CN110803042A - Charging bow control circuit and method - Google Patents
Charging bow control circuit and method Download PDFInfo
- Publication number
- CN110803042A CN110803042A CN201810791422.3A CN201810791422A CN110803042A CN 110803042 A CN110803042 A CN 110803042A CN 201810791422 A CN201810791422 A CN 201810791422A CN 110803042 A CN110803042 A CN 110803042A
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- China
- Prior art keywords
- charging
- pantograph
- relay
- bow
- power supply
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000012544 monitoring process Methods 0.000 claims abstract description 33
- 230000001174 ascending effect Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
- B60L5/18—Current collectors for power supply lines of electrically-propelled vehicles using bow-type collectors in contact with trolley wire
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
- B60L5/18—Current collectors for power supply lines of electrically-propelled vehicles using bow-type collectors in contact with trolley wire
- B60L5/20—Details of contact bow
-
- 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
-
- 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
-
- 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
- Y02T90/14—Plug-in electric vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to a charging bow control circuit and a charging bow control method, and belongs to the technical field of charging control of electric vehicles. The invention detects whether the power supply line of the charger is normal by arranging the monitoring relay on the power supply line of the charger, when the power failure occurs accidentally, the normally closed contact of the monitoring relay on the branch is kept closed, the relay is kept electrified, the normally open contact of the relay is kept closed, and the normally closed contact and the relay form a self-holding loop.
Description
Technical Field
The invention relates to a charging bow control circuit and a charging bow control method, and belongs to the technical field of charging control of electric vehicles.
Background
As the number of automobiles continues to increase, many problems, such as environmental pollution problems and petroleum energy problems, become more and more prominent. With the progress of science and technology and the enhancement of environmental awareness of people, electric vehicles are widely applied, and compared with motor vehicles, the electric vehicles can save energy and cannot cause environmental pollution. At present, under the background that the state is popularizing the pure electric vehicles, the technology of the high-power automatic charging bow is developed rapidly. For example, the patent application with publication number CN108189673A discloses a charging bow type electric vehicle charging system, which comprises a platform part and a vehicle-mounted part, wherein the platform part comprises a rectifier cabinet, a charging frame and an interface monitoring module, the charging frame is connected with a charging bow through a charging bow running mechanism, the vehicle-mounted part comprises a bus bar and a battery pack, when the vehicle needs to be charged, the interface monitoring module controls the charging bow running mechanism to enable the charging bow to be in butt joint with the bus bar for charging, and the system can realize high-power automatic charging of the electric vehicle and improve the convenience of the charging system. The charging bow can be retracted after the power supply system is powered off or the emergency stop button is pressed down, but the bow falls after the power supply system is powered on again, so that the bow falls in an artificial way, and if the bow is overhauled, the falling of the bow can cause dangerous factors such as pressure injury and electric shock of people, and the normal charging is influenced.
Disclosure of Invention
The invention aims to provide a charging bow control circuit, which aims to solve the problem of charging danger caused by bow drop of a charging bow after power is supplied again due to unexpected power failure; the invention also provides a charging bow control method, which aims to solve the problem that charging safety is affected by direct bow reduction of the charging bow after power is supplied again due to unexpected power failure.
The invention provides a control circuit of a charging bow, which aims to solve the technical problems and comprises a monitoring branch, a holding branch and an enabling branch, wherein the monitoring branch comprises a monitoring relay arranged on a power supply line of a charger, the holding branch comprises a normally closed contact of the monitoring relay and a holding relay which are connected in series at two ends of a power supply, two ends of the normally closed contact of the monitoring relay are connected with a normally open contact of the holding relay in parallel, the enabling branch is connected to a bow-lowering enabling end of a charging bow motor controller, and the enabling branch is provided with the normally closed contact of the holding relay.
The invention detects whether the power supply line of the charger is normal by arranging the monitoring relay on the power supply line of the charger, when the power failure occurs accidentally, the normally closed contact of the monitoring relay on the branch is kept closed, the relay is kept electrified, the normally open contact of the relay is kept closed, and the normally closed contact and the relay form a self-holding loop.
