CN209250659U - 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
- CN209250659U CN209250659U CN201821915177.4U CN201821915177U CN209250659U CN 209250659 U CN209250659 U CN 209250659U CN 201821915177 U CN201821915177 U CN 201821915177U CN 209250659 U CN209250659 U CN 209250659U
- Authority
- CN
- China
- Prior art keywords
- rush
- protection circuit
- chip
- harvesting
- communication
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model 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 utility model 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 utility model 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, it is double that the utility model provides a kind of direct current
Rifle charging pile isolation communication protection circuit.
The utility model realizes that its technical purpose technical solution is: a kind of direct current rush-harvesting and rush-planting charging pile isolation communication protection electricity
Road, including DC/DC isolated from power protection circuit and communication isolating protect circuit；The DC/DC isolated from power protects circuit pair
Telecommunication circuit power supply；The communication isolating protection circuit uses the two-channel digital isolator chip U2 of model ADUM3201
The input/output signal of interface is isolated；The V of chip U2IAAnd VOBRX the and TX pin of connection interface respectively, the V of chip U2OA
And VIBIt is respectively turned on RX the and TX pin of letter terminal.
The utility model is born based on the stabilization protected and communicated to electric car rush-harvesting and rush-planting DC charging, can not only be made
Obtaining high and low voltage 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: communication interface is RS485 interface,
Use model LBC184's to inhibit the difference transponder chip U3 of function as RS485 interface driver core with transient voltage
Piece.
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 utility model is described in detail.
Detailed description of the invention
1 direct current rush-harvesting and rush-planting charging pile of Fig. 1 the utility model embodiment isolation communication protection schematic block circuit diagram.
1 direct current rush-harvesting and rush-planting charging pile of Fig. 2 the utility model embodiment isolation communication protection circuit DC/DC isolated from power protection electricity
Road schematic diagram.
1 direct current rush-harvesting and rush-planting charging pile of Fig. 3 the utility model embodiment isolation communication protection circuit communication isolation circuit schematic diagram.
1 direct current rush-harvesting and rush-planting charging pile of Fig. 4 the utility model embodiment 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 according to claim 1 isolation communication protection circuit, it is characterised in that: communication interface is
RS485 interface uses model LBC184's to inhibit the difference transponder chip U3 of function to connect as RS485 with transient voltage
Mouth driving 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 |
|---|---|---|---|
| CN201821915177.4U CN209250659U (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 |
|---|---|---|---|
| CN201821915177.4U CN209250659U (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 |
|---|---|
| CN209250659U true CN209250659U (en) | 2019-08-13 |
Family
ID=67530090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821915177.4U Active CN209250659U (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) | CN209250659U (en) |
-
2018
- 2018-11-21 CN CN201821915177.4U patent/CN209250659U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105162186A (en) | Intelligent charging system for electric vehicle and charging method | |
| CN204967321U (en) | Electric motor car intelligent charging system | |
| CN205178858U (en) | Optical coupling isolation output module | |
| CN202721450U (en) | Fully controllable energy feedback device | |
| CN209250659U (en) | A kind of direct current rush-harvesting and rush-planting charging pile isolation communication protection circuit | |
| CN206712482U (en) | USB charging sockets | |
| CN208369280U (en) | A kind of lithium battery protection circuit | |
| CN109302294A (en) | A kind of direct current rush-harvesting and rush-planting charging pile isolation communication protection circuit | |
| CN202474856U (en) | Photovoltaic inverter system with direct-current false connection prevention function | |
| CN203607903U (en) | Non-low-voltage connection cell management system | |
| CN203813535U (en) | Power supply device used for electricity larceny prevention inspection device | |
| CN209119872U (en) | A kind of new-energy automobile vehicle-mounted charging power having three-stage overload protection function | |
| CN204425006U (en) | Intelligent mobile charging system charging switching device | |
| CN208890442U (en) | A kind of direct current rush-harvesting and rush-planting charging pile rush-harvesting and rush-planting charging output self-locking protective circuit | |
| CN203205650U (en) | Intelligent safety socket | |
| CN103795400B (en) | High-precision sampling circuit based on VICOR module | |
| CN204669014U (en) | A kind of car emergency with many gears charge function starts power supply | |
| CN206313745U (en) | Charging electric vehicle rifle electromagnetism lock control circuit | |
| CN205283601U (en) | Take intrusion detection's network security isolated system | |
| CN104836301B (en) | A kind of new forms of energy car | |
| CN203522330U (en) | Communication circuit between internal systems of mobile energy-storage power station | |
| CN203312871U (en) | Multifunctional mobile business terminal partner voltage conversion circuit and switching circuit | |
| CN203368145U (en) | 10KV box-type transformer station with intelligent monitoring function | |
| CN209375213U (en) | Direct-current charging post system | |
| CN203660666U (en) | A special transformer terminal used for a line loss monitoring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |