CN113625040A - Direct current fills electric pile output short circuit detection module and fills electric pile - Google Patents
Direct current fills electric pile output short circuit detection module and fills electric pile Download PDFInfo
- Publication number
- CN113625040A CN113625040A CN202110866908.0A CN202110866908A CN113625040A CN 113625040 A CN113625040 A CN 113625040A CN 202110866908 A CN202110866908 A CN 202110866908A CN 113625040 A CN113625040 A CN 113625040A
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- module
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- charging pile
- open node
- power supply
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- 238000001514 detection method Methods 0.000 title claims abstract description 30
- 238000002955 isolation Methods 0.000 claims abstract description 22
- 238000005259 measurement Methods 0.000 claims description 17
- 238000009413 insulation Methods 0.000 claims description 4
- 230000000740 bleeding effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention belongs to the technical field of electronic detection, and particularly relates to a direct current charging pile output short circuit detection module and a charging pile. The short circuit detection module comprises a DC/DC isolation power supply module, an anti-reverse unit, a first normally-open node K3-1 and a second normally-open node K3-2 of a relay K3, wherein the positive electrode of the DC/DC isolation power supply module, the anti-reverse unit and the first normally-open node K3-1 are sequentially connected, the other end of the first normally-open node K3-1 serves as the positive output end DC + of the off-board charging pile, the negative electrode of the DC/DC isolation power supply module and the second normally-open node K3-2 are connected, and the other end of the second normally-open node K3-2 serves as the negative output end DC-of the off-board charging pile. This application direct current fills electric pile before charging and carries out short circuit detection, guarantees power consumption safety to this circuit has the function of self-resuming and self-protection.
Description
Technical Field
The invention belongs to the technical field of electronic detection, and particularly relates to a direct current charging pile output short circuit detection module and a charging pile.
Background
At present, the development of new energy industry electric automobile is widely advocated in the country, and as relying on electric energy operation's car, it becomes indispensable important supporting infrastructure equipment to fill electric pile, and wherein direct current fills electric pile and is widely used with its quick charge's characteristics. The direct current fills electric pile and passes through being connected between power output return circuit relay control charging source and the electric automobile battery, when starting to charge electric automobile, needs closed relay. However, in the prior art, before the relay is closed to charge the electric vehicle, whether the output of the charging pile is short-circuited or not is not detected, so that the power utilization risk exists.
Disclosure of Invention
In order to ensure the electricity safety, the invention provides an output short circuit detection module of a direct current charging pile and the charging pile, and the specific scheme is as follows:
the utility model provides a direct current fills electric pile output short circuit detection module, includes DC/DC isolation power module, prevents that unit, relay K3's first normally open node K3-1, second normally open node K3-2 are prevented to the unit, the positive pole of DC/DC isolation power module, prevent that unit, first normally open node K3-1 connect gradually, and the other end of first normally open node K3-1 is connected to non-vehicular charging pile's positive output end DC +, DC/DC isolation power module's negative pole, second normally open node K3-2 are connected, and the other end of second normally open node K3-2 is connected to non-vehicular charging pile's negative output end DC-.
Specifically, the anti-reverse unit includes a FUSE1 and a diode assembly connected in series.
Specifically, the diode assembly comprises a diode D1 and a diode D2 which are arranged in series.
The vehicle-mounted charging pile comprises the circuit detection module, a voltage measurement module, a current measurement module, a discharge module, an AC/DC isolation power supply module, a relay K1 and a relay K2;
the two ends of the voltage measurement module are respectively and correspondingly connected with a positive output end DC + and a negative output end DC-of the non-vehicle charging pile, the positive output end DC +, the relay K1 and the current measurement module of the non-vehicle charging pile are sequentially connected, the other end of the current measurement module is connected with the positive electrode of the AC/DC isolation power supply module, and the negative output end DC-of the non-vehicle charging pile is connected with the negative electrode of the AC/DC isolation power supply module through the relay K2.
Specifically speaking, still include insulating detection module, insulating detection module and bleeder module parallel connection.
The invention has the beneficial effects that: for prior art, this application charges before the direct current fills electric pile and carries out short circuit detection, guarantees power consumption safety to this circuit has self-resuming and self-protection's function.
