CN215267766U - Dual-redundancy power supply circuit - Google Patents
Dual-redundancy power supply circuit Download PDFInfo
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- CN215267766U CN215267766U CN202121530196.7U CN202121530196U CN215267766U CN 215267766 U CN215267766 U CN 215267766U CN 202121530196 U CN202121530196 U CN 202121530196U CN 215267766 U CN215267766 U CN 215267766U
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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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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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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Abstract
The utility model relates to the technical field of power supply, and discloses a dual-redundancy power supply circuit, which comprises a switching unit and a switch unit; the switch unit comprises a third switch and a second driving unit; the switching unit comprises a first switch, a second switch and a driving unit; the input end of the first switch and the driving unit respectively input one path of single-phase voltage, and the input end of the second switch inputs the other path of single-phase voltage; the driving unit is used for driving the first switch to be connected or disconnected and driving the second switch to be connected or disconnected; the output end of the first switch is respectively electrically connected with the input ends of the second drive unit and the third switch, the second drive unit drives the third switch to be switched on when the single-phase voltage input by the input end of the first switch is normal, and the second drive unit drives the third switch to be switched off when the single-phase voltage input by the input end of the first switch is abnormal; when in actual use, through the utility model discloses can realize the redundant switching of two way three-phase electricity, ensure to fill the power supply stability of consumer such as electric pile.
Description
Technical Field
The utility model relates to a power technical field, concretely relates to dual redundant power supply circuit.
Background
In an electric power supply system, all electric equipment acquires power supply voltage from a power grid, and the power supply voltage facing users of the power grid in China at present is 380V three-phase power or 220V alternating current.
In order to ensure the normal operation of the electric equipment, most electric equipment is provided with a redundant power supply, so that when the voltage on the power grid is abnormal and the electric equipment cannot normally supply power, the redundant power supply can normally supply power to the electric equipment, for example, the redundant power supply is often configured in the power supply network of a server so that the server can always work. However, this configuration of redundant power not only increases the configuration cost, but also is not suitable for charging type devices, such as a charging pile of a new energy vehicle, and an internal power supply of the charging pile usually only depends on one phase of three-phase electricity to work when working, that is, the voltage of one phase of three-phase electricity is converted into a charging voltage and converted into a power supply voltage of an electronic device in the charging pile.
Therefore, the existing charging pile has poor power supply stability, and a redundant power supply circuit which can connect another phase current to the charging pile when the abnormality occurs in a certain phase current is lacked
SUMMERY OF THE UTILITY MODEL
In view of the not enough of background art, the utility model provides a dual-redundancy power supply circuit can insert another looks electricity in the three-phase electricity into when a certain looks electricity that inserts electric pile appears unusually, ensures that it is stable to fill electric pile power supply.
For solving the technical problem, the utility model provides a following technical scheme: a dual-redundancy power supply circuit comprises a switching unit, a switch unit, an A phase voltage input end, a B phase voltage input end and a power supply output end; the switching unit includes a third switch and a second driving unit;
the switching unit comprises a first switch, a second switch and a driving unit; the input end of the first switch and the driving unit are respectively electrically connected with the phase voltage input end of the A phase, and the input end of the second switch is electrically connected with the phase voltage input end of the B phase; the driving unit drives the first switch to be switched on and the second switch to be switched off when the single-phase voltage input by the A-phase voltage input end is normal, and drives the first switch to be switched off and the second switch to be switched on when the single-phase voltage input by the A-phase voltage input end is abnormal;
the output end of the first switch is electrically connected with the input ends of the second drive unit and the third switch respectively, the second drive unit drives the third switch to be turned on when the single-phase voltage input by the A-phase voltage input end is normal, and the second drive unit drives the third switch to be turned off when the single-phase voltage input by the A-phase voltage input end is abnormal; and the output end of the second switch and the output end of the third switch are respectively and electrically connected with the power supply output end.
In one embodiment, the switch unit is a relay RL1, the third switch is a pair of normally open contacts of a relay RL1, the second driving unit is a control coil of the relay RL1, one end of the control coil of the relay RL1 is electrically connected with the output end of the first switch, and the other end of the control coil of the relay RL1 is electrically connected with a zero line.
In one embodiment, the switching unit is a relay RL2, the first switch is a pair of normally open contacts of a relay RL2, the second switch is a pair of normally closed contacts of a relay RL2, the driving unit is a control coil of a relay RL2, one end of the control coil of the relay RL2 is electrically connected with the a-phase voltage input end, and the other end of the control coil of the relay RL2 is electrically connected with a zero line.
In one embodiment, the drive unit comprises a first drive unit and a third drive unit; the first driving unit and the third driving unit are respectively electrically connected with the phase A voltage input end; the first driving unit drives the first switch to be switched on when the single-phase voltage input by the A-phase voltage input end is normal, and drives the first switch to be switched off when the single-phase voltage input by the A-phase voltage input end is abnormal; the third driving unit drives the second switch to be turned off when the single-phase voltage input by the A-phase voltage input end is normal, and drives the second switch to be turned off when the single-phase voltage input by the A-phase voltage input end is abnormal.
