CN217307321U - Bidirectional charging pile output circuit - Google Patents
Bidirectional charging pile output circuit Download PDFInfo
- Publication number
- CN217307321U CN217307321U CN202221112456.3U CN202221112456U CN217307321U CN 217307321 U CN217307321 U CN 217307321U CN 202221112456 U CN202221112456 U CN 202221112456U CN 217307321 U CN217307321 U CN 217307321U
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- output
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- bidirectional
- relay
- direct current
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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
- Y02T90/12—Electric charging stations
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses an output circuit of a bidirectional charging pile, the charging pile comprises a main circuit and a control circuit, the main circuit comprises a bidirectional AC/DC conversion module, an output relay, a discharging resistor and a DC output terminal, the output relay is a double-contact magnetic latching relay, and the input end of a coil of the double-contact magnetic latching relay is connected with the control circuit; the input end of the double-contact magnetic latching relay is connected with the positive pole of the positive output end of the bidirectional AC/DC conversion module, the first output end is connected with the positive pole of the direct current output terminal, the second output end is connected with the negative pole of the direct current output terminal through the discharge resistor, and the negative pole of the direct current output terminal is connected with the negative pole of the positive output end of the bidirectional AC/DC conversion module. The utility model discloses the utilization utilizes two contact magnetic latching relay to control the output that fills electric pile and discharges, does not need independent discharge circuit, and two-way output circuit that fills electric pile simple structure is with low costs.
Description
Technical Field
The utility model relates to a two-way electric pile that fills especially relates to a two-way output circuit who fills electric pile.
Background
High-power exchange to direct current, direct current to the two-way electric pile that fills of exchanging, in order to satisfy small, the power is big, safe and reliable's demand, need use output voltage bleeder circuit, according to GBT18487.1-2015 "electric automobile conduction charging system part 1: the general requirements indicate that the charging machine should discharge the charging output voltage in time after being shut down, and the output voltage needs to be discharged below the safe voltage 60Vdc within 1 second. In a traditional bidirectional AC/DC conversion module of a charging pile, an independent output voltage relief circuit is connected in front of an output relay, an MOS (metal oxide semiconductor) switching tube is connected with a plurality of metal oxide film resistors in series to be connected with the negative electrode of an output end, and the relief of the output voltage is controlled by controlling the switch MOSFET tube through a DSP (digital signal processor). But in the application occasion and the cost consideration of the high-power bidirectional charging pile, the product cost can be increased by adopting the independent output voltage bleeder circuit.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a two-way output circuit who fills electric pile that simple structure, cost are lower.
In order to solve the technical problem, the utility model adopts the technical scheme that the output circuit of the bidirectional charging pile comprises a main circuit and a control circuit, wherein the main circuit comprises a bidirectional AC/DC conversion module, an output relay, a discharge resistor and a DC output terminal, the output relay is a double-contact magnetic latching relay, and the input end of a coil of the double-contact magnetic latching relay is connected with the control circuit; the input end of the double-contact magnetic latching relay is connected with the positive pole of the positive output end of the bidirectional AC/DC conversion module, the first output end is connected with the positive pole of the direct current output terminal, the second output end is connected with the negative pole of the direct current output terminal through the discharge resistor, and the negative pole of the direct current output terminal is connected with the negative pole of the positive output end of the bidirectional AC/DC conversion module.
In the output circuit, the discharge resistor includes a plurality of metal oxide film resistors connected in series.
The control circuit of the output circuit comprises a controller and a relay driving circuit, the control end of the relay driving circuit is connected with the controller, two input ends of a relay coil are respectively connected with two output ends of the relay driving circuit, and the common end of the relay coil is connected with the negative electrode of a direct current output terminal.
The utility model discloses utilize two contact magnetic latching relay to control the output that fills electric pile and discharge, do not need independent discharge circuit, two-way output circuit simple structure who fills electric pile, it is with low costs.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a circuit diagram of an output circuit of the bidirectional charging pile of the embodiment of the utility model.
Detailed Description
The embodiment of the utility model provides a two-way output circuit who fills electric pile's structure is shown in fig. 1, including two contact magnetic latching relay K and discharge resistance, discharge resistance includes the metal oxide film resistance R1, R2 and R3 of three series connection.