Furthermore, in order to prevent the pantograph descending operation caused by electrifying again after the charging pantograph ascends and is powered off due to the fact that the emergency stop button is triggered manually, two ends of the normally closed contact of the monitoring relay of the maintaining branch are connected with the emergency stop button switch in parallel, and therefore charging safety is further improved.
Furthermore, in order to realize normal pantograph lowering charging of the charging pantograph after the secondary electrification, a reset switch is further arranged between the normally open contact of the holding relay and one end of the power supply in series, the normally open contact of the holding relay is connected with the reset switch in series and then connected with the normally closed contact of the monitoring relay in parallel, and the reset switch is a normally closed switch.
Furthermore, the invention provides a specific power supply adopted, wherein the power supply is a UPS.
The invention also provides a control method of the charging bow, which comprises the following steps:
and in the pantograph descending charging process, detecting a charging power supply in real time, controlling the charging pantograph to carry out pantograph ascending operation after the charging power supply is abnormally powered off, judging whether the charging pantograph meets the set pantograph descending condition or not if the charging power supply is powered on again, and controlling the charging pantograph not to carry out pantograph descending operation if the charging pantograph does not meet the set pantograph descending condition.
Further, the control method further comprises the steps of controlling the charging bow to carry out bow rising operation after an emergency stop button is pressed in the bow falling charging process, judging whether the charging bow meets the set bow falling condition or not if the emergency stop button is recovered, and controlling the charging bow not to carry out the bow falling operation if the emergency stop button is not met.
Further, the set pantograph reducing condition is that a pantograph reducing request is received.
Drawings
FIG. 1 is a schematic diagram of a charge bow control circuit of the present invention;
fig. 2 is a flow chart of a charge bow control method of the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
Embodiments of a charging bow control circuit of the present invention
The charging bow control circuit comprises a monitoring branch, a holding branch and an enabling branch, wherein the monitoring branch comprises a monitoring relay arranged on a power supply line of a charger, the holding branch comprises a normally closed contact of the monitoring relay and a holding relay which are connected in series at two ends of a power supply, two ends of the normally closed contact of the monitoring relay are connected with a normally open contact of the holding relay in parallel, the enabling branch is connected to a bow-lowering enabling end of a charging bow motor controller, and the enabling branch is provided with the normally closed contact of the holding relay. When the power is cut off accidentally, the normally closed contact of the monitoring relay on the branch is kept closed, the power of the maintaining relay is obtained, the normally open contact of the maintaining relay is closed, a self-holding loop is formed between the normally closed contact of the maintaining relay and the maintaining relay, after the power is switched on again, although the power of the monitoring relay is obtained, the normally closed contact corresponding to the monitoring relay is disconnected, due to the existence of the self-holding loop, the normally closed contact of the maintaining relay on the branch is still in the power-on state, the normally closed contact of the maintaining relay on the branch is disconnected, the pantograph lowering control signal cannot be sent out by the charging pantograph motor controller, the pantograph lowering operation.
Specifically, as shown in fig. 1, the monitoring branch includes a monitoring relay K1 arranged between the phase a supplied by the charger and the ground, and is used for monitoring whether the charged power supply is normal, when the power supply is normal, the coil K1 is powered on, and when the power supply is cut off, the coil K1 is powered off; the maintaining branch comprises a maintaining relay K2 and a normally closed contact of a monitoring relay which are serially connected at two ends of the UPS, and a normally open auxiliary contact K3 of an emergency stop switch which is arranged at two ends of the normally closed contact of the monitoring relay, the normally open contact of the maintaining relay and a reset switch S which are serially connected are also parallelly connected at two ends of the normally closed contact of the monitoring relay, and a self-maintaining loop is formed by the K2 and the corresponding normally open contact; the enabling branch is arranged at a pantograph lowering enabling end of a servo motor controller (a charging pantograph motor controller), and a 12V power supply is connected to the pantograph lowering enabling end controlled by the servo motor through a normally closed contact of a holding relay. After the emergency stop switch is pressed down, the alternating-current contactor of the charger is disconnected, the power supply system of the whole charger is powered off, the emergency stop switch is recovered when the charger is powered on again, and the bow lowering process is started if the bow lowering request of the vehicle end received by the charger does not disappear.