In certain embodiments, the switching units are a relay RL2 and a relay RL3, the first switch is a pair of normally open contacts of a relay RL2, the first drive unit is a control coil of a relay RL2, the second switch is a pair of normally closed contacts of a relay RL3, and the third drive unit is a control coil of a relay RL 3.
Compared with the prior art, the utility model beneficial effect who has is: through the utility model discloses, can regard two way single-phase electricity in the three-phase electricity as the power supply who fills electric pile, one of them way single-phase electricity is power supply commonly used, and another way single-phase electricity is reserve power supply, appears lacking when the same anomaly when the single-phase electricity that is used as power supply, the utility model discloses to be used as reserve power supply's single-phase electricity input to filling electric pile and carry out work, ensure to fill electric pile's power supply stable, can fill electric pile through first switch and third switch automatic input after the single-phase electricity that is used as power supply commonly used resumes normally in addition, can break off the second switch simultaneously, use reserve power supply's single-phase electricity and fill between the electric pile for off-state, realized filling electric pile at the power supply end's power redundancy.
Drawings
Fig. 1 is a schematic circuit diagram of the present invention;
fig. 2 is another schematic circuit diagram of the present invention.
In the figure: IN 1: a-phase voltage input terminal, IN 2: b-phase voltage input terminal, O1: and a power supply output terminal.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
Example one
IN order to ensure the stable power supply of the charging pile, the utility model provides a dual-redundancy power supply circuit, which comprises a switching unit, a switch unit, an A-phase voltage input end IN1, a B-phase voltage input end IN2 and a power output end O1; the switch unit comprises a third switch and a second driving unit;
the switching unit comprises a first switch, a second switch and a driving unit; the input end of the first switch and the driving unit are respectively electrically connected with an A-phase voltage input end IN1, and the input end of the second switch is electrically connected with a B-phase voltage input end IN 2; the driving unit drives the first switch to be switched on and the second switch to be switched off when the single-phase voltage input by the A-phase voltage input end IN1 is normal, and drives the first switch to be switched off and the second switch to be switched on when the single-phase voltage input by the A-phase voltage input end IN1 is abnormal; the single-phase voltage abnormity is that the single-phase electricity has a phase loss in the three-phase electricity;
the output end of the first switch is electrically connected with the input ends of the second drive unit and the third switch respectively, the second drive unit drives the third switch to be turned on when the single-phase voltage input by the A-phase voltage input end IN1 is normal, and the second drive unit drives the third switch to be turned off when the single-phase voltage input by the A-phase voltage input end IN1 is abnormal; the output end of the second switch and the output end of the third switch are respectively and electrically connected with the power output end.
Example two
Referring to fig. 1, on the basis of the first embodiment, in the present embodiment, the switch unit is a relay RL1, the third switch is a pair of normally open contacts of a relay RL1, the second driving unit is a control coil of a relay RL1, one end of the control coil of the relay RL1 is electrically connected with an output end of the first switch, and the other end of the control coil of the relay RL1 is electrically connected with a neutral line N.
The switching unit is a relay RL2, the first switch is a pair of normally open contacts of a relay RL2, the second switch is a pair of normally closed contacts of a relay RL2, the driving unit is a control coil of the relay RL2, one end of the control coil of the relay RL2 is electrically connected with an A-phase voltage input end IN1, and the other end of the control coil of the relay RL2 is electrically connected with a zero line N.
The principle of the structure of the circuit in fig. 1 is as follows: when the single-phase voltage input by the A-phase voltage input end IN1 is normal, the control coil of the relay RL2 is electrified, the normally open contact and the normally closed contact of the relay RL2 are closed, the control coil of the relay RL1 is electrified, the normally open contact of the relay RL1 is closed, and the single-phase voltage input into the A-phase voltage input end IN1 supplies power to the charging pile or other electric equipment through the normally open contact of the relay RL2, the normally open contact of the relay RL1 and the power output end; when the single-phase voltage input by the A-phase voltage input end IN1 has abnormal conditions such as phase loss and the like, the control coils of the relay RL2 and the relay RL1 are powered off, the normally open contact of the relay RL2 is opened, the normally closed contact of the relay RL2 is closed, the normally open contact of the relay RL1 is closed, and the single-phase voltage input by the B-phase voltage input end supplies power to the charging pile or other electric equipment through the normally closed contact of the relay RL2 and the power output end O1, so that power redundancy is realized.
When the single-phase power input by the A-phase voltage input end is recovered to be normal, the control coils of the relay RL2 and the relay RL1 are electrified, the connection between the B-phase voltage input end IN2 and the power output end O1 is disconnected, and the single-phase power input by the A-phase voltage input end IN1 is supplied to the charging pile or other electric equipment through the normally open contact of the relay RL2, the normally open contact of the relay RL1 and the power output end O1.