Drawings
Fig. 1 and 2 are structural diagrams of a charging pile according to the present invention.
Detailed Description
As shown in fig. 1-2, a DC charging pile output short circuit detection module includes a DC/DC isolation power module, a FUSE1, a diode component, a first normally-open node K3-1 and a second normally-open node K3-2 of a relay K3, an anode of the DC/DC isolation power module, a FUSE1, the diode component and the first normally-open node K3-1 are sequentially connected, the other end of the first normally-open node K3-1 is connected to a positive output terminal DC + of an off-board charging pile, a cathode of the DC/DC isolation power module and the second normally-open node K3-2 are connected, and the other end of the second normally-open node K3-2 is connected to a negative output terminal DC-of the off-board charging pile. The positive and negative poles of the off-board charging pile are connected with the corresponding ports of the electric automobile through the corresponding interfaces.
Specifically, for better ensuring the charging safety, the diode assembly comprises a diode D1 and a diode D2 which are arranged in series.
The vehicle-mounted charging pile comprises the direct-current charging pile output short circuit detection module, and further comprises a voltage measurement module, a current measurement module, a discharge module, an AC/DC isolation power supply module, a relay K1, a relay K2 and an insulation detection module.
The two ends of the voltage measurement module are respectively and correspondingly connected with a positive output end DC + and a negative output end DC-of the non-vehicle charging pile, the positive output end DC +, the relay K1 and the current measurement module of the non-vehicle charging pile are sequentially connected, the other end of the current measurement module is connected with the positive electrode of the AC/DC isolation power supply module, and the negative output end DC-of the non-vehicle charging pile is connected with the negative electrode of the AC/DC isolation power supply module through the relay K2. The insulation detection module is connected with the discharge module in parallel.
As shown in fig. 2, the voltage measurement module includes a resistor R1, a resistor R2, and a resistor R3 connected in series, and the voltage measurement module further includes a voltage U1 across the collecting resistor R3.
Before charging is started, the in-pile controller controls the relay K1 and the relay K2 to be in an open state. The relay K3 is controlled, the normally open node K3-1 and the normally open node K3-2 of the relay are closed at the same time, the DC/DC isolation power supply module outputs voltage signals, the controller collects the voltage U1 at two ends of the resistor R3, and whether the voltage U1 is zero or not is judged. If the voltage value U1 is equal to 0, the output side of the charging pile is in short circuit fault, the controller immediately sends out an alarm signal, and charging is not started; if the voltage value U1 ≠ 0, there is no short-circuit fault on the output side. After the detection is finished, the relay K3 is controlled to be disconnected, and the charging pile starts a subsequent normal charging process.
If the output side is short-circuited, the self-recovery fuse automatically disconnects the short-circuit detection circuit, and the short-circuit detection circuit is guaranteed not to be damaged. After the short-circuit fault of the output side disappears, the fuse restores to be normally connected, and the detection circuit restores to be in a normal working state.
If the relay K3 is not disconnected according to the control requirement after the detection is finished, the short circuit detection circuit is equivalently connected with a high-voltage circuit, and the two series diodes prevent the high-voltage reverse breakdown circuit and play a role in protecting the short circuit detection circuit.
In conclusion, before the direct current pile charges the electric automobile, the relay of the power output loop in the pile is not closed. And applying the output voltage of the DC/DC isolation power supply module as a signal source on a charging loop, and measuring the contact voltage of the output side of the relay. The output is normal when the voltage is available, and a subsequent charging process can be normally carried out; if no voltage represents output short circuit fault, charging is not started.
Whether short-circuit fault exists can be checked before charging based on the method and the device, and safe and reliable operation of the direct-current charging pile equipment is ensured. In addition, the short circuit detection module is simple and has self-recovery and self-protection functions. In practical application, the stability and reliability of the product are greatly improved, and the product cost and the later maintenance cost are reduced.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. The direct current charging pile output short circuit detection module is characterized by comprising a DC/DC isolation power supply module, an anti-reverse unit, a first normally-open node K3-1 and a second normally-open node K3-2 of a relay K3, wherein the positive electrode of the DC/DC isolation power supply module, the anti-reverse unit and the first normally-open node K3-1 are sequentially connected, the other end of the first normally-open node K3-1 is connected to the positive output end DC + of an off-board charging pile, the negative electrode of the DC/DC isolation power supply module and the second normally-open node K3-2 are connected, and the other end of the second normally-open node K3-2 is connected to the negative output end DC-of the off-board charging pile.