When the power supply system of the charger loses power, the working process of the circuit is as follows: when LA is powered off, a coil K1 is powered off, a normally closed contact of the coil K1 is closed, a coil K2 is electrified, a normally open node K2 is closed to form a self-holding loop, a normally closed node K2 is disconnected, and a servo motor controller loses a bow reduction enabling signal and does not reduce a bow; when the LA recovers power supply, the normally closed node of K2 is still disconnected due to the existence of the self-holding loop, and the servo motor controller loses the pantograph descending enabling signal and does not descend the pantograph.
When the emergency stop button is pressed (the normally open auxiliary contact of the emergency stop switch is closed), the working process of the circuit is as follows: k3 is closed, a K2 coil is electrified, a K2 normally-open node is closed to form a self-holding loop, a K2 normally-closed node is disconnected, and the servo motor controller loses a pantograph descending enabling signal and does not descend a pantograph.
The working process of the reset circuit is as follows: and S is a normally closed manual switch, and after the S is pressed down, the K2 coil loses power, is reset in a self-holding state, and is restored to a pantograph lowering enabling state.
According to the invention, the pantograph lowering enabling signal of the servo motor controller is added so as to prevent the accidental pantograph lowering caused by sudden power on after power failure, the power supply power failure or emergency stop signal is used for triggering and keeping the pantograph lowering enabling signal to be sent to the charging pantograph servo motor controller through the relay lapping loop, the pantograph lowering operation after the power on is performed again or the emergency stop button is recovered is prevented, and the charging safety is improved.
Embodiments of a charging bow control method of the invention
As shown in fig. 2, the control method of the charging bow of the present invention comprises: and in the pantograph descending charging process, detecting a charging power supply in real time, controlling the charging pantograph to carry out pantograph ascending operation after the charging power supply is abnormally powered off, judging whether the charging pantograph meets the set pantograph descending condition or not if the charging power supply is powered on again, and controlling the charging pantograph not to carry out pantograph descending operation if the charging pantograph does not meet the set pantograph descending condition. And after the emergency stop button is pressed, controlling the charging bow to perform bow lifting operation, judging whether the charging bow meets set bow lowering conditions or not if the emergency stop button is recovered, and controlling the charging bow not to perform bow lowering operation if the charging bow does not meet the set bow lowering conditions, wherein the set bow lowering conditions refer to the fact that a vehicle end bow lowering request is received.
Claims (7)
1. The charging bow control circuit is characterized by comprising a monitoring branch, a maintaining branch and an enabling branch, wherein the monitoring branch comprises a monitoring relay arranged on a power supply line of a charger, the maintaining branch comprises a normally closed contact of the monitoring relay and a maintaining relay which are connected in series at two ends of a power supply, two ends of the normally closed contact of the monitoring relay are connected with a normally open contact of the maintaining relay in parallel, the enabling branch is connected to a bow-lowering enabling end of a charging bow motor controller, and the enabling branch is provided with the normally closed contact of the maintaining relay.
2. The charge bow control circuit of claim 1, wherein the holding branch circuit is further connected in parallel across the normally closed contacts of the monitor relay with an emergency stop button switch.
3. The charging bow control circuit according to claim 1 or 2, wherein a reset switch is further connected in series between the normally open contact of the holding relay and one end of the power supply, the normally open contact of the holding relay is connected in series with the reset switch and then connected in parallel with the normally closed contact of the monitoring relay, and the reset switch is a normally closed switch.
4. The charge bow control circuit of claim 3, wherein the power source is a UPS uninterruptible power supply.
5. A charging bow control method is characterized by comprising the following steps:
and in the pantograph descending charging process, detecting a charging power supply in real time, controlling the charging pantograph to carry out pantograph ascending operation after the charging power supply is abnormally powered off, judging whether the charging pantograph meets the set pantograph descending condition or not if the charging power supply is powered on again, and controlling the charging pantograph not to carry out pantograph descending operation if the charging pantograph does not meet the set pantograph descending condition.