The charging pile comprises a main circuit and a control circuit, wherein the main circuit comprises a bidirectional AC/DC conversion module and a direct current output terminal, and the control circuit comprises a DSP controller and a relay driving circuit (not shown in the figure).
The control end of the relay drive circuit is connected with the DSP controller, two input ends (4 pins and 6 pins) of a double-contact magnetic latching relay K coil are respectively connected with two output ends K1 and K2 of the relay drive circuit, and a common end (5 pins) of the double-contact magnetic latching relay K coil and a negative electrode of a positive output end of the bidirectional AC/DC conversion module are connected with a negative electrode Vo-of the direct current output terminal.
The input end (2 feet) of the double-contact magnetic latching relay K is connected with the positive pole V + of the positive output end of the bidirectional AC/DC conversion module, the first output end (1 foot) of the double-contact magnetic latching relay K is connected with the positive pole Vo + of the direct current output terminal, and the second output end (3 feet) of the double-contact magnetic latching relay K is connected with the negative pole Vo-of the direct current output terminal through the discharging resistor.
When the bidirectional charging pile works in the forward direction, the DSP controls the driving circuit to output a K1 signal to communicate the pins 2 and 1 of the double-contact magnetic latching relay, and at the moment, the bidirectional AC/DC conversion module of the charging pile outputs direct-current voltage in the forward direction. When the charging pile bidirectional AC/DC conversion module is shut down, the DSP controls the driving circuit to output a K2 signal to communicate the 2 pins and the 3 pins of the double-contact magnetic latching relay, and when shutdown is achieved, residual voltage of a positive terminal V + of the positive output end of the charging pile bidirectional AC/DC conversion module is rapidly released to be within safe voltage through the metal oxide film resistors connected in series. When the bidirectional charging pile works reversely, after a DC auxiliary source of the bidirectional charging pile takes electricity from a battery end to work, the DSP controls the driving circuit to output a K1 signal to communicate the pin 2 and the pin 1 of the double-contact magnetic latching relay, and at the moment, the bidirectional AC/DC conversion module of the charging pile reversely works to reversely output alternating current voltage; when the charging pile bidirectional AC/DC conversion module is shut down, the DSP controls the driving circuit to output a K2 signal to communicate the 2 pins and the 3 pins of the double-contact magnetic latching relay, and the residual voltage of the positive terminal V + of the positive output end of the charging pile bidirectional AC/DC conversion module is rapidly released to within the safe voltage through the metal oxide film resistors connected in series.
The utility model discloses two-way output circuit who fills electric pile utilizes double contact magnetic latching relay to control the output that fills electric pile and discharge, does not need independent discharge circuit, and output circuit simple structure, the cost is lower.
Claims (3)
1. The output circuit of the bidirectional charging pile comprises a main circuit and a control circuit, wherein the main circuit comprises a bidirectional AC/DC conversion module, an output relay, a discharge resistor and a direct current output terminal; the input end of the double-contact magnetic latching relay is connected with the positive pole of the positive output end of the bidirectional AC/DC conversion module, the first output end of the double-contact magnetic latching relay is connected with the positive pole of the direct current output terminal, the second output end of the double-contact magnetic latching relay is connected with the negative pole of the direct current output terminal through the discharge resistor, and the negative pole of the direct current output terminal is connected with the negative pole of the positive output end of the bidirectional AC/DC conversion module.
2. The output circuit of claim 1, wherein the discharge resistor comprises a plurality of metal oxide film resistors connected in series.
3. The output circuit of claim 1, wherein the control circuit comprises a controller and a relay driving circuit, the control end of the relay driving circuit is connected with the controller, two input ends of the relay coil are respectively connected with two output ends of the relay driving circuit, and a common end of the relay coil is connected with the negative electrode of the direct current output terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221112456.3U CN217307321U (en) | 2022-05-11 | 2022-05-11 | Bidirectional charging pile output circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221112456.3U CN217307321U (en) | 2022-05-11 | 2022-05-11 | Bidirectional charging pile output circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217307321U true CN217307321U (en) | 2022-08-26 |
Family
ID=82917613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221112456.3U Active CN217307321U (en) | 2022-05-11 | 2022-05-11 | Bidirectional charging pile output circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217307321U (en) |
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2022
- 2022-05-11 CN CN202221112456.3U patent/CN217307321U/en active Active
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