface is RS485 interface as shown in figure 4, having transient electrical using model LBC184
The difference transponder chip U3 of function processed is constrained as RS485 interface driver chip.
What is protected in DC/DC isolated from power protection circuit is DC/DC Switching Power Supply, this is a kind of common DC/DC circuit,
Current switching in coil is realized using switching tube Q1 as shown in Fig. 2, solid using the high-performance of model UC3843 in the present embodiment
Determine frequency current mode controller chip U1, the 6th foot output of chip U1 connects the grid of switching tube Q1 in DC/DC Switching Power Supply.
The 6th foot output of chip U1 directly drives power MOSEFT(switching tube) grid, the up to peak point current of 1A draws through this pin
And filling.
In the present embodiment, by the isolation of UC3843 power supply chip DCDC, the isolation of 12V voltage be converted to the voltage of 5V to
LBC184 chip and ADuM3201 isolating chip provide power supply.Using UC3843 power supply chip DCDC isolation realize power supply every
From so that the insulation blocking entirely communicated is realized, so that communication is more safe and stablizes.
Claims (3)
1. a kind of direct current rush-harvesting and rush-planting charging pile isolation communication protection circuit, including DC/DC isolated from power protection circuit and communication isolating
Protect circuit；The DC/DC isolated from power protection circuit powers to telecommunication circuit；It is characterized by: the communication isolating
Protect circuit using model ADUM3201 two-channel digital isolator chip U2 to the input/output signal of interface carry out every
From；RX the and TX pin of VIA and VOB the difference connection interface of chip U2, the VOA and VIB of chip U2 are respectively turned on the RX of letter terminal
With TX pin.
2. direct current rush-harvesting and rush-planting charging pile isolation communication protection circuit according to claim 1, it is characterised in that: the communication
Interface be RS485 interface, use model LBC184 with transient voltage inhibit function difference transponder chip U3 as
RS485 interface driver chip.
3. direct current rush-harvesting and rush-planting charging pile isolation communication protection circuit according to claim 1 or 2, it is characterised in that: described
What is protected in DC/DC isolated from power protection circuit is DC/DC Switching Power Supply, using the high-performance fixed frequency of model UC3843
Current mode controller chip U1, the 6th foot of chip U1 the output connect the grid of switching tube Q1 in DC/DC Switching Power Supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811387307.6A CN109302294A (en) | 2018-11-21 | 2018-11-21 | A kind of direct current rush-harvesting and rush-planting charging pile isolation communication protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811387307.6A CN109302294A (en) | 2018-11-21 | 2018-11-21 | A kind of direct current rush-harvesting and rush-planting charging pile isolation communication protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109302294A true CN109302294A (en) | 2019-02-01 |
Family
ID=65144736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811387307.6A Pending CN109302294A (en) | 2018-11-21 | 2018-11-21 | A kind of direct current rush-harvesting and rush-planting charging pile isolation communication protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109302294A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090251106A1 (en) * | 2008-04-02 | 2009-10-08 | American Power Conversion Corporation | Non-isolated charger with bi-polar inputs |
| WO2014114515A2 (en) * | 2013-01-22 | 2014-07-31 | Siemens Aktiengesellschaft | Charging station for charging a number n of electric vehicles and charging station |
| CN206653937U (en) * | 2017-03-24 | 2017-11-21 | 刘博� | A kind of DC charging terminal |
| CN207703965U (en) * | 2017-12-22 | 2018-08-07 | 哈尔滨九洲电气股份有限公司 | A kind of direct-current charging post charging gun connecting detection unit |
| CN108695962A (en) * | 2018-06-21 | 2018-10-23 | 河南森源电气股份有限公司 | A kind of DC charging system based on new-energy automobile |
-
2018
- 2018-11-21 CN CN201811387307.6A patent/CN109302294A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090251106A1 (en) * | 2008-04-02 | 2009-10-08 | American Power Conversion Corporation | Non-isolated charger with bi-polar inputs |
| WO2014114515A2 (en) * | 2013-01-22 | 2014-07-31 | Siemens Aktiengesellschaft | Charging station for charging a number n of electric vehicles and charging station |
| CN206653937U (en) * | 2017-03-24 | 2017-11-21 | 刘博� | A kind of DC charging terminal |
| CN207703965U (en) * | 2017-12-22 | 2018-08-07 | 哈尔滨九洲电气股份有限公司 | A kind of direct-current charging post charging gun connecting detection unit |
| CN108695962A (en) * | 2018-06-21 | 2018-10-23 | 河南森源电气股份有限公司 | A kind of DC charging system based on new-energy automobile |
Non-Patent Citations (1)
| Title |
|---|
| 代刚 等: "嵌入式Linux 下的多通道CAN 通信平台", 《计算机工程》, vol. 35, no. 13, pages 1 - 4 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190201 |
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| WD01 | Invention patent application deemed withdrawn after publication |