EXAMPLE III
In addition to the first embodiment, in this embodiment, the driving unit includes a first driving unit and a third driving unit; the first drive unit and the third drive unit are respectively electrically connected with an A phase voltage input end IN 1; the first driving unit drives the first switch to be switched on when the single-phase voltage input by the A-phase voltage input end IN1 is normal, and drives the first switch to be switched off when the single-phase voltage input by the A-phase voltage input end IN1 is abnormal; the third driving unit drives the second switch to be turned off when the single-phase voltage input from the a-phase voltage input terminal IN1 is normal, and drives the second switch to be turned off when the single-phase voltage input from the a-phase voltage input terminal IN1 is abnormal.
Specifically, referring to fig. 2, in the present embodiment, the switching units are a relay RL2 and a relay RL3, the first switch is a pair of normally open contacts of the relay RL2, the first driving unit is a control coil of the relay RL2, the second switch is a pair of normally closed contacts of the relay RL3, and the third driving unit is a control coil of the relay RL 3.
The control coils of the ground relay RL2 and the relay RL3 in fig. 2 are simultaneously powered on and simultaneously powered off, and the working principle of the circuit in fig. 2 can refer to the working principle part of the circuit structure in fig. 1 in the second embodiment.
In light of the above, the present invention is not limited to the above embodiments, and various changes and modifications can be made by the worker without departing from the scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (5)
1. A dual redundant power supply circuit, characterized by: the device comprises a switching unit, a switch unit, an A phase voltage input end, a B phase voltage input end and a power output end; the switching unit includes a third switch and a second driving unit; the switching unit comprises a first switch, a second switch and a driving unit;
the input end of the first switch and the driving unit are respectively electrically connected with the phase voltage input end of the A phase, and the input end of the second switch is electrically connected with the phase voltage input end of the B phase; the driving unit drives the first switch to be switched on and the second switch to be switched off when the single-phase voltage input by the A-phase voltage input end is normal, and drives the first switch to be switched off and the second switch to be switched on when the single-phase voltage input by the A-phase voltage input end is abnormal;
the output end of the first switch is electrically connected with the input ends of the second drive unit and the third switch respectively, the second drive unit drives the third switch to be turned on when the single-phase voltage input by the A-phase voltage input end is normal, and the second drive unit drives the third switch to be turned off when the single-phase voltage input by the A-phase voltage input end is abnormal; and the output end of the second switch and the output end of the third switch are respectively and electrically connected with the power supply output end.
2. A dual redundant power supply circuit according to claim 1, wherein: the switch unit is a relay RL1, the third switch is a pair of normally open contacts of a relay RL1, the second driving unit is a control coil of the relay RL1, one end of the control coil of the relay RL1 is electrically connected with the output end of the first switch, and the other end of the control coil of the relay RL1 is electrically connected with a zero line.
3. A dual redundant power supply circuit according to claim 1 or 2, wherein: the switching unit is a relay RL2, the first switch is a pair of normally open contacts of a relay RL2, the second switch is a pair of normally closed contacts of a relay RL2, the driving unit is a control coil of a relay RL2, one end of the control coil of the relay RL2 is electrically connected with the phase voltage input end of the A phase, and the other end of the control coil of the relay RL2 is electrically connected with a zero line.
4. A dual redundant power supply circuit according to claim 1, wherein: the driving unit comprises a first driving unit and a third driving unit; the first driving unit and the third driving unit are respectively electrically connected with the phase A voltage input end; the first driving unit drives the first switch to be switched on when the single-phase voltage input by the A-phase voltage input end is normal, and drives the first switch to be switched off when the single-phase voltage input by the A-phase voltage input end is abnormal; the third driving unit drives the second switch to be turned off when the single-phase voltage input by the A-phase voltage input end is normal, and drives the second switch to be turned off when the single-phase voltage input by the A-phase voltage input end is abnormal.
5. The dual redundant power supply circuit of claim 4, wherein: the switching units are a relay RL2 and a relay RL3, the first switch is a pair of normally open contacts of a relay RL2, the first driving unit is a control coil of a relay RL2, the second switch is a pair of normally closed contacts of a relay RL3, and the third driving unit is a control coil of a relay RL 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121530196.7U CN215267766U (en) | 2021-07-06 | 2021-07-06 | Dual-redundancy power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121530196.7U CN215267766U (en) | 2021-07-06 | 2021-07-06 | Dual-redundancy power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215267766U true CN215267766U (en) | 2021-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121530196.7U Active CN215267766U (en) | 2021-07-06 | 2021-07-06 | Dual-redundancy power supply circuit |
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| Country | Link |
|---|---|
| CN (1) | CN215267766U (en) |
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2021
- 2021-07-06 CN CN202121530196.7U patent/CN215267766U/en active Active
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