6. The control method of claim 5, further comprising controlling the pantograph to perform pantograph-raising operation after the emergency stop button is pressed during pantograph-lowering charging, determining whether the pantograph satisfies the set pantograph-lowering condition if the emergency stop button is restored, and controlling the pantograph not to perform pantograph-lowering operation if the emergency stop button is not satisfied.
7. The charge bow control method according to claim 5 or 6, wherein the set bow reduction condition is a reception of a bow reduction request.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810791422.3A CN110803042B (en) | 2018-07-18 | 2018-07-18 | Charging bow control circuit and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810791422.3A CN110803042B (en) | 2018-07-18 | 2018-07-18 | Charging bow control circuit and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110803042A true CN110803042A (en) | 2020-02-18 |
| CN110803042B CN110803042B (en) | 2023-12-15 |
Family
ID=69486573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810791422.3A Active CN110803042B (en) | 2018-07-18 | 2018-07-18 | Charging bow control circuit and method |
Country Status (1)
| Country | Link |
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| CN (1) | CN110803042B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114069588A (en) * | 2021-11-08 | 2022-02-18 | 中车长春轨道客车股份有限公司 | Track traffic vehicle emergency pantograph-ascending pump external power supply control circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203078331U (en) * | 2012-12-25 | 2013-07-24 | 中铁三局集团有限公司 | Automatic pantograph-lowering control circuit for electric locomotive |
| WO2016082648A1 (en) * | 2014-11-28 | 2016-06-02 | 中车青岛四方机车车辆股份有限公司 | Novel 25kv pantograph control circuit |
| CN106553552A (en) * | 2016-11-24 | 2017-04-05 | 株洲中车时代电气股份有限公司 | City rail vehicle pantograph and pantagraph current collector switching control system and trailer system |
| CN106915259A (en) * | 2017-02-22 | 2017-07-04 | 株洲中车时代电气股份有限公司 | A kind of various current collection mode power supply high voltage switching circuits of subway train and changing method |
| CN108189673A (en) * | 2018-03-09 | 2018-06-22 | 凯迈(洛阳)电子有限公司 | One kind fills pantograph type charging system for electric automobile |
| CN208881607U (en) * | 2018-07-18 | 2019-05-21 | 郑州宇通客车股份有限公司 | A kind of charging bow control circuit |
-
2018
- 2018-07-18 CN CN201810791422.3A patent/CN110803042B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203078331U (en) * | 2012-12-25 | 2013-07-24 | 中铁三局集团有限公司 | Automatic pantograph-lowering control circuit for electric locomotive |
| WO2016082648A1 (en) * | 2014-11-28 | 2016-06-02 | 中车青岛四方机车车辆股份有限公司 | Novel 25kv pantograph control circuit |
| CN106553552A (en) * | 2016-11-24 | 2017-04-05 | 株洲中车时代电气股份有限公司 | City rail vehicle pantograph and pantagraph current collector switching control system and trailer system |
| CN106915259A (en) * | 2017-02-22 | 2017-07-04 | 株洲中车时代电气股份有限公司 | A kind of various current collection mode power supply high voltage switching circuits of subway train and changing method |
| CN108189673A (en) * | 2018-03-09 | 2018-06-22 | 凯迈(洛阳)电子有限公司 | One kind fills pantograph type charging system for electric automobile |
| CN208881607U (en) * | 2018-07-18 | 2019-05-21 | 郑州宇通客车股份有限公司 | A kind of charging bow control circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114069588A (en) * | 2021-11-08 | 2022-02-18 | 中车长春轨道客车股份有限公司 | Track traffic vehicle emergency pantograph-ascending pump external power supply control circuit |
| CN114069588B (en) * | 2021-11-08 | 2024-03-08 | 中车长春轨道客车股份有限公司 | External power supply control circuit of emergency lift bow pump of rail transit vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110803042B (en) | 2023-12-15 |
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Address after: No. 6, Yutong Road, Guancheng Hui District, Zhengzhou, Henan 450061 Applicant after: Yutong Bus Co.,Ltd. Address before: 450061 Yudao Road, Guancheng District, Zhengzhou City, Henan Province Applicant before: ZHENGZHOU YUTONG BUS Co.,Ltd. |
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