2. The module of claim 1, wherein the anti-reverse unit comprises a FUSE1 and a diode assembly connected in series.
3. The module of claim 2, wherein the diode assembly comprises a diode D1 and a diode D2 connected in series.
4. The vehicle-mounted charging pile comprising the circuit detection module as claimed in any one of claims 1 to 3, further comprising a voltage measurement module, a current measurement module, a bleeder module, an AC/DC isolated power supply module, a relay K1, a relay K2;
the two ends of the voltage measurement module are respectively and correspondingly connected with a positive output end DC + and a negative output end DC-of the non-vehicle charging pile, the positive output end DC +, the relay K1 and the current measurement module of the non-vehicle charging pile are sequentially connected, the other end of the current measurement module is connected with the positive electrode of the AC/DC isolation power supply module, and the negative output end DC-of the non-vehicle charging pile is connected with the negative electrode of the AC/DC isolation power supply module through the relay K2.
5. The vehicle-mounted charging pile according to claim 4, characterized by further comprising an insulation detection module, wherein the insulation detection module is connected in parallel with the bleeding module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110866908.0A CN113625040A (en) | 2021-07-29 | 2021-07-29 | Direct current fills electric pile output short circuit detection module and fills electric pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110866908.0A CN113625040A (en) | 2021-07-29 | 2021-07-29 | Direct current fills electric pile output short circuit detection module and fills electric pile |
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| Publication Number | Publication Date |
|---|---|
| CN113625040A true CN113625040A (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110866908.0A Pending CN113625040A (en) | 2021-07-29 | 2021-07-29 | Direct current fills electric pile output short circuit detection module and fills electric pile |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011144180A2 (en) * | 2011-06-08 | 2011-11-24 | 华为技术有限公司 | Control circuit for preventing battery group from being reversely connected and power supply system for base station |
| WO2017033411A1 (en) * | 2015-08-25 | 2017-03-02 | 三洋電機株式会社 | Power supply device, and electric vehicle provided with power supply device |
| CN108767952A (en) * | 2018-06-04 | 2018-11-06 | 南京能瑞电力科技有限公司 | A kind of off-board charging system to interconnect |
| CN208306388U (en) * | 2018-06-04 | 2019-01-01 | 南京能瑞电力科技有限公司 | A kind of reliable non-on-board charger of high safety |
| CN109193872A (en) * | 2018-11-09 | 2019-01-11 | 浙江国自机器人技术有限公司 | A kind of autonomous charging of robots equipment, robot and its recharging system |
| CN109406936A (en) * | 2018-12-18 | 2019-03-01 | 辽宁恒顺新能源科技有限公司 | Charging pile alarm and protection module |
-
2021
- 2021-07-29 CN CN202110866908.0A patent/CN113625040A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011144180A2 (en) * | 2011-06-08 | 2011-11-24 | 华为技术有限公司 | Control circuit for preventing battery group from being reversely connected and power supply system for base station |
| WO2017033411A1 (en) * | 2015-08-25 | 2017-03-02 | 三洋電機株式会社 | Power supply device, and electric vehicle provided with power supply device |
| CN108767952A (en) * | 2018-06-04 | 2018-11-06 | 南京能瑞电力科技有限公司 | A kind of off-board charging system to interconnect |
| CN208306388U (en) * | 2018-06-04 | 2019-01-01 | 南京能瑞电力科技有限公司 | A kind of reliable non-on-board charger of high safety |
| CN109193872A (en) * | 2018-11-09 | 2019-01-11 | 浙江国自机器人技术有限公司 | A kind of autonomous charging of robots equipment, robot and its recharging system |
| CN109406936A (en) * | 2018-12-18 | 2019-03-01 | 辽宁恒顺新能源科技有限公司 | Charging pile alarm and protection module |
Non-Patent Citations (2)
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| 于鹏: "非车载直流充电通信与安全体系研究", 《中国优秀硕士学位论文全文数据库》 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211